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this')();\n", "'use strict';\nmodule.exports = function (exec) {\n try {\n return !!exec();\n } catch (error) {\n return true;\n }\n};\n", "'use strict';\nvar fails = require('../internals/fails');\n\n// Detect IE8's incomplete defineProperty implementation\nmodule.exports = !fails(function () {\n // eslint-disable-next-line es/no-object-defineproperty -- required for testing\n return Object.defineProperty({}, 1, { get: function () { return 7; } })[1] !== 7;\n});\n", "'use strict';\nvar fails = require('../internals/fails');\n\nmodule.exports = !fails(function () {\n // eslint-disable-next-line es/no-function-prototype-bind -- safe\n var test = function () { /* empty */ }.bind();\n // eslint-disable-next-line no-prototype-builtins -- safe\n return typeof test != 'function' || test.hasOwnProperty('prototype');\n});\n", "'use strict';\nvar NATIVE_BIND = require('../internals/function-bind-native');\n\nvar call = Function.prototype.call;\n// eslint-disable-next-line es/no-function-prototype-bind -- safe\nmodule.exports = NATIVE_BIND ? call.bind(call) : function () {\n return call.apply(call, arguments);\n};\n", "'use strict';\nvar $propertyIsEnumerable = {}.propertyIsEnumerable;\n// eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe\nvar getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;\n\n// Nashorn ~ JDK8 bug\nvar NASHORN_BUG = getOwnPropertyDescriptor && !$propertyIsEnumerable.call({ 1: 2 }, 1);\n\n// `Object.prototype.propertyIsEnumerable` method implementation\n// https://tc39.es/ecma262/#sec-object.prototype.propertyisenumerable\nexports.f = NASHORN_BUG ? function propertyIsEnumerable(V) {\n var descriptor = getOwnPropertyDescriptor(this, V);\n return !!descriptor && descriptor.enumerable;\n} : $propertyIsEnumerable;\n", "'use strict';\nmodule.exports = function (bitmap, value) {\n return {\n enumerable: !(bitmap & 1),\n configurable: !(bitmap & 2),\n writable: !(bitmap & 4),\n value: value\n };\n};\n", "'use strict';\nvar NATIVE_BIND = require('../internals/function-bind-native');\n\nvar FunctionPrototype = Function.prototype;\nvar call = FunctionPrototype.call;\n// eslint-disable-next-line es/no-function-prototype-bind -- safe\nvar uncurryThisWithBind = NATIVE_BIND && FunctionPrototype.bind.bind(call, call);\n\nmodule.exports = NATIVE_BIND ? uncurryThisWithBind : function (fn) {\n return function () {\n return call.apply(fn, arguments);\n };\n};\n", "'use strict';\nvar uncurryThis = require('../internals/function-uncurry-this');\n\nvar toString = uncurryThis({}.toString);\nvar stringSlice = uncurryThis(''.slice);\n\nmodule.exports = function (it) {\n return stringSlice(toString(it), 8, -1);\n};\n", "'use strict';\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar fails = require('../internals/fails');\nvar classof = require('../internals/classof-raw');\n\nvar $Object = Object;\nvar split = uncurryThis(''.split);\n\n// fallback for non-array-like ES3 and non-enumerable 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undefined : aCallable(func);\n};\n", "'use strict';\nvar call = require('../internals/function-call');\nvar isCallable = require('../internals/is-callable');\nvar isObject = require('../internals/is-object');\n\nvar $TypeError = TypeError;\n\n// `OrdinaryToPrimitive` abstract operation\n// https://tc39.es/ecma262/#sec-ordinarytoprimitive\nmodule.exports = function (input, pref) {\n var fn, val;\n if (pref === 'string' && isCallable(fn = input.toString) && !isObject(val = call(fn, input))) return val;\n if (isCallable(fn = input.valueOf) && !isObject(val = call(fn, input))) return val;\n if (pref !== 'string' && isCallable(fn = input.toString) && !isObject(val = call(fn, input))) return val;\n throw new $TypeError(\"Can't convert object to primitive value\");\n};\n", "'use strict';\nmodule.exports = false;\n", "'use strict';\nvar globalThis = require('../internals/global-this');\n\n// eslint-disable-next-line es/no-object-defineproperty -- safe\nvar defineProperty = Object.defineProperty;\n\nmodule.exports = function (key, value) {\n try {\n defineProperty(globalThis, key, { value: value, configurable: true, writable: true });\n } catch (error) {\n globalThis[key] = value;\n } return value;\n};\n", "'use strict';\nvar IS_PURE = require('../internals/is-pure');\nvar globalThis = require('../internals/global-this');\nvar defineGlobalProperty = require('../internals/define-global-property');\n\nvar SHARED = '__core-js_shared__';\nvar store = module.exports = globalThis[SHARED] || defineGlobalProperty(SHARED, {});\n\n(store.versions || (store.versions = [])).push({\n version: '3.49.0',\n mode: IS_PURE ? 'pure' : 'global',\n copyright: '\u00A9 2013\u20132025 Denis Pushkarev (zloirock.ru), 2025\u20132026 CoreJS Company (core-js.io). All rights reserved.',\n license: 'https://github.com/zloirock/core-js/blob/v3.49.0/LICENSE',\n source: 'https://github.com/zloirock/core-js'\n});\n", "'use strict';\nvar store = require('../internals/shared-store');\n\nmodule.exports = function (key, value) {\n return store[key] || (store[key] = value || {});\n};\n", "'use strict';\nvar requireObjectCoercible = require('../internals/require-object-coercible');\n\nvar $Object = Object;\n\n// `ToObject` abstract operation\n// https://tc39.es/ecma262/#sec-toobject\nmodule.exports = function (argument) {\n return $Object(requireObjectCoercible(argument));\n};\n", "'use strict';\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar toObject = require('../internals/to-object');\n\nvar hasOwnProperty = uncurryThis({}.hasOwnProperty);\n\n// `HasOwnProperty` abstract operation\n// https://tc39.es/ecma262/#sec-hasownproperty\n// eslint-disable-next-line es/no-object-hasown -- safe\nmodule.exports = Object.hasOwn || function hasOwn(it, key) {\n return hasOwnProperty(toObject(it), key);\n};\n", "'use strict';\nvar uncurryThis = require('../internals/function-uncurry-this');\n\nvar id = 0;\nvar postfix = Math.random();\nvar toString = uncurryThis(1.1.toString);\n\nmodule.exports = function (key) {\n return 'Symbol(' + (key === undefined ? '' : key) + ')_' + toString(++id + postfix, 36);\n};\n", "'use strict';\nvar globalThis = require('../internals/global-this');\nvar shared = require('../internals/shared');\nvar hasOwn = require('../internals/has-own-property');\nvar uid = require('../internals/uid');\nvar NATIVE_SYMBOL = require('../internals/symbol-constructor-detection');\nvar USE_SYMBOL_AS_UID = require('../internals/use-symbol-as-uid');\n\nvar Symbol = globalThis.Symbol;\nvar WellKnownSymbolsStore = shared('wks');\nvar createWellKnownSymbol = USE_SYMBOL_AS_UID ? Symbol['for'] || Symbol : Symbol && Symbol.withoutSetter || uid;\n\nmodule.exports = function (name) {\n if (!hasOwn(WellKnownSymbolsStore, name)) {\n WellKnownSymbolsStore[name] = NATIVE_SYMBOL && hasOwn(Symbol, name)\n ? Symbol[name]\n : createWellKnownSymbol('Symbol.' + name);\n } return WellKnownSymbolsStore[name];\n};\n", "'use strict';\nvar call = require('../internals/function-call');\nvar isObject = require('../internals/is-object');\nvar isSymbol = require('../internals/is-symbol');\nvar getMethod = require('../internals/get-method');\nvar ordinaryToPrimitive = require('../internals/ordinary-to-primitive');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\n\nvar $TypeError = TypeError;\nvar TO_PRIMITIVE = wellKnownSymbol('toPrimitive');\n\n// `ToPrimitive` abstract operation\n// https://tc39.es/ecma262/#sec-toprimitive\nmodule.exports = function (input, pref) {\n if (!isObject(input) || isSymbol(input)) return input;\n var exoticToPrim = getMethod(input, TO_PRIMITIVE);\n var result;\n if (exoticToPrim) {\n if (pref === undefined) pref = 'default';\n result = call(exoticToPrim, input, pref);\n if (!isObject(result) || isSymbol(result)) return result;\n throw new $TypeError(\"Can't convert object to primitive value\");\n }\n if (pref === undefined) pref = 'number';\n return ordinaryToPrimitive(input, pref);\n};\n", "'use strict';\nvar toPrimitive = require('../internals/to-primitive');\nvar isSymbol = require('../internals/is-symbol');\n\n// `ToPropertyKey` abstract operation\n// https://tc39.es/ecma262/#sec-topropertykey\nmodule.exports = function (argument) {\n var key = toPrimitive(argument, 'string');\n return isSymbol(key) ? key : key + '';\n};\n", "'use strict';\nvar globalThis = require('../internals/global-this');\nvar isObject = require('../internals/is-object');\n\nvar document = globalThis.document;\n// typeof document.createElement is 'object' in old IE\nvar EXISTS = isObject(document) && isObject(document.createElement);\n\nmodule.exports = function (it) {\n return EXISTS ? document.createElement(it) : {};\n};\n", "'use strict';\nvar DESCRIPTORS = require('../internals/descriptors');\nvar fails = require('../internals/fails');\nvar createElement = require('../internals/document-create-element');\n\n// Thanks to IE8 for its funny defineProperty\nmodule.exports = !DESCRIPTORS && !fails(function () {\n // eslint-disable-next-line es/no-object-defineproperty -- required for testing\n return Object.defineProperty(createElement('div'), 'a', {\n get: function () { return 7; }\n }).a !== 7;\n});\n", "'use strict';\nvar DESCRIPTORS = require('../internals/descriptors');\nvar call = require('../internals/function-call');\nvar propertyIsEnumerableModule = require('../internals/object-property-is-enumerable');\nvar createPropertyDescriptor = require('../internals/create-property-descriptor');\nvar toIndexedObject = require('../internals/to-indexed-object');\nvar toPropertyKey = require('../internals/to-property-key');\nvar hasOwn = require('../internals/has-own-property');\nvar IE8_DOM_DEFINE = require('../internals/ie8-dom-define');\n\n// eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe\nvar $getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;\n\n// `Object.getOwnPropertyDescriptor` method\n// https://tc39.es/ecma262/#sec-object.getownpropertydescriptor\nexports.f = DESCRIPTORS ? $getOwnPropertyDescriptor : function getOwnPropertyDescriptor(O, P) {\n O = toIndexedObject(O);\n P = toPropertyKey(P);\n if (IE8_DOM_DEFINE) try {\n return $getOwnPropertyDescriptor(O, P);\n } catch (error) { /* empty */ }\n if (hasOwn(O, P)) return createPropertyDescriptor(!call(propertyIsEnumerableModule.f, O, P), O[P]);\n};\n", "'use strict';\nvar DESCRIPTORS = require('../internals/descriptors');\nvar fails = require('../internals/fails');\n\n// V8 ~ Chrome 36-\n// https://bugs.chromium.org/p/v8/issues/detail?id=3334\nmodule.exports = DESCRIPTORS && fails(function () {\n // eslint-disable-next-line es/no-object-defineproperty -- required for testing\n return Object.defineProperty(function () { /* empty */ }, 'prototype', {\n value: 42,\n writable: false\n }).prototype !== 42;\n});\n", "'use strict';\nvar isObject = require('../internals/is-object');\n\nvar $String = String;\nvar $TypeError = TypeError;\n\n// `Assert: Type(argument) is Object`\nmodule.exports = function (argument) {\n if (isObject(argument)) return argument;\n throw new $TypeError($String(argument) + ' is not an object');\n};\n", "'use strict';\nvar DESCRIPTORS = require('../internals/descriptors');\nvar IE8_DOM_DEFINE = require('../internals/ie8-dom-define');\nvar V8_PROTOTYPE_DEFINE_BUG = require('../internals/v8-prototype-define-bug');\nvar anObject = require('../internals/an-object');\nvar toPropertyKey = require('../internals/to-property-key');\n\nvar $TypeError = TypeError;\n// eslint-disable-next-line es/no-object-defineproperty -- safe\nvar $defineProperty = Object.defineProperty;\n// eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe\nvar $getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;\nvar ENUMERABLE = 'enumerable';\nvar CONFIGURABLE = 'configurable';\nvar WRITABLE = 'writable';\n\n// `Object.defineProperty` method\n// https://tc39.es/ecma262/#sec-object.defineproperty\nexports.f = DESCRIPTORS ? V8_PROTOTYPE_DEFINE_BUG ? function defineProperty(O, P, Attributes) {\n anObject(O);\n P = toPropertyKey(P);\n anObject(Attributes);\n if (typeof O === 'function' && P === 'prototype' && 'value' in Attributes && WRITABLE in Attributes && !Attributes[WRITABLE]) {\n var current = $getOwnPropertyDescriptor(O, P);\n if (current && current[WRITABLE]) {\n O[P] = Attributes.value;\n Attributes = {\n configurable: CONFIGURABLE in Attributes ? Attributes[CONFIGURABLE] : current[CONFIGURABLE],\n enumerable: ENUMERABLE in Attributes ? Attributes[ENUMERABLE] : current[ENUMERABLE],\n writable: false\n };\n }\n } return $defineProperty(O, P, Attributes);\n} : $defineProperty : function defineProperty(O, P, Attributes) {\n anObject(O);\n P = toPropertyKey(P);\n anObject(Attributes);\n if (IE8_DOM_DEFINE) try {\n return $defineProperty(O, P, Attributes);\n } catch (error) { /* empty */ }\n if ('get' in Attributes || 'set' in Attributes) throw new $TypeError('Accessors not supported');\n if ('value' in Attributes) O[P] = Attributes.value;\n return O;\n};\n", "'use strict';\nvar DESCRIPTORS = require('../internals/descriptors');\nvar definePropertyModule = require('../internals/object-define-property');\nvar createPropertyDescriptor = require('../internals/create-property-descriptor');\n\nmodule.exports = DESCRIPTORS ? function (object, key, value) {\n return definePropertyModule.f(object, key, createPropertyDescriptor(1, value));\n} : function (object, key, value) {\n object[key] = value;\n return object;\n};\n", "'use strict';\nvar DESCRIPTORS = require('../internals/descriptors');\nvar hasOwn = require('../internals/has-own-property');\n\nvar FunctionPrototype = Function.prototype;\n// eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe\nvar getDescriptor = DESCRIPTORS && Object.getOwnPropertyDescriptor;\n\nvar EXISTS = hasOwn(FunctionPrototype, 'name');\n// additional protection from minified / mangled / dropped function names\nvar PROPER = EXISTS && function something() { /* empty */ }.name === 'something';\nvar CONFIGURABLE = EXISTS && (!DESCRIPTORS || (DESCRIPTORS && getDescriptor(FunctionPrototype, 'name').configurable));\n\nmodule.exports = {\n EXISTS: EXISTS,\n PROPER: PROPER,\n CONFIGURABLE: CONFIGURABLE\n};\n", "'use strict';\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar isCallable = require('../internals/is-callable');\nvar store = require('../internals/shared-store');\n\nvar functionToString = uncurryThis(Function.toString);\n\n// this helper broken in `core-js@3.4.1-3.4.4`, so we can't use `shared` helper\nif (!isCallable(store.inspectSource)) {\n store.inspectSource = function (it) {\n return functionToString(it);\n };\n}\n\nmodule.exports = store.inspectSource;\n", "'use strict';\nvar globalThis = require('../internals/global-this');\nvar isCallable = require('../internals/is-callable');\n\nvar WeakMap = globalThis.WeakMap;\n\nmodule.exports = isCallable(WeakMap) && /native code/.test(String(WeakMap));\n", "'use strict';\nvar shared = require('../internals/shared');\nvar uid = require('../internals/uid');\n\nvar keys = shared('keys');\n\nmodule.exports = function (key) {\n return keys[key] || (keys[key] = uid(key));\n};\n", "'use strict';\nmodule.exports = {};\n", "'use strict';\nvar NATIVE_WEAK_MAP = require('../internals/weak-map-basic-detection');\nvar globalThis = require('../internals/global-this');\nvar isObject = require('../internals/is-object');\nvar createNonEnumerableProperty = require('../internals/create-non-enumerable-property');\nvar hasOwn = require('../internals/has-own-property');\nvar shared = require('../internals/shared-store');\nvar sharedKey = require('../internals/shared-key');\nvar hiddenKeys = require('../internals/hidden-keys');\n\nvar OBJECT_ALREADY_INITIALIZED = 'Object already initialized';\nvar TypeError = globalThis.TypeError;\nvar WeakMap = globalThis.WeakMap;\nvar set, get, has;\n\nvar enforce = function (it) {\n return has(it) ? get(it) : set(it, {});\n};\n\nvar getterFor = function (TYPE) {\n return function (it) {\n var state;\n if (!isObject(it) || (state = get(it)).type !== TYPE) {\n throw new TypeError('Incompatible receiver, ' + TYPE + ' required');\n } return state;\n };\n};\n\nif (NATIVE_WEAK_MAP || shared.state) {\n var store = shared.state || (shared.state = new WeakMap());\n /* eslint-disable no-self-assign -- prototype methods protection */\n store.get = store.get;\n store.has = store.has;\n store.set = store.set;\n /* eslint-enable no-self-assign -- prototype methods protection */\n set = function (it, metadata) {\n if (store.has(it)) throw new TypeError(OBJECT_ALREADY_INITIALIZED);\n metadata.facade = it;\n store.set(it, metadata);\n return metadata;\n };\n get = function (it) {\n return store.get(it) || {};\n };\n has = function (it) {\n return store.has(it);\n };\n} else {\n var STATE = sharedKey('state');\n hiddenKeys[STATE] = true;\n set = function (it, metadata) {\n if (hasOwn(it, STATE)) throw new TypeError(OBJECT_ALREADY_INITIALIZED);\n metadata.facade = it;\n createNonEnumerableProperty(it, STATE, metadata);\n return metadata;\n };\n get = function (it) {\n return hasOwn(it, STATE) ? it[STATE] : {};\n };\n has = function (it) {\n return hasOwn(it, STATE);\n };\n}\n\nmodule.exports = {\n set: set,\n get: get,\n has: has,\n enforce: enforce,\n getterFor: getterFor\n};\n", "'use strict';\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar fails = require('../internals/fails');\nvar isCallable = require('../internals/is-callable');\nvar hasOwn = require('../internals/has-own-property');\nvar DESCRIPTORS = require('../internals/descriptors');\nvar CONFIGURABLE_FUNCTION_NAME = require('../internals/function-name').CONFIGURABLE;\nvar inspectSource = require('../internals/inspect-source');\nvar InternalStateModule = require('../internals/internal-state');\n\nvar enforceInternalState = InternalStateModule.enforce;\nvar getInternalState = InternalStateModule.get;\nvar $String = String;\n// eslint-disable-next-line es/no-object-defineproperty -- safe\nvar defineProperty = Object.defineProperty;\nvar stringSlice = uncurryThis(''.slice);\nvar replace = uncurryThis(''.replace);\nvar join = uncurryThis([].join);\n\nvar CONFIGURABLE_LENGTH = DESCRIPTORS && !fails(function () {\n return defineProperty(function () { /* empty */ }, 'length', { value: 8 }).length !== 8;\n});\n\nvar TEMPLATE = String(String).split('String');\n\nvar makeBuiltIn = module.exports = function (value, name, options) {\n if (stringSlice($String(name), 0, 7) === 'Symbol(') {\n name = '[' + replace($String(name), /^Symbol\\(([^)]*)\\).*$/, '$1') + ']';\n }\n if (options && options.getter) name = 'get ' + name;\n if (options && options.setter) name = 'set ' + name;\n if (!hasOwn(value, 'name') || (CONFIGURABLE_FUNCTION_NAME && value.name !== name)) {\n if (DESCRIPTORS) defineProperty(value, 'name', { value: name, configurable: true });\n else value.name = name;\n }\n if (CONFIGURABLE_LENGTH && options && hasOwn(options, 'arity') && value.length !== options.arity) {\n defineProperty(value, 'length', { value: options.arity });\n }\n try {\n if (options && hasOwn(options, 'constructor') && options.constructor) {\n if (DESCRIPTORS) defineProperty(value, 'prototype', { writable: false });\n // in V8 ~ Chrome 53, prototypes of some methods, like `Array.prototype.values`, are non-writable\n } else if (value.prototype) value.prototype = undefined;\n } catch (error) { /* empty */ }\n var state = enforceInternalState(value);\n if (!hasOwn(state, 'source')) {\n state.source = join(TEMPLATE, typeof name == 'string' ? name : '');\n } return value;\n};\n\n// add fake Function#toString for correct work wrapped methods / constructors with methods like LoDash isNative\n// eslint-disable-next-line no-extend-native -- required\nFunction.prototype.toString = makeBuiltIn(function toString() {\n return isCallable(this) && getInternalState(this).source || inspectSource(this);\n}, 'toString');\n", "'use strict';\nvar isCallable = require('../internals/is-callable');\nvar definePropertyModule = require('../internals/object-define-property');\nvar makeBuiltIn = require('../internals/make-built-in');\nvar defineGlobalProperty = require('../internals/define-global-property');\n\nmodule.exports = function (O, key, value, options) {\n if (!options) options = {};\n var simple = options.enumerable;\n var name = options.name !== undefined ? options.name : key;\n if (isCallable(value)) makeBuiltIn(value, name, options);\n if (options.global) {\n if (simple) O[key] = value;\n else defineGlobalProperty(key, value);\n } else {\n try {\n if (!options.unsafe) delete O[key];\n else if (O[key]) simple = true;\n } catch (error) { /* empty */ }\n if (simple) O[key] = value;\n else definePropertyModule.f(O, key, {\n value: value,\n enumerable: false,\n configurable: !options.nonConfigurable,\n writable: !options.nonWritable\n });\n } return O;\n};\n", "'use strict';\nvar ceil = Math.ceil;\nvar floor = Math.floor;\n\n// `Math.trunc` method\n// https://tc39.es/ecma262/#sec-math.trunc\n// eslint-disable-next-line es/no-math-trunc -- safe\nmodule.exports = Math.trunc || function trunc(x) {\n var n = +x;\n return (n > 0 ? floor : ceil)(n);\n};\n", "'use strict';\nvar trunc = require('../internals/math-trunc');\n\n// `ToIntegerOrInfinity` abstract operation\n// https://tc39.es/ecma262/#sec-tointegerorinfinity\nmodule.exports = function (argument) {\n var number = +argument;\n // eslint-disable-next-line no-self-compare -- NaN check\n return number !== number || number === 0 ? 0 : trunc(number);\n};\n", "'use strict';\nvar toIntegerOrInfinity = require('../internals/to-integer-or-infinity');\n\nvar max = Math.max;\nvar min = Math.min;\n\n// Helper for a popular repeating case of the spec:\n// Let integer be ? ToInteger(index).\n// If integer < 0, let result be max((length + integer), 0); else let result be min(integer, length).\nmodule.exports = function (index, length) {\n var integer = toIntegerOrInfinity(index);\n return integer < 0 ? max(integer + length, 0) : min(integer, length);\n};\n", "'use strict';\nvar toIntegerOrInfinity = require('../internals/to-integer-or-infinity');\n\nvar min = Math.min;\n\n// `ToLength` abstract operation\n// https://tc39.es/ecma262/#sec-tolength\nmodule.exports = function (argument) {\n var len = toIntegerOrInfinity(argument);\n return len > 0 ? min(len, 0x1FFFFFFFFFFFFF) : 0; // 2 ** 53 - 1 == 9007199254740991\n};\n", "'use strict';\nvar toLength = require('../internals/to-length');\n\n// `LengthOfArrayLike` abstract operation\n// https://tc39.es/ecma262/#sec-lengthofarraylike\nmodule.exports = function (obj) {\n return toLength(obj.length);\n};\n", "'use strict';\nvar toIndexedObject = require('../internals/to-indexed-object');\nvar toAbsoluteIndex = require('../internals/to-absolute-index');\nvar lengthOfArrayLike = require('../internals/length-of-array-like');\n\n// `Array.prototype.{ indexOf, includes }` methods implementation\nvar createMethod = function (IS_INCLUDES) {\n return function ($this, el, fromIndex) {\n var O = toIndexedObject($this);\n var length = lengthOfArrayLike(O);\n if (length === 0) return !IS_INCLUDES && -1;\n var index = toAbsoluteIndex(fromIndex, length);\n var value;\n // Array#includes uses SameValueZero equality algorithm\n // eslint-disable-next-line no-self-compare -- NaN check\n if (IS_INCLUDES && el !== el) while (length > index) {\n value = O[index++];\n // eslint-disable-next-line no-self-compare -- NaN check\n if (value !== value) return true;\n // Array#indexOf ignores holes, Array#includes - not\n } else for (;length > index; index++) {\n if ((IS_INCLUDES || index in O) && O[index] === el) return IS_INCLUDES || index || 0;\n } return !IS_INCLUDES && -1;\n };\n};\n\nmodule.exports = {\n // `Array.prototype.includes` method\n // https://tc39.es/ecma262/#sec-array.prototype.includes\n includes: createMethod(true),\n // `Array.prototype.indexOf` method\n // https://tc39.es/ecma262/#sec-array.prototype.indexof\n indexOf: createMethod(false)\n};\n", "'use strict';\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar hasOwn = require('../internals/has-own-property');\nvar toIndexedObject = require('../internals/to-indexed-object');\nvar indexOf = require('../internals/array-includes').indexOf;\nvar hiddenKeys = require('../internals/hidden-keys');\n\nvar push = uncurryThis([].push);\n\nmodule.exports = function (object, names) {\n var O = toIndexedObject(object);\n var i = 0;\n var result = [];\n var key;\n for (key in O) !hasOwn(hiddenKeys, key) && hasOwn(O, key) && push(result, key);\n // Don't enum bug & hidden keys\n while (names.length > i) if (hasOwn(O, key = names[i++])) {\n ~indexOf(result, key) || push(result, key);\n }\n return result;\n};\n", "'use strict';\n// IE8- don't enum bug keys\nmodule.exports = [\n 'constructor',\n 'hasOwnProperty',\n 'isPrototypeOf',\n 'propertyIsEnumerable',\n 'toLocaleString',\n 'toString',\n 'valueOf'\n];\n", "'use strict';\nvar internalObjectKeys = require('../internals/object-keys-internal');\nvar enumBugKeys = require('../internals/enum-bug-keys');\n\nvar hiddenKeys = enumBugKeys.concat('length', 'prototype');\n\n// `Object.getOwnPropertyNames` method\n// https://tc39.es/ecma262/#sec-object.getownpropertynames\n// eslint-disable-next-line es/no-object-getownpropertynames -- safe\nexports.f = Object.getOwnPropertyNames || function getOwnPropertyNames(O) {\n return internalObjectKeys(O, hiddenKeys);\n};\n", "'use strict';\n// eslint-disable-next-line es/no-object-getownpropertysymbols -- safe\nexports.f = Object.getOwnPropertySymbols;\n", "'use strict';\nvar getBuiltIn = require('../internals/get-built-in');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar getOwnPropertyNamesModule = require('../internals/object-get-own-property-names');\nvar getOwnPropertySymbolsModule = require('../internals/object-get-own-property-symbols');\nvar anObject = require('../internals/an-object');\n\nvar concat = uncurryThis([].concat);\n\n// all object keys, includes non-enumerable and symbols\nmodule.exports = getBuiltIn('Reflect', 'ownKeys') || function ownKeys(it) {\n var keys = getOwnPropertyNamesModule.f(anObject(it));\n var getOwnPropertySymbols = getOwnPropertySymbolsModule.f;\n return getOwnPropertySymbols ? concat(keys, getOwnPropertySymbols(it)) : keys;\n};\n", "'use strict';\nvar hasOwn = require('../internals/has-own-property');\nvar ownKeys = require('../internals/own-keys');\nvar getOwnPropertyDescriptorModule = require('../internals/object-get-own-property-descriptor');\nvar definePropertyModule = require('../internals/object-define-property');\n\nmodule.exports = function (target, source, exceptions) {\n var keys = ownKeys(source);\n var defineProperty = definePropertyModule.f;\n var getOwnPropertyDescriptor = getOwnPropertyDescriptorModule.f;\n for (var i = 0; i < keys.length; i++) {\n var key = keys[i];\n if (!hasOwn(target, key) && !(exceptions && hasOwn(exceptions, key))) {\n defineProperty(target, key, getOwnPropertyDescriptor(source, key));\n }\n }\n};\n", "'use strict';\nvar fails = require('../internals/fails');\nvar isCallable = require('../internals/is-callable');\n\nvar replacement = /#|\\.prototype\\./;\n\nvar isForced = function (feature, detection) {\n var value = data[normalize(feature)];\n return value === POLYFILL ? true\n : value === NATIVE ? false\n : isCallable(detection) ? fails(detection)\n : !!detection;\n};\n\nvar normalize = isForced.normalize = function (string) {\n return String(string).replace(replacement, '.').toLowerCase();\n};\n\nvar data = isForced.data = {};\nvar NATIVE = isForced.NATIVE = 'N';\nvar POLYFILL = isForced.POLYFILL = 'P';\n\nmodule.exports = isForced;\n", "'use strict';\nvar globalThis = require('../internals/global-this');\nvar getOwnPropertyDescriptor = require('../internals/object-get-own-property-descriptor').f;\nvar createNonEnumerableProperty = require('../internals/create-non-enumerable-property');\nvar defineBuiltIn = require('../internals/define-built-in');\nvar defineGlobalProperty = require('../internals/define-global-property');\nvar copyConstructorProperties = require('../internals/copy-constructor-properties');\nvar isForced = require('../internals/is-forced');\n\n/*\n options.target - name of the target object\n options.global - target is the global object\n options.stat - export as static methods of target\n options.proto - export as prototype methods of target\n options.real - real prototype method for the `pure` version\n options.forced - export even if the native feature is available\n options.bind - bind methods to the target, required for the `pure` version\n options.wrap - wrap constructors to preventing global pollution, required for the `pure` version\n options.unsafe - use the simple assignment of property instead of delete + defineProperty\n options.sham - add a flag to not completely full polyfills\n options.enumerable - export as enumerable property\n options.dontCallGetSet - prevent calling a getter on target\n options.name - the .name of the function if it does not match the key\n*/\nmodule.exports = function (options, source) {\n var TARGET = options.target;\n var GLOBAL = options.global;\n var STATIC = options.stat;\n var FORCED, target, key, targetProperty, sourceProperty, descriptor;\n if (GLOBAL) {\n target = globalThis;\n } else if (STATIC) {\n target = globalThis[TARGET] || defineGlobalProperty(TARGET, {});\n } else {\n target = globalThis[TARGET] && globalThis[TARGET].prototype;\n }\n if (target) for (key in source) {\n sourceProperty = source[key];\n if (options.dontCallGetSet) {\n descriptor = getOwnPropertyDescriptor(target, key);\n targetProperty = descriptor && descriptor.value;\n } else targetProperty = target[key];\n FORCED = isForced(GLOBAL ? key : TARGET + (STATIC ? '.' : '#') + key, options.forced);\n // contained in target\n if (!FORCED && targetProperty !== undefined) {\n if (typeof sourceProperty == typeof targetProperty) continue;\n copyConstructorProperties(sourceProperty, targetProperty);\n }\n // add a flag to not completely full polyfills\n if (options.sham || (targetProperty && targetProperty.sham)) {\n createNonEnumerableProperty(sourceProperty, 'sham', true);\n }\n defineBuiltIn(target, key, sourceProperty, options);\n }\n};\n", "'use strict';\nvar wellKnownSymbol = require('../internals/well-known-symbol');\n\nvar TO_STRING_TAG = wellKnownSymbol('toStringTag');\nvar test = {};\n// eslint-disable-next-line unicorn/no-immediate-mutation -- ES3 syntax limitation\ntest[TO_STRING_TAG] = 'z';\n\nmodule.exports = String(test) === '[object z]';\n", "'use strict';\nvar TO_STRING_TAG_SUPPORT = require('../internals/to-string-tag-support');\nvar isCallable = require('../internals/is-callable');\nvar classofRaw = require('../internals/classof-raw');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\n\nvar TO_STRING_TAG = wellKnownSymbol('toStringTag');\nvar $Object = Object;\n\n// ES3 wrong here\nvar CORRECT_ARGUMENTS = classofRaw(function () { return arguments; }()) === 'Arguments';\n\n// fallback for IE11 Script Access Denied error\nvar tryGet = function (it, key) {\n try {\n return it[key];\n } catch (error) { /* empty */ }\n};\n\n// getting tag from ES6+ `Object.prototype.toString`\nmodule.exports = TO_STRING_TAG_SUPPORT ? classofRaw : function (it) {\n var O, tag, result;\n return it === undefined ? 'Undefined' : it === null ? 'Null'\n // @@toStringTag case\n : typeof (tag = tryGet(O = $Object(it), TO_STRING_TAG)) == 'string' ? tag\n // builtinTag case\n : CORRECT_ARGUMENTS ? classofRaw(O)\n // ES3 arguments fallback\n : (result = classofRaw(O)) === 'Object' && isCallable(O.callee) ? 'Arguments' : result;\n};\n", "'use strict';\nvar classof = require('../internals/classof');\n\nvar $String = String;\n\nmodule.exports = function (argument) {\n if (classof(argument) === 'Symbol') throw new TypeError('Cannot convert a Symbol value to a string');\n return $String(argument);\n};\n", "'use strict';\nvar internalObjectKeys = require('../internals/object-keys-internal');\nvar enumBugKeys = require('../internals/enum-bug-keys');\n\n// `Object.keys` method\n// https://tc39.es/ecma262/#sec-object.keys\n// eslint-disable-next-line es/no-object-keys -- safe\nmodule.exports = Object.keys || function keys(O) {\n return internalObjectKeys(O, enumBugKeys);\n};\n", "'use strict';\nvar DESCRIPTORS = require('../internals/descriptors');\nvar V8_PROTOTYPE_DEFINE_BUG = require('../internals/v8-prototype-define-bug');\nvar definePropertyModule = require('../internals/object-define-property');\nvar anObject = require('../internals/an-object');\nvar toIndexedObject = require('../internals/to-indexed-object');\nvar objectKeys = require('../internals/object-keys');\n\n// `Object.defineProperties` method\n// https://tc39.es/ecma262/#sec-object.defineproperties\n// eslint-disable-next-line es/no-object-defineproperties -- safe\nexports.f = DESCRIPTORS && !V8_PROTOTYPE_DEFINE_BUG ? Object.defineProperties : function defineProperties(O, Properties) {\n anObject(O);\n var props = toIndexedObject(Properties);\n var keys = objectKeys(Properties);\n var length = keys.length;\n var index = 0;\n var key;\n while (length > index) definePropertyModule.f(O, key = keys[index++], props[key]);\n return O;\n};\n", "'use strict';\nvar getBuiltIn = require('../internals/get-built-in');\n\nmodule.exports = getBuiltIn('document', 'documentElement');\n", "'use strict';\n/* global ActiveXObject -- old IE, WSH */\nvar anObject = require('../internals/an-object');\nvar definePropertiesModule = require('../internals/object-define-properties');\nvar enumBugKeys = require('../internals/enum-bug-keys');\nvar hiddenKeys = require('../internals/hidden-keys');\nvar html = require('../internals/html');\nvar documentCreateElement = require('../internals/document-create-element');\nvar sharedKey = require('../internals/shared-key');\n\nvar GT = '>';\nvar LT = '<';\nvar PROTOTYPE = 'prototype';\nvar SCRIPT = 'script';\nvar IE_PROTO = sharedKey('IE_PROTO');\n\nvar EmptyConstructor = function () { /* empty */ };\n\nvar scriptTag = function (content) {\n return LT + SCRIPT + GT + content + LT + '/' + SCRIPT + GT;\n};\n\n// Create object with fake `null` prototype: use ActiveX Object with cleared prototype\nvar NullProtoObjectViaActiveX = function (activeXDocument) {\n activeXDocument.write(scriptTag(''));\n activeXDocument.close();\n var temp = activeXDocument.parentWindow.Object;\n // eslint-disable-next-line no-useless-assignment -- avoid memory leak\n activeXDocument = null;\n return temp;\n};\n\n// Create object with fake `null` prototype: use iframe Object with cleared prototype\nvar NullProtoObjectViaIFrame = function () {\n // Thrash, waste and sodomy: IE GC bug\n var iframe = documentCreateElement('iframe');\n var JS = 'java' + SCRIPT + ':';\n var iframeDocument;\n iframe.style.display = 'none';\n html.appendChild(iframe);\n // https://github.com/zloirock/core-js/issues/475\n iframe.src = String(JS);\n iframeDocument = iframe.contentWindow.document;\n iframeDocument.open();\n iframeDocument.write(scriptTag('document.F=Object'));\n iframeDocument.close();\n return iframeDocument.F;\n};\n\n// Check for document.domain and active x support\n// No need to use active x approach when document.domain is not set\n// see https://github.com/es-shims/es5-shim/issues/150\n// variation of https://github.com/kitcambridge/es5-shim/commit/4f738ac066346\n// avoid IE GC bug\nvar activeXDocument;\nvar NullProtoObject = function () {\n try {\n activeXDocument = new ActiveXObject('htmlfile');\n } catch (error) { /* ignore */ }\n NullProtoObject = typeof document != 'undefined'\n ? document.domain && activeXDocument\n ? NullProtoObjectViaActiveX(activeXDocument) // old IE\n : NullProtoObjectViaIFrame()\n : NullProtoObjectViaActiveX(activeXDocument); // WSH\n var length = enumBugKeys.length;\n while (length--) delete NullProtoObject[PROTOTYPE][enumBugKeys[length]];\n return NullProtoObject();\n};\n\nhiddenKeys[IE_PROTO] = true;\n\n// `Object.create` method\n// https://tc39.es/ecma262/#sec-object.create\n// eslint-disable-next-line es/no-object-create -- safe\nmodule.exports = Object.create || function create(O, Properties) {\n var result;\n if (O !== null) {\n EmptyConstructor[PROTOTYPE] = anObject(O);\n result = new EmptyConstructor();\n EmptyConstructor[PROTOTYPE] = null;\n // add \"__proto__\" for Object.getPrototypeOf polyfill\n result[IE_PROTO] = O;\n } else result = NullProtoObject();\n return Properties === undefined ? result : definePropertiesModule.f(result, Properties);\n};\n", "'use strict';\nvar uncurryThis = require('../internals/function-uncurry-this');\n\nmodule.exports = uncurryThis([].slice);\n", "'use strict';\n/* eslint-disable es/no-object-getownpropertynames -- safe */\nvar classof = require('../internals/classof-raw');\nvar toIndexedObject = require('../internals/to-indexed-object');\nvar $getOwnPropertyNames = require('../internals/object-get-own-property-names').f;\nvar arraySlice = require('../internals/array-slice');\n\nvar windowNames = typeof window == 'object' && window && Object.getOwnPropertyNames\n ? Object.getOwnPropertyNames(window) : [];\n\nvar getWindowNames = function (it) {\n try {\n return $getOwnPropertyNames(it);\n } catch (error) {\n return arraySlice(windowNames);\n }\n};\n\n// fallback for IE11 buggy Object.getOwnPropertyNames with iframe and window\nmodule.exports.f = function getOwnPropertyNames(it) {\n return windowNames && classof(it) === 'Window'\n ? getWindowNames(it)\n : $getOwnPropertyNames(toIndexedObject(it));\n};\n", "'use strict';\nvar makeBuiltIn = require('../internals/make-built-in');\nvar defineProperty = require('../internals/object-define-property');\n\nmodule.exports = function (target, name, descriptor) {\n if (descriptor.get) makeBuiltIn(descriptor.get, name, { getter: true });\n if (descriptor.set) makeBuiltIn(descriptor.set, name, { setter: true });\n return defineProperty.f(target, name, descriptor);\n};\n", "'use strict';\nvar wellKnownSymbol = require('../internals/well-known-symbol');\n\nexports.f = wellKnownSymbol;\n", "'use strict';\nvar globalThis = require('../internals/global-this');\n\nmodule.exports = globalThis;\n", "'use strict';\nvar path = require('../internals/path');\nvar hasOwn = require('../internals/has-own-property');\nvar wrappedWellKnownSymbolModule = require('../internals/well-known-symbol-wrapped');\nvar defineProperty = require('../internals/object-define-property').f;\n\nmodule.exports = function (NAME) {\n var Symbol = path.Symbol || (path.Symbol = {});\n if (!hasOwn(Symbol, NAME)) defineProperty(Symbol, NAME, {\n value: wrappedWellKnownSymbolModule.f(NAME)\n });\n};\n", "'use strict';\nvar call = require('../internals/function-call');\nvar getBuiltIn = require('../internals/get-built-in');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\nvar defineBuiltIn = require('../internals/define-built-in');\n\nmodule.exports = function () {\n var Symbol = getBuiltIn('Symbol');\n var SymbolPrototype = Symbol && Symbol.prototype;\n var valueOf = SymbolPrototype && SymbolPrototype.valueOf;\n var TO_PRIMITIVE = wellKnownSymbol('toPrimitive');\n\n if (SymbolPrototype && !SymbolPrototype[TO_PRIMITIVE]) {\n // `Symbol.prototype[@@toPrimitive]` method\n // https://tc39.es/ecma262/#sec-symbol.prototype-@@toprimitive\n // eslint-disable-next-line no-unused-vars -- required for .length\n defineBuiltIn(SymbolPrototype, TO_PRIMITIVE, function (hint) {\n return call(valueOf, this);\n }, { arity: 1 });\n }\n};\n", "'use strict';\nvar defineProperty = require('../internals/object-define-property').f;\nvar hasOwn = require('../internals/has-own-property');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\n\nvar TO_STRING_TAG = wellKnownSymbol('toStringTag');\n\nmodule.exports = function (target, TAG, STATIC) {\n if (target && !STATIC) target = target.prototype;\n if (target && !hasOwn(target, TO_STRING_TAG)) {\n defineProperty(target, TO_STRING_TAG, { configurable: true, value: TAG });\n }\n};\n", "'use strict';\nvar classofRaw = require('../internals/classof-raw');\nvar uncurryThis = require('../internals/function-uncurry-this');\n\nmodule.exports = function (fn) {\n // Nashorn bug:\n // https://github.com/zloirock/core-js/issues/1128\n // https://github.com/zloirock/core-js/issues/1130\n if (classofRaw(fn) === 'Function') return uncurryThis(fn);\n};\n", "'use strict';\nvar uncurryThis = require('../internals/function-uncurry-this-clause');\nvar aCallable = require('../internals/a-callable');\nvar NATIVE_BIND = require('../internals/function-bind-native');\n\nvar bind = uncurryThis(uncurryThis.bind);\n\n// optional / simple context binding\nmodule.exports = function (fn, that) {\n aCallable(fn);\n return that === undefined ? fn : NATIVE_BIND ? bind(fn, that) : function (/* ...args */) {\n return fn.apply(that, arguments);\n };\n};\n", "'use strict';\nvar classof = require('../internals/classof-raw');\n\n// `IsArray` abstract operation\n// https://tc39.es/ecma262/#sec-isarray\n// eslint-disable-next-line es/no-array-isarray -- safe\nmodule.exports = Array.isArray || function isArray(argument) {\n return classof(argument) === 'Array';\n};\n", "'use strict';\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar fails = require('../internals/fails');\nvar isCallable = require('../internals/is-callable');\nvar classof = require('../internals/classof');\nvar getBuiltIn = require('../internals/get-built-in');\nvar inspectSource = require('../internals/inspect-source');\n\nvar noop = function () { /* empty */ };\nvar construct = getBuiltIn('Reflect', 'construct');\nvar constructorRegExp = /^\\s*(?:class|function)\\b/;\nvar exec = uncurryThis(constructorRegExp.exec);\nvar INCORRECT_TO_STRING = !constructorRegExp.test(noop);\n\nvar isConstructorModern = function isConstructor(argument) {\n if (!isCallable(argument)) return false;\n try {\n construct(noop, [], argument);\n return true;\n } catch (error) {\n return false;\n }\n};\n\nvar isConstructorLegacy = function isConstructor(argument) {\n if (!isCallable(argument)) return false;\n switch (classof(argument)) {\n case 'AsyncFunction':\n case 'GeneratorFunction':\n case 'AsyncGeneratorFunction': return false;\n }\n try {\n // we can't check .prototype since constructors produced by .bind haven't it\n // `Function#toString` throws on some built-it function in some legacy engines\n // (for example, `DOMQuad` and similar in FF41-)\n return INCORRECT_TO_STRING || !!exec(constructorRegExp, inspectSource(argument));\n } catch (error) {\n return true;\n }\n};\n\nisConstructorLegacy.sham = true;\n\n// `IsConstructor` abstract operation\n// https://tc39.es/ecma262/#sec-isconstructor\nmodule.exports = !construct || fails(function () {\n var called;\n return isConstructorModern(isConstructorModern.call)\n || !isConstructorModern(Object)\n || !isConstructorModern(function () { called = true; })\n || called;\n}) ? isConstructorLegacy : isConstructorModern;\n", "'use strict';\nvar isArray = require('../internals/is-array');\nvar isConstructor = require('../internals/is-constructor');\nvar isObject = require('../internals/is-object');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\n\nvar SPECIES = wellKnownSymbol('species');\nvar $Array = Array;\n\n// a part of `ArraySpeciesCreate` abstract operation\n// https://tc39.es/ecma262/#sec-arrayspeciescreate\nmodule.exports = function (originalArray) {\n var C;\n if (isArray(originalArray)) {\n C = originalArray.constructor;\n // cross-realm fallback\n if (isConstructor(C) && (C === $Array || isArray(C.prototype))) C = undefined;\n else if (isObject(C)) {\n C = C[SPECIES];\n if (C === null) C = undefined;\n }\n } return C === undefined ? $Array : C;\n};\n", "'use strict';\nvar arraySpeciesConstructor = require('../internals/array-species-constructor');\n\n// `ArraySpeciesCreate` abstract operation\n// https://tc39.es/ecma262/#sec-arrayspeciescreate\nmodule.exports = function (originalArray, length) {\n return new (arraySpeciesConstructor(originalArray))(length === 0 ? 0 : length);\n};\n", "'use strict';\nvar DESCRIPTORS = require('../internals/descriptors');\nvar definePropertyModule = require('../internals/object-define-property');\nvar createPropertyDescriptor = require('../internals/create-property-descriptor');\n\nmodule.exports = function (object, key, value) {\n if (DESCRIPTORS) definePropertyModule.f(object, key, createPropertyDescriptor(0, value));\n else object[key] = value;\n};\n", "'use strict';\nvar bind = require('../internals/function-bind-context');\nvar IndexedObject = require('../internals/indexed-object');\nvar toObject = require('../internals/to-object');\nvar lengthOfArrayLike = require('../internals/length-of-array-like');\nvar arraySpeciesCreate = require('../internals/array-species-create');\nvar createProperty = require('../internals/create-property');\n\n// `Array.prototype.{ forEach, map, filter, some, every, find, findIndex, filterReject }` methods implementation\nvar createMethod = function (TYPE) {\n var IS_MAP = TYPE === 1;\n var IS_FILTER = TYPE === 2;\n var IS_SOME = TYPE === 3;\n var IS_EVERY = TYPE === 4;\n var IS_FIND_INDEX = TYPE === 6;\n var IS_FILTER_REJECT = TYPE === 7;\n var NO_HOLES = TYPE === 5 || IS_FIND_INDEX;\n return function ($this, callbackfn, that) {\n var O = toObject($this);\n var self = IndexedObject(O);\n var length = lengthOfArrayLike(self);\n var boundFunction = bind(callbackfn, that);\n var index = 0;\n var resIndex = 0;\n var target = IS_MAP ? arraySpeciesCreate($this, length) : IS_FILTER || IS_FILTER_REJECT ? arraySpeciesCreate($this, 0) : undefined;\n var value, result;\n for (;length > index; index++) if (NO_HOLES || index in self) {\n value = self[index];\n result = boundFunction(value, index, O);\n if (TYPE) {\n if (IS_MAP) createProperty(target, index, result); // map\n else if (result) switch (TYPE) {\n case 3: return true; // some\n case 5: return value; // find\n case 6: return index; // findIndex\n case 2: createProperty(target, resIndex++, value); // filter\n } else switch (TYPE) {\n case 4: return false; // every\n case 7: createProperty(target, resIndex++, value); // filterReject\n }\n }\n }\n return IS_FIND_INDEX ? -1 : IS_SOME || IS_EVERY ? IS_EVERY : target;\n };\n};\n\nmodule.exports = {\n // `Array.prototype.forEach` method\n // https://tc39.es/ecma262/#sec-array.prototype.foreach\n forEach: createMethod(0),\n // `Array.prototype.map` method\n // https://tc39.es/ecma262/#sec-array.prototype.map\n map: createMethod(1),\n // `Array.prototype.filter` method\n // https://tc39.es/ecma262/#sec-array.prototype.filter\n filter: createMethod(2),\n // `Array.prototype.some` method\n // https://tc39.es/ecma262/#sec-array.prototype.some\n some: createMethod(3),\n // `Array.prototype.every` method\n // https://tc39.es/ecma262/#sec-array.prototype.every\n every: createMethod(4),\n // `Array.prototype.find` method\n // https://tc39.es/ecma262/#sec-array.prototype.find\n find: createMethod(5),\n // `Array.prototype.findIndex` method\n // https://tc39.es/ecma262/#sec-array.prototype.findIndex\n findIndex: createMethod(6),\n // `Array.prototype.filterReject` method\n // https://github.com/tc39/proposal-array-filtering\n filterReject: createMethod(7)\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar globalThis = require('../internals/global-this');\nvar call = require('../internals/function-call');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar IS_PURE = require('../internals/is-pure');\nvar DESCRIPTORS = require('../internals/descriptors');\nvar NATIVE_SYMBOL = require('../internals/symbol-constructor-detection');\nvar fails = require('../internals/fails');\nvar hasOwn = require('../internals/has-own-property');\nvar isPrototypeOf = require('../internals/object-is-prototype-of');\nvar anObject = require('../internals/an-object');\nvar toIndexedObject = require('../internals/to-indexed-object');\nvar toPropertyKey = require('../internals/to-property-key');\nvar $toString = require('../internals/to-string');\nvar createPropertyDescriptor = require('../internals/create-property-descriptor');\nvar nativeObjectCreate = require('../internals/object-create');\nvar objectKeys = require('../internals/object-keys');\nvar getOwnPropertyNamesModule = require('../internals/object-get-own-property-names');\nvar getOwnPropertyNamesExternal = require('../internals/object-get-own-property-names-external');\nvar getOwnPropertySymbolsModule = require('../internals/object-get-own-property-symbols');\nvar getOwnPropertyDescriptorModule = require('../internals/object-get-own-property-descriptor');\nvar definePropertyModule = require('../internals/object-define-property');\nvar definePropertiesModule = require('../internals/object-define-properties');\nvar propertyIsEnumerableModule = require('../internals/object-property-is-enumerable');\nvar defineBuiltIn = require('../internals/define-built-in');\nvar defineBuiltInAccessor = require('../internals/define-built-in-accessor');\nvar shared = require('../internals/shared');\nvar sharedKey = require('../internals/shared-key');\nvar hiddenKeys = require('../internals/hidden-keys');\nvar uid = require('../internals/uid');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\nvar wrappedWellKnownSymbolModule = require('../internals/well-known-symbol-wrapped');\nvar defineWellKnownSymbol = require('../internals/well-known-symbol-define');\nvar defineSymbolToPrimitive = require('../internals/symbol-define-to-primitive');\nvar setToStringTag = require('../internals/set-to-string-tag');\nvar InternalStateModule = require('../internals/internal-state');\nvar $forEach = require('../internals/array-iteration').forEach;\n\nvar HIDDEN = sharedKey('hidden');\nvar SYMBOL = 'Symbol';\nvar PROTOTYPE = 'prototype';\n\nvar setInternalState = InternalStateModule.set;\nvar getInternalState = InternalStateModule.getterFor(SYMBOL);\n\nvar ObjectPrototype = Object[PROTOTYPE];\nvar $Symbol = globalThis.Symbol;\nvar SymbolPrototype = $Symbol && $Symbol[PROTOTYPE];\nvar RangeError = globalThis.RangeError;\nvar TypeError = globalThis.TypeError;\nvar QObject = globalThis.QObject;\nvar nativeGetOwnPropertyDescriptor = getOwnPropertyDescriptorModule.f;\nvar nativeDefineProperty = definePropertyModule.f;\nvar nativeGetOwnPropertyNames = getOwnPropertyNamesExternal.f;\nvar nativePropertyIsEnumerable = propertyIsEnumerableModule.f;\nvar push = uncurryThis([].push);\n\nvar AllSymbols = shared('symbols');\nvar ObjectPrototypeSymbols = shared('op-symbols');\nvar WellKnownSymbolsStore = shared('wks');\n\n// Don't use setters in Qt Script, https://github.com/zloirock/core-js/issues/173\nvar USE_SETTER = !QObject || !QObject[PROTOTYPE] || !QObject[PROTOTYPE].findChild;\n\n// fallback for old Android, https://code.google.com/p/v8/issues/detail?id=687\nvar fallbackDefineProperty = function (O, P, Attributes) {\n var ObjectPrototypeDescriptor = nativeGetOwnPropertyDescriptor(ObjectPrototype, P);\n if (ObjectPrototypeDescriptor) delete ObjectPrototype[P];\n nativeDefineProperty(O, P, Attributes);\n if (ObjectPrototypeDescriptor && O !== ObjectPrototype) {\n nativeDefineProperty(ObjectPrototype, P, ObjectPrototypeDescriptor);\n } return O;\n};\n\nvar setSymbolDescriptor = DESCRIPTORS && fails(function () {\n return nativeObjectCreate(nativeDefineProperty({}, 'a', {\n get: function () { return nativeDefineProperty(this, 'a', { value: 7 }).a; }\n })).a !== 7;\n}) ? fallbackDefineProperty : nativeDefineProperty;\n\nvar wrap = function (tag, description) {\n var symbol = AllSymbols[tag] = nativeObjectCreate(SymbolPrototype);\n setInternalState(symbol, {\n type: SYMBOL,\n tag: tag,\n description: description\n });\n if (!DESCRIPTORS) symbol.description = description;\n return symbol;\n};\n\nvar $defineProperty = function defineProperty(O, P, Attributes) {\n if (O === ObjectPrototype) $defineProperty(ObjectPrototypeSymbols, P, Attributes);\n anObject(O);\n var key = toPropertyKey(P);\n anObject(Attributes);\n if (hasOwn(AllSymbols, key)) {\n // first definition - default non-enumerable; redefinition - preserve existing state\n if (!('enumerable' in Attributes) ? !hasOwn(O, key) || (hasOwn(O, HIDDEN) && O[HIDDEN][key]) : !Attributes.enumerable) {\n if (!hasOwn(O, HIDDEN)) nativeDefineProperty(O, HIDDEN, createPropertyDescriptor(1, nativeObjectCreate(null)));\n O[HIDDEN][key] = true;\n } else {\n if (hasOwn(O, HIDDEN) && O[HIDDEN][key]) O[HIDDEN][key] = false;\n Attributes = nativeObjectCreate(Attributes, { enumerable: createPropertyDescriptor(0, false) });\n } return setSymbolDescriptor(O, key, Attributes);\n } return nativeDefineProperty(O, key, Attributes);\n};\n\nvar $defineProperties = function defineProperties(O, Properties) {\n anObject(O);\n var properties = toIndexedObject(Properties);\n var keys = objectKeys(properties).concat($getOwnPropertySymbols(properties));\n $forEach(keys, function (key) {\n if (!DESCRIPTORS || call($propertyIsEnumerable, properties, key)) $defineProperty(O, key, properties[key]);\n });\n return O;\n};\n\nvar $create = function create(O, Properties) {\n return Properties === undefined ? nativeObjectCreate(O) : $defineProperties(nativeObjectCreate(O), Properties);\n};\n\nvar $propertyIsEnumerable = function propertyIsEnumerable(V) {\n var P = toPropertyKey(V);\n var enumerable = call(nativePropertyIsEnumerable, this, P);\n if (this === ObjectPrototype && hasOwn(AllSymbols, P) && !hasOwn(ObjectPrototypeSymbols, P)) return false;\n return enumerable || !hasOwn(this, P) || !hasOwn(AllSymbols, P) || hasOwn(this, HIDDEN) && this[HIDDEN][P]\n ? enumerable : true;\n};\n\nvar $getOwnPropertyDescriptor = function getOwnPropertyDescriptor(O, P) {\n var it = toIndexedObject(O);\n var key = toPropertyKey(P);\n if (it === ObjectPrototype && hasOwn(AllSymbols, key) && !hasOwn(ObjectPrototypeSymbols, key)) return;\n var descriptor = nativeGetOwnPropertyDescriptor(it, key);\n if (descriptor && hasOwn(AllSymbols, key) && !(hasOwn(it, HIDDEN) && it[HIDDEN][key])) {\n descriptor.enumerable = true;\n }\n return descriptor;\n};\n\nvar $getOwnPropertyNames = function getOwnPropertyNames(O) {\n var names = nativeGetOwnPropertyNames(toIndexedObject(O));\n var result = [];\n $forEach(names, function (key) {\n if (!hasOwn(AllSymbols, key) && !hasOwn(hiddenKeys, key)) push(result, key);\n });\n return result;\n};\n\nvar $getOwnPropertySymbols = function (O) {\n var IS_OBJECT_PROTOTYPE = O === ObjectPrototype;\n var names = nativeGetOwnPropertyNames(IS_OBJECT_PROTOTYPE ? ObjectPrototypeSymbols : toIndexedObject(O));\n var result = [];\n $forEach(names, function (key) {\n if (hasOwn(AllSymbols, key) && (!IS_OBJECT_PROTOTYPE || hasOwn(ObjectPrototype, key))) {\n push(result, AllSymbols[key]);\n }\n });\n return result;\n};\n\n// `Symbol` constructor\n// https://tc39.es/ecma262/#sec-symbol-constructor\nif (!NATIVE_SYMBOL) {\n $Symbol = function Symbol() {\n if (isPrototypeOf(SymbolPrototype, this)) throw new TypeError('Symbol is not a constructor');\n var description = !arguments.length || arguments[0] === undefined ? undefined : $toString(arguments[0]);\n var tag = uid(description);\n var setter = function (value) {\n var $this = this === undefined ? globalThis : this;\n if ($this === ObjectPrototype) call(setter, ObjectPrototypeSymbols, value);\n if (hasOwn($this, HIDDEN) && hasOwn($this[HIDDEN], tag)) $this[HIDDEN][tag] = false;\n var descriptor = createPropertyDescriptor(1, value);\n try {\n setSymbolDescriptor($this, tag, descriptor);\n } catch (error) {\n if (!(error instanceof RangeError)) throw error;\n fallbackDefineProperty($this, tag, descriptor);\n }\n };\n if (DESCRIPTORS && USE_SETTER) setSymbolDescriptor(ObjectPrototype, tag, { configurable: true, set: setter });\n return wrap(tag, description);\n };\n\n SymbolPrototype = $Symbol[PROTOTYPE];\n\n defineBuiltIn(SymbolPrototype, 'toString', function toString() {\n return getInternalState(this).tag;\n });\n\n defineBuiltIn($Symbol, 'withoutSetter', function (description) {\n return wrap(uid(description), description);\n });\n\n propertyIsEnumerableModule.f = $propertyIsEnumerable;\n definePropertyModule.f = $defineProperty;\n definePropertiesModule.f = $defineProperties;\n getOwnPropertyDescriptorModule.f = $getOwnPropertyDescriptor;\n getOwnPropertyNamesModule.f = getOwnPropertyNamesExternal.f = $getOwnPropertyNames;\n getOwnPropertySymbolsModule.f = $getOwnPropertySymbols;\n\n wrappedWellKnownSymbolModule.f = function (name) {\n return wrap(wellKnownSymbol(name), name);\n };\n\n if (DESCRIPTORS) {\n // https://tc39.es/ecma262/#sec-symbol.prototype.description\n defineBuiltInAccessor(SymbolPrototype, 'description', {\n configurable: true,\n get: function description() {\n return getInternalState(this).description;\n }\n });\n if (!IS_PURE) {\n defineBuiltIn(ObjectPrototype, 'propertyIsEnumerable', $propertyIsEnumerable, { unsafe: true });\n }\n }\n}\n\n$({ global: true, constructor: true, wrap: true, forced: !NATIVE_SYMBOL, sham: !NATIVE_SYMBOL }, {\n Symbol: $Symbol\n});\n\n$forEach(objectKeys(WellKnownSymbolsStore), function (name) {\n defineWellKnownSymbol(name);\n});\n\n$({ target: SYMBOL, stat: true, forced: !NATIVE_SYMBOL }, {\n useSetter: function () { USE_SETTER = true; },\n useSimple: function () { USE_SETTER = false; }\n});\n\n$({ target: 'Object', stat: true, forced: !NATIVE_SYMBOL, sham: !DESCRIPTORS }, {\n // `Object.create` method\n // https://tc39.es/ecma262/#sec-object.create\n create: $create,\n // `Object.defineProperty` method\n // https://tc39.es/ecma262/#sec-object.defineproperty\n defineProperty: $defineProperty,\n // `Object.defineProperties` method\n // https://tc39.es/ecma262/#sec-object.defineproperties\n defineProperties: $defineProperties,\n // `Object.getOwnPropertyDescriptor` method\n // https://tc39.es/ecma262/#sec-object.getownpropertydescriptors\n getOwnPropertyDescriptor: $getOwnPropertyDescriptor\n});\n\n$({ target: 'Object', stat: true, forced: !NATIVE_SYMBOL }, {\n // `Object.getOwnPropertyNames` method\n // https://tc39.es/ecma262/#sec-object.getownpropertynames\n getOwnPropertyNames: $getOwnPropertyNames\n});\n\n// `Symbol.prototype[@@toPrimitive]` method\n// https://tc39.es/ecma262/#sec-symbol.prototype-@@toprimitive\ndefineSymbolToPrimitive();\n\n// `Symbol.prototype[@@toStringTag]` property\n// https://tc39.es/ecma262/#sec-symbol.prototype-@@tostringtag\nsetToStringTag($Symbol, SYMBOL);\n\nhiddenKeys[HIDDEN] = true;\n", "'use strict';\nvar NATIVE_SYMBOL = require('../internals/symbol-constructor-detection');\n\n/* eslint-disable es/no-symbol -- safe */\nmodule.exports = NATIVE_SYMBOL && !!Symbol['for'] && !!Symbol.keyFor;\n", "'use strict';\nvar $ = require('../internals/export');\nvar getBuiltIn = require('../internals/get-built-in');\nvar hasOwn = require('../internals/has-own-property');\nvar toString = require('../internals/to-string');\nvar shared = require('../internals/shared');\nvar NATIVE_SYMBOL_REGISTRY = require('../internals/symbol-registry-detection');\n\nvar StringToSymbolRegistry = shared('string-to-symbol-registry');\nvar SymbolToStringRegistry = shared('symbol-to-string-registry');\n\n// `Symbol.for` method\n// https://tc39.es/ecma262/#sec-symbol.for\n$({ target: 'Symbol', stat: true, forced: !NATIVE_SYMBOL_REGISTRY }, {\n 'for': function (key) {\n var string = toString(key);\n if (hasOwn(StringToSymbolRegistry, string)) return StringToSymbolRegistry[string];\n var symbol = getBuiltIn('Symbol')(string);\n StringToSymbolRegistry[string] = symbol;\n SymbolToStringRegistry[symbol] = string;\n return symbol;\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar hasOwn = require('../internals/has-own-property');\nvar isSymbol = require('../internals/is-symbol');\nvar tryToString = require('../internals/try-to-string');\nvar shared = require('../internals/shared');\nvar NATIVE_SYMBOL_REGISTRY = require('../internals/symbol-registry-detection');\n\nvar SymbolToStringRegistry = shared('symbol-to-string-registry');\n\n// `Symbol.keyFor` method\n// https://tc39.es/ecma262/#sec-symbol.keyfor\n$({ target: 'Symbol', stat: true, forced: !NATIVE_SYMBOL_REGISTRY }, {\n keyFor: function keyFor(sym) {\n if (!isSymbol(sym)) throw new TypeError(tryToString(sym) + ' is not a symbol');\n if (hasOwn(SymbolToStringRegistry, sym)) return SymbolToStringRegistry[sym];\n }\n});\n", "'use strict';\nvar NATIVE_BIND = require('../internals/function-bind-native');\n\nvar FunctionPrototype = Function.prototype;\nvar apply = FunctionPrototype.apply;\nvar call = FunctionPrototype.call;\n\n// eslint-disable-next-line es/no-function-prototype-bind, es/no-reflect -- safe\nmodule.exports = typeof Reflect == 'object' && Reflect.apply || (NATIVE_BIND ? call.bind(apply) : function () {\n return call.apply(apply, arguments);\n});\n", "'use strict';\nvar isObject = require('../internals/is-object');\nvar getInternalState = require('../internals/internal-state').get;\n\nmodule.exports = function isRawJSON(O) {\n if (!isObject(O)) return false;\n var state = getInternalState(O);\n return !!state && state.type === 'RawJSON';\n};\n", "'use strict';\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar hasOwn = require('../internals/has-own-property');\n\nvar $SyntaxError = SyntaxError;\nvar $parseInt = parseInt;\nvar fromCharCode = String.fromCharCode;\nvar at = uncurryThis(''.charAt);\nvar slice = uncurryThis(''.slice);\nvar exec = uncurryThis(/./.exec);\n\nvar codePoints = {\n '\\\\\"': '\"',\n '\\\\\\\\': '\\\\',\n '\\\\/': '/',\n '\\\\b': '\\b',\n '\\\\f': '\\f',\n '\\\\n': '\\n',\n '\\\\r': '\\r',\n '\\\\t': '\\t'\n};\n\nvar IS_4_HEX_DIGITS = /^[\\da-f]{4}$/i;\n// eslint-disable-next-line regexp/no-control-character -- safe\nvar IS_C0_CONTROL_CODE = /^[\\u0000-\\u001F]$/;\n\nmodule.exports = function (source, i) {\n var unterminated = true;\n var value = '';\n while (i < source.length) {\n var chr = at(source, i);\n if (chr === '\\\\') {\n var twoChars = slice(source, i, i + 2);\n if (hasOwn(codePoints, twoChars)) {\n value += codePoints[twoChars];\n i += 2;\n } else if (twoChars === '\\\\u') {\n i += 2;\n var fourHexDigits = slice(source, i, i + 4);\n if (!exec(IS_4_HEX_DIGITS, fourHexDigits)) throw new $SyntaxError('Bad Unicode escape at: ' + i);\n value += fromCharCode($parseInt(fourHexDigits, 16));\n i += 4;\n } else throw new $SyntaxError('Unknown escape sequence: \"' + twoChars + '\"');\n } else if (chr === '\"') {\n unterminated = false;\n i++;\n break;\n } else {\n if (exec(IS_C0_CONTROL_CODE, chr)) throw new $SyntaxError('Bad control character in string literal at: ' + i);\n value += chr;\n i++;\n }\n }\n if (unterminated) throw new $SyntaxError('Unterminated string at: ' + i);\n return { value: value, end: i };\n};\n", "'use strict';\n/* eslint-disable es/no-json -- safe */\nvar fails = require('../internals/fails');\n\nmodule.exports = !fails(function () {\n var unsafeInt = '9007199254740993';\n // eslint-disable-next-line es/no-json-rawjson -- feature detection\n var raw = JSON.rawJSON(unsafeInt);\n // eslint-disable-next-line es/no-json-israwjson -- feature detection\n return !JSON.isRawJSON(raw) || JSON.stringify(raw) !== unsafeInt;\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar getBuiltIn = require('../internals/get-built-in');\nvar apply = require('../internals/function-apply');\nvar call = require('../internals/function-call');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar fails = require('../internals/fails');\nvar isArray = require('../internals/is-array');\nvar isCallable = require('../internals/is-callable');\nvar isRawJSON = require('../internals/is-raw-json');\nvar isSymbol = require('../internals/is-symbol');\nvar classof = require('../internals/classof-raw');\nvar toString = require('../internals/to-string');\nvar arraySlice = require('../internals/array-slice');\nvar parseJSONString = require('../internals/parse-json-string');\nvar uid = require('../internals/uid');\nvar NATIVE_SYMBOL = require('../internals/symbol-constructor-detection');\nvar NATIVE_RAW_JSON = require('../internals/native-raw-json');\n\nvar $String = String;\nvar $stringify = getBuiltIn('JSON', 'stringify');\nvar exec = uncurryThis(/./.exec);\nvar charAt = uncurryThis(''.charAt);\nvar charCodeAt = uncurryThis(''.charCodeAt);\nvar replace = uncurryThis(''.replace);\nvar slice = uncurryThis(''.slice);\nvar push = uncurryThis([].push);\nvar numberToString = uncurryThis(1.1.toString);\n\nvar surrogates = /[\\uD800-\\uDFFF]/g;\nvar leadingSurrogates = /^[\\uD800-\\uDBFF]$/;\nvar trailingSurrogates = /^[\\uDC00-\\uDFFF]$/;\n\nvar MARK = uid();\nvar MARK_LENGTH = MARK.length;\n\nvar WRONG_SYMBOLS_CONVERSION = !NATIVE_SYMBOL || fails(function () {\n var symbol = getBuiltIn('Symbol')('stringify detection');\n // MS Edge converts symbol values to JSON as {}\n return $stringify([symbol]) !== '[null]'\n // WebKit converts symbol values to JSON as null\n || $stringify({ a: symbol }) !== '{}'\n // V8 throws on boxed symbols\n || $stringify(Object(symbol)) !== '{}';\n});\n\n// https://github.com/tc39/proposal-well-formed-stringify\nvar ILL_FORMED_UNICODE = fails(function () {\n return $stringify('\\uDF06\\uD834') !== '\"\\\\udf06\\\\ud834\"'\n || $stringify('\\uDEAD') !== '\"\\\\udead\"';\n});\n\nvar stringifyWithProperSymbolsConversion = WRONG_SYMBOLS_CONVERSION ? function (it, replacer) {\n var args = arraySlice(arguments);\n var $replacer = getReplacerFunction(replacer);\n if (!isCallable($replacer) && (it === undefined || isSymbol(it))) return; // IE8 returns string on undefined\n args[1] = function (key, value) {\n // some old implementations (like WebKit) could pass numbers as keys\n if (isCallable($replacer)) value = call($replacer, this, $String(key), value);\n if (!isSymbol(value)) return value;\n };\n return apply($stringify, null, args);\n} : $stringify;\n\nvar fixIllFormedJSON = function (match, offset, string) {\n var prev = charAt(string, offset - 1);\n var next = charAt(string, offset + 1);\n if (\n (exec(leadingSurrogates, match) && !exec(trailingSurrogates, next)) ||\n (exec(trailingSurrogates, match) && !exec(leadingSurrogates, prev))\n ) {\n return '\\\\u' + numberToString(charCodeAt(match, 0), 16);\n } return match;\n};\n\nvar getReplacerFunction = function (replacer) {\n if (isCallable(replacer)) return replacer;\n if (!isArray(replacer)) return;\n var rawLength = replacer.length;\n var keys = [];\n for (var i = 0; i < rawLength; i++) {\n var element = replacer[i];\n if (typeof element == 'string') push(keys, element);\n else if (typeof element == 'number' || classof(element) === 'Number' || classof(element) === 'String') push(keys, toString(element));\n }\n var keysLength = keys.length;\n var root = true;\n return function (key, value) {\n if (root) {\n root = false;\n return value;\n }\n if (isArray(this)) return value;\n for (var j = 0; j < keysLength; j++) if (keys[j] === key) return value;\n };\n};\n\n// `JSON.stringify` method\n// https://tc39.es/ecma262/#sec-json.stringify\n// https://github.com/tc39/proposal-json-parse-with-source\nif ($stringify) $({ target: 'JSON', stat: true, arity: 3, forced: WRONG_SYMBOLS_CONVERSION || ILL_FORMED_UNICODE || !NATIVE_RAW_JSON }, {\n stringify: function stringify(text, replacer, space) {\n var replacerFunction = getReplacerFunction(replacer);\n var rawStrings = [];\n\n var json = stringifyWithProperSymbolsConversion(text, function (key, value) {\n // some old implementations (like WebKit) could pass numbers as keys\n var v = isCallable(replacerFunction) ? call(replacerFunction, this, $String(key), value) : value;\n return !NATIVE_RAW_JSON && isRawJSON(v) ? MARK + (push(rawStrings, v.rawJSON) - 1) : v;\n }, space);\n\n if (typeof json != 'string') return json;\n\n if (ILL_FORMED_UNICODE) json = replace(json, surrogates, fixIllFormedJSON);\n\n if (NATIVE_RAW_JSON) return json;\n\n var result = '';\n var length = json.length;\n\n for (var i = 0; i < length; i++) {\n var chr = charAt(json, i);\n if (chr === '\"') {\n var end = parseJSONString(json, ++i).end - 1;\n var string = slice(json, i, end);\n result += slice(string, 0, MARK_LENGTH) === MARK\n ? rawStrings[slice(string, MARK_LENGTH)]\n : '\"' + string + '\"';\n i = end;\n } else result += chr;\n }\n\n return result;\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar NATIVE_SYMBOL = require('../internals/symbol-constructor-detection');\nvar fails = require('../internals/fails');\nvar getOwnPropertySymbolsModule = require('../internals/object-get-own-property-symbols');\nvar toObject = require('../internals/to-object');\n\n// V8 ~ Chrome 38 and 39 `Object.getOwnPropertySymbols` fails on primitives\n// https://bugs.chromium.org/p/v8/issues/detail?id=3443\nvar FORCED = !NATIVE_SYMBOL || fails(function () { getOwnPropertySymbolsModule.f(1); });\n\n// `Object.getOwnPropertySymbols` method\n// https://tc39.es/ecma262/#sec-object.getownpropertysymbols\n$({ target: 'Object', stat: true, forced: FORCED }, {\n getOwnPropertySymbols: function getOwnPropertySymbols(it) {\n var $getOwnPropertySymbols = getOwnPropertySymbolsModule.f;\n return $getOwnPropertySymbols ? $getOwnPropertySymbols(toObject(it)) : [];\n }\n});\n", "'use strict';\n// TODO: Remove this module from `core-js@4` since it's split to modules listed below\nrequire('../modules/es.symbol.constructor');\nrequire('../modules/es.symbol.for');\nrequire('../modules/es.symbol.key-for');\nrequire('../modules/es.json.stringify');\nrequire('../modules/es.object.get-own-property-symbols');\n", "// `Symbol.prototype.description` getter\n// https://tc39.es/ecma262/#sec-symbol.prototype.description\n'use strict';\nvar $ = require('../internals/export');\nvar DESCRIPTORS = require('../internals/descriptors');\nvar globalThis = require('../internals/global-this');\nvar call = require('../internals/function-call');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar hasOwn = require('../internals/has-own-property');\nvar isCallable = require('../internals/is-callable');\nvar isPrototypeOf = require('../internals/object-is-prototype-of');\nvar toString = require('../internals/to-string');\nvar defineBuiltInAccessor = require('../internals/define-built-in-accessor');\nvar copyConstructorProperties = require('../internals/copy-constructor-properties');\n\nvar NativeSymbol = globalThis.Symbol;\nvar SymbolPrototype = NativeSymbol && NativeSymbol.prototype;\n\nif (DESCRIPTORS && isCallable(NativeSymbol) && (!('description' in SymbolPrototype) ||\n // Safari 12 bug\n NativeSymbol().description !== undefined\n)) {\n var EmptyStringDescriptionStore = {};\n // wrap Symbol constructor for correct work with undefined description\n var SymbolWrapper = function Symbol() {\n var description = arguments.length < 1 || arguments[0] === undefined ? undefined : toString(arguments[0]);\n var result = isPrototypeOf(SymbolPrototype, this)\n // eslint-disable-next-line sonarjs/inconsistent-function-call -- ok\n ? new NativeSymbol(description)\n // in Edge 13, String(Symbol(undefined)) === 'Symbol(undefined)'\n : description === undefined ? NativeSymbol() : NativeSymbol(description);\n if (description === '') EmptyStringDescriptionStore[result] = true;\n return result;\n };\n\n copyConstructorProperties(SymbolWrapper, NativeSymbol);\n // wrap Symbol.for for correct handling of empty string descriptions\n var nativeFor = SymbolWrapper['for'];\n SymbolWrapper['for'] = { 'for': function (key) {\n var stringKey = toString(key);\n var symbol = call(nativeFor, this, stringKey);\n if (stringKey === '') EmptyStringDescriptionStore[symbol] = true;\n return symbol;\n } }['for'];\n SymbolWrapper.prototype = SymbolPrototype;\n SymbolPrototype.constructor = SymbolWrapper;\n\n var NATIVE_SYMBOL = String(NativeSymbol('description detection')) === 'Symbol(description detection)';\n var thisSymbolValue = uncurryThis(SymbolPrototype.valueOf);\n var symbolDescriptiveString = uncurryThis(SymbolPrototype.toString);\n var regexp = /^Symbol\\((.*)\\)[^)]+$/;\n var replace = uncurryThis(''.replace);\n var stringSlice = uncurryThis(''.slice);\n\n defineBuiltInAccessor(SymbolPrototype, 'description', {\n configurable: true,\n get: function description() {\n var symbol = thisSymbolValue(this);\n if (hasOwn(EmptyStringDescriptionStore, symbol)) return '';\n var string = symbolDescriptiveString(symbol);\n var desc = NATIVE_SYMBOL ? stringSlice(string, 7, -1) : replace(string, regexp, '$1');\n return desc === '' ? undefined : desc;\n }\n });\n\n $({ global: true, constructor: true, forced: true }, {\n Symbol: SymbolWrapper\n });\n}\n", "'use strict';\nvar globalThis = require('../internals/global-this');\nvar defineWellKnownSymbol = require('../internals/well-known-symbol-define');\nvar defineProperty = require('../internals/object-define-property').f;\nvar getOwnPropertyDescriptor = require('../internals/object-get-own-property-descriptor').f;\n\nvar Symbol = globalThis.Symbol;\n\n// `Symbol.asyncDispose` well-known symbol\n// https://github.com/tc39/proposal-async-explicit-resource-management\ndefineWellKnownSymbol('asyncDispose');\n\nif (Symbol) {\n var descriptor = getOwnPropertyDescriptor(Symbol, 'asyncDispose');\n // workaround of NodeJS 20.4 bug\n // https://github.com/nodejs/node/issues/48699\n // and incorrect descriptor from some transpilers and userland helpers\n if (descriptor.enumerable && descriptor.configurable && descriptor.writable) {\n defineProperty(Symbol, 'asyncDispose', { value: descriptor.value, enumerable: false, configurable: false, writable: false });\n }\n}\n", "'use strict';\nvar defineWellKnownSymbol = require('../internals/well-known-symbol-define');\n\n// `Symbol.asyncIterator` well-known symbol\n// https://tc39.es/ecma262/#sec-symbol.asynciterator\ndefineWellKnownSymbol('asyncIterator');\n", "'use strict';\nvar globalThis = require('../internals/global-this');\nvar defineWellKnownSymbol = require('../internals/well-known-symbol-define');\nvar defineProperty = require('../internals/object-define-property').f;\nvar getOwnPropertyDescriptor = require('../internals/object-get-own-property-descriptor').f;\n\nvar Symbol = globalThis.Symbol;\n\n// `Symbol.dispose` well-known symbol\n// https://github.com/tc39/proposal-explicit-resource-management\ndefineWellKnownSymbol('dispose');\n\nif (Symbol) {\n var descriptor = getOwnPropertyDescriptor(Symbol, 'dispose');\n // workaround of NodeJS 20.4 bug\n // https://github.com/nodejs/node/issues/48699\n // and incorrect descriptor from some transpilers and userland helpers\n if (descriptor.enumerable && descriptor.configurable && descriptor.writable) {\n defineProperty(Symbol, 'dispose', { value: descriptor.value, enumerable: false, configurable: false, writable: false });\n }\n}\n", "'use strict';\nvar defineWellKnownSymbol = require('../internals/well-known-symbol-define');\n\n// `Symbol.hasInstance` well-known symbol\n// https://tc39.es/ecma262/#sec-symbol.hasinstance\ndefineWellKnownSymbol('hasInstance');\n", "'use strict';\nvar defineWellKnownSymbol = require('../internals/well-known-symbol-define');\n\n// `Symbol.isConcatSpreadable` well-known symbol\n// https://tc39.es/ecma262/#sec-symbol.isconcatspreadable\ndefineWellKnownSymbol('isConcatSpreadable');\n", "'use strict';\nvar defineWellKnownSymbol = require('../internals/well-known-symbol-define');\n\n// `Symbol.iterator` well-known symbol\n// https://tc39.es/ecma262/#sec-symbol.iterator\ndefineWellKnownSymbol('iterator');\n", "'use strict';\nvar defineWellKnownSymbol = require('../internals/well-known-symbol-define');\n\n// `Symbol.match` well-known symbol\n// https://tc39.es/ecma262/#sec-symbol.match\ndefineWellKnownSymbol('match');\n", "'use strict';\nvar defineWellKnownSymbol = require('../internals/well-known-symbol-define');\n\n// `Symbol.matchAll` well-known symbol\n// https://tc39.es/ecma262/#sec-symbol.matchall\ndefineWellKnownSymbol('matchAll');\n", "'use strict';\nvar defineWellKnownSymbol = require('../internals/well-known-symbol-define');\n\n// `Symbol.replace` well-known symbol\n// https://tc39.es/ecma262/#sec-symbol.replace\ndefineWellKnownSymbol('replace');\n", "'use strict';\nvar defineWellKnownSymbol = require('../internals/well-known-symbol-define');\n\n// `Symbol.search` well-known symbol\n// https://tc39.es/ecma262/#sec-symbol.search\ndefineWellKnownSymbol('search');\n", "'use strict';\nvar defineWellKnownSymbol = require('../internals/well-known-symbol-define');\n\n// `Symbol.species` well-known symbol\n// https://tc39.es/ecma262/#sec-symbol.species\ndefineWellKnownSymbol('species');\n", "'use strict';\nvar defineWellKnownSymbol = require('../internals/well-known-symbol-define');\n\n// `Symbol.split` well-known symbol\n// https://tc39.es/ecma262/#sec-symbol.split\ndefineWellKnownSymbol('split');\n", "'use strict';\nvar defineWellKnownSymbol = require('../internals/well-known-symbol-define');\nvar defineSymbolToPrimitive = require('../internals/symbol-define-to-primitive');\n\n// `Symbol.toPrimitive` well-known symbol\n// https://tc39.es/ecma262/#sec-symbol.toprimitive\ndefineWellKnownSymbol('toPrimitive');\n\n// `Symbol.prototype[@@toPrimitive]` method\n// https://tc39.es/ecma262/#sec-symbol.prototype-@@toprimitive\ndefineSymbolToPrimitive();\n", "'use strict';\nvar getBuiltIn = require('../internals/get-built-in');\nvar defineWellKnownSymbol = require('../internals/well-known-symbol-define');\nvar setToStringTag = require('../internals/set-to-string-tag');\n\n// `Symbol.toStringTag` well-known symbol\n// https://tc39.es/ecma262/#sec-symbol.tostringtag\ndefineWellKnownSymbol('toStringTag');\n\n// `Symbol.prototype[@@toStringTag]` property\n// https://tc39.es/ecma262/#sec-symbol.prototype-@@tostringtag\nsetToStringTag(getBuiltIn('Symbol'), 'Symbol');\n", "'use strict';\nvar defineWellKnownSymbol = require('../internals/well-known-symbol-define');\n\n// `Symbol.unscopables` well-known symbol\n// https://tc39.es/ecma262/#sec-symbol.unscopables\ndefineWellKnownSymbol('unscopables');\n", "'use strict';\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar aCallable = require('../internals/a-callable');\n\nmodule.exports = function (object, key, method) {\n try {\n // eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe\n return uncurryThis(aCallable(Object.getOwnPropertyDescriptor(object, key)[method]));\n } catch (error) { /* empty */ }\n};\n", "'use strict';\nvar isObject = require('../internals/is-object');\n\nmodule.exports = function (argument) {\n return isObject(argument) || argument === null;\n};\n", "'use strict';\nvar isPossiblePrototype = require('../internals/is-possible-prototype');\n\nvar $String = String;\nvar $TypeError = TypeError;\n\nmodule.exports = function (argument) {\n if (isPossiblePrototype(argument)) return argument;\n throw new $TypeError(\"Can't set \" + $String(argument) + ' as a prototype');\n};\n", "'use strict';\n/* eslint-disable no-proto -- safe */\nvar uncurryThisAccessor = require('../internals/function-uncurry-this-accessor');\nvar isObject = require('../internals/is-object');\nvar requireObjectCoercible = require('../internals/require-object-coercible');\nvar aPossiblePrototype = require('../internals/a-possible-prototype');\n\n// `Object.setPrototypeOf` method\n// https://tc39.es/ecma262/#sec-object.setprototypeof\n// Works with __proto__ only. Old v8 can't work with null proto objects.\n// eslint-disable-next-line es/no-object-setprototypeof -- safe\nmodule.exports = Object.setPrototypeOf || ('__proto__' in {} ? function () {\n var CORRECT_SETTER = false;\n var test = {};\n var setter;\n try {\n setter = uncurryThisAccessor(Object.prototype, '__proto__', 'set');\n setter(test, []);\n CORRECT_SETTER = test instanceof Array;\n } catch (error) { /* empty */ }\n return function setPrototypeOf(O, proto) {\n requireObjectCoercible(O);\n aPossiblePrototype(proto);\n if (!isObject(O)) return O;\n if (CORRECT_SETTER) setter(O, proto);\n else O.__proto__ = proto;\n return O;\n };\n}() : undefined);\n", "'use strict';\nvar defineProperty = require('../internals/object-define-property').f;\n\nmodule.exports = function (Target, Source, key) {\n key in Target || defineProperty(Target, key, {\n configurable: true,\n get: function () { return Source[key]; },\n set: function (it) { Source[key] = it; }\n });\n};\n", "'use strict';\nvar isCallable = require('../internals/is-callable');\nvar isObject = require('../internals/is-object');\nvar setPrototypeOf = require('../internals/object-set-prototype-of');\n\n// makes subclassing work correct for wrapped built-ins\nmodule.exports = function ($this, dummy, Wrapper) {\n var NewTarget, NewTargetPrototype;\n if (\n // it can work only with native `setPrototypeOf`\n setPrototypeOf &&\n // we haven't completely correct pre-ES6 way for getting `new.target`, so use this\n isCallable(NewTarget = dummy.constructor) &&\n NewTarget !== Wrapper &&\n isObject(NewTargetPrototype = NewTarget.prototype) &&\n NewTargetPrototype !== Wrapper.prototype\n ) setPrototypeOf($this, NewTargetPrototype);\n return $this;\n};\n", "'use strict';\nvar toString = require('../internals/to-string');\n\nmodule.exports = function (argument, $default) {\n return argument === undefined ? arguments.length < 2 ? '' : $default : toString(argument);\n};\n", "'use strict';\nvar isObject = require('../internals/is-object');\nvar createNonEnumerableProperty = require('../internals/create-non-enumerable-property');\n\n// `InstallErrorCause` abstract operation\n// https://tc39.es/ecma262/#sec-installerrorcause\nmodule.exports = function (O, options) {\n if (isObject(options) && 'cause' in options) {\n createNonEnumerableProperty(O, 'cause', options.cause);\n }\n};\n", "'use strict';\nvar uncurryThis = require('../internals/function-uncurry-this');\n\nvar $Error = Error;\nvar replace = uncurryThis(''.replace);\n\nvar TEST = (function (arg) { return String(new $Error(arg).stack); })('zxcasd');\n// eslint-disable-next-line redos/no-vulnerable, sonarjs/slow-regex -- safe\nvar V8_OR_CHAKRA_STACK_ENTRY = /\\n\\s*at [^:]*:[^\\n]*/;\nvar IS_V8_OR_CHAKRA_STACK = V8_OR_CHAKRA_STACK_ENTRY.test(TEST);\n\nmodule.exports = function (stack, dropEntries) {\n if (IS_V8_OR_CHAKRA_STACK && typeof stack == 'string' && !$Error.prepareStackTrace) {\n while (dropEntries--) stack = replace(stack, V8_OR_CHAKRA_STACK_ENTRY, '');\n } return stack;\n};\n", "'use strict';\nvar fails = require('../internals/fails');\nvar createPropertyDescriptor = require('../internals/create-property-descriptor');\n\nmodule.exports = !fails(function () {\n var error = new Error('a');\n if (!('stack' in error)) return true;\n // eslint-disable-next-line es/no-object-defineproperty -- safe\n Object.defineProperty(error, 'stack', createPropertyDescriptor(1, 7));\n return error.stack !== 7;\n});\n", "'use strict';\nvar createNonEnumerableProperty = require('../internals/create-non-enumerable-property');\nvar clearErrorStack = require('../internals/error-stack-clear');\nvar ERROR_STACK_INSTALLABLE = require('../internals/error-stack-installable');\n\n// non-standard V8\n// eslint-disable-next-line es/no-nonstandard-error-properties -- safe\nvar captureStackTrace = Error.captureStackTrace;\n\nmodule.exports = function (error, C, stack, dropEntries) {\n if (ERROR_STACK_INSTALLABLE) {\n if (captureStackTrace) captureStackTrace(error, C);\n else createNonEnumerableProperty(error, 'stack', clearErrorStack(stack, dropEntries));\n }\n};\n", "'use strict';\nvar getBuiltIn = require('../internals/get-built-in');\nvar hasOwn = require('../internals/has-own-property');\nvar createNonEnumerableProperty = require('../internals/create-non-enumerable-property');\nvar isPrototypeOf = require('../internals/object-is-prototype-of');\nvar setPrototypeOf = require('../internals/object-set-prototype-of');\nvar copyConstructorProperties = require('../internals/copy-constructor-properties');\nvar proxyAccessor = require('../internals/proxy-accessor');\nvar inheritIfRequired = require('../internals/inherit-if-required');\nvar normalizeStringArgument = require('../internals/normalize-string-argument');\nvar installErrorCause = require('../internals/install-error-cause');\nvar installErrorStack = require('../internals/error-stack-install');\nvar DESCRIPTORS = require('../internals/descriptors');\nvar IS_PURE = require('../internals/is-pure');\n\nmodule.exports = function (FULL_NAME, wrapper, FORCED, IS_AGGREGATE_ERROR) {\n var STACK_TRACE_LIMIT = 'stackTraceLimit';\n var OPTIONS_POSITION = IS_AGGREGATE_ERROR ? 2 : 1;\n var path = FULL_NAME.split('.');\n var ERROR_NAME = path[path.length - 1];\n var OriginalError = getBuiltIn.apply(null, path);\n\n if (!OriginalError) return;\n\n var OriginalErrorPrototype = OriginalError.prototype;\n\n // V8 9.3- bug https://bugs.chromium.org/p/v8/issues/detail?id=12006\n if (!IS_PURE && hasOwn(OriginalErrorPrototype, 'cause')) delete OriginalErrorPrototype.cause;\n\n if (!FORCED) return OriginalError;\n\n var BaseError = getBuiltIn('Error');\n\n var WrappedError = wrapper(function (a, b) {\n var message = normalizeStringArgument(IS_AGGREGATE_ERROR ? b : a, undefined);\n var result = IS_AGGREGATE_ERROR ? new OriginalError(a) : new OriginalError();\n if (message !== undefined) createNonEnumerableProperty(result, 'message', message);\n installErrorStack(result, WrappedError, result.stack, 2);\n if (this && isPrototypeOf(OriginalErrorPrototype, this)) inheritIfRequired(result, this, WrappedError);\n if (arguments.length > OPTIONS_POSITION) installErrorCause(result, arguments[OPTIONS_POSITION]);\n return result;\n });\n\n WrappedError.prototype = OriginalErrorPrototype;\n\n if (ERROR_NAME !== 'Error') {\n if (setPrototypeOf) setPrototypeOf(WrappedError, BaseError);\n else copyConstructorProperties(WrappedError, BaseError, { name: true });\n } else if (DESCRIPTORS && STACK_TRACE_LIMIT in OriginalError) {\n proxyAccessor(WrappedError, OriginalError, STACK_TRACE_LIMIT);\n proxyAccessor(WrappedError, OriginalError, 'prepareStackTrace');\n }\n\n copyConstructorProperties(WrappedError, OriginalError);\n\n if (!IS_PURE) try {\n // Safari 13- bug: WebAssembly errors does not have a proper `.name`\n if (OriginalErrorPrototype.name !== ERROR_NAME) {\n createNonEnumerableProperty(OriginalErrorPrototype, 'name', ERROR_NAME);\n }\n OriginalErrorPrototype.constructor = WrappedError;\n } catch (error) { /* empty */ }\n\n return WrappedError;\n};\n", "'use strict';\n/* eslint-disable no-unused-vars -- required for functions `.length` */\nvar $ = require('../internals/export');\nvar globalThis = require('../internals/global-this');\nvar apply = require('../internals/function-apply');\nvar wrapErrorConstructorWithCause = require('../internals/wrap-error-constructor-with-cause');\n\nvar WEB_ASSEMBLY = 'WebAssembly';\nvar WebAssembly = globalThis[WEB_ASSEMBLY];\n\n// eslint-disable-next-line es/no-error-cause -- feature detection\nvar FORCED = new Error('e', { cause: 7 }).cause !== 7;\n\nvar exportGlobalErrorCauseWrapper = function (ERROR_NAME, wrapper) {\n var O = {};\n // eslint-disable-next-line unicorn/no-immediate-mutation -- ES3 syntax limitation\n O[ERROR_NAME] = wrapErrorConstructorWithCause(ERROR_NAME, wrapper, FORCED);\n $({ global: true, constructor: true, arity: 1, forced: FORCED }, O);\n};\n\nvar exportWebAssemblyErrorCauseWrapper = function (ERROR_NAME, wrapper) {\n if (WebAssembly && WebAssembly[ERROR_NAME]) {\n var O = {};\n // eslint-disable-next-line unicorn/no-immediate-mutation -- ES3 syntax limitation\n O[ERROR_NAME] = wrapErrorConstructorWithCause(WEB_ASSEMBLY + '.' + ERROR_NAME, wrapper, FORCED);\n $({ target: WEB_ASSEMBLY, stat: true, constructor: true, arity: 1, forced: FORCED }, O);\n }\n};\n\n// https://tc39.es/ecma262/#sec-nativeerror\nexportGlobalErrorCauseWrapper('Error', function (init) {\n return function Error(message) { return apply(init, this, arguments); };\n});\nexportGlobalErrorCauseWrapper('EvalError', function (init) {\n return function EvalError(message) { return apply(init, this, arguments); };\n});\nexportGlobalErrorCauseWrapper('RangeError', function (init) {\n return function RangeError(message) { return apply(init, this, arguments); };\n});\nexportGlobalErrorCauseWrapper('ReferenceError', function (init) {\n return function ReferenceError(message) { return apply(init, this, arguments); };\n});\nexportGlobalErrorCauseWrapper('SyntaxError', function (init) {\n return function SyntaxError(message) { return apply(init, this, arguments); };\n});\nexportGlobalErrorCauseWrapper('TypeError', function (init) {\n return function TypeError(message) { return apply(init, this, arguments); };\n});\nexportGlobalErrorCauseWrapper('URIError', function (init) {\n return function URIError(message) { return apply(init, this, arguments); };\n});\nexportWebAssemblyErrorCauseWrapper('CompileError', function (init) {\n return function CompileError(message) { return apply(init, this, arguments); };\n});\nexportWebAssemblyErrorCauseWrapper('LinkError', function (init) {\n return function LinkError(message) { return apply(init, this, arguments); };\n});\nexportWebAssemblyErrorCauseWrapper('RuntimeError', function (init) {\n return function RuntimeError(message) { return apply(init, this, arguments); };\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar getBuiltIn = require('../internals/get-built-in');\nvar isObject = require('../internals/is-object');\nvar classof = require('../internals/classof');\nvar fails = require('../internals/fails');\n\nvar ERROR = 'Error';\nvar DOM_EXCEPTION = 'DOMException';\n// eslint-disable-next-line es/no-object-setprototypeof, no-proto -- safe\nvar PROTOTYPE_SETTING_AVAILABLE = Object.setPrototypeOf || {}.__proto__;\n\nvar DOMException = getBuiltIn(DOM_EXCEPTION);\nvar $Error = Error;\n// eslint-disable-next-line es/no-error-iserror -- safe\nvar $isError = $Error.isError;\n\nvar FORCED = !$isError || !PROTOTYPE_SETTING_AVAILABLE || fails(function () {\n // Bun, isNativeError-based implementations, some buggy structuredClone-based implementations, etc.\n // https://github.com/oven-sh/bun/issues/15821\n return (DOMException && !$isError(new DOMException(DOM_EXCEPTION))) ||\n // structuredClone-based implementations\n // eslint-disable-next-line es/no-error-cause -- detection\n !$isError(new $Error(ERROR, { cause: function () { /* empty */ } })) ||\n // instanceof-based and FF Error#stack-based implementations\n $isError(getBuiltIn('Object', 'create')($Error.prototype));\n});\n\n// `Error.isError` method\n// https://tc39.es/ecma262/#sec-error.iserror\n$({ target: 'Error', stat: true, sham: true, forced: FORCED }, {\n isError: function isError(arg) {\n if (!isObject(arg)) return false;\n var tag = classof(arg);\n return tag === ERROR || tag === DOM_EXCEPTION;\n }\n});\n", "'use strict';\nvar DESCRIPTORS = require('../internals/descriptors');\nvar fails = require('../internals/fails');\nvar anObject = require('../internals/an-object');\nvar normalizeStringArgument = require('../internals/normalize-string-argument');\n\nvar nativeErrorToString = Error.prototype.toString;\n\nvar INCORRECT_TO_STRING = fails(function () {\n if (DESCRIPTORS) {\n // Chrome 32- incorrectly call accessor\n // eslint-disable-next-line es/no-object-create, es/no-object-defineproperty -- safe\n var object = Object.create(Object.defineProperty({}, 'name', { get: function () {\n return this === object;\n } }));\n if (nativeErrorToString.call(object) !== 'true') return true;\n }\n // FF10- does not properly handle non-strings\n return nativeErrorToString.call({ message: 1, name: 2 }) !== '2: 1'\n // IE8 does not properly handle defaults\n || nativeErrorToString.call({}) !== 'Error';\n});\n\nmodule.exports = INCORRECT_TO_STRING ? function toString() {\n var O = anObject(this);\n var name = normalizeStringArgument(O.name, 'Error');\n var message = normalizeStringArgument(O.message);\n return !name ? message : !message ? name : name + ': ' + message;\n} : nativeErrorToString;\n", "'use strict';\nvar defineBuiltIn = require('../internals/define-built-in');\nvar errorToString = require('../internals/error-to-string');\n\nvar ErrorPrototype = Error.prototype;\n\n// `Error.prototype.toString` method fix\n// https://tc39.es/ecma262/#sec-error.prototype.tostring\nif (ErrorPrototype.toString !== errorToString) {\n defineBuiltIn(ErrorPrototype, 'toString', errorToString);\n}\n", "'use strict';\nvar fails = require('../internals/fails');\n\nmodule.exports = !fails(function () {\n function F() { /* empty */ }\n F.prototype.constructor = null;\n // eslint-disable-next-line es/no-object-getprototypeof -- required for testing\n return Object.getPrototypeOf(new F()) !== F.prototype;\n});\n", "'use strict';\nvar hasOwn = require('../internals/has-own-property');\nvar isCallable = require('../internals/is-callable');\nvar toObject = require('../internals/to-object');\nvar sharedKey = require('../internals/shared-key');\nvar CORRECT_PROTOTYPE_GETTER = require('../internals/correct-prototype-getter');\n\nvar IE_PROTO = sharedKey('IE_PROTO');\nvar $Object = Object;\nvar ObjectPrototype = $Object.prototype;\n\n// `Object.getPrototypeOf` method\n// https://tc39.es/ecma262/#sec-object.getprototypeof\n// eslint-disable-next-line es/no-object-getprototypeof -- safe\nmodule.exports = CORRECT_PROTOTYPE_GETTER ? $Object.getPrototypeOf : function (O) {\n var object = toObject(O);\n if (hasOwn(object, IE_PROTO)) return object[IE_PROTO];\n var constructor = object.constructor;\n if (isCallable(constructor) && object instanceof constructor) {\n return constructor.prototype;\n } return object instanceof $Object ? ObjectPrototype : null;\n};\n", "'use strict';\nmodule.exports = {};\n", "'use strict';\nvar wellKnownSymbol = require('../internals/well-known-symbol');\nvar Iterators = require('../internals/iterators');\n\nvar ITERATOR = wellKnownSymbol('iterator');\nvar ArrayPrototype = Array.prototype;\n\n// check on default Array iterator\nmodule.exports = function (it) {\n return it !== undefined && (Iterators.Array === it || ArrayPrototype[ITERATOR] === it);\n};\n", "'use strict';\nvar classof = require('../internals/classof');\nvar getMethod = require('../internals/get-method');\nvar isNullOrUndefined = require('../internals/is-null-or-undefined');\nvar Iterators = require('../internals/iterators');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\n\nvar ITERATOR = wellKnownSymbol('iterator');\n\nmodule.exports = function (it) {\n if (!isNullOrUndefined(it)) return getMethod(it, ITERATOR)\n || getMethod(it, '@@iterator')\n || Iterators[classof(it)];\n};\n", "'use strict';\nvar call = require('../internals/function-call');\nvar aCallable = require('../internals/a-callable');\nvar anObject = require('../internals/an-object');\nvar tryToString = require('../internals/try-to-string');\nvar getIteratorMethod = require('../internals/get-iterator-method');\n\nvar $TypeError = TypeError;\n\nmodule.exports = function (argument, usingIterator) {\n var iteratorMethod = arguments.length < 2 ? getIteratorMethod(argument) : usingIterator;\n if (aCallable(iteratorMethod)) return anObject(call(iteratorMethod, argument));\n throw new $TypeError(tryToString(argument) + ' is not iterable');\n};\n", "'use strict';\nvar call = require('../internals/function-call');\nvar anObject = require('../internals/an-object');\nvar getMethod = require('../internals/get-method');\n\nmodule.exports = function (iterator, kind, value) {\n var innerResult, innerError;\n anObject(iterator);\n try {\n innerResult = getMethod(iterator, 'return');\n if (!innerResult) {\n if (kind === 'throw') throw value;\n return value;\n }\n innerResult = call(innerResult, iterator);\n } catch (error) {\n innerError = true;\n innerResult = error;\n }\n if (kind === 'throw') throw value;\n if (innerError) throw innerResult;\n anObject(innerResult);\n return value;\n};\n", "'use strict';\nvar bind = require('../internals/function-bind-context');\nvar call = require('../internals/function-call');\nvar anObject = require('../internals/an-object');\nvar tryToString = require('../internals/try-to-string');\nvar isArrayIteratorMethod = require('../internals/is-array-iterator-method');\nvar lengthOfArrayLike = require('../internals/length-of-array-like');\nvar isPrototypeOf = require('../internals/object-is-prototype-of');\nvar getIterator = require('../internals/get-iterator');\nvar getIteratorMethod = require('../internals/get-iterator-method');\nvar iteratorClose = require('../internals/iterator-close');\n\nvar $TypeError = TypeError;\n\nvar Result = function (stopped, result) {\n this.stopped = stopped;\n this.result = result;\n};\n\nvar ResultPrototype = Result.prototype;\n\nmodule.exports = function (iterable, unboundFunction, options) {\n var that = options && options.that;\n var AS_ENTRIES = !!(options && options.AS_ENTRIES);\n var IS_RECORD = !!(options && options.IS_RECORD);\n var IS_ITERATOR = !!(options && options.IS_ITERATOR);\n var INTERRUPTED = !!(options && options.INTERRUPTED);\n var fn = bind(unboundFunction, that);\n var iterator, iterFn, index, length, result, next, step;\n\n var stop = function (condition) {\n var $iterator = iterator;\n iterator = undefined;\n if ($iterator) iteratorClose($iterator, 'normal');\n return new Result(true, condition);\n };\n\n var callFn = function (value) {\n if (AS_ENTRIES) {\n anObject(value);\n return INTERRUPTED ? fn(value[0], value[1], stop) : fn(value[0], value[1]);\n } return INTERRUPTED ? fn(value, stop) : fn(value);\n };\n\n if (IS_RECORD) {\n iterator = iterable.iterator;\n } else if (IS_ITERATOR) {\n iterator = iterable;\n } else {\n iterFn = getIteratorMethod(iterable);\n if (!iterFn) throw new $TypeError(tryToString(iterable) + ' is not iterable');\n // optimisation for array iterators\n if (isArrayIteratorMethod(iterFn)) {\n for (index = 0, length = lengthOfArrayLike(iterable); length > index; index++) {\n result = callFn(iterable[index]);\n if (result && isPrototypeOf(ResultPrototype, result)) return result;\n } return new Result(false);\n }\n iterator = getIterator(iterable, iterFn);\n }\n\n next = IS_RECORD ? iterable.next : iterator.next;\n while (!(step = call(next, iterator)).done) {\n // `IteratorValue` errors should propagate without closing the iterator\n var value = step.value;\n try {\n result = callFn(value);\n } catch (error) {\n if (iterator) iteratorClose(iterator, 'throw', error);\n else throw error;\n }\n if (typeof result == 'object' && result && isPrototypeOf(ResultPrototype, result)) return result;\n } return new Result(false);\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar isPrototypeOf = require('../internals/object-is-prototype-of');\nvar getPrototypeOf = require('../internals/object-get-prototype-of');\nvar setPrototypeOf = require('../internals/object-set-prototype-of');\nvar copyConstructorProperties = require('../internals/copy-constructor-properties');\nvar create = require('../internals/object-create');\nvar createNonEnumerableProperty = require('../internals/create-non-enumerable-property');\nvar createPropertyDescriptor = require('../internals/create-property-descriptor');\nvar installErrorCause = require('../internals/install-error-cause');\nvar installErrorStack = require('../internals/error-stack-install');\nvar iterate = require('../internals/iterate');\nvar normalizeStringArgument = require('../internals/normalize-string-argument');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\n\nvar TO_STRING_TAG = wellKnownSymbol('toStringTag');\nvar $Error = Error;\nvar push = [].push;\n\nvar $AggregateError = function AggregateError(errors, message /* , options */) {\n var isInstance = isPrototypeOf(AggregateErrorPrototype, this);\n var that;\n if (setPrototypeOf) {\n that = setPrototypeOf(new $Error(), isInstance ? getPrototypeOf(this) : AggregateErrorPrototype);\n } else {\n that = isInstance ? this : create(AggregateErrorPrototype);\n createNonEnumerableProperty(that, TO_STRING_TAG, 'Error');\n }\n if (message !== undefined) createNonEnumerableProperty(that, 'message', normalizeStringArgument(message));\n installErrorStack(that, $AggregateError, that.stack, 1);\n if (arguments.length > 2) installErrorCause(that, arguments[2]);\n var errorsArray = [];\n iterate(errors, push, { that: errorsArray });\n createNonEnumerableProperty(that, 'errors', errorsArray);\n return that;\n};\n\nif (setPrototypeOf) setPrototypeOf($AggregateError, $Error);\nelse copyConstructorProperties($AggregateError, $Error, { name: true });\n\nvar AggregateErrorPrototype = $AggregateError.prototype = create($Error.prototype, {\n constructor: createPropertyDescriptor(1, $AggregateError),\n message: createPropertyDescriptor(1, ''),\n name: createPropertyDescriptor(1, 'AggregateError')\n});\n\n// `AggregateError` constructor\n// https://tc39.es/ecma262/#sec-aggregate-error-constructor\n$({ global: true, constructor: true, arity: 2 }, {\n AggregateError: $AggregateError\n});\n", "'use strict';\n// TODO: Remove this module from `core-js@4` since it's replaced to module below\nrequire('../modules/es.aggregate-error.constructor');\n", "'use strict';\nvar $ = require('../internals/export');\nvar getBuiltIn = require('../internals/get-built-in');\nvar apply = require('../internals/function-apply');\nvar fails = require('../internals/fails');\nvar wrapErrorConstructorWithCause = require('../internals/wrap-error-constructor-with-cause');\n\nvar AGGREGATE_ERROR = 'AggregateError';\nvar $AggregateError = getBuiltIn(AGGREGATE_ERROR);\n\nvar FORCED = !fails(function () {\n return $AggregateError([1]).errors[0] !== 1;\n}) && fails(function () {\n return $AggregateError([1], AGGREGATE_ERROR, { cause: 7 }).cause !== 7;\n});\n\n// https://tc39.es/ecma262/#sec-aggregate-error\n$({ global: true, constructor: true, arity: 2, forced: FORCED }, {\n AggregateError: wrapErrorConstructorWithCause(AGGREGATE_ERROR, function (init) {\n // eslint-disable-next-line no-unused-vars -- required for functions `.length`\n return function AggregateError(errors, message) { return apply(init, this, arguments); };\n }, FORCED, true)\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar globalThis = require('../internals/global-this');\nvar isPrototypeOf = require('../internals/object-is-prototype-of');\nvar getPrototypeOf = require('../internals/object-get-prototype-of');\nvar setPrototypeOf = require('../internals/object-set-prototype-of');\nvar copyConstructorProperties = require('../internals/copy-constructor-properties');\nvar create = require('../internals/object-create');\nvar createNonEnumerableProperty = require('../internals/create-non-enumerable-property');\nvar createPropertyDescriptor = require('../internals/create-property-descriptor');\nvar installErrorStack = require('../internals/error-stack-install');\nvar normalizeStringArgument = require('../internals/normalize-string-argument');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\nvar fails = require('../internals/fails');\nvar IS_PURE = require('../internals/is-pure');\n\nvar NativeSuppressedError = globalThis.SuppressedError;\nvar TO_STRING_TAG = wellKnownSymbol('toStringTag');\nvar $Error = Error;\n\n// https://github.com/oven-sh/bun/issues/9282\nvar WRONG_ARITY = !!NativeSuppressedError && NativeSuppressedError.length !== 3;\n\n// https://github.com/oven-sh/bun/issues/9283\nvar EXTRA_ARGS_SUPPORT = !!NativeSuppressedError && fails(function () {\n return new NativeSuppressedError(1, 2, 3, { cause: 4 }).cause === 4;\n});\n\nvar PATCH = WRONG_ARITY || EXTRA_ARGS_SUPPORT;\n\nvar $SuppressedError = function SuppressedError(error, suppressed, message) {\n var isInstance = isPrototypeOf(SuppressedErrorPrototype, this);\n var that;\n if (setPrototypeOf) {\n that = PATCH && (!isInstance || getPrototypeOf(this) === SuppressedErrorPrototype)\n ? new NativeSuppressedError()\n : setPrototypeOf(new $Error(), isInstance ? getPrototypeOf(this) : SuppressedErrorPrototype);\n } else {\n that = isInstance ? this : create(SuppressedErrorPrototype);\n createNonEnumerableProperty(that, TO_STRING_TAG, 'Error');\n }\n if (message !== undefined) createNonEnumerableProperty(that, 'message', normalizeStringArgument(message));\n installErrorStack(that, $SuppressedError, that.stack, 1);\n createNonEnumerableProperty(that, 'error', error);\n createNonEnumerableProperty(that, 'suppressed', suppressed);\n return that;\n};\n\nif (setPrototypeOf) setPrototypeOf($SuppressedError, $Error);\nelse copyConstructorProperties($SuppressedError, $Error, { name: true });\n\nvar SuppressedErrorPrototype = $SuppressedError.prototype = PATCH ? NativeSuppressedError.prototype : create($Error.prototype, {\n constructor: createPropertyDescriptor(1, $SuppressedError),\n message: createPropertyDescriptor(1, ''),\n name: createPropertyDescriptor(1, 'SuppressedError')\n});\n\nif (PATCH && !IS_PURE) SuppressedErrorPrototype.constructor = $SuppressedError;\n\n// `SuppressedError` constructor\n// https://github.com/tc39/proposal-explicit-resource-management\n$({ global: true, constructor: true, arity: 3, forced: PATCH }, {\n SuppressedError: $SuppressedError\n});\n", "'use strict';\nvar wellKnownSymbol = require('../internals/well-known-symbol');\nvar create = require('../internals/object-create');\nvar defineProperty = require('../internals/object-define-property').f;\n\nvar UNSCOPABLES = wellKnownSymbol('unscopables');\nvar ArrayPrototype = Array.prototype;\n\n// Array.prototype[@@unscopables]\n// https://tc39.es/ecma262/#sec-array.prototype-@@unscopables\nif (ArrayPrototype[UNSCOPABLES] === undefined) {\n defineProperty(ArrayPrototype, UNSCOPABLES, {\n configurable: true,\n value: create(null)\n });\n}\n\n// add a key to Array.prototype[@@unscopables]\nmodule.exports = function (key) {\n ArrayPrototype[UNSCOPABLES][key] = true;\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar toObject = require('../internals/to-object');\nvar lengthOfArrayLike = require('../internals/length-of-array-like');\nvar toIntegerOrInfinity = require('../internals/to-integer-or-infinity');\nvar addToUnscopables = require('../internals/add-to-unscopables');\n\n// `Array.prototype.at` method\n// https://tc39.es/ecma262/#sec-array.prototype.at\n$({ target: 'Array', proto: true }, {\n at: function at(index) {\n var O = toObject(this);\n var len = lengthOfArrayLike(O);\n var relativeIndex = toIntegerOrInfinity(index);\n var k = relativeIndex >= 0 ? relativeIndex : len + relativeIndex;\n return (k < 0 || k >= len) ? undefined : O[k];\n }\n});\n\naddToUnscopables('at');\n", "'use strict';\nvar $TypeError = TypeError;\nvar MAX_SAFE_INTEGER = 0x1FFFFFFFFFFFFF; // 2 ** 53 - 1 == 9007199254740991\n\nmodule.exports = function (it) {\n if (it > MAX_SAFE_INTEGER) throw new $TypeError('Maximum allowed index exceeded');\n return it;\n};\n", "'use strict';\nvar DESCRIPTORS = require('../internals/descriptors');\nvar isArray = require('../internals/is-array');\n\nvar $TypeError = TypeError;\n// eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe\nvar getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;\n\n// Safari < 13 does not throw an error in this case\nvar SILENT_ON_NON_WRITABLE_LENGTH_SET = DESCRIPTORS && !function () {\n // makes no sense without proper strict mode support\n if (this !== undefined) return true;\n try {\n // eslint-disable-next-line es/no-object-defineproperty -- safe\n Object.defineProperty([], 'length', { writable: false }).length = 1;\n } catch (error) {\n return error instanceof TypeError;\n }\n}();\n\nmodule.exports = SILENT_ON_NON_WRITABLE_LENGTH_SET ? function (O, length) {\n if (isArray(O) && !getOwnPropertyDescriptor(O, 'length').writable) {\n throw new $TypeError('Cannot set read only .length');\n } return O.length = length;\n} : function (O, length) {\n return O.length = length;\n};\n", "'use strict';\nvar fails = require('../internals/fails');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\nvar V8_VERSION = require('../internals/environment-v8-version');\n\nvar SPECIES = wellKnownSymbol('species');\n\nmodule.exports = function (METHOD_NAME) {\n // We can't use this feature detection in V8 since it causes\n // deoptimization and serious performance degradation\n // https://github.com/zloirock/core-js/issues/677\n return V8_VERSION >= 51 || !fails(function () {\n var array = [];\n var constructor = array.constructor = {};\n constructor[SPECIES] = function () {\n return { foo: 1 };\n };\n return array[METHOD_NAME](Boolean).foo !== 1;\n });\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar fails = require('../internals/fails');\nvar isArray = require('../internals/is-array');\nvar isObject = require('../internals/is-object');\nvar toObject = require('../internals/to-object');\nvar lengthOfArrayLike = require('../internals/length-of-array-like');\nvar doesNotExceedSafeInteger = require('../internals/does-not-exceed-safe-integer');\nvar createProperty = require('../internals/create-property');\nvar setArrayLength = require('../internals/array-set-length');\nvar arraySpeciesCreate = require('../internals/array-species-create');\nvar arrayMethodHasSpeciesSupport = require('../internals/array-method-has-species-support');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\nvar V8_VERSION = require('../internals/environment-v8-version');\n\nvar IS_CONCAT_SPREADABLE = wellKnownSymbol('isConcatSpreadable');\n\n// We can't use this feature detection in V8 since it causes\n// deoptimization and serious performance degradation\n// https://github.com/zloirock/core-js/issues/679\nvar IS_CONCAT_SPREADABLE_SUPPORT = V8_VERSION >= 51 || !fails(function () {\n var array = [];\n array[IS_CONCAT_SPREADABLE] = false;\n return array.concat()[0] !== array;\n});\n\nvar isConcatSpreadable = function (O) {\n if (!isObject(O)) return false;\n var spreadable = O[IS_CONCAT_SPREADABLE];\n return spreadable !== undefined ? !!spreadable : isArray(O);\n};\n\nvar FORCED = !IS_CONCAT_SPREADABLE_SUPPORT || !arrayMethodHasSpeciesSupport('concat');\n\n// `Array.prototype.concat` method\n// https://tc39.es/ecma262/#sec-array.prototype.concat\n// with adding support of @@isConcatSpreadable and @@species\n$({ target: 'Array', proto: true, arity: 1, forced: FORCED }, {\n // eslint-disable-next-line no-unused-vars -- required for `.length`\n concat: function concat(arg) {\n var O = toObject(this);\n var A = arraySpeciesCreate(O, 0);\n var n = 0;\n var i, k, length, len, E;\n for (i = -1, length = arguments.length; i < length; i++) {\n E = i === -1 ? O : arguments[i];\n if (isConcatSpreadable(E)) {\n len = lengthOfArrayLike(E);\n doesNotExceedSafeInteger(n + len);\n for (k = 0; k < len; k++, n++) if (k in E) createProperty(A, n, E[k]);\n } else {\n doesNotExceedSafeInteger(n + 1);\n createProperty(A, n++, E);\n }\n }\n setArrayLength(A, n);\n return A;\n }\n});\n", "'use strict';\nvar tryToString = require('../internals/try-to-string');\n\nvar $TypeError = TypeError;\n\nmodule.exports = function (O, P) {\n if (!delete O[P]) throw new $TypeError('Cannot delete property ' + tryToString(P) + ' of ' + tryToString(O));\n};\n", "'use strict';\nvar toObject = require('../internals/to-object');\nvar toAbsoluteIndex = require('../internals/to-absolute-index');\nvar lengthOfArrayLike = require('../internals/length-of-array-like');\nvar deletePropertyOrThrow = require('../internals/delete-property-or-throw');\n\nvar min = Math.min;\n\n// `Array.prototype.copyWithin` method implementation\n// https://tc39.es/ecma262/#sec-array.prototype.copywithin\n// eslint-disable-next-line es/no-array-prototype-copywithin -- safe\nmodule.exports = [].copyWithin || function copyWithin(target /* = 0 */, start /* = 0, end = @length */) {\n var O = toObject(this);\n var len = lengthOfArrayLike(O);\n var to = toAbsoluteIndex(target, len);\n var from = toAbsoluteIndex(start, len);\n var end = arguments.length > 2 ? arguments[2] : undefined;\n var count = min((end === undefined ? len : toAbsoluteIndex(end, len)) - from, len - to);\n var inc = 1;\n if (from < to && to < from + count) {\n inc = -1;\n from += count - 1;\n to += count - 1;\n }\n while (count-- > 0) {\n if (from in O) O[to] = O[from];\n else deletePropertyOrThrow(O, to);\n to += inc;\n from += inc;\n } return O;\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar copyWithin = require('../internals/array-copy-within');\nvar addToUnscopables = require('../internals/add-to-unscopables');\n\n// `Array.prototype.copyWithin` method\n// https://tc39.es/ecma262/#sec-array.prototype.copywithin\n$({ target: 'Array', proto: true }, {\n copyWithin: copyWithin\n});\n\n// https://tc39.es/ecma262/#sec-array.prototype-@@unscopables\naddToUnscopables('copyWithin');\n", "'use strict';\nvar fails = require('../internals/fails');\n\nmodule.exports = function (METHOD_NAME, argument) {\n var method = [][METHOD_NAME];\n return !!method && fails(function () {\n // eslint-disable-next-line no-useless-call -- required for testing\n method.call(null, argument || function () { return 1; }, 1);\n });\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar $every = require('../internals/array-iteration').every;\nvar arrayMethodIsStrict = require('../internals/array-method-is-strict');\n\nvar STRICT_METHOD = arrayMethodIsStrict('every');\n\n// `Array.prototype.every` method\n// https://tc39.es/ecma262/#sec-array.prototype.every\n$({ target: 'Array', proto: true, forced: !STRICT_METHOD }, {\n every: function every(callbackfn /* , thisArg */) {\n return $every(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);\n }\n});\n", "'use strict';\nvar toObject = require('../internals/to-object');\nvar toAbsoluteIndex = require('../internals/to-absolute-index');\nvar lengthOfArrayLike = require('../internals/length-of-array-like');\n\n// `Array.prototype.fill` method implementation\n// https://tc39.es/ecma262/#sec-array.prototype.fill\nmodule.exports = function fill(value /* , start = 0, end = @length */) {\n var O = toObject(this);\n var length = lengthOfArrayLike(O);\n var argumentsLength = arguments.length;\n var index = toAbsoluteIndex(argumentsLength > 1 ? arguments[1] : undefined, length);\n var end = argumentsLength > 2 ? arguments[2] : undefined;\n var endPos = end === undefined ? length : toAbsoluteIndex(end, length);\n while (endPos > index) O[index++] = value;\n return O;\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar fill = require('../internals/array-fill');\nvar addToUnscopables = require('../internals/add-to-unscopables');\n\n// `Array.prototype.fill` method\n// https://tc39.es/ecma262/#sec-array.prototype.fill\n$({ target: 'Array', proto: true }, {\n fill: fill\n});\n\n// https://tc39.es/ecma262/#sec-array.prototype-@@unscopables\naddToUnscopables('fill');\n", "'use strict';\nvar $ = require('../internals/export');\nvar $filter = require('../internals/array-iteration').filter;\nvar arrayMethodHasSpeciesSupport = require('../internals/array-method-has-species-support');\n\nvar HAS_SPECIES_SUPPORT = arrayMethodHasSpeciesSupport('filter');\n\n// `Array.prototype.filter` method\n// https://tc39.es/ecma262/#sec-array.prototype.filter\n// with adding support of @@species\n$({ target: 'Array', proto: true, forced: !HAS_SPECIES_SUPPORT }, {\n filter: function filter(callbackfn /* , thisArg */) {\n return $filter(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar $find = require('../internals/array-iteration').find;\nvar addToUnscopables = require('../internals/add-to-unscopables');\n\nvar FIND = 'find';\nvar SKIPS_HOLES = true;\n\n// Shouldn't skip holes\n// eslint-disable-next-line es/no-array-prototype-find -- testing\nif (FIND in []) Array(1)[FIND](function () { SKIPS_HOLES = false; });\n\n// `Array.prototype.find` method\n// https://tc39.es/ecma262/#sec-array.prototype.find\n$({ target: 'Array', proto: true, forced: SKIPS_HOLES }, {\n find: function find(callbackfn /* , that = undefined */) {\n return $find(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);\n }\n});\n\n// https://tc39.es/ecma262/#sec-array.prototype-@@unscopables\naddToUnscopables(FIND);\n", "'use strict';\nvar $ = require('../internals/export');\nvar $findIndex = require('../internals/array-iteration').findIndex;\nvar addToUnscopables = require('../internals/add-to-unscopables');\n\nvar FIND_INDEX = 'findIndex';\nvar SKIPS_HOLES = true;\n\n// Shouldn't skip holes\n// eslint-disable-next-line es/no-array-prototype-findindex -- testing\nif (FIND_INDEX in []) Array(1)[FIND_INDEX](function () { SKIPS_HOLES = false; });\n\n// `Array.prototype.findIndex` method\n// https://tc39.es/ecma262/#sec-array.prototype.findindex\n$({ target: 'Array', proto: true, forced: SKIPS_HOLES }, {\n findIndex: function findIndex(callbackfn /* , that = undefined */) {\n return $findIndex(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);\n }\n});\n\n// https://tc39.es/ecma262/#sec-array.prototype-@@unscopables\naddToUnscopables(FIND_INDEX);\n", "'use strict';\nvar bind = require('../internals/function-bind-context');\nvar IndexedObject = require('../internals/indexed-object');\nvar toObject = require('../internals/to-object');\nvar lengthOfArrayLike = require('../internals/length-of-array-like');\n\n// `Array.prototype.{ findLast, findLastIndex }` methods implementation\nvar createMethod = function (TYPE) {\n var IS_FIND_LAST_INDEX = TYPE === 1;\n return function ($this, callbackfn, that) {\n var O = toObject($this);\n var self = IndexedObject(O);\n var index = lengthOfArrayLike(self);\n var boundFunction = bind(callbackfn, that);\n var value, result;\n while (index-- > 0) {\n value = self[index];\n result = boundFunction(value, index, O);\n if (result) switch (TYPE) {\n case 0: return value; // findLast\n case 1: return index; // findLastIndex\n }\n }\n return IS_FIND_LAST_INDEX ? -1 : undefined;\n };\n};\n\nmodule.exports = {\n // `Array.prototype.findLast` method\n // https://github.com/tc39/proposal-array-find-from-last\n findLast: createMethod(0),\n // `Array.prototype.findLastIndex` method\n // https://github.com/tc39/proposal-array-find-from-last\n findLastIndex: createMethod(1)\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar $findLast = require('../internals/array-iteration-from-last').findLast;\nvar addToUnscopables = require('../internals/add-to-unscopables');\n\n// `Array.prototype.findLast` method\n// https://tc39.es/ecma262/#sec-array.prototype.findlast\n$({ target: 'Array', proto: true }, {\n findLast: function findLast(callbackfn /* , that = undefined */) {\n return $findLast(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);\n }\n});\n\naddToUnscopables('findLast');\n", "'use strict';\nvar $ = require('../internals/export');\nvar $findLastIndex = require('../internals/array-iteration-from-last').findLastIndex;\nvar addToUnscopables = require('../internals/add-to-unscopables');\n\n// `Array.prototype.findLastIndex` method\n// https://tc39.es/ecma262/#sec-array.prototype.findlastindex\n$({ target: 'Array', proto: true }, {\n findLastIndex: function findLastIndex(callbackfn /* , that = undefined */) {\n return $findLastIndex(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);\n }\n});\n\naddToUnscopables('findLastIndex');\n", "'use strict';\nvar isArray = require('../internals/is-array');\nvar lengthOfArrayLike = require('../internals/length-of-array-like');\nvar doesNotExceedSafeInteger = require('../internals/does-not-exceed-safe-integer');\nvar bind = require('../internals/function-bind-context');\nvar createProperty = require('../internals/create-property');\n\n// `FlattenIntoArray` abstract operation\n// https://tc39.es/ecma262/#sec-flattenintoarray\nvar flattenIntoArray = function (target, original, source, sourceLen, start, depth, mapper, thisArg) {\n var targetIndex = start;\n var sourceIndex = 0;\n var mapFn = mapper ? bind(mapper, thisArg) : false;\n var element, elementLen;\n\n while (sourceIndex < sourceLen) {\n if (sourceIndex in source) {\n element = mapFn ? mapFn(source[sourceIndex], sourceIndex, original) : source[sourceIndex];\n\n if (depth > 0 && isArray(element)) {\n elementLen = lengthOfArrayLike(element);\n targetIndex = flattenIntoArray(target, original, element, elementLen, targetIndex, depth - 1) - 1;\n } else {\n doesNotExceedSafeInteger(targetIndex + 1);\n createProperty(target, targetIndex, element);\n }\n\n targetIndex++;\n }\n sourceIndex++;\n }\n return targetIndex;\n};\n\nmodule.exports = flattenIntoArray;\n", "'use strict';\nvar $ = require('../internals/export');\nvar flattenIntoArray = require('../internals/flatten-into-array');\nvar toObject = require('../internals/to-object');\nvar lengthOfArrayLike = require('../internals/length-of-array-like');\nvar toIntegerOrInfinity = require('../internals/to-integer-or-infinity');\nvar arraySpeciesCreate = require('../internals/array-species-create');\n\n// `Array.prototype.flat` method\n// https://tc39.es/ecma262/#sec-array.prototype.flat\n$({ target: 'Array', proto: true }, {\n flat: function flat(/* depthArg = 1 */) {\n var depthArg = arguments.length ? arguments[0] : undefined;\n var O = toObject(this);\n var sourceLen = lengthOfArrayLike(O);\n var depthNum = depthArg === undefined ? 1 : toIntegerOrInfinity(depthArg);\n var A = arraySpeciesCreate(O, 0);\n flattenIntoArray(A, O, O, sourceLen, 0, depthNum);\n return A;\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar flattenIntoArray = require('../internals/flatten-into-array');\nvar aCallable = require('../internals/a-callable');\nvar toObject = require('../internals/to-object');\nvar lengthOfArrayLike = require('../internals/length-of-array-like');\nvar arraySpeciesCreate = require('../internals/array-species-create');\n\n// `Array.prototype.flatMap` method\n// https://tc39.es/ecma262/#sec-array.prototype.flatmap\n$({ target: 'Array', proto: true }, {\n flatMap: function flatMap(callbackfn /* , thisArg */) {\n var O = toObject(this);\n var sourceLen = lengthOfArrayLike(O);\n var A;\n aCallable(callbackfn);\n A = arraySpeciesCreate(O, 0);\n flattenIntoArray(A, O, O, sourceLen, 0, 1, callbackfn, arguments.length > 1 ? arguments[1] : undefined);\n return A;\n }\n});\n", "'use strict';\nvar $forEach = require('../internals/array-iteration').forEach;\nvar arrayMethodIsStrict = require('../internals/array-method-is-strict');\n\nvar STRICT_METHOD = arrayMethodIsStrict('forEach');\n\n// `Array.prototype.forEach` method implementation\n// https://tc39.es/ecma262/#sec-array.prototype.foreach\nmodule.exports = !STRICT_METHOD ? function forEach(callbackfn /* , thisArg */) {\n return $forEach(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);\n// eslint-disable-next-line es/no-array-prototype-foreach -- safe\n} : [].forEach;\n", "'use strict';\nvar $ = require('../internals/export');\nvar forEach = require('../internals/array-for-each');\n\n// `Array.prototype.forEach` method\n// https://tc39.es/ecma262/#sec-array.prototype.foreach\n// eslint-disable-next-line es/no-array-prototype-foreach -- safe\n$({ target: 'Array', proto: true, forced: [].forEach !== forEach }, {\n forEach: forEach\n});\n", "'use strict';\nvar anObject = require('../internals/an-object');\nvar iteratorClose = require('../internals/iterator-close');\n\n// call something on iterator step with safe closing on error\nmodule.exports = function (iterator, fn, value, ENTRIES) {\n try {\n return ENTRIES ? fn(anObject(value)[0], value[1]) : fn(value);\n } catch (error) {\n iteratorClose(iterator, 'throw', error);\n }\n};\n", "'use strict';\nvar bind = require('../internals/function-bind-context');\nvar call = require('../internals/function-call');\nvar toObject = require('../internals/to-object');\nvar callWithSafeIterationClosing = require('../internals/call-with-safe-iteration-closing');\nvar isArrayIteratorMethod = require('../internals/is-array-iterator-method');\nvar isConstructor = require('../internals/is-constructor');\nvar lengthOfArrayLike = require('../internals/length-of-array-like');\nvar createProperty = require('../internals/create-property');\nvar setArrayLength = require('../internals/array-set-length');\nvar getIterator = require('../internals/get-iterator');\nvar getIteratorMethod = require('../internals/get-iterator-method');\nvar iteratorClose = require('../internals/iterator-close');\n\nvar $Array = Array;\n\n// `Array.from` method implementation\n// https://tc39.es/ecma262/#sec-array.from\nmodule.exports = function from(arrayLike /* , mapfn = undefined, thisArg = undefined */) {\n var IS_CONSTRUCTOR = isConstructor(this);\n var argumentsLength = arguments.length;\n var mapfn = argumentsLength > 1 ? arguments[1] : undefined;\n var mapping = mapfn !== undefined;\n if (mapping) mapfn = bind(mapfn, argumentsLength > 2 ? arguments[2] : undefined);\n var O = toObject(arrayLike);\n var iteratorMethod = getIteratorMethod(O);\n var index = 0;\n var length, result, step, iterator, next, value;\n // if the target is not iterable or it's an array with the default iterator - use a simple case\n if (iteratorMethod && !(this === $Array && isArrayIteratorMethod(iteratorMethod))) {\n result = IS_CONSTRUCTOR ? new this() : [];\n iterator = getIterator(O, iteratorMethod);\n next = iterator.next;\n for (;!(step = call(next, iterator)).done; index++) {\n value = mapping ? callWithSafeIterationClosing(iterator, mapfn, [step.value, index], true) : step.value;\n try {\n createProperty(result, index, value);\n } catch (error) {\n iteratorClose(iterator, 'throw', error);\n }\n }\n } else {\n length = lengthOfArrayLike(O);\n result = IS_CONSTRUCTOR ? new this(length) : $Array(length);\n for (;length > index; index++) {\n value = mapping ? mapfn(O[index], index) : O[index];\n createProperty(result, index, value);\n }\n }\n setArrayLength(result, index);\n return result;\n};\n", "'use strict';\nvar wellKnownSymbol = require('../internals/well-known-symbol');\n\nvar ITERATOR = wellKnownSymbol('iterator');\nvar SAFE_CLOSING = false;\n\ntry {\n var called = 0;\n var iteratorWithReturn = {\n next: function () {\n return { done: !!called++ };\n },\n 'return': function () {\n SAFE_CLOSING = true;\n }\n };\n // eslint-disable-next-line unicorn/no-immediate-mutation -- ES3 syntax limitation\n iteratorWithReturn[ITERATOR] = function () {\n return this;\n };\n // eslint-disable-next-line es/no-array-from, no-throw-literal -- required for testing\n Array.from(iteratorWithReturn, function () { throw 2; });\n} catch (error) { /* empty */ }\n\nmodule.exports = function (exec, SKIP_CLOSING) {\n try {\n if (!SKIP_CLOSING && !SAFE_CLOSING) return false;\n } catch (error) { return false; } // workaround of old WebKit + `eval` bug\n var ITERATION_SUPPORT = false;\n try {\n var object = {};\n // eslint-disable-next-line unicorn/no-immediate-mutation -- ES3 syntax limitation\n object[ITERATOR] = function () {\n return {\n next: function () {\n return { done: ITERATION_SUPPORT = true };\n }\n };\n };\n exec(object);\n } catch (error) { /* empty */ }\n return ITERATION_SUPPORT;\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar from = require('../internals/array-from');\nvar checkCorrectnessOfIteration = require('../internals/check-correctness-of-iteration');\n\nvar INCORRECT_ITERATION = !checkCorrectnessOfIteration(function (iterable) {\n // eslint-disable-next-line es/no-array-from -- required for testing\n Array.from(iterable);\n});\n\n// `Array.from` method\n// https://tc39.es/ecma262/#sec-array.from\n$({ target: 'Array', stat: true, forced: INCORRECT_ITERATION }, {\n from: from\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar $includes = require('../internals/array-includes').includes;\nvar fails = require('../internals/fails');\nvar addToUnscopables = require('../internals/add-to-unscopables');\n\n// FF99+ bug\nvar BROKEN_ON_SPARSE = fails(function () {\n // eslint-disable-next-line es/no-array-prototype-includes -- detection\n return !Array(1).includes();\n});\n\n// Safari 26.4- bug\nvar BROKEN_ON_SPARSE_WITH_FROM_INDEX = fails(function () {\n // eslint-disable-next-line no-sparse-arrays, es/no-array-prototype-includes -- detection\n return [, 1].includes(undefined, 1);\n});\n\n// `Array.prototype.includes` method\n// https://tc39.es/ecma262/#sec-array.prototype.includes\n$({ target: 'Array', proto: true, forced: BROKEN_ON_SPARSE || BROKEN_ON_SPARSE_WITH_FROM_INDEX }, {\n includes: function includes(el /* , fromIndex = 0 */) {\n return $includes(this, el, arguments.length > 1 ? arguments[1] : undefined);\n }\n});\n\n// https://tc39.es/ecma262/#sec-array.prototype-@@unscopables\naddToUnscopables('includes');\n", "'use strict';\n/* eslint-disable es/no-array-prototype-indexof -- required for testing */\nvar $ = require('../internals/export');\nvar uncurryThis = require('../internals/function-uncurry-this-clause');\nvar $indexOf = require('../internals/array-includes').indexOf;\nvar arrayMethodIsStrict = require('../internals/array-method-is-strict');\n\nvar nativeIndexOf = uncurryThis([].indexOf);\n\nvar NEGATIVE_ZERO = !!nativeIndexOf && 1 / nativeIndexOf([1], 1, -0) < 0;\nvar FORCED = NEGATIVE_ZERO || !arrayMethodIsStrict('indexOf');\n\n// `Array.prototype.indexOf` method\n// https://tc39.es/ecma262/#sec-array.prototype.indexof\n$({ target: 'Array', proto: true, forced: FORCED }, {\n indexOf: function indexOf(searchElement /* , fromIndex = 0 */) {\n var fromIndex = arguments.length > 1 ? arguments[1] : undefined;\n return NEGATIVE_ZERO\n // convert -0 to +0\n ? nativeIndexOf(this, searchElement, fromIndex) || 0\n : $indexOf(this, searchElement, fromIndex);\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar isArray = require('../internals/is-array');\n\n// `Array.isArray` method\n// https://tc39.es/ecma262/#sec-array.isarray\n$({ target: 'Array', stat: true }, {\n isArray: isArray\n});\n", "'use strict';\nvar fails = require('../internals/fails');\nvar isCallable = require('../internals/is-callable');\nvar isObject = require('../internals/is-object');\nvar create = require('../internals/object-create');\nvar getPrototypeOf = require('../internals/object-get-prototype-of');\nvar defineBuiltIn = require('../internals/define-built-in');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\nvar IS_PURE = require('../internals/is-pure');\n\nvar ITERATOR = wellKnownSymbol('iterator');\nvar BUGGY_SAFARI_ITERATORS = false;\n\n// `%IteratorPrototype%` object\n// https://tc39.es/ecma262/#sec-%iteratorprototype%-object\nvar IteratorPrototype, PrototypeOfArrayIteratorPrototype, arrayIterator;\n\n/* eslint-disable es/no-array-prototype-keys -- safe */\nif ([].keys) {\n arrayIterator = [].keys();\n // Safari 8 has buggy iterators w/o `next`\n if (!('next' in arrayIterator)) BUGGY_SAFARI_ITERATORS = true;\n else {\n PrototypeOfArrayIteratorPrototype = getPrototypeOf(getPrototypeOf(arrayIterator));\n if (PrototypeOfArrayIteratorPrototype !== Object.prototype) IteratorPrototype = PrototypeOfArrayIteratorPrototype;\n }\n}\n\nvar NEW_ITERATOR_PROTOTYPE = !isObject(IteratorPrototype) || fails(function () {\n var test = {};\n // FF44- legacy iterators case\n return IteratorPrototype[ITERATOR].call(test) !== test;\n});\n\nif (NEW_ITERATOR_PROTOTYPE) IteratorPrototype = {};\nelse if (IS_PURE) IteratorPrototype = create(IteratorPrototype);\n\n// `%IteratorPrototype%[@@iterator]()` method\n// https://tc39.es/ecma262/#sec-%iteratorprototype%-@@iterator\nif (!isCallable(IteratorPrototype[ITERATOR])) {\n defineBuiltIn(IteratorPrototype, ITERATOR, function () {\n return this;\n });\n}\n\nmodule.exports = {\n IteratorPrototype: IteratorPrototype,\n BUGGY_SAFARI_ITERATORS: BUGGY_SAFARI_ITERATORS\n};\n", "'use strict';\nvar IteratorPrototype = require('../internals/iterators-core').IteratorPrototype;\nvar create = require('../internals/object-create');\nvar createPropertyDescriptor = require('../internals/create-property-descriptor');\nvar setToStringTag = require('../internals/set-to-string-tag');\nvar Iterators = require('../internals/iterators');\n\nvar returnThis = function () { return this; };\n\nmodule.exports = function (IteratorConstructor, NAME, next, ENUMERABLE_NEXT) {\n var TO_STRING_TAG = NAME + ' Iterator';\n IteratorConstructor.prototype = create(IteratorPrototype, { next: createPropertyDescriptor(+!ENUMERABLE_NEXT, next) });\n setToStringTag(IteratorConstructor, TO_STRING_TAG, false, true);\n Iterators[TO_STRING_TAG] = returnThis;\n return IteratorConstructor;\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar call = require('../internals/function-call');\nvar IS_PURE = require('../internals/is-pure');\nvar FunctionName = require('../internals/function-name');\nvar isCallable = require('../internals/is-callable');\nvar createIteratorConstructor = require('../internals/iterator-create-constructor');\nvar getPrototypeOf = require('../internals/object-get-prototype-of');\nvar setPrototypeOf = require('../internals/object-set-prototype-of');\nvar setToStringTag = require('../internals/set-to-string-tag');\nvar createNonEnumerableProperty = require('../internals/create-non-enumerable-property');\nvar defineBuiltIn = require('../internals/define-built-in');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\nvar Iterators = require('../internals/iterators');\nvar IteratorsCore = require('../internals/iterators-core');\n\nvar PROPER_FUNCTION_NAME = FunctionName.PROPER;\nvar CONFIGURABLE_FUNCTION_NAME = FunctionName.CONFIGURABLE;\nvar IteratorPrototype = IteratorsCore.IteratorPrototype;\nvar BUGGY_SAFARI_ITERATORS = IteratorsCore.BUGGY_SAFARI_ITERATORS;\nvar ITERATOR = wellKnownSymbol('iterator');\nvar KEYS = 'keys';\nvar VALUES = 'values';\nvar ENTRIES = 'entries';\n\nvar returnThis = function () { return this; };\n\nmodule.exports = function (Iterable, NAME, IteratorConstructor, next, DEFAULT, IS_SET, FORCED) {\n createIteratorConstructor(IteratorConstructor, NAME, next);\n\n var getIterationMethod = function (KIND) {\n if (KIND === DEFAULT && defaultIterator) return defaultIterator;\n if (!BUGGY_SAFARI_ITERATORS && KIND && KIND in IterablePrototype) return IterablePrototype[KIND];\n\n switch (KIND) {\n case KEYS: return function keys() { return new IteratorConstructor(this, KIND); };\n case VALUES: return function values() { return new IteratorConstructor(this, KIND); };\n case ENTRIES: return function entries() { return new IteratorConstructor(this, KIND); };\n }\n\n return function () { return new IteratorConstructor(this); };\n };\n\n var TO_STRING_TAG = NAME + ' Iterator';\n var INCORRECT_VALUES_NAME = false;\n var IterablePrototype = Iterable.prototype;\n var nativeIterator = IterablePrototype[ITERATOR]\n || IterablePrototype['@@iterator']\n || DEFAULT && IterablePrototype[DEFAULT];\n var defaultIterator = !BUGGY_SAFARI_ITERATORS && nativeIterator || getIterationMethod(DEFAULT);\n var anyNativeIterator = NAME === 'Array' ? IterablePrototype.entries || nativeIterator : nativeIterator;\n var CurrentIteratorPrototype, methods, KEY;\n\n // fix native\n if (anyNativeIterator) {\n CurrentIteratorPrototype = getPrototypeOf(anyNativeIterator.call(new Iterable()));\n if (CurrentIteratorPrototype !== Object.prototype && CurrentIteratorPrototype.next) {\n if (!IS_PURE && getPrototypeOf(CurrentIteratorPrototype) !== IteratorPrototype) {\n if (setPrototypeOf) {\n setPrototypeOf(CurrentIteratorPrototype, IteratorPrototype);\n } else if (!isCallable(CurrentIteratorPrototype[ITERATOR])) {\n defineBuiltIn(CurrentIteratorPrototype, ITERATOR, returnThis);\n }\n }\n // Set @@toStringTag to native iterators\n setToStringTag(CurrentIteratorPrototype, TO_STRING_TAG, true, true);\n if (IS_PURE) Iterators[TO_STRING_TAG] = returnThis;\n }\n }\n\n // fix Array.prototype.{ values, @@iterator }.name in V8 / FF\n if (PROPER_FUNCTION_NAME && DEFAULT === VALUES && nativeIterator && nativeIterator.name !== VALUES) {\n if (!IS_PURE && CONFIGURABLE_FUNCTION_NAME) {\n createNonEnumerableProperty(IterablePrototype, 'name', VALUES);\n } else {\n INCORRECT_VALUES_NAME = true;\n defaultIterator = function values() { return call(nativeIterator, this); };\n }\n }\n\n // export additional methods\n if (DEFAULT) {\n methods = {\n values: getIterationMethod(VALUES),\n keys: IS_SET ? defaultIterator : getIterationMethod(KEYS),\n entries: getIterationMethod(ENTRIES)\n };\n if (FORCED) for (KEY in methods) {\n if (BUGGY_SAFARI_ITERATORS || INCORRECT_VALUES_NAME || !(KEY in IterablePrototype)) {\n defineBuiltIn(IterablePrototype, KEY, methods[KEY]);\n }\n } else $({ target: NAME, proto: true, forced: BUGGY_SAFARI_ITERATORS || INCORRECT_VALUES_NAME }, methods);\n }\n\n // define iterator\n if ((!IS_PURE || FORCED) && IterablePrototype[ITERATOR] !== defaultIterator) {\n defineBuiltIn(IterablePrototype, ITERATOR, defaultIterator, { name: DEFAULT });\n }\n Iterators[NAME] = defaultIterator;\n\n return methods;\n};\n", "'use strict';\n// `CreateIterResultObject` abstract operation\n// https://tc39.es/ecma262/#sec-createiterresultobject\nmodule.exports = function (value, done) {\n return { value: value, done: done };\n};\n", "'use strict';\nvar toIndexedObject = require('../internals/to-indexed-object');\nvar addToUnscopables = require('../internals/add-to-unscopables');\nvar Iterators = require('../internals/iterators');\nvar InternalStateModule = require('../internals/internal-state');\nvar defineProperty = require('../internals/object-define-property').f;\nvar defineIterator = require('../internals/iterator-define');\nvar createIterResultObject = require('../internals/create-iter-result-object');\nvar IS_PURE = require('../internals/is-pure');\nvar DESCRIPTORS = require('../internals/descriptors');\n\nvar ARRAY_ITERATOR = 'Array Iterator';\nvar setInternalState = InternalStateModule.set;\nvar getInternalState = InternalStateModule.getterFor(ARRAY_ITERATOR);\n\n// `Array.prototype.entries` method\n// https://tc39.es/ecma262/#sec-array.prototype.entries\n// `Array.prototype.keys` method\n// https://tc39.es/ecma262/#sec-array.prototype.keys\n// `Array.prototype.values` method\n// https://tc39.es/ecma262/#sec-array.prototype.values\n// `Array.prototype[@@iterator]` method\n// https://tc39.es/ecma262/#sec-array.prototype-@@iterator\n// `CreateArrayIterator` internal method\n// https://tc39.es/ecma262/#sec-createarrayiterator\nmodule.exports = defineIterator(Array, 'Array', function (iterated, kind) {\n setInternalState(this, {\n type: ARRAY_ITERATOR,\n target: toIndexedObject(iterated), // target\n index: 0, // next index\n kind: kind // kind\n });\n// `%ArrayIteratorPrototype%.next` method\n// https://tc39.es/ecma262/#sec-%arrayiteratorprototype%.next\n}, function () {\n var state = getInternalState(this);\n var target = state.target;\n var index = state.index++;\n if (!target || index >= target.length) {\n state.target = null;\n return createIterResultObject(undefined, true);\n }\n switch (state.kind) {\n case 'keys': return createIterResultObject(index, false);\n case 'values': return createIterResultObject(target[index], false);\n } return createIterResultObject([index, target[index]], false);\n}, 'values');\n\n// argumentsList[@@iterator] is %ArrayProto_values%\n// https://tc39.es/ecma262/#sec-createunmappedargumentsobject\n// https://tc39.es/ecma262/#sec-createmappedargumentsobject\nvar values = Iterators.Arguments = Iterators.Array;\n\n// https://tc39.es/ecma262/#sec-array.prototype-@@unscopables\naddToUnscopables('keys');\naddToUnscopables('values');\naddToUnscopables('entries');\n\n// V8 ~ Chrome 45- bug\nif (!IS_PURE && DESCRIPTORS && values.name !== 'values') try {\n defineProperty(values, 'name', { value: 'values' });\n} catch (error) { /* empty */ }\n", "'use strict';\nvar $ = require('../internals/export');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar IndexedObject = require('../internals/indexed-object');\nvar toIndexedObject = require('../internals/to-indexed-object');\nvar arrayMethodIsStrict = require('../internals/array-method-is-strict');\n\nvar nativeJoin = uncurryThis([].join);\n\nvar ES3_STRINGS = IndexedObject !== Object;\nvar FORCED = ES3_STRINGS || !arrayMethodIsStrict('join', ',');\n\n// `Array.prototype.join` method\n// https://tc39.es/ecma262/#sec-array.prototype.join\n$({ target: 'Array', proto: true, forced: FORCED }, {\n join: function join(separator) {\n return nativeJoin(toIndexedObject(this), separator === undefined ? ',' : separator);\n }\n});\n", "'use strict';\n/* eslint-disable es/no-array-prototype-lastindexof -- safe */\nvar apply = require('../internals/function-apply');\nvar toIndexedObject = require('../internals/to-indexed-object');\nvar toIntegerOrInfinity = require('../internals/to-integer-or-infinity');\nvar lengthOfArrayLike = require('../internals/length-of-array-like');\nvar arrayMethodIsStrict = require('../internals/array-method-is-strict');\n\nvar min = Math.min;\nvar $lastIndexOf = [].lastIndexOf;\nvar NEGATIVE_ZERO = !!$lastIndexOf && 1 / [1].lastIndexOf(1, -0) < 0;\nvar STRICT_METHOD = arrayMethodIsStrict('lastIndexOf');\nvar FORCED = NEGATIVE_ZERO || !STRICT_METHOD;\n\n// `Array.prototype.lastIndexOf` method implementation\n// https://tc39.es/ecma262/#sec-array.prototype.lastindexof\nmodule.exports = FORCED ? function lastIndexOf(searchElement /* , fromIndex = @[*-1] */) {\n // convert -0 to +0\n if (NEGATIVE_ZERO) return apply($lastIndexOf, this, arguments) || 0;\n var O = toIndexedObject(this);\n var length = lengthOfArrayLike(O);\n if (length === 0) return -1;\n var index = length - 1;\n if (arguments.length > 1) index = min(index, toIntegerOrInfinity(arguments[1]));\n if (index < 0) index = length + index;\n for (;index >= 0; index--) if (index in O && O[index] === searchElement) return index || 0;\n return -1;\n} : $lastIndexOf;\n", "'use strict';\nvar $ = require('../internals/export');\nvar lastIndexOf = require('../internals/array-last-index-of');\n\n// `Array.prototype.lastIndexOf` method\n// https://tc39.es/ecma262/#sec-array.prototype.lastindexof\n// eslint-disable-next-line es/no-array-prototype-lastindexof -- required for testing\n$({ target: 'Array', proto: true, forced: lastIndexOf !== [].lastIndexOf }, {\n lastIndexOf: lastIndexOf\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar $map = require('../internals/array-iteration').map;\nvar arrayMethodHasSpeciesSupport = require('../internals/array-method-has-species-support');\n\nvar HAS_SPECIES_SUPPORT = arrayMethodHasSpeciesSupport('map');\n\n// `Array.prototype.map` method\n// https://tc39.es/ecma262/#sec-array.prototype.map\n// with adding support of @@species\n$({ target: 'Array', proto: true, forced: !HAS_SPECIES_SUPPORT }, {\n map: function map(callbackfn /* , thisArg */) {\n return $map(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar fails = require('../internals/fails');\nvar isConstructor = require('../internals/is-constructor');\nvar createProperty = require('../internals/create-property');\nvar setArrayLength = require('../internals/array-set-length');\n\nvar $Array = Array;\n\nvar ISNT_GENERIC = fails(function () {\n function F() { /* empty */ }\n // eslint-disable-next-line es/no-array-of -- safe\n return !($Array.of.call(F) instanceof F);\n});\n\n// `Array.of` method\n// https://tc39.es/ecma262/#sec-array.of\n// WebKit Array.of isn't generic\n$({ target: 'Array', stat: true, forced: ISNT_GENERIC }, {\n of: function of(/* ...args */) {\n var index = 0;\n var argumentsLength = arguments.length;\n var result = new (isConstructor(this) ? this : $Array)(argumentsLength);\n while (argumentsLength > index) createProperty(result, index, arguments[index++]);\n setArrayLength(result, argumentsLength);\n return result;\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar toObject = require('../internals/to-object');\nvar lengthOfArrayLike = require('../internals/length-of-array-like');\nvar setArrayLength = require('../internals/array-set-length');\nvar doesNotExceedSafeInteger = require('../internals/does-not-exceed-safe-integer');\nvar fails = require('../internals/fails');\n\nvar INCORRECT_TO_LENGTH = fails(function () {\n return [].push.call({ length: 0x100000000 }, 1) !== 4294967297;\n});\n\n// V8 <= 121 and Safari <= 15.4; FF < 23 throws InternalError\n// https://bugs.chromium.org/p/v8/issues/detail?id=12681\nvar properErrorOnNonWritableLength = function () {\n try {\n // eslint-disable-next-line es/no-object-defineproperty -- safe\n Object.defineProperty([], 'length', { writable: false }).push();\n } catch (error) {\n return error instanceof TypeError;\n }\n};\n\nvar FORCED = INCORRECT_TO_LENGTH || !properErrorOnNonWritableLength();\n\n// `Array.prototype.push` method\n// https://tc39.es/ecma262/#sec-array.prototype.push\n$({ target: 'Array', proto: true, arity: 1, forced: FORCED }, {\n // eslint-disable-next-line no-unused-vars -- required for `.length`\n push: function push(item) {\n var O = toObject(this);\n var len = lengthOfArrayLike(O);\n var argCount = arguments.length;\n doesNotExceedSafeInteger(len + argCount);\n for (var i = 0; i < argCount; i++) {\n O[len] = arguments[i];\n len++;\n }\n setArrayLength(O, len);\n return len;\n }\n});\n", "'use strict';\nvar aCallable = require('../internals/a-callable');\nvar toObject = require('../internals/to-object');\nvar IndexedObject = require('../internals/indexed-object');\nvar lengthOfArrayLike = require('../internals/length-of-array-like');\n\nvar $TypeError = TypeError;\n\nvar REDUCE_EMPTY = 'Reduce of empty array with no initial value';\n\n// `Array.prototype.{ reduce, reduceRight }` methods implementation\nvar createMethod = function (IS_RIGHT) {\n return function (that, callbackfn, argumentsLength, memo) {\n var O = toObject(that);\n var self = IndexedObject(O);\n var length = lengthOfArrayLike(O);\n aCallable(callbackfn);\n if (length === 0 && argumentsLength < 2) throw new $TypeError(REDUCE_EMPTY);\n var index = IS_RIGHT ? length - 1 : 0;\n var i = IS_RIGHT ? -1 : 1;\n if (argumentsLength < 2) while (true) {\n if (index in self) {\n memo = self[index];\n index += i;\n break;\n }\n index += i;\n if (IS_RIGHT ? index < 0 : length <= index) {\n throw new $TypeError(REDUCE_EMPTY);\n }\n }\n for (;IS_RIGHT ? index >= 0 : length > index; index += i) if (index in self) {\n memo = callbackfn(memo, self[index], index, O);\n }\n return memo;\n };\n};\n\nmodule.exports = {\n // `Array.prototype.reduce` method\n // https://tc39.es/ecma262/#sec-array.prototype.reduce\n left: createMethod(false),\n // `Array.prototype.reduceRight` method\n // https://tc39.es/ecma262/#sec-array.prototype.reduceright\n right: createMethod(true)\n};\n", "'use strict';\n/* global Bun, Deno -- detection */\nvar globalThis = require('../internals/global-this');\nvar userAgent = require('../internals/environment-user-agent');\nvar classof = require('../internals/classof-raw');\n\nvar userAgentStartsWith = function (string) {\n return userAgent.slice(0, string.length) === string;\n};\n\nmodule.exports = (function () {\n if (userAgentStartsWith('Bun/')) return 'BUN';\n if (userAgentStartsWith('Cloudflare-Workers')) return 'CLOUDFLARE';\n if (userAgentStartsWith('Deno/')) return 'DENO';\n if (userAgentStartsWith('Node.js/')) return 'NODE';\n if (globalThis.Bun && typeof Bun.version == 'string') return 'BUN';\n if (globalThis.Deno && typeof Deno.version == 'object') return 'DENO';\n if (classof(globalThis.process) === 'process') return 'NODE';\n if (globalThis.window && globalThis.document) return 'BROWSER';\n return 'REST';\n})();\n", "'use strict';\nvar ENVIRONMENT = require('../internals/environment');\n\nmodule.exports = ENVIRONMENT === 'NODE';\n", "'use strict';\nvar $ = require('../internals/export');\nvar $reduce = require('../internals/array-reduce').left;\nvar arrayMethodIsStrict = require('../internals/array-method-is-strict');\nvar CHROME_VERSION = require('../internals/environment-v8-version');\nvar IS_NODE = require('../internals/environment-is-node');\n\n// Chrome 80-82 has a critical bug\n// https://bugs.chromium.org/p/chromium/issues/detail?id=1049982\nvar CHROME_BUG = !IS_NODE && CHROME_VERSION > 79 && CHROME_VERSION < 83;\nvar FORCED = CHROME_BUG || !arrayMethodIsStrict('reduce');\n\n// `Array.prototype.reduce` method\n// https://tc39.es/ecma262/#sec-array.prototype.reduce\n$({ target: 'Array', proto: true, forced: FORCED }, {\n reduce: function reduce(callbackfn /* , initialValue */) {\n var length = arguments.length;\n return $reduce(this, callbackfn, length, length > 1 ? arguments[1] : undefined);\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar $reduceRight = require('../internals/array-reduce').right;\nvar arrayMethodIsStrict = require('../internals/array-method-is-strict');\nvar CHROME_VERSION = require('../internals/environment-v8-version');\nvar IS_NODE = require('../internals/environment-is-node');\n\n// Chrome 80-82 has a critical bug\n// https://bugs.chromium.org/p/chromium/issues/detail?id=1049982\nvar CHROME_BUG = !IS_NODE && CHROME_VERSION > 79 && CHROME_VERSION < 83;\nvar FORCED = CHROME_BUG || !arrayMethodIsStrict('reduceRight');\n\n// `Array.prototype.reduceRight` method\n// https://tc39.es/ecma262/#sec-array.prototype.reduceright\n$({ target: 'Array', proto: true, forced: FORCED }, {\n reduceRight: function reduceRight(callbackfn /* , initialValue */) {\n return $reduceRight(this, callbackfn, arguments.length, arguments.length > 1 ? arguments[1] : undefined);\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar isArray = require('../internals/is-array');\n\nvar nativeReverse = uncurryThis([].reverse);\nvar test = [1, 2];\n\n// `Array.prototype.reverse` method\n// https://tc39.es/ecma262/#sec-array.prototype.reverse\n// fix for Safari 12.0 bug\n// https://bugs.webkit.org/show_bug.cgi?id=188794\n$({ target: 'Array', proto: true, forced: String(test) === String(test.reverse()) }, {\n reverse: function reverse() {\n // eslint-disable-next-line no-self-assign -- dirty hack\n if (isArray(this)) this.length = this.length;\n return nativeReverse(this);\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar isArray = require('../internals/is-array');\nvar isConstructor = require('../internals/is-constructor');\nvar isObject = require('../internals/is-object');\nvar toAbsoluteIndex = require('../internals/to-absolute-index');\nvar lengthOfArrayLike = require('../internals/length-of-array-like');\nvar toIndexedObject = require('../internals/to-indexed-object');\nvar createProperty = require('../internals/create-property');\nvar setArrayLength = require('../internals/array-set-length');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\nvar arrayMethodHasSpeciesSupport = require('../internals/array-method-has-species-support');\nvar nativeSlice = require('../internals/array-slice');\n\nvar HAS_SPECIES_SUPPORT = arrayMethodHasSpeciesSupport('slice');\n\nvar SPECIES = wellKnownSymbol('species');\nvar $Array = Array;\nvar max = Math.max;\n\n// `Array.prototype.slice` method\n// https://tc39.es/ecma262/#sec-array.prototype.slice\n// fallback for not array-like ES3 strings and DOM objects\n$({ target: 'Array', proto: true, forced: !HAS_SPECIES_SUPPORT }, {\n slice: function slice(start, end) {\n var O = toIndexedObject(this);\n var length = lengthOfArrayLike(O);\n var k = toAbsoluteIndex(start, length);\n var fin = toAbsoluteIndex(end === undefined ? length : end, length);\n // inline `ArraySpeciesCreate` for usage native `Array#slice` where it's possible\n var Constructor, result, n;\n if (isArray(O)) {\n Constructor = O.constructor;\n // cross-realm fallback\n if (isConstructor(Constructor) && (Constructor === $Array || isArray(Constructor.prototype))) {\n Constructor = undefined;\n } else if (isObject(Constructor)) {\n Constructor = Constructor[SPECIES];\n if (Constructor === null) Constructor = undefined;\n }\n if (Constructor === $Array || Constructor === undefined) {\n return nativeSlice(O, k, fin);\n }\n }\n result = new (Constructor === undefined ? $Array : Constructor)(max(fin - k, 0));\n for (n = 0; k < fin; k++, n++) if (k in O) createProperty(result, n, O[k]);\n setArrayLength(result, n);\n return result;\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar $some = require('../internals/array-iteration').some;\nvar arrayMethodIsStrict = require('../internals/array-method-is-strict');\n\nvar STRICT_METHOD = arrayMethodIsStrict('some');\n\n// `Array.prototype.some` method\n// https://tc39.es/ecma262/#sec-array.prototype.some\n$({ target: 'Array', proto: true, forced: !STRICT_METHOD }, {\n some: function some(callbackfn /* , thisArg */) {\n return $some(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);\n }\n});\n", "'use strict';\nvar arraySlice = require('../internals/array-slice');\n\nvar floor = Math.floor;\n\nvar sort = function (array, comparefn) {\n var length = array.length;\n\n if (length < 8) {\n // insertion sort\n var i = 1;\n var element, j;\n\n while (i < length) {\n j = i;\n element = array[i];\n while (j && comparefn(array[j - 1], element) > 0) {\n array[j] = array[--j];\n }\n if (j !== i++) array[j] = element;\n }\n } else {\n // merge sort\n var middle = floor(length / 2);\n var left = sort(arraySlice(array, 0, middle), comparefn);\n var right = sort(arraySlice(array, middle), comparefn);\n var llength = left.length;\n var rlength = right.length;\n var lindex = 0;\n var rindex = 0;\n\n while (lindex < llength || rindex < rlength) {\n array[lindex + rindex] = (lindex < llength && rindex < rlength)\n ? comparefn(left[lindex], right[rindex]) <= 0 ? left[lindex++] : right[rindex++]\n : lindex < llength ? left[lindex++] : right[rindex++];\n }\n }\n\n return array;\n};\n\nmodule.exports = sort;\n", "'use strict';\nvar userAgent = require('../internals/environment-user-agent');\n\nvar firefox = userAgent.match(/firefox\\/(\\d+)/i);\n\nmodule.exports = !!firefox && +firefox[1];\n", "'use strict';\nvar UA = require('../internals/environment-user-agent');\n\nmodule.exports = /MSIE|Trident/.test(UA);\n", "'use strict';\nvar userAgent = require('../internals/environment-user-agent');\n\nvar webkit = userAgent.match(/AppleWebKit\\/(\\d+)\\./);\n\nmodule.exports = !!webkit && +webkit[1];\n", "'use strict';\nvar $ = require('../internals/export');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar aCallable = require('../internals/a-callable');\nvar toObject = require('../internals/to-object');\nvar lengthOfArrayLike = require('../internals/length-of-array-like');\nvar deletePropertyOrThrow = require('../internals/delete-property-or-throw');\nvar toString = require('../internals/to-string');\nvar fails = require('../internals/fails');\nvar internalSort = require('../internals/array-sort');\nvar arrayMethodIsStrict = require('../internals/array-method-is-strict');\nvar FF = require('../internals/environment-ff-version');\nvar IE_OR_EDGE = require('../internals/environment-is-ie-or-edge');\nvar V8 = require('../internals/environment-v8-version');\nvar WEBKIT = require('../internals/environment-webkit-version');\n\nvar test = [];\nvar nativeSort = uncurryThis(test.sort);\nvar push = uncurryThis(test.push);\n\n// IE8-\nvar FAILS_ON_UNDEFINED = fails(function () {\n test.sort(undefined);\n});\n// V8 bug\nvar FAILS_ON_NULL = fails(function () {\n test.sort(null);\n});\n// Old WebKit\nvar STRICT_METHOD = arrayMethodIsStrict('sort');\n\nvar STABLE_SORT = !fails(function () {\n // feature detection can be too slow, so check engines versions\n if (V8) return V8 < 70;\n if (FF && FF > 3) return;\n if (IE_OR_EDGE) return true;\n if (WEBKIT) return WEBKIT < 603;\n\n var result = '';\n var code, chr, value, index;\n\n // generate an array with more 512 elements (Chakra and old V8 fails only in this case)\n for (code = 65; code < 76; code++) {\n chr = String.fromCharCode(code);\n\n switch (code) {\n case 66: case 69: case 70: case 72: value = 3; break;\n case 68: case 71: value = 4; break;\n default: value = 2;\n }\n\n for (index = 0; index < 47; index++) {\n test.push({ k: chr + index, v: value });\n }\n }\n\n test.sort(function (a, b) { return b.v - a.v; });\n\n for (index = 0; index < test.length; index++) {\n chr = test[index].k.charAt(0);\n if (result.charAt(result.length - 1) !== chr) result += chr;\n }\n\n return result !== 'DGBEFHACIJK';\n});\n\nvar FORCED = FAILS_ON_UNDEFINED || !FAILS_ON_NULL || !STRICT_METHOD || !STABLE_SORT;\n\nvar getSortCompare = function (comparefn) {\n return function (x, y) {\n if (y === undefined) return -1;\n if (x === undefined) return 1;\n if (comparefn !== undefined) return +comparefn(x, y) || 0;\n var xString = toString(x);\n var yString = toString(y);\n return xString === yString ? 0 : xString > yString ? 1 : -1;\n };\n};\n\n// `Array.prototype.sort` method\n// https://tc39.es/ecma262/#sec-array.prototype.sort\n$({ target: 'Array', proto: true, forced: FORCED }, {\n sort: function sort(comparefn) {\n if (comparefn !== undefined) aCallable(comparefn);\n\n var array = toObject(this);\n\n if (STABLE_SORT) return comparefn === undefined ? nativeSort(array) : nativeSort(array, comparefn);\n\n var items = [];\n var arrayLength = lengthOfArrayLike(array);\n var itemsLength, index;\n\n for (index = 0; index < arrayLength; index++) {\n if (index in array) push(items, array[index]);\n }\n\n internalSort(items, getSortCompare(comparefn));\n\n itemsLength = lengthOfArrayLike(items);\n index = 0;\n\n while (index < itemsLength) array[index] = items[index++];\n while (index < arrayLength) deletePropertyOrThrow(array, index++);\n\n return array;\n }\n});\n", "'use strict';\nvar getBuiltIn = require('../internals/get-built-in');\nvar defineBuiltInAccessor = require('../internals/define-built-in-accessor');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\nvar DESCRIPTORS = require('../internals/descriptors');\n\nvar SPECIES = wellKnownSymbol('species');\n\nmodule.exports = function (CONSTRUCTOR_NAME) {\n var Constructor = getBuiltIn(CONSTRUCTOR_NAME);\n\n if (DESCRIPTORS && Constructor && !Constructor[SPECIES]) {\n defineBuiltInAccessor(Constructor, SPECIES, {\n configurable: true,\n get: function () { return this; }\n });\n }\n};\n", "'use strict';\nvar setSpecies = require('../internals/set-species');\n\n// `Array[@@species]` getter\n// https://tc39.es/ecma262/#sec-get-array-@@species\nsetSpecies('Array');\n", "'use strict';\nvar $ = require('../internals/export');\nvar toObject = require('../internals/to-object');\nvar toAbsoluteIndex = require('../internals/to-absolute-index');\nvar toIntegerOrInfinity = require('../internals/to-integer-or-infinity');\nvar lengthOfArrayLike = require('../internals/length-of-array-like');\nvar setArrayLength = require('../internals/array-set-length');\nvar doesNotExceedSafeInteger = require('../internals/does-not-exceed-safe-integer');\nvar arraySpeciesCreate = require('../internals/array-species-create');\nvar createProperty = require('../internals/create-property');\nvar deletePropertyOrThrow = require('../internals/delete-property-or-throw');\nvar arrayMethodHasSpeciesSupport = require('../internals/array-method-has-species-support');\n\nvar HAS_SPECIES_SUPPORT = arrayMethodHasSpeciesSupport('splice');\n\nvar max = Math.max;\nvar min = Math.min;\n\n// `Array.prototype.splice` method\n// https://tc39.es/ecma262/#sec-array.prototype.splice\n// with adding support of @@species\n$({ target: 'Array', proto: true, forced: !HAS_SPECIES_SUPPORT }, {\n splice: function splice(start, deleteCount /* , ...items */) {\n var O = toObject(this);\n var len = lengthOfArrayLike(O);\n var actualStart = toAbsoluteIndex(start, len);\n var argumentsLength = arguments.length;\n var insertCount, actualDeleteCount, A, k, from, to;\n if (argumentsLength === 0) {\n insertCount = actualDeleteCount = 0;\n } else if (argumentsLength === 1) {\n insertCount = 0;\n actualDeleteCount = len - actualStart;\n } else {\n insertCount = argumentsLength - 2;\n actualDeleteCount = min(max(toIntegerOrInfinity(deleteCount), 0), len - actualStart);\n }\n doesNotExceedSafeInteger(len + insertCount - actualDeleteCount);\n A = arraySpeciesCreate(O, actualDeleteCount);\n for (k = 0; k < actualDeleteCount; k++) {\n from = actualStart + k;\n if (from in O) createProperty(A, k, O[from]);\n }\n setArrayLength(A, actualDeleteCount);\n if (insertCount < actualDeleteCount) {\n for (k = actualStart; k < len - actualDeleteCount; k++) {\n from = k + actualDeleteCount;\n to = k + insertCount;\n if (from in O) O[to] = O[from];\n else deletePropertyOrThrow(O, to);\n }\n for (k = len; k > len - actualDeleteCount + insertCount; k--) deletePropertyOrThrow(O, k - 1);\n } else if (insertCount > actualDeleteCount) {\n for (k = len - actualDeleteCount; k > actualStart; k--) {\n from = k + actualDeleteCount - 1;\n to = k + insertCount - 1;\n if (from in O) O[to] = O[from];\n else deletePropertyOrThrow(O, to);\n }\n }\n for (k = 0; k < insertCount; k++) {\n O[k + actualStart] = arguments[k + 2];\n }\n setArrayLength(O, len - actualDeleteCount + insertCount);\n return A;\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar lengthOfArrayLike = require('../internals/length-of-array-like');\nvar toIndexedObject = require('../internals/to-indexed-object');\nvar createProperty = require('../internals/create-property');\nvar addToUnscopables = require('../internals/add-to-unscopables');\n\nvar $Array = Array;\n\n// `Array.prototype.toReversed` method\n// https://tc39.es/ecma262/#sec-array.prototype.toreversed\n$({ target: 'Array', proto: true }, {\n toReversed: function toReversed() {\n var O = toIndexedObject(this);\n var len = lengthOfArrayLike(O);\n var A = new $Array(len);\n var k = 0;\n for (; k < len; k++) createProperty(A, k, O[len - k - 1]);\n return A;\n }\n});\n\naddToUnscopables('toReversed');\n", "'use strict';\nvar lengthOfArrayLike = require('../internals/length-of-array-like');\n\nmodule.exports = function (Constructor, list, $length) {\n var index = 0;\n var length = arguments.length > 2 ? $length : lengthOfArrayLike(list);\n var result = new Constructor(length);\n while (length > index) result[index] = list[index++];\n return result;\n};\n", "'use strict';\nvar globalThis = require('../internals/global-this');\n\nmodule.exports = function (CONSTRUCTOR, METHOD) {\n var Constructor = globalThis[CONSTRUCTOR];\n var Prototype = Constructor && Constructor.prototype;\n return Prototype && Prototype[METHOD];\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar aCallable = require('../internals/a-callable');\nvar toIndexedObject = require('../internals/to-indexed-object');\nvar arrayFromConstructorAndList = require('../internals/array-from-constructor-and-list');\nvar getBuiltInPrototypeMethod = require('../internals/get-built-in-prototype-method');\nvar addToUnscopables = require('../internals/add-to-unscopables');\n\nvar $Array = Array;\nvar sort = uncurryThis(getBuiltInPrototypeMethod('Array', 'sort'));\n\n// `Array.prototype.toSorted` method\n// https://tc39.es/ecma262/#sec-array.prototype.tosorted\n$({ target: 'Array', proto: true }, {\n toSorted: function toSorted(compareFn) {\n if (compareFn !== undefined) aCallable(compareFn);\n var O = toIndexedObject(this);\n var A = arrayFromConstructorAndList($Array, O);\n return sort(A, compareFn);\n }\n});\n\naddToUnscopables('toSorted');\n", "'use strict';\nvar $ = require('../internals/export');\nvar addToUnscopables = require('../internals/add-to-unscopables');\nvar doesNotExceedSafeInteger = require('../internals/does-not-exceed-safe-integer');\nvar lengthOfArrayLike = require('../internals/length-of-array-like');\nvar toAbsoluteIndex = require('../internals/to-absolute-index');\nvar toIndexedObject = require('../internals/to-indexed-object');\nvar toIntegerOrInfinity = require('../internals/to-integer-or-infinity');\nvar createProperty = require('../internals/create-property');\n\nvar $Array = Array;\nvar max = Math.max;\nvar min = Math.min;\n\n// `Array.prototype.toSpliced` method\n// https://tc39.es/ecma262/#sec-array.prototype.tospliced\n$({ target: 'Array', proto: true }, {\n toSpliced: function toSpliced(start, deleteCount /* , ...items */) {\n var O = toIndexedObject(this);\n var len = lengthOfArrayLike(O);\n var actualStart = toAbsoluteIndex(start, len);\n var argumentsLength = arguments.length;\n var k = 0;\n var insertCount, actualDeleteCount, newLen, A;\n if (argumentsLength === 0) {\n insertCount = actualDeleteCount = 0;\n } else if (argumentsLength === 1) {\n insertCount = 0;\n actualDeleteCount = len - actualStart;\n } else {\n insertCount = argumentsLength - 2;\n actualDeleteCount = min(max(toIntegerOrInfinity(deleteCount), 0), len - actualStart);\n }\n newLen = doesNotExceedSafeInteger(len + insertCount - actualDeleteCount);\n A = $Array(newLen);\n\n for (; k < actualStart; k++) createProperty(A, k, O[k]);\n for (; k < actualStart + insertCount; k++) createProperty(A, k, arguments[k - actualStart + 2]);\n for (; k < newLen; k++) createProperty(A, k, O[k + actualDeleteCount - insertCount]);\n\n return A;\n }\n});\n\naddToUnscopables('toSpliced');\n", "'use strict';\n// this method was added to unscopables after implementation\n// in popular engines, so it's moved to a separate module\nvar addToUnscopables = require('../internals/add-to-unscopables');\n\n// https://tc39.es/ecma262/#sec-array.prototype-@@unscopables\naddToUnscopables('flat');\n", "'use strict';\n// this method was added to unscopables after implementation\n// in popular engines, so it's moved to a separate module\nvar addToUnscopables = require('../internals/add-to-unscopables');\n\n// https://tc39.es/ecma262/#sec-array.prototype-@@unscopables\naddToUnscopables('flatMap');\n", "'use strict';\nvar $ = require('../internals/export');\nvar toObject = require('../internals/to-object');\nvar lengthOfArrayLike = require('../internals/length-of-array-like');\nvar setArrayLength = require('../internals/array-set-length');\nvar deletePropertyOrThrow = require('../internals/delete-property-or-throw');\nvar doesNotExceedSafeInteger = require('../internals/does-not-exceed-safe-integer');\n\n// IE8-\nvar INCORRECT_RESULT = [].unshift(0) !== 1;\n\n// V8 ~ Chrome < 71 and Safari <= 15.4, FF < 23 throws InternalError\nvar properErrorOnNonWritableLength = function () {\n try {\n // eslint-disable-next-line es/no-object-defineproperty -- safe\n Object.defineProperty([], 'length', { writable: false }).unshift();\n } catch (error) {\n return error instanceof TypeError;\n }\n};\n\nvar FORCED = INCORRECT_RESULT || !properErrorOnNonWritableLength();\n\n// `Array.prototype.unshift` method\n// https://tc39.es/ecma262/#sec-array.prototype.unshift\n$({ target: 'Array', proto: true, arity: 1, forced: FORCED }, {\n // eslint-disable-next-line no-unused-vars -- required for `.length`\n unshift: function unshift(item) {\n var O = toObject(this);\n var len = lengthOfArrayLike(O);\n var argCount = arguments.length;\n if (argCount) {\n doesNotExceedSafeInteger(len + argCount);\n var k = len;\n while (k--) {\n var to = k + argCount;\n if (k in O) O[to] = O[k];\n else deletePropertyOrThrow(O, to);\n }\n for (var j = 0; j < argCount; j++) {\n O[j] = arguments[j];\n }\n } return setArrayLength(O, len + argCount);\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar lengthOfArrayLike = require('../internals/length-of-array-like');\nvar toIntegerOrInfinity = require('../internals/to-integer-or-infinity');\nvar toIndexedObject = require('../internals/to-indexed-object');\nvar createProperty = require('../internals/create-property');\n\nvar $Array = Array;\nvar $RangeError = RangeError;\n\n// Firefox bug\nvar INCORRECT_EXCEPTION_ON_COERCION_FAIL = (function () {\n try {\n // eslint-disable-next-line es/no-array-prototype-with, no-throw-literal -- needed for testing\n []['with']({ valueOf: function () { throw 4; } }, null);\n } catch (error) {\n return error !== 4;\n }\n})();\n\n// `Array.prototype.with` method\n// https://tc39.es/ecma262/#sec-array.prototype.with\n$({ target: 'Array', proto: true, forced: INCORRECT_EXCEPTION_ON_COERCION_FAIL }, {\n 'with': function (index, value) {\n var O = toIndexedObject(this);\n var len = lengthOfArrayLike(O);\n var relativeIndex = toIntegerOrInfinity(index);\n var actualIndex = relativeIndex < 0 ? len + relativeIndex : relativeIndex;\n if (actualIndex >= len || actualIndex < 0) throw new $RangeError('Incorrect index');\n var A = new $Array(len);\n var k = 0;\n for (; k < len; k++) createProperty(A, k, k === actualIndex ? value : O[k]);\n return A;\n }\n});\n", "'use strict';\n// eslint-disable-next-line es/no-typed-arrays -- safe\nmodule.exports = typeof ArrayBuffer != 'undefined' && typeof DataView != 'undefined';\n", "'use strict';\nvar defineBuiltIn = require('../internals/define-built-in');\n\nmodule.exports = function (target, src, options) {\n for (var key in src) defineBuiltIn(target, key, src[key], options);\n return target;\n};\n", "'use strict';\nvar isPrototypeOf = require('../internals/object-is-prototype-of');\n\nvar $TypeError = TypeError;\n\nmodule.exports = function (it, Prototype) {\n if (isPrototypeOf(Prototype, it)) return it;\n throw new $TypeError('Incorrect invocation');\n};\n", "'use strict';\nvar toIntegerOrInfinity = require('../internals/to-integer-or-infinity');\nvar toLength = require('../internals/to-length');\n\nvar $RangeError = RangeError;\n\n// `ToIndex` abstract operation\n// https://tc39.es/ecma262/#sec-toindex\nmodule.exports = function (it) {\n if (it === undefined) return 0;\n var number = toIntegerOrInfinity(it);\n var length = toLength(number);\n if (number !== length) throw new $RangeError('Wrong length or index');\n return length;\n};\n", "'use strict';\n// `Math.sign` method implementation\n// https://tc39.es/ecma262/#sec-math.sign\n// eslint-disable-next-line es/no-math-sign -- safe\nmodule.exports = Math.sign || function sign(x) {\n var n = +x;\n // eslint-disable-next-line no-self-compare -- NaN check\n return n === 0 || n !== n ? n : n < 0 ? -1 : 1;\n};\n", "'use strict';\nvar EPSILON = 2.220446049250313e-16; // Number.EPSILON\nvar INVERSE_EPSILON = 1 / EPSILON;\n\nmodule.exports = function (n) {\n return n + INVERSE_EPSILON - INVERSE_EPSILON;\n};\n", "'use strict';\nvar sign = require('../internals/math-sign');\nvar roundTiesToEven = require('../internals/math-round-ties-to-even');\n\nvar abs = Math.abs;\n\nvar EPSILON = 2.220446049250313e-16; // Number.EPSILON\n\nmodule.exports = function (x, FLOAT_EPSILON, FLOAT_MAX_VALUE, FLOAT_MIN_VALUE) {\n var n = +x;\n var absolute = abs(n);\n var s = sign(n);\n if (absolute < FLOAT_MIN_VALUE) return s * roundTiesToEven(absolute / FLOAT_MIN_VALUE / FLOAT_EPSILON) * FLOAT_MIN_VALUE * FLOAT_EPSILON;\n var a = (1 + FLOAT_EPSILON / EPSILON) * absolute;\n var result = a - (a - absolute);\n // eslint-disable-next-line no-self-compare -- NaN check\n if (result > FLOAT_MAX_VALUE || result !== result) return s * Infinity;\n return s * result;\n};\n", "'use strict';\nvar floatRound = require('../internals/math-float-round');\n\nvar FLOAT32_EPSILON = 1.1920928955078125e-7; // 2 ** -23;\nvar FLOAT32_MAX_VALUE = 3.4028234663852886e+38; // 2 ** 128 - 2 ** 104\nvar FLOAT32_MIN_VALUE = 1.1754943508222875e-38; // 2 ** -126;\n\n// `Math.fround` method implementation\n// https://tc39.es/ecma262/#sec-math.fround\n// eslint-disable-next-line es/no-math-fround -- safe\nmodule.exports = Math.fround || function fround(x) {\n return floatRound(x, FLOAT32_EPSILON, FLOAT32_MAX_VALUE, FLOAT32_MIN_VALUE);\n};\n", "'use strict';\n// IEEE754 conversions based on https://github.com/feross/ieee754\nvar $Array = Array;\nvar abs = Math.abs;\nvar pow = Math.pow;\nvar floor = Math.floor;\nvar log = Math.log;\nvar LN2 = Math.LN2;\n\nvar pack = function (number, mantissaLength, bytes) {\n var buffer = $Array(bytes);\n var exponentLength = bytes * 8 - mantissaLength - 1;\n var eMax = (1 << exponentLength) - 1;\n var eBias = eMax >> 1;\n var rt = mantissaLength === 23 ? pow(2, -24) - pow(2, -77) : 0;\n var sign = number < 0 || number === 0 && 1 / number < 0 ? 1 : 0;\n var index = 0;\n var exponent, mantissa, c;\n number = abs(number);\n // eslint-disable-next-line no-self-compare -- NaN check\n if (number !== number || number === Infinity) {\n // eslint-disable-next-line no-self-compare -- NaN check\n mantissa = number !== number ? 1 : 0;\n exponent = eMax;\n } else {\n exponent = floor(log(number) / LN2);\n c = pow(2, -exponent);\n if (number * c < 1) {\n exponent--;\n c *= 2;\n }\n if (exponent + eBias >= 1) {\n number += rt / c;\n } else {\n number += rt * pow(2, 1 - eBias);\n }\n if (number * c >= 2) {\n exponent++;\n c /= 2;\n }\n if (exponent + eBias >= eMax) {\n mantissa = 0;\n exponent = eMax;\n } else if (exponent + eBias >= 1) {\n mantissa = (number * c - 1) * pow(2, mantissaLength);\n exponent += eBias;\n } else {\n mantissa = number * pow(2, eBias - 1) * pow(2, mantissaLength);\n exponent = 0;\n }\n }\n while (mantissaLength >= 8) {\n buffer[index++] = mantissa & 255;\n mantissa /= 256;\n mantissaLength -= 8;\n }\n exponent = exponent << mantissaLength | mantissa;\n exponentLength += mantissaLength;\n while (exponentLength > 0) {\n buffer[index++] = exponent & 255;\n exponent /= 256;\n exponentLength -= 8;\n }\n buffer[index - 1] |= sign * 128;\n return buffer;\n};\n\nvar unpack = function (buffer, mantissaLength) {\n var bytes = buffer.length;\n var exponentLength = bytes * 8 - mantissaLength - 1;\n var eMax = (1 << exponentLength) - 1;\n var eBias = eMax >> 1;\n var nBits = exponentLength - 7;\n var index = bytes - 1;\n var sign = buffer[index--];\n var exponent = sign & 127;\n var mantissa;\n sign >>= 7;\n while (nBits > 0) {\n exponent = exponent * 256 + buffer[index--];\n nBits -= 8;\n }\n mantissa = exponent & (1 << -nBits) - 1;\n exponent >>= -nBits;\n nBits += mantissaLength;\n while (nBits > 0) {\n mantissa = mantissa * 256 + buffer[index--];\n nBits -= 8;\n }\n if (exponent === 0) {\n exponent = 1 - eBias;\n } else if (exponent === eMax) {\n return mantissa ? NaN : sign ? -Infinity : Infinity;\n } else {\n mantissa += pow(2, mantissaLength);\n exponent -= eBias;\n } return (sign ? -1 : 1) * mantissa * pow(2, exponent - mantissaLength);\n};\n\nmodule.exports = {\n pack: pack,\n unpack: unpack\n};\n", "'use strict';\nvar globalThis = require('../internals/global-this');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar DESCRIPTORS = require('../internals/descriptors');\nvar NATIVE_ARRAY_BUFFER = require('../internals/array-buffer-basic-detection');\nvar FunctionName = require('../internals/function-name');\nvar createNonEnumerableProperty = require('../internals/create-non-enumerable-property');\nvar defineBuiltInAccessor = require('../internals/define-built-in-accessor');\nvar defineBuiltIns = require('../internals/define-built-ins');\nvar fails = require('../internals/fails');\nvar anInstance = require('../internals/an-instance');\nvar toIntegerOrInfinity = require('../internals/to-integer-or-infinity');\nvar toIndex = require('../internals/to-index');\nvar fround = require('../internals/math-fround');\nvar IEEE754 = require('../internals/ieee754');\nvar getPrototypeOf = require('../internals/object-get-prototype-of');\nvar setPrototypeOf = require('../internals/object-set-prototype-of');\nvar arrayFill = require('../internals/array-fill');\nvar arraySlice = require('../internals/array-slice');\nvar inheritIfRequired = require('../internals/inherit-if-required');\nvar copyConstructorProperties = require('../internals/copy-constructor-properties');\nvar setToStringTag = require('../internals/set-to-string-tag');\nvar InternalStateModule = require('../internals/internal-state');\n\nvar PROPER_FUNCTION_NAME = FunctionName.PROPER;\nvar CONFIGURABLE_FUNCTION_NAME = FunctionName.CONFIGURABLE;\nvar ARRAY_BUFFER = 'ArrayBuffer';\nvar DATA_VIEW = 'DataView';\nvar PROTOTYPE = 'prototype';\nvar WRONG_LENGTH = 'Wrong length';\nvar WRONG_INDEX = 'Wrong index';\nvar getInternalArrayBufferState = InternalStateModule.getterFor(ARRAY_BUFFER);\nvar getInternalDataViewState = InternalStateModule.getterFor(DATA_VIEW);\nvar setInternalState = InternalStateModule.set;\nvar NativeArrayBuffer = globalThis[ARRAY_BUFFER];\nvar $ArrayBuffer = NativeArrayBuffer;\nvar ArrayBufferPrototype = $ArrayBuffer && $ArrayBuffer[PROTOTYPE];\nvar $DataView = globalThis[DATA_VIEW];\nvar DataViewPrototype = $DataView && $DataView[PROTOTYPE];\nvar ObjectPrototype = Object.prototype;\nvar Array = globalThis.Array;\nvar RangeError = globalThis.RangeError;\nvar fill = uncurryThis(arrayFill);\nvar reverse = uncurryThis([].reverse);\n\nvar packIEEE754 = IEEE754.pack;\nvar unpackIEEE754 = IEEE754.unpack;\n\nvar packInt8 = function (number) {\n return [number & 0xFF];\n};\n\nvar packInt16 = function (number) {\n return [number & 0xFF, number >> 8 & 0xFF];\n};\n\nvar packInt32 = function (number) {\n return [number & 0xFF, number >> 8 & 0xFF, number >> 16 & 0xFF, number >> 24 & 0xFF];\n};\n\nvar unpackInt32 = function (buffer) {\n return buffer[3] << 24 | buffer[2] << 16 | buffer[1] << 8 | buffer[0];\n};\n\nvar packFloat32 = function (number) {\n return packIEEE754(fround(number), 23, 4);\n};\n\nvar packFloat64 = function (number) {\n return packIEEE754(number, 52, 8);\n};\n\nvar addGetter = function (Constructor, key, getInternalState) {\n defineBuiltInAccessor(Constructor[PROTOTYPE], key, {\n configurable: true,\n get: function () {\n return getInternalState(this)[key];\n }\n });\n};\n\nvar get = function (view, count, index, isLittleEndian) {\n var store = getInternalDataViewState(view);\n var intIndex = toIndex(index);\n var boolIsLittleEndian = !!isLittleEndian;\n if (intIndex + count > store.byteLength) throw new RangeError(WRONG_INDEX);\n var bytes = store.bytes;\n var start = intIndex + store.byteOffset;\n var pack = arraySlice(bytes, start, start + count);\n return boolIsLittleEndian ? pack : reverse(pack);\n};\n\nvar set = function (view, count, index, conversion, value, isLittleEndian) {\n var store = getInternalDataViewState(view);\n var intIndex = toIndex(index);\n var pack = conversion(+value);\n var boolIsLittleEndian = !!isLittleEndian;\n if (intIndex + count > store.byteLength) throw new RangeError(WRONG_INDEX);\n var bytes = store.bytes;\n var start = intIndex + store.byteOffset;\n for (var i = 0; i < count; i++) bytes[start + i] = pack[boolIsLittleEndian ? i : count - i - 1];\n};\n\nif (!NATIVE_ARRAY_BUFFER) {\n $ArrayBuffer = function ArrayBuffer(length) {\n anInstance(this, ArrayBufferPrototype);\n var byteLength = toIndex(length);\n setInternalState(this, {\n type: ARRAY_BUFFER,\n bytes: fill(Array(byteLength), 0),\n byteLength: byteLength\n });\n if (!DESCRIPTORS) {\n this.byteLength = byteLength;\n this.detached = false;\n }\n };\n\n ArrayBufferPrototype = $ArrayBuffer[PROTOTYPE];\n\n $DataView = function DataView(buffer, byteOffset, byteLength) {\n anInstance(this, DataViewPrototype);\n anInstance(buffer, ArrayBufferPrototype);\n var bufferState = getInternalArrayBufferState(buffer);\n var bufferLength = bufferState.byteLength;\n var offset = toIntegerOrInfinity(byteOffset);\n if (offset < 0 || offset > bufferLength) throw new RangeError('Wrong offset');\n byteLength = byteLength === undefined ? bufferLength - offset : toIndex(byteLength);\n if (offset + byteLength > bufferLength) throw new RangeError(WRONG_LENGTH);\n setInternalState(this, {\n type: DATA_VIEW,\n buffer: buffer,\n byteLength: byteLength,\n byteOffset: offset,\n bytes: bufferState.bytes\n });\n if (!DESCRIPTORS) {\n this.buffer = buffer;\n this.byteLength = byteLength;\n this.byteOffset = offset;\n }\n };\n\n DataViewPrototype = $DataView[PROTOTYPE];\n\n if (DESCRIPTORS) {\n addGetter($ArrayBuffer, 'byteLength', getInternalArrayBufferState);\n addGetter($DataView, 'buffer', getInternalDataViewState);\n addGetter($DataView, 'byteLength', getInternalDataViewState);\n addGetter($DataView, 'byteOffset', getInternalDataViewState);\n }\n\n defineBuiltIns(DataViewPrototype, {\n getInt8: function getInt8(byteOffset) {\n return get(this, 1, byteOffset)[0] << 24 >> 24;\n },\n getUint8: function getUint8(byteOffset) {\n return get(this, 1, byteOffset)[0];\n },\n getInt16: function getInt16(byteOffset /* , littleEndian */) {\n var bytes = get(this, 2, byteOffset, arguments.length > 1 ? arguments[1] : false);\n return (bytes[1] << 8 | bytes[0]) << 16 >> 16;\n },\n getUint16: function getUint16(byteOffset /* , littleEndian */) {\n var bytes = get(this, 2, byteOffset, arguments.length > 1 ? arguments[1] : false);\n return bytes[1] << 8 | bytes[0];\n },\n getInt32: function getInt32(byteOffset /* , littleEndian */) {\n return unpackInt32(get(this, 4, byteOffset, arguments.length > 1 ? arguments[1] : false));\n },\n getUint32: function getUint32(byteOffset /* , littleEndian */) {\n return unpackInt32(get(this, 4, byteOffset, arguments.length > 1 ? arguments[1] : false)) >>> 0;\n },\n getFloat32: function getFloat32(byteOffset /* , littleEndian */) {\n return unpackIEEE754(get(this, 4, byteOffset, arguments.length > 1 ? arguments[1] : false), 23);\n },\n getFloat64: function getFloat64(byteOffset /* , littleEndian */) {\n return unpackIEEE754(get(this, 8, byteOffset, arguments.length > 1 ? arguments[1] : false), 52);\n },\n setInt8: function setInt8(byteOffset, value) {\n set(this, 1, byteOffset, packInt8, value);\n },\n setUint8: function setUint8(byteOffset, value) {\n set(this, 1, byteOffset, packInt8, value);\n },\n setInt16: function setInt16(byteOffset, value /* , littleEndian */) {\n set(this, 2, byteOffset, packInt16, value, arguments.length > 2 ? arguments[2] : false);\n },\n setUint16: function setUint16(byteOffset, value /* , littleEndian */) {\n set(this, 2, byteOffset, packInt16, value, arguments.length > 2 ? arguments[2] : false);\n },\n setInt32: function setInt32(byteOffset, value /* , littleEndian */) {\n set(this, 4, byteOffset, packInt32, value, arguments.length > 2 ? arguments[2] : false);\n },\n setUint32: function setUint32(byteOffset, value /* , littleEndian */) {\n set(this, 4, byteOffset, packInt32, value, arguments.length > 2 ? arguments[2] : false);\n },\n setFloat32: function setFloat32(byteOffset, value /* , littleEndian */) {\n set(this, 4, byteOffset, packFloat32, value, arguments.length > 2 ? arguments[2] : false);\n },\n setFloat64: function setFloat64(byteOffset, value /* , littleEndian */) {\n set(this, 8, byteOffset, packFloat64, value, arguments.length > 2 ? arguments[2] : false);\n }\n });\n} else {\n var INCORRECT_ARRAY_BUFFER_NAME = PROPER_FUNCTION_NAME && NativeArrayBuffer.name !== ARRAY_BUFFER;\n /* eslint-disable no-new, sonarjs/inconsistent-function-call -- required for testing */\n if (!fails(function () {\n NativeArrayBuffer(1);\n }) || !fails(function () {\n new NativeArrayBuffer(-1);\n }) || fails(function () {\n new NativeArrayBuffer();\n new NativeArrayBuffer(1.5);\n new NativeArrayBuffer(NaN);\n return NativeArrayBuffer.length !== 1 || INCORRECT_ARRAY_BUFFER_NAME && !CONFIGURABLE_FUNCTION_NAME;\n })) {\n /* eslint-enable no-new, sonarjs/inconsistent-function-call -- required for testing */\n $ArrayBuffer = function ArrayBuffer(length) {\n anInstance(this, ArrayBufferPrototype);\n return inheritIfRequired(new NativeArrayBuffer(toIndex(length)), this, $ArrayBuffer);\n };\n\n $ArrayBuffer[PROTOTYPE] = ArrayBufferPrototype;\n\n ArrayBufferPrototype.constructor = $ArrayBuffer;\n\n copyConstructorProperties($ArrayBuffer, NativeArrayBuffer);\n } else if (INCORRECT_ARRAY_BUFFER_NAME && CONFIGURABLE_FUNCTION_NAME) {\n createNonEnumerableProperty(NativeArrayBuffer, 'name', ARRAY_BUFFER);\n }\n\n // WebKit bug - the same parent prototype for typed arrays and data view\n if (setPrototypeOf && getPrototypeOf(DataViewPrototype) !== ObjectPrototype) {\n setPrototypeOf(DataViewPrototype, ObjectPrototype);\n }\n\n // iOS Safari 7.x bug\n var testView = new $DataView(new $ArrayBuffer(2));\n var $setInt8 = uncurryThis(DataViewPrototype.setInt8);\n testView.setInt8(0, 2147483648);\n testView.setInt8(1, 2147483649);\n if (testView.getInt8(0) || !testView.getInt8(1)) defineBuiltIns(DataViewPrototype, {\n setInt8: function setInt8(byteOffset, value) {\n $setInt8(this, byteOffset, value << 24 >> 24);\n },\n setUint8: function setUint8(byteOffset, value) {\n $setInt8(this, byteOffset, value << 24 >> 24);\n }\n }, { unsafe: true });\n}\n\nsetToStringTag($ArrayBuffer, ARRAY_BUFFER);\nsetToStringTag($DataView, DATA_VIEW);\n\nmodule.exports = {\n ArrayBuffer: $ArrayBuffer,\n DataView: $DataView\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar globalThis = require('../internals/global-this');\nvar arrayBufferModule = require('../internals/array-buffer');\nvar setSpecies = require('../internals/set-species');\n\nvar ARRAY_BUFFER = 'ArrayBuffer';\nvar ArrayBuffer = arrayBufferModule[ARRAY_BUFFER];\nvar NativeArrayBuffer = globalThis[ARRAY_BUFFER];\n\n// `ArrayBuffer` constructor\n// https://tc39.es/ecma262/#sec-arraybuffer-constructor\n$({ global: true, constructor: true, forced: NativeArrayBuffer !== ArrayBuffer }, {\n ArrayBuffer: ArrayBuffer\n});\n\nsetSpecies(ARRAY_BUFFER);\n", "'use strict';\nvar NATIVE_ARRAY_BUFFER = require('../internals/array-buffer-basic-detection');\nvar DESCRIPTORS = require('../internals/descriptors');\nvar globalThis = require('../internals/global-this');\nvar isCallable = require('../internals/is-callable');\nvar isObject = require('../internals/is-object');\nvar hasOwn = require('../internals/has-own-property');\nvar classof = require('../internals/classof');\nvar tryToString = require('../internals/try-to-string');\nvar createNonEnumerableProperty = require('../internals/create-non-enumerable-property');\nvar defineBuiltIn = require('../internals/define-built-in');\nvar defineBuiltInAccessor = require('../internals/define-built-in-accessor');\nvar isPrototypeOf = require('../internals/object-is-prototype-of');\nvar getPrototypeOf = require('../internals/object-get-prototype-of');\nvar setPrototypeOf = require('../internals/object-set-prototype-of');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\nvar uid = require('../internals/uid');\nvar InternalStateModule = require('../internals/internal-state');\n\nvar enforceInternalState = InternalStateModule.enforce;\nvar getInternalState = InternalStateModule.get;\nvar Int8Array = globalThis.Int8Array;\nvar Int8ArrayPrototype = Int8Array && Int8Array.prototype;\nvar Uint8ClampedArray = globalThis.Uint8ClampedArray;\nvar Uint8ClampedArrayPrototype = Uint8ClampedArray && Uint8ClampedArray.prototype;\nvar TypedArray = Int8Array && getPrototypeOf(Int8Array);\nvar TypedArrayPrototype = Int8ArrayPrototype && getPrototypeOf(Int8ArrayPrototype);\nvar ObjectPrototype = Object.prototype;\nvar TypeError = globalThis.TypeError;\n\nvar TO_STRING_TAG = wellKnownSymbol('toStringTag');\nvar TYPED_ARRAY_TAG = uid('TYPED_ARRAY_TAG');\nvar TYPED_ARRAY_CONSTRUCTOR = 'TypedArrayConstructor';\n// Fixing native typed arrays in Opera Presto crashes the browser, see #595\nvar NATIVE_ARRAY_BUFFER_VIEWS = NATIVE_ARRAY_BUFFER && !!setPrototypeOf && classof(globalThis.opera) !== 'Opera';\nvar TYPED_ARRAY_TAG_REQUIRED = false;\nvar NAME, Constructor, Prototype;\n\nvar TypedArrayConstructorsList = {\n Int8Array: 1,\n Uint8Array: 1,\n Uint8ClampedArray: 1,\n Int16Array: 2,\n Uint16Array: 2,\n Int32Array: 4,\n Uint32Array: 4,\n Float32Array: 4,\n Float64Array: 8\n};\n\nvar BigIntArrayConstructorsList = {\n BigInt64Array: 8,\n BigUint64Array: 8\n};\n\nvar isView = function isView(it) {\n if (!isObject(it)) return false;\n var klass = classof(it);\n return klass === 'DataView'\n || hasOwn(TypedArrayConstructorsList, klass)\n || hasOwn(BigIntArrayConstructorsList, klass);\n};\n\nvar getTypedArrayConstructor = function (it) {\n var proto = getPrototypeOf(it);\n if (!isObject(proto)) return;\n var state = getInternalState(proto);\n return (state && hasOwn(state, TYPED_ARRAY_CONSTRUCTOR)) ? state[TYPED_ARRAY_CONSTRUCTOR] : getTypedArrayConstructor(proto);\n};\n\nvar isTypedArray = function (it) {\n if (!isObject(it)) return false;\n var klass = classof(it);\n return hasOwn(TypedArrayConstructorsList, klass)\n || hasOwn(BigIntArrayConstructorsList, klass);\n};\n\nvar aTypedArray = function (it) {\n if (isTypedArray(it)) return it;\n throw new TypeError('Target is not a typed array');\n};\n\nvar aTypedArrayConstructor = function (C) {\n if (isCallable(C) && (!setPrototypeOf || isPrototypeOf(TypedArray, C))) return C;\n throw new TypeError(tryToString(C) + ' is not a typed array constructor');\n};\n\nvar exportTypedArrayMethod = function (KEY, property, forced, options) {\n if (!DESCRIPTORS) return;\n if (forced) for (var ARRAY in TypedArrayConstructorsList) {\n var TypedArrayConstructor = globalThis[ARRAY];\n if (TypedArrayConstructor && hasOwn(TypedArrayConstructor.prototype, KEY)) try {\n delete TypedArrayConstructor.prototype[KEY];\n } catch (error) {\n // old WebKit bug - some methods are non-configurable\n try {\n TypedArrayConstructor.prototype[KEY] = property;\n } catch (error2) { /* empty */ }\n }\n }\n if (!TypedArrayPrototype[KEY] || forced) {\n defineBuiltIn(TypedArrayPrototype, KEY, forced ? property\n : NATIVE_ARRAY_BUFFER_VIEWS && Int8ArrayPrototype[KEY] || property, options);\n }\n};\n\nvar exportTypedArrayStaticMethod = function (KEY, property, forced) {\n var ARRAY, TypedArrayConstructor;\n if (!DESCRIPTORS) return;\n if (setPrototypeOf) {\n if (forced) for (ARRAY in TypedArrayConstructorsList) {\n TypedArrayConstructor = globalThis[ARRAY];\n if (TypedArrayConstructor && hasOwn(TypedArrayConstructor, KEY)) try {\n delete TypedArrayConstructor[KEY];\n } catch (error) { /* empty */ }\n }\n if (!TypedArray[KEY] || forced) {\n // V8 ~ Chrome 49-50 `%TypedArray%` methods are non-writable non-configurable\n try {\n return defineBuiltIn(TypedArray, KEY, forced ? property : NATIVE_ARRAY_BUFFER_VIEWS && TypedArray[KEY] || property);\n } catch (error) { /* empty */ }\n } else return;\n }\n for (ARRAY in TypedArrayConstructorsList) {\n TypedArrayConstructor = globalThis[ARRAY];\n if (TypedArrayConstructor && (!TypedArrayConstructor[KEY] || forced)) {\n defineBuiltIn(TypedArrayConstructor, KEY, property);\n }\n }\n};\n\nfor (NAME in TypedArrayConstructorsList) {\n Constructor = globalThis[NAME];\n Prototype = Constructor && Constructor.prototype;\n if (Prototype) enforceInternalState(Prototype)[TYPED_ARRAY_CONSTRUCTOR] = Constructor;\n else NATIVE_ARRAY_BUFFER_VIEWS = false;\n}\n\nfor (NAME in BigIntArrayConstructorsList) {\n Constructor = globalThis[NAME];\n Prototype = Constructor && Constructor.prototype;\n if (Prototype) enforceInternalState(Prototype)[TYPED_ARRAY_CONSTRUCTOR] = Constructor;\n}\n\n// WebKit bug - typed arrays constructors prototype is Object.prototype\nif (!NATIVE_ARRAY_BUFFER_VIEWS || !isCallable(TypedArray) || TypedArray === Function.prototype) {\n // eslint-disable-next-line no-shadow -- safe\n TypedArray = function TypedArray() {\n throw new TypeError('Incorrect invocation');\n };\n if (NATIVE_ARRAY_BUFFER_VIEWS) for (NAME in TypedArrayConstructorsList) {\n if (globalThis[NAME]) setPrototypeOf(globalThis[NAME], TypedArray);\n }\n}\n\nif (!NATIVE_ARRAY_BUFFER_VIEWS || !TypedArrayPrototype || TypedArrayPrototype === ObjectPrototype) {\n TypedArrayPrototype = TypedArray.prototype;\n if (NATIVE_ARRAY_BUFFER_VIEWS) for (NAME in TypedArrayConstructorsList) {\n if (globalThis[NAME]) setPrototypeOf(globalThis[NAME].prototype, TypedArrayPrototype);\n }\n}\n\n// WebKit bug - one more object in Uint8ClampedArray prototype chain\nif (NATIVE_ARRAY_BUFFER_VIEWS && getPrototypeOf(Uint8ClampedArrayPrototype) !== TypedArrayPrototype) {\n setPrototypeOf(Uint8ClampedArrayPrototype, TypedArrayPrototype);\n}\n\nif (DESCRIPTORS && !hasOwn(TypedArrayPrototype, TO_STRING_TAG)) {\n TYPED_ARRAY_TAG_REQUIRED = true;\n defineBuiltInAccessor(TypedArrayPrototype, TO_STRING_TAG, {\n configurable: true,\n get: function () {\n return isObject(this) ? this[TYPED_ARRAY_TAG] : undefined;\n }\n });\n for (NAME in TypedArrayConstructorsList) if (globalThis[NAME]) {\n createNonEnumerableProperty(globalThis[NAME].prototype, TYPED_ARRAY_TAG, NAME);\n }\n}\n\nmodule.exports = {\n NATIVE_ARRAY_BUFFER_VIEWS: NATIVE_ARRAY_BUFFER_VIEWS,\n TYPED_ARRAY_TAG: TYPED_ARRAY_TAG_REQUIRED && TYPED_ARRAY_TAG,\n aTypedArray: aTypedArray,\n aTypedArrayConstructor: aTypedArrayConstructor,\n exportTypedArrayMethod: exportTypedArrayMethod,\n exportTypedArrayStaticMethod: exportTypedArrayStaticMethod,\n getTypedArrayConstructor: getTypedArrayConstructor,\n isView: isView,\n isTypedArray: isTypedArray,\n TypedArray: TypedArray,\n TypedArrayPrototype: TypedArrayPrototype\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar ArrayBufferViewCore = require('../internals/array-buffer-view-core');\n\nvar NATIVE_ARRAY_BUFFER_VIEWS = ArrayBufferViewCore.NATIVE_ARRAY_BUFFER_VIEWS;\n\n// `ArrayBuffer.isView` method\n// https://tc39.es/ecma262/#sec-arraybuffer.isview\n$({ target: 'ArrayBuffer', stat: true, forced: !NATIVE_ARRAY_BUFFER_VIEWS }, {\n isView: ArrayBufferViewCore.isView\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar uncurryThis = require('../internals/function-uncurry-this-clause');\nvar fails = require('../internals/fails');\nvar ArrayBufferModule = require('../internals/array-buffer');\nvar anObject = require('../internals/an-object');\nvar toAbsoluteIndex = require('../internals/to-absolute-index');\nvar toLength = require('../internals/to-length');\n\nvar ArrayBuffer = ArrayBufferModule.ArrayBuffer;\nvar DataView = ArrayBufferModule.DataView;\nvar DataViewPrototype = DataView.prototype;\nvar nativeArrayBufferSlice = uncurryThis(ArrayBuffer.prototype.slice);\nvar getUint8 = uncurryThis(DataViewPrototype.getUint8);\nvar setUint8 = uncurryThis(DataViewPrototype.setUint8);\n\nvar INCORRECT_SLICE = fails(function () {\n return !new ArrayBuffer(2).slice(1, undefined).byteLength;\n});\n\n// `ArrayBuffer.prototype.slice` method\n// https://tc39.es/ecma262/#sec-arraybuffer.prototype.slice\n$({ target: 'ArrayBuffer', proto: true, unsafe: true, forced: INCORRECT_SLICE }, {\n slice: function slice(start, end) {\n if (nativeArrayBufferSlice && end === undefined) {\n return nativeArrayBufferSlice(anObject(this), start); // FF fix\n }\n var length = anObject(this).byteLength;\n var first = toAbsoluteIndex(start, length);\n var fin = toAbsoluteIndex(end === undefined ? length : end, length);\n var result = new ArrayBuffer(toLength(fin - first));\n var viewSource = new DataView(this);\n var viewTarget = new DataView(result);\n var index = 0;\n while (first < fin) {\n setUint8(viewTarget, index++, getUint8(viewSource, first++));\n } return result;\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar ArrayBufferModule = require('../internals/array-buffer');\nvar NATIVE_ARRAY_BUFFER = require('../internals/array-buffer-basic-detection');\n\n// `DataView` constructor\n// https://tc39.es/ecma262/#sec-dataview-constructor\n$({ global: true, constructor: true, forced: !NATIVE_ARRAY_BUFFER }, {\n DataView: ArrayBufferModule.DataView\n});\n", "'use strict';\n// TODO: Remove this module from `core-js@4` since it's replaced to module below\nrequire('../modules/es.data-view.constructor');\n", "'use strict';\nvar $ = require('../internals/export');\nvar uncurryThis = require('../internals/function-uncurry-this');\n\nvar pow = Math.pow;\n\nvar EXP_MASK16 = 31; // 2 ** 5 - 1\nvar SIGNIFICAND_MASK16 = 1023; // 2 ** 10 - 1\nvar MIN_SUBNORMAL16 = pow(2, -24); // 2 ** -10 * 2 ** -14\nvar SIGNIFICAND_DENOM16 = 0.0009765625; // 2 ** -10\n\nvar unpackFloat16 = function (bytes) {\n var sign = bytes >>> 15;\n var exponent = bytes >>> 10 & EXP_MASK16;\n var significand = bytes & SIGNIFICAND_MASK16;\n if (exponent === EXP_MASK16) return significand === 0 ? sign === 0 ? Infinity : -Infinity : NaN;\n if (exponent === 0) return significand * (sign === 0 ? MIN_SUBNORMAL16 : -MIN_SUBNORMAL16);\n return pow(2, exponent - 15) * (sign === 0 ? 1 + significand * SIGNIFICAND_DENOM16 : -1 - significand * SIGNIFICAND_DENOM16);\n};\n\n// eslint-disable-next-line es/no-typed-arrays -- safe\nvar getUint16 = uncurryThis(DataView.prototype.getUint16);\n\n// `DataView.prototype.getFloat16` method\n// https://tc39.es/ecma262/#sec-dataview.prototype.getfloat16\n$({ target: 'DataView', proto: true }, {\n getFloat16: function getFloat16(byteOffset /* , littleEndian */) {\n return unpackFloat16(getUint16(this, byteOffset, arguments.length > 1 ? arguments[1] : false));\n }\n});\n", "'use strict';\nvar classof = require('../internals/classof');\n\nvar $TypeError = TypeError;\n\nmodule.exports = function (argument) {\n if (classof(argument) === 'DataView') return argument;\n throw new $TypeError('Argument is not a DataView');\n};\n", "'use strict';\nvar log = Math.log;\nvar LN2 = Math.LN2;\n\n// `Math.log2` method\n// https://tc39.es/ecma262/#sec-math.log2\n// eslint-disable-next-line es/no-math-log2 -- safe\nmodule.exports = Math.log2 || function log2(x) {\n return log(x) / LN2;\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar aDataView = require('../internals/a-data-view');\nvar toIndex = require('../internals/to-index');\n// TODO: Replace with module dependency in `core-js@4`\nvar log2 = require('../internals/math-log2');\nvar roundTiesToEven = require('../internals/math-round-ties-to-even');\n\nvar floor = Math.floor;\nvar pow = Math.pow;\n\nvar MIN_INFINITY16 = 65520; // (2 - 2 ** -11) * 2 ** 15\nvar MIN_NORMAL16 = 0.000061005353927612305; // (1 - 2 ** -11) * 2 ** -14\nvar REC_MIN_SUBNORMAL16 = 16777216; // 2 ** 10 * 2 ** 14\nvar REC_SIGNIFICAND_DENOM16 = 1024; // 2 ** 10;\n\nvar packFloat16 = function (value) {\n // eslint-disable-next-line no-self-compare -- NaN check\n if (value !== value) return 0x7E00; // NaN\n if (value === 0) return (1 / value === -Infinity) << 15; // +0 or -0\n\n var neg = value < 0;\n if (neg) value = -value;\n if (value >= MIN_INFINITY16) return neg << 15 | 0x7C00; // Infinity\n if (value < MIN_NORMAL16) return neg << 15 | roundTiesToEven(value * REC_MIN_SUBNORMAL16); // subnormal\n\n // normal\n var exponent = floor(log2(value));\n if (exponent === -15) {\n // we round from a value between 2 ** -15 * (1 + 1022/1024) (the largest subnormal) and 2 ** -14 * (1 + 0/1024) (the smallest normal)\n // to the latter (former impossible because of the subnormal check above)\n return neg << 15 | REC_SIGNIFICAND_DENOM16;\n }\n var significand = roundTiesToEven((value * pow(2, -exponent) - 1) * REC_SIGNIFICAND_DENOM16);\n if (significand === REC_SIGNIFICAND_DENOM16) {\n // we round from a value between 2 ** n * (1 + 1023/1024) and 2 ** (n + 1) * (1 + 0/1024) to the latter\n return neg << 15 | exponent + 16 << 10;\n }\n return neg << 15 | exponent + 15 << 10 | significand;\n};\n\n// eslint-disable-next-line es/no-typed-arrays -- safe\nvar setUint16 = uncurryThis(DataView.prototype.setUint16);\n\n// `DataView.prototype.setFloat16` method\n// https://tc39.es/ecma262/#sec-dataview.prototype.setfloat16\n$({ target: 'DataView', proto: true }, {\n setFloat16: function setFloat16(byteOffset, value /* , littleEndian */) {\n setUint16(\n aDataView(this),\n toIndex(byteOffset),\n packFloat16(+value),\n arguments.length > 2 ? arguments[2] : false\n );\n }\n});\n", "'use strict';\nvar globalThis = require('../internals/global-this');\nvar uncurryThisAccessor = require('../internals/function-uncurry-this-accessor');\nvar classof = require('../internals/classof-raw');\n\nvar ArrayBuffer = globalThis.ArrayBuffer;\nvar TypeError = globalThis.TypeError;\n\n// Includes\n// - Perform ? RequireInternalSlot(O, [[ArrayBufferData]]).\n// - If IsSharedArrayBuffer(O) is true, throw a TypeError exception.\nmodule.exports = ArrayBuffer && uncurryThisAccessor(ArrayBuffer.prototype, 'byteLength', 'get') || function (O) {\n if (classof(O) !== 'ArrayBuffer') throw new TypeError('ArrayBuffer expected');\n return O.byteLength;\n};\n", "'use strict';\nvar globalThis = require('../internals/global-this');\nvar NATIVE_ARRAY_BUFFER = require('../internals/array-buffer-basic-detection');\nvar arrayBufferByteLength = require('../internals/array-buffer-byte-length');\n\nvar DataView = globalThis.DataView;\n\nmodule.exports = function (O) {\n if (!NATIVE_ARRAY_BUFFER || arrayBufferByteLength(O) !== 0) return false;\n try {\n // eslint-disable-next-line no-new -- thrower\n new DataView(O);\n return false;\n } catch (error) {\n return true;\n }\n};\n", "'use strict';\nvar DESCRIPTORS = require('../internals/descriptors');\nvar defineBuiltInAccessor = require('../internals/define-built-in-accessor');\nvar isDetached = require('../internals/array-buffer-is-detached');\n\nvar ArrayBufferPrototype = ArrayBuffer.prototype;\n\n// `ArrayBuffer.prototype.detached` getter\n// https://tc39.es/ecma262/#sec-get-arraybuffer.prototype.detached\nif (DESCRIPTORS && !('detached' in ArrayBufferPrototype)) {\n defineBuiltInAccessor(ArrayBufferPrototype, 'detached', {\n configurable: true,\n get: function detached() {\n return isDetached(this);\n }\n });\n}\n", "'use strict';\nvar isDetached = require('../internals/array-buffer-is-detached');\n\nvar $TypeError = TypeError;\n\nmodule.exports = function (it) {\n if (isDetached(it)) throw new $TypeError('ArrayBuffer is detached');\n return it;\n};\n", "'use strict';\nvar globalThis = require('../internals/global-this');\nvar IS_NODE = require('../internals/environment-is-node');\n\nmodule.exports = function (name) {\n if (IS_NODE) {\n try {\n return globalThis.process.getBuiltinModule(name);\n } catch (error) { /* empty */ }\n try {\n // eslint-disable-next-line no-new-func -- safe\n return Function('return require(\"' + name + '\")')();\n } catch (error) { /* empty */ }\n }\n};\n", "'use strict';\nvar globalThis = require('../internals/global-this');\nvar fails = require('../internals/fails');\nvar V8 = require('../internals/environment-v8-version');\nvar ENVIRONMENT = require('../internals/environment');\n\nvar structuredClone = globalThis.structuredClone;\n\nmodule.exports = !!structuredClone && !fails(function () {\n // prevent V8 ArrayBufferDetaching protector cell invalidation and performance degradation\n // https://github.com/zloirock/core-js/issues/679\n if ((ENVIRONMENT === 'DENO' && V8 > 92) || (ENVIRONMENT === 'NODE' && V8 > 94) || (ENVIRONMENT === 'BROWSER' && V8 > 97)) return false;\n var buffer = new ArrayBuffer(8);\n var clone = structuredClone(buffer, { transfer: [buffer] });\n return buffer.byteLength !== 0 || clone.byteLength !== 8;\n});\n", "'use strict';\nvar globalThis = require('../internals/global-this');\nvar getBuiltInNodeModule = require('../internals/get-built-in-node-module');\nvar PROPER_STRUCTURED_CLONE_TRANSFER = require('../internals/structured-clone-proper-transfer');\n\nvar structuredClone = globalThis.structuredClone;\nvar $ArrayBuffer = globalThis.ArrayBuffer;\nvar $MessageChannel = globalThis.MessageChannel;\nvar detach = false;\nvar WorkerThreads, channel, buffer, $detach;\n\nif (PROPER_STRUCTURED_CLONE_TRANSFER) {\n detach = function (transferable) {\n structuredClone(transferable, { transfer: [transferable] });\n };\n} else if ($ArrayBuffer) try {\n if (!$MessageChannel) {\n WorkerThreads = getBuiltInNodeModule('worker_threads');\n if (WorkerThreads) $MessageChannel = WorkerThreads.MessageChannel;\n }\n\n if ($MessageChannel) {\n channel = new $MessageChannel();\n buffer = new $ArrayBuffer(2);\n\n $detach = function (transferable) {\n channel.port1.postMessage(null, [transferable]);\n };\n\n if (buffer.byteLength === 2) {\n $detach(buffer);\n if (buffer.byteLength === 0) detach = $detach;\n }\n }\n} catch (error) { /* empty */ }\n\nmodule.exports = detach;\n", "'use strict';\nvar globalThis = require('../internals/global-this');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar uncurryThisAccessor = require('../internals/function-uncurry-this-accessor');\nvar toIndex = require('../internals/to-index');\nvar notDetached = require('../internals/array-buffer-not-detached');\nvar arrayBufferByteLength = require('../internals/array-buffer-byte-length');\nvar detachTransferable = require('../internals/detach-transferable');\nvar PROPER_STRUCTURED_CLONE_TRANSFER = require('../internals/structured-clone-proper-transfer');\n\nvar structuredClone = globalThis.structuredClone;\nvar ArrayBuffer = globalThis.ArrayBuffer;\nvar DataView = globalThis.DataView;\nvar max = Math.max;\nvar min = Math.min;\nvar ArrayBufferPrototype = ArrayBuffer.prototype;\nvar DataViewPrototype = DataView.prototype;\nvar slice = uncurryThis(ArrayBufferPrototype.slice);\nvar isResizable = uncurryThisAccessor(ArrayBufferPrototype, 'resizable', 'get');\nvar maxByteLength = uncurryThisAccessor(ArrayBufferPrototype, 'maxByteLength', 'get');\nvar getInt8 = uncurryThis(DataViewPrototype.getInt8);\nvar setInt8 = uncurryThis(DataViewPrototype.setInt8);\n\nmodule.exports = (PROPER_STRUCTURED_CLONE_TRANSFER || detachTransferable) && function (arrayBuffer, newLength, preserveResizability) {\n var byteLength = arrayBufferByteLength(arrayBuffer);\n var newByteLength = newLength === undefined ? byteLength : toIndex(newLength);\n var fixedLength = !isResizable || !isResizable(arrayBuffer);\n var newBuffer;\n notDetached(arrayBuffer);\n if (PROPER_STRUCTURED_CLONE_TRANSFER) {\n arrayBuffer = structuredClone(arrayBuffer, { transfer: [arrayBuffer] });\n if (byteLength === newByteLength && (preserveResizability || fixedLength)) return arrayBuffer;\n }\n if (byteLength >= newByteLength && (!preserveResizability || fixedLength)) {\n newBuffer = slice(arrayBuffer, 0, newByteLength);\n } else {\n var options = preserveResizability && !fixedLength && maxByteLength\n ? { maxByteLength: max(newByteLength, maxByteLength(arrayBuffer)) }\n : undefined;\n newBuffer = new ArrayBuffer(newByteLength, options);\n var a = new DataView(arrayBuffer);\n var b = new DataView(newBuffer);\n var copyLength = min(newByteLength, byteLength);\n for (var i = 0; i < copyLength; i++) setInt8(b, i, getInt8(a, i));\n }\n if (!PROPER_STRUCTURED_CLONE_TRANSFER) detachTransferable(arrayBuffer);\n return newBuffer;\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar $transfer = require('../internals/array-buffer-transfer');\n\n// `ArrayBuffer.prototype.transfer` method\n// https://tc39.es/ecma262/#sec-arraybuffer.prototype.transfer\nif ($transfer) $({ target: 'ArrayBuffer', proto: true }, {\n transfer: function transfer() {\n return $transfer(this, arguments.length ? arguments[0] : undefined, true);\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar $transfer = require('../internals/array-buffer-transfer');\n\n// `ArrayBuffer.prototype.transferToFixedLength` method\n// https://tc39.es/ecma262/#sec-arraybuffer.prototype.transfertofixedlength\nif ($transfer) $({ target: 'ArrayBuffer', proto: true }, {\n transferToFixedLength: function transferToFixedLength() {\n return $transfer(this, arguments.length ? arguments[0] : undefined, false);\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar fails = require('../internals/fails');\n\n// IE8- non-standard case\nvar FORCED = fails(function () {\n // eslint-disable-next-line es/no-date-prototype-getyear-setyear -- detection\n return new Date(16e11).getYear() !== 120;\n});\n\nvar getFullYear = uncurryThis(Date.prototype.getFullYear);\n\n// `Date.prototype.getYear` method\n// https://tc39.es/ecma262/#sec-date.prototype.getyear\n$({ target: 'Date', proto: true, forced: FORCED }, {\n getYear: function getYear() {\n return getFullYear(this) - 1900;\n }\n});\n", "'use strict';\n// TODO: Remove from `core-js@4`\nvar $ = require('../internals/export');\nvar uncurryThis = require('../internals/function-uncurry-this');\n\nvar $Date = Date;\nvar thisTimeValue = uncurryThis($Date.prototype.getTime);\n\n// `Date.now` method\n// https://tc39.es/ecma262/#sec-date.now\n$({ target: 'Date', stat: true }, {\n now: function now() {\n return thisTimeValue(new $Date());\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar toIntegerOrInfinity = require('../internals/to-integer-or-infinity');\n\nvar DatePrototype = Date.prototype;\nvar thisTimeValue = uncurryThis(DatePrototype.getTime);\nvar setFullYear = uncurryThis(DatePrototype.setFullYear);\n\n// `Date.prototype.setYear` method\n// https://tc39.es/ecma262/#sec-date.prototype.setyear\n$({ target: 'Date', proto: true }, {\n setYear: function setYear(year) {\n // validate\n thisTimeValue(this);\n var y = +year;\n // eslint-disable-next-line no-self-compare -- NaN check\n if (y !== y) return setFullYear(this, y);\n var yi = toIntegerOrInfinity(y);\n var yyyy = yi >= 0 && yi <= 99 ? yi + 1900 : yi;\n return setFullYear(this, yyyy);\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\n\n// `Date.prototype.toGMTString` method\n// https://tc39.es/ecma262/#sec-date.prototype.togmtstring\n$({ target: 'Date', proto: true }, {\n toGMTString: Date.prototype.toUTCString\n});\n", "'use strict';\nvar toIntegerOrInfinity = require('../internals/to-integer-or-infinity');\nvar toString = require('../internals/to-string');\nvar requireObjectCoercible = require('../internals/require-object-coercible');\n\nvar $RangeError = RangeError;\nvar floor = Math.floor;\n\n// `String.prototype.repeat` method implementation\n// https://tc39.es/ecma262/#sec-string.prototype.repeat\nmodule.exports = function repeat(count) {\n var str = toString(requireObjectCoercible(this));\n var result = '';\n var n = toIntegerOrInfinity(count);\n if (n < 0 || n === Infinity) throw new $RangeError('Wrong number of repetitions');\n for (;n > 0; (n = floor(n / 2)) && (str += str)) if (n % 2) result += str;\n return result;\n};\n", "'use strict';\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar toLength = require('../internals/to-length');\nvar toString = require('../internals/to-string');\nvar $repeat = require('../internals/string-repeat');\nvar requireObjectCoercible = require('../internals/require-object-coercible');\n\nvar repeat = uncurryThis($repeat);\nvar stringSlice = uncurryThis(''.slice);\nvar ceil = Math.ceil;\n\n// `String.prototype.{ padStart, padEnd }` methods implementation\nvar createMethod = function (IS_END) {\n return function ($this, maxLength, fillString) {\n var S = toString(requireObjectCoercible($this));\n var intMaxLength = toLength(maxLength);\n var stringLength = S.length;\n if (intMaxLength <= stringLength) return S;\n var fillStr = fillString === undefined ? ' ' : toString(fillString);\n var fillLen, stringFiller;\n if (fillStr === '') return S;\n fillLen = intMaxLength - stringLength;\n stringFiller = repeat(fillStr, ceil(fillLen / fillStr.length));\n if (stringFiller.length > fillLen) stringFiller = stringSlice(stringFiller, 0, fillLen);\n return IS_END ? S + stringFiller : stringFiller + S;\n };\n};\n\nmodule.exports = {\n // `String.prototype.padStart` method\n // https://tc39.es/ecma262/#sec-string.prototype.padstart\n start: createMethod(false),\n // `String.prototype.padEnd` method\n // https://tc39.es/ecma262/#sec-string.prototype.padend\n end: createMethod(true)\n};\n", "'use strict';\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar fails = require('../internals/fails');\nvar padStart = require('../internals/string-pad').start;\n\nvar $RangeError = RangeError;\nvar $isFinite = isFinite;\nvar abs = Math.abs;\nvar DatePrototype = Date.prototype;\nvar nativeDateToISOString = DatePrototype.toISOString;\nvar thisTimeValue = uncurryThis(DatePrototype.getTime);\nvar getUTCDate = uncurryThis(DatePrototype.getUTCDate);\nvar getUTCFullYear = uncurryThis(DatePrototype.getUTCFullYear);\nvar getUTCHours = uncurryThis(DatePrototype.getUTCHours);\nvar getUTCMilliseconds = uncurryThis(DatePrototype.getUTCMilliseconds);\nvar getUTCMinutes = uncurryThis(DatePrototype.getUTCMinutes);\nvar getUTCMonth = uncurryThis(DatePrototype.getUTCMonth);\nvar getUTCSeconds = uncurryThis(DatePrototype.getUTCSeconds);\n\n// `Date.prototype.toISOString` method implementation\n// https://tc39.es/ecma262/#sec-date.prototype.toisostring\n// PhantomJS / old WebKit fails here:\nmodule.exports = (fails(function () {\n return nativeDateToISOString.call(new Date(-5e13 - 1)) !== '0385-07-25T07:06:39.999Z';\n}) || !fails(function () {\n nativeDateToISOString.call(new Date(NaN));\n})) ? function toISOString() {\n if (!$isFinite(thisTimeValue(this))) throw new $RangeError('Invalid time value');\n var date = this;\n var year = getUTCFullYear(date);\n var milliseconds = getUTCMilliseconds(date);\n var sign = year < 0 ? '-' : year > 9999 ? '+' : '';\n return sign + padStart(abs(year), sign ? 6 : 4, 0) +\n '-' + padStart(getUTCMonth(date) + 1, 2, 0) +\n '-' + padStart(getUTCDate(date), 2, 0) +\n 'T' + padStart(getUTCHours(date), 2, 0) +\n ':' + padStart(getUTCMinutes(date), 2, 0) +\n ':' + padStart(getUTCSeconds(date), 2, 0) +\n '.' + padStart(milliseconds, 3, 0) +\n 'Z';\n} : nativeDateToISOString;\n", "'use strict';\nvar $ = require('../internals/export');\nvar toISOString = require('../internals/date-to-iso-string');\n\n// `Date.prototype.toISOString` method\n// https://tc39.es/ecma262/#sec-date.prototype.toisostring\n// PhantomJS / old WebKit has a broken implementations\n$({ target: 'Date', proto: true, forced: Date.prototype.toISOString !== toISOString }, {\n toISOString: toISOString\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar fails = require('../internals/fails');\nvar toObject = require('../internals/to-object');\nvar toPrimitive = require('../internals/to-primitive');\n\nvar FORCED = fails(function () {\n return new Date(NaN).toJSON() !== null\n || Date.prototype.toJSON.call({ toISOString: function () { return 1; } }) !== 1;\n});\n\n// `Date.prototype.toJSON` method\n// https://tc39.es/ecma262/#sec-date.prototype.tojson\n$({ target: 'Date', proto: true, arity: 1, forced: FORCED }, {\n // eslint-disable-next-line no-unused-vars -- required for `.length`\n toJSON: function toJSON(key) {\n var O = toObject(this);\n var pv = toPrimitive(O, 'number');\n return typeof pv == 'number' && !isFinite(pv) ? null : O.toISOString();\n }\n});\n", "'use strict';\nvar anObject = require('../internals/an-object');\nvar ordinaryToPrimitive = require('../internals/ordinary-to-primitive');\n\nvar $TypeError = TypeError;\n\n// `Date.prototype[@@toPrimitive](hint)` method implementation\n// https://tc39.es/ecma262/#sec-date.prototype-@@toprimitive\nmodule.exports = function (hint) {\n anObject(this);\n if (hint === 'string' || hint === 'default') hint = 'string';\n else if (hint !== 'number') throw new $TypeError('Incorrect hint');\n return ordinaryToPrimitive(this, hint);\n};\n", "'use strict';\nvar hasOwn = require('../internals/has-own-property');\nvar defineBuiltIn = require('../internals/define-built-in');\nvar dateToPrimitive = require('../internals/date-to-primitive');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\n\nvar TO_PRIMITIVE = wellKnownSymbol('toPrimitive');\nvar DatePrototype = Date.prototype;\n\n// `Date.prototype[@@toPrimitive]` method\n// https://tc39.es/ecma262/#sec-date.prototype-@@toprimitive\nif (!hasOwn(DatePrototype, TO_PRIMITIVE)) {\n defineBuiltIn(DatePrototype, TO_PRIMITIVE, dateToPrimitive);\n}\n", "'use strict';\n// TODO: Remove from `core-js@4`\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar defineBuiltIn = require('../internals/define-built-in');\n\nvar DatePrototype = Date.prototype;\nvar INVALID_DATE = 'Invalid Date';\nvar TO_STRING = 'toString';\nvar nativeDateToString = uncurryThis(DatePrototype[TO_STRING]);\nvar thisTimeValue = uncurryThis(DatePrototype.getTime);\n\n// `Date.prototype.toString` method\n// https://tc39.es/ecma262/#sec-date.prototype.tostring\nif (String(new Date(NaN)) !== INVALID_DATE) {\n defineBuiltIn(DatePrototype, TO_STRING, function toString() {\n var value = thisTimeValue(this);\n // eslint-disable-next-line no-self-compare -- NaN check\n return value === value ? nativeDateToString(this) : INVALID_DATE;\n });\n}\n", "'use strict';\nvar getBuiltIn = require('../internals/get-built-in');\nvar call = require('../internals/function-call');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar bind = require('../internals/function-bind-context');\nvar anObject = require('../internals/an-object');\nvar aCallable = require('../internals/a-callable');\nvar isNullOrUndefined = require('../internals/is-null-or-undefined');\nvar getMethod = require('../internals/get-method');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\n\nvar ASYNC_DISPOSE = wellKnownSymbol('asyncDispose');\nvar DISPOSE = wellKnownSymbol('dispose');\n\nvar push = uncurryThis([].push);\n\n// `GetDisposeMethod` abstract operation\n// https://tc39.es/proposal-explicit-resource-management/#sec-getdisposemethod\nvar getDisposeMethod = function (V, hint) {\n if (hint === 'async-dispose') {\n var method = getMethod(V, ASYNC_DISPOSE);\n if (method !== undefined) return method;\n method = getMethod(V, DISPOSE);\n if (method === undefined) return method;\n return function () {\n var O = this;\n var Promise = getBuiltIn('Promise');\n return new Promise(function (resolve) {\n call(method, O);\n resolve(undefined);\n });\n };\n } return getMethod(V, DISPOSE);\n};\n\n// `CreateDisposableResource` abstract operation\n// https://tc39.es/proposal-explicit-resource-management/#sec-createdisposableresource\nvar createDisposableResource = function (V, hint, method) {\n if (arguments.length < 3 && !isNullOrUndefined(V)) {\n method = aCallable(getDisposeMethod(anObject(V), hint));\n }\n\n return method === undefined ? function () {\n return undefined;\n } : bind(method, V);\n};\n\n// `AddDisposableResource` abstract operation\n// https://tc39.es/proposal-explicit-resource-management/#sec-adddisposableresource\nmodule.exports = function (disposable, V, hint, method) {\n var resource;\n if (arguments.length < 4) {\n // When `V`` is either `null` or `undefined` and hint is `async-dispose`,\n // we record that the resource was evaluated to ensure we will still perform an `Await` when resources are later disposed.\n if (isNullOrUndefined(V) && hint === 'sync-dispose') return;\n resource = createDisposableResource(V, hint);\n } else {\n resource = createDisposableResource(undefined, hint, method);\n }\n\n push(disposable.stack, resource);\n};\n", "'use strict';\n// https://github.com/tc39/proposal-explicit-resource-management\nvar $ = require('../internals/export');\nvar DESCRIPTORS = require('../internals/descriptors');\nvar getBuiltIn = require('../internals/get-built-in');\nvar aCallable = require('../internals/a-callable');\nvar anInstance = require('../internals/an-instance');\nvar defineBuiltIn = require('../internals/define-built-in');\nvar defineBuiltIns = require('../internals/define-built-ins');\nvar defineBuiltInAccessor = require('../internals/define-built-in-accessor');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\nvar InternalStateModule = require('../internals/internal-state');\nvar addDisposableResource = require('../internals/add-disposable-resource');\n\nvar SuppressedError = getBuiltIn('SuppressedError');\nvar $ReferenceError = ReferenceError;\n\nvar DISPOSE = wellKnownSymbol('dispose');\nvar TO_STRING_TAG = wellKnownSymbol('toStringTag');\n\nvar DISPOSABLE_STACK = 'DisposableStack';\nvar setInternalState = InternalStateModule.set;\nvar getDisposableStackInternalState = InternalStateModule.getterFor(DISPOSABLE_STACK);\n\nvar HINT = 'sync-dispose';\nvar DISPOSED = 'disposed';\nvar PENDING = 'pending';\n\nvar getPendingDisposableStackInternalState = function (stack) {\n var internalState = getDisposableStackInternalState(stack);\n if (internalState.state === DISPOSED) throw new $ReferenceError(DISPOSABLE_STACK + ' already disposed');\n return internalState;\n};\n\nvar $DisposableStack = function DisposableStack() {\n setInternalState(anInstance(this, DisposableStackPrototype), {\n type: DISPOSABLE_STACK,\n state: PENDING,\n stack: []\n });\n\n if (!DESCRIPTORS) this.disposed = false;\n};\n\nvar DisposableStackPrototype = $DisposableStack.prototype;\n\ndefineBuiltIns(DisposableStackPrototype, {\n dispose: function dispose() {\n var internalState = getDisposableStackInternalState(this);\n if (internalState.state === DISPOSED) return;\n internalState.state = DISPOSED;\n if (!DESCRIPTORS) this.disposed = true;\n var stack = internalState.stack;\n var i = stack.length;\n var thrown = false;\n var suppressed;\n while (i) {\n var disposeMethod = stack[--i];\n stack[i] = null;\n try {\n disposeMethod();\n } catch (errorResult) {\n if (thrown) {\n suppressed = new SuppressedError(errorResult, suppressed);\n } else {\n thrown = true;\n suppressed = errorResult;\n }\n }\n }\n internalState.stack = null;\n if (thrown) throw suppressed;\n },\n use: function use(value) {\n addDisposableResource(getPendingDisposableStackInternalState(this), value, HINT);\n return value;\n },\n adopt: function adopt(value, onDispose) {\n var internalState = getPendingDisposableStackInternalState(this);\n aCallable(onDispose);\n addDisposableResource(internalState, undefined, HINT, function () {\n onDispose(value);\n });\n return value;\n },\n defer: function defer(onDispose) {\n var internalState = getPendingDisposableStackInternalState(this);\n aCallable(onDispose);\n addDisposableResource(internalState, undefined, HINT, onDispose);\n },\n move: function move() {\n var internalState = getPendingDisposableStackInternalState(this);\n var newDisposableStack = new $DisposableStack();\n getDisposableStackInternalState(newDisposableStack).stack = internalState.stack;\n internalState.stack = [];\n internalState.state = DISPOSED;\n if (!DESCRIPTORS) this.disposed = true;\n return newDisposableStack;\n }\n});\n\nif (DESCRIPTORS) defineBuiltInAccessor(DisposableStackPrototype, 'disposed', {\n configurable: true,\n get: function disposed() {\n return getDisposableStackInternalState(this).state === DISPOSED;\n }\n});\n\ndefineBuiltIn(DisposableStackPrototype, DISPOSE, DisposableStackPrototype.dispose, { name: 'dispose' });\ndefineBuiltIn(DisposableStackPrototype, TO_STRING_TAG, DISPOSABLE_STACK, { nonWritable: true });\n\n$({ global: true, constructor: true }, {\n DisposableStack: $DisposableStack\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar toString = require('../internals/to-string');\n\nvar charAt = uncurryThis(''.charAt);\nvar charCodeAt = uncurryThis(''.charCodeAt);\nvar exec = uncurryThis(/./.exec);\nvar numberToString = uncurryThis(1.1.toString);\nvar toUpperCase = uncurryThis(''.toUpperCase);\n\nvar raw = /[\\w*+\\-./@]/;\n\nvar hex = function (code, length) {\n var result = numberToString(code, 16);\n while (result.length < length) result = '0' + result;\n return result;\n};\n\n// `escape` method\n// https://tc39.es/ecma262/#sec-escape-string\n$({ global: true }, {\n escape: function escape(string) {\n var str = toString(string);\n var result = '';\n var length = str.length;\n var index = 0;\n var chr, code;\n while (index < length) {\n chr = charAt(str, index++);\n if (exec(raw, chr)) {\n result += chr;\n } else {\n code = charCodeAt(chr, 0);\n if (code < 256) {\n result += '%' + toUpperCase(hex(code, 2));\n } else {\n result += '%u' + toUpperCase(hex(code, 4));\n }\n }\n } return result;\n }\n});\n", "'use strict';\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar aCallable = require('../internals/a-callable');\nvar isObject = require('../internals/is-object');\nvar hasOwn = require('../internals/has-own-property');\nvar arraySlice = require('../internals/array-slice');\nvar NATIVE_BIND = require('../internals/function-bind-native');\n\nvar $Function = Function;\nvar concat = uncurryThis([].concat);\nvar join = uncurryThis([].join);\nvar factories = {};\n\nvar construct = function (C, argsLength, args) {\n if (!hasOwn(factories, argsLength)) {\n var list = [];\n var i = 0;\n for (; i < argsLength; i++) list[i] = 'a[' + i + ']';\n factories[argsLength] = $Function('C,a', 'return new C(' + join(list, ',') + ')');\n } return factories[argsLength](C, args);\n};\n\n// `Function.prototype.bind` method implementation\n// https://tc39.es/ecma262/#sec-function.prototype.bind\n// eslint-disable-next-line es/no-function-prototype-bind -- detection\nmodule.exports = NATIVE_BIND ? $Function.bind : function bind(that /* , ...args */) {\n var F = aCallable(this);\n var Prototype = F.prototype;\n var partArgs = arraySlice(arguments, 1);\n var boundFunction = function bound(/* args... */) {\n var args = concat(partArgs, arraySlice(arguments));\n return this instanceof boundFunction ? construct(F, args.length, args) : F.apply(that, args);\n };\n if (isObject(Prototype)) boundFunction.prototype = Prototype;\n return boundFunction;\n};\n", "'use strict';\n// TODO: Remove from `core-js@4`\nvar $ = require('../internals/export');\nvar bind = require('../internals/function-bind');\n\n// `Function.prototype.bind` method\n// https://tc39.es/ecma262/#sec-function.prototype.bind\n// eslint-disable-next-line es/no-function-prototype-bind -- detection\n$({ target: 'Function', proto: true, forced: Function.bind !== bind }, {\n bind: bind\n});\n", "'use strict';\nvar isCallable = require('../internals/is-callable');\nvar isObject = require('../internals/is-object');\nvar definePropertyModule = require('../internals/object-define-property');\nvar isPrototypeOf = require('../internals/object-is-prototype-of');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\nvar makeBuiltIn = require('../internals/make-built-in');\n\nvar HAS_INSTANCE = wellKnownSymbol('hasInstance');\nvar FunctionPrototype = Function.prototype;\n\n// `Function.prototype[@@hasInstance]` method\n// https://tc39.es/ecma262/#sec-function.prototype-@@hasinstance\nif (!(HAS_INSTANCE in FunctionPrototype)) {\n definePropertyModule.f(FunctionPrototype, HAS_INSTANCE, { value: makeBuiltIn(function (O) {\n if (!isCallable(this) || !isObject(O)) return false;\n var P = this.prototype;\n return isObject(P) ? isPrototypeOf(P, O) : O instanceof this;\n }, HAS_INSTANCE) });\n}\n", "'use strict';\nvar DESCRIPTORS = require('../internals/descriptors');\nvar FUNCTION_NAME_EXISTS = require('../internals/function-name').EXISTS;\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar defineBuiltInAccessor = require('../internals/define-built-in-accessor');\n\nvar FunctionPrototype = Function.prototype;\nvar functionToString = uncurryThis(FunctionPrototype.toString);\nvar nameRE = /function\\b(?:\\s|\\/\\*[\\S\\s]*?\\*\\/|\\/\\/[^\\n\\r]*[\\n\\r]+)*([^\\s(/]*)/;\nvar regExpExec = uncurryThis(nameRE.exec);\nvar NAME = 'name';\n\n// Function instances `.name` property\n// https://tc39.es/ecma262/#sec-function-instances-name\nif (DESCRIPTORS && !FUNCTION_NAME_EXISTS) {\n defineBuiltInAccessor(FunctionPrototype, NAME, {\n configurable: true,\n get: function () {\n try {\n return regExpExec(nameRE, functionToString(this))[1];\n } catch (error) {\n return '';\n }\n }\n });\n}\n", "'use strict';\nvar $ = require('../internals/export');\nvar globalThis = require('../internals/global-this');\n\n// `globalThis` object\n// https://tc39.es/ecma262/#sec-globalthis\n$({ global: true, forced: globalThis.globalThis !== globalThis }, {\n globalThis: globalThis\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar globalThis = require('../internals/global-this');\nvar anInstance = require('../internals/an-instance');\nvar anObject = require('../internals/an-object');\nvar isCallable = require('../internals/is-callable');\nvar getPrototypeOf = require('../internals/object-get-prototype-of');\nvar defineBuiltInAccessor = require('../internals/define-built-in-accessor');\nvar createProperty = require('../internals/create-property');\nvar fails = require('../internals/fails');\nvar hasOwn = require('../internals/has-own-property');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\nvar IteratorPrototype = require('../internals/iterators-core').IteratorPrototype;\nvar DESCRIPTORS = require('../internals/descriptors');\nvar IS_PURE = require('../internals/is-pure');\n\nvar CONSTRUCTOR = 'constructor';\nvar ITERATOR = 'Iterator';\nvar TO_STRING_TAG = wellKnownSymbol('toStringTag');\n\nvar $TypeError = TypeError;\nvar NativeIterator = globalThis[ITERATOR];\n\n// FF56- have non-standard global helper `Iterator`\nvar FORCED = IS_PURE\n || !isCallable(NativeIterator)\n || NativeIterator.prototype !== IteratorPrototype\n // FF44- non-standard `Iterator` passes previous tests\n || !fails(function () { NativeIterator({}); });\n\nvar IteratorConstructor = function Iterator() {\n anInstance(this, IteratorPrototype);\n if (getPrototypeOf(this) === IteratorPrototype) throw new $TypeError('Abstract class Iterator not directly constructable');\n};\n\nvar defineIteratorPrototypeAccessor = function (key, value) {\n if (DESCRIPTORS) {\n defineBuiltInAccessor(IteratorPrototype, key, {\n configurable: true,\n get: function () {\n return value;\n },\n set: function (replacement) {\n anObject(this);\n if (this === IteratorPrototype) throw new $TypeError(\"You can't redefine this property\");\n if (hasOwn(this, key)) this[key] = replacement;\n else createProperty(this, key, replacement);\n }\n });\n } else IteratorPrototype[key] = value;\n};\n\nif (!hasOwn(IteratorPrototype, TO_STRING_TAG)) defineIteratorPrototypeAccessor(TO_STRING_TAG, ITERATOR);\n\nif (FORCED || !hasOwn(IteratorPrototype, CONSTRUCTOR) || IteratorPrototype[CONSTRUCTOR] === Object) {\n defineIteratorPrototypeAccessor(CONSTRUCTOR, IteratorConstructor);\n}\n\nIteratorConstructor.prototype = IteratorPrototype;\n\n// `Iterator` constructor\n// https://tc39.es/ecma262/#sec-iterator\n$({ global: true, constructor: true, forced: FORCED }, {\n Iterator: IteratorConstructor\n});\n", "'use strict';\nvar iteratorClose = require('../internals/iterator-close');\n\nmodule.exports = function (iters, kind, value) {\n for (var i = iters.length - 1; i >= 0; i--) {\n if (iters[i] === undefined) continue;\n try {\n value = iteratorClose(iters[i].iterator, kind, value);\n } catch (error) {\n kind = 'throw';\n value = error;\n }\n }\n if (kind === 'throw') throw value;\n return value;\n};\n", "'use strict';\nvar call = require('../internals/function-call');\nvar create = require('../internals/object-create');\nvar createNonEnumerableProperty = require('../internals/create-non-enumerable-property');\nvar defineBuiltIns = require('../internals/define-built-ins');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\nvar InternalStateModule = require('../internals/internal-state');\nvar getMethod = require('../internals/get-method');\nvar IteratorPrototype = require('../internals/iterators-core').IteratorPrototype;\nvar createIterResultObject = require('../internals/create-iter-result-object');\nvar iteratorClose = require('../internals/iterator-close');\nvar iteratorCloseAll = require('../internals/iterator-close-all');\n\nvar TO_STRING_TAG = wellKnownSymbol('toStringTag');\nvar ITERATOR_HELPER = 'IteratorHelper';\nvar WRAP_FOR_VALID_ITERATOR = 'WrapForValidIterator';\nvar NORMAL = 'normal';\nvar THROW = 'throw';\nvar setInternalState = InternalStateModule.set;\n\nvar createIteratorProxyPrototype = function (IS_ITERATOR) {\n var getInternalState = InternalStateModule.getterFor(IS_ITERATOR ? WRAP_FOR_VALID_ITERATOR : ITERATOR_HELPER);\n\n return defineBuiltIns(create(IteratorPrototype), {\n next: function next() {\n var state = getInternalState(this);\n // for simplification:\n // for `%WrapForValidIteratorPrototype%.next` or with `state.returnHandlerResult` our `nextHandler` returns `IterResultObject`\n // for `%IteratorHelperPrototype%.next` - just a value\n if (IS_ITERATOR) return state.nextHandler();\n if (state.done) return createIterResultObject(undefined, true);\n try {\n var result = state.nextHandler();\n return state.returnHandlerResult ? result : createIterResultObject(result, state.done);\n } catch (error) {\n state.done = true;\n throw error;\n }\n },\n 'return': function () {\n var state = getInternalState(this);\n var iterator = state.iterator;\n var done = state.done;\n state.done = true;\n if (IS_ITERATOR) {\n var returnMethod = getMethod(iterator, 'return');\n return returnMethod ? call(returnMethod, iterator) : createIterResultObject(undefined, true);\n }\n if (done) return createIterResultObject(undefined, true);\n if (state.inner) try {\n iteratorClose(state.inner.iterator, NORMAL);\n } catch (error) {\n return iteratorClose(iterator, THROW, error);\n }\n if (state.openIters) try {\n iteratorCloseAll(state.openIters, NORMAL);\n } catch (error) {\n if (iterator) return iteratorClose(iterator, THROW, error);\n throw error;\n }\n if (iterator) iteratorClose(iterator, NORMAL);\n return createIterResultObject(undefined, true);\n }\n });\n};\n\nvar WrapForValidIteratorPrototype = createIteratorProxyPrototype(true);\nvar IteratorHelperPrototype = createIteratorProxyPrototype(false);\n\ncreateNonEnumerableProperty(IteratorHelperPrototype, TO_STRING_TAG, 'Iterator Helper');\n\nmodule.exports = function (nextHandler, IS_ITERATOR, RETURN_HANDLER_RESULT) {\n var IteratorProxy = function Iterator(record, state) {\n if (state) {\n state.iterator = record.iterator;\n state.next = record.next;\n } else state = record;\n state.type = IS_ITERATOR ? WRAP_FOR_VALID_ITERATOR : ITERATOR_HELPER;\n state.returnHandlerResult = !!RETURN_HANDLER_RESULT;\n state.nextHandler = nextHandler;\n state.counter = 0;\n state.done = false;\n setInternalState(this, state);\n };\n\n IteratorProxy.prototype = IS_ITERATOR ? WrapForValidIteratorPrototype : IteratorHelperPrototype;\n\n return IteratorProxy;\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar call = require('../internals/function-call');\nvar aCallable = require('../internals/a-callable');\nvar anObject = require('../internals/an-object');\nvar getIteratorMethod = require('../internals/get-iterator-method');\nvar createIteratorProxy = require('../internals/iterator-create-proxy');\nvar IS_PURE = require('../internals/is-pure');\n\nvar $Array = Array;\n\nvar IteratorProxy = createIteratorProxy(function () {\n while (true) {\n var iterator = this.iterator;\n if (!iterator) {\n var iterableIndex = this.nextIterableIndex++;\n var iterables = this.iterables;\n if (iterableIndex >= iterables.length) {\n this.done = true;\n return;\n }\n var entry = iterables[iterableIndex];\n this.iterables[iterableIndex] = null;\n iterator = this.iterator = anObject(call(entry.method, entry.iterable));\n this.next = iterator.next;\n }\n var result = anObject(call(this.next, iterator));\n if (result.done) {\n this.iterator = null;\n this.next = null;\n continue;\n }\n return result.value;\n }\n});\n\n// `Iterator.concat` method\n// https://tc39.es/ecma262/#sec-iterator.concat\n$({ target: 'Iterator', stat: true, forced: IS_PURE }, {\n concat: function concat() {\n var length = arguments.length;\n var iterables = $Array(length);\n for (var index = 0; index < length; index++) {\n var item = anObject(arguments[index]);\n iterables[index] = {\n iterable: item,\n method: aCallable(getIteratorMethod(item))\n };\n }\n return new IteratorProxy({\n iterables: iterables,\n nextIterableIndex: 0,\n iterator: null,\n next: null\n });\n }\n});\n", "'use strict';\n// https://github.com/tc39/proposal-explicit-resource-management\nvar call = require('../internals/function-call');\nvar defineBuiltIn = require('../internals/define-built-in');\nvar getMethod = require('../internals/get-method');\nvar hasOwn = require('../internals/has-own-property');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\nvar IteratorPrototype = require('../internals/iterators-core').IteratorPrototype;\n\nvar DISPOSE = wellKnownSymbol('dispose');\n\nif (!hasOwn(IteratorPrototype, DISPOSE)) {\n defineBuiltIn(IteratorPrototype, DISPOSE, function () {\n var $return = getMethod(this, 'return');\n if ($return) call($return, this);\n });\n}\n", "'use strict';\n// `GetIteratorDirect(obj)` abstract operation\n// https://tc39.es/ecma262/#sec-getiteratordirect\nmodule.exports = function (obj) {\n return {\n iterator: obj,\n next: obj.next,\n done: false\n };\n};\n", "'use strict';\nvar $RangeError = RangeError;\n\nmodule.exports = function (it) {\n // eslint-disable-next-line no-self-compare -- NaN check\n if (it === it) return it;\n throw new $RangeError('NaN is not allowed');\n};\n", "'use strict';\nvar toIntegerOrInfinity = require('../internals/to-integer-or-infinity');\n\nvar $RangeError = RangeError;\n\nmodule.exports = function (it) {\n var result = toIntegerOrInfinity(it);\n if (result < 0) throw new $RangeError(\"The argument can't be less than 0\");\n return result;\n};\n", "'use strict';\n// Should throw an error on invalid iterator\n// https://issues.chromium.org/issues/336839115\nmodule.exports = function (methodName, argument) {\n // eslint-disable-next-line es/no-iterator -- required for testing\n var method = typeof Iterator == 'function' && Iterator.prototype[methodName];\n if (method) try {\n method.call({ next: null }, argument).next();\n } catch (error) {\n return true;\n }\n};\n", "'use strict';\nvar globalThis = require('../internals/global-this');\n\n// https://github.com/tc39/ecma262/pull/3467\nmodule.exports = function (METHOD_NAME, ExpectedError) {\n var Iterator = globalThis.Iterator;\n var IteratorPrototype = Iterator && Iterator.prototype;\n var method = IteratorPrototype && IteratorPrototype[METHOD_NAME];\n\n var CLOSED = false;\n\n if (method) try {\n method.call({\n next: function () { return { done: true }; },\n 'return': function () { CLOSED = true; }\n }, -1);\n } catch (error) {\n // https://bugs.webkit.org/show_bug.cgi?id=291195\n if (!(error instanceof ExpectedError)) CLOSED = false;\n }\n\n if (!CLOSED) return method;\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar call = require('../internals/function-call');\nvar anObject = require('../internals/an-object');\nvar getIteratorDirect = require('../internals/get-iterator-direct');\nvar notANaN = require('../internals/not-a-nan');\nvar toPositiveInteger = require('../internals/to-positive-integer');\nvar iteratorClose = require('../internals/iterator-close');\nvar createIteratorProxy = require('../internals/iterator-create-proxy');\nvar iteratorHelperThrowsOnInvalidIterator = require('../internals/iterator-helper-throws-on-invalid-iterator');\nvar iteratorHelperWithoutClosingOnEarlyError = require('../internals/iterator-helper-without-closing-on-early-error');\nvar IS_PURE = require('../internals/is-pure');\n\nvar DROP_WITHOUT_THROWING_ON_INVALID_ITERATOR = !IS_PURE && !iteratorHelperThrowsOnInvalidIterator('drop', 0);\nvar dropWithoutClosingOnEarlyError = !IS_PURE && !DROP_WITHOUT_THROWING_ON_INVALID_ITERATOR\n && iteratorHelperWithoutClosingOnEarlyError('drop', RangeError);\n\nvar FORCED = IS_PURE || DROP_WITHOUT_THROWING_ON_INVALID_ITERATOR || dropWithoutClosingOnEarlyError;\n\nvar IteratorProxy = createIteratorProxy(function () {\n var iterator = this.iterator;\n var next = this.next;\n var result, done;\n while (this.remaining) {\n this.remaining--;\n result = anObject(call(next, iterator));\n done = this.done = !!result.done;\n if (done) return;\n }\n result = anObject(call(next, iterator));\n done = this.done = !!result.done;\n if (!done) return result.value;\n});\n\n// `Iterator.prototype.drop` method\n// https://tc39.es/ecma262/#sec-iterator.prototype.drop\n$({ target: 'Iterator', proto: true, real: true, forced: FORCED }, {\n drop: function drop(limit) {\n anObject(this);\n var remaining;\n try {\n remaining = toPositiveInteger(notANaN(+limit));\n } catch (error) {\n iteratorClose(this, 'throw', error);\n }\n\n if (dropWithoutClosingOnEarlyError) return call(dropWithoutClosingOnEarlyError, this, remaining);\n\n return new IteratorProxy(getIteratorDirect(this), {\n remaining: remaining\n });\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar call = require('../internals/function-call');\nvar iterate = require('../internals/iterate');\nvar aCallable = require('../internals/a-callable');\nvar anObject = require('../internals/an-object');\nvar getIteratorDirect = require('../internals/get-iterator-direct');\nvar iteratorClose = require('../internals/iterator-close');\nvar iteratorHelperWithoutClosingOnEarlyError = require('../internals/iterator-helper-without-closing-on-early-error');\n\nvar everyWithoutClosingOnEarlyError = iteratorHelperWithoutClosingOnEarlyError('every', TypeError);\n\n// `Iterator.prototype.every` method\n// https://tc39.es/ecma262/#sec-iterator.prototype.every\n$({ target: 'Iterator', proto: true, real: true, forced: everyWithoutClosingOnEarlyError }, {\n every: function every(predicate) {\n anObject(this);\n try {\n aCallable(predicate);\n } catch (error) {\n iteratorClose(this, 'throw', error);\n }\n\n if (everyWithoutClosingOnEarlyError) return call(everyWithoutClosingOnEarlyError, this, predicate);\n\n var record = getIteratorDirect(this);\n var counter = 0;\n return !iterate(record, function (value, stop) {\n if (!predicate(value, counter++)) return stop();\n }, { IS_RECORD: true, INTERRUPTED: true }).stopped;\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar call = require('../internals/function-call');\nvar aCallable = require('../internals/a-callable');\nvar anObject = require('../internals/an-object');\nvar getIteratorDirect = require('../internals/get-iterator-direct');\nvar createIteratorProxy = require('../internals/iterator-create-proxy');\nvar callWithSafeIterationClosing = require('../internals/call-with-safe-iteration-closing');\nvar IS_PURE = require('../internals/is-pure');\nvar iteratorClose = require('../internals/iterator-close');\nvar iteratorHelperThrowsOnInvalidIterator = require('../internals/iterator-helper-throws-on-invalid-iterator');\nvar iteratorHelperWithoutClosingOnEarlyError = require('../internals/iterator-helper-without-closing-on-early-error');\n\nvar FILTER_WITHOUT_THROWING_ON_INVALID_ITERATOR = !IS_PURE && !iteratorHelperThrowsOnInvalidIterator('filter', function () { /* empty */ });\nvar filterWithoutClosingOnEarlyError = !IS_PURE && !FILTER_WITHOUT_THROWING_ON_INVALID_ITERATOR\n && iteratorHelperWithoutClosingOnEarlyError('filter', TypeError);\n\nvar FORCED = IS_PURE || FILTER_WITHOUT_THROWING_ON_INVALID_ITERATOR || filterWithoutClosingOnEarlyError;\n\nvar IteratorProxy = createIteratorProxy(function () {\n var iterator = this.iterator;\n var predicate = this.predicate;\n var next = this.next;\n var result, done, value;\n while (true) {\n result = anObject(call(next, iterator));\n done = this.done = !!result.done;\n if (done) return;\n value = result.value;\n if (callWithSafeIterationClosing(iterator, predicate, [value, this.counter++], true)) return value;\n }\n});\n\n// `Iterator.prototype.filter` method\n// https://tc39.es/ecma262/#sec-iterator.prototype.filter\n$({ target: 'Iterator', proto: true, real: true, forced: FORCED }, {\n filter: function filter(predicate) {\n anObject(this);\n try {\n aCallable(predicate);\n } catch (error) {\n iteratorClose(this, 'throw', error);\n }\n\n if (filterWithoutClosingOnEarlyError) return call(filterWithoutClosingOnEarlyError, this, predicate);\n\n return new IteratorProxy(getIteratorDirect(this), {\n predicate: predicate\n });\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar call = require('../internals/function-call');\nvar iterate = require('../internals/iterate');\nvar aCallable = require('../internals/a-callable');\nvar anObject = require('../internals/an-object');\nvar getIteratorDirect = require('../internals/get-iterator-direct');\nvar iteratorClose = require('../internals/iterator-close');\nvar iteratorHelperWithoutClosingOnEarlyError = require('../internals/iterator-helper-without-closing-on-early-error');\n\nvar findWithoutClosingOnEarlyError = iteratorHelperWithoutClosingOnEarlyError('find', TypeError);\n\n// `Iterator.prototype.find` method\n// https://tc39.es/ecma262/#sec-iterator.prototype.find\n$({ target: 'Iterator', proto: true, real: true, forced: findWithoutClosingOnEarlyError }, {\n find: function find(predicate) {\n anObject(this);\n try {\n aCallable(predicate);\n } catch (error) {\n iteratorClose(this, 'throw', error);\n }\n\n if (findWithoutClosingOnEarlyError) return call(findWithoutClosingOnEarlyError, this, predicate);\n\n var record = getIteratorDirect(this);\n var counter = 0;\n return iterate(record, function (value, stop) {\n if (predicate(value, counter++)) return stop(value);\n }, { IS_RECORD: true, INTERRUPTED: true }).result;\n }\n});\n", "'use strict';\nvar call = require('../internals/function-call');\nvar anObject = require('../internals/an-object');\nvar getIteratorDirect = require('../internals/get-iterator-direct');\nvar getIteratorMethod = require('../internals/get-iterator-method');\n\nmodule.exports = function (obj, stringHandling) {\n if (!stringHandling || typeof obj !== 'string') anObject(obj);\n var method = getIteratorMethod(obj);\n return getIteratorDirect(anObject(method !== undefined ? call(method, obj) : obj));\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar call = require('../internals/function-call');\nvar aCallable = require('../internals/a-callable');\nvar anObject = require('../internals/an-object');\nvar getIteratorDirect = require('../internals/get-iterator-direct');\nvar getIteratorFlattenable = require('../internals/get-iterator-flattenable');\nvar createIteratorProxy = require('../internals/iterator-create-proxy');\nvar iteratorClose = require('../internals/iterator-close');\nvar IS_PURE = require('../internals/is-pure');\nvar iteratorHelperThrowsOnInvalidIterator = require('../internals/iterator-helper-throws-on-invalid-iterator');\nvar iteratorHelperWithoutClosingOnEarlyError = require('../internals/iterator-helper-without-closing-on-early-error');\n\n// Should not throw an error for an iterator without `return` method. Fixed in Safari 26.2\n// https://bugs.webkit.org/show_bug.cgi?id=297532\nfunction throwsOnIteratorWithoutReturn() {\n try {\n // eslint-disable-next-line es/no-map, es/no-iterator, es/no-iterator-prototype-flatmap -- required for testing\n var it = Iterator.prototype.flatMap.call(new Map([[4, 5]]).entries(), function (v) { return v; });\n it.next();\n it['return']();\n } catch (error) {\n return true;\n }\n}\n\nvar FLAT_MAP_WITHOUT_THROWING_ON_INVALID_ITERATOR = !IS_PURE\n && !iteratorHelperThrowsOnInvalidIterator('flatMap', function () { /* empty */ });\nvar flatMapWithoutClosingOnEarlyError = !IS_PURE && !FLAT_MAP_WITHOUT_THROWING_ON_INVALID_ITERATOR\n && iteratorHelperWithoutClosingOnEarlyError('flatMap', TypeError);\n\nvar FORCED = IS_PURE || FLAT_MAP_WITHOUT_THROWING_ON_INVALID_ITERATOR || flatMapWithoutClosingOnEarlyError\n || throwsOnIteratorWithoutReturn();\n\nvar IteratorProxy = createIteratorProxy(function () {\n var iterator = this.iterator;\n var mapper = this.mapper;\n var result, inner;\n\n while (true) {\n if (inner = this.inner) try {\n result = anObject(call(inner.next, inner.iterator));\n if (!result.done) return result.value;\n this.inner = null;\n } catch (error) { iteratorClose(iterator, 'throw', error); }\n\n result = anObject(call(this.next, iterator));\n\n if (this.done = !!result.done) return;\n\n try {\n this.inner = getIteratorFlattenable(mapper(result.value, this.counter++), false);\n } catch (error) { iteratorClose(iterator, 'throw', error); }\n }\n});\n\n// `Iterator.prototype.flatMap` method\n// https://tc39.es/ecma262/#sec-iterator.prototype.flatmap\n$({ target: 'Iterator', proto: true, real: true, forced: FORCED }, {\n flatMap: function flatMap(mapper) {\n anObject(this);\n try {\n aCallable(mapper);\n } catch (error) {\n iteratorClose(this, 'throw', error);\n }\n\n if (flatMapWithoutClosingOnEarlyError) return call(flatMapWithoutClosingOnEarlyError, this, mapper);\n\n return new IteratorProxy(getIteratorDirect(this), {\n mapper: mapper,\n inner: null\n });\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar call = require('../internals/function-call');\nvar iterate = require('../internals/iterate');\nvar aCallable = require('../internals/a-callable');\nvar anObject = require('../internals/an-object');\nvar getIteratorDirect = require('../internals/get-iterator-direct');\nvar iteratorClose = require('../internals/iterator-close');\nvar iteratorHelperWithoutClosingOnEarlyError = require('../internals/iterator-helper-without-closing-on-early-error');\n\nvar forEachWithoutClosingOnEarlyError = iteratorHelperWithoutClosingOnEarlyError('forEach', TypeError);\n\n// `Iterator.prototype.forEach` method\n// https://tc39.es/ecma262/#sec-iterator.prototype.foreach\n$({ target: 'Iterator', proto: true, real: true, forced: forEachWithoutClosingOnEarlyError }, {\n forEach: function forEach(fn) {\n anObject(this);\n try {\n aCallable(fn);\n } catch (error) {\n iteratorClose(this, 'throw', error);\n }\n\n if (forEachWithoutClosingOnEarlyError) return call(forEachWithoutClosingOnEarlyError, this, fn);\n\n var record = getIteratorDirect(this);\n var counter = 0;\n iterate(record, function (value) {\n fn(value, counter++);\n }, { IS_RECORD: true });\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar call = require('../internals/function-call');\nvar toObject = require('../internals/to-object');\nvar isPrototypeOf = require('../internals/object-is-prototype-of');\nvar IteratorPrototype = require('../internals/iterators-core').IteratorPrototype;\nvar createIteratorProxy = require('../internals/iterator-create-proxy');\nvar getIteratorFlattenable = require('../internals/get-iterator-flattenable');\nvar IS_PURE = require('../internals/is-pure');\n\nvar FORCED = IS_PURE || function () {\n // Should not throw when an underlying iterator's `return` method is null\n // https://bugs.webkit.org/show_bug.cgi?id=288714\n try {\n // eslint-disable-next-line es/no-iterator -- required for testing\n Iterator.from({ 'return': null })['return']();\n } catch (error) {\n return true;\n }\n}();\n\nvar IteratorProxy = createIteratorProxy(function () {\n return call(this.next, this.iterator);\n}, true);\n\n// `Iterator.from` method\n// https://tc39.es/ecma262/#sec-iterator.from\n$({ target: 'Iterator', stat: true, forced: FORCED }, {\n from: function from(O) {\n var iteratorRecord = getIteratorFlattenable(typeof O == 'string' ? toObject(O) : O, true);\n return isPrototypeOf(IteratorPrototype, iteratorRecord.iterator)\n ? iteratorRecord.iterator\n : new IteratorProxy(iteratorRecord);\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar call = require('../internals/function-call');\nvar aCallable = require('../internals/a-callable');\nvar anObject = require('../internals/an-object');\nvar getIteratorDirect = require('../internals/get-iterator-direct');\nvar createIteratorProxy = require('../internals/iterator-create-proxy');\nvar callWithSafeIterationClosing = require('../internals/call-with-safe-iteration-closing');\nvar iteratorClose = require('../internals/iterator-close');\nvar iteratorHelperThrowsOnInvalidIterator = require('../internals/iterator-helper-throws-on-invalid-iterator');\nvar iteratorHelperWithoutClosingOnEarlyError = require('../internals/iterator-helper-without-closing-on-early-error');\nvar IS_PURE = require('../internals/is-pure');\n\nvar MAP_WITHOUT_THROWING_ON_INVALID_ITERATOR = !IS_PURE && !iteratorHelperThrowsOnInvalidIterator('map', function () { /* empty */ });\nvar mapWithoutClosingOnEarlyError = !IS_PURE && !MAP_WITHOUT_THROWING_ON_INVALID_ITERATOR\n && iteratorHelperWithoutClosingOnEarlyError('map', TypeError);\n\nvar FORCED = IS_PURE || MAP_WITHOUT_THROWING_ON_INVALID_ITERATOR || mapWithoutClosingOnEarlyError;\n\nvar IteratorProxy = createIteratorProxy(function () {\n var iterator = this.iterator;\n var result = anObject(call(this.next, iterator));\n var done = this.done = !!result.done;\n if (!done) return callWithSafeIterationClosing(iterator, this.mapper, [result.value, this.counter++], true);\n});\n\n// `Iterator.prototype.map` method\n// https://tc39.es/ecma262/#sec-iterator.prototype.map\n$({ target: 'Iterator', proto: true, real: true, forced: FORCED }, {\n map: function map(mapper) {\n anObject(this);\n try {\n aCallable(mapper);\n } catch (error) {\n iteratorClose(this, 'throw', error);\n }\n\n if (mapWithoutClosingOnEarlyError) return call(mapWithoutClosingOnEarlyError, this, mapper);\n\n return new IteratorProxy(getIteratorDirect(this), {\n mapper: mapper\n });\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar iterate = require('../internals/iterate');\nvar aCallable = require('../internals/a-callable');\nvar anObject = require('../internals/an-object');\nvar getIteratorDirect = require('../internals/get-iterator-direct');\nvar iteratorClose = require('../internals/iterator-close');\nvar iteratorHelperWithoutClosingOnEarlyError = require('../internals/iterator-helper-without-closing-on-early-error');\nvar apply = require('../internals/function-apply');\nvar fails = require('../internals/fails');\n\nvar $TypeError = TypeError;\n\n// https://bugs.webkit.org/show_bug.cgi?id=291651\nvar FAILS_ON_INITIAL_UNDEFINED = fails(function () {\n // eslint-disable-next-line es/no-iterator-prototype-reduce, es/no-array-prototype-keys, array-callback-return -- required for testing\n [].keys().reduce(function () { /* empty */ }, undefined);\n});\n\nvar reduceWithoutClosingOnEarlyError = !FAILS_ON_INITIAL_UNDEFINED && iteratorHelperWithoutClosingOnEarlyError('reduce', $TypeError);\n\n// `Iterator.prototype.reduce` method\n// https://tc39.es/ecma262/#sec-iterator.prototype.reduce\n$({ target: 'Iterator', proto: true, real: true, forced: FAILS_ON_INITIAL_UNDEFINED || reduceWithoutClosingOnEarlyError }, {\n reduce: function reduce(reducer /* , initialValue */) {\n anObject(this);\n try {\n aCallable(reducer);\n } catch (error) {\n iteratorClose(this, 'throw', error);\n }\n\n var noInitial = arguments.length < 2;\n var accumulator = noInitial ? undefined : arguments[1];\n if (reduceWithoutClosingOnEarlyError) {\n return apply(reduceWithoutClosingOnEarlyError, this, noInitial ? [reducer] : [reducer, accumulator]);\n }\n var record = getIteratorDirect(this);\n var counter = 0;\n iterate(record, function (value) {\n if (noInitial) {\n noInitial = false;\n accumulator = value;\n } else {\n accumulator = reducer(accumulator, value, counter);\n }\n counter++;\n }, { IS_RECORD: true });\n if (noInitial) throw new $TypeError('Reduce of empty iterator with no initial value');\n return accumulator;\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar call = require('../internals/function-call');\nvar iterate = require('../internals/iterate');\nvar aCallable = require('../internals/a-callable');\nvar anObject = require('../internals/an-object');\nvar getIteratorDirect = require('../internals/get-iterator-direct');\nvar iteratorClose = require('../internals/iterator-close');\nvar iteratorHelperWithoutClosingOnEarlyError = require('../internals/iterator-helper-without-closing-on-early-error');\n\nvar someWithoutClosingOnEarlyError = iteratorHelperWithoutClosingOnEarlyError('some', TypeError);\n\n// `Iterator.prototype.some` method\n// https://tc39.es/ecma262/#sec-iterator.prototype.some\n$({ target: 'Iterator', proto: true, real: true, forced: someWithoutClosingOnEarlyError }, {\n some: function some(predicate) {\n anObject(this);\n try {\n aCallable(predicate);\n } catch (error) {\n iteratorClose(this, 'throw', error);\n }\n\n if (someWithoutClosingOnEarlyError) return call(someWithoutClosingOnEarlyError, this, predicate);\n\n var record = getIteratorDirect(this);\n var counter = 0;\n return iterate(record, function (value, stop) {\n if (predicate(value, counter++)) return stop();\n }, { IS_RECORD: true, INTERRUPTED: true }).stopped;\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar call = require('../internals/function-call');\nvar anObject = require('../internals/an-object');\nvar getIteratorDirect = require('../internals/get-iterator-direct');\nvar notANaN = require('../internals/not-a-nan');\nvar toPositiveInteger = require('../internals/to-positive-integer');\nvar createIteratorProxy = require('../internals/iterator-create-proxy');\nvar iteratorClose = require('../internals/iterator-close');\nvar iteratorHelperThrowsOnInvalidIterator = require('../internals/iterator-helper-throws-on-invalid-iterator');\nvar iteratorHelperWithoutClosingOnEarlyError = require('../internals/iterator-helper-without-closing-on-early-error');\nvar IS_PURE = require('../internals/is-pure');\n\nvar TAKE_WITHOUT_THROWING_ON_INVALID_ITERATOR = !IS_PURE && !iteratorHelperThrowsOnInvalidIterator('take', 1);\nvar takeWithoutClosingOnEarlyError = !IS_PURE && !TAKE_WITHOUT_THROWING_ON_INVALID_ITERATOR\n && iteratorHelperWithoutClosingOnEarlyError('take', RangeError);\n\nvar FORCED = IS_PURE || TAKE_WITHOUT_THROWING_ON_INVALID_ITERATOR || takeWithoutClosingOnEarlyError;\n\nvar IteratorProxy = createIteratorProxy(function () {\n var iterator = this.iterator;\n if (!this.remaining--) {\n this.done = true;\n return iteratorClose(iterator, 'normal', undefined);\n }\n var result = anObject(call(this.next, iterator));\n var done = this.done = !!result.done;\n if (!done) return result.value;\n});\n\n// `Iterator.prototype.take` method\n// https://tc39.es/ecma262/#sec-iterator.prototype.take\n$({ target: 'Iterator', proto: true, real: true, forced: FORCED }, {\n take: function take(limit) {\n anObject(this);\n var remaining;\n try {\n remaining = toPositiveInteger(notANaN(+limit));\n } catch (error) {\n iteratorClose(this, 'throw', error);\n }\n\n if (takeWithoutClosingOnEarlyError) return call(takeWithoutClosingOnEarlyError, this, remaining);\n\n return new IteratorProxy(getIteratorDirect(this), {\n remaining: remaining\n });\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar anObject = require('../internals/an-object');\nvar createProperty = require('../internals/create-property');\nvar iterate = require('../internals/iterate');\nvar getIteratorDirect = require('../internals/get-iterator-direct');\n\n// `Iterator.prototype.toArray` method\n// https://tc39.es/ecma262/#sec-iterator.prototype.toarray\n$({ target: 'Iterator', proto: true, real: true }, {\n toArray: function toArray() {\n var result = [];\n var index = 0;\n iterate(getIteratorDirect(anObject(this)), function (element) {\n createProperty(result, index++, element);\n }, { IS_RECORD: true });\n return result;\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar NATIVE_RAW_JSON = require('../internals/native-raw-json');\nvar isRawJSON = require('../internals/is-raw-json');\n\n// `JSON.isRawJSON` method\n// https://tc39.es/proposal-json-parse-with-source/#sec-json.israwjson\n// https://github.com/tc39/proposal-json-parse-with-source\n$({ target: 'JSON', stat: true, forced: !NATIVE_RAW_JSON }, {\n isRawJSON: isRawJSON\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar DESCRIPTORS = require('../internals/descriptors');\nvar globalThis = require('../internals/global-this');\nvar getBuiltIn = require('../internals/get-built-in');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar call = require('../internals/function-call');\nvar isCallable = require('../internals/is-callable');\nvar isObject = require('../internals/is-object');\nvar isArray = require('../internals/is-array');\nvar hasOwn = require('../internals/has-own-property');\nvar toString = require('../internals/to-string');\nvar lengthOfArrayLike = require('../internals/length-of-array-like');\nvar createProperty = require('../internals/create-property');\nvar fails = require('../internals/fails');\nvar parseJSONString = require('../internals/parse-json-string');\nvar NATIVE_SYMBOL = require('../internals/symbol-constructor-detection');\n\nvar JSON = globalThis.JSON;\nvar Number = globalThis.Number;\nvar SyntaxError = globalThis.SyntaxError;\nvar nativeParse = JSON && JSON.parse;\nvar enumerableOwnProperties = getBuiltIn('Object', 'keys');\n// eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe\nvar getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;\nvar at = uncurryThis(''.charAt);\nvar slice = uncurryThis(''.slice);\nvar exec = uncurryThis(/./.exec);\nvar push = uncurryThis([].push);\n\nvar IS_DIGIT = /^\\d$/;\nvar IS_NON_ZERO_DIGIT = /^[1-9]$/;\nvar IS_NUMBER_START = /^[\\d-]$/;\nvar IS_WHITESPACE = /^[\\t\\n\\r ]$/;\n\nvar PRIMITIVE = 0;\nvar OBJECT = 1;\n\nvar $parse = function (source, reviver) {\n source = toString(source);\n var context = new Context(source, 0, '');\n var root = context.parse();\n var value = root.value;\n var endIndex = context.skip(IS_WHITESPACE, root.end);\n if (endIndex < source.length) {\n throw new SyntaxError('Unexpected extra character: \"' + at(source, endIndex) + '\" after the parsed data at: ' + endIndex);\n }\n return isCallable(reviver) ? internalize({ '': value }, '', reviver, root) : value;\n};\n\nvar internalize = function (holder, name, reviver, node) {\n var val = holder[name];\n var unmodified = node && val === node.value;\n var context = unmodified && typeof node.source == 'string' ? { source: node.source } : {};\n var elementRecordsLen, keys, len, i, P;\n if (isObject(val)) {\n var nodeIsArray = isArray(val);\n var nodes = unmodified ? node.nodes : nodeIsArray ? [] : {};\n if (nodeIsArray) {\n elementRecordsLen = nodes.length;\n len = lengthOfArrayLike(val);\n for (i = 0; i < len; i++) {\n internalizeProperty(val, i, internalize(val, '' + i, reviver, i < elementRecordsLen ? nodes[i] : undefined));\n }\n } else {\n keys = enumerableOwnProperties(val);\n len = lengthOfArrayLike(keys);\n for (i = 0; i < len; i++) {\n P = keys[i];\n internalizeProperty(val, P, internalize(val, P, reviver, hasOwn(nodes, P) ? nodes[P] : undefined));\n }\n }\n }\n return call(reviver, holder, name, val, context);\n};\n\nvar internalizeProperty = function (object, key, value) {\n if (DESCRIPTORS) {\n var descriptor = getOwnPropertyDescriptor(object, key);\n if (descriptor && !descriptor.configurable) return;\n }\n if (value === undefined) delete object[key];\n else createProperty(object, key, value);\n};\n\nvar Node = function (value, end, source, nodes) {\n this.value = value;\n this.end = end;\n this.source = source;\n this.nodes = nodes;\n};\n\nvar Context = function (source, index) {\n this.source = source;\n this.index = index;\n};\n\n// https://www.json.org/json-en.html\nContext.prototype = {\n fork: function (nextIndex) {\n return new Context(this.source, nextIndex);\n },\n parse: function () {\n var source = this.source;\n var i = this.skip(IS_WHITESPACE, this.index);\n var fork = this.fork(i);\n var chr = at(source, i);\n if (exec(IS_NUMBER_START, chr)) return fork.number();\n switch (chr) {\n case '{':\n return fork.object();\n case '[':\n return fork.array();\n case '\"':\n return fork.string();\n case 't':\n return fork.keyword(true);\n case 'f':\n return fork.keyword(false);\n case 'n':\n return fork.keyword(null);\n } throw new SyntaxError('Unexpected character: \"' + chr + '\" at: ' + i);\n },\n node: function (type, value, start, end, nodes) {\n return new Node(value, end, type ? null : slice(this.source, start, end), nodes);\n },\n object: function () {\n var source = this.source;\n var i = this.index + 1;\n var expectKeypair = false;\n var object = {};\n var nodes = {};\n var closed = false;\n while (i < source.length) {\n i = this.until(['\"', '}'], i);\n if (at(source, i) === '}' && !expectKeypair) {\n i++;\n closed = true;\n break;\n }\n // Parsing the key\n var result = this.fork(i).string();\n var key = result.value;\n i = result.end;\n i = this.until([':'], i) + 1;\n // Parsing value\n i = this.skip(IS_WHITESPACE, i);\n result = this.fork(i).parse();\n createProperty(nodes, key, result);\n createProperty(object, key, result.value);\n i = this.until([',', '}'], result.end);\n var chr = at(source, i);\n if (chr === ',') {\n expectKeypair = true;\n i++;\n } else if (chr === '}') {\n i++;\n closed = true;\n break;\n }\n }\n if (!closed) throw new SyntaxError('Unterminated object at: ' + i);\n return this.node(OBJECT, object, this.index, i, nodes);\n },\n array: function () {\n var source = this.source;\n var i = this.index + 1;\n var expectElement = false;\n var array = [];\n var nodes = [];\n var closed = false;\n while (i < source.length) {\n i = this.skip(IS_WHITESPACE, i);\n if (at(source, i) === ']' && !expectElement) {\n i++;\n closed = true;\n break;\n }\n var result = this.fork(i).parse();\n push(nodes, result);\n push(array, result.value);\n i = this.until([',', ']'], result.end);\n if (at(source, i) === ',') {\n expectElement = true;\n i++;\n } else if (at(source, i) === ']') {\n i++;\n closed = true;\n break;\n }\n }\n if (!closed) throw new SyntaxError('Unterminated array at: ' + i);\n return this.node(OBJECT, array, this.index, i, nodes);\n },\n string: function () {\n var index = this.index;\n var parsed = parseJSONString(this.source, this.index + 1);\n return this.node(PRIMITIVE, parsed.value, index, parsed.end);\n },\n number: function () {\n var source = this.source;\n var startIndex = this.index;\n var i = startIndex;\n if (at(source, i) === '-') i++;\n if (at(source, i) === '0') i++;\n else if (exec(IS_NON_ZERO_DIGIT, at(source, i))) i = this.skip(IS_DIGIT, i + 1);\n else throw new SyntaxError('Failed to parse number at: ' + i);\n if (at(source, i) === '.') {\n var fractionStartIndex = i + 1;\n i = this.skip(IS_DIGIT, fractionStartIndex);\n if (fractionStartIndex === i) throw new SyntaxError(\"Failed to parse number's fraction at: \" + i);\n }\n if (at(source, i) === 'e' || at(source, i) === 'E') {\n i++;\n if (at(source, i) === '+' || at(source, i) === '-') i++;\n var exponentStartIndex = i;\n i = this.skip(IS_DIGIT, i);\n if (exponentStartIndex === i) throw new SyntaxError(\"Failed to parse number's exponent value at: \" + i);\n }\n return this.node(PRIMITIVE, Number(slice(source, startIndex, i)), startIndex, i);\n },\n keyword: function (value) {\n var keyword = '' + value;\n var index = this.index;\n var endIndex = index + keyword.length;\n if (slice(this.source, index, endIndex) !== keyword) throw new SyntaxError('Failed to parse value at: ' + index);\n return this.node(PRIMITIVE, value, index, endIndex);\n },\n skip: function (regex, i) {\n var source = this.source;\n for (; i < source.length; i++) if (!exec(regex, at(source, i))) break;\n return i;\n },\n until: function (array, i) {\n i = this.skip(IS_WHITESPACE, i);\n var chr = at(this.source, i);\n for (var j = 0; j < array.length; j++) if (array[j] === chr) return i;\n throw new SyntaxError('Unexpected character: \"' + chr + '\" at: ' + i);\n }\n};\n\nvar NO_SOURCE_SUPPORT = fails(function () {\n var unsafeInt = '9007199254740993';\n var source;\n nativeParse(unsafeInt, function (key, value, context) {\n source = context.source;\n });\n return source !== unsafeInt;\n});\n\nvar PROPER_BASE_PARSE = NATIVE_SYMBOL && !fails(function () {\n // Safari 9 bug\n return 1 / nativeParse('-0 \\t') !== -Infinity;\n});\n\n// `JSON.parse` method\n// https://tc39.es/ecma262/#sec-json.parse\n// https://github.com/tc39/proposal-json-parse-with-source\n$({ target: 'JSON', stat: true, forced: NO_SOURCE_SUPPORT }, {\n parse: function parse(text, reviver) {\n return PROPER_BASE_PARSE && !isCallable(reviver) ? nativeParse(text) : $parse(text, reviver);\n }\n});\n", "'use strict';\nvar fails = require('../internals/fails');\n\nmodule.exports = !fails(function () {\n // eslint-disable-next-line es/no-object-isextensible, es/no-object-preventextensions -- required for testing\n return Object.isExtensible(Object.preventExtensions({}));\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar FREEZING = require('../internals/freezing');\nvar NATIVE_RAW_JSON = require('../internals/native-raw-json');\nvar getBuiltIn = require('../internals/get-built-in');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar toString = require('../internals/to-string');\nvar createProperty = require('../internals/create-property');\nvar setInternalState = require('../internals/internal-state').set;\n\nvar $SyntaxError = SyntaxError;\nvar parse = getBuiltIn('JSON', 'parse');\nvar create = getBuiltIn('Object', 'create');\nvar freeze = getBuiltIn('Object', 'freeze');\nvar at = uncurryThis(''.charAt);\n\nvar ERROR_MESSAGE = 'Unacceptable as raw JSON';\n\nvar isWhitespace = function (it) {\n return it === ' ' || it === '\\t' || it === '\\n' || it === '\\r';\n};\n\n// `JSON.rawJSON` method\n// https://tc39.es/proposal-json-parse-with-source/#sec-json.rawjson\n// https://github.com/tc39/proposal-json-parse-with-source\n$({ target: 'JSON', stat: true, forced: !NATIVE_RAW_JSON }, {\n rawJSON: function rawJSON(text) {\n var jsonString = toString(text);\n if (jsonString === '' || isWhitespace(at(jsonString, 0)) || isWhitespace(at(jsonString, jsonString.length - 1))) {\n throw new $SyntaxError(ERROR_MESSAGE);\n }\n var parsed = parse(jsonString);\n if (typeof parsed == 'object' && parsed !== null) throw new $SyntaxError(ERROR_MESSAGE);\n var obj = create(null);\n setInternalState(obj, { type: 'RawJSON' });\n createProperty(obj, 'rawJSON', jsonString);\n return FREEZING ? freeze(obj) : obj;\n }\n});\n", "'use strict';\nvar globalThis = require('../internals/global-this');\nvar setToStringTag = require('../internals/set-to-string-tag');\n\n// JSON[@@toStringTag] property\n// https://tc39.es/ecma262/#sec-json-@@tostringtag\nsetToStringTag(globalThis.JSON, 'JSON', true);\n", "'use strict';\n// FF26- bug: ArrayBuffers are non-extensible, but Object.isExtensible does not report it\nvar fails = require('../internals/fails');\n\nmodule.exports = fails(function () {\n if (typeof ArrayBuffer == 'function') {\n var buffer = new ArrayBuffer(8);\n // eslint-disable-next-line es/no-object-isextensible, es/no-object-defineproperty -- safe\n if (Object.isExtensible(buffer)) Object.defineProperty(buffer, 'a', { value: 8 });\n }\n});\n", "'use strict';\nvar fails = require('../internals/fails');\nvar isObject = require('../internals/is-object');\nvar classof = require('../internals/classof-raw');\nvar ARRAY_BUFFER_NON_EXTENSIBLE = require('../internals/array-buffer-non-extensible');\n\n// eslint-disable-next-line es/no-object-isextensible -- safe\nvar $isExtensible = Object.isExtensible;\nvar FAILS_ON_PRIMITIVES = fails(function () { $isExtensible(1); });\n\n// `Object.isExtensible` method\n// https://tc39.es/ecma262/#sec-object.isextensible\nmodule.exports = (FAILS_ON_PRIMITIVES || ARRAY_BUFFER_NON_EXTENSIBLE) ? function isExtensible(it) {\n if (!isObject(it)) return false;\n if (ARRAY_BUFFER_NON_EXTENSIBLE && classof(it) === 'ArrayBuffer') return false;\n return $isExtensible ? $isExtensible(it) : true;\n} : $isExtensible;\n", "'use strict';\nvar $ = require('../internals/export');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar hiddenKeys = require('../internals/hidden-keys');\nvar isObject = require('../internals/is-object');\nvar hasOwn = require('../internals/has-own-property');\nvar defineProperty = require('../internals/object-define-property').f;\nvar getOwnPropertyNamesModule = require('../internals/object-get-own-property-names');\nvar getOwnPropertyNamesExternalModule = require('../internals/object-get-own-property-names-external');\nvar isExtensible = require('../internals/object-is-extensible');\nvar uid = require('../internals/uid');\nvar FREEZING = require('../internals/freezing');\n\nvar REQUIRED = false;\nvar METADATA = uid('meta');\nvar id = 0;\n\nvar setMetadata = function (it) {\n defineProperty(it, METADATA, { value: {\n objectID: 'O' + id++, // object ID\n weakData: {} // weak collections IDs\n } });\n};\n\nvar fastKey = function (it, create) {\n // return a primitive with prefix\n if (!isObject(it)) return typeof it == 'symbol' ? it : (typeof it == 'string' ? 'S' : 'P') + it;\n if (!hasOwn(it, METADATA)) {\n // can't set metadata to uncaught frozen object\n if (!isExtensible(it)) return 'F';\n // not necessary to add metadata\n if (!create) return 'E';\n // add missing metadata\n setMetadata(it);\n // return object ID\n } return it[METADATA].objectID;\n};\n\nvar getWeakData = function (it, create) {\n if (!hasOwn(it, METADATA)) {\n // can't set metadata to uncaught frozen object\n if (!isExtensible(it)) return true;\n // not necessary to add metadata\n if (!create) return false;\n // add missing metadata\n setMetadata(it);\n // return the store of weak collections IDs\n } return it[METADATA].weakData;\n};\n\n// add metadata on freeze-family methods calling\nvar onFreeze = function (it) {\n if (FREEZING && REQUIRED && isExtensible(it) && !hasOwn(it, METADATA)) setMetadata(it);\n return it;\n};\n\nvar enable = function () {\n meta.enable = function () { /* empty */ };\n REQUIRED = true;\n var getOwnPropertyNames = getOwnPropertyNamesModule.f;\n var splice = uncurryThis([].splice);\n var test = {};\n // eslint-disable-next-line unicorn/no-immediate-mutation -- ES3 syntax limitation\n test[METADATA] = 1;\n\n // prevent exposing of metadata key\n if (getOwnPropertyNames(test).length) {\n getOwnPropertyNamesModule.f = function (it) {\n var result = getOwnPropertyNames(it);\n for (var i = 0, length = result.length; i < length; i++) {\n if (result[i] === METADATA) {\n splice(result, i, 1);\n break;\n }\n } return result;\n };\n\n $({ target: 'Object', stat: true, forced: true }, {\n getOwnPropertyNames: getOwnPropertyNamesExternalModule.f\n });\n }\n};\n\nvar meta = module.exports = {\n enable: enable,\n fastKey: fastKey,\n getWeakData: getWeakData,\n onFreeze: onFreeze\n};\n\nhiddenKeys[METADATA] = true;\n", "'use strict';\nvar $ = require('../internals/export');\nvar globalThis = require('../internals/global-this');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar isForced = require('../internals/is-forced');\nvar defineBuiltIn = require('../internals/define-built-in');\nvar InternalMetadataModule = require('../internals/internal-metadata');\nvar iterate = require('../internals/iterate');\nvar anInstance = require('../internals/an-instance');\nvar isCallable = require('../internals/is-callable');\nvar isNullOrUndefined = require('../internals/is-null-or-undefined');\nvar isObject = require('../internals/is-object');\nvar fails = require('../internals/fails');\nvar checkCorrectnessOfIteration = require('../internals/check-correctness-of-iteration');\nvar setToStringTag = require('../internals/set-to-string-tag');\nvar inheritIfRequired = require('../internals/inherit-if-required');\n\nmodule.exports = function (CONSTRUCTOR_NAME, wrapper, common) {\n var IS_MAP = CONSTRUCTOR_NAME.indexOf('Map') !== -1;\n var IS_WEAK = CONSTRUCTOR_NAME.indexOf('Weak') !== -1;\n var ADDER = IS_MAP ? 'set' : 'add';\n var NativeConstructor = globalThis[CONSTRUCTOR_NAME];\n var NativePrototype = NativeConstructor && NativeConstructor.prototype;\n var Constructor = NativeConstructor;\n var exported = {};\n\n var fixMethod = function (KEY) {\n var uncurriedNativeMethod = uncurryThis(NativePrototype[KEY]);\n defineBuiltIn(NativePrototype, KEY,\n KEY === 'add' ? function add(value) {\n uncurriedNativeMethod(this, value === 0 ? 0 : value);\n return this;\n } : KEY === 'delete' ? function (key) {\n return IS_WEAK && !isObject(key) ? false : uncurriedNativeMethod(this, key === 0 ? 0 : key);\n } : KEY === 'get' ? function get(key) {\n return IS_WEAK && !isObject(key) ? undefined : uncurriedNativeMethod(this, key === 0 ? 0 : key);\n } : KEY === 'has' ? function has(key) {\n return IS_WEAK && !isObject(key) ? false : uncurriedNativeMethod(this, key === 0 ? 0 : key);\n } : function set(key, value) {\n uncurriedNativeMethod(this, key === 0 ? 0 : key, value);\n return this;\n }\n );\n };\n\n var REPLACE = isForced(\n CONSTRUCTOR_NAME,\n !isCallable(NativeConstructor) || !(IS_WEAK || NativePrototype.forEach && !fails(function () {\n new NativeConstructor().entries().next();\n }))\n );\n\n if (REPLACE) {\n // create collection constructor\n Constructor = common.getConstructor(wrapper, CONSTRUCTOR_NAME, IS_MAP, ADDER);\n InternalMetadataModule.enable();\n } else if (isForced(CONSTRUCTOR_NAME, true)) {\n var instance = new Constructor();\n // early implementations not supports chaining\n var HASNT_CHAINING = instance[ADDER](IS_WEAK ? {} : -0, 1) !== instance;\n // V8 ~ Chromium 40- weak-collections throws on primitives, but should return false\n var THROWS_ON_PRIMITIVES = fails(function () { instance.has(1); });\n // most early implementations doesn't supports iterables, most modern - not close it correctly\n // eslint-disable-next-line no-new -- required for testing\n var ACCEPT_ITERABLES = checkCorrectnessOfIteration(function (iterable) { new NativeConstructor(iterable); });\n // for early implementations -0 and +0 not the same\n var BUGGY_ZERO = !IS_WEAK && fails(function () {\n // V8 ~ Chromium 42- fails only with 5+ elements\n var $instance = new NativeConstructor();\n var index = 5;\n while (index--) $instance[ADDER](index, index);\n return !$instance.has(-0);\n });\n\n if (!ACCEPT_ITERABLES) {\n Constructor = wrapper(function (dummy, iterable) {\n anInstance(dummy, NativePrototype);\n var that = inheritIfRequired(new NativeConstructor(), dummy, Constructor);\n if (!isNullOrUndefined(iterable)) iterate(iterable, that[ADDER], { that: that, AS_ENTRIES: IS_MAP });\n return that;\n });\n Constructor.prototype = NativePrototype;\n NativePrototype.constructor = Constructor;\n }\n\n if (THROWS_ON_PRIMITIVES || BUGGY_ZERO) {\n fixMethod('delete');\n fixMethod('has');\n IS_MAP && fixMethod('get');\n }\n\n if (BUGGY_ZERO || HASNT_CHAINING) fixMethod(ADDER);\n\n // weak collections should not contains .clear method\n if (IS_WEAK && NativePrototype.clear) delete NativePrototype.clear;\n }\n\n exported[CONSTRUCTOR_NAME] = Constructor;\n $({ global: true, constructor: true, forced: Constructor !== NativeConstructor }, exported);\n\n setToStringTag(Constructor, CONSTRUCTOR_NAME);\n\n if (!IS_WEAK) common.setStrong(Constructor, CONSTRUCTOR_NAME, IS_MAP);\n\n return Constructor;\n};\n", "'use strict';\nvar create = require('../internals/object-create');\nvar defineBuiltInAccessor = require('../internals/define-built-in-accessor');\nvar defineBuiltIns = require('../internals/define-built-ins');\nvar bind = require('../internals/function-bind-context');\nvar anInstance = require('../internals/an-instance');\nvar isNullOrUndefined = require('../internals/is-null-or-undefined');\nvar iterate = require('../internals/iterate');\nvar defineIterator = require('../internals/iterator-define');\nvar createIterResultObject = require('../internals/create-iter-result-object');\nvar setSpecies = require('../internals/set-species');\nvar DESCRIPTORS = require('../internals/descriptors');\nvar fastKey = require('../internals/internal-metadata').fastKey;\nvar InternalStateModule = require('../internals/internal-state');\n\nvar setInternalState = InternalStateModule.set;\nvar internalStateGetterFor = InternalStateModule.getterFor;\n\nmodule.exports = {\n getConstructor: function (wrapper, CONSTRUCTOR_NAME, IS_MAP, ADDER) {\n var Constructor = wrapper(function (that, iterable) {\n anInstance(that, Prototype);\n setInternalState(that, {\n type: CONSTRUCTOR_NAME,\n index: create(null),\n first: null,\n last: null,\n size: 0\n });\n if (!DESCRIPTORS) that.size = 0;\n if (!isNullOrUndefined(iterable)) iterate(iterable, that[ADDER], { that: that, AS_ENTRIES: IS_MAP });\n });\n\n var Prototype = Constructor.prototype;\n\n var getInternalState = internalStateGetterFor(CONSTRUCTOR_NAME);\n\n var define = function (that, key, value) {\n var state = getInternalState(that);\n var entry = getEntry(that, key);\n var previous, index;\n // change existing entry\n if (entry) {\n entry.value = value;\n // create new entry\n } else {\n state.last = entry = {\n index: index = fastKey(key, true),\n key: key,\n value: value,\n previous: previous = state.last,\n next: null,\n removed: false\n };\n if (!state.first) state.first = entry;\n if (previous) previous.next = entry;\n if (DESCRIPTORS) state.size++;\n else that.size++;\n // add to index\n if (index !== 'F') state.index[index] = entry;\n } return that;\n };\n\n var getEntry = function (that, key) {\n var state = getInternalState(that);\n // fast case\n var index = fastKey(key);\n var entry;\n if (index !== 'F') return state.index[index];\n // frozen object case\n for (entry = state.first; entry; entry = entry.next) {\n if (entry.key === key) return entry;\n }\n };\n\n defineBuiltIns(Prototype, {\n // `{ Map, Set }.prototype.clear()` methods\n // https://tc39.es/ecma262/#sec-map.prototype.clear\n // https://tc39.es/ecma262/#sec-set.prototype.clear\n clear: function clear() {\n var that = this;\n var state = getInternalState(that);\n var entry = state.first;\n while (entry) {\n entry.removed = true;\n if (entry.previous) entry.previous = entry.previous.next = null;\n entry = entry.next;\n }\n state.first = state.last = null;\n state.index = create(null);\n if (DESCRIPTORS) state.size = 0;\n else that.size = 0;\n },\n // `{ Map, Set }.prototype.delete(key)` methods\n // https://tc39.es/ecma262/#sec-map.prototype.delete\n // https://tc39.es/ecma262/#sec-set.prototype.delete\n 'delete': function (key) {\n var that = this;\n var state = getInternalState(that);\n var entry = getEntry(that, key);\n if (entry) {\n var next = entry.next;\n var prev = entry.previous;\n delete state.index[entry.index];\n entry.removed = true;\n if (prev) prev.next = next;\n if (next) next.previous = prev;\n if (state.first === entry) state.first = next;\n if (state.last === entry) state.last = prev;\n if (DESCRIPTORS) state.size--;\n else that.size--;\n } return !!entry;\n },\n // `{ Map, Set }.prototype.forEach(callbackfn, thisArg = undefined)` methods\n // https://tc39.es/ecma262/#sec-map.prototype.foreach\n // https://tc39.es/ecma262/#sec-set.prototype.foreach\n forEach: function forEach(callbackfn /* , that = undefined */) {\n var state = getInternalState(this);\n var boundFunction = bind(callbackfn, arguments.length > 1 ? arguments[1] : undefined);\n var entry;\n while (entry = entry ? entry.next : state.first) {\n boundFunction(entry.value, entry.key, this);\n // revert to the last existing entry\n while (entry && entry.removed) entry = entry.previous;\n }\n },\n // `{ Map, Set}.prototype.has(key)` methods\n // https://tc39.es/ecma262/#sec-map.prototype.has\n // https://tc39.es/ecma262/#sec-set.prototype.has\n has: function has(key) {\n return !!getEntry(this, key);\n }\n });\n\n defineBuiltIns(Prototype, IS_MAP ? {\n // `Map.prototype.get(key)` method\n // https://tc39.es/ecma262/#sec-map.prototype.get\n get: function get(key) {\n var entry = getEntry(this, key);\n return entry && entry.value;\n },\n // `Map.prototype.set(key, value)` method\n // https://tc39.es/ecma262/#sec-map.prototype.set\n set: function set(key, value) {\n return define(this, key === 0 ? 0 : key, value);\n }\n } : {\n // `Set.prototype.add(value)` method\n // https://tc39.es/ecma262/#sec-set.prototype.add\n add: function add(value) {\n return define(this, value = value === 0 ? 0 : value, value);\n }\n });\n if (DESCRIPTORS) defineBuiltInAccessor(Prototype, 'size', {\n configurable: true,\n get: function () {\n return getInternalState(this).size;\n }\n });\n return Constructor;\n },\n setStrong: function (Constructor, CONSTRUCTOR_NAME, IS_MAP) {\n var ITERATOR_NAME = CONSTRUCTOR_NAME + ' Iterator';\n var getInternalCollectionState = internalStateGetterFor(CONSTRUCTOR_NAME);\n var getInternalIteratorState = internalStateGetterFor(ITERATOR_NAME);\n // `{ Map, Set }.prototype.{ keys, values, entries, @@iterator }()` methods\n // https://tc39.es/ecma262/#sec-map.prototype.entries\n // https://tc39.es/ecma262/#sec-map.prototype.keys\n // https://tc39.es/ecma262/#sec-map.prototype.values\n // https://tc39.es/ecma262/#sec-map.prototype-@@iterator\n // https://tc39.es/ecma262/#sec-set.prototype.entries\n // https://tc39.es/ecma262/#sec-set.prototype.keys\n // https://tc39.es/ecma262/#sec-set.prototype.values\n // https://tc39.es/ecma262/#sec-set.prototype-@@iterator\n defineIterator(Constructor, CONSTRUCTOR_NAME, function (iterated, kind) {\n setInternalState(this, {\n type: ITERATOR_NAME,\n target: iterated,\n state: getInternalCollectionState(iterated),\n kind: kind,\n last: null\n });\n }, function () {\n var state = getInternalIteratorState(this);\n var kind = state.kind;\n var entry = state.last;\n // revert to the last existing entry\n while (entry && entry.removed) entry = entry.previous;\n // get next entry\n if (!state.target || !(state.last = entry = entry ? entry.next : state.state.first)) {\n // or finish the iteration\n state.target = null;\n return createIterResultObject(undefined, true);\n }\n // return step by kind\n if (kind === 'keys') return createIterResultObject(entry.key, false);\n if (kind === 'values') return createIterResultObject(entry.value, false);\n return createIterResultObject([entry.key, entry.value], false);\n }, IS_MAP ? 'entries' : 'values', !IS_MAP, true);\n\n // `{ Map, Set }.prototype[@@species]` accessors\n // https://tc39.es/ecma262/#sec-get-map-@@species\n // https://tc39.es/ecma262/#sec-get-set-@@species\n setSpecies(CONSTRUCTOR_NAME);\n }\n};\n", "'use strict';\nvar collection = require('../internals/collection');\nvar collectionStrong = require('../internals/collection-strong');\n\n// `Map` constructor\n// https://tc39.es/ecma262/#sec-map-objects\ncollection('Map', function (init) {\n return function Map() { return init(this, arguments.length ? arguments[0] : undefined); };\n}, collectionStrong);\n", "'use strict';\n// TODO: Remove this module from `core-js@4` since it's replaced to module below\nrequire('../modules/es.map.constructor');\n", "'use strict';\nvar uncurryThis = require('../internals/function-uncurry-this');\n\n// eslint-disable-next-line es/no-map -- safe\nvar MapPrototype = Map.prototype;\n\nmodule.exports = {\n // eslint-disable-next-line es/no-map -- safe\n Map: Map,\n set: uncurryThis(MapPrototype.set),\n get: uncurryThis(MapPrototype.get),\n has: uncurryThis(MapPrototype.has),\n remove: uncurryThis(MapPrototype['delete']),\n proto: MapPrototype\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar aCallable = require('../internals/a-callable');\nvar requireObjectCoercible = require('../internals/require-object-coercible');\nvar iterate = require('../internals/iterate');\nvar MapHelpers = require('../internals/map-helpers');\nvar IS_PURE = require('../internals/is-pure');\nvar fails = require('../internals/fails');\n\nvar Map = MapHelpers.Map;\nvar has = MapHelpers.has;\nvar get = MapHelpers.get;\nvar set = MapHelpers.set;\nvar push = uncurryThis([].push);\n\n// https://bugs.webkit.org/show_bug.cgi?id=271524\nvar DOES_NOT_WORK_WITH_PRIMITIVES = IS_PURE || fails(function () {\n return Map.groupBy('ab', function (it) {\n return it;\n }).get('a').length !== 1;\n});\n\n// `Map.groupBy` method\n// https://tc39.es/ecma262/#sec-map.groupby\n$({ target: 'Map', stat: true, forced: IS_PURE || DOES_NOT_WORK_WITH_PRIMITIVES }, {\n groupBy: function groupBy(items, callbackfn) {\n requireObjectCoercible(items);\n aCallable(callbackfn);\n var map = new Map();\n var k = 0;\n iterate(items, function (value) {\n var key = callbackfn(value, k++);\n if (!has(map, key)) set(map, key, [value]);\n else push(get(map, key), value);\n });\n return map;\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar MapHelpers = require('../internals/map-helpers');\nvar IS_PURE = require('../internals/is-pure');\n\nvar get = MapHelpers.get;\nvar has = MapHelpers.has;\nvar set = MapHelpers.set;\n\n// `Map.prototype.getOrInsert` method\n// https://tc39.es/ecma262/#sec-map.prototype.getorinsert\n$({ target: 'Map', proto: true, real: true, forced: IS_PURE }, {\n getOrInsert: function getOrInsert(key, value) {\n if (has(this, key)) return get(this, key);\n set(this, key, value);\n return value;\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar aCallable = require('../internals/a-callable');\nvar MapHelpers = require('../internals/map-helpers');\nvar IS_PURE = require('../internals/is-pure');\n\nvar get = MapHelpers.get;\nvar has = MapHelpers.has;\nvar set = MapHelpers.set;\n\n// `Map.prototype.getOrInsertComputed` method\n// https://tc39.es/ecma262/#sec-map.prototype.getorinsertcomputed\n$({ target: 'Map', proto: true, real: true, forced: IS_PURE }, {\n getOrInsertComputed: function getOrInsertComputed(key, callbackfn) {\n var hasKey = has(this, key);\n aCallable(callbackfn);\n if (hasKey) return get(this, key);\n // CanonicalizeKeyedCollectionKey\n if (key === 0 && 1 / key === -Infinity) key = 0;\n var value = callbackfn(key);\n set(this, key, value);\n return value;\n }\n});\n", "'use strict';\nvar log = Math.log;\n\n// `Math.log1p` method implementation\n// https://tc39.es/ecma262/#sec-math.log1p\n// eslint-disable-next-line es/no-math-log1p -- safe\nmodule.exports = Math.log1p || function log1p(x) {\n var n = +x;\n return n > -1e-8 && n < 1e-8 ? n - n * n / 2 : log(1 + n);\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar log1p = require('../internals/math-log1p');\n\n// eslint-disable-next-line es/no-math-acosh -- required for testing\nvar $acosh = Math.acosh;\nvar log = Math.log;\nvar sqrt = Math.sqrt;\nvar LN2 = Math.LN2;\n\nvar FORCED = !$acosh\n // V8 bug: https://code.google.com/p/v8/issues/detail?id=3509\n || Math.floor($acosh(Number.MAX_VALUE)) !== 710\n // Tor Browser bug: Math.acosh(Infinity) -> NaN\n || $acosh(Infinity) !== Infinity;\n\n// `Math.acosh` method\n// https://tc39.es/ecma262/#sec-math.acosh\n$({ target: 'Math', stat: true, forced: FORCED }, {\n acosh: function acosh(x) {\n var n = +x;\n return n < 1 ? NaN : n > 94906265.62425156\n ? log(n) + LN2\n : log1p(n - 1 + sqrt(n - 1) * sqrt(n + 1));\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\n\n// eslint-disable-next-line es/no-math-asinh -- required for testing\nvar $asinh = Math.asinh;\nvar log = Math.log;\nvar sqrt = Math.sqrt;\nvar LN2 = Math.LN2;\n// sqrt(2 ** 53) - prevent n * n overflow\nvar SQRT_2_POW_53 = 94906265.62425156;\n\nfunction asinh(x) {\n var n = +x;\n return !isFinite(n) || n === 0 ? n : n < 0 ? -asinh(-n) : n > SQRT_2_POW_53 ? log(n) + LN2 : log(n + sqrt(n * n + 1));\n}\n\nvar FORCED = !($asinh && 1 / $asinh(0) > 0);\n\n// `Math.asinh` method\n// https://tc39.es/ecma262/#sec-math.asinh\n// Tor Browser bug: Math.asinh(0) -> -0\n$({ target: 'Math', stat: true, forced: FORCED }, {\n asinh: asinh\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar log1p = require('../internals/math-log1p');\n\n// eslint-disable-next-line es/no-math-atanh -- required for testing\nvar $atanh = Math.atanh;\n\nvar FORCED = !($atanh && 1 / $atanh(-0) < 0);\n\n// `Math.atanh` method\n// https://tc39.es/ecma262/#sec-math.atanh\n// Tor Browser bug: Math.atanh(-0) -> 0\n$({ target: 'Math', stat: true, forced: FORCED }, {\n atanh: function atanh(x) {\n var n = +x;\n return n === 0 ? n : log1p(2 * n / (1 - n)) / 2;\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar sign = require('../internals/math-sign');\n\nvar abs = Math.abs;\nvar pow = Math.pow;\n\n// `Math.cbrt` method\n// https://tc39.es/ecma262/#sec-math.cbrt\n$({ target: 'Math', stat: true }, {\n cbrt: function cbrt(x) {\n var n = +x;\n return sign(n) * pow(abs(n), 1 / 3);\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\n\nvar floor = Math.floor;\nvar log = Math.log;\nvar LOG2E = Math.LOG2E;\n\n// `Math.clz32` method\n// https://tc39.es/ecma262/#sec-math.clz32\n$({ target: 'Math', stat: true }, {\n clz32: function clz32(x) {\n var n = x >>> 0;\n return n ? 31 - floor(log(n + 0.5) * LOG2E) : 32;\n }\n});\n", "'use strict';\n// eslint-disable-next-line es/no-math-expm1 -- safe\nvar $expm1 = Math.expm1;\nvar exp = Math.exp;\n\n// `Math.expm1` method implementation\n// https://tc39.es/ecma262/#sec-math.expm1\nmodule.exports = (!$expm1\n // Old FF bug\n // eslint-disable-next-line no-loss-of-precision -- required for old engines\n || $expm1(10) > 22025.465794806719 || $expm1(10) < 22025.4657948067165168\n // Tor Browser bug\n || $expm1(-2e-17) !== -2e-17\n) ? function expm1(x) {\n var n = +x;\n return n === 0 ? n : n > -1e-6 && n < 1e-6 ? n + n * n / 2 : exp(n) - 1;\n} : $expm1;\n", "'use strict';\nvar $ = require('../internals/export');\nvar expm1 = require('../internals/math-expm1');\n\n// eslint-disable-next-line es/no-math-cosh -- required for testing\nvar $cosh = Math.cosh;\nvar abs = Math.abs;\nvar E = Math.E;\n\nvar FORCED = !$cosh || $cosh(710) === Infinity;\n\n// `Math.cosh` method\n// https://tc39.es/ecma262/#sec-math.cosh\n$({ target: 'Math', stat: true, forced: FORCED }, {\n cosh: function cosh(x) {\n var t = expm1(abs(x) - 1) + 1;\n return (t + 1 / (t * E * E)) * (E / 2);\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar expm1 = require('../internals/math-expm1');\n\n// `Math.expm1` method\n// https://tc39.es/ecma262/#sec-math.expm1\n// eslint-disable-next-line es/no-math-expm1 -- required for testing\n$({ target: 'Math', stat: true, forced: expm1 !== Math.expm1 }, { expm1: expm1 });\n", "'use strict';\nvar $ = require('../internals/export');\nvar fround = require('../internals/math-fround');\n\n// `Math.fround` method\n// https://tc39.es/ecma262/#sec-math.fround\n$({ target: 'Math', stat: true }, { fround: fround });\n", "'use strict';\nvar $ = require('../internals/export');\nvar floatRound = require('../internals/math-float-round');\n\nvar FLOAT16_EPSILON = 0.0009765625;\nvar FLOAT16_MAX_VALUE = 65504;\nvar FLOAT16_MIN_VALUE = 6.103515625e-05;\n\n// `Math.f16round` method\n// https://tc39.es/ecma262/#sec-math.f16round\n$({ target: 'Math', stat: true }, {\n f16round: function f16round(x) {\n return floatRound(x, FLOAT16_EPSILON, FLOAT16_MAX_VALUE, FLOAT16_MIN_VALUE);\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\n\n// eslint-disable-next-line es/no-math-hypot -- required for testing\nvar $hypot = Math.hypot;\nvar abs = Math.abs;\nvar sqrt = Math.sqrt;\n\n// Chrome 77 bug\n// https://bugs.chromium.org/p/v8/issues/detail?id=9546\nvar FORCED = !!$hypot && $hypot(Infinity, NaN) !== Infinity;\n\n// `Math.hypot` method\n// https://tc39.es/ecma262/#sec-math.hypot\n$({ target: 'Math', stat: true, arity: 2, forced: FORCED }, {\n // eslint-disable-next-line no-unused-vars -- required for `.length`\n hypot: function hypot(value1, value2) {\n var sum = 0;\n var i = 0;\n var aLen = arguments.length;\n var larg = 0;\n var arg, div;\n while (i < aLen) {\n arg = abs(arguments[i++]);\n if (larg < arg) {\n div = larg / arg;\n sum = sum * div * div + 1;\n larg = arg;\n } else if (arg > 0) {\n div = arg / larg;\n sum += div * div;\n } else sum += arg;\n }\n return larg === Infinity ? Infinity : larg * sqrt(sum);\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar fails = require('../internals/fails');\n\n// eslint-disable-next-line es/no-math-imul -- required for testing\nvar $imul = Math.imul;\n\nvar FORCED = fails(function () {\n return $imul(0xFFFFFFFF, 5) !== -5 || $imul.length !== 2;\n});\n\n// `Math.imul` method\n// https://tc39.es/ecma262/#sec-math.imul\n// some WebKit versions fails with big numbers, some has wrong arity\n$({ target: 'Math', stat: true, forced: FORCED }, {\n imul: function imul(x, y) {\n var UINT16 = 0xFFFF;\n var xn = +x;\n var yn = +y;\n var xl = UINT16 & xn;\n var yl = UINT16 & yn;\n return 0 | xl * yl + ((UINT16 & xn >>> 16) * yl + xl * (UINT16 & yn >>> 16) << 16 >>> 0);\n }\n});\n", "'use strict';\nvar log = Math.log;\nvar LOG10E = Math.LOG10E;\n\n// eslint-disable-next-line es/no-math-log10 -- safe\nmodule.exports = Math.log10 || function log10(x) {\n return log(x) * LOG10E;\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar log10 = require('../internals/math-log10');\n\n// `Math.log10` method\n// https://tc39.es/ecma262/#sec-math.log10\n$({ target: 'Math', stat: true }, {\n log10: log10\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar log1p = require('../internals/math-log1p');\n\n// `Math.log1p` method\n// https://tc39.es/ecma262/#sec-math.log1p\n$({ target: 'Math', stat: true }, { log1p: log1p });\n", "'use strict';\nvar $ = require('../internals/export');\nvar log2 = require('../internals/math-log2');\n\n// `Math.log2` method\n// https://tc39.es/ecma262/#sec-math.log2\n$({ target: 'Math', stat: true }, {\n log2: log2\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar sign = require('../internals/math-sign');\n\n// `Math.sign` method\n// https://tc39.es/ecma262/#sec-math.sign\n$({ target: 'Math', stat: true }, {\n sign: sign\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar fails = require('../internals/fails');\nvar expm1 = require('../internals/math-expm1');\n\nvar abs = Math.abs;\nvar exp = Math.exp;\nvar E = Math.E;\n\nvar FORCED = fails(function () {\n // eslint-disable-next-line es/no-math-sinh -- required for testing\n return Math.sinh(-2e-17) !== -2e-17;\n});\n\n// `Math.sinh` method\n// https://tc39.es/ecma262/#sec-math.sinh\n// V8 near Chromium 38 has a problem with very small numbers\n$({ target: 'Math', stat: true, forced: FORCED }, {\n sinh: function sinh(x) {\n var n = +x;\n return abs(n) < 1 ? (expm1(n) - expm1(-n)) / 2 : (exp(n - 1) - exp(-n - 1)) * (E / 2);\n }\n});\n", "'use strict';\n// based on Shewchuk's algorithm for exactly floating point addition\n// adapted from https://github.com/tc39/proposal-math-sum/blob/3513d58323a1ae25560e8700aa5294500c6c9287/polyfill/polyfill.mjs\nvar $ = require('../internals/export');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar iterate = require('../internals/iterate');\n\nvar $RangeError = RangeError;\nvar $TypeError = TypeError;\nvar $Infinity = Infinity;\nvar $NaN = NaN;\nvar abs = Math.abs;\nvar pow = Math.pow;\nvar push = uncurryThis([].push);\n\nvar POW_2_1023 = pow(2, 1023);\nvar MAX_SAFE_INTEGER = pow(2, 53) - 1; // 2 ** 53 - 1 === 9007199254740991\nvar MAX_DOUBLE = Number.MAX_VALUE; // 2 ** 1024 - 2 ** (1023 - 52) === 1.79769313486231570815e+308\nvar MAX_ULP = pow(2, 971); // 2 ** (1023 - 52) === 1.99584030953471981166e+292\n\nvar NOT_A_NUMBER = {};\nvar MINUS_INFINITY = {};\nvar PLUS_INFINITY = {};\nvar MINUS_ZERO = {};\nvar FINITE = {};\n\n// prerequisite: abs(x) >= abs(y)\nvar twosum = function (x, y) {\n var hi = x + y;\n var lo = y - (hi - x);\n return { hi: hi, lo: lo };\n};\n\n// `Math.sumPrecise` method\n// https://tc39.es/ecma262/#sec-math.sumprecise\n$({ target: 'Math', stat: true }, {\n // eslint-disable-next-line max-statements -- ok\n sumPrecise: function sumPrecise(items) {\n var numbers = [];\n var count = 0;\n var state = MINUS_ZERO;\n\n iterate(items, function (n) {\n if (++count > MAX_SAFE_INTEGER) throw new $RangeError('Maximum allowed index exceeded');\n if (typeof n != 'number') throw new $TypeError('Value is not a number');\n if (state !== NOT_A_NUMBER) {\n // eslint-disable-next-line no-self-compare -- NaN check\n if (n !== n) state = NOT_A_NUMBER;\n else if (n === $Infinity) state = state === MINUS_INFINITY ? NOT_A_NUMBER : PLUS_INFINITY;\n else if (n === -$Infinity) state = state === PLUS_INFINITY ? NOT_A_NUMBER : MINUS_INFINITY;\n else if ((n !== 0 || (1 / n) === $Infinity) && (state === MINUS_ZERO || state === FINITE)) {\n state = FINITE;\n push(numbers, n);\n }\n }\n });\n\n switch (state) {\n case NOT_A_NUMBER: return $NaN;\n case MINUS_INFINITY: return -$Infinity;\n case PLUS_INFINITY: return $Infinity;\n case MINUS_ZERO: return -0;\n }\n\n var partials = [];\n var overflow = 0; // conceptually 2 ** 1024 times this value; the final partial is biased by this amount\n var x, y, sum, hi, lo, tmp;\n\n for (var i = 0; i < numbers.length; i++) {\n x = numbers[i];\n var actuallyUsedPartials = 0;\n for (var j = 0; j < partials.length; j++) {\n y = partials[j];\n if (abs(x) < abs(y)) {\n tmp = x;\n x = y;\n y = tmp;\n }\n sum = twosum(x, y);\n hi = sum.hi;\n lo = sum.lo;\n if (abs(hi) === $Infinity) {\n var sign = hi === $Infinity ? 1 : -1;\n overflow += sign;\n\n x = (x - (sign * POW_2_1023)) - (sign * POW_2_1023);\n if (abs(x) < abs(y)) {\n tmp = x;\n x = y;\n y = tmp;\n }\n sum = twosum(x, y);\n hi = sum.hi;\n lo = sum.lo;\n }\n if (lo !== 0) partials[actuallyUsedPartials++] = lo;\n x = hi;\n }\n partials.length = actuallyUsedPartials;\n if (x !== 0) push(partials, x);\n }\n\n // compute the exact sum of partials, stopping once we lose precision\n var n = partials.length - 1;\n hi = 0;\n lo = 0;\n\n if (overflow !== 0) {\n var next = n >= 0 ? partials[n] : 0;\n n--;\n if (abs(overflow) > 1 || (overflow > 0 && next > 0) || (overflow < 0 && next < 0)) {\n return overflow > 0 ? $Infinity : -$Infinity;\n }\n // here we actually have to do the arithmetic\n // drop a factor of 2 so we can do it without overflow\n // assert(abs(overflow) === 1)\n sum = twosum(overflow * POW_2_1023, next / 2);\n hi = sum.hi;\n lo = sum.lo;\n lo *= 2;\n if (abs(2 * hi) === $Infinity) {\n // rounding to the maximum value\n if (hi > 0) {\n return (hi === POW_2_1023 && lo === -(MAX_ULP / 2) && n >= 0 && partials[n] < 0) ? MAX_DOUBLE : $Infinity;\n } return (hi === -POW_2_1023 && lo === (MAX_ULP / 2) && n >= 0 && partials[n] > 0) ? -MAX_DOUBLE : -$Infinity;\n }\n\n if (lo !== 0) {\n partials[++n] = lo;\n lo = 0;\n }\n\n hi *= 2;\n }\n\n while (n >= 0) {\n sum = twosum(hi, partials[n--]);\n hi = sum.hi;\n lo = sum.lo;\n if (lo !== 0) break;\n }\n\n if (n >= 0 && ((lo < 0 && partials[n] < 0) || (lo > 0 && partials[n] > 0))) {\n y = lo * 2;\n x = hi + y;\n if (y === x - hi) hi = x;\n }\n\n return hi;\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar expm1 = require('../internals/math-expm1');\n\nvar exp = Math.exp;\n\n// `Math.tanh` method\n// https://tc39.es/ecma262/#sec-math.tanh\n$({ target: 'Math', stat: true }, {\n tanh: function tanh(x) {\n var n = +x;\n var a = expm1(n);\n var b = expm1(-n);\n return a === Infinity ? 1 : b === Infinity ? -1 : (a - b) / (exp(n) + exp(-n));\n }\n});\n", "'use strict';\nvar setToStringTag = require('../internals/set-to-string-tag');\n\n// Math[@@toStringTag] property\n// https://tc39.es/ecma262/#sec-math-@@tostringtag\nsetToStringTag(Math, 'Math', true);\n", "'use strict';\nvar $ = require('../internals/export');\nvar trunc = require('../internals/math-trunc');\n\n// `Math.trunc` method\n// https://tc39.es/ecma262/#sec-math.trunc\n$({ target: 'Math', stat: true }, {\n trunc: trunc\n});\n", "'use strict';\nvar uncurryThis = require('../internals/function-uncurry-this');\n\n// `thisNumberValue` abstract operation\n// https://tc39.es/ecma262/#sec-thisnumbervalue\nmodule.exports = uncurryThis(1.1.valueOf);\n", "'use strict';\n// a string of all valid unicode whitespaces\nmodule.exports = '\\u0009\\u000A\\u000B\\u000C\\u000D\\u0020\\u00A0\\u1680\\u2000\\u2001\\u2002' +\n '\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200A\\u202F\\u205F\\u3000\\u2028\\u2029\\uFEFF';\n", "'use strict';\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar requireObjectCoercible = require('../internals/require-object-coercible');\nvar toString = require('../internals/to-string');\nvar whitespaces = require('../internals/whitespaces');\n\nvar replace = uncurryThis(''.replace);\nvar ltrim = RegExp('^[' + whitespaces + ']+');\nvar rtrim = RegExp('(^|[^' + whitespaces + '])[' + whitespaces + ']+$');\n\n// `String.prototype.{ trim, trimStart, trimEnd, trimLeft, trimRight }` methods implementation\nvar createMethod = function (TYPE) {\n return function ($this) {\n var string = toString(requireObjectCoercible($this));\n if (TYPE & 1) string = replace(string, ltrim, '');\n if (TYPE & 2) string = replace(string, rtrim, '$1');\n return string;\n };\n};\n\nmodule.exports = {\n // `String.prototype.{ trimLeft, trimStart }` methods\n // https://tc39.es/ecma262/#sec-string.prototype.trimstart\n start: createMethod(1),\n // `String.prototype.{ trimRight, trimEnd }` methods\n // https://tc39.es/ecma262/#sec-string.prototype.trimend\n end: createMethod(2),\n // `String.prototype.trim` method\n // https://tc39.es/ecma262/#sec-string.prototype.trim\n trim: createMethod(3)\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar IS_PURE = require('../internals/is-pure');\nvar DESCRIPTORS = require('../internals/descriptors');\nvar globalThis = require('../internals/global-this');\nvar path = require('../internals/path');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar isForced = require('../internals/is-forced');\nvar hasOwn = require('../internals/has-own-property');\nvar inheritIfRequired = require('../internals/inherit-if-required');\nvar isPrototypeOf = require('../internals/object-is-prototype-of');\nvar isSymbol = require('../internals/is-symbol');\nvar toPrimitive = require('../internals/to-primitive');\nvar fails = require('../internals/fails');\nvar getOwnPropertyNames = require('../internals/object-get-own-property-names').f;\nvar getOwnPropertyDescriptor = require('../internals/object-get-own-property-descriptor').f;\nvar defineProperty = require('../internals/object-define-property').f;\nvar thisNumberValue = require('../internals/this-number-value');\nvar trim = require('../internals/string-trim').trim;\n\nvar NUMBER = 'Number';\nvar NativeNumber = globalThis[NUMBER];\nvar PureNumberNamespace = path[NUMBER];\nvar NumberPrototype = NativeNumber.prototype;\nvar TypeError = globalThis.TypeError;\nvar stringSlice = uncurryThis(''.slice);\nvar charCodeAt = uncurryThis(''.charCodeAt);\n\n// `ToNumeric` abstract operation\n// https://tc39.es/ecma262/#sec-tonumeric\nvar toNumeric = function (value) {\n var primValue = toPrimitive(value, 'number');\n return typeof primValue == 'bigint' ? primValue : toNumber(primValue);\n};\n\n// `ToNumber` abstract operation\n// https://tc39.es/ecma262/#sec-tonumber\nvar toNumber = function (argument) {\n var it = toPrimitive(argument, 'number');\n var first, third, radix, maxCode, digits, length, index, code;\n if (isSymbol(it)) throw new TypeError('Cannot convert a Symbol value to a number');\n if (typeof it == 'string' && it.length > 2) {\n it = trim(it);\n first = charCodeAt(it, 0);\n if (first === 43 || first === 45) {\n third = charCodeAt(it, 2);\n if (third === 88 || third === 120) return NaN; // Number('+0x1') should be NaN, old V8 fix\n } else if (first === 48) {\n switch (charCodeAt(it, 1)) {\n // fast equal of /^0b[01]+$/i\n case 66:\n case 98:\n radix = 2;\n maxCode = 49;\n break;\n // fast equal of /^0o[0-7]+$/i\n case 79:\n case 111:\n radix = 8;\n maxCode = 55;\n break;\n default:\n return +it;\n }\n digits = stringSlice(it, 2);\n length = digits.length;\n for (index = 0; index < length; index++) {\n code = charCodeAt(digits, index);\n // parseInt parses a string to a first unavailable symbol\n // but ToNumber should return NaN if a string contains unavailable symbols\n if (code < 48 || code > maxCode) return NaN;\n } return parseInt(digits, radix);\n }\n } return +it;\n};\n\nvar FORCED = isForced(NUMBER, !NativeNumber(' 0o1') || !NativeNumber('0b1') || NativeNumber('+0x1'));\n\nvar calledWithNew = function (dummy) {\n // includes check on 1..constructor(foo) case\n return isPrototypeOf(NumberPrototype, dummy) && fails(function () { thisNumberValue(dummy); });\n};\n\n// `Number` constructor\n// https://tc39.es/ecma262/#sec-number-constructor\nvar NumberWrapper = function Number(value) {\n var n = arguments.length < 1 ? 0 : NativeNumber(toNumeric(value));\n return calledWithNew(this) ? inheritIfRequired(Object(n), this, NumberWrapper) : n;\n};\n\nNumberWrapper.prototype = NumberPrototype;\nif (FORCED && !IS_PURE) NumberPrototype.constructor = NumberWrapper;\n\n$({ global: true, constructor: true, wrap: true, forced: FORCED }, {\n Number: NumberWrapper\n});\n\n// Use `internal/copy-constructor-properties` helper in `core-js@4`\nvar copyConstructorProperties = function (target, source) {\n for (var keys = DESCRIPTORS ? getOwnPropertyNames(source) : (\n // ES3:\n 'MAX_VALUE,MIN_VALUE,NaN,NEGATIVE_INFINITY,POSITIVE_INFINITY,' +\n // ES2015 (in case, if modules with ES2015 Number statics required before):\n 'EPSILON,MAX_SAFE_INTEGER,MIN_SAFE_INTEGER,isFinite,isInteger,isNaN,isSafeInteger,parseFloat,parseInt,' +\n // ESNext\n 'fromString,range'\n ).split(','), j = 0, key; keys.length > j; j++) {\n if (hasOwn(source, key = keys[j]) && !hasOwn(target, key)) {\n defineProperty(target, key, getOwnPropertyDescriptor(source, key));\n }\n }\n};\n\nif (IS_PURE && PureNumberNamespace) copyConstructorProperties(path[NUMBER], PureNumberNamespace);\nif (FORCED || IS_PURE) copyConstructorProperties(path[NUMBER], NativeNumber);\n", "'use strict';\nvar $ = require('../internals/export');\n\n// `Number.EPSILON` constant\n// https://tc39.es/ecma262/#sec-number.epsilon\n$({ target: 'Number', stat: true, nonConfigurable: true, nonWritable: true }, {\n EPSILON: Math.pow(2, -52)\n});\n", "'use strict';\nvar globalThis = require('../internals/global-this');\n\nvar globalIsFinite = globalThis.isFinite;\n\n// `Number.isFinite` method\n// https://tc39.es/ecma262/#sec-number.isfinite\n// eslint-disable-next-line es/no-number-isfinite -- safe\nmodule.exports = Number.isFinite || function isFinite(it) {\n return typeof it == 'number' && globalIsFinite(it);\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar numberIsFinite = require('../internals/number-is-finite');\n\n// `Number.isFinite` method\n// https://tc39.es/ecma262/#sec-number.isfinite\n$({ target: 'Number', stat: true }, { isFinite: numberIsFinite });\n", "'use strict';\nvar isObject = require('../internals/is-object');\n\nvar floor = Math.floor;\n\n// `IsIntegralNumber` abstract operation\n// https://tc39.es/ecma262/#sec-isintegralnumber\n// eslint-disable-next-line es/no-number-isinteger -- safe\nmodule.exports = Number.isInteger || function isInteger(it) {\n return !isObject(it) && isFinite(it) && floor(it) === it;\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar isIntegralNumber = require('../internals/is-integral-number');\n\n// `Number.isInteger` method\n// https://tc39.es/ecma262/#sec-number.isinteger\n$({ target: 'Number', stat: true }, {\n isInteger: isIntegralNumber\n});\n", "'use strict';\nvar $ = require('../internals/export');\n\n// `Number.isNaN` method\n// https://tc39.es/ecma262/#sec-number.isnan\n$({ target: 'Number', stat: true }, {\n isNaN: function isNaN(number) {\n // eslint-disable-next-line no-self-compare -- NaN check\n return number !== number;\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar isIntegralNumber = require('../internals/is-integral-number');\n\nvar abs = Math.abs;\n\n// `Number.isSafeInteger` method\n// https://tc39.es/ecma262/#sec-number.issafeinteger\n$({ target: 'Number', stat: true }, {\n isSafeInteger: function isSafeInteger(number) {\n return isIntegralNumber(number) && abs(number) <= 0x1FFFFFFFFFFFFF;\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\n\n// `Number.MAX_SAFE_INTEGER` constant\n// https://tc39.es/ecma262/#sec-number.max_safe_integer\n$({ target: 'Number', stat: true, nonConfigurable: true, nonWritable: true }, {\n MAX_SAFE_INTEGER: 0x1FFFFFFFFFFFFF\n});\n", "'use strict';\nvar $ = require('../internals/export');\n\n// `Number.MIN_SAFE_INTEGER` constant\n// https://tc39.es/ecma262/#sec-number.min_safe_integer\n$({ target: 'Number', stat: true, nonConfigurable: true, nonWritable: true }, {\n MIN_SAFE_INTEGER: -0x1FFFFFFFFFFFFF\n});\n", "'use strict';\nvar globalThis = require('../internals/global-this');\nvar fails = require('../internals/fails');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar toString = require('../internals/to-string');\nvar trim = require('../internals/string-trim').trim;\nvar whitespaces = require('../internals/whitespaces');\n\nvar charAt = uncurryThis(''.charAt);\nvar $parseFloat = globalThis.parseFloat;\nvar Symbol = globalThis.Symbol;\nvar ITERATOR = Symbol && Symbol.iterator;\nvar FORCED = 1 / $parseFloat(whitespaces + '-0') !== -Infinity\n // MS Edge 18- broken with boxed symbols\n || (ITERATOR && !fails(function () { $parseFloat(Object(ITERATOR)); }));\n\n// `parseFloat` method\n// https://tc39.es/ecma262/#sec-parsefloat-string\nmodule.exports = FORCED ? function parseFloat(string) {\n var trimmedString = trim(toString(string));\n var result = $parseFloat(trimmedString);\n return result === 0 && charAt(trimmedString, 0) === '-' ? -0 : result;\n} : $parseFloat;\n", "'use strict';\nvar $ = require('../internals/export');\nvar parseFloat = require('../internals/number-parse-float');\n\n// `Number.parseFloat` method\n// https://tc39.es/ecma262/#sec-number.parseFloat\n// eslint-disable-next-line es/no-number-parsefloat -- required for testing\n$({ target: 'Number', stat: true, forced: Number.parseFloat !== parseFloat }, {\n parseFloat: parseFloat\n});\n", "'use strict';\nvar globalThis = require('../internals/global-this');\nvar fails = require('../internals/fails');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar toString = require('../internals/to-string');\nvar trim = require('../internals/string-trim').trim;\nvar whitespaces = require('../internals/whitespaces');\n\nvar $parseInt = globalThis.parseInt;\nvar Symbol = globalThis.Symbol;\nvar ITERATOR = Symbol && Symbol.iterator;\nvar hex = /^[+-]?0x/i;\nvar exec = uncurryThis(hex.exec);\nvar FORCED = $parseInt(whitespaces + '08') !== 8 || $parseInt(whitespaces + '0x16') !== 22\n // MS Edge 18- broken with boxed symbols\n || (ITERATOR && !fails(function () { $parseInt(Object(ITERATOR)); }));\n\n// `parseInt` method\n// https://tc39.es/ecma262/#sec-parseint-string-radix\nmodule.exports = FORCED ? function parseInt(string, radix) {\n var S = trim(toString(string));\n return $parseInt(S, (radix >>> 0) || (exec(hex, S) ? 16 : 10));\n} : $parseInt;\n", "'use strict';\nvar $ = require('../internals/export');\nvar parseInt = require('../internals/number-parse-int');\n\n// `Number.parseInt` method\n// https://tc39.es/ecma262/#sec-number.parseint\n// eslint-disable-next-line es/no-number-parseint -- required for testing\n$({ target: 'Number', stat: true, forced: Number.parseInt !== parseInt }, {\n parseInt: parseInt\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar toIntegerOrInfinity = require('../internals/to-integer-or-infinity');\nvar thisNumberValue = require('../internals/this-number-value');\nvar $repeat = require('../internals/string-repeat');\nvar log10 = require('../internals/math-log10');\nvar fails = require('../internals/fails');\n\nvar $RangeError = RangeError;\nvar $String = String;\nvar $isFinite = isFinite;\nvar abs = Math.abs;\nvar floor = Math.floor;\nvar pow = Math.pow;\nvar round = Math.round;\nvar nativeToExponential = uncurryThis(1.1.toExponential);\nvar repeat = uncurryThis($repeat);\nvar stringSlice = uncurryThis(''.slice);\n\nvar POW_10_308 = pow(10, 308);\n\n// Edge 17-\nvar ROUNDS_PROPERLY = nativeToExponential(-6.9e-11, 4) === '-6.9000e-11'\n // IE11- && Edge 14-\n && nativeToExponential(1.255, 2) === '1.25e+0'\n // FF86-, V8 ~ Chrome 49-50\n && nativeToExponential(12345, 3) === '1.235e+4'\n // FF86-, V8 ~ Chrome 49-50\n && nativeToExponential(25, 0) === '3e+1';\n\n// IE8-\nvar throwsOnInfinityFraction = function () {\n return fails(function () {\n nativeToExponential(1, Infinity);\n }) && fails(function () {\n nativeToExponential(1, -Infinity);\n });\n};\n\n// Safari <11 && FF <50\nvar properNonFiniteThisCheck = function () {\n return !fails(function () {\n nativeToExponential(Infinity, Infinity);\n nativeToExponential(NaN, Infinity);\n });\n};\n\nvar FORCED = !ROUNDS_PROPERLY || !throwsOnInfinityFraction() || !properNonFiniteThisCheck();\n\n// `Number.prototype.toExponential` method\n// https://tc39.es/ecma262/#sec-number.prototype.toexponential\n$({ target: 'Number', proto: true, forced: FORCED }, {\n toExponential: function toExponential(fractionDigits) {\n var x = thisNumberValue(this);\n if (fractionDigits === undefined) return nativeToExponential(x);\n var f = toIntegerOrInfinity(fractionDigits);\n if (!$isFinite(x)) return String(x);\n // TODO: ES2018 increased the maximum number of fraction digits to 100, need to improve the implementation\n if (f < 0 || f > 20) throw new $RangeError('Incorrect fraction digits');\n if (ROUNDS_PROPERLY) return nativeToExponential(x, f);\n var s = '';\n var m, e, c, d, l, n, xScaled;\n if (x < 0) {\n s = '-';\n x = -x;\n }\n if (x === 0) {\n e = 0;\n m = repeat('0', f + 1);\n } else {\n // TODO: improve accuracy with big fraction digits\n l = log10(x);\n e = floor(l);\n // compute x / pow(10, e - f) and round, avoiding underflow/overflow\n if (f - e >= 308) {\n // pow(10, e - f) would underflow to a subnormal or zero; split computation\n xScaled = x * POW_10_308 * pow(10, f - e - 308);\n } else {\n xScaled = x / pow(10, e - f);\n }\n n = round(xScaled);\n // correct tie-breaking: round half up\n // avoids `2 * x` overflow for values near MAX_VALUE\n if (xScaled - n >= 0.5) {\n n += 1;\n }\n if (n >= pow(10, f + 1)) {\n n /= 10;\n e += 1;\n }\n m = $String(n);\n }\n if (f !== 0) {\n m = stringSlice(m, 0, 1) + '.' + stringSlice(m, 1);\n }\n if (e === 0) {\n c = '+';\n d = '0';\n } else {\n c = e > 0 ? '+' : '-';\n d = $String(abs(e));\n }\n m += 'e' + c + d;\n return s + m;\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar toIntegerOrInfinity = require('../internals/to-integer-or-infinity');\nvar thisNumberValue = require('../internals/this-number-value');\nvar $repeat = require('../internals/string-repeat');\nvar fails = require('../internals/fails');\n\nvar $RangeError = RangeError;\nvar $String = String;\nvar floor = Math.floor;\nvar repeat = uncurryThis($repeat);\nvar stringSlice = uncurryThis(''.slice);\nvar nativeToFixed = uncurryThis(1.1.toFixed);\n\nvar pow = function (x, n, acc) {\n return n === 0 ? acc : n % 2 === 1 ? pow(x, n - 1, acc * x) : pow(x * x, n / 2, acc);\n};\n\nvar log = function (x) {\n var n = 0;\n var x2 = x;\n while (x2 >= 4096) {\n n += 12;\n x2 /= 4096;\n }\n while (x2 >= 2) {\n n += 1;\n x2 /= 2;\n } return n;\n};\n\nvar multiply = function (data, n, c) {\n var index = -1;\n var c2 = c;\n while (++index < 6) {\n c2 += n * data[index];\n data[index] = c2 % 1e7;\n c2 = floor(c2 / 1e7);\n }\n};\n\nvar divide = function (data, n) {\n var index = 6;\n var c = 0;\n while (--index >= 0) {\n c += data[index];\n data[index] = floor(c / n);\n c = (c % n) * 1e7;\n }\n};\n\nvar dataToString = function (data) {\n var index = 6;\n var s = '';\n while (--index >= 0) {\n if (s !== '' || index === 0 || data[index] !== 0) {\n var t = $String(data[index]);\n s = s === '' ? t : s + repeat('0', 7 - t.length) + t;\n }\n } return s;\n};\n\nvar FORCED = fails(function () {\n return nativeToFixed(0.00008, 3) !== '0.000' ||\n nativeToFixed(0.9, 0) !== '1' ||\n nativeToFixed(1.255, 2) !== '1.25' ||\n nativeToFixed(1000000000000000128.0, 0) !== '1000000000000000128';\n}) || !fails(function () {\n // V8 ~ Android 4.3-\n nativeToFixed({});\n});\n\n// `Number.prototype.toFixed` method\n// https://tc39.es/ecma262/#sec-number.prototype.tofixed\n$({ target: 'Number', proto: true, forced: FORCED }, {\n toFixed: function toFixed(fractionDigits) {\n var number = thisNumberValue(this);\n var fractDigits = toIntegerOrInfinity(fractionDigits);\n var data = [0, 0, 0, 0, 0, 0];\n var sign = '';\n var result = '0';\n var e, z, j, k;\n\n // TODO: ES2018 increased the maximum number of fraction digits to 100, need to improve the implementation\n if (fractDigits < 0 || fractDigits > 20) throw new $RangeError('Incorrect fraction digits');\n // eslint-disable-next-line no-self-compare -- NaN check\n if (number !== number) return 'NaN';\n if (number <= -1e21 || number >= 1e21) return $String(number);\n if (number < 0) {\n sign = '-';\n number = -number;\n }\n if (number > 1e-21) {\n e = log(number * pow(2, 69, 1)) - 69;\n z = e < 0 ? number * pow(2, -e, 1) : number / pow(2, e, 1);\n z *= 0x10000000000000;\n e = 52 - e;\n if (e > 0) {\n multiply(data, 0, z);\n j = fractDigits;\n while (j >= 7) {\n multiply(data, 1e7, 0);\n j -= 7;\n }\n multiply(data, pow(10, j, 1), 0);\n j = e - 1;\n while (j >= 23) {\n divide(data, 1 << 23);\n j -= 23;\n }\n divide(data, 1 << j);\n multiply(data, 1, 1);\n divide(data, 2);\n result = dataToString(data);\n } else {\n multiply(data, 0, z);\n multiply(data, 1 << -e, 0);\n result = dataToString(data) + repeat('0', fractDigits);\n }\n }\n if (fractDigits > 0) {\n k = result.length;\n result = sign + (k <= fractDigits\n ? '0.' + repeat('0', fractDigits - k) + result\n : stringSlice(result, 0, k - fractDigits) + '.' + stringSlice(result, k - fractDigits));\n } else {\n result = sign + result;\n } return result;\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar fails = require('../internals/fails');\nvar thisNumberValue = require('../internals/this-number-value');\n\nvar nativeToPrecision = uncurryThis(1.1.toPrecision);\n\nvar FORCED = fails(function () {\n // IE7-\n return nativeToPrecision(1, undefined) !== '1';\n}) || !fails(function () {\n // V8 ~ Android 4.3-\n nativeToPrecision({});\n});\n\n// `Number.prototype.toPrecision` method\n// https://tc39.es/ecma262/#sec-number.prototype.toprecision\n$({ target: 'Number', proto: true, forced: FORCED }, {\n toPrecision: function toPrecision(precision) {\n return precision === undefined\n ? nativeToPrecision(thisNumberValue(this))\n : nativeToPrecision(thisNumberValue(this), precision);\n }\n});\n", "'use strict';\nvar DESCRIPTORS = require('../internals/descriptors');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar call = require('../internals/function-call');\nvar fails = require('../internals/fails');\nvar objectKeys = require('../internals/object-keys');\nvar getOwnPropertySymbolsModule = require('../internals/object-get-own-property-symbols');\nvar propertyIsEnumerableModule = require('../internals/object-property-is-enumerable');\nvar toObject = require('../internals/to-object');\nvar IndexedObject = require('../internals/indexed-object');\n\n// eslint-disable-next-line es/no-object-assign -- safe\nvar $assign = Object.assign;\n// eslint-disable-next-line es/no-object-defineproperty -- required for testing\nvar defineProperty = Object.defineProperty;\nvar concat = uncurryThis([].concat);\n\n// `Object.assign` method\n// https://tc39.es/ecma262/#sec-object.assign\nmodule.exports = !$assign || fails(function () {\n // should have correct order of operations (Edge bug)\n if (DESCRIPTORS && $assign({ b: 1 }, $assign(defineProperty({}, 'a', {\n enumerable: true,\n get: function () {\n defineProperty(this, 'b', {\n value: 3,\n enumerable: false\n });\n }\n }), { b: 2 })).b !== 1) return true;\n // should work with symbols and should have deterministic property order (V8 bug)\n var A = {};\n var B = {};\n // eslint-disable-next-line es/no-symbol -- safe\n var symbol = Symbol('assign detection');\n var alphabet = 'abcdefghijklmnopqrst';\n A[symbol] = 7;\n // eslint-disable-next-line es/no-array-prototype-foreach -- safe\n alphabet.split('').forEach(function (chr) { B[chr] = chr; });\n return $assign({}, A)[symbol] !== 7 || objectKeys($assign({}, B)).join('') !== alphabet;\n}) ? function assign(target, source) { // eslint-disable-line no-unused-vars -- required for `.length`\n var T = toObject(target);\n var argumentsLength = arguments.length;\n var index = 1;\n var getOwnPropertySymbols = getOwnPropertySymbolsModule.f;\n var propertyIsEnumerable = propertyIsEnumerableModule.f;\n while (argumentsLength > index) {\n var S = IndexedObject(arguments[index++]);\n var keys = getOwnPropertySymbols ? concat(objectKeys(S), getOwnPropertySymbols(S)) : objectKeys(S);\n var length = keys.length;\n var j = 0;\n var key;\n while (length > j) {\n key = keys[j++];\n if (!DESCRIPTORS || call(propertyIsEnumerable, S, key)) T[key] = S[key];\n }\n } return T;\n} : $assign;\n", "'use strict';\nvar $ = require('../internals/export');\nvar assign = require('../internals/object-assign');\n\n// `Object.assign` method\n// https://tc39.es/ecma262/#sec-object.assign\n// eslint-disable-next-line es/no-object-assign -- required for testing\n$({ target: 'Object', stat: true, arity: 2, forced: Object.assign !== assign }, {\n assign: assign\n});\n", "'use strict';\n// TODO: Remove from `core-js@4`\nvar $ = require('../internals/export');\nvar DESCRIPTORS = require('../internals/descriptors');\nvar create = require('../internals/object-create');\n\n// `Object.create` method\n// https://tc39.es/ecma262/#sec-object.create\n$({ target: 'Object', stat: true, sham: !DESCRIPTORS }, {\n create: create\n});\n", "'use strict';\n/* eslint-disable no-undef, no-useless-call, sonarjs/no-reference-error -- required for testing */\n/* eslint-disable es/no-legacy-object-prototype-accessor-methods -- required for testing */\nvar IS_PURE = require('../internals/is-pure');\nvar globalThis = require('../internals/global-this');\nvar fails = require('../internals/fails');\nvar WEBKIT = require('../internals/environment-webkit-version');\n\n// Forced replacement object prototype accessors methods\nmodule.exports = IS_PURE || !fails(function () {\n // This feature detection crashes old WebKit\n // https://github.com/zloirock/core-js/issues/232\n if (WEBKIT && WEBKIT < 535) return;\n var key = Math.random();\n // In FF throws only define methods\n __defineSetter__.call(null, key, function () { /* empty */ });\n delete globalThis[key];\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar DESCRIPTORS = require('../internals/descriptors');\nvar FORCED = require('../internals/object-prototype-accessors-forced');\nvar aCallable = require('../internals/a-callable');\nvar toObject = require('../internals/to-object');\nvar definePropertyModule = require('../internals/object-define-property');\n\n// `Object.prototype.__defineGetter__` method\n// https://tc39.es/ecma262/#sec-object.prototype.__defineGetter__\nif (DESCRIPTORS) {\n $({ target: 'Object', proto: true, forced: FORCED }, {\n __defineGetter__: function __defineGetter__(P, getter) {\n definePropertyModule.f(toObject(this), P, { get: aCallable(getter), enumerable: true, configurable: true });\n }\n });\n}\n", "'use strict';\nvar $ = require('../internals/export');\nvar DESCRIPTORS = require('../internals/descriptors');\nvar defineProperties = require('../internals/object-define-properties').f;\n\n// `Object.defineProperties` method\n// https://tc39.es/ecma262/#sec-object.defineproperties\n// eslint-disable-next-line es/no-object-defineproperties -- safe\n$({ target: 'Object', stat: true, forced: Object.defineProperties !== defineProperties, sham: !DESCRIPTORS }, {\n defineProperties: defineProperties\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar DESCRIPTORS = require('../internals/descriptors');\nvar defineProperty = require('../internals/object-define-property').f;\n\n// `Object.defineProperty` method\n// https://tc39.es/ecma262/#sec-object.defineproperty\n// eslint-disable-next-line es/no-object-defineproperty -- safe\n$({ target: 'Object', stat: true, forced: Object.defineProperty !== defineProperty, sham: !DESCRIPTORS }, {\n defineProperty: defineProperty\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar DESCRIPTORS = require('../internals/descriptors');\nvar FORCED = require('../internals/object-prototype-accessors-forced');\nvar aCallable = require('../internals/a-callable');\nvar toObject = require('../internals/to-object');\nvar definePropertyModule = require('../internals/object-define-property');\n\n// `Object.prototype.__defineSetter__` method\n// https://tc39.es/ecma262/#sec-object.prototype.__defineSetter__\nif (DESCRIPTORS) {\n $({ target: 'Object', proto: true, forced: FORCED }, {\n __defineSetter__: function __defineSetter__(P, setter) {\n definePropertyModule.f(toObject(this), P, { set: aCallable(setter), enumerable: true, configurable: true });\n }\n });\n}\n", "'use strict';\nvar DESCRIPTORS = require('../internals/descriptors');\nvar fails = require('../internals/fails');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar objectGetPrototypeOf = require('../internals/object-get-prototype-of');\nvar objectKeys = require('../internals/object-keys');\nvar toIndexedObject = require('../internals/to-indexed-object');\nvar $propertyIsEnumerable = require('../internals/object-property-is-enumerable').f;\n\nvar propertyIsEnumerable = uncurryThis($propertyIsEnumerable);\nvar push = uncurryThis([].push);\n\n// in some IE versions, `propertyIsEnumerable` returns incorrect result on integer keys\n// of `null` prototype objects\nvar IE_BUG = DESCRIPTORS && fails(function () {\n // eslint-disable-next-line es/no-object-create -- safe\n var O = Object.create(null);\n O[2] = 2;\n return !propertyIsEnumerable(O, 2);\n});\n\n// `Object.{ entries, values }` methods implementation\nvar createMethod = function (TO_ENTRIES) {\n return function (it) {\n var O = toIndexedObject(it);\n var keys = objectKeys(O);\n var IE_WORKAROUND = IE_BUG && objectGetPrototypeOf(O) === null;\n var length = keys.length;\n var i = 0;\n var result = [];\n var key;\n while (length > i) {\n key = keys[i++];\n if (!DESCRIPTORS || (IE_WORKAROUND ? key in O : propertyIsEnumerable(O, key))) {\n push(result, TO_ENTRIES ? [key, O[key]] : O[key]);\n }\n }\n return result;\n };\n};\n\nmodule.exports = {\n // `Object.entries` method\n // https://tc39.es/ecma262/#sec-object.entries\n entries: createMethod(true),\n // `Object.values` method\n // https://tc39.es/ecma262/#sec-object.values\n values: createMethod(false)\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar $entries = require('../internals/object-to-array').entries;\n\n// `Object.entries` method\n// https://tc39.es/ecma262/#sec-object.entries\n$({ target: 'Object', stat: true }, {\n entries: function entries(O) {\n return $entries(O);\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar FREEZING = require('../internals/freezing');\nvar fails = require('../internals/fails');\nvar isObject = require('../internals/is-object');\nvar onFreeze = require('../internals/internal-metadata').onFreeze;\n\n// eslint-disable-next-line es/no-object-freeze -- safe\nvar $freeze = Object.freeze;\nvar FAILS_ON_PRIMITIVES = fails(function () { $freeze(1); });\n\n// `Object.freeze` method\n// https://tc39.es/ecma262/#sec-object.freeze\n$({ target: 'Object', stat: true, forced: FAILS_ON_PRIMITIVES, sham: !FREEZING }, {\n freeze: function freeze(it) {\n return $freeze && isObject(it) ? $freeze(onFreeze(it)) : it;\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar iterate = require('../internals/iterate');\nvar createProperty = require('../internals/create-property');\n\n// `Object.fromEntries` method\n// https://tc39.es/ecma262/#sec-object.fromentries\n$({ target: 'Object', stat: true }, {\n fromEntries: function fromEntries(iterable) {\n var obj = {};\n iterate(iterable, function (k, v) {\n createProperty(obj, k, v);\n }, { AS_ENTRIES: true });\n return obj;\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar fails = require('../internals/fails');\nvar toIndexedObject = require('../internals/to-indexed-object');\nvar nativeGetOwnPropertyDescriptor = require('../internals/object-get-own-property-descriptor').f;\nvar DESCRIPTORS = require('../internals/descriptors');\n\nvar FORCED = !DESCRIPTORS || fails(function () { nativeGetOwnPropertyDescriptor(1); });\n\n// `Object.getOwnPropertyDescriptor` method\n// https://tc39.es/ecma262/#sec-object.getownpropertydescriptor\n$({ target: 'Object', stat: true, forced: FORCED, sham: !DESCRIPTORS }, {\n getOwnPropertyDescriptor: function getOwnPropertyDescriptor(it, key) {\n return nativeGetOwnPropertyDescriptor(toIndexedObject(it), key);\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar DESCRIPTORS = require('../internals/descriptors');\nvar ownKeys = require('../internals/own-keys');\nvar toIndexedObject = require('../internals/to-indexed-object');\nvar getOwnPropertyDescriptorModule = require('../internals/object-get-own-property-descriptor');\nvar createProperty = require('../internals/create-property');\n\n// `Object.getOwnPropertyDescriptors` method\n// https://tc39.es/ecma262/#sec-object.getownpropertydescriptors\n$({ target: 'Object', stat: true, sham: !DESCRIPTORS }, {\n getOwnPropertyDescriptors: function getOwnPropertyDescriptors(object) {\n var O = toIndexedObject(object);\n var getOwnPropertyDescriptor = getOwnPropertyDescriptorModule.f;\n var keys = ownKeys(O);\n var result = {};\n var index = 0;\n var key, descriptor;\n while (keys.length > index) {\n descriptor = getOwnPropertyDescriptor(O, key = keys[index++]);\n if (descriptor !== undefined) createProperty(result, key, descriptor);\n }\n return result;\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar fails = require('../internals/fails');\nvar getOwnPropertyNames = require('../internals/object-get-own-property-names-external').f;\n\n// eslint-disable-next-line es/no-object-getownpropertynames -- required for testing\nvar FAILS_ON_PRIMITIVES = fails(function () { return !Object.getOwnPropertyNames(1); });\n\n// `Object.getOwnPropertyNames` method\n// https://tc39.es/ecma262/#sec-object.getownpropertynames\n$({ target: 'Object', stat: true, forced: FAILS_ON_PRIMITIVES }, {\n getOwnPropertyNames: getOwnPropertyNames\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar fails = require('../internals/fails');\nvar toObject = require('../internals/to-object');\nvar nativeGetPrototypeOf = require('../internals/object-get-prototype-of');\nvar CORRECT_PROTOTYPE_GETTER = require('../internals/correct-prototype-getter');\n\nvar FAILS_ON_PRIMITIVES = fails(function () { nativeGetPrototypeOf(1); });\n\n// `Object.getPrototypeOf` method\n// https://tc39.es/ecma262/#sec-object.getprototypeof\n$({ target: 'Object', stat: true, forced: FAILS_ON_PRIMITIVES, sham: !CORRECT_PROTOTYPE_GETTER }, {\n getPrototypeOf: function getPrototypeOf(it) {\n return nativeGetPrototypeOf(toObject(it));\n }\n});\n\n", "'use strict';\nvar $ = require('../internals/export');\nvar createProperty = require('../internals/create-property');\nvar getBuiltIn = require('../internals/get-built-in');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar aCallable = require('../internals/a-callable');\nvar requireObjectCoercible = require('../internals/require-object-coercible');\nvar toPropertyKey = require('../internals/to-property-key');\nvar iterate = require('../internals/iterate');\nvar fails = require('../internals/fails');\n\n// eslint-disable-next-line es/no-object-groupby -- testing\nvar nativeGroupBy = Object.groupBy;\nvar create = getBuiltIn('Object', 'create');\nvar push = uncurryThis([].push);\n\n// https://bugs.webkit.org/show_bug.cgi?id=271524\nvar DOES_NOT_WORK_WITH_PRIMITIVES = !nativeGroupBy || fails(function () {\n return nativeGroupBy('ab', function (it) {\n return it;\n }).a.length !== 1;\n});\n\n// `Object.groupBy` method\n// https://tc39.es/ecma262/#sec-object.groupby\n$({ target: 'Object', stat: true, forced: DOES_NOT_WORK_WITH_PRIMITIVES }, {\n groupBy: function groupBy(items, callbackfn) {\n requireObjectCoercible(items);\n aCallable(callbackfn);\n var obj = create(null);\n var k = 0;\n iterate(items, function (value) {\n var key = toPropertyKey(callbackfn(value, k++));\n // in some IE versions, `hasOwnProperty` returns incorrect result on integer keys\n // but since it's a `null` prototype object, we can safely use `in`\n if (key in obj) push(obj[key], value);\n else createProperty(obj, key, [value]);\n });\n return obj;\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar hasOwn = require('../internals/has-own-property');\n\n// `Object.hasOwn` method\n// https://tc39.es/ecma262/#sec-object.hasown\n$({ target: 'Object', stat: true }, {\n hasOwn: hasOwn\n});\n", "'use strict';\n// `SameValue` abstract operation\n// https://tc39.es/ecma262/#sec-samevalue\n// eslint-disable-next-line es/no-object-is -- safe\nmodule.exports = Object.is || function is(x, y) {\n // eslint-disable-next-line no-self-compare -- NaN check\n return x === y ? x !== 0 || 1 / x === 1 / y : x !== x && y !== y;\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar is = require('../internals/same-value');\n\n// `Object.is` method\n// https://tc39.es/ecma262/#sec-object.is\n$({ target: 'Object', stat: true }, {\n is: is\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar $isExtensible = require('../internals/object-is-extensible');\n\n// `Object.isExtensible` method\n// https://tc39.es/ecma262/#sec-object.isextensible\n// eslint-disable-next-line es/no-object-isextensible -- safe\n$({ target: 'Object', stat: true, forced: Object.isExtensible !== $isExtensible }, {\n isExtensible: $isExtensible\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar fails = require('../internals/fails');\nvar isObject = require('../internals/is-object');\nvar classof = require('../internals/classof-raw');\nvar ARRAY_BUFFER_NON_EXTENSIBLE = require('../internals/array-buffer-non-extensible');\n\n// eslint-disable-next-line es/no-object-isfrozen -- safe\nvar $isFrozen = Object.isFrozen;\n\nvar FORCED = ARRAY_BUFFER_NON_EXTENSIBLE || fails(function () { $isFrozen(1); });\n\n// `Object.isFrozen` method\n// https://tc39.es/ecma262/#sec-object.isfrozen\n$({ target: 'Object', stat: true, forced: FORCED }, {\n isFrozen: function isFrozen(it) {\n if (!isObject(it)) return true;\n if (ARRAY_BUFFER_NON_EXTENSIBLE && classof(it) === 'ArrayBuffer') return true;\n return $isFrozen ? $isFrozen(it) : false;\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar fails = require('../internals/fails');\nvar isObject = require('../internals/is-object');\nvar classof = require('../internals/classof-raw');\nvar ARRAY_BUFFER_NON_EXTENSIBLE = require('../internals/array-buffer-non-extensible');\n\n// eslint-disable-next-line es/no-object-issealed -- safe\nvar $isSealed = Object.isSealed;\n\nvar FORCED = ARRAY_BUFFER_NON_EXTENSIBLE || fails(function () { $isSealed(1); });\n\n// `Object.isSealed` method\n// https://tc39.es/ecma262/#sec-object.issealed\n$({ target: 'Object', stat: true, forced: FORCED }, {\n isSealed: function isSealed(it) {\n if (!isObject(it)) return true;\n if (ARRAY_BUFFER_NON_EXTENSIBLE && classof(it) === 'ArrayBuffer') return true;\n return $isSealed ? $isSealed(it) : false;\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar toObject = require('../internals/to-object');\nvar nativeKeys = require('../internals/object-keys');\nvar fails = require('../internals/fails');\n\nvar FAILS_ON_PRIMITIVES = fails(function () { nativeKeys(1); });\n\n// `Object.keys` method\n// https://tc39.es/ecma262/#sec-object.keys\n$({ target: 'Object', stat: true, forced: FAILS_ON_PRIMITIVES }, {\n keys: function keys(it) {\n return nativeKeys(toObject(it));\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar DESCRIPTORS = require('../internals/descriptors');\nvar FORCED = require('../internals/object-prototype-accessors-forced');\nvar toObject = require('../internals/to-object');\nvar toPropertyKey = require('../internals/to-property-key');\nvar getPrototypeOf = require('../internals/object-get-prototype-of');\nvar getOwnPropertyDescriptor = require('../internals/object-get-own-property-descriptor').f;\n\n// `Object.prototype.__lookupGetter__` method\n// https://tc39.es/ecma262/#sec-object.prototype.__lookupGetter__\nif (DESCRIPTORS) {\n $({ target: 'Object', proto: true, forced: FORCED }, {\n __lookupGetter__: function __lookupGetter__(P) {\n var O = toObject(this);\n var key = toPropertyKey(P);\n var desc;\n do {\n if (desc = getOwnPropertyDescriptor(O, key)) return desc.get;\n } while (O = getPrototypeOf(O));\n }\n });\n}\n", "'use strict';\nvar $ = require('../internals/export');\nvar DESCRIPTORS = require('../internals/descriptors');\nvar FORCED = require('../internals/object-prototype-accessors-forced');\nvar toObject = require('../internals/to-object');\nvar toPropertyKey = require('../internals/to-property-key');\nvar getPrototypeOf = require('../internals/object-get-prototype-of');\nvar getOwnPropertyDescriptor = require('../internals/object-get-own-property-descriptor').f;\n\n// `Object.prototype.__lookupSetter__` method\n// https://tc39.es/ecma262/#sec-object.prototype.__lookupSetter__\nif (DESCRIPTORS) {\n $({ target: 'Object', proto: true, forced: FORCED }, {\n __lookupSetter__: function __lookupSetter__(P) {\n var O = toObject(this);\n var key = toPropertyKey(P);\n var desc;\n do {\n if (desc = getOwnPropertyDescriptor(O, key)) return desc.set;\n } while (O = getPrototypeOf(O));\n }\n });\n}\n", "'use strict';\nvar $ = require('../internals/export');\nvar isObject = require('../internals/is-object');\nvar onFreeze = require('../internals/internal-metadata').onFreeze;\nvar FREEZING = require('../internals/freezing');\nvar fails = require('../internals/fails');\n\n// eslint-disable-next-line es/no-object-preventextensions -- safe\nvar $preventExtensions = Object.preventExtensions;\nvar FAILS_ON_PRIMITIVES = fails(function () { $preventExtensions(1); });\n\n// `Object.preventExtensions` method\n// https://tc39.es/ecma262/#sec-object.preventextensions\n$({ target: 'Object', stat: true, forced: FAILS_ON_PRIMITIVES, sham: !FREEZING }, {\n preventExtensions: function preventExtensions(it) {\n return $preventExtensions && isObject(it) ? $preventExtensions(onFreeze(it)) : it;\n }\n});\n", "'use strict';\nvar DESCRIPTORS = require('../internals/descriptors');\nvar defineBuiltInAccessor = require('../internals/define-built-in-accessor');\nvar isObject = require('../internals/is-object');\nvar isPossiblePrototype = require('../internals/is-possible-prototype');\nvar toObject = require('../internals/to-object');\nvar requireObjectCoercible = require('../internals/require-object-coercible');\n\n// eslint-disable-next-line es/no-object-getprototypeof -- safe\nvar getPrototypeOf = Object.getPrototypeOf;\n// eslint-disable-next-line es/no-object-setprototypeof -- safe\nvar setPrototypeOf = Object.setPrototypeOf;\nvar ObjectPrototype = Object.prototype;\nvar PROTO = '__proto__';\n\n// `Object.prototype.__proto__` accessor\n// https://tc39.es/ecma262/#sec-object.prototype.__proto__\nif (DESCRIPTORS && getPrototypeOf && setPrototypeOf && !(PROTO in ObjectPrototype)) try {\n defineBuiltInAccessor(ObjectPrototype, PROTO, {\n configurable: true,\n get: function __proto__() {\n return getPrototypeOf(toObject(this));\n },\n set: function __proto__(proto) {\n var O = requireObjectCoercible(this);\n if (isPossiblePrototype(proto) && isObject(O)) {\n setPrototypeOf(O, proto);\n }\n }\n });\n} catch (error) { /* empty */ }\n", "'use strict';\nvar $ = require('../internals/export');\nvar isObject = require('../internals/is-object');\nvar onFreeze = require('../internals/internal-metadata').onFreeze;\nvar FREEZING = require('../internals/freezing');\nvar fails = require('../internals/fails');\n\n// eslint-disable-next-line es/no-object-seal -- safe\nvar $seal = Object.seal;\nvar FAILS_ON_PRIMITIVES = fails(function () { $seal(1); });\n\n// `Object.seal` method\n// https://tc39.es/ecma262/#sec-object.seal\n$({ target: 'Object', stat: true, forced: FAILS_ON_PRIMITIVES, sham: !FREEZING }, {\n seal: function seal(it) {\n return $seal && isObject(it) ? $seal(onFreeze(it)) : it;\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar setPrototypeOf = require('../internals/object-set-prototype-of');\n\n// `Object.setPrototypeOf` method\n// https://tc39.es/ecma262/#sec-object.setprototypeof\n$({ target: 'Object', stat: true }, {\n setPrototypeOf: setPrototypeOf\n});\n", "'use strict';\nvar TO_STRING_TAG_SUPPORT = require('../internals/to-string-tag-support');\nvar classof = require('../internals/classof');\n\n// `Object.prototype.toString` method implementation\n// https://tc39.es/ecma262/#sec-object.prototype.tostring\nmodule.exports = TO_STRING_TAG_SUPPORT ? {}.toString : function toString() {\n return '[object ' + classof(this) + ']';\n};\n", "'use strict';\nvar TO_STRING_TAG_SUPPORT = require('../internals/to-string-tag-support');\nvar defineBuiltIn = require('../internals/define-built-in');\nvar toString = require('../internals/object-to-string');\n\n// `Object.prototype.toString` method\n// https://tc39.es/ecma262/#sec-object.prototype.tostring\nif (!TO_STRING_TAG_SUPPORT) {\n defineBuiltIn(Object.prototype, 'toString', toString, { unsafe: true });\n}\n", "'use strict';\nvar $ = require('../internals/export');\nvar $values = require('../internals/object-to-array').values;\n\n// `Object.values` method\n// https://tc39.es/ecma262/#sec-object.values\n$({ target: 'Object', stat: true }, {\n values: function values(O) {\n return $values(O);\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar $parseFloat = require('../internals/number-parse-float');\n\n// `parseFloat` method\n// https://tc39.es/ecma262/#sec-parsefloat-string\n$({ global: true, forced: parseFloat !== $parseFloat }, {\n parseFloat: $parseFloat\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar $parseInt = require('../internals/number-parse-int');\n\n// `parseInt` method\n// https://tc39.es/ecma262/#sec-parseint-string-radix\n$({ global: true, forced: parseInt !== $parseInt }, {\n parseInt: $parseInt\n});\n", "'use strict';\nvar isConstructor = require('../internals/is-constructor');\nvar tryToString = require('../internals/try-to-string');\n\nvar $TypeError = TypeError;\n\n// `Assert: IsConstructor(argument) is true`\nmodule.exports = function (argument) {\n if (isConstructor(argument)) return argument;\n throw new $TypeError(tryToString(argument) + ' is not a constructor');\n};\n", "'use strict';\nvar anObject = require('../internals/an-object');\nvar aConstructor = require('../internals/a-constructor');\nvar isNullOrUndefined = require('../internals/is-null-or-undefined');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\n\nvar SPECIES = wellKnownSymbol('species');\n\n// `SpeciesConstructor` abstract operation\n// https://tc39.es/ecma262/#sec-speciesconstructor\nmodule.exports = function (O, defaultConstructor) {\n var C = anObject(O).constructor;\n var S;\n return C === undefined || isNullOrUndefined(S = anObject(C)[SPECIES]) ? defaultConstructor : aConstructor(S);\n};\n", "'use strict';\nvar $TypeError = TypeError;\n\nmodule.exports = function (passed, required) {\n if (passed < required) throw new $TypeError('Not enough arguments');\n return passed;\n};\n", "'use strict';\nvar userAgent = require('../internals/environment-user-agent');\n\nmodule.exports = /ipad|iphone|ipod/i.test(userAgent) && /applewebkit/i.test(userAgent);\n", "'use strict';\nvar globalThis = require('../internals/global-this');\nvar apply = require('../internals/function-apply');\nvar bind = require('../internals/function-bind-context');\nvar isCallable = require('../internals/is-callable');\nvar hasOwn = require('../internals/has-own-property');\nvar fails = require('../internals/fails');\nvar html = require('../internals/html');\nvar arraySlice = require('../internals/array-slice');\nvar createElement = require('../internals/document-create-element');\nvar validateArgumentsLength = require('../internals/validate-arguments-length');\nvar IS_IOS = require('../internals/environment-is-ios');\nvar IS_NODE = require('../internals/environment-is-node');\n\nvar set = globalThis.setImmediate;\nvar clear = globalThis.clearImmediate;\nvar process = globalThis.process;\nvar Dispatch = globalThis.Dispatch;\nvar Function = globalThis.Function;\nvar MessageChannel = globalThis.MessageChannel;\nvar String = globalThis.String;\nvar counter = 0;\nvar queue = {};\nvar ONREADYSTATECHANGE = 'onreadystatechange';\nvar $location, defer, channel, port;\n\nfails(function () {\n // Deno throws a ReferenceError on `location` access without `--location` flag\n $location = globalThis.location;\n});\n\nvar run = function (id) {\n if (hasOwn(queue, id)) {\n var fn = queue[id];\n delete queue[id];\n fn();\n }\n};\n\nvar runner = function (id) {\n return function () {\n run(id);\n };\n};\n\nvar eventListener = function (event) {\n run(event.data);\n};\n\nvar globalPostMessageDefer = function (id) {\n // old engines have not location.origin\n globalThis.postMessage(String(id), $location.protocol + '//' + $location.host);\n};\n\n// Node.js 0.9+ & IE10+ has setImmediate, otherwise:\nif (!set || !clear) {\n set = function setImmediate(handler) {\n validateArgumentsLength(arguments.length, 1);\n var fn = isCallable(handler) ? handler : Function(handler);\n var args = arraySlice(arguments, 1);\n queue[++counter] = function () {\n apply(fn, undefined, args);\n };\n defer(counter);\n return counter;\n };\n clear = function clearImmediate(id) {\n delete queue[id];\n };\n // Node.js 0.8-\n if (IS_NODE) {\n defer = function (id) {\n process.nextTick(runner(id));\n };\n // Sphere (JS game engine) Dispatch API\n } else if (Dispatch && Dispatch.now) {\n defer = function (id) {\n Dispatch.now(runner(id));\n };\n // Browsers with MessageChannel, includes WebWorkers\n // except iOS - https://github.com/zloirock/core-js/issues/624\n } else if (MessageChannel && !IS_IOS) {\n channel = new MessageChannel();\n port = channel.port2;\n channel.port1.onmessage = eventListener;\n defer = bind(port.postMessage, port);\n // Browsers with postMessage, skip WebWorkers\n // IE8 has postMessage, but it's sync & typeof its postMessage is 'object'\n } else if (\n globalThis.addEventListener &&\n isCallable(globalThis.postMessage) &&\n !globalThis.importScripts &&\n $location && $location.protocol !== 'file:' &&\n !fails(globalPostMessageDefer)\n ) {\n defer = globalPostMessageDefer;\n globalThis.addEventListener('message', eventListener, false);\n // IE8-\n } else if (ONREADYSTATECHANGE in createElement('script')) {\n defer = function (id) {\n html.appendChild(createElement('script'))[ONREADYSTATECHANGE] = function () {\n html.removeChild(this);\n run(id);\n };\n };\n // Rest old browsers\n } else {\n defer = function (id) {\n setTimeout(runner(id), 0);\n };\n }\n}\n\nmodule.exports = {\n set: set,\n clear: clear\n};\n", "'use strict';\nvar globalThis = require('../internals/global-this');\nvar DESCRIPTORS = require('../internals/descriptors');\n\n// eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe\nvar getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;\n\n// Avoid NodeJS experimental warning\nmodule.exports = function (name) {\n if (!DESCRIPTORS) return globalThis[name];\n var descriptor = getOwnPropertyDescriptor(globalThis, name);\n return descriptor && descriptor.value;\n};\n", "'use strict';\nvar Queue = function () {\n this.head = null;\n this.tail = null;\n};\n\nQueue.prototype = {\n add: function (item) {\n var entry = { item: item, next: null };\n var tail = this.tail;\n if (tail) tail.next = entry;\n else this.head = entry;\n this.tail = entry;\n },\n get: function () {\n var entry = this.head;\n if (entry) {\n var next = this.head = entry.next;\n if (next === null) this.tail = null;\n return entry.item;\n }\n }\n};\n\nmodule.exports = Queue;\n", "'use strict';\nvar userAgent = require('../internals/environment-user-agent');\n\nmodule.exports = /ipad|iphone|ipod/i.test(userAgent) && typeof Pebble != 'undefined';\n", "'use strict';\nvar userAgent = require('../internals/environment-user-agent');\n\nmodule.exports = /web0s(?!.*chrome)/i.test(userAgent);\n", "'use strict';\nvar globalThis = require('../internals/global-this');\nvar safeGetBuiltIn = require('../internals/safe-get-built-in');\nvar bind = require('../internals/function-bind-context');\nvar macrotask = require('../internals/task').set;\nvar Queue = require('../internals/queue');\nvar IS_IOS = require('../internals/environment-is-ios');\nvar IS_IOS_PEBBLE = require('../internals/environment-is-ios-pebble');\nvar IS_WEBOS_WEBKIT = require('../internals/environment-is-webos-webkit');\nvar IS_NODE = require('../internals/environment-is-node');\n\nvar MutationObserver = globalThis.MutationObserver || globalThis.WebKitMutationObserver;\nvar document = globalThis.document;\nvar process = globalThis.process;\nvar Promise = globalThis.Promise;\nvar microtask = safeGetBuiltIn('queueMicrotask');\nvar notify, toggle, node, promise, then;\n\n// modern engines have queueMicrotask method\nif (!microtask) {\n var queue = new Queue();\n\n var flush = function () {\n var parent, fn;\n if (IS_NODE && (parent = process.domain)) parent.exit();\n while (fn = queue.get()) try {\n fn();\n } catch (error) {\n if (queue.head) notify();\n throw error;\n }\n if (parent) parent.enter();\n };\n\n // browsers with MutationObserver, except iOS - https://github.com/zloirock/core-js/issues/339\n // also except WebOS Webkit https://github.com/zloirock/core-js/issues/898\n if (!IS_IOS && !IS_NODE && !IS_WEBOS_WEBKIT && MutationObserver && document) {\n toggle = true;\n node = document.createTextNode('');\n new MutationObserver(flush).observe(node, { characterData: true });\n notify = function () {\n node.data = toggle = !toggle;\n };\n // environments with maybe non-completely correct, but existent Promise\n } else if (!IS_IOS_PEBBLE && Promise && Promise.resolve) {\n // Promise.resolve without an argument throws an error in LG WebOS 2\n promise = Promise.resolve(undefined);\n // workaround of WebKit ~ iOS Safari 10.1 bug\n promise.constructor = Promise;\n then = bind(promise.then, promise);\n notify = function () {\n then(flush);\n };\n // Node.js without promises\n } else if (IS_NODE) {\n notify = function () {\n process.nextTick(flush);\n };\n // for other environments - macrotask based on:\n // - setImmediate\n // - MessageChannel\n // - window.postMessage\n // - onreadystatechange\n // - setTimeout\n } else {\n // `webpack` dev server bug on IE global methods - use bind(fn, global)\n macrotask = bind(macrotask, globalThis);\n notify = function () {\n macrotask(flush);\n };\n }\n\n microtask = function (fn) {\n if (!queue.head) notify();\n queue.add(fn);\n };\n}\n\nmodule.exports = microtask;\n", "'use strict';\nmodule.exports = function (a, b) {\n try {\n // eslint-disable-next-line no-console -- safe\n arguments.length === 1 ? console.error(a) : console.error(a, b);\n } catch (error) { /* empty */ }\n};\n", "'use strict';\nmodule.exports = function (exec) {\n try {\n return { error: false, value: exec() };\n } catch (error) {\n return { error: true, value: error };\n }\n};\n", "'use strict';\nvar globalThis = require('../internals/global-this');\n\nmodule.exports = globalThis.Promise;\n", "'use strict';\nvar globalThis = require('../internals/global-this');\nvar NativePromiseConstructor = require('../internals/promise-native-constructor');\nvar isCallable = require('../internals/is-callable');\nvar isForced = require('../internals/is-forced');\nvar inspectSource = require('../internals/inspect-source');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\nvar ENVIRONMENT = require('../internals/environment');\nvar IS_PURE = require('../internals/is-pure');\nvar V8_VERSION = require('../internals/environment-v8-version');\n\nvar NativePromisePrototype = NativePromiseConstructor && NativePromiseConstructor.prototype;\nvar SPECIES = wellKnownSymbol('species');\nvar SUBCLASSING = false;\nvar NATIVE_PROMISE_REJECTION_EVENT = isCallable(globalThis.PromiseRejectionEvent);\n\nvar FORCED_PROMISE_CONSTRUCTOR = isForced('Promise', function () {\n var PROMISE_CONSTRUCTOR_SOURCE = inspectSource(NativePromiseConstructor);\n var GLOBAL_CORE_JS_PROMISE = PROMISE_CONSTRUCTOR_SOURCE !== String(NativePromiseConstructor);\n // V8 6.6 (Node 10 and Chrome 66) have a bug with resolving custom thenables\n // https://bugs.chromium.org/p/chromium/issues/detail?id=830565\n // We can't detect it synchronously, so just check versions\n if (!GLOBAL_CORE_JS_PROMISE && V8_VERSION === 66) return true;\n // We need Promise#{ catch, finally } in the pure version for preventing prototype pollution\n if (IS_PURE && !(NativePromisePrototype['catch'] && NativePromisePrototype['finally'])) return true;\n // We can't use @@species feature detection in V8 since it causes\n // deoptimization and performance degradation\n // https://github.com/zloirock/core-js/issues/679\n if (!V8_VERSION || V8_VERSION < 51 || !/native code/.test(PROMISE_CONSTRUCTOR_SOURCE)) {\n // Detect correctness of subclassing with @@species support\n var promise = new NativePromiseConstructor(function (resolve) { resolve(1); });\n var FakePromise = function (exec) {\n exec(function () { /* empty */ }, function () { /* empty */ });\n };\n var constructor = promise.constructor = {};\n constructor[SPECIES] = FakePromise;\n SUBCLASSING = promise.then(function () { /* empty */ }) instanceof FakePromise;\n if (!SUBCLASSING) return true;\n // Unhandled rejections tracking support, NodeJS Promise without it fails @@species test\n } return !GLOBAL_CORE_JS_PROMISE && (ENVIRONMENT === 'BROWSER' || ENVIRONMENT === 'DENO') && !NATIVE_PROMISE_REJECTION_EVENT;\n});\n\nmodule.exports = {\n CONSTRUCTOR: FORCED_PROMISE_CONSTRUCTOR,\n REJECTION_EVENT: NATIVE_PROMISE_REJECTION_EVENT,\n SUBCLASSING: SUBCLASSING\n};\n", "'use strict';\nvar aCallable = require('../internals/a-callable');\n\nvar $TypeError = TypeError;\n\nvar PromiseCapability = function (C) {\n var resolve, reject;\n this.promise = new C(function ($$resolve, $$reject) {\n if (resolve !== undefined || reject !== undefined) throw new $TypeError('Bad Promise constructor');\n resolve = $$resolve;\n reject = $$reject;\n });\n this.resolve = aCallable(resolve);\n this.reject = aCallable(reject);\n};\n\n// `NewPromiseCapability` abstract operation\n// https://tc39.es/ecma262/#sec-newpromisecapability\nmodule.exports.f = function (C) {\n return new PromiseCapability(C);\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar IS_PURE = require('../internals/is-pure');\nvar IS_NODE = require('../internals/environment-is-node');\nvar globalThis = require('../internals/global-this');\nvar path = require('../internals/path');\nvar call = require('../internals/function-call');\nvar defineBuiltIn = require('../internals/define-built-in');\nvar setPrototypeOf = require('../internals/object-set-prototype-of');\nvar setToStringTag = require('../internals/set-to-string-tag');\nvar setSpecies = require('../internals/set-species');\nvar aCallable = require('../internals/a-callable');\nvar isCallable = require('../internals/is-callable');\nvar isObject = require('../internals/is-object');\nvar anInstance = require('../internals/an-instance');\nvar speciesConstructor = require('../internals/species-constructor');\nvar task = require('../internals/task').set;\nvar microtask = require('../internals/microtask');\nvar hostReportErrors = require('../internals/host-report-errors');\nvar perform = require('../internals/perform');\nvar Queue = require('../internals/queue');\nvar InternalStateModule = require('../internals/internal-state');\nvar NativePromiseConstructor = require('../internals/promise-native-constructor');\nvar PromiseConstructorDetection = require('../internals/promise-constructor-detection');\nvar newPromiseCapabilityModule = require('../internals/new-promise-capability');\n\nvar PROMISE = 'Promise';\nvar FORCED_PROMISE_CONSTRUCTOR = PromiseConstructorDetection.CONSTRUCTOR;\nvar NATIVE_PROMISE_REJECTION_EVENT = PromiseConstructorDetection.REJECTION_EVENT;\nvar NATIVE_PROMISE_SUBCLASSING = PromiseConstructorDetection.SUBCLASSING;\nvar getInternalPromiseState = InternalStateModule.getterFor(PROMISE);\nvar setInternalState = InternalStateModule.set;\nvar NativePromisePrototype = NativePromiseConstructor && NativePromiseConstructor.prototype;\nvar PromiseConstructor = NativePromiseConstructor;\nvar PromisePrototype = NativePromisePrototype;\nvar TypeError = globalThis.TypeError;\nvar document = globalThis.document;\nvar process = globalThis.process;\nvar newPromiseCapability = newPromiseCapabilityModule.f;\nvar newGenericPromiseCapability = newPromiseCapability;\n\nvar DISPATCH_EVENT = !!(document && document.createEvent && globalThis.dispatchEvent);\nvar UNHANDLED_REJECTION = 'unhandledrejection';\nvar REJECTION_HANDLED = 'rejectionhandled';\nvar PENDING = 0;\nvar FULFILLED = 1;\nvar REJECTED = 2;\nvar HANDLED = 1;\nvar UNHANDLED = 2;\n\nvar Internal, OwnPromiseCapability, PromiseWrapper, nativeThen;\n\n// helpers\nvar isThenable = function (it) {\n var then;\n return isObject(it) && isCallable(then = it.then) ? then : false;\n};\n\nvar callReaction = function (reaction, state) {\n var value = state.value;\n var ok = state.state === FULFILLED;\n var handler = ok ? reaction.ok : reaction.fail;\n var resolve = reaction.resolve;\n var reject = reaction.reject;\n var domain = reaction.domain;\n var result, then, exited;\n try {\n if (handler) {\n if (!ok) {\n if (state.rejection === UNHANDLED) onHandleUnhandled(state);\n state.rejection = HANDLED;\n }\n if (handler === true) result = value;\n else {\n if (domain) domain.enter();\n result = handler(value); // can throw\n if (domain) {\n domain.exit();\n exited = true;\n }\n }\n if (result === reaction.promise) {\n reject(new TypeError('Promise-chain cycle'));\n } else if (then = isThenable(result)) {\n call(then, result, resolve, reject);\n } else resolve(result);\n } else reject(value);\n } catch (error) {\n if (domain && !exited) domain.exit();\n reject(error);\n }\n};\n\nvar notify = function (state, isReject) {\n if (state.notified) return;\n state.notified = true;\n microtask(function () {\n var reactions = state.reactions;\n var reaction;\n while (reaction = reactions.get()) {\n callReaction(reaction, state);\n }\n state.notified = false;\n if (isReject && !state.rejection) onUnhandled(state);\n });\n};\n\nvar dispatchEvent = function (name, promise, reason) {\n var event, handler;\n if (DISPATCH_EVENT) {\n event = document.createEvent('Event');\n event.promise = promise;\n event.reason = reason;\n event.initEvent(name, false, true);\n globalThis.dispatchEvent(event);\n } else event = { promise: promise, reason: reason };\n if (!NATIVE_PROMISE_REJECTION_EVENT && (handler = globalThis['on' + name])) handler(event);\n else if (name === UNHANDLED_REJECTION) hostReportErrors('Unhandled promise rejection', reason);\n};\n\nvar onUnhandled = function (state) {\n call(task, globalThis, function () {\n var promise = state.facade;\n var value = state.value;\n var IS_UNHANDLED = isUnhandled(state);\n var result;\n if (IS_UNHANDLED) {\n result = perform(function () {\n if (IS_NODE) {\n process.emit('unhandledRejection', value, promise);\n } else dispatchEvent(UNHANDLED_REJECTION, promise, value);\n });\n // Browsers should not trigger `rejectionHandled` event if it was handled here, NodeJS - should\n state.rejection = IS_NODE || isUnhandled(state) ? UNHANDLED : HANDLED;\n if (result.error) throw result.value;\n }\n });\n};\n\nvar isUnhandled = function (state) {\n return state.rejection !== HANDLED && !state.parent;\n};\n\nvar onHandleUnhandled = function (state) {\n call(task, globalThis, function () {\n var promise = state.facade;\n if (IS_NODE) {\n process.emit('rejectionHandled', promise);\n } else dispatchEvent(REJECTION_HANDLED, promise, state.value);\n });\n};\n\nvar bind = function (fn, state, unwrap) {\n return function (value) {\n fn(state, value, unwrap);\n };\n};\n\nvar internalReject = function (state, value, unwrap) {\n if (state.done) return;\n state.done = true;\n if (unwrap) state = unwrap;\n state.value = value;\n state.state = REJECTED;\n notify(state, true);\n};\n\nvar internalResolve = function (state, value, unwrap) {\n if (state.done) return;\n state.done = true;\n if (unwrap) state = unwrap;\n try {\n if (state.facade === value) throw new TypeError(\"Promise can't be resolved itself\");\n var then = isThenable(value);\n if (then) {\n microtask(function () {\n var wrapper = { done: false };\n try {\n call(then, value,\n bind(internalResolve, wrapper, state),\n bind(internalReject, wrapper, state)\n );\n } catch (error) {\n internalReject(wrapper, error, state);\n }\n });\n } else {\n state.value = value;\n state.state = FULFILLED;\n notify(state, false);\n }\n } catch (error) {\n internalReject({ done: false }, error, state);\n }\n};\n\n// constructor polyfill\nif (FORCED_PROMISE_CONSTRUCTOR) {\n // 25.4.3.1 Promise(executor)\n PromiseConstructor = function Promise(executor) {\n anInstance(this, PromisePrototype);\n aCallable(executor);\n call(Internal, this);\n var state = getInternalPromiseState(this);\n try {\n executor(bind(internalResolve, state), bind(internalReject, state));\n } catch (error) {\n internalReject(state, error);\n }\n };\n\n PromisePrototype = PromiseConstructor.prototype;\n\n // eslint-disable-next-line no-unused-vars -- required for `.length`\n Internal = function Promise(executor) {\n setInternalState(this, {\n type: PROMISE,\n done: false,\n notified: false,\n parent: false,\n reactions: new Queue(),\n rejection: false,\n state: PENDING,\n value: null\n });\n };\n\n // `Promise.prototype.then` method\n // https://tc39.es/ecma262/#sec-promise.prototype.then\n Internal.prototype = defineBuiltIn(PromisePrototype, 'then', function then(onFulfilled, onRejected) {\n var state = getInternalPromiseState(this);\n var reaction = newPromiseCapability(speciesConstructor(this, PromiseConstructor));\n state.parent = true;\n reaction.ok = isCallable(onFulfilled) ? onFulfilled : true;\n reaction.fail = isCallable(onRejected) && onRejected;\n reaction.domain = IS_NODE ? process.domain : undefined;\n if (state.state === PENDING) state.reactions.add(reaction);\n else microtask(function () {\n callReaction(reaction, state);\n });\n return reaction.promise;\n });\n\n OwnPromiseCapability = function () {\n var promise = new Internal();\n var state = getInternalPromiseState(promise);\n this.promise = promise;\n this.resolve = bind(internalResolve, state);\n this.reject = bind(internalReject, state);\n };\n\n newPromiseCapabilityModule.f = newPromiseCapability = function (C) {\n return C === PromiseConstructor || C === PromiseWrapper\n ? new OwnPromiseCapability(C)\n : newGenericPromiseCapability(C);\n };\n\n if (!IS_PURE && isCallable(NativePromiseConstructor) && NativePromisePrototype !== Object.prototype) {\n nativeThen = NativePromisePrototype.then;\n\n if (!NATIVE_PROMISE_SUBCLASSING) {\n // make `Promise#then` return a polyfilled `Promise` for native promise-based APIs\n defineBuiltIn(NativePromisePrototype, 'then', function then(onFulfilled, onRejected) {\n var that = this;\n return new PromiseConstructor(function (resolve, reject) {\n call(nativeThen, that, resolve, reject);\n }).then(onFulfilled, onRejected);\n // https://github.com/zloirock/core-js/issues/640\n }, { unsafe: true });\n }\n\n // make `.constructor === Promise` work for native promise-based APIs\n try {\n delete NativePromisePrototype.constructor;\n } catch (error) { /* empty */ }\n\n // make `instanceof Promise` work for native promise-based APIs\n if (setPrototypeOf) {\n setPrototypeOf(NativePromisePrototype, PromisePrototype);\n }\n }\n}\n\n// `Promise` constructor\n// https://tc39.es/ecma262/#sec-promise-executor\n$({ global: true, constructor: true, wrap: true, forced: FORCED_PROMISE_CONSTRUCTOR }, {\n Promise: PromiseConstructor\n});\n\nPromiseWrapper = path.Promise;\n\nsetToStringTag(PromiseConstructor, PROMISE, false, true);\nsetSpecies(PROMISE);\n", "'use strict';\nvar NativePromiseConstructor = require('../internals/promise-native-constructor');\nvar checkCorrectnessOfIteration = require('../internals/check-correctness-of-iteration');\nvar FORCED_PROMISE_CONSTRUCTOR = require('../internals/promise-constructor-detection').CONSTRUCTOR;\n\nmodule.exports = FORCED_PROMISE_CONSTRUCTOR || !checkCorrectnessOfIteration(function (iterable) {\n NativePromiseConstructor.all(iterable).then(undefined, function () { /* empty */ });\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar call = require('../internals/function-call');\nvar aCallable = require('../internals/a-callable');\nvar newPromiseCapabilityModule = require('../internals/new-promise-capability');\nvar perform = require('../internals/perform');\nvar iterate = require('../internals/iterate');\nvar PROMISE_STATICS_INCORRECT_ITERATION = require('../internals/promise-statics-incorrect-iteration');\n\n// `Promise.all` method\n// https://tc39.es/ecma262/#sec-promise.all\n$({ target: 'Promise', stat: true, forced: PROMISE_STATICS_INCORRECT_ITERATION }, {\n all: function all(iterable) {\n var C = this;\n var capability = newPromiseCapabilityModule.f(C);\n var resolve = capability.resolve;\n var reject = capability.reject;\n var result = perform(function () {\n var $promiseResolve = aCallable(C.resolve);\n var values = [];\n var counter = 0;\n var remaining = 1;\n iterate(iterable, function (promise) {\n var index = counter++;\n var alreadyCalled = false;\n remaining++;\n call($promiseResolve, C, promise).then(function (value) {\n if (alreadyCalled) return;\n alreadyCalled = true;\n values[index] = value;\n --remaining || resolve(values);\n }, reject);\n });\n --remaining || resolve(values);\n });\n if (result.error) reject(result.value);\n return capability.promise;\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar IS_PURE = require('../internals/is-pure');\nvar FORCED_PROMISE_CONSTRUCTOR = require('../internals/promise-constructor-detection').CONSTRUCTOR;\nvar NativePromiseConstructor = require('../internals/promise-native-constructor');\nvar getBuiltIn = require('../internals/get-built-in');\nvar isCallable = require('../internals/is-callable');\nvar defineBuiltIn = require('../internals/define-built-in');\n\nvar NativePromisePrototype = NativePromiseConstructor && NativePromiseConstructor.prototype;\n\n// `Promise.prototype.catch` method\n// https://tc39.es/ecma262/#sec-promise.prototype.catch\n$({ target: 'Promise', proto: true, forced: FORCED_PROMISE_CONSTRUCTOR, real: true }, {\n 'catch': function (onRejected) {\n return this.then(undefined, onRejected);\n }\n});\n\n// makes sure that native promise-based APIs `Promise#catch` properly works with patched `Promise#then`\nif (!IS_PURE && isCallable(NativePromiseConstructor)) {\n var method = getBuiltIn('Promise').prototype['catch'];\n if (NativePromisePrototype['catch'] !== method) {\n defineBuiltIn(NativePromisePrototype, 'catch', method, { unsafe: true });\n }\n}\n", "'use strict';\nvar $ = require('../internals/export');\nvar call = require('../internals/function-call');\nvar aCallable = require('../internals/a-callable');\nvar newPromiseCapabilityModule = require('../internals/new-promise-capability');\nvar perform = require('../internals/perform');\nvar iterate = require('../internals/iterate');\nvar PROMISE_STATICS_INCORRECT_ITERATION = require('../internals/promise-statics-incorrect-iteration');\n\n// `Promise.race` method\n// https://tc39.es/ecma262/#sec-promise.race\n$({ target: 'Promise', stat: true, forced: PROMISE_STATICS_INCORRECT_ITERATION }, {\n race: function race(iterable) {\n var C = this;\n var capability = newPromiseCapabilityModule.f(C);\n var reject = capability.reject;\n var result = perform(function () {\n var $promiseResolve = aCallable(C.resolve);\n iterate(iterable, function (promise) {\n call($promiseResolve, C, promise).then(capability.resolve, reject);\n });\n });\n if (result.error) reject(result.value);\n return capability.promise;\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar newPromiseCapabilityModule = require('../internals/new-promise-capability');\nvar FORCED_PROMISE_CONSTRUCTOR = require('../internals/promise-constructor-detection').CONSTRUCTOR;\n\n// `Promise.reject` method\n// https://tc39.es/ecma262/#sec-promise.reject\n$({ target: 'Promise', stat: true, forced: FORCED_PROMISE_CONSTRUCTOR }, {\n reject: function reject(r) {\n var capability = newPromiseCapabilityModule.f(this);\n var capabilityReject = capability.reject;\n capabilityReject(r);\n return capability.promise;\n }\n});\n", "'use strict';\nvar anObject = require('../internals/an-object');\nvar isObject = require('../internals/is-object');\nvar newPromiseCapability = require('../internals/new-promise-capability');\n\nmodule.exports = function (C, x) {\n anObject(C);\n if (isObject(x) && x.constructor === C) return x;\n var promiseCapability = newPromiseCapability.f(C);\n var resolve = promiseCapability.resolve;\n resolve(x);\n return promiseCapability.promise;\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar getBuiltIn = require('../internals/get-built-in');\nvar IS_PURE = require('../internals/is-pure');\nvar NativePromiseConstructor = require('../internals/promise-native-constructor');\nvar FORCED_PROMISE_CONSTRUCTOR = require('../internals/promise-constructor-detection').CONSTRUCTOR;\nvar promiseResolve = require('../internals/promise-resolve');\n\nvar PromiseConstructorWrapper = getBuiltIn('Promise');\nvar CHECK_WRAPPER = IS_PURE && !FORCED_PROMISE_CONSTRUCTOR;\n\n// `Promise.resolve` method\n// https://tc39.es/ecma262/#sec-promise.resolve\n$({ target: 'Promise', stat: true, forced: IS_PURE || FORCED_PROMISE_CONSTRUCTOR }, {\n resolve: function resolve(x) {\n return promiseResolve(CHECK_WRAPPER && this === PromiseConstructorWrapper ? NativePromiseConstructor : this, x);\n }\n});\n", "'use strict';\n// TODO: Remove this module from `core-js@4` since it's split to modules listed below\nrequire('../modules/es.promise.constructor');\nrequire('../modules/es.promise.all');\nrequire('../modules/es.promise.catch');\nrequire('../modules/es.promise.race');\nrequire('../modules/es.promise.reject');\nrequire('../modules/es.promise.resolve');\n", "'use strict';\nvar $ = require('../internals/export');\nvar call = require('../internals/function-call');\nvar aCallable = require('../internals/a-callable');\nvar newPromiseCapabilityModule = require('../internals/new-promise-capability');\nvar perform = require('../internals/perform');\nvar iterate = require('../internals/iterate');\nvar PROMISE_STATICS_INCORRECT_ITERATION = require('../internals/promise-statics-incorrect-iteration');\n\n// `Promise.allSettled` method\n// https://tc39.es/ecma262/#sec-promise.allsettled\n$({ target: 'Promise', stat: true, forced: PROMISE_STATICS_INCORRECT_ITERATION }, {\n allSettled: function allSettled(iterable) {\n var C = this;\n var capability = newPromiseCapabilityModule.f(C);\n var resolve = capability.resolve;\n var reject = capability.reject;\n var result = perform(function () {\n var promiseResolve = aCallable(C.resolve);\n var values = [];\n var counter = 0;\n var remaining = 1;\n iterate(iterable, function (promise) {\n var index = counter++;\n var alreadyCalled = false;\n remaining++;\n call(promiseResolve, C, promise).then(function (value) {\n if (alreadyCalled) return;\n alreadyCalled = true;\n values[index] = { status: 'fulfilled', value: value };\n --remaining || resolve(values);\n }, function (error) {\n if (alreadyCalled) return;\n alreadyCalled = true;\n values[index] = { status: 'rejected', reason: error };\n --remaining || resolve(values);\n });\n });\n --remaining || resolve(values);\n });\n if (result.error) reject(result.value);\n return capability.promise;\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar call = require('../internals/function-call');\nvar aCallable = require('../internals/a-callable');\nvar getBuiltIn = require('../internals/get-built-in');\nvar newPromiseCapabilityModule = require('../internals/new-promise-capability');\nvar perform = require('../internals/perform');\nvar iterate = require('../internals/iterate');\nvar PROMISE_STATICS_INCORRECT_ITERATION = require('../internals/promise-statics-incorrect-iteration');\n\nvar PROMISE_ANY_ERROR = 'No one promise resolved';\n\n// `Promise.any` method\n// https://tc39.es/ecma262/#sec-promise.any\n$({ target: 'Promise', stat: true, forced: PROMISE_STATICS_INCORRECT_ITERATION }, {\n any: function any(iterable) {\n var C = this;\n var AggregateError = getBuiltIn('AggregateError');\n var capability = newPromiseCapabilityModule.f(C);\n var resolve = capability.resolve;\n var reject = capability.reject;\n var result = perform(function () {\n var promiseResolve = aCallable(C.resolve);\n var errors = [];\n var counter = 0;\n var remaining = 1;\n var alreadyResolved = false;\n iterate(iterable, function (promise) {\n var index = counter++;\n var alreadyRejected = false;\n remaining++;\n call(promiseResolve, C, promise).then(function (value) {\n if (alreadyRejected || alreadyResolved) return;\n alreadyResolved = true;\n resolve(value);\n }, function (error) {\n if (alreadyRejected || alreadyResolved) return;\n alreadyRejected = true;\n errors[index] = error;\n --remaining || reject(new AggregateError(errors, PROMISE_ANY_ERROR));\n });\n });\n --remaining || reject(new AggregateError(errors, PROMISE_ANY_ERROR));\n });\n if (result.error) reject(result.value);\n return capability.promise;\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar IS_PURE = require('../internals/is-pure');\nvar NativePromiseConstructor = require('../internals/promise-native-constructor');\nvar fails = require('../internals/fails');\nvar getBuiltIn = require('../internals/get-built-in');\nvar isCallable = require('../internals/is-callable');\nvar speciesConstructor = require('../internals/species-constructor');\nvar promiseResolve = require('../internals/promise-resolve');\nvar defineBuiltIn = require('../internals/define-built-in');\n\nvar NativePromisePrototype = NativePromiseConstructor && NativePromiseConstructor.prototype;\n\n// Safari bug https://bugs.webkit.org/show_bug.cgi?id=200829\nvar NON_GENERIC = !!NativePromiseConstructor && fails(function () {\n // eslint-disable-next-line unicorn/no-thenable -- required for testing\n NativePromisePrototype['finally'].call({ then: function () { /* empty */ } }, function () { /* empty */ });\n});\n\n// `Promise.prototype.finally` method\n// https://tc39.es/ecma262/#sec-promise.prototype.finally\n$({ target: 'Promise', proto: true, real: true, forced: NON_GENERIC }, {\n 'finally': function (onFinally) {\n var C = speciesConstructor(this, getBuiltIn('Promise'));\n var isFunction = isCallable(onFinally);\n return this.then(\n isFunction ? function (x) {\n return promiseResolve(C, onFinally()).then(function () { return x; });\n } : onFinally,\n isFunction ? function (e) {\n return promiseResolve(C, onFinally()).then(function () { throw e; });\n } : onFinally\n );\n }\n});\n\n// makes sure that native promise-based APIs `Promise#finally` properly works with patched `Promise#then`\nif (!IS_PURE && isCallable(NativePromiseConstructor)) {\n var method = getBuiltIn('Promise').prototype['finally'];\n if (NativePromisePrototype['finally'] !== method) {\n defineBuiltIn(NativePromisePrototype, 'finally', method, { unsafe: true });\n }\n}\n", "'use strict';\nvar $ = require('../internals/export');\nvar globalThis = require('../internals/global-this');\nvar apply = require('../internals/function-apply');\nvar slice = require('../internals/array-slice');\nvar newPromiseCapabilityModule = require('../internals/new-promise-capability');\nvar aCallable = require('../internals/a-callable');\nvar perform = require('../internals/perform');\n\nvar Promise = globalThis.Promise;\n\nvar ACCEPT_ARGUMENTS = false;\n// Avoiding the use of polyfills of the previous iteration of this proposal\n// that does not accept arguments of the callback\nvar FORCED = !Promise || !Promise['try'] || perform(function () {\n Promise['try'](function (argument) {\n ACCEPT_ARGUMENTS = argument === 8;\n }, 8);\n}).error || !ACCEPT_ARGUMENTS;\n\n// `Promise.try` method\n// https://tc39.es/ecma262/#sec-promise.try\n$({ target: 'Promise', stat: true, forced: FORCED }, {\n 'try': function (callbackfn /* , ...args */) {\n var args = arguments.length > 1 ? slice(arguments, 1) : [];\n var promiseCapability = newPromiseCapabilityModule.f(this);\n var result = perform(function () {\n return apply(aCallable(callbackfn), undefined, args);\n });\n (result.error ? promiseCapability.reject : promiseCapability.resolve)(result.value);\n return promiseCapability.promise;\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar newPromiseCapabilityModule = require('../internals/new-promise-capability');\n\n// `Promise.withResolvers` method\n// https://tc39.es/ecma262/#sec-promise.withResolvers\n$({ target: 'Promise', stat: true }, {\n withResolvers: function withResolvers() {\n var promiseCapability = newPromiseCapabilityModule.f(this);\n return {\n promise: promiseCapability.promise,\n resolve: promiseCapability.resolve,\n reject: promiseCapability.reject\n };\n }\n});\n", "'use strict';\nvar globalThis = require('../internals/global-this');\nvar shared = require('../internals/shared-store');\nvar isCallable = require('../internals/is-callable');\nvar create = require('../internals/object-create');\nvar getPrototypeOf = require('../internals/object-get-prototype-of');\nvar defineBuiltIn = require('../internals/define-built-in');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\nvar IS_PURE = require('../internals/is-pure');\n\nvar USE_FUNCTION_CONSTRUCTOR = 'USE_FUNCTION_CONSTRUCTOR';\nvar ASYNC_ITERATOR = wellKnownSymbol('asyncIterator');\nvar AsyncIterator = globalThis.AsyncIterator;\nvar PassedAsyncIteratorPrototype = shared.AsyncIteratorPrototype;\nvar AsyncIteratorPrototype, prototype;\n\nif (PassedAsyncIteratorPrototype) {\n AsyncIteratorPrototype = PassedAsyncIteratorPrototype;\n} else if (isCallable(AsyncIterator)) {\n AsyncIteratorPrototype = AsyncIterator.prototype;\n} else if (shared[USE_FUNCTION_CONSTRUCTOR] || globalThis[USE_FUNCTION_CONSTRUCTOR]) {\n try {\n // eslint-disable-next-line no-new-func -- we have no alternatives without usage of modern syntax\n prototype = getPrototypeOf(getPrototypeOf(getPrototypeOf(Function('return async function*(){}()')())));\n if (getPrototypeOf(prototype) === Object.prototype) AsyncIteratorPrototype = prototype;\n } catch (error) { /* empty */ }\n}\n\nif (!AsyncIteratorPrototype) AsyncIteratorPrototype = {};\nelse if (IS_PURE) AsyncIteratorPrototype = create(AsyncIteratorPrototype);\n\nif (!isCallable(AsyncIteratorPrototype[ASYNC_ITERATOR])) {\n defineBuiltIn(AsyncIteratorPrototype, ASYNC_ITERATOR, function () {\n return this;\n });\n}\n\nmodule.exports = AsyncIteratorPrototype;\n", "'use strict';\nvar call = require('../internals/function-call');\nvar anObject = require('../internals/an-object');\nvar create = require('../internals/object-create');\nvar getMethod = require('../internals/get-method');\nvar defineBuiltIns = require('../internals/define-built-ins');\nvar InternalStateModule = require('../internals/internal-state');\nvar iteratorClose = require('../internals/iterator-close');\nvar getBuiltIn = require('../internals/get-built-in');\nvar AsyncIteratorPrototype = require('../internals/async-iterator-prototype');\nvar createIterResultObject = require('../internals/create-iter-result-object');\n\nvar Promise = getBuiltIn('Promise');\n\nvar ASYNC_FROM_SYNC_ITERATOR = 'AsyncFromSyncIterator';\nvar setInternalState = InternalStateModule.set;\nvar getInternalState = InternalStateModule.getterFor(ASYNC_FROM_SYNC_ITERATOR);\n\nvar asyncFromSyncIteratorContinuation = function (result, resolve, reject, syncIterator, closeOnRejection) {\n var done = result.done;\n Promise.resolve(result.value).then(function (value) {\n resolve(createIterResultObject(value, done));\n }, function (error) {\n if (!done && closeOnRejection) {\n try {\n iteratorClose(syncIterator, 'throw', error);\n } catch (error2) {\n error = error2;\n }\n }\n\n reject(error);\n });\n};\n\nvar AsyncFromSyncIterator = function AsyncIterator(iteratorRecord) {\n iteratorRecord.type = ASYNC_FROM_SYNC_ITERATOR;\n setInternalState(this, iteratorRecord);\n};\n\nAsyncFromSyncIterator.prototype = defineBuiltIns(create(AsyncIteratorPrototype), {\n next: function next() {\n var state = getInternalState(this);\n var hasValue = arguments.length > 0;\n var value = hasValue ? arguments[0] : undefined;\n return new Promise(function (resolve, reject) {\n var result = anObject(hasValue ? call(state.next, state.iterator, value) : call(state.next, state.iterator));\n asyncFromSyncIteratorContinuation(result, resolve, reject, state.iterator, true);\n });\n },\n 'return': function () {\n var state = getInternalState(this);\n var iterator = state.iterator;\n var hasValue = arguments.length > 0;\n var value = hasValue ? arguments[0] : undefined;\n return new Promise(function (resolve, reject) {\n var $return = getMethod(iterator, 'return');\n if ($return === undefined) return resolve(createIterResultObject(value, true));\n var result = anObject(hasValue ? call($return, iterator, value) : call($return, iterator));\n asyncFromSyncIteratorContinuation(result, resolve, reject, iterator);\n });\n },\n 'throw': function () {\n var state = getInternalState(this);\n var iterator = state.iterator;\n var hasValue = arguments.length > 0;\n var value = hasValue ? arguments[0] : undefined;\n return new Promise(function (resolve, reject) {\n var $throw = getMethod(iterator, 'throw');\n if ($throw === undefined) {\n try {\n iteratorClose(iterator, 'normal');\n } catch (error) {\n return reject(error);\n }\n return reject(new TypeError('The iterator does not provide a throw method'));\n }\n var result = anObject(hasValue ? call($throw, iterator, value) : call($throw, iterator));\n asyncFromSyncIteratorContinuation(result, resolve, reject, iterator, true);\n });\n }\n});\n\nmodule.exports = AsyncFromSyncIterator;\n", "'use strict';\nvar call = require('../internals/function-call');\nvar AsyncFromSyncIterator = require('../internals/async-from-sync-iterator');\nvar anObject = require('../internals/an-object');\nvar getIterator = require('../internals/get-iterator');\nvar getIteratorDirect = require('../internals/get-iterator-direct');\nvar getMethod = require('../internals/get-method');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\n\nvar ASYNC_ITERATOR = wellKnownSymbol('asyncIterator');\n\nmodule.exports = function (it, usingIterator) {\n var method = arguments.length < 2 ? getMethod(it, ASYNC_ITERATOR) : usingIterator;\n return method ? anObject(call(method, it)) : new AsyncFromSyncIterator(getIteratorDirect(getIterator(it)));\n};\n", "'use strict';\nvar call = require('../internals/function-call');\nvar anObject = require('../internals/an-object');\nvar getBuiltIn = require('../internals/get-built-in');\nvar getMethod = require('../internals/get-method');\n\nmodule.exports = function (iterator, method, argument, reject) {\n try {\n var returnMethod = getMethod(iterator, 'return');\n if (returnMethod) {\n return getBuiltIn('Promise').resolve(call(returnMethod, iterator)).then(function (result) {\n try {\n if (method !== reject) anObject(result);\n } catch (error3) {\n reject(error3);\n return;\n }\n method(argument);\n }, function (error) {\n method === reject ? method(argument) : reject(error);\n });\n }\n } catch (error2) {\n // the original error (`argument`) takes priority over `return()` errors\n return method === reject ? reject(argument) : reject(error2);\n } method(argument);\n};\n", "'use strict';\n// https://github.com/tc39/proposal-async-iterator-helpers\n// https://github.com/tc39/proposal-array-from-async\nvar call = require('../internals/function-call');\nvar aCallable = require('../internals/a-callable');\nvar anObject = require('../internals/an-object');\nvar isObject = require('../internals/is-object');\nvar doesNotExceedSafeInteger = require('../internals/does-not-exceed-safe-integer');\nvar getBuiltIn = require('../internals/get-built-in');\nvar createProperty = require('../internals/create-property');\nvar setArrayLength = require('../internals/array-set-length');\nvar getIteratorDirect = require('../internals/get-iterator-direct');\nvar closeAsyncIteration = require('../internals/async-iterator-close');\n\nvar createMethod = function (TYPE) {\n var IS_TO_ARRAY = TYPE === 0;\n var IS_FOR_EACH = TYPE === 1;\n var IS_EVERY = TYPE === 2;\n var IS_SOME = TYPE === 3;\n return function (object, fn, target) {\n anObject(object);\n var MAPPING = fn !== undefined;\n if (MAPPING || !IS_TO_ARRAY) aCallable(fn);\n var record = getIteratorDirect(object);\n var Promise = getBuiltIn('Promise');\n var iterator = record.iterator;\n var next = record.next;\n var counter = 0;\n\n return new Promise(function (resolve, reject) {\n var ifAbruptCloseAsyncIterator = function (error) {\n closeAsyncIteration(iterator, reject, error, reject);\n };\n\n var loop = function () {\n try {\n try {\n doesNotExceedSafeInteger(counter);\n } catch (error5) {\n return ifAbruptCloseAsyncIterator(error5);\n }\n Promise.resolve(anObject(call(next, iterator))).then(function (step) {\n try {\n if (anObject(step).done) {\n if (IS_TO_ARRAY) {\n setArrayLength(target, counter);\n resolve(target);\n } else resolve(IS_SOME ? false : IS_EVERY || undefined);\n } else {\n var value = step.value;\n try {\n if (MAPPING) {\n var index = counter++;\n var result = fn(value, index);\n\n var handler = function ($result) {\n if (IS_FOR_EACH) {\n loop();\n } else if (IS_EVERY) {\n $result ? loop() : closeAsyncIteration(iterator, resolve, false, reject);\n } else if (IS_TO_ARRAY) {\n try {\n createProperty(target, index, $result);\n loop();\n } catch (error4) { ifAbruptCloseAsyncIterator(error4); }\n } else {\n $result ? closeAsyncIteration(iterator, resolve, IS_SOME || value, reject) : loop();\n }\n };\n\n if (isObject(result)) Promise.resolve(result).then(handler, ifAbruptCloseAsyncIterator);\n else handler(result);\n } else {\n createProperty(target, counter++, value);\n loop();\n }\n } catch (error3) { ifAbruptCloseAsyncIterator(error3); }\n }\n } catch (error2) { reject(error2); }\n }, reject);\n } catch (error) { reject(error); }\n };\n\n loop();\n });\n };\n};\n\nmodule.exports = {\n // `AsyncIterator.prototype.toArray` / `Array.fromAsync` methods\n toArray: createMethod(0),\n // `AsyncIterator.prototype.forEach` method\n forEach: createMethod(1),\n // `AsyncIterator.prototype.every` method\n every: createMethod(2),\n // `AsyncIterator.prototype.some` method\n some: createMethod(3),\n // `AsyncIterator.prototype.find` method\n find: createMethod(4)\n};\n", "'use strict';\nvar bind = require('../internals/function-bind-context');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar isConstructor = require('../internals/is-constructor');\nvar getAsyncIterator = require('../internals/get-async-iterator');\nvar getIterator = require('../internals/get-iterator');\nvar getIteratorDirect = require('../internals/get-iterator-direct');\nvar getIteratorMethod = require('../internals/get-iterator-method');\nvar getMethod = require('../internals/get-method');\nvar getBuiltIn = require('../internals/get-built-in');\nvar getBuiltInPrototypeMethod = require('../internals/get-built-in-prototype-method');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\nvar AsyncFromSyncIterator = require('../internals/async-from-sync-iterator');\nvar toArray = require('../internals/async-iterator-iteration').toArray;\n\nvar ASYNC_ITERATOR = wellKnownSymbol('asyncIterator');\nvar arrayIterator = uncurryThis(getBuiltInPrototypeMethod('Array', 'values'));\nvar arrayIteratorNext = uncurryThis(arrayIterator([]).next);\n\nvar safeArrayIterator = function () {\n return new SafeArrayIterator(this);\n};\n\nvar SafeArrayIterator = function (O) {\n this.iterator = arrayIterator(O);\n};\n\nSafeArrayIterator.prototype.next = function () {\n return arrayIteratorNext(this.iterator);\n};\n\n// `Array.fromAsync` method implementation\n// https://github.com/tc39/proposal-array-from-async\nmodule.exports = function fromAsync(items /* , mapfn = undefined, thisArg = undefined */) {\n var C = this;\n var argumentsLength = arguments.length;\n var mapfn = argumentsLength > 1 ? arguments[1] : undefined;\n var thisArg = argumentsLength > 2 ? arguments[2] : undefined;\n return new (getBuiltIn('Promise'))(function (resolve) {\n if (mapfn !== undefined) mapfn = bind(mapfn, thisArg);\n var usingAsyncIterator = getMethod(items, ASYNC_ITERATOR);\n var usingSyncIterator = usingAsyncIterator ? undefined : getIteratorMethod(items) || safeArrayIterator;\n var A = isConstructor(C) ? new C() : [];\n var iterator = usingAsyncIterator\n ? getAsyncIterator(items, usingAsyncIterator)\n : new AsyncFromSyncIterator(getIteratorDirect(getIterator(items, usingSyncIterator)));\n resolve(toArray(iterator, mapfn, A));\n });\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar fromAsync = require('../internals/array-from-async');\nvar fails = require('../internals/fails');\n\n// eslint-disable-next-line es/no-array-fromasync -- safe\nvar nativeFromAsync = Array.fromAsync;\n// https://bugs.webkit.org/show_bug.cgi?id=271703\nvar INCORRECT_CONSTRUCTURING = !nativeFromAsync || fails(function () {\n var counter = 0;\n nativeFromAsync.call(function () {\n counter++;\n return [];\n }, { length: 0 });\n return counter !== 1;\n});\n\n// `Array.fromAsync` method\n// https://tc39.es/ecma262/#sec-array.fromasync\n$({ target: 'Array', stat: true, forced: INCORRECT_CONSTRUCTURING }, {\n fromAsync: fromAsync\n});\n", "'use strict';\n// https://github.com/tc39/proposal-async-explicit-resource-management\nvar $ = require('../internals/export');\nvar DESCRIPTORS = require('../internals/descriptors');\nvar getBuiltIn = require('../internals/get-built-in');\nvar aCallable = require('../internals/a-callable');\nvar anInstance = require('../internals/an-instance');\nvar defineBuiltIn = require('../internals/define-built-in');\nvar defineBuiltIns = require('../internals/define-built-ins');\nvar defineBuiltInAccessor = require('../internals/define-built-in-accessor');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\nvar InternalStateModule = require('../internals/internal-state');\nvar addDisposableResource = require('../internals/add-disposable-resource');\nvar V8_VERSION = require('../internals/environment-v8-version');\n\nvar Promise = getBuiltIn('Promise');\nvar SuppressedError = getBuiltIn('SuppressedError');\nvar $ReferenceError = ReferenceError;\n\nvar ASYNC_DISPOSE = wellKnownSymbol('asyncDispose');\nvar TO_STRING_TAG = wellKnownSymbol('toStringTag');\n\nvar ASYNC_DISPOSABLE_STACK = 'AsyncDisposableStack';\nvar setInternalState = InternalStateModule.set;\nvar getAsyncDisposableStackInternalState = InternalStateModule.getterFor(ASYNC_DISPOSABLE_STACK);\n\nvar HINT = 'async-dispose';\nvar DISPOSED = 'disposed';\nvar PENDING = 'pending';\n\nvar getPendingAsyncDisposableStackInternalState = function (stack) {\n var internalState = getAsyncDisposableStackInternalState(stack);\n if (internalState.state === DISPOSED) throw new $ReferenceError(ASYNC_DISPOSABLE_STACK + ' already disposed');\n return internalState;\n};\n\nvar $AsyncDisposableStack = function AsyncDisposableStack() {\n setInternalState(anInstance(this, AsyncDisposableStackPrototype), {\n type: ASYNC_DISPOSABLE_STACK,\n state: PENDING,\n stack: []\n });\n\n if (!DESCRIPTORS) this.disposed = false;\n};\n\nvar AsyncDisposableStackPrototype = $AsyncDisposableStack.prototype;\n\ndefineBuiltIns(AsyncDisposableStackPrototype, {\n disposeAsync: function disposeAsync() {\n var asyncDisposableStack = this;\n return new Promise(function (resolve, reject) {\n var internalState = getAsyncDisposableStackInternalState(asyncDisposableStack);\n if (internalState.state === DISPOSED) return resolve(undefined);\n internalState.state = DISPOSED;\n if (!DESCRIPTORS) asyncDisposableStack.disposed = true;\n var stack = internalState.stack;\n var i = stack.length;\n var thrown = false;\n var suppressed;\n\n var handleError = function (result) {\n if (thrown) {\n suppressed = new SuppressedError(result, suppressed);\n } else {\n thrown = true;\n suppressed = result;\n }\n\n loop();\n };\n\n var loop = function () {\n if (i) {\n var disposeMethod = stack[--i];\n stack[i] = null;\n try {\n Promise.resolve(disposeMethod()).then(loop, handleError);\n } catch (error) {\n handleError(error);\n }\n } else {\n internalState.stack = null;\n thrown ? reject(suppressed) : resolve(undefined);\n }\n };\n\n loop();\n });\n },\n use: function use(value) {\n addDisposableResource(getPendingAsyncDisposableStackInternalState(this), value, HINT);\n return value;\n },\n adopt: function adopt(value, onDispose) {\n var internalState = getPendingAsyncDisposableStackInternalState(this);\n aCallable(onDispose);\n addDisposableResource(internalState, undefined, HINT, function () {\n return onDispose(value);\n });\n return value;\n },\n defer: function defer(onDispose) {\n var internalState = getPendingAsyncDisposableStackInternalState(this);\n aCallable(onDispose);\n addDisposableResource(internalState, undefined, HINT, onDispose);\n },\n move: function move() {\n var internalState = getPendingAsyncDisposableStackInternalState(this);\n var newAsyncDisposableStack = new $AsyncDisposableStack();\n getAsyncDisposableStackInternalState(newAsyncDisposableStack).stack = internalState.stack;\n internalState.stack = [];\n internalState.state = DISPOSED;\n if (!DESCRIPTORS) this.disposed = true;\n return newAsyncDisposableStack;\n }\n});\n\nif (DESCRIPTORS) defineBuiltInAccessor(AsyncDisposableStackPrototype, 'disposed', {\n configurable: true,\n get: function disposed() {\n return getAsyncDisposableStackInternalState(this).state === DISPOSED;\n }\n});\n\ndefineBuiltIn(AsyncDisposableStackPrototype, ASYNC_DISPOSE, AsyncDisposableStackPrototype.disposeAsync, { name: 'disposeAsync' });\ndefineBuiltIn(AsyncDisposableStackPrototype, TO_STRING_TAG, ASYNC_DISPOSABLE_STACK, { nonWritable: true });\n\n// https://github.com/tc39/proposal-explicit-resource-management/issues/256\n// can't be detected synchronously\nvar SYNC_DISPOSE_RETURNING_PROMISE_RESOLUTION_BUG = V8_VERSION && V8_VERSION < 136;\n\n$({ global: true, constructor: true, forced: SYNC_DISPOSE_RETURNING_PROMISE_RESOLUTION_BUG }, {\n AsyncDisposableStack: $AsyncDisposableStack\n});\n", "'use strict';\n// https://github.com/tc39/proposal-async-explicit-resource-management\nvar call = require('../internals/function-call');\nvar defineBuiltIn = require('../internals/define-built-in');\nvar getBuiltIn = require('../internals/get-built-in');\nvar getMethod = require('../internals/get-method');\nvar hasOwn = require('../internals/has-own-property');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\nvar AsyncIteratorPrototype = require('../internals/async-iterator-prototype');\n\nvar ASYNC_DISPOSE = wellKnownSymbol('asyncDispose');\nvar Promise = getBuiltIn('Promise');\n\nif (!hasOwn(AsyncIteratorPrototype, ASYNC_DISPOSE)) {\n defineBuiltIn(AsyncIteratorPrototype, ASYNC_DISPOSE, function () {\n var O = this;\n return new Promise(function (resolve, reject) {\n var $return = getMethod(O, 'return');\n if ($return) {\n Promise.resolve(call($return, O)).then(function () {\n resolve(undefined);\n }, reject);\n } else resolve(undefined);\n });\n });\n}\n", "'use strict';\nvar $ = require('../internals/export');\nvar functionApply = require('../internals/function-apply');\nvar aCallable = require('../internals/a-callable');\nvar anObject = require('../internals/an-object');\nvar fails = require('../internals/fails');\n\n// MS Edge argumentsList argument is optional\nvar OPTIONAL_ARGUMENTS_LIST = !fails(function () {\n // eslint-disable-next-line es/no-reflect -- required for testing\n Reflect.apply(function () { /* empty */ });\n});\n\n// `Reflect.apply` method\n// https://tc39.es/ecma262/#sec-reflect.apply\n$({ target: 'Reflect', stat: true, forced: OPTIONAL_ARGUMENTS_LIST }, {\n apply: function apply(target, thisArgument, argumentsList) {\n return functionApply(aCallable(target), thisArgument, anObject(argumentsList));\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar getBuiltIn = require('../internals/get-built-in');\nvar apply = require('../internals/function-apply');\nvar bind = require('../internals/function-bind');\nvar aConstructor = require('../internals/a-constructor');\nvar anObject = require('../internals/an-object');\nvar isObject = require('../internals/is-object');\nvar create = require('../internals/object-create');\nvar fails = require('../internals/fails');\n\nvar nativeConstruct = getBuiltIn('Reflect', 'construct');\nvar ObjectPrototype = Object.prototype;\nvar push = [].push;\n\n// `Reflect.construct` method\n// https://tc39.es/ecma262/#sec-reflect.construct\n// MS Edge supports only 2 arguments and argumentsList argument is optional\n// FF Nightly sets third argument as `new.target`, but does not create `this` from it\nvar NEW_TARGET_BUG = fails(function () {\n function F() { /* empty */ }\n return !(nativeConstruct(function () { /* empty */ }, [], F) instanceof F);\n});\n\nvar ARGS_BUG = !fails(function () {\n nativeConstruct(function () { /* empty */ });\n});\n\nvar FORCED = NEW_TARGET_BUG || ARGS_BUG;\n\n$({ target: 'Reflect', stat: true, forced: FORCED, sham: FORCED }, {\n construct: function construct(Target, args /* , newTarget */) {\n aConstructor(Target);\n var newTarget = arguments.length < 3 ? Target : aConstructor(arguments[2]);\n anObject(args);\n if (ARGS_BUG && !NEW_TARGET_BUG) return nativeConstruct(Target, args, newTarget);\n if (Target === newTarget) {\n // w/o altered newTarget, optimization for 0-4 arguments\n switch (args.length) {\n case 0: return new Target();\n case 1: return new Target(args[0]);\n case 2: return new Target(args[0], args[1]);\n case 3: return new Target(args[0], args[1], args[2]);\n case 4: return new Target(args[0], args[1], args[2], args[3]);\n }\n // w/o altered newTarget, lot of arguments case\n var $args = [null];\n apply(push, $args, args);\n return new (apply(bind, Target, $args))();\n }\n // with altered newTarget, not support built-in constructors\n var proto = newTarget.prototype;\n var instance = create(isObject(proto) ? proto : ObjectPrototype);\n var result = apply(Target, instance, args);\n return isObject(result) ? result : instance;\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar DESCRIPTORS = require('../internals/descriptors');\nvar anObject = require('../internals/an-object');\nvar toPropertyKey = require('../internals/to-property-key');\nvar definePropertyModule = require('../internals/object-define-property');\nvar isCallable = require('../internals/is-callable');\nvar fails = require('../internals/fails');\n\nvar $TypeError = TypeError;\n\n// MS Edge has broken Reflect.defineProperty - throwing instead of returning false\nvar ERROR_INSTEAD_OF_FALSE = fails(function () {\n // eslint-disable-next-line es/no-reflect -- required for testing\n Reflect.defineProperty(definePropertyModule.f({}, 1, { value: 1 }), 1, { value: 2 });\n});\n\n// `Reflect.defineProperty` method\n// https://tc39.es/ecma262/#sec-reflect.defineproperty\n$({ target: 'Reflect', stat: true, forced: ERROR_INSTEAD_OF_FALSE, sham: !DESCRIPTORS }, {\n defineProperty: function defineProperty(target, propertyKey, attributes) {\n anObject(target);\n var key = toPropertyKey(propertyKey);\n var get, set;\n anObject(attributes);\n // propagate `ToPropertyDescriptor` errors instead of catching them\n if (('get' in attributes || 'set' in attributes) && (\n ('get' in attributes && !isCallable(get = attributes.get) && get !== undefined) ||\n ('set' in attributes && !isCallable(set = attributes.set) && set !== undefined) ||\n ('value' in attributes || 'writable' in attributes)\n )) throw new $TypeError('Invalid property descriptor');\n try {\n definePropertyModule.f(target, key, attributes);\n return true;\n } catch (error) {\n return false;\n }\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar anObject = require('../internals/an-object');\nvar getOwnPropertyDescriptor = require('../internals/object-get-own-property-descriptor').f;\nvar toPropertyKey = require('../internals/to-property-key');\n\n// `Reflect.deleteProperty` method\n// https://tc39.es/ecma262/#sec-reflect.deleteproperty\n$({ target: 'Reflect', stat: true }, {\n deleteProperty: function deleteProperty(target, propertyKey) {\n anObject(target);\n var key = toPropertyKey(propertyKey);\n var descriptor = getOwnPropertyDescriptor(target, key);\n return descriptor && !descriptor.configurable ? false : delete target[key];\n }\n});\n", "'use strict';\nvar hasOwn = require('../internals/has-own-property');\n\nmodule.exports = function (descriptor) {\n return descriptor !== undefined && (hasOwn(descriptor, 'value') || hasOwn(descriptor, 'writable'));\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar call = require('../internals/function-call');\nvar isObject = require('../internals/is-object');\nvar anObject = require('../internals/an-object');\nvar isDataDescriptor = require('../internals/is-data-descriptor');\nvar getOwnPropertyDescriptorModule = require('../internals/object-get-own-property-descriptor');\nvar getPrototypeOf = require('../internals/object-get-prototype-of');\nvar toPropertyKey = require('../internals/to-property-key');\n\n// `Reflect.get` method\n// https://tc39.es/ecma262/#sec-reflect.get\nvar $get = function (target, propertyKey, receiver) {\n if (anObject(target) === receiver) return target[propertyKey];\n var descriptor = getOwnPropertyDescriptorModule.f(target, propertyKey);\n if (descriptor) return isDataDescriptor(descriptor)\n ? descriptor.value\n : descriptor.get === undefined ? undefined : call(descriptor.get, receiver);\n var prototype = getPrototypeOf(target);\n if (isObject(prototype)) return $get(prototype, propertyKey, receiver);\n};\n\n$({ target: 'Reflect', stat: true }, {\n get: function get(target, propertyKey /* , receiver */) {\n return $get(anObject(target), toPropertyKey(propertyKey), arguments.length < 3 ? target : arguments[2]);\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar DESCRIPTORS = require('../internals/descriptors');\nvar anObject = require('../internals/an-object');\nvar getOwnPropertyDescriptorModule = require('../internals/object-get-own-property-descriptor');\n\n// `Reflect.getOwnPropertyDescriptor` method\n// https://tc39.es/ecma262/#sec-reflect.getownpropertydescriptor\n$({ target: 'Reflect', stat: true, sham: !DESCRIPTORS }, {\n getOwnPropertyDescriptor: function getOwnPropertyDescriptor(target, propertyKey) {\n return getOwnPropertyDescriptorModule.f(anObject(target), propertyKey);\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar anObject = require('../internals/an-object');\nvar objectGetPrototypeOf = require('../internals/object-get-prototype-of');\nvar CORRECT_PROTOTYPE_GETTER = require('../internals/correct-prototype-getter');\n\n// `Reflect.getPrototypeOf` method\n// https://tc39.es/ecma262/#sec-reflect.getprototypeof\n$({ target: 'Reflect', stat: true, sham: !CORRECT_PROTOTYPE_GETTER }, {\n getPrototypeOf: function getPrototypeOf(target) {\n return objectGetPrototypeOf(anObject(target));\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\n\n// `Reflect.has` method\n// https://tc39.es/ecma262/#sec-reflect.has\n$({ target: 'Reflect', stat: true }, {\n has: function has(target, propertyKey) {\n return propertyKey in target;\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar anObject = require('../internals/an-object');\nvar $isExtensible = require('../internals/object-is-extensible');\n\n// `Reflect.isExtensible` method\n// https://tc39.es/ecma262/#sec-reflect.isextensible\n$({ target: 'Reflect', stat: true }, {\n isExtensible: function isExtensible(target) {\n anObject(target);\n return $isExtensible(target);\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar ownKeys = require('../internals/own-keys');\n\n// `Reflect.ownKeys` method\n// https://tc39.es/ecma262/#sec-reflect.ownkeys\n$({ target: 'Reflect', stat: true }, {\n ownKeys: ownKeys\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar getBuiltIn = require('../internals/get-built-in');\nvar anObject = require('../internals/an-object');\nvar FREEZING = require('../internals/freezing');\n\n// `Reflect.preventExtensions` method\n// https://tc39.es/ecma262/#sec-reflect.preventextensions\n$({ target: 'Reflect', stat: true, sham: !FREEZING }, {\n preventExtensions: function preventExtensions(target) {\n anObject(target);\n try {\n var objectPreventExtensions = getBuiltIn('Object', 'preventExtensions');\n if (objectPreventExtensions) objectPreventExtensions(target);\n return true;\n } catch (error) {\n return false;\n }\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar call = require('../internals/function-call');\nvar anObject = require('../internals/an-object');\nvar isObject = require('../internals/is-object');\nvar isDataDescriptor = require('../internals/is-data-descriptor');\nvar fails = require('../internals/fails');\nvar definePropertyModule = require('../internals/object-define-property');\nvar getOwnPropertyDescriptorModule = require('../internals/object-get-own-property-descriptor');\nvar getPrototypeOf = require('../internals/object-get-prototype-of');\nvar createPropertyDescriptor = require('../internals/create-property-descriptor');\nvar toPropertyKey = require('../internals/to-property-key');\n\n// `Reflect.set` method\n// https://tc39.es/ecma262/#sec-reflect.set\nvar $set = function (target, propertyKey, V, receiver) {\n var ownDescriptor = getOwnPropertyDescriptorModule.f(anObject(target), propertyKey);\n var existingDescriptor, prototype, setter;\n if (!ownDescriptor) {\n if (isObject(prototype = getPrototypeOf(target))) {\n return $set(prototype, propertyKey, V, receiver);\n }\n ownDescriptor = createPropertyDescriptor(0);\n }\n if (isDataDescriptor(ownDescriptor)) {\n if (ownDescriptor.writable === false || !isObject(receiver)) return false;\n if (existingDescriptor = getOwnPropertyDescriptorModule.f(receiver, propertyKey)) {\n if (!isDataDescriptor(existingDescriptor) || existingDescriptor.writable === false) return false;\n definePropertyModule.f(receiver, propertyKey, { value: V });\n } else try {\n definePropertyModule.f(receiver, propertyKey, createPropertyDescriptor(0, V));\n } catch (error) {\n return false;\n }\n } else {\n setter = ownDescriptor.set;\n if (setter === undefined) return false;\n call(setter, receiver, V);\n } return true;\n};\n\n// MS Edge 17-18 Reflect.set allows setting the property to object\n// with non-writable property on the prototype\nvar MS_EDGE_BUG = fails(function () {\n var Constructor = function () { /* empty */ };\n var object = definePropertyModule.f(new Constructor(), 'a', { configurable: true });\n // eslint-disable-next-line es/no-reflect -- required for testing\n return Reflect.set(Constructor.prototype, 'a', 1, object) !== false;\n});\n\n$({ target: 'Reflect', stat: true, forced: MS_EDGE_BUG }, {\n set: function set(target, propertyKey, V /* , receiver */) {\n return $set(anObject(target), toPropertyKey(propertyKey), V, arguments.length < 4 ? target : arguments[3]);\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar anObject = require('../internals/an-object');\nvar aPossiblePrototype = require('../internals/a-possible-prototype');\nvar objectSetPrototypeOf = require('../internals/object-set-prototype-of');\n\n// `Reflect.setPrototypeOf` method\n// https://tc39.es/ecma262/#sec-reflect.setprototypeof\nif (objectSetPrototypeOf) $({ target: 'Reflect', stat: true }, {\n setPrototypeOf: function setPrototypeOf(target, proto) {\n anObject(target);\n aPossiblePrototype(proto);\n try {\n objectSetPrototypeOf(target, proto);\n return true;\n } catch (error) {\n return false;\n }\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar globalThis = require('../internals/global-this');\nvar setToStringTag = require('../internals/set-to-string-tag');\n\n$({ global: true }, { Reflect: {} });\n\n// Reflect[@@toStringTag] property\n// https://tc39.es/ecma262/#sec-reflect-@@tostringtag\nsetToStringTag(globalThis.Reflect, 'Reflect', true);\n", "'use strict';\nvar isObject = require('../internals/is-object');\nvar classof = require('../internals/classof-raw');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\n\nvar MATCH = wellKnownSymbol('match');\n\n// `IsRegExp` abstract operation\n// https://tc39.es/ecma262/#sec-isregexp\nmodule.exports = function (it) {\n var isRegExp;\n return isObject(it) && ((isRegExp = it[MATCH]) !== undefined ? !!isRegExp : classof(it) === 'RegExp');\n};\n", "'use strict';\nvar globalThis = require('../internals/global-this');\nvar fails = require('../internals/fails');\n\n// babel-minify and Closure Compiler transpiles RegExp('.', 'd') -> /./d and it causes SyntaxError\nvar RegExp = globalThis.RegExp;\n\nvar FLAGS_GETTER_IS_CORRECT = !fails(function () {\n var INDICES_SUPPORT = true;\n try {\n RegExp('.', 'd');\n } catch (error) {\n INDICES_SUPPORT = false;\n }\n\n var O = {};\n // modern V8 bug\n var calls = '';\n var expected = INDICES_SUPPORT ? 'dgimsy' : 'gimsy';\n\n var addGetter = function (key, chr) {\n // eslint-disable-next-line es/no-object-defineproperty -- safe\n Object.defineProperty(O, key, { get: function () {\n calls += chr;\n return true;\n } });\n };\n\n var pairs = {\n dotAll: 's',\n global: 'g',\n ignoreCase: 'i',\n multiline: 'm',\n sticky: 'y'\n };\n\n if (INDICES_SUPPORT) pairs.hasIndices = 'd';\n\n for (var key in pairs) addGetter(key, pairs[key]);\n\n // eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe\n var result = Object.getOwnPropertyDescriptor(RegExp.prototype, 'flags').get.call(O);\n\n return result !== expected || calls !== expected;\n});\n\nmodule.exports = { correct: FLAGS_GETTER_IS_CORRECT };\n", "'use strict';\nvar anObject = require('../internals/an-object');\n\n// `RegExp.prototype.flags` getter implementation\n// https://tc39.es/ecma262/#sec-get-regexp.prototype.flags\nmodule.exports = function () {\n var that = anObject(this);\n var result = '';\n if (that.hasIndices) result += 'd';\n if (that.global) result += 'g';\n if (that.ignoreCase) result += 'i';\n if (that.multiline) result += 'm';\n if (that.dotAll) result += 's';\n if (that.unicode) result += 'u';\n if (that.unicodeSets) result += 'v';\n if (that.sticky) result += 'y';\n return result;\n};\n", "'use strict';\nvar call = require('../internals/function-call');\nvar hasOwn = require('../internals/has-own-property');\nvar isPrototypeOf = require('../internals/object-is-prototype-of');\nvar regExpFlagsDetection = require('../internals/regexp-flags-detection');\nvar regExpFlagsGetterImplementation = require('../internals/regexp-flags');\n\nvar RegExpPrototype = RegExp.prototype;\n\nmodule.exports = regExpFlagsDetection.correct ? function (it) {\n return it.flags;\n} : function (it) {\n return (!regExpFlagsDetection.correct && isPrototypeOf(RegExpPrototype, it) && !hasOwn(it, 'flags'))\n ? call(regExpFlagsGetterImplementation, it)\n : it.flags;\n};\n", "'use strict';\nvar fails = require('../internals/fails');\nvar globalThis = require('../internals/global-this');\n\n// babel-minify and Closure Compiler transpiles RegExp('a', 'y') -> /a/y and it causes SyntaxError\nvar $RegExp = globalThis.RegExp;\n\nvar UNSUPPORTED_Y = fails(function () {\n var re = $RegExp('a', 'y');\n re.lastIndex = 2;\n return re.exec('abcd') !== null;\n});\n\n// UC Browser bug\n// https://github.com/zloirock/core-js/issues/1008\nvar MISSED_STICKY = UNSUPPORTED_Y || fails(function () {\n return !$RegExp('a', 'y').sticky;\n});\n\nvar BROKEN_CARET = UNSUPPORTED_Y || fails(function () {\n // https://bugzilla.mozilla.org/show_bug.cgi?id=773687\n var re = $RegExp('^r', 'gy');\n re.lastIndex = 2;\n return re.exec('str') !== null;\n});\n\nmodule.exports = {\n BROKEN_CARET: BROKEN_CARET,\n MISSED_STICKY: MISSED_STICKY,\n UNSUPPORTED_Y: UNSUPPORTED_Y\n};\n", "'use strict';\nvar fails = require('../internals/fails');\nvar globalThis = require('../internals/global-this');\n\n// babel-minify and Closure Compiler transpiles RegExp('.', 's') -> /./s and it causes SyntaxError\nvar $RegExp = globalThis.RegExp;\n\nmodule.exports = fails(function () {\n var re = $RegExp('.', 's');\n return !(re.dotAll && re.test('\\n') && re.flags === 's');\n});\n", "'use strict';\nvar fails = require('../internals/fails');\nvar globalThis = require('../internals/global-this');\n\n// babel-minify and Closure Compiler transpiles RegExp('(?b)', 'g') -> /(?b)/g and it causes SyntaxError\nvar $RegExp = globalThis.RegExp;\n\nmodule.exports = fails(function () {\n var re = $RegExp('(?b)', 'g');\n return re.exec('b').groups.a !== 'b' ||\n 'b'.replace(re, '$c') !== 'bc';\n});\n", "'use strict';\nvar DESCRIPTORS = require('../internals/descriptors');\nvar globalThis = require('../internals/global-this');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar isForced = require('../internals/is-forced');\nvar inheritIfRequired = require('../internals/inherit-if-required');\nvar createNonEnumerableProperty = require('../internals/create-non-enumerable-property');\nvar create = require('../internals/object-create');\nvar getOwnPropertyNames = require('../internals/object-get-own-property-names').f;\nvar isPrototypeOf = require('../internals/object-is-prototype-of');\nvar isRegExp = require('../internals/is-regexp');\nvar toString = require('../internals/to-string');\nvar getRegExpFlags = require('../internals/regexp-get-flags');\nvar stickyHelpers = require('../internals/regexp-sticky-helpers');\nvar proxyAccessor = require('../internals/proxy-accessor');\nvar defineBuiltIn = require('../internals/define-built-in');\nvar fails = require('../internals/fails');\nvar hasOwn = require('../internals/has-own-property');\nvar enforceInternalState = require('../internals/internal-state').enforce;\nvar setSpecies = require('../internals/set-species');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\nvar UNSUPPORTED_DOT_ALL = require('../internals/regexp-unsupported-dot-all');\nvar UNSUPPORTED_NCG = require('../internals/regexp-unsupported-ncg');\n\nvar MATCH = wellKnownSymbol('match');\nvar NativeRegExp = globalThis.RegExp;\nvar RegExpPrototype = NativeRegExp.prototype;\nvar SyntaxError = globalThis.SyntaxError;\nvar exec = uncurryThis(RegExpPrototype.exec);\nvar charAt = uncurryThis(''.charAt);\nvar replace = uncurryThis(''.replace);\nvar stringIndexOf = uncurryThis(''.indexOf);\nvar stringSlice = uncurryThis(''.slice);\n// TODO: Use only proper RegExpIdentifierName\nvar IS_NCG = /^\\?<[^\\s\\d!#%&*+<=>@^][^\\s!#%&*+<=>@^]*>/;\nvar re1 = /a/g;\nvar re2 = /a/g;\n\n// \"new\" should create a new object, old webkit bug\nvar CORRECT_NEW = new NativeRegExp(re1) !== re1;\n\nvar MISSED_STICKY = stickyHelpers.MISSED_STICKY;\nvar UNSUPPORTED_Y = stickyHelpers.UNSUPPORTED_Y;\n\nvar BASE_FORCED = DESCRIPTORS &&\n (!CORRECT_NEW || MISSED_STICKY || UNSUPPORTED_DOT_ALL || UNSUPPORTED_NCG || fails(function () {\n re2[MATCH] = false;\n // RegExp constructor can alter flags and IsRegExp works correct with @@match\n // eslint-disable-next-line sonarjs/inconsistent-function-call -- required for testing\n return NativeRegExp(re1) !== re1 || NativeRegExp(re2) === re2 || String(NativeRegExp(re1, 'i')) !== '/a/i';\n }));\n\nvar handleDotAll = function (string) {\n var length = string.length;\n var index = 0;\n var result = '';\n var brackets = false;\n var chr;\n for (; index < length; index++) {\n chr = charAt(string, index);\n if (chr === '\\\\') {\n result += chr + charAt(string, ++index);\n continue;\n }\n if (!brackets && chr === '.') {\n result += '[\\\\s\\\\S]';\n } else {\n if (chr === '[') {\n brackets = true;\n } else if (chr === ']') {\n brackets = false;\n } result += chr;\n }\n } return result;\n};\n\nvar handleNCG = function (string) {\n var length = string.length;\n var index = 0;\n var result = '';\n var named = [];\n var names = create(null);\n var brackets = false;\n var ncg = false;\n var groupid = 0;\n var groupname = '';\n var chr;\n for (; index < length; index++) {\n chr = charAt(string, index);\n if (chr === '\\\\') {\n chr += charAt(string, ++index);\n // use `\\x5c` for escaped backslash to avoid corruption by `\\k` to `\\N` replacement below\n if (!ncg && charAt(chr, 1) === '\\\\') {\n result += '\\\\x5c';\n continue;\n }\n } else if (chr === ']') {\n brackets = false;\n } else if (!brackets) switch (true) {\n case chr === '[':\n brackets = true;\n break;\n case chr === '(':\n result += chr;\n if (exec(IS_NCG, stringSlice(string, index + 1))) {\n index += 2;\n ncg = true;\n groupid++;\n } else if (charAt(string, index + 1) !== '?') {\n groupid++;\n }\n continue;\n case chr === '>' && ncg:\n if (groupname === '' || hasOwn(names, groupname)) {\n throw new SyntaxError('Invalid capture group name');\n }\n names[groupname] = true;\n named[named.length] = [groupname, groupid];\n ncg = false;\n groupname = '';\n continue;\n }\n if (ncg) groupname += chr;\n else result += chr;\n }\n // convert `\\k` backreferences to numbered backreferences\n for (var ni = 0; ni < named.length; ni++) {\n var backref = '\\\\k<' + named[ni][0] + '>';\n var numRef = '\\\\' + named[ni][1];\n while (stringIndexOf(result, backref) > -1) {\n result = replace(result, backref, numRef);\n }\n } return [result, named];\n};\n\n// `RegExp` constructor\n// https://tc39.es/ecma262/#sec-regexp-constructor\nif (isForced('RegExp', BASE_FORCED)) {\n var RegExpWrapper = function RegExp(pattern, flags) {\n var thisIsRegExp = isPrototypeOf(RegExpPrototype, this);\n var patternIsRegExp = isRegExp(pattern);\n var flagsAreUndefined = flags === undefined;\n var groups = [];\n var rawPattern = pattern;\n var rawFlags, dotAll, sticky, handled, result, state;\n\n if (!thisIsRegExp && patternIsRegExp && flagsAreUndefined && pattern.constructor === RegExpWrapper) {\n return pattern;\n }\n\n if (patternIsRegExp || isPrototypeOf(RegExpPrototype, pattern)) {\n pattern = pattern.source;\n if (flagsAreUndefined) flags = getRegExpFlags(rawPattern);\n }\n\n pattern = pattern === undefined ? '' : toString(pattern);\n flags = flags === undefined ? '' : toString(flags);\n rawPattern = pattern;\n\n if (UNSUPPORTED_DOT_ALL && 'dotAll' in re1) {\n dotAll = !!flags && stringIndexOf(flags, 's') > -1;\n if (dotAll) flags = replace(flags, /s/g, '');\n }\n\n rawFlags = flags;\n\n if (MISSED_STICKY && 'sticky' in re1) {\n sticky = !!flags && stringIndexOf(flags, 'y') > -1;\n if (sticky && UNSUPPORTED_Y) flags = replace(flags, /y/g, '');\n }\n\n if (UNSUPPORTED_NCG) {\n handled = handleNCG(pattern);\n pattern = handled[0];\n groups = handled[1];\n }\n\n result = inheritIfRequired(NativeRegExp(pattern, flags), thisIsRegExp ? this : RegExpPrototype, RegExpWrapper);\n\n if (dotAll || sticky || groups.length) {\n state = enforceInternalState(result);\n if (dotAll) {\n state.dotAll = true;\n state.raw = RegExpWrapper(handleDotAll(pattern), rawFlags);\n }\n if (sticky) state.sticky = true;\n if (groups.length) state.groups = groups;\n }\n\n if (pattern !== rawPattern) try {\n // fails in old engines, but we have no alternatives for unsupported regex syntax\n createNonEnumerableProperty(result, 'source', rawPattern === '' ? '(?:)' : rawPattern);\n } catch (error) { /* empty */ }\n\n return result;\n };\n\n for (var keys = getOwnPropertyNames(NativeRegExp), index = 0; keys.length > index;) {\n proxyAccessor(RegExpWrapper, NativeRegExp, keys[index++]);\n }\n\n RegExpPrototype.constructor = RegExpWrapper;\n RegExpWrapper.prototype = RegExpPrototype;\n defineBuiltIn(globalThis, 'RegExp', RegExpWrapper, { constructor: true });\n}\n\n// https://tc39.es/ecma262/#sec-get-regexp-@@species\nsetSpecies('RegExp');\n", "'use strict';\nvar $TypeError = TypeError;\n\nmodule.exports = function (argument) {\n if (typeof argument == 'string') return argument;\n throw new $TypeError('Argument is not a string');\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar aString = require('../internals/a-string');\nvar hasOwn = require('../internals/has-own-property');\nvar padStart = require('../internals/string-pad').start;\nvar WHITESPACES = require('../internals/whitespaces');\n\nvar $Array = Array;\nvar $escape = RegExp.escape;\nvar charAt = uncurryThis(''.charAt);\nvar charCodeAt = uncurryThis(''.charCodeAt);\nvar numberToString = uncurryThis(1.1.toString);\nvar join = uncurryThis([].join);\nvar FIRST_DIGIT_OR_ASCII = /^[0-9a-z]/i;\nvar SYNTAX_SOLIDUS = /^[$()*+./?[\\\\\\]^{|}]/;\nvar OTHER_PUNCTUATORS_AND_WHITESPACES = RegExp('^[!\"#%&\\',\\\\-:;<=>@`~' + WHITESPACES + ']');\nvar exec = uncurryThis(FIRST_DIGIT_OR_ASCII.exec);\n\nvar ControlEscape = {\n '\\u0009': 't',\n '\\u000A': 'n',\n '\\u000B': 'v',\n '\\u000C': 'f',\n '\\u000D': 'r'\n};\n\nvar escapeChar = function (chr) {\n var hex = numberToString(charCodeAt(chr, 0), 16);\n return hex.length < 3 ? '\\\\x' + padStart(hex, 2, '0') : '\\\\u' + padStart(hex, 4, '0');\n};\n\n// Avoiding the use of polyfills of the previous iteration of this proposal\nvar FORCED = !$escape || $escape('ab') !== '\\\\x61b';\n\n// `RegExp.escape` method\n// https://tc39.es/ecma262/#sec-regexp.escape\n$({ target: 'RegExp', stat: true, forced: FORCED }, {\n escape: function escape(S) {\n aString(S);\n var length = S.length;\n var result = $Array(length);\n\n for (var i = 0; i < length; i++) {\n var chr = charAt(S, i);\n if (i === 0 && exec(FIRST_DIGIT_OR_ASCII, chr)) {\n result[i] = escapeChar(chr);\n } else if (hasOwn(ControlEscape, chr)) {\n result[i] = '\\\\' + ControlEscape[chr];\n } else if (exec(SYNTAX_SOLIDUS, chr)) {\n result[i] = '\\\\' + chr;\n } else if (exec(OTHER_PUNCTUATORS_AND_WHITESPACES, chr)) {\n result[i] = escapeChar(chr);\n } else {\n var charCode = charCodeAt(chr, 0);\n // single UTF-16 code unit\n if ((charCode & 0xF800) !== 0xD800) result[i] = chr;\n // unpaired surrogate\n else if (charCode >= 0xDC00 || i + 1 >= length || (charCodeAt(S, i + 1) & 0xFC00) !== 0xDC00) result[i] = escapeChar(chr);\n // surrogate pair\n else {\n result[i] = chr;\n result[++i] = charAt(S, i);\n }\n }\n }\n\n return join(result, '');\n }\n});\n", "'use strict';\nvar DESCRIPTORS = require('../internals/descriptors');\nvar UNSUPPORTED_DOT_ALL = require('../internals/regexp-unsupported-dot-all');\nvar classof = require('../internals/classof-raw');\nvar defineBuiltInAccessor = require('../internals/define-built-in-accessor');\nvar getInternalState = require('../internals/internal-state').get;\n\nvar RegExpPrototype = RegExp.prototype;\nvar $TypeError = TypeError;\n\n// `RegExp.prototype.dotAll` getter\n// https://tc39.es/ecma262/#sec-get-regexp.prototype.dotall\nif (DESCRIPTORS && UNSUPPORTED_DOT_ALL) {\n defineBuiltInAccessor(RegExpPrototype, 'dotAll', {\n configurable: true,\n get: function dotAll() {\n if (this === RegExpPrototype) return;\n // We can't use InternalStateModule.getterFor because\n // we don't add metadata for regexps created by a literal.\n if (classof(this) === 'RegExp') {\n return !!getInternalState(this).dotAll;\n }\n throw new $TypeError('Incompatible receiver, RegExp required');\n }\n });\n}\n", "'use strict';\n/* eslint-disable regexp/no-empty-capturing-group, regexp/no-empty-group, regexp/no-lazy-ends -- testing */\n/* eslint-disable regexp/no-useless-quantifier -- testing */\nvar call = require('../internals/function-call');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar toString = require('../internals/to-string');\nvar regexpFlags = require('../internals/regexp-flags');\nvar stickyHelpers = require('../internals/regexp-sticky-helpers');\nvar shared = require('../internals/shared');\nvar create = require('../internals/object-create');\nvar getInternalState = require('../internals/internal-state').get;\nvar UNSUPPORTED_DOT_ALL = require('../internals/regexp-unsupported-dot-all');\nvar UNSUPPORTED_NCG = require('../internals/regexp-unsupported-ncg');\n\nvar nativeReplace = shared('native-string-replace', String.prototype.replace);\nvar nativeExec = RegExp.prototype.exec;\nvar patchedExec = nativeExec;\nvar charAt = uncurryThis(''.charAt);\nvar indexOf = uncurryThis(''.indexOf);\nvar replace = uncurryThis(''.replace);\nvar stringSlice = uncurryThis(''.slice);\n\nvar UPDATES_LAST_INDEX_WRONG = (function () {\n var re1 = /a/;\n var re2 = /b*/g;\n call(nativeExec, re1, 'a');\n call(nativeExec, re2, 'a');\n return re1.lastIndex !== 0 || re2.lastIndex !== 0;\n})();\n\nvar UNSUPPORTED_Y = stickyHelpers.BROKEN_CARET;\n\n// nonparticipating capturing group, copied from es5-shim's String#split patch.\nvar NPCG_INCLUDED = /()??/.exec('')[1] !== undefined;\n\nvar PATCH = UPDATES_LAST_INDEX_WRONG || NPCG_INCLUDED || UNSUPPORTED_Y || UNSUPPORTED_DOT_ALL || UNSUPPORTED_NCG;\n\nvar setGroups = function (re, groups) {\n var object = re.groups = create(null);\n for (var i = 0; i < groups.length; i++) {\n var group = groups[i];\n object[group[0]] = re[group[1]];\n }\n};\n\nif (PATCH) {\n patchedExec = function exec(string) {\n var re = this;\n var state = getInternalState(re);\n var str = toString(string);\n var raw = state.raw;\n var result, reCopy, lastIndex;\n\n if (raw) {\n raw.lastIndex = re.lastIndex;\n result = call(patchedExec, raw, str);\n re.lastIndex = raw.lastIndex;\n\n if (result && state.groups) setGroups(result, state.groups);\n\n return result;\n }\n\n var groups = state.groups;\n var sticky = UNSUPPORTED_Y && re.sticky;\n var flags = call(regexpFlags, re);\n var source = re.source;\n var charsAdded = 0;\n var strCopy = str;\n\n if (sticky) {\n flags = replace(flags, 'y', '');\n if (indexOf(flags, 'g') === -1) {\n flags += 'g';\n }\n\n strCopy = stringSlice(str, re.lastIndex);\n // Support anchored sticky behavior.\n var prevChar = re.lastIndex > 0 && charAt(str, re.lastIndex - 1);\n if (re.lastIndex > 0 &&\n (!re.multiline || re.multiline && prevChar !== '\\n' && prevChar !== '\\r' && prevChar !== '\\u2028' && prevChar !== '\\u2029')) {\n source = '(?: (?:' + source + '))';\n strCopy = ' ' + strCopy;\n charsAdded++;\n }\n // ^(? + rx + ) is needed, in combination with some str slicing, to\n // simulate the 'y' flag.\n reCopy = new RegExp('^(?:' + source + ')', flags);\n }\n\n if (NPCG_INCLUDED) {\n reCopy = new RegExp('^' + source + '$(?!\\\\s)', flags);\n }\n if (UPDATES_LAST_INDEX_WRONG) lastIndex = re.lastIndex;\n\n var match = call(nativeExec, sticky ? reCopy : re, strCopy);\n\n if (sticky) {\n if (match) {\n match.input = str;\n match[0] = stringSlice(match[0], charsAdded);\n match.index = re.lastIndex;\n re.lastIndex += match[0].length;\n } else re.lastIndex = 0;\n } else if (UPDATES_LAST_INDEX_WRONG && match) {\n re.lastIndex = re.global ? match.index + match[0].length : lastIndex;\n }\n if (NPCG_INCLUDED && match && match.length > 1) {\n // Fix browsers whose `exec` methods don't consistently return `undefined`\n // for NPCG, like IE8. NOTE: This doesn't work for /(.?)?/\n call(nativeReplace, match[0], reCopy, function () {\n for (var i = 1; i < arguments.length - 2; i++) {\n if (arguments[i] === undefined) match[i] = undefined;\n }\n });\n }\n\n if (match && groups) setGroups(match, groups);\n\n return match;\n };\n}\n\nmodule.exports = patchedExec;\n", "'use strict';\nvar $ = require('../internals/export');\nvar exec = require('../internals/regexp-exec');\n\n// `RegExp.prototype.exec` method\n// https://tc39.es/ecma262/#sec-regexp.prototype.exec\n$({ target: 'RegExp', proto: true, forced: /./.exec !== exec }, {\n exec: exec\n});\n", "'use strict';\nvar DESCRIPTORS = require('../internals/descriptors');\nvar defineBuiltInAccessor = require('../internals/define-built-in-accessor');\nvar regExpFlagsDetection = require('../internals/regexp-flags-detection');\nvar regExpFlagsGetterImplementation = require('../internals/regexp-flags');\n\n// `RegExp.prototype.flags` getter\n// https://tc39.es/ecma262/#sec-get-regexp.prototype.flags\nif (DESCRIPTORS && !regExpFlagsDetection.correct) {\n defineBuiltInAccessor(RegExp.prototype, 'flags', {\n configurable: true,\n get: regExpFlagsGetterImplementation\n });\n\n regExpFlagsDetection.correct = true;\n}\n", "'use strict';\nvar DESCRIPTORS = require('../internals/descriptors');\nvar MISSED_STICKY = require('../internals/regexp-sticky-helpers').MISSED_STICKY;\nvar classof = require('../internals/classof-raw');\nvar defineBuiltInAccessor = require('../internals/define-built-in-accessor');\nvar getInternalState = require('../internals/internal-state').get;\n\nvar RegExpPrototype = RegExp.prototype;\nvar $TypeError = TypeError;\n\n// `RegExp.prototype.sticky` getter\n// https://tc39.es/ecma262/#sec-get-regexp.prototype.sticky\nif (DESCRIPTORS && MISSED_STICKY) {\n defineBuiltInAccessor(RegExpPrototype, 'sticky', {\n configurable: true,\n get: function sticky() {\n if (this === RegExpPrototype) return;\n // We can't use InternalStateModule.getterFor because\n // we don't add metadata for regexps created by a literal.\n if (classof(this) === 'RegExp') {\n return !!getInternalState(this).sticky;\n }\n throw new $TypeError('Incompatible receiver, RegExp required');\n }\n });\n}\n", "'use strict';\n// TODO: Remove from `core-js@4` since it's moved to entry points\nrequire('../modules/es.regexp.exec');\nvar $ = require('../internals/export');\nvar call = require('../internals/function-call');\nvar isCallable = require('../internals/is-callable');\nvar anObject = require('../internals/an-object');\nvar toString = require('../internals/to-string');\n\nvar DELEGATES_TO_EXEC = function () {\n var execCalled = false;\n var re = /[ac]/;\n re.exec = function () {\n execCalled = true;\n return /./.exec.apply(this, arguments);\n };\n return re.test('abc') === true && execCalled;\n}();\n\nvar nativeTest = /./.test;\n\n// `RegExp.prototype.test` method\n// https://tc39.es/ecma262/#sec-regexp.prototype.test\n$({ target: 'RegExp', proto: true, forced: !DELEGATES_TO_EXEC }, {\n test: function (S) {\n var R = anObject(this);\n var string = toString(S);\n var exec = R.exec;\n if (!isCallable(exec)) return call(nativeTest, R, string);\n var result = call(exec, R, string);\n if (result === null) return false;\n anObject(result);\n return true;\n }\n});\n", "'use strict';\nvar PROPER_FUNCTION_NAME = require('../internals/function-name').PROPER;\nvar defineBuiltIn = require('../internals/define-built-in');\nvar anObject = require('../internals/an-object');\nvar $toString = require('../internals/to-string');\nvar fails = require('../internals/fails');\nvar getRegExpFlags = require('../internals/regexp-get-flags');\n\nvar TO_STRING = 'toString';\nvar RegExpPrototype = RegExp.prototype;\nvar nativeToString = RegExpPrototype[TO_STRING];\n\nvar NOT_GENERIC = fails(function () { return nativeToString.call({ source: 'a', flags: 'b' }) !== '/a/b'; });\n// FF44- RegExp#toString has a wrong name\nvar INCORRECT_NAME = PROPER_FUNCTION_NAME && nativeToString.name !== TO_STRING;\n\n// `RegExp.prototype.toString` method\n// https://tc39.es/ecma262/#sec-regexp.prototype.tostring\nif (NOT_GENERIC || INCORRECT_NAME) {\n defineBuiltIn(RegExpPrototype, TO_STRING, function toString() {\n var R = anObject(this);\n var pattern = $toString(R.source);\n var flags = $toString(getRegExpFlags(R));\n return '/' + pattern + '/' + flags;\n }, { unsafe: true });\n}\n", "'use strict';\nvar collection = require('../internals/collection');\nvar collectionStrong = require('../internals/collection-strong');\n\n// `Set` constructor\n// https://tc39.es/ecma262/#sec-set-objects\ncollection('Set', function (init) {\n return function Set() { return init(this, arguments.length ? arguments[0] : undefined); };\n}, collectionStrong);\n", "'use strict';\n// TODO: Remove this module from `core-js@4` since it's replaced to module below\nrequire('../modules/es.set.constructor');\n", "'use strict';\nvar uncurryThis = require('../internals/function-uncurry-this');\n\n// eslint-disable-next-line es/no-set -- safe\nvar SetPrototype = Set.prototype;\n\nmodule.exports = {\n // eslint-disable-next-line es/no-set -- safe\n Set: Set,\n add: uncurryThis(SetPrototype.add),\n has: uncurryThis(SetPrototype.has),\n remove: uncurryThis(SetPrototype['delete']),\n proto: SetPrototype\n};\n", "'use strict';\nvar has = require('../internals/set-helpers').has;\n\n// Perform ? RequireInternalSlot(M, [[SetData]])\nmodule.exports = function (it) {\n has(it);\n return it;\n};\n", "'use strict';\nvar call = require('../internals/function-call');\n\nmodule.exports = function (record, fn, ITERATOR_INSTEAD_OF_RECORD) {\n var iterator = ITERATOR_INSTEAD_OF_RECORD ? record : record.iterator;\n var next = record.next;\n var step, result;\n while (!(step = call(next, iterator)).done) {\n result = fn(step.value);\n if (result !== undefined) return result;\n }\n};\n", "'use strict';\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar iterateSimple = require('../internals/iterate-simple');\nvar SetHelpers = require('../internals/set-helpers');\n\nvar Set = SetHelpers.Set;\nvar SetPrototype = SetHelpers.proto;\nvar forEach = uncurryThis(SetPrototype.forEach);\nvar keys = uncurryThis(SetPrototype.keys);\nvar next = keys(new Set()).next;\n\nmodule.exports = function (set, fn, interruptible) {\n return interruptible ? iterateSimple({ iterator: keys(set), next: next }, fn) : forEach(set, fn);\n};\n", "'use strict';\nvar SetHelpers = require('../internals/set-helpers');\nvar iterate = require('../internals/set-iterate');\n\nvar Set = SetHelpers.Set;\nvar add = SetHelpers.add;\n\nmodule.exports = function (set) {\n var result = new Set();\n iterate(set, function (it) {\n add(result, it);\n });\n return result;\n};\n", "'use strict';\nvar uncurryThisAccessor = require('../internals/function-uncurry-this-accessor');\nvar SetHelpers = require('../internals/set-helpers');\n\nmodule.exports = uncurryThisAccessor(SetHelpers.proto, 'size', 'get') || function (set) {\n return set.size;\n};\n", "'use strict';\nvar aCallable = require('../internals/a-callable');\nvar anObject = require('../internals/an-object');\nvar call = require('../internals/function-call');\nvar toIntegerOrInfinity = require('../internals/to-integer-or-infinity');\nvar getIteratorDirect = require('../internals/get-iterator-direct');\n\nvar INVALID_SIZE = 'Invalid size';\nvar $RangeError = RangeError;\nvar $TypeError = TypeError;\nvar max = Math.max;\n\nvar SetRecord = function (set, intSize) {\n this.set = set;\n this.size = max(intSize, 0);\n this.has = aCallable(set.has);\n this.keys = aCallable(set.keys);\n};\n\nSetRecord.prototype = {\n getIterator: function () {\n return getIteratorDirect(anObject(call(this.keys, this.set)));\n },\n includes: function (it) {\n return call(this.has, this.set, it);\n }\n};\n\n// `GetSetRecord` abstract operation\n// https://tc39.es/proposal-set-methods/#sec-getsetrecord\nmodule.exports = function (obj) {\n anObject(obj);\n var numSize = +obj.size;\n // NOTE: If size is undefined, then numSize will be NaN\n // eslint-disable-next-line no-self-compare -- NaN check\n if (numSize !== numSize) throw new $TypeError(INVALID_SIZE);\n var intSize = toIntegerOrInfinity(numSize);\n if (intSize < 0) throw new $RangeError(INVALID_SIZE);\n return new SetRecord(obj, intSize);\n};\n", "'use strict';\nvar aSet = require('../internals/a-set');\nvar SetHelpers = require('../internals/set-helpers');\nvar clone = require('../internals/set-clone');\nvar size = require('../internals/set-size');\nvar getSetRecord = require('../internals/get-set-record');\nvar iterateSet = require('../internals/set-iterate');\nvar iterateSimple = require('../internals/iterate-simple');\n\nvar has = SetHelpers.has;\nvar remove = SetHelpers.remove;\n\n// `Set.prototype.difference` method\n// https://tc39.es/ecma262/#sec-set.prototype.difference\nmodule.exports = function difference(other) {\n var O = aSet(this);\n var otherRec = getSetRecord(other);\n var result = clone(O);\n if (size(result) <= otherRec.size) iterateSet(result, function (e) {\n if (otherRec.includes(e)) remove(result, e);\n });\n else iterateSimple(otherRec.getIterator(), function (e) {\n if (has(result, e)) remove(result, e);\n });\n return result;\n};\n", "'use strict';\nvar getBuiltIn = require('../internals/get-built-in');\n\nvar createSetLike = function (size) {\n return {\n size: size,\n has: function () {\n return false;\n },\n keys: function () {\n return {\n next: function () {\n return { done: true };\n }\n };\n }\n };\n};\n\nvar createSetLikeWithInfinitySize = function (size) {\n return {\n size: size,\n has: function () {\n return true;\n },\n keys: function () {\n throw new Error('e');\n }\n };\n};\n\nmodule.exports = function (name, callback) {\n var Set = getBuiltIn('Set');\n try {\n new Set()[name](createSetLike(0));\n try {\n // late spec change, early WebKit ~ Safari 17 implementation does not pass it\n // https://github.com/tc39/proposal-set-methods/pull/88\n // also covered engines with\n // https://bugs.webkit.org/show_bug.cgi?id=272679\n new Set()[name](createSetLike(-1));\n return false;\n } catch (error2) {\n if (!callback) return true;\n // early V8 implementation bug\n // https://issues.chromium.org/issues/351332634\n try {\n new Set()[name](createSetLikeWithInfinitySize(-Infinity));\n return false;\n } catch (error) {\n var set = new Set([1, 2]);\n return callback(set[name](createSetLikeWithInfinitySize(Infinity)));\n }\n }\n } catch (error) {\n return false;\n }\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar difference = require('../internals/set-difference');\nvar fails = require('../internals/fails');\nvar setMethodAcceptSetLike = require('../internals/set-method-accept-set-like');\n\nvar SET_LIKE_INCORRECT_BEHAVIOR = !setMethodAcceptSetLike('difference', function (result) {\n return result.size === 0;\n});\n\nvar FORCED = SET_LIKE_INCORRECT_BEHAVIOR || fails(function () {\n // https://bugs.webkit.org/show_bug.cgi?id=288595\n var setLike = {\n size: 1,\n has: function () { return true; },\n keys: function () {\n var index = 0;\n return {\n next: function () {\n var done = index++ > 1;\n if (baseSet.has(1)) baseSet.clear();\n return { done: done, value: 2 };\n }\n };\n }\n };\n // eslint-disable-next-line es/no-set -- testing\n var baseSet = new Set([1, 2, 3, 4]);\n // eslint-disable-next-line es/no-set-prototype-difference -- testing\n return baseSet.difference(setLike).size !== 3;\n});\n\n// `Set.prototype.difference` method\n// https://tc39.es/ecma262/#sec-set.prototype.difference\n$({ target: 'Set', proto: true, real: true, forced: FORCED }, {\n difference: difference\n});\n", "'use strict';\nvar aSet = require('../internals/a-set');\nvar SetHelpers = require('../internals/set-helpers');\nvar size = require('../internals/set-size');\nvar getSetRecord = require('../internals/get-set-record');\nvar iterateSet = require('../internals/set-iterate');\nvar iterateSimple = require('../internals/iterate-simple');\n\nvar Set = SetHelpers.Set;\nvar add = SetHelpers.add;\nvar has = SetHelpers.has;\n\n// `Set.prototype.intersection` method\n// https://tc39.es/ecma262/#sec-set.prototype.intersection\nmodule.exports = function intersection(other) {\n var O = aSet(this);\n var otherRec = getSetRecord(other);\n var result = new Set();\n\n if (size(O) > otherRec.size) {\n iterateSimple(otherRec.getIterator(), function (e) {\n if (has(O, e)) add(result, e);\n });\n } else {\n iterateSet(O, function (e) {\n if (otherRec.includes(e)) add(result, e);\n });\n }\n\n return result;\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar fails = require('../internals/fails');\nvar intersection = require('../internals/set-intersection');\nvar setMethodAcceptSetLike = require('../internals/set-method-accept-set-like');\n\nvar INCORRECT = !setMethodAcceptSetLike('intersection', function (result) {\n return result.size === 2 && result.has(1) && result.has(2);\n}) || fails(function () {\n // eslint-disable-next-line es/no-array-from, es/no-set, es/no-set-prototype-intersection -- testing\n return String(Array.from(new Set([1, 2, 3]).intersection(new Set([3, 2])))) !== '3,2';\n});\n\n// `Set.prototype.intersection` method\n// https://tc39.es/ecma262/#sec-set.prototype.intersection\n$({ target: 'Set', proto: true, real: true, forced: INCORRECT }, {\n intersection: intersection\n});\n", "'use strict';\nvar aSet = require('../internals/a-set');\nvar has = require('../internals/set-helpers').has;\nvar size = require('../internals/set-size');\nvar getSetRecord = require('../internals/get-set-record');\nvar iterateSet = require('../internals/set-iterate');\nvar iterateSimple = require('../internals/iterate-simple');\nvar iteratorClose = require('../internals/iterator-close');\n\n// `Set.prototype.isDisjointFrom` method\n// https://tc39.es/ecma262/#sec-set.prototype.isdisjointfrom\nmodule.exports = function isDisjointFrom(other) {\n var O = aSet(this);\n var otherRec = getSetRecord(other);\n if (size(O) <= otherRec.size) return iterateSet(O, function (e) {\n if (otherRec.includes(e)) return false;\n }, true) !== false;\n var iterator = otherRec.getIterator();\n return iterateSimple(iterator, function (e) {\n if (has(O, e)) return iteratorClose(iterator.iterator, 'normal', false);\n }) !== false;\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar isDisjointFrom = require('../internals/set-is-disjoint-from');\nvar setMethodAcceptSetLike = require('../internals/set-method-accept-set-like');\n\nvar INCORRECT = !setMethodAcceptSetLike('isDisjointFrom', function (result) {\n return !result;\n});\n\n// `Set.prototype.isDisjointFrom` method\n// https://tc39.es/ecma262/#sec-set.prototype.isdisjointfrom\n$({ target: 'Set', proto: true, real: true, forced: INCORRECT }, {\n isDisjointFrom: isDisjointFrom\n});\n", "'use strict';\nvar aSet = require('../internals/a-set');\nvar size = require('../internals/set-size');\nvar iterate = require('../internals/set-iterate');\nvar getSetRecord = require('../internals/get-set-record');\n\n// `Set.prototype.isSubsetOf` method\n// https://tc39.es/ecma262/#sec-set.prototype.issubsetof\nmodule.exports = function isSubsetOf(other) {\n var O = aSet(this);\n var otherRec = getSetRecord(other);\n if (size(O) > otherRec.size) return false;\n return iterate(O, function (e) {\n if (!otherRec.includes(e)) return false;\n }, true) !== false;\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar isSubsetOf = require('../internals/set-is-subset-of');\nvar setMethodAcceptSetLike = require('../internals/set-method-accept-set-like');\n\nvar INCORRECT = !setMethodAcceptSetLike('isSubsetOf', function (result) {\n return result;\n});\n\n// `Set.prototype.isSubsetOf` method\n// https://tc39.es/ecma262/#sec-set.prototype.issubsetof\n$({ target: 'Set', proto: true, real: true, forced: INCORRECT }, {\n isSubsetOf: isSubsetOf\n});\n", "'use strict';\nvar aSet = require('../internals/a-set');\nvar has = require('../internals/set-helpers').has;\nvar size = require('../internals/set-size');\nvar getSetRecord = require('../internals/get-set-record');\nvar iterateSimple = require('../internals/iterate-simple');\nvar iteratorClose = require('../internals/iterator-close');\n\n// `Set.prototype.isSupersetOf` method\n// https://tc39.es/ecma262/#sec-set.prototype.issupersetof\nmodule.exports = function isSupersetOf(other) {\n var O = aSet(this);\n var otherRec = getSetRecord(other);\n if (size(O) < otherRec.size) return false;\n var iterator = otherRec.getIterator();\n return iterateSimple(iterator, function (e) {\n if (!has(O, e)) return iteratorClose(iterator.iterator, 'normal', false);\n }) !== false;\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar isSupersetOf = require('../internals/set-is-superset-of');\nvar setMethodAcceptSetLike = require('../internals/set-method-accept-set-like');\n\nvar INCORRECT = !setMethodAcceptSetLike('isSupersetOf', function (result) {\n return !result;\n});\n\n// `Set.prototype.isSupersetOf` method\n// https://tc39.es/ecma262/#sec-set.prototype.issupersetof\n$({ target: 'Set', proto: true, real: true, forced: INCORRECT }, {\n isSupersetOf: isSupersetOf\n});\n", "'use strict';\nvar aSet = require('../internals/a-set');\nvar SetHelpers = require('../internals/set-helpers');\nvar clone = require('../internals/set-clone');\nvar getSetRecord = require('../internals/get-set-record');\nvar iterateSimple = require('../internals/iterate-simple');\n\nvar add = SetHelpers.add;\nvar has = SetHelpers.has;\nvar remove = SetHelpers.remove;\n\n// `Set.prototype.symmetricDifference` method\n// https://tc39.es/ecma262/#sec-set.prototype.symmetricdifference\nmodule.exports = function symmetricDifference(other) {\n var O = aSet(this);\n var keysIter = getSetRecord(other).getIterator();\n var result = clone(O);\n iterateSimple(keysIter, function (e) {\n if (has(O, e)) remove(result, e);\n else add(result, e);\n });\n return result;\n};\n", "'use strict';\n// Should get iterator record of a set-like object before cloning this\n// https://bugs.webkit.org/show_bug.cgi?id=289430\nmodule.exports = function (METHOD_NAME) {\n try {\n // eslint-disable-next-line es/no-set -- needed for test\n var baseSet = new Set();\n var setLike = {\n size: 0,\n has: function () { return true; },\n keys: function () {\n // eslint-disable-next-line es/no-object-defineproperty -- needed for test\n return Object.defineProperty({}, 'next', {\n get: function () {\n baseSet.clear();\n baseSet.add(4);\n return function () {\n return { done: true };\n };\n }\n });\n }\n };\n var result = baseSet[METHOD_NAME](setLike);\n\n return result.size === 1 && result.values().next().value === 4;\n } catch (error) {\n return false;\n }\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar symmetricDifference = require('../internals/set-symmetric-difference');\nvar setMethodGetKeysBeforeCloning = require('../internals/set-method-get-keys-before-cloning-detection');\nvar setMethodAcceptSetLike = require('../internals/set-method-accept-set-like');\n\nvar FORCED = !setMethodAcceptSetLike('symmetricDifference') || !setMethodGetKeysBeforeCloning('symmetricDifference');\n\n// `Set.prototype.symmetricDifference` method\n// https://tc39.es/ecma262/#sec-set.prototype.symmetricdifference\n$({ target: 'Set', proto: true, real: true, forced: FORCED }, {\n symmetricDifference: symmetricDifference\n});\n", "'use strict';\nvar aSet = require('../internals/a-set');\nvar add = require('../internals/set-helpers').add;\nvar clone = require('../internals/set-clone');\nvar getSetRecord = require('../internals/get-set-record');\nvar iterateSimple = require('../internals/iterate-simple');\n\n// `Set.prototype.union` method\n// https://tc39.es/ecma262/#sec-set.prototype.union\nmodule.exports = function union(other) {\n var O = aSet(this);\n var keysIter = getSetRecord(other).getIterator();\n var result = clone(O);\n iterateSimple(keysIter, function (it) {\n add(result, it);\n });\n return result;\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar union = require('../internals/set-union');\nvar setMethodGetKeysBeforeCloning = require('../internals/set-method-get-keys-before-cloning-detection');\nvar setMethodAcceptSetLike = require('../internals/set-method-accept-set-like');\n\nvar FORCED = !setMethodAcceptSetLike('union') || !setMethodGetKeysBeforeCloning('union');\n\n// `Set.prototype.union` method\n// https://tc39.es/ecma262/#sec-set.prototype.union\n$({ target: 'Set', proto: true, real: true, forced: FORCED }, {\n union: union\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar requireObjectCoercible = require('../internals/require-object-coercible');\nvar toIntegerOrInfinity = require('../internals/to-integer-or-infinity');\nvar toString = require('../internals/to-string');\nvar fails = require('../internals/fails');\n\nvar charAt = uncurryThis(''.charAt);\n\nvar FORCED = fails(function () {\n // eslint-disable-next-line es/no-string-prototype-at -- safe\n return '\uD842\uDFB7'.at(-2) !== '\\uD842';\n});\n\n// `String.prototype.at` method\n// https://tc39.es/ecma262/#sec-string.prototype.at\n$({ target: 'String', proto: true, forced: FORCED }, {\n at: function at(index) {\n var S = toString(requireObjectCoercible(this));\n var len = S.length;\n var relativeIndex = toIntegerOrInfinity(index);\n var k = relativeIndex >= 0 ? relativeIndex : len + relativeIndex;\n return (k < 0 || k >= len) ? undefined : charAt(S, k);\n }\n});\n", "'use strict';\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar toIntegerOrInfinity = require('../internals/to-integer-or-infinity');\nvar toString = require('../internals/to-string');\nvar requireObjectCoercible = require('../internals/require-object-coercible');\n\nvar charAt = uncurryThis(''.charAt);\nvar charCodeAt = uncurryThis(''.charCodeAt);\nvar stringSlice = uncurryThis(''.slice);\n\nvar createMethod = function (CONVERT_TO_STRING) {\n return function ($this, pos) {\n var S = toString(requireObjectCoercible($this));\n var position = toIntegerOrInfinity(pos);\n var size = S.length;\n var first, second;\n if (position < 0 || position >= size) return CONVERT_TO_STRING ? '' : undefined;\n first = charCodeAt(S, position);\n return first < 0xD800 || first > 0xDBFF || position + 1 === size\n || (second = charCodeAt(S, position + 1)) < 0xDC00 || second > 0xDFFF\n ? CONVERT_TO_STRING\n ? charAt(S, position)\n : first\n : CONVERT_TO_STRING\n ? stringSlice(S, position, position + 2)\n : (first - 0xD800 << 10) + (second - 0xDC00) + 0x10000;\n };\n};\n\nmodule.exports = {\n // `String.prototype.codePointAt` method\n // https://tc39.es/ecma262/#sec-string.prototype.codepointat\n codeAt: createMethod(false),\n // `String.prototype.at` method\n // https://github.com/mathiasbynens/String.prototype.at\n charAt: createMethod(true)\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar codeAt = require('../internals/string-multibyte').codeAt;\n\n// `String.prototype.codePointAt` method\n// https://tc39.es/ecma262/#sec-string.prototype.codepointat\n$({ target: 'String', proto: true }, {\n codePointAt: function codePointAt(pos) {\n return codeAt(this, pos);\n }\n});\n", "'use strict';\nvar isRegExp = require('../internals/is-regexp');\n\nvar $TypeError = TypeError;\n\nmodule.exports = function (it) {\n if (isRegExp(it)) {\n throw new $TypeError(\"The method doesn't accept regular expressions\");\n } return it;\n};\n", "'use strict';\nvar wellKnownSymbol = require('../internals/well-known-symbol');\n\nvar MATCH = wellKnownSymbol('match');\n\nmodule.exports = function (METHOD_NAME) {\n var regexp = /./;\n try {\n '/./'[METHOD_NAME](regexp);\n } catch (error1) {\n try {\n regexp[MATCH] = false;\n return '/./'[METHOD_NAME](regexp);\n } catch (error2) { /* empty */ }\n } return false;\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar uncurryThis = require('../internals/function-uncurry-this-clause');\nvar getOwnPropertyDescriptor = require('../internals/object-get-own-property-descriptor').f;\nvar toLength = require('../internals/to-length');\nvar toString = require('../internals/to-string');\nvar notARegExp = require('../internals/not-a-regexp');\nvar requireObjectCoercible = require('../internals/require-object-coercible');\nvar correctIsRegExpLogic = require('../internals/correct-is-regexp-logic');\nvar IS_PURE = require('../internals/is-pure');\n\nvar slice = uncurryThis(''.slice);\nvar min = Math.min;\n\nvar CORRECT_IS_REGEXP_LOGIC = correctIsRegExpLogic('endsWith');\n// https://github.com/zloirock/core-js/pull/702\nvar MDN_POLYFILL_BUG = !IS_PURE && !CORRECT_IS_REGEXP_LOGIC && !!function () {\n var descriptor = getOwnPropertyDescriptor(String.prototype, 'endsWith');\n return descriptor && !descriptor.writable;\n}();\n\n// `String.prototype.endsWith` method\n// https://tc39.es/ecma262/#sec-string.prototype.endswith\n$({ target: 'String', proto: true, forced: !MDN_POLYFILL_BUG && !CORRECT_IS_REGEXP_LOGIC }, {\n endsWith: function endsWith(searchString /* , endPosition = @length */) {\n var that = toString(requireObjectCoercible(this));\n notARegExp(searchString);\n var search = toString(searchString);\n var endPosition = arguments.length > 1 ? arguments[1] : undefined;\n var len = that.length;\n var end = endPosition === undefined ? len : min(toLength(endPosition), len);\n return slice(that, end - search.length, end) === search;\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar toAbsoluteIndex = require('../internals/to-absolute-index');\n\nvar $RangeError = RangeError;\nvar fromCharCode = String.fromCharCode;\n// eslint-disable-next-line es/no-string-fromcodepoint -- required for testing\nvar $fromCodePoint = String.fromCodePoint;\nvar join = uncurryThis([].join);\n\n// length should be 1, old FF problem\nvar INCORRECT_LENGTH = !!$fromCodePoint && $fromCodePoint.length !== 1;\n\n// `String.fromCodePoint` method\n// https://tc39.es/ecma262/#sec-string.fromcodepoint\n$({ target: 'String', stat: true, arity: 1, forced: INCORRECT_LENGTH }, {\n // eslint-disable-next-line no-unused-vars -- required for `.length`\n fromCodePoint: function fromCodePoint(x) {\n var elements = [];\n var length = arguments.length;\n var i = 0;\n var code;\n while (length > i) {\n code = +arguments[i];\n if (toAbsoluteIndex(code, 0x10FFFF) !== code) throw new $RangeError(code + ' is not a valid code point');\n elements[i++] = code < 0x10000\n ? fromCharCode(code)\n : fromCharCode(((code -= 0x10000) >> 10) + 0xD800, code % 0x400 + 0xDC00);\n } return join(elements, '');\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar notARegExp = require('../internals/not-a-regexp');\nvar requireObjectCoercible = require('../internals/require-object-coercible');\nvar toString = require('../internals/to-string');\nvar correctIsRegExpLogic = require('../internals/correct-is-regexp-logic');\n\nvar stringIndexOf = uncurryThis(''.indexOf);\n\n// `String.prototype.includes` method\n// https://tc39.es/ecma262/#sec-string.prototype.includes\n$({ target: 'String', proto: true, forced: !correctIsRegExpLogic('includes') }, {\n includes: function includes(searchString /* , position = 0 */) {\n return !!~stringIndexOf(\n toString(requireObjectCoercible(this)),\n toString(notARegExp(searchString)),\n arguments.length > 1 ? arguments[1] : undefined\n );\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar requireObjectCoercible = require('../internals/require-object-coercible');\nvar toString = require('../internals/to-string');\n\nvar charCodeAt = uncurryThis(''.charCodeAt);\n\n// `String.prototype.isWellFormed` method\n// https://tc39.es/ecma262/#sec-string.prototype.iswellformed\n$({ target: 'String', proto: true }, {\n isWellFormed: function isWellFormed() {\n var S = toString(requireObjectCoercible(this));\n var length = S.length;\n for (var i = 0; i < length; i++) {\n var charCode = charCodeAt(S, i);\n // single UTF-16 code unit\n if ((charCode & 0xF800) !== 0xD800) continue;\n // unpaired surrogate\n if (charCode >= 0xDC00 || ++i >= length || (charCodeAt(S, i) & 0xFC00) !== 0xDC00) return false;\n } return true;\n }\n});\n", "'use strict';\nvar charAt = require('../internals/string-multibyte').charAt;\nvar toString = require('../internals/to-string');\nvar InternalStateModule = require('../internals/internal-state');\nvar defineIterator = require('../internals/iterator-define');\nvar createIterResultObject = require('../internals/create-iter-result-object');\n\nvar STRING_ITERATOR = 'String Iterator';\nvar setInternalState = InternalStateModule.set;\nvar getInternalState = InternalStateModule.getterFor(STRING_ITERATOR);\n\n// `String.prototype[@@iterator]` method\n// https://tc39.es/ecma262/#sec-string.prototype-@@iterator\ndefineIterator(String, 'String', function (iterated) {\n setInternalState(this, {\n type: STRING_ITERATOR,\n string: toString(iterated),\n index: 0\n });\n// `%StringIteratorPrototype%.next` method\n// https://tc39.es/ecma262/#sec-%stringiteratorprototype%.next\n}, function next() {\n var state = getInternalState(this);\n var string = state.string;\n var index = state.index;\n var point;\n if (index >= string.length) return createIterResultObject(undefined, true);\n point = charAt(string, index);\n state.index += point.length;\n return createIterResultObject(point, false);\n});\n", "'use strict';\n// TODO: Remove from `core-js@4` since it's moved to entry points\nrequire('../modules/es.regexp.exec');\nvar call = require('../internals/function-call');\nvar defineBuiltIn = require('../internals/define-built-in');\nvar regexpExec = require('../internals/regexp-exec');\nvar fails = require('../internals/fails');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\nvar createNonEnumerableProperty = require('../internals/create-non-enumerable-property');\n\nvar SPECIES = wellKnownSymbol('species');\nvar RegExpPrototype = RegExp.prototype;\n\nmodule.exports = function (KEY, exec, FORCED, SHAM) {\n var SYMBOL = wellKnownSymbol(KEY);\n\n var DELEGATES_TO_SYMBOL = !fails(function () {\n // String methods call symbol-named RegExp methods\n var O = {};\n // eslint-disable-next-line unicorn/no-immediate-mutation -- ES3 syntax limitation\n O[SYMBOL] = function () { return 7; };\n return ''[KEY](O) !== 7;\n });\n\n var DELEGATES_TO_EXEC = DELEGATES_TO_SYMBOL && !fails(function () {\n // Symbol-named RegExp methods call .exec\n var execCalled = false;\n var re = /a/;\n\n if (KEY === 'split') {\n // We can't use real regex here since it causes deoptimization\n // and serious performance degradation in V8\n // https://github.com/zloirock/core-js/issues/306\n // RegExp[@@split] doesn't call the regex's exec method, but first creates\n // a new one. We need to return the patched regex when creating the new one.\n var constructor = {};\n // eslint-disable-next-line unicorn/no-immediate-mutation -- ES3 syntax limitation\n constructor[SPECIES] = function () { return re; };\n re = { constructor: constructor, flags: '' };\n // eslint-disable-next-line unicorn/no-immediate-mutation -- ES3 syntax limitation\n re[SYMBOL] = /./[SYMBOL];\n }\n\n re.exec = function () {\n execCalled = true;\n return null;\n };\n\n re[SYMBOL]('');\n return !execCalled;\n });\n\n if (\n !DELEGATES_TO_SYMBOL ||\n !DELEGATES_TO_EXEC ||\n FORCED\n ) {\n var nativeRegExpMethod = /./[SYMBOL];\n var methods = exec(SYMBOL, ''[KEY], function (nativeMethod, regexp, str, arg2, forceStringMethod) {\n var $exec = regexp.exec;\n if ($exec === regexpExec || $exec === RegExpPrototype.exec) {\n if (DELEGATES_TO_SYMBOL && !forceStringMethod) {\n // The native String method already delegates to @@method (this\n // polyfilled function), leasing to infinite recursion.\n // We avoid it by directly calling the native @@method method.\n return { done: true, value: call(nativeRegExpMethod, regexp, str, arg2) };\n }\n return { done: true, value: call(nativeMethod, str, regexp, arg2) };\n }\n return { done: false };\n });\n\n defineBuiltIn(String.prototype, KEY, methods[0]);\n defineBuiltIn(RegExpPrototype, SYMBOL, methods[1]);\n }\n\n if (SHAM) createNonEnumerableProperty(RegExpPrototype[SYMBOL], 'sham', true);\n};\n", "'use strict';\nvar charAt = require('../internals/string-multibyte').charAt;\n\n// `AdvanceStringIndex` abstract operation\n// https://tc39.es/ecma262/#sec-advancestringindex\nmodule.exports = function (S, index, unicode) {\n return index + (unicode ? charAt(S, index).length || 1 : 1);\n};\n", "'use strict';\nvar call = require('../internals/function-call');\nvar anObject = require('../internals/an-object');\nvar isCallable = require('../internals/is-callable');\nvar classof = require('../internals/classof-raw');\nvar regexpExec = require('../internals/regexp-exec');\n\nvar $TypeError = TypeError;\n\n// `RegExpExec` abstract operation\n// https://tc39.es/ecma262/#sec-regexpexec\nmodule.exports = function (R, S) {\n var exec = R.exec;\n if (isCallable(exec)) {\n var result = call(exec, R, S);\n if (result !== null) anObject(result);\n return result;\n }\n if (classof(R) === 'RegExp') return call(regexpExec, R, S);\n throw new $TypeError('RegExp#exec called on incompatible receiver');\n};\n", "'use strict';\nvar call = require('../internals/function-call');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar fixRegExpWellKnownSymbolLogic = require('../internals/fix-regexp-well-known-symbol-logic');\nvar anObject = require('../internals/an-object');\nvar isObject = require('../internals/is-object');\nvar toLength = require('../internals/to-length');\nvar toString = require('../internals/to-string');\nvar requireObjectCoercible = require('../internals/require-object-coercible');\nvar getMethod = require('../internals/get-method');\nvar advanceStringIndex = require('../internals/advance-string-index');\nvar getRegExpFlags = require('../internals/regexp-get-flags');\nvar regExpExec = require('../internals/regexp-exec-abstract');\n\nvar stringIndexOf = uncurryThis(''.indexOf);\n\n// @@match logic\nfixRegExpWellKnownSymbolLogic('match', function (MATCH, nativeMatch, maybeCallNative) {\n return [\n // `String.prototype.match` method\n // https://tc39.es/ecma262/#sec-string.prototype.match\n function match(regexp) {\n var O = requireObjectCoercible(this);\n var matcher = isObject(regexp) ? getMethod(regexp, MATCH) : undefined;\n return matcher ? call(matcher, regexp, O) : new RegExp(regexp)[MATCH](toString(O));\n },\n // `RegExp.prototype[@@match]` method\n // https://tc39.es/ecma262/#sec-regexp.prototype-@@match\n function (string) {\n var rx = anObject(this);\n var S = toString(string);\n var res = maybeCallNative(nativeMatch, rx, S);\n\n if (res.done) return res.value;\n\n var flags = toString(getRegExpFlags(rx));\n\n if (!~stringIndexOf(flags, 'g')) return regExpExec(rx, S);\n\n var fullUnicode = !!~stringIndexOf(flags, 'u') || !!~stringIndexOf(flags, 'v');\n rx.lastIndex = 0;\n var A = [];\n var n = 0;\n var result;\n while ((result = regExpExec(rx, S)) !== null) {\n var matchStr = toString(result[0]);\n A[n] = matchStr;\n if (matchStr === '') rx.lastIndex = advanceStringIndex(S, toLength(rx.lastIndex), fullUnicode);\n n++;\n }\n return n === 0 ? null : A;\n }\n ];\n});\n", "'use strict';\n/* eslint-disable es/no-string-prototype-matchall -- safe */\nvar $ = require('../internals/export');\nvar call = require('../internals/function-call');\nvar uncurryThis = require('../internals/function-uncurry-this-clause');\nvar createIteratorConstructor = require('../internals/iterator-create-constructor');\nvar createIterResultObject = require('../internals/create-iter-result-object');\nvar requireObjectCoercible = require('../internals/require-object-coercible');\nvar toLength = require('../internals/to-length');\nvar toString = require('../internals/to-string');\nvar anObject = require('../internals/an-object');\nvar isObject = require('../internals/is-object');\nvar classof = require('../internals/classof-raw');\nvar isRegExp = require('../internals/is-regexp');\nvar getRegExpFlags = require('../internals/regexp-get-flags');\nvar getMethod = require('../internals/get-method');\nvar defineBuiltIn = require('../internals/define-built-in');\nvar fails = require('../internals/fails');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\nvar speciesConstructor = require('../internals/species-constructor');\nvar advanceStringIndex = require('../internals/advance-string-index');\nvar regExpExec = require('../internals/regexp-exec-abstract');\nvar InternalStateModule = require('../internals/internal-state');\nvar IS_PURE = require('../internals/is-pure');\n\nvar MATCH_ALL = wellKnownSymbol('matchAll');\nvar REGEXP_STRING = 'RegExp String';\nvar REGEXP_STRING_ITERATOR = REGEXP_STRING + ' Iterator';\nvar setInternalState = InternalStateModule.set;\nvar getInternalState = InternalStateModule.getterFor(REGEXP_STRING_ITERATOR);\nvar RegExpPrototype = RegExp.prototype;\nvar $TypeError = TypeError;\nvar stringIndexOf = uncurryThis(''.indexOf);\nvar nativeMatchAll = uncurryThis(''.matchAll);\n\nvar WORKS_WITH_NON_GLOBAL_REGEX = !!nativeMatchAll && !fails(function () {\n nativeMatchAll('a', /./);\n});\n\nvar $RegExpStringIterator = createIteratorConstructor(function RegExpStringIterator(regexp, string, $global, fullUnicode) {\n setInternalState(this, {\n type: REGEXP_STRING_ITERATOR,\n regexp: regexp,\n string: string,\n global: $global,\n unicode: fullUnicode,\n done: false\n });\n}, REGEXP_STRING, function next() {\n var state = getInternalState(this);\n if (state.done) return createIterResultObject(undefined, true);\n var R = state.regexp;\n var S = state.string;\n var match = regExpExec(R, S);\n if (match === null) {\n state.done = true;\n return createIterResultObject(undefined, true);\n }\n if (state.global) {\n if (toString(match[0]) === '') R.lastIndex = advanceStringIndex(S, toLength(R.lastIndex), state.unicode);\n return createIterResultObject(match, false);\n }\n state.done = true;\n return createIterResultObject(match, false);\n});\n\nvar $matchAll = function (string) {\n var R = anObject(this);\n var S = toString(string);\n var C = speciesConstructor(R, RegExp);\n var flags = toString(getRegExpFlags(R));\n var matcher, $global, fullUnicode;\n matcher = new C(C === RegExp ? R.source : R, flags);\n $global = !!~stringIndexOf(flags, 'g');\n fullUnicode = !!~stringIndexOf(flags, 'u') || !!~stringIndexOf(flags, 'v');\n matcher.lastIndex = toLength(R.lastIndex);\n return new $RegExpStringIterator(matcher, S, $global, fullUnicode);\n};\n\n// `String.prototype.matchAll` method\n// https://tc39.es/ecma262/#sec-string.prototype.matchall\n$({ target: 'String', proto: true, forced: WORKS_WITH_NON_GLOBAL_REGEX }, {\n matchAll: function matchAll(regexp) {\n var O = requireObjectCoercible(this);\n var flags, S, matcher, rx;\n if (isObject(regexp)) {\n if (isRegExp(regexp)) {\n flags = toString(requireObjectCoercible(getRegExpFlags(regexp)));\n if (!~stringIndexOf(flags, 'g')) throw new $TypeError('`.matchAll` does not allow non-global regexes');\n }\n if (WORKS_WITH_NON_GLOBAL_REGEX) return nativeMatchAll(O, regexp);\n matcher = getMethod(regexp, MATCH_ALL);\n if (matcher === undefined && IS_PURE && classof(regexp) === 'RegExp') matcher = $matchAll;\n if (matcher) return call(matcher, regexp, O);\n } else if (WORKS_WITH_NON_GLOBAL_REGEX) return nativeMatchAll(O, regexp);\n S = toString(O);\n rx = new RegExp(regexp, 'g');\n return IS_PURE ? call($matchAll, rx, S) : rx[MATCH_ALL](S);\n }\n});\n\nIS_PURE || MATCH_ALL in RegExpPrototype || defineBuiltIn(RegExpPrototype, MATCH_ALL, $matchAll);\n", "'use strict';\n// https://github.com/zloirock/core-js/issues/280\nvar userAgent = require('../internals/environment-user-agent');\n\nmodule.exports = /Version\\/10(?:\\.\\d+){1,2}(?: [\\w./]+)?(?: Mobile\\/\\w+)? Safari\\//.test(userAgent);\n", "'use strict';\nvar $ = require('../internals/export');\nvar $padEnd = require('../internals/string-pad').end;\nvar WEBKIT_BUG = require('../internals/string-pad-webkit-bug');\n\n// `String.prototype.padEnd` method\n// https://tc39.es/ecma262/#sec-string.prototype.padend\n$({ target: 'String', proto: true, forced: WEBKIT_BUG }, {\n padEnd: function padEnd(maxLength /* , fillString = ' ' */) {\n return $padEnd(this, maxLength, arguments.length > 1 ? arguments[1] : undefined);\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar $padStart = require('../internals/string-pad').start;\nvar WEBKIT_BUG = require('../internals/string-pad-webkit-bug');\n\n// `String.prototype.padStart` method\n// https://tc39.es/ecma262/#sec-string.prototype.padstart\n$({ target: 'String', proto: true, forced: WEBKIT_BUG }, {\n padStart: function padStart(maxLength /* , fillString = ' ' */) {\n return $padStart(this, maxLength, arguments.length > 1 ? arguments[1] : undefined);\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar toIndexedObject = require('../internals/to-indexed-object');\nvar toObject = require('../internals/to-object');\nvar toString = require('../internals/to-string');\nvar lengthOfArrayLike = require('../internals/length-of-array-like');\n\nvar push = uncurryThis([].push);\nvar join = uncurryThis([].join);\n\n// `String.raw` method\n// https://tc39.es/ecma262/#sec-string.raw\n$({ target: 'String', stat: true }, {\n raw: function raw(template) {\n var rawTemplate = toIndexedObject(toObject(template).raw);\n var literalSegments = lengthOfArrayLike(rawTemplate);\n if (!literalSegments) return '';\n var argumentsLength = arguments.length;\n var elements = [];\n var i = 0;\n while (true) {\n push(elements, toString(rawTemplate[i++]));\n if (i === literalSegments) return join(elements, '');\n if (i < argumentsLength) push(elements, toString(arguments[i]));\n }\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar repeat = require('../internals/string-repeat');\n\n// `String.prototype.repeat` method\n// https://tc39.es/ecma262/#sec-string.prototype.repeat\n$({ target: 'String', proto: true }, {\n repeat: repeat\n});\n", "'use strict';\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar toObject = require('../internals/to-object');\n\nvar floor = Math.floor;\nvar charAt = uncurryThis(''.charAt);\nvar replace = uncurryThis(''.replace);\nvar stringSlice = uncurryThis(''.slice);\n// eslint-disable-next-line redos/no-vulnerable -- safe\nvar SUBSTITUTION_SYMBOLS = /\\$([$&'`]|\\d{1,2}|<[^>]*>)/g;\nvar SUBSTITUTION_SYMBOLS_NO_NAMED = /\\$([$&'`]|\\d{1,2})/g;\n\n// `GetSubstitution` abstract operation\n// https://tc39.es/ecma262/#sec-getsubstitution\nmodule.exports = function (matched, str, position, captures, namedCaptures, replacement) {\n var tailPos = position + matched.length;\n var m = captures.length;\n var symbols = SUBSTITUTION_SYMBOLS_NO_NAMED;\n if (namedCaptures !== undefined) {\n namedCaptures = toObject(namedCaptures);\n symbols = SUBSTITUTION_SYMBOLS;\n }\n return replace(replacement, symbols, function (match, ch) {\n var capture;\n switch (charAt(ch, 0)) {\n case '$': return '$';\n case '&': return matched;\n case '`': return stringSlice(str, 0, position);\n case \"'\": return stringSlice(str, tailPos);\n case '<':\n capture = namedCaptures[stringSlice(ch, 1, -1)];\n break;\n default: // \\d\\d?\n var n = +ch;\n if (n === 0) return match;\n if (n > m) {\n var f = floor(n / 10);\n if (f === 0) return match;\n if (f <= m) return captures[f - 1] === undefined ? charAt(ch, 1) : captures[f - 1] + charAt(ch, 1);\n return match;\n }\n capture = captures[n - 1];\n }\n return capture === undefined ? '' : capture;\n });\n};\n", "'use strict';\nvar apply = require('../internals/function-apply');\nvar call = require('../internals/function-call');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar fixRegExpWellKnownSymbolLogic = require('../internals/fix-regexp-well-known-symbol-logic');\nvar fails = require('../internals/fails');\nvar anObject = require('../internals/an-object');\nvar isCallable = require('../internals/is-callable');\nvar isObject = require('../internals/is-object');\nvar toIntegerOrInfinity = require('../internals/to-integer-or-infinity');\nvar toLength = require('../internals/to-length');\nvar toString = require('../internals/to-string');\nvar requireObjectCoercible = require('../internals/require-object-coercible');\nvar advanceStringIndex = require('../internals/advance-string-index');\nvar getMethod = require('../internals/get-method');\nvar getSubstitution = require('../internals/get-substitution');\nvar getRegExpFlags = require('../internals/regexp-get-flags');\nvar regExpExec = require('../internals/regexp-exec-abstract');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\n\nvar REPLACE = wellKnownSymbol('replace');\nvar max = Math.max;\nvar min = Math.min;\nvar concat = uncurryThis([].concat);\nvar push = uncurryThis([].push);\nvar stringIndexOf = uncurryThis(''.indexOf);\nvar stringSlice = uncurryThis(''.slice);\n\nvar maybeToString = function (it) {\n return it === undefined ? it : String(it);\n};\n\n// IE <= 11 replaces $0 with the whole match, as if it was $&\n// https://stackoverflow.com/questions/6024666/getting-ie-to-replace-a-regex-with-the-literal-string-0\nvar REPLACE_KEEPS_$0 = (function () {\n // eslint-disable-next-line regexp/prefer-escape-replacement-dollar-char -- required for testing\n return 'a'.replace(/./, '$0') === '$0';\n})();\n\n// Safari <= 13.0.3(?) substitutes nth capture where n>m with an empty string\nvar REGEXP_REPLACE_SUBSTITUTES_UNDEFINED_CAPTURE = (function () {\n if (/./[REPLACE]) {\n return /./[REPLACE]('a', '$0') === '';\n }\n return false;\n})();\n\nvar REPLACE_SUPPORTS_NAMED_GROUPS = !fails(function () {\n var re = /./;\n re.exec = function () {\n var result = [];\n result.groups = { a: '7' };\n return result;\n };\n // eslint-disable-next-line regexp/no-useless-dollar-replacements -- false positive\n return ''.replace(re, '$') !== '7';\n});\n\n// @@replace logic\nfixRegExpWellKnownSymbolLogic('replace', function (_, nativeReplace, maybeCallNative) {\n var UNSAFE_SUBSTITUTE = REGEXP_REPLACE_SUBSTITUTES_UNDEFINED_CAPTURE ? '$' : '$0';\n\n return [\n // `String.prototype.replace` method\n // https://tc39.es/ecma262/#sec-string.prototype.replace\n function replace(searchValue, replaceValue) {\n var O = requireObjectCoercible(this);\n var replacer = isObject(searchValue) ? getMethod(searchValue, REPLACE) : undefined;\n return replacer\n ? call(replacer, searchValue, O, replaceValue)\n : call(nativeReplace, toString(O), searchValue, replaceValue);\n },\n // `RegExp.prototype[@@replace]` method\n // https://tc39.es/ecma262/#sec-regexp.prototype-@@replace\n function (string, replaceValue) {\n var rx = anObject(this);\n var S = toString(string);\n\n var functionalReplace = isCallable(replaceValue);\n if (!functionalReplace) replaceValue = toString(replaceValue);\n var flags = toString(getRegExpFlags(rx));\n\n if (\n typeof replaceValue == 'string' &&\n !~stringIndexOf(replaceValue, UNSAFE_SUBSTITUTE) &&\n !~stringIndexOf(replaceValue, '$<') &&\n !~stringIndexOf(flags, 'y')\n ) {\n var res = maybeCallNative(nativeReplace, rx, S, replaceValue);\n if (res.done) return res.value;\n }\n\n var global = !!~stringIndexOf(flags, 'g');\n var fullUnicode;\n if (global) {\n fullUnicode = !!~stringIndexOf(flags, 'u') || !!~stringIndexOf(flags, 'v');\n rx.lastIndex = 0;\n }\n\n var results = [];\n var result;\n while (true) {\n result = regExpExec(rx, S);\n if (result === null) break;\n\n push(results, result);\n if (!global) break;\n\n var matchStr = toString(result[0]);\n if (matchStr === '') rx.lastIndex = advanceStringIndex(S, toLength(rx.lastIndex), fullUnicode);\n }\n\n var accumulatedResult = '';\n var nextSourcePosition = 0;\n for (var i = 0; i < results.length; i++) {\n result = results[i];\n\n var matched = toString(result[0]);\n var position = max(min(toIntegerOrInfinity(result.index), S.length), 0);\n var captures = [];\n var replacement;\n // NOTE: This is equivalent to\n // captures = result.slice(1).map(maybeToString)\n // but for some reason `nativeSlice.call(result, 1, result.length)` (called in\n // the slice polyfill when slicing native arrays) \"doesn't work\" in safari 9 and\n // causes a crash (https://pastebin.com/N21QzeQA) when trying to debug it.\n for (var j = 1; j < result.length; j++) push(captures, maybeToString(result[j]));\n var namedCaptures = result.groups;\n if (functionalReplace) {\n var replacerArgs = concat([matched], captures, position, S);\n if (namedCaptures !== undefined) push(replacerArgs, namedCaptures);\n replacement = toString(apply(replaceValue, undefined, replacerArgs));\n } else {\n replacement = getSubstitution(matched, S, position, captures, namedCaptures, replaceValue);\n }\n if (position >= nextSourcePosition) {\n accumulatedResult += stringSlice(S, nextSourcePosition, position) + replacement;\n nextSourcePosition = position + matched.length;\n }\n }\n\n return accumulatedResult + stringSlice(S, nextSourcePosition);\n }\n ];\n}, !REPLACE_SUPPORTS_NAMED_GROUPS || !REPLACE_KEEPS_$0 || REGEXP_REPLACE_SUBSTITUTES_UNDEFINED_CAPTURE);\n", "'use strict';\nvar $ = require('../internals/export');\nvar call = require('../internals/function-call');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar requireObjectCoercible = require('../internals/require-object-coercible');\nvar isCallable = require('../internals/is-callable');\nvar isObject = require('../internals/is-object');\nvar isRegExp = require('../internals/is-regexp');\nvar toString = require('../internals/to-string');\nvar getMethod = require('../internals/get-method');\nvar getRegExpFlags = require('../internals/regexp-get-flags');\nvar getSubstitution = require('../internals/get-substitution');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\nvar IS_PURE = require('../internals/is-pure');\n\nvar REPLACE = wellKnownSymbol('replace');\nvar $TypeError = TypeError;\nvar indexOf = uncurryThis(''.indexOf);\nvar replace = uncurryThis(''.replace);\nvar stringSlice = uncurryThis(''.slice);\nvar max = Math.max;\n\n// `String.prototype.replaceAll` method\n// https://tc39.es/ecma262/#sec-string.prototype.replaceall\n$({ target: 'String', proto: true }, {\n replaceAll: function replaceAll(searchValue, replaceValue) {\n var O = requireObjectCoercible(this);\n var IS_REG_EXP, flags, replacer, string, searchString, functionalReplace, searchLength, advanceBy, position, replacement;\n var endOfLastMatch = 0;\n var result = '';\n if (isObject(searchValue)) {\n IS_REG_EXP = isRegExp(searchValue);\n if (IS_REG_EXP) {\n flags = toString(requireObjectCoercible(getRegExpFlags(searchValue)));\n if (!~indexOf(flags, 'g')) throw new $TypeError('`.replaceAll` does not allow non-global regexes');\n }\n replacer = getMethod(searchValue, REPLACE);\n if (replacer) return call(replacer, searchValue, O, replaceValue);\n if (IS_PURE && IS_REG_EXP) return replace(toString(O), searchValue, replaceValue);\n }\n string = toString(O);\n searchString = toString(searchValue);\n functionalReplace = isCallable(replaceValue);\n if (!functionalReplace) replaceValue = toString(replaceValue);\n searchLength = searchString.length;\n advanceBy = max(1, searchLength);\n position = indexOf(string, searchString);\n while (position !== -1) {\n replacement = functionalReplace\n ? toString(replaceValue(searchString, position, string))\n : getSubstitution(searchString, string, position, [], undefined, replaceValue);\n result += stringSlice(string, endOfLastMatch, position) + replacement;\n endOfLastMatch = position + searchLength;\n position = position + advanceBy > string.length ? -1 : indexOf(string, searchString, position + advanceBy);\n }\n if (endOfLastMatch < string.length) {\n result += stringSlice(string, endOfLastMatch);\n }\n return result;\n }\n});\n", "'use strict';\nvar call = require('../internals/function-call');\nvar fixRegExpWellKnownSymbolLogic = require('../internals/fix-regexp-well-known-symbol-logic');\nvar anObject = require('../internals/an-object');\nvar isObject = require('../internals/is-object');\nvar requireObjectCoercible = require('../internals/require-object-coercible');\nvar sameValue = require('../internals/same-value');\nvar toString = require('../internals/to-string');\nvar getMethod = require('../internals/get-method');\nvar regExpExec = require('../internals/regexp-exec-abstract');\n\n// @@search logic\nfixRegExpWellKnownSymbolLogic('search', function (SEARCH, nativeSearch, maybeCallNative) {\n return [\n // `String.prototype.search` method\n // https://tc39.es/ecma262/#sec-string.prototype.search\n function search(regexp) {\n var O = requireObjectCoercible(this);\n var searcher = isObject(regexp) ? getMethod(regexp, SEARCH) : undefined;\n return searcher ? call(searcher, regexp, O) : new RegExp(regexp)[SEARCH](toString(O));\n },\n // `RegExp.prototype[@@search]` method\n // https://tc39.es/ecma262/#sec-regexp.prototype-@@search\n function (string) {\n var rx = anObject(this);\n var S = toString(string);\n var res = maybeCallNative(nativeSearch, rx, S);\n\n if (res.done) return res.value;\n\n var previousLastIndex = rx.lastIndex;\n if (!sameValue(previousLastIndex, 0)) rx.lastIndex = 0;\n var result = regExpExec(rx, S);\n if (!sameValue(rx.lastIndex, previousLastIndex)) rx.lastIndex = previousLastIndex;\n return result === null ? -1 : result.index;\n }\n ];\n});\n", "'use strict';\nvar call = require('../internals/function-call');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar fixRegExpWellKnownSymbolLogic = require('../internals/fix-regexp-well-known-symbol-logic');\nvar anObject = require('../internals/an-object');\nvar isObject = require('../internals/is-object');\nvar requireObjectCoercible = require('../internals/require-object-coercible');\nvar speciesConstructor = require('../internals/species-constructor');\nvar advanceStringIndex = require('../internals/advance-string-index');\nvar toLength = require('../internals/to-length');\nvar toString = require('../internals/to-string');\nvar getMethod = require('../internals/get-method');\nvar getRegExpFlags = require('../internals/regexp-get-flags');\nvar regExpExec = require('../internals/regexp-exec-abstract');\nvar stickyHelpers = require('../internals/regexp-sticky-helpers');\nvar fails = require('../internals/fails');\n\nvar UNSUPPORTED_Y = stickyHelpers.UNSUPPORTED_Y;\nvar MAX_UINT32 = 0xFFFFFFFF;\nvar min = Math.min;\nvar push = uncurryThis([].push);\nvar stringSlice = uncurryThis(''.slice);\nvar stringIndexOf = uncurryThis(''.indexOf);\n\n// Chrome 51 has a buggy \"split\" implementation when RegExp#exec !== nativeExec\n// Weex JS has frozen built-in prototypes, so use try / catch wrapper\nvar SPLIT_WORKS_WITH_OVERWRITTEN_EXEC = !fails(function () {\n // eslint-disable-next-line regexp/no-empty-group -- required for testing\n var re = /(?:)/;\n var originalExec = re.exec;\n re.exec = function () { return originalExec.apply(this, arguments); };\n var result = 'ab'.split(re);\n return result.length !== 2 || result[0] !== 'a' || result[1] !== 'b';\n});\n\nvar BUGGY = 'abbc'.split(/(b)*/)[1] === 'c' ||\n // eslint-disable-next-line regexp/no-empty-group -- required for testing\n 'test'.split(/(?:)/, -1).length !== 4 ||\n 'ab'.split(/(?:ab)*/).length !== 2 ||\n '.'.split(/(.?)(.?)/).length !== 4 ||\n // eslint-disable-next-line regexp/no-empty-capturing-group, regexp/no-empty-group -- required for testing\n '.'.split(/()()/).length > 1 ||\n ''.split(/.?/).length;\n\n// @@split logic\nfixRegExpWellKnownSymbolLogic('split', function (SPLIT, nativeSplit, maybeCallNative) {\n var internalSplit = '0'.split(undefined, 0).length ? function (separator, limit) {\n return separator === undefined && limit === 0 ? [] : call(nativeSplit, this, separator, limit);\n } : nativeSplit;\n\n return [\n // `String.prototype.split` method\n // https://tc39.es/ecma262/#sec-string.prototype.split\n function split(separator, limit) {\n var O = requireObjectCoercible(this);\n var splitter = isObject(separator) ? getMethod(separator, SPLIT) : undefined;\n return splitter\n ? call(splitter, separator, O, limit)\n : call(internalSplit, toString(O), separator, limit);\n },\n // `RegExp.prototype[@@split]` method\n // https://tc39.es/ecma262/#sec-regexp.prototype-@@split\n //\n // NOTE: This cannot be properly polyfilled in engines that don't support\n // the 'y' flag.\n function (string, limit) {\n var rx = anObject(this);\n var S = toString(string);\n\n if (!BUGGY) {\n var res = maybeCallNative(internalSplit, rx, S, limit, internalSplit !== nativeSplit);\n if (res.done) return res.value;\n }\n\n var C = speciesConstructor(rx, RegExp);\n var flags = toString(getRegExpFlags(rx));\n var unicodeMatching = !!~stringIndexOf(flags, 'u') || !!~stringIndexOf(flags, 'v');\n if (UNSUPPORTED_Y) {\n if (!~stringIndexOf(flags, 'g')) flags += 'g';\n } else if (!~stringIndexOf(flags, 'y')) flags += 'y';\n // ^(? + rx + ) is needed, in combination with some S slicing, to\n // simulate the 'y' flag.\n var splitter = new C(UNSUPPORTED_Y ? '^(?:' + rx.source + ')' : rx, flags);\n var lim = limit === undefined ? MAX_UINT32 : limit >>> 0;\n if (lim === 0) return [];\n if (S.length === 0) return regExpExec(splitter, S) === null ? [S] : [];\n var p = 0;\n var q = 0;\n var A = [];\n while (q < S.length) {\n splitter.lastIndex = UNSUPPORTED_Y ? 0 : q;\n var z = regExpExec(splitter, UNSUPPORTED_Y ? stringSlice(S, q) : S);\n var e;\n if (\n z === null ||\n (e = min(toLength(splitter.lastIndex + (UNSUPPORTED_Y ? q : 0)), S.length)) === p\n ) {\n q = advanceStringIndex(S, q, unicodeMatching);\n } else {\n push(A, stringSlice(S, p, q));\n if (A.length === lim) return A;\n for (var i = 1; i <= z.length - 1; i++) {\n push(A, z[i]);\n if (A.length === lim) return A;\n }\n q = p = e;\n }\n }\n push(A, stringSlice(S, p));\n return A;\n }\n ];\n}, BUGGY || !SPLIT_WORKS_WITH_OVERWRITTEN_EXEC, UNSUPPORTED_Y);\n", "'use strict';\nvar $ = require('../internals/export');\nvar uncurryThis = require('../internals/function-uncurry-this-clause');\nvar getOwnPropertyDescriptor = require('../internals/object-get-own-property-descriptor').f;\nvar toLength = require('../internals/to-length');\nvar toString = require('../internals/to-string');\nvar notARegExp = require('../internals/not-a-regexp');\nvar requireObjectCoercible = require('../internals/require-object-coercible');\nvar correctIsRegExpLogic = require('../internals/correct-is-regexp-logic');\nvar IS_PURE = require('../internals/is-pure');\n\nvar stringSlice = uncurryThis(''.slice);\nvar min = Math.min;\n\nvar CORRECT_IS_REGEXP_LOGIC = correctIsRegExpLogic('startsWith');\n// https://github.com/zloirock/core-js/pull/702\nvar MDN_POLYFILL_BUG = !IS_PURE && !CORRECT_IS_REGEXP_LOGIC && !!function () {\n var descriptor = getOwnPropertyDescriptor(String.prototype, 'startsWith');\n return descriptor && !descriptor.writable;\n}();\n\n// `String.prototype.startsWith` method\n// https://tc39.es/ecma262/#sec-string.prototype.startswith\n$({ target: 'String', proto: true, forced: !MDN_POLYFILL_BUG && !CORRECT_IS_REGEXP_LOGIC }, {\n startsWith: function startsWith(searchString /* , position = 0 */) {\n var that = toString(requireObjectCoercible(this));\n notARegExp(searchString);\n var search = toString(searchString);\n var index = toLength(min(arguments.length > 1 ? arguments[1] : undefined, that.length));\n return stringSlice(that, index, index + search.length) === search;\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar requireObjectCoercible = require('../internals/require-object-coercible');\nvar toIntegerOrInfinity = require('../internals/to-integer-or-infinity');\nvar toString = require('../internals/to-string');\n\nvar stringSlice = uncurryThis(''.slice);\nvar max = Math.max;\nvar min = Math.min;\n\n// eslint-disable-next-line unicorn/prefer-string-slice -- required for testing\nvar FORCED = !''.substr || 'ab'.substr(-1) !== 'b';\n\n// `String.prototype.substr` method\n// https://tc39.es/ecma262/#sec-string.prototype.substr\n$({ target: 'String', proto: true, forced: FORCED }, {\n substr: function substr(start, length) {\n var that = toString(requireObjectCoercible(this));\n var size = that.length;\n var intStart = toIntegerOrInfinity(start);\n var finalStart = intStart < 0 ? max(size + intStart, 0) : min(intStart, size);\n var intLength = length === undefined ? size : toIntegerOrInfinity(length);\n if (intLength <= 0) return '';\n var intEnd = min(finalStart + intLength, size);\n return finalStart >= intEnd ? '' : stringSlice(that, finalStart, intEnd);\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar call = require('../internals/function-call');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar requireObjectCoercible = require('../internals/require-object-coercible');\nvar toString = require('../internals/to-string');\nvar fails = require('../internals/fails');\n\nvar $Array = Array;\nvar charAt = uncurryThis(''.charAt);\nvar charCodeAt = uncurryThis(''.charCodeAt);\nvar join = uncurryThis([].join);\n// eslint-disable-next-line es/no-string-prototype-towellformed -- safe\nvar $toWellFormed = ''.toWellFormed;\nvar REPLACEMENT_CHARACTER = '\\uFFFD';\n\n// Safari bug\nvar TO_STRING_CONVERSION_BUG = $toWellFormed && fails(function () {\n return call($toWellFormed, 1) !== '1';\n});\n\n// `String.prototype.toWellFormed` method\n// https://tc39.es/ecma262/#sec-string.prototype.towellformed\n$({ target: 'String', proto: true, forced: TO_STRING_CONVERSION_BUG }, {\n toWellFormed: function toWellFormed() {\n var S = toString(requireObjectCoercible(this));\n if (TO_STRING_CONVERSION_BUG) return call($toWellFormed, S);\n var length = S.length;\n var result = $Array(length);\n for (var i = 0; i < length; i++) {\n var charCode = charCodeAt(S, i);\n // single UTF-16 code unit\n if ((charCode & 0xF800) !== 0xD800) result[i] = charAt(S, i);\n // unpaired surrogate\n else if (charCode >= 0xDC00 || i + 1 >= length || (charCodeAt(S, i + 1) & 0xFC00) !== 0xDC00) result[i] = REPLACEMENT_CHARACTER;\n // surrogate pair\n else {\n result[i] = charAt(S, i);\n result[++i] = charAt(S, i);\n }\n } return join(result, '');\n }\n});\n", "'use strict';\nvar PROPER_FUNCTION_NAME = require('../internals/function-name').PROPER;\nvar fails = require('../internals/fails');\nvar whitespaces = require('../internals/whitespaces');\n\nvar non = '\\u200B\\u0085\\u180E';\n\n// check that a method works with the correct list\n// of whitespaces and has a correct name\nmodule.exports = function (METHOD_NAME) {\n return fails(function () {\n return !!whitespaces[METHOD_NAME]()\n || non[METHOD_NAME]() !== non\n || (PROPER_FUNCTION_NAME && whitespaces[METHOD_NAME].name !== METHOD_NAME);\n });\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar $trim = require('../internals/string-trim').trim;\nvar forcedStringTrimMethod = require('../internals/string-trim-forced');\n\n// `String.prototype.trim` method\n// https://tc39.es/ecma262/#sec-string.prototype.trim\n$({ target: 'String', proto: true, forced: forcedStringTrimMethod('trim') }, {\n trim: function trim() {\n return $trim(this);\n }\n});\n", "'use strict';\nvar $trimEnd = require('../internals/string-trim').end;\nvar forcedStringTrimMethod = require('../internals/string-trim-forced');\n\n// `String.prototype.{ trimEnd, trimRight }` method\n// https://tc39.es/ecma262/#sec-string.prototype.trimend\n// https://tc39.es/ecma262/#String.prototype.trimright\nmodule.exports = forcedStringTrimMethod('trimEnd') ? function trimEnd() {\n return $trimEnd(this);\n// eslint-disable-next-line es/no-string-prototype-trimstart-trimend -- safe\n} : ''.trimEnd;\n", "'use strict';\nvar $ = require('../internals/export');\nvar trimEnd = require('../internals/string-trim-end');\n\n// `String.prototype.trimRight` method\n// https://tc39.es/ecma262/#sec-string.prototype.trimend\n// eslint-disable-next-line es/no-string-prototype-trimleft-trimright -- safe\n$({ target: 'String', proto: true, name: 'trimEnd', forced: ''.trimRight !== trimEnd }, {\n trimRight: trimEnd\n});\n", "'use strict';\n// TODO: Remove this line from `core-js@4`\nrequire('../modules/es.string.trim-right');\nvar $ = require('../internals/export');\nvar trimEnd = require('../internals/string-trim-end');\n\n// `String.prototype.trimEnd` method\n// https://tc39.es/ecma262/#sec-string.prototype.trimend\n// eslint-disable-next-line es/no-string-prototype-trimstart-trimend -- safe\n$({ target: 'String', proto: true, name: 'trimEnd', forced: ''.trimEnd !== trimEnd }, {\n trimEnd: trimEnd\n});\n", "'use strict';\nvar $trimStart = require('../internals/string-trim').start;\nvar forcedStringTrimMethod = require('../internals/string-trim-forced');\n\n// `String.prototype.{ trimStart, trimLeft }` method\n// https://tc39.es/ecma262/#sec-string.prototype.trimstart\n// https://tc39.es/ecma262/#String.prototype.trimleft\nmodule.exports = forcedStringTrimMethod('trimStart') ? function trimStart() {\n return $trimStart(this);\n// eslint-disable-next-line es/no-string-prototype-trimstart-trimend -- safe\n} : ''.trimStart;\n", "'use strict';\nvar $ = require('../internals/export');\nvar trimStart = require('../internals/string-trim-start');\n\n// `String.prototype.trimLeft` method\n// https://tc39.es/ecma262/#sec-string.prototype.trimleft\n// eslint-disable-next-line es/no-string-prototype-trimleft-trimright -- safe\n$({ target: 'String', proto: true, name: 'trimStart', forced: ''.trimLeft !== trimStart }, {\n trimLeft: trimStart\n});\n", "'use strict';\n// TODO: Remove this line from `core-js@4`\nrequire('../modules/es.string.trim-left');\nvar $ = require('../internals/export');\nvar trimStart = require('../internals/string-trim-start');\n\n// `String.prototype.trimStart` method\n// https://tc39.es/ecma262/#sec-string.prototype.trimstart\n// eslint-disable-next-line es/no-string-prototype-trimstart-trimend -- safe\n$({ target: 'String', proto: true, name: 'trimStart', forced: ''.trimStart !== trimStart }, {\n trimStart: trimStart\n});\n", "'use strict';\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar requireObjectCoercible = require('../internals/require-object-coercible');\nvar toString = require('../internals/to-string');\n\nvar quot = /\"/g;\nvar replace = uncurryThis(''.replace);\n\n// `CreateHTML` abstract operation\n// https://tc39.es/ecma262/#sec-createhtml\nmodule.exports = function (string, tag, attribute, value) {\n var S = toString(requireObjectCoercible(string));\n var p1 = '<' + tag;\n if (attribute !== '') p1 += ' ' + attribute + '=\"' + replace(toString(value), quot, '"') + '\"';\n return p1 + '>' + S + '';\n};\n", "'use strict';\nvar fails = require('../internals/fails');\n\n// check the existence of a method, lowercase\n// of a tag and escaping quotes in arguments\nmodule.exports = function (METHOD_NAME) {\n return fails(function () {\n var test = ''[METHOD_NAME]('\"');\n return test !== test.toLowerCase() || test.split('\"').length > 3;\n });\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar createHTML = require('../internals/create-html');\nvar forcedStringHTMLMethod = require('../internals/string-html-forced');\n\n// `String.prototype.anchor` method\n// https://tc39.es/ecma262/#sec-string.prototype.anchor\n$({ target: 'String', proto: true, forced: forcedStringHTMLMethod('anchor') }, {\n anchor: function anchor(name) {\n return createHTML(this, 'a', 'name', name);\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar createHTML = require('../internals/create-html');\nvar forcedStringHTMLMethod = require('../internals/string-html-forced');\n\n// `String.prototype.big` method\n// https://tc39.es/ecma262/#sec-string.prototype.big\n$({ target: 'String', proto: true, forced: forcedStringHTMLMethod('big') }, {\n big: function big() {\n return createHTML(this, 'big', '', '');\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar createHTML = require('../internals/create-html');\nvar forcedStringHTMLMethod = require('../internals/string-html-forced');\n\n// `String.prototype.blink` method\n// https://tc39.es/ecma262/#sec-string.prototype.blink\n$({ target: 'String', proto: true, forced: forcedStringHTMLMethod('blink') }, {\n blink: function blink() {\n return createHTML(this, 'blink', '', '');\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar createHTML = require('../internals/create-html');\nvar forcedStringHTMLMethod = require('../internals/string-html-forced');\n\n// `String.prototype.bold` method\n// https://tc39.es/ecma262/#sec-string.prototype.bold\n$({ target: 'String', proto: true, forced: forcedStringHTMLMethod('bold') }, {\n bold: function bold() {\n return createHTML(this, 'b', '', '');\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar createHTML = require('../internals/create-html');\nvar forcedStringHTMLMethod = require('../internals/string-html-forced');\n\n// `String.prototype.fixed` method\n// https://tc39.es/ecma262/#sec-string.prototype.fixed\n$({ target: 'String', proto: true, forced: forcedStringHTMLMethod('fixed') }, {\n fixed: function fixed() {\n return createHTML(this, 'tt', '', '');\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar createHTML = require('../internals/create-html');\nvar forcedStringHTMLMethod = require('../internals/string-html-forced');\n\n// `String.prototype.fontcolor` method\n// https://tc39.es/ecma262/#sec-string.prototype.fontcolor\n$({ target: 'String', proto: true, forced: forcedStringHTMLMethod('fontcolor') }, {\n fontcolor: function fontcolor(color) {\n return createHTML(this, 'font', 'color', color);\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar createHTML = require('../internals/create-html');\nvar forcedStringHTMLMethod = require('../internals/string-html-forced');\n\n// `String.prototype.fontsize` method\n// https://tc39.es/ecma262/#sec-string.prototype.fontsize\n$({ target: 'String', proto: true, forced: forcedStringHTMLMethod('fontsize') }, {\n fontsize: function fontsize(size) {\n return createHTML(this, 'font', 'size', size);\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar createHTML = require('../internals/create-html');\nvar forcedStringHTMLMethod = require('../internals/string-html-forced');\n\n// `String.prototype.italics` method\n// https://tc39.es/ecma262/#sec-string.prototype.italics\n$({ target: 'String', proto: true, forced: forcedStringHTMLMethod('italics') }, {\n italics: function italics() {\n return createHTML(this, 'i', '', '');\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar createHTML = require('../internals/create-html');\nvar forcedStringHTMLMethod = require('../internals/string-html-forced');\n\n// `String.prototype.link` method\n// https://tc39.es/ecma262/#sec-string.prototype.link\n$({ target: 'String', proto: true, forced: forcedStringHTMLMethod('link') }, {\n link: function link(url) {\n return createHTML(this, 'a', 'href', url);\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar createHTML = require('../internals/create-html');\nvar forcedStringHTMLMethod = require('../internals/string-html-forced');\n\n// `String.prototype.small` method\n// https://tc39.es/ecma262/#sec-string.prototype.small\n$({ target: 'String', proto: true, forced: forcedStringHTMLMethod('small') }, {\n small: function small() {\n return createHTML(this, 'small', '', '');\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar createHTML = require('../internals/create-html');\nvar forcedStringHTMLMethod = require('../internals/string-html-forced');\n\n// `String.prototype.strike` method\n// https://tc39.es/ecma262/#sec-string.prototype.strike\n$({ target: 'String', proto: true, forced: forcedStringHTMLMethod('strike') }, {\n strike: function strike() {\n return createHTML(this, 'strike', '', '');\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar createHTML = require('../internals/create-html');\nvar forcedStringHTMLMethod = require('../internals/string-html-forced');\n\n// `String.prototype.sub` method\n// https://tc39.es/ecma262/#sec-string.prototype.sub\n$({ target: 'String', proto: true, forced: forcedStringHTMLMethod('sub') }, {\n sub: function sub() {\n return createHTML(this, 'sub', '', '');\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar createHTML = require('../internals/create-html');\nvar forcedStringHTMLMethod = require('../internals/string-html-forced');\n\n// `String.prototype.sup` method\n// https://tc39.es/ecma262/#sec-string.prototype.sup\n$({ target: 'String', proto: true, forced: forcedStringHTMLMethod('sup') }, {\n sup: function sup() {\n return createHTML(this, 'sup', '', '');\n }\n});\n", "'use strict';\n/* eslint-disable no-new, sonarjs/inconsistent-function-call -- required for testing */\nvar globalThis = require('../internals/global-this');\nvar fails = require('../internals/fails');\nvar checkCorrectnessOfIteration = require('../internals/check-correctness-of-iteration');\nvar NATIVE_ARRAY_BUFFER_VIEWS = require('../internals/array-buffer-view-core').NATIVE_ARRAY_BUFFER_VIEWS;\n\nvar ArrayBuffer = globalThis.ArrayBuffer;\nvar Int8Array = globalThis.Int8Array;\n\nmodule.exports = !NATIVE_ARRAY_BUFFER_VIEWS || !fails(function () {\n Int8Array(1);\n}) || !fails(function () {\n new Int8Array(-1);\n}) || !checkCorrectnessOfIteration(function (iterable) {\n new Int8Array();\n new Int8Array(null);\n new Int8Array(1.5);\n new Int8Array(iterable);\n}, true) || fails(function () {\n // Safari (11+) bug - a reason why even Safari 13 should load a typed array polyfill\n return new Int8Array(new ArrayBuffer(2), 1, undefined).length !== 1;\n});\n", "'use strict';\nvar toPositiveInteger = require('../internals/to-positive-integer');\n\nvar $RangeError = RangeError;\n\nmodule.exports = function (it, BYTES) {\n var offset = toPositiveInteger(it);\n if (offset % BYTES) throw new $RangeError('Wrong offset');\n return offset;\n};\n", "'use strict';\nvar floor = Math.floor;\n\n// https://tc39.es/ecma262/#sec-touint8clamp\nmodule.exports = function (it) {\n var number = +it;\n // eslint-disable-next-line no-self-compare -- NaN check\n if (number !== number || number <= 0) return 0;\n if (number >= 0xFF) return 0xFF;\n var f = floor(number);\n if (f + 0.5 < number) return f + 1;\n if (number < f + 0.5) return f;\n // round-half-to-even (banker's rounding)\n return f % 2 === 0 ? f : f + 1;\n};\n", "'use strict';\nvar classof = require('../internals/classof');\n\nmodule.exports = function (it) {\n var klass = classof(it);\n return klass === 'BigInt64Array' || klass === 'BigUint64Array';\n};\n", "'use strict';\nvar toPrimitive = require('../internals/to-primitive');\n\nvar $TypeError = TypeError;\n\n// `ToBigInt` abstract operation\n// https://tc39.es/ecma262/#sec-tobigint\nmodule.exports = function (argument) {\n var prim = toPrimitive(argument, 'number');\n if (typeof prim == 'number') throw new $TypeError(\"Can't convert number to bigint\");\n // eslint-disable-next-line es/no-bigint -- safe\n return BigInt(prim);\n};\n", "'use strict';\nvar bind = require('../internals/function-bind-context');\nvar call = require('../internals/function-call');\nvar aCallable = require('../internals/a-callable');\nvar aConstructor = require('../internals/a-constructor');\nvar toObject = require('../internals/to-object');\nvar lengthOfArrayLike = require('../internals/length-of-array-like');\nvar getIterator = require('../internals/get-iterator');\nvar getIteratorMethod = require('../internals/get-iterator-method');\nvar isArrayIteratorMethod = require('../internals/is-array-iterator-method');\nvar isBigIntArray = require('../internals/is-big-int-array');\nvar aTypedArrayConstructor = require('../internals/array-buffer-view-core').aTypedArrayConstructor;\nvar toBigInt = require('../internals/to-big-int');\n\nmodule.exports = function from(source /* , mapfn, thisArg */) {\n var C = aConstructor(this);\n var argumentsLength = arguments.length;\n var mapfn = argumentsLength > 1 ? arguments[1] : undefined;\n var mapping = mapfn !== undefined;\n if (mapping) aCallable(mapfn);\n var O = toObject(source);\n var iteratorMethod = getIteratorMethod(O);\n var i, length, result, thisIsBigIntArray, value, step, iterator, next;\n if (iteratorMethod && !isArrayIteratorMethod(iteratorMethod)) {\n iterator = getIterator(O, iteratorMethod);\n next = iterator.next;\n O = [];\n while (!(step = call(next, iterator)).done) {\n O.push(step.value);\n }\n }\n if (mapping && argumentsLength > 2) {\n mapfn = bind(mapfn, arguments[2]);\n }\n length = lengthOfArrayLike(O);\n result = new (aTypedArrayConstructor(C))(length);\n thisIsBigIntArray = isBigIntArray(result);\n for (i = 0; length > i; i++) {\n value = mapping ? mapfn(O[i], i) : O[i];\n // FF30- typed arrays doesn't properly convert objects to typed array values\n result[i] = thisIsBigIntArray ? toBigInt(value) : +value;\n }\n return result;\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar globalThis = require('../internals/global-this');\nvar call = require('../internals/function-call');\nvar DESCRIPTORS = require('../internals/descriptors');\nvar TYPED_ARRAYS_CONSTRUCTORS_REQUIRES_WRAPPERS = require('../internals/typed-array-constructors-require-wrappers');\nvar ArrayBufferViewCore = require('../internals/array-buffer-view-core');\nvar ArrayBufferModule = require('../internals/array-buffer');\nvar anInstance = require('../internals/an-instance');\nvar createPropertyDescriptor = require('../internals/create-property-descriptor');\nvar createNonEnumerableProperty = require('../internals/create-non-enumerable-property');\nvar isIntegralNumber = require('../internals/is-integral-number');\nvar toIndex = require('../internals/to-index');\nvar toOffset = require('../internals/to-offset');\nvar toUint8Clamped = require('../internals/to-uint8-clamped');\nvar toPropertyKey = require('../internals/to-property-key');\nvar hasOwn = require('../internals/has-own-property');\nvar classof = require('../internals/classof');\nvar isObject = require('../internals/is-object');\nvar isSymbol = require('../internals/is-symbol');\nvar create = require('../internals/object-create');\nvar isPrototypeOf = require('../internals/object-is-prototype-of');\nvar setPrototypeOf = require('../internals/object-set-prototype-of');\nvar getOwnPropertyNames = require('../internals/object-get-own-property-names').f;\nvar typedArrayFrom = require('../internals/typed-array-from');\nvar forEach = require('../internals/array-iteration').forEach;\nvar setSpecies = require('../internals/set-species');\nvar defineBuiltInAccessor = require('../internals/define-built-in-accessor');\nvar definePropertyModule = require('../internals/object-define-property');\nvar getOwnPropertyDescriptorModule = require('../internals/object-get-own-property-descriptor');\nvar arrayFromConstructorAndList = require('../internals/array-from-constructor-and-list');\nvar InternalStateModule = require('../internals/internal-state');\nvar inheritIfRequired = require('../internals/inherit-if-required');\n\nvar getInternalState = InternalStateModule.get;\nvar setInternalState = InternalStateModule.set;\nvar enforceInternalState = InternalStateModule.enforce;\nvar nativeDefineProperty = definePropertyModule.f;\nvar nativeGetOwnPropertyDescriptor = getOwnPropertyDescriptorModule.f;\nvar RangeError = globalThis.RangeError;\nvar ArrayBuffer = ArrayBufferModule.ArrayBuffer;\nvar ArrayBufferPrototype = ArrayBuffer.prototype;\nvar DataView = ArrayBufferModule.DataView;\nvar NATIVE_ARRAY_BUFFER_VIEWS = ArrayBufferViewCore.NATIVE_ARRAY_BUFFER_VIEWS;\nvar TYPED_ARRAY_TAG = ArrayBufferViewCore.TYPED_ARRAY_TAG;\nvar TypedArray = ArrayBufferViewCore.TypedArray;\nvar TypedArrayPrototype = ArrayBufferViewCore.TypedArrayPrototype;\nvar isTypedArray = ArrayBufferViewCore.isTypedArray;\nvar BYTES_PER_ELEMENT = 'BYTES_PER_ELEMENT';\nvar WRONG_LENGTH = 'Wrong length';\n\nvar addGetter = function (it, key) {\n defineBuiltInAccessor(it, key, {\n configurable: true,\n get: function () {\n return getInternalState(this)[key];\n }\n });\n};\n\nvar isArrayBuffer = function (it) {\n var klass;\n return isPrototypeOf(ArrayBufferPrototype, it) || (klass = classof(it)) === 'ArrayBuffer' || klass === 'SharedArrayBuffer';\n};\n\nvar isTypedArrayIndex = function (target, key) {\n return isTypedArray(target)\n && !isSymbol(key)\n && key in target\n && isIntegralNumber(+key)\n && key >= 0;\n};\n\nvar wrappedGetOwnPropertyDescriptor = function getOwnPropertyDescriptor(target, key) {\n key = toPropertyKey(key);\n return isTypedArrayIndex(target, key)\n ? createPropertyDescriptor(2, target[key])\n : nativeGetOwnPropertyDescriptor(target, key);\n};\n\nvar wrappedDefineProperty = function defineProperty(target, key, descriptor) {\n key = toPropertyKey(key);\n if (isTypedArrayIndex(target, key)\n && isObject(descriptor)\n && hasOwn(descriptor, 'value')\n && !hasOwn(descriptor, 'get')\n && !hasOwn(descriptor, 'set')\n // TODO: add validation descriptor w/o calling accessors\n && !descriptor.configurable\n && (!hasOwn(descriptor, 'writable') || descriptor.writable)\n && (!hasOwn(descriptor, 'enumerable') || descriptor.enumerable)\n ) {\n target[key] = descriptor.value;\n return target;\n } return nativeDefineProperty(target, key, descriptor);\n};\n\nif (DESCRIPTORS) {\n if (!NATIVE_ARRAY_BUFFER_VIEWS) {\n getOwnPropertyDescriptorModule.f = wrappedGetOwnPropertyDescriptor;\n definePropertyModule.f = wrappedDefineProperty;\n addGetter(TypedArrayPrototype, 'buffer');\n addGetter(TypedArrayPrototype, 'byteOffset');\n addGetter(TypedArrayPrototype, 'byteLength');\n addGetter(TypedArrayPrototype, 'length');\n }\n\n $({ target: 'Object', stat: true, forced: !NATIVE_ARRAY_BUFFER_VIEWS }, {\n getOwnPropertyDescriptor: wrappedGetOwnPropertyDescriptor,\n defineProperty: wrappedDefineProperty\n });\n\n module.exports = function (TYPE, wrapper, CLAMPED) {\n var BYTES = TYPE.match(/\\d+/)[0] / 8;\n var CONSTRUCTOR_NAME = TYPE + (CLAMPED ? 'Clamped' : '') + 'Array';\n var GETTER = 'get' + TYPE;\n var SETTER = 'set' + TYPE;\n var NativeTypedArrayConstructor = globalThis[CONSTRUCTOR_NAME];\n var TypedArrayConstructor = NativeTypedArrayConstructor;\n var TypedArrayConstructorPrototype = TypedArrayConstructor && TypedArrayConstructor.prototype;\n var exported = {};\n\n var getter = function (that, index) {\n var data = getInternalState(that);\n return data.view[GETTER](index * BYTES + data.byteOffset, true);\n };\n\n var setter = function (that, index, value) {\n var data = getInternalState(that);\n data.view[SETTER](index * BYTES + data.byteOffset, CLAMPED ? toUint8Clamped(value) : value, true);\n };\n\n var addElement = function (that, index) {\n nativeDefineProperty(that, index, {\n get: function () {\n return getter(this, index);\n },\n set: function (value) {\n return setter(this, index, value);\n },\n enumerable: true\n });\n };\n\n if (!NATIVE_ARRAY_BUFFER_VIEWS) {\n TypedArrayConstructor = wrapper(function (that, data, offset, $length) {\n anInstance(that, TypedArrayConstructorPrototype);\n var index = 0;\n var byteOffset = 0;\n var buffer, byteLength, length;\n if (!isObject(data)) {\n length = toIndex(data);\n byteLength = length * BYTES;\n buffer = new ArrayBuffer(byteLength);\n } else if (isArrayBuffer(data)) {\n buffer = data;\n byteOffset = toOffset(offset, BYTES);\n var $len = data.byteLength;\n if ($length === undefined) {\n if ($len % BYTES) throw new RangeError(WRONG_LENGTH);\n byteLength = $len - byteOffset;\n if (byteLength < 0) throw new RangeError(WRONG_LENGTH);\n } else {\n byteLength = toIndex($length) * BYTES;\n if (byteLength + byteOffset > $len) throw new RangeError(WRONG_LENGTH);\n }\n length = byteLength / BYTES;\n } else if (isTypedArray(data)) {\n return arrayFromConstructorAndList(TypedArrayConstructor, data);\n } else {\n return call(typedArrayFrom, TypedArrayConstructor, data);\n }\n setInternalState(that, {\n buffer: buffer,\n byteOffset: byteOffset,\n byteLength: byteLength,\n length: length,\n view: new DataView(buffer)\n });\n while (index < length) addElement(that, index++);\n });\n\n if (setPrototypeOf) setPrototypeOf(TypedArrayConstructor, TypedArray);\n TypedArrayConstructorPrototype = TypedArrayConstructor.prototype = create(TypedArrayPrototype);\n } else if (TYPED_ARRAYS_CONSTRUCTORS_REQUIRES_WRAPPERS) {\n TypedArrayConstructor = wrapper(function (dummy, data, typedArrayOffset, $length) {\n anInstance(dummy, TypedArrayConstructorPrototype);\n return inheritIfRequired(function () {\n if (!isObject(data)) return new NativeTypedArrayConstructor(toIndex(data));\n if (isArrayBuffer(data)) return $length !== undefined\n ? new NativeTypedArrayConstructor(data, toOffset(typedArrayOffset, BYTES), $length)\n : typedArrayOffset !== undefined\n ? new NativeTypedArrayConstructor(data, toOffset(typedArrayOffset, BYTES))\n : new NativeTypedArrayConstructor(data);\n if (isTypedArray(data)) return arrayFromConstructorAndList(TypedArrayConstructor, data);\n return call(typedArrayFrom, TypedArrayConstructor, data);\n }(), dummy, TypedArrayConstructor);\n });\n\n if (setPrototypeOf) setPrototypeOf(TypedArrayConstructor, TypedArray);\n forEach(getOwnPropertyNames(NativeTypedArrayConstructor), function (key) {\n if (!(key in TypedArrayConstructor)) {\n createNonEnumerableProperty(TypedArrayConstructor, key, NativeTypedArrayConstructor[key]);\n }\n });\n TypedArrayConstructor.prototype = TypedArrayConstructorPrototype;\n }\n\n if (TypedArrayConstructorPrototype.constructor !== TypedArrayConstructor) {\n createNonEnumerableProperty(TypedArrayConstructorPrototype, 'constructor', TypedArrayConstructor);\n }\n\n enforceInternalState(TypedArrayConstructorPrototype).TypedArrayConstructor = TypedArrayConstructor;\n\n if (TYPED_ARRAY_TAG) {\n createNonEnumerableProperty(TypedArrayConstructorPrototype, TYPED_ARRAY_TAG, CONSTRUCTOR_NAME);\n }\n\n var FORCED = TypedArrayConstructor !== NativeTypedArrayConstructor;\n\n exported[CONSTRUCTOR_NAME] = TypedArrayConstructor;\n\n $({ global: true, constructor: true, forced: FORCED, sham: !NATIVE_ARRAY_BUFFER_VIEWS }, exported);\n\n if (!(BYTES_PER_ELEMENT in TypedArrayConstructor)) {\n createNonEnumerableProperty(TypedArrayConstructor, BYTES_PER_ELEMENT, BYTES);\n }\n\n if (!(BYTES_PER_ELEMENT in TypedArrayConstructorPrototype)) {\n createNonEnumerableProperty(TypedArrayConstructorPrototype, BYTES_PER_ELEMENT, BYTES);\n }\n\n setSpecies(CONSTRUCTOR_NAME);\n };\n} else module.exports = function () { /* empty */ };\n", "'use strict';\nvar createTypedArrayConstructor = require('../internals/typed-array-constructor');\n\n// `Float32Array` constructor\n// https://tc39.es/ecma262/#sec-typedarray-objects\ncreateTypedArrayConstructor('Float32', function (init) {\n return function Float32Array(data, byteOffset, length) {\n return init(this, data, byteOffset, length);\n };\n});\n", "'use strict';\nvar createTypedArrayConstructor = require('../internals/typed-array-constructor');\n\n// `Float64Array` constructor\n// https://tc39.es/ecma262/#sec-typedarray-objects\ncreateTypedArrayConstructor('Float64', function (init) {\n return function Float64Array(data, byteOffset, length) {\n return init(this, data, byteOffset, length);\n };\n});\n", "'use strict';\nvar createTypedArrayConstructor = require('../internals/typed-array-constructor');\n\n// `Int8Array` constructor\n// https://tc39.es/ecma262/#sec-typedarray-objects\ncreateTypedArrayConstructor('Int8', function (init) {\n return function Int8Array(data, byteOffset, length) {\n return init(this, data, byteOffset, length);\n };\n});\n", "'use strict';\nvar createTypedArrayConstructor = require('../internals/typed-array-constructor');\n\n// `Int16Array` constructor\n// https://tc39.es/ecma262/#sec-typedarray-objects\ncreateTypedArrayConstructor('Int16', function (init) {\n return function Int16Array(data, byteOffset, length) {\n return init(this, data, byteOffset, length);\n };\n});\n", "'use strict';\nvar createTypedArrayConstructor = require('../internals/typed-array-constructor');\n\n// `Int32Array` constructor\n// https://tc39.es/ecma262/#sec-typedarray-objects\ncreateTypedArrayConstructor('Int32', function (init) {\n return function Int32Array(data, byteOffset, length) {\n return init(this, data, byteOffset, length);\n };\n});\n", "'use strict';\nvar createTypedArrayConstructor = require('../internals/typed-array-constructor');\n\n// `Uint8Array` constructor\n// https://tc39.es/ecma262/#sec-typedarray-objects\ncreateTypedArrayConstructor('Uint8', function (init) {\n return function Uint8Array(data, byteOffset, length) {\n return init(this, data, byteOffset, length);\n };\n});\n", "'use strict';\nvar createTypedArrayConstructor = require('../internals/typed-array-constructor');\n\n// `Uint8ClampedArray` constructor\n// https://tc39.es/ecma262/#sec-typedarray-objects\ncreateTypedArrayConstructor('Uint8', function (init) {\n return function Uint8ClampedArray(data, byteOffset, length) {\n return init(this, data, byteOffset, length);\n };\n}, true);\n", "'use strict';\nvar createTypedArrayConstructor = require('../internals/typed-array-constructor');\n\n// `Uint16Array` constructor\n// https://tc39.es/ecma262/#sec-typedarray-objects\ncreateTypedArrayConstructor('Uint16', function (init) {\n return function Uint16Array(data, byteOffset, length) {\n return init(this, data, byteOffset, length);\n };\n});\n", "'use strict';\nvar createTypedArrayConstructor = require('../internals/typed-array-constructor');\n\n// `Uint32Array` constructor\n// https://tc39.es/ecma262/#sec-typedarray-objects\ncreateTypedArrayConstructor('Uint32', function (init) {\n return function Uint32Array(data, byteOffset, length) {\n return init(this, data, byteOffset, length);\n };\n});\n", "'use strict';\nvar ArrayBufferViewCore = require('../internals/array-buffer-view-core');\nvar lengthOfArrayLike = require('../internals/length-of-array-like');\nvar toIntegerOrInfinity = require('../internals/to-integer-or-infinity');\n\nvar aTypedArray = ArrayBufferViewCore.aTypedArray;\nvar exportTypedArrayMethod = ArrayBufferViewCore.exportTypedArrayMethod;\n\n// `%TypedArray%.prototype.at` method\n// https://tc39.es/ecma262/#sec-%typedarray%.prototype.at\nexportTypedArrayMethod('at', function at(index) {\n var O = aTypedArray(this);\n var len = lengthOfArrayLike(O);\n var relativeIndex = toIntegerOrInfinity(index);\n var k = relativeIndex >= 0 ? relativeIndex : len + relativeIndex;\n return (k < 0 || k >= len) ? undefined : O[k];\n});\n", "'use strict';\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar ArrayBufferViewCore = require('../internals/array-buffer-view-core');\nvar $ArrayCopyWithin = require('../internals/array-copy-within');\n\nvar u$ArrayCopyWithin = uncurryThis($ArrayCopyWithin);\nvar aTypedArray = ArrayBufferViewCore.aTypedArray;\nvar exportTypedArrayMethod = ArrayBufferViewCore.exportTypedArrayMethod;\n\n// `%TypedArray%.prototype.copyWithin` method\n// https://tc39.es/ecma262/#sec-%typedarray%.prototype.copywithin\nexportTypedArrayMethod('copyWithin', function copyWithin(target, start /* , end */) {\n return u$ArrayCopyWithin(aTypedArray(this), target, start, arguments.length > 2 ? arguments[2] : undefined);\n});\n", "'use strict';\nvar ArrayBufferViewCore = require('../internals/array-buffer-view-core');\nvar $every = require('../internals/array-iteration').every;\n\nvar aTypedArray = ArrayBufferViewCore.aTypedArray;\nvar exportTypedArrayMethod = ArrayBufferViewCore.exportTypedArrayMethod;\n\n// `%TypedArray%.prototype.every` method\n// https://tc39.es/ecma262/#sec-%typedarray%.prototype.every\nexportTypedArrayMethod('every', function every(callbackfn /* , thisArg */) {\n return $every(aTypedArray(this), callbackfn, arguments.length > 1 ? arguments[1] : undefined);\n});\n", "'use strict';\nvar ArrayBufferViewCore = require('../internals/array-buffer-view-core');\nvar $fill = require('../internals/array-fill');\nvar toBigInt = require('../internals/to-big-int');\nvar classof = require('../internals/classof');\nvar call = require('../internals/function-call');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar fails = require('../internals/fails');\n\nvar aTypedArray = ArrayBufferViewCore.aTypedArray;\nvar exportTypedArrayMethod = ArrayBufferViewCore.exportTypedArrayMethod;\nvar slice = uncurryThis(''.slice);\n\n// V8 ~ Chrome < 59, Safari < 14.1, FF < 55, Edge <=18\nvar CONVERSION_BUG = fails(function () {\n var count = 0;\n // eslint-disable-next-line es/no-typed-arrays -- safe\n new Int8Array(2).fill({ valueOf: function () { return count++; } });\n return count !== 1;\n});\n\n// `%TypedArray%.prototype.fill` method\n// https://tc39.es/ecma262/#sec-%typedarray%.prototype.fill\nexportTypedArrayMethod('fill', function fill(value /* , start, end */) {\n var length = arguments.length;\n aTypedArray(this);\n var actualValue = slice(classof(this), 0, 3) === 'Big' ? toBigInt(value) : +value;\n return call($fill, this, actualValue, length > 1 ? arguments[1] : undefined, length > 2 ? arguments[2] : undefined);\n}, CONVERSION_BUG);\n", "'use strict';\nvar arrayFromConstructorAndList = require('../internals/array-from-constructor-and-list');\nvar getTypedArrayConstructor = require('../internals/array-buffer-view-core').getTypedArrayConstructor;\n\nmodule.exports = function (instance, list) {\n return arrayFromConstructorAndList(getTypedArrayConstructor(instance), list);\n};\n", "'use strict';\nvar ArrayBufferViewCore = require('../internals/array-buffer-view-core');\nvar $filter = require('../internals/array-iteration').filter;\nvar fromSameTypeAndList = require('../internals/typed-array-from-same-type-and-list');\n\nvar aTypedArray = ArrayBufferViewCore.aTypedArray;\nvar exportTypedArrayMethod = ArrayBufferViewCore.exportTypedArrayMethod;\n\n// `%TypedArray%.prototype.filter` method\n// https://tc39.es/ecma262/#sec-%typedarray%.prototype.filter\nexportTypedArrayMethod('filter', function filter(callbackfn /* , thisArg */) {\n var list = $filter(aTypedArray(this), callbackfn, arguments.length > 1 ? arguments[1] : undefined);\n return fromSameTypeAndList(this, list);\n});\n", "'use strict';\nvar ArrayBufferViewCore = require('../internals/array-buffer-view-core');\nvar $find = require('../internals/array-iteration').find;\n\nvar aTypedArray = ArrayBufferViewCore.aTypedArray;\nvar exportTypedArrayMethod = ArrayBufferViewCore.exportTypedArrayMethod;\n\n// `%TypedArray%.prototype.find` method\n// https://tc39.es/ecma262/#sec-%typedarray%.prototype.find\nexportTypedArrayMethod('find', function find(predicate /* , thisArg */) {\n return $find(aTypedArray(this), predicate, arguments.length > 1 ? arguments[1] : undefined);\n});\n", "'use strict';\nvar ArrayBufferViewCore = require('../internals/array-buffer-view-core');\nvar $findIndex = require('../internals/array-iteration').findIndex;\n\nvar aTypedArray = ArrayBufferViewCore.aTypedArray;\nvar exportTypedArrayMethod = ArrayBufferViewCore.exportTypedArrayMethod;\n\n// `%TypedArray%.prototype.findIndex` method\n// https://tc39.es/ecma262/#sec-%typedarray%.prototype.findindex\nexportTypedArrayMethod('findIndex', function findIndex(predicate /* , thisArg */) {\n return $findIndex(aTypedArray(this), predicate, arguments.length > 1 ? arguments[1] : undefined);\n});\n", "'use strict';\nvar ArrayBufferViewCore = require('../internals/array-buffer-view-core');\nvar $findLast = require('../internals/array-iteration-from-last').findLast;\n\nvar aTypedArray = ArrayBufferViewCore.aTypedArray;\nvar exportTypedArrayMethod = ArrayBufferViewCore.exportTypedArrayMethod;\n\n// `%TypedArray%.prototype.findLast` method\n// https://tc39.es/ecma262/#sec-%typedarray%.prototype.findlast\nexportTypedArrayMethod('findLast', function findLast(predicate /* , thisArg */) {\n return $findLast(aTypedArray(this), predicate, arguments.length > 1 ? arguments[1] : undefined);\n});\n", "'use strict';\nvar ArrayBufferViewCore = require('../internals/array-buffer-view-core');\nvar $findLastIndex = require('../internals/array-iteration-from-last').findLastIndex;\n\nvar aTypedArray = ArrayBufferViewCore.aTypedArray;\nvar exportTypedArrayMethod = ArrayBufferViewCore.exportTypedArrayMethod;\n\n// `%TypedArray%.prototype.findLastIndex` method\n// https://tc39.es/ecma262/#sec-%typedarray%.prototype.findlastindex\nexportTypedArrayMethod('findLastIndex', function findLastIndex(predicate /* , thisArg */) {\n return $findLastIndex(aTypedArray(this), predicate, arguments.length > 1 ? arguments[1] : undefined);\n});\n", "'use strict';\nvar ArrayBufferViewCore = require('../internals/array-buffer-view-core');\nvar $forEach = require('../internals/array-iteration').forEach;\n\nvar aTypedArray = ArrayBufferViewCore.aTypedArray;\nvar exportTypedArrayMethod = ArrayBufferViewCore.exportTypedArrayMethod;\n\n// `%TypedArray%.prototype.forEach` method\n// https://tc39.es/ecma262/#sec-%typedarray%.prototype.foreach\nexportTypedArrayMethod('forEach', function forEach(callbackfn /* , thisArg */) {\n $forEach(aTypedArray(this), callbackfn, arguments.length > 1 ? arguments[1] : undefined);\n});\n", "'use strict';\nvar TYPED_ARRAYS_CONSTRUCTORS_REQUIRES_WRAPPERS = require('../internals/typed-array-constructors-require-wrappers');\nvar exportTypedArrayStaticMethod = require('../internals/array-buffer-view-core').exportTypedArrayStaticMethod;\nvar typedArrayFrom = require('../internals/typed-array-from');\n\n// `%TypedArray%.from` method\n// https://tc39.es/ecma262/#sec-%typedarray%.from\nexportTypedArrayStaticMethod('from', typedArrayFrom, TYPED_ARRAYS_CONSTRUCTORS_REQUIRES_WRAPPERS);\n", "'use strict';\nvar ArrayBufferViewCore = require('../internals/array-buffer-view-core');\nvar $includes = require('../internals/array-includes').includes;\n\nvar aTypedArray = ArrayBufferViewCore.aTypedArray;\nvar exportTypedArrayMethod = ArrayBufferViewCore.exportTypedArrayMethod;\n\n// `%TypedArray%.prototype.includes` method\n// https://tc39.es/ecma262/#sec-%typedarray%.prototype.includes\nexportTypedArrayMethod('includes', function includes(searchElement /* , fromIndex */) {\n return $includes(aTypedArray(this), searchElement, arguments.length > 1 ? arguments[1] : undefined);\n});\n", "'use strict';\nvar ArrayBufferViewCore = require('../internals/array-buffer-view-core');\nvar $indexOf = require('../internals/array-includes').indexOf;\n\nvar aTypedArray = ArrayBufferViewCore.aTypedArray;\nvar exportTypedArrayMethod = ArrayBufferViewCore.exportTypedArrayMethod;\n\n// `%TypedArray%.prototype.indexOf` method\n// https://tc39.es/ecma262/#sec-%typedarray%.prototype.indexof\nexportTypedArrayMethod('indexOf', function indexOf(searchElement /* , fromIndex */) {\n return $indexOf(aTypedArray(this), searchElement, arguments.length > 1 ? arguments[1] : undefined);\n});\n", "'use strict';\nvar globalThis = require('../internals/global-this');\nvar fails = require('../internals/fails');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar ArrayBufferViewCore = require('../internals/array-buffer-view-core');\nvar ArrayIterators = require('../modules/es.array.iterator');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\n\nvar ITERATOR = wellKnownSymbol('iterator');\nvar Uint8Array = globalThis.Uint8Array;\nvar arrayValues = uncurryThis(ArrayIterators.values);\nvar arrayKeys = uncurryThis(ArrayIterators.keys);\nvar arrayEntries = uncurryThis(ArrayIterators.entries);\nvar aTypedArray = ArrayBufferViewCore.aTypedArray;\nvar exportTypedArrayMethod = ArrayBufferViewCore.exportTypedArrayMethod;\nvar TypedArrayPrototype = Uint8Array && Uint8Array.prototype;\n\nvar GENERIC = !fails(function () {\n TypedArrayPrototype[ITERATOR].call([1]);\n});\n\nvar ITERATOR_IS_VALUES = !!TypedArrayPrototype\n && TypedArrayPrototype.values\n && TypedArrayPrototype[ITERATOR] === TypedArrayPrototype.values\n && TypedArrayPrototype.values.name === 'values';\n\nvar typedArrayValues = function values() {\n return arrayValues(aTypedArray(this));\n};\n\n// `%TypedArray%.prototype.entries` method\n// https://tc39.es/ecma262/#sec-%typedarray%.prototype.entries\nexportTypedArrayMethod('entries', function entries() {\n return arrayEntries(aTypedArray(this));\n}, GENERIC);\n// `%TypedArray%.prototype.keys` method\n// https://tc39.es/ecma262/#sec-%typedarray%.prototype.keys\nexportTypedArrayMethod('keys', function keys() {\n return arrayKeys(aTypedArray(this));\n}, GENERIC);\n// `%TypedArray%.prototype.values` method\n// https://tc39.es/ecma262/#sec-%typedarray%.prototype.values\nexportTypedArrayMethod('values', typedArrayValues, GENERIC || !ITERATOR_IS_VALUES, { name: 'values' });\n// `%TypedArray%.prototype[@@iterator]` method\n// https://tc39.es/ecma262/#sec-%typedarray%.prototype-@@iterator\nexportTypedArrayMethod(ITERATOR, typedArrayValues, GENERIC || !ITERATOR_IS_VALUES, { name: 'values' });\n", "'use strict';\nvar ArrayBufferViewCore = require('../internals/array-buffer-view-core');\nvar uncurryThis = require('../internals/function-uncurry-this');\n\nvar aTypedArray = ArrayBufferViewCore.aTypedArray;\nvar exportTypedArrayMethod = ArrayBufferViewCore.exportTypedArrayMethod;\nvar $join = uncurryThis([].join);\n\n// `%TypedArray%.prototype.join` method\n// https://tc39.es/ecma262/#sec-%typedarray%.prototype.join\nexportTypedArrayMethod('join', function join(separator) {\n return $join(aTypedArray(this), separator);\n});\n", "'use strict';\nvar ArrayBufferViewCore = require('../internals/array-buffer-view-core');\nvar apply = require('../internals/function-apply');\nvar $lastIndexOf = require('../internals/array-last-index-of');\n\nvar aTypedArray = ArrayBufferViewCore.aTypedArray;\nvar exportTypedArrayMethod = ArrayBufferViewCore.exportTypedArrayMethod;\n\n// `%TypedArray%.prototype.lastIndexOf` method\n// https://tc39.es/ecma262/#sec-%typedarray%.prototype.lastindexof\nexportTypedArrayMethod('lastIndexOf', function lastIndexOf(searchElement /* , fromIndex */) {\n var length = arguments.length;\n return apply($lastIndexOf, aTypedArray(this), length > 1 ? [searchElement, arguments[1]] : [searchElement]);\n});\n", "'use strict';\nvar ArrayBufferViewCore = require('../internals/array-buffer-view-core');\nvar $map = require('../internals/array-iteration').map;\nvar fromSameTypeAndList = require('../internals/typed-array-from-same-type-and-list');\n\nvar aTypedArray = ArrayBufferViewCore.aTypedArray;\nvar exportTypedArrayMethod = ArrayBufferViewCore.exportTypedArrayMethod;\n\n// `%TypedArray%.prototype.map` method\n// https://tc39.es/ecma262/#sec-%typedarray%.prototype.map\nexportTypedArrayMethod('map', function map(mapfn /* , thisArg */) {\n var list = $map(aTypedArray(this), mapfn, arguments.length > 1 ? arguments[1] : undefined);\n return fromSameTypeAndList(this, list);\n});\n", "'use strict';\nvar ArrayBufferViewCore = require('../internals/array-buffer-view-core');\nvar TYPED_ARRAYS_CONSTRUCTORS_REQUIRES_WRAPPERS = require('../internals/typed-array-constructors-require-wrappers');\n\nvar aTypedArrayConstructor = ArrayBufferViewCore.aTypedArrayConstructor;\nvar exportTypedArrayStaticMethod = ArrayBufferViewCore.exportTypedArrayStaticMethod;\n\n// `%TypedArray%.of` method\n// https://tc39.es/ecma262/#sec-%typedarray%.of\nexportTypedArrayStaticMethod('of', function of(/* ...items */) {\n var index = 0;\n var length = arguments.length;\n var result = new (aTypedArrayConstructor(this))(length);\n while (length > index) result[index] = arguments[index++];\n return result;\n}, TYPED_ARRAYS_CONSTRUCTORS_REQUIRES_WRAPPERS);\n", "'use strict';\nvar ArrayBufferViewCore = require('../internals/array-buffer-view-core');\nvar $reduce = require('../internals/array-reduce').left;\n\nvar aTypedArray = ArrayBufferViewCore.aTypedArray;\nvar exportTypedArrayMethod = ArrayBufferViewCore.exportTypedArrayMethod;\n\n// `%TypedArray%.prototype.reduce` method\n// https://tc39.es/ecma262/#sec-%typedarray%.prototype.reduce\nexportTypedArrayMethod('reduce', function reduce(callbackfn /* , initialValue */) {\n var length = arguments.length;\n return $reduce(aTypedArray(this), callbackfn, length, length > 1 ? arguments[1] : undefined);\n});\n", "'use strict';\nvar ArrayBufferViewCore = require('../internals/array-buffer-view-core');\nvar $reduceRight = require('../internals/array-reduce').right;\n\nvar aTypedArray = ArrayBufferViewCore.aTypedArray;\nvar exportTypedArrayMethod = ArrayBufferViewCore.exportTypedArrayMethod;\n\n// `%TypedArray%.prototype.reduceRight` method\n// https://tc39.es/ecma262/#sec-%typedarray%.prototype.reduceright\nexportTypedArrayMethod('reduceRight', function reduceRight(callbackfn /* , initialValue */) {\n var length = arguments.length;\n return $reduceRight(aTypedArray(this), callbackfn, length, length > 1 ? arguments[1] : undefined);\n});\n", "'use strict';\nvar ArrayBufferViewCore = require('../internals/array-buffer-view-core');\n\nvar aTypedArray = ArrayBufferViewCore.aTypedArray;\nvar exportTypedArrayMethod = ArrayBufferViewCore.exportTypedArrayMethod;\nvar floor = Math.floor;\n\n// `%TypedArray%.prototype.reverse` method\n// https://tc39.es/ecma262/#sec-%typedarray%.prototype.reverse\nexportTypedArrayMethod('reverse', function reverse() {\n var that = this;\n var length = aTypedArray(that).length;\n var middle = floor(length / 2);\n var index = 0;\n var value;\n while (index < middle) {\n value = that[index];\n that[index++] = that[--length];\n that[length] = value;\n } return that;\n});\n", "'use strict';\nvar globalThis = require('../internals/global-this');\nvar call = require('../internals/function-call');\nvar ArrayBufferViewCore = require('../internals/array-buffer-view-core');\nvar lengthOfArrayLike = require('../internals/length-of-array-like');\nvar toOffset = require('../internals/to-offset');\nvar toIndexedObject = require('../internals/to-object');\nvar fails = require('../internals/fails');\n\nvar RangeError = globalThis.RangeError;\nvar Int8Array = globalThis.Int8Array;\nvar Int8ArrayPrototype = Int8Array && Int8Array.prototype;\nvar $set = Int8ArrayPrototype && Int8ArrayPrototype.set;\nvar aTypedArray = ArrayBufferViewCore.aTypedArray;\nvar exportTypedArrayMethod = ArrayBufferViewCore.exportTypedArrayMethod;\n\nvar WORKS_WITH_OBJECTS_AND_GENERIC_ON_TYPED_ARRAYS = !fails(function () {\n // eslint-disable-next-line es/no-typed-arrays -- required for testing\n var array = new Uint8ClampedArray(2);\n call($set, array, { length: 1, 0: 3 }, 1);\n return array[1] !== 3;\n});\n\n// https://bugs.chromium.org/p/v8/issues/detail?id=11294 and other\nvar TO_OBJECT_BUG = WORKS_WITH_OBJECTS_AND_GENERIC_ON_TYPED_ARRAYS && ArrayBufferViewCore.NATIVE_ARRAY_BUFFER_VIEWS && fails(function () {\n var array = new Int8Array(2);\n array.set(1);\n array.set('2', 1);\n return array[0] !== 0 || array[1] !== 2;\n});\n\n// `%TypedArray%.prototype.set` method\n// https://tc39.es/ecma262/#sec-%typedarray%.prototype.set\nexportTypedArrayMethod('set', function set(arrayLike /* , offset */) {\n aTypedArray(this);\n var offset = toOffset(arguments.length > 1 ? arguments[1] : undefined, 1);\n var src = toIndexedObject(arrayLike);\n if (WORKS_WITH_OBJECTS_AND_GENERIC_ON_TYPED_ARRAYS) return call($set, this, src, offset);\n var length = this.length;\n var len = lengthOfArrayLike(src);\n var index = 0;\n if (len + offset > length) throw new RangeError('Wrong length');\n while (index < len) this[offset + index] = src[index++];\n}, !WORKS_WITH_OBJECTS_AND_GENERIC_ON_TYPED_ARRAYS || TO_OBJECT_BUG);\n", "'use strict';\nvar ArrayBufferViewCore = require('../internals/array-buffer-view-core');\nvar fails = require('../internals/fails');\nvar arraySlice = require('../internals/array-slice');\n\nvar aTypedArray = ArrayBufferViewCore.aTypedArray;\nvar getTypedArrayConstructor = ArrayBufferViewCore.getTypedArrayConstructor;\nvar exportTypedArrayMethod = ArrayBufferViewCore.exportTypedArrayMethod;\n\nvar FORCED = fails(function () {\n // eslint-disable-next-line es/no-typed-arrays -- required for testing\n new Int8Array(1).slice();\n});\n\n// `%TypedArray%.prototype.slice` method\n// https://tc39.es/ecma262/#sec-%typedarray%.prototype.slice\nexportTypedArrayMethod('slice', function slice(start, end) {\n var list = arraySlice(aTypedArray(this), start, end);\n var C = getTypedArrayConstructor(this);\n var index = 0;\n var length = list.length;\n var result = new C(length);\n while (length > index) result[index] = list[index++];\n return result;\n}, FORCED);\n", "'use strict';\nvar ArrayBufferViewCore = require('../internals/array-buffer-view-core');\nvar $some = require('../internals/array-iteration').some;\n\nvar aTypedArray = ArrayBufferViewCore.aTypedArray;\nvar exportTypedArrayMethod = ArrayBufferViewCore.exportTypedArrayMethod;\n\n// `%TypedArray%.prototype.some` method\n// https://tc39.es/ecma262/#sec-%typedarray%.prototype.some\nexportTypedArrayMethod('some', function some(callbackfn /* , thisArg */) {\n return $some(aTypedArray(this), callbackfn, arguments.length > 1 ? arguments[1] : undefined);\n});\n", "'use strict';\nvar globalThis = require('../internals/global-this');\nvar uncurryThis = require('../internals/function-uncurry-this-clause');\nvar fails = require('../internals/fails');\nvar aCallable = require('../internals/a-callable');\nvar internalSort = require('../internals/array-sort');\nvar ArrayBufferViewCore = require('../internals/array-buffer-view-core');\nvar FF = require('../internals/environment-ff-version');\nvar IE_OR_EDGE = require('../internals/environment-is-ie-or-edge');\nvar V8 = require('../internals/environment-v8-version');\nvar WEBKIT = require('../internals/environment-webkit-version');\n\nvar aTypedArray = ArrayBufferViewCore.aTypedArray;\nvar exportTypedArrayMethod = ArrayBufferViewCore.exportTypedArrayMethod;\nvar Uint16Array = globalThis.Uint16Array;\nvar nativeSort = Uint16Array && uncurryThis(Uint16Array.prototype.sort);\n\n// WebKit\nvar ACCEPT_INCORRECT_ARGUMENTS = !!nativeSort && !(fails(function () {\n nativeSort(new Uint16Array(2), null);\n}) && fails(function () {\n nativeSort(new Uint16Array(2), {});\n}));\n\nvar STABLE_SORT = !!nativeSort && !fails(function () {\n // feature detection can be too slow, so check engines versions\n if (V8) return V8 < 74;\n if (FF) return FF < 67;\n if (IE_OR_EDGE) return true;\n if (WEBKIT) return WEBKIT < 602;\n\n var array = new Uint16Array(516);\n var expected = Array(516);\n var index, mod;\n\n for (index = 0; index < 516; index++) {\n mod = index % 4;\n array[index] = 515 - index;\n expected[index] = index - 2 * mod + 3;\n }\n\n nativeSort(array, function (a, b) {\n return (a / 4 | 0) - (b / 4 | 0);\n });\n\n for (index = 0; index < 516; index++) {\n if (array[index] !== expected[index]) return true;\n }\n});\n\nvar getSortCompare = function (comparefn) {\n return function (x, y) {\n if (comparefn !== undefined) return +comparefn(x, y) || 0;\n // eslint-disable-next-line no-self-compare -- NaN check\n if (y !== y) return x !== x ? 0 : -1;\n // eslint-disable-next-line no-self-compare -- NaN check\n if (x !== x) return 1;\n if (x === 0 && y === 0) return 1 / x > 0 ? (1 / y > 0 ? 0 : 1) : (1 / y > 0 ? -1 : 0);\n return x > y ? 1 : x < y ? -1 : 0;\n };\n};\n\n// `%TypedArray%.prototype.sort` method\n// https://tc39.es/ecma262/#sec-%typedarray%.prototype.sort\nexportTypedArrayMethod('sort', function sort(comparefn) {\n if (comparefn !== undefined) aCallable(comparefn);\n if (STABLE_SORT) return nativeSort(this, comparefn);\n\n return internalSort(aTypedArray(this), getSortCompare(comparefn));\n}, !STABLE_SORT || ACCEPT_INCORRECT_ARGUMENTS);\n", "'use strict';\nvar ArrayBufferViewCore = require('../internals/array-buffer-view-core');\nvar toLength = require('../internals/to-length');\nvar toAbsoluteIndex = require('../internals/to-absolute-index');\n\nvar aTypedArray = ArrayBufferViewCore.aTypedArray;\nvar getTypedArrayConstructor = ArrayBufferViewCore.getTypedArrayConstructor;\nvar exportTypedArrayMethod = ArrayBufferViewCore.exportTypedArrayMethod;\n\n// `%TypedArray%.prototype.subarray` method\n// https://tc39.es/ecma262/#sec-%typedarray%.prototype.subarray\nexportTypedArrayMethod('subarray', function subarray(begin, end) {\n var O = aTypedArray(this);\n var length = O.length;\n var beginIndex = toAbsoluteIndex(begin, length);\n var C = getTypedArrayConstructor(O);\n return new C(\n O.buffer,\n O.byteOffset + beginIndex * O.BYTES_PER_ELEMENT,\n toLength((end === undefined ? length : toAbsoluteIndex(end, length)) - beginIndex)\n );\n});\n", "'use strict';\nvar globalThis = require('../internals/global-this');\nvar apply = require('../internals/function-apply');\nvar ArrayBufferViewCore = require('../internals/array-buffer-view-core');\nvar fails = require('../internals/fails');\nvar arraySlice = require('../internals/array-slice');\n\nvar Int8Array = globalThis.Int8Array;\nvar aTypedArray = ArrayBufferViewCore.aTypedArray;\nvar exportTypedArrayMethod = ArrayBufferViewCore.exportTypedArrayMethod;\nvar $toLocaleString = [].toLocaleString;\n\n// iOS Safari 6.x fails here\nvar TO_LOCALE_STRING_BUG = !!Int8Array && fails(function () {\n $toLocaleString.call(new Int8Array(1));\n});\n\nvar FORCED = fails(function () {\n return [1, 2].toLocaleString() !== new Int8Array([1, 2]).toLocaleString();\n}) || !fails(function () {\n Int8Array.prototype.toLocaleString.call([1, 2]);\n});\n\n// `%TypedArray%.prototype.toLocaleString` method\n// https://tc39.es/ecma262/#sec-%typedarray%.prototype.tolocalestring\nexportTypedArrayMethod('toLocaleString', function toLocaleString() {\n return apply(\n $toLocaleString,\n TO_LOCALE_STRING_BUG ? arraySlice(aTypedArray(this)) : aTypedArray(this),\n arraySlice(arguments)\n );\n}, FORCED);\n", "'use strict';\nvar lengthOfArrayLike = require('../internals/length-of-array-like');\nvar ArrayBufferViewCore = require('../internals/array-buffer-view-core');\n\nvar aTypedArray = ArrayBufferViewCore.aTypedArray;\nvar exportTypedArrayMethod = ArrayBufferViewCore.exportTypedArrayMethod;\nvar getTypedArrayConstructor = ArrayBufferViewCore.getTypedArrayConstructor;\n\n// `%TypedArray%.prototype.toReversed` method\n// https://tc39.es/ecma262/#sec-%typedarray%.prototype.toreversed\nexportTypedArrayMethod('toReversed', function toReversed() {\n var O = aTypedArray(this);\n var len = lengthOfArrayLike(O);\n var A = new (getTypedArrayConstructor(O))(len);\n var k = 0;\n for (; k < len; k++) A[k] = O[len - k - 1];\n return A;\n});\n", "'use strict';\nvar ArrayBufferViewCore = require('../internals/array-buffer-view-core');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar aCallable = require('../internals/a-callable');\nvar arrayFromConstructorAndList = require('../internals/array-from-constructor-and-list');\n\nvar aTypedArray = ArrayBufferViewCore.aTypedArray;\nvar getTypedArrayConstructor = ArrayBufferViewCore.getTypedArrayConstructor;\nvar exportTypedArrayMethod = ArrayBufferViewCore.exportTypedArrayMethod;\nvar sort = uncurryThis(ArrayBufferViewCore.TypedArrayPrototype.sort);\n\n// `%TypedArray%.prototype.toSorted` method\n// https://tc39.es/ecma262/#sec-%typedarray%.prototype.tosorted\nexportTypedArrayMethod('toSorted', function toSorted(compareFn) {\n if (compareFn !== undefined) aCallable(compareFn);\n var O = aTypedArray(this);\n var A = arrayFromConstructorAndList(getTypedArrayConstructor(O), O);\n return sort(A, compareFn);\n});\n", "'use strict';\nvar exportTypedArrayMethod = require('../internals/array-buffer-view-core').exportTypedArrayMethod;\nvar fails = require('../internals/fails');\nvar globalThis = require('../internals/global-this');\nvar uncurryThis = require('../internals/function-uncurry-this');\n\nvar Uint8Array = globalThis.Uint8Array;\nvar Uint8ArrayPrototype = Uint8Array && Uint8Array.prototype || {};\nvar arrayToString = [].toString;\nvar join = uncurryThis([].join);\n\nif (fails(function () { arrayToString.call({}); })) {\n arrayToString = function toString() {\n return join(this);\n };\n}\n\nvar IS_NOT_ARRAY_METHOD = Uint8ArrayPrototype.toString !== arrayToString;\n\n// `%TypedArray%.prototype.toString` method\n// https://tc39.es/ecma262/#sec-%typedarray%.prototype.tostring\nexportTypedArrayMethod('toString', arrayToString, IS_NOT_ARRAY_METHOD);\n", "'use strict';\nvar ArrayBufferViewCore = require('../internals/array-buffer-view-core');\nvar isBigIntArray = require('../internals/is-big-int-array');\nvar lengthOfArrayLike = require('../internals/length-of-array-like');\nvar toIntegerOrInfinity = require('../internals/to-integer-or-infinity');\nvar toBigInt = require('../internals/to-big-int');\n\nvar aTypedArray = ArrayBufferViewCore.aTypedArray;\nvar getTypedArrayConstructor = ArrayBufferViewCore.getTypedArrayConstructor;\nvar exportTypedArrayMethod = ArrayBufferViewCore.exportTypedArrayMethod;\n\nvar $RangeError = RangeError;\n\nvar PROPER_ORDER = function () {\n try {\n // eslint-disable-next-line no-throw-literal, es/no-typed-arrays, es/no-array-prototype-with -- required for testing\n new Int8Array(1)['with'](2, { valueOf: function () { throw 8; } });\n } catch (error) {\n // some early implementations, like WebKit, does not follow the final semantic\n // https://github.com/tc39/proposal-change-array-by-copy/pull/86\n return error === 8;\n }\n}();\n\n// Bug in WebKit. It should truncate a negative fractional index to zero, but instead throws an error\nvar THROW_ON_NEGATIVE_FRACTIONAL_INDEX = PROPER_ORDER && function () {\n try {\n // eslint-disable-next-line es/no-typed-arrays, es/no-array-prototype-with -- required for testing\n new Int8Array(1)['with'](-0.5, 1);\n } catch (error) {\n return true;\n }\n}();\n\n// `%TypedArray%.prototype.with` method\n// https://tc39.es/ecma262/#sec-%typedarray%.prototype.with\nexportTypedArrayMethod('with', { 'with': function (index, value) {\n var O = aTypedArray(this);\n var len = lengthOfArrayLike(O);\n var relativeIndex = toIntegerOrInfinity(index);\n var actualIndex = relativeIndex < 0 ? len + relativeIndex : relativeIndex;\n var numericValue = isBigIntArray(O) ? toBigInt(value) : +value;\n if (actualIndex >= len || actualIndex < 0) throw new $RangeError('Incorrect index');\n var A = new (getTypedArrayConstructor(O))(len);\n var k = 0;\n for (; k < len; k++) A[k] = k === actualIndex ? numericValue : O[k];\n return A;\n} }['with'], !PROPER_ORDER || THROW_ON_NEGATIVE_FRACTIONAL_INDEX);\n", "'use strict';\nvar isObject = require('../internals/is-object');\n\nvar $String = String;\nvar $TypeError = TypeError;\n\nmodule.exports = function (argument) {\n if (argument === undefined || isObject(argument)) return argument;\n throw new $TypeError($String(argument) + ' is not an object or undefined');\n};\n", "'use strict';\nvar commonAlphabet = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';\nvar base64Alphabet = commonAlphabet + '+/';\nvar base64UrlAlphabet = commonAlphabet + '-_';\n\nvar inverse = function (characters) {\n // TODO: use `Object.create(null)` in `core-js@4`\n var result = {};\n var index = 0;\n for (; index < 64; index++) result[characters.charAt(index)] = index;\n return result;\n};\n\nmodule.exports = {\n i2c: base64Alphabet,\n c2i: inverse(base64Alphabet),\n i2cUrl: base64UrlAlphabet,\n c2iUrl: inverse(base64UrlAlphabet)\n};\n", "'use strict';\nvar $TypeError = TypeError;\n\nmodule.exports = function (options) {\n var alphabet = options && options.alphabet;\n if (alphabet === undefined || alphabet === 'base64' || alphabet === 'base64url') return alphabet || 'base64';\n throw new $TypeError('Incorrect `alphabet` option');\n};\n", "'use strict';\nvar globalThis = require('../internals/global-this');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar anObjectOrUndefined = require('../internals/an-object-or-undefined');\nvar aString = require('../internals/a-string');\nvar hasOwn = require('../internals/has-own-property');\nvar base64Map = require('../internals/base64-map');\nvar getAlphabetOption = require('../internals/get-alphabet-option');\nvar notDetached = require('../internals/array-buffer-not-detached');\n\nvar base64Alphabet = base64Map.c2i;\nvar base64UrlAlphabet = base64Map.c2iUrl;\n\nvar SyntaxError = globalThis.SyntaxError;\nvar TypeError = globalThis.TypeError;\nvar at = uncurryThis(''.charAt);\n\nvar skipAsciiWhitespace = function (string, index) {\n var length = string.length;\n for (;index < length; index++) {\n var chr = at(string, index);\n if (chr !== ' ' && chr !== '\\t' && chr !== '\\n' && chr !== '\\f' && chr !== '\\r') break;\n } return index;\n};\n\nvar decodeBase64Chunk = function (chunk, alphabet, throwOnExtraBits) {\n var chunkLength = chunk.length;\n\n if (chunkLength < 4) {\n chunk += chunkLength === 2 ? 'AA' : 'A';\n }\n\n var triplet = (alphabet[at(chunk, 0)] << 18)\n + (alphabet[at(chunk, 1)] << 12)\n + (alphabet[at(chunk, 2)] << 6)\n + alphabet[at(chunk, 3)];\n\n var chunkBytes = [\n (triplet >> 16) & 255,\n (triplet >> 8) & 255,\n triplet & 255\n ];\n\n if (chunkLength === 2) {\n if (throwOnExtraBits && chunkBytes[1] !== 0) {\n throw new SyntaxError('Extra bits');\n }\n return [chunkBytes[0]];\n }\n\n if (chunkLength === 3) {\n if (throwOnExtraBits && chunkBytes[2] !== 0) {\n throw new SyntaxError('Extra bits');\n }\n return [chunkBytes[0], chunkBytes[1]];\n }\n\n return chunkBytes;\n};\n\nvar writeBytes = function (bytes, elements, written) {\n var elementsLength = elements.length;\n for (var index = 0; index < elementsLength; index++) {\n bytes[written + index] = elements[index];\n }\n return written + elementsLength;\n};\n\n/* eslint-disable max-statements, max-depth -- TODO */\nmodule.exports = function (string, options, into, maxLength) {\n aString(string);\n anObjectOrUndefined(options);\n var alphabet = getAlphabetOption(options) === 'base64' ? base64Alphabet : base64UrlAlphabet;\n var lastChunkHandling = options ? options.lastChunkHandling : undefined;\n\n if (lastChunkHandling === undefined) lastChunkHandling = 'loose';\n\n if (lastChunkHandling !== 'loose' && lastChunkHandling !== 'strict' && lastChunkHandling !== 'stop-before-partial') {\n throw new TypeError('Incorrect `lastChunkHandling` option');\n }\n\n if (into) notDetached(into.buffer);\n\n var stringLength = string.length;\n var bytes = into || [];\n var written = 0;\n var read = 0;\n var chunk = '';\n var index = 0;\n\n if (maxLength) while (true) {\n index = skipAsciiWhitespace(string, index);\n if (index === stringLength) {\n if (chunk.length > 0) {\n if (lastChunkHandling === 'stop-before-partial') {\n break;\n }\n if (lastChunkHandling === 'loose') {\n if (chunk.length === 1) {\n throw new SyntaxError('Malformed padding: exactly one additional character');\n }\n written = writeBytes(bytes, decodeBase64Chunk(chunk, alphabet, false), written);\n } else {\n throw new SyntaxError('Missing padding');\n }\n }\n read = stringLength;\n break;\n }\n var chr = at(string, index);\n ++index;\n if (chr === '=') {\n if (chunk.length < 2) {\n throw new SyntaxError('Padding is too early');\n }\n index = skipAsciiWhitespace(string, index);\n if (chunk.length === 2) {\n if (index === stringLength) {\n if (lastChunkHandling === 'stop-before-partial') {\n break;\n }\n throw new SyntaxError('Malformed padding: only one =');\n }\n if (at(string, index) === '=') {\n ++index;\n index = skipAsciiWhitespace(string, index);\n }\n }\n if (index < stringLength) {\n throw new SyntaxError('Unexpected character after padding');\n }\n written = writeBytes(bytes, decodeBase64Chunk(chunk, alphabet, lastChunkHandling === 'strict'), written);\n read = stringLength;\n break;\n }\n if (!hasOwn(alphabet, chr)) {\n throw new SyntaxError('Unexpected character');\n }\n var remainingBytes = maxLength - written;\n if (remainingBytes === 1 && chunk.length === 2 || remainingBytes === 2 && chunk.length === 3) {\n // special case: we can fit exactly the number of bytes currently represented by chunk, so we were just checking for `=`\n break;\n }\n\n chunk += chr;\n if (chunk.length === 4) {\n written = writeBytes(bytes, decodeBase64Chunk(chunk, alphabet, false), written);\n chunk = '';\n read = index;\n if (written === maxLength) {\n break;\n }\n }\n }\n\n return { bytes: bytes, read: read, written: written };\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar globalThis = require('../internals/global-this');\nvar arrayFromConstructorAndList = require('../internals/array-from-constructor-and-list');\nvar $fromBase64 = require('../internals/uint8-from-base64');\n\nvar Uint8Array = globalThis.Uint8Array;\n\nvar INCORRECT_BEHAVIOR_OR_DOESNT_EXISTS = !Uint8Array || !Uint8Array.fromBase64 || !function () {\n // Webkit not throw an error on odd length string\n try {\n Uint8Array.fromBase64('a');\n return;\n } catch (error) { /* empty */ }\n try {\n Uint8Array.fromBase64('', null);\n } catch (error) {\n return true;\n }\n}();\n\n// `Uint8Array.fromBase64` method\n// https://tc39.es/ecma262/#sec-uint8array.frombase64\nif (Uint8Array) $({ target: 'Uint8Array', stat: true, forced: INCORRECT_BEHAVIOR_OR_DOESNT_EXISTS }, {\n fromBase64: function fromBase64(string /* , options */) {\n var result = $fromBase64(string, arguments.length > 1 ? arguments[1] : undefined, null, 0x1FFFFFFFFFFFFF);\n return arrayFromConstructorAndList(Uint8Array, result.bytes);\n }\n});\n", "'use strict';\nvar globalThis = require('../internals/global-this');\nvar uncurryThis = require('../internals/function-uncurry-this');\n\nvar Uint8Array = globalThis.Uint8Array;\nvar SyntaxError = globalThis.SyntaxError;\nvar min = Math.min;\nvar stringMatch = uncurryThis(''.match);\n\nmodule.exports = function (string, into) {\n var stringLength = string.length;\n if (stringLength % 2 !== 0) throw new SyntaxError('String should be an even number of characters');\n var maxLength = into ? min(into.length, stringLength / 2) : stringLength / 2;\n var bytes = into || new Uint8Array(maxLength);\n var segments = stringMatch(string, /.{2}/g);\n var written = 0;\n for (; written < maxLength; written++) {\n var result = +('0x' + segments[written] + '0');\n // eslint-disable-next-line no-self-compare -- NaN check\n if (result !== result) {\n throw new SyntaxError('String should only contain hex characters');\n }\n bytes[written] = result >> 4;\n }\n return { bytes: bytes, read: written << 1 };\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar globalThis = require('../internals/global-this');\nvar aString = require('../internals/a-string');\nvar $fromHex = require('../internals/uint8-from-hex');\n\n// `Uint8Array.fromHex` method\n// https://tc39.es/ecma262/#sec-uint8array.fromhex\nif (globalThis.Uint8Array) $({ target: 'Uint8Array', stat: true }, {\n fromHex: function fromHex(string) {\n return $fromHex(aString(string)).bytes;\n }\n});\n", "'use strict';\nvar classof = require('../internals/classof');\n\nvar $TypeError = TypeError;\n\n// Perform ? RequireInternalSlot(argument, [[TypedArrayName]])\n// If argument.[[TypedArrayName]] is not \"Uint8Array\", throw a TypeError exception\nmodule.exports = function (argument) {\n if (classof(argument) === 'Uint8Array') return argument;\n throw new $TypeError('Argument is not an Uint8Array');\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar globalThis = require('../internals/global-this');\nvar $fromBase64 = require('../internals/uint8-from-base64');\nvar anUint8Array = require('../internals/an-uint8-array');\n\nvar Uint8Array = globalThis.Uint8Array;\n\nvar INCORRECT_BEHAVIOR_OR_DOESNT_EXISTS = !Uint8Array || !Uint8Array.prototype.setFromBase64 || !function () {\n var target = new Uint8Array([255, 255, 255, 255, 255]);\n try {\n target.setFromBase64('', null);\n return;\n } catch (error) { /* empty */ }\n // Webkit not throw an error on odd length string\n try {\n target.setFromBase64('a');\n return;\n } catch (error) { /* empty */ }\n try {\n target.setFromBase64('MjYyZg===');\n } catch (error) {\n return target[0] === 50 && target[1] === 54 && target[2] === 50 && target[3] === 255 && target[4] === 255;\n }\n}();\n\n// `Uint8Array.prototype.setFromBase64` method\n// https://tc39.es/ecma262/#sec-uint8array.prototype.setfrombase64\nif (Uint8Array) $({ target: 'Uint8Array', proto: true, forced: INCORRECT_BEHAVIOR_OR_DOESNT_EXISTS }, {\n setFromBase64: function setFromBase64(string /* , options */) {\n anUint8Array(this);\n\n var result = $fromBase64(string, arguments.length > 1 ? arguments[1] : undefined, this, this.length);\n\n return { read: result.read, written: result.written };\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar globalThis = require('../internals/global-this');\nvar aString = require('../internals/a-string');\nvar anUint8Array = require('../internals/an-uint8-array');\nvar notDetached = require('../internals/array-buffer-not-detached');\nvar $fromHex = require('../internals/uint8-from-hex');\n\n// Should not throw an error on length-tracking views over ResizableArrayBuffer\n// https://issues.chromium.org/issues/454630441\nfunction throwsOnLengthTrackingView() {\n try {\n // eslint-disable-next-line es/no-resizable-and-growable-arraybuffers -- required for testing\n var rab = new ArrayBuffer(16, { maxByteLength: 1024 });\n // eslint-disable-next-line es/no-uint8array-prototype-setfromhex, es/no-typed-arrays -- required for testing\n new Uint8Array(rab).setFromHex('cafed00d');\n } catch (error) {\n return true;\n }\n}\n\n// `Uint8Array.prototype.setFromHex` method\n// https://tc39.es/ecma262/#sec-uint8array.prototype.setfromhex\nif (globalThis.Uint8Array) $({ target: 'Uint8Array', proto: true, forced: throwsOnLengthTrackingView() }, {\n setFromHex: function setFromHex(string) {\n anUint8Array(this);\n aString(string);\n notDetached(this.buffer);\n var read = $fromHex(string, this).read;\n return { read: read, written: read / 2 };\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar globalThis = require('../internals/global-this');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar anObjectOrUndefined = require('../internals/an-object-or-undefined');\nvar anUint8Array = require('../internals/an-uint8-array');\nvar notDetached = require('../internals/array-buffer-not-detached');\nvar base64Map = require('../internals/base64-map');\nvar getAlphabetOption = require('../internals/get-alphabet-option');\n\nvar base64Alphabet = base64Map.i2c;\nvar base64UrlAlphabet = base64Map.i2cUrl;\n\nvar charAt = uncurryThis(''.charAt);\n\nvar Uint8Array = globalThis.Uint8Array;\n\nvar INCORRECT_BEHAVIOR_OR_DOESNT_EXISTS = !Uint8Array || !Uint8Array.prototype.toBase64 || !function () {\n try {\n var target = new Uint8Array();\n target.toBase64(null);\n } catch (error) {\n return true;\n }\n}();\n\n// `Uint8Array.prototype.toBase64` method\n// https://tc39.es/ecma262/#sec-uint8array.prototype.tobase64\nif (Uint8Array) $({ target: 'Uint8Array', proto: true, forced: INCORRECT_BEHAVIOR_OR_DOESNT_EXISTS }, {\n toBase64: function toBase64(/* options */) {\n var array = anUint8Array(this);\n var options = arguments.length ? anObjectOrUndefined(arguments[0]) : undefined;\n var alphabet = getAlphabetOption(options) === 'base64' ? base64Alphabet : base64UrlAlphabet;\n var omitPadding = !!options && !!options.omitPadding;\n notDetached(this.buffer);\n\n var result = '';\n var i = 0;\n var length = array.length;\n var triplet;\n\n var at = function (shift) {\n return charAt(alphabet, (triplet >> (6 * shift)) & 63);\n };\n\n for (; i + 2 < length; i += 3) {\n triplet = (array[i] << 16) + (array[i + 1] << 8) + array[i + 2];\n result += at(3) + at(2) + at(1) + at(0);\n }\n if (i + 2 === length) {\n triplet = (array[i] << 16) + (array[i + 1] << 8);\n result += at(3) + at(2) + at(1) + (omitPadding ? '' : '=');\n } else if (i + 1 === length) {\n triplet = array[i] << 16;\n result += at(3) + at(2) + (omitPadding ? '' : '==');\n }\n\n return result;\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar globalThis = require('../internals/global-this');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar anUint8Array = require('../internals/an-uint8-array');\nvar notDetached = require('../internals/array-buffer-not-detached');\n\nvar numberToString = uncurryThis(1.1.toString);\nvar join = uncurryThis([].join);\nvar $Array = Array;\n\nvar Uint8Array = globalThis.Uint8Array;\n\nvar INCORRECT_BEHAVIOR_OR_DOESNT_EXISTS = !Uint8Array || !Uint8Array.prototype.toHex || !(function () {\n try {\n var target = new Uint8Array([255, 255, 255, 255, 255, 255, 255, 255]);\n return target.toHex() === 'ffffffffffffffff';\n } catch (error) {\n return false;\n }\n})();\n\n// `Uint8Array.prototype.toHex` method\n// https://tc39.es/ecma262/#sec-uint8array.prototype.tohex\nif (Uint8Array) $({ target: 'Uint8Array', proto: true, forced: INCORRECT_BEHAVIOR_OR_DOESNT_EXISTS }, {\n toHex: function toHex() {\n anUint8Array(this);\n notDetached(this.buffer);\n var result = $Array(this.length);\n for (var i = 0, length = this.length; i < length; i++) {\n var hex = numberToString(this[i], 16);\n result[i] = hex.length === 1 ? '0' + hex : hex;\n }\n return join(result, '');\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar toString = require('../internals/to-string');\n\nvar fromCharCode = String.fromCharCode;\nvar charAt = uncurryThis(''.charAt);\nvar exec = uncurryThis(/./.exec);\nvar stringSlice = uncurryThis(''.slice);\n\nvar hex2 = /^[\\da-f]{2}$/i;\nvar hex4 = /^[\\da-f]{4}$/i;\n\n// `unescape` method\n// https://tc39.es/ecma262/#sec-unescape-string\n$({ global: true }, {\n unescape: function unescape(string) {\n var str = toString(string);\n var result = '';\n var length = str.length;\n var index = 0;\n var chr, part;\n while (index < length) {\n chr = charAt(str, index++);\n if (chr === '%') {\n if (charAt(str, index) === 'u') {\n part = stringSlice(str, index + 1, index + 5);\n if (exec(hex4, part)) {\n result += fromCharCode(parseInt(part, 16));\n index += 5;\n continue;\n }\n } else {\n part = stringSlice(str, index, index + 2);\n if (exec(hex2, part)) {\n result += fromCharCode(parseInt(part, 16));\n index += 2;\n continue;\n }\n }\n }\n result += chr;\n } return result;\n }\n});\n", "'use strict';\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar defineBuiltIns = require('../internals/define-built-ins');\nvar getWeakData = require('../internals/internal-metadata').getWeakData;\nvar anInstance = require('../internals/an-instance');\nvar anObject = require('../internals/an-object');\nvar isNullOrUndefined = require('../internals/is-null-or-undefined');\nvar isObject = require('../internals/is-object');\nvar iterate = require('../internals/iterate');\nvar ArrayIterationModule = require('../internals/array-iteration');\nvar hasOwn = require('../internals/has-own-property');\nvar InternalStateModule = require('../internals/internal-state');\n\nvar setInternalState = InternalStateModule.set;\nvar internalStateGetterFor = InternalStateModule.getterFor;\nvar find = ArrayIterationModule.find;\nvar findIndex = ArrayIterationModule.findIndex;\nvar splice = uncurryThis([].splice);\nvar id = 0;\n\n// fallback for uncaught frozen keys\nvar uncaughtFrozenStore = function (state) {\n return state.frozen || (state.frozen = new UncaughtFrozenStore());\n};\n\nvar UncaughtFrozenStore = function () {\n this.entries = [];\n};\n\nvar findUncaughtFrozen = function (store, key) {\n return find(store.entries, function (it) {\n return it[0] === key;\n });\n};\n\nUncaughtFrozenStore.prototype = {\n get: function (key) {\n var entry = findUncaughtFrozen(this, key);\n if (entry) return entry[1];\n },\n has: function (key) {\n return !!findUncaughtFrozen(this, key);\n },\n set: function (key, value) {\n var entry = findUncaughtFrozen(this, key);\n if (entry) entry[1] = value;\n else this.entries.push([key, value]);\n },\n 'delete': function (key) {\n var index = findIndex(this.entries, function (it) {\n return it[0] === key;\n });\n if (~index) splice(this.entries, index, 1);\n return !!~index;\n }\n};\n\nmodule.exports = {\n getConstructor: function (wrapper, CONSTRUCTOR_NAME, IS_MAP, ADDER) {\n var Constructor = wrapper(function (that, iterable) {\n anInstance(that, Prototype);\n setInternalState(that, {\n type: CONSTRUCTOR_NAME,\n id: id++,\n frozen: null\n });\n if (!isNullOrUndefined(iterable)) iterate(iterable, that[ADDER], { that: that, AS_ENTRIES: IS_MAP });\n });\n\n var Prototype = Constructor.prototype;\n\n var getInternalState = internalStateGetterFor(CONSTRUCTOR_NAME);\n\n var define = function (that, key, value) {\n var state = getInternalState(that);\n var data = getWeakData(anObject(key), true);\n if (data === true) uncaughtFrozenStore(state).set(key, value);\n else data[state.id] = value;\n return that;\n };\n\n defineBuiltIns(Prototype, {\n // `{ WeakMap, WeakSet }.prototype.delete(key)` methods\n // https://tc39.es/ecma262/#sec-weakmap.prototype.delete\n // https://tc39.es/ecma262/#sec-weakset.prototype.delete\n 'delete': function (key) {\n var state = getInternalState(this);\n if (!isObject(key)) return false;\n var data = getWeakData(key);\n if (data === true) return uncaughtFrozenStore(state)['delete'](key);\n return data && hasOwn(data, state.id) && delete data[state.id];\n },\n // `{ WeakMap, WeakSet }.prototype.has(key)` methods\n // https://tc39.es/ecma262/#sec-weakmap.prototype.has\n // https://tc39.es/ecma262/#sec-weakset.prototype.has\n has: function has(key) {\n var state = getInternalState(this);\n if (!isObject(key)) return false;\n var data = getWeakData(key);\n if (data === true) return uncaughtFrozenStore(state).has(key);\n return data && hasOwn(data, state.id);\n }\n });\n\n defineBuiltIns(Prototype, IS_MAP ? {\n // `WeakMap.prototype.get(key)` method\n // https://tc39.es/ecma262/#sec-weakmap.prototype.get\n get: function get(key) {\n var state = getInternalState(this);\n if (isObject(key)) {\n var data = getWeakData(key);\n if (data === true) return uncaughtFrozenStore(state).get(key);\n if (data) return data[state.id];\n }\n },\n // `WeakMap.prototype.set(key, value)` method\n // https://tc39.es/ecma262/#sec-weakmap.prototype.set\n set: function set(key, value) {\n return define(this, key, value);\n }\n } : {\n // `WeakSet.prototype.add(value)` method\n // https://tc39.es/ecma262/#sec-weakset.prototype.add\n add: function add(value) {\n return define(this, value, true);\n }\n });\n\n return Constructor;\n }\n};\n", "'use strict';\nvar FREEZING = require('../internals/freezing');\nvar globalThis = require('../internals/global-this');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar defineBuiltIns = require('../internals/define-built-ins');\nvar InternalMetadataModule = require('../internals/internal-metadata');\nvar collection = require('../internals/collection');\nvar collectionWeak = require('../internals/collection-weak');\nvar isObject = require('../internals/is-object');\nvar enforceInternalState = require('../internals/internal-state').enforce;\nvar fails = require('../internals/fails');\nvar NATIVE_WEAK_MAP = require('../internals/weak-map-basic-detection');\n\nvar $Object = Object;\n// eslint-disable-next-line es/no-array-isarray -- safe\nvar isArray = Array.isArray;\n// eslint-disable-next-line es/no-object-isextensible -- safe\nvar isExtensible = $Object.isExtensible;\n// eslint-disable-next-line es/no-object-isfrozen -- safe\nvar isFrozen = $Object.isFrozen;\n// eslint-disable-next-line es/no-object-issealed -- safe\nvar isSealed = $Object.isSealed;\n// eslint-disable-next-line es/no-object-freeze -- safe\nvar freeze = $Object.freeze;\n// eslint-disable-next-line es/no-object-seal -- safe\nvar seal = $Object.seal;\n\nvar IS_IE11 = !globalThis.ActiveXObject && 'ActiveXObject' in globalThis;\nvar InternalWeakMap;\n\nvar wrapper = function (init) {\n return function WeakMap() {\n return init(this, arguments.length ? arguments[0] : undefined);\n };\n};\n\n// `WeakMap` constructor\n// https://tc39.es/ecma262/#sec-weakmap-constructor\nvar $WeakMap = collection('WeakMap', wrapper, collectionWeak);\nvar WeakMapPrototype = $WeakMap.prototype;\nvar nativeSet = uncurryThis(WeakMapPrototype.set);\n\n// Chakra Edge bug: adding frozen arrays to WeakMap unfreeze them\nvar hasMSEdgeFreezingBug = function () {\n return FREEZING && fails(function () {\n var frozenArray = freeze([]);\n nativeSet(new $WeakMap(), frozenArray, 1);\n return !isFrozen(frozenArray);\n });\n};\n\n// IE11 WeakMap frozen keys fix\n// We can't use feature detection because it crash some old IE builds\n// https://github.com/zloirock/core-js/issues/485\nif (NATIVE_WEAK_MAP) if (IS_IE11) {\n InternalWeakMap = collectionWeak.getConstructor(wrapper, 'WeakMap', true);\n InternalMetadataModule.enable();\n var nativeDelete = uncurryThis(WeakMapPrototype['delete']);\n var nativeHas = uncurryThis(WeakMapPrototype.has);\n var nativeGet = uncurryThis(WeakMapPrototype.get);\n defineBuiltIns(WeakMapPrototype, {\n 'delete': function (key) {\n if (isObject(key) && !isExtensible(key)) {\n var state = enforceInternalState(this);\n if (!state.frozen) state.frozen = new InternalWeakMap();\n return nativeDelete(this, key) || state.frozen['delete'](key);\n } return nativeDelete(this, key);\n },\n has: function has(key) {\n if (isObject(key) && !isExtensible(key)) {\n var state = enforceInternalState(this);\n if (!state.frozen) state.frozen = new InternalWeakMap();\n return nativeHas(this, key) || state.frozen.has(key);\n } return nativeHas(this, key);\n },\n get: function get(key) {\n if (isObject(key) && !isExtensible(key)) {\n var state = enforceInternalState(this);\n if (!state.frozen) state.frozen = new InternalWeakMap();\n return nativeHas(this, key) ? nativeGet(this, key) : state.frozen.get(key);\n } return nativeGet(this, key);\n },\n set: function set(key, value) {\n if (isObject(key) && !isExtensible(key)) {\n var state = enforceInternalState(this);\n if (!state.frozen) state.frozen = new InternalWeakMap();\n nativeHas(this, key) ? nativeSet(this, key, value) : state.frozen.set(key, value);\n } else nativeSet(this, key, value);\n return this;\n }\n });\n// Chakra Edge frozen keys fix\n} else if (hasMSEdgeFreezingBug()) {\n defineBuiltIns(WeakMapPrototype, {\n set: function set(key, value) {\n var arrayIntegrityLevel;\n if (isArray(key)) {\n if (isFrozen(key)) arrayIntegrityLevel = freeze;\n else if (isSealed(key)) arrayIntegrityLevel = seal;\n }\n nativeSet(this, key, value);\n if (arrayIntegrityLevel) arrayIntegrityLevel(key);\n return this;\n }\n });\n}\n", "'use strict';\n// TODO: Remove this module from `core-js@4` since it's replaced to module below\nrequire('../modules/es.weak-map.constructor');\n", "'use strict';\nvar uncurryThis = require('../internals/function-uncurry-this');\n\n// eslint-disable-next-line es/no-weak-map -- safe\nvar WeakMapPrototype = WeakMap.prototype;\n\nmodule.exports = {\n // eslint-disable-next-line es/no-weak-map -- safe\n WeakMap: WeakMap,\n set: uncurryThis(WeakMapPrototype.set),\n get: uncurryThis(WeakMapPrototype.get),\n has: uncurryThis(WeakMapPrototype.has),\n remove: uncurryThis(WeakMapPrototype['delete'])\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar WeakMapHelpers = require('../internals/weak-map-helpers');\nvar IS_PURE = require('../internals/is-pure');\n\nvar get = WeakMapHelpers.get;\nvar has = WeakMapHelpers.has;\nvar set = WeakMapHelpers.set;\n\n// `WeakMap.prototype.getOrInsert` method\n// https://tc39.es/ecma262/#sec-weakmap.prototype.getorinsert\n$({ target: 'WeakMap', proto: true, real: true, forced: IS_PURE }, {\n getOrInsert: function getOrInsert(key, value) {\n if (has(this, key)) return get(this, key);\n set(this, key, value);\n return value;\n }\n});\n", "'use strict';\nvar has = require('../internals/weak-map-helpers').has;\n\n// Perform ? RequireInternalSlot(M, [[WeakMapData]])\nmodule.exports = function (it) {\n has(it);\n return it;\n};\n", "'use strict';\nvar WeakMapHelpers = require('../internals/weak-map-helpers');\n\nvar weakmap = new WeakMapHelpers.WeakMap();\nvar set = WeakMapHelpers.set;\nvar remove = WeakMapHelpers.remove;\n\nmodule.exports = function (key) {\n set(weakmap, key, 1);\n remove(weakmap, key);\n return key;\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar aCallable = require('../internals/a-callable');\nvar aWeakMap = require('../internals/a-weak-map');\nvar aWeakKey = require('../internals/a-weak-key');\nvar WeakMapHelpers = require('../internals/weak-map-helpers');\nvar IS_PURE = require('../internals/is-pure');\n\nvar get = WeakMapHelpers.get;\nvar has = WeakMapHelpers.has;\nvar set = WeakMapHelpers.set;\n\nvar FORCED = IS_PURE || !function () {\n try {\n // eslint-disable-next-line es/no-weak-map, no-throw-literal -- testing\n if (WeakMap.prototype.getOrInsertComputed) new WeakMap().getOrInsertComputed(1, function () { throw 1; });\n } catch (error) {\n // FF144 Nightly - Beta 3 bug\n // https://bugzilla.mozilla.org/show_bug.cgi?id=1988369\n return error instanceof TypeError;\n }\n}();\n\n// `WeakMap.prototype.getOrInsertComputed` method\n// https://tc39.es/ecma262/#sec-weakmap.prototype.getorinsertcomputed\n$({ target: 'WeakMap', proto: true, real: true, forced: FORCED }, {\n getOrInsertComputed: function getOrInsertComputed(key, callbackfn) {\n if (!IS_PURE) aWeakMap(this);\n aWeakKey(key);\n aCallable(callbackfn);\n if (has(this, key)) return get(this, key);\n var value = callbackfn(key);\n set(this, key, value);\n return value;\n }\n});\n", "'use strict';\nvar collection = require('../internals/collection');\nvar collectionWeak = require('../internals/collection-weak');\n\n// `WeakSet` constructor\n// https://tc39.es/ecma262/#sec-weakset-constructor\ncollection('WeakSet', function (init) {\n return function WeakSet() { return init(this, arguments.length ? arguments[0] : undefined); };\n}, collectionWeak);\n", "'use strict';\n// TODO: Remove this module from `core-js@4` since it's replaced to module below\nrequire('../modules/es.weak-set.constructor');\n", "'use strict';\nvar $ = require('../internals/export');\nvar globalThis = require('../internals/global-this');\nvar getBuiltIn = require('../internals/get-built-in');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar call = require('../internals/function-call');\nvar fails = require('../internals/fails');\nvar toString = require('../internals/to-string');\nvar validateArgumentsLength = require('../internals/validate-arguments-length');\nvar c2i = require('../internals/base64-map').c2i;\n\nvar disallowed = /[^\\d+/a-z]/i;\nvar whitespaces = /[\\t\\n\\f\\r ]+/g;\nvar finalEq = /[=]{1,2}$/;\n\nvar $atob = getBuiltIn('atob');\nvar $Array = Array;\nvar fromCharCode = String.fromCharCode;\nvar charAt = uncurryThis(''.charAt);\nvar replace = uncurryThis(''.replace);\nvar join = uncurryThis([].join);\nvar exec = uncurryThis(disallowed.exec);\n\nvar BASIC = !!$atob && !fails(function () {\n return $atob('aGk=') !== 'hi';\n});\n\nvar NO_SPACES_IGNORE = BASIC && fails(function () {\n return $atob(' ') !== '';\n});\n\nvar NO_ENCODING_CHECK = BASIC && !fails(function () {\n $atob('a');\n});\n\nvar NO_ARG_RECEIVING_CHECK = BASIC && !fails(function () {\n $atob();\n});\n\nvar WRONG_ARITY = BASIC && $atob.length !== 1;\n\nvar FORCED = !BASIC || NO_SPACES_IGNORE || NO_ENCODING_CHECK || NO_ARG_RECEIVING_CHECK || WRONG_ARITY;\n\n// `atob` method\n// https://html.spec.whatwg.org/multipage/webappapis.html#dom-atob\n$({ global: true, bind: true, enumerable: true, forced: FORCED }, {\n atob: function atob(data) {\n validateArgumentsLength(arguments.length, 1);\n // `webpack` dev server bug on IE global methods - use call(fn, global, ...)\n if (BASIC && !NO_SPACES_IGNORE && !NO_ENCODING_CHECK) return call($atob, globalThis, data);\n var string = replace(toString(data), whitespaces, '');\n var position = 0;\n var bc = 0;\n var length, chr, bs;\n if (!(string.length & 3)) {\n string = replace(string, finalEq, '');\n }\n length = string.length;\n var lenmod = length & 3;\n if (lenmod === 1 || exec(disallowed, string)) {\n throw new (getBuiltIn('DOMException'))('The string is not correctly encoded', 'InvalidCharacterError');\n }\n // (length >> 2) is equivalent for length / 4 floored; * 3 then multiplies the\n // number of bytes for full quanta\n // lenmod is length % 4; if there's 2 or 3 bytes it's 1 or 2 bytes of extra output\n // respectively, so -1, however use a ternary to ensure 0 does not get -1 onto length\n var output = new $Array((length >> 2) * 3 + (lenmod ? lenmod - 1 : 0));\n var outputIndex = 0;\n while (position < length) {\n chr = charAt(string, position++);\n bs = bc & 3 ? (bs << 6) + c2i[chr] : c2i[chr];\n if (bc++ & 3) output[outputIndex++] = fromCharCode(255 & bs >> (-2 * bc & 6));\n }\n return join(output, '');\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar globalThis = require('../internals/global-this');\nvar getBuiltIn = require('../internals/get-built-in');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar call = require('../internals/function-call');\nvar fails = require('../internals/fails');\nvar toString = require('../internals/to-string');\nvar validateArgumentsLength = require('../internals/validate-arguments-length');\nvar i2c = require('../internals/base64-map').i2c;\n\nvar $btoa = getBuiltIn('btoa');\nvar $Array = Array;\nvar join = uncurryThis([].join);\nvar charAt = uncurryThis(''.charAt);\nvar charCodeAt = uncurryThis(''.charCodeAt);\n\nvar BASIC = !!$btoa && !fails(function () {\n return $btoa('hi') !== 'aGk=';\n});\n\nvar NO_ARG_RECEIVING_CHECK = BASIC && !fails(function () {\n $btoa();\n});\n\nvar WRONG_ARG_CONVERSION = BASIC && fails(function () {\n return $btoa(null) !== 'bnVsbA==';\n});\n\nvar WRONG_ARITY = BASIC && $btoa.length !== 1;\n\n// `btoa` method\n// https://html.spec.whatwg.org/multipage/webappapis.html#dom-btoa\n$({ global: true, bind: true, enumerable: true, forced: !BASIC || NO_ARG_RECEIVING_CHECK || WRONG_ARG_CONVERSION || WRONG_ARITY }, {\n btoa: function btoa(data) {\n validateArgumentsLength(arguments.length, 1);\n // `webpack` dev server bug on IE global methods - use call(fn, global, ...)\n if (BASIC) return call($btoa, globalThis, toString(data));\n var string = toString(data);\n // (string.length + 2) / 3) and then truncating to integer\n // does the ceil automatically. << 2 will truncate the integer\n // while also doing *4. ceil(length / 3) quanta, 4 bytes output\n // per quanta for base64.\n var output = new $Array((string.length + 2) / 3 << 2);\n var outputIndex = 0;\n var position = 0;\n var map = i2c;\n var block, charCode;\n while (charAt(string, position) || (map = '=', position % 1)) {\n charCode = charCodeAt(string, position += 3 / 4);\n if (charCode > 0xFF) {\n throw new (getBuiltIn('DOMException'))('The string contains characters outside of the Latin1 range', 'InvalidCharacterError');\n }\n block = block << 8 | charCode;\n output[outputIndex++] = charAt(map, 63 & block >> 8 - position % 1 * 8);\n } return join(output, '');\n }\n});\n", "'use strict';\n// iterable DOM collections\n// flag - `iterable` interface - 'entries', 'keys', 'values', 'forEach' methods\nmodule.exports = {\n CSSRuleList: 0,\n CSSStyleDeclaration: 0,\n CSSValueList: 0,\n ClientRectList: 0,\n DOMRectList: 0,\n DOMStringList: 0,\n DOMTokenList: 1,\n DataTransferItemList: 0,\n FileList: 0,\n HTMLAllCollection: 0,\n HTMLCollection: 0,\n HTMLFormElement: 0,\n HTMLSelectElement: 0,\n MediaList: 0,\n MimeTypeArray: 0,\n NamedNodeMap: 0,\n NodeList: 1,\n PaintRequestList: 0,\n Plugin: 0,\n PluginArray: 0,\n SVGLengthList: 0,\n SVGNumberList: 0,\n SVGPathSegList: 0,\n SVGPointList: 0,\n SVGStringList: 0,\n SVGTransformList: 0,\n SourceBufferList: 0,\n StyleSheetList: 0,\n TextTrackCueList: 0,\n TextTrackList: 0,\n TouchList: 0\n};\n", "'use strict';\n// in old WebKit versions, `element.classList` is not an instance of global `DOMTokenList`\nvar documentCreateElement = require('../internals/document-create-element');\n\nvar classList = documentCreateElement('span').classList;\nvar DOMTokenListPrototype = classList && classList.constructor && classList.constructor.prototype;\n\nmodule.exports = DOMTokenListPrototype === Object.prototype ? undefined : DOMTokenListPrototype;\n", "'use strict';\nvar globalThis = require('../internals/global-this');\nvar DOMIterables = require('../internals/dom-iterables');\nvar DOMTokenListPrototype = require('../internals/dom-token-list-prototype');\nvar forEach = require('../internals/array-for-each');\nvar createNonEnumerableProperty = require('../internals/create-non-enumerable-property');\n\nvar handlePrototype = function (CollectionPrototype) {\n // some Chrome versions have non-configurable methods on DOMTokenList\n if (CollectionPrototype && CollectionPrototype.forEach !== forEach) try {\n createNonEnumerableProperty(CollectionPrototype, 'forEach', forEach);\n } catch (error) {\n CollectionPrototype.forEach = forEach;\n }\n};\n\nfor (var COLLECTION_NAME in DOMIterables) {\n if (DOMIterables[COLLECTION_NAME]) {\n handlePrototype(globalThis[COLLECTION_NAME] && globalThis[COLLECTION_NAME].prototype);\n }\n}\n\nhandlePrototype(DOMTokenListPrototype);\n", "'use strict';\nvar globalThis = require('../internals/global-this');\nvar DOMIterables = require('../internals/dom-iterables');\nvar DOMTokenListPrototype = require('../internals/dom-token-list-prototype');\nvar ArrayIteratorMethods = require('../modules/es.array.iterator');\nvar createNonEnumerableProperty = require('../internals/create-non-enumerable-property');\nvar setToStringTag = require('../internals/set-to-string-tag');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\n\nvar ITERATOR = wellKnownSymbol('iterator');\nvar ArrayValues = ArrayIteratorMethods.values;\n\nvar handlePrototype = function (CollectionPrototype, COLLECTION_NAME) {\n if (CollectionPrototype) {\n // some Chrome versions have non-configurable methods on DOMTokenList\n if (CollectionPrototype[ITERATOR] !== ArrayValues) try {\n createNonEnumerableProperty(CollectionPrototype, ITERATOR, ArrayValues);\n } catch (error) {\n CollectionPrototype[ITERATOR] = ArrayValues;\n }\n setToStringTag(CollectionPrototype, COLLECTION_NAME, true);\n if (DOMIterables[COLLECTION_NAME]) for (var METHOD_NAME in ArrayIteratorMethods) {\n // some Chrome versions have non-configurable methods on DOMTokenList\n if (CollectionPrototype[METHOD_NAME] !== ArrayIteratorMethods[METHOD_NAME]) try {\n createNonEnumerableProperty(CollectionPrototype, METHOD_NAME, ArrayIteratorMethods[METHOD_NAME]);\n } catch (error) {\n CollectionPrototype[METHOD_NAME] = ArrayIteratorMethods[METHOD_NAME];\n }\n }\n }\n};\n\nfor (var COLLECTION_NAME in DOMIterables) {\n handlePrototype(globalThis[COLLECTION_NAME] && globalThis[COLLECTION_NAME].prototype, COLLECTION_NAME);\n}\n\nhandlePrototype(DOMTokenListPrototype, 'DOMTokenList');\n", "'use strict';\nmodule.exports = {\n IndexSizeError: { s: 'INDEX_SIZE_ERR', c: 1, m: 1 },\n DOMStringSizeError: { s: 'DOMSTRING_SIZE_ERR', c: 2, m: 0 },\n HierarchyRequestError: { s: 'HIERARCHY_REQUEST_ERR', c: 3, m: 1 },\n WrongDocumentError: { s: 'WRONG_DOCUMENT_ERR', c: 4, m: 1 },\n InvalidCharacterError: { s: 'INVALID_CHARACTER_ERR', c: 5, m: 1 },\n NoDataAllowedError: { s: 'NO_DATA_ALLOWED_ERR', c: 6, m: 0 },\n NoModificationAllowedError: { s: 'NO_MODIFICATION_ALLOWED_ERR', c: 7, m: 1 },\n NotFoundError: { s: 'NOT_FOUND_ERR', c: 8, m: 1 },\n NotSupportedError: { s: 'NOT_SUPPORTED_ERR', c: 9, m: 1 },\n InUseAttributeError: { s: 'INUSE_ATTRIBUTE_ERR', c: 10, m: 1 },\n InvalidStateError: { s: 'INVALID_STATE_ERR', c: 11, m: 1 },\n SyntaxError: { s: 'SYNTAX_ERR', c: 12, m: 1 },\n InvalidModificationError: { s: 'INVALID_MODIFICATION_ERR', c: 13, m: 1 },\n NamespaceError: { s: 'NAMESPACE_ERR', c: 14, m: 1 },\n InvalidAccessError: { s: 'INVALID_ACCESS_ERR', c: 15, m: 1 },\n ValidationError: { s: 'VALIDATION_ERR', c: 16, m: 0 },\n TypeMismatchError: { s: 'TYPE_MISMATCH_ERR', c: 17, m: 1 },\n SecurityError: { s: 'SECURITY_ERR', c: 18, m: 1 },\n NetworkError: { s: 'NETWORK_ERR', c: 19, m: 1 },\n AbortError: { s: 'ABORT_ERR', c: 20, m: 1 },\n URLMismatchError: { s: 'URL_MISMATCH_ERR', c: 21, m: 1 },\n QuotaExceededError: { s: 'QUOTA_EXCEEDED_ERR', c: 22, m: 1 },\n TimeoutError: { s: 'TIMEOUT_ERR', c: 23, m: 1 },\n InvalidNodeTypeError: { s: 'INVALID_NODE_TYPE_ERR', c: 24, m: 1 },\n DataCloneError: { s: 'DATA_CLONE_ERR', c: 25, m: 1 }\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar getBuiltIn = require('../internals/get-built-in');\nvar getBuiltInNodeModule = require('../internals/get-built-in-node-module');\nvar fails = require('../internals/fails');\nvar create = require('../internals/object-create');\nvar createPropertyDescriptor = require('../internals/create-property-descriptor');\nvar defineProperty = require('../internals/object-define-property').f;\nvar defineBuiltIn = require('../internals/define-built-in');\nvar defineBuiltInAccessor = require('../internals/define-built-in-accessor');\nvar hasOwn = require('../internals/has-own-property');\nvar anInstance = require('../internals/an-instance');\nvar anObject = require('../internals/an-object');\nvar errorToString = require('../internals/error-to-string');\nvar normalizeStringArgument = require('../internals/normalize-string-argument');\nvar DOMExceptionConstants = require('../internals/dom-exception-constants');\nvar clearErrorStack = require('../internals/error-stack-clear');\nvar InternalStateModule = require('../internals/internal-state');\nvar DESCRIPTORS = require('../internals/descriptors');\nvar IS_PURE = require('../internals/is-pure');\n\nvar DOM_EXCEPTION = 'DOMException';\nvar DATA_CLONE_ERR = 'DATA_CLONE_ERR';\nvar Error = getBuiltIn('Error');\n// NodeJS < 17.0 does not expose `DOMException` to global\nvar NativeDOMException = getBuiltIn(DOM_EXCEPTION) || (function () {\n try {\n // NodeJS < 15.0 does not expose `MessageChannel` to global\n var MessageChannel = getBuiltIn('MessageChannel') || getBuiltInNodeModule('worker_threads').MessageChannel;\n // eslint-disable-next-line es/no-weak-map, unicorn/require-post-message-target-origin -- safe\n new MessageChannel().port1.postMessage(new WeakMap());\n } catch (error) {\n if (error.name === DATA_CLONE_ERR && error.code === 25) return error.constructor;\n }\n})();\nvar NativeDOMExceptionPrototype = NativeDOMException && NativeDOMException.prototype;\nvar ErrorPrototype = Error.prototype;\nvar setInternalState = InternalStateModule.set;\nvar getInternalState = InternalStateModule.getterFor(DOM_EXCEPTION);\nvar HAS_STACK = 'stack' in new Error(DOM_EXCEPTION);\n\nvar codeFor = function (name) {\n return hasOwn(DOMExceptionConstants, name) && DOMExceptionConstants[name].m ? DOMExceptionConstants[name].c : 0;\n};\n\nvar $DOMException = function DOMException() {\n anInstance(this, DOMExceptionPrototype);\n var argumentsLength = arguments.length;\n var message = normalizeStringArgument(argumentsLength < 1 ? undefined : arguments[0]);\n var name = normalizeStringArgument(argumentsLength < 2 ? undefined : arguments[1], 'Error');\n var code = codeFor(name);\n setInternalState(this, {\n type: DOM_EXCEPTION,\n name: name,\n message: message,\n code: code\n });\n if (!DESCRIPTORS) {\n this.name = name;\n this.message = message;\n this.code = code;\n }\n if (HAS_STACK) {\n var error = new Error(message);\n error.name = DOM_EXCEPTION;\n defineProperty(this, 'stack', createPropertyDescriptor(1, clearErrorStack(error.stack, 1)));\n }\n};\n\nvar DOMExceptionPrototype = $DOMException.prototype = create(ErrorPrototype);\n\nvar createGetterDescriptor = function (get) {\n return { enumerable: true, configurable: true, get: get };\n};\n\nvar getterFor = function (key) {\n return createGetterDescriptor(function () {\n return getInternalState(this)[key];\n });\n};\n\nif (DESCRIPTORS) {\n // `DOMException.prototype.code` getter\n defineBuiltInAccessor(DOMExceptionPrototype, 'code', getterFor('code'));\n // `DOMException.prototype.message` getter\n defineBuiltInAccessor(DOMExceptionPrototype, 'message', getterFor('message'));\n // `DOMException.prototype.name` getter\n defineBuiltInAccessor(DOMExceptionPrototype, 'name', getterFor('name'));\n}\n\ndefineProperty(DOMExceptionPrototype, 'constructor', createPropertyDescriptor(1, $DOMException));\n\n// FF36- DOMException is a function, but can't be constructed\nvar INCORRECT_CONSTRUCTOR = fails(function () {\n return !(new NativeDOMException() instanceof Error);\n});\n\n// Safari 10.1 / Chrome 32- / IE8- DOMException.prototype.toString bugs\nvar INCORRECT_TO_STRING = INCORRECT_CONSTRUCTOR || fails(function () {\n return ErrorPrototype.toString !== errorToString || String(new NativeDOMException(1, 2)) !== '2: 1';\n});\n\n// Deno 1.6.3- DOMException.prototype.code just missed\nvar INCORRECT_CODE = INCORRECT_CONSTRUCTOR || fails(function () {\n return new NativeDOMException(1, 'DataCloneError').code !== 25;\n});\n\n// Deno 1.6.3- DOMException constants just missed\nvar MISSED_CONSTANTS = INCORRECT_CONSTRUCTOR\n || NativeDOMException[DATA_CLONE_ERR] !== 25\n || NativeDOMExceptionPrototype[DATA_CLONE_ERR] !== 25;\n\nvar FORCED_CONSTRUCTOR = IS_PURE ? INCORRECT_TO_STRING || INCORRECT_CODE || MISSED_CONSTANTS : INCORRECT_CONSTRUCTOR;\n\n// `DOMException` constructor\n// https://webidl.spec.whatwg.org/#idl-DOMException\n$({ global: true, constructor: true, forced: FORCED_CONSTRUCTOR }, {\n DOMException: FORCED_CONSTRUCTOR ? $DOMException : NativeDOMException\n});\n\nvar PolyfilledDOMException = getBuiltIn(DOM_EXCEPTION);\nvar PolyfilledDOMExceptionPrototype = PolyfilledDOMException.prototype;\n\nif (INCORRECT_TO_STRING && (IS_PURE || NativeDOMException === PolyfilledDOMException)) {\n defineBuiltIn(PolyfilledDOMExceptionPrototype, 'toString', errorToString);\n}\n\nif (INCORRECT_CODE && DESCRIPTORS && NativeDOMException === PolyfilledDOMException) {\n defineBuiltInAccessor(PolyfilledDOMExceptionPrototype, 'code', createGetterDescriptor(function () {\n return codeFor(anObject(this).name);\n }));\n}\n\n// `DOMException` constants\nfor (var key in DOMExceptionConstants) if (hasOwn(DOMExceptionConstants, key)) {\n var constant = DOMExceptionConstants[key];\n var constantName = constant.s;\n var descriptor = createPropertyDescriptor(6, constant.c);\n if (!hasOwn(PolyfilledDOMException, constantName)) {\n defineProperty(PolyfilledDOMException, constantName, descriptor);\n }\n if (!hasOwn(PolyfilledDOMExceptionPrototype, constantName)) {\n defineProperty(PolyfilledDOMExceptionPrototype, constantName, descriptor);\n }\n}\n", "'use strict';\nvar $ = require('../internals/export');\nvar globalThis = require('../internals/global-this');\nvar getBuiltIn = require('../internals/get-built-in');\nvar createPropertyDescriptor = require('../internals/create-property-descriptor');\nvar defineProperty = require('../internals/object-define-property').f;\nvar hasOwn = require('../internals/has-own-property');\nvar anInstance = require('../internals/an-instance');\nvar inheritIfRequired = require('../internals/inherit-if-required');\nvar normalizeStringArgument = require('../internals/normalize-string-argument');\nvar DOMExceptionConstants = require('../internals/dom-exception-constants');\nvar clearErrorStack = require('../internals/error-stack-clear');\nvar DESCRIPTORS = require('../internals/descriptors');\nvar IS_PURE = require('../internals/is-pure');\n\nvar DOM_EXCEPTION = 'DOMException';\nvar Error = getBuiltIn('Error');\nvar NativeDOMException = getBuiltIn(DOM_EXCEPTION);\n\nvar $DOMException = function DOMException() {\n anInstance(this, DOMExceptionPrototype);\n var argumentsLength = arguments.length;\n var message = normalizeStringArgument(argumentsLength < 1 ? undefined : arguments[0]);\n var name = normalizeStringArgument(argumentsLength < 2 ? undefined : arguments[1], 'Error');\n var that = new NativeDOMException(message, name);\n var error = new Error(message);\n error.name = DOM_EXCEPTION;\n defineProperty(that, 'stack', createPropertyDescriptor(1, clearErrorStack(error.stack, 1)));\n inheritIfRequired(that, this, $DOMException);\n return that;\n};\n\nvar DOMExceptionPrototype = $DOMException.prototype = NativeDOMException.prototype;\n\nvar ERROR_HAS_STACK = 'stack' in new Error(DOM_EXCEPTION);\nvar DOM_EXCEPTION_HAS_STACK = 'stack' in new NativeDOMException(1, 2);\n\n// eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe\nvar descriptor = NativeDOMException && DESCRIPTORS && Object.getOwnPropertyDescriptor(globalThis, DOM_EXCEPTION);\n\n// Bun ~ 0.1.1 DOMException have incorrect descriptor and we can't redefine it\n// https://github.com/Jarred-Sumner/bun/issues/399\nvar BUGGY_DESCRIPTOR = !!descriptor && !(descriptor.writable && descriptor.configurable);\n\nvar FORCED_CONSTRUCTOR = ERROR_HAS_STACK && !BUGGY_DESCRIPTOR && !DOM_EXCEPTION_HAS_STACK;\n\n// `DOMException` constructor patch for `.stack` where it's required\n// https://webidl.spec.whatwg.org/#es-DOMException-specialness\n$({ global: true, constructor: true, forced: IS_PURE || FORCED_CONSTRUCTOR }, { // TODO: fix export logic\n DOMException: FORCED_CONSTRUCTOR ? $DOMException : NativeDOMException\n});\n\nvar PolyfilledDOMException = getBuiltIn(DOM_EXCEPTION);\nvar PolyfilledDOMExceptionPrototype = PolyfilledDOMException.prototype;\n\nif (PolyfilledDOMExceptionPrototype.constructor !== PolyfilledDOMException) {\n if (!IS_PURE) {\n defineProperty(PolyfilledDOMExceptionPrototype, 'constructor', createPropertyDescriptor(1, PolyfilledDOMException));\n }\n\n for (var key in DOMExceptionConstants) if (hasOwn(DOMExceptionConstants, key)) {\n var constant = DOMExceptionConstants[key];\n var constantName = constant.s;\n if (!hasOwn(PolyfilledDOMException, constantName)) {\n defineProperty(PolyfilledDOMException, constantName, createPropertyDescriptor(6, constant.c));\n }\n }\n}\n", "'use strict';\nvar getBuiltIn = require('../internals/get-built-in');\nvar setToStringTag = require('../internals/set-to-string-tag');\n\nvar DOM_EXCEPTION = 'DOMException';\n\n// `DOMException.prototype[@@toStringTag]` property\nsetToStringTag(getBuiltIn(DOM_EXCEPTION), DOM_EXCEPTION);\n", "'use strict';\nvar $ = require('../internals/export');\nvar globalThis = require('../internals/global-this');\nvar clearImmediate = require('../internals/task').clear;\n\n// `clearImmediate` method\n// http://w3c.github.io/setImmediate/#si-clearImmediate\n$({ global: true, bind: true, enumerable: true, forced: globalThis.clearImmediate !== clearImmediate }, {\n clearImmediate: clearImmediate\n});\n", "'use strict';\nvar globalThis = require('../internals/global-this');\nvar apply = require('../internals/function-apply');\nvar isCallable = require('../internals/is-callable');\nvar ENVIRONMENT = require('../internals/environment');\nvar USER_AGENT = require('../internals/environment-user-agent');\nvar arraySlice = require('../internals/array-slice');\nvar validateArgumentsLength = require('../internals/validate-arguments-length');\n\nvar Function = globalThis.Function;\n// dirty IE9- and Bun 0.3.0- checks\nvar WRAP = /MSIE .\\./.test(USER_AGENT) || ENVIRONMENT === 'BUN' && (function () {\n var version = globalThis.Bun.version.split('.');\n return version.length < 3 || version[0] === '0' && (version[1] < 3 || version[1] === '3' && version[2] === '0');\n})();\n\n// IE9- / Bun 0.3.0- setTimeout / setInterval / setImmediate additional parameters fix\n// https://html.spec.whatwg.org/multipage/timers-and-user-prompts.html#timers\n// https://github.com/oven-sh/bun/issues/1633\nmodule.exports = function (scheduler, hasTimeArg) {\n var firstParamIndex = hasTimeArg ? 2 : 1;\n return WRAP ? function (handler, timeout /* , ...arguments */) {\n var boundArgs = validateArgumentsLength(arguments.length, 1) > firstParamIndex;\n var fn = isCallable(handler) ? handler : Function(handler);\n var params = boundArgs ? arraySlice(arguments, firstParamIndex) : [];\n var callback = boundArgs ? function () {\n apply(fn, this, params);\n } : fn;\n return hasTimeArg ? scheduler(callback, timeout) : scheduler(callback);\n } : scheduler;\n};\n", "'use strict';\nvar $ = require('../internals/export');\nvar globalThis = require('../internals/global-this');\nvar setTask = require('../internals/task').set;\nvar schedulersFix = require('../internals/schedulers-fix');\n\n// https://github.com/oven-sh/bun/issues/1633\nvar setImmediate = globalThis.setImmediate ? schedulersFix(setTask, false) : setTask;\n\n// `setImmediate` method\n// http://w3c.github.io/setImmediate/#si-setImmediate\n$({ global: true, bind: true, enumerable: true, forced: globalThis.setImmediate !== setImmediate }, {\n setImmediate: setImmediate\n});\n", "'use strict';\n// TODO: Remove this module from `core-js@4` since it's split to modules listed below\nrequire('../modules/web.clear-immediate');\nrequire('../modules/web.set-immediate');\n", "'use strict';\nvar $ = require('../internals/export');\nvar globalThis = require('../internals/global-this');\nvar microtask = require('../internals/microtask');\nvar aCallable = require('../internals/a-callable');\nvar validateArgumentsLength = require('../internals/validate-arguments-length');\nvar fails = require('../internals/fails');\nvar DESCRIPTORS = require('../internals/descriptors');\n\n// Bun ~ 1.0.30 bug\n// https://github.com/oven-sh/bun/issues/9249\nvar WRONG_ARITY = fails(function () {\n // getOwnPropertyDescriptor for prevent experimental warning in Node 11\n // eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe\n return DESCRIPTORS && Object.getOwnPropertyDescriptor(globalThis, 'queueMicrotask').value.length !== 1;\n});\n\n// `queueMicrotask` method\n// https://html.spec.whatwg.org/multipage/timers-and-user-prompts.html#dom-queuemicrotask\n$({ global: true, enumerable: true, dontCallGetSet: true, forced: WRONG_ARITY }, {\n queueMicrotask: function queueMicrotask(fn) {\n validateArgumentsLength(arguments.length, 1);\n microtask(aCallable(fn));\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar globalThis = require('../internals/global-this');\nvar defineBuiltInAccessor = require('../internals/define-built-in-accessor');\nvar DESCRIPTORS = require('../internals/descriptors');\n\nvar $TypeError = TypeError;\n// eslint-disable-next-line es/no-object-defineproperty -- safe\nvar defineProperty = Object.defineProperty;\nvar INCORRECT_VALUE = globalThis.self !== globalThis;\n\n// `self` getter\n// https://html.spec.whatwg.org/multipage/window-object.html#dom-self\ntry {\n if (DESCRIPTORS) {\n // eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe\n var descriptor = Object.getOwnPropertyDescriptor(globalThis, 'self');\n // some engines have `self`, but with incorrect descriptor\n // https://github.com/denoland/deno/issues/15765\n if (INCORRECT_VALUE || !descriptor || !descriptor.get || !descriptor.enumerable) {\n defineBuiltInAccessor(globalThis, 'self', {\n get: function self() {\n return globalThis;\n },\n set: function self(value) {\n if (this !== globalThis) throw new $TypeError('Illegal invocation');\n defineProperty(globalThis, 'self', {\n value: value,\n writable: true,\n configurable: true,\n enumerable: true\n });\n },\n configurable: true,\n enumerable: true\n });\n }\n } else $({ global: true, simple: true, forced: INCORRECT_VALUE }, {\n self: globalThis\n });\n} catch (error) { /* empty */ }\n", "'use strict';\nvar IS_PURE = require('../internals/is-pure');\nvar $ = require('../internals/export');\nvar globalThis = require('../internals/global-this');\nvar getBuiltIn = require('../internals/get-built-in');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar fails = require('../internals/fails');\nvar uid = require('../internals/uid');\nvar isCallable = require('../internals/is-callable');\nvar isConstructor = require('../internals/is-constructor');\nvar isNullOrUndefined = require('../internals/is-null-or-undefined');\nvar isObject = require('../internals/is-object');\nvar isSymbol = require('../internals/is-symbol');\nvar iterate = require('../internals/iterate');\nvar anObject = require('../internals/an-object');\nvar classof = require('../internals/classof');\nvar hasOwn = require('../internals/has-own-property');\nvar createProperty = require('../internals/create-property');\nvar createNonEnumerableProperty = require('../internals/create-non-enumerable-property');\nvar lengthOfArrayLike = require('../internals/length-of-array-like');\nvar validateArgumentsLength = require('../internals/validate-arguments-length');\nvar getRegExpFlags = require('../internals/regexp-get-flags');\nvar MapHelpers = require('../internals/map-helpers');\nvar SetHelpers = require('../internals/set-helpers');\nvar setIterate = require('../internals/set-iterate');\nvar detachTransferable = require('../internals/detach-transferable');\nvar ERROR_STACK_INSTALLABLE = require('../internals/error-stack-installable');\nvar PROPER_STRUCTURED_CLONE_TRANSFER = require('../internals/structured-clone-proper-transfer');\n\nvar Object = globalThis.Object;\nvar Array = globalThis.Array;\nvar Date = globalThis.Date;\nvar Error = globalThis.Error;\nvar TypeError = globalThis.TypeError;\nvar PerformanceMark = globalThis.PerformanceMark;\nvar DOMException = getBuiltIn('DOMException');\nvar Map = MapHelpers.Map;\nvar mapHas = MapHelpers.has;\nvar mapGet = MapHelpers.get;\nvar mapSet = MapHelpers.set;\nvar Set = SetHelpers.Set;\nvar setAdd = SetHelpers.add;\nvar setHas = SetHelpers.has;\nvar objectKeys = getBuiltIn('Object', 'keys');\nvar push = uncurryThis([].push);\nvar thisBooleanValue = uncurryThis(true.valueOf);\nvar thisNumberValue = uncurryThis(1.1.valueOf);\nvar thisStringValue = uncurryThis(''.valueOf);\nvar thisTimeValue = uncurryThis(Date.prototype.getTime);\nvar PERFORMANCE_MARK = uid('structuredClone');\nvar DATA_CLONE_ERROR = 'DataCloneError';\nvar TRANSFERRING = 'Transferring';\n\nvar checkBasicSemantic = function (structuredCloneImplementation) {\n return !fails(function () {\n var set1 = new globalThis.Set([7]);\n var set2 = structuredCloneImplementation(set1);\n var number = structuredCloneImplementation(Object(7));\n return set2 === set1 || !set2.has(7) || !isObject(number) || +number !== 7;\n }) && structuredCloneImplementation;\n};\n\nvar checkErrorsCloning = function (structuredCloneImplementation, $Error) {\n return !fails(function () {\n var error = new $Error();\n var test = structuredCloneImplementation({ a: error, b: error });\n return !(test && test.a === test.b && test.a instanceof $Error && test.a.stack === error.stack);\n });\n};\n\n// https://github.com/whatwg/html/pull/5749\nvar checkNewErrorsCloningSemantic = function (structuredCloneImplementation) {\n return !fails(function () {\n var test = structuredCloneImplementation(new globalThis.AggregateError([1], PERFORMANCE_MARK, { cause: 3 }));\n return test.name !== 'AggregateError' || test.errors[0] !== 1 || test.message !== PERFORMANCE_MARK || test.cause !== 3;\n });\n};\n\n// FF94+, Safari 15.4+, Chrome 98+, NodeJS 17.0+, Deno 1.13+\n// FF<103 and Safari implementations can't clone errors\n// https://bugzilla.mozilla.org/show_bug.cgi?id=1556604\n// FF103 can clone errors, but `.stack` of clone is an empty string\n// https://bugzilla.mozilla.org/show_bug.cgi?id=1778762\n// FF104+ fixed it on usual errors, but not on DOMExceptions\n// https://bugzilla.mozilla.org/show_bug.cgi?id=1777321\n// Chrome <102 returns `null` if cloned object contains multiple references to one error\n// https://bugs.chromium.org/p/v8/issues/detail?id=12542\n// NodeJS implementation can't clone DOMExceptions\n// https://github.com/nodejs/node/issues/41038\n// only FF103+ supports new (html/5749) error cloning semantic\nvar nativeStructuredClone = globalThis.structuredClone;\n\nvar FORCED_REPLACEMENT = IS_PURE\n || !checkErrorsCloning(nativeStructuredClone, Error)\n || !checkErrorsCloning(nativeStructuredClone, DOMException)\n || !checkNewErrorsCloningSemantic(nativeStructuredClone);\n\n// Chrome 82+, Safari 14.1+, Deno 1.11+\n// Chrome 78-81 implementation swaps `.name` and `.message` of cloned `DOMException`\n// Chrome returns `null` if cloned object contains multiple references to one error\n// Safari 14.1 implementation doesn't clone some `RegExp` flags, so requires a workaround\n// Safari implementation can't clone errors\n// Deno 1.2-1.10 implementations too naive\n// NodeJS 16.0+ does not have `PerformanceMark` constructor\n// NodeJS <17.2 structured cloning implementation from `performance.mark` is too naive\n// and can't clone, for example, `RegExp` or some boxed primitives\n// https://github.com/nodejs/node/issues/40840\n// no one of those implementations supports new (html/5749) error cloning semantic\nvar structuredCloneFromMark = !nativeStructuredClone && checkBasicSemantic(function (value) {\n return new PerformanceMark(PERFORMANCE_MARK, { detail: value }).detail;\n});\n\nvar nativeRestrictedStructuredClone = checkBasicSemantic(nativeStructuredClone) || structuredCloneFromMark;\n\nvar throwUncloneable = function (type) {\n throw new DOMException('Uncloneable type: ' + type, DATA_CLONE_ERROR);\n};\n\nvar throwUnpolyfillable = function (type, action) {\n throw new DOMException((action || 'Cloning') + ' of ' + type + ' cannot be properly polyfilled in this engine', DATA_CLONE_ERROR);\n};\n\nvar tryNativeRestrictedStructuredClone = function (value, type) {\n if (!nativeRestrictedStructuredClone) throwUnpolyfillable(type);\n return nativeRestrictedStructuredClone(value);\n};\n\nvar createDataTransfer = function () {\n var dataTransfer;\n try {\n dataTransfer = new globalThis.DataTransfer();\n } catch (error) {\n try {\n dataTransfer = new globalThis.ClipboardEvent('').clipboardData;\n } catch (error2) { /* empty */ }\n }\n return dataTransfer && dataTransfer.items && dataTransfer.files ? dataTransfer : null;\n};\n\nvar cloneBuffer = function (value, map, $type) {\n if (mapHas(map, value)) return mapGet(map, value);\n\n var type = $type || classof(value);\n var clone, length, options, source, target, i;\n\n if (type === 'SharedArrayBuffer') {\n if (nativeRestrictedStructuredClone) clone = nativeRestrictedStructuredClone(value);\n // SharedArrayBuffer should use shared memory, we can't polyfill it, so return the original\n else clone = value;\n } else {\n var DataView = globalThis.DataView;\n\n // `ArrayBuffer#slice` is not available in IE10\n // `ArrayBuffer#slice` and `DataView` are not available in old FF\n if (!DataView && !isCallable(value.slice)) throwUnpolyfillable('ArrayBuffer');\n // detached buffers throws in `DataView` and `.slice`\n try {\n if (isCallable(value.slice) && !value.resizable) {\n clone = value.slice(0);\n } else {\n length = value.byteLength;\n options = 'maxByteLength' in value ? { maxByteLength: value.maxByteLength } : undefined;\n // eslint-disable-next-line es/no-resizable-and-growable-arraybuffers -- safe\n clone = new ArrayBuffer(length, options);\n source = new DataView(value);\n target = new DataView(clone);\n for (i = 0; i < length; i++) {\n target.setUint8(i, source.getUint8(i));\n }\n }\n } catch (error) {\n throw new DOMException('ArrayBuffer is detached', DATA_CLONE_ERROR);\n }\n }\n\n mapSet(map, value, clone);\n\n return clone;\n};\n\nvar cloneView = function (value, type, offset, length, map) {\n var C = globalThis[type];\n // in some old engines like Safari 9, typeof C is 'object'\n // on Uint8ClampedArray or some other constructors\n if (!isObject(C)) throwUnpolyfillable(type);\n return new C(cloneBuffer(value.buffer, map), offset, length);\n};\n\nvar structuredCloneInternal = function (value, map) {\n if (isSymbol(value)) throwUncloneable('Symbol');\n if (!isObject(value)) return value;\n // effectively preserves circular references\n if (map) {\n if (mapHas(map, value)) return mapGet(map, value);\n } else map = new Map();\n\n var type = classof(value);\n var C, name, cloned, dataTransfer, i, length, keys, key;\n\n switch (type) {\n case 'Array':\n cloned = Array(lengthOfArrayLike(value));\n break;\n case 'Object':\n cloned = {};\n break;\n case 'Map':\n cloned = new Map();\n break;\n case 'Set':\n cloned = new Set();\n break;\n case 'RegExp':\n // in this block because of a Safari 14.1 bug\n // old FF does not clone regexes passed to the constructor, so get the source and flags directly\n cloned = new RegExp(value.source, getRegExpFlags(value));\n break;\n case 'Error':\n name = value.name;\n switch (name) {\n case 'AggregateError':\n cloned = new (getBuiltIn(name))([]);\n break;\n case 'EvalError':\n case 'RangeError':\n case 'ReferenceError':\n case 'SuppressedError':\n case 'SyntaxError':\n case 'TypeError':\n case 'URIError':\n cloned = new (getBuiltIn(name))();\n break;\n case 'CompileError':\n case 'LinkError':\n case 'RuntimeError':\n cloned = new (getBuiltIn('WebAssembly', name))();\n break;\n default:\n cloned = new Error();\n }\n break;\n case 'DOMException':\n cloned = new DOMException(value.message, value.name);\n break;\n case 'ArrayBuffer':\n case 'SharedArrayBuffer':\n cloned = cloneBuffer(value, map, type);\n break;\n case 'DataView':\n case 'Int8Array':\n case 'Uint8Array':\n case 'Uint8ClampedArray':\n case 'Int16Array':\n case 'Uint16Array':\n case 'Int32Array':\n case 'Uint32Array':\n case 'Float16Array':\n case 'Float32Array':\n case 'Float64Array':\n case 'BigInt64Array':\n case 'BigUint64Array':\n length = type === 'DataView' ? value.byteLength : value.length;\n cloned = cloneView(value, type, value.byteOffset, length, map);\n break;\n case 'DOMQuad':\n try {\n cloned = new DOMQuad(\n structuredCloneInternal(value.p1, map),\n structuredCloneInternal(value.p2, map),\n structuredCloneInternal(value.p3, map),\n structuredCloneInternal(value.p4, map)\n );\n } catch (error) {\n cloned = tryNativeRestrictedStructuredClone(value, type);\n }\n break;\n case 'File':\n if (nativeRestrictedStructuredClone) try {\n cloned = nativeRestrictedStructuredClone(value);\n // NodeJS 20.0.0 bug, https://github.com/nodejs/node/issues/47612\n if (classof(cloned) !== type) cloned = undefined;\n } catch (error) { /* empty */ }\n if (!cloned) try {\n cloned = new File([value], value.name, value);\n } catch (error) { /* empty */ }\n if (!cloned) throwUnpolyfillable(type);\n break;\n case 'FileList':\n dataTransfer = createDataTransfer();\n if (dataTransfer) {\n for (i = 0, length = lengthOfArrayLike(value); i < length; i++) {\n dataTransfer.items.add(structuredCloneInternal(value[i], map));\n }\n cloned = dataTransfer.files;\n } else cloned = tryNativeRestrictedStructuredClone(value, type);\n break;\n case 'ImageData':\n // Safari 9 ImageData is a constructor, but typeof ImageData is 'object'\n try {\n cloned = new ImageData(\n structuredCloneInternal(value.data, map),\n value.width,\n value.height,\n { colorSpace: value.colorSpace }\n );\n } catch (error) {\n cloned = tryNativeRestrictedStructuredClone(value, type);\n } break;\n default:\n if (nativeRestrictedStructuredClone) {\n cloned = nativeRestrictedStructuredClone(value);\n } else switch (type) {\n case 'BigInt':\n // can be a 3rd party polyfill\n cloned = Object(value.valueOf());\n break;\n case 'Boolean':\n cloned = Object(thisBooleanValue(value));\n break;\n case 'Number':\n cloned = Object(thisNumberValue(value));\n break;\n case 'String':\n cloned = Object(thisStringValue(value));\n break;\n case 'Date':\n cloned = new Date(thisTimeValue(value));\n break;\n case 'Blob':\n try {\n cloned = value.slice(0, value.size, value.type);\n } catch (error) {\n throwUnpolyfillable(type);\n } break;\n case 'DOMPoint':\n case 'DOMPointReadOnly':\n C = globalThis[type];\n try {\n cloned = C.fromPoint\n ? C.fromPoint(value)\n : new C(value.x, value.y, value.z, value.w);\n } catch (error) {\n throwUnpolyfillable(type);\n } break;\n case 'DOMRect':\n case 'DOMRectReadOnly':\n C = globalThis[type];\n try {\n cloned = C.fromRect\n ? C.fromRect(value)\n : new C(value.x, value.y, value.width, value.height);\n } catch (error) {\n throwUnpolyfillable(type);\n } break;\n case 'DOMMatrix':\n case 'DOMMatrixReadOnly':\n C = globalThis[type];\n try {\n cloned = C.fromMatrix\n ? C.fromMatrix(value)\n : new C(value);\n } catch (error) {\n throwUnpolyfillable(type);\n } break;\n case 'AudioData':\n case 'VideoFrame':\n if (!isCallable(value.clone)) throwUnpolyfillable(type);\n try {\n cloned = value.clone();\n } catch (error) {\n throwUncloneable(type);\n } break;\n case 'CropTarget':\n case 'CryptoKey':\n case 'FileSystemDirectoryHandle':\n case 'FileSystemFileHandle':\n case 'FileSystemHandle':\n case 'GPUCompilationInfo':\n case 'GPUCompilationMessage':\n case 'ImageBitmap':\n case 'RTCCertificate':\n case 'WebAssembly.Module':\n throwUnpolyfillable(type);\n // break omitted\n default:\n throwUncloneable(type);\n }\n }\n\n mapSet(map, value, cloned);\n\n switch (type) {\n case 'Array':\n case 'Object':\n keys = objectKeys(value);\n for (i = 0, length = lengthOfArrayLike(keys); i < length; i++) {\n key = keys[i];\n createProperty(cloned, key, structuredCloneInternal(value[key], map));\n } break;\n case 'Map':\n value.forEach(function (v, k) {\n mapSet(cloned, structuredCloneInternal(k, map), structuredCloneInternal(v, map));\n });\n break;\n case 'Set':\n value.forEach(function (v) {\n setAdd(cloned, structuredCloneInternal(v, map));\n });\n break;\n case 'Error':\n createNonEnumerableProperty(cloned, 'message', structuredCloneInternal(value.message, map));\n if (hasOwn(value, 'cause')) {\n createNonEnumerableProperty(cloned, 'cause', structuredCloneInternal(value.cause, map));\n }\n if (name === 'AggregateError') {\n cloned.errors = structuredCloneInternal(value.errors, map);\n } else if (name === 'SuppressedError') {\n cloned.error = structuredCloneInternal(value.error, map);\n cloned.suppressed = structuredCloneInternal(value.suppressed, map);\n } // break omitted\n case 'DOMException':\n if (ERROR_STACK_INSTALLABLE) {\n createNonEnumerableProperty(cloned, 'stack', structuredCloneInternal(value.stack, map));\n }\n }\n\n return cloned;\n};\n\nvar tryToTransfer = function (rawTransfer, map) {\n if (!isObject(rawTransfer)) throw new TypeError('Transfer option cannot be converted to a sequence');\n\n var transfer = [];\n\n iterate(rawTransfer, function (value) {\n push(transfer, anObject(value));\n });\n\n var i = 0;\n var length = lengthOfArrayLike(transfer);\n var buffers = new Set();\n var value, type, C, transferred, canvas, context;\n\n while (i < length) {\n value = transfer[i++];\n type = classof(value);\n transferred = undefined;\n\n if (type === 'ArrayBuffer' ? setHas(buffers, value) : mapHas(map, value)) {\n throw new DOMException('Duplicate transferable', DATA_CLONE_ERROR);\n }\n\n if (type === 'ArrayBuffer') {\n setAdd(buffers, value);\n continue;\n }\n\n if (PROPER_STRUCTURED_CLONE_TRANSFER) {\n transferred = nativeStructuredClone(value, { transfer: [value] });\n } else switch (type) {\n case 'ImageBitmap':\n C = globalThis.OffscreenCanvas;\n if (!isConstructor(C)) throwUnpolyfillable(type, TRANSFERRING);\n try {\n canvas = new C(value.width, value.height);\n context = canvas.getContext('bitmaprenderer');\n context.transferFromImageBitmap(value);\n transferred = canvas.transferToImageBitmap();\n } catch (error) { /* empty */ }\n break;\n case 'AudioData':\n case 'VideoFrame':\n if (!isCallable(value.clone) || !isCallable(value.close)) throwUnpolyfillable(type, TRANSFERRING);\n try {\n transferred = value.clone();\n value.close();\n } catch (error) { /* empty */ }\n break;\n case 'MediaSourceHandle':\n case 'MessagePort':\n case 'MIDIAccess':\n case 'OffscreenCanvas':\n case 'ReadableStream':\n case 'RTCDataChannel':\n case 'TransformStream':\n case 'WebTransportReceiveStream':\n case 'WebTransportSendStream':\n case 'WritableStream':\n throwUnpolyfillable(type, TRANSFERRING);\n }\n\n if (transferred === undefined) throw new DOMException('This object cannot be transferred: ' + type, DATA_CLONE_ERROR);\n\n mapSet(map, value, transferred);\n }\n\n return buffers;\n};\n\nvar detachBuffers = function (buffers) {\n setIterate(buffers, function (buffer) {\n if (PROPER_STRUCTURED_CLONE_TRANSFER) {\n nativeStructuredClone(buffer, { transfer: [buffer] });\n } else if (isCallable(buffer.transfer)) {\n buffer.transfer();\n } else if (detachTransferable) {\n detachTransferable(buffer);\n } else {\n throwUnpolyfillable('ArrayBuffer', TRANSFERRING);\n }\n });\n};\n\n// `structuredClone` method\n// https://html.spec.whatwg.org/multipage/structured-data.html#dom-structuredclone\n$({ global: true, enumerable: true, sham: !PROPER_STRUCTURED_CLONE_TRANSFER, forced: FORCED_REPLACEMENT }, {\n structuredClone: function structuredClone(value /* , { transfer } */) {\n var options = validateArgumentsLength(arguments.length, 1) > 1 && !isNullOrUndefined(arguments[1]) ? anObject(arguments[1]) : undefined;\n var transfer = options ? options.transfer : undefined;\n var map, buffers;\n\n if (transfer !== undefined) {\n map = new Map();\n buffers = tryToTransfer(transfer, map);\n }\n\n var clone = structuredCloneInternal(value, map);\n\n // since of an issue with cloning views of transferred buffers, we a forced to detach them later\n // https://github.com/zloirock/core-js/issues/1265\n if (buffers) detachBuffers(buffers);\n\n return clone;\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar globalThis = require('../internals/global-this');\nvar schedulersFix = require('../internals/schedulers-fix');\n\nvar setInterval = schedulersFix(globalThis.setInterval, true);\n\n// Bun / IE9- setInterval additional parameters fix\n// https://html.spec.whatwg.org/multipage/timers-and-user-prompts.html#dom-setinterval\n$({ global: true, bind: true, forced: globalThis.setInterval !== setInterval }, {\n setInterval: setInterval\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar globalThis = require('../internals/global-this');\nvar schedulersFix = require('../internals/schedulers-fix');\n\nvar setTimeout = schedulersFix(globalThis.setTimeout, true);\n\n// Bun / IE9- setTimeout additional parameters fix\n// https://html.spec.whatwg.org/multipage/timers-and-user-prompts.html#dom-settimeout\n$({ global: true, bind: true, forced: globalThis.setTimeout !== setTimeout }, {\n setTimeout: setTimeout\n});\n", "'use strict';\n// TODO: Remove this module from `core-js@4` since it's split to modules listed below\nrequire('../modules/web.set-interval');\nrequire('../modules/web.set-timeout');\n", "'use strict';\nvar fails = require('../internals/fails');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\nvar DESCRIPTORS = require('../internals/descriptors');\nvar IS_PURE = require('../internals/is-pure');\n\nvar ITERATOR = wellKnownSymbol('iterator');\n\nmodule.exports = !fails(function () {\n // eslint-disable-next-line unicorn/relative-url-style -- required for testing\n var url = new URL('b?a=1&b=2&c=3', 'https://a');\n var params = url.searchParams;\n var params2 = new URLSearchParams('a=1&a=2&b=3');\n var result = '';\n url.pathname = 'c%20d';\n params.forEach(function (value, key) {\n params['delete']('b');\n result += key + value;\n });\n params2['delete']('a', 2);\n // `undefined` case is a Chromium 117 bug\n // https://bugs.chromium.org/p/v8/issues/detail?id=14222\n params2['delete']('b', undefined);\n return (IS_PURE && (!url.toJSON || !params2.has('a', 1) || params2.has('a', 2) || !params2.has('a', undefined) || params2.has('b')))\n || (!params.size && (IS_PURE || !DESCRIPTORS))\n || !params.sort\n || url.href !== 'https://a/c%20d?a=1&c=3'\n || params.get('c') !== '3'\n || String(new URLSearchParams('?a=1')) !== 'a=1'\n || !params[ITERATOR]\n // throws in Edge\n || new URL('https://a@b').username !== 'a'\n || new URLSearchParams(new URLSearchParams('a=b')).get('a') !== 'b'\n // not punycoded in Edge\n || new URL('https://\u0442\u0435\u0441\u0442').host !== 'xn--e1aybc'\n // not escaped in Chrome 62-\n || new URL('https://a#\u0431').hash !== '#%D0%B1'\n // fails in Chrome 66-\n || result !== 'a1c3'\n // throws in Safari\n || new URL('https://x', undefined).host !== 'x';\n});\n", "'use strict';\n// based on https://github.com/bestiejs/punycode.js/blob/master/punycode.js\nvar uncurryThis = require('../internals/function-uncurry-this');\n\nvar maxInt = 2147483647; // aka. 0x7FFFFFFF or 2^31-1\nvar base = 36;\nvar tMin = 1;\nvar tMax = 26;\nvar skew = 38;\nvar damp = 700;\nvar initialBias = 72;\nvar initialN = 128; // 0x80\nvar delimiter = '-'; // '\\x2D'\nvar regexNonASCII = /[^\\0-\\u007E]/; // non-ASCII chars\nvar regexSeparators = /[.\\u3002\\uFF0E\\uFF61]/g; // RFC 3490 separators\nvar OVERFLOW_ERROR = 'Overflow: input needs wider integers to process';\nvar baseMinusTMin = base - tMin;\n\nvar $RangeError = RangeError;\nvar exec = uncurryThis(regexSeparators.exec);\nvar floor = Math.floor;\nvar fromCharCode = String.fromCharCode;\nvar charCodeAt = uncurryThis(''.charCodeAt);\nvar join = uncurryThis([].join);\nvar push = uncurryThis([].push);\nvar replace = uncurryThis(''.replace);\nvar split = uncurryThis(''.split);\nvar toLowerCase = uncurryThis(''.toLowerCase);\n\n/**\n * Creates an array containing the numeric code points of each Unicode\n * character in the string. While JavaScript uses UCS-2 internally,\n * this function will convert a pair of surrogate halves (each of which\n * UCS-2 exposes as separate characters) into a single code point,\n * matching UTF-16.\n */\nvar ucs2decode = function (string) {\n var output = [];\n var counter = 0;\n var length = string.length;\n while (counter < length) {\n var value = charCodeAt(string, counter++);\n if (value >= 0xD800 && value <= 0xDBFF && counter < length) {\n // It's a high surrogate, and there is a next character.\n var extra = charCodeAt(string, counter++);\n if ((extra & 0xFC00) === 0xDC00) { // Low surrogate.\n push(output, ((value & 0x3FF) << 10) + (extra & 0x3FF) + 0x10000);\n } else {\n // It's an unmatched surrogate; only append this code unit, in case the\n // next code unit is the high surrogate of a surrogate pair.\n push(output, value);\n counter--;\n }\n } else {\n push(output, value);\n }\n }\n return output;\n};\n\n/**\n * Converts a digit/integer into a basic code point.\n */\nvar digitToBasic = function (digit) {\n // 0..25 map to ASCII a..z or A..Z\n // 26..35 map to ASCII 0..9\n return digit + 22 + 75 * (digit < 26);\n};\n\n/**\n * Bias adaptation function as per section 3.4 of RFC 3492.\n * https://tools.ietf.org/html/rfc3492#section-3.4\n */\nvar adapt = function (delta, numPoints, firstTime) {\n var k = 0;\n delta = firstTime ? floor(delta / damp) : delta >> 1;\n delta += floor(delta / numPoints);\n while (delta > baseMinusTMin * tMax >> 1) {\n delta = floor(delta / baseMinusTMin);\n k += base;\n }\n return floor(k + (baseMinusTMin + 1) * delta / (delta + skew));\n};\n\n/**\n * Converts a string of Unicode symbols (e.g. a domain name label) to a\n * Punycode string of ASCII-only symbols.\n */\nvar encode = function (input) {\n var output = [];\n\n // Convert the input in UCS-2 to an array of Unicode code points.\n input = ucs2decode(input);\n\n // Cache the length.\n var inputLength = input.length;\n\n // Initialize the state.\n var n = initialN;\n var delta = 0;\n var bias = initialBias;\n var i, currentValue;\n\n // Handle the basic code points.\n for (i = 0; i < input.length; i++) {\n currentValue = input[i];\n if (currentValue < 0x80) {\n push(output, fromCharCode(currentValue));\n }\n }\n\n var basicLength = output.length; // number of basic code points.\n var handledCPCount = basicLength; // number of code points that have been handled;\n\n // Finish the basic string with a delimiter unless it's empty.\n if (basicLength) {\n push(output, delimiter);\n }\n\n // Main encoding loop:\n while (handledCPCount < inputLength) {\n // All non-basic code points < n have been handled already. Find the next larger one:\n var m = maxInt;\n for (i = 0; i < input.length; i++) {\n currentValue = input[i];\n if (currentValue >= n && currentValue < m) {\n m = currentValue;\n }\n }\n\n // Increase `delta` enough to advance the decoder's state to , but guard against overflow.\n var handledCPCountPlusOne = handledCPCount + 1;\n if (m - n > floor((maxInt - delta) / handledCPCountPlusOne)) {\n throw new $RangeError(OVERFLOW_ERROR);\n }\n\n delta += (m - n) * handledCPCountPlusOne;\n n = m;\n\n for (i = 0; i < input.length; i++) {\n currentValue = input[i];\n if (currentValue < n && ++delta > maxInt) {\n throw new $RangeError(OVERFLOW_ERROR);\n }\n if (currentValue === n) {\n // Represent delta as a generalized variable-length integer.\n var q = delta;\n var k = base;\n while (true) {\n var t = k <= bias ? tMin : k >= bias + tMax ? tMax : k - bias;\n if (q < t) break;\n var qMinusT = q - t;\n var baseMinusT = base - t;\n push(output, fromCharCode(digitToBasic(t + qMinusT % baseMinusT)));\n q = floor(qMinusT / baseMinusT);\n k += base;\n }\n\n push(output, fromCharCode(digitToBasic(q)));\n bias = adapt(delta, handledCPCountPlusOne, handledCPCount === basicLength);\n delta = 0;\n handledCPCount++;\n }\n }\n\n delta++;\n n++;\n }\n return join(output, '');\n};\n\nmodule.exports = function (input) {\n var encoded = [];\n var labels = split(replace(toLowerCase(input), regexSeparators, '\\u002E'), '.');\n var i, label;\n for (i = 0; i < labels.length; i++) {\n label = labels[i];\n push(encoded, exec(regexNonASCII, label) ? 'xn--' + encode(label) : label);\n }\n return join(encoded, '.');\n};\n", "'use strict';\n// TODO: in core-js@4, move /modules/ dependencies to public entries for better optimization by tools like `preset-env`\nrequire('../modules/es.array.iterator');\nrequire('../modules/es.string.from-code-point');\nvar $ = require('../internals/export');\nvar globalThis = require('../internals/global-this');\nvar safeGetBuiltIn = require('../internals/safe-get-built-in');\nvar getBuiltIn = require('../internals/get-built-in');\nvar call = require('../internals/function-call');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar DESCRIPTORS = require('../internals/descriptors');\nvar USE_NATIVE_URL = require('../internals/url-constructor-detection');\nvar defineBuiltIn = require('../internals/define-built-in');\nvar defineBuiltInAccessor = require('../internals/define-built-in-accessor');\nvar defineBuiltIns = require('../internals/define-built-ins');\nvar setToStringTag = require('../internals/set-to-string-tag');\nvar createIteratorConstructor = require('../internals/iterator-create-constructor');\nvar InternalStateModule = require('../internals/internal-state');\nvar anInstance = require('../internals/an-instance');\nvar isCallable = require('../internals/is-callable');\nvar hasOwn = require('../internals/has-own-property');\nvar bind = require('../internals/function-bind-context');\nvar classof = require('../internals/classof');\nvar anObject = require('../internals/an-object');\nvar isObject = require('../internals/is-object');\nvar $toString = require('../internals/to-string');\nvar create = require('../internals/object-create');\nvar createPropertyDescriptor = require('../internals/create-property-descriptor');\nvar getIterator = require('../internals/get-iterator');\nvar getIteratorMethod = require('../internals/get-iterator-method');\nvar createIterResultObject = require('../internals/create-iter-result-object');\nvar validateArgumentsLength = require('../internals/validate-arguments-length');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\nvar arraySort = require('../internals/array-sort');\n\nvar ITERATOR = wellKnownSymbol('iterator');\nvar URL_SEARCH_PARAMS = 'URLSearchParams';\nvar URL_SEARCH_PARAMS_ITERATOR = URL_SEARCH_PARAMS + 'Iterator';\nvar setInternalState = InternalStateModule.set;\nvar getInternalParamsState = InternalStateModule.getterFor(URL_SEARCH_PARAMS);\nvar getInternalIteratorState = InternalStateModule.getterFor(URL_SEARCH_PARAMS_ITERATOR);\n\nvar nativeFetch = safeGetBuiltIn('fetch');\nvar NativeRequest = safeGetBuiltIn('Request');\nvar Headers = safeGetBuiltIn('Headers');\nvar RequestPrototype = NativeRequest && NativeRequest.prototype;\nvar HeadersPrototype = Headers && Headers.prototype;\nvar TypeError = globalThis.TypeError;\nvar encodeURIComponent = globalThis.encodeURIComponent;\nvar fromCharCode = String.fromCharCode;\nvar fromCodePoint = getBuiltIn('String', 'fromCodePoint');\nvar $parseInt = parseInt;\nvar charAt = uncurryThis(''.charAt);\nvar join = uncurryThis([].join);\nvar push = uncurryThis([].push);\nvar replace = uncurryThis(''.replace);\nvar shift = uncurryThis([].shift);\nvar splice = uncurryThis([].splice);\nvar split = uncurryThis(''.split);\nvar stringSlice = uncurryThis(''.slice);\nvar exec = uncurryThis(/./.exec);\n\nvar plus = /\\+/g;\nvar FALLBACK_REPLACER = '\\uFFFD';\nvar VALID_HEX = /^[0-9a-f]+$/i;\n\nvar parseHexOctet = function (string, start) {\n var substr = stringSlice(string, start, start + 2);\n if (!exec(VALID_HEX, substr)) return NaN;\n\n return $parseInt(substr, 16);\n};\n\nvar getLeadingOnes = function (octet) {\n var count = 0;\n for (var mask = 0x80; mask > 0 && (octet & mask) !== 0; mask >>= 1) {\n count++;\n }\n return count;\n};\n\nvar utf8Decode = function (octets) {\n var codePoint = null;\n var length = octets.length;\n\n switch (length) {\n case 1:\n codePoint = octets[0];\n break;\n case 2:\n codePoint = (octets[0] & 0x1F) << 6 | (octets[1] & 0x3F);\n break;\n case 3:\n codePoint = (octets[0] & 0x0F) << 12 | (octets[1] & 0x3F) << 6 | (octets[2] & 0x3F);\n break;\n case 4:\n codePoint = (octets[0] & 0x07) << 18 | (octets[1] & 0x3F) << 12 | (octets[2] & 0x3F) << 6 | (octets[3] & 0x3F);\n break;\n }\n\n // reject surrogates, overlong encodings, and out-of-range codepoints\n if (codePoint === null\n || codePoint > 0x10FFFF\n || (codePoint >= 0xD800 && codePoint <= 0xDFFF)\n || codePoint < (length > 3 ? 0x10000 : length > 2 ? 0x800 : length > 1 ? 0x80 : 0)\n ) return null;\n\n return codePoint;\n};\n\n/* eslint-disable max-statements, max-depth -- ok */\nvar decode = function (input) {\n input = replace(input, plus, ' ');\n var length = input.length;\n var result = '';\n var i = 0;\n\n while (i < length) {\n var decodedChar = charAt(input, i);\n\n if (decodedChar === '%') {\n if (charAt(input, i + 1) === '%' || i + 3 > length) {\n result += '%';\n i++;\n continue;\n }\n\n var octet = parseHexOctet(input, i + 1);\n\n // eslint-disable-next-line no-self-compare -- NaN check\n if (octet !== octet) {\n result += decodedChar;\n i++;\n continue;\n }\n\n i += 2;\n var byteSequenceLength = getLeadingOnes(octet);\n\n if (byteSequenceLength === 0) {\n decodedChar = fromCharCode(octet);\n } else {\n if (byteSequenceLength === 1 || byteSequenceLength > 4) {\n result += FALLBACK_REPLACER;\n i++;\n continue;\n }\n\n var octets = [octet];\n var sequenceIndex = 1;\n\n while (sequenceIndex < byteSequenceLength) {\n i++;\n if (i + 3 > length || charAt(input, i) !== '%') break;\n\n var nextByte = parseHexOctet(input, i + 1);\n\n // eslint-disable-next-line no-self-compare -- NaN check\n if (nextByte !== nextByte || nextByte > 191 || nextByte < 128) break;\n\n // https://encoding.spec.whatwg.org/#utf-8-decoder - position-specific byte ranges\n if (sequenceIndex === 1) {\n if (octet === 0xE0 && nextByte < 0xA0) break;\n if (octet === 0xED && nextByte > 0x9F) break;\n if (octet === 0xF0 && nextByte < 0x90) break;\n if (octet === 0xF4 && nextByte > 0x8F) break;\n }\n\n push(octets, nextByte);\n i += 2;\n sequenceIndex++;\n }\n\n if (octets.length !== byteSequenceLength) {\n result += FALLBACK_REPLACER;\n continue;\n }\n\n var codePoint = utf8Decode(octets);\n if (codePoint === null) {\n for (var replacement = 0; replacement < byteSequenceLength; replacement++) result += FALLBACK_REPLACER;\n i++;\n continue;\n } else {\n decodedChar = fromCodePoint(codePoint);\n }\n }\n }\n\n result += decodedChar;\n i++;\n }\n\n return result;\n};\n/* eslint-enable max-statements, max-depth -- ok */\n\nvar find = /[!'()~]|%20/g;\n\nvar replacements = {\n '!': '%21',\n \"'\": '%27',\n '(': '%28',\n ')': '%29',\n '~': '%7E',\n '%20': '+'\n};\n\nvar replacer = function (match) {\n return replacements[match];\n};\n\nvar serialize = function (it) {\n return replace(encodeURIComponent(it), find, replacer);\n};\n\nvar URLSearchParamsIterator = createIteratorConstructor(function Iterator(params, kind) {\n setInternalState(this, {\n type: URL_SEARCH_PARAMS_ITERATOR,\n target: getInternalParamsState(params).entries,\n index: 0,\n kind: kind\n });\n}, URL_SEARCH_PARAMS, function next() {\n var state = getInternalIteratorState(this);\n var target = state.target;\n var index = state.index++;\n if (!target || index >= target.length) {\n state.target = null;\n return createIterResultObject(undefined, true);\n }\n var entry = target[index];\n switch (state.kind) {\n case 'keys': return createIterResultObject(entry.key, false);\n case 'values': return createIterResultObject(entry.value, false);\n } return createIterResultObject([entry.key, entry.value], false);\n}, true);\n\nvar URLSearchParamsState = function (init) {\n this.entries = [];\n this.url = null;\n\n if (init !== undefined) {\n if (isObject(init)) this.parseObject(init);\n else this.parseQuery(typeof init == 'string' ? charAt(init, 0) === '?' ? stringSlice(init, 1) : init : $toString(init));\n }\n};\n\nURLSearchParamsState.prototype = {\n type: URL_SEARCH_PARAMS,\n bindURL: function (url) {\n this.url = url;\n this.update();\n },\n parseObject: function (object) {\n var entries = this.entries;\n var iteratorMethod = getIteratorMethod(object);\n var iterator, next, step, entryIterator, entryNext, first, second;\n\n if (iteratorMethod) {\n iterator = getIterator(object, iteratorMethod);\n next = iterator.next;\n while (!(step = call(next, iterator)).done) {\n entryIterator = getIterator(anObject(step.value));\n entryNext = entryIterator.next;\n if (\n (first = call(entryNext, entryIterator)).done ||\n (second = call(entryNext, entryIterator)).done ||\n !call(entryNext, entryIterator).done\n ) throw new TypeError('Expected sequence with length 2');\n push(entries, { key: $toString(first.value), value: $toString(second.value) });\n }\n } else for (var key in object) if (hasOwn(object, key)) {\n push(entries, { key: key, value: $toString(object[key]) });\n }\n },\n parseQuery: function (query) {\n if (query) {\n var entries = this.entries;\n var attributes = split(query, '&');\n var index = 0;\n var attribute, entry;\n while (index < attributes.length) {\n attribute = attributes[index++];\n if (attribute.length) {\n entry = split(attribute, '=');\n push(entries, {\n key: decode(shift(entry)),\n value: decode(join(entry, '='))\n });\n }\n }\n }\n },\n serialize: function () {\n var entries = this.entries;\n var result = [];\n var index = 0;\n var entry;\n while (index < entries.length) {\n entry = entries[index++];\n push(result, serialize(entry.key) + '=' + serialize(entry.value));\n } return join(result, '&');\n },\n update: function () {\n this.entries.length = 0;\n this.parseQuery(this.url.query);\n },\n updateURL: function () {\n if (this.url) this.url.update();\n }\n};\n\n// `URLSearchParams` constructor\n// https://url.spec.whatwg.org/#interface-urlsearchparams\nvar URLSearchParamsConstructor = function URLSearchParams(/* init */) {\n anInstance(this, URLSearchParamsPrototype);\n var init = arguments.length > 0 ? arguments[0] : undefined;\n var state = setInternalState(this, new URLSearchParamsState(init));\n if (!DESCRIPTORS) this.size = state.entries.length;\n};\n\nvar URLSearchParamsPrototype = URLSearchParamsConstructor.prototype;\n\ndefineBuiltIns(URLSearchParamsPrototype, {\n // `URLSearchParams.prototype.append` method\n // https://url.spec.whatwg.org/#dom-urlsearchparams-append\n append: function append(name, value) {\n var state = getInternalParamsState(this);\n validateArgumentsLength(arguments.length, 2);\n push(state.entries, { key: $toString(name), value: $toString(value) });\n if (!DESCRIPTORS) this.size++;\n state.updateURL();\n },\n // `URLSearchParams.prototype.delete` method\n // https://url.spec.whatwg.org/#dom-urlsearchparams-delete\n 'delete': function (name /* , value */) {\n var state = getInternalParamsState(this);\n var length = validateArgumentsLength(arguments.length, 1);\n var entries = state.entries;\n var key = $toString(name);\n var $value = length < 2 ? undefined : arguments[1];\n var value = $value === undefined ? $value : $toString($value);\n var index = 0;\n while (index < entries.length) {\n var entry = entries[index];\n if (entry.key === key && (value === undefined || entry.value === value)) {\n splice(entries, index, 1);\n } else index++;\n }\n if (!DESCRIPTORS) this.size = entries.length;\n state.updateURL();\n },\n // `URLSearchParams.prototype.get` method\n // https://url.spec.whatwg.org/#dom-urlsearchparams-get\n get: function get(name) {\n var entries = getInternalParamsState(this).entries;\n validateArgumentsLength(arguments.length, 1);\n var key = $toString(name);\n var index = 0;\n for (; index < entries.length; index++) {\n if (entries[index].key === key) return entries[index].value;\n }\n return null;\n },\n // `URLSearchParams.prototype.getAll` method\n // https://url.spec.whatwg.org/#dom-urlsearchparams-getall\n getAll: function getAll(name) {\n var entries = getInternalParamsState(this).entries;\n validateArgumentsLength(arguments.length, 1);\n var key = $toString(name);\n var result = [];\n var index = 0;\n for (; index < entries.length; index++) {\n if (entries[index].key === key) push(result, entries[index].value);\n }\n return result;\n },\n // `URLSearchParams.prototype.has` method\n // https://url.spec.whatwg.org/#dom-urlsearchparams-has\n has: function has(name /* , value */) {\n var entries = getInternalParamsState(this).entries;\n var length = validateArgumentsLength(arguments.length, 1);\n var key = $toString(name);\n var $value = length < 2 ? undefined : arguments[1];\n var value = $value === undefined ? $value : $toString($value);\n var index = 0;\n while (index < entries.length) {\n var entry = entries[index++];\n if (entry.key === key && (value === undefined || entry.value === value)) return true;\n }\n return false;\n },\n // `URLSearchParams.prototype.set` method\n // https://url.spec.whatwg.org/#dom-urlsearchparams-set\n set: function set(name, value) {\n var state = getInternalParamsState(this);\n validateArgumentsLength(arguments.length, 2);\n var entries = state.entries;\n var found = false;\n var key = $toString(name);\n var val = $toString(value);\n var index = 0;\n var entry;\n for (; index < entries.length; index++) {\n entry = entries[index];\n if (entry.key === key) {\n if (found) splice(entries, index--, 1);\n else {\n found = true;\n entry.value = val;\n }\n }\n }\n if (!found) push(entries, { key: key, value: val });\n if (!DESCRIPTORS) this.size = entries.length;\n state.updateURL();\n },\n // `URLSearchParams.prototype.sort` method\n // https://url.spec.whatwg.org/#dom-urlsearchparams-sort\n sort: function sort() {\n var state = getInternalParamsState(this);\n arraySort(state.entries, function (a, b) {\n return a.key > b.key ? 1 : -1;\n });\n state.updateURL();\n },\n // `URLSearchParams.prototype.forEach` method\n forEach: function forEach(callback /* , thisArg */) {\n var entries = getInternalParamsState(this).entries;\n var boundFunction = bind(callback, arguments.length > 1 ? arguments[1] : undefined);\n var index = 0;\n var entry;\n while (index < entries.length) {\n entry = entries[index++];\n boundFunction(entry.value, entry.key, this);\n }\n },\n // `URLSearchParams.prototype.keys` method\n keys: function keys() {\n return new URLSearchParamsIterator(this, 'keys');\n },\n // `URLSearchParams.prototype.values` method\n values: function values() {\n return new URLSearchParamsIterator(this, 'values');\n },\n // `URLSearchParams.prototype.entries` method\n entries: function entries() {\n return new URLSearchParamsIterator(this, 'entries');\n }\n}, { enumerable: true });\n\n// `URLSearchParams.prototype[@@iterator]` method\ndefineBuiltIn(URLSearchParamsPrototype, ITERATOR, URLSearchParamsPrototype.entries, { name: 'entries' });\n\n// `URLSearchParams.prototype.toString` method\n// https://url.spec.whatwg.org/#urlsearchparams-stringification-behavior\ndefineBuiltIn(URLSearchParamsPrototype, 'toString', function toString() {\n return getInternalParamsState(this).serialize();\n}, { enumerable: true });\n\n// `URLSearchParams.prototype.size` getter\n// https://url.spec.whatwg.org/#dom-urlsearchparams-size\nif (DESCRIPTORS) defineBuiltInAccessor(URLSearchParamsPrototype, 'size', {\n get: function size() {\n return getInternalParamsState(this).entries.length;\n },\n configurable: true,\n enumerable: true\n});\n\nsetToStringTag(URLSearchParamsConstructor, URL_SEARCH_PARAMS);\n\n$({ global: true, constructor: true, forced: !USE_NATIVE_URL }, {\n URLSearchParams: URLSearchParamsConstructor\n});\n\n// Wrap `fetch` and `Request` for correct work with polyfilled `URLSearchParams`\nif (!USE_NATIVE_URL && isCallable(Headers)) {\n var headersHas = uncurryThis(HeadersPrototype.has);\n var headersSet = uncurryThis(HeadersPrototype.set);\n\n var wrapRequestOptions = function (init) {\n if (isObject(init)) {\n var body = init.body;\n var headers;\n if (classof(body) === URL_SEARCH_PARAMS) {\n headers = init.headers ? new Headers(init.headers) : new Headers();\n if (!headersHas(headers, 'content-type')) {\n headersSet(headers, 'content-type', 'application/x-www-form-urlencoded;charset=UTF-8');\n }\n return create(init, {\n body: createPropertyDescriptor(0, $toString(body)),\n headers: createPropertyDescriptor(0, headers)\n });\n }\n } return init;\n };\n\n if (isCallable(nativeFetch)) {\n $({ global: true, enumerable: true, dontCallGetSet: true, forced: true }, {\n fetch: function fetch(input /* , init */) {\n return nativeFetch(input, arguments.length > 1 ? wrapRequestOptions(arguments[1]) : {});\n }\n });\n }\n\n if (isCallable(NativeRequest)) {\n var RequestConstructor = function Request(input /* , init */) {\n anInstance(this, RequestPrototype);\n return new NativeRequest(input, arguments.length > 1 ? wrapRequestOptions(arguments[1]) : {});\n };\n\n RequestPrototype.constructor = RequestConstructor;\n RequestConstructor.prototype = RequestPrototype;\n\n $({ global: true, constructor: true, dontCallGetSet: true, forced: true }, {\n Request: RequestConstructor\n });\n }\n}\n\nmodule.exports = {\n URLSearchParams: URLSearchParamsConstructor,\n getState: getInternalParamsState\n};\n", "'use strict';\n// TODO: in core-js@4, move /modules/ dependencies to public entries for better optimization by tools like `preset-env`\nrequire('../modules/es.string.iterator');\nvar $ = require('../internals/export');\nvar DESCRIPTORS = require('../internals/descriptors');\nvar USE_NATIVE_URL = require('../internals/url-constructor-detection');\nvar globalThis = require('../internals/global-this');\nvar bind = require('../internals/function-bind-context');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar defineBuiltIn = require('../internals/define-built-in');\nvar defineBuiltInAccessor = require('../internals/define-built-in-accessor');\nvar anInstance = require('../internals/an-instance');\nvar hasOwn = require('../internals/has-own-property');\nvar assign = require('../internals/object-assign');\nvar arrayFrom = require('../internals/array-from');\nvar arraySlice = require('../internals/array-slice');\nvar codeAt = require('../internals/string-multibyte').codeAt;\nvar toASCII = require('../internals/string-punycode-to-ascii');\nvar $toString = require('../internals/to-string');\nvar setToStringTag = require('../internals/set-to-string-tag');\nvar validateArgumentsLength = require('../internals/validate-arguments-length');\nvar URLSearchParamsModule = require('../modules/web.url-search-params.constructor');\nvar InternalStateModule = require('../internals/internal-state');\n\nvar setInternalState = InternalStateModule.set;\nvar getInternalURLState = InternalStateModule.getterFor('URL');\nvar URLSearchParams = URLSearchParamsModule.URLSearchParams;\nvar getInternalSearchParamsState = URLSearchParamsModule.getState;\n\nvar NativeURL = globalThis.URL;\nvar TypeError = globalThis.TypeError;\nvar encodeURIComponent = globalThis.encodeURIComponent;\nvar parseInt = globalThis.parseInt;\nvar floor = Math.floor;\nvar pow = Math.pow;\nvar charAt = uncurryThis(''.charAt);\nvar exec = uncurryThis(/./.exec);\nvar join = uncurryThis([].join);\nvar numberToString = uncurryThis(1.1.toString);\nvar pop = uncurryThis([].pop);\nvar push = uncurryThis([].push);\nvar replace = uncurryThis(''.replace);\nvar shift = uncurryThis([].shift);\nvar split = uncurryThis(''.split);\nvar stringSlice = uncurryThis(''.slice);\nvar toLowerCase = uncurryThis(''.toLowerCase);\nvar unshift = uncurryThis([].unshift);\n\nvar INVALID_AUTHORITY = 'Invalid authority';\nvar INVALID_SCHEME = 'Invalid scheme';\nvar INVALID_HOST = 'Invalid host';\nvar INVALID_PORT = 'Invalid port';\n\nvar ALPHA = /[a-z]/i;\nvar ALPHANUMERIC_PLUS_MINUS_DOT = /[\\d+\\-.a-z]/i;\nvar DIGIT = /\\d/;\nvar HEX_START = /^0x/i;\nvar OCT = /^[0-7]+$/;\nvar DEC = /^\\d+$/;\nvar HEX = /^[\\da-f]+$/i;\n/* eslint-disable regexp/no-control-character -- safe */\nvar FORBIDDEN_HOST_CODE_POINT = /[\\0\\t\\n\\r #%/:<>?@[\\\\\\]^|]/;\nvar FORBIDDEN_HOST_CODE_POINT_EXCLUDING_PERCENT = /[\\0\\t\\n\\r #/:<>?@[\\\\\\]^|]/;\nvar LEADING_C0_CONTROL_OR_SPACE = /^[\\u0000-\\u0020]+/;\nvar TRAILING_C0_CONTROL_OR_SPACE = /(^|[^\\u0000-\\u0020])[\\u0000-\\u0020]+$/;\nvar TAB_AND_NEW_LINE = /[\\t\\n\\r]/g;\n/* eslint-enable regexp/no-control-character -- safe */\n// eslint-disable-next-line no-unassigned-vars -- expected `undefined` value\nvar EOF;\n\n// https://url.spec.whatwg.org/#ends-in-a-number-checker\nvar endsInNumber = function (input) {\n var parts = split(input, '.');\n var last, hexPart;\n if (parts[parts.length - 1] === '') {\n if (parts.length === 1) return false;\n parts.length--;\n }\n last = parts[parts.length - 1];\n if (exec(DEC, last)) return true;\n if (exec(HEX_START, last)) {\n hexPart = stringSlice(last, 2);\n return hexPart === '' || !!exec(HEX, hexPart);\n }\n return false;\n};\n\n// https://url.spec.whatwg.org/#concept-ipv4-parser\nvar parseIPv4 = function (input) {\n var parts = split(input, '.');\n var partsLength, numbers, index, part, radix, number, ipv4;\n if (parts.length && parts[parts.length - 1] === '') {\n parts.length--;\n }\n partsLength = parts.length;\n if (partsLength > 4) return null;\n numbers = [];\n for (index = 0; index < partsLength; index++) {\n part = parts[index];\n if (part === '') return null;\n radix = 10;\n if (part.length > 1 && charAt(part, 0) === '0') {\n radix = exec(HEX_START, part) ? 16 : 8;\n part = stringSlice(part, radix === 8 ? 1 : 2);\n }\n if (part === '') {\n number = 0;\n } else {\n if (!exec(radix === 10 ? DEC : radix === 8 ? OCT : HEX, part)) return null;\n number = parseInt(part, radix);\n }\n push(numbers, number);\n }\n for (index = 0; index < partsLength; index++) {\n number = numbers[index];\n if (index === partsLength - 1) {\n if (number >= pow(256, 5 - partsLength)) return null;\n } else if (number > 255) return null;\n }\n ipv4 = pop(numbers);\n for (index = 0; index < numbers.length; index++) {\n ipv4 += numbers[index] * pow(256, 3 - index);\n }\n return ipv4;\n};\n\n// https://url.spec.whatwg.org/#concept-ipv6-parser\n// eslint-disable-next-line max-statements -- TODO\nvar parseIPv6 = function (input) {\n var address = [0, 0, 0, 0, 0, 0, 0, 0];\n var pieceIndex = 0;\n var compress = null;\n var pointer = 0;\n var value, length, numbersSeen, ipv4Piece, number, swaps, swap;\n\n var chr = function () {\n return charAt(input, pointer);\n };\n\n if (chr() === ':') {\n if (charAt(input, 1) !== ':') return;\n pointer += 2;\n pieceIndex++;\n compress = pieceIndex;\n }\n while (chr()) {\n if (pieceIndex === 8) return;\n if (chr() === ':') {\n if (compress !== null) return;\n pointer++;\n pieceIndex++;\n compress = pieceIndex;\n continue;\n }\n value = length = 0;\n while (length < 4 && exec(HEX, chr())) {\n value = value * 16 + parseInt(chr(), 16);\n pointer++;\n length++;\n }\n if (chr() === '.') {\n if (length === 0) return;\n pointer -= length;\n if (pieceIndex > 6) return;\n numbersSeen = 0;\n while (chr()) {\n ipv4Piece = null;\n if (numbersSeen > 0) {\n if (chr() === '.' && numbersSeen < 4) pointer++;\n else return;\n }\n if (!exec(DIGIT, chr())) return;\n while (exec(DIGIT, chr())) {\n number = parseInt(chr(), 10);\n if (ipv4Piece === null) ipv4Piece = number;\n else if (ipv4Piece === 0) return;\n else ipv4Piece = ipv4Piece * 10 + number;\n if (ipv4Piece > 255) return;\n pointer++;\n }\n address[pieceIndex] = address[pieceIndex] * 256 + ipv4Piece;\n numbersSeen++;\n if (numbersSeen === 2 || numbersSeen === 4) pieceIndex++;\n }\n if (numbersSeen !== 4) return;\n break;\n } else if (chr() === ':') {\n pointer++;\n if (!chr()) return;\n } else if (chr()) return;\n address[pieceIndex++] = value;\n }\n if (compress !== null) {\n swaps = pieceIndex - compress;\n pieceIndex = 7;\n while (pieceIndex !== 0 && swaps > 0) {\n swap = address[pieceIndex];\n address[pieceIndex--] = address[compress + swaps - 1];\n address[compress + --swaps] = swap;\n }\n } else if (pieceIndex !== 8) return;\n return address;\n};\n\nvar findLongestZeroSequence = function (ipv6) {\n var maxIndex = null;\n var maxLength = 1;\n var currStart = null;\n var currLength = 0;\n var index = 0;\n for (; index < 8; index++) {\n if (ipv6[index] !== 0) {\n if (currLength > maxLength) {\n maxIndex = currStart;\n maxLength = currLength;\n }\n currStart = null;\n currLength = 0;\n } else {\n if (currStart === null) currStart = index;\n ++currLength;\n }\n }\n return currLength > maxLength ? currStart : maxIndex;\n};\n\n// https://url.spec.whatwg.org/#host-serializing\nvar serializeHost = function (host) {\n var result, index, compress, ignore0;\n\n // ipv4\n if (typeof host == 'number') {\n result = [];\n for (index = 0; index < 4; index++) {\n unshift(result, host % 256);\n host = floor(host / 256);\n }\n return join(result, '.');\n }\n\n // ipv6\n if (typeof host == 'object') {\n result = '';\n compress = findLongestZeroSequence(host);\n for (index = 0; index < 8; index++) {\n if (ignore0 && host[index] === 0) continue;\n if (ignore0) ignore0 = false;\n if (compress === index) {\n result += index ? ':' : '::';\n ignore0 = true;\n } else {\n result += numberToString(host[index], 16);\n if (index < 7) result += ':';\n }\n }\n return '[' + result + ']';\n }\n\n return host;\n};\n\nvar C0ControlPercentEncodeSet = {};\nvar queryPercentEncodeSet = assign({}, C0ControlPercentEncodeSet, {\n ' ': 1, '\"': 1, '#': 1, '<': 1, '>': 1\n});\nvar specialQueryPercentEncodeSet = assign({}, queryPercentEncodeSet, {\n \"'\": 1\n});\nvar fragmentPercentEncodeSet = assign({}, C0ControlPercentEncodeSet, {\n ' ': 1, '\"': 1, '<': 1, '>': 1, '`': 1\n});\nvar pathPercentEncodeSet = assign({}, fragmentPercentEncodeSet, {\n '#': 1, '?': 1, '{': 1, '}': 1, '^': 1\n});\nvar userinfoPercentEncodeSet = assign({}, pathPercentEncodeSet, {\n '/': 1, ':': 1, ';': 1, '=': 1, '@': 1, '[': 1, '\\\\': 1, ']': 1, '^': 1, '|': 1\n});\n\nvar percentEncode = function (chr, set) {\n var code = codeAt(chr, 0);\n // encodeURIComponent does not encode ', which is in the special-query percent-encode set\n return code >= 0x20 && code < 0x7F && !hasOwn(set, chr) ? chr : chr === \"'\" && hasOwn(set, chr) ? '%27' : encodeURIComponent(chr);\n};\n\n// https://url.spec.whatwg.org/#special-scheme\nvar specialSchemes = {\n ftp: 21,\n file: null,\n http: 80,\n https: 443,\n ws: 80,\n wss: 443\n};\n\n// https://url.spec.whatwg.org/#windows-drive-letter\nvar isWindowsDriveLetter = function (string, normalized) {\n var second;\n return string.length === 2 && exec(ALPHA, charAt(string, 0))\n && ((second = charAt(string, 1)) === ':' || (!normalized && second === '|'));\n};\n\n// https://url.spec.whatwg.org/#start-with-a-windows-drive-letter\nvar startsWithWindowsDriveLetter = function (string) {\n var third;\n return string.length > 1 && isWindowsDriveLetter(stringSlice(string, 0, 2)) && (\n string.length === 2 ||\n ((third = charAt(string, 2)) === '/' || third === '\\\\' || third === '?' || third === '#')\n );\n};\n\n// https://url.spec.whatwg.org/#single-dot-path-segment\nvar isSingleDot = function (segment) {\n return segment === '.' || toLowerCase(segment) === '%2e';\n};\n\n// https://url.spec.whatwg.org/#double-dot-path-segment\nvar isDoubleDot = function (segment) {\n segment = toLowerCase(segment);\n return segment === '..' || segment === '%2e.' || segment === '.%2e' || segment === '%2e%2e';\n};\n\n// States:\nvar SCHEME_START = {};\nvar SCHEME = {};\nvar NO_SCHEME = {};\nvar SPECIAL_RELATIVE_OR_AUTHORITY = {};\nvar PATH_OR_AUTHORITY = {};\nvar RELATIVE = {};\nvar RELATIVE_SLASH = {};\nvar SPECIAL_AUTHORITY_SLASHES = {};\nvar SPECIAL_AUTHORITY_IGNORE_SLASHES = {};\nvar AUTHORITY = {};\nvar HOST = {};\nvar HOSTNAME = {};\nvar PORT = {};\nvar FILE = {};\nvar FILE_SLASH = {};\nvar FILE_HOST = {};\nvar PATH_START = {};\nvar PATH = {};\nvar CANNOT_BE_A_BASE_URL_PATH = {};\nvar QUERY = {};\nvar FRAGMENT = {};\n\nvar URLState = function (url, isBase, base) {\n var urlString = $toString(url);\n var baseState, failure, searchParams;\n if (isBase) {\n failure = this.parse(urlString);\n if (failure) throw new TypeError(failure);\n this.searchParams = null;\n } else {\n if (base !== undefined) baseState = new URLState(base, true);\n failure = this.parse(urlString, null, baseState);\n if (failure) throw new TypeError(failure);\n searchParams = getInternalSearchParamsState(new URLSearchParams());\n searchParams.bindURL(this);\n this.searchParams = searchParams;\n }\n};\n\nURLState.prototype = {\n type: 'URL',\n // https://url.spec.whatwg.org/#url-parsing\n // eslint-disable-next-line max-statements -- TODO\n parse: function (input, stateOverride, base) {\n var url = this;\n var state = stateOverride || SCHEME_START;\n var pointer = 0;\n var buffer = '';\n var seenAt = false;\n var seenBracket = false;\n var seenPasswordToken = false;\n var codePoints, chr, bufferCodePoints, failure;\n\n input = $toString(input);\n\n if (!stateOverride) {\n url.scheme = '';\n url.username = '';\n url.password = '';\n url.host = null;\n url.port = null;\n url.path = [];\n url.query = null;\n url.fragment = null;\n url.cannotBeABaseURL = false;\n input = replace(input, LEADING_C0_CONTROL_OR_SPACE, '');\n input = replace(input, TRAILING_C0_CONTROL_OR_SPACE, '$1');\n }\n\n input = replace(input, TAB_AND_NEW_LINE, '');\n\n codePoints = arrayFrom(input);\n\n while (pointer <= codePoints.length) {\n chr = codePoints[pointer];\n switch (state) {\n case SCHEME_START:\n if (chr && exec(ALPHA, chr)) {\n buffer += toLowerCase(chr);\n state = SCHEME;\n } else if (!stateOverride) {\n state = NO_SCHEME;\n continue;\n } else return INVALID_SCHEME;\n break;\n\n case SCHEME:\n if (chr && exec(ALPHANUMERIC_PLUS_MINUS_DOT, chr)) {\n buffer += toLowerCase(chr);\n } else if (chr === ':') {\n if (stateOverride && (\n (url.isSpecial() !== hasOwn(specialSchemes, buffer)) ||\n (buffer === 'file' && (url.includesCredentials() || url.port !== null)) ||\n (url.scheme === 'file' && url.host === '')\n )) return;\n url.scheme = buffer;\n if (stateOverride) {\n if (url.isSpecial() && specialSchemes[url.scheme] === url.port) url.port = null;\n return;\n }\n buffer = '';\n if (url.scheme === 'file') {\n state = FILE;\n } else if (url.isSpecial() && base && base.scheme === url.scheme) {\n state = SPECIAL_RELATIVE_OR_AUTHORITY;\n } else if (url.isSpecial()) {\n state = SPECIAL_AUTHORITY_SLASHES;\n } else if (codePoints[pointer + 1] === '/') {\n state = PATH_OR_AUTHORITY;\n pointer++;\n } else {\n url.cannotBeABaseURL = true;\n push(url.path, '');\n state = CANNOT_BE_A_BASE_URL_PATH;\n }\n } else if (!stateOverride) {\n buffer = '';\n state = NO_SCHEME;\n pointer = 0;\n continue;\n } else return INVALID_SCHEME;\n break;\n\n case NO_SCHEME:\n if (!base || (base.cannotBeABaseURL && chr !== '#')) return INVALID_SCHEME;\n if (base.cannotBeABaseURL && chr === '#') {\n url.scheme = base.scheme;\n url.path = arraySlice(base.path);\n url.query = base.query;\n url.fragment = '';\n url.cannotBeABaseURL = true;\n state = FRAGMENT;\n break;\n }\n state = base.scheme === 'file' ? FILE : RELATIVE;\n continue;\n\n case SPECIAL_RELATIVE_OR_AUTHORITY:\n if (chr === '/' && codePoints[pointer + 1] === '/') {\n state = SPECIAL_AUTHORITY_IGNORE_SLASHES;\n pointer++;\n } else {\n state = RELATIVE;\n continue;\n } break;\n\n case PATH_OR_AUTHORITY:\n if (chr === '/') {\n state = AUTHORITY;\n break;\n } else {\n state = PATH;\n continue;\n }\n\n case RELATIVE:\n url.scheme = base.scheme;\n if (chr === EOF) {\n url.username = base.username;\n url.password = base.password;\n url.host = base.host;\n url.port = base.port;\n url.path = arraySlice(base.path);\n url.query = base.query;\n } else if (chr === '/' || (chr === '\\\\' && url.isSpecial())) {\n state = RELATIVE_SLASH;\n } else if (chr === '?') {\n url.username = base.username;\n url.password = base.password;\n url.host = base.host;\n url.port = base.port;\n url.path = arraySlice(base.path);\n url.query = '';\n state = QUERY;\n } else if (chr === '#') {\n url.username = base.username;\n url.password = base.password;\n url.host = base.host;\n url.port = base.port;\n url.path = arraySlice(base.path);\n url.query = base.query;\n url.fragment = '';\n state = FRAGMENT;\n } else {\n url.username = base.username;\n url.password = base.password;\n url.host = base.host;\n url.port = base.port;\n url.path = arraySlice(base.path);\n if (url.path.length) url.path.length--;\n state = PATH;\n continue;\n } break;\n\n case RELATIVE_SLASH:\n if (url.isSpecial() && (chr === '/' || chr === '\\\\')) {\n state = SPECIAL_AUTHORITY_IGNORE_SLASHES;\n } else if (chr === '/') {\n state = AUTHORITY;\n } else {\n url.username = base.username;\n url.password = base.password;\n url.host = base.host;\n url.port = base.port;\n state = PATH;\n continue;\n } break;\n\n case SPECIAL_AUTHORITY_SLASHES:\n state = SPECIAL_AUTHORITY_IGNORE_SLASHES;\n if (chr !== '/' || codePoints[pointer + 1] !== '/') continue;\n pointer++;\n break;\n\n case SPECIAL_AUTHORITY_IGNORE_SLASHES:\n if (chr !== '/' && chr !== '\\\\') {\n state = AUTHORITY;\n continue;\n } break;\n\n case AUTHORITY:\n if (chr === '@') {\n if (seenAt) buffer = '%40' + buffer;\n seenAt = true;\n bufferCodePoints = arrayFrom(buffer);\n for (var i = 0; i < bufferCodePoints.length; i++) {\n var codePoint = bufferCodePoints[i];\n if (codePoint === ':' && !seenPasswordToken) {\n seenPasswordToken = true;\n continue;\n }\n var encodedCodePoints = percentEncode(codePoint, userinfoPercentEncodeSet);\n if (seenPasswordToken) url.password += encodedCodePoints;\n else url.username += encodedCodePoints;\n }\n buffer = '';\n } else if (\n chr === EOF || chr === '/' || chr === '?' || chr === '#' ||\n (chr === '\\\\' && url.isSpecial())\n ) {\n if (seenAt && buffer === '') return INVALID_AUTHORITY;\n pointer -= arrayFrom(buffer).length + 1;\n buffer = '';\n state = HOST;\n } else buffer += chr;\n break;\n\n case HOST:\n case HOSTNAME:\n if (stateOverride && url.scheme === 'file') {\n state = FILE_HOST;\n continue;\n } else if (chr === ':' && !seenBracket) {\n if (buffer === '') return INVALID_HOST;\n if (stateOverride === HOSTNAME) return;\n failure = url.parseHost(buffer);\n if (failure) return failure;\n buffer = '';\n state = PORT;\n } else if (\n chr === EOF || chr === '/' || chr === '?' || chr === '#' ||\n (chr === '\\\\' && url.isSpecial())\n ) {\n if (url.isSpecial() && buffer === '') return INVALID_HOST;\n if (stateOverride && buffer === '' && (url.includesCredentials() || url.port !== null)) return;\n failure = url.parseHost(buffer);\n if (failure) return failure;\n buffer = '';\n state = PATH_START;\n if (stateOverride) return;\n continue;\n } else {\n if (chr === '[') seenBracket = true;\n else if (chr === ']') seenBracket = false;\n buffer += chr;\n } break;\n\n case PORT:\n if (exec(DIGIT, chr)) {\n buffer += chr;\n } else if (\n chr === EOF || chr === '/' || chr === '?' || chr === '#' ||\n (chr === '\\\\' && url.isSpecial()) ||\n stateOverride\n ) {\n if (buffer !== '') {\n var port = parseInt(buffer, 10);\n if (port > 0xFFFF) return INVALID_PORT;\n url.port = (url.isSpecial() && port === specialSchemes[url.scheme]) ? null : port;\n buffer = '';\n }\n if (stateOverride) return;\n state = PATH_START;\n continue;\n } else return INVALID_PORT;\n break;\n\n case FILE:\n url.scheme = 'file';\n url.host = '';\n if (chr === '/' || chr === '\\\\') state = FILE_SLASH;\n else if (base && base.scheme === 'file') {\n switch (chr) {\n case EOF:\n url.host = base.host;\n url.path = arraySlice(base.path);\n url.query = base.query;\n break;\n case '?':\n url.host = base.host;\n url.path = arraySlice(base.path);\n url.query = '';\n state = QUERY;\n break;\n case '#':\n url.host = base.host;\n url.path = arraySlice(base.path);\n url.query = base.query;\n url.fragment = '';\n state = FRAGMENT;\n break;\n default:\n url.host = base.host;\n if (!startsWithWindowsDriveLetter(join(arraySlice(codePoints, pointer), ''))) {\n url.path = arraySlice(base.path);\n url.shortenPath();\n }\n state = PATH;\n continue;\n }\n } else {\n state = PATH;\n continue;\n } break;\n\n case FILE_SLASH:\n if (chr === '/' || chr === '\\\\') {\n state = FILE_HOST;\n break;\n }\n if (base && base.scheme === 'file') {\n url.host = base.host;\n if (!startsWithWindowsDriveLetter(join(arraySlice(codePoints, pointer), ''))\n && isWindowsDriveLetter(base.path[0], true)) push(url.path, base.path[0]);\n }\n state = PATH;\n continue;\n\n case FILE_HOST:\n if (chr === EOF || chr === '/' || chr === '\\\\' || chr === '?' || chr === '#') {\n if (!stateOverride && isWindowsDriveLetter(buffer)) {\n state = PATH;\n } else if (buffer === '') {\n url.host = '';\n if (stateOverride) return;\n state = PATH_START;\n } else {\n failure = url.parseHost(buffer);\n if (failure) return failure;\n if (url.host === 'localhost') url.host = '';\n if (stateOverride) return;\n buffer = '';\n state = PATH_START;\n } continue;\n } else buffer += chr;\n break;\n\n case PATH_START:\n if (url.isSpecial()) {\n state = PATH;\n if (chr !== '/' && chr !== '\\\\') continue;\n } else if (!stateOverride && chr === '?') {\n url.query = '';\n state = QUERY;\n } else if (!stateOverride && chr === '#') {\n url.fragment = '';\n state = FRAGMENT;\n } else if (chr !== EOF) {\n state = PATH;\n if (chr !== '/') continue;\n } break;\n\n case PATH:\n if (\n chr === EOF || chr === '/' ||\n (chr === '\\\\' && url.isSpecial()) ||\n (!stateOverride && (chr === '?' || chr === '#'))\n ) {\n if (isDoubleDot(buffer)) {\n url.shortenPath();\n if (chr !== '/' && !(chr === '\\\\' && url.isSpecial())) {\n push(url.path, '');\n }\n } else if (isSingleDot(buffer)) {\n if (chr !== '/' && !(chr === '\\\\' && url.isSpecial())) {\n push(url.path, '');\n }\n } else {\n if (url.scheme === 'file' && !url.path.length && isWindowsDriveLetter(buffer)) {\n if (url.host !== null && url.host !== '') url.host = '';\n buffer = charAt(buffer, 0) + ':'; // normalize windows drive letter\n }\n push(url.path, buffer);\n }\n buffer = '';\n if (url.scheme === 'file' && (chr === EOF || chr === '?' || chr === '#')) {\n while (url.path.length > 1 && url.path[0] === '') {\n shift(url.path);\n }\n }\n if (chr === '?') {\n url.query = '';\n state = QUERY;\n } else if (chr === '#') {\n url.fragment = '';\n state = FRAGMENT;\n }\n } else {\n buffer += percentEncode(chr, pathPercentEncodeSet);\n } break;\n\n case CANNOT_BE_A_BASE_URL_PATH:\n if (chr === '?') {\n url.query = '';\n state = QUERY;\n } else if (chr === '#') {\n url.fragment = '';\n state = FRAGMENT;\n } else if (chr !== EOF) {\n url.path[0] += percentEncode(chr, C0ControlPercentEncodeSet);\n } break;\n\n case QUERY:\n if (!stateOverride && chr === '#') {\n url.fragment = '';\n state = FRAGMENT;\n } else if (chr !== EOF) {\n url.query += percentEncode(chr, url.isSpecial() ? specialQueryPercentEncodeSet : queryPercentEncodeSet);\n } break;\n\n case FRAGMENT:\n if (chr !== EOF) url.fragment += percentEncode(chr, fragmentPercentEncodeSet);\n break;\n }\n\n pointer++;\n }\n },\n // https://url.spec.whatwg.org/#host-parsing\n parseHost: function (input) {\n var result, codePoints, index;\n if (charAt(input, 0) === '[') {\n if (charAt(input, input.length - 1) !== ']') return INVALID_HOST;\n result = parseIPv6(stringSlice(input, 1, -1));\n if (!result) return INVALID_HOST;\n this.host = result;\n // opaque host\n } else if (!this.isSpecial()) {\n if (exec(FORBIDDEN_HOST_CODE_POINT_EXCLUDING_PERCENT, input)) return INVALID_HOST;\n result = '';\n codePoints = arrayFrom(input);\n for (index = 0; index < codePoints.length; index++) {\n result += percentEncode(codePoints[index], C0ControlPercentEncodeSet);\n }\n this.host = result;\n } else {\n input = toASCII(input);\n if (exec(FORBIDDEN_HOST_CODE_POINT, input)) return INVALID_HOST;\n if (endsInNumber(input)) {\n result = parseIPv4(input);\n if (result === null) return INVALID_HOST;\n this.host = result;\n } else {\n this.host = input;\n }\n }\n },\n // https://url.spec.whatwg.org/#cannot-have-a-username-password-port\n cannotHaveUsernamePasswordPort: function () {\n return this.host === null || this.host === '' || this.cannotBeABaseURL || this.scheme === 'file';\n },\n // https://url.spec.whatwg.org/#include-credentials\n includesCredentials: function () {\n return this.username !== '' || this.password !== '';\n },\n // https://url.spec.whatwg.org/#is-special\n isSpecial: function () {\n return hasOwn(specialSchemes, this.scheme);\n },\n // https://url.spec.whatwg.org/#shorten-a-urls-path\n shortenPath: function () {\n var path = this.path;\n var pathSize = path.length;\n if (pathSize && (this.scheme !== 'file' || pathSize !== 1 || !isWindowsDriveLetter(path[0], true))) {\n path.length--;\n }\n },\n // https://url.spec.whatwg.org/#concept-url-serializer\n serialize: function () {\n var url = this;\n var scheme = url.scheme;\n var username = url.username;\n var password = url.password;\n var host = url.host;\n var port = url.port;\n var path = url.path;\n var query = url.query;\n var fragment = url.fragment;\n var output = scheme + ':';\n if (host !== null) {\n output += '//';\n if (url.includesCredentials()) {\n output += username + (password ? ':' + password : '') + '@';\n }\n output += serializeHost(host);\n if (port !== null) output += ':' + port;\n } else if (scheme === 'file') output += '//';\n if (host === null && !url.cannotBeABaseURL && path.length > 1 && path[0] === '') output += '/.';\n output += url.cannotBeABaseURL ? path[0] : path.length ? '/' + join(path, '/') : '';\n if (query !== null) output += '?' + query;\n if (fragment !== null) output += '#' + fragment;\n return output;\n },\n // https://url.spec.whatwg.org/#dom-url-href\n setHref: function (href) {\n var failure = this.parse(href);\n if (failure) throw new TypeError(failure);\n this.searchParams.update();\n },\n // https://url.spec.whatwg.org/#dom-url-origin\n getOrigin: function () {\n var scheme = this.scheme;\n var port = this.port;\n if (scheme === 'blob') try {\n return new URLConstructor(this.path[0]).origin;\n } catch (error) {\n return 'null';\n }\n if (scheme === 'file' || !this.isSpecial()) return 'null';\n return scheme + '://' + serializeHost(this.host) + (port !== null ? ':' + port : '');\n },\n // https://url.spec.whatwg.org/#dom-url-protocol\n getProtocol: function () {\n return this.scheme + ':';\n },\n setProtocol: function (protocol) {\n this.parse($toString(protocol) + ':', SCHEME_START);\n },\n // https://url.spec.whatwg.org/#dom-url-username\n getUsername: function () {\n return this.username;\n },\n setUsername: function (username) {\n var codePoints = arrayFrom($toString(username));\n if (this.cannotHaveUsernamePasswordPort()) return;\n this.username = '';\n for (var i = 0; i < codePoints.length; i++) {\n this.username += percentEncode(codePoints[i], userinfoPercentEncodeSet);\n }\n },\n // https://url.spec.whatwg.org/#dom-url-password\n getPassword: function () {\n return this.password;\n },\n setPassword: function (password) {\n var codePoints = arrayFrom($toString(password));\n if (this.cannotHaveUsernamePasswordPort()) return;\n this.password = '';\n for (var i = 0; i < codePoints.length; i++) {\n this.password += percentEncode(codePoints[i], userinfoPercentEncodeSet);\n }\n },\n // https://url.spec.whatwg.org/#dom-url-host\n getHost: function () {\n var host = this.host;\n var port = this.port;\n return host === null ? ''\n : port === null ? serializeHost(host)\n : serializeHost(host) + ':' + port;\n },\n setHost: function (host) {\n if (this.cannotBeABaseURL) return;\n this.parse(host, HOST);\n },\n // https://url.spec.whatwg.org/#dom-url-hostname\n getHostname: function () {\n var host = this.host;\n return host === null ? '' : serializeHost(host);\n },\n setHostname: function (hostname) {\n if (this.cannotBeABaseURL) return;\n this.parse(hostname, HOSTNAME);\n },\n // https://url.spec.whatwg.org/#dom-url-port\n getPort: function () {\n var port = this.port;\n return port === null ? '' : $toString(port);\n },\n setPort: function (port) {\n if (this.cannotHaveUsernamePasswordPort()) return;\n port = $toString(port);\n if (port === '') this.port = null;\n else this.parse(port, PORT);\n },\n // https://url.spec.whatwg.org/#dom-url-pathname\n getPathname: function () {\n var path = this.path;\n return this.cannotBeABaseURL ? path[0] : path.length ? '/' + join(path, '/') : '';\n },\n setPathname: function (pathname) {\n if (this.cannotBeABaseURL) return;\n this.path = [];\n this.parse(pathname, PATH_START);\n },\n // https://url.spec.whatwg.org/#dom-url-search\n getSearch: function () {\n var query = this.query;\n return query ? '?' + query : '';\n },\n setSearch: function (search) {\n search = $toString(search);\n if (search === '') {\n this.query = null;\n } else {\n if (charAt(search, 0) === '?') search = stringSlice(search, 1);\n this.query = '';\n this.parse(search, QUERY);\n }\n this.searchParams.update();\n },\n // https://url.spec.whatwg.org/#dom-url-searchparams\n getSearchParams: function () {\n return this.searchParams.facade;\n },\n // https://url.spec.whatwg.org/#dom-url-hash\n getHash: function () {\n var fragment = this.fragment;\n return fragment ? '#' + fragment : '';\n },\n setHash: function (hash) {\n hash = $toString(hash);\n if (hash === '') {\n this.fragment = null;\n return;\n }\n if (charAt(hash, 0) === '#') hash = stringSlice(hash, 1);\n this.fragment = '';\n this.parse(hash, FRAGMENT);\n },\n update: function () {\n this.query = this.searchParams.serialize() || null;\n }\n};\n\n// `URL` constructor\n// https://url.spec.whatwg.org/#url-class\nvar URLConstructor = function URL(url /* , base */) {\n var that = anInstance(this, URLPrototype);\n var base = validateArgumentsLength(arguments.length, 1) > 1 ? arguments[1] : undefined;\n var state = setInternalState(that, new URLState(url, false, base));\n if (!DESCRIPTORS) {\n that.href = state.serialize();\n that.origin = state.getOrigin();\n that.protocol = state.getProtocol();\n that.username = state.getUsername();\n that.password = state.getPassword();\n that.host = state.getHost();\n that.hostname = state.getHostname();\n that.port = state.getPort();\n that.pathname = state.getPathname();\n that.search = state.getSearch();\n that.searchParams = state.getSearchParams();\n that.hash = state.getHash();\n }\n};\n\nvar URLPrototype = URLConstructor.prototype;\n\nvar accessorDescriptor = function (getter, setter) {\n return {\n get: function () {\n return getInternalURLState(this)[getter]();\n },\n set: setter && function (value) {\n return getInternalURLState(this)[setter](value);\n },\n configurable: true,\n enumerable: true\n };\n};\n\nif (DESCRIPTORS) {\n // `URL.prototype.href` accessors pair\n // https://url.spec.whatwg.org/#dom-url-href\n defineBuiltInAccessor(URLPrototype, 'href', accessorDescriptor('serialize', 'setHref'));\n // `URL.prototype.origin` getter\n // https://url.spec.whatwg.org/#dom-url-origin\n defineBuiltInAccessor(URLPrototype, 'origin', accessorDescriptor('getOrigin'));\n // `URL.prototype.protocol` accessors pair\n // https://url.spec.whatwg.org/#dom-url-protocol\n defineBuiltInAccessor(URLPrototype, 'protocol', accessorDescriptor('getProtocol', 'setProtocol'));\n // `URL.prototype.username` accessors pair\n // https://url.spec.whatwg.org/#dom-url-username\n defineBuiltInAccessor(URLPrototype, 'username', accessorDescriptor('getUsername', 'setUsername'));\n // `URL.prototype.password` accessors pair\n // https://url.spec.whatwg.org/#dom-url-password\n defineBuiltInAccessor(URLPrototype, 'password', accessorDescriptor('getPassword', 'setPassword'));\n // `URL.prototype.host` accessors pair\n // https://url.spec.whatwg.org/#dom-url-host\n defineBuiltInAccessor(URLPrototype, 'host', accessorDescriptor('getHost', 'setHost'));\n // `URL.prototype.hostname` accessors pair\n // https://url.spec.whatwg.org/#dom-url-hostname\n defineBuiltInAccessor(URLPrototype, 'hostname', accessorDescriptor('getHostname', 'setHostname'));\n // `URL.prototype.port` accessors pair\n // https://url.spec.whatwg.org/#dom-url-port\n defineBuiltInAccessor(URLPrototype, 'port', accessorDescriptor('getPort', 'setPort'));\n // `URL.prototype.pathname` accessors pair\n // https://url.spec.whatwg.org/#dom-url-pathname\n defineBuiltInAccessor(URLPrototype, 'pathname', accessorDescriptor('getPathname', 'setPathname'));\n // `URL.prototype.search` accessors pair\n // https://url.spec.whatwg.org/#dom-url-search\n defineBuiltInAccessor(URLPrototype, 'search', accessorDescriptor('getSearch', 'setSearch'));\n // `URL.prototype.searchParams` getter\n // https://url.spec.whatwg.org/#dom-url-searchparams\n defineBuiltInAccessor(URLPrototype, 'searchParams', accessorDescriptor('getSearchParams'));\n // `URL.prototype.hash` accessors pair\n // https://url.spec.whatwg.org/#dom-url-hash\n defineBuiltInAccessor(URLPrototype, 'hash', accessorDescriptor('getHash', 'setHash'));\n}\n\n// `URL.prototype.toJSON` method\n// https://url.spec.whatwg.org/#dom-url-tojson\ndefineBuiltIn(URLPrototype, 'toJSON', function toJSON() {\n return getInternalURLState(this).serialize();\n}, { enumerable: true });\n\n// `URL.prototype.toString` method\n// https://url.spec.whatwg.org/#URL-stringification-behavior\ndefineBuiltIn(URLPrototype, 'toString', function toString() {\n return getInternalURLState(this).serialize();\n}, { enumerable: true });\n\nif (NativeURL) {\n var nativeCreateObjectURL = NativeURL.createObjectURL;\n var nativeRevokeObjectURL = NativeURL.revokeObjectURL;\n // `URL.createObjectURL` method\n // https://developer.mozilla.org/en-US/docs/Web/API/URL/createObjectURL\n if (nativeCreateObjectURL) defineBuiltIn(URLConstructor, 'createObjectURL', bind(nativeCreateObjectURL, NativeURL));\n // `URL.revokeObjectURL` method\n // https://developer.mozilla.org/en-US/docs/Web/API/URL/revokeObjectURL\n if (nativeRevokeObjectURL) defineBuiltIn(URLConstructor, 'revokeObjectURL', bind(nativeRevokeObjectURL, NativeURL));\n}\n\nsetToStringTag(URLConstructor, 'URL');\n\n$({ global: true, constructor: true, forced: !USE_NATIVE_URL, sham: !DESCRIPTORS }, {\n URL: URLConstructor\n});\n", "'use strict';\n// TODO: Remove this module from `core-js@4` since it's replaced to module below\nrequire('../modules/web.url.constructor');\n", "'use strict';\nvar $ = require('../internals/export');\nvar getBuiltIn = require('../internals/get-built-in');\nvar fails = require('../internals/fails');\nvar validateArgumentsLength = require('../internals/validate-arguments-length');\nvar toString = require('../internals/to-string');\nvar USE_NATIVE_URL = require('../internals/url-constructor-detection');\n\nvar URL = getBuiltIn('URL');\n\n// https://github.com/nodejs/node/issues/47505\n// https://github.com/denoland/deno/issues/18893\nvar THROWS_WITHOUT_ARGUMENTS = USE_NATIVE_URL && fails(function () {\n URL.canParse();\n});\n\n// Bun ~ 1.0.30 bug\n// https://github.com/oven-sh/bun/issues/9250\nvar WRONG_ARITY = fails(function () {\n return URL.canParse.length !== 1;\n});\n\n// `URL.canParse` method\n// https://url.spec.whatwg.org/#dom-url-canparse\n$({ target: 'URL', stat: true, forced: !THROWS_WITHOUT_ARGUMENTS || WRONG_ARITY }, {\n canParse: function canParse(url) {\n var length = validateArgumentsLength(arguments.length, 1);\n var urlString = toString(url);\n var base = length < 2 || arguments[1] === undefined ? undefined : toString(arguments[1]);\n try {\n return !!new URL(urlString, base);\n } catch (error) {\n return false;\n }\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar getBuiltIn = require('../internals/get-built-in');\nvar validateArgumentsLength = require('../internals/validate-arguments-length');\nvar toString = require('../internals/to-string');\nvar USE_NATIVE_URL = require('../internals/url-constructor-detection');\n\nvar URL = getBuiltIn('URL');\n\n// `URL.parse` method\n// https://url.spec.whatwg.org/#dom-url-parse\n$({ target: 'URL', stat: true, forced: !USE_NATIVE_URL }, {\n parse: function parse(url) {\n var length = validateArgumentsLength(arguments.length, 1);\n var urlString = toString(url);\n var base = length < 2 || arguments[1] === undefined ? undefined : toString(arguments[1]);\n try {\n return new URL(urlString, base);\n } catch (error) {\n return null;\n }\n }\n});\n", "'use strict';\nvar $ = require('../internals/export');\nvar call = require('../internals/function-call');\n\n// `URL.prototype.toJSON` method\n// https://url.spec.whatwg.org/#dom-url-tojson\n$({ target: 'URL', proto: true, enumerable: true }, {\n toJSON: function toJSON() {\n return call(URL.prototype.toString, this);\n }\n});\n", "'use strict';\n// TODO: Remove this module from `core-js@4` since it's replaced to module below\nrequire('../modules/web.url-search-params.constructor');\n", "'use strict';\nvar defineBuiltIn = require('../internals/define-built-in');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar toString = require('../internals/to-string');\nvar validateArgumentsLength = require('../internals/validate-arguments-length');\n\nvar $URLSearchParams = URLSearchParams;\nvar URLSearchParamsPrototype = $URLSearchParams.prototype;\nvar append = uncurryThis(URLSearchParamsPrototype.append);\nvar $delete = uncurryThis(URLSearchParamsPrototype['delete']);\nvar forEach = uncurryThis(URLSearchParamsPrototype.forEach);\nvar push = uncurryThis([].push);\nvar params = new $URLSearchParams('a=1&a=2&b=3');\n\nparams['delete']('a', 1);\n// `undefined` case is a Chromium 117 bug\n// https://bugs.chromium.org/p/v8/issues/detail?id=14222\nparams['delete']('b', undefined);\n\nif (params + '' !== 'a=2') {\n defineBuiltIn(URLSearchParamsPrototype, 'delete', function (name /* , value */) {\n var length = arguments.length;\n var $value = length < 2 ? undefined : arguments[1];\n if (length && $value === undefined) return $delete(this, name);\n var entries = [];\n forEach(this, function (v, k) { // also validates `this`\n push(entries, { key: k, value: v });\n });\n validateArgumentsLength(length, 1);\n var key = toString(name);\n var value = toString($value);\n var index = 0;\n var entriesLength = entries.length;\n var entry;\n while (index < entriesLength) {\n entry = entries[index];\n $delete(this, entry.key);\n index++;\n }\n index = 0;\n while (index < entriesLength) {\n entry = entries[index++];\n if (!(entry.key === key && entry.value === value)) append(this, entry.key, entry.value);\n }\n }, { enumerable: true, unsafe: true });\n}\n", "'use strict';\nvar defineBuiltIn = require('../internals/define-built-in');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar toString = require('../internals/to-string');\nvar validateArgumentsLength = require('../internals/validate-arguments-length');\n\nvar $URLSearchParams = URLSearchParams;\nvar URLSearchParamsPrototype = $URLSearchParams.prototype;\nvar getAll = uncurryThis(URLSearchParamsPrototype.getAll);\nvar $has = uncurryThis(URLSearchParamsPrototype.has);\nvar params = new $URLSearchParams('a=1');\n\n// `undefined` case is a Chromium 117 bug\n// https://bugs.chromium.org/p/v8/issues/detail?id=14222\nif (params.has('a', 2) || !params.has('a', undefined)) {\n defineBuiltIn(URLSearchParamsPrototype, 'has', function has(name /* , value */) {\n var length = arguments.length;\n var $value = length < 2 ? undefined : arguments[1];\n if (length && $value === undefined) return $has(this, name);\n var values = getAll(this, name); // also validates `this`\n validateArgumentsLength(length, 1);\n var value = toString($value);\n var index = 0;\n while (index < values.length) {\n if (values[index++] === value) return true;\n } return false;\n }, { enumerable: true, unsafe: true });\n}\n", "'use strict';\nvar DESCRIPTORS = require('../internals/descriptors');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar defineBuiltInAccessor = require('../internals/define-built-in-accessor');\n\nvar URLSearchParamsPrototype = URLSearchParams.prototype;\nvar forEach = uncurryThis(URLSearchParamsPrototype.forEach);\n\n// `URLSearchParams.prototype.size` getter\n// https://github.com/whatwg/url/pull/734\nif (DESCRIPTORS && !('size' in URLSearchParamsPrototype)) {\n defineBuiltInAccessor(URLSearchParamsPrototype, 'size', {\n get: function size() {\n var count = 0;\n forEach(this, function () { count++; });\n return count;\n },\n configurable: true,\n enumerable: true\n });\n}\n", "'use strict';\nrequire('../modules/es.symbol');\nrequire('../modules/es.symbol.description');\nrequire('../modules/es.symbol.async-dispose');\nrequire('../modules/es.symbol.async-iterator');\nrequire('../modules/es.symbol.dispose');\nrequire('../modules/es.symbol.has-instance');\nrequire('../modules/es.symbol.is-concat-spreadable');\nrequire('../modules/es.symbol.iterator');\nrequire('../modules/es.symbol.match');\nrequire('../modules/es.symbol.match-all');\nrequire('../modules/es.symbol.replace');\nrequire('../modules/es.symbol.search');\nrequire('../modules/es.symbol.species');\nrequire('../modules/es.symbol.split');\nrequire('../modules/es.symbol.to-primitive');\nrequire('../modules/es.symbol.to-string-tag');\nrequire('../modules/es.symbol.unscopables');\nrequire('../modules/es.error.cause');\nrequire('../modules/es.error.is-error');\nrequire('../modules/es.error.to-string');\nrequire('../modules/es.aggregate-error');\nrequire('../modules/es.aggregate-error.cause');\nrequire('../modules/es.suppressed-error.constructor');\nrequire('../modules/es.array.at');\nrequire('../modules/es.array.concat');\nrequire('../modules/es.array.copy-within');\nrequire('../modules/es.array.every');\nrequire('../modules/es.array.fill');\nrequire('../modules/es.array.filter');\nrequire('../modules/es.array.find');\nrequire('../modules/es.array.find-index');\nrequire('../modules/es.array.find-last');\nrequire('../modules/es.array.find-last-index');\nrequire('../modules/es.array.flat');\nrequire('../modules/es.array.flat-map');\nrequire('../modules/es.array.for-each');\nrequire('../modules/es.array.from');\nrequire('../modules/es.array.includes');\nrequire('../modules/es.array.index-of');\nrequire('../modules/es.array.is-array');\nrequire('../modules/es.array.iterator');\nrequire('../modules/es.array.join');\nrequire('../modules/es.array.last-index-of');\nrequire('../modules/es.array.map');\nrequire('../modules/es.array.of');\nrequire('../modules/es.array.push');\nrequire('../modules/es.array.reduce');\nrequire('../modules/es.array.reduce-right');\nrequire('../modules/es.array.reverse');\nrequire('../modules/es.array.slice');\nrequire('../modules/es.array.some');\nrequire('../modules/es.array.sort');\nrequire('../modules/es.array.species');\nrequire('../modules/es.array.splice');\nrequire('../modules/es.array.to-reversed');\nrequire('../modules/es.array.to-sorted');\nrequire('../modules/es.array.to-spliced');\nrequire('../modules/es.array.unscopables.flat');\nrequire('../modules/es.array.unscopables.flat-map');\nrequire('../modules/es.array.unshift');\nrequire('../modules/es.array.with');\nrequire('../modules/es.array-buffer.constructor');\nrequire('../modules/es.array-buffer.is-view');\nrequire('../modules/es.array-buffer.slice');\nrequire('../modules/es.data-view');\nrequire('../modules/es.data-view.get-float16');\nrequire('../modules/es.data-view.set-float16');\nrequire('../modules/es.array-buffer.detached');\nrequire('../modules/es.array-buffer.transfer');\nrequire('../modules/es.array-buffer.transfer-to-fixed-length');\nrequire('../modules/es.date.get-year');\nrequire('../modules/es.date.now');\nrequire('../modules/es.date.set-year');\nrequire('../modules/es.date.to-gmt-string');\nrequire('../modules/es.date.to-iso-string');\nrequire('../modules/es.date.to-json');\nrequire('../modules/es.date.to-primitive');\nrequire('../modules/es.date.to-string');\nrequire('../modules/es.disposable-stack.constructor');\nrequire('../modules/es.escape');\nrequire('../modules/es.function.bind');\nrequire('../modules/es.function.has-instance');\nrequire('../modules/es.function.name');\nrequire('../modules/es.global-this');\nrequire('../modules/es.iterator.constructor');\nrequire('../modules/es.iterator.concat');\nrequire('../modules/es.iterator.dispose');\nrequire('../modules/es.iterator.drop');\nrequire('../modules/es.iterator.every');\nrequire('../modules/es.iterator.filter');\nrequire('../modules/es.iterator.find');\nrequire('../modules/es.iterator.flat-map');\nrequire('../modules/es.iterator.for-each');\nrequire('../modules/es.iterator.from');\nrequire('../modules/es.iterator.map');\nrequire('../modules/es.iterator.reduce');\nrequire('../modules/es.iterator.some');\nrequire('../modules/es.iterator.take');\nrequire('../modules/es.iterator.to-array');\nrequire('../modules/es.json.is-raw-json');\nrequire('../modules/es.json.parse');\nrequire('../modules/es.json.raw-json');\nrequire('../modules/es.json.stringify');\nrequire('../modules/es.json.to-string-tag');\nrequire('../modules/es.map');\nrequire('../modules/es.map.group-by');\nrequire('../modules/es.map.get-or-insert');\nrequire('../modules/es.map.get-or-insert-computed');\nrequire('../modules/es.math.acosh');\nrequire('../modules/es.math.asinh');\nrequire('../modules/es.math.atanh');\nrequire('../modules/es.math.cbrt');\nrequire('../modules/es.math.clz32');\nrequire('../modules/es.math.cosh');\nrequire('../modules/es.math.expm1');\nrequire('../modules/es.math.fround');\nrequire('../modules/es.math.f16round');\nrequire('../modules/es.math.hypot');\nrequire('../modules/es.math.imul');\nrequire('../modules/es.math.log10');\nrequire('../modules/es.math.log1p');\nrequire('../modules/es.math.log2');\nrequire('../modules/es.math.sign');\nrequire('../modules/es.math.sinh');\nrequire('../modules/es.math.sum-precise');\nrequire('../modules/es.math.tanh');\nrequire('../modules/es.math.to-string-tag');\nrequire('../modules/es.math.trunc');\nrequire('../modules/es.number.constructor');\nrequire('../modules/es.number.epsilon');\nrequire('../modules/es.number.is-finite');\nrequire('../modules/es.number.is-integer');\nrequire('../modules/es.number.is-nan');\nrequire('../modules/es.number.is-safe-integer');\nrequire('../modules/es.number.max-safe-integer');\nrequire('../modules/es.number.min-safe-integer');\nrequire('../modules/es.number.parse-float');\nrequire('../modules/es.number.parse-int');\nrequire('../modules/es.number.to-exponential');\nrequire('../modules/es.number.to-fixed');\nrequire('../modules/es.number.to-precision');\nrequire('../modules/es.object.assign');\nrequire('../modules/es.object.create');\nrequire('../modules/es.object.define-getter');\nrequire('../modules/es.object.define-properties');\nrequire('../modules/es.object.define-property');\nrequire('../modules/es.object.define-setter');\nrequire('../modules/es.object.entries');\nrequire('../modules/es.object.freeze');\nrequire('../modules/es.object.from-entries');\nrequire('../modules/es.object.get-own-property-descriptor');\nrequire('../modules/es.object.get-own-property-descriptors');\nrequire('../modules/es.object.get-own-property-names');\nrequire('../modules/es.object.get-prototype-of');\nrequire('../modules/es.object.group-by');\nrequire('../modules/es.object.has-own');\nrequire('../modules/es.object.is');\nrequire('../modules/es.object.is-extensible');\nrequire('../modules/es.object.is-frozen');\nrequire('../modules/es.object.is-sealed');\nrequire('../modules/es.object.keys');\nrequire('../modules/es.object.lookup-getter');\nrequire('../modules/es.object.lookup-setter');\nrequire('../modules/es.object.prevent-extensions');\nrequire('../modules/es.object.proto');\nrequire('../modules/es.object.seal');\nrequire('../modules/es.object.set-prototype-of');\nrequire('../modules/es.object.to-string');\nrequire('../modules/es.object.values');\nrequire('../modules/es.parse-float');\nrequire('../modules/es.parse-int');\nrequire('../modules/es.promise');\nrequire('../modules/es.promise.all-settled');\nrequire('../modules/es.promise.any');\nrequire('../modules/es.promise.finally');\nrequire('../modules/es.promise.try');\nrequire('../modules/es.promise.with-resolvers');\nrequire('../modules/es.array.from-async');\nrequire('../modules/es.async-disposable-stack.constructor');\nrequire('../modules/es.async-iterator.async-dispose');\nrequire('../modules/es.reflect.apply');\nrequire('../modules/es.reflect.construct');\nrequire('../modules/es.reflect.define-property');\nrequire('../modules/es.reflect.delete-property');\nrequire('../modules/es.reflect.get');\nrequire('../modules/es.reflect.get-own-property-descriptor');\nrequire('../modules/es.reflect.get-prototype-of');\nrequire('../modules/es.reflect.has');\nrequire('../modules/es.reflect.is-extensible');\nrequire('../modules/es.reflect.own-keys');\nrequire('../modules/es.reflect.prevent-extensions');\nrequire('../modules/es.reflect.set');\nrequire('../modules/es.reflect.set-prototype-of');\nrequire('../modules/es.reflect.to-string-tag');\nrequire('../modules/es.regexp.constructor');\nrequire('../modules/es.regexp.escape');\nrequire('../modules/es.regexp.dot-all');\nrequire('../modules/es.regexp.exec');\nrequire('../modules/es.regexp.flags');\nrequire('../modules/es.regexp.sticky');\nrequire('../modules/es.regexp.test');\nrequire('../modules/es.regexp.to-string');\nrequire('../modules/es.set');\nrequire('../modules/es.set.difference.v2');\nrequire('../modules/es.set.intersection.v2');\nrequire('../modules/es.set.is-disjoint-from.v2');\nrequire('../modules/es.set.is-subset-of.v2');\nrequire('../modules/es.set.is-superset-of.v2');\nrequire('../modules/es.set.symmetric-difference.v2');\nrequire('../modules/es.set.union.v2');\nrequire('../modules/es.string.at-alternative');\nrequire('../modules/es.string.code-point-at');\nrequire('../modules/es.string.ends-with');\nrequire('../modules/es.string.from-code-point');\nrequire('../modules/es.string.includes');\nrequire('../modules/es.string.is-well-formed');\nrequire('../modules/es.string.iterator');\nrequire('../modules/es.string.match');\nrequire('../modules/es.string.match-all');\nrequire('../modules/es.string.pad-end');\nrequire('../modules/es.string.pad-start');\nrequire('../modules/es.string.raw');\nrequire('../modules/es.string.repeat');\nrequire('../modules/es.string.replace');\nrequire('../modules/es.string.replace-all');\nrequire('../modules/es.string.search');\nrequire('../modules/es.string.split');\nrequire('../modules/es.string.starts-with');\nrequire('../modules/es.string.substr');\nrequire('../modules/es.string.to-well-formed');\nrequire('../modules/es.string.trim');\nrequire('../modules/es.string.trim-end');\nrequire('../modules/es.string.trim-start');\nrequire('../modules/es.string.anchor');\nrequire('../modules/es.string.big');\nrequire('../modules/es.string.blink');\nrequire('../modules/es.string.bold');\nrequire('../modules/es.string.fixed');\nrequire('../modules/es.string.fontcolor');\nrequire('../modules/es.string.fontsize');\nrequire('../modules/es.string.italics');\nrequire('../modules/es.string.link');\nrequire('../modules/es.string.small');\nrequire('../modules/es.string.strike');\nrequire('../modules/es.string.sub');\nrequire('../modules/es.string.sup');\nrequire('../modules/es.typed-array.float32-array');\nrequire('../modules/es.typed-array.float64-array');\nrequire('../modules/es.typed-array.int8-array');\nrequire('../modules/es.typed-array.int16-array');\nrequire('../modules/es.typed-array.int32-array');\nrequire('../modules/es.typed-array.uint8-array');\nrequire('../modules/es.typed-array.uint8-clamped-array');\nrequire('../modules/es.typed-array.uint16-array');\nrequire('../modules/es.typed-array.uint32-array');\nrequire('../modules/es.typed-array.at');\nrequire('../modules/es.typed-array.copy-within');\nrequire('../modules/es.typed-array.every');\nrequire('../modules/es.typed-array.fill');\nrequire('../modules/es.typed-array.filter');\nrequire('../modules/es.typed-array.find');\nrequire('../modules/es.typed-array.find-index');\nrequire('../modules/es.typed-array.find-last');\nrequire('../modules/es.typed-array.find-last-index');\nrequire('../modules/es.typed-array.for-each');\nrequire('../modules/es.typed-array.from');\nrequire('../modules/es.typed-array.includes');\nrequire('../modules/es.typed-array.index-of');\nrequire('../modules/es.typed-array.iterator');\nrequire('../modules/es.typed-array.join');\nrequire('../modules/es.typed-array.last-index-of');\nrequire('../modules/es.typed-array.map');\nrequire('../modules/es.typed-array.of');\nrequire('../modules/es.typed-array.reduce');\nrequire('../modules/es.typed-array.reduce-right');\nrequire('../modules/es.typed-array.reverse');\nrequire('../modules/es.typed-array.set');\nrequire('../modules/es.typed-array.slice');\nrequire('../modules/es.typed-array.some');\nrequire('../modules/es.typed-array.sort');\nrequire('../modules/es.typed-array.subarray');\nrequire('../modules/es.typed-array.to-locale-string');\nrequire('../modules/es.typed-array.to-reversed');\nrequire('../modules/es.typed-array.to-sorted');\nrequire('../modules/es.typed-array.to-string');\nrequire('../modules/es.typed-array.with');\nrequire('../modules/es.uint8-array.from-base64');\nrequire('../modules/es.uint8-array.from-hex');\nrequire('../modules/es.uint8-array.set-from-base64');\nrequire('../modules/es.uint8-array.set-from-hex');\nrequire('../modules/es.uint8-array.to-base64');\nrequire('../modules/es.uint8-array.to-hex');\nrequire('../modules/es.unescape');\nrequire('../modules/es.weak-map');\nrequire('../modules/es.weak-map.get-or-insert');\nrequire('../modules/es.weak-map.get-or-insert-computed');\nrequire('../modules/es.weak-set');\nrequire('../modules/web.atob');\nrequire('../modules/web.btoa');\nrequire('../modules/web.dom-collections.for-each');\nrequire('../modules/web.dom-collections.iterator');\nrequire('../modules/web.dom-exception.constructor');\nrequire('../modules/web.dom-exception.stack');\nrequire('../modules/web.dom-exception.to-string-tag');\nrequire('../modules/web.immediate');\nrequire('../modules/web.queue-microtask');\nrequire('../modules/web.self');\nrequire('../modules/web.structured-clone');\nrequire('../modules/web.timers');\nrequire('../modules/web.url');\nrequire('../modules/web.url.can-parse');\nrequire('../modules/web.url.parse');\nrequire('../modules/web.url.to-json');\nrequire('../modules/web.url-search-params');\nrequire('../modules/web.url-search-params.delete');\nrequire('../modules/web.url-search-params.has');\nrequire('../modules/web.url-search-params.size');\n\nmodule.exports = require('../internals/path');\n", "/*!\n * Chartkick.js\n * Create beautiful charts with one line of JavaScript\n * https://github.com/ankane/chartkick.js\n * v4.2.0\n * MIT License\n */\n\n(function (global, factory) {\n typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :\n typeof define === 'function' && define.amd ? define(factory) :\n (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.Chartkick = factory());\n})(this, (function () { 'use strict';\n\n function isArray(variable) {\n return Object.prototype.toString.call(variable) === \"[object Array]\";\n }\n\n function isFunction(variable) {\n return variable instanceof Function;\n }\n\n function isPlainObject(variable) {\n // protect against prototype pollution, defense 2\n return Object.prototype.toString.call(variable) === \"[object Object]\" && !isFunction(variable) && variable instanceof Object;\n }\n\n // https://github.com/madrobby/zepto/blob/master/src/zepto.js\n function extend(target, source) {\n var key;\n for (key in source) {\n // protect against prototype pollution, defense 1\n if (key === \"__proto__\") { continue; }\n\n if (isPlainObject(source[key]) || isArray(source[key])) {\n if (isPlainObject(source[key]) && !isPlainObject(target[key])) {\n target[key] = {};\n }\n if (isArray(source[key]) && !isArray(target[key])) {\n target[key] = [];\n }\n extend(target[key], source[key]);\n } else if (source[key] !== undefined) {\n target[key] = source[key];\n }\n }\n }\n\n function merge(obj1, obj2) {\n var target = {};\n extend(target, obj1);\n extend(target, obj2);\n return target;\n }\n\n var DATE_PATTERN = /^(\\d\\d\\d\\d)(-)?(\\d\\d)(-)?(\\d\\d)$/i;\n\n function negativeValues(series) {\n var i, j, data;\n for (i = 0; i < series.length; i++) {\n data = series[i].data;\n for (j = 0; j < data.length; j++) {\n if (data[j][1] < 0) {\n return true;\n }\n }\n }\n return false;\n }\n\n function toStr(n) {\n return \"\" + n;\n }\n\n function toFloat(n) {\n return parseFloat(n);\n }\n\n function toDate(n) {\n var matches, year, month, day;\n if (typeof n !== \"object\") {\n if (typeof n === \"number\") {\n n = new Date(n * 1000); // ms\n } else {\n n = toStr(n);\n if ((matches = n.match(DATE_PATTERN))) {\n year = parseInt(matches[1], 10);\n month = parseInt(matches[3], 10) - 1;\n day = parseInt(matches[5], 10);\n return new Date(year, month, day);\n } else {\n // try our best to get the str into iso8601\n // TODO be smarter about this\n var str = n.replace(/ /, \"T\").replace(\" \", \"\").replace(\"UTC\", \"Z\");\n // Date.parse returns milliseconds if valid and NaN if invalid\n n = new Date(Date.parse(str) || n);\n }\n }\n }\n return n;\n }\n\n function toArr(n) {\n if (!isArray(n)) {\n var arr = [], i;\n for (i in n) {\n if (n.hasOwnProperty(i)) {\n arr.push([i, n[i]]);\n }\n }\n n = arr;\n }\n return n;\n }\n\n function jsOptionsFunc(defaultOptions, hideLegend, setTitle, setMin, setMax, setStacked, setXtitle, setYtitle) {\n return function (chart, opts, chartOptions) {\n var series = chart.data;\n var options = merge({}, defaultOptions);\n options = merge(options, chartOptions || {});\n\n if (chart.singleSeriesFormat || \"legend\" in opts) {\n hideLegend(options, opts.legend, chart.singleSeriesFormat);\n }\n\n if (opts.title) {\n setTitle(options, opts.title);\n }\n\n // min\n if (\"min\" in opts) {\n setMin(options, opts.min);\n } else if (!negativeValues(series)) {\n setMin(options, 0);\n }\n\n // max\n if (opts.max) {\n setMax(options, opts.max);\n }\n\n if (\"stacked\" in opts) {\n setStacked(options, opts.stacked);\n }\n\n if (opts.colors) {\n options.colors = opts.colors;\n }\n\n if (opts.xtitle) {\n setXtitle(options, opts.xtitle);\n }\n\n if (opts.ytitle) {\n setYtitle(options, opts.ytitle);\n }\n\n // merge library last\n options = merge(options, opts.library || {});\n\n return options;\n };\n }\n\n function sortByTime(a, b) {\n return a[0].getTime() - b[0].getTime();\n }\n\n function sortByNumberSeries(a, b) {\n return a[0] - b[0];\n }\n\n function sortByNumber(a, b) {\n return a - b;\n }\n\n function isMinute(d) {\n return d.getMilliseconds() === 0 && d.getSeconds() === 0;\n }\n\n function isHour(d) {\n return isMinute(d) && d.getMinutes() === 0;\n }\n\n function isDay(d) {\n return isHour(d) && d.getHours() === 0;\n }\n\n function isWeek(d, dayOfWeek) {\n return isDay(d) && d.getDay() === dayOfWeek;\n }\n\n function isMonth(d) {\n return isDay(d) && d.getDate() === 1;\n }\n\n function isYear(d) {\n return isMonth(d) && d.getMonth() === 0;\n }\n\n function isDate(obj) {\n return !isNaN(toDate(obj)) && toStr(obj).length >= 6;\n }\n\n function isNumber(obj) {\n return typeof obj === \"number\";\n }\n\n var byteSuffixes = [\"bytes\", \"KB\", \"MB\", \"GB\", \"TB\", \"PB\", \"EB\"];\n\n function formatValue(pre, value, options, axis) {\n pre = pre || \"\";\n if (options.prefix) {\n if (value < 0) {\n value = value * -1;\n pre += \"-\";\n }\n pre += options.prefix;\n }\n\n var suffix = options.suffix || \"\";\n var precision = options.precision;\n var round = options.round;\n\n if (options.byteScale) {\n var suffixIdx;\n var baseValue = axis ? options.byteScale : value;\n\n if (baseValue >= 1152921504606846976) {\n value /= 1152921504606846976;\n suffixIdx = 6;\n } else if (baseValue >= 1125899906842624) {\n value /= 1125899906842624;\n suffixIdx = 5;\n } else if (baseValue >= 1099511627776) {\n value /= 1099511627776;\n suffixIdx = 4;\n } else if (baseValue >= 1073741824) {\n value /= 1073741824;\n suffixIdx = 3;\n } else if (baseValue >= 1048576) {\n value /= 1048576;\n suffixIdx = 2;\n } else if (baseValue >= 1024) {\n value /= 1024;\n suffixIdx = 1;\n } else {\n suffixIdx = 0;\n }\n\n // TODO handle manual precision case\n if (precision === undefined && round === undefined) {\n if (value >= 1023.5) {\n if (suffixIdx < byteSuffixes.length - 1) {\n value = 1.0;\n suffixIdx += 1;\n }\n }\n precision = value >= 1000 ? 4 : 3;\n }\n suffix = \" \" + byteSuffixes[suffixIdx];\n }\n\n if (precision !== undefined && round !== undefined) {\n throw Error(\"Use either round or precision, not both\");\n }\n\n if (!axis) {\n if (precision !== undefined) {\n value = value.toPrecision(precision);\n if (!options.zeros) {\n value = parseFloat(value);\n }\n }\n\n if (round !== undefined) {\n if (round < 0) {\n var num = Math.pow(10, -1 * round);\n value = parseInt((1.0 * value / num).toFixed(0)) * num;\n } else {\n value = value.toFixed(round);\n if (!options.zeros) {\n value = parseFloat(value);\n }\n }\n }\n }\n\n if (options.thousands || options.decimal) {\n value = toStr(value);\n var parts = value.split(\".\");\n value = parts[0];\n if (options.thousands) {\n value = value.replace(/\\B(?=(\\d{3})+(?!\\d))/g, options.thousands);\n }\n if (parts.length > 1) {\n value += (options.decimal || \".\") + parts[1];\n }\n }\n\n return pre + value + suffix;\n }\n\n function seriesOption(chart, series, option) {\n if (option in series) {\n return series[option];\n } else if (option in chart.options) {\n return chart.options[option];\n }\n return null;\n }\n\n function allZeros(data) {\n var i, j, d;\n for (i = 0; i < data.length; i++) {\n d = data[i].data;\n for (j = 0; j < d.length; j++) {\n if (d[j][1] != 0) {\n return false;\n }\n }\n }\n return true;\n }\n\n var baseOptions = {\n maintainAspectRatio: false,\n animation: false,\n plugins: {\n legend: {},\n tooltip: {\n displayColors: false,\n callbacks: {}\n },\n title: {\n font: {\n size: 20\n },\n color: \"#333\"\n }\n },\n interaction: {}\n };\n\n var defaultOptions$2 = {\n scales: {\n y: {\n ticks: {\n maxTicksLimit: 4\n },\n title: {\n font: {\n size: 16\n },\n color: \"#333\"\n },\n grid: {}\n },\n x: {\n grid: {\n drawOnChartArea: false\n },\n title: {\n font: {\n size: 16\n },\n color: \"#333\"\n },\n time: {},\n ticks: {}\n }\n }\n };\n\n // http://there4.io/2012/05/02/google-chart-color-list/\n var defaultColors = [\n \"#3366CC\", \"#DC3912\", \"#FF9900\", \"#109618\", \"#990099\", \"#3B3EAC\", \"#0099C6\",\n \"#DD4477\", \"#66AA00\", \"#B82E2E\", \"#316395\", \"#994499\", \"#22AA99\", \"#AAAA11\",\n \"#6633CC\", \"#E67300\", \"#8B0707\", \"#329262\", \"#5574A6\", \"#651067\"\n ];\n\n var hideLegend$2 = function (options, legend, hideLegend) {\n if (legend !== undefined) {\n options.plugins.legend.display = !!legend;\n if (legend && legend !== true) {\n options.plugins.legend.position = legend;\n }\n } else if (hideLegend) {\n options.plugins.legend.display = false;\n }\n };\n\n var setTitle$2 = function (options, title) {\n options.plugins.title.display = true;\n options.plugins.title.text = title;\n };\n\n var setMin$2 = function (options, min) {\n if (min !== null) {\n options.scales.y.min = toFloat(min);\n }\n };\n\n var setMax$2 = function (options, max) {\n options.scales.y.max = toFloat(max);\n };\n\n var setBarMin$1 = function (options, min) {\n if (min !== null) {\n options.scales.x.min = toFloat(min);\n }\n };\n\n var setBarMax$1 = function (options, max) {\n options.scales.x.max = toFloat(max);\n };\n\n var setStacked$2 = function (options, stacked) {\n options.scales.x.stacked = !!stacked;\n options.scales.y.stacked = !!stacked;\n };\n\n var setXtitle$2 = function (options, title) {\n options.scales.x.title.display = true;\n options.scales.x.title.text = title;\n };\n\n var setYtitle$2 = function (options, title) {\n options.scales.y.title.display = true;\n options.scales.y.title.text = title;\n };\n\n // https://stackoverflow.com/questions/5623838/rgb-to-hex-and-hex-to-rgb\n var addOpacity = function (hex, opacity) {\n var result = /^#?([a-f\\d]{2})([a-f\\d]{2})([a-f\\d]{2})$/i.exec(hex);\n return result ? \"rgba(\" + parseInt(result[1], 16) + \", \" + parseInt(result[2], 16) + \", \" + parseInt(result[3], 16) + \", \" + opacity + \")\" : hex;\n };\n\n // check if not null or undefined\n // https://stackoverflow.com/a/27757708/1177228\n var notnull = function (x) {\n return x != null;\n };\n\n var setLabelSize = function (chart, data, options) {\n var maxLabelSize = Math.ceil(chart.element.offsetWidth / 4.0 / data.labels.length);\n if (maxLabelSize > 25) {\n maxLabelSize = 25;\n } else if (maxLabelSize < 10) {\n maxLabelSize = 10;\n }\n if (!options.scales.x.ticks.callback) {\n options.scales.x.ticks.callback = function (value) {\n value = toStr(this.getLabelForValue(value));\n if (value.length > maxLabelSize) {\n return value.substring(0, maxLabelSize - 2) + \"...\";\n } else {\n return value;\n }\n };\n }\n };\n\n var setFormatOptions$1 = function (chart, options, chartType) {\n var formatOptions = {\n prefix: chart.options.prefix,\n suffix: chart.options.suffix,\n thousands: chart.options.thousands,\n decimal: chart.options.decimal,\n precision: chart.options.precision,\n round: chart.options.round,\n zeros: chart.options.zeros\n };\n\n if (chart.options.bytes) {\n var series = chart.data;\n if (chartType === \"pie\") {\n series = [{data: series}];\n }\n\n // calculate max\n var max = 0;\n for (var i = 0; i < series.length; i++) {\n var s = series[i];\n for (var j = 0; j < s.data.length; j++) {\n if (s.data[j][1] > max) {\n max = s.data[j][1];\n }\n }\n }\n\n // calculate scale\n var scale = 1;\n while (max >= 1024) {\n scale *= 1024;\n max /= 1024;\n }\n\n // set step size\n formatOptions.byteScale = scale;\n }\n\n if (chartType !== \"pie\") {\n var axis = options.scales.y;\n if (chartType === \"bar\") {\n axis = options.scales.x;\n }\n\n if (formatOptions.byteScale) {\n if (!axis.ticks.stepSize) {\n axis.ticks.stepSize = formatOptions.byteScale / 2;\n }\n if (!axis.ticks.maxTicksLimit) {\n axis.ticks.maxTicksLimit = 4;\n }\n }\n\n if (!axis.ticks.callback) {\n axis.ticks.callback = function (value) {\n return formatValue(\"\", value, formatOptions, true);\n };\n }\n }\n\n if (!options.plugins.tooltip.callbacks.label) {\n if (chartType === \"scatter\") {\n options.plugins.tooltip.callbacks.label = function (context) {\n var label = context.dataset.label || '';\n if (label) {\n label += ': ';\n }\n return label + '(' + context.label + ', ' + context.formattedValue + ')';\n };\n } else if (chartType === \"bubble\") {\n options.plugins.tooltip.callbacks.label = function (context) {\n var label = context.dataset.label || '';\n if (label) {\n label += ': ';\n }\n var dataPoint = context.raw;\n return label + '(' + dataPoint.x + ', ' + dataPoint.y + ', ' + dataPoint.v + ')';\n };\n } else if (chartType === \"pie\") {\n // need to use separate label for pie charts\n options.plugins.tooltip.callbacks.label = function (context) {\n var dataLabel = context.label;\n var value = ': ';\n\n if (isArray(dataLabel)) {\n // show value on first line of multiline label\n // need to clone because we are changing the value\n dataLabel = dataLabel.slice();\n dataLabel[0] += value;\n } else {\n dataLabel += value;\n }\n\n return formatValue(dataLabel, context.parsed, formatOptions);\n };\n } else {\n var valueLabel = chartType === \"bar\" ? \"x\" : \"y\";\n options.plugins.tooltip.callbacks.label = function (context) {\n // don't show null values for stacked charts\n if (context.parsed[valueLabel] === null) {\n return;\n }\n\n var label = context.dataset.label || '';\n if (label) {\n label += ': ';\n }\n return formatValue(label, context.parsed[valueLabel], formatOptions);\n };\n }\n }\n };\n\n var jsOptions$2 = jsOptionsFunc(merge(baseOptions, defaultOptions$2), hideLegend$2, setTitle$2, setMin$2, setMax$2, setStacked$2, setXtitle$2, setYtitle$2);\n\n var createDataTable = function (chart, options, chartType) {\n var datasets = [];\n var labels = [];\n\n var colors = chart.options.colors || defaultColors;\n\n var day = true;\n var week = true;\n var dayOfWeek;\n var month = true;\n var year = true;\n var hour = true;\n var minute = true;\n\n var series = chart.data;\n\n var max = 0;\n if (chartType === \"bubble\") {\n for (var i$1 = 0; i$1 < series.length; i$1++) {\n var s$1 = series[i$1];\n for (var j$1 = 0; j$1 < s$1.data.length; j$1++) {\n if (s$1.data[j$1][2] > max) {\n max = s$1.data[j$1][2];\n }\n }\n }\n }\n\n var i, j, s, d, key, rows = [], rows2 = [];\n\n if (chartType === \"bar\" || chartType === \"column\" || (chart.xtype !== \"number\" && chart.xtype !== \"bubble\")) {\n var sortedLabels = [];\n\n for (i = 0; i < series.length; i++) {\n s = series[i];\n\n for (j = 0; j < s.data.length; j++) {\n d = s.data[j];\n key = chart.xtype == \"datetime\" ? d[0].getTime() : d[0];\n if (!rows[key]) {\n rows[key] = new Array(series.length);\n }\n rows[key][i] = toFloat(d[1]);\n if (sortedLabels.indexOf(key) === -1) {\n sortedLabels.push(key);\n }\n }\n }\n\n if (chart.xtype === \"datetime\" || chart.xtype === \"number\") {\n sortedLabels.sort(sortByNumber);\n }\n\n for (j = 0; j < series.length; j++) {\n rows2.push([]);\n }\n\n var value;\n var k;\n for (k = 0; k < sortedLabels.length; k++) {\n i = sortedLabels[k];\n if (chart.xtype === \"datetime\") {\n value = new Date(toFloat(i));\n // TODO make this efficient\n day = day && isDay(value);\n if (!dayOfWeek) {\n dayOfWeek = value.getDay();\n }\n week = week && isWeek(value, dayOfWeek);\n month = month && isMonth(value);\n year = year && isYear(value);\n hour = hour && isHour(value);\n minute = minute && isMinute(value);\n } else {\n value = i;\n }\n labels.push(value);\n for (j = 0; j < series.length; j++) {\n // Chart.js doesn't like undefined\n rows2[j].push(rows[i][j] === undefined ? null : rows[i][j]);\n }\n }\n } else {\n for (var i$2 = 0; i$2 < series.length; i$2++) {\n var s$2 = series[i$2];\n var d$1 = [];\n for (var j$2 = 0; j$2 < s$2.data.length; j$2++) {\n var point = {\n x: toFloat(s$2.data[j$2][0]),\n y: toFloat(s$2.data[j$2][1])\n };\n if (chartType === \"bubble\") {\n point.r = toFloat(s$2.data[j$2][2]) * 20 / max;\n // custom attribute, for tooltip\n point.v = s$2.data[j$2][2];\n }\n d$1.push(point);\n }\n rows2.push(d$1);\n }\n }\n\n var color;\n var backgroundColor;\n\n for (i = 0; i < series.length; i++) {\n s = series[i];\n\n // use colors for each bar for single series format\n if (chart.options.colors && chart.singleSeriesFormat && (chartType === \"bar\" || chartType === \"column\") && !s.color && isArray(chart.options.colors) && !isArray(chart.options.colors[0])) {\n color = colors;\n backgroundColor = [];\n for (var j$3 = 0; j$3 < colors.length; j$3++) {\n backgroundColor[j$3] = addOpacity(color[j$3], 0.5);\n }\n } else {\n color = s.color || colors[i];\n backgroundColor = chartType !== \"line\" ? addOpacity(color, 0.5) : color;\n }\n\n var dataset = {\n label: s.name || \"\",\n data: rows2[i],\n fill: chartType === \"area\",\n borderColor: color,\n backgroundColor: backgroundColor,\n borderWidth: 2\n };\n\n var pointChart = chartType === \"line\" || chartType === \"area\" || chartType === \"scatter\" || chartType === \"bubble\";\n if (pointChart) {\n dataset.pointBackgroundColor = color;\n dataset.pointHoverBackgroundColor = color;\n dataset.pointHitRadius = 50;\n }\n\n if (chartType === \"bubble\") {\n dataset.pointBackgroundColor = backgroundColor;\n dataset.pointHoverBackgroundColor = backgroundColor;\n dataset.pointHoverBorderWidth = 2;\n }\n\n if (s.stack) {\n dataset.stack = s.stack;\n }\n\n var curve = seriesOption(chart, s, \"curve\");\n if (curve === false) {\n dataset.tension = 0;\n } else if (pointChart) {\n dataset.tension = 0.4;\n }\n\n var points = seriesOption(chart, s, \"points\");\n if (points === false) {\n dataset.pointRadius = 0;\n dataset.pointHoverRadius = 0;\n }\n\n dataset = merge(dataset, chart.options.dataset || {});\n dataset = merge(dataset, s.library || {});\n dataset = merge(dataset, s.dataset || {});\n\n datasets.push(dataset);\n }\n\n var xmin = chart.options.xmin;\n var xmax = chart.options.xmax;\n\n if (chart.xtype === \"datetime\") {\n if (notnull(xmin)) {\n options.scales.x.min = toDate(xmin).getTime();\n }\n if (notnull(xmax)) {\n options.scales.x.max = toDate(xmax).getTime();\n }\n } else if (chart.xtype === \"number\") {\n if (notnull(xmin)) {\n options.scales.x.min = xmin;\n }\n if (notnull(xmax)) {\n options.scales.x.max = xmax;\n }\n }\n\n // for empty datetime chart\n if (chart.xtype === \"datetime\" && labels.length === 0) {\n if (notnull(xmin)) {\n labels.push(toDate(xmin));\n }\n if (notnull(xmax)) {\n labels.push(toDate(xmax));\n }\n day = false;\n week = false;\n month = false;\n year = false;\n hour = false;\n minute = false;\n }\n\n if (chart.xtype === \"datetime\" && labels.length > 0) {\n var minTime = (notnull(xmin) ? toDate(xmin) : labels[0]).getTime();\n var maxTime = (notnull(xmax) ? toDate(xmax) : labels[0]).getTime();\n\n for (i = 1; i < labels.length; i++) {\n var value$1 = labels[i].getTime();\n if (value$1 < minTime) {\n minTime = value$1;\n }\n if (value$1 > maxTime) {\n maxTime = value$1;\n }\n }\n\n var timeDiff = (maxTime - minTime) / (86400 * 1000.0);\n\n if (!options.scales.x.time.unit) {\n var step;\n if (year || timeDiff > 365 * 10) {\n options.scales.x.time.unit = \"year\";\n step = 365;\n } else if (month || timeDiff > 30 * 10) {\n options.scales.x.time.unit = \"month\";\n step = 30;\n } else if (day || timeDiff > 10) {\n options.scales.x.time.unit = \"day\";\n step = 1;\n } else if (hour || timeDiff > 0.5) {\n options.scales.x.time.displayFormats = {hour: \"MMM d, h a\"};\n options.scales.x.time.unit = \"hour\";\n step = 1 / 24.0;\n } else if (minute) {\n options.scales.x.time.displayFormats = {minute: \"h:mm a\"};\n options.scales.x.time.unit = \"minute\";\n step = 1 / 24.0 / 60.0;\n }\n\n if (step && timeDiff > 0) {\n // width not available for hidden elements\n var width = chart.element.offsetWidth;\n if (width > 0) {\n var unitStepSize = Math.ceil(timeDiff / step / (width / 100.0));\n if (week && step === 1) {\n unitStepSize = Math.ceil(unitStepSize / 7.0) * 7;\n }\n options.scales.x.time.stepSize = unitStepSize;\n }\n }\n }\n\n if (!options.scales.x.time.tooltipFormat) {\n if (day) {\n options.scales.x.time.tooltipFormat = \"PP\";\n } else if (hour) {\n options.scales.x.time.tooltipFormat = \"MMM d, h a\";\n } else if (minute) {\n options.scales.x.time.tooltipFormat = \"h:mm a\";\n }\n }\n }\n\n var data = {\n labels: labels,\n datasets: datasets\n };\n\n return data;\n };\n\n var defaultExport$2 = function defaultExport(library) {\n this.name = \"chartjs\";\n this.library = library;\n };\n\n defaultExport$2.prototype.renderLineChart = function renderLineChart (chart, chartType) {\n var chartOptions = {};\n // fix for https://github.com/chartjs/Chart.js/issues/2441\n if (!chart.options.max && allZeros(chart.data)) {\n chartOptions.max = 1;\n }\n\n var options = jsOptions$2(chart, merge(chartOptions, chart.options));\n setFormatOptions$1(chart, options, chartType);\n\n var data = createDataTable(chart, options, chartType || \"line\");\n\n if (chart.xtype === \"number\") {\n options.scales.x.type = options.scales.x.type || \"linear\";\n options.scales.x.position = options.scales.x.position ||\"bottom\";\n } else {\n options.scales.x.type = chart.xtype === \"string\" ? \"category\" : \"time\";\n }\n\n this.drawChart(chart, \"line\", data, options);\n };\n\n defaultExport$2.prototype.renderPieChart = function renderPieChart (chart) {\n var options = merge({}, baseOptions);\n if (chart.options.donut) {\n options.cutout = \"50%\";\n }\n\n if (\"legend\" in chart.options) {\n hideLegend$2(options, chart.options.legend);\n }\n\n if (chart.options.title) {\n setTitle$2(options, chart.options.title);\n }\n\n options = merge(options, chart.options.library || {});\n setFormatOptions$1(chart, options, \"pie\");\n\n var labels = [];\n var values = [];\n for (var i = 0; i < chart.data.length; i++) {\n var point = chart.data[i];\n labels.push(point[0]);\n values.push(point[1]);\n }\n\n var dataset = {\n data: values,\n backgroundColor: chart.options.colors || defaultColors\n };\n dataset = merge(dataset, chart.options.dataset || {});\n\n var data = {\n labels: labels,\n datasets: [dataset]\n };\n\n this.drawChart(chart, \"pie\", data, options);\n };\n\n defaultExport$2.prototype.renderColumnChart = function renderColumnChart (chart, chartType) {\n var options;\n if (chartType === \"bar\") {\n var barOptions = merge(baseOptions, defaultOptions$2);\n barOptions.indexAxis = \"y\";\n\n // ensure gridlines have proper orientation\n barOptions.scales.x.grid.drawOnChartArea = true;\n barOptions.scales.y.grid.drawOnChartArea = false;\n delete barOptions.scales.y.ticks.maxTicksLimit;\n\n options = jsOptionsFunc(barOptions, hideLegend$2, setTitle$2, setBarMin$1, setBarMax$1, setStacked$2, setXtitle$2, setYtitle$2)(chart, chart.options);\n } else {\n options = jsOptions$2(chart, chart.options);\n }\n setFormatOptions$1(chart, options, chartType);\n var data = createDataTable(chart, options, \"column\");\n if (chartType !== \"bar\") {\n setLabelSize(chart, data, options);\n }\n this.drawChart(chart, \"bar\", data, options);\n };\n\n defaultExport$2.prototype.renderAreaChart = function renderAreaChart (chart) {\n this.renderLineChart(chart, \"area\");\n };\n\n defaultExport$2.prototype.renderBarChart = function renderBarChart (chart) {\n this.renderColumnChart(chart, \"bar\");\n };\n\n defaultExport$2.prototype.renderScatterChart = function renderScatterChart (chart, chartType) {\n chartType = chartType || \"scatter\";\n\n var options = jsOptions$2(chart, chart.options);\n setFormatOptions$1(chart, options, chartType);\n\n if (!(\"showLine\" in options)) {\n options.showLine = false;\n }\n\n var data = createDataTable(chart, options, chartType);\n\n options.scales.x.type = options.scales.x.type || \"linear\";\n options.scales.x.position = options.scales.x.position || \"bottom\";\n\n // prevent grouping hover and tooltips\n if (!(\"mode\" in options.interaction)) {\n options.interaction.mode = \"nearest\";\n }\n\n this.drawChart(chart, chartType, data, options);\n };\n\n defaultExport$2.prototype.renderBubbleChart = function renderBubbleChart (chart) {\n this.renderScatterChart(chart, \"bubble\");\n };\n\n defaultExport$2.prototype.destroy = function destroy (chart) {\n if (chart.chart) {\n chart.chart.destroy();\n }\n };\n\n defaultExport$2.prototype.drawChart = function drawChart (chart, type, data, options) {\n this.destroy(chart);\n if (chart.destroyed) { return; }\n\n var chartOptions = {\n type: type,\n data: data,\n options: options\n };\n\n if (chart.options.code) {\n window.console.log(\"new Chart(ctx, \" + JSON.stringify(chartOptions) + \");\");\n }\n\n chart.element.innerHTML = \"\";\n var ctx = chart.element.getElementsByTagName(\"CANVAS\")[0];\n chart.chart = new this.library(ctx, chartOptions);\n };\n\n var defaultOptions$1 = {\n chart: {},\n xAxis: {\n title: {\n text: null\n },\n labels: {\n style: {\n fontSize: \"12px\"\n }\n }\n },\n yAxis: {\n title: {\n text: null\n },\n labels: {\n style: {\n fontSize: \"12px\"\n }\n }\n },\n title: {\n text: null\n },\n credits: {\n enabled: false\n },\n legend: {\n borderWidth: 0\n },\n tooltip: {\n style: {\n fontSize: \"12px\"\n }\n },\n plotOptions: {\n areaspline: {},\n area: {},\n series: {\n marker: {}\n }\n },\n time: {\n useUTC: false\n }\n };\n\n var hideLegend$1 = function (options, legend, hideLegend) {\n if (legend !== undefined) {\n options.legend.enabled = !!legend;\n if (legend && legend !== true) {\n if (legend === \"top\" || legend === \"bottom\") {\n options.legend.verticalAlign = legend;\n } else {\n options.legend.layout = \"vertical\";\n options.legend.verticalAlign = \"middle\";\n options.legend.align = legend;\n }\n }\n } else if (hideLegend) {\n options.legend.enabled = false;\n }\n };\n\n var setTitle$1 = function (options, title) {\n options.title.text = title;\n };\n\n var setMin$1 = function (options, min) {\n options.yAxis.min = min;\n };\n\n var setMax$1 = function (options, max) {\n options.yAxis.max = max;\n };\n\n var setStacked$1 = function (options, stacked) {\n var stackedValue = stacked ? (stacked === true ? \"normal\" : stacked) : null;\n options.plotOptions.series.stacking = stackedValue;\n options.plotOptions.area.stacking = stackedValue;\n options.plotOptions.areaspline.stacking = stackedValue;\n };\n\n var setXtitle$1 = function (options, title) {\n options.xAxis.title.text = title;\n };\n\n var setYtitle$1 = function (options, title) {\n options.yAxis.title.text = title;\n };\n\n var jsOptions$1 = jsOptionsFunc(defaultOptions$1, hideLegend$1, setTitle$1, setMin$1, setMax$1, setStacked$1, setXtitle$1, setYtitle$1);\n\n var setFormatOptions = function(chart, options, chartType) {\n var formatOptions = {\n prefix: chart.options.prefix,\n suffix: chart.options.suffix,\n thousands: chart.options.thousands,\n decimal: chart.options.decimal,\n precision: chart.options.precision,\n round: chart.options.round,\n zeros: chart.options.zeros\n };\n\n // skip when axis is an array (like with min/max)\n if (chartType !== \"pie\" && !isArray(options.yAxis) && !options.yAxis.labels.formatter) {\n options.yAxis.labels.formatter = function () {\n return formatValue(\"\", this.value, formatOptions);\n };\n }\n\n if (!options.tooltip.pointFormatter && !options.tooltip.pointFormat) {\n options.tooltip.pointFormatter = function () {\n return '\\u25CF ' + formatValue(this.series.name + ': ', this.y, formatOptions) + '
';\n };\n }\n };\n\n var defaultExport$1 = function defaultExport(library) {\n this.name = \"highcharts\";\n this.library = library;\n };\n\n defaultExport$1.prototype.renderLineChart = function renderLineChart (chart, chartType) {\n chartType = chartType || \"spline\";\n var chartOptions = {};\n if (chartType === \"areaspline\") {\n chartOptions = {\n plotOptions: {\n areaspline: {\n stacking: \"normal\"\n },\n area: {\n stacking: \"normal\"\n },\n series: {\n marker: {\n enabled: false\n }\n }\n }\n };\n }\n\n if (chart.options.curve === false) {\n if (chartType === \"areaspline\") {\n chartType = \"area\";\n } else if (chartType === \"spline\") {\n chartType = \"line\";\n }\n }\n\n var options = jsOptions$1(chart, chart.options, chartOptions), data, i, j;\n if (chart.xtype === \"number\") {\n options.xAxis.type = options.xAxis.type || \"linear\";\n } else {\n options.xAxis.type = chart.xtype === \"string\" ? \"category\" : \"datetime\";\n }\n if (!options.chart.type) {\n options.chart.type = chartType;\n }\n setFormatOptions(chart, options, chartType);\n\n var series = chart.data;\n for (i = 0; i < series.length; i++) {\n series[i].name = series[i].name || \"Value\";\n data = series[i].data;\n if (chart.xtype === \"datetime\") {\n for (j = 0; j < data.length; j++) {\n data[j][0] = data[j][0].getTime();\n }\n }\n series[i].marker = {symbol: \"circle\"};\n if (chart.options.points === false) {\n series[i].marker.enabled = false;\n }\n }\n\n this.drawChart(chart, series, options);\n };\n\n defaultExport$1.prototype.renderScatterChart = function renderScatterChart (chart) {\n var options = jsOptions$1(chart, chart.options, {});\n options.chart.type = \"scatter\";\n this.drawChart(chart, chart.data, options);\n };\n\n defaultExport$1.prototype.renderPieChart = function renderPieChart (chart) {\n var chartOptions = merge(defaultOptions$1, {});\n\n if (chart.options.colors) {\n chartOptions.colors = chart.options.colors;\n }\n if (chart.options.donut) {\n chartOptions.plotOptions = {pie: {innerSize: \"50%\"}};\n }\n\n if (\"legend\" in chart.options) {\n hideLegend$1(chartOptions, chart.options.legend);\n }\n\n if (chart.options.title) {\n setTitle$1(chartOptions, chart.options.title);\n }\n\n var options = merge(chartOptions, chart.options.library || {});\n setFormatOptions(chart, options, \"pie\");\n var series = [{\n type: \"pie\",\n name: chart.options.label || \"Value\",\n data: chart.data\n }];\n\n this.drawChart(chart, series, options);\n };\n\n defaultExport$1.prototype.renderColumnChart = function renderColumnChart (chart, chartType) {\n chartType = chartType || \"column\";\n var series = chart.data;\n var options = jsOptions$1(chart, chart.options), i, j, s, d, rows = [], categories = [];\n options.chart.type = chartType;\n setFormatOptions(chart, options, chartType);\n\n for (i = 0; i < series.length; i++) {\n s = series[i];\n\n for (j = 0; j < s.data.length; j++) {\n d = s.data[j];\n if (!rows[d[0]]) {\n rows[d[0]] = new Array(series.length);\n categories.push(d[0]);\n }\n rows[d[0]][i] = d[1];\n }\n }\n\n if (chart.xtype === \"number\") {\n categories.sort(sortByNumber);\n }\n\n options.xAxis.categories = categories;\n\n var newSeries = [], d2;\n for (i = 0; i < series.length; i++) {\n d = [];\n for (j = 0; j < categories.length; j++) {\n d.push(rows[categories[j]][i] || 0);\n }\n\n d2 = {\n name: series[i].name || \"Value\",\n data: d\n };\n if (series[i].stack) {\n d2.stack = series[i].stack;\n }\n\n newSeries.push(d2);\n }\n\n this.drawChart(chart, newSeries, options);\n };\n\n defaultExport$1.prototype.renderBarChart = function renderBarChart (chart) {\n this.renderColumnChart(chart, \"bar\");\n };\n\n defaultExport$1.prototype.renderAreaChart = function renderAreaChart (chart) {\n this.renderLineChart(chart, \"areaspline\");\n };\n\n defaultExport$1.prototype.destroy = function destroy (chart) {\n if (chart.chart) {\n chart.chart.destroy();\n }\n };\n\n defaultExport$1.prototype.drawChart = function drawChart (chart, data, options) {\n this.destroy(chart);\n if (chart.destroyed) { return; }\n\n options.chart.renderTo = chart.element.id;\n options.series = data;\n\n if (chart.options.code) {\n window.console.log(\"new Highcharts.Chart(\" + JSON.stringify(options) + \");\");\n }\n\n chart.chart = new this.library.Chart(options);\n };\n\n var loaded = {};\n var callbacks = [];\n\n // Set chart options\n var defaultOptions = {\n chartArea: {},\n fontName: \"'Lucida Grande', 'Lucida Sans Unicode', Verdana, Arial, Helvetica, sans-serif\",\n pointSize: 6,\n legend: {\n textStyle: {\n fontSize: 12,\n color: \"#444\"\n },\n alignment: \"center\",\n position: \"right\"\n },\n curveType: \"function\",\n hAxis: {\n textStyle: {\n color: \"#666\",\n fontSize: 12\n },\n titleTextStyle: {},\n gridlines: {\n color: \"transparent\"\n },\n baselineColor: \"#ccc\",\n viewWindow: {}\n },\n vAxis: {\n textStyle: {\n color: \"#666\",\n fontSize: 12\n },\n titleTextStyle: {},\n baselineColor: \"#ccc\",\n viewWindow: {}\n },\n tooltip: {\n textStyle: {\n color: \"#666\",\n fontSize: 12\n }\n }\n };\n\n var hideLegend = function (options, legend, hideLegend) {\n if (legend !== undefined) {\n var position;\n if (!legend) {\n position = \"none\";\n } else if (legend === true) {\n position = \"right\";\n } else {\n position = legend;\n }\n options.legend.position = position;\n } else if (hideLegend) {\n options.legend.position = \"none\";\n }\n };\n\n var setTitle = function (options, title) {\n options.title = title;\n options.titleTextStyle = {color: \"#333\", fontSize: \"20px\"};\n };\n\n var setMin = function (options, min) {\n options.vAxis.viewWindow.min = min;\n };\n\n var setMax = function (options, max) {\n options.vAxis.viewWindow.max = max;\n };\n\n var setBarMin = function (options, min) {\n options.hAxis.viewWindow.min = min;\n };\n\n var setBarMax = function (options, max) {\n options.hAxis.viewWindow.max = max;\n };\n\n var setStacked = function (options, stacked) {\n options.isStacked = stacked ? stacked : false;\n };\n\n var setXtitle = function (options, title) {\n options.hAxis.title = title;\n options.hAxis.titleTextStyle.italic = false;\n };\n\n var setYtitle = function (options, title) {\n options.vAxis.title = title;\n options.vAxis.titleTextStyle.italic = false;\n };\n\n var jsOptions = jsOptionsFunc(defaultOptions, hideLegend, setTitle, setMin, setMax, setStacked, setXtitle, setYtitle);\n\n var resize = function (callback) {\n if (window.attachEvent) {\n window.attachEvent(\"onresize\", callback);\n } else if (window.addEventListener) {\n window.addEventListener(\"resize\", callback, true);\n }\n callback();\n };\n\n var defaultExport = function defaultExport(library) {\n this.name = \"google\";\n this.library = library;\n };\n\n defaultExport.prototype.renderLineChart = function renderLineChart (chart) {\n var this$1$1 = this;\n\n this.waitForLoaded(chart, function () {\n var chartOptions = {};\n\n if (chart.options.curve === false) {\n chartOptions.curveType = \"none\";\n }\n\n if (chart.options.points === false) {\n chartOptions.pointSize = 0;\n }\n\n var options = jsOptions(chart, chart.options, chartOptions);\n var data = this$1$1.createDataTable(chart.data, chart.xtype);\n\n this$1$1.drawChart(chart, \"LineChart\", data, options);\n });\n };\n\n defaultExport.prototype.renderPieChart = function renderPieChart (chart) {\n var this$1$1 = this;\n\n this.waitForLoaded(chart, function () {\n var chartOptions = {\n chartArea: {\n top: \"10%\",\n height: \"80%\"\n },\n legend: {}\n };\n if (chart.options.colors) {\n chartOptions.colors = chart.options.colors;\n }\n if (chart.options.donut) {\n chartOptions.pieHole = 0.5;\n }\n if (\"legend\" in chart.options) {\n hideLegend(chartOptions, chart.options.legend);\n }\n if (chart.options.title) {\n setTitle(chartOptions, chart.options.title);\n }\n var options = merge(merge(defaultOptions, chartOptions), chart.options.library || {});\n\n var data = new this$1$1.library.visualization.DataTable();\n data.addColumn(\"string\", \"\");\n data.addColumn(\"number\", \"Value\");\n data.addRows(chart.data);\n\n this$1$1.drawChart(chart, \"PieChart\", data, options);\n });\n };\n\n defaultExport.prototype.renderColumnChart = function renderColumnChart (chart) {\n var this$1$1 = this;\n\n this.waitForLoaded(chart, function () {\n var options = jsOptions(chart, chart.options);\n var data = this$1$1.createDataTable(chart.data, chart.xtype);\n\n this$1$1.drawChart(chart, \"ColumnChart\", data, options);\n });\n };\n\n defaultExport.prototype.renderBarChart = function renderBarChart (chart) {\n var this$1$1 = this;\n\n this.waitForLoaded(chart, function () {\n var chartOptions = {\n hAxis: {\n gridlines: {\n color: \"#ccc\"\n }\n }\n };\n var options = jsOptionsFunc(defaultOptions, hideLegend, setTitle, setBarMin, setBarMax, setStacked, setXtitle, setYtitle)(chart, chart.options, chartOptions);\n var data = this$1$1.createDataTable(chart.data, chart.xtype);\n\n this$1$1.drawChart(chart, \"BarChart\", data, options);\n });\n };\n\n defaultExport.prototype.renderAreaChart = function renderAreaChart (chart) {\n var this$1$1 = this;\n\n this.waitForLoaded(chart, function () {\n var chartOptions = {\n isStacked: true,\n pointSize: 0,\n areaOpacity: 0.5\n };\n\n var options = jsOptions(chart, chart.options, chartOptions);\n var data = this$1$1.createDataTable(chart.data, chart.xtype);\n\n this$1$1.drawChart(chart, \"AreaChart\", data, options);\n });\n };\n\n defaultExport.prototype.renderGeoChart = function renderGeoChart (chart) {\n var this$1$1 = this;\n\n this.waitForLoaded(chart, \"geochart\", function () {\n var chartOptions = {\n legend: \"none\",\n colorAxis: {\n colors: chart.options.colors || [\"#f6c7b6\", \"#ce502d\"]\n }\n };\n var options = merge(merge(defaultOptions, chartOptions), chart.options.library || {});\n\n var data = new this$1$1.library.visualization.DataTable();\n data.addColumn(\"string\", \"\");\n data.addColumn(\"number\", chart.options.label || \"Value\");\n data.addRows(chart.data);\n\n this$1$1.drawChart(chart, \"GeoChart\", data, options);\n });\n };\n\n defaultExport.prototype.renderScatterChart = function renderScatterChart (chart) {\n var this$1$1 = this;\n\n this.waitForLoaded(chart, function () {\n var chartOptions = {};\n var options = jsOptions(chart, chart.options, chartOptions);\n\n var series = chart.data, rows2 = [], i, j, data, d;\n for (i = 0; i < series.length; i++) {\n series[i].name = series[i].name || \"Value\";\n d = series[i].data;\n for (j = 0; j < d.length; j++) {\n var row = new Array(series.length + 1);\n row[0] = d[j][0];\n row[i + 1] = d[j][1];\n rows2.push(row);\n }\n }\n\n data = new this$1$1.library.visualization.DataTable();\n data.addColumn(\"number\", \"\");\n for (i = 0; i < series.length; i++) {\n data.addColumn(\"number\", series[i].name);\n }\n data.addRows(rows2);\n\n this$1$1.drawChart(chart, \"ScatterChart\", data, options);\n });\n };\n\n defaultExport.prototype.renderTimeline = function renderTimeline (chart) {\n var this$1$1 = this;\n\n this.waitForLoaded(chart, \"timeline\", function () {\n var chartOptions = {\n legend: \"none\"\n };\n\n if (chart.options.colors) {\n chartOptions.colors = chart.options.colors;\n }\n var options = merge(merge(defaultOptions, chartOptions), chart.options.library || {});\n\n var data = new this$1$1.library.visualization.DataTable();\n data.addColumn({type: \"string\", id: \"Name\"});\n data.addColumn({type: \"date\", id: \"Start\"});\n data.addColumn({type: \"date\", id: \"End\"});\n data.addRows(chart.data);\n\n chart.element.style.lineHeight = \"normal\";\n\n this$1$1.drawChart(chart, \"Timeline\", data, options);\n });\n };\n\n // TODO remove resize events\n defaultExport.prototype.destroy = function destroy (chart) {\n if (chart.chart) {\n chart.chart.clearChart();\n }\n };\n\n defaultExport.prototype.drawChart = function drawChart (chart, type, data, options) {\n this.destroy(chart);\n if (chart.destroyed) { return; }\n\n if (chart.options.code) {\n window.console.log(\"var data = new google.visualization.DataTable(\" + data.toJSON() + \");\\nvar chart = new google.visualization.\" + type + \"(element);\\nchart.draw(data, \" + JSON.stringify(options) + \");\");\n }\n\n chart.chart = new this.library.visualization[type](chart.element);\n resize(function () {\n chart.chart.draw(data, options);\n });\n };\n\n defaultExport.prototype.waitForLoaded = function waitForLoaded (chart, pack, callback) {\n var this$1$1 = this;\n\n if (!callback) {\n callback = pack;\n pack = \"corechart\";\n }\n\n callbacks.push({pack: pack, callback: callback});\n\n if (loaded[pack]) {\n this.runCallbacks();\n } else {\n loaded[pack] = true;\n\n // https://groups.google.com/forum/#!topic/google-visualization-api/fMKJcyA2yyI\n var loadOptions = {\n packages: [pack],\n callback: function () { this$1$1.runCallbacks(); }\n };\n var config = chart.__config();\n if (config.language) {\n loadOptions.language = config.language;\n }\n if (pack === \"geochart\" && config.mapsApiKey) {\n loadOptions.mapsApiKey = config.mapsApiKey;\n }\n\n this.library.charts.load(\"current\", loadOptions);\n }\n };\n\n defaultExport.prototype.runCallbacks = function runCallbacks () {\n var cb, call;\n for (var i = 0; i < callbacks.length; i++) {\n cb = callbacks[i];\n call = this.library.visualization && ((cb.pack === \"corechart\" && this.library.visualization.LineChart) || (cb.pack === \"timeline\" && this.library.visualization.Timeline) || (cb.pack === \"geochart\" && this.library.visualization.GeoChart));\n if (call) {\n cb.callback();\n callbacks.splice(i, 1);\n i--;\n }\n }\n };\n\n // cant use object as key\n defaultExport.prototype.createDataTable = function createDataTable (series, columnType) {\n var i, j, s, d, key, rows = [], sortedLabels = [];\n for (i = 0; i < series.length; i++) {\n s = series[i];\n series[i].name = series[i].name || \"Value\";\n\n for (j = 0; j < s.data.length; j++) {\n d = s.data[j];\n key = (columnType === \"datetime\") ? d[0].getTime() : d[0];\n if (!rows[key]) {\n rows[key] = new Array(series.length);\n sortedLabels.push(key);\n }\n rows[key][i] = toFloat(d[1]);\n }\n }\n\n var rows2 = [];\n var day = true;\n var value;\n for (j = 0; j < sortedLabels.length; j++) {\n i = sortedLabels[j];\n if (columnType === \"datetime\") {\n value = new Date(toFloat(i));\n day = day && isDay(value);\n } else if (columnType === \"number\") {\n value = toFloat(i);\n } else {\n value = i;\n }\n rows2.push([value].concat(rows[i]));\n }\n if (columnType === \"datetime\") {\n rows2.sort(sortByTime);\n } else if (columnType === \"number\") {\n rows2.sort(sortByNumberSeries);\n\n for (i = 0; i < rows2.length; i++) {\n rows2[i][0] = toStr(rows2[i][0]);\n }\n\n columnType = \"string\";\n }\n\n // create datatable\n var data = new this.library.visualization.DataTable();\n columnType = columnType === \"datetime\" && day ? \"date\" : columnType;\n data.addColumn(columnType, \"\");\n for (i = 0; i < series.length; i++) {\n data.addColumn(\"number\", series[i].name);\n }\n data.addRows(rows2);\n\n return data;\n };\n\n function formatSeriesData(data, keyType) {\n var r = [], j, keyFunc;\n\n if (keyType === \"number\") {\n keyFunc = toFloat;\n } else if (keyType === \"datetime\") {\n keyFunc = toDate;\n } else {\n keyFunc = toStr;\n }\n\n if (keyType === \"bubble\") {\n for (j = 0; j < data.length; j++) {\n r.push([toFloat(data[j][0]), toFloat(data[j][1]), toFloat(data[j][2])]);\n }\n } else {\n for (j = 0; j < data.length; j++) {\n r.push([keyFunc(data[j][0]), toFloat(data[j][1])]);\n }\n }\n\n if (keyType === \"datetime\") {\n r.sort(sortByTime);\n } else if (keyType === \"number\") {\n r.sort(sortByNumberSeries);\n }\n\n return r;\n }\n\n function detectXType(series, noDatetime, options) {\n if (dataEmpty(series)) {\n if ((options.xmin || options.xmax) && (!options.xmin || isDate(options.xmin)) && (!options.xmax || isDate(options.xmax))) {\n return \"datetime\";\n } else {\n return \"number\";\n }\n } else if (detectXTypeWithFunction(series, isNumber)) {\n return \"number\";\n } else if (!noDatetime && detectXTypeWithFunction(series, isDate)) {\n return \"datetime\";\n } else {\n return \"string\";\n }\n }\n\n function detectXTypeWithFunction(series, func) {\n var i, j, data;\n for (i = 0; i < series.length; i++) {\n data = toArr(series[i].data);\n for (j = 0; j < data.length; j++) {\n if (!func(data[j][0])) {\n return false;\n }\n }\n }\n return true;\n }\n\n // creates a shallow copy of each element of the array\n // elements are expected to be objects\n function copySeries(series) {\n var newSeries = [], i, j;\n for (i = 0; i < series.length; i++) {\n var copy = {};\n for (j in series[i]) {\n if (series[i].hasOwnProperty(j)) {\n copy[j] = series[i][j];\n }\n }\n newSeries.push(copy);\n }\n return newSeries;\n }\n\n function processSeries(chart, keyType, noDatetime) {\n var i;\n\n var opts = chart.options;\n var series = chart.rawData;\n\n // see if one series or multiple\n chart.singleSeriesFormat = (!isArray(series) || typeof series[0] !== \"object\" || isArray(series[0]));\n if (chart.singleSeriesFormat) {\n series = [{name: opts.label, data: series}];\n }\n\n // convert to array\n // must come before dataEmpty check\n series = copySeries(series);\n for (i = 0; i < series.length; i++) {\n series[i].data = toArr(series[i].data);\n }\n\n chart.xtype = keyType ? keyType : (opts.discrete ? \"string\" : detectXType(series, noDatetime, opts));\n\n // right format\n for (i = 0; i < series.length; i++) {\n series[i].data = formatSeriesData(series[i].data, chart.xtype);\n }\n\n return series;\n }\n\n function processSimple(chart) {\n var perfectData = toArr(chart.rawData), i;\n for (i = 0; i < perfectData.length; i++) {\n perfectData[i] = [toStr(perfectData[i][0]), toFloat(perfectData[i][1])];\n }\n return perfectData;\n }\n\n function dataEmpty(data, chartType) {\n if (chartType === \"PieChart\" || chartType === \"GeoChart\" || chartType === \"Timeline\") {\n return data.length === 0;\n } else {\n for (var i = 0; i < data.length; i++) {\n if (data[i].data.length > 0) {\n return false;\n }\n }\n return true;\n }\n }\n\n function addDownloadButton(chart) {\n var element = chart.element;\n var link = document.createElement(\"a\");\n\n var download = chart.options.download;\n if (download === true) {\n download = {};\n } else if (typeof download === \"string\") {\n download = {filename: download};\n }\n link.download = download.filename || \"chart.png\"; // https://caniuse.com/download\n\n link.style.position = \"absolute\";\n link.style.top = \"20px\";\n link.style.right = \"20px\";\n link.style.zIndex = 1000;\n link.style.lineHeight = \"20px\";\n link.target = \"_blank\"; // for safari\n var image = document.createElement(\"img\");\n image.alt = \"Download\";\n image.style.border = \"none\";\n // icon from font-awesome\n // http://fa2png.io/\n image.src = \"data:image/png;base64,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\";\n link.appendChild(image);\n element.style.position = \"relative\";\n\n chart.__downloadAttached = true;\n\n // mouseenter\n chart.__enterEvent = addEvent(element, \"mouseover\", function(e) {\n var related = e.relatedTarget;\n // check download option again to ensure it wasn't changed\n if ((!related || (related !== this && !childOf(this, related))) && chart.options.download) {\n link.href = chart.toImage(download);\n element.appendChild(link);\n }\n });\n\n // mouseleave\n chart.__leaveEvent = addEvent(element, \"mouseout\", function(e) {\n var related = e.relatedTarget;\n if (!related || (related !== this && !childOf(this, related))) {\n if (link.parentNode) {\n link.parentNode.removeChild(link);\n }\n }\n });\n }\n\n // https://stackoverflow.com/questions/10149963/adding-event-listener-cross-browser\n function addEvent(elem, event, fn) {\n if (elem.addEventListener) {\n elem.addEventListener(event, fn, false);\n return fn;\n } else {\n var fn2 = function() {\n // set the this pointer same as addEventListener when fn is called\n return(fn.call(elem, window.event));\n };\n elem.attachEvent(\"on\" + event, fn2);\n return fn2;\n }\n }\n\n function removeEvent(elem, event, fn) {\n if (elem.removeEventListener) {\n elem.removeEventListener(event, fn, false);\n } else {\n elem.detachEvent(\"on\" + event, fn);\n }\n }\n\n // https://gist.github.com/shawnbot/4166283\n function childOf(p, c) {\n if (p === c) { return false; }\n while (c && c !== p) { c = c.parentNode; }\n return c === p;\n }\n\n var pendingRequests = [], runningRequests = 0, maxRequests = 4;\n\n function pushRequest(url, success, error) {\n pendingRequests.push([url, success, error]);\n runNext();\n }\n\n function runNext() {\n if (runningRequests < maxRequests) {\n var request = pendingRequests.shift();\n if (request) {\n runningRequests++;\n getJSON(request[0], request[1], request[2]);\n runNext();\n }\n }\n }\n\n function requestComplete() {\n runningRequests--;\n runNext();\n }\n\n function getJSON(url, success, error) {\n ajaxCall(url, success, function (jqXHR, textStatus, errorThrown) {\n var message = (typeof errorThrown === \"string\") ? errorThrown : errorThrown.message;\n error(message);\n });\n }\n\n function ajaxCall(url, success, error) {\n var $ = window.jQuery || window.Zepto || window.$;\n\n if ($ && $.ajax) {\n $.ajax({\n dataType: \"json\",\n url: url,\n success: success,\n error: error,\n complete: requestComplete\n });\n } else {\n var xhr = new XMLHttpRequest();\n xhr.open(\"GET\", url, true);\n xhr.setRequestHeader(\"Content-Type\", \"application/json\");\n xhr.onload = function () {\n requestComplete();\n if (xhr.status === 200) {\n success(JSON.parse(xhr.responseText), xhr.statusText, xhr);\n } else {\n error(xhr, \"error\", xhr.statusText);\n }\n };\n xhr.send();\n }\n }\n\n var config = {};\n var adapters = [];\n\n // helpers\n\n function setText(element, text) {\n if (document.body.innerText) {\n element.innerText = text;\n } else {\n element.textContent = text;\n }\n }\n\n // TODO remove prefix for all messages\n function chartError(element, message, noPrefix) {\n if (!noPrefix) {\n message = \"Error Loading Chart: \" + message;\n }\n setText(element, message);\n element.style.color = \"#ff0000\";\n }\n\n function errorCatcher(chart) {\n try {\n chart.__render();\n } catch (err) {\n chartError(chart.element, err.message);\n throw err;\n }\n }\n\n function fetchDataSource(chart, dataSource, showLoading) {\n // only show loading message for urls and callbacks\n if (showLoading && chart.options.loading && (typeof dataSource === \"string\" || typeof dataSource === \"function\")) {\n setText(chart.element, chart.options.loading);\n }\n\n if (typeof dataSource === \"string\") {\n pushRequest(dataSource, function (data) {\n chart.rawData = data;\n errorCatcher(chart);\n }, function (message) {\n chartError(chart.element, message);\n });\n } else if (typeof dataSource === \"function\") {\n try {\n dataSource(function (data) {\n chart.rawData = data;\n errorCatcher(chart);\n }, function (message) {\n chartError(chart.element, message, true);\n });\n } catch (err) {\n chartError(chart.element, err, true);\n }\n } else {\n chart.rawData = dataSource;\n errorCatcher(chart);\n }\n }\n\n function getAdapterType(library) {\n if (library) {\n if (library.product === \"Highcharts\") {\n return defaultExport$1;\n } else if (library.charts) {\n return defaultExport;\n } else if (isFunction(library)) {\n return defaultExport$2;\n }\n }\n throw new Error(\"Unknown adapter\");\n }\n\n function addAdapter(library) {\n var adapterType = getAdapterType(library);\n var adapter = new adapterType(library);\n\n if (adapters.indexOf(adapter) === -1) {\n adapters.push(adapter);\n }\n }\n\n function loadAdapters() {\n if (\"Chart\" in window) {\n addAdapter(window.Chart);\n }\n\n if (\"Highcharts\" in window) {\n addAdapter(window.Highcharts);\n }\n\n if (window.google && window.google.charts) {\n addAdapter(window.google);\n }\n }\n\n function renderChart(chartType, chart) {\n if (dataEmpty(chart.data, chartType)) {\n var message = chart.options.empty || (chart.options.messages && chart.options.messages.empty) || \"No data\";\n setText(chart.element, message);\n } else {\n callAdapter(chartType, chart);\n if (chart.options.download && !chart.__downloadAttached && chart.adapter === \"chartjs\") {\n addDownloadButton(chart);\n }\n }\n }\n\n // TODO remove chartType if cross-browser way\n // to get the name of the chart class\n function callAdapter(chartType, chart) {\n var i, adapter, fnName, adapterName;\n fnName = \"render\" + chartType;\n adapterName = chart.options.adapter;\n\n loadAdapters();\n\n for (i = 0; i < adapters.length; i++) {\n adapter = adapters[i];\n if ((!adapterName || adapterName === adapter.name) && isFunction(adapter[fnName])) {\n chart.adapter = adapter.name;\n chart.__adapterObject = adapter;\n return adapter[fnName](chart);\n }\n }\n\n if (adapters.length > 0) {\n throw new Error(\"No charting library found for \" + chartType);\n } else {\n throw new Error(\"No charting libraries found - be sure to include one before your charts\");\n }\n }\n\n // define classes\n\n var Chart = function Chart(element, dataSource, options) {\n var elementId;\n if (typeof element === \"string\") {\n elementId = element;\n element = document.getElementById(element);\n if (!element) {\n throw new Error(\"No element with id \" + elementId);\n }\n }\n this.element = element;\n this.options = merge(Chartkick.options, options || {});\n this.dataSource = dataSource;\n\n Chartkick.charts[element.id] = this;\n\n fetchDataSource(this, dataSource, true);\n\n if (this.options.refresh) {\n this.startRefresh();\n }\n };\n\n Chart.prototype.getElement = function getElement () {\n return this.element;\n };\n\n Chart.prototype.getDataSource = function getDataSource () {\n return this.dataSource;\n };\n\n Chart.prototype.getData = function getData () {\n return this.data;\n };\n\n Chart.prototype.getOptions = function getOptions () {\n return this.options;\n };\n\n Chart.prototype.getChartObject = function getChartObject () {\n return this.chart;\n };\n\n Chart.prototype.getAdapter = function getAdapter () {\n return this.adapter;\n };\n\n Chart.prototype.updateData = function updateData (dataSource, options) {\n this.dataSource = dataSource;\n if (options) {\n this.__updateOptions(options);\n }\n fetchDataSource(this, dataSource, true);\n };\n\n Chart.prototype.setOptions = function setOptions (options) {\n this.__updateOptions(options);\n this.redraw();\n };\n\n Chart.prototype.redraw = function redraw () {\n fetchDataSource(this, this.rawData);\n };\n\n Chart.prototype.refreshData = function refreshData () {\n if (typeof this.dataSource === \"string\") {\n // prevent browser from caching\n var sep = this.dataSource.indexOf(\"?\") === -1 ? \"?\" : \"&\";\n var url = this.dataSource + sep + \"_=\" + (new Date()).getTime();\n fetchDataSource(this, url);\n } else if (typeof this.dataSource === \"function\") {\n fetchDataSource(this, this.dataSource);\n }\n };\n\n Chart.prototype.startRefresh = function startRefresh () {\n var this$1$1 = this;\n\n var refresh = this.options.refresh;\n\n if (refresh && typeof this.dataSource !== \"string\" && typeof this.dataSource !== \"function\") {\n throw new Error(\"Data source must be a URL or callback for refresh\");\n }\n\n if (!this.intervalId) {\n if (refresh) {\n this.intervalId = setInterval( function () {\n this$1$1.refreshData();\n }, refresh * 1000);\n } else {\n throw new Error(\"No refresh interval\");\n }\n }\n };\n\n Chart.prototype.stopRefresh = function stopRefresh () {\n if (this.intervalId) {\n clearInterval(this.intervalId);\n this.intervalId = null;\n }\n };\n\n Chart.prototype.toImage = function toImage (download) {\n if (this.adapter === \"chartjs\") {\n if (download && download.background && download.background !== \"transparent\") {\n // https://stackoverflow.com/questions/30464750/chartjs-line-chart-set-background-color\n var canvas = this.chart.canvas;\n var ctx = this.chart.ctx;\n var tmpCanvas = document.createElement(\"canvas\");\n var tmpCtx = tmpCanvas.getContext(\"2d\");\n tmpCanvas.width = ctx.canvas.width;\n tmpCanvas.height = ctx.canvas.height;\n tmpCtx.fillStyle = download.background;\n tmpCtx.fillRect(0, 0, tmpCanvas.width, tmpCanvas.height);\n tmpCtx.drawImage(canvas, 0, 0);\n return tmpCanvas.toDataURL(\"image/png\");\n } else {\n return this.chart.toBase64Image();\n }\n } else {\n throw new Error(\"Feature only available for Chart.js\");\n }\n };\n\n Chart.prototype.destroy = function destroy () {\n this.destroyed = true;\n this.stopRefresh();\n\n if (this.__adapterObject) {\n this.__adapterObject.destroy(this);\n }\n\n if (this.__enterEvent) {\n removeEvent(this.element, \"mouseover\", this.__enterEvent);\n }\n\n if (this.__leaveEvent) {\n removeEvent(this.element, \"mouseout\", this.__leaveEvent);\n }\n };\n\n Chart.prototype.__updateOptions = function __updateOptions (options) {\n var updateRefresh = options.refresh && options.refresh !== this.options.refresh;\n this.options = merge(Chartkick.options, options);\n if (updateRefresh) {\n this.stopRefresh();\n this.startRefresh();\n }\n };\n\n Chart.prototype.__render = function __render () {\n this.data = this.__processData();\n renderChart(this.__chartName(), this);\n };\n\n Chart.prototype.__config = function __config () {\n return config;\n };\n\n var LineChart = /*@__PURE__*/(function (Chart) {\n function LineChart () {\n Chart.apply(this, arguments);\n }\n\n if ( Chart ) LineChart.__proto__ = Chart;\n LineChart.prototype = Object.create( Chart && Chart.prototype );\n LineChart.prototype.constructor = LineChart;\n\n LineChart.prototype.__processData = function __processData () {\n return processSeries(this);\n };\n\n LineChart.prototype.__chartName = function __chartName () {\n return \"LineChart\";\n };\n\n return LineChart;\n }(Chart));\n\n var PieChart = /*@__PURE__*/(function (Chart) {\n function PieChart () {\n Chart.apply(this, arguments);\n }\n\n if ( Chart ) PieChart.__proto__ = Chart;\n PieChart.prototype = Object.create( Chart && Chart.prototype );\n PieChart.prototype.constructor = PieChart;\n\n PieChart.prototype.__processData = function __processData () {\n return processSimple(this);\n };\n\n PieChart.prototype.__chartName = function __chartName () {\n return \"PieChart\";\n };\n\n return PieChart;\n }(Chart));\n\n var ColumnChart = /*@__PURE__*/(function (Chart) {\n function ColumnChart () {\n Chart.apply(this, arguments);\n }\n\n if ( Chart ) ColumnChart.__proto__ = Chart;\n ColumnChart.prototype = Object.create( Chart && Chart.prototype );\n ColumnChart.prototype.constructor = ColumnChart;\n\n ColumnChart.prototype.__processData = function __processData () {\n return processSeries(this, null, true);\n };\n\n ColumnChart.prototype.__chartName = function __chartName () {\n return \"ColumnChart\";\n };\n\n return ColumnChart;\n }(Chart));\n\n var BarChart = /*@__PURE__*/(function (Chart) {\n function BarChart () {\n Chart.apply(this, arguments);\n }\n\n if ( Chart ) BarChart.__proto__ = Chart;\n BarChart.prototype = Object.create( Chart && Chart.prototype );\n BarChart.prototype.constructor = BarChart;\n\n BarChart.prototype.__processData = function __processData () {\n return processSeries(this, null, true);\n };\n\n BarChart.prototype.__chartName = function __chartName () {\n return \"BarChart\";\n };\n\n return BarChart;\n }(Chart));\n\n var AreaChart = /*@__PURE__*/(function (Chart) {\n function AreaChart () {\n Chart.apply(this, arguments);\n }\n\n if ( Chart ) AreaChart.__proto__ = Chart;\n AreaChart.prototype = Object.create( Chart && Chart.prototype );\n AreaChart.prototype.constructor = AreaChart;\n\n AreaChart.prototype.__processData = function __processData () {\n return processSeries(this);\n };\n\n AreaChart.prototype.__chartName = function __chartName () {\n return \"AreaChart\";\n };\n\n return AreaChart;\n }(Chart));\n\n var GeoChart = /*@__PURE__*/(function (Chart) {\n function GeoChart () {\n Chart.apply(this, arguments);\n }\n\n if ( Chart ) GeoChart.__proto__ = Chart;\n GeoChart.prototype = Object.create( Chart && Chart.prototype );\n GeoChart.prototype.constructor = GeoChart;\n\n GeoChart.prototype.__processData = function __processData () {\n return processSimple(this);\n };\n\n GeoChart.prototype.__chartName = function __chartName () {\n return \"GeoChart\";\n };\n\n return GeoChart;\n }(Chart));\n\n var ScatterChart = /*@__PURE__*/(function (Chart) {\n function ScatterChart () {\n Chart.apply(this, arguments);\n }\n\n if ( Chart ) ScatterChart.__proto__ = Chart;\n ScatterChart.prototype = Object.create( Chart && Chart.prototype );\n ScatterChart.prototype.constructor = ScatterChart;\n\n ScatterChart.prototype.__processData = function __processData () {\n return processSeries(this, \"number\");\n };\n\n ScatterChart.prototype.__chartName = function __chartName () {\n return \"ScatterChart\";\n };\n\n return ScatterChart;\n }(Chart));\n\n var BubbleChart = /*@__PURE__*/(function (Chart) {\n function BubbleChart () {\n Chart.apply(this, arguments);\n }\n\n if ( Chart ) BubbleChart.__proto__ = Chart;\n BubbleChart.prototype = Object.create( Chart && Chart.prototype );\n BubbleChart.prototype.constructor = BubbleChart;\n\n BubbleChart.prototype.__processData = function __processData () {\n return processSeries(this, \"bubble\");\n };\n\n BubbleChart.prototype.__chartName = function __chartName () {\n return \"BubbleChart\";\n };\n\n return BubbleChart;\n }(Chart));\n\n var Timeline = /*@__PURE__*/(function (Chart) {\n function Timeline () {\n Chart.apply(this, arguments);\n }\n\n if ( Chart ) Timeline.__proto__ = Chart;\n Timeline.prototype = Object.create( Chart && Chart.prototype );\n Timeline.prototype.constructor = Timeline;\n\n Timeline.prototype.__processData = function __processData () {\n var i, data = this.rawData;\n for (i = 0; i < data.length; i++) {\n data[i][1] = toDate(data[i][1]);\n data[i][2] = toDate(data[i][2]);\n }\n return data;\n };\n\n Timeline.prototype.__chartName = function __chartName () {\n return \"Timeline\";\n };\n\n return Timeline;\n }(Chart));\n\n var Chartkick = {\n LineChart: LineChart,\n PieChart: PieChart,\n ColumnChart: ColumnChart,\n BarChart: BarChart,\n AreaChart: AreaChart,\n GeoChart: GeoChart,\n ScatterChart: ScatterChart,\n BubbleChart: BubbleChart,\n Timeline: Timeline,\n charts: {},\n configure: function (options) {\n for (var key in options) {\n if (options.hasOwnProperty(key)) {\n config[key] = options[key];\n }\n }\n },\n setDefaultOptions: function (opts) {\n Chartkick.options = opts;\n },\n eachChart: function (callback) {\n for (var chartId in Chartkick.charts) {\n if (Chartkick.charts.hasOwnProperty(chartId)) {\n callback(Chartkick.charts[chartId]);\n }\n }\n },\n destroyAll: function() {\n for (var chartId in Chartkick.charts) {\n if (Chartkick.charts.hasOwnProperty(chartId)) {\n Chartkick.charts[chartId].destroy();\n delete Chartkick.charts[chartId];\n }\n }\n },\n config: config,\n options: {},\n adapters: adapters,\n addAdapter: addAdapter,\n use: function(adapter) {\n addAdapter(adapter);\n return Chartkick;\n }\n };\n\n // not ideal, but allows for simpler integration\n if (typeof window !== \"undefined\" && !window.Chartkick) {\n window.Chartkick = Chartkick;\n\n // clean up previous charts before Turbolinks loads new page\n document.addEventListener(\"turbolinks:before-render\", function() {\n if (config.autoDestroy !== false) {\n Chartkick.destroyAll();\n }\n });\n document.addEventListener(\"turbo:before-render\", function() {\n if (config.autoDestroy !== false) {\n Chartkick.destroyAll();\n }\n });\n\n // use setTimeout so charting library can come later in same JS file\n setTimeout(function() {\n window.dispatchEvent(new Event(\"chartkick:load\"));\n }, 0);\n }\n\n // backwards compatibility for esm require\n Chartkick.default = Chartkick;\n\n return Chartkick;\n\n}));\n", "/*\n * Copyright (C) 2008 Apple Inc. All Rights Reserved.\n *\n * Redistribution and use in source and binary forms, with or without\n * modification, are permitted provided that the following conditions\n * are met:\n * 1. Redistributions of source code must retain the above copyright\n * notice, this list of conditions and the following disclaimer.\n * 2. Redistributions in binary form must reproduce the above copyright\n * notice, this list of conditions and the following disclaimer in the\n * documentation and/or other materials provided with the distribution.\n *\n * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY\n * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\n * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR\n * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR\n * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,\n * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,\n * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR\n * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY\n * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\n * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n *\n * Ported from Webkit\n * http://svn.webkit.org/repository/webkit/trunk/Source/WebCore/platform/graphics/UnitBezier.h\n */\n\nmodule.exports = UnitBezier;\n\nfunction UnitBezier(p1x, p1y, p2x, p2y) {\n // Calculate the polynomial coefficients, implicit first and last control points are (0,0) and (1,1).\n this.cx = 3.0 * p1x;\n this.bx = 3.0 * (p2x - p1x) - this.cx;\n this.ax = 1.0 - this.cx - this.bx;\n\n this.cy = 3.0 * p1y;\n this.by = 3.0 * (p2y - p1y) - this.cy;\n this.ay = 1.0 - this.cy - this.by;\n\n this.p1x = p1x;\n this.p1y = p2y;\n this.p2x = p2x;\n this.p2y = p2y;\n}\n\nUnitBezier.prototype.sampleCurveX = function(t) {\n // `ax t^3 + bx t^2 + cx t' expanded using Horner's rule.\n return ((this.ax * t + this.bx) * t + this.cx) * t;\n};\n\nUnitBezier.prototype.sampleCurveY = function(t) {\n return ((this.ay * t + this.by) * t + this.cy) * t;\n};\n\nUnitBezier.prototype.sampleCurveDerivativeX = function(t) {\n return (3.0 * this.ax * t + 2.0 * this.bx) * t + this.cx;\n};\n\nUnitBezier.prototype.solveCurveX = function(x, epsilon) {\n if (typeof epsilon === 'undefined') epsilon = 1e-6;\n\n var t0, t1, t2, x2, i;\n\n // First try a few iterations of Newton's method -- normally very fast.\n for (t2 = x, i = 0; i < 8; i++) {\n\n x2 = this.sampleCurveX(t2) - x;\n if (Math.abs(x2) < epsilon) return t2;\n\n var d2 = this.sampleCurveDerivativeX(t2);\n if (Math.abs(d2) < 1e-6) break;\n\n t2 = t2 - x2 / d2;\n }\n\n // Fall back to the bisection method for reliability.\n t0 = 0.0;\n t1 = 1.0;\n t2 = x;\n\n if (t2 < t0) return t0;\n if (t2 > t1) return t1;\n\n while (t0 < t1) {\n\n x2 = this.sampleCurveX(t2);\n if (Math.abs(x2 - x) < epsilon) return t2;\n\n if (x > x2) {\n t0 = t2;\n } else {\n t1 = t2;\n }\n\n t2 = (t1 - t0) * 0.5 + t0;\n }\n\n // Failure.\n return t2;\n};\n\nUnitBezier.prototype.solve = function(x, epsilon) {\n return this.sampleCurveY(this.solveCurveX(x, epsilon));\n};\n", "'use strict';\n\nmodule.exports = Point;\n\n/**\n * A standalone point geometry with useful accessor, comparison, and\n * modification methods.\n *\n * @class Point\n * @param {Number} x the x-coordinate. this could be longitude or screen\n * pixels, or any other sort of unit.\n * @param {Number} y the y-coordinate. this could be latitude or screen\n * pixels, or any other sort of unit.\n * @example\n * var point = new Point(-77, 38);\n */\nfunction Point(x, y) {\n this.x = x;\n this.y = y;\n}\n\nPoint.prototype = {\n\n /**\n * Clone this point, returning a new point that can be modified\n * without affecting the old one.\n * @return {Point} the clone\n */\n clone: function() { return new Point(this.x, this.y); },\n\n /**\n * Add this point's x & y coordinates to another point,\n * yielding a new point.\n * @param {Point} p the other point\n * @return {Point} output point\n */\n add: function(p) { return this.clone()._add(p); },\n\n /**\n * Subtract this point's x & y coordinates to from point,\n * yielding a new point.\n * @param {Point} p the other point\n * @return {Point} output point\n */\n sub: function(p) { return this.clone()._sub(p); },\n\n /**\n * Multiply this point's x & y coordinates by point,\n * yielding a new point.\n * @param {Point} p the other point\n * @return {Point} output point\n */\n multByPoint: function(p) { return this.clone()._multByPoint(p); },\n\n /**\n * Divide this point's x & y coordinates by point,\n * yielding a new point.\n * @param {Point} p the other point\n * @return {Point} output point\n */\n divByPoint: function(p) { return this.clone()._divByPoint(p); },\n\n /**\n * Multiply this point's x & y coordinates by a factor,\n * yielding a new point.\n * @param {Point} k factor\n * @return {Point} output point\n */\n mult: function(k) { return this.clone()._mult(k); },\n\n /**\n * Divide this point's x & y coordinates by a factor,\n * yielding a new point.\n * @param {Point} k factor\n * @return {Point} output point\n */\n div: function(k) { return this.clone()._div(k); },\n\n /**\n * Rotate this point around the 0, 0 origin by an angle a,\n * given in radians\n * @param {Number} a angle to rotate around, in radians\n * @return {Point} output point\n */\n rotate: function(a) { return this.clone()._rotate(a); },\n\n /**\n * Rotate this point around p point by an angle a,\n * given in radians\n * @param {Number} a angle to rotate around, in radians\n * @param {Point} p Point to rotate around\n * @return {Point} output point\n */\n rotateAround: function(a,p) { return this.clone()._rotateAround(a,p); },\n\n /**\n * Multiply this point by a 4x1 transformation matrix\n * @param {Array} m transformation matrix\n * @return {Point} output point\n */\n matMult: function(m) { return this.clone()._matMult(m); },\n\n /**\n * Calculate this point but as a unit vector from 0, 0, meaning\n * that the distance from the resulting point to the 0, 0\n * coordinate will be equal to 1 and the angle from the resulting\n * point to the 0, 0 coordinate will be the same as before.\n * @return {Point} unit vector point\n */\n unit: function() { return this.clone()._unit(); },\n\n /**\n * Compute a perpendicular point, where the new y coordinate\n * is the old x coordinate and the new x coordinate is the old y\n * coordinate multiplied by -1\n * @return {Point} perpendicular point\n */\n perp: function() { return this.clone()._perp(); },\n\n /**\n * Return a version of this point with the x & y coordinates\n * rounded to integers.\n * @return {Point} rounded point\n */\n round: function() { return this.clone()._round(); },\n\n /**\n * Return the magitude of this point: this is the Euclidean\n * distance from the 0, 0 coordinate to this point's x and y\n * coordinates.\n * @return {Number} magnitude\n */\n mag: function() {\n return Math.sqrt(this.x * this.x + this.y * this.y);\n },\n\n /**\n * Judge whether this point is equal to another point, returning\n * true or false.\n * @param {Point} other the other point\n * @return {boolean} whether the points are equal\n */\n equals: function(other) {\n return this.x === other.x &&\n this.y === other.y;\n },\n\n /**\n * Calculate the distance from this point to another point\n * @param {Point} p the other point\n * @return {Number} distance\n */\n dist: function(p) {\n return Math.sqrt(this.distSqr(p));\n },\n\n /**\n * Calculate the distance from this point to another point,\n * without the square root step. Useful if you're comparing\n * relative distances.\n * @param {Point} p the other point\n * @return {Number} distance\n */\n distSqr: function(p) {\n var dx = p.x - this.x,\n dy = p.y - this.y;\n return dx * dx + dy * dy;\n },\n\n /**\n * Get the angle from the 0, 0 coordinate to this point, in radians\n * coordinates.\n * @return {Number} angle\n */\n angle: function() {\n return Math.atan2(this.y, this.x);\n },\n\n /**\n * Get the angle from this point to another point, in radians\n * @param {Point} b the other point\n * @return {Number} angle\n */\n angleTo: function(b) {\n return Math.atan2(this.y - b.y, this.x - b.x);\n },\n\n /**\n * Get the angle between this point and another point, in radians\n * @param {Point} b the other point\n * @return {Number} angle\n */\n angleWith: function(b) {\n return this.angleWithSep(b.x, b.y);\n },\n\n /*\n * Find the angle of the two vectors, solving the formula for\n * the cross product a x b = |a||b|sin(θ) for θ.\n * @param {Number} x the x-coordinate\n * @param {Number} y the y-coordinate\n * @return {Number} the angle in radians\n */\n angleWithSep: function(x, y) {\n return Math.atan2(\n this.x * y - this.y * x,\n this.x * x + this.y * y);\n },\n\n _matMult: function(m) {\n var x = m[0] * this.x + m[1] * this.y,\n y = m[2] * this.x + m[3] * this.y;\n this.x = x;\n this.y = y;\n return this;\n },\n\n _add: function(p) {\n this.x += p.x;\n this.y += p.y;\n return this;\n },\n\n _sub: function(p) {\n this.x -= p.x;\n this.y -= p.y;\n return this;\n },\n\n _mult: function(k) {\n this.x *= k;\n this.y *= k;\n return this;\n },\n\n _div: function(k) {\n this.x /= k;\n this.y /= k;\n return this;\n },\n\n _multByPoint: function(p) {\n this.x *= p.x;\n this.y *= p.y;\n return this;\n },\n\n _divByPoint: function(p) {\n this.x /= p.x;\n this.y /= p.y;\n return this;\n },\n\n _unit: function() {\n this._div(this.mag());\n return this;\n },\n\n _perp: function() {\n var y = this.y;\n this.y = this.x;\n this.x = -y;\n return this;\n },\n\n _rotate: function(angle) {\n var cos = Math.cos(angle),\n sin = Math.sin(angle),\n x = cos * this.x - sin * this.y,\n y = sin * this.x + cos * this.y;\n this.x = x;\n this.y = y;\n return this;\n },\n\n _rotateAround: function(angle, p) {\n var cos = Math.cos(angle),\n sin = Math.sin(angle),\n x = p.x + cos * (this.x - p.x) - sin * (this.y - p.y),\n y = p.y + sin * (this.x - p.x) + cos * (this.y - p.y);\n this.x = x;\n this.y = y;\n return this;\n },\n\n _round: function() {\n this.x = Math.round(this.x);\n this.y = Math.round(this.y);\n return this;\n }\n};\n\n/**\n * Construct a point from an array if necessary, otherwise if the input\n * is already a Point, or an unknown type, return it unchanged\n * @param {Array|Point|*} a any kind of input value\n * @return {Point} constructed point, or passed-through value.\n * @example\n * // this\n * var point = Point.convert([0, 1]);\n * // is equivalent to\n * var point = new Point(0, 1);\n */\nPoint.convert = function (a) {\n if (a instanceof Point) {\n return a;\n }\n if (Array.isArray(a)) {\n return new Point(a[0], a[1]);\n }\n return a;\n};\n", "// @flow\n/* eslint-env browser */\nimport type {Window} from '../../types/window';\n\n// shim window for the case of requiring the browser bundle in Node\nexport default typeof self !== 'undefined' ? (self: Window) : (({}: any): Window);\n", "// @flow\n\nimport UnitBezier from '@mapbox/unitbezier';\n\nimport Point from '@mapbox/point-geometry';\nimport window from './window';\n\nimport type {Callback} from '../types/callback';\n\n// Number.MAX_SAFE_INTEGER not available in IE\nexport const MAX_SAFE_INTEGER = Math.pow(2, 53) - 1;\n\n/**\n * @module util\n * @private\n */\n\n/**\n * Given a value `t` that varies between 0 and 1, return\n * an interpolation function that eases between 0 and 1 in a pleasing\n * cubic in-out fashion.\n *\n * @private\n */\nexport function easeCubicInOut(t: number): number {\n if (t <= 0) return 0;\n if (t >= 1) return 1;\n const t2 = t * t,\n t3 = t2 * t;\n return 4 * (t < 0.5 ? t3 : 3 * (t - t2) + t3 - 0.75);\n}\n\n/**\n * Given given (x, y), (x1, y1) control points for a bezier curve,\n * return a function that interpolates along that curve.\n *\n * @param p1x control point 1 x coordinate\n * @param p1y control point 1 y coordinate\n * @param p2x control point 2 x coordinate\n * @param p2y control point 2 y coordinate\n * @private\n */\nexport function bezier(p1x: number, p1y: number, p2x: number, p2y: number): (t: number) => number {\n const bezier = new UnitBezier(p1x, p1y, p2x, p2y);\n return function(t: number) {\n return bezier.solve(t);\n };\n}\n\n/**\n * A default bezier-curve powered easing function with\n * control points (0.25, 0.1) and (0.25, 1)\n *\n * @private\n */\nexport const ease = bezier(0.25, 0.1, 0.25, 1);\n\n/**\n * constrain n to the given range via min + max\n *\n * @param n value\n * @param min the minimum value to be returned\n * @param max the maximum value to be returned\n * @returns the clamped value\n * @private\n */\nexport function clamp(n: number, min: number, max: number): number {\n return Math.min(max, Math.max(min, n));\n}\n\n/**\n * constrain n to the given range, excluding the minimum, via modular arithmetic\n *\n * @param n value\n * @param min the minimum value to be returned, exclusive\n * @param max the maximum value to be returned, inclusive\n * @returns constrained number\n * @private\n */\nexport function wrap(n: number, min: number, max: number): number {\n const d = max - min;\n const w = ((n - min) % d + d) % d + min;\n return (w === min) ? max : w;\n}\n\n/*\n * Call an asynchronous function on an array of arguments,\n * calling `callback` with the completed results of all calls.\n *\n * @param array input to each call of the async function.\n * @param fn an async function with signature (data, callback)\n * @param callback a callback run after all async work is done.\n * called with an array, containing the results of each async call.\n * @private\n */\nexport function asyncAll(\n array: Array,\n fn: (item: Item, fnCallback: Callback) => void,\n callback: Callback>\n) {\n if (!array.length) { return callback(null, []); }\n let remaining = array.length;\n const results = new Array(array.length);\n let error = null;\n array.forEach((item, i) => {\n fn(item, (err, result) => {\n if (err) error = err;\n results[i] = ((result: any): Result); // https://github.com/facebook/flow/issues/2123\n if (--remaining === 0) callback(error, results);\n });\n });\n}\n\n/*\n * Polyfill for Object.values. Not fully spec compliant, but we don't\n * need it to be.\n *\n * @private\n */\nexport function values(obj: {[key: string]: T}): Array {\n const result = [];\n for (const k in obj) {\n result.push(obj[k]);\n }\n return result;\n}\n\n/*\n * Compute the difference between the keys in one object and the keys\n * in another object.\n *\n * @returns keys difference\n * @private\n */\nexport function keysDifference(obj: {[key: string]: S}, other: {[key: string]: T}): Array {\n const difference = [];\n for (const i in obj) {\n if (!(i in other)) {\n difference.push(i);\n }\n }\n return difference;\n}\n\n/**\n * Given a destination object and optionally many source objects,\n * copy all properties from the source objects into the destination.\n * The last source object given overrides properties from previous\n * source objects.\n *\n * @param dest destination object\n * @param sources sources from which properties are pulled\n * @private\n */\nexport function extend(dest: Object, ...sources: Array): Object {\n for (const src of sources) {\n for (const k in src) {\n dest[k] = src[k];\n }\n }\n return dest;\n}\n\n/**\n * Given an object and a number of properties as strings, return version\n * of that object with only those properties.\n *\n * @param src the object\n * @param properties an array of property names chosen\n * to appear on the resulting object.\n * @returns object with limited properties.\n * @example\n * var foo = { name: 'Charlie', age: 10 };\n * var justName = pick(foo, ['name']);\n * // justName = { name: 'Charlie' }\n * @private\n */\nexport function pick(src: Object, properties: Array): Object {\n const result = {};\n for (let i = 0; i < properties.length; i++) {\n const k = properties[i];\n if (k in src) {\n result[k] = src[k];\n }\n }\n return result;\n}\n\nlet id = 1;\n\n/**\n * Return a unique numeric id, starting at 1 and incrementing with\n * each call.\n *\n * @returns unique numeric id.\n * @private\n */\nexport function uniqueId(): number {\n return id++;\n}\n\n/**\n * Return a random UUID (v4). Taken from: https://gist.github.com/jed/982883\n * @private\n */\nexport function uuid(): string {\n function b(a) {\n return a ? (a ^ Math.random() * 16 >> a / 4).toString(16) :\n //$FlowFixMe: Flow doesn't like the implied array literal conversion here\n ([1e7] + -[1e3] + -4e3 + -8e3 + -1e11).replace(/[018]/g, b);\n }\n return b();\n}\n\n/**\n * Return whether a given value is a power of two\n * @private\n */\nexport function isPowerOfTwo(value: number): boolean {\n return (Math.log(value) / Math.LN2) % 1 === 0;\n}\n\n/**\n * Return the next power of two, or the input value if already a power of two\n * @private\n */\nexport function nextPowerOfTwo(value: number): number {\n if (value <= 1) return 1;\n return Math.pow(2, Math.ceil(Math.log(value) / Math.LN2));\n}\n\n/**\n * Validate a string to match UUID(v4) of the\n * form: xxxxxxxx-xxxx-4xxx-[89ab]xxx-xxxxxxxxxxxx\n * @param str string to validate.\n * @private\n */\nexport function validateUuid(str: ?string): boolean {\n return str ? /^[0-9a-f]{8}-[0-9a-f]{4}-[4][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i.test(str) : false;\n}\n\n/**\n * Given an array of member function names as strings, replace all of them\n * with bound versions that will always refer to `context` as `this`. This\n * is useful for classes where otherwise event bindings would reassign\n * `this` to the evented object or some other value: this lets you ensure\n * the `this` value always.\n *\n * @param fns list of member function names\n * @param context the context value\n * @example\n * function MyClass() {\n * bindAll(['ontimer'], this);\n * this.name = 'Tom';\n * }\n * MyClass.prototype.ontimer = function() {\n * alert(this.name);\n * };\n * var myClass = new MyClass();\n * setTimeout(myClass.ontimer, 100);\n * @private\n */\nexport function bindAll(fns: Array, context: Object): void {\n fns.forEach((fn) => {\n if (!context[fn]) { return; }\n context[fn] = context[fn].bind(context);\n });\n}\n\n/**\n * Determine if a string ends with a particular substring\n *\n * @private\n */\nexport function endsWith(string: string, suffix: string): boolean {\n return string.indexOf(suffix, string.length - suffix.length) !== -1;\n}\n\n/**\n * Create an object by mapping all the values of an existing object while\n * preserving their keys.\n *\n * @private\n */\nexport function mapObject(input: Object, iterator: Function, context?: Object): Object {\n const output = {};\n for (const key in input) {\n output[key] = iterator.call(context || this, input[key], key, input);\n }\n return output;\n}\n\n/**\n * Create an object by filtering out values of an existing object.\n *\n * @private\n */\nexport function filterObject(input: Object, iterator: Function, context?: Object): Object {\n const output = {};\n for (const key in input) {\n if (iterator.call(context || this, input[key], key, input)) {\n output[key] = input[key];\n }\n }\n return output;\n}\n\nimport deepEqual from '../style-spec/util/deep_equal';\nexport {deepEqual};\n\n/**\n * Deeply clones two objects.\n *\n * @private\n */\nexport function clone(input: T): T {\n if (Array.isArray(input)) {\n return input.map(clone);\n } else if (typeof input === 'object' && input) {\n return ((mapObject(input, clone): any): T);\n } else {\n return input;\n }\n}\n\n/**\n * Check if two arrays have at least one common element.\n *\n * @private\n */\nexport function arraysIntersect(a: Array, b: Array): boolean {\n for (let l = 0; l < a.length; l++) {\n if (b.indexOf(a[l]) >= 0) return true;\n }\n return false;\n}\n\n/**\n * Print a warning message to the console and ensure duplicate warning messages\n * are not printed.\n *\n * @private\n */\nconst warnOnceHistory: {[key: string]: boolean} = {};\n\nexport function warnOnce(message: string): void {\n if (!warnOnceHistory[message]) {\n // console isn't defined in some WebWorkers, see #2558\n if (typeof console !== \"undefined\") console.warn(message);\n warnOnceHistory[message] = true;\n }\n}\n\n/**\n * Indicates if the provided Points are in a counter clockwise (true) or clockwise (false) order\n *\n * @private\n * @returns true for a counter clockwise set of points\n */\n// http://bryceboe.com/2006/10/23/line-segment-intersection-algorithm/\nexport function isCounterClockwise(a: Point, b: Point, c: Point): boolean {\n return (c.y - a.y) * (b.x - a.x) > (b.y - a.y) * (c.x - a.x);\n}\n\n/**\n * Returns the signed area for the polygon ring. Postive areas are exterior rings and\n * have a clockwise winding. Negative areas are interior rings and have a counter clockwise\n * ordering.\n *\n * @private\n * @param ring Exterior or interior ring\n */\nexport function calculateSignedArea(ring: Array): number {\n let sum = 0;\n for (let i = 0, len = ring.length, j = len - 1, p1, p2; i < len; j = i++) {\n p1 = ring[i];\n p2 = ring[j];\n sum += (p2.x - p1.x) * (p1.y + p2.y);\n }\n return sum;\n}\n\n/**\n * Detects closed polygons, first + last point are equal\n *\n * @private\n * @param points array of points\n * @return true if the points are a closed polygon\n */\nexport function isClosedPolygon(points: Array): boolean {\n // If it is 2 points that are the same then it is a point\n // If it is 3 points with start and end the same then it is a line\n if (points.length < 4)\n return false;\n\n const p1 = points[0];\n const p2 = points[points.length - 1];\n\n if (Math.abs(p1.x - p2.x) > 0 ||\n Math.abs(p1.y - p2.y) > 0) {\n return false;\n }\n\n // polygon simplification can produce polygons with zero area and more than 3 points\n return Math.abs(calculateSignedArea(points)) > 0.01;\n}\n\n/**\n * Converts spherical coordinates to cartesian coordinates.\n *\n * @private\n * @param spherical Spherical coordinates, in [radial, azimuthal, polar]\n * @return cartesian coordinates in [x, y, z]\n */\n\nexport function sphericalToCartesian([r, azimuthal, polar]: [number, number, number]): {x: number, y: number, z: number} {\n // We abstract \"north\"/\"up\" (compass-wise) to be 0° when really this is 90° (π/2):\n // correct for that here\n azimuthal += 90;\n\n // Convert azimuthal and polar angles to radians\n azimuthal *= Math.PI / 180;\n polar *= Math.PI / 180;\n\n return {\n x: r * Math.cos(azimuthal) * Math.sin(polar),\n y: r * Math.sin(azimuthal) * Math.sin(polar),\n z: r * Math.cos(polar)\n };\n}\n\n/* global self, WorkerGlobalScope */\n/**\n * Retuns true if the when run in the web-worker context.\n *\n * @private\n * @returns {boolean}\n */\nexport function isWorker(): boolean {\n return typeof WorkerGlobalScope !== 'undefined' && typeof self !== 'undefined' &&\n self instanceof WorkerGlobalScope;\n}\n\n/**\n * Parses data from 'Cache-Control' headers.\n *\n * @private\n * @param cacheControl Value of 'Cache-Control' header\n * @return object containing parsed header info.\n */\n\nexport function parseCacheControl(cacheControl: string): Object {\n // Taken from [Wreck](https://github.com/hapijs/wreck)\n const re = /(?:^|(?:\\s*\\,\\s*))([^\\x00-\\x20\\(\\)<>@\\,;\\:\\\\\"\\/\\[\\]\\?\\=\\{\\}\\x7F]+)(?:\\=(?:([^\\x00-\\x20\\(\\)<>@\\,;\\:\\\\\"\\/\\[\\]\\?\\=\\{\\}\\x7F]+)|(?:\\\"((?:[^\"\\\\]|\\\\.)*)\\\")))?/g;\n\n const header = {};\n cacheControl.replace(re, ($0, $1, $2, $3) => {\n const value = $2 || $3;\n header[$1] = value ? value.toLowerCase() : true;\n return '';\n });\n\n if (header['max-age']) {\n const maxAge = parseInt(header['max-age'], 10);\n if (isNaN(maxAge)) delete header['max-age'];\n else header['max-age'] = maxAge;\n }\n\n return header;\n}\n\nlet _isSafari = null;\n\n/**\n * Returns true when run in WebKit derived browsers.\n * This is used as a workaround for a memory leak in Safari caused by using Transferable objects to\n * transfer data between WebWorkers and the main thread.\n * https://github.com/mapbox/mapbox-gl-js/issues/8771\n *\n * This should be removed once the underlying Safari issue is fixed.\n *\n * @private\n * @param scope {WindowOrWorkerGlobalScope} Since this function is used both on the main thread and WebWorker context,\n * let the calling scope pass in the global scope object.\n * @returns {boolean}\n */\nexport function isSafari(scope: any): boolean {\n if (_isSafari == null) {\n const userAgent = scope.navigator ? scope.navigator.userAgent : null;\n _isSafari = !!scope.safari ||\n !!(userAgent && (/\\b(iPad|iPhone|iPod)\\b/.test(userAgent) || (!!userAgent.match('Safari') && !userAgent.match('Chrome'))));\n }\n return _isSafari;\n}\n\nexport function storageAvailable(type: string): boolean {\n try {\n const storage = window[type];\n storage.setItem('_mapbox_test_', 1);\n storage.removeItem('_mapbox_test_');\n return true;\n } catch (e) {\n return false;\n }\n}\n\n// The following methods are from https://developer.mozilla.org/en-US/docs/Web/API/WindowBase64/Base64_encoding_and_decoding#The_Unicode_Problem\n//Unicode compliant base64 encoder for strings\nexport function b64EncodeUnicode(str: string) {\n return window.btoa(\n encodeURIComponent(str).replace(/%([0-9A-F]{2})/g,\n (match, p1) => {\n return String.fromCharCode(Number('0x' + p1)); //eslint-disable-line\n }\n )\n );\n}\n\n// Unicode compliant decoder for base64-encoded strings\nexport function b64DecodeUnicode(str: string) {\n return decodeURIComponent(window.atob(str).split('').map((c) => {\n return '%' + ('00' + c.charCodeAt(0).toString(16)).slice(-2); //eslint-disable-line\n }).join(''));\n}\n", "// @flow strict\n\nimport window from './window';\nimport type {Cancelable} from '../types/cancelable';\n\nconst now = window.performance && window.performance.now ?\n window.performance.now.bind(window.performance) :\n Date.now.bind(Date);\n\nconst raf = window.requestAnimationFrame ||\n window.mozRequestAnimationFrame ||\n window.webkitRequestAnimationFrame ||\n window.msRequestAnimationFrame;\n\nconst cancel = window.cancelAnimationFrame ||\n window.mozCancelAnimationFrame ||\n window.webkitCancelAnimationFrame ||\n window.msCancelAnimationFrame;\n\nlet linkEl;\n\nlet reducedMotionQuery: MediaQueryList;\n\n/**\n * @private\n */\nconst exported = {\n /**\n * Provides a function that outputs milliseconds: either performance.now()\n * or a fallback to Date.now()\n */\n now,\n\n frame(fn: (paintStartTimestamp: number) => void): Cancelable {\n const frame = raf(fn);\n return {cancel: () => cancel(frame)};\n },\n\n getImageData(img: CanvasImageSource, padding?: number = 0): ImageData {\n const canvas = window.document.createElement('canvas');\n const context = canvas.getContext('2d');\n if (!context) {\n throw new Error('failed to create canvas 2d context');\n }\n canvas.width = img.width;\n canvas.height = img.height;\n context.drawImage(img, 0, 0, img.width, img.height);\n return context.getImageData(-padding, -padding, img.width + 2 * padding, img.height + 2 * padding);\n },\n\n resolveURL(path: string) {\n if (!linkEl) linkEl = window.document.createElement('a');\n linkEl.href = path;\n return linkEl.href;\n },\n\n hardwareConcurrency: window.navigator && window.navigator.hardwareConcurrency || 4,\n\n get devicePixelRatio() { return window.devicePixelRatio; },\n get prefersReducedMotion(): boolean {\n if (!window.matchMedia) return false;\n //Lazily initialize media query\n if (reducedMotionQuery == null) {\n reducedMotionQuery = window.matchMedia('(prefers-reduced-motion: reduce)');\n }\n return reducedMotionQuery.matches;\n },\n};\n\nexport default exported;\n", "// @flow strict\n\nimport window from './window';\n\nconst exported = {\n supported: false,\n testSupport\n};\n\nexport default exported;\n\nlet glForTesting;\nlet webpCheckComplete = false;\nlet webpImgTest;\nlet webpImgTestOnloadComplete = false;\n\nif (window.document) {\n webpImgTest = window.document.createElement('img');\n webpImgTest.onload = function() {\n if (glForTesting) testWebpTextureUpload(glForTesting);\n glForTesting = null;\n webpImgTestOnloadComplete = true;\n };\n webpImgTest.onerror = function() {\n webpCheckComplete = true;\n glForTesting = null;\n };\n webpImgTest.src = 'data:image/webp;base64,UklGRh4AAABXRUJQVlA4TBEAAAAvAQAAAAfQ//73v/+BiOh/AAA=';\n}\n\nfunction testSupport(gl: WebGLRenderingContext) {\n if (webpCheckComplete || !webpImgTest) return;\n\n // HTMLImageElement.complete is set when an image is done loading it's source\n // regardless of whether the load was successful or not.\n // It's possible for an error to set HTMLImageElement.complete to true which would trigger\n // testWebpTextureUpload and mistakenly set exported.supported to true in browsers which don't support webp\n // To avoid this, we set a flag in the image's onload handler and only call testWebpTextureUpload\n // after a successful image load event.\n if (webpImgTestOnloadComplete) {\n testWebpTextureUpload(gl);\n } else {\n glForTesting = gl;\n\n }\n}\n\nfunction testWebpTextureUpload(gl: WebGLRenderingContext) {\n // Edge 18 supports WebP but not uploading a WebP image to a gl texture\n // Test support for this before allowing WebP images.\n // https://github.com/mapbox/mapbox-gl-js/issues/7671\n const texture = gl.createTexture();\n gl.bindTexture(gl.TEXTURE_2D, texture);\n\n try {\n gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, webpImgTest);\n\n // The error does not get triggered in Edge if the context is lost\n if (gl.isContextLost()) return;\n\n exported.supported = true;\n } catch (e) {\n // Catch \"Unspecified Error.\" in Edge 18.\n }\n\n gl.deleteTexture(texture);\n\n webpCheckComplete = true;\n}\n", "// @flow strict\n\ntype Config = {|\n API_URL: string,\n EVENTS_URL: ?string,\n FEEDBACK_URL: string,\n REQUIRE_ACCESS_TOKEN: boolean,\n ACCESS_TOKEN: ?string,\n MAX_PARALLEL_IMAGE_REQUESTS: number\n|};\n\nconst config: Config = {\n API_URL: 'https://api.mapbox.com',\n get EVENTS_URL() {\n if (!this.API_URL) { return null; }\n if (this.API_URL.indexOf('https://api.mapbox.cn') === 0) {\n return 'https://events.mapbox.cn/events/v2';\n } else if (this.API_URL.indexOf('https://api.mapbox.com') === 0) {\n return 'https://events.mapbox.com/events/v2';\n } else {\n return null;\n }\n },\n FEEDBACK_URL: 'https://apps.mapbox.com/feedback',\n REQUIRE_ACCESS_TOKEN: true,\n ACCESS_TOKEN: null,\n MAX_PARALLEL_IMAGE_REQUESTS: 16\n};\n\nexport default config;\n", "// @flow\n\n/***** START WARNING - IF YOU USE THIS CODE WITH MAPBOX MAPPING APIS, REMOVAL OR\n* MODIFICATION OF THE FOLLOWING CODE VIOLATES THE MAPBOX TERMS OF SERVICE ******\n* The following code is used to access Mapbox's Mapping APIs. Removal or modification\n* of this code when used with Mapbox's Mapping APIs can result in higher fees and/or\n* termination of your account with Mapbox.\n*\n* Under the Mapbox Terms of Service, you may not use this code to access Mapbox\n* Mapping APIs other than through Mapbox SDKs.\n*\n* The Mapping APIs documentation is available at https://docs.mapbox.com/api/maps/#maps\n* and the Mapbox Terms of Service are available at https://www.mapbox.com/tos/\n******************************************************************************/\n\ntype SkuTokenObject = {|\n token: string,\n tokenExpiresAt: number\n|};\n\nconst SKU_ID = '01';\n\nfunction createSkuToken(): SkuTokenObject {\n // SKU_ID and TOKEN_VERSION are specified by an internal schema and should not change\n const TOKEN_VERSION = '1';\n const base62chars = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';\n // sessionRandomizer is a randomized 10-digit base-62 number\n let sessionRandomizer = '';\n for (let i = 0; i < 10; i++) {\n sessionRandomizer += base62chars[Math.floor(Math.random() * 62)];\n }\n const expiration = 12 * 60 * 60 * 1000; // 12 hours\n const token = [TOKEN_VERSION, SKU_ID, sessionRandomizer].join('');\n const tokenExpiresAt = Date.now() + expiration;\n\n return {token, tokenExpiresAt};\n}\n\nexport {createSkuToken, SKU_ID};\n\n/***** END WARNING - REMOVAL OR MODIFICATION OF THE\nPRECEDING CODE VIOLATES THE MAPBOX TERMS OF SERVICE ******/\n", "// @flow\n\n/***** START WARNING - IF YOU USE THIS CODE WITH MAPBOX MAPPING APIS, REMOVAL OR\n* MODIFICATION OF THE FOLLOWING CODE VIOLATES THE MAPBOX TERMS OF SERVICE ******\n* The following code is used to access Mapbox's Mapping APIs. Removal or modification\n* of this code when used with Mapbox's Mapping APIs can result in higher fees and/or\n* termination of your account with Mapbox.\n*\n* Under the Mapbox Terms of Service, you may not use this code to access Mapbox\n* Mapping APIs other than through Mapbox SDKs.\n*\n* The Mapping APIs documentation is available at https://docs.mapbox.com/api/maps/#maps\n* and the Mapbox Terms of Service are available at https://www.mapbox.com/tos/\n******************************************************************************/\n\nimport config from './config';\n\nimport browser from './browser';\nimport window from './window';\nimport webpSupported from './webp_supported';\nimport {createSkuToken, SKU_ID} from './sku_token';\nimport {version as sdkVersion} from '../../package.json';\nimport {uuid, validateUuid, storageAvailable, b64DecodeUnicode, b64EncodeUnicode, warnOnce, extend} from './util';\nimport {postData, ResourceType} from './ajax';\n\nimport type {RequestParameters} from './ajax';\nimport type {Cancelable} from '../types/cancelable';\nimport type {TileJSON} from '../types/tilejson';\n\ntype ResourceTypeEnum = $Keys;\nexport type RequestTransformFunction = (url: string, resourceType?: ResourceTypeEnum) => RequestParameters;\n\ntype UrlObject = {|\n protocol: string,\n authority: string,\n path: string,\n params: Array\n|};\n\nexport class RequestManager {\n _skuToken: string;\n _skuTokenExpiresAt: number;\n _transformRequestFn: ?RequestTransformFunction;\n _customAccessToken: ?string;\n\n constructor(transformRequestFn?: RequestTransformFunction, customAccessToken?: string) {\n this._transformRequestFn = transformRequestFn;\n this._customAccessToken = customAccessToken;\n this._createSkuToken();\n }\n\n _createSkuToken() {\n const skuToken = createSkuToken();\n this._skuToken = skuToken.token;\n this._skuTokenExpiresAt = skuToken.tokenExpiresAt;\n }\n\n _isSkuTokenExpired(): boolean {\n return Date.now() > this._skuTokenExpiresAt;\n }\n\n transformRequest(url: string, type: ResourceTypeEnum) {\n if (this._transformRequestFn) {\n return this._transformRequestFn(url, type) || {url};\n }\n\n return {url};\n }\n\n normalizeStyleURL(url: string, accessToken?: string): string {\n if (!isMapboxURL(url)) return url;\n const urlObject = parseUrl(url);\n urlObject.path = `/styles/v1${urlObject.path}`;\n return this._makeAPIURL(urlObject, this._customAccessToken || accessToken);\n }\n\n normalizeGlyphsURL(url: string, accessToken?: string): string {\n if (!isMapboxURL(url)) return url;\n const urlObject = parseUrl(url);\n urlObject.path = `/fonts/v1${urlObject.path}`;\n return this._makeAPIURL(urlObject, this._customAccessToken || accessToken);\n }\n\n normalizeSourceURL(url: string, accessToken?: string): string {\n if (!isMapboxURL(url)) return url;\n const urlObject = parseUrl(url);\n urlObject.path = `/v4/${urlObject.authority}.json`;\n // TileJSON requests need a secure flag appended to their URLs so\n // that the server knows to send SSL-ified resource references.\n urlObject.params.push('secure');\n return this._makeAPIURL(urlObject, this._customAccessToken || accessToken);\n }\n\n normalizeSpriteURL(url: string, format: string, extension: string, accessToken?: string): string {\n const urlObject = parseUrl(url);\n if (!isMapboxURL(url)) {\n urlObject.path += `${format}${extension}`;\n return formatUrl(urlObject);\n }\n urlObject.path = `/styles/v1${urlObject.path}/sprite${format}${extension}`;\n return this._makeAPIURL(urlObject, this._customAccessToken || accessToken);\n }\n\n normalizeTileURL(tileURL: string, tileSize?: ?number): string {\n if (this._isSkuTokenExpired()) {\n this._createSkuToken();\n }\n\n if (tileURL && !isMapboxURL(tileURL)) return tileURL;\n\n const urlObject = parseUrl(tileURL);\n const imageExtensionRe = /(\\.(png|jpg)\\d*)(?=$)/;\n const tileURLAPIPrefixRe = /^.+\\/v4\\//;\n\n // The v4 mapbox tile API supports 512x512 image tiles only when @2x\n // is appended to the tile URL. If `tileSize: 512` is specified for\n // a Mapbox raster source force the @2x suffix even if a non hidpi device.\n const suffix = browser.devicePixelRatio >= 2 || tileSize === 512 ? '@2x' : '';\n const extension = webpSupported.supported ? '.webp' : '$1';\n urlObject.path = urlObject.path.replace(imageExtensionRe, `${suffix}${extension}`);\n urlObject.path = urlObject.path.replace(tileURLAPIPrefixRe, '/');\n urlObject.path = `/v4${urlObject.path}`;\n\n const accessToken = this._customAccessToken || getAccessToken(urlObject.params) || config.ACCESS_TOKEN;\n if (config.REQUIRE_ACCESS_TOKEN && accessToken && this._skuToken) {\n urlObject.params.push(`sku=${this._skuToken}`);\n }\n\n return this._makeAPIURL(urlObject, accessToken);\n }\n\n canonicalizeTileURL(url: string, removeAccessToken: boolean) {\n const version = \"/v4/\";\n // matches any file extension specified by a dot and one or more alphanumeric characters\n const extensionRe = /\\.[\\w]+$/;\n\n const urlObject = parseUrl(url);\n // Make sure that we are dealing with a valid Mapbox tile URL.\n // Has to begin with /v4/, with a valid filename + extension\n if (!urlObject.path.match(/(^\\/v4\\/)/) || !urlObject.path.match(extensionRe)) {\n // Not a proper Mapbox tile URL.\n return url;\n }\n // Reassemble the canonical URL from the parts we've parsed before.\n let result = \"mapbox://tiles/\";\n result += urlObject.path.replace(version, '');\n\n // Append the query string, minus the access token parameter.\n let params = urlObject.params;\n if (removeAccessToken) {\n params = params.filter(p => !p.match(/^access_token=/));\n }\n if (params.length) result += `?${params.join('&')}`;\n return result;\n }\n\n canonicalizeTileset(tileJSON: TileJSON, sourceURL?: string) {\n const removeAccessToken = sourceURL ? isMapboxURL(sourceURL) : false;\n const canonical = [];\n for (const url of tileJSON.tiles || []) {\n if (isMapboxHTTPURL(url)) {\n canonical.push(this.canonicalizeTileURL(url, removeAccessToken));\n } else {\n canonical.push(url);\n }\n }\n return canonical;\n }\n\n _makeAPIURL(urlObject: UrlObject, accessToken: string | null | void): string {\n const help = 'See https://www.mapbox.com/api-documentation/#access-tokens-and-token-scopes';\n const apiUrlObject = parseUrl(config.API_URL);\n urlObject.protocol = apiUrlObject.protocol;\n urlObject.authority = apiUrlObject.authority;\n\n if (urlObject.protocol === 'http') {\n const i = urlObject.params.indexOf('secure');\n if (i >= 0) urlObject.params.splice(i, 1);\n }\n\n if (apiUrlObject.path !== '/') {\n urlObject.path = `${apiUrlObject.path}${urlObject.path}`;\n }\n\n if (!config.REQUIRE_ACCESS_TOKEN) return formatUrl(urlObject);\n\n accessToken = accessToken || config.ACCESS_TOKEN;\n if (!accessToken)\n throw new Error(`An API access token is required to use Mapbox GL. ${help}`);\n if (accessToken[0] === 's')\n throw new Error(`Use a public access token (pk.*) with Mapbox GL, not a secret access token (sk.*). ${help}`);\n\n urlObject.params = urlObject.params.filter((d) => d.indexOf('access_token') === -1);\n urlObject.params.push(`access_token=${accessToken}`);\n return formatUrl(urlObject);\n }\n}\n\nfunction isMapboxURL(url: string) {\n return url.indexOf('mapbox:') === 0;\n}\n\nconst mapboxHTTPURLRe = /^((https?:)?\\/\\/)?([^\\/]+\\.)?mapbox\\.c(n|om)(\\/|\\?|$)/i;\nfunction isMapboxHTTPURL(url: string): boolean {\n return mapboxHTTPURLRe.test(url);\n}\n\nfunction hasCacheDefeatingSku(url: string) {\n return url.indexOf('sku=') > 0 && isMapboxHTTPURL(url);\n}\n\nfunction getAccessToken(params: Array): string | null {\n for (const param of params) {\n const match = param.match(/^access_token=(.*)$/);\n if (match) {\n return match[1];\n }\n }\n return null;\n}\n\nconst urlRe = /^(\\w+):\\/\\/([^/?]*)(\\/[^?]+)?\\??(.+)?/;\n\nfunction parseUrl(url: string): UrlObject {\n const parts = url.match(urlRe);\n if (!parts) {\n throw new Error('Unable to parse URL object');\n }\n return {\n protocol: parts[1],\n authority: parts[2],\n path: parts[3] || '/',\n params: parts[4] ? parts[4].split('&') : []\n };\n}\n\nfunction formatUrl(obj: UrlObject): string {\n const params = obj.params.length ? `?${obj.params.join('&')}` : '';\n return `${obj.protocol}://${obj.authority}${obj.path}${params}`;\n}\n\nexport {isMapboxURL, isMapboxHTTPURL, hasCacheDefeatingSku};\n\nconst telemEventKey = 'mapbox.eventData';\n\nfunction parseAccessToken(accessToken: ?string) {\n if (!accessToken) {\n return null;\n }\n\n const parts = accessToken.split('.');\n if (!parts || parts.length !== 3) {\n return null;\n }\n\n try {\n const jsonData = JSON.parse(b64DecodeUnicode(parts[1]));\n return jsonData;\n } catch (e) {\n return null;\n }\n}\n\ntype TelemetryEventType = 'appUserTurnstile' | 'map.load';\n\nclass TelemetryEvent {\n eventData: any;\n anonId: ?string;\n queue: Array;\n type: TelemetryEventType;\n pendingRequest: ?Cancelable;\n _customAccessToken: ?string;\n\n constructor(type: TelemetryEventType) {\n this.type = type;\n this.anonId = null;\n this.eventData = {};\n this.queue = [];\n this.pendingRequest = null;\n }\n\n getStorageKey(domain: ?string) {\n const tokenData = parseAccessToken(config.ACCESS_TOKEN);\n let u = '';\n if (tokenData && tokenData['u']) {\n u = b64EncodeUnicode(tokenData['u']);\n } else {\n u = config.ACCESS_TOKEN || '';\n }\n return domain ?\n `${telemEventKey}.${domain}:${u}` :\n `${telemEventKey}:${u}`;\n }\n\n fetchEventData() {\n const isLocalStorageAvailable = storageAvailable('localStorage');\n const storageKey = this.getStorageKey();\n const uuidKey = this.getStorageKey('uuid');\n\n if (isLocalStorageAvailable) {\n //Retrieve cached data\n try {\n const data = window.localStorage.getItem(storageKey);\n if (data) {\n this.eventData = JSON.parse(data);\n }\n\n const uuid = window.localStorage.getItem(uuidKey);\n if (uuid) this.anonId = uuid;\n } catch (e) {\n warnOnce('Unable to read from LocalStorage');\n }\n }\n }\n\n saveEventData() {\n const isLocalStorageAvailable = storageAvailable('localStorage');\n const storageKey = this.getStorageKey();\n const uuidKey = this.getStorageKey('uuid');\n if (isLocalStorageAvailable) {\n try {\n window.localStorage.setItem(uuidKey, this.anonId);\n if (Object.keys(this.eventData).length >= 1) {\n window.localStorage.setItem(storageKey, JSON.stringify(this.eventData));\n }\n } catch (e) {\n warnOnce('Unable to write to LocalStorage');\n }\n }\n\n }\n\n processRequests(_: ?string) {}\n\n /*\n * If any event data should be persisted after the POST request, the callback should modify eventData`\n * to the values that should be saved. For this reason, the callback should be invoked prior to the call\n * to TelemetryEvent#saveData\n */\n postEvent(timestamp: number, additionalPayload: {[_: string]: any}, callback: (err: ?Error) => void, customAccessToken?: ?string) {\n if (!config.EVENTS_URL) return;\n const eventsUrlObject: UrlObject = parseUrl(config.EVENTS_URL);\n eventsUrlObject.params.push(`access_token=${customAccessToken || config.ACCESS_TOKEN || ''}`);\n\n const payload: Object = {\n event: this.type,\n created: new Date(timestamp).toISOString(),\n sdkIdentifier: 'mapbox-gl-js',\n sdkVersion,\n skuId: SKU_ID,\n userId: this.anonId\n };\n\n const finalPayload = additionalPayload ? extend(payload, additionalPayload) : payload;\n const request: RequestParameters = {\n url: formatUrl(eventsUrlObject),\n headers: {\n 'Content-Type': 'text/plain' //Skip the pre-flight OPTIONS request\n },\n body: JSON.stringify([finalPayload])\n };\n\n this.pendingRequest = postData(request, (error) => {\n this.pendingRequest = null;\n callback(error);\n this.saveEventData();\n this.processRequests(customAccessToken);\n });\n }\n\n queueRequest(event: number | {id: number, timestamp: number}, customAccessToken?: ?string) {\n this.queue.push(event);\n this.processRequests(customAccessToken);\n }\n}\n\nexport class MapLoadEvent extends TelemetryEvent {\n +success: {[_: number]: boolean};\n skuToken: string;\n\n constructor() {\n super('map.load');\n this.success = {};\n this.skuToken = '';\n }\n\n postMapLoadEvent(tileUrls: Array, mapId: number, skuToken: string, customAccessToken: string) {\n this.skuToken = skuToken;\n\n const accessTokenIsSet = !!(customAccessToken || config.ACCESS_TOKEN);\n const usesMapboxTiles = Array.isArray(tileUrls) && tileUrls.some(url => isMapboxURL(url) || isMapboxHTTPURL(url));\n\n // Enabled only when Mapbox Access Token is set and a source uses mapbox tiles.\n if (config.EVENTS_URL && accessTokenIsSet && usesMapboxTiles) {\n this.queueRequest({id: mapId, timestamp: Date.now()}, customAccessToken);\n }\n }\n\n processRequests(customAccessToken?: ?string) {\n if (this.pendingRequest || this.queue.length === 0) return;\n const {id, timestamp} = this.queue.shift();\n\n // Only one load event should fire per map\n if (id && this.success[id]) return;\n\n if (!this.anonId) {\n this.fetchEventData();\n }\n\n if (!validateUuid(this.anonId)) {\n this.anonId = uuid();\n }\n\n this.postEvent(timestamp, {skuToken: this.skuToken}, (err) => {\n if (!err) {\n if (id) this.success[id] = true;\n }\n }, customAccessToken);\n }\n}\n\nexport class TurnstileEvent extends TelemetryEvent {\n constructor(customAccessToken?: ?string) {\n super('appUserTurnstile');\n this._customAccessToken = customAccessToken;\n }\n\n postTurnstileEvent(tileUrls: Array, customAccessToken?: ?string) {\n //Enabled only when Mapbox Access Token is set and a source uses\n // mapbox tiles.\n if (config.EVENTS_URL &&\n config.ACCESS_TOKEN &&\n Array.isArray(tileUrls) &&\n tileUrls.some(url => isMapboxURL(url) || isMapboxHTTPURL(url))) {\n this.queueRequest(Date.now(), customAccessToken);\n }\n }\n\n processRequests(customAccessToken?: ?string) {\n if (this.pendingRequest || this.queue.length === 0) {\n return;\n }\n\n if (!this.anonId || !this.eventData.lastSuccess || !this.eventData.tokenU) {\n //Retrieve cached data\n this.fetchEventData();\n }\n\n const tokenData = parseAccessToken(config.ACCESS_TOKEN);\n const tokenU = tokenData ? tokenData['u'] : config.ACCESS_TOKEN;\n //Reset event data cache if the access token owner changed.\n let dueForEvent = tokenU !== this.eventData.tokenU;\n\n if (!validateUuid(this.anonId)) {\n this.anonId = uuid();\n dueForEvent = true;\n }\n\n const nextUpdate = this.queue.shift();\n // Record turnstile event once per calendar day.\n if (this.eventData.lastSuccess) {\n const lastUpdate = new Date(this.eventData.lastSuccess);\n const nextDate = new Date(nextUpdate);\n const daysElapsed = (nextUpdate - this.eventData.lastSuccess) / (24 * 60 * 60 * 1000);\n dueForEvent = dueForEvent || daysElapsed >= 1 || daysElapsed < -1 || lastUpdate.getDate() !== nextDate.getDate();\n } else {\n dueForEvent = true;\n }\n\n if (!dueForEvent) {\n return this.processRequests();\n }\n\n this.postEvent(nextUpdate, {\"enabled.telemetry\": false}, (err) => {\n if (!err) {\n this.eventData.lastSuccess = nextUpdate;\n this.eventData.tokenU = tokenU;\n }\n }, customAccessToken);\n }\n}\n\nconst turnstileEvent_ = new TurnstileEvent();\nexport const postTurnstileEvent = turnstileEvent_.postTurnstileEvent.bind(turnstileEvent_);\n\nconst mapLoadEvent_ = new MapLoadEvent();\nexport const postMapLoadEvent = mapLoadEvent_.postMapLoadEvent.bind(mapLoadEvent_);\n\n/***** END WARNING - REMOVAL OR MODIFICATION OF THE\nPRECEDING CODE VIOLATES THE MAPBOX TERMS OF SERVICE ******/\n", "// @flow\n\nimport {warnOnce, parseCacheControl} from './util';\nimport window from './window';\n\nimport type Dispatcher from './dispatcher';\n\nconst CACHE_NAME = 'mapbox-tiles';\nlet cacheLimit = 500; // 50MB / (100KB/tile) ~= 500 tiles\nlet cacheCheckThreshold = 50;\n\nconst MIN_TIME_UNTIL_EXPIRY = 1000 * 60 * 7; // 7 minutes. Skip caching tiles with a short enough max age.\n\nexport type ResponseOptions = {\n status: number,\n statusText: string,\n headers: window.Headers\n};\n\n// We're using a global shared cache object. Normally, requesting ad-hoc Cache objects is fine, but\n// Safari has a memory leak in which it fails to release memory when requesting keys() from a Cache\n// object. See https://bugs.webkit.org/show_bug.cgi?id=203991 for more information.\nlet sharedCache: ?Promise;\n\nfunction cacheOpen() {\n if (window.caches && !sharedCache) {\n sharedCache = window.caches.open(CACHE_NAME);\n }\n}\n\n// We're never closing the cache, but our unit tests rely on changing out the global window.caches\n// object, so we have a function specifically for unit tests that allows resetting the shared cache.\nexport function cacheClose() {\n sharedCache = undefined;\n}\n\nlet responseConstructorSupportsReadableStream;\nfunction prepareBody(response: Response, callback) {\n if (responseConstructorSupportsReadableStream === undefined) {\n try {\n new Response(new ReadableStream()); // eslint-disable-line no-undef\n responseConstructorSupportsReadableStream = true;\n } catch (e) {\n // Edge\n responseConstructorSupportsReadableStream = false;\n }\n }\n\n if (responseConstructorSupportsReadableStream) {\n callback(response.body);\n } else {\n response.blob().then(callback);\n }\n}\n\nexport function cachePut(request: Request, response: Response, requestTime: number) {\n cacheOpen();\n if (!sharedCache) return;\n\n const options: ResponseOptions = {\n status: response.status,\n statusText: response.statusText,\n headers: new window.Headers()\n };\n response.headers.forEach((v, k) => options.headers.set(k, v));\n\n const cacheControl = parseCacheControl(response.headers.get('Cache-Control') || '');\n if (cacheControl['no-store']) {\n return;\n }\n if (cacheControl['max-age']) {\n options.headers.set('Expires', new Date(requestTime + cacheControl['max-age'] * 1000).toUTCString());\n }\n\n const timeUntilExpiry = new Date(options.headers.get('Expires')).getTime() - requestTime;\n if (timeUntilExpiry < MIN_TIME_UNTIL_EXPIRY) return;\n\n prepareBody(response, body => {\n const clonedResponse = new window.Response(body, options);\n\n cacheOpen();\n if (!sharedCache) return;\n sharedCache\n .then(cache => cache.put(stripQueryParameters(request.url), clonedResponse))\n .catch(e => warnOnce(e.message));\n });\n}\n\nfunction stripQueryParameters(url: string) {\n const start = url.indexOf('?');\n return start < 0 ? url : url.slice(0, start);\n}\n\nexport function cacheGet(request: Request, callback: (error: ?any, response: ?Response, fresh: ?boolean) => void) {\n cacheOpen();\n if (!sharedCache) return callback(null);\n\n const strippedURL = stripQueryParameters(request.url);\n\n sharedCache\n .then(cache => {\n // manually strip URL instead of `ignoreSearch: true` because of a known\n // performance issue in Chrome https://github.com/mapbox/mapbox-gl-js/issues/8431\n cache.match(strippedURL)\n .then(response => {\n const fresh = isFresh(response);\n\n // Reinsert into cache so that order of keys in the cache is the order of access.\n // This line makes the cache a LRU instead of a FIFO cache.\n cache.delete(strippedURL);\n if (fresh) {\n cache.put(strippedURL, response.clone());\n }\n\n callback(null, response, fresh);\n })\n .catch(callback);\n })\n .catch(callback);\n\n}\n\nfunction isFresh(response) {\n if (!response) return false;\n const expires = new Date(response.headers.get('Expires') || 0);\n const cacheControl = parseCacheControl(response.headers.get('Cache-Control') || '');\n return expires > Date.now() && !cacheControl['no-cache'];\n}\n\n// `Infinity` triggers a cache check after the first tile is loaded\n// so that a check is run at least once on each page load.\nlet globalEntryCounter = Infinity;\n\n// The cache check gets run on a worker. The reason for this is that\n// profiling sometimes shows this as taking up significant time on the\n// thread it gets called from. And sometimes it doesn't. It *may* be\n// fine to run this on the main thread but out of caution this is being\n// dispatched on a worker. This can be investigated further in the future.\nexport function cacheEntryPossiblyAdded(dispatcher: Dispatcher) {\n globalEntryCounter++;\n if (globalEntryCounter > cacheCheckThreshold) {\n dispatcher.getActor().send('enforceCacheSizeLimit', cacheLimit);\n globalEntryCounter = 0;\n }\n}\n\n// runs on worker, see above comment\nexport function enforceCacheSizeLimit(limit: number) {\n cacheOpen();\n if (!sharedCache) return;\n\n sharedCache\n .then(cache => {\n cache.keys().then(keys => {\n for (let i = 0; i < keys.length - limit; i++) {\n cache.delete(keys[i]);\n }\n });\n });\n}\n\nexport function clearTileCache(callback?: (err: ?Error) => void) {\n const promise = window.caches.delete(CACHE_NAME);\n if (callback) {\n promise.catch(callback).then(() => callback());\n }\n}\n\nexport function setCacheLimits(limit: number, checkThreshold: number) {\n cacheLimit = limit;\n cacheCheckThreshold = checkThreshold;\n}\n", "// @flow\nimport window from './window';\n\nlet supportsOffscreenCanvas: ?boolean;\n\nexport default function offscreenCanvasSupported(): boolean {\n if (supportsOffscreenCanvas == null) {\n supportsOffscreenCanvas = window.OffscreenCanvas &&\n new window.OffscreenCanvas(1, 1).getContext('2d') &&\n typeof window.createImageBitmap === 'function';\n }\n\n return supportsOffscreenCanvas;\n}\n", "// @flow\n\nimport window from './window';\nimport {extend, warnOnce, isWorker} from './util';\nimport {isMapboxHTTPURL, hasCacheDefeatingSku} from './mapbox';\nimport config from './config';\nimport assert from 'assert';\nimport {cacheGet, cachePut} from './tile_request_cache';\nimport webpSupported from './webp_supported';\nimport offscreenCanvasSupported from './offscreen_canvas_supported';\n\nimport type {Callback} from '../types/callback';\nimport type {Cancelable} from '../types/cancelable';\n\n/**\n * The type of a resource.\n * @private\n * @readonly\n * @enum {string}\n */\nconst ResourceType = {\n Unknown: 'Unknown',\n Style: 'Style',\n Source: 'Source',\n Tile: 'Tile',\n Glyphs: 'Glyphs',\n SpriteImage: 'SpriteImage',\n SpriteJSON: 'SpriteJSON',\n Image: 'Image'\n};\nexport {ResourceType};\n\nif (typeof Object.freeze == 'function') {\n Object.freeze(ResourceType);\n}\n\n/**\n * A `RequestParameters` object to be returned from Map.options.transformRequest callbacks.\n * @typedef {Object} RequestParameters\n * @property {string} url The URL to be requested.\n * @property {Object} headers The headers to be sent with the request.\n * @property {string} method Request method `'GET' | 'POST' | 'PUT'`.\n * @property {string} body Request body.\n * @property {string} type Response body type to be returned `'string' | 'json' | 'arrayBuffer'`.\n * @property {string} credentials `'same-origin'|'include'` Use 'include' to send cookies with cross-origin requests.\n * @property {boolean} collectResourceTiming If true, Resource Timing API information will be collected for these transformed requests and returned in a resourceTiming property of relevant data events.\n * @example\n * // use transformRequest to modify requests that begin with `http://myHost`\n * transformRequest: function(url, resourceType) {\n * if (resourceType === 'Source' && url.indexOf('http://myHost') > -1) {\n * return {\n * url: url.replace('http', 'https'),\n * headers: { 'my-custom-header': true },\n * credentials: 'include' // Include cookies for cross-origin requests\n * }\n * }\n * }\n *\n */\nexport type RequestParameters = {\n url: string,\n headers?: Object,\n method?: 'GET' | 'POST' | 'PUT',\n body?: string,\n type?: 'string' | 'json' | 'arrayBuffer',\n credentials?: 'same-origin' | 'include',\n collectResourceTiming?: boolean\n};\n\nexport type ResponseCallback = (error: ?Error, data: ?T, cacheControl: ?string, expires: ?string) => void;\n\nclass AJAXError extends Error {\n status: number;\n url: string;\n constructor(message: string, status: number, url: string) {\n if (status === 401 && isMapboxHTTPURL(url)) {\n message += ': you may have provided an invalid Mapbox access token. See https://www.mapbox.com/api-documentation/#access-tokens-and-token-scopes';\n }\n super(message);\n this.status = status;\n this.url = url;\n\n // work around for https://github.com/Rich-Harris/buble/issues/40\n this.name = this.constructor.name;\n this.message = message;\n }\n\n toString() {\n return `${this.name}: ${this.message} (${this.status}): ${this.url}`;\n }\n}\n\n// Ensure that we're sending the correct referrer from blob URL worker bundles.\n// For files loaded from the local file system, `location.origin` will be set\n// to the string(!) \"null\" (Firefox), or \"file://\" (Chrome, Safari, Edge, IE),\n// and we will set an empty referrer. Otherwise, we're using the document's URL.\n/* global self */\nexport const getReferrer = isWorker() ?\n () => self.worker && self.worker.referrer :\n () => (window.location.protocol === 'blob:' ? window.parent : window).location.href;\n\n// Determines whether a URL is a file:// URL. This is obviously the case if it begins\n// with file://. Relative URLs are also file:// URLs iff the original document was loaded\n// via a file:// URL.\nconst isFileURL = url => /^file:/.test(url) || (/^file:/.test(getReferrer()) && !/^\\w+:/.test(url));\n\nfunction makeFetchRequest(requestParameters: RequestParameters, callback: ResponseCallback): Cancelable {\n const controller = new window.AbortController();\n const request = new window.Request(requestParameters.url, {\n method: requestParameters.method || 'GET',\n body: requestParameters.body,\n credentials: requestParameters.credentials,\n headers: requestParameters.headers,\n referrer: getReferrer(),\n signal: controller.signal\n });\n let complete = false;\n let aborted = false;\n\n const cacheIgnoringSearch = hasCacheDefeatingSku(request.url);\n\n if (requestParameters.type === 'json') {\n request.headers.set('Accept', 'application/json');\n }\n\n const validateOrFetch = (err, cachedResponse, responseIsFresh) => {\n if (aborted) return;\n\n if (err) {\n // Do fetch in case of cache error.\n // HTTP pages in Edge trigger a security error that can be ignored.\n if (err.message !== 'SecurityError') {\n warnOnce(err);\n }\n }\n\n if (cachedResponse && responseIsFresh) {\n return finishRequest(cachedResponse);\n }\n\n if (cachedResponse) {\n // We can't do revalidation with 'If-None-Match' because then the\n // request doesn't have simple cors headers.\n }\n\n const requestTime = Date.now();\n\n window.fetch(request).then(response => {\n if (response.ok) {\n const cacheableResponse = cacheIgnoringSearch ? response.clone() : null;\n return finishRequest(response, cacheableResponse, requestTime);\n\n } else {\n return callback(new AJAXError(response.statusText, response.status, requestParameters.url));\n }\n }).catch(error => {\n if (error.code === 20) {\n // silence expected AbortError\n return;\n }\n callback(new Error(error.message));\n });\n };\n\n const finishRequest = (response, cacheableResponse, requestTime) => {\n (\n requestParameters.type === 'arrayBuffer' ? response.arrayBuffer() :\n requestParameters.type === 'json' ? response.json() :\n response.text()\n ).then(result => {\n if (aborted) return;\n if (cacheableResponse && requestTime) {\n // The response needs to be inserted into the cache after it has completely loaded.\n // Until it is fully loaded there is a chance it will be aborted. Aborting while\n // reading the body can cause the cache insertion to error. We could catch this error\n // in most browsers but in Firefox it seems to sometimes crash the tab. Adding\n // it to the cache here avoids that error.\n cachePut(request, cacheableResponse, requestTime);\n }\n complete = true;\n callback(null, result, response.headers.get('Cache-Control'), response.headers.get('Expires'));\n }).catch(err => {\n if (!aborted) callback(new Error(err.message));\n });\n };\n\n if (cacheIgnoringSearch) {\n cacheGet(request, validateOrFetch);\n } else {\n validateOrFetch(null, null);\n }\n\n return {cancel: () => {\n aborted = true;\n if (!complete) controller.abort();\n }};\n}\n\nfunction makeXMLHttpRequest(requestParameters: RequestParameters, callback: ResponseCallback): Cancelable {\n const xhr: XMLHttpRequest = new window.XMLHttpRequest();\n\n xhr.open(requestParameters.method || 'GET', requestParameters.url, true);\n if (requestParameters.type === 'arrayBuffer') {\n xhr.responseType = 'arraybuffer';\n }\n for (const k in requestParameters.headers) {\n xhr.setRequestHeader(k, requestParameters.headers[k]);\n }\n if (requestParameters.type === 'json') {\n xhr.responseType = 'text';\n xhr.setRequestHeader('Accept', 'application/json');\n }\n xhr.withCredentials = requestParameters.credentials === 'include';\n xhr.onerror = () => {\n callback(new Error(xhr.statusText));\n };\n xhr.onload = () => {\n if (((xhr.status >= 200 && xhr.status < 300) || xhr.status === 0) && xhr.response !== null) {\n let data: mixed = xhr.response;\n if (requestParameters.type === 'json') {\n // We're manually parsing JSON here to get better error messages.\n try {\n data = JSON.parse(xhr.response);\n } catch (err) {\n return callback(err);\n }\n }\n callback(null, data, xhr.getResponseHeader('Cache-Control'), xhr.getResponseHeader('Expires'));\n } else {\n callback(new AJAXError(xhr.statusText, xhr.status, requestParameters.url));\n }\n };\n xhr.send(requestParameters.body);\n return {cancel: () => xhr.abort()};\n}\n\nexport const makeRequest = function(requestParameters: RequestParameters, callback: ResponseCallback): Cancelable {\n // We're trying to use the Fetch API if possible. However, in some situations we can't use it:\n // - IE11 doesn't support it at all. In this case, we dispatch the request to the main thread so\n // that we can get an accruate referrer header.\n // - Safari exposes window.AbortController, but it doesn't work actually abort any requests in\n // some versions (see https://bugs.webkit.org/show_bug.cgi?id=174980#c2)\n // - Requests for resources with the file:// URI scheme don't work with the Fetch API either. In\n // this case we unconditionally use XHR on the current thread since referrers don't matter.\n if (!isFileURL(requestParameters.url)) {\n if (window.fetch && window.Request && window.AbortController && window.Request.prototype.hasOwnProperty('signal')) {\n return makeFetchRequest(requestParameters, callback);\n }\n if (isWorker() && self.worker && self.worker.actor) {\n const queueOnMainThread = true;\n return self.worker.actor.send('getResource', requestParameters, callback, undefined, queueOnMainThread);\n }\n }\n return makeXMLHttpRequest(requestParameters, callback);\n};\n\nexport const getJSON = function(requestParameters: RequestParameters, callback: ResponseCallback): Cancelable {\n return makeRequest(extend(requestParameters, {type: 'json'}), callback);\n};\n\nexport const getArrayBuffer = function(requestParameters: RequestParameters, callback: ResponseCallback): Cancelable {\n return makeRequest(extend(requestParameters, {type: 'arrayBuffer'}), callback);\n};\n\nexport const postData = function(requestParameters: RequestParameters, callback: ResponseCallback): Cancelable {\n return makeRequest(extend(requestParameters, {method: 'POST'}), callback);\n};\n\nfunction sameOrigin(url) {\n const a: HTMLAnchorElement = window.document.createElement('a');\n a.href = url;\n return a.protocol === window.document.location.protocol && a.host === window.document.location.host;\n}\n\nconst transparentPngUrl = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAC0lEQVQYV2NgAAIAAAUAAarVyFEAAAAASUVORK5CYII=';\n\nfunction arrayBufferToImage(data: ArrayBuffer, callback: (err: ?Error, image: ?HTMLImageElement) => void, cacheControl: ?string, expires: ?string) {\n const img: HTMLImageElement = new window.Image();\n const URL = window.URL;\n img.onload = () => {\n callback(null, img);\n URL.revokeObjectURL(img.src);\n // prevent image dataURI memory leak in Safari;\n // but don't free the image immediately because it might be uploaded in the next frame\n // https://github.com/mapbox/mapbox-gl-js/issues/10226\n img.onload = null;\n window.requestAnimationFrame(() => { img.src = transparentPngUrl; });\n };\n img.onerror = () => callback(new Error('Could not load image. Please make sure to use a supported image type such as PNG or JPEG. Note that SVGs are not supported.'));\n const blob: Blob = new window.Blob([new Uint8Array(data)], {type: 'image/png'});\n (img: any).cacheControl = cacheControl;\n (img: any).expires = expires;\n img.src = data.byteLength ? URL.createObjectURL(blob) : transparentPngUrl;\n}\n\nfunction arrayBufferToImageBitmap(data: ArrayBuffer, callback: (err: ?Error, image: ?ImageBitmap) => void) {\n const blob: Blob = new window.Blob([new Uint8Array(data)], {type: 'image/png'});\n window.createImageBitmap(blob).then((imgBitmap) => {\n callback(null, imgBitmap);\n }).catch((e) => {\n callback(new Error(`Could not load image because of ${e.message}. Please make sure to use a supported image type such as PNG or JPEG. Note that SVGs are not supported.`));\n });\n}\n\nlet imageQueue, numImageRequests;\nexport const resetImageRequestQueue = () => {\n imageQueue = [];\n numImageRequests = 0;\n};\nresetImageRequestQueue();\n\nexport const getImage = function(requestParameters: RequestParameters, callback: Callback): Cancelable {\n if (webpSupported.supported) {\n if (!requestParameters.headers) {\n requestParameters.headers = {};\n }\n requestParameters.headers.accept = 'image/webp,*/*';\n }\n\n // limit concurrent image loads to help with raster sources performance on big screens\n if (numImageRequests >= config.MAX_PARALLEL_IMAGE_REQUESTS) {\n const queued = {\n requestParameters,\n callback,\n cancelled: false,\n cancel() { this.cancelled = true; }\n };\n imageQueue.push(queued);\n return queued;\n }\n numImageRequests++;\n\n let advanced = false;\n const advanceImageRequestQueue = () => {\n if (advanced) return;\n advanced = true;\n numImageRequests--;\n assert(numImageRequests >= 0);\n while (imageQueue.length && numImageRequests < config.MAX_PARALLEL_IMAGE_REQUESTS) { // eslint-disable-line\n const request = imageQueue.shift();\n const {requestParameters, callback, cancelled} = request;\n if (!cancelled) {\n request.cancel = getImage(requestParameters, callback).cancel;\n }\n }\n };\n\n // request the image with XHR to work around caching issues\n // see https://github.com/mapbox/mapbox-gl-js/issues/1470\n const request = getArrayBuffer(requestParameters, (err: ?Error, data: ?ArrayBuffer, cacheControl: ?string, expires: ?string) => {\n\n advanceImageRequestQueue();\n\n if (err) {\n callback(err);\n } else if (data) {\n if (offscreenCanvasSupported()) {\n arrayBufferToImageBitmap(data, callback);\n } else {\n arrayBufferToImage(data, callback, cacheControl, expires);\n }\n }\n });\n\n return {\n cancel: () => {\n request.cancel();\n advanceImageRequestQueue();\n }\n };\n};\n\nexport const getVideo = function(urls: Array, callback: Callback): Cancelable {\n const video: HTMLVideoElement = window.document.createElement('video');\n video.muted = true;\n video.onloadstart = function() {\n callback(null, video);\n };\n for (let i = 0; i < urls.length; i++) {\n const s: HTMLSourceElement = window.document.createElement('source');\n if (!sameOrigin(urls[i])) {\n video.crossOrigin = 'Anonymous';\n }\n s.src = urls[i];\n video.appendChild(s);\n }\n return {cancel: () => {}};\n};\n", "// @flow\n\nimport {extend} from './util';\n\ntype Listener = (Object) => any;\ntype Listeners = {[_: string]: Array };\n\nfunction _addEventListener(type: string, listener: Listener, listenerList: Listeners) {\n const listenerExists = listenerList[type] && listenerList[type].indexOf(listener) !== -1;\n if (!listenerExists) {\n listenerList[type] = listenerList[type] || [];\n listenerList[type].push(listener);\n }\n}\n\nfunction _removeEventListener(type: string, listener: Listener, listenerList: Listeners) {\n if (listenerList && listenerList[type]) {\n const index = listenerList[type].indexOf(listener);\n if (index !== -1) {\n listenerList[type].splice(index, 1);\n }\n }\n}\n\nexport class Event {\n +type: string;\n\n constructor(type: string, data: Object = {}) {\n extend(this, data);\n this.type = type;\n }\n}\n\ninterface ErrorLike {\n message: string;\n}\n\nexport class ErrorEvent extends Event {\n error: ErrorLike;\n\n constructor(error: ErrorLike, data: Object = {}) {\n super('error', extend({error}, data));\n }\n}\n\n/**\n * Methods mixed in to other classes for event capabilities.\n *\n * @mixin Evented\n */\nexport class Evented {\n _listeners: Listeners;\n _oneTimeListeners: Listeners;\n _eventedParent: ?Evented;\n _eventedParentData: ?(Object | () => Object);\n\n /**\n * Adds a listener to a specified event type.\n *\n * @param {string} type The event type to add a listen for.\n * @param {Function} listener The function to be called when the event is fired.\n * The listener function is called with the data object passed to `fire`,\n * extended with `target` and `type` properties.\n * @returns {Object} `this`\n */\n on(type: *, listener: Listener): this {\n this._listeners = this._listeners || {};\n _addEventListener(type, listener, this._listeners);\n\n return this;\n }\n\n /**\n * Removes a previously registered event listener.\n *\n * @param {string} type The event type to remove listeners for.\n * @param {Function} listener The listener function to remove.\n * @returns {Object} `this`\n */\n off(type: *, listener: Listener) {\n _removeEventListener(type, listener, this._listeners);\n _removeEventListener(type, listener, this._oneTimeListeners);\n\n return this;\n }\n\n /**\n * Adds a listener that will be called only once to a specified event type.\n *\n * The listener will be called first time the event fires after the listener is registered.\n *\n * @param {string} type The event type to listen for.\n * @param {Function} listener The function to be called when the event is fired the first time.\n * @returns {Object} `this`\n */\n once(type: *, listener: Listener) {\n this._oneTimeListeners = this._oneTimeListeners || {};\n _addEventListener(type, listener, this._oneTimeListeners);\n\n return this;\n }\n\n fire(event: Event, properties?: Object) {\n // Compatibility with (type: string, properties: Object) signature from previous versions.\n // See https://github.com/mapbox/mapbox-gl-js/issues/6522,\n // https://github.com/mapbox/mapbox-gl-draw/issues/766\n if (typeof event === 'string') {\n event = new Event(event, properties || {});\n }\n\n const type = event.type;\n\n if (this.listens(type)) {\n (event: any).target = this;\n\n // make sure adding or removing listeners inside other listeners won't cause an infinite loop\n const listeners = this._listeners && this._listeners[type] ? this._listeners[type].slice() : [];\n for (const listener of listeners) {\n listener.call(this, event);\n }\n\n const oneTimeListeners = this._oneTimeListeners && this._oneTimeListeners[type] ? this._oneTimeListeners[type].slice() : [];\n for (const listener of oneTimeListeners) {\n _removeEventListener(type, listener, this._oneTimeListeners);\n listener.call(this, event);\n }\n\n const parent = this._eventedParent;\n if (parent) {\n extend(\n event,\n typeof this._eventedParentData === 'function' ? this._eventedParentData() : this._eventedParentData\n );\n parent.fire(event);\n }\n\n // To ensure that no error events are dropped, print them to the\n // console if they have no listeners.\n } else if (event instanceof ErrorEvent) {\n console.error(event.error);\n }\n\n return this;\n }\n\n /**\n * Returns a true if this instance of Evented or any forwardeed instances of Evented have a listener for the specified type.\n *\n * @param {string} type The event type\n * @returns {boolean} `true` if there is at least one registered listener for specified event type, `false` otherwise\n * @private\n */\n listens(type: string) {\n return (\n (this._listeners && this._listeners[type] && this._listeners[type].length > 0) ||\n (this._oneTimeListeners && this._oneTimeListeners[type] && this._oneTimeListeners[type].length > 0) ||\n (this._eventedParent && this._eventedParent.listens(type))\n );\n }\n\n /**\n * Bubble all events fired by this instance of Evented to this parent instance of Evented.\n *\n * @private\n * @returns {Object} `this`\n * @private\n */\n setEventedParent(parent: ?Evented, data?: Object | () => Object) {\n this._eventedParent = parent;\n this._eventedParentData = data;\n\n return this;\n }\n}\n", "// @flow\n\n// Note: Do not inherit from Error. It breaks when transpiling to ES5.\n\nexport default class ValidationError {\n message: string;\n identifier: ?string;\n line: ?number;\n\n constructor(key: ?string, value: ?{ __line__: number }, message: string, identifier: ?string) {\n this.message = (key ? `${key}: ` : '') + message;\n if (identifier) this.identifier = identifier;\n\n if (value !== null && value !== undefined && value.__line__) {\n this.line = value.__line__;\n }\n }\n}\n", "\nimport ValidationError from '../error/validation_error';\n\nexport default function validateConstants(options) {\n const key = options.key;\n const constants = options.value;\n\n if (constants) {\n return [new ValidationError(key, constants, 'constants have been deprecated as of v8')];\n } else {\n return [];\n }\n}\n", "// @flow\n\nexport default function (output: any, ...inputs: Array) {\n for (const input of inputs) {\n for (const k in input) {\n output[k] = input[k];\n }\n }\n return output;\n}\n", "// @flow\n\n// Turn jsonlint-lines-primitives objects into primitive objects\nexport function unbundle(value: mixed) {\n if (value instanceof Number || value instanceof String || value instanceof Boolean) {\n return value.valueOf();\n } else {\n return value;\n }\n}\n\nexport function deepUnbundle(value: mixed): mixed {\n if (Array.isArray(value)) {\n return value.map(deepUnbundle);\n } else if (value instanceof Object && !(value instanceof Number || value instanceof String || value instanceof Boolean)) {\n const unbundledValue: { [key: string]: mixed } = {};\n for (const key in value) {\n unbundledValue[key] = deepUnbundle(value[key]);\n }\n return unbundledValue;\n }\n\n return unbundle(value);\n}\n", "// @flow\n\nclass ParsingError extends Error {\n key: string;\n message: string;\n constructor(key: string, message: string) {\n super(message);\n this.message = message;\n this.key = key;\n }\n}\n\nexport default ParsingError;\n", "// @flow\n\nimport type {Expression} from './expression';\n\n/**\n * Tracks `let` bindings during expression parsing.\n * @private\n */\nclass Scope {\n parent: ?Scope;\n bindings: {[_: string]: Expression};\n constructor(parent?: Scope, bindings: Array<[string, Expression]> = []) {\n this.parent = parent;\n this.bindings = {};\n for (const [name, expression] of bindings) {\n this.bindings[name] = expression;\n }\n }\n\n concat(bindings: Array<[string, Expression]>) {\n return new Scope(this, bindings);\n }\n\n get(name: string): Expression {\n if (this.bindings[name]) { return this.bindings[name]; }\n if (this.parent) { return this.parent.get(name); }\n throw new Error(`${name} not found in scope.`);\n }\n\n has(name: string): boolean {\n if (this.bindings[name]) return true;\n return this.parent ? this.parent.has(name) : false;\n }\n}\n\nexport default Scope;\n", "// @flow\n\nexport type NullTypeT = { kind: 'null' };\nexport type NumberTypeT = { kind: 'number' };\nexport type StringTypeT = { kind: 'string' };\nexport type BooleanTypeT = { kind: 'boolean' };\nexport type ColorTypeT = { kind: 'color' };\nexport type ObjectTypeT = { kind: 'object' };\nexport type ValueTypeT = { kind: 'value' };\nexport type ErrorTypeT = { kind: 'error' };\nexport type CollatorTypeT = { kind: 'collator' };\nexport type FormattedTypeT = { kind: 'formatted' };\nexport type ResolvedImageTypeT = { kind: 'resolvedImage' };\n\nexport type EvaluationKind = 'constant' | 'source' | 'camera' | 'composite';\n\nexport type Type =\n NullTypeT |\n NumberTypeT |\n StringTypeT |\n BooleanTypeT |\n ColorTypeT |\n ObjectTypeT |\n ValueTypeT |\n ArrayType | // eslint-disable-line no-use-before-define\n ErrorTypeT |\n CollatorTypeT |\n FormattedTypeT |\n ResolvedImageTypeT\n\nexport type ArrayType = {\n kind: 'array',\n itemType: Type,\n N: ?number\n}\n\nexport type NativeType = 'number' | 'string' | 'boolean' | 'null' | 'array' | 'object'\n\nexport const NullType = {kind: 'null'};\nexport const NumberType = {kind: 'number'};\nexport const StringType = {kind: 'string'};\nexport const BooleanType = {kind: 'boolean'};\nexport const ColorType = {kind: 'color'};\nexport const ObjectType = {kind: 'object'};\nexport const ValueType = {kind: 'value'};\nexport const ErrorType = {kind: 'error'};\nexport const CollatorType = {kind: 'collator'};\nexport const FormattedType = {kind: 'formatted'};\nexport const ResolvedImageType = {kind: 'resolvedImage'};\n\nexport function array(itemType: Type, N: ?number): ArrayType {\n return {\n kind: 'array',\n itemType,\n N\n };\n}\n\nexport function toString(type: Type): string {\n if (type.kind === 'array') {\n const itemType = toString(type.itemType);\n return typeof type.N === 'number' ?\n `array<${itemType}, ${type.N}>` :\n type.itemType.kind === 'value' ? 'array' : `array<${itemType}>`;\n } else {\n return type.kind;\n }\n}\n\nconst valueMemberTypes = [\n NullType,\n NumberType,\n StringType,\n BooleanType,\n ColorType,\n FormattedType,\n ObjectType,\n array(ValueType),\n ResolvedImageType\n];\n\n/**\n * Returns null if `t` is a subtype of `expected`; otherwise returns an\n * error message.\n * @private\n */\nexport function checkSubtype(expected: Type, t: Type): ?string {\n if (t.kind === 'error') {\n // Error is a subtype of every type\n return null;\n } else if (expected.kind === 'array') {\n if (t.kind === 'array' &&\n ((t.N === 0 && t.itemType.kind === 'value') || !checkSubtype(expected.itemType, t.itemType)) &&\n (typeof expected.N !== 'number' || expected.N === t.N)) {\n return null;\n }\n } else if (expected.kind === t.kind) {\n return null;\n } else if (expected.kind === 'value') {\n for (const memberType of valueMemberTypes) {\n if (!checkSubtype(memberType, t)) {\n return null;\n }\n }\n }\n\n return `Expected ${toString(expected)} but found ${toString(t)} instead.`;\n}\n\nexport function isValidType(provided: Type, allowedTypes: Array): boolean {\n return allowedTypes.some(t => t.kind === provided.kind);\n}\n\nexport function isValidNativeType(provided: any, allowedTypes: Array): boolean {\n return allowedTypes.some(t => {\n if (t === 'null') {\n return provided === null;\n } else if (t === 'array') {\n return Array.isArray(provided);\n } else if (t === 'object') {\n return provided && !Array.isArray(provided) && typeof provided === 'object';\n } else {\n return t === typeof provided;\n }\n });\n}\n", "// (c) Dean McNamee , 2012.\n//\n// https://github.com/deanm/css-color-parser-js\n//\n// Permission is hereby granted, free of charge, to any person obtaining a copy\n// of this software and associated documentation files (the \"Software\"), to\n// deal in the Software without restriction, including without limitation the\n// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n// sell copies of the Software, and to permit persons to whom the Software is\n// furnished to do so, subject to the following conditions:\n//\n// The above copyright notice and this permission notice shall be included in\n// all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n// IN THE SOFTWARE.\n\n// http://www.w3.org/TR/css3-color/\nvar kCSSColorTable = {\n \"transparent\": [0,0,0,0], \"aliceblue\": [240,248,255,1],\n \"antiquewhite\": [250,235,215,1], \"aqua\": [0,255,255,1],\n \"aquamarine\": [127,255,212,1], \"azure\": [240,255,255,1],\n \"beige\": [245,245,220,1], \"bisque\": [255,228,196,1],\n \"black\": [0,0,0,1], \"blanchedalmond\": [255,235,205,1],\n \"blue\": [0,0,255,1], \"blueviolet\": [138,43,226,1],\n \"brown\": [165,42,42,1], \"burlywood\": [222,184,135,1],\n \"cadetblue\": [95,158,160,1], \"chartreuse\": [127,255,0,1],\n \"chocolate\": [210,105,30,1], \"coral\": [255,127,80,1],\n \"cornflowerblue\": [100,149,237,1], \"cornsilk\": [255,248,220,1],\n \"crimson\": [220,20,60,1], \"cyan\": [0,255,255,1],\n \"darkblue\": [0,0,139,1], \"darkcyan\": [0,139,139,1],\n \"darkgoldenrod\": [184,134,11,1], \"darkgray\": [169,169,169,1],\n \"darkgreen\": [0,100,0,1], \"darkgrey\": [169,169,169,1],\n \"darkkhaki\": [189,183,107,1], \"darkmagenta\": [139,0,139,1],\n \"darkolivegreen\": [85,107,47,1], \"darkorange\": [255,140,0,1],\n \"darkorchid\": [153,50,204,1], \"darkred\": [139,0,0,1],\n \"darksalmon\": [233,150,122,1], \"darkseagreen\": [143,188,143,1],\n \"darkslateblue\": [72,61,139,1], \"darkslategray\": [47,79,79,1],\n \"darkslategrey\": [47,79,79,1], \"darkturquoise\": [0,206,209,1],\n \"darkviolet\": [148,0,211,1], \"deeppink\": [255,20,147,1],\n \"deepskyblue\": [0,191,255,1], \"dimgray\": [105,105,105,1],\n \"dimgrey\": [105,105,105,1], \"dodgerblue\": [30,144,255,1],\n \"firebrick\": [178,34,34,1], \"floralwhite\": [255,250,240,1],\n \"forestgreen\": [34,139,34,1], \"fuchsia\": [255,0,255,1],\n \"gainsboro\": [220,220,220,1], \"ghostwhite\": [248,248,255,1],\n \"gold\": [255,215,0,1], \"goldenrod\": [218,165,32,1],\n \"gray\": [128,128,128,1], \"green\": [0,128,0,1],\n \"greenyellow\": [173,255,47,1], \"grey\": [128,128,128,1],\n \"honeydew\": [240,255,240,1], \"hotpink\": [255,105,180,1],\n \"indianred\": [205,92,92,1], \"indigo\": [75,0,130,1],\n \"ivory\": [255,255,240,1], \"khaki\": [240,230,140,1],\n \"lavender\": [230,230,250,1], \"lavenderblush\": [255,240,245,1],\n \"lawngreen\": [124,252,0,1], \"lemonchiffon\": [255,250,205,1],\n \"lightblue\": [173,216,230,1], \"lightcoral\": [240,128,128,1],\n \"lightcyan\": [224,255,255,1], \"lightgoldenrodyellow\": [250,250,210,1],\n \"lightgray\": [211,211,211,1], \"lightgreen\": [144,238,144,1],\n \"lightgrey\": [211,211,211,1], \"lightpink\": [255,182,193,1],\n \"lightsalmon\": [255,160,122,1], \"lightseagreen\": [32,178,170,1],\n \"lightskyblue\": [135,206,250,1], \"lightslategray\": [119,136,153,1],\n \"lightslategrey\": [119,136,153,1], \"lightsteelblue\": [176,196,222,1],\n \"lightyellow\": [255,255,224,1], \"lime\": [0,255,0,1],\n \"limegreen\": [50,205,50,1], \"linen\": [250,240,230,1],\n \"magenta\": [255,0,255,1], \"maroon\": [128,0,0,1],\n \"mediumaquamarine\": [102,205,170,1], \"mediumblue\": [0,0,205,1],\n \"mediumorchid\": [186,85,211,1], \"mediumpurple\": [147,112,219,1],\n \"mediumseagreen\": [60,179,113,1], \"mediumslateblue\": [123,104,238,1],\n \"mediumspringgreen\": [0,250,154,1], \"mediumturquoise\": [72,209,204,1],\n \"mediumvioletred\": [199,21,133,1], \"midnightblue\": [25,25,112,1],\n \"mintcream\": [245,255,250,1], \"mistyrose\": [255,228,225,1],\n \"moccasin\": [255,228,181,1], \"navajowhite\": [255,222,173,1],\n \"navy\": [0,0,128,1], \"oldlace\": [253,245,230,1],\n \"olive\": [128,128,0,1], \"olivedrab\": [107,142,35,1],\n \"orange\": [255,165,0,1], \"orangered\": [255,69,0,1],\n \"orchid\": [218,112,214,1], \"palegoldenrod\": [238,232,170,1],\n \"palegreen\": [152,251,152,1], \"paleturquoise\": [175,238,238,1],\n \"palevioletred\": [219,112,147,1], \"papayawhip\": [255,239,213,1],\n \"peachpuff\": [255,218,185,1], \"peru\": [205,133,63,1],\n \"pink\": [255,192,203,1], \"plum\": [221,160,221,1],\n \"powderblue\": [176,224,230,1], \"purple\": [128,0,128,1],\n \"rebeccapurple\": [102,51,153,1],\n \"red\": [255,0,0,1], \"rosybrown\": [188,143,143,1],\n \"royalblue\": [65,105,225,1], \"saddlebrown\": [139,69,19,1],\n \"salmon\": [250,128,114,1], \"sandybrown\": [244,164,96,1],\n \"seagreen\": [46,139,87,1], \"seashell\": [255,245,238,1],\n \"sienna\": [160,82,45,1], \"silver\": [192,192,192,1],\n \"skyblue\": [135,206,235,1], \"slateblue\": [106,90,205,1],\n \"slategray\": [112,128,144,1], \"slategrey\": [112,128,144,1],\n \"snow\": [255,250,250,1], \"springgreen\": [0,255,127,1],\n \"steelblue\": [70,130,180,1], \"tan\": [210,180,140,1],\n \"teal\": [0,128,128,1], \"thistle\": [216,191,216,1],\n \"tomato\": [255,99,71,1], \"turquoise\": [64,224,208,1],\n \"violet\": [238,130,238,1], \"wheat\": [245,222,179,1],\n \"white\": [255,255,255,1], \"whitesmoke\": [245,245,245,1],\n \"yellow\": [255,255,0,1], \"yellowgreen\": [154,205,50,1]}\n\nfunction clamp_css_byte(i) { // Clamp to integer 0 .. 255.\n i = Math.round(i); // Seems to be what Chrome does (vs truncation).\n return i < 0 ? 0 : i > 255 ? 255 : i;\n}\n\nfunction clamp_css_float(f) { // Clamp to float 0.0 .. 1.0.\n return f < 0 ? 0 : f > 1 ? 1 : f;\n}\n\nfunction parse_css_int(str) { // int or percentage.\n if (str[str.length - 1] === '%')\n return clamp_css_byte(parseFloat(str) / 100 * 255);\n return clamp_css_byte(parseInt(str));\n}\n\nfunction parse_css_float(str) { // float or percentage.\n if (str[str.length - 1] === '%')\n return clamp_css_float(parseFloat(str) / 100);\n return clamp_css_float(parseFloat(str));\n}\n\nfunction css_hue_to_rgb(m1, m2, h) {\n if (h < 0) h += 1;\n else if (h > 1) h -= 1;\n\n if (h * 6 < 1) return m1 + (m2 - m1) * h * 6;\n if (h * 2 < 1) return m2;\n if (h * 3 < 2) return m1 + (m2 - m1) * (2/3 - h) * 6;\n return m1;\n}\n\nfunction parseCSSColor(css_str) {\n // Remove all whitespace, not compliant, but should just be more accepting.\n var str = css_str.replace(/ /g, '').toLowerCase();\n\n // Color keywords (and transparent) lookup.\n if (str in kCSSColorTable) return kCSSColorTable[str].slice(); // dup.\n\n // #abc and #abc123 syntax.\n if (str[0] === '#') {\n if (str.length === 4) {\n var iv = parseInt(str.substr(1), 16); // TODO(deanm): Stricter parsing.\n if (!(iv >= 0 && iv <= 0xfff)) return null; // Covers NaN.\n return [((iv & 0xf00) >> 4) | ((iv & 0xf00) >> 8),\n (iv & 0xf0) | ((iv & 0xf0) >> 4),\n (iv & 0xf) | ((iv & 0xf) << 4),\n 1];\n } else if (str.length === 7) {\n var iv = parseInt(str.substr(1), 16); // TODO(deanm): Stricter parsing.\n if (!(iv >= 0 && iv <= 0xffffff)) return null; // Covers NaN.\n return [(iv & 0xff0000) >> 16,\n (iv & 0xff00) >> 8,\n iv & 0xff,\n 1];\n }\n\n return null;\n }\n\n var op = str.indexOf('('), ep = str.indexOf(')');\n if (op !== -1 && ep + 1 === str.length) {\n var fname = str.substr(0, op);\n var params = str.substr(op+1, ep-(op+1)).split(',');\n var alpha = 1; // To allow case fallthrough.\n switch (fname) {\n case 'rgba':\n if (params.length !== 4) return null;\n alpha = parse_css_float(params.pop());\n // Fall through.\n case 'rgb':\n if (params.length !== 3) return null;\n return [parse_css_int(params[0]),\n parse_css_int(params[1]),\n parse_css_int(params[2]),\n alpha];\n case 'hsla':\n if (params.length !== 4) return null;\n alpha = parse_css_float(params.pop());\n // Fall through.\n case 'hsl':\n if (params.length !== 3) return null;\n var h = (((parseFloat(params[0]) % 360) + 360) % 360) / 360; // 0 .. 1\n // NOTE(deanm): According to the CSS spec s/l should only be\n // percentages, but we don't bother and let float or percentage.\n var s = parse_css_float(params[1]);\n var l = parse_css_float(params[2]);\n var m2 = l <= 0.5 ? l * (s + 1) : l + s - l * s;\n var m1 = l * 2 - m2;\n return [clamp_css_byte(css_hue_to_rgb(m1, m2, h+1/3) * 255),\n clamp_css_byte(css_hue_to_rgb(m1, m2, h) * 255),\n clamp_css_byte(css_hue_to_rgb(m1, m2, h-1/3) * 255),\n alpha];\n default:\n return null;\n }\n }\n\n return null;\n}\n\ntry { exports.parseCSSColor = parseCSSColor } catch(e) { }\n", "// @flow\n\nimport {parseCSSColor} from 'csscolorparser';\n\n/**\n * An RGBA color value. Create instances from color strings using the static\n * method `Color.parse`. The constructor accepts RGB channel values in the range\n * `[0, 1]`, premultiplied by A.\n *\n * @param {number} r The red channel.\n * @param {number} g The green channel.\n * @param {number} b The blue channel.\n * @param {number} a The alpha channel.\n * @private\n */\nclass Color {\n r: number;\n g: number;\n b: number;\n a: number;\n\n constructor(r: number, g: number, b: number, a: number = 1) {\n this.r = r;\n this.g = g;\n this.b = b;\n this.a = a;\n }\n\n static black: Color;\n static white: Color;\n static transparent: Color;\n static red: Color;\n\n /**\n * Parses valid CSS color strings and returns a `Color` instance.\n * @returns A `Color` instance, or `undefined` if the input is not a valid color string.\n */\n static parse(input?: string | Color | null): Color | void {\n if (!input) {\n return undefined;\n }\n\n if (input instanceof Color) {\n return input;\n }\n\n if (typeof input !== 'string') {\n return undefined;\n }\n\n const rgba = parseCSSColor(input);\n if (!rgba) {\n return undefined;\n }\n\n return new Color(\n rgba[0] / 255 * rgba[3],\n rgba[1] / 255 * rgba[3],\n rgba[2] / 255 * rgba[3],\n rgba[3]\n );\n }\n\n /**\n * Returns an RGBA string representing the color value.\n *\n * @returns An RGBA string.\n * @example\n * var purple = new Color.parse('purple');\n * purple.toString; // = \"rgba(128,0,128,1)\"\n * var translucentGreen = new Color.parse('rgba(26, 207, 26, .73)');\n * translucentGreen.toString(); // = \"rgba(26,207,26,0.73)\"\n */\n toString(): string {\n const [r, g, b, a] = this.toArray();\n return `rgba(${Math.round(r)},${Math.round(g)},${Math.round(b)},${a})`;\n }\n\n toArray(): [number, number, number, number] {\n const {r, g, b, a} = this;\n return a === 0 ? [0, 0, 0, 0] : [\n r * 255 / a,\n g * 255 / a,\n b * 255 / a,\n a\n ];\n }\n}\n\nColor.black = new Color(0, 0, 0, 1);\nColor.white = new Color(1, 1, 1, 1);\nColor.transparent = new Color(0, 0, 0, 0);\nColor.red = new Color(1, 0, 0, 1);\n\nexport default Color;\n", "// @flow\n\n// Flow type declarations for Intl cribbed from\n// https://github.com/facebook/flow/issues/1270\n\ndeclare var Intl: {\n Collator: Class\n};\n\ndeclare class Intl$Collator {\n constructor (\n locales?: string | string[],\n options?: CollatorOptions\n ): Intl$Collator;\n\n static (\n locales?: string | string[],\n options?: CollatorOptions\n ): Intl$Collator;\n\n compare (a: string, b: string): number;\n\n resolvedOptions(): any;\n}\n\ntype CollatorOptions = {\n localeMatcher?: 'lookup' | 'best fit',\n usage?: 'sort' | 'search',\n sensitivity?: 'base' | 'accent' | 'case' | 'variant',\n ignorePunctuation?: boolean,\n numeric?: boolean,\n caseFirst?: 'upper' | 'lower' | 'false'\n}\n\nexport default class Collator {\n locale: string | null;\n sensitivity: 'base' | 'accent' | 'case' | 'variant';\n collator: Intl$Collator;\n\n constructor(caseSensitive: boolean, diacriticSensitive: boolean, locale: string | null) {\n if (caseSensitive)\n this.sensitivity = diacriticSensitive ? 'variant' : 'case';\n else\n this.sensitivity = diacriticSensitive ? 'accent' : 'base';\n\n this.locale = locale;\n this.collator = new Intl.Collator(this.locale ? this.locale : [],\n {sensitivity: this.sensitivity, usage: 'search'});\n }\n\n compare(lhs: string, rhs: string): number {\n return this.collator.compare(lhs, rhs);\n }\n\n resolvedLocale(): string {\n // We create a Collator without \"usage: search\" because we don't want\n // the search options encoded in our result (e.g. \"en-u-co-search\")\n return new Intl.Collator(this.locale ? this.locale : [])\n .resolvedOptions().locale;\n }\n}\n", "// @flow\nimport type Color from '../../util/color';\nimport type ResolvedImage from '../types/resolved_image';\n\nexport class FormattedSection {\n text: string;\n image: ResolvedImage | null;\n scale: number | null;\n fontStack: string | null;\n textColor: Color | null;\n\n constructor(text: string, image: ResolvedImage | null, scale: number | null, fontStack: string | null, textColor: Color | null) {\n this.text = text;\n this.image = image;\n this.scale = scale;\n this.fontStack = fontStack;\n this.textColor = textColor;\n }\n}\n\nexport default class Formatted {\n sections: Array;\n\n constructor(sections: Array) {\n this.sections = sections;\n }\n\n static fromString(unformatted: string): Formatted {\n return new Formatted([new FormattedSection(unformatted, null, null, null, null)]);\n }\n\n isEmpty(): boolean {\n if (this.sections.length === 0) return true;\n return !this.sections.some(section => section.text.length !== 0 ||\n (section.image && section.image.name.length !== 0));\n }\n\n static factory(text: Formatted | string): Formatted {\n if (text instanceof Formatted) {\n return text;\n } else {\n return Formatted.fromString(text);\n }\n }\n\n toString(): string {\n if (this.sections.length === 0) return '';\n return this.sections.map(section => section.text).join('');\n }\n\n serialize(): Array {\n const serialized: Array = [\"format\"];\n for (const section of this.sections) {\n if (section.image) {\n serialized.push([\"image\", section.image.name]);\n continue;\n }\n serialized.push(section.text);\n const options: { [key: string]: mixed } = {};\n if (section.fontStack) {\n options[\"text-font\"] = [\"literal\", section.fontStack.split(',')];\n }\n if (section.scale) {\n options[\"font-scale\"] = section.scale;\n }\n if (section.textColor) {\n options[\"text-color\"] = ([\"rgba\"]: Array).concat(section.textColor.toArray());\n }\n serialized.push(options);\n }\n return serialized;\n }\n}\n", "// @flow\n\nexport type ResolvedImageOptions = {\n name: string,\n available: boolean\n};\n\nexport default class ResolvedImage {\n name: string;\n available: boolean;\n\n constructor(options: ResolvedImageOptions) {\n this.name = options.name;\n this.available = options.available;\n }\n\n toString(): string {\n return this.name;\n }\n\n static fromString(name: string): ResolvedImage | null {\n if (!name) return null; // treat empty values as no image\n return new ResolvedImage({name, available: false});\n }\n\n serialize(): Array {\n return [\"image\", this.name];\n }\n}\n", "// @flow\n\nimport assert from 'assert';\n\nimport Color from '../util/color';\nimport Collator from './types/collator';\nimport Formatted from './types/formatted';\nimport ResolvedImage from './types/resolved_image';\nimport {NullType, NumberType, StringType, BooleanType, ColorType, ObjectType, ValueType, CollatorType, FormattedType, ResolvedImageType, array} from './types';\n\nimport type {Type} from './types';\n\nexport function validateRGBA(r: mixed, g: mixed, b: mixed, a?: mixed): string | null {\n if (!(\n typeof r === 'number' && r >= 0 && r <= 255 &&\n typeof g === 'number' && g >= 0 && g <= 255 &&\n typeof b === 'number' && b >= 0 && b <= 255\n )) {\n const value = typeof a === 'number' ? [r, g, b, a] : [r, g, b];\n return `Invalid rgba value [${value.join(', ')}]: 'r', 'g', and 'b' must be between 0 and 255.`;\n }\n\n if (!(\n typeof a === 'undefined' || (typeof a === 'number' && a >= 0 && a <= 1)\n )) {\n return `Invalid rgba value [${[r, g, b, a].join(', ')}]: 'a' must be between 0 and 1.`;\n }\n\n return null;\n}\n\nexport type Value = null | string | boolean | number | Color | Collator | Formatted | ResolvedImage | $ReadOnlyArray | { +[string]: Value }\n\nexport function isValue(mixed: mixed): boolean {\n if (mixed === null) {\n return true;\n } else if (typeof mixed === 'string') {\n return true;\n } else if (typeof mixed === 'boolean') {\n return true;\n } else if (typeof mixed === 'number') {\n return true;\n } else if (mixed instanceof Color) {\n return true;\n } else if (mixed instanceof Collator) {\n return true;\n } else if (mixed instanceof Formatted) {\n return true;\n } else if (mixed instanceof ResolvedImage) {\n return true;\n } else if (Array.isArray(mixed)) {\n for (const item of mixed) {\n if (!isValue(item)) {\n return false;\n }\n }\n return true;\n } else if (typeof mixed === 'object') {\n for (const key in mixed) {\n if (!isValue(mixed[key])) {\n return false;\n }\n }\n return true;\n } else {\n return false;\n }\n}\n\nexport function typeOf(value: Value): Type {\n if (value === null) {\n return NullType;\n } else if (typeof value === 'string') {\n return StringType;\n } else if (typeof value === 'boolean') {\n return BooleanType;\n } else if (typeof value === 'number') {\n return NumberType;\n } else if (value instanceof Color) {\n return ColorType;\n } else if (value instanceof Collator) {\n return CollatorType;\n } else if (value instanceof Formatted) {\n return FormattedType;\n } else if (value instanceof ResolvedImage) {\n return ResolvedImageType;\n } else if (Array.isArray(value)) {\n const length = value.length;\n let itemType: Type | typeof undefined;\n\n for (const item of value) {\n const t = typeOf(item);\n if (!itemType) {\n itemType = t;\n } else if (itemType === t) {\n continue;\n } else {\n itemType = ValueType;\n break;\n }\n }\n\n return array(itemType || ValueType, length);\n } else {\n assert(typeof value === 'object');\n return ObjectType;\n }\n}\n\nexport function toString(value: Value) {\n const type = typeof value;\n if (value === null) {\n return '';\n } else if (type === 'string' || type === 'number' || type === 'boolean') {\n return String(value);\n } else if (value instanceof Color || value instanceof Formatted || value instanceof ResolvedImage) {\n return value.toString();\n } else {\n return JSON.stringify(value);\n }\n}\n\nexport {Color, Collator};\n", "// @flow\n\nimport assert from 'assert';\nimport {isValue, typeOf, Color} from '../values';\nimport Formatted from '../types/formatted';\n\nimport type {Type} from '../types';\nimport type {Value} from '../values';\nimport type {Expression} from '../expression';\nimport type ParsingContext from '../parsing_context';\n\nclass Literal implements Expression {\n type: Type;\n value: Value;\n\n constructor(type: Type, value: Value) {\n this.type = type;\n this.value = value;\n }\n\n static parse(args: $ReadOnlyArray, context: ParsingContext) {\n if (args.length !== 2)\n return context.error(`'literal' expression requires exactly one argument, but found ${args.length - 1} instead.`);\n\n if (!isValue(args[1]))\n return context.error(`invalid value`);\n\n const value = (args[1]: any);\n let type = typeOf(value);\n\n // special case: infer the item type if possible for zero-length arrays\n const expected = context.expectedType;\n if (\n type.kind === 'array' &&\n type.N === 0 &&\n expected &&\n expected.kind === 'array' &&\n (typeof expected.N !== 'number' || expected.N === 0)\n ) {\n type = expected;\n }\n\n return new Literal(type, value);\n }\n\n evaluate() {\n return this.value;\n }\n\n eachChild() {}\n\n outputDefined() {\n return true;\n }\n\n serialize(): Array {\n if (this.type.kind === 'array' || this.type.kind === 'object') {\n return [\"literal\", this.value];\n } else if (this.value instanceof Color) {\n // Constant-folding can generate Literal expressions that you\n // couldn't actually generate with a \"literal\" expression,\n // so we have to implement an equivalent serialization here\n return [\"rgba\"].concat(this.value.toArray());\n } else if (this.value instanceof Formatted) {\n // Same as Color\n return this.value.serialize();\n } else {\n assert(this.value === null ||\n typeof this.value === 'string' ||\n typeof this.value === 'number' ||\n typeof this.value === 'boolean');\n return (this.value: any);\n }\n }\n}\n\nexport default Literal;\n", "// @flow\n\nclass RuntimeError {\n name: string;\n message: string;\n\n constructor(message: string) {\n this.name = 'ExpressionEvaluationError';\n this.message = message;\n }\n\n toJSON() {\n return this.message;\n }\n}\n\nexport default RuntimeError;\n", "// @flow\n\nimport assert from 'assert';\n\nimport {\n ObjectType,\n ValueType,\n StringType,\n NumberType,\n BooleanType,\n checkSubtype,\n toString,\n array\n} from '../types';\nimport RuntimeError from '../runtime_error';\nimport {typeOf} from '../values';\n\nimport type {Expression} from '../expression';\nimport type ParsingContext from '../parsing_context';\nimport type EvaluationContext from '../evaluation_context';\nimport type {Type} from '../types';\n\nconst types = {\n string: StringType,\n number: NumberType,\n boolean: BooleanType,\n object: ObjectType\n};\n\nclass Assertion implements Expression {\n type: Type;\n args: Array;\n\n constructor(type: Type, args: Array) {\n this.type = type;\n this.args = args;\n }\n\n static parse(args: $ReadOnlyArray, context: ParsingContext): ?Expression {\n if (args.length < 2)\n return context.error(`Expected at least one argument.`);\n\n let i = 1;\n let type;\n\n const name: string = (args[0]: any);\n if (name === 'array') {\n let itemType;\n if (args.length > 2) {\n const type = args[1];\n if (typeof type !== 'string' || !(type in types) || type === 'object')\n return context.error('The item type argument of \"array\" must be one of string, number, boolean', 1);\n itemType = types[type];\n i++;\n } else {\n itemType = ValueType;\n }\n\n let N;\n if (args.length > 3) {\n if (args[2] !== null &&\n (typeof args[2] !== 'number' ||\n args[2] < 0 ||\n args[2] !== Math.floor(args[2]))\n ) {\n return context.error('The length argument to \"array\" must be a positive integer literal', 2);\n }\n N = args[2];\n i++;\n }\n\n type = array(itemType, N);\n } else {\n assert(types[name], name);\n type = types[name];\n }\n\n const parsed = [];\n for (; i < args.length; i++) {\n const input = context.parse(args[i], i, ValueType);\n if (!input) return null;\n parsed.push(input);\n }\n\n return new Assertion(type, parsed);\n }\n\n evaluate(ctx: EvaluationContext) {\n for (let i = 0; i < this.args.length; i++) {\n const value = this.args[i].evaluate(ctx);\n const error = checkSubtype(this.type, typeOf(value));\n if (!error) {\n return value;\n } else if (i === this.args.length - 1) {\n throw new RuntimeError(`Expected value to be of type ${toString(this.type)}, but found ${toString(typeOf(value))} instead.`);\n }\n }\n\n assert(false);\n return null;\n }\n\n eachChild(fn: (_: Expression) => void) {\n this.args.forEach(fn);\n }\n\n outputDefined(): boolean {\n return this.args.every(arg => arg.outputDefined());\n }\n\n serialize(): Array {\n const type = this.type;\n const serialized = [type.kind];\n if (type.kind === 'array') {\n const itemType = type.itemType;\n if (itemType.kind === 'string' ||\n itemType.kind === 'number' ||\n itemType.kind === 'boolean') {\n serialized.push(itemType.kind);\n const N = type.N;\n if (typeof N === 'number' || this.args.length > 1) {\n serialized.push(N);\n }\n }\n }\n return serialized.concat(this.args.map(arg => arg.serialize()));\n }\n}\n\nexport default Assertion;\n", "// @flow\n\nimport {NumberType, ValueType, FormattedType, array, StringType, ColorType, ResolvedImageType} from '../types';\nimport Formatted, {FormattedSection} from '../types/formatted';\nimport {toString, typeOf} from '../values';\n\nimport type {Expression} from '../expression';\nimport type EvaluationContext from '../evaluation_context';\nimport type ParsingContext from '../parsing_context';\nimport type {Type} from '../types';\n\ntype FormattedSectionExpression = {\n // Content of a section may be Image expression or other\n // type of expression that is coercable to 'string'.\n content: Expression,\n scale: Expression | null;\n font: Expression | null;\n textColor: Expression | null;\n}\n\nexport default class FormatExpression implements Expression {\n type: Type;\n sections: Array;\n\n constructor(sections: Array) {\n this.type = FormattedType;\n this.sections = sections;\n }\n\n static parse(args: $ReadOnlyArray, context: ParsingContext): ?Expression {\n if (args.length < 2) {\n return context.error(`Expected at least one argument.`);\n }\n\n const firstArg = args[1];\n if (!Array.isArray(firstArg) && typeof firstArg === 'object') {\n return context.error(`First argument must be an image or text section.`);\n }\n\n const sections: Array = [];\n let nextTokenMayBeObject = false;\n for (let i = 1; i <= args.length - 1; ++i) {\n const arg = (args[i]: any);\n\n if (nextTokenMayBeObject && typeof arg === \"object\" && !Array.isArray(arg)) {\n nextTokenMayBeObject = false;\n\n let scale = null;\n if (arg['font-scale']) {\n scale = context.parse(arg['font-scale'], 1, NumberType);\n if (!scale) return null;\n }\n\n let font = null;\n if (arg['text-font']) {\n font = context.parse(arg['text-font'], 1, array(StringType));\n if (!font) return null;\n }\n\n let textColor = null;\n if (arg['text-color']) {\n textColor = context.parse(arg['text-color'], 1, ColorType);\n if (!textColor) return null;\n }\n\n const lastExpression = sections[sections.length - 1];\n lastExpression.scale = scale;\n lastExpression.font = font;\n lastExpression.textColor = textColor;\n } else {\n const content = context.parse(args[i], 1, ValueType);\n if (!content) return null;\n\n const kind = content.type.kind;\n if (kind !== 'string' && kind !== 'value' && kind !== 'null' && kind !== 'resolvedImage')\n return context.error(`Formatted text type must be 'string', 'value', 'image' or 'null'.`);\n\n nextTokenMayBeObject = true;\n sections.push({content, scale: null, font: null, textColor: null});\n }\n }\n\n return new FormatExpression(sections);\n }\n\n evaluate(ctx: EvaluationContext) {\n const evaluateSection = section => {\n const evaluatedContent = section.content.evaluate(ctx);\n if (typeOf(evaluatedContent) === ResolvedImageType) {\n return new FormattedSection('', evaluatedContent, null, null, null);\n }\n\n return new FormattedSection(\n toString(evaluatedContent),\n null,\n section.scale ? section.scale.evaluate(ctx) : null,\n section.font ? section.font.evaluate(ctx).join(',') : null,\n section.textColor ? section.textColor.evaluate(ctx) : null\n );\n };\n\n return new Formatted(this.sections.map(evaluateSection));\n }\n\n eachChild(fn: (_: Expression) => void) {\n for (const section of this.sections) {\n fn(section.content);\n if (section.scale) {\n fn(section.scale);\n }\n if (section.font) {\n fn(section.font);\n }\n if (section.textColor) {\n fn(section.textColor);\n }\n }\n }\n\n outputDefined() {\n // Technically the combinatoric set of all children\n // Usually, this.text will be undefined anyway\n return false;\n }\n\n serialize() {\n const serialized = [\"format\"];\n for (const section of this.sections) {\n serialized.push(section.content.serialize());\n const options = {};\n if (section.scale) {\n options['font-scale'] = section.scale.serialize();\n }\n if (section.font) {\n options['text-font'] = section.font.serialize();\n }\n if (section.textColor) {\n options['text-color'] = section.textColor.serialize();\n }\n serialized.push(options);\n }\n return serialized;\n }\n}\n", "// @flow\n\nimport {ResolvedImageType, StringType} from '../types';\nimport ResolvedImage from '../types/resolved_image';\n\nimport type {Expression} from '../expression';\nimport type EvaluationContext from '../evaluation_context';\nimport type ParsingContext from '../parsing_context';\nimport type {Type} from '../types';\n\nexport default class ImageExpression implements Expression {\n type: Type;\n input: Expression;\n\n constructor(input: Expression) {\n this.type = ResolvedImageType;\n this.input = input;\n }\n\n static parse(args: $ReadOnlyArray, context: ParsingContext): ?Expression {\n if (args.length !== 2) {\n return context.error(`Expected two arguments.`);\n }\n\n const name = context.parse(args[1], 1, StringType);\n if (!name) return context.error(`No image name provided.`);\n\n return new ImageExpression(name);\n }\n\n evaluate(ctx: EvaluationContext) {\n const evaluatedImageName = this.input.evaluate(ctx);\n\n const value = ResolvedImage.fromString(evaluatedImageName);\n if (value && ctx.availableImages) value.available = ctx.availableImages.indexOf(evaluatedImageName) > -1;\n\n return value;\n }\n\n eachChild(fn: (_: Expression) => void) {\n fn(this.input);\n }\n\n outputDefined() {\n // The output of image is determined by the list of available images in the evaluation context\n return false;\n }\n\n serialize() {\n return [\"image\", this.input.serialize()];\n }\n}\n", "// @flow\n\nimport assert from 'assert';\n\nimport {BooleanType, ColorType, NumberType, StringType, ValueType} from '../types';\nimport {Color, toString as valueToString, validateRGBA} from '../values';\nimport RuntimeError from '../runtime_error';\nimport Formatted from '../types/formatted';\nimport FormatExpression from '../definitions/format';\nimport ImageExpression from '../definitions/image';\nimport ResolvedImage from '../types/resolved_image';\n\nimport type {Expression} from '../expression';\nimport type ParsingContext from '../parsing_context';\nimport type EvaluationContext from '../evaluation_context';\nimport type {Type} from '../types';\n\nconst types = {\n 'to-boolean': BooleanType,\n 'to-color': ColorType,\n 'to-number': NumberType,\n 'to-string': StringType\n};\n\n/**\n * Special form for error-coalescing coercion expressions \"to-number\",\n * \"to-color\". Since these coercions can fail at runtime, they accept multiple\n * arguments, only evaluating one at a time until one succeeds.\n *\n * @private\n */\nclass Coercion implements Expression {\n type: Type;\n args: Array;\n\n constructor(type: Type, args: Array) {\n this.type = type;\n this.args = args;\n }\n\n static parse(args: $ReadOnlyArray, context: ParsingContext): ?Expression {\n if (args.length < 2)\n return context.error(`Expected at least one argument.`);\n\n const name: string = (args[0]: any);\n assert(types[name], name);\n\n if ((name === 'to-boolean' || name === 'to-string') && args.length !== 2)\n return context.error(`Expected one argument.`);\n\n const type = types[name];\n\n const parsed = [];\n for (let i = 1; i < args.length; i++) {\n const input = context.parse(args[i], i, ValueType);\n if (!input) return null;\n parsed.push(input);\n }\n\n return new Coercion(type, parsed);\n }\n\n evaluate(ctx: EvaluationContext) {\n if (this.type.kind === 'boolean') {\n return Boolean(this.args[0].evaluate(ctx));\n } else if (this.type.kind === 'color') {\n let input;\n let error;\n for (const arg of this.args) {\n input = arg.evaluate(ctx);\n error = null;\n if (input instanceof Color) {\n return input;\n } else if (typeof input === 'string') {\n const c = ctx.parseColor(input);\n if (c) return c;\n } else if (Array.isArray(input)) {\n if (input.length < 3 || input.length > 4) {\n error = `Invalid rbga value ${JSON.stringify(input)}: expected an array containing either three or four numeric values.`;\n } else {\n error = validateRGBA(input[0], input[1], input[2], input[3]);\n }\n if (!error) {\n return new Color((input[0]: any) / 255, (input[1]: any) / 255, (input[2]: any) / 255, (input[3]: any));\n }\n }\n }\n throw new RuntimeError(error || `Could not parse color from value '${typeof input === 'string' ? input : String(JSON.stringify(input))}'`);\n } else if (this.type.kind === 'number') {\n let value = null;\n for (const arg of this.args) {\n value = arg.evaluate(ctx);\n if (value === null) return 0;\n const num = Number(value);\n if (isNaN(num)) continue;\n return num;\n }\n throw new RuntimeError(`Could not convert ${JSON.stringify(value)} to number.`);\n } else if (this.type.kind === 'formatted') {\n // There is no explicit 'to-formatted' but this coercion can be implicitly\n // created by properties that expect the 'formatted' type.\n return Formatted.fromString(valueToString(this.args[0].evaluate(ctx)));\n } else if (this.type.kind === 'resolvedImage') {\n return ResolvedImage.fromString(valueToString(this.args[0].evaluate(ctx)));\n } else {\n return valueToString(this.args[0].evaluate(ctx));\n }\n }\n\n eachChild(fn: (_: Expression) => void) {\n this.args.forEach(fn);\n }\n\n outputDefined(): boolean {\n return this.args.every(arg => arg.outputDefined());\n }\n\n serialize() {\n if (this.type.kind === 'formatted') {\n return new FormatExpression([{content: this.args[0], scale: null, font: null, textColor: null}]).serialize();\n }\n\n if (this.type.kind === 'resolvedImage') {\n return new ImageExpression(this.args[0]).serialize();\n }\n\n const serialized = [`to-${this.type.kind}`];\n this.eachChild(child => { serialized.push(child.serialize()); });\n return serialized;\n }\n}\n\nexport default Coercion;\n", "// @flow\n\nimport {Color} from './values';\nimport type {FormattedSection} from './types/formatted';\nimport type {GlobalProperties, Feature, FeatureState} from './index';\nimport type {CanonicalTileID} from '../../source/tile_id';\n\nconst geometryTypes = ['Unknown', 'Point', 'LineString', 'Polygon'];\n\nclass EvaluationContext {\n globals: GlobalProperties;\n feature: ?Feature;\n featureState: ?FeatureState;\n formattedSection: ?FormattedSection;\n availableImages: ?Array;\n canonical: ?CanonicalTileID;\n\n _parseColorCache: {[_: string]: ?Color};\n\n constructor() {\n this.globals = (null: any);\n this.feature = null;\n this.featureState = null;\n this.formattedSection = null;\n this._parseColorCache = {};\n this.availableImages = null;\n this.canonical = null;\n }\n\n id() {\n return this.feature && 'id' in this.feature ? this.feature.id : null;\n }\n\n geometryType() {\n return this.feature ? typeof this.feature.type === 'number' ? geometryTypes[this.feature.type] : this.feature.type : null;\n }\n\n geometry() {\n return this.feature && 'geometry' in this.feature ? this.feature.geometry : null;\n }\n\n canonicalID() {\n return this.canonical;\n }\n\n properties() {\n return this.feature && this.feature.properties || {};\n }\n\n parseColor(input: string): ?Color {\n let cached = this._parseColorCache[input];\n if (!cached) {\n cached = this._parseColorCache[input] = Color.parse(input);\n }\n return cached;\n }\n}\n\nexport default EvaluationContext;\n", "// @flow\n\nimport {toString} from './types';\n\nimport ParsingContext from './parsing_context';\nimport EvaluationContext from './evaluation_context';\nimport assert from 'assert';\n\nimport type {Expression, ExpressionRegistry} from './expression';\nimport type {Type} from './types';\nimport type {Value} from './values';\n\nexport type Varargs = {| type: Type |};\ntype Signature = Array | Varargs;\ntype Evaluate = (EvaluationContext, Array) => Value;\ntype Definition = [Type, Signature, Evaluate] |\n {|type: Type, overloads: Array<[Signature, Evaluate]>|};\n\nclass CompoundExpression implements Expression {\n name: string;\n type: Type;\n _evaluate: Evaluate;\n args: Array;\n\n static definitions: {[_: string]: Definition };\n\n constructor(name: string, type: Type, evaluate: Evaluate, args: Array) {\n this.name = name;\n this.type = type;\n this._evaluate = evaluate;\n this.args = args;\n }\n\n evaluate(ctx: EvaluationContext) {\n return this._evaluate(ctx, this.args);\n }\n\n eachChild(fn: (_: Expression) => void) {\n this.args.forEach(fn);\n }\n\n outputDefined() {\n return false;\n }\n\n serialize(): Array {\n return [this.name].concat(this.args.map(arg => arg.serialize()));\n }\n\n static parse(args: $ReadOnlyArray, context: ParsingContext): ?Expression {\n const op: string = (args[0]: any);\n const definition = CompoundExpression.definitions[op];\n if (!definition) {\n return context.error(`Unknown expression \"${op}\". If you wanted a literal array, use [\"literal\", [...]].`, 0);\n }\n\n // Now check argument types against each signature\n const type = Array.isArray(definition) ?\n definition[0] : definition.type;\n\n const availableOverloads = Array.isArray(definition) ?\n [[definition[1], definition[2]]] :\n definition.overloads;\n\n const overloads = availableOverloads.filter(([signature]) => (\n !Array.isArray(signature) || // varags\n signature.length === args.length - 1 // correct param count\n ));\n\n let signatureContext: ParsingContext = (null: any);\n\n for (const [params, evaluate] of overloads) {\n // Use a fresh context for each attempted signature so that, if\n // we eventually succeed, we haven't polluted `context.errors`.\n signatureContext = new ParsingContext(context.registry, context.path, null, context.scope);\n\n // First parse all the args, potentially coercing to the\n // types expected by this overload.\n const parsedArgs: Array = [];\n let argParseFailed = false;\n for (let i = 1; i < args.length; i++) {\n const arg = args[i];\n const expectedType = Array.isArray(params) ?\n params[i - 1] :\n params.type;\n\n const parsed = signatureContext.parse(arg, 1 + parsedArgs.length, expectedType);\n if (!parsed) {\n argParseFailed = true;\n break;\n }\n parsedArgs.push(parsed);\n }\n if (argParseFailed) {\n // Couldn't coerce args of this overload to expected type, move\n // on to next one.\n continue;\n }\n\n if (Array.isArray(params)) {\n if (params.length !== parsedArgs.length) {\n signatureContext.error(`Expected ${params.length} arguments, but found ${parsedArgs.length} instead.`);\n continue;\n }\n }\n\n for (let i = 0; i < parsedArgs.length; i++) {\n const expected = Array.isArray(params) ? params[i] : params.type;\n const arg = parsedArgs[i];\n signatureContext.concat(i + 1).checkSubtype(expected, arg.type);\n }\n\n if (signatureContext.errors.length === 0) {\n return new CompoundExpression(op, type, evaluate, parsedArgs);\n }\n }\n\n assert(!signatureContext || signatureContext.errors.length > 0);\n\n if (overloads.length === 1) {\n context.errors.push(...signatureContext.errors);\n } else {\n const expected = overloads.length ? overloads : availableOverloads;\n const signatures = expected\n .map(([params]) => stringifySignature(params))\n .join(' | ');\n\n const actualTypes = [];\n // For error message, re-parse arguments without trying to\n // apply any coercions\n for (let i = 1; i < args.length; i++) {\n const parsed = context.parse(args[i], 1 + actualTypes.length);\n if (!parsed) return null;\n actualTypes.push(toString(parsed.type));\n }\n context.error(`Expected arguments of type ${signatures}, but found (${actualTypes.join(', ')}) instead.`);\n }\n\n return null;\n }\n\n static register(\n registry: ExpressionRegistry,\n definitions: {[_: string]: Definition }\n ) {\n assert(!CompoundExpression.definitions);\n CompoundExpression.definitions = definitions;\n for (const name in definitions) {\n registry[name] = CompoundExpression;\n }\n }\n}\n\nfunction stringifySignature(signature: Signature): string {\n if (Array.isArray(signature)) {\n return `(${signature.map(toString).join(', ')})`;\n } else {\n return `(${toString(signature.type)}...)`;\n }\n}\n\nexport default CompoundExpression;\n", "// @flow\n\nimport {StringType, BooleanType, CollatorType} from '../types';\nimport Collator from '../types/collator';\n\nimport type {Expression} from '../expression';\nimport type EvaluationContext from '../evaluation_context';\nimport type ParsingContext from '../parsing_context';\nimport type {Type} from '../types';\n\nexport default class CollatorExpression implements Expression {\n type: Type;\n caseSensitive: Expression;\n diacriticSensitive: Expression;\n locale: Expression | null;\n\n constructor(caseSensitive: Expression, diacriticSensitive: Expression, locale: Expression | null) {\n this.type = CollatorType;\n this.locale = locale;\n this.caseSensitive = caseSensitive;\n this.diacriticSensitive = diacriticSensitive;\n }\n\n static parse(args: $ReadOnlyArray, context: ParsingContext): ?Expression {\n if (args.length !== 2)\n return context.error(`Expected one argument.`);\n\n const options = (args[1]: any);\n if (typeof options !== \"object\" || Array.isArray(options))\n return context.error(`Collator options argument must be an object.`);\n\n const caseSensitive = context.parse(\n options['case-sensitive'] === undefined ? false : options['case-sensitive'], 1, BooleanType);\n if (!caseSensitive) return null;\n\n const diacriticSensitive = context.parse(\n options['diacritic-sensitive'] === undefined ? false : options['diacritic-sensitive'], 1, BooleanType);\n if (!diacriticSensitive) return null;\n\n let locale = null;\n if (options['locale']) {\n locale = context.parse(options['locale'], 1, StringType);\n if (!locale) return null;\n }\n\n return new CollatorExpression(caseSensitive, diacriticSensitive, locale);\n }\n\n evaluate(ctx: EvaluationContext) {\n return new Collator(this.caseSensitive.evaluate(ctx), this.diacriticSensitive.evaluate(ctx), this.locale ? this.locale.evaluate(ctx) : null);\n }\n\n eachChild(fn: (_: Expression) => void) {\n fn(this.caseSensitive);\n fn(this.diacriticSensitive);\n if (this.locale) {\n fn(this.locale);\n }\n }\n\n outputDefined() {\n // Technically the set of possible outputs is the combinatoric set of Collators produced\n // by all possible outputs of locale/caseSensitive/diacriticSensitive\n // But for the primary use of Collators in comparison operators, we ignore the Collator's\n // possible outputs anyway, so we can get away with leaving this false for now.\n return false;\n }\n\n serialize() {\n const options = {};\n options['case-sensitive'] = this.caseSensitive.serialize();\n options['diacritic-sensitive'] = this.diacriticSensitive.serialize();\n if (this.locale) {\n options['locale'] = this.locale.serialize();\n }\n return [\"collator\", options];\n }\n}\n", "// @flow\n\nimport {isValue} from '../values';\nimport type {Type} from '../types';\nimport {BooleanType} from '../types';\nimport type {Expression} from '../expression';\nimport type ParsingContext from '../parsing_context';\nimport type EvaluationContext from '../evaluation_context';\nimport type {GeoJSON, GeoJSONPolygon, GeoJSONMultiPolygon} from '@mapbox/geojson-types';\nimport Point from '@mapbox/point-geometry';\nimport type {CanonicalTileID} from '../../../source/tile_id';\n\ntype GeoJSONPolygons =| GeoJSONPolygon | GeoJSONMultiPolygon;\n\n// minX, minY, maxX, maxY\ntype BBox = [number, number, number, number];\nconst EXTENT = 8192;\n\nfunction updateBBox(bbox: BBox, coord: Point) {\n bbox[0] = Math.min(bbox[0], coord[0]);\n bbox[1] = Math.min(bbox[1], coord[1]);\n bbox[2] = Math.max(bbox[2], coord[0]);\n bbox[3] = Math.max(bbox[3], coord[1]);\n}\n\nfunction mercatorXfromLng(lng: number) {\n return (180 + lng) / 360;\n}\n\nfunction mercatorYfromLat(lat: number) {\n return (180 - (180 / Math.PI * Math.log(Math.tan(Math.PI / 4 + lat * Math.PI / 360)))) / 360;\n}\n\nfunction boxWithinBox(bbox1: BBox, bbox2: BBox) {\n if (bbox1[0] <= bbox2[0]) return false;\n if (bbox1[2] >= bbox2[2]) return false;\n if (bbox1[1] <= bbox2[1]) return false;\n if (bbox1[3] >= bbox2[3]) return false;\n return true;\n}\n\nfunction getTileCoordinates(p, canonical: CanonicalTileID) {\n const x = mercatorXfromLng(p[0]);\n const y = mercatorYfromLat(p[1]);\n const tilesAtZoom = Math.pow(2, canonical.z);\n return [Math.round(x * tilesAtZoom * EXTENT), Math.round(y * tilesAtZoom * EXTENT)];\n}\n\nfunction onBoundary(p, p1, p2) {\n const x1 = p[0] - p1[0];\n const y1 = p[1] - p1[1];\n const x2 = p[0] - p2[0];\n const y2 = p[1] - p2[1];\n return (x1 * y2 - x2 * y1 === 0) && (x1 * x2 <= 0) && (y1 * y2 <= 0);\n}\n\nfunction rayIntersect(p, p1, p2) {\n return ((p1[1] > p[1]) !== (p2[1] > p[1])) && (p[0] < (p2[0] - p1[0]) * (p[1] - p1[1]) / (p2[1] - p1[1]) + p1[0]);\n}\n\n// ray casting algorithm for detecting if point is in polygon\nfunction pointWithinPolygon(point, rings) {\n let inside = false;\n for (let i = 0, len = rings.length; i < len; i++) {\n const ring = rings[i];\n for (let j = 0, len2 = ring.length; j < len2 - 1; j++) {\n if (onBoundary(point, ring[j], ring[j + 1])) return false;\n if (rayIntersect(point, ring[j], ring[j + 1])) inside = !inside;\n }\n }\n return inside;\n}\n\nfunction pointWithinPolygons(point, polygons) {\n for (let i = 0; i < polygons.length; i++) {\n if (pointWithinPolygon(point, polygons[i])) return true;\n }\n return false;\n}\n\nfunction perp(v1, v2) {\n return (v1[0] * v2[1] - v1[1] * v2[0]);\n}\n\n// check if p1 and p2 are in different sides of line segment q1->q2\nfunction twoSided(p1, p2, q1, q2) {\n // q1->p1 (x1, y1), q1->p2 (x2, y2), q1->q2 (x3, y3)\n const x1 = p1[0] - q1[0];\n const y1 = p1[1] - q1[1];\n const x2 = p2[0] - q1[0];\n const y2 = p2[1] - q1[1];\n const x3 = q2[0] - q1[0];\n const y3 = q2[1] - q1[1];\n const det1 = (x1 * y3 - x3 * y1);\n const det2 = (x2 * y3 - x3 * y2);\n if ((det1 > 0 && det2 < 0) || (det1 < 0 && det2 > 0)) return true;\n return false;\n}\n// a, b are end points for line segment1, c and d are end points for line segment2\nfunction lineIntersectLine(a, b, c, d) {\n // check if two segments are parallel or not\n // precondition is end point a, b is inside polygon, if line a->b is\n // parallel to polygon edge c->d, then a->b won't intersect with c->d\n const vectorP = [b[0] - a[0], b[1] - a[1]];\n const vectorQ = [d[0] - c[0], d[1] - c[1]];\n if (perp(vectorQ, vectorP) === 0) return false;\n\n // If lines are intersecting with each other, the relative location should be:\n // a and b lie in different sides of segment c->d\n // c and d lie in different sides of segment a->b\n if (twoSided(a, b, c, d) && twoSided(c, d, a, b)) return true;\n return false;\n}\n\nfunction lineIntersectPolygon(p1, p2, polygon) {\n for (const ring of polygon) {\n // loop through every edge of the ring\n for (let j = 0; j < ring.length - 1; ++j) {\n if (lineIntersectLine(p1, p2, ring[j], ring[j + 1])) {\n return true;\n }\n }\n }\n return false;\n}\n\nfunction lineStringWithinPolygon(line, polygon) {\n // First, check if geometry points of line segments are all inside polygon\n for (let i = 0; i < line.length; ++i) {\n if (!pointWithinPolygon(line[i], polygon)) {\n return false;\n }\n }\n\n // Second, check if there is line segment intersecting polygon edge\n for (let i = 0; i < line.length - 1; ++i) {\n if (lineIntersectPolygon(line[i], line[i + 1], polygon)) {\n return false;\n }\n }\n return true;\n}\n\nfunction lineStringWithinPolygons(line, polygons) {\n for (let i = 0; i < polygons.length; i++) {\n if (lineStringWithinPolygon(line, polygons[i])) return true;\n }\n return false;\n}\n\nfunction getTilePolygon(coordinates, bbox, canonical) {\n const polygon = [];\n for (let i = 0; i < coordinates.length; i++) {\n const ring = [];\n for (let j = 0; j < coordinates[i].length; j++) {\n const coord = getTileCoordinates(coordinates[i][j], canonical);\n updateBBox(bbox, coord);\n ring.push(coord);\n }\n polygon.push(ring);\n }\n return polygon;\n}\n\nfunction getTilePolygons(coordinates, bbox, canonical) {\n const polygons = [];\n for (let i = 0; i < coordinates.length; i++) {\n const polygon = getTilePolygon(coordinates[i], bbox, canonical);\n polygons.push(polygon);\n }\n return polygons;\n}\n\nfunction updatePoint(p, bbox, polyBBox, worldSize) {\n if (p[0] < polyBBox[0] || p[0] > polyBBox[2]) {\n const halfWorldSize = worldSize * 0.5;\n let shift = (p[0] - polyBBox[0] > halfWorldSize) ? -worldSize : (polyBBox[0] - p[0] > halfWorldSize) ? worldSize : 0;\n if (shift === 0) {\n shift = (p[0] - polyBBox[2] > halfWorldSize) ? -worldSize : (polyBBox[2] - p[0] > halfWorldSize) ? worldSize : 0;\n }\n p[0] += shift;\n }\n updateBBox(bbox, p);\n}\n\nfunction resetBBox(bbox) {\n bbox[0] = bbox[1] = Infinity;\n bbox[2] = bbox[3] = -Infinity;\n}\n\nfunction getTilePoints(geometry, pointBBox, polyBBox, canonical) {\n const worldSize = Math.pow(2, canonical.z) * EXTENT;\n const shifts = [canonical.x * EXTENT, canonical.y * EXTENT];\n const tilePoints = [];\n for (const points of geometry) {\n for (const point of points) {\n const p = [point.x + shifts[0], point.y + shifts[1]];\n updatePoint(p, pointBBox, polyBBox, worldSize);\n tilePoints.push(p);\n }\n }\n return tilePoints;\n}\n\nfunction getTileLines(geometry, lineBBox, polyBBox, canonical) {\n const worldSize = Math.pow(2, canonical.z) * EXTENT;\n const shifts = [canonical.x * EXTENT, canonical.y * EXTENT];\n const tileLines = [];\n for (const line of geometry) {\n const tileLine = [];\n for (const point of line) {\n const p = [point.x + shifts[0], point.y + shifts[1]];\n updateBBox(lineBBox, p);\n tileLine.push(p);\n }\n tileLines.push(tileLine);\n }\n if (lineBBox[2] - lineBBox[0] <= worldSize / 2) {\n resetBBox(lineBBox);\n for (const line of tileLines) {\n for (const p of line) {\n updatePoint(p, lineBBox, polyBBox, worldSize);\n }\n }\n }\n return tileLines;\n}\n\nfunction pointsWithinPolygons(ctx: EvaluationContext, polygonGeometry: GeoJSONPolygons) {\n const pointBBox = [Infinity, Infinity, -Infinity, -Infinity];\n const polyBBox = [Infinity, Infinity, -Infinity, -Infinity];\n\n const canonical = ctx.canonicalID();\n\n if (polygonGeometry.type === 'Polygon') {\n const tilePolygon = getTilePolygon(polygonGeometry.coordinates, polyBBox, canonical);\n const tilePoints = getTilePoints(ctx.geometry(), pointBBox, polyBBox, canonical);\n if (!boxWithinBox(pointBBox, polyBBox)) return false;\n\n for (const point of tilePoints) {\n if (!pointWithinPolygon(point, tilePolygon)) return false;\n }\n }\n if (polygonGeometry.type === 'MultiPolygon') {\n const tilePolygons = getTilePolygons(polygonGeometry.coordinates, polyBBox, canonical);\n const tilePoints = getTilePoints(ctx.geometry(), pointBBox, polyBBox, canonical);\n if (!boxWithinBox(pointBBox, polyBBox)) return false;\n\n for (const point of tilePoints) {\n if (!pointWithinPolygons(point, tilePolygons)) return false;\n }\n }\n\n return true;\n}\n\nfunction linesWithinPolygons(ctx: EvaluationContext, polygonGeometry: GeoJSONPolygons) {\n const lineBBox = [Infinity, Infinity, -Infinity, -Infinity];\n const polyBBox = [Infinity, Infinity, -Infinity, -Infinity];\n\n const canonical = ctx.canonicalID();\n\n if (polygonGeometry.type === 'Polygon') {\n const tilePolygon = getTilePolygon(polygonGeometry.coordinates, polyBBox, canonical);\n const tileLines = getTileLines(ctx.geometry(), lineBBox, polyBBox, canonical);\n if (!boxWithinBox(lineBBox, polyBBox)) return false;\n\n for (const line of tileLines) {\n if (!lineStringWithinPolygon(line, tilePolygon)) return false;\n }\n }\n if (polygonGeometry.type === 'MultiPolygon') {\n const tilePolygons = getTilePolygons(polygonGeometry.coordinates, polyBBox, canonical);\n const tileLines = getTileLines(ctx.geometry(), lineBBox, polyBBox, canonical);\n if (!boxWithinBox(lineBBox, polyBBox)) return false;\n\n for (const line of tileLines) {\n if (!lineStringWithinPolygons(line, tilePolygons)) return false;\n }\n }\n return true;\n}\n\nclass Within implements Expression {\n type: Type;\n geojson: GeoJSON\n geometries: GeoJSONPolygons;\n\n constructor(geojson: GeoJSON, geometries: GeoJSONPolygons) {\n this.type = BooleanType;\n this.geojson = geojson;\n this.geometries = geometries;\n }\n\n static parse(args: $ReadOnlyArray, context: ParsingContext) {\n if (args.length !== 2)\n return context.error(`'within' expression requires exactly one argument, but found ${args.length - 1} instead.`);\n if (isValue(args[1])) {\n const geojson = (args[1]: Object);\n if (geojson.type === 'FeatureCollection') {\n for (let i = 0; i < geojson.features.length; ++i) {\n const type = geojson.features[i].geometry.type;\n if (type === 'Polygon' || type === 'MultiPolygon') {\n return new Within(geojson, geojson.features[i].geometry);\n }\n }\n } else if (geojson.type === 'Feature') {\n const type = geojson.geometry.type;\n if (type === 'Polygon' || type === 'MultiPolygon') {\n return new Within(geojson, geojson.geometry);\n }\n } else if (geojson.type === 'Polygon' || geojson.type === 'MultiPolygon') {\n return new Within(geojson, geojson);\n }\n }\n return context.error(`'within' expression requires valid geojson object that contains polygon geometry type.`);\n }\n\n evaluate(ctx: EvaluationContext) {\n if (ctx.geometry() != null && ctx.canonicalID() != null) {\n if (ctx.geometryType() === 'Point') {\n return pointsWithinPolygons(ctx, this.geometries);\n } else if (ctx.geometryType() === 'LineString') {\n return linesWithinPolygons(ctx, this.geometries);\n }\n }\n return false;\n }\n\n eachChild() {}\n\n outputDefined(): boolean {\n return true;\n }\n\n serialize(): Array {\n return [\"within\", this.geojson];\n }\n\n}\n\nexport default Within;\n", "// @flow\n\nimport CompoundExpression from './compound_expression';\nimport Within from './definitions/within';\nimport type {Expression} from './expression.js';\n\nfunction isFeatureConstant(e: Expression) {\n if (e instanceof CompoundExpression) {\n if (e.name === 'get' && e.args.length === 1) {\n return false;\n } else if (e.name === 'feature-state') {\n return false;\n } else if (e.name === 'has' && e.args.length === 1) {\n return false;\n } else if (\n e.name === 'properties' ||\n e.name === 'geometry-type' ||\n e.name === 'id'\n ) {\n return false;\n } else if (/^filter-/.test(e.name)) {\n return false;\n }\n }\n\n if (e instanceof Within) {\n return false;\n }\n\n let result = true;\n e.eachChild(arg => {\n if (result && !isFeatureConstant(arg)) { result = false; }\n });\n return result;\n}\n\nfunction isStateConstant(e: Expression) {\n if (e instanceof CompoundExpression) {\n if (e.name === 'feature-state') {\n return false;\n }\n }\n let result = true;\n e.eachChild(arg => {\n if (result && !isStateConstant(arg)) { result = false; }\n });\n return result;\n}\n\nfunction isGlobalPropertyConstant(e: Expression, properties: Array) {\n if (e instanceof CompoundExpression && properties.indexOf(e.name) >= 0) { return false; }\n let result = true;\n e.eachChild((arg) => {\n if (result && !isGlobalPropertyConstant(arg, properties)) { result = false; }\n });\n return result;\n}\n\nexport {isFeatureConstant, isGlobalPropertyConstant, isStateConstant};\n", "// @flow\n\nimport type {Type} from '../types';\nimport type {Expression} from '../expression';\nimport type ParsingContext from '../parsing_context';\nimport type EvaluationContext from '../evaluation_context';\n\nclass Var implements Expression {\n type: Type;\n name: string;\n boundExpression: Expression;\n\n constructor(name: string, boundExpression: Expression) {\n this.type = boundExpression.type;\n this.name = name;\n this.boundExpression = boundExpression;\n }\n\n static parse(args: $ReadOnlyArray, context: ParsingContext) {\n if (args.length !== 2 || typeof args[1] !== 'string')\n return context.error(`'var' expression requires exactly one string literal argument.`);\n\n const name = args[1];\n if (!context.scope.has(name)) {\n return context.error(`Unknown variable \"${name}\". Make sure \"${name}\" has been bound in an enclosing \"let\" expression before using it.`, 1);\n }\n\n return new Var(name, context.scope.get(name));\n }\n\n evaluate(ctx: EvaluationContext) {\n return this.boundExpression.evaluate(ctx);\n }\n\n eachChild() {}\n\n outputDefined() {\n return false;\n }\n\n serialize() {\n return [\"var\", this.name];\n }\n}\n\nexport default Var;\n", "// @flow\n\nimport Scope from './scope';\nimport {checkSubtype} from './types';\nimport ParsingError from './parsing_error';\nimport Literal from './definitions/literal';\nimport Assertion from './definitions/assertion';\nimport Coercion from './definitions/coercion';\nimport EvaluationContext from './evaluation_context';\nimport CompoundExpression from './compound_expression';\nimport CollatorExpression from './definitions/collator';\nimport Within from './definitions/within';\nimport {isGlobalPropertyConstant, isFeatureConstant} from './is_constant';\nimport Var from './definitions/var';\n\nimport type {Expression, ExpressionRegistry} from './expression';\nimport type {Type} from './types';\n\n/**\n * State associated parsing at a given point in an expression tree.\n * @private\n */\nclass ParsingContext {\n registry: ExpressionRegistry;\n path: Array;\n key: string;\n scope: Scope;\n errors: Array;\n\n // The expected type of this expression. Provided only to allow Expression\n // implementations to infer argument types: Expression#parse() need not\n // check that the output type of the parsed expression matches\n // `expectedType`.\n expectedType: ?Type;\n\n constructor(\n registry: ExpressionRegistry,\n path: Array = [],\n expectedType: ?Type,\n scope: Scope = new Scope(),\n errors: Array = []\n ) {\n this.registry = registry;\n this.path = path;\n this.key = path.map(part => `[${part}]`).join('');\n this.scope = scope;\n this.errors = errors;\n this.expectedType = expectedType;\n }\n\n /**\n * @param expr the JSON expression to parse\n * @param index the optional argument index if this expression is an argument of a parent expression that's being parsed\n * @param options\n * @param options.omitTypeAnnotations set true to omit inferred type annotations. Caller beware: with this option set, the parsed expression's type will NOT satisfy `expectedType` if it would normally be wrapped in an inferred annotation.\n * @private\n */\n parse(\n expr: mixed,\n index?: number,\n expectedType?: ?Type,\n bindings?: Array<[string, Expression]>,\n options: {typeAnnotation?: 'assert' | 'coerce' | 'omit'} = {}\n ): ?Expression {\n if (index) {\n return this.concat(index, expectedType, bindings)._parse(expr, options);\n }\n return this._parse(expr, options);\n }\n\n _parse(expr: mixed, options: {typeAnnotation?: 'assert' | 'coerce' | 'omit'}): ?Expression {\n if (expr === null || typeof expr === 'string' || typeof expr === 'boolean' || typeof expr === 'number') {\n expr = ['literal', expr];\n }\n\n function annotate(parsed, type, typeAnnotation: 'assert' | 'coerce' | 'omit') {\n if (typeAnnotation === 'assert') {\n return new Assertion(type, [parsed]);\n } else if (typeAnnotation === 'coerce') {\n return new Coercion(type, [parsed]);\n } else {\n return parsed;\n }\n }\n\n if (Array.isArray(expr)) {\n if (expr.length === 0) {\n return this.error(`Expected an array with at least one element. If you wanted a literal array, use [\"literal\", []].`);\n }\n\n const op = expr[0];\n if (typeof op !== 'string') {\n this.error(`Expression name must be a string, but found ${typeof op} instead. If you wanted a literal array, use [\"literal\", [...]].`, 0);\n return null;\n }\n\n const Expr = this.registry[op];\n if (Expr) {\n let parsed = Expr.parse(expr, this);\n if (!parsed) return null;\n\n if (this.expectedType) {\n const expected = this.expectedType;\n const actual = parsed.type;\n\n // When we expect a number, string, boolean, or array but have a value, wrap it in an assertion.\n // When we expect a color or formatted string, but have a string or value, wrap it in a coercion.\n // Otherwise, we do static type-checking.\n //\n // These behaviors are overridable for:\n // * The \"coalesce\" operator, which needs to omit type annotations.\n // * String-valued properties (e.g. `text-field`), where coercion is more convenient than assertion.\n //\n if ((expected.kind === 'string' || expected.kind === 'number' || expected.kind === 'boolean' || expected.kind === 'object' || expected.kind === 'array') && actual.kind === 'value') {\n parsed = annotate(parsed, expected, options.typeAnnotation || 'assert');\n } else if ((expected.kind === 'color' || expected.kind === 'formatted' || expected.kind === 'resolvedImage') && (actual.kind === 'value' || actual.kind === 'string')) {\n parsed = annotate(parsed, expected, options.typeAnnotation || 'coerce');\n } else if (this.checkSubtype(expected, actual)) {\n return null;\n }\n }\n\n // If an expression's arguments are all literals, we can evaluate\n // it immediately and replace it with a literal value in the\n // parsed/compiled result. Expressions that expect an image should\n // not be resolved here so we can later get the available images.\n if (!(parsed instanceof Literal) && (parsed.type.kind !== 'resolvedImage') && isConstant(parsed)) {\n const ec = new EvaluationContext();\n try {\n parsed = new Literal(parsed.type, parsed.evaluate(ec));\n } catch (e) {\n this.error(e.message);\n return null;\n }\n }\n\n return parsed;\n }\n\n return this.error(`Unknown expression \"${op}\". If you wanted a literal array, use [\"literal\", [...]].`, 0);\n } else if (typeof expr === 'undefined') {\n return this.error(`'undefined' value invalid. Use null instead.`);\n } else if (typeof expr === 'object') {\n return this.error(`Bare objects invalid. Use [\"literal\", {...}] instead.`);\n } else {\n return this.error(`Expected an array, but found ${typeof expr} instead.`);\n }\n }\n\n /**\n * Returns a copy of this context suitable for parsing the subexpression at\n * index `index`, optionally appending to 'let' binding map.\n *\n * Note that `errors` property, intended for collecting errors while\n * parsing, is copied by reference rather than cloned.\n * @private\n */\n concat(index: number, expectedType?: ?Type, bindings?: Array<[string, Expression]>) {\n const path = typeof index === 'number' ? this.path.concat(index) : this.path;\n const scope = bindings ? this.scope.concat(bindings) : this.scope;\n return new ParsingContext(\n this.registry,\n path,\n expectedType || null,\n scope,\n this.errors\n );\n }\n\n /**\n * Push a parsing (or type checking) error into the `this.errors`\n * @param error The message\n * @param keys Optionally specify the source of the error at a child\n * of the current expression at `this.key`.\n * @private\n */\n error(error: string, ...keys: Array) {\n const key = `${this.key}${keys.map(k => `[${k}]`).join('')}`;\n this.errors.push(new ParsingError(key, error));\n }\n\n /**\n * Returns null if `t` is a subtype of `expected`; otherwise returns an\n * error message and also pushes it to `this.errors`.\n */\n checkSubtype(expected: Type, t: Type): ?string {\n const error = checkSubtype(expected, t);\n if (error) this.error(error);\n return error;\n }\n}\n\nexport default ParsingContext;\n\nfunction isConstant(expression: Expression) {\n if (expression instanceof Var) {\n return isConstant(expression.boundExpression);\n } else if (expression instanceof CompoundExpression && expression.name === 'error') {\n return false;\n } else if (expression instanceof CollatorExpression) {\n // Although the results of a Collator expression with fixed arguments\n // generally shouldn't change between executions, we can't serialize them\n // as constant expressions because results change based on environment.\n return false;\n } else if (expression instanceof Within) {\n return false;\n }\n\n const isTypeAnnotation = expression instanceof Coercion ||\n expression instanceof Assertion;\n\n let childrenConstant = true;\n expression.eachChild(child => {\n // We can _almost_ assume that if `expressions` children are constant,\n // they would already have been evaluated to Literal values when they\n // were parsed. Type annotations are the exception, because they might\n // have been inferred and added after a child was parsed.\n\n // So we recurse into isConstant() for the children of type annotations,\n // but otherwise simply check whether they are Literals.\n if (isTypeAnnotation) {\n childrenConstant = childrenConstant && isConstant(child);\n } else {\n childrenConstant = childrenConstant && child instanceof Literal;\n }\n });\n if (!childrenConstant) {\n return false;\n }\n\n return isFeatureConstant(expression) &&\n isGlobalPropertyConstant(expression, ['zoom', 'heatmap-density', 'line-progress', 'accumulated', 'is-supported-script']);\n}\n", "// @flow\n\nimport RuntimeError from './runtime_error';\n\nimport type {Expression} from './expression';\n\nexport type Stops = Array<[number, Expression]>;\n\n/**\n * Returns the index of the last stop <= input, or 0 if it doesn't exist.\n * @private\n */\nexport function findStopLessThanOrEqualTo(stops: Array, input: number) {\n const lastIndex = stops.length - 1;\n let lowerIndex = 0;\n let upperIndex = lastIndex;\n let currentIndex = 0;\n let currentValue, nextValue;\n\n while (lowerIndex <= upperIndex) {\n currentIndex = Math.floor((lowerIndex + upperIndex) / 2);\n currentValue = stops[currentIndex];\n nextValue = stops[currentIndex + 1];\n\n if (currentValue <= input) {\n if (currentIndex === lastIndex || input < nextValue) { // Search complete\n return currentIndex;\n }\n\n lowerIndex = currentIndex + 1;\n } else if (currentValue > input) {\n upperIndex = currentIndex - 1;\n } else {\n throw new RuntimeError('Input is not a number.');\n }\n }\n\n return 0;\n}\n", "// @flow\n\nimport {NumberType} from '../types';\n\nimport {findStopLessThanOrEqualTo} from '../stops';\n\nimport type {Stops} from '../stops';\nimport type {Expression} from '../expression';\nimport type ParsingContext from '../parsing_context';\nimport type EvaluationContext from '../evaluation_context';\nimport type {Type} from '../types';\n\nclass Step implements Expression {\n type: Type;\n\n input: Expression;\n labels: Array;\n outputs: Array;\n\n constructor(type: Type, input: Expression, stops: Stops) {\n this.type = type;\n this.input = input;\n\n this.labels = [];\n this.outputs = [];\n for (const [label, expression] of stops) {\n this.labels.push(label);\n this.outputs.push(expression);\n }\n }\n\n static parse(args: $ReadOnlyArray, context: ParsingContext) {\n if (args.length - 1 < 4) {\n return context.error(`Expected at least 4 arguments, but found only ${args.length - 1}.`);\n }\n\n if ((args.length - 1) % 2 !== 0) {\n return context.error(`Expected an even number of arguments.`);\n }\n\n const input = context.parse(args[1], 1, NumberType);\n if (!input) return null;\n\n const stops: Stops = [];\n\n let outputType: Type = (null: any);\n if (context.expectedType && context.expectedType.kind !== 'value') {\n outputType = context.expectedType;\n }\n\n for (let i = 1; i < args.length; i += 2) {\n const label = i === 1 ? -Infinity : args[i];\n const value = args[i + 1];\n\n const labelKey = i;\n const valueKey = i + 1;\n\n if (typeof label !== 'number') {\n return context.error('Input/output pairs for \"step\" expressions must be defined using literal numeric values (not computed expressions) for the input values.', labelKey);\n }\n\n if (stops.length && stops[stops.length - 1][0] >= label) {\n return context.error('Input/output pairs for \"step\" expressions must be arranged with input values in strictly ascending order.', labelKey);\n }\n\n const parsed = context.parse(value, valueKey, outputType);\n if (!parsed) return null;\n outputType = outputType || parsed.type;\n stops.push([label, parsed]);\n }\n\n return new Step(outputType, input, stops);\n }\n\n evaluate(ctx: EvaluationContext) {\n const labels = this.labels;\n const outputs = this.outputs;\n\n if (labels.length === 1) {\n return outputs[0].evaluate(ctx);\n }\n\n const value = ((this.input.evaluate(ctx): any): number);\n if (value <= labels[0]) {\n return outputs[0].evaluate(ctx);\n }\n\n const stopCount = labels.length;\n if (value >= labels[stopCount - 1]) {\n return outputs[stopCount - 1].evaluate(ctx);\n }\n\n const index = findStopLessThanOrEqualTo(labels, value);\n return outputs[index].evaluate(ctx);\n }\n\n eachChild(fn: (_: Expression) => void) {\n fn(this.input);\n for (const expression of this.outputs) {\n fn(expression);\n }\n }\n\n outputDefined(): boolean {\n return this.outputs.every(out => out.outputDefined());\n }\n\n serialize() {\n const serialized = [\"step\", this.input.serialize()];\n for (let i = 0; i < this.labels.length; i++) {\n if (i > 0) {\n serialized.push(this.labels[i]);\n }\n serialized.push(this.outputs[i].serialize());\n }\n return serialized;\n }\n}\n\nexport default Step;\n", "// @flow\n\nimport Color from './color';\n\nexport function number(a: number, b: number, t: number) {\n return (a * (1 - t)) + (b * t);\n}\n\nexport function color(from: Color, to: Color, t: number) {\n return new Color(\n number(from.r, to.r, t),\n number(from.g, to.g, t),\n number(from.b, to.b, t),\n number(from.a, to.a, t)\n );\n}\n\nexport function array(from: Array, to: Array, t: number): Array {\n return from.map((d, i) => {\n return number(d, to[i], t);\n });\n}\n", "// @flow\n\nimport Color from './color';\n\nimport {number as interpolateNumber} from './interpolate';\n\ntype LABColor = {\n l: number,\n a: number,\n b: number,\n alpha: number\n};\n\ntype HCLColor = {\n h: number,\n c: number,\n l: number,\n alpha: number\n};\n\n// Constants\nconst Xn = 0.950470, // D65 standard referent\n Yn = 1,\n Zn = 1.088830,\n t0 = 4 / 29,\n t1 = 6 / 29,\n t2 = 3 * t1 * t1,\n t3 = t1 * t1 * t1,\n deg2rad = Math.PI / 180,\n rad2deg = 180 / Math.PI;\n\n// Utilities\nfunction xyz2lab(t: number) {\n return t > t3 ? Math.pow(t, 1 / 3) : t / t2 + t0;\n}\n\nfunction lab2xyz(t: number) {\n return t > t1 ? t * t * t : t2 * (t - t0);\n}\n\nfunction xyz2rgb(x: number) {\n return 255 * (x <= 0.0031308 ? 12.92 * x : 1.055 * Math.pow(x, 1 / 2.4) - 0.055);\n}\n\nfunction rgb2xyz(x: number) {\n x /= 255;\n return x <= 0.04045 ? x / 12.92 : Math.pow((x + 0.055) / 1.055, 2.4);\n}\n\n// LAB\nfunction rgbToLab(rgbColor: Color): LABColor {\n const b = rgb2xyz(rgbColor.r),\n a = rgb2xyz(rgbColor.g),\n l = rgb2xyz(rgbColor.b),\n x = xyz2lab((0.4124564 * b + 0.3575761 * a + 0.1804375 * l) / Xn),\n y = xyz2lab((0.2126729 * b + 0.7151522 * a + 0.0721750 * l) / Yn),\n z = xyz2lab((0.0193339 * b + 0.1191920 * a + 0.9503041 * l) / Zn);\n\n return {\n l: 116 * y - 16,\n a: 500 * (x - y),\n b: 200 * (y - z),\n alpha: rgbColor.a\n };\n}\n\nfunction labToRgb(labColor: LABColor): Color {\n let y = (labColor.l + 16) / 116,\n x = isNaN(labColor.a) ? y : y + labColor.a / 500,\n z = isNaN(labColor.b) ? y : y - labColor.b / 200;\n y = Yn * lab2xyz(y);\n x = Xn * lab2xyz(x);\n z = Zn * lab2xyz(z);\n return new Color(\n xyz2rgb(3.2404542 * x - 1.5371385 * y - 0.4985314 * z), // D65 -> sRGB\n xyz2rgb(-0.9692660 * x + 1.8760108 * y + 0.0415560 * z),\n xyz2rgb(0.0556434 * x - 0.2040259 * y + 1.0572252 * z),\n labColor.alpha\n );\n}\n\nfunction interpolateLab(from: LABColor, to: LABColor, t: number) {\n return {\n l: interpolateNumber(from.l, to.l, t),\n a: interpolateNumber(from.a, to.a, t),\n b: interpolateNumber(from.b, to.b, t),\n alpha: interpolateNumber(from.alpha, to.alpha, t)\n };\n}\n\n// HCL\nfunction rgbToHcl(rgbColor: Color): HCLColor {\n const {l, a, b} = rgbToLab(rgbColor);\n const h = Math.atan2(b, a) * rad2deg;\n return {\n h: h < 0 ? h + 360 : h,\n c: Math.sqrt(a * a + b * b),\n l,\n alpha: rgbColor.a\n };\n}\n\nfunction hclToRgb(hclColor: HCLColor): Color {\n const h = hclColor.h * deg2rad,\n c = hclColor.c,\n l = hclColor.l;\n return labToRgb({\n l,\n a: Math.cos(h) * c,\n b: Math.sin(h) * c,\n alpha: hclColor.alpha\n });\n}\n\nfunction interpolateHue(a: number, b: number, t: number) {\n const d = b - a;\n return a + t * (d > 180 || d < -180 ? d - 360 * Math.round(d / 360) : d);\n}\n\nfunction interpolateHcl(from: HCLColor, to: HCLColor, t: number) {\n return {\n h: interpolateHue(from.h, to.h, t),\n c: interpolateNumber(from.c, to.c, t),\n l: interpolateNumber(from.l, to.l, t),\n alpha: interpolateNumber(from.alpha, to.alpha, t)\n };\n}\n\nexport const lab = {\n forward: rgbToLab,\n reverse: labToRgb,\n interpolate: interpolateLab\n};\n\nexport const hcl = {\n forward: rgbToHcl,\n reverse: hclToRgb,\n interpolate: interpolateHcl\n};\n", "// @flow\n\nimport UnitBezier from '@mapbox/unitbezier';\n\nimport * as interpolate from '../../util/interpolate';\nimport {toString, NumberType, ColorType} from '../types';\nimport {findStopLessThanOrEqualTo} from '../stops';\nimport {hcl, lab} from '../../util/color_spaces';\n\nimport type {Stops} from '../stops';\nimport type {Expression} from '../expression';\nimport type ParsingContext from '../parsing_context';\nimport type EvaluationContext from '../evaluation_context';\nimport type {Type} from '../types';\n\nexport type InterpolationType =\n { name: 'linear' } |\n { name: 'exponential', base: number } |\n { name: 'cubic-bezier', controlPoints: [number, number, number, number] };\n\nclass Interpolate implements Expression {\n type: Type;\n\n operator: 'interpolate' | 'interpolate-hcl' | 'interpolate-lab';\n interpolation: InterpolationType;\n input: Expression;\n labels: Array;\n outputs: Array;\n\n constructor(type: Type, operator: 'interpolate' | 'interpolate-hcl' | 'interpolate-lab', interpolation: InterpolationType, input: Expression, stops: Stops) {\n this.type = type;\n this.operator = operator;\n this.interpolation = interpolation;\n this.input = input;\n\n this.labels = [];\n this.outputs = [];\n for (const [label, expression] of stops) {\n this.labels.push(label);\n this.outputs.push(expression);\n }\n }\n\n static interpolationFactor(interpolation: InterpolationType, input: number, lower: number, upper: number) {\n let t = 0;\n if (interpolation.name === 'exponential') {\n t = exponentialInterpolation(input, interpolation.base, lower, upper);\n } else if (interpolation.name === 'linear') {\n t = exponentialInterpolation(input, 1, lower, upper);\n } else if (interpolation.name === 'cubic-bezier') {\n const c = interpolation.controlPoints;\n const ub = new UnitBezier(c[0], c[1], c[2], c[3]);\n t = ub.solve(exponentialInterpolation(input, 1, lower, upper));\n }\n return t;\n }\n\n static parse(args: $ReadOnlyArray, context: ParsingContext) {\n let [operator, interpolation, input, ...rest] = args;\n\n if (!Array.isArray(interpolation) || interpolation.length === 0) {\n return context.error(`Expected an interpolation type expression.`, 1);\n }\n\n if (interpolation[0] === 'linear') {\n interpolation = {name: 'linear'};\n } else if (interpolation[0] === 'exponential') {\n const base = interpolation[1];\n if (typeof base !== 'number')\n return context.error(`Exponential interpolation requires a numeric base.`, 1, 1);\n interpolation = {\n name: 'exponential',\n base\n };\n } else if (interpolation[0] === 'cubic-bezier') {\n const controlPoints = interpolation.slice(1);\n if (\n controlPoints.length !== 4 ||\n controlPoints.some(t => typeof t !== 'number' || t < 0 || t > 1)\n ) {\n return context.error('Cubic bezier interpolation requires four numeric arguments with values between 0 and 1.', 1);\n }\n\n interpolation = {\n name: 'cubic-bezier',\n controlPoints: (controlPoints: any)\n };\n } else {\n return context.error(`Unknown interpolation type ${String(interpolation[0])}`, 1, 0);\n }\n\n if (args.length - 1 < 4) {\n return context.error(`Expected at least 4 arguments, but found only ${args.length - 1}.`);\n }\n\n if ((args.length - 1) % 2 !== 0) {\n return context.error(`Expected an even number of arguments.`);\n }\n\n input = context.parse(input, 2, NumberType);\n if (!input) return null;\n\n const stops: Stops = [];\n\n let outputType: Type = (null: any);\n if (operator === 'interpolate-hcl' || operator === 'interpolate-lab') {\n outputType = ColorType;\n } else if (context.expectedType && context.expectedType.kind !== 'value') {\n outputType = context.expectedType;\n }\n\n for (let i = 0; i < rest.length; i += 2) {\n const label = rest[i];\n const value = rest[i + 1];\n\n const labelKey = i + 3;\n const valueKey = i + 4;\n\n if (typeof label !== 'number') {\n return context.error('Input/output pairs for \"interpolate\" expressions must be defined using literal numeric values (not computed expressions) for the input values.', labelKey);\n }\n\n if (stops.length && stops[stops.length - 1][0] >= label) {\n return context.error('Input/output pairs for \"interpolate\" expressions must be arranged with input values in strictly ascending order.', labelKey);\n }\n\n const parsed = context.parse(value, valueKey, outputType);\n if (!parsed) return null;\n outputType = outputType || parsed.type;\n stops.push([label, parsed]);\n }\n\n if (outputType.kind !== 'number' &&\n outputType.kind !== 'color' &&\n !(\n outputType.kind === 'array' &&\n outputType.itemType.kind === 'number' &&\n typeof outputType.N === 'number'\n )\n ) {\n return context.error(`Type ${toString(outputType)} is not interpolatable.`);\n }\n\n return new Interpolate(outputType, (operator: any), interpolation, input, stops);\n }\n\n evaluate(ctx: EvaluationContext) {\n const labels = this.labels;\n const outputs = this.outputs;\n\n if (labels.length === 1) {\n return outputs[0].evaluate(ctx);\n }\n\n const value = ((this.input.evaluate(ctx): any): number);\n if (value <= labels[0]) {\n return outputs[0].evaluate(ctx);\n }\n\n const stopCount = labels.length;\n if (value >= labels[stopCount - 1]) {\n return outputs[stopCount - 1].evaluate(ctx);\n }\n\n const index = findStopLessThanOrEqualTo(labels, value);\n const lower = labels[index];\n const upper = labels[index + 1];\n const t = Interpolate.interpolationFactor(this.interpolation, value, lower, upper);\n\n const outputLower = outputs[index].evaluate(ctx);\n const outputUpper = outputs[index + 1].evaluate(ctx);\n\n if (this.operator === 'interpolate') {\n return (interpolate[this.type.kind.toLowerCase()]: any)(outputLower, outputUpper, t); // eslint-disable-line import/namespace\n } else if (this.operator === 'interpolate-hcl') {\n return hcl.reverse(hcl.interpolate(hcl.forward(outputLower), hcl.forward(outputUpper), t));\n } else {\n return lab.reverse(lab.interpolate(lab.forward(outputLower), lab.forward(outputUpper), t));\n }\n }\n\n eachChild(fn: (_: Expression) => void) {\n fn(this.input);\n for (const expression of this.outputs) {\n fn(expression);\n }\n }\n\n outputDefined(): boolean {\n return this.outputs.every(out => out.outputDefined());\n }\n\n serialize(): Array {\n let interpolation;\n if (this.interpolation.name === 'linear') {\n interpolation = [\"linear\"];\n } else if (this.interpolation.name === 'exponential') {\n if (this.interpolation.base === 1) {\n interpolation = [\"linear\"];\n } else {\n interpolation = [\"exponential\", this.interpolation.base];\n }\n } else {\n interpolation = [\"cubic-bezier\" ].concat(this.interpolation.controlPoints);\n }\n\n const serialized = [this.operator, interpolation, this.input.serialize()];\n\n for (let i = 0; i < this.labels.length; i++) {\n serialized.push(\n this.labels[i],\n this.outputs[i].serialize()\n );\n }\n return serialized;\n }\n}\n\n/**\n * Returns a ratio that can be used to interpolate between exponential function\n * stops.\n * How it works: Two consecutive stop values define a (scaled and shifted) exponential function `f(x) = a * base^x + b`, where `base` is the user-specified base,\n * and `a` and `b` are constants affording sufficient degrees of freedom to fit\n * the function to the given stops.\n *\n * Here's a bit of algebra that lets us compute `f(x)` directly from the stop\n * values without explicitly solving for `a` and `b`:\n *\n * First stop value: `f(x0) = y0 = a * base^x0 + b`\n * Second stop value: `f(x1) = y1 = a * base^x1 + b`\n * => `y1 - y0 = a(base^x1 - base^x0)`\n * => `a = (y1 - y0)/(base^x1 - base^x0)`\n *\n * Desired value: `f(x) = y = a * base^x + b`\n * => `f(x) = y0 + a * (base^x - base^x0)`\n *\n * From the above, we can replace the `a` in `a * (base^x - base^x0)` and do a\n * little algebra:\n * ```\n * a * (base^x - base^x0) = (y1 - y0)/(base^x1 - base^x0) * (base^x - base^x0)\n * = (y1 - y0) * (base^x - base^x0) / (base^x1 - base^x0)\n * ```\n *\n * If we let `(base^x - base^x0) / (base^x1 base^x0)`, then we have\n * `f(x) = y0 + (y1 - y0) * ratio`. In other words, `ratio` may be treated as\n * an interpolation factor between the two stops' output values.\n *\n * (Note: a slightly different form for `ratio`,\n * `(base^(x-x0) - 1) / (base^(x1-x0) - 1) `, is equivalent, but requires fewer\n * expensive `Math.pow()` operations.)\n *\n * @private\n*/\nfunction exponentialInterpolation(input, base, lowerValue, upperValue) {\n const difference = upperValue - lowerValue;\n const progress = input - lowerValue;\n\n if (difference === 0) {\n return 0;\n } else if (base === 1) {\n return progress / difference;\n } else {\n return (Math.pow(base, progress) - 1) / (Math.pow(base, difference) - 1);\n }\n}\n\nexport default Interpolate;\n", "// @flow\n\nimport assert from 'assert';\n\nimport {checkSubtype, ValueType} from '../types';\nimport ResolvedImage from '../types/resolved_image';\n\nimport type {Expression} from '../expression';\nimport type ParsingContext from '../parsing_context';\nimport type EvaluationContext from '../evaluation_context';\nimport type {Type} from '../types';\n\nclass Coalesce implements Expression {\n type: Type;\n args: Array;\n\n constructor(type: Type, args: Array) {\n this.type = type;\n this.args = args;\n }\n\n static parse(args: $ReadOnlyArray, context: ParsingContext) {\n if (args.length < 2) {\n return context.error(\"Expectected at least one argument.\");\n }\n let outputType: Type = (null: any);\n const expectedType = context.expectedType;\n if (expectedType && expectedType.kind !== 'value') {\n outputType = expectedType;\n }\n const parsedArgs = [];\n\n for (const arg of args.slice(1)) {\n const parsed = context.parse(arg, 1 + parsedArgs.length, outputType, undefined, {typeAnnotation: 'omit'});\n if (!parsed) return null;\n outputType = outputType || parsed.type;\n parsedArgs.push(parsed);\n }\n assert(outputType);\n\n // Above, we parse arguments without inferred type annotation so that\n // they don't produce a runtime error for `null` input, which would\n // preempt the desired null-coalescing behavior.\n // Thus, if any of our arguments would have needed an annotation, we\n // need to wrap the enclosing coalesce expression with it instead.\n const needsAnnotation = expectedType &&\n parsedArgs.some(arg => checkSubtype(expectedType, arg.type));\n\n return needsAnnotation ?\n new Coalesce(ValueType, parsedArgs) :\n new Coalesce((outputType: any), parsedArgs);\n }\n\n evaluate(ctx: EvaluationContext) {\n let result = null;\n let argCount = 0;\n let requestedImageName;\n for (const arg of this.args) {\n argCount++;\n result = arg.evaluate(ctx);\n // we need to keep track of the first requested image in a coalesce statement\n // if coalesce can't find a valid image, we return the first image name so styleimagemissing can fire\n if (result && result instanceof ResolvedImage && !result.available) {\n if (!requestedImageName) {\n requestedImageName = result.name;\n }\n result = null;\n if (argCount === this.args.length) {\n result = requestedImageName;\n }\n }\n\n if (result !== null) break;\n }\n return result;\n }\n\n eachChild(fn: (_: Expression) => void) {\n this.args.forEach(fn);\n }\n\n outputDefined(): boolean {\n return this.args.every(arg => arg.outputDefined());\n }\n\n serialize() {\n const serialized = [\"coalesce\"];\n this.eachChild(child => { serialized.push(child.serialize()); });\n return serialized;\n }\n}\n\nexport default Coalesce;\n", "// @flow\n\nimport type {Type} from '../types';\nimport type {Expression} from '../expression';\nimport type ParsingContext from '../parsing_context';\nimport type EvaluationContext from '../evaluation_context';\n\nclass Let implements Expression {\n type: Type;\n bindings: Array<[string, Expression]>;\n result: Expression;\n\n constructor(bindings: Array<[string, Expression]>, result: Expression) {\n this.type = result.type;\n this.bindings = [].concat(bindings);\n this.result = result;\n }\n\n evaluate(ctx: EvaluationContext) {\n return this.result.evaluate(ctx);\n }\n\n eachChild(fn: (_: Expression) => void) {\n for (const binding of this.bindings) {\n fn(binding[1]);\n }\n fn(this.result);\n }\n\n static parse(args: $ReadOnlyArray, context: ParsingContext) {\n if (args.length < 4)\n return context.error(`Expected at least 3 arguments, but found ${args.length - 1} instead.`);\n\n const bindings: Array<[string, Expression]> = [];\n for (let i = 1; i < args.length - 1; i += 2) {\n const name = args[i];\n\n if (typeof name !== 'string') {\n return context.error(`Expected string, but found ${typeof name} instead.`, i);\n }\n\n if (/[^a-zA-Z0-9_]/.test(name)) {\n return context.error(`Variable names must contain only alphanumeric characters or '_'.`, i);\n }\n\n const value = context.parse(args[i + 1], i + 1);\n if (!value) return null;\n\n bindings.push([name, value]);\n }\n\n const result = context.parse(args[args.length - 1], args.length - 1, context.expectedType, bindings);\n if (!result) return null;\n\n return new Let(bindings, result);\n }\n\n outputDefined() {\n return this.result.outputDefined();\n }\n\n serialize() {\n const serialized = [\"let\"];\n for (const [name, expr] of this.bindings) {\n serialized.push(name, expr.serialize());\n }\n serialized.push(this.result.serialize());\n return serialized;\n }\n}\n\nexport default Let;\n", "// @flow\n\nimport {array, ValueType, NumberType} from '../types';\n\nimport RuntimeError from '../runtime_error';\n\nimport type {Expression} from '../expression';\nimport type ParsingContext from '../parsing_context';\nimport type EvaluationContext from '../evaluation_context';\nimport type {Type, ArrayType} from '../types';\nimport type {Value} from '../values';\n\nclass At implements Expression {\n type: Type;\n index: Expression;\n input: Expression;\n\n constructor(type: Type, index: Expression, input: Expression) {\n this.type = type;\n this.index = index;\n this.input = input;\n }\n\n static parse(args: $ReadOnlyArray, context: ParsingContext) {\n if (args.length !== 3)\n return context.error(`Expected 2 arguments, but found ${args.length - 1} instead.`);\n\n const index = context.parse(args[1], 1, NumberType);\n const input = context.parse(args[2], 2, array(context.expectedType || ValueType));\n\n if (!index || !input) return null;\n\n const t: ArrayType = (input.type: any);\n return new At(t.itemType, index, input);\n }\n\n evaluate(ctx: EvaluationContext) {\n const index = ((this.index.evaluate(ctx): any): number);\n const array = ((this.input.evaluate(ctx): any): Array);\n\n if (index < 0) {\n throw new RuntimeError(`Array index out of bounds: ${index} < 0.`);\n }\n\n if (index >= array.length) {\n throw new RuntimeError(`Array index out of bounds: ${index} > ${array.length - 1}.`);\n }\n\n if (index !== Math.floor(index)) {\n throw new RuntimeError(`Array index must be an integer, but found ${index} instead.`);\n }\n\n return array[index];\n }\n\n eachChild(fn: (_: Expression) => void) {\n fn(this.index);\n fn(this.input);\n }\n\n outputDefined() {\n return false;\n }\n\n serialize() {\n return [\"at\", this.index.serialize(), this.input.serialize()];\n }\n}\n\nexport default At;\n", "// @flow\n\nimport {BooleanType, StringType, ValueType, NullType, toString, NumberType, isValidType, isValidNativeType} from '../types';\nimport RuntimeError from '../runtime_error';\nimport {typeOf} from '../values';\n\nimport type {Expression} from '../expression';\nimport type ParsingContext from '../parsing_context';\nimport type EvaluationContext from '../evaluation_context';\nimport type {Type} from '../types';\n\nclass In implements Expression {\n type: Type;\n needle: Expression;\n haystack: Expression;\n\n constructor(needle: Expression, haystack: Expression) {\n this.type = BooleanType;\n this.needle = needle;\n this.haystack = haystack;\n }\n\n static parse(args: $ReadOnlyArray, context: ParsingContext) {\n if (args.length !== 3) {\n return context.error(`Expected 2 arguments, but found ${args.length - 1} instead.`);\n }\n\n const needle = context.parse(args[1], 1, ValueType);\n\n const haystack = context.parse(args[2], 2, ValueType);\n\n if (!needle || !haystack) return null;\n\n if (!isValidType(needle.type, [BooleanType, StringType, NumberType, NullType, ValueType])) {\n return context.error(`Expected first argument to be of type boolean, string, number or null, but found ${toString(needle.type)} instead`);\n }\n\n return new In(needle, haystack);\n }\n\n evaluate(ctx: EvaluationContext) {\n const needle = (this.needle.evaluate(ctx): any);\n const haystack = (this.haystack.evaluate(ctx): any);\n\n if (!haystack) return false;\n\n if (!isValidNativeType(needle, ['boolean', 'string', 'number', 'null'])) {\n throw new RuntimeError(`Expected first argument to be of type boolean, string, number or null, but found ${toString(typeOf(needle))} instead.`);\n }\n\n if (!isValidNativeType(haystack, ['string', 'array'])) {\n throw new RuntimeError(`Expected second argument to be of type array or string, but found ${toString(typeOf(haystack))} instead.`);\n }\n\n return haystack.indexOf(needle) >= 0;\n }\n\n eachChild(fn: (_: Expression) => void) {\n fn(this.needle);\n fn(this.haystack);\n }\n\n outputDefined() {\n return true;\n }\n\n serialize() {\n return [\"in\", this.needle.serialize(), this.haystack.serialize()];\n }\n}\n\nexport default In;\n", "// @flow\n\nimport {BooleanType, StringType, ValueType, NullType, toString, NumberType, isValidType, isValidNativeType} from '../types';\nimport RuntimeError from '../runtime_error';\nimport {typeOf} from '../values';\n\nimport type {Expression} from '../expression';\nimport type ParsingContext from '../parsing_context';\nimport type EvaluationContext from '../evaluation_context';\nimport type {Type} from '../types';\n\nclass IndexOf implements Expression {\n type: Type;\n needle: Expression;\n haystack: Expression;\n fromIndex: ?Expression;\n\n constructor(needle: Expression, haystack: Expression, fromIndex?: Expression) {\n this.type = NumberType;\n this.needle = needle;\n this.haystack = haystack;\n this.fromIndex = fromIndex;\n }\n\n static parse(args: $ReadOnlyArray, context: ParsingContext) {\n if (args.length <= 2 || args.length >= 5) {\n return context.error(`Expected 3 or 4 arguments, but found ${args.length - 1} instead.`);\n }\n\n const needle = context.parse(args[1], 1, ValueType);\n\n const haystack = context.parse(args[2], 2, ValueType);\n\n if (!needle || !haystack) return null;\n if (!isValidType(needle.type, [BooleanType, StringType, NumberType, NullType, ValueType])) {\n return context.error(`Expected first argument to be of type boolean, string, number or null, but found ${toString(needle.type)} instead`);\n }\n\n if (args.length === 4) {\n const fromIndex = context.parse(args[3], 3, NumberType);\n if (!fromIndex) return null;\n return new IndexOf(needle, haystack, fromIndex);\n } else {\n return new IndexOf(needle, haystack);\n }\n }\n\n evaluate(ctx: EvaluationContext) {\n const needle = (this.needle.evaluate(ctx): any);\n const haystack = (this.haystack.evaluate(ctx): any);\n\n if (!isValidNativeType(needle, ['boolean', 'string', 'number', 'null'])) {\n throw new RuntimeError(`Expected first argument to be of type boolean, string, number or null, but found ${toString(typeOf(needle))} instead.`);\n }\n\n if (!isValidNativeType(haystack, ['string', 'array'])) {\n throw new RuntimeError(`Expected second argument to be of type array or string, but found ${toString(typeOf(haystack))} instead.`);\n }\n\n if (this.fromIndex) {\n const fromIndex = (this.fromIndex.evaluate(ctx): number);\n return haystack.indexOf(needle, fromIndex);\n }\n\n return haystack.indexOf(needle);\n }\n\n eachChild(fn: (_: Expression) => void) {\n fn(this.needle);\n fn(this.haystack);\n if (this.fromIndex) {\n fn(this.fromIndex);\n }\n }\n\n outputDefined() {\n return false;\n }\n\n serialize() {\n if (this.fromIndex != null && this.fromIndex !== undefined) {\n const fromIndex = this.fromIndex.serialize();\n return [\"index-of\", this.needle.serialize(), this.haystack.serialize(), fromIndex];\n }\n return [\"index-of\", this.needle.serialize(), this.haystack.serialize()];\n }\n}\n\nexport default IndexOf;\n", "// @flow\n\nimport assert from 'assert';\n\nimport {typeOf} from '../values';\nimport {ValueType, type Type} from '../types';\n\nimport type {Expression} from '../expression';\nimport type ParsingContext from '../parsing_context';\nimport type EvaluationContext from '../evaluation_context';\n\n// Map input label values to output expression index\ntype Cases = {[number | string]: number};\n\nclass Match implements Expression {\n type: Type;\n inputType: Type;\n\n input: Expression;\n cases: Cases;\n outputs: Array;\n otherwise: Expression;\n\n constructor(inputType: Type, outputType: Type, input: Expression, cases: Cases, outputs: Array, otherwise: Expression) {\n this.inputType = inputType;\n this.type = outputType;\n this.input = input;\n this.cases = cases;\n this.outputs = outputs;\n this.otherwise = otherwise;\n }\n\n static parse(args: $ReadOnlyArray, context: ParsingContext) {\n if (args.length < 5)\n return context.error(`Expected at least 4 arguments, but found only ${args.length - 1}.`);\n if (args.length % 2 !== 1)\n return context.error(`Expected an even number of arguments.`);\n\n let inputType;\n let outputType;\n if (context.expectedType && context.expectedType.kind !== 'value') {\n outputType = context.expectedType;\n }\n const cases = {};\n const outputs = [];\n for (let i = 2; i < args.length - 1; i += 2) {\n let labels = args[i];\n const value = args[i + 1];\n\n if (!Array.isArray(labels)) {\n labels = [labels];\n }\n\n const labelContext = context.concat(i);\n if (labels.length === 0) {\n return labelContext.error('Expected at least one branch label.');\n }\n\n for (const label of labels) {\n if (typeof label !== 'number' && typeof label !== 'string') {\n return labelContext.error(`Branch labels must be numbers or strings.`);\n } else if (typeof label === 'number' && Math.abs(label) > Number.MAX_SAFE_INTEGER) {\n return labelContext.error(`Branch labels must be integers no larger than ${Number.MAX_SAFE_INTEGER}.`);\n\n } else if (typeof label === 'number' && Math.floor(label) !== label) {\n return labelContext.error(`Numeric branch labels must be integer values.`);\n\n } else if (!inputType) {\n inputType = typeOf(label);\n } else if (labelContext.checkSubtype(inputType, typeOf(label))) {\n return null;\n }\n\n if (typeof cases[String(label)] !== 'undefined') {\n return labelContext.error('Branch labels must be unique.');\n }\n\n cases[String(label)] = outputs.length;\n }\n\n const result = context.parse(value, i, outputType);\n if (!result) return null;\n outputType = outputType || result.type;\n outputs.push(result);\n }\n\n const input = context.parse(args[1], 1, ValueType);\n if (!input) return null;\n\n const otherwise = context.parse(args[args.length - 1], args.length - 1, outputType);\n if (!otherwise) return null;\n\n assert(inputType && outputType);\n\n if (input.type.kind !== 'value' && context.concat(1).checkSubtype((inputType: any), input.type)) {\n return null;\n }\n\n return new Match((inputType: any), (outputType: any), input, cases, outputs, otherwise);\n }\n\n evaluate(ctx: EvaluationContext) {\n const input = (this.input.evaluate(ctx): any);\n const output = (typeOf(input) === this.inputType && this.outputs[this.cases[input]]) || this.otherwise;\n return output.evaluate(ctx);\n }\n\n eachChild(fn: (_: Expression) => void) {\n fn(this.input);\n this.outputs.forEach(fn);\n fn(this.otherwise);\n }\n\n outputDefined(): boolean {\n return this.outputs.every(out => out.outputDefined()) && this.otherwise.outputDefined();\n }\n\n serialize(): Array {\n const serialized = [\"match\", this.input.serialize()];\n\n // Sort so serialization has an arbitrary defined order, even though\n // branch order doesn't affect evaluation\n const sortedLabels = Object.keys(this.cases).sort();\n\n // Group branches by unique match expression to support condensed\n // serializations of the form [case1, case2, ...] -> matchExpression\n const groupedByOutput: Array<[number, Array]> = [];\n const outputLookup: {[index: number]: number} = {}; // lookup index into groupedByOutput for a given output expression\n for (const label of sortedLabels) {\n const outputIndex = outputLookup[this.cases[label]];\n if (outputIndex === undefined) {\n // First time seeing this output, add it to the end of the grouped list\n outputLookup[this.cases[label]] = groupedByOutput.length;\n groupedByOutput.push([this.cases[label], [label]]);\n } else {\n // We've seen this expression before, add the label to that output's group\n groupedByOutput[outputIndex][1].push(label);\n }\n }\n\n const coerceLabel = (label) => this.inputType.kind === 'number' ? Number(label) : label;\n\n for (const [outputIndex, labels] of groupedByOutput) {\n if (labels.length === 1) {\n // Only a single label matches this output expression\n serialized.push(coerceLabel(labels[0]));\n } else {\n // Array of literal labels pointing to this output expression\n serialized.push(labels.map(coerceLabel));\n }\n serialized.push(this.outputs[outputIndex].serialize());\n }\n serialized.push(this.otherwise.serialize());\n return serialized;\n }\n}\n\nexport default Match;\n", "// @flow\n\nimport assert from 'assert';\n\nimport {BooleanType} from '../types';\n\nimport type {Expression} from '../expression';\nimport type ParsingContext from '../parsing_context';\nimport type EvaluationContext from '../evaluation_context';\nimport type {Type} from '../types';\n\ntype Branches = Array<[Expression, Expression]>;\n\nclass Case implements Expression {\n type: Type;\n\n branches: Branches;\n otherwise: Expression;\n\n constructor(type: Type, branches: Branches, otherwise: Expression) {\n this.type = type;\n this.branches = branches;\n this.otherwise = otherwise;\n }\n\n static parse(args: $ReadOnlyArray, context: ParsingContext) {\n if (args.length < 4)\n return context.error(`Expected at least 3 arguments, but found only ${args.length - 1}.`);\n if (args.length % 2 !== 0)\n return context.error(`Expected an odd number of arguments.`);\n\n let outputType: ?Type;\n if (context.expectedType && context.expectedType.kind !== 'value') {\n outputType = context.expectedType;\n }\n\n const branches = [];\n for (let i = 1; i < args.length - 1; i += 2) {\n const test = context.parse(args[i], i, BooleanType);\n if (!test) return null;\n\n const result = context.parse(args[i + 1], i + 1, outputType);\n if (!result) return null;\n\n branches.push([test, result]);\n\n outputType = outputType || result.type;\n }\n\n const otherwise = context.parse(args[args.length - 1], args.length - 1, outputType);\n if (!otherwise) return null;\n\n assert(outputType);\n return new Case((outputType: any), branches, otherwise);\n }\n\n evaluate(ctx: EvaluationContext) {\n for (const [test, expression] of this.branches) {\n if (test.evaluate(ctx)) {\n return expression.evaluate(ctx);\n }\n }\n return this.otherwise.evaluate(ctx);\n }\n\n eachChild(fn: (_: Expression) => void) {\n for (const [test, expression] of this.branches) {\n fn(test);\n fn(expression);\n }\n fn(this.otherwise);\n }\n\n outputDefined(): boolean {\n return this.branches.every(([_, out]) => out.outputDefined()) && this.otherwise.outputDefined();\n }\n\n serialize() {\n const serialized = [\"case\"];\n this.eachChild(child => { serialized.push(child.serialize()); });\n return serialized;\n }\n}\n\nexport default Case;\n", "// @flow\n\nimport {ValueType, NumberType, StringType, array, toString, isValidType, isValidNativeType} from '../types';\nimport RuntimeError from '../runtime_error';\nimport {typeOf} from '../values';\n\nimport type {Expression} from '../expression';\nimport type ParsingContext from '../parsing_context';\nimport type EvaluationContext from '../evaluation_context';\nimport type {Type} from '../types';\n\nclass Slice implements Expression {\n type: Type;\n input: Expression;\n beginIndex: Expression;\n endIndex: ?Expression;\n\n constructor(type: Type, input: Expression, beginIndex: Expression, endIndex?: Expression) {\n this.type = type;\n this.input = input;\n this.beginIndex = beginIndex;\n this.endIndex = endIndex;\n\n }\n\n static parse(args: $ReadOnlyArray, context: ParsingContext) {\n if (args.length <= 2 || args.length >= 5) {\n return context.error(`Expected 3 or 4 arguments, but found ${args.length - 1} instead.`);\n }\n\n const input = context.parse(args[1], 1, ValueType);\n const beginIndex = context.parse(args[2], 2, NumberType);\n\n if (!input || !beginIndex) return null;\n\n if (!isValidType(input.type, [array(ValueType), StringType, ValueType])) {\n return context.error(`Expected first argument to be of type array or string, but found ${toString(input.type)} instead`);\n }\n\n if (args.length === 4) {\n const endIndex = context.parse(args[3], 3, NumberType);\n if (!endIndex) return null;\n return new Slice(input.type, input, beginIndex, endIndex);\n } else {\n return new Slice(input.type, input, beginIndex);\n }\n }\n\n evaluate(ctx: EvaluationContext) {\n const input = (this.input.evaluate(ctx): any);\n const beginIndex = (this.beginIndex.evaluate(ctx): number);\n\n if (!isValidNativeType(input, ['string', 'array'])) {\n throw new RuntimeError(`Expected first argument to be of type array or string, but found ${toString(typeOf(input))} instead.`);\n }\n\n if (this.endIndex) {\n const endIndex = (this.endIndex.evaluate(ctx): number);\n return input.slice(beginIndex, endIndex);\n }\n\n return input.slice(beginIndex);\n }\n\n eachChild(fn: (_: Expression) => void) {\n fn(this.input);\n fn(this.beginIndex);\n if (this.endIndex) {\n fn(this.endIndex);\n }\n }\n\n outputDefined() {\n return false;\n }\n\n serialize() {\n if (this.endIndex != null && this.endIndex !== undefined) {\n const endIndex = this.endIndex.serialize();\n return [\"slice\", this.input.serialize(), this.beginIndex.serialize(), endIndex];\n }\n return [\"slice\", this.input.serialize(), this.beginIndex.serialize()];\n }\n}\n\nexport default Slice;\n", "// @flow\n\nimport {toString, ValueType, BooleanType, CollatorType} from '../types';\nimport Assertion from './assertion';\nimport {typeOf} from '../values';\nimport RuntimeError from '../runtime_error';\n\nimport type {Expression} from '../expression';\nimport type EvaluationContext from '../evaluation_context';\nimport type ParsingContext from '../parsing_context';\nimport type {Type} from '../types';\n\ntype ComparisonOperator = '==' | '!=' | '<' | '>' | '<=' | '>=' ;\n\nfunction isComparableType(op: ComparisonOperator, type: Type) {\n if (op === '==' || op === '!=') {\n // equality operator\n return type.kind === 'boolean' ||\n type.kind === 'string' ||\n type.kind === 'number' ||\n type.kind === 'null' ||\n type.kind === 'value';\n } else {\n // ordering operator\n return type.kind === 'string' ||\n type.kind === 'number' ||\n type.kind === 'value';\n }\n}\n\nfunction eq(ctx, a, b) { return a === b; }\nfunction neq(ctx, a, b) { return a !== b; }\nfunction lt(ctx, a, b) { return a < b; }\nfunction gt(ctx, a, b) { return a > b; }\nfunction lteq(ctx, a, b) { return a <= b; }\nfunction gteq(ctx, a, b) { return a >= b; }\n\nfunction eqCollate(ctx, a, b, c) { return c.compare(a, b) === 0; }\nfunction neqCollate(ctx, a, b, c) { return !eqCollate(ctx, a, b, c); }\nfunction ltCollate(ctx, a, b, c) { return c.compare(a, b) < 0; }\nfunction gtCollate(ctx, a, b, c) { return c.compare(a, b) > 0; }\nfunction lteqCollate(ctx, a, b, c) { return c.compare(a, b) <= 0; }\nfunction gteqCollate(ctx, a, b, c) { return c.compare(a, b) >= 0; }\n\n/**\n * Special form for comparison operators, implementing the signatures:\n * - (T, T, ?Collator) => boolean\n * - (T, value, ?Collator) => boolean\n * - (value, T, ?Collator) => boolean\n *\n * For inequalities, T must be either value, string, or number. For ==/!=, it\n * can also be boolean or null.\n *\n * Equality semantics are equivalent to Javascript's strict equality (===/!==)\n * -- i.e., when the arguments' types don't match, == evaluates to false, != to\n * true.\n *\n * When types don't match in an ordering comparison, a runtime error is thrown.\n *\n * @private\n */\nfunction makeComparison(op: ComparisonOperator, compareBasic, compareWithCollator) {\n const isOrderComparison = op !== '==' && op !== '!=';\n\n return class Comparison implements Expression {\n type: Type;\n lhs: Expression;\n rhs: Expression;\n collator: ?Expression;\n hasUntypedArgument: boolean;\n\n constructor(lhs: Expression, rhs: Expression, collator: ?Expression) {\n this.type = BooleanType;\n this.lhs = lhs;\n this.rhs = rhs;\n this.collator = collator;\n this.hasUntypedArgument = lhs.type.kind === 'value' || rhs.type.kind === 'value';\n }\n\n static parse(args: $ReadOnlyArray, context: ParsingContext): ?Expression {\n if (args.length !== 3 && args.length !== 4)\n return context.error(`Expected two or three arguments.`);\n\n const op: ComparisonOperator = (args[0]: any);\n\n let lhs = context.parse(args[1], 1, ValueType);\n if (!lhs) return null;\n if (!isComparableType(op, lhs.type)) {\n return context.concat(1).error(`\"${op}\" comparisons are not supported for type '${toString(lhs.type)}'.`);\n }\n let rhs = context.parse(args[2], 2, ValueType);\n if (!rhs) return null;\n if (!isComparableType(op, rhs.type)) {\n return context.concat(2).error(`\"${op}\" comparisons are not supported for type '${toString(rhs.type)}'.`);\n }\n\n if (\n lhs.type.kind !== rhs.type.kind &&\n lhs.type.kind !== 'value' &&\n rhs.type.kind !== 'value'\n ) {\n return context.error(`Cannot compare types '${toString(lhs.type)}' and '${toString(rhs.type)}'.`);\n }\n\n if (isOrderComparison) {\n // typing rules specific to less/greater than operators\n if (lhs.type.kind === 'value' && rhs.type.kind !== 'value') {\n // (value, T)\n lhs = new Assertion(rhs.type, [lhs]);\n } else if (lhs.type.kind !== 'value' && rhs.type.kind === 'value') {\n // (T, value)\n rhs = new Assertion(lhs.type, [rhs]);\n }\n }\n\n let collator = null;\n if (args.length === 4) {\n if (\n lhs.type.kind !== 'string' &&\n rhs.type.kind !== 'string' &&\n lhs.type.kind !== 'value' &&\n rhs.type.kind !== 'value'\n ) {\n return context.error(`Cannot use collator to compare non-string types.`);\n }\n collator = context.parse(args[3], 3, CollatorType);\n if (!collator) return null;\n }\n\n return new Comparison(lhs, rhs, collator);\n }\n\n evaluate(ctx: EvaluationContext) {\n const lhs = this.lhs.evaluate(ctx);\n const rhs = this.rhs.evaluate(ctx);\n\n if (isOrderComparison && this.hasUntypedArgument) {\n const lt = typeOf(lhs);\n const rt = typeOf(rhs);\n // check that type is string or number, and equal\n if (lt.kind !== rt.kind || !(lt.kind === 'string' || lt.kind === 'number')) {\n throw new RuntimeError(`Expected arguments for \"${op}\" to be (string, string) or (number, number), but found (${lt.kind}, ${rt.kind}) instead.`);\n }\n }\n\n if (this.collator && !isOrderComparison && this.hasUntypedArgument) {\n const lt = typeOf(lhs);\n const rt = typeOf(rhs);\n if (lt.kind !== 'string' || rt.kind !== 'string') {\n return compareBasic(ctx, lhs, rhs);\n }\n }\n\n return this.collator ?\n compareWithCollator(ctx, lhs, rhs, this.collator.evaluate(ctx)) :\n compareBasic(ctx, lhs, rhs);\n }\n\n eachChild(fn: (_: Expression) => void) {\n fn(this.lhs);\n fn(this.rhs);\n if (this.collator) {\n fn(this.collator);\n }\n }\n\n outputDefined(): boolean {\n return true;\n }\n\n serialize() {\n const serialized = [op];\n this.eachChild(child => { serialized.push(child.serialize()); });\n return serialized;\n }\n };\n}\n\nexport const Equals = makeComparison('==', eq, eqCollate);\nexport const NotEquals = makeComparison('!=', neq, neqCollate);\nexport const LessThan = makeComparison('<', lt, ltCollate);\nexport const GreaterThan = makeComparison('>', gt, gtCollate);\nexport const LessThanOrEqual = makeComparison('<=', lteq, lteqCollate);\nexport const GreaterThanOrEqual = makeComparison('>=', gteq, gteqCollate);\n", "// @flow\n\nimport {StringType, NumberType} from '../types';\n\nimport type {Expression} from '../expression';\nimport type EvaluationContext from '../evaluation_context';\nimport type ParsingContext from '../parsing_context';\nimport type {Type} from '../types';\n\ndeclare var Intl: {\n NumberFormat: Class\n};\n\ndeclare class Intl$NumberFormat {\n constructor (\n locales?: string | string[],\n options?: NumberFormatOptions\n ): Intl$NumberFormat;\n\n static (\n locales?: string | string[],\n options?: NumberFormatOptions\n ): Intl$NumberFormat;\n\n format(a: number): string;\n\n resolvedOptions(): any;\n}\n\ntype NumberFormatOptions = {\n style?: 'decimal' | 'currency' | 'percent';\n currency?: null | string;\n minimumFractionDigits?: null | string;\n maximumFractionDigits?: null | string;\n};\n\nexport default class NumberFormat implements Expression {\n type: Type;\n number: Expression;\n locale: Expression | null; // BCP 47 language tag\n currency: Expression | null; // ISO 4217 currency code, required if style=currency\n minFractionDigits: Expression | null; // Default 0\n maxFractionDigits: Expression | null; // Default 3\n\n constructor(number: Expression,\n locale: Expression | null,\n currency: Expression | null,\n minFractionDigits: Expression | null,\n maxFractionDigits: Expression | null) {\n this.type = StringType;\n this.number = number;\n this.locale = locale;\n this.currency = currency;\n this.minFractionDigits = minFractionDigits;\n this.maxFractionDigits = maxFractionDigits;\n }\n\n static parse(args: $ReadOnlyArray, context: ParsingContext): ?Expression {\n if (args.length !== 3)\n return context.error(`Expected two arguments.`);\n\n const number = context.parse(args[1], 1, NumberType);\n if (!number) return null;\n\n const options = (args[2]: any);\n if (typeof options !== \"object\" || Array.isArray(options))\n return context.error(`NumberFormat options argument must be an object.`);\n\n let locale = null;\n if (options['locale']) {\n locale = context.parse(options['locale'], 1, StringType);\n if (!locale) return null;\n }\n\n let currency = null;\n if (options['currency']) {\n currency = context.parse(options['currency'], 1, StringType);\n if (!currency) return null;\n }\n\n let minFractionDigits = null;\n if (options['min-fraction-digits']) {\n minFractionDigits = context.parse(options['min-fraction-digits'], 1, NumberType);\n if (!minFractionDigits) return null;\n }\n\n let maxFractionDigits = null;\n if (options['max-fraction-digits']) {\n maxFractionDigits = context.parse(options['max-fraction-digits'], 1, NumberType);\n if (!maxFractionDigits) return null;\n }\n\n return new NumberFormat(number, locale, currency, minFractionDigits, maxFractionDigits);\n }\n\n evaluate(ctx: EvaluationContext) {\n return new Intl.NumberFormat(this.locale ? this.locale.evaluate(ctx) : [],\n {\n style: this.currency ? \"currency\" : \"decimal\",\n currency: this.currency ? this.currency.evaluate(ctx) : undefined,\n minimumFractionDigits: this.minFractionDigits ? this.minFractionDigits.evaluate(ctx) : undefined,\n maximumFractionDigits: this.maxFractionDigits ? this.maxFractionDigits.evaluate(ctx) : undefined,\n }).format(this.number.evaluate(ctx));\n }\n\n eachChild(fn: (_: Expression) => void) {\n fn(this.number);\n if (this.locale) {\n fn(this.locale);\n }\n if (this.currency) {\n fn(this.currency);\n }\n if (this.minFractionDigits) {\n fn(this.minFractionDigits);\n }\n if (this.maxFractionDigits) {\n fn(this.maxFractionDigits);\n }\n }\n\n outputDefined() {\n return false;\n }\n\n serialize() {\n const options = {};\n if (this.locale) {\n options['locale'] = this.locale.serialize();\n }\n if (this.currency) {\n options['currency'] = this.currency.serialize();\n }\n if (this.minFractionDigits) {\n options['min-fraction-digits'] = this.minFractionDigits.serialize();\n }\n if (this.maxFractionDigits) {\n options['max-fraction-digits'] = this.maxFractionDigits.serialize();\n }\n return [\"number-format\", this.number.serialize(), options];\n }\n}\n", "// @flow\n\nimport {NumberType, toString} from '../types';\n\nimport {typeOf} from '../values';\nimport RuntimeError from '../runtime_error';\n\nimport type {Expression} from '../expression';\nimport type ParsingContext from '../parsing_context';\nimport type EvaluationContext from '../evaluation_context';\nimport type {Type} from '../types';\n\nclass Length implements Expression {\n type: Type;\n input: Expression;\n\n constructor(input: Expression) {\n this.type = NumberType;\n this.input = input;\n }\n\n static parse(args: $ReadOnlyArray, context: ParsingContext) {\n if (args.length !== 2)\n return context.error(`Expected 1 argument, but found ${args.length - 1} instead.`);\n\n const input = context.parse(args[1], 1);\n if (!input) return null;\n\n if (input.type.kind !== 'array' && input.type.kind !== 'string' && input.type.kind !== 'value')\n return context.error(`Expected argument of type string or array, but found ${toString(input.type)} instead.`);\n\n return new Length(input);\n }\n\n evaluate(ctx: EvaluationContext) {\n const input = this.input.evaluate(ctx);\n if (typeof input === 'string') {\n return input.length;\n } else if (Array.isArray(input)) {\n return input.length;\n } else {\n throw new RuntimeError(`Expected value to be of type string or array, but found ${toString(typeOf(input))} instead.`);\n }\n }\n\n eachChild(fn: (_: Expression) => void) {\n fn(this.input);\n }\n\n outputDefined() {\n return false;\n }\n\n serialize() {\n const serialized = [\"length\"];\n this.eachChild(child => { serialized.push(child.serialize()); });\n return serialized;\n }\n}\n\nexport default Length;\n", "// @flow\n\nimport {\n type Type,\n NumberType,\n StringType,\n BooleanType,\n ColorType,\n ObjectType,\n ValueType,\n ErrorType,\n CollatorType,\n array,\n toString as typeToString\n} from '../types';\n\nimport {typeOf, Color, validateRGBA, toString as valueToString} from '../values';\nimport CompoundExpression from '../compound_expression';\nimport RuntimeError from '../runtime_error';\nimport Let from './let';\nimport Var from './var';\nimport Literal from './literal';\nimport Assertion from './assertion';\nimport Coercion from './coercion';\nimport At from './at';\nimport In from './in';\nimport IndexOf from './index_of';\nimport Match from './match';\nimport Case from './case';\nimport Slice from './slice';\nimport Step from './step';\nimport Interpolate from './interpolate';\nimport Coalesce from './coalesce';\nimport {\n Equals,\n NotEquals,\n LessThan,\n GreaterThan,\n LessThanOrEqual,\n GreaterThanOrEqual\n} from './comparison';\nimport CollatorExpression from './collator';\nimport NumberFormat from './number_format';\nimport FormatExpression from './format';\nimport ImageExpression from './image';\nimport Length from './length';\nimport Within from './within';\n\nimport type {Varargs} from '../compound_expression';\nimport type {ExpressionRegistry} from '../expression';\n\nconst expressions: ExpressionRegistry = {\n // special forms\n '==': Equals,\n '!=': NotEquals,\n '>': GreaterThan,\n '<': LessThan,\n '>=': GreaterThanOrEqual,\n '<=': LessThanOrEqual,\n 'array': Assertion,\n 'at': At,\n 'boolean': Assertion,\n 'case': Case,\n 'coalesce': Coalesce,\n 'collator': CollatorExpression,\n 'format': FormatExpression,\n 'image': ImageExpression,\n 'in': In,\n 'index-of': IndexOf,\n 'interpolate': Interpolate,\n 'interpolate-hcl': Interpolate,\n 'interpolate-lab': Interpolate,\n 'length': Length,\n 'let': Let,\n 'literal': Literal,\n 'match': Match,\n 'number': Assertion,\n 'number-format': NumberFormat,\n 'object': Assertion,\n 'slice': Slice,\n 'step': Step,\n 'string': Assertion,\n 'to-boolean': Coercion,\n 'to-color': Coercion,\n 'to-number': Coercion,\n 'to-string': Coercion,\n 'var': Var,\n 'within': Within\n};\n\nfunction rgba(ctx, [r, g, b, a]) {\n r = r.evaluate(ctx);\n g = g.evaluate(ctx);\n b = b.evaluate(ctx);\n const alpha = a ? a.evaluate(ctx) : 1;\n const error = validateRGBA(r, g, b, alpha);\n if (error) throw new RuntimeError(error);\n return new Color(r / 255 * alpha, g / 255 * alpha, b / 255 * alpha, alpha);\n}\n\nfunction has(key, obj) {\n return key in obj;\n}\n\nfunction get(key, obj) {\n const v = obj[key];\n return typeof v === 'undefined' ? null : v;\n}\n\nfunction binarySearch(v, a, i, j) {\n while (i <= j) {\n const m = (i + j) >> 1;\n if (a[m] === v)\n return true;\n if (a[m] > v)\n j = m - 1;\n else\n i = m + 1;\n }\n return false;\n}\n\nfunction varargs(type: Type): Varargs {\n return {type};\n}\n\nCompoundExpression.register(expressions, {\n 'error': [\n ErrorType,\n [StringType],\n (ctx, [v]) => { throw new RuntimeError(v.evaluate(ctx)); }\n ],\n 'typeof': [\n StringType,\n [ValueType],\n (ctx, [v]) => typeToString(typeOf(v.evaluate(ctx)))\n ],\n 'to-rgba': [\n array(NumberType, 4),\n [ColorType],\n (ctx, [v]) => {\n return v.evaluate(ctx).toArray();\n }\n ],\n 'rgb': [\n ColorType,\n [NumberType, NumberType, NumberType],\n rgba\n ],\n 'rgba': [\n ColorType,\n [NumberType, NumberType, NumberType, NumberType],\n rgba\n ],\n 'has': {\n type: BooleanType,\n overloads: [\n [\n [StringType],\n (ctx, [key]) => has(key.evaluate(ctx), ctx.properties())\n ], [\n [StringType, ObjectType],\n (ctx, [key, obj]) => has(key.evaluate(ctx), obj.evaluate(ctx))\n ]\n ]\n },\n 'get': {\n type: ValueType,\n overloads: [\n [\n [StringType],\n (ctx, [key]) => get(key.evaluate(ctx), ctx.properties())\n ], [\n [StringType, ObjectType],\n (ctx, [key, obj]) => get(key.evaluate(ctx), obj.evaluate(ctx))\n ]\n ]\n },\n 'feature-state': [\n ValueType,\n [StringType],\n (ctx, [key]) => get(key.evaluate(ctx), ctx.featureState || {})\n ],\n 'properties': [\n ObjectType,\n [],\n (ctx) => ctx.properties()\n ],\n 'geometry-type': [\n StringType,\n [],\n (ctx) => ctx.geometryType()\n ],\n 'id': [\n ValueType,\n [],\n (ctx) => ctx.id()\n ],\n 'zoom': [\n NumberType,\n [],\n (ctx) => ctx.globals.zoom\n ],\n 'heatmap-density': [\n NumberType,\n [],\n (ctx) => ctx.globals.heatmapDensity || 0\n ],\n 'line-progress': [\n NumberType,\n [],\n (ctx) => ctx.globals.lineProgress || 0\n ],\n 'accumulated': [\n ValueType,\n [],\n (ctx) => ctx.globals.accumulated === undefined ? null : ctx.globals.accumulated\n ],\n '+': [\n NumberType,\n varargs(NumberType),\n (ctx, args) => {\n let result = 0;\n for (const arg of args) {\n result += arg.evaluate(ctx);\n }\n return result;\n }\n ],\n '*': [\n NumberType,\n varargs(NumberType),\n (ctx, args) => {\n let result = 1;\n for (const arg of args) {\n result *= arg.evaluate(ctx);\n }\n return result;\n }\n ],\n '-': {\n type: NumberType,\n overloads: [\n [\n [NumberType, NumberType],\n (ctx, [a, b]) => a.evaluate(ctx) - b.evaluate(ctx)\n ], [\n [NumberType],\n (ctx, [a]) => -a.evaluate(ctx)\n ]\n ]\n },\n '/': [\n NumberType,\n [NumberType, NumberType],\n (ctx, [a, b]) => a.evaluate(ctx) / b.evaluate(ctx)\n ],\n '%': [\n NumberType,\n [NumberType, NumberType],\n (ctx, [a, b]) => a.evaluate(ctx) % b.evaluate(ctx)\n ],\n 'ln2': [\n NumberType,\n [],\n () => Math.LN2\n ],\n 'pi': [\n NumberType,\n [],\n () => Math.PI\n ],\n 'e': [\n NumberType,\n [],\n () => Math.E\n ],\n '^': [\n NumberType,\n [NumberType, NumberType],\n (ctx, [b, e]) => Math.pow(b.evaluate(ctx), e.evaluate(ctx))\n ],\n 'sqrt': [\n NumberType,\n [NumberType],\n (ctx, [x]) => Math.sqrt(x.evaluate(ctx))\n ],\n 'log10': [\n NumberType,\n [NumberType],\n (ctx, [n]) => Math.log(n.evaluate(ctx)) / Math.LN10\n ],\n 'ln': [\n NumberType,\n [NumberType],\n (ctx, [n]) => Math.log(n.evaluate(ctx))\n ],\n 'log2': [\n NumberType,\n [NumberType],\n (ctx, [n]) => Math.log(n.evaluate(ctx)) / Math.LN2\n ],\n 'sin': [\n NumberType,\n [NumberType],\n (ctx, [n]) => Math.sin(n.evaluate(ctx))\n ],\n 'cos': [\n NumberType,\n [NumberType],\n (ctx, [n]) => Math.cos(n.evaluate(ctx))\n ],\n 'tan': [\n NumberType,\n [NumberType],\n (ctx, [n]) => Math.tan(n.evaluate(ctx))\n ],\n 'asin': [\n NumberType,\n [NumberType],\n (ctx, [n]) => Math.asin(n.evaluate(ctx))\n ],\n 'acos': [\n NumberType,\n [NumberType],\n (ctx, [n]) => Math.acos(n.evaluate(ctx))\n ],\n 'atan': [\n NumberType,\n [NumberType],\n (ctx, [n]) => Math.atan(n.evaluate(ctx))\n ],\n 'min': [\n NumberType,\n varargs(NumberType),\n (ctx, args) => Math.min(...args.map(arg => arg.evaluate(ctx)))\n ],\n 'max': [\n NumberType,\n varargs(NumberType),\n (ctx, args) => Math.max(...args.map(arg => arg.evaluate(ctx)))\n ],\n 'abs': [\n NumberType,\n [NumberType],\n (ctx, [n]) => Math.abs(n.evaluate(ctx))\n ],\n 'round': [\n NumberType,\n [NumberType],\n (ctx, [n]) => {\n const v = n.evaluate(ctx);\n // Javascript's Math.round() rounds towards +Infinity for halfway\n // values, even when they're negative. It's more common to round\n // away from 0 (e.g., this is what python and C++ do)\n return v < 0 ? -Math.round(-v) : Math.round(v);\n }\n ],\n 'floor': [\n NumberType,\n [NumberType],\n (ctx, [n]) => Math.floor(n.evaluate(ctx))\n ],\n 'ceil': [\n NumberType,\n [NumberType],\n (ctx, [n]) => Math.ceil(n.evaluate(ctx))\n ],\n 'filter-==': [\n BooleanType,\n [StringType, ValueType],\n (ctx, [k, v]) => ctx.properties()[(k: any).value] === (v: any).value\n ],\n 'filter-id-==': [\n BooleanType,\n [ValueType],\n (ctx, [v]) => ctx.id() === (v: any).value\n ],\n 'filter-type-==': [\n BooleanType,\n [StringType],\n (ctx, [v]) => ctx.geometryType() === (v: any).value\n ],\n 'filter-<': [\n BooleanType,\n [StringType, ValueType],\n (ctx, [k, v]) => {\n const a = ctx.properties()[(k: any).value];\n const b = (v: any).value;\n return typeof a === typeof b && a < b;\n }\n ],\n 'filter-id-<': [\n BooleanType,\n [ValueType],\n (ctx, [v]) => {\n const a = ctx.id();\n const b = (v: any).value;\n return typeof a === typeof b && a < b;\n }\n ],\n 'filter->': [\n BooleanType,\n [StringType, ValueType],\n (ctx, [k, v]) => {\n const a = ctx.properties()[(k: any).value];\n const b = (v: any).value;\n return typeof a === typeof b && a > b;\n }\n ],\n 'filter-id->': [\n BooleanType,\n [ValueType],\n (ctx, [v]) => {\n const a = ctx.id();\n const b = (v: any).value;\n return typeof a === typeof b && a > b;\n }\n ],\n 'filter-<=': [\n BooleanType,\n [StringType, ValueType],\n (ctx, [k, v]) => {\n const a = ctx.properties()[(k: any).value];\n const b = (v: any).value;\n return typeof a === typeof b && a <= b;\n }\n ],\n 'filter-id-<=': [\n BooleanType,\n [ValueType],\n (ctx, [v]) => {\n const a = ctx.id();\n const b = (v: any).value;\n return typeof a === typeof b && a <= b;\n }\n ],\n 'filter->=': [\n BooleanType,\n [StringType, ValueType],\n (ctx, [k, v]) => {\n const a = ctx.properties()[(k: any).value];\n const b = (v: any).value;\n return typeof a === typeof b && a >= b;\n }\n ],\n 'filter-id->=': [\n BooleanType,\n [ValueType],\n (ctx, [v]) => {\n const a = ctx.id();\n const b = (v: any).value;\n return typeof a === typeof b && a >= b;\n }\n ],\n 'filter-has': [\n BooleanType,\n [ValueType],\n (ctx, [k]) => (k: any).value in ctx.properties()\n ],\n 'filter-has-id': [\n BooleanType,\n [],\n (ctx) => (ctx.id() !== null && ctx.id() !== undefined)\n ],\n 'filter-type-in': [\n BooleanType,\n [array(StringType)],\n (ctx, [v]) => (v: any).value.indexOf(ctx.geometryType()) >= 0\n ],\n 'filter-id-in': [\n BooleanType,\n [array(ValueType)],\n (ctx, [v]) => (v: any).value.indexOf(ctx.id()) >= 0\n ],\n 'filter-in-small': [\n BooleanType,\n [StringType, array(ValueType)],\n // assumes v is an array literal\n (ctx, [k, v]) => (v: any).value.indexOf(ctx.properties()[(k: any).value]) >= 0\n ],\n 'filter-in-large': [\n BooleanType,\n [StringType, array(ValueType)],\n // assumes v is a array literal with values sorted in ascending order and of a single type\n (ctx, [k, v]) => binarySearch(ctx.properties()[(k: any).value], (v: any).value, 0, (v: any).value.length - 1)\n ],\n 'all': {\n type: BooleanType,\n overloads: [\n [\n [BooleanType, BooleanType],\n (ctx, [a, b]) => a.evaluate(ctx) && b.evaluate(ctx)\n ],\n [\n varargs(BooleanType),\n (ctx, args) => {\n for (const arg of args) {\n if (!arg.evaluate(ctx))\n return false;\n }\n return true;\n }\n ]\n ]\n },\n 'any': {\n type: BooleanType,\n overloads: [\n [\n [BooleanType, BooleanType],\n (ctx, [a, b]) => a.evaluate(ctx) || b.evaluate(ctx)\n ],\n [\n varargs(BooleanType),\n (ctx, args) => {\n for (const arg of args) {\n if (arg.evaluate(ctx))\n return true;\n }\n return false;\n }\n ]\n ]\n },\n '!': [\n BooleanType,\n [BooleanType],\n (ctx, [b]) => !b.evaluate(ctx)\n ],\n 'is-supported-script': [\n BooleanType,\n [StringType],\n // At parse time this will always return true, so we need to exclude this expression with isGlobalPropertyConstant\n (ctx, [s]) => {\n const isSupportedScript = ctx.globals && ctx.globals.isSupportedScript;\n if (isSupportedScript) {\n return isSupportedScript(s.evaluate(ctx));\n }\n return true;\n }\n ],\n 'upcase': [\n StringType,\n [StringType],\n (ctx, [s]) => s.evaluate(ctx).toUpperCase()\n ],\n 'downcase': [\n StringType,\n [StringType],\n (ctx, [s]) => s.evaluate(ctx).toLowerCase()\n ],\n 'concat': [\n StringType,\n varargs(ValueType),\n (ctx, args) => args.map(arg => valueToString(arg.evaluate(ctx))).join('')\n ],\n 'resolved-locale': [\n StringType,\n [CollatorType],\n (ctx, [collator]) => collator.evaluate(ctx).resolvedLocale()\n ]\n});\n\nexport default expressions;\n", "// @flow\n\n/**\n * A type used for returning and propagating errors. The first element of the union\n * represents success and contains a value, and the second represents an error and\n * contains an error value.\n * @private\n */\nexport type Result =\n | {| result: 'success', value: T |}\n | {| result: 'error', value: E |};\n\nexport function success(value: T): Result {\n return {result: 'success', value};\n}\n\nexport function error(value: E): Result {\n return {result: 'error', value};\n}\n", "// @flow\n\nimport type {StylePropertySpecification} from '../style-spec';\n\nexport function supportsPropertyExpression(spec: StylePropertySpecification): boolean {\n return spec['property-type'] === 'data-driven' || spec['property-type'] === 'cross-faded-data-driven';\n}\n\nexport function supportsZoomExpression(spec: StylePropertySpecification): boolean {\n return !!spec.expression && spec.expression.parameters.indexOf('zoom') > -1;\n}\n\nexport function supportsInterpolation(spec: StylePropertySpecification): boolean {\n return !!spec.expression && spec.expression.interpolated;\n}\n", "// @flow\n\nexport default function getType(val: mixed): string {\n if (val instanceof Number) {\n return 'number';\n } else if (val instanceof String) {\n return 'string';\n } else if (val instanceof Boolean) {\n return 'boolean';\n } else if (Array.isArray(val)) {\n return 'array';\n } else if (val === null) {\n return 'null';\n } else {\n return typeof val;\n }\n}\n", "\nimport * as colorSpaces from '../util/color_spaces';\nimport Color from '../util/color';\nimport extend from '../util/extend';\nimport getType from '../util/get_type';\nimport * as interpolate from '../util/interpolate';\nimport Interpolate from '../expression/definitions/interpolate';\nimport Formatted from '../expression/types/formatted';\nimport ResolvedImage from '../expression/types/resolved_image';\nimport {supportsInterpolation} from '../util/properties';\nimport {findStopLessThanOrEqualTo} from '../expression/stops';\n\nexport function isFunction(value) {\n return typeof value === 'object' && value !== null && !Array.isArray(value);\n}\n\nfunction identityFunction(x) {\n return x;\n}\n\nexport function createFunction(parameters, propertySpec) {\n const isColor = propertySpec.type === 'color';\n const zoomAndFeatureDependent = parameters.stops && typeof parameters.stops[0][0] === 'object';\n const featureDependent = zoomAndFeatureDependent || parameters.property !== undefined;\n const zoomDependent = zoomAndFeatureDependent || !featureDependent;\n const type = parameters.type || (supportsInterpolation(propertySpec) ? 'exponential' : 'interval');\n\n if (isColor) {\n parameters = extend({}, parameters);\n\n if (parameters.stops) {\n parameters.stops = parameters.stops.map((stop) => {\n return [stop[0], Color.parse(stop[1])];\n });\n }\n\n if (parameters.default) {\n parameters.default = Color.parse(parameters.default);\n } else {\n parameters.default = Color.parse(propertySpec.default);\n }\n }\n\n if (parameters.colorSpace && parameters.colorSpace !== 'rgb' && !colorSpaces[parameters.colorSpace]) { // eslint-disable-line import/namespace\n throw new Error(`Unknown color space: ${parameters.colorSpace}`);\n }\n\n let innerFun;\n let hashedStops;\n let categoricalKeyType;\n if (type === 'exponential') {\n innerFun = evaluateExponentialFunction;\n } else if (type === 'interval') {\n innerFun = evaluateIntervalFunction;\n } else if (type === 'categorical') {\n innerFun = evaluateCategoricalFunction;\n\n // For categorical functions, generate an Object as a hashmap of the stops for fast searching\n hashedStops = Object.create(null);\n for (const stop of parameters.stops) {\n hashedStops[stop[0]] = stop[1];\n }\n\n // Infer key type based on first stop key-- used to encforce strict type checking later\n categoricalKeyType = typeof parameters.stops[0][0];\n\n } else if (type === 'identity') {\n innerFun = evaluateIdentityFunction;\n } else {\n throw new Error(`Unknown function type \"${type}\"`);\n }\n\n if (zoomAndFeatureDependent) {\n const featureFunctions = {};\n const zoomStops = [];\n for (let s = 0; s < parameters.stops.length; s++) {\n const stop = parameters.stops[s];\n const zoom = stop[0].zoom;\n if (featureFunctions[zoom] === undefined) {\n featureFunctions[zoom] = {\n zoom,\n type: parameters.type,\n property: parameters.property,\n default: parameters.default,\n stops: []\n };\n zoomStops.push(zoom);\n }\n featureFunctions[zoom].stops.push([stop[0].value, stop[1]]);\n }\n\n const featureFunctionStops = [];\n for (const z of zoomStops) {\n featureFunctionStops.push([featureFunctions[z].zoom, createFunction(featureFunctions[z], propertySpec)]);\n }\n\n const interpolationType = {name: 'linear'};\n return {\n kind: 'composite',\n interpolationType,\n interpolationFactor: Interpolate.interpolationFactor.bind(undefined, interpolationType),\n zoomStops: featureFunctionStops.map(s => s[0]),\n evaluate({zoom}, properties) {\n return evaluateExponentialFunction({\n stops: featureFunctionStops,\n base: parameters.base\n }, propertySpec, zoom).evaluate(zoom, properties);\n }\n };\n } else if (zoomDependent) {\n const interpolationType = type === 'exponential' ?\n {name: 'exponential', base: parameters.base !== undefined ? parameters.base : 1} : null;\n return {\n kind: 'camera',\n interpolationType,\n interpolationFactor: Interpolate.interpolationFactor.bind(undefined, interpolationType),\n zoomStops: parameters.stops.map(s => s[0]),\n evaluate: ({zoom}) => innerFun(parameters, propertySpec, zoom, hashedStops, categoricalKeyType)\n };\n } else {\n return {\n kind: 'source',\n evaluate(_, feature) {\n const value = feature && feature.properties ? feature.properties[parameters.property] : undefined;\n if (value === undefined) {\n return coalesce(parameters.default, propertySpec.default);\n }\n return innerFun(parameters, propertySpec, value, hashedStops, categoricalKeyType);\n }\n };\n }\n}\n\nfunction coalesce(a, b, c) {\n if (a !== undefined) return a;\n if (b !== undefined) return b;\n if (c !== undefined) return c;\n}\n\nfunction evaluateCategoricalFunction(parameters, propertySpec, input, hashedStops, keyType) {\n const evaluated = typeof input === keyType ? hashedStops[input] : undefined; // Enforce strict typing on input\n return coalesce(evaluated, parameters.default, propertySpec.default);\n}\n\nfunction evaluateIntervalFunction(parameters, propertySpec, input) {\n // Edge cases\n if (getType(input) !== 'number') return coalesce(parameters.default, propertySpec.default);\n const n = parameters.stops.length;\n if (n === 1) return parameters.stops[0][1];\n if (input <= parameters.stops[0][0]) return parameters.stops[0][1];\n if (input >= parameters.stops[n - 1][0]) return parameters.stops[n - 1][1];\n\n const index = findStopLessThanOrEqualTo(parameters.stops.map((stop) => stop[0]), input);\n\n return parameters.stops[index][1];\n}\n\nfunction evaluateExponentialFunction(parameters, propertySpec, input) {\n const base = parameters.base !== undefined ? parameters.base : 1;\n\n // Edge cases\n if (getType(input) !== 'number') return coalesce(parameters.default, propertySpec.default);\n const n = parameters.stops.length;\n if (n === 1) return parameters.stops[0][1];\n if (input <= parameters.stops[0][0]) return parameters.stops[0][1];\n if (input >= parameters.stops[n - 1][0]) return parameters.stops[n - 1][1];\n\n const index = findStopLessThanOrEqualTo(parameters.stops.map((stop) => stop[0]), input);\n const t = interpolationFactor(\n input, base,\n parameters.stops[index][0],\n parameters.stops[index + 1][0]);\n\n const outputLower = parameters.stops[index][1];\n const outputUpper = parameters.stops[index + 1][1];\n let interp = interpolate[propertySpec.type] || identityFunction; // eslint-disable-line import/namespace\n\n if (parameters.colorSpace && parameters.colorSpace !== 'rgb') {\n const colorspace = colorSpaces[parameters.colorSpace]; // eslint-disable-line import/namespace\n interp = (a, b) => colorspace.reverse(colorspace.interpolate(colorspace.forward(a), colorspace.forward(b), t));\n }\n\n if (typeof outputLower.evaluate === 'function') {\n return {\n evaluate(...args) {\n const evaluatedLower = outputLower.evaluate.apply(undefined, args);\n const evaluatedUpper = outputUpper.evaluate.apply(undefined, args);\n // Special case for fill-outline-color, which has no spec default.\n if (evaluatedLower === undefined || evaluatedUpper === undefined) {\n return undefined;\n }\n return interp(evaluatedLower, evaluatedUpper, t);\n }\n };\n }\n\n return interp(outputLower, outputUpper, t);\n}\n\nfunction evaluateIdentityFunction(parameters, propertySpec, input) {\n if (propertySpec.type === 'color') {\n input = Color.parse(input);\n } else if (propertySpec.type === 'formatted') {\n input = Formatted.fromString(input.toString());\n } else if (propertySpec.type === 'resolvedImage') {\n input = ResolvedImage.fromString(input.toString());\n } else if (getType(input) !== propertySpec.type && (propertySpec.type !== 'enum' || !propertySpec.values[input])) {\n input = undefined;\n }\n return coalesce(input, parameters.default, propertySpec.default);\n}\n\n/**\n * Returns a ratio that can be used to interpolate between exponential function\n * stops.\n *\n * How it works:\n * Two consecutive stop values define a (scaled and shifted) exponential\n * function `f(x) = a * base^x + b`, where `base` is the user-specified base,\n * and `a` and `b` are constants affording sufficient degrees of freedom to fit\n * the function to the given stops.\n *\n * Here's a bit of algebra that lets us compute `f(x)` directly from the stop\n * values without explicitly solving for `a` and `b`:\n *\n * First stop value: `f(x0) = y0 = a * base^x0 + b`\n * Second stop value: `f(x1) = y1 = a * base^x1 + b`\n * => `y1 - y0 = a(base^x1 - base^x0)`\n * => `a = (y1 - y0)/(base^x1 - base^x0)`\n *\n * Desired value: `f(x) = y = a * base^x + b`\n * => `f(x) = y0 + a * (base^x - base^x0)`\n *\n * From the above, we can replace the `a` in `a * (base^x - base^x0)` and do a\n * little algebra:\n * ```\n * a * (base^x - base^x0) = (y1 - y0)/(base^x1 - base^x0) * (base^x - base^x0)\n * = (y1 - y0) * (base^x - base^x0) / (base^x1 - base^x0)\n * ```\n *\n * If we let `(base^x - base^x0) / (base^x1 base^x0)`, then we have\n * `f(x) = y0 + (y1 - y0) * ratio`. In other words, `ratio` may be treated as\n * an interpolation factor between the two stops' output values.\n *\n * (Note: a slightly different form for `ratio`,\n * `(base^(x-x0) - 1) / (base^(x1-x0) - 1) `, is equivalent, but requires fewer\n * expensive `Math.pow()` operations.)\n *\n * @private\n */\nfunction interpolationFactor(input, base, lowerValue, upperValue) {\n const difference = upperValue - lowerValue;\n const progress = input - lowerValue;\n\n if (difference === 0) {\n return 0;\n } else if (base === 1) {\n return progress / difference;\n } else {\n return (Math.pow(base, progress) - 1) / (Math.pow(base, difference) - 1);\n }\n}\n", "// @flow\n\nimport assert from 'assert';\n\nimport extend from '../util/extend';\nimport ParsingError from './parsing_error';\nimport ParsingContext from './parsing_context';\nimport EvaluationContext from './evaluation_context';\nimport CompoundExpression from './compound_expression';\nimport Step from './definitions/step';\nimport Interpolate from './definitions/interpolate';\nimport Coalesce from './definitions/coalesce';\nimport Let from './definitions/let';\nimport definitions from './definitions';\nimport * as isConstant from './is_constant';\nimport RuntimeError from './runtime_error';\nimport {success, error} from '../util/result';\nimport {supportsPropertyExpression, supportsZoomExpression, supportsInterpolation} from '../util/properties';\n\nimport type {Type, EvaluationKind} from './types';\nimport type {Value} from './values';\nimport type {Expression} from './expression';\nimport type {StylePropertySpecification} from '../style-spec';\nimport type {Result} from '../util/result';\nimport type {InterpolationType} from './definitions/interpolate';\nimport type {PropertyValueSpecification} from '../types';\nimport type {FormattedSection} from './types/formatted';\nimport type Point from '@mapbox/point-geometry';\nimport type {CanonicalTileID} from '../../source/tile_id';\n\nexport type Feature = {\n +type: 1 | 2 | 3 | 'Unknown' | 'Point' | 'MultiPoint' | 'LineString' | 'MultiLineString' | 'Polygon' | 'MultiPolygon',\n +id?: any,\n +properties: {[_: string]: any},\n +patterns?: {[_: string]: {\"min\": string, \"mid\": string, \"max\": string}},\n +geometry?: Array>\n};\n\nexport type FeatureState = {[_: string]: any};\n\nexport type GlobalProperties = $ReadOnly<{\n zoom: number,\n heatmapDensity?: number,\n lineProgress?: number,\n isSupportedScript?: (_: string) => boolean,\n accumulated?: Value\n}>;\n\nexport class StyleExpression {\n expression: Expression;\n\n _evaluator: EvaluationContext;\n _defaultValue: Value;\n _warningHistory: {[key: string]: boolean};\n _enumValues: ?{[_: string]: any};\n\n constructor(expression: Expression, propertySpec: ?StylePropertySpecification) {\n this.expression = expression;\n this._warningHistory = {};\n this._evaluator = new EvaluationContext();\n this._defaultValue = propertySpec ? getDefaultValue(propertySpec) : null;\n this._enumValues = propertySpec && propertySpec.type === 'enum' ? propertySpec.values : null;\n }\n\n evaluateWithoutErrorHandling(globals: GlobalProperties, feature?: Feature, featureState?: FeatureState, canonical?: CanonicalTileID, availableImages?: Array, formattedSection?: FormattedSection): any {\n this._evaluator.globals = globals;\n this._evaluator.feature = feature;\n this._evaluator.featureState = featureState;\n this._evaluator.canonical = canonical;\n this._evaluator.availableImages = availableImages || null;\n this._evaluator.formattedSection = formattedSection;\n\n return this.expression.evaluate(this._evaluator);\n }\n\n evaluate(globals: GlobalProperties, feature?: Feature, featureState?: FeatureState, canonical?: CanonicalTileID, availableImages?: Array, formattedSection?: FormattedSection): any {\n this._evaluator.globals = globals;\n this._evaluator.feature = feature || null;\n this._evaluator.featureState = featureState || null;\n this._evaluator.canonical = canonical;\n this._evaluator.availableImages = availableImages || null;\n this._evaluator.formattedSection = formattedSection || null;\n\n try {\n const val = this.expression.evaluate(this._evaluator);\n // eslint-disable-next-line no-self-compare\n if (val === null || val === undefined || (typeof val === 'number' && val !== val)) {\n return this._defaultValue;\n }\n if (this._enumValues && !(val in this._enumValues)) {\n throw new RuntimeError(`Expected value to be one of ${Object.keys(this._enumValues).map(v => JSON.stringify(v)).join(', ')}, but found ${JSON.stringify(val)} instead.`);\n }\n return val;\n } catch (e) {\n if (!this._warningHistory[e.message]) {\n this._warningHistory[e.message] = true;\n if (typeof console !== 'undefined') {\n console.warn(e.message);\n }\n }\n return this._defaultValue;\n }\n }\n}\n\nexport function isExpression(expression: mixed) {\n return Array.isArray(expression) && expression.length > 0 &&\n typeof expression[0] === 'string' && expression[0] in definitions;\n}\n\n/**\n * Parse and typecheck the given style spec JSON expression. If\n * options.defaultValue is provided, then the resulting StyleExpression's\n * `evaluate()` method will handle errors by logging a warning (once per\n * message) and returning the default value. Otherwise, it will throw\n * evaluation errors.\n *\n * @private\n */\nexport function createExpression(expression: mixed, propertySpec: ?StylePropertySpecification): Result> {\n const parser = new ParsingContext(definitions, [], propertySpec ? getExpectedType(propertySpec) : undefined);\n\n // For string-valued properties, coerce to string at the top level rather than asserting.\n const parsed = parser.parse(expression, undefined, undefined, undefined,\n propertySpec && propertySpec.type === 'string' ? {typeAnnotation: 'coerce'} : undefined);\n\n if (!parsed) {\n assert(parser.errors.length > 0);\n return error(parser.errors);\n }\n\n return success(new StyleExpression(parsed, propertySpec));\n}\n\nexport class ZoomConstantExpression {\n kind: Kind;\n isStateDependent: boolean;\n _styleExpression: StyleExpression;\n\n constructor(kind: Kind, expression: StyleExpression) {\n this.kind = kind;\n this._styleExpression = expression;\n this.isStateDependent = kind !== ('constant': EvaluationKind) && !isConstant.isStateConstant(expression.expression);\n }\n\n evaluateWithoutErrorHandling(globals: GlobalProperties, feature?: Feature, featureState?: FeatureState, canonical?: CanonicalTileID, availableImages?: Array, formattedSection?: FormattedSection): any {\n return this._styleExpression.evaluateWithoutErrorHandling(globals, feature, featureState, canonical, availableImages, formattedSection);\n }\n\n evaluate(globals: GlobalProperties, feature?: Feature, featureState?: FeatureState, canonical?: CanonicalTileID, availableImages?: Array, formattedSection?: FormattedSection): any {\n return this._styleExpression.evaluate(globals, feature, featureState, canonical, availableImages, formattedSection);\n }\n}\n\nexport class ZoomDependentExpression {\n kind: Kind;\n zoomStops: Array;\n isStateDependent: boolean;\n\n _styleExpression: StyleExpression;\n interpolationType: ?InterpolationType;\n\n constructor(kind: Kind, expression: StyleExpression, zoomStops: Array, interpolationType?: InterpolationType) {\n this.kind = kind;\n this.zoomStops = zoomStops;\n this._styleExpression = expression;\n this.isStateDependent = kind !== ('camera': EvaluationKind) && !isConstant.isStateConstant(expression.expression);\n this.interpolationType = interpolationType;\n }\n\n evaluateWithoutErrorHandling(globals: GlobalProperties, feature?: Feature, featureState?: FeatureState, canonical?: CanonicalTileID, availableImages?: Array, formattedSection?: FormattedSection): any {\n return this._styleExpression.evaluateWithoutErrorHandling(globals, feature, featureState, canonical, availableImages, formattedSection);\n }\n\n evaluate(globals: GlobalProperties, feature?: Feature, featureState?: FeatureState, canonical?: CanonicalTileID, availableImages?: Array, formattedSection?: FormattedSection): any {\n return this._styleExpression.evaluate(globals, feature, featureState, canonical, availableImages, formattedSection);\n }\n\n interpolationFactor(input: number, lower: number, upper: number): number {\n if (this.interpolationType) {\n return Interpolate.interpolationFactor(this.interpolationType, input, lower, upper);\n } else {\n return 0;\n }\n }\n}\n\nexport type ConstantExpression = {\n kind: 'constant',\n +evaluate: (globals: GlobalProperties, feature?: Feature, featureState?: FeatureState, canonical?: CanonicalTileID, availableImages?: Array) => any,\n}\n\nexport type SourceExpression = {\n kind: 'source',\n isStateDependent: boolean,\n +evaluate: (globals: GlobalProperties, feature?: Feature, featureState?: FeatureState, canonical?: CanonicalTileID, availableImages?: Array, formattedSection?: FormattedSection) => any,\n};\n\nexport type CameraExpression = {\n kind: 'camera',\n +evaluate: (globals: GlobalProperties, feature?: Feature, featureState?: FeatureState, canonical?: CanonicalTileID, availableImages?: Array) => any,\n +interpolationFactor: (input: number, lower: number, upper: number) => number,\n zoomStops: Array,\n interpolationType: ?InterpolationType\n};\n\nexport type CompositeExpression = {\n kind: 'composite',\n isStateDependent: boolean,\n +evaluate: (globals: GlobalProperties, feature?: Feature, featureState?: FeatureState, canonical?: CanonicalTileID, availableImages?: Array, formattedSection?: FormattedSection) => any,\n +interpolationFactor: (input: number, lower: number, upper: number) => number,\n zoomStops: Array,\n interpolationType: ?InterpolationType\n};\n\nexport type StylePropertyExpression =\n | ConstantExpression\n | SourceExpression\n | CameraExpression\n | CompositeExpression;\n\nexport function createPropertyExpression(expression: mixed, propertySpec: StylePropertySpecification): Result> {\n expression = createExpression(expression, propertySpec);\n if (expression.result === 'error') {\n return expression;\n }\n\n const parsed = expression.value.expression;\n\n const isFeatureConstant = isConstant.isFeatureConstant(parsed);\n if (!isFeatureConstant && !supportsPropertyExpression(propertySpec)) {\n return error([new ParsingError('', 'data expressions not supported')]);\n }\n\n const isZoomConstant = isConstant.isGlobalPropertyConstant(parsed, ['zoom']);\n if (!isZoomConstant && !supportsZoomExpression(propertySpec)) {\n return error([new ParsingError('', 'zoom expressions not supported')]);\n }\n\n const zoomCurve = findZoomCurve(parsed);\n if (!zoomCurve && !isZoomConstant) {\n return error([new ParsingError('', '\"zoom\" expression may only be used as input to a top-level \"step\" or \"interpolate\" expression.')]);\n } else if (zoomCurve instanceof ParsingError) {\n return error([zoomCurve]);\n } else if (zoomCurve instanceof Interpolate && !supportsInterpolation(propertySpec)) {\n return error([new ParsingError('', '\"interpolate\" expressions cannot be used with this property')]);\n }\n\n if (!zoomCurve) {\n return success(isFeatureConstant ?\n (new ZoomConstantExpression('constant', expression.value): ConstantExpression) :\n (new ZoomConstantExpression('source', expression.value): SourceExpression));\n }\n\n const interpolationType = zoomCurve instanceof Interpolate ? zoomCurve.interpolation : undefined;\n\n return success(isFeatureConstant ?\n (new ZoomDependentExpression('camera', expression.value, zoomCurve.labels, interpolationType): CameraExpression) :\n (new ZoomDependentExpression('composite', expression.value, zoomCurve.labels, interpolationType): CompositeExpression));\n}\n\nimport {isFunction, createFunction} from '../function';\nimport {Color} from './values';\n\n// serialization wrapper for old-style stop functions normalized to the\n// expression interface\nexport class StylePropertyFunction {\n _parameters: PropertyValueSpecification;\n _specification: StylePropertySpecification;\n\n kind: EvaluationKind;\n evaluate: (globals: GlobalProperties, feature?: Feature) => any;\n interpolationFactor: ?(input: number, lower: number, upper: number) => number;\n zoomStops: ?Array;\n\n constructor(parameters: PropertyValueSpecification, specification: StylePropertySpecification) {\n this._parameters = parameters;\n this._specification = specification;\n extend(this, createFunction(this._parameters, this._specification));\n }\n\n static deserialize(serialized: {_parameters: PropertyValueSpecification, _specification: StylePropertySpecification}) {\n return ((new StylePropertyFunction(serialized._parameters, serialized._specification)): StylePropertyFunction);\n }\n\n static serialize(input: StylePropertyFunction) {\n return {\n _parameters: input._parameters,\n _specification: input._specification\n };\n }\n}\n\nexport function normalizePropertyExpression(value: PropertyValueSpecification, specification: StylePropertySpecification): StylePropertyExpression {\n if (isFunction(value)) {\n return (new StylePropertyFunction(value, specification): any);\n\n } else if (isExpression(value)) {\n const expression = createPropertyExpression(value, specification);\n if (expression.result === 'error') {\n // this should have been caught in validation\n throw new Error(expression.value.map(err => `${err.key}: ${err.message}`).join(', '));\n }\n return expression.value;\n\n } else {\n let constant: any = value;\n if (typeof value === 'string' && specification.type === 'color') {\n constant = Color.parse(value);\n }\n return {\n kind: 'constant',\n evaluate: () => constant\n };\n }\n}\n\n// Zoom-dependent expressions may only use [\"zoom\"] as the input to a top-level \"step\" or \"interpolate\"\n// expression (collectively referred to as a \"curve\"). The curve may be wrapped in one or more \"let\" or\n// \"coalesce\" expressions.\nfunction findZoomCurve(expression: Expression): Step | Interpolate | ParsingError | null {\n let result = null;\n if (expression instanceof Let) {\n result = findZoomCurve(expression.result);\n\n } else if (expression instanceof Coalesce) {\n for (const arg of expression.args) {\n result = findZoomCurve(arg);\n if (result) {\n break;\n }\n }\n\n } else if ((expression instanceof Step || expression instanceof Interpolate) &&\n expression.input instanceof CompoundExpression &&\n expression.input.name === 'zoom') {\n\n result = expression;\n }\n\n if (result instanceof ParsingError) {\n return result;\n }\n\n expression.eachChild((child) => {\n const childResult = findZoomCurve(child);\n if (childResult instanceof ParsingError) {\n result = childResult;\n } else if (!result && childResult) {\n result = new ParsingError('', '\"zoom\" expression may only be used as input to a top-level \"step\" or \"interpolate\" expression.');\n } else if (result && childResult && result !== childResult) {\n result = new ParsingError('', 'Only one zoom-based \"step\" or \"interpolate\" subexpression may be used in an expression.');\n }\n });\n\n return result;\n}\n\nimport {ColorType, StringType, NumberType, BooleanType, ValueType, FormattedType, ResolvedImageType, array} from './types';\n\nfunction getExpectedType(spec: StylePropertySpecification): Type {\n const types = {\n color: ColorType,\n string: StringType,\n number: NumberType,\n enum: StringType,\n boolean: BooleanType,\n formatted: FormattedType,\n resolvedImage: ResolvedImageType\n };\n\n if (spec.type === 'array') {\n return array(types[spec.value] || ValueType, spec.length);\n }\n\n return types[spec.type];\n}\n\nfunction getDefaultValue(spec: StylePropertySpecification): Value {\n if (spec.type === 'color' && isFunction(spec.default)) {\n // Special case for heatmap-color: it uses the 'default:' to define a\n // default color ramp, but createExpression expects a simple value to fall\n // back to in case of runtime errors\n return new Color(0, 0, 0, 0);\n } else if (spec.type === 'color') {\n return Color.parse(spec.default) || null;\n } else if (spec.default === undefined) {\n return null;\n } else {\n return spec.default;\n }\n}\n", "\nimport ValidationError from '../error/validation_error';\nimport getType from '../util/get_type';\nimport validateSpec from './validate';\n\nexport default function validateObject(options) {\n const key = options.key;\n const object = options.value;\n const elementSpecs = options.valueSpec || {};\n const elementValidators = options.objectElementValidators || {};\n const style = options.style;\n const styleSpec = options.styleSpec;\n let errors = [];\n\n const type = getType(object);\n if (type !== 'object') {\n return [new ValidationError(key, object, `object expected, ${type} found`)];\n }\n\n for (const objectKey in object) {\n const elementSpecKey = objectKey.split('.')[0]; // treat 'paint.*' as 'paint'\n const elementSpec = elementSpecs[elementSpecKey] || elementSpecs['*'];\n\n let validateElement;\n if (elementValidators[elementSpecKey]) {\n validateElement = elementValidators[elementSpecKey];\n } else if (elementSpecs[elementSpecKey]) {\n validateElement = validateSpec;\n } else if (elementValidators['*']) {\n validateElement = elementValidators['*'];\n } else if (elementSpecs['*']) {\n validateElement = validateSpec;\n } else {\n errors.push(new ValidationError(key, object[objectKey], `unknown property \"${objectKey}\"`));\n continue;\n }\n\n errors = errors.concat(validateElement({\n key: (key ? `${key}.` : key) + objectKey,\n value: object[objectKey],\n valueSpec: elementSpec,\n style,\n styleSpec,\n object,\n objectKey\n }, object));\n }\n\n for (const elementSpecKey in elementSpecs) {\n // Don't check `required` when there's a custom validator for that property.\n if (elementValidators[elementSpecKey]) {\n continue;\n }\n\n if (elementSpecs[elementSpecKey].required && elementSpecs[elementSpecKey]['default'] === undefined && object[elementSpecKey] === undefined) {\n errors.push(new ValidationError(key, object, `missing required property \"${elementSpecKey}\"`));\n }\n }\n\n return errors;\n}\n", "\nimport getType from '../util/get_type';\nimport validate from './validate';\nimport ValidationError from '../error/validation_error';\n\nexport default function validateArray(options) {\n const array = options.value;\n const arraySpec = options.valueSpec;\n const style = options.style;\n const styleSpec = options.styleSpec;\n const key = options.key;\n const validateArrayElement = options.arrayElementValidator || validate;\n\n if (getType(array) !== 'array') {\n return [new ValidationError(key, array, `array expected, ${getType(array)} found`)];\n }\n\n if (arraySpec.length && array.length !== arraySpec.length) {\n return [new ValidationError(key, array, `array length ${arraySpec.length} expected, length ${array.length} found`)];\n }\n\n if (arraySpec['min-length'] && array.length < arraySpec['min-length']) {\n return [new ValidationError(key, array, `array length at least ${arraySpec['min-length']} expected, length ${array.length} found`)];\n }\n\n let arrayElementSpec = {\n \"type\": arraySpec.value,\n \"values\": arraySpec.values\n };\n\n if (styleSpec.$version < 7) {\n arrayElementSpec.function = arraySpec.function;\n }\n\n if (getType(arraySpec.value) === 'object') {\n arrayElementSpec = arraySpec.value;\n }\n\n let errors = [];\n for (let i = 0; i < array.length; i++) {\n errors = errors.concat(validateArrayElement({\n array,\n arrayIndex: i,\n value: array[i],\n valueSpec: arrayElementSpec,\n style,\n styleSpec,\n key: `${key}[${i}]`\n }));\n }\n return errors;\n}\n", "\nimport getType from '../util/get_type';\nimport ValidationError from '../error/validation_error';\n\nexport default function validateNumber(options) {\n const key = options.key;\n const value = options.value;\n const valueSpec = options.valueSpec;\n let type = getType(value);\n\n // eslint-disable-next-line no-self-compare\n if (type === 'number' && value !== value) {\n type = 'NaN';\n }\n\n if (type !== 'number') {\n return [new ValidationError(key, value, `number expected, ${type} found`)];\n }\n\n if ('minimum' in valueSpec && value < valueSpec.minimum) {\n return [new ValidationError(key, value, `${value} is less than the minimum value ${valueSpec.minimum}`)];\n }\n\n if ('maximum' in valueSpec && value > valueSpec.maximum) {\n return [new ValidationError(key, value, `${value} is greater than the maximum value ${valueSpec.maximum}`)];\n }\n\n return [];\n}\n", "\nimport ValidationError from '../error/validation_error';\nimport getType from '../util/get_type';\nimport validate from './validate';\nimport validateObject from './validate_object';\nimport validateArray from './validate_array';\nimport validateNumber from './validate_number';\nimport {isExpression} from '../expression';\nimport {unbundle, deepUnbundle} from '../util/unbundle_jsonlint';\nimport {\n supportsPropertyExpression,\n supportsZoomExpression,\n supportsInterpolation\n} from '../util/properties';\n\nexport default function validateFunction(options) {\n const functionValueSpec = options.valueSpec;\n const functionType = unbundle(options.value.type);\n let stopKeyType;\n let stopDomainValues = {};\n let previousStopDomainValue;\n let previousStopDomainZoom;\n\n const isZoomFunction = functionType !== 'categorical' && options.value.property === undefined;\n const isPropertyFunction = !isZoomFunction;\n const isZoomAndPropertyFunction =\n getType(options.value.stops) === 'array' &&\n getType(options.value.stops[0]) === 'array' &&\n getType(options.value.stops[0][0]) === 'object';\n\n const errors = validateObject({\n key: options.key,\n value: options.value,\n valueSpec: options.styleSpec.function,\n style: options.style,\n styleSpec: options.styleSpec,\n objectElementValidators: {\n stops: validateFunctionStops,\n default: validateFunctionDefault\n }\n });\n\n if (functionType === 'identity' && isZoomFunction) {\n errors.push(new ValidationError(options.key, options.value, 'missing required property \"property\"'));\n }\n\n if (functionType !== 'identity' && !options.value.stops) {\n errors.push(new ValidationError(options.key, options.value, 'missing required property \"stops\"'));\n }\n\n if (functionType === 'exponential' && options.valueSpec.expression && !supportsInterpolation(options.valueSpec)) {\n errors.push(new ValidationError(options.key, options.value, 'exponential functions not supported'));\n }\n\n if (options.styleSpec.$version >= 8) {\n if (isPropertyFunction && !supportsPropertyExpression(options.valueSpec)) {\n errors.push(new ValidationError(options.key, options.value, 'property functions not supported'));\n } else if (isZoomFunction && !supportsZoomExpression(options.valueSpec)) {\n errors.push(new ValidationError(options.key, options.value, 'zoom functions not supported'));\n }\n }\n\n if ((functionType === 'categorical' || isZoomAndPropertyFunction) && options.value.property === undefined) {\n errors.push(new ValidationError(options.key, options.value, '\"property\" property is required'));\n }\n\n return errors;\n\n function validateFunctionStops(options) {\n if (functionType === 'identity') {\n return [new ValidationError(options.key, options.value, 'identity function may not have a \"stops\" property')];\n }\n\n let errors = [];\n const value = options.value;\n\n errors = errors.concat(validateArray({\n key: options.key,\n value,\n valueSpec: options.valueSpec,\n style: options.style,\n styleSpec: options.styleSpec,\n arrayElementValidator: validateFunctionStop\n }));\n\n if (getType(value) === 'array' && value.length === 0) {\n errors.push(new ValidationError(options.key, value, 'array must have at least one stop'));\n }\n\n return errors;\n }\n\n function validateFunctionStop(options) {\n let errors = [];\n const value = options.value;\n const key = options.key;\n\n if (getType(value) !== 'array') {\n return [new ValidationError(key, value, `array expected, ${getType(value)} found`)];\n }\n\n if (value.length !== 2) {\n return [new ValidationError(key, value, `array length 2 expected, length ${value.length} found`)];\n }\n\n if (isZoomAndPropertyFunction) {\n if (getType(value[0]) !== 'object') {\n return [new ValidationError(key, value, `object expected, ${getType(value[0])} found`)];\n }\n if (value[0].zoom === undefined) {\n return [new ValidationError(key, value, 'object stop key must have zoom')];\n }\n if (value[0].value === undefined) {\n return [new ValidationError(key, value, 'object stop key must have value')];\n }\n if (previousStopDomainZoom && previousStopDomainZoom > unbundle(value[0].zoom)) {\n return [new ValidationError(key, value[0].zoom, 'stop zoom values must appear in ascending order')];\n }\n if (unbundle(value[0].zoom) !== previousStopDomainZoom) {\n previousStopDomainZoom = unbundle(value[0].zoom);\n previousStopDomainValue = undefined;\n stopDomainValues = {};\n }\n errors = errors.concat(validateObject({\n key: `${key}[0]`,\n value: value[0],\n valueSpec: {zoom: {}},\n style: options.style,\n styleSpec: options.styleSpec,\n objectElementValidators: {zoom: validateNumber, value: validateStopDomainValue}\n }));\n } else {\n errors = errors.concat(validateStopDomainValue({\n key: `${key}[0]`,\n value: value[0],\n valueSpec: {},\n style: options.style,\n styleSpec: options.styleSpec\n }, value));\n }\n\n if (isExpression(deepUnbundle(value[1]))) {\n return errors.concat([new ValidationError(`${key}[1]`, value[1], 'expressions are not allowed in function stops.')]);\n }\n\n return errors.concat(validate({\n key: `${key}[1]`,\n value: value[1],\n valueSpec: functionValueSpec,\n style: options.style,\n styleSpec: options.styleSpec\n }));\n }\n\n function validateStopDomainValue(options, stop) {\n const type = getType(options.value);\n const value = unbundle(options.value);\n\n const reportValue = options.value !== null ? options.value : stop;\n\n if (!stopKeyType) {\n stopKeyType = type;\n } else if (type !== stopKeyType) {\n return [new ValidationError(options.key, reportValue, `${type} stop domain type must match previous stop domain type ${stopKeyType}`)];\n }\n\n if (type !== 'number' && type !== 'string' && type !== 'boolean') {\n return [new ValidationError(options.key, reportValue, 'stop domain value must be a number, string, or boolean')];\n }\n\n if (type !== 'number' && functionType !== 'categorical') {\n let message = `number expected, ${type} found`;\n if (supportsPropertyExpression(functionValueSpec) && functionType === undefined) {\n message += '\\nIf you intended to use a categorical function, specify `\"type\": \"categorical\"`.';\n }\n return [new ValidationError(options.key, reportValue, message)];\n }\n\n if (functionType === 'categorical' && type === 'number' && (!isFinite(value) || Math.floor(value) !== value)) {\n return [new ValidationError(options.key, reportValue, `integer expected, found ${value}`)];\n }\n\n if (functionType !== 'categorical' && type === 'number' && previousStopDomainValue !== undefined && value < previousStopDomainValue) {\n return [new ValidationError(options.key, reportValue, 'stop domain values must appear in ascending order')];\n } else {\n previousStopDomainValue = value;\n }\n\n if (functionType === 'categorical' && value in stopDomainValues) {\n return [new ValidationError(options.key, reportValue, 'stop domain values must be unique')];\n } else {\n stopDomainValues[value] = true;\n }\n\n return [];\n }\n\n function validateFunctionDefault(options) {\n return validate({\n key: options.key,\n value: options.value,\n valueSpec: functionValueSpec,\n style: options.style,\n styleSpec: options.styleSpec\n });\n }\n}\n", "// @flow\n\nimport ValidationError from '../error/validation_error';\n\nimport {createExpression, createPropertyExpression} from '../expression';\nimport {deepUnbundle} from '../util/unbundle_jsonlint';\nimport {isStateConstant, isGlobalPropertyConstant, isFeatureConstant} from '../expression/is_constant';\n\nexport default function validateExpression(options: any): Array {\n const expression = (options.expressionContext === 'property' ? createPropertyExpression : createExpression)(deepUnbundle(options.value), options.valueSpec);\n if (expression.result === 'error') {\n return expression.value.map((error) => {\n return new ValidationError(`${options.key}${error.key}`, options.value, error.message);\n });\n }\n\n const expressionObj = (expression.value: any).expression || (expression.value: any)._styleExpression.expression;\n\n if (options.expressionContext === 'property' && (options.propertyKey === 'text-font') &&\n !expressionObj.outputDefined()) {\n return [new ValidationError(options.key, options.value, `Invalid data expression for \"${options.propertyKey}\". Output values must be contained as literals within the expression.`)];\n }\n\n if (options.expressionContext === 'property' && options.propertyType === 'layout' &&\n (!isStateConstant(expressionObj))) {\n return [new ValidationError(options.key, options.value, '\"feature-state\" data expressions are not supported with layout properties.')];\n }\n\n if (options.expressionContext === 'filter' && !isStateConstant(expressionObj)) {\n return [new ValidationError(options.key, options.value, '\"feature-state\" data expressions are not supported with filters.')];\n }\n\n if (options.expressionContext && options.expressionContext.indexOf('cluster') === 0) {\n if (!isGlobalPropertyConstant(expressionObj, ['zoom', 'feature-state'])) {\n return [new ValidationError(options.key, options.value, '\"zoom\" and \"feature-state\" expressions are not supported with cluster properties.')];\n }\n if (options.expressionContext === 'cluster-initial' && !isFeatureConstant(expressionObj)) {\n return [new ValidationError(options.key, options.value, 'Feature data expressions are not supported with initial expression part of cluster properties.')];\n }\n }\n\n return [];\n}\n", "\nimport ValidationError from '../error/validation_error';\nimport {unbundle} from '../util/unbundle_jsonlint';\n\nexport default function validateEnum(options) {\n const key = options.key;\n const value = options.value;\n const valueSpec = options.valueSpec;\n const errors = [];\n\n if (Array.isArray(valueSpec.values)) { // <=v7\n if (valueSpec.values.indexOf(unbundle(value)) === -1) {\n errors.push(new ValidationError(key, value, `expected one of [${valueSpec.values.join(', ')}], ${JSON.stringify(value)} found`));\n }\n } else { // >=v8\n if (Object.keys(valueSpec.values).indexOf(unbundle(value)) === -1) {\n errors.push(new ValidationError(key, value, `expected one of [${Object.keys(valueSpec.values).join(', ')}], ${JSON.stringify(value)} found`));\n }\n }\n return errors;\n}\n", "// @flow\n\nimport {createExpression} from '../expression';\nimport type {GlobalProperties, Feature} from '../expression';\nimport type {CanonicalTileID} from '../../source/tile_id';\n\ntype FilterExpression = (globalProperties: GlobalProperties, feature: Feature, canonical?: CanonicalTileID) => boolean;\nexport type FeatureFilter ={filter: FilterExpression, needGeometry: boolean};\n\nexport default createFilter;\nexport {isExpressionFilter};\n\nfunction isExpressionFilter(filter: any) {\n if (filter === true || filter === false) {\n return true;\n }\n\n if (!Array.isArray(filter) || filter.length === 0) {\n return false;\n }\n switch (filter[0]) {\n case 'has':\n return filter.length >= 2 && filter[1] !== '$id' && filter[1] !== '$type';\n\n case 'in':\n return filter.length >= 3 && (typeof filter[1] !== 'string' || Array.isArray(filter[2]));\n\n case '!in':\n case '!has':\n case 'none':\n return false;\n\n case '==':\n case '!=':\n case '>':\n case '>=':\n case '<':\n case '<=':\n return filter.length !== 3 || (Array.isArray(filter[1]) || Array.isArray(filter[2]));\n\n case 'any':\n case 'all':\n for (const f of filter.slice(1)) {\n if (!isExpressionFilter(f) && typeof f !== 'boolean') {\n return false;\n }\n }\n return true;\n\n default:\n return true;\n }\n}\n\nconst filterSpec = {\n 'type': 'boolean',\n 'default': false,\n 'transition': false,\n 'property-type': 'data-driven',\n 'expression': {\n 'interpolated': false,\n 'parameters': ['zoom', 'feature']\n }\n};\n\n/**\n * Given a filter expressed as nested arrays, return a new function\n * that evaluates whether a given feature (with a .properties or .tags property)\n * passes its test.\n *\n * @private\n * @param {Array} filter mapbox gl filter\n * @returns {Function} filter-evaluating function\n */\nfunction createFilter(filter: any): FeatureFilter {\n if (filter === null || filter === undefined) {\n return {filter: () => true, needGeometry: false};\n }\n\n if (!isExpressionFilter(filter)) {\n filter = convertFilter(filter);\n }\n\n const compiled = createExpression(filter, filterSpec);\n if (compiled.result === 'error') {\n throw new Error(compiled.value.map(err => `${err.key}: ${err.message}`).join(', '));\n } else {\n const needGeometry = geometryNeeded(filter);\n return {filter: (globalProperties: GlobalProperties, feature: Feature, canonical?: CanonicalTileID) => compiled.value.evaluate(globalProperties, feature, {}, canonical),\n needGeometry};\n }\n}\n\n// Comparison function to sort numbers and strings\nfunction compare(a, b) {\n return a < b ? -1 : a > b ? 1 : 0;\n}\n\nfunction geometryNeeded(filter) {\n if (!Array.isArray(filter)) return false;\n if (filter[0] === 'within') return true;\n for (let index = 1; index < filter.length; index++) {\n if (geometryNeeded(filter[index])) return true;\n }\n return false;\n}\n\nfunction convertFilter(filter: ?Array): mixed {\n if (!filter) return true;\n const op = filter[0];\n if (filter.length <= 1) return (op !== 'any');\n const converted =\n op === '==' ? convertComparisonOp(filter[1], filter[2], '==') :\n op === '!=' ? convertNegation(convertComparisonOp(filter[1], filter[2], '==')) :\n op === '<' ||\n op === '>' ||\n op === '<=' ||\n op === '>=' ? convertComparisonOp(filter[1], filter[2], op) :\n op === 'any' ? convertDisjunctionOp(filter.slice(1)) :\n op === 'all' ? ['all'].concat(filter.slice(1).map(convertFilter)) :\n op === 'none' ? ['all'].concat(filter.slice(1).map(convertFilter).map(convertNegation)) :\n op === 'in' ? convertInOp(filter[1], filter.slice(2)) :\n op === '!in' ? convertNegation(convertInOp(filter[1], filter.slice(2))) :\n op === 'has' ? convertHasOp(filter[1]) :\n op === '!has' ? convertNegation(convertHasOp(filter[1])) :\n op === 'within' ? filter :\n true;\n return converted;\n}\n\nfunction convertComparisonOp(property: string, value: any, op: string) {\n switch (property) {\n case '$type':\n return [`filter-type-${op}`, value];\n case '$id':\n return [`filter-id-${op}`, value];\n default:\n return [`filter-${op}`, property, value];\n }\n}\n\nfunction convertDisjunctionOp(filters: Array>) {\n return ['any'].concat(filters.map(convertFilter));\n}\n\nfunction convertInOp(property: string, values: Array) {\n if (values.length === 0) { return false; }\n switch (property) {\n case '$type':\n return [`filter-type-in`, ['literal', values]];\n case '$id':\n return [`filter-id-in`, ['literal', values]];\n default:\n if (values.length > 200 && !values.some(v => typeof v !== typeof values[0])) {\n return ['filter-in-large', property, ['literal', values.sort(compare)]];\n } else {\n return ['filter-in-small', property, ['literal', values]];\n }\n }\n}\n\nfunction convertHasOp(property: string) {\n switch (property) {\n case '$type':\n return true;\n case '$id':\n return [`filter-has-id`];\n default:\n return [`filter-has`, property];\n }\n}\n\nfunction convertNegation(filter: mixed) {\n return ['!', filter];\n}\n", "\nimport ValidationError from '../error/validation_error';\nimport validateExpression from './validate_expression';\nimport validateEnum from './validate_enum';\nimport getType from '../util/get_type';\nimport {unbundle, deepUnbundle} from '../util/unbundle_jsonlint';\nimport extend from '../util/extend';\nimport {isExpressionFilter} from '../feature_filter';\n\nexport default function validateFilter(options) {\n if (isExpressionFilter(deepUnbundle(options.value))) {\n return validateExpression(extend({}, options, {\n expressionContext: 'filter',\n valueSpec: {value: 'boolean'}\n }));\n } else {\n return validateNonExpressionFilter(options);\n }\n}\n\nfunction validateNonExpressionFilter(options) {\n const value = options.value;\n const key = options.key;\n\n if (getType(value) !== 'array') {\n return [new ValidationError(key, value, `array expected, ${getType(value)} found`)];\n }\n\n const styleSpec = options.styleSpec;\n let type;\n\n let errors = [];\n\n if (value.length < 1) {\n return [new ValidationError(key, value, 'filter array must have at least 1 element')];\n }\n\n errors = errors.concat(validateEnum({\n key: `${key}[0]`,\n value: value[0],\n valueSpec: styleSpec.filter_operator,\n style: options.style,\n styleSpec: options.styleSpec\n }));\n\n switch (unbundle(value[0])) {\n case '<':\n case '<=':\n case '>':\n case '>=':\n if (value.length >= 2 && unbundle(value[1]) === '$type') {\n errors.push(new ValidationError(key, value, `\"$type\" cannot be use with operator \"${value[0]}\"`));\n }\n /* falls through */\n case '==':\n case '!=':\n if (value.length !== 3) {\n errors.push(new ValidationError(key, value, `filter array for operator \"${value[0]}\" must have 3 elements`));\n }\n /* falls through */\n case 'in':\n case '!in':\n if (value.length >= 2) {\n type = getType(value[1]);\n if (type !== 'string') {\n errors.push(new ValidationError(`${key}[1]`, value[1], `string expected, ${type} found`));\n }\n }\n for (let i = 2; i < value.length; i++) {\n type = getType(value[i]);\n if (unbundle(value[1]) === '$type') {\n errors = errors.concat(validateEnum({\n key: `${key}[${i}]`,\n value: value[i],\n valueSpec: styleSpec.geometry_type,\n style: options.style,\n styleSpec: options.styleSpec\n }));\n } else if (type !== 'string' && type !== 'number' && type !== 'boolean') {\n errors.push(new ValidationError(`${key}[${i}]`, value[i], `string, number, or boolean expected, ${type} found`));\n }\n }\n break;\n\n case 'any':\n case 'all':\n case 'none':\n for (let i = 1; i < value.length; i++) {\n errors = errors.concat(validateNonExpressionFilter({\n key: `${key}[${i}]`,\n value: value[i],\n style: options.style,\n styleSpec: options.styleSpec\n }));\n }\n break;\n\n case 'has':\n case '!has':\n type = getType(value[1]);\n if (value.length !== 2) {\n errors.push(new ValidationError(key, value, `filter array for \"${value[0]}\" operator must have 2 elements`));\n } else if (type !== 'string') {\n errors.push(new ValidationError(`${key}[1]`, value[1], `string expected, ${type} found`));\n }\n break;\n case 'within':\n type = getType(value[1]);\n if (value.length !== 2) {\n errors.push(new ValidationError(key, value, `filter array for \"${value[0]}\" operator must have 2 elements`));\n } else if (type !== 'object') {\n errors.push(new ValidationError(`${key}[1]`, value[1], `object expected, ${type} found`));\n }\n break;\n }\n return errors;\n}\n", "\nimport validate from './validate';\nimport ValidationError from '../error/validation_error';\nimport getType from '../util/get_type';\nimport {isFunction} from '../function';\nimport {unbundle, deepUnbundle} from '../util/unbundle_jsonlint';\nimport {supportsPropertyExpression} from '../util/properties';\n\nexport default function validateProperty(options, propertyType) {\n const key = options.key;\n const style = options.style;\n const styleSpec = options.styleSpec;\n const value = options.value;\n const propertyKey = options.objectKey;\n const layerSpec = styleSpec[`${propertyType}_${options.layerType}`];\n\n if (!layerSpec) return [];\n\n const transitionMatch = propertyKey.match(/^(.*)-transition$/);\n if (propertyType === 'paint' && transitionMatch && layerSpec[transitionMatch[1]] && layerSpec[transitionMatch[1]].transition) {\n return validate({\n key,\n value,\n valueSpec: styleSpec.transition,\n style,\n styleSpec\n });\n }\n\n const valueSpec = options.valueSpec || layerSpec[propertyKey];\n if (!valueSpec) {\n return [new ValidationError(key, value, `unknown property \"${propertyKey}\"`)];\n }\n\n let tokenMatch;\n if (getType(value) === 'string' && supportsPropertyExpression(valueSpec) && !valueSpec.tokens && (tokenMatch = /^{([^}]+)}$/.exec(value))) {\n return [new ValidationError(\n key, value,\n `\"${propertyKey}\" does not support interpolation syntax\\n` +\n `Use an identity property function instead: \\`{ \"type\": \"identity\", \"property\": ${JSON.stringify(tokenMatch[1])} }\\`.`)];\n }\n\n const errors = [];\n\n if (options.layerType === 'symbol') {\n if (propertyKey === 'text-field' && style && !style.glyphs) {\n errors.push(new ValidationError(key, value, 'use of \"text-field\" requires a style \"glyphs\" property'));\n }\n if (propertyKey === 'text-font' && isFunction(deepUnbundle(value)) && unbundle(value.type) === 'identity') {\n errors.push(new ValidationError(key, value, '\"text-font\" does not support identity functions'));\n }\n }\n\n return errors.concat(validate({\n key: options.key,\n value,\n valueSpec,\n style,\n styleSpec,\n expressionContext: 'property',\n propertyType,\n propertyKey\n }));\n}\n", "\nimport validateProperty from './validate_property';\n\nexport default function validatePaintProperty(options) {\n return validateProperty(options, 'paint');\n}\n", "\nimport validateProperty from './validate_property';\n\nexport default function validateLayoutProperty(options) {\n return validateProperty(options, 'layout');\n}\n", "\nimport ValidationError from '../error/validation_error';\nimport {unbundle} from '../util/unbundle_jsonlint';\nimport validateObject from './validate_object';\nimport validateFilter from './validate_filter';\nimport validatePaintProperty from './validate_paint_property';\nimport validateLayoutProperty from './validate_layout_property';\nimport validateSpec from './validate';\nimport extend from '../util/extend';\n\nexport default function validateLayer(options) {\n let errors = [];\n\n const layer = options.value;\n const key = options.key;\n const style = options.style;\n const styleSpec = options.styleSpec;\n\n if (!layer.type && !layer.ref) {\n errors.push(new ValidationError(key, layer, 'either \"type\" or \"ref\" is required'));\n }\n let type = unbundle(layer.type);\n const ref = unbundle(layer.ref);\n\n if (layer.id) {\n const layerId = unbundle(layer.id);\n for (let i = 0; i < options.arrayIndex; i++) {\n const otherLayer = style.layers[i];\n if (unbundle(otherLayer.id) === layerId) {\n errors.push(new ValidationError(key, layer.id, `duplicate layer id \"${layer.id}\", previously used at line ${otherLayer.id.__line__}`));\n }\n }\n }\n\n if ('ref' in layer) {\n ['type', 'source', 'source-layer', 'filter', 'layout'].forEach((p) => {\n if (p in layer) {\n errors.push(new ValidationError(key, layer[p], `\"${p}\" is prohibited for ref layers`));\n }\n });\n\n let parent;\n\n style.layers.forEach((layer) => {\n if (unbundle(layer.id) === ref) parent = layer;\n });\n\n if (!parent) {\n errors.push(new ValidationError(key, layer.ref, `ref layer \"${ref}\" not found`));\n } else if (parent.ref) {\n errors.push(new ValidationError(key, layer.ref, 'ref cannot reference another ref layer'));\n } else {\n type = unbundle(parent.type);\n }\n } else if (type !== 'background') {\n if (!layer.source) {\n errors.push(new ValidationError(key, layer, 'missing required property \"source\"'));\n } else {\n const source = style.sources && style.sources[layer.source];\n const sourceType = source && unbundle(source.type);\n if (!source) {\n errors.push(new ValidationError(key, layer.source, `source \"${layer.source}\" not found`));\n } else if (sourceType === 'vector' && type === 'raster') {\n errors.push(new ValidationError(key, layer.source, `layer \"${layer.id}\" requires a raster source`));\n } else if (sourceType === 'raster' && type !== 'raster') {\n errors.push(new ValidationError(key, layer.source, `layer \"${layer.id}\" requires a vector source`));\n } else if (sourceType === 'vector' && !layer['source-layer']) {\n errors.push(new ValidationError(key, layer, `layer \"${layer.id}\" must specify a \"source-layer\"`));\n } else if (sourceType === 'raster-dem' && type !== 'hillshade') {\n errors.push(new ValidationError(key, layer.source, 'raster-dem source can only be used with layer type \\'hillshade\\'.'));\n } else if (type === 'line' && layer.paint && layer.paint['line-gradient'] &&\n (sourceType !== 'geojson' || !source.lineMetrics)) {\n errors.push(new ValidationError(key, layer, `layer \"${layer.id}\" specifies a line-gradient, which requires a GeoJSON source with \\`lineMetrics\\` enabled.`));\n }\n }\n }\n\n errors = errors.concat(validateObject({\n key,\n value: layer,\n valueSpec: styleSpec.layer,\n style: options.style,\n styleSpec: options.styleSpec,\n objectElementValidators: {\n '*'() {\n return [];\n },\n // We don't want to enforce the spec's `\"requires\": true` for backward compatibility with refs;\n // the actual requirement is validated above. See https://github.com/mapbox/mapbox-gl-js/issues/5772.\n type() {\n return validateSpec({\n key: `${key}.type`,\n value: layer.type,\n valueSpec: styleSpec.layer.type,\n style: options.style,\n styleSpec: options.styleSpec,\n object: layer,\n objectKey: 'type'\n });\n },\n filter: validateFilter,\n layout(options) {\n return validateObject({\n layer,\n key: options.key,\n value: options.value,\n style: options.style,\n styleSpec: options.styleSpec,\n objectElementValidators: {\n '*'(options) {\n return validateLayoutProperty(extend({layerType: type}, options));\n }\n }\n });\n },\n paint(options) {\n return validateObject({\n layer,\n key: options.key,\n value: options.value,\n style: options.style,\n styleSpec: options.styleSpec,\n objectElementValidators: {\n '*'(options) {\n return validatePaintProperty(extend({layerType: type}, options));\n }\n }\n });\n }\n }\n }));\n\n return errors;\n}\n", "\nimport getType from '../util/get_type';\nimport ValidationError from '../error/validation_error';\n\nexport default function validateString(options) {\n const value = options.value;\n const key = options.key;\n const type = getType(value);\n\n if (type !== 'string') {\n return [new ValidationError(key, value, `string expected, ${type} found`)];\n }\n\n return [];\n}\n", "\nimport ValidationError from '../error/validation_error';\nimport {unbundle} from '../util/unbundle_jsonlint';\nimport validateObject from './validate_object';\nimport validateEnum from './validate_enum';\nimport validateExpression from './validate_expression';\nimport validateString from './validate_string';\nimport getType from '../util/get_type';\n\nconst objectElementValidators = {\n promoteId: validatePromoteId\n};\n\nexport default function validateSource(options) {\n const value = options.value;\n const key = options.key;\n const styleSpec = options.styleSpec;\n const style = options.style;\n\n if (!value.type) {\n return [new ValidationError(key, value, '\"type\" is required')];\n }\n\n const type = unbundle(value.type);\n let errors;\n\n switch (type) {\n case 'vector':\n case 'raster':\n case 'raster-dem':\n errors = validateObject({\n key,\n value,\n valueSpec: styleSpec[`source_${type.replace('-', '_')}`],\n style: options.style,\n styleSpec,\n objectElementValidators\n });\n return errors;\n\n case 'geojson':\n errors = validateObject({\n key,\n value,\n valueSpec: styleSpec.source_geojson,\n style,\n styleSpec,\n objectElementValidators\n });\n if (value.cluster) {\n for (const prop in value.clusterProperties) {\n const [operator, mapExpr] = value.clusterProperties[prop];\n const reduceExpr = typeof operator === 'string' ? [operator, ['accumulated'], ['get', prop]] : operator;\n\n errors.push(...validateExpression({\n key: `${key}.${prop}.map`,\n value: mapExpr,\n expressionContext: 'cluster-map'\n }));\n errors.push(...validateExpression({\n key: `${key}.${prop}.reduce`,\n value: reduceExpr,\n expressionContext: 'cluster-reduce'\n }));\n }\n }\n return errors;\n\n case 'video':\n return validateObject({\n key,\n value,\n valueSpec: styleSpec.source_video,\n style,\n styleSpec\n });\n\n case 'image':\n return validateObject({\n key,\n value,\n valueSpec: styleSpec.source_image,\n style,\n styleSpec\n });\n\n case 'canvas':\n return [new ValidationError(key, null, `Please use runtime APIs to add canvas sources, rather than including them in stylesheets.`, 'source.canvas')];\n\n default:\n return validateEnum({\n key: `${key}.type`,\n value: value.type,\n valueSpec: {values: ['vector', 'raster', 'raster-dem', 'geojson', 'video', 'image']},\n style,\n styleSpec\n });\n }\n}\n\nfunction validatePromoteId({key, value}) {\n if (getType(value) === 'string') {\n return validateString({key, value});\n } else {\n const errors = [];\n for (const prop in value) {\n errors.push(...validateString({key: `${key}.${prop}`, value: value[prop]}));\n }\n return errors;\n }\n}\n", "\nimport ValidationError from '../error/validation_error';\nimport getType from '../util/get_type';\nimport validate from './validate';\n\nexport default function validateLight(options) {\n const light = options.value;\n const styleSpec = options.styleSpec;\n const lightSpec = styleSpec.light;\n const style = options.style;\n\n let errors = [];\n\n const rootType = getType(light);\n if (light === undefined) {\n return errors;\n } else if (rootType !== 'object') {\n errors = errors.concat([new ValidationError('light', light, `object expected, ${rootType} found`)]);\n return errors;\n }\n\n for (const key in light) {\n const transitionMatch = key.match(/^(.*)-transition$/);\n\n if (transitionMatch && lightSpec[transitionMatch[1]] && lightSpec[transitionMatch[1]].transition) {\n errors = errors.concat(validate({\n key,\n value: light[key],\n valueSpec: styleSpec.transition,\n style,\n styleSpec\n }));\n } else if (lightSpec[key]) {\n errors = errors.concat(validate({\n key,\n value: light[key],\n valueSpec: lightSpec[key],\n style,\n styleSpec\n }));\n } else {\n errors = errors.concat([new ValidationError(key, light[key], `unknown property \"${key}\"`)]);\n }\n }\n\n return errors;\n}\n", "\nimport extend from '../util/extend';\nimport {unbundle, deepUnbundle} from '../util/unbundle_jsonlint';\nimport {isExpression} from '../expression';\nimport {isFunction} from '../function';\n\nimport validateFunction from './validate_function';\nimport validateExpression from './validate_expression';\nimport validateObject from './validate_object';\nimport validateArray from './validate_array';\nimport validateBoolean from './validate_boolean';\nimport validateNumber from './validate_number';\nimport validateColor from './validate_color';\nimport validateConstants from './validate_constants';\nimport validateEnum from './validate_enum';\nimport validateFilter from './validate_filter';\nimport validateLayer from './validate_layer';\nimport validateSource from './validate_source';\nimport validateLight from './validate_light';\nimport validateString from './validate_string';\nimport validateFormatted from './validate_formatted';\nimport validateImage from './validate_image';\n\nconst VALIDATORS = {\n '*'() {\n return [];\n },\n 'array': validateArray,\n 'boolean': validateBoolean,\n 'number': validateNumber,\n 'color': validateColor,\n 'constants': validateConstants,\n 'enum': validateEnum,\n 'filter': validateFilter,\n 'function': validateFunction,\n 'layer': validateLayer,\n 'object': validateObject,\n 'source': validateSource,\n 'light': validateLight,\n 'string': validateString,\n 'formatted': validateFormatted,\n 'resolvedImage': validateImage\n};\n\n// Main recursive validation function. Tracks:\n//\n// - key: string representing location of validation in style tree. Used only\n// for more informative error reporting.\n// - value: current value from style being evaluated. May be anything from a\n// high level object that needs to be descended into deeper or a simple\n// scalar value.\n// - valueSpec: current spec being evaluated. Tracks value.\n// - styleSpec: current full spec being evaluated.\n\nexport default function validate(options) {\n const value = options.value;\n const valueSpec = options.valueSpec;\n const styleSpec = options.styleSpec;\n\n if (valueSpec.expression && isFunction(unbundle(value))) {\n return validateFunction(options);\n\n } else if (valueSpec.expression && isExpression(deepUnbundle(value))) {\n return validateExpression(options);\n\n } else if (valueSpec.type && VALIDATORS[valueSpec.type]) {\n return VALIDATORS[valueSpec.type](options);\n\n } else {\n const valid = validateObject(extend({}, options, {\n valueSpec: valueSpec.type ? styleSpec[valueSpec.type] : valueSpec\n }));\n return valid;\n }\n}\n", "\nimport getType from '../util/get_type';\nimport ValidationError from '../error/validation_error';\n\nexport default function validateBoolean(options) {\n const value = options.value;\n const key = options.key;\n const type = getType(value);\n\n if (type !== 'boolean') {\n return [new ValidationError(key, value, `boolean expected, ${type} found`)];\n }\n\n return [];\n}\n", "\nimport ValidationError from '../error/validation_error';\nimport getType from '../util/get_type';\nimport {parseCSSColor} from 'csscolorparser';\n\nexport default function validateColor(options) {\n const key = options.key;\n const value = options.value;\n const type = getType(value);\n\n if (type !== 'string') {\n return [new ValidationError(key, value, `color expected, ${type} found`)];\n }\n\n if (parseCSSColor(value) === null) {\n return [new ValidationError(key, value, `color expected, \"${value}\" found`)];\n }\n\n return [];\n}\n", "// @flow\nimport validateExpression from './validate_expression';\nimport validateString from './validate_string';\n\nexport default function validateFormatted(options: any) {\n if (validateString(options).length === 0) {\n return [];\n }\n\n return validateExpression(options);\n}\n", "// @flow\nimport validateExpression from './validate_expression';\nimport validateString from './validate_string';\n\nexport default function validateImage(options: any) {\n if (validateString(options).length === 0) {\n return [];\n }\n\n return validateExpression(options);\n}\n", "\nimport ValidationError from '../error/validation_error';\nimport validateString from './validate_string';\n\nexport default function(options) {\n const value = options.value;\n const key = options.key;\n\n const errors = validateString(options);\n if (errors.length) return errors;\n\n if (value.indexOf('{fontstack}') === -1) {\n errors.push(new ValidationError(key, value, '\"glyphs\" url must include a \"{fontstack}\" token'));\n }\n\n if (value.indexOf('{range}') === -1) {\n errors.push(new ValidationError(key, value, '\"glyphs\" url must include a \"{range}\" token'));\n }\n\n return errors;\n}\n", "\nimport validateConstants from './validate/validate_constants';\nimport validate from './validate/validate';\nimport latestStyleSpec from './reference/latest';\nimport validateGlyphsURL from './validate/validate_glyphs_url';\n\nimport validateSource from './validate/validate_source';\nimport validateLight from './validate/validate_light';\nimport validateLayer from './validate/validate_layer';\nimport validateFilter from './validate/validate_filter';\nimport validatePaintProperty from './validate/validate_paint_property';\nimport validateLayoutProperty from './validate/validate_layout_property';\n\n/**\n * Validate a Mapbox GL style against the style specification. This entrypoint,\n * `mapbox-gl-style-spec/lib/validate_style.min`, is designed to produce as\n * small a browserify bundle as possible by omitting unnecessary functionality\n * and legacy style specifications.\n *\n * @private\n * @param {Object} style The style to be validated.\n * @param {Object} [styleSpec] The style specification to validate against.\n * If omitted, the latest style spec is used.\n * @returns {Array}\n * @example\n * var validate = require('mapbox-gl-style-spec/lib/validate_style.min');\n * var errors = validate(style);\n */\nfunction validateStyleMin(style, styleSpec = latestStyleSpec) {\n\n let errors = [];\n\n errors = errors.concat(validate({\n key: '',\n value: style,\n valueSpec: styleSpec.$root,\n styleSpec,\n style,\n objectElementValidators: {\n glyphs: validateGlyphsURL,\n '*'() {\n return [];\n }\n }\n }));\n\n if (style.constants) {\n errors = errors.concat(validateConstants({\n key: 'constants',\n value: style.constants,\n style,\n styleSpec\n }));\n }\n\n return sortErrors(errors);\n}\n\nvalidateStyleMin.source = wrapCleanErrors(validateSource);\nvalidateStyleMin.light = wrapCleanErrors(validateLight);\nvalidateStyleMin.layer = wrapCleanErrors(validateLayer);\nvalidateStyleMin.filter = wrapCleanErrors(validateFilter);\nvalidateStyleMin.paintProperty = wrapCleanErrors(validatePaintProperty);\nvalidateStyleMin.layoutProperty = wrapCleanErrors(validateLayoutProperty);\n\nfunction sortErrors(errors) {\n return [].concat(errors).sort((a, b) => {\n return a.line - b.line;\n });\n}\n\nfunction wrapCleanErrors(inner) {\n return function(...args) {\n return sortErrors(inner.apply(this, args));\n };\n}\n\nexport default validateStyleMin;\n", "// @flow\nimport validateStyleMin from '../style-spec/validate_style.min';\nimport {ErrorEvent} from '../util/evented';\n\nimport type {Evented} from '../util/evented';\n\ntype ValidationError = {\n message: string,\n line: number,\n identifier?: string\n};\n\nexport type Validator = (Object) => $ReadOnlyArray;\n\ntype ValidateStyle = {\n (Object, ?Object): $ReadOnlyArray,\n source: Validator,\n layer: Validator,\n light: Validator,\n filter: Validator,\n paintProperty: Validator,\n layoutProperty: Validator\n};\n\nexport const validateStyle = (validateStyleMin: ValidateStyle);\n\nexport const validateSource = validateStyle.source;\nexport const validateLight = validateStyle.light;\nexport const validateFilter = validateStyle.filter;\nexport const validatePaintProperty = validateStyle.paintProperty;\nexport const validateLayoutProperty = validateStyle.layoutProperty;\n\nexport function emitValidationErrors(emitter: Evented, errors: ?$ReadOnlyArray<{message: string, identifier?: string}>): boolean {\n let hasErrors = false;\n if (errors && errors.length) {\n for (const error of errors) {\n emitter.fire(new ErrorEvent(new Error(error.message)));\n hasErrors = true;\n }\n }\n return hasErrors;\n}\n", "'use strict';\n\nmodule.exports = GridIndex;\n\nvar NUM_PARAMS = 3;\n\nfunction GridIndex(extent, n, padding) {\n var cells = this.cells = [];\n\n if (extent instanceof ArrayBuffer) {\n this.arrayBuffer = extent;\n var array = new Int32Array(this.arrayBuffer);\n extent = array[0];\n n = array[1];\n padding = array[2];\n\n this.d = n + 2 * padding;\n for (var k = 0; k < this.d * this.d; k++) {\n var start = array[NUM_PARAMS + k];\n var end = array[NUM_PARAMS + k + 1];\n cells.push(start === end ?\n null :\n array.subarray(start, end));\n }\n var keysOffset = array[NUM_PARAMS + cells.length];\n var bboxesOffset = array[NUM_PARAMS + cells.length + 1];\n this.keys = array.subarray(keysOffset, bboxesOffset);\n this.bboxes = array.subarray(bboxesOffset);\n\n this.insert = this._insertReadonly;\n\n } else {\n this.d = n + 2 * padding;\n for (var i = 0; i < this.d * this.d; i++) {\n cells.push([]);\n }\n this.keys = [];\n this.bboxes = [];\n }\n\n this.n = n;\n this.extent = extent;\n this.padding = padding;\n this.scale = n / extent;\n this.uid = 0;\n\n var p = (padding / n) * extent;\n this.min = -p;\n this.max = extent + p;\n}\n\n\nGridIndex.prototype.insert = function(key, x1, y1, x2, y2) {\n this._forEachCell(x1, y1, x2, y2, this._insertCell, this.uid++);\n this.keys.push(key);\n this.bboxes.push(x1);\n this.bboxes.push(y1);\n this.bboxes.push(x2);\n this.bboxes.push(y2);\n};\n\nGridIndex.prototype._insertReadonly = function() {\n throw 'Cannot insert into a GridIndex created from an ArrayBuffer.';\n};\n\nGridIndex.prototype._insertCell = function(x1, y1, x2, y2, cellIndex, uid) {\n this.cells[cellIndex].push(uid);\n};\n\nGridIndex.prototype.query = function(x1, y1, x2, y2, intersectionTest) {\n var min = this.min;\n var max = this.max;\n if (x1 <= min && y1 <= min && max <= x2 && max <= y2 && !intersectionTest) {\n // We use `Array#slice` because `this.keys` may be a `Int32Array` and\n // some browsers (Safari and IE) do not support `TypedArray#slice`\n // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray/slice#Browser_compatibility\n return Array.prototype.slice.call(this.keys);\n\n } else {\n var result = [];\n var seenUids = {};\n this._forEachCell(x1, y1, x2, y2, this._queryCell, result, seenUids, intersectionTest);\n return result;\n }\n};\n\nGridIndex.prototype._queryCell = function(x1, y1, x2, y2, cellIndex, result, seenUids, intersectionTest) {\n var cell = this.cells[cellIndex];\n if (cell !== null) {\n var keys = this.keys;\n var bboxes = this.bboxes;\n for (var u = 0; u < cell.length; u++) {\n var uid = cell[u];\n if (seenUids[uid] === undefined) {\n var offset = uid * 4;\n if (intersectionTest ?\n intersectionTest(bboxes[offset + 0], bboxes[offset + 1], bboxes[offset + 2], bboxes[offset + 3]) :\n ((x1 <= bboxes[offset + 2]) &&\n (y1 <= bboxes[offset + 3]) &&\n (x2 >= bboxes[offset + 0]) &&\n (y2 >= bboxes[offset + 1]))) {\n seenUids[uid] = true;\n result.push(keys[uid]);\n } else {\n seenUids[uid] = false;\n }\n }\n }\n }\n};\n\nGridIndex.prototype._forEachCell = function(x1, y1, x2, y2, fn, arg1, arg2, intersectionTest) {\n var cx1 = this._convertToCellCoord(x1);\n var cy1 = this._convertToCellCoord(y1);\n var cx2 = this._convertToCellCoord(x2);\n var cy2 = this._convertToCellCoord(y2);\n for (var x = cx1; x <= cx2; x++) {\n for (var y = cy1; y <= cy2; y++) {\n var cellIndex = this.d * y + x;\n if (intersectionTest && !intersectionTest(\n this._convertFromCellCoord(x),\n this._convertFromCellCoord(y),\n this._convertFromCellCoord(x + 1),\n this._convertFromCellCoord(y + 1))) continue;\n if (fn.call(this, x1, y1, x2, y2, cellIndex, arg1, arg2, intersectionTest)) return;\n }\n }\n};\n\nGridIndex.prototype._convertFromCellCoord = function(x) {\n return (x - this.padding) / this.scale;\n};\n\nGridIndex.prototype._convertToCellCoord = function(x) {\n return Math.max(0, Math.min(this.d - 1, Math.floor(x * this.scale) + this.padding));\n};\n\nGridIndex.prototype.toArrayBuffer = function() {\n if (this.arrayBuffer) return this.arrayBuffer;\n\n var cells = this.cells;\n\n var metadataLength = NUM_PARAMS + this.cells.length + 1 + 1;\n var totalCellLength = 0;\n for (var i = 0; i < this.cells.length; i++) {\n totalCellLength += this.cells[i].length;\n }\n\n var array = new Int32Array(metadataLength + totalCellLength + this.keys.length + this.bboxes.length);\n array[0] = this.extent;\n array[1] = this.n;\n array[2] = this.padding;\n\n var offset = metadataLength;\n for (var k = 0; k < cells.length; k++) {\n var cell = cells[k];\n array[NUM_PARAMS + k] = offset;\n array.set(cell, offset);\n offset += cell.length;\n }\n\n array[NUM_PARAMS + cells.length] = offset;\n array.set(this.keys, offset);\n offset += this.keys.length;\n\n array[NUM_PARAMS + cells.length + 1] = offset;\n array.set(this.bboxes, offset);\n offset += this.bboxes.length;\n\n return array.buffer;\n};\n", "// @flow\n\nimport assert from 'assert';\n\nimport Grid from 'grid-index';\nimport Color from '../style-spec/util/color';\nimport {StylePropertyFunction, StyleExpression, ZoomDependentExpression, ZoomConstantExpression} from '../style-spec/expression';\nimport CompoundExpression from '../style-spec/expression/compound_expression';\nimport expressions from '../style-spec/expression/definitions';\nimport ResolvedImage from '../style-spec/expression/types/resolved_image';\nimport window from './window';\nconst {ImageData, ImageBitmap} = window;\n\nimport type {Transferable} from '../types/transferable';\n\ntype SerializedObject = {[_: string]: Serialized }; // eslint-disable-line\nexport type Serialized =\n | null\n | void\n | boolean\n | number\n | string\n | Boolean\n | Number\n | String\n | Date\n | RegExp\n | ArrayBuffer\n | $ArrayBufferView\n | ImageData\n | Array\n | SerializedObject;\n\ntype Registry = {\n [_: string]: {\n klass: Class,\n omit: $ReadOnlyArray,\n shallow: $ReadOnlyArray\n }\n};\n\ntype RegisterOptions = {\n omit?: $ReadOnlyArray<$Keys>,\n shallow?: $ReadOnlyArray<$Keys>\n}\n\nconst registry: Registry = {};\n\n/**\n * Register the given class as serializable.\n *\n * @param options\n * @param options.omit List of properties to omit from serialization (e.g., cached/computed properties)\n * @param options.shallow List of properties that should be serialized by a simple shallow copy, rather than by a recursive call to serialize().\n *\n * @private\n */\nexport function register(name: string, klass: Class, options: RegisterOptions = {}) {\n assert(!registry[name], `${name} is already registered.`);\n (Object.defineProperty: any)(klass, '_classRegistryKey', {\n value: name,\n writeable: false\n });\n registry[name] = {\n klass,\n omit: options.omit || [],\n shallow: options.shallow || []\n };\n}\n\nregister('Object', Object);\n\ntype SerializedGrid = { buffer: ArrayBuffer };\n\nGrid.serialize = function serialize(grid: Grid, transferables?: Array): SerializedGrid {\n const buffer = grid.toArrayBuffer();\n if (transferables) {\n transferables.push(buffer);\n }\n return {buffer};\n};\n\nGrid.deserialize = function deserialize(serialized: SerializedGrid): Grid {\n return new Grid(serialized.buffer);\n};\nregister('Grid', Grid);\n\nregister('Color', Color);\nregister('Error', Error);\nregister('ResolvedImage', ResolvedImage);\n\nregister('StylePropertyFunction', StylePropertyFunction);\nregister('StyleExpression', StyleExpression, {omit: ['_evaluator']});\n\nregister('ZoomDependentExpression', ZoomDependentExpression);\nregister('ZoomConstantExpression', ZoomConstantExpression);\nregister('CompoundExpression', CompoundExpression, {omit: ['_evaluate']});\nfor (const name in expressions) {\n if ((expressions[name]: any)._classRegistryKey) continue;\n register(`Expression_${name}`, expressions[name]);\n}\n\nfunction isArrayBuffer(val: any): boolean {\n return val && typeof ArrayBuffer !== 'undefined' &&\n (val instanceof ArrayBuffer || (val.constructor && val.constructor.name === 'ArrayBuffer'));\n}\n\nfunction isImageBitmap(val: any): boolean {\n return ImageBitmap &&\n val instanceof ImageBitmap;\n}\n\n/**\n * Serialize the given object for transfer to or from a web worker.\n *\n * For non-builtin types, recursively serialize each property (possibly\n * omitting certain properties - see register()), and package the result along\n * with the constructor's `name` so that the appropriate constructor can be\n * looked up in `deserialize()`.\n *\n * If a `transferables` array is provided, add any transferable objects (i.e.,\n * any ArrayBuffers or ArrayBuffer views) to the list. (If a copy is needed,\n * this should happen in the client code, before using serialize().)\n *\n * @private\n */\nexport function serialize(input: mixed, transferables: ?Array): Serialized {\n if (input === null ||\n input === undefined ||\n typeof input === 'boolean' ||\n typeof input === 'number' ||\n typeof input === 'string' ||\n input instanceof Boolean ||\n input instanceof Number ||\n input instanceof String ||\n input instanceof Date ||\n input instanceof RegExp) {\n return input;\n }\n\n if (isArrayBuffer(input) || isImageBitmap(input)) {\n if (transferables) {\n transferables.push(((input: any): ArrayBuffer));\n }\n return input;\n }\n\n if (ArrayBuffer.isView(input)) {\n const view: $ArrayBufferView = (input: any);\n if (transferables) {\n transferables.push(view.buffer);\n }\n return view;\n }\n\n if (input instanceof ImageData) {\n if (transferables) {\n transferables.push(input.data.buffer);\n }\n return input;\n }\n\n if (Array.isArray(input)) {\n const serialized: Array = [];\n for (const item of input) {\n serialized.push(serialize(item, transferables));\n }\n return serialized;\n }\n\n if (typeof input === 'object') {\n const klass = (input.constructor: any);\n const name = klass._classRegistryKey;\n if (!name) {\n throw new Error(`can't serialize object of unregistered class`);\n }\n assert(registry[name]);\n\n const properties: SerializedObject = klass.serialize ?\n // (Temporary workaround) allow a class to provide static\n // `serialize()` and `deserialize()` methods to bypass the generic\n // approach.\n // This temporary workaround lets us use the generic serialization\n // approach for objects whose members include instances of dynamic\n // StructArray types. Once we refactor StructArray to be static,\n // we can remove this complexity.\n (klass.serialize(input, transferables): SerializedObject) : {};\n\n if (!klass.serialize) {\n for (const key in input) {\n // any cast due to https://github.com/facebook/flow/issues/5393\n if (!(input: any).hasOwnProperty(key)) continue;\n if (registry[name].omit.indexOf(key) >= 0) continue;\n const property = (input: any)[key];\n properties[key] = registry[name].shallow.indexOf(key) >= 0 ?\n property :\n serialize(property, transferables);\n }\n if (input instanceof Error) {\n properties.message = input.message;\n }\n } else {\n // make sure statically serialized object survives transfer of $name property\n assert(!transferables || properties !== transferables[transferables.length - 1]);\n }\n\n if (properties.$name) {\n throw new Error('$name property is reserved for worker serialization logic.');\n }\n if (name !== 'Object') {\n properties.$name = name;\n }\n\n return properties;\n }\n\n throw new Error(`can't serialize object of type ${typeof input}`);\n}\n\nexport function deserialize(input: Serialized): mixed {\n if (input === null ||\n input === undefined ||\n typeof input === 'boolean' ||\n typeof input === 'number' ||\n typeof input === 'string' ||\n input instanceof Boolean ||\n input instanceof Number ||\n input instanceof String ||\n input instanceof Date ||\n input instanceof RegExp ||\n isArrayBuffer(input) ||\n isImageBitmap(input) ||\n ArrayBuffer.isView(input) ||\n input instanceof ImageData) {\n return input;\n }\n\n if (Array.isArray(input)) {\n return input.map(deserialize);\n }\n\n if (typeof input === 'object') {\n const name = (input: any).$name || 'Object';\n\n const {klass} = registry[name];\n if (!klass) {\n throw new Error(`can't deserialize unregistered class ${name}`);\n }\n\n if (klass.deserialize) {\n return (klass.deserialize: typeof deserialize)(input);\n }\n\n const result = Object.create(klass.prototype);\n\n for (const key of Object.keys(input)) {\n if (key === '$name') continue;\n const value = (input: SerializedObject)[key];\n result[key] = registry[name].shallow.indexOf(key) >= 0 ? value : deserialize(value);\n }\n\n return result;\n }\n\n throw new Error(`can't deserialize object of type ${typeof input}`);\n}\n", "// @flow\n\nclass ZoomHistory {\n lastZoom: number;\n lastFloorZoom: number;\n lastIntegerZoom: number;\n lastIntegerZoomTime: number;\n first: boolean;\n\n constructor() {\n this.first = true;\n }\n\n update(z: number, now: number) {\n const floorZ = Math.floor(z);\n\n if (this.first) {\n this.first = false;\n this.lastIntegerZoom = floorZ;\n this.lastIntegerZoomTime = 0;\n this.lastZoom = z;\n this.lastFloorZoom = floorZ;\n return true;\n }\n\n if (this.lastFloorZoom > floorZ) {\n this.lastIntegerZoom = floorZ + 1;\n this.lastIntegerZoomTime = now;\n } else if (this.lastFloorZoom < floorZ) {\n this.lastIntegerZoom = floorZ;\n this.lastIntegerZoomTime = now;\n }\n\n if (z !== this.lastZoom) {\n this.lastZoom = z;\n this.lastFloorZoom = floorZ;\n return true;\n }\n\n return false;\n }\n}\n\nexport default ZoomHistory;\n", "// @flow\n\n// The following table comes from .\n// Keep it synchronized with .\n\ntype UnicodeBlockLookup = {[key: string]: (char: number) => boolean};\n\nconst unicodeBlockLookup: UnicodeBlockLookup = {\n // 'Basic Latin': (char) => char >= 0x0000 && char <= 0x007F,\n 'Latin-1 Supplement': (char) => char >= 0x0080 && char <= 0x00FF,\n // 'Latin Extended-A': (char) => char >= 0x0100 && char <= 0x017F,\n // 'Latin Extended-B': (char) => char >= 0x0180 && char <= 0x024F,\n // 'IPA Extensions': (char) => char >= 0x0250 && char <= 0x02AF,\n // 'Spacing Modifier Letters': (char) => char >= 0x02B0 && char <= 0x02FF,\n // 'Combining Diacritical Marks': (char) => char >= 0x0300 && char <= 0x036F,\n // 'Greek and Coptic': (char) => char >= 0x0370 && char <= 0x03FF,\n // 'Cyrillic': (char) => char >= 0x0400 && char <= 0x04FF,\n // 'Cyrillic Supplement': (char) => char >= 0x0500 && char <= 0x052F,\n // 'Armenian': (char) => char >= 0x0530 && char <= 0x058F,\n //'Hebrew': (char) => char >= 0x0590 && char <= 0x05FF,\n 'Arabic': (char) => char >= 0x0600 && char <= 0x06FF,\n //'Syriac': (char) => char >= 0x0700 && char <= 0x074F,\n 'Arabic Supplement': (char) => char >= 0x0750 && char <= 0x077F,\n // 'Thaana': (char) => char >= 0x0780 && char <= 0x07BF,\n // 'NKo': (char) => char >= 0x07C0 && char <= 0x07FF,\n // 'Samaritan': (char) => char >= 0x0800 && char <= 0x083F,\n // 'Mandaic': (char) => char >= 0x0840 && char <= 0x085F,\n // 'Syriac Supplement': (char) => char >= 0x0860 && char <= 0x086F,\n 'Arabic Extended-A': (char) => char >= 0x08A0 && char <= 0x08FF,\n // 'Devanagari': (char) => char >= 0x0900 && char <= 0x097F,\n // 'Bengali': (char) => char >= 0x0980 && char <= 0x09FF,\n // 'Gurmukhi': (char) => char >= 0x0A00 && char <= 0x0A7F,\n // 'Gujarati': (char) => char >= 0x0A80 && char <= 0x0AFF,\n // 'Oriya': (char) => char >= 0x0B00 && char <= 0x0B7F,\n // 'Tamil': (char) => char >= 0x0B80 && char <= 0x0BFF,\n // 'Telugu': (char) => char >= 0x0C00 && char <= 0x0C7F,\n // 'Kannada': (char) => char >= 0x0C80 && char <= 0x0CFF,\n // 'Malayalam': (char) => char >= 0x0D00 && char <= 0x0D7F,\n // 'Sinhala': (char) => char >= 0x0D80 && char <= 0x0DFF,\n // 'Thai': (char) => char >= 0x0E00 && char <= 0x0E7F,\n // 'Lao': (char) => char >= 0x0E80 && char <= 0x0EFF,\n // 'Tibetan': (char) => char >= 0x0F00 && char <= 0x0FFF,\n // 'Myanmar': (char) => char >= 0x1000 && char <= 0x109F,\n // 'Georgian': (char) => char >= 0x10A0 && char <= 0x10FF,\n 'Hangul Jamo': (char) => char >= 0x1100 && char <= 0x11FF,\n // 'Ethiopic': (char) => char >= 0x1200 && char <= 0x137F,\n // 'Ethiopic Supplement': (char) => char >= 0x1380 && char <= 0x139F,\n // 'Cherokee': (char) => char >= 0x13A0 && char <= 0x13FF,\n 'Unified Canadian Aboriginal Syllabics': (char) => char >= 0x1400 && char <= 0x167F,\n // 'Ogham': (char) => char >= 0x1680 && char <= 0x169F,\n // 'Runic': (char) => char >= 0x16A0 && char <= 0x16FF,\n // 'Tagalog': (char) => char >= 0x1700 && char <= 0x171F,\n // 'Hanunoo': (char) => char >= 0x1720 && char <= 0x173F,\n // 'Buhid': (char) => char >= 0x1740 && char <= 0x175F,\n // 'Tagbanwa': (char) => char >= 0x1760 && char <= 0x177F,\n 'Khmer': (char) => char >= 0x1780 && char <= 0x17FF,\n // 'Mongolian': (char) => char >= 0x1800 && char <= 0x18AF,\n 'Unified Canadian Aboriginal Syllabics Extended': (char) => char >= 0x18B0 && char <= 0x18FF,\n // 'Limbu': (char) => char >= 0x1900 && char <= 0x194F,\n // 'Tai Le': (char) => char >= 0x1950 && char <= 0x197F,\n // 'New Tai Lue': (char) => char >= 0x1980 && char <= 0x19DF,\n // 'Khmer Symbols': (char) => char >= 0x19E0 && char <= 0x19FF,\n // 'Buginese': (char) => char >= 0x1A00 && char <= 0x1A1F,\n // 'Tai Tham': (char) => char >= 0x1A20 && char <= 0x1AAF,\n // 'Combining Diacritical Marks Extended': (char) => char >= 0x1AB0 && char <= 0x1AFF,\n // 'Balinese': (char) => char >= 0x1B00 && char <= 0x1B7F,\n // 'Sundanese': (char) => char >= 0x1B80 && char <= 0x1BBF,\n // 'Batak': (char) => char >= 0x1BC0 && char <= 0x1BFF,\n // 'Lepcha': (char) => char >= 0x1C00 && char <= 0x1C4F,\n // 'Ol Chiki': (char) => char >= 0x1C50 && char <= 0x1C7F,\n // 'Cyrillic Extended-C': (char) => char >= 0x1C80 && char <= 0x1C8F,\n // 'Georgian Extended': (char) => char >= 0x1C90 && char <= 0x1CBF,\n // 'Sundanese Supplement': (char) => char >= 0x1CC0 && char <= 0x1CCF,\n // 'Vedic Extensions': (char) => char >= 0x1CD0 && char <= 0x1CFF,\n // 'Phonetic Extensions': (char) => char >= 0x1D00 && char <= 0x1D7F,\n // 'Phonetic Extensions Supplement': (char) => char >= 0x1D80 && char <= 0x1DBF,\n // 'Combining Diacritical Marks Supplement': (char) => char >= 0x1DC0 && char <= 0x1DFF,\n // 'Latin Extended Additional': (char) => char >= 0x1E00 && char <= 0x1EFF,\n // 'Greek Extended': (char) => char >= 0x1F00 && char <= 0x1FFF,\n 'General Punctuation': (char) => char >= 0x2000 && char <= 0x206F,\n // 'Superscripts and Subscripts': (char) => char >= 0x2070 && char <= 0x209F,\n // 'Currency Symbols': (char) => char >= 0x20A0 && char <= 0x20CF,\n // 'Combining Diacritical Marks for Symbols': (char) => char >= 0x20D0 && char <= 0x20FF,\n 'Letterlike Symbols': (char) => char >= 0x2100 && char <= 0x214F,\n 'Number Forms': (char) => char >= 0x2150 && char <= 0x218F,\n // 'Arrows': (char) => char >= 0x2190 && char <= 0x21FF,\n // 'Mathematical Operators': (char) => char >= 0x2200 && char <= 0x22FF,\n 'Miscellaneous Technical': (char) => char >= 0x2300 && char <= 0x23FF,\n 'Control Pictures': (char) => char >= 0x2400 && char <= 0x243F,\n 'Optical Character Recognition': (char) => char >= 0x2440 && char <= 0x245F,\n 'Enclosed Alphanumerics': (char) => char >= 0x2460 && char <= 0x24FF,\n // 'Box Drawing': (char) => char >= 0x2500 && char <= 0x257F,\n // 'Block Elements': (char) => char >= 0x2580 && char <= 0x259F,\n 'Geometric Shapes': (char) => char >= 0x25A0 && char <= 0x25FF,\n 'Miscellaneous Symbols': (char) => char >= 0x2600 && char <= 0x26FF,\n // 'Dingbats': (char) => char >= 0x2700 && char <= 0x27BF,\n // 'Miscellaneous Mathematical Symbols-A': (char) => char >= 0x27C0 && char <= 0x27EF,\n // 'Supplemental Arrows-A': (char) => char >= 0x27F0 && char <= 0x27FF,\n // 'Braille Patterns': (char) => char >= 0x2800 && char <= 0x28FF,\n // 'Supplemental Arrows-B': (char) => char >= 0x2900 && char <= 0x297F,\n // 'Miscellaneous Mathematical Symbols-B': (char) => char >= 0x2980 && char <= 0x29FF,\n // 'Supplemental Mathematical Operators': (char) => char >= 0x2A00 && char <= 0x2AFF,\n 'Miscellaneous Symbols and Arrows': (char) => char >= 0x2B00 && char <= 0x2BFF,\n // 'Glagolitic': (char) => char >= 0x2C00 && char <= 0x2C5F,\n // 'Latin Extended-C': (char) => char >= 0x2C60 && char <= 0x2C7F,\n // 'Coptic': (char) => char >= 0x2C80 && char <= 0x2CFF,\n // 'Georgian Supplement': (char) => char >= 0x2D00 && char <= 0x2D2F,\n // 'Tifinagh': (char) => char >= 0x2D30 && char <= 0x2D7F,\n // 'Ethiopic Extended': (char) => char >= 0x2D80 && char <= 0x2DDF,\n // 'Cyrillic Extended-A': (char) => char >= 0x2DE0 && char <= 0x2DFF,\n // 'Supplemental Punctuation': (char) => char >= 0x2E00 && char <= 0x2E7F,\n 'CJK Radicals Supplement': (char) => char >= 0x2E80 && char <= 0x2EFF,\n 'Kangxi Radicals': (char) => char >= 0x2F00 && char <= 0x2FDF,\n 'Ideographic Description Characters': (char) => char >= 0x2FF0 && char <= 0x2FFF,\n 'CJK Symbols and Punctuation': (char) => char >= 0x3000 && char <= 0x303F,\n 'Hiragana': (char) => char >= 0x3040 && char <= 0x309F,\n 'Katakana': (char) => char >= 0x30A0 && char <= 0x30FF,\n 'Bopomofo': (char) => char >= 0x3100 && char <= 0x312F,\n 'Hangul Compatibility Jamo': (char) => char >= 0x3130 && char <= 0x318F,\n 'Kanbun': (char) => char >= 0x3190 && char <= 0x319F,\n 'Bopomofo Extended': (char) => char >= 0x31A0 && char <= 0x31BF,\n 'CJK Strokes': (char) => char >= 0x31C0 && char <= 0x31EF,\n 'Katakana Phonetic Extensions': (char) => char >= 0x31F0 && char <= 0x31FF,\n 'Enclosed CJK Letters and Months': (char) => char >= 0x3200 && char <= 0x32FF,\n 'CJK Compatibility': (char) => char >= 0x3300 && char <= 0x33FF,\n 'CJK Unified Ideographs Extension A': (char) => char >= 0x3400 && char <= 0x4DBF,\n 'Yijing Hexagram Symbols': (char) => char >= 0x4DC0 && char <= 0x4DFF,\n 'CJK Unified Ideographs': (char) => char >= 0x4E00 && char <= 0x9FFF,\n 'Yi Syllables': (char) => char >= 0xA000 && char <= 0xA48F,\n 'Yi Radicals': (char) => char >= 0xA490 && char <= 0xA4CF,\n // 'Lisu': (char) => char >= 0xA4D0 && char <= 0xA4FF,\n // 'Vai': (char) => char >= 0xA500 && char <= 0xA63F,\n // 'Cyrillic Extended-B': (char) => char >= 0xA640 && char <= 0xA69F,\n // 'Bamum': (char) => char >= 0xA6A0 && char <= 0xA6FF,\n // 'Modifier Tone Letters': (char) => char >= 0xA700 && char <= 0xA71F,\n // 'Latin Extended-D': (char) => char >= 0xA720 && char <= 0xA7FF,\n // 'Syloti Nagri': (char) => char >= 0xA800 && char <= 0xA82F,\n // 'Common Indic Number Forms': (char) => char >= 0xA830 && char <= 0xA83F,\n // 'Phags-pa': (char) => char >= 0xA840 && char <= 0xA87F,\n // 'Saurashtra': (char) => char >= 0xA880 && char <= 0xA8DF,\n // 'Devanagari Extended': (char) => char >= 0xA8E0 && char <= 0xA8FF,\n // 'Kayah Li': (char) => char >= 0xA900 && char <= 0xA92F,\n // 'Rejang': (char) => char >= 0xA930 && char <= 0xA95F,\n 'Hangul Jamo Extended-A': (char) => char >= 0xA960 && char <= 0xA97F,\n // 'Javanese': (char) => char >= 0xA980 && char <= 0xA9DF,\n // 'Myanmar Extended-B': (char) => char >= 0xA9E0 && char <= 0xA9FF,\n // 'Cham': (char) => char >= 0xAA00 && char <= 0xAA5F,\n // 'Myanmar Extended-A': (char) => char >= 0xAA60 && char <= 0xAA7F,\n // 'Tai Viet': (char) => char >= 0xAA80 && char <= 0xAADF,\n // 'Meetei Mayek Extensions': (char) => char >= 0xAAE0 && char <= 0xAAFF,\n // 'Ethiopic Extended-A': (char) => char >= 0xAB00 && char <= 0xAB2F,\n // 'Latin Extended-E': (char) => char >= 0xAB30 && char <= 0xAB6F,\n // 'Cherokee Supplement': (char) => char >= 0xAB70 && char <= 0xABBF,\n // 'Meetei Mayek': (char) => char >= 0xABC0 && char <= 0xABFF,\n 'Hangul Syllables': (char) => char >= 0xAC00 && char <= 0xD7AF,\n 'Hangul Jamo Extended-B': (char) => char >= 0xD7B0 && char <= 0xD7FF,\n // 'High Surrogates': (char) => char >= 0xD800 && char <= 0xDB7F,\n // 'High Private Use Surrogates': (char) => char >= 0xDB80 && char <= 0xDBFF,\n // 'Low Surrogates': (char) => char >= 0xDC00 && char <= 0xDFFF,\n 'Private Use Area': (char) => char >= 0xE000 && char <= 0xF8FF,\n 'CJK Compatibility Ideographs': (char) => char >= 0xF900 && char <= 0xFAFF,\n // 'Alphabetic Presentation Forms': (char) => char >= 0xFB00 && char <= 0xFB4F,\n 'Arabic Presentation Forms-A': (char) => char >= 0xFB50 && char <= 0xFDFF,\n // 'Variation Selectors': (char) => char >= 0xFE00 && char <= 0xFE0F,\n 'Vertical Forms': (char) => char >= 0xFE10 && char <= 0xFE1F,\n // 'Combining Half Marks': (char) => char >= 0xFE20 && char <= 0xFE2F,\n 'CJK Compatibility Forms': (char) => char >= 0xFE30 && char <= 0xFE4F,\n 'Small Form Variants': (char) => char >= 0xFE50 && char <= 0xFE6F,\n 'Arabic Presentation Forms-B': (char) => char >= 0xFE70 && char <= 0xFEFF,\n 'Halfwidth and Fullwidth Forms': (char) => char >= 0xFF00 && char <= 0xFFEF\n // 'Specials': (char) => char >= 0xFFF0 && char <= 0xFFFF,\n // 'Linear B Syllabary': (char) => char >= 0x10000 && char <= 0x1007F,\n // 'Linear B Ideograms': (char) => char >= 0x10080 && char <= 0x100FF,\n // 'Aegean Numbers': (char) => char >= 0x10100 && char <= 0x1013F,\n // 'Ancient Greek Numbers': (char) => char >= 0x10140 && char <= 0x1018F,\n // 'Ancient Symbols': (char) => char >= 0x10190 && char <= 0x101CF,\n // 'Phaistos Disc': (char) => char >= 0x101D0 && char <= 0x101FF,\n // 'Lycian': (char) => char >= 0x10280 && char <= 0x1029F,\n // 'Carian': (char) => char >= 0x102A0 && char <= 0x102DF,\n // 'Coptic Epact Numbers': (char) => char >= 0x102E0 && char <= 0x102FF,\n // 'Old Italic': (char) => char >= 0x10300 && char <= 0x1032F,\n // 'Gothic': (char) => char >= 0x10330 && char <= 0x1034F,\n // 'Old Permic': (char) => char >= 0x10350 && char <= 0x1037F,\n // 'Ugaritic': (char) => char >= 0x10380 && char <= 0x1039F,\n // 'Old Persian': (char) => char >= 0x103A0 && char <= 0x103DF,\n // 'Deseret': (char) => char >= 0x10400 && char <= 0x1044F,\n // 'Shavian': (char) => char >= 0x10450 && char <= 0x1047F,\n // 'Osmanya': (char) => char >= 0x10480 && char <= 0x104AF,\n // 'Osage': (char) => char >= 0x104B0 && char <= 0x104FF,\n // 'Elbasan': (char) => char >= 0x10500 && char <= 0x1052F,\n // 'Caucasian Albanian': (char) => char >= 0x10530 && char <= 0x1056F,\n // 'Linear A': (char) => char >= 0x10600 && char <= 0x1077F,\n // 'Cypriot Syllabary': (char) => char >= 0x10800 && char <= 0x1083F,\n // 'Imperial Aramaic': (char) => char >= 0x10840 && char <= 0x1085F,\n // 'Palmyrene': (char) => char >= 0x10860 && char <= 0x1087F,\n // 'Nabataean': (char) => char >= 0x10880 && char <= 0x108AF,\n // 'Hatran': (char) => char >= 0x108E0 && char <= 0x108FF,\n // 'Phoenician': (char) => char >= 0x10900 && char <= 0x1091F,\n // 'Lydian': (char) => char >= 0x10920 && char <= 0x1093F,\n // 'Meroitic Hieroglyphs': (char) => char >= 0x10980 && char <= 0x1099F,\n // 'Meroitic Cursive': (char) => char >= 0x109A0 && char <= 0x109FF,\n // 'Kharoshthi': (char) => char >= 0x10A00 && char <= 0x10A5F,\n // 'Old South Arabian': (char) => char >= 0x10A60 && char <= 0x10A7F,\n // 'Old North Arabian': (char) => char >= 0x10A80 && char <= 0x10A9F,\n // 'Manichaean': (char) => char >= 0x10AC0 && char <= 0x10AFF,\n // 'Avestan': (char) => char >= 0x10B00 && char <= 0x10B3F,\n // 'Inscriptional Parthian': (char) => char >= 0x10B40 && char <= 0x10B5F,\n // 'Inscriptional Pahlavi': (char) => char >= 0x10B60 && char <= 0x10B7F,\n // 'Psalter Pahlavi': (char) => char >= 0x10B80 && char <= 0x10BAF,\n // 'Old Turkic': (char) => char >= 0x10C00 && char <= 0x10C4F,\n // 'Old Hungarian': (char) => char >= 0x10C80 && char <= 0x10CFF,\n // 'Hanifi Rohingya': (char) => char >= 0x10D00 && char <= 0x10D3F,\n // 'Rumi Numeral Symbols': (char) => char >= 0x10E60 && char <= 0x10E7F,\n // 'Old Sogdian': (char) => char >= 0x10F00 && char <= 0x10F2F,\n // 'Sogdian': (char) => char >= 0x10F30 && char <= 0x10F6F,\n // 'Elymaic': (char) => char >= 0x10FE0 && char <= 0x10FFF,\n // 'Brahmi': (char) => char >= 0x11000 && char <= 0x1107F,\n // 'Kaithi': (char) => char >= 0x11080 && char <= 0x110CF,\n // 'Sora Sompeng': (char) => char >= 0x110D0 && char <= 0x110FF,\n // 'Chakma': (char) => char >= 0x11100 && char <= 0x1114F,\n // 'Mahajani': (char) => char >= 0x11150 && char <= 0x1117F,\n // 'Sharada': (char) => char >= 0x11180 && char <= 0x111DF,\n // 'Sinhala Archaic Numbers': (char) => char >= 0x111E0 && char <= 0x111FF,\n // 'Khojki': (char) => char >= 0x11200 && char <= 0x1124F,\n // 'Multani': (char) => char >= 0x11280 && char <= 0x112AF,\n // 'Khudawadi': (char) => char >= 0x112B0 && char <= 0x112FF,\n // 'Grantha': (char) => char >= 0x11300 && char <= 0x1137F,\n // 'Newa': (char) => char >= 0x11400 && char <= 0x1147F,\n // 'Tirhuta': (char) => char >= 0x11480 && char <= 0x114DF,\n // 'Siddham': (char) => char >= 0x11580 && char <= 0x115FF,\n // 'Modi': (char) => char >= 0x11600 && char <= 0x1165F,\n // 'Mongolian Supplement': (char) => char >= 0x11660 && char <= 0x1167F,\n // 'Takri': (char) => char >= 0x11680 && char <= 0x116CF,\n // 'Ahom': (char) => char >= 0x11700 && char <= 0x1173F,\n // 'Dogra': (char) => char >= 0x11800 && char <= 0x1184F,\n // 'Warang Citi': (char) => char >= 0x118A0 && char <= 0x118FF,\n // 'Nandinagari': (char) => char >= 0x119A0 && char <= 0x119FF,\n // 'Zanabazar Square': (char) => char >= 0x11A00 && char <= 0x11A4F,\n // 'Soyombo': (char) => char >= 0x11A50 && char <= 0x11AAF,\n // 'Pau Cin Hau': (char) => char >= 0x11AC0 && char <= 0x11AFF,\n // 'Bhaiksuki': (char) => char >= 0x11C00 && char <= 0x11C6F,\n // 'Marchen': (char) => char >= 0x11C70 && char <= 0x11CBF,\n // 'Masaram Gondi': (char) => char >= 0x11D00 && char <= 0x11D5F,\n // 'Gunjala Gondi': (char) => char >= 0x11D60 && char <= 0x11DAF,\n // 'Makasar': (char) => char >= 0x11EE0 && char <= 0x11EFF,\n // 'Tamil Supplement': (char) => char >= 0x11FC0 && char <= 0x11FFF,\n // 'Cuneiform': (char) => char >= 0x12000 && char <= 0x123FF,\n // 'Cuneiform Numbers and Punctuation': (char) => char >= 0x12400 && char <= 0x1247F,\n // 'Early Dynastic Cuneiform': (char) => char >= 0x12480 && char <= 0x1254F,\n // 'Egyptian Hieroglyphs': (char) => char >= 0x13000 && char <= 0x1342F,\n // 'Egyptian Hieroglyph Format Controls': (char) => char >= 0x13430 && char <= 0x1343F,\n // 'Anatolian Hieroglyphs': (char) => char >= 0x14400 && char <= 0x1467F,\n // 'Bamum Supplement': (char) => char >= 0x16800 && char <= 0x16A3F,\n // 'Mro': (char) => char >= 0x16A40 && char <= 0x16A6F,\n // 'Bassa Vah': (char) => char >= 0x16AD0 && char <= 0x16AFF,\n // 'Pahawh Hmong': (char) => char >= 0x16B00 && char <= 0x16B8F,\n // 'Medefaidrin': (char) => char >= 0x16E40 && char <= 0x16E9F,\n // 'Miao': (char) => char >= 0x16F00 && char <= 0x16F9F,\n // 'Ideographic Symbols and Punctuation': (char) => char >= 0x16FE0 && char <= 0x16FFF,\n // 'Tangut': (char) => char >= 0x17000 && char <= 0x187FF,\n // 'Tangut Components': (char) => char >= 0x18800 && char <= 0x18AFF,\n // 'Kana Supplement': (char) => char >= 0x1B000 && char <= 0x1B0FF,\n // 'Kana Extended-A': (char) => char >= 0x1B100 && char <= 0x1B12F,\n // 'Small Kana Extension': (char) => char >= 0x1B130 && char <= 0x1B16F,\n // 'Nushu': (char) => char >= 0x1B170 && char <= 0x1B2FF,\n // 'Duployan': (char) => char >= 0x1BC00 && char <= 0x1BC9F,\n // 'Shorthand Format Controls': (char) => char >= 0x1BCA0 && char <= 0x1BCAF,\n // 'Byzantine Musical Symbols': (char) => char >= 0x1D000 && char <= 0x1D0FF,\n // 'Musical Symbols': (char) => char >= 0x1D100 && char <= 0x1D1FF,\n // 'Ancient Greek Musical Notation': (char) => char >= 0x1D200 && char <= 0x1D24F,\n // 'Mayan Numerals': (char) => char >= 0x1D2E0 && char <= 0x1D2FF,\n // 'Tai Xuan Jing Symbols': (char) => char >= 0x1D300 && char <= 0x1D35F,\n // 'Counting Rod Numerals': (char) => char >= 0x1D360 && char <= 0x1D37F,\n // 'Mathematical Alphanumeric Symbols': (char) => char >= 0x1D400 && char <= 0x1D7FF,\n // 'Sutton SignWriting': (char) => char >= 0x1D800 && char <= 0x1DAAF,\n // 'Glagolitic Supplement': (char) => char >= 0x1E000 && char <= 0x1E02F,\n // 'Nyiakeng Puachue Hmong': (char) => char >= 0x1E100 && char <= 0x1E14F,\n // 'Wancho': (char) => char >= 0x1E2C0 && char <= 0x1E2FF,\n // 'Mende Kikakui': (char) => char >= 0x1E800 && char <= 0x1E8DF,\n // 'Adlam': (char) => char >= 0x1E900 && char <= 0x1E95F,\n // 'Indic Siyaq Numbers': (char) => char >= 0x1EC70 && char <= 0x1ECBF,\n // 'Ottoman Siyaq Numbers': (char) => char >= 0x1ED00 && char <= 0x1ED4F,\n // 'Arabic Mathematical Alphabetic Symbols': (char) => char >= 0x1EE00 && char <= 0x1EEFF,\n // 'Mahjong Tiles': (char) => char >= 0x1F000 && char <= 0x1F02F,\n // 'Domino Tiles': (char) => char >= 0x1F030 && char <= 0x1F09F,\n // 'Playing Cards': (char) => char >= 0x1F0A0 && char <= 0x1F0FF,\n // 'Enclosed Alphanumeric Supplement': (char) => char >= 0x1F100 && char <= 0x1F1FF,\n // 'Enclosed Ideographic Supplement': (char) => char >= 0x1F200 && char <= 0x1F2FF,\n // 'Miscellaneous Symbols and Pictographs': (char) => char >= 0x1F300 && char <= 0x1F5FF,\n // 'Emoticons': (char) => char >= 0x1F600 && char <= 0x1F64F,\n // 'Ornamental Dingbats': (char) => char >= 0x1F650 && char <= 0x1F67F,\n // 'Transport and Map Symbols': (char) => char >= 0x1F680 && char <= 0x1F6FF,\n // 'Alchemical Symbols': (char) => char >= 0x1F700 && char <= 0x1F77F,\n // 'Geometric Shapes Extended': (char) => char >= 0x1F780 && char <= 0x1F7FF,\n // 'Supplemental Arrows-C': (char) => char >= 0x1F800 && char <= 0x1F8FF,\n // 'Supplemental Symbols and Pictographs': (char) => char >= 0x1F900 && char <= 0x1F9FF,\n // 'Chess Symbols': (char) => char >= 0x1FA00 && char <= 0x1FA6F,\n // 'Symbols and Pictographs Extended-A': (char) => char >= 0x1FA70 && char <= 0x1FAFF,\n // 'CJK Unified Ideographs Extension B': (char) => char >= 0x20000 && char <= 0x2A6DF,\n // 'CJK Unified Ideographs Extension C': (char) => char >= 0x2A700 && char <= 0x2B73F,\n // 'CJK Unified Ideographs Extension D': (char) => char >= 0x2B740 && char <= 0x2B81F,\n // 'CJK Unified Ideographs Extension E': (char) => char >= 0x2B820 && char <= 0x2CEAF,\n // 'CJK Unified Ideographs Extension F': (char) => char >= 0x2CEB0 && char <= 0x2EBEF,\n // 'CJK Compatibility Ideographs Supplement': (char) => char >= 0x2F800 && char <= 0x2FA1F,\n // 'Tags': (char) => char >= 0xE0000 && char <= 0xE007F,\n // 'Variation Selectors Supplement': (char) => char >= 0xE0100 && char <= 0xE01EF,\n // 'Supplementary Private Use Area-A': (char) => char >= 0xF0000 && char <= 0xFFFFF,\n // 'Supplementary Private Use Area-B': (char) => char >= 0x100000 && char <= 0x10FFFF,\n};\n\nexport default unicodeBlockLookup;\n", "// @flow\n\n/* eslint-disable new-cap */\n\nimport isChar from './is_char_in_unicode_block';\n\nexport function allowsIdeographicBreaking(chars: string) {\n for (const char of chars) {\n if (!charAllowsIdeographicBreaking(char.charCodeAt(0))) return false;\n }\n return true;\n}\n\nexport function allowsVerticalWritingMode(chars: string) {\n for (const char of chars) {\n if (charHasUprightVerticalOrientation(char.charCodeAt(0))) return true;\n }\n return false;\n}\n\nexport function allowsLetterSpacing(chars: string) {\n for (const char of chars) {\n if (!charAllowsLetterSpacing(char.charCodeAt(0))) return false;\n }\n return true;\n}\n\nexport function charAllowsLetterSpacing(char: number) {\n if (isChar['Arabic'](char)) return false;\n if (isChar['Arabic Supplement'](char)) return false;\n if (isChar['Arabic Extended-A'](char)) return false;\n if (isChar['Arabic Presentation Forms-A'](char)) return false;\n if (isChar['Arabic Presentation Forms-B'](char)) return false;\n\n return true;\n}\n\nexport function charAllowsIdeographicBreaking(char: number) {\n // Return early for characters outside all ideographic ranges.\n if (char < 0x2E80) return false;\n\n if (isChar['Bopomofo Extended'](char)) return true;\n if (isChar['Bopomofo'](char)) return true;\n if (isChar['CJK Compatibility Forms'](char)) return true;\n if (isChar['CJK Compatibility Ideographs'](char)) return true;\n if (isChar['CJK Compatibility'](char)) return true;\n if (isChar['CJK Radicals Supplement'](char)) return true;\n if (isChar['CJK Strokes'](char)) return true;\n if (isChar['CJK Symbols and Punctuation'](char)) return true;\n if (isChar['CJK Unified Ideographs Extension A'](char)) return true;\n if (isChar['CJK Unified Ideographs'](char)) return true;\n if (isChar['Enclosed CJK Letters and Months'](char)) return true;\n if (isChar['Halfwidth and Fullwidth Forms'](char)) return true;\n if (isChar['Hiragana'](char)) return true;\n if (isChar['Ideographic Description Characters'](char)) return true;\n if (isChar['Kangxi Radicals'](char)) return true;\n if (isChar['Katakana Phonetic Extensions'](char)) return true;\n if (isChar['Katakana'](char)) return true;\n if (isChar['Vertical Forms'](char)) return true;\n if (isChar['Yi Radicals'](char)) return true;\n if (isChar['Yi Syllables'](char)) return true;\n\n return false;\n}\n\n// The following logic comes from\n// .\n// Keep it synchronized with\n// .\n// The data file denotes with “U” or “Tu” any codepoint that may be drawn\n// upright in vertical text but does not distinguish between upright and\n// “neutral” characters.\n\n// Blocks in the Unicode supplementary planes are excluded from this module due\n// to .\n\n/**\n * Returns true if the given Unicode codepoint identifies a character with\n * upright orientation.\n *\n * A character has upright orientation if it is drawn upright (unrotated)\n * whether the line is oriented horizontally or vertically, even if both\n * adjacent characters can be rotated. For example, a Chinese character is\n * always drawn upright. An uprightly oriented character causes an adjacent\n * “neutral” character to be drawn upright as well.\n * @private\n */\nexport function charHasUprightVerticalOrientation(char: number) {\n if (char === 0x02EA /* modifier letter yin departing tone mark */ ||\n char === 0x02EB /* modifier letter yang departing tone mark */) {\n return true;\n }\n\n // Return early for characters outside all ranges whose characters remain\n // upright in vertical writing mode.\n if (char < 0x1100) return false;\n\n if (isChar['Bopomofo Extended'](char)) return true;\n if (isChar['Bopomofo'](char)) return true;\n if (isChar['CJK Compatibility Forms'](char)) {\n if (!((char >= 0xFE49 /* dashed overline */ && char <= 0xFE4F) /* wavy low line */)) {\n return true;\n }\n }\n if (isChar['CJK Compatibility Ideographs'](char)) return true;\n if (isChar['CJK Compatibility'](char)) return true;\n if (isChar['CJK Radicals Supplement'](char)) return true;\n if (isChar['CJK Strokes'](char)) return true;\n if (isChar['CJK Symbols and Punctuation'](char)) {\n if (!((char >= 0x3008 /* left angle bracket */ && char <= 0x3011) /* right black lenticular bracket */) &&\n !((char >= 0x3014 /* left tortoise shell bracket */ && char <= 0x301F) /* low double prime quotation mark */) &&\n char !== 0x3030 /* wavy dash */) {\n return true;\n }\n }\n if (isChar['CJK Unified Ideographs Extension A'](char)) return true;\n if (isChar['CJK Unified Ideographs'](char)) return true;\n if (isChar['Enclosed CJK Letters and Months'](char)) return true;\n if (isChar['Hangul Compatibility Jamo'](char)) return true;\n if (isChar['Hangul Jamo Extended-A'](char)) return true;\n if (isChar['Hangul Jamo Extended-B'](char)) return true;\n if (isChar['Hangul Jamo'](char)) return true;\n if (isChar['Hangul Syllables'](char)) return true;\n if (isChar['Hiragana'](char)) return true;\n if (isChar['Ideographic Description Characters'](char)) return true;\n if (isChar['Kanbun'](char)) return true;\n if (isChar['Kangxi Radicals'](char)) return true;\n if (isChar['Katakana Phonetic Extensions'](char)) return true;\n if (isChar['Katakana'](char)) {\n if (char !== 0x30FC /* katakana-hiragana prolonged sound mark */) {\n return true;\n }\n }\n if (isChar['Halfwidth and Fullwidth Forms'](char)) {\n if (char !== 0xFF08 /* fullwidth left parenthesis */ &&\n char !== 0xFF09 /* fullwidth right parenthesis */ &&\n char !== 0xFF0D /* fullwidth hyphen-minus */ &&\n !((char >= 0xFF1A /* fullwidth colon */ && char <= 0xFF1E) /* fullwidth greater-than sign */) &&\n char !== 0xFF3B /* fullwidth left square bracket */ &&\n char !== 0xFF3D /* fullwidth right square bracket */ &&\n char !== 0xFF3F /* fullwidth low line */ &&\n !(char >= 0xFF5B /* fullwidth left curly bracket */ && char <= 0xFFDF) &&\n char !== 0xFFE3 /* fullwidth macron */ &&\n !(char >= 0xFFE8 /* halfwidth forms light vertical */ && char <= 0xFFEF)) {\n return true;\n }\n }\n if (isChar['Small Form Variants'](char)) {\n if (!((char >= 0xFE58 /* small em dash */ && char <= 0xFE5E) /* small right tortoise shell bracket */) &&\n !((char >= 0xFE63 /* small hyphen-minus */ && char <= 0xFE66) /* small equals sign */)) {\n return true;\n }\n }\n if (isChar['Unified Canadian Aboriginal Syllabics'](char)) return true;\n if (isChar['Unified Canadian Aboriginal Syllabics Extended'](char)) return true;\n if (isChar['Vertical Forms'](char)) return true;\n if (isChar['Yijing Hexagram Symbols'](char)) return true;\n if (isChar['Yi Syllables'](char)) return true;\n if (isChar['Yi Radicals'](char)) return true;\n\n return false;\n}\n\n/**\n * Returns true if the given Unicode codepoint identifies a character with\n * neutral orientation.\n *\n * A character has neutral orientation if it may be drawn rotated or unrotated\n * when the line is oriented vertically, depending on the orientation of the\n * adjacent characters. For example, along a verticlly oriented line, the vulgar\n * fraction ½ is drawn upright among Chinese characters but rotated among Latin\n * letters. A neutrally oriented character does not influence whether an\n * adjacent character is drawn upright or rotated.\n * @private\n */\nexport function charHasNeutralVerticalOrientation(char: number) {\n if (isChar['Latin-1 Supplement'](char)) {\n if (char === 0x00A7 /* section sign */ ||\n char === 0x00A9 /* copyright sign */ ||\n char === 0x00AE /* registered sign */ ||\n char === 0x00B1 /* plus-minus sign */ ||\n char === 0x00BC /* vulgar fraction one quarter */ ||\n char === 0x00BD /* vulgar fraction one half */ ||\n char === 0x00BE /* vulgar fraction three quarters */ ||\n char === 0x00D7 /* multiplication sign */ ||\n char === 0x00F7 /* division sign */) {\n return true;\n }\n }\n if (isChar['General Punctuation'](char)) {\n if (char === 0x2016 /* double vertical line */ ||\n char === 0x2020 /* dagger */ ||\n char === 0x2021 /* double dagger */ ||\n char === 0x2030 /* per mille sign */ ||\n char === 0x2031 /* per ten thousand sign */ ||\n char === 0x203B /* reference mark */ ||\n char === 0x203C /* double exclamation mark */ ||\n char === 0x2042 /* asterism */ ||\n char === 0x2047 /* double question mark */ ||\n char === 0x2048 /* question exclamation mark */ ||\n char === 0x2049 /* exclamation question mark */ ||\n char === 0x2051 /* two asterisks aligned vertically */) {\n return true;\n }\n }\n if (isChar['Letterlike Symbols'](char)) return true;\n if (isChar['Number Forms'](char)) return true;\n if (isChar['Miscellaneous Technical'](char)) {\n if ((char >= 0x2300 /* diameter sign */ && char <= 0x2307 /* wavy line */) ||\n (char >= 0x230C /* bottom right crop */ && char <= 0x231F /* bottom right corner */) ||\n (char >= 0x2324 /* up arrowhead between two horizontal bars */ && char <= 0x2328 /* keyboard */) ||\n char === 0x232B /* erase to the left */ ||\n (char >= 0x237D /* shouldered open box */ && char <= 0x239A /* clear screen symbol */) ||\n (char >= 0x23BE /* dentistry symbol light vertical and top right */ && char <= 0x23CD /* square foot */) ||\n char === 0x23CF /* eject symbol */ ||\n (char >= 0x23D1 /* metrical breve */ && char <= 0x23DB /* fuse */) ||\n (char >= 0x23E2 /* white trapezium */ && char <= 0x23FF)) {\n return true;\n }\n }\n if (isChar['Control Pictures'](char) && char !== 0x2423 /* open box */) return true;\n if (isChar['Optical Character Recognition'](char)) return true;\n if (isChar['Enclosed Alphanumerics'](char)) return true;\n if (isChar['Geometric Shapes'](char)) return true;\n if (isChar['Miscellaneous Symbols'](char)) {\n if (!((char >= 0x261A /* black left pointing index */ && char <= 0x261F) /* white down pointing index */)) {\n return true;\n }\n }\n if (isChar['Miscellaneous Symbols and Arrows'](char)) {\n if ((char >= 0x2B12 /* square with top half black */ && char <= 0x2B2F /* white vertical ellipse */) ||\n (char >= 0x2B50 /* white medium star */ && char <= 0x2B59 /* heavy circled saltire */) ||\n (char >= 0x2BB8 /* upwards white arrow from bar with horizontal bar */ && char <= 0x2BEB)) {\n return true;\n }\n }\n if (isChar['CJK Symbols and Punctuation'](char)) return true;\n if (isChar['Katakana'](char)) return true;\n if (isChar['Private Use Area'](char)) return true;\n if (isChar['CJK Compatibility Forms'](char)) return true;\n if (isChar['Small Form Variants'](char)) return true;\n if (isChar['Halfwidth and Fullwidth Forms'](char)) return true;\n\n if (char === 0x221E /* infinity */ ||\n char === 0x2234 /* therefore */ ||\n char === 0x2235 /* because */ ||\n (char >= 0x2700 /* black safety scissors */ && char <= 0x2767 /* rotated floral heart bullet */) ||\n (char >= 0x2776 /* dingbat negative circled digit one */ && char <= 0x2793 /* dingbat negative circled sans-serif number ten */) ||\n char === 0xFFFC /* object replacement character */ ||\n char === 0xFFFD /* replacement character */) {\n return true;\n }\n\n return false;\n}\n\n/**\n * Returns true if the given Unicode codepoint identifies a character with\n * rotated orientation.\n *\n * A character has rotated orientation if it is drawn rotated when the line is\n * oriented vertically, even if both adjacent characters are upright. For\n * example, a Latin letter is drawn rotated along a vertical line. A rotated\n * character causes an adjacent “neutral” character to be drawn rotated as well.\n * @private\n */\nexport function charHasRotatedVerticalOrientation(char: number) {\n return !(charHasUprightVerticalOrientation(char) ||\n charHasNeutralVerticalOrientation(char));\n}\n\nexport function charInComplexShapingScript(char: number) {\n return isChar['Arabic'](char) ||\n isChar['Arabic Supplement'](char) ||\n isChar['Arabic Extended-A'](char) ||\n isChar['Arabic Presentation Forms-A'](char) ||\n isChar['Arabic Presentation Forms-B'](char);\n}\n\nexport function charInRTLScript(char: number) {\n // Main blocks for Hebrew, Arabic, Thaana and other RTL scripts\n return (char >= 0x0590 && char <= 0x08FF) ||\n isChar['Arabic Presentation Forms-A'](char) ||\n isChar['Arabic Presentation Forms-B'](char);\n}\n\nexport function charInSupportedScript(char: number, canRenderRTL: boolean) {\n // This is a rough heuristic: whether we \"can render\" a script\n // actually depends on the properties of the font being used\n // and whether differences from the ideal rendering are considered\n // semantically significant.\n\n // Even in Latin script, we \"can't render\" combinations such as the fi\n // ligature, but we don't consider that semantically significant.\n if (!canRenderRTL && charInRTLScript(char)) {\n return false;\n }\n if ((char >= 0x0900 && char <= 0x0DFF) ||\n // Main blocks for Indic scripts and Sinhala\n (char >= 0x0F00 && char <= 0x109F) ||\n // Main blocks for Tibetan and Myanmar\n isChar['Khmer'](char)) {\n // These blocks cover common scripts that require\n // complex text shaping, based on unicode script metadata:\n // http://www.unicode.org/repos/cldr/trunk/common/properties/scriptMetadata.txt\n // where \"Web Rank <= 32\" \"Shaping Required = YES\"\n return false;\n }\n return true;\n}\n\nexport function stringContainsRTLText(chars: string): boolean {\n for (const char of chars) {\n if (charInRTLScript(char.charCodeAt(0))) {\n return true;\n }\n }\n return false;\n}\n\nexport function isStringInSupportedScript(chars: string, canRenderRTL: boolean) {\n for (const char of chars) {\n if (!charInSupportedScript(char.charCodeAt(0), canRenderRTL)) {\n return false;\n }\n }\n return true;\n}\n", "// @flow\n\nimport {Event, Evented} from '../util/evented';\nimport {getArrayBuffer} from '../util/ajax';\nimport browser from '../util/browser';\nimport assert from 'assert';\nimport {isWorker} from '../util/util';\n\nconst status = {\n unavailable: 'unavailable', // Not loaded\n deferred: 'deferred', // The plugin URL has been specified, but loading has been deferred\n loading: 'loading', // request in-flight\n loaded: 'loaded',\n error: 'error'\n};\n\nexport type PluginState = {\n pluginStatus: $Values;\n pluginURL: ?string\n};\n\ntype ErrorCallback = (error: ?Error) => void;\ntype PluginStateSyncCallback = (state: PluginState) => void;\nlet _completionCallback = null;\n\n//Variables defining the current state of the plugin\nlet pluginStatus = status.unavailable;\nlet pluginURL = null;\n\nexport const triggerPluginCompletionEvent = function(error: ?Error) {\n // NetworkError's are not correctly reflected by the plugin status which prevents reloading plugin\n if (error && typeof error === 'string' && error.indexOf('NetworkError') > -1) {\n pluginStatus = status.error;\n }\n\n if (_completionCallback) {\n _completionCallback(error);\n }\n};\n\nfunction sendPluginStateToWorker() {\n evented.fire(new Event('pluginStateChange', {pluginStatus, pluginURL}));\n}\n\nexport const evented = new Evented();\n\nexport const getRTLTextPluginStatus = function () {\n return pluginStatus;\n};\n\nexport const registerForPluginStateChange = function(callback: PluginStateSyncCallback) {\n // Do an initial sync of the state\n callback({pluginStatus, pluginURL});\n // Listen for all future state changes\n evented.on('pluginStateChange', callback);\n return callback;\n};\n\nexport const clearRTLTextPlugin = function() {\n pluginStatus = status.unavailable;\n pluginURL = null;\n};\n\nexport const setRTLTextPlugin = function(url: string, callback: ?ErrorCallback, deferred: boolean = false) {\n if (pluginStatus === status.deferred || pluginStatus === status.loading || pluginStatus === status.loaded) {\n throw new Error('setRTLTextPlugin cannot be called multiple times.');\n }\n pluginURL = browser.resolveURL(url);\n pluginStatus = status.deferred;\n _completionCallback = callback;\n sendPluginStateToWorker();\n\n //Start downloading the plugin immediately if not intending to lazy-load\n if (!deferred) {\n downloadRTLTextPlugin();\n }\n};\n\nexport const downloadRTLTextPlugin = function() {\n if (pluginStatus !== status.deferred || !pluginURL) {\n throw new Error('rtl-text-plugin cannot be downloaded unless a pluginURL is specified');\n }\n pluginStatus = status.loading;\n sendPluginStateToWorker();\n if (pluginURL) {\n getArrayBuffer({url: pluginURL}, (error) => {\n if (error) {\n triggerPluginCompletionEvent(error);\n } else {\n pluginStatus = status.loaded;\n sendPluginStateToWorker();\n }\n });\n }\n};\n\nexport const plugin: {\n applyArabicShaping: ?Function,\n processBidirectionalText: ?(string, Array) => Array,\n processStyledBidirectionalText: ?(string, Array, Array) => Array<[string, Array]>,\n isLoaded: () => boolean,\n isLoading: () => boolean,\n setState: (state: PluginState) => void,\n isParsed: () => boolean,\n getPluginURL: () => ?string\n} = {\n applyArabicShaping: null,\n processBidirectionalText: null,\n processStyledBidirectionalText: null,\n isLoaded() {\n return pluginStatus === status.loaded || // Main Thread: loaded if the completion callback returned successfully\n plugin.applyArabicShaping != null; // Web-worker: loaded if the plugin functions have been compiled\n },\n isLoading() { // Main Thread Only: query the loading status, this function does not return the correct value in the worker context.\n return pluginStatus === status.loading;\n },\n setState(state: PluginState) { // Worker thread only: this tells the worker threads that the plugin is available on the Main thread\n assert(isWorker(), 'Cannot set the state of the rtl-text-plugin when not in the web-worker context');\n\n pluginStatus = state.pluginStatus;\n pluginURL = state.pluginURL;\n },\n isParsed(): boolean {\n assert(isWorker(), 'rtl-text-plugin is only parsed on the worker-threads');\n\n return plugin.applyArabicShaping != null &&\n plugin.processBidirectionalText != null &&\n plugin.processStyledBidirectionalText != null;\n },\n getPluginURL(): ?string {\n assert(isWorker(), 'rtl-text-plugin url can only be queried from the worker threads');\n return pluginURL;\n }\n};\n\nexport const lazyLoadRTLTextPlugin = function() {\n if (!plugin.isLoading() &&\n !plugin.isLoaded() &&\n getRTLTextPluginStatus() === 'deferred'\n ) {\n downloadRTLTextPlugin();\n }\n};\n", "// @flow\n\nimport ZoomHistory from './zoom_history';\nimport {isStringInSupportedScript} from '../util/script_detection';\nimport {plugin as rtlTextPlugin} from '../source/rtl_text_plugin';\n\nimport type {TransitionSpecification} from '../style-spec/types';\n\nexport type CrossfadeParameters = {\n fromScale: number,\n toScale: number,\n t: number\n};\n\nclass EvaluationParameters {\n zoom: number;\n now: number;\n fadeDuration: number;\n zoomHistory: ZoomHistory;\n transition: TransitionSpecification;\n\n // \"options\" may also be another EvaluationParameters to copy, see CrossFadedProperty.possiblyEvaluate\n constructor(zoom: number, options?: *) {\n this.zoom = zoom;\n\n if (options) {\n this.now = options.now;\n this.fadeDuration = options.fadeDuration;\n this.zoomHistory = options.zoomHistory;\n this.transition = options.transition;\n } else {\n this.now = 0;\n this.fadeDuration = 0;\n this.zoomHistory = new ZoomHistory();\n this.transition = {};\n }\n }\n\n isSupportedScript(str: string): boolean {\n return isStringInSupportedScript(str, rtlTextPlugin.isLoaded());\n }\n\n crossFadingFactor() {\n if (this.fadeDuration === 0) {\n return 1;\n } else {\n return Math.min((this.now - this.zoomHistory.lastIntegerZoomTime) / this.fadeDuration, 1);\n }\n }\n\n getCrossfadeParameters(): CrossfadeParameters {\n const z = this.zoom;\n const fraction = z - Math.floor(z);\n const t = this.crossFadingFactor();\n\n return z > this.zoomHistory.lastIntegerZoom ?\n {fromScale: 2, toScale: 1, t: fraction + (1 - fraction) * t} :\n {fromScale: 0.5, toScale: 1, t: 1 - (1 - t) * fraction};\n }\n}\n\nexport default EvaluationParameters;\n", "// @flow\n\nimport assert from 'assert';\nimport {clone, extend, easeCubicInOut} from '../util/util';\nimport * as interpolate from '../style-spec/util/interpolate';\nimport {normalizePropertyExpression} from '../style-spec/expression';\nimport Color from '../style-spec/util/color';\nimport {register} from '../util/web_worker_transfer';\nimport EvaluationParameters from './evaluation_parameters';\n\nimport type {CanonicalTileID} from '../source/tile_id';\nimport type {StylePropertySpecification} from '../style-spec/style-spec';\nimport type {\n TransitionSpecification,\n PropertyValueSpecification\n} from '../style-spec/types';\n\nimport type {\n Feature,\n FeatureState,\n StylePropertyExpression,\n SourceExpression,\n CompositeExpression\n} from '../style-spec/expression';\n\ntype TimePoint = number;\n\nexport type CrossFaded = {\n to: T,\n from: T\n};\n\n/**\n * Implements a number of classes that define state and behavior for paint and layout properties, most\n * importantly their respective evaluation chains:\n *\n * Transitionable paint property value\n * → Transitioning paint property value\n * → Possibly evaluated paint property value\n * → Fully evaluated paint property value\n *\n * Layout property value\n * → Possibly evaluated layout property value\n * → Fully evaluated layout property value\n *\n * @module\n * @private\n */\n\n/**\n * Implementations of the `Property` interface:\n *\n * * Hold metadata about a property that's independent of any specific value: stuff like the type of the value,\n * the default value, etc. This comes from the style specification JSON.\n * * Define behavior that needs to be polymorphic across different properties: \"possibly evaluating\"\n * an input value (see below), and interpolating between two possibly-evaluted values.\n *\n * The type `T` is the fully-evaluated value type (e.g. `number`, `string`, `Color`).\n * The type `R` is the intermediate \"possibly evaluated\" value type. See below.\n *\n * There are two main implementations of the interface -- one for properties that allow data-driven values,\n * and one for properties that don't. There are a few \"special case\" implementations as well: one for properties\n * which cross-fade between two values rather than interpolating, one for `heatmap-color` and `line-gradient`,\n * and one for `light-position`.\n *\n * @private\n */\nexport interface Property {\n specification: StylePropertySpecification;\n possiblyEvaluate(value: PropertyValue, parameters: EvaluationParameters, canonical?: CanonicalTileID, availableImages?: Array): R;\n interpolate(a: R, b: R, t: number): R;\n}\n\n/**\n * `PropertyValue` represents the value part of a property key-value unit. It's used to represent both\n * paint and layout property values, and regardless of whether or not their property supports data-driven\n * expressions.\n *\n * `PropertyValue` stores the raw input value as seen in a style or a runtime styling API call, i.e. one of the\n * following:\n *\n * * A constant value of the type appropriate for the property\n * * A function which produces a value of that type (but functions are quasi-deprecated in favor of expressions)\n * * An expression which produces a value of that type\n * * \"undefined\"/\"not present\", in which case the property is assumed to take on its default value.\n *\n * In addition to storing the original input value, `PropertyValue` also stores a normalized representation,\n * effectively treating functions as if they are expressions, and constant or default values as if they are\n * (constant) expressions.\n *\n * @private\n */\nexport class PropertyValue {\n property: Property;\n value: PropertyValueSpecification | void;\n expression: StylePropertyExpression;\n\n constructor(property: Property, value: PropertyValueSpecification | void) {\n this.property = property;\n this.value = value;\n this.expression = normalizePropertyExpression(value === undefined ? property.specification.default : value, property.specification);\n }\n\n isDataDriven(): boolean {\n return this.expression.kind === 'source' || this.expression.kind === 'composite';\n }\n\n possiblyEvaluate(parameters: EvaluationParameters, canonical?: CanonicalTileID, availableImages?: Array): R {\n return this.property.possiblyEvaluate(this, parameters, canonical, availableImages);\n }\n}\n\n// ------- Transitionable -------\n\nexport type TransitionParameters = {\n now: TimePoint,\n transition: TransitionSpecification\n};\n\n/**\n * Paint properties are _transitionable_: they can change in a fluid manner, interpolating or cross-fading between\n * old and new value. The duration of the transition, and the delay before it begins, is configurable.\n *\n * `TransitionablePropertyValue` is a compositional class that stores both the property value and that transition\n * configuration.\n *\n * A `TransitionablePropertyValue` can calculate the next step in the evaluation chain for paint property values:\n * `TransitioningPropertyValue`.\n *\n * @private\n */\nclass TransitionablePropertyValue {\n property: Property;\n value: PropertyValue;\n transition: TransitionSpecification | void;\n\n constructor(property: Property) {\n this.property = property;\n this.value = new PropertyValue(property, undefined);\n }\n\n transitioned(parameters: TransitionParameters,\n prior: TransitioningPropertyValue): TransitioningPropertyValue {\n return new TransitioningPropertyValue(this.property, this.value, prior, // eslint-disable-line no-use-before-define\n extend({}, parameters.transition, this.transition), parameters.now);\n }\n\n untransitioned(): TransitioningPropertyValue {\n return new TransitioningPropertyValue(this.property, this.value, null, {}, 0); // eslint-disable-line no-use-before-define\n }\n}\n\n/**\n * A helper type: given an object type `Properties` whose values are each of type `Property`, it calculates\n * an object type with the same keys and values of type `TransitionablePropertyValue`.\n *\n * @private\n */\ntype TransitionablePropertyValues\n = $Exact<$ObjMap(p: Property) => TransitionablePropertyValue>>\n\n/**\n * `Transitionable` stores a map of all (property name, `TransitionablePropertyValue`) pairs for paint properties of a\n * given layer type. It can calculate the `TransitioningPropertyValue`s for all of them at once, producing a\n * `Transitioning` instance for the same set of properties.\n *\n * @private\n */\nexport class Transitionable {\n _properties: Properties;\n _values: TransitionablePropertyValues;\n\n constructor(properties: Properties) {\n this._properties = properties;\n this._values = (Object.create(properties.defaultTransitionablePropertyValues): any);\n }\n\n getValue(name: S): PropertyValueSpecification | void {\n return clone(this._values[name].value.value);\n }\n\n setValue(name: S, value: PropertyValueSpecification | void) {\n if (!this._values.hasOwnProperty(name)) {\n this._values[name] = new TransitionablePropertyValue(this._values[name].property);\n }\n // Note that we do not _remove_ an own property in the case where a value is being reset\n // to the default: the transition might still be non-default.\n this._values[name].value = new PropertyValue(this._values[name].property, value === null ? undefined : clone(value));\n }\n\n getTransition(name: S): TransitionSpecification | void {\n return clone(this._values[name].transition);\n }\n\n setTransition(name: S, value: TransitionSpecification | void) {\n if (!this._values.hasOwnProperty(name)) {\n this._values[name] = new TransitionablePropertyValue(this._values[name].property);\n }\n this._values[name].transition = clone(value) || undefined;\n }\n\n serialize() {\n const result: any = {};\n for (const property of Object.keys(this._values)) {\n const value = this.getValue(property);\n if (value !== undefined) {\n result[property] = value;\n }\n\n const transition = this.getTransition(property);\n if (transition !== undefined) {\n result[`${property}-transition`] = transition;\n }\n }\n return result;\n }\n\n transitioned(parameters: TransitionParameters, prior: Transitioning): Transitioning {\n const result = new Transitioning(this._properties); // eslint-disable-line no-use-before-define\n for (const property of Object.keys(this._values)) {\n result._values[property] = this._values[property].transitioned(parameters, prior._values[property]);\n }\n return result;\n }\n\n untransitioned(): Transitioning {\n const result = new Transitioning(this._properties); // eslint-disable-line no-use-before-define\n for (const property of Object.keys(this._values)) {\n result._values[property] = this._values[property].untransitioned();\n }\n return result;\n }\n}\n\n// ------- Transitioning -------\n\n/**\n * `TransitioningPropertyValue` implements the first of two intermediate steps in the evaluation chain of a paint\n * property value. In this step, transitions between old and new values are handled: as long as the transition is in\n * progress, `TransitioningPropertyValue` maintains a reference to the prior value, and interpolates between it and\n * the new value based on the current time and the configured transition duration and delay. The product is the next\n * step in the evaluation chain: the \"possibly evaluated\" result type `R`. See below for more on this concept.\n *\n * @private\n */\nclass TransitioningPropertyValue {\n property: Property;\n value: PropertyValue;\n prior: ?TransitioningPropertyValue;\n begin: TimePoint;\n end: TimePoint;\n\n constructor(property: Property,\n value: PropertyValue,\n prior: ?TransitioningPropertyValue,\n transition: TransitionSpecification,\n now: TimePoint) {\n this.property = property;\n this.value = value;\n this.begin = now + transition.delay || 0;\n this.end = this.begin + transition.duration || 0;\n if (property.specification.transition && (transition.delay || transition.duration)) {\n this.prior = prior;\n }\n }\n\n possiblyEvaluate(parameters: EvaluationParameters, canonical: CanonicalTileID, availableImages: Array): R {\n const now = parameters.now || 0;\n const finalValue = this.value.possiblyEvaluate(parameters, canonical, availableImages);\n const prior = this.prior;\n if (!prior) {\n // No prior value.\n return finalValue;\n } else if (now > this.end) {\n // Transition from prior value is now complete.\n this.prior = null;\n return finalValue;\n } else if (this.value.isDataDriven()) {\n // Transitions to data-driven properties are not supported.\n // We snap immediately to the data-driven value so that, when we perform layout,\n // we see the data-driven function and can use it to populate vertex buffers.\n this.prior = null;\n return finalValue;\n } else if (now < this.begin) {\n // Transition hasn't started yet.\n return prior.possiblyEvaluate(parameters, canonical, availableImages);\n } else {\n // Interpolate between recursively-calculated prior value and final.\n const t = (now - this.begin) / (this.end - this.begin);\n return this.property.interpolate(prior.possiblyEvaluate(parameters, canonical, availableImages), finalValue, easeCubicInOut(t));\n }\n }\n}\n\n/**\n * A helper type: given an object type `Properties` whose values are each of type `Property`, it calculates\n * an object type with the same keys and values of type `TransitioningPropertyValue`.\n *\n * @private\n */\ntype TransitioningPropertyValues\n = $Exact<$ObjMap(p: Property) => TransitioningPropertyValue>>\n\n/**\n * `Transitioning` stores a map of all (property name, `TransitioningPropertyValue`) pairs for paint properties of a\n * given layer type. It can calculate the possibly-evaluated values for all of them at once, producing a\n * `PossiblyEvaluated` instance for the same set of properties.\n *\n * @private\n */\nexport class Transitioning {\n _properties: Properties;\n _values: TransitioningPropertyValues;\n\n constructor(properties: Properties) {\n this._properties = properties;\n this._values = (Object.create(properties.defaultTransitioningPropertyValues): any);\n }\n\n possiblyEvaluate(parameters: EvaluationParameters, canonical?: CanonicalTileID, availableImages?: Array): PossiblyEvaluated {\n const result = new PossiblyEvaluated(this._properties); // eslint-disable-line no-use-before-define\n for (const property of Object.keys(this._values)) {\n result._values[property] = this._values[property].possiblyEvaluate(parameters, canonical, availableImages);\n }\n return result;\n }\n\n hasTransition() {\n for (const property of Object.keys(this._values)) {\n if (this._values[property].prior) {\n return true;\n }\n }\n return false;\n }\n}\n\n// ------- Layout -------\n\n/**\n * A helper type: given an object type `Properties` whose values are each of type `Property`, it calculates\n * an object type with the same keys and values of type `PropertyValue`.\n *\n * @private\n */\ntype PropertyValues\n = $Exact<$ObjMap(p: Property) => PropertyValue>>\n\n/**\n * Because layout properties are not transitionable, they have a simpler representation and evaluation chain than\n * paint properties: `PropertyValue`s are possibly evaluated, producing possibly evaluated values, which are then\n * fully evaluated.\n *\n * `Layout` stores a map of all (property name, `PropertyValue`) pairs for layout properties of a\n * given layer type. It can calculate the possibly-evaluated values for all of them at once, producing a\n * `PossiblyEvaluated` instance for the same set of properties.\n *\n * @private\n */\nexport class Layout {\n _properties: Properties;\n _values: PropertyValues;\n\n constructor(properties: Properties) {\n this._properties = properties;\n this._values = (Object.create(properties.defaultPropertyValues): any);\n }\n\n getValue(name: S) {\n return clone(this._values[name].value);\n }\n\n setValue(name: S, value: *) {\n this._values[name] = new PropertyValue(this._values[name].property, value === null ? undefined : clone(value));\n }\n\n serialize() {\n const result: any = {};\n for (const property of Object.keys(this._values)) {\n const value = this.getValue(property);\n if (value !== undefined) {\n result[property] = value;\n }\n }\n return result;\n }\n\n possiblyEvaluate(parameters: EvaluationParameters, canonical?: CanonicalTileID, availableImages?: Array): PossiblyEvaluated {\n const result = new PossiblyEvaluated(this._properties); // eslint-disable-line no-use-before-define\n for (const property of Object.keys(this._values)) {\n result._values[property] = this._values[property].possiblyEvaluate(parameters, canonical, availableImages);\n }\n return result;\n }\n}\n\n// ------- PossiblyEvaluated -------\n\n/**\n * \"Possibly evaluated value\" is an intermediate stage in the evaluation chain for both paint and layout property\n * values. The purpose of this stage is to optimize away unnecessary recalculations for data-driven properties. Code\n * which uses data-driven property values must assume that the value is dependent on feature data, and request that it\n * be evaluated for each feature. But when that property value is in fact a constant or camera function, the calculation\n * will not actually depend on the feature, and we can benefit from returning the prior result of having done the\n * evaluation once, ahead of time, in an intermediate step whose inputs are just the value and \"global\" parameters\n * such as current zoom level.\n *\n * `PossiblyEvaluatedValue` represents the three possible outcomes of this step: if the input value was a constant or\n * camera expression, then the \"possibly evaluated\" result is a constant value. Otherwise, the input value was either\n * a source or composite expression, and we must defer final evaluation until supplied a feature. We separate\n * the source and composite cases because they are handled differently when generating GL attributes, buffers, and\n * uniforms.\n *\n * Note that `PossiblyEvaluatedValue` (and `PossiblyEvaluatedPropertyValue`, below) are _not_ used for properties that\n * do not allow data-driven values. For such properties, we know that the \"possibly evaluated\" result is always a constant\n * scalar value. See below.\n *\n * @private\n */\ntype PossiblyEvaluatedValue =\n | {kind: 'constant', value: T}\n | SourceExpression\n | CompositeExpression;\n\n/**\n * `PossiblyEvaluatedPropertyValue` is used for data-driven paint and layout property values. It holds a\n * `PossiblyEvaluatedValue` and the `GlobalProperties` that were used to generate it. You're not allowed to supply\n * a different set of `GlobalProperties` when performing the final evaluation because they would be ignored in the\n * case where the input value was a constant or camera function.\n *\n * @private\n */\nexport class PossiblyEvaluatedPropertyValue {\n property: DataDrivenProperty;\n value: PossiblyEvaluatedValue;\n parameters: EvaluationParameters;\n\n constructor(property: DataDrivenProperty, value: PossiblyEvaluatedValue, parameters: EvaluationParameters) {\n this.property = property;\n this.value = value;\n this.parameters = parameters;\n }\n\n isConstant(): boolean {\n return this.value.kind === 'constant';\n }\n\n constantOr(value: T): T {\n if (this.value.kind === 'constant') {\n return this.value.value;\n } else {\n return value;\n }\n }\n\n evaluate(feature: Feature, featureState: FeatureState, canonical?: CanonicalTileID, availableImages?: Array): T {\n return this.property.evaluate(this.value, this.parameters, feature, featureState, canonical, availableImages);\n }\n}\n\n/**\n * A helper type: given an object type `Properties` whose values are each of type `Property`, it calculates\n * an object type with the same keys, and values of type `R`.\n *\n * For properties that don't allow data-driven values, `R` is a scalar type such as `number`, `string`, or `Color`.\n * For data-driven properties, it is `PossiblyEvaluatedPropertyValue`. Critically, the type definitions are set up\n * in a way that allows flow to know which of these two cases applies for any given property name, and if you attempt\n * to use a `PossiblyEvaluatedPropertyValue` as if it was a scalar, or vice versa, you will get a type error. (However,\n * there's at least one case in which flow fails to produce a type error that you should be aware of: in a context such\n * as `layer.paint.get('foo-opacity') === 0`, if `foo-opacity` is data-driven, than the left-hand side is of type\n * `PossiblyEvaluatedPropertyValue`, but flow will not complain about comparing this to a number using `===`.\n * See https://github.com/facebook/flow/issues/2359.)\n *\n * There's also a third, special case possiblity for `R`: for cross-faded properties, it's `?CrossFaded`.\n *\n * @private\n */\ntype PossiblyEvaluatedPropertyValues\n = $Exact<$ObjMap(p: Property) => R>>\n\n/**\n * `PossiblyEvaluated` stores a map of all (property name, `R`) pairs for paint or layout properties of a\n * given layer type.\n * @private\n */\nexport class PossiblyEvaluated {\n _properties: Properties;\n _values: PossiblyEvaluatedPropertyValues;\n\n constructor(properties: Properties) {\n this._properties = properties;\n this._values = (Object.create(properties.defaultPossiblyEvaluatedValues): any);\n }\n\n get(name: S): $ElementType, S> {\n return this._values[name];\n }\n}\n\n/**\n * An implementation of `Property` for properties that do not permit data-driven (source or composite) expressions.\n * This restriction allows us to declare statically that the result of possibly evaluating this kind of property\n * is in fact always the scalar type `T`, and can be used without further evaluating the value on a per-feature basis.\n *\n * @private\n */\nexport class DataConstantProperty implements Property {\n specification: StylePropertySpecification;\n\n constructor(specification: StylePropertySpecification) {\n this.specification = specification;\n }\n\n possiblyEvaluate(value: PropertyValue, parameters: EvaluationParameters): T {\n assert(!value.isDataDriven());\n return value.expression.evaluate(parameters);\n }\n\n interpolate(a: T, b: T, t: number): T {\n const interp: ?(a: T, b: T, t: number) => T = (interpolate: any)[this.specification.type];\n if (interp) {\n return interp(a, b, t);\n } else {\n return a;\n }\n }\n}\n\n/**\n * An implementation of `Property` for properties that permit data-driven (source or composite) expressions.\n * The result of possibly evaluating this kind of property is `PossiblyEvaluatedPropertyValue`; obtaining\n * a scalar value `T` requires further evaluation on a per-feature basis.\n *\n * @private\n */\nexport class DataDrivenProperty implements Property> {\n specification: StylePropertySpecification;\n overrides: ?Object;\n\n constructor(specification: StylePropertySpecification, overrides?: Object) {\n this.specification = specification;\n this.overrides = overrides;\n }\n\n possiblyEvaluate(value: PropertyValue>, parameters: EvaluationParameters, canonical?: CanonicalTileID, availableImages?: Array): PossiblyEvaluatedPropertyValue {\n if (value.expression.kind === 'constant' || value.expression.kind === 'camera') {\n return new PossiblyEvaluatedPropertyValue(this, {kind: 'constant', value: value.expression.evaluate(parameters, (null: any), {}, canonical, availableImages)}, parameters);\n } else {\n return new PossiblyEvaluatedPropertyValue(this, value.expression, parameters);\n }\n }\n\n interpolate(a: PossiblyEvaluatedPropertyValue,\n b: PossiblyEvaluatedPropertyValue,\n t: number): PossiblyEvaluatedPropertyValue {\n // If either possibly-evaluated value is non-constant, give up: we aren't able to interpolate data-driven values.\n if (a.value.kind !== 'constant' || b.value.kind !== 'constant') {\n return a;\n }\n\n // Special case hack solely for fill-outline-color. The undefined value is subsequently handled in\n // FillStyleLayer#recalculate, which sets fill-outline-color to the fill-color value if the former\n // is a PossiblyEvaluatedPropertyValue containing a constant undefined value. In addition to the\n // return value here, the other source of a PossiblyEvaluatedPropertyValue containing a constant\n // undefined value is the \"default value\" for fill-outline-color held in\n // `Properties#defaultPossiblyEvaluatedValues`, which serves as the prototype of\n // `PossiblyEvaluated#_values`.\n if (a.value.value === undefined || b.value.value === undefined) {\n return new PossiblyEvaluatedPropertyValue(this, {kind: 'constant', value: (undefined: any)}, a.parameters);\n }\n\n const interp: ?(a: T, b: T, t: number) => T = (interpolate: any)[this.specification.type];\n if (interp) {\n return new PossiblyEvaluatedPropertyValue(this, {kind: 'constant', value: interp(a.value.value, b.value.value, t)}, a.parameters);\n } else {\n return a;\n }\n }\n\n evaluate(value: PossiblyEvaluatedValue, parameters: EvaluationParameters, feature: Feature, featureState: FeatureState, canonical?: CanonicalTileID, availableImages?: Array): T {\n if (value.kind === 'constant') {\n return value.value;\n } else {\n return value.evaluate(parameters, feature, featureState, canonical, availableImages);\n }\n }\n}\n\n/**\n * An implementation of `Property` for data driven `line-pattern` which are transitioned by cross-fading\n * rather than interpolation.\n *\n * @private\n */\n\nexport class CrossFadedDataDrivenProperty extends DataDrivenProperty> {\n\n possiblyEvaluate(value: PropertyValue, PossiblyEvaluatedPropertyValue>>, parameters: EvaluationParameters, canonical?: CanonicalTileID, availableImages?: Array): PossiblyEvaluatedPropertyValue> {\n if (value.value === undefined) {\n return new PossiblyEvaluatedPropertyValue(this, {kind: 'constant', value: undefined}, parameters);\n } else if (value.expression.kind === 'constant') {\n const evaluatedValue = value.expression.evaluate(parameters, (null: any), {}, canonical, availableImages);\n const isImageExpression = value.property.specification.type === 'resolvedImage';\n const constantValue = isImageExpression && typeof evaluatedValue !== 'string' ? evaluatedValue.name : evaluatedValue;\n const constant = this._calculate(constantValue, constantValue, constantValue, parameters);\n return new PossiblyEvaluatedPropertyValue(this, {kind: 'constant', value: constant}, parameters);\n } else if (value.expression.kind === 'camera') {\n const cameraVal = this._calculate(\n value.expression.evaluate({zoom: parameters.zoom - 1.0}),\n value.expression.evaluate({zoom: parameters.zoom}),\n value.expression.evaluate({zoom: parameters.zoom + 1.0}),\n parameters);\n return new PossiblyEvaluatedPropertyValue(this, {kind: 'constant', value: cameraVal}, parameters);\n } else {\n // source or composite expression\n return new PossiblyEvaluatedPropertyValue(this, value.expression, parameters);\n }\n }\n\n evaluate(value: PossiblyEvaluatedValue>, globals: EvaluationParameters, feature: Feature, featureState: FeatureState, canonical?: CanonicalTileID, availableImages?: Array): ?CrossFaded {\n if (value.kind === 'source') {\n const constant = value.evaluate(globals, feature, featureState, canonical, availableImages);\n return this._calculate(constant, constant, constant, globals);\n } else if (value.kind === 'composite') {\n return this._calculate(\n value.evaluate({zoom: Math.floor(globals.zoom) - 1.0}, feature, featureState),\n value.evaluate({zoom: Math.floor(globals.zoom)}, feature, featureState),\n value.evaluate({zoom: Math.floor(globals.zoom) + 1.0}, feature, featureState),\n globals);\n } else {\n return value.value;\n }\n }\n\n _calculate(min: T, mid: T, max: T, parameters: EvaluationParameters): CrossFaded {\n const z = parameters.zoom;\n return z > parameters.zoomHistory.lastIntegerZoom ? {from: min, to: mid} : {from: max, to: mid};\n }\n\n interpolate(a: PossiblyEvaluatedPropertyValue>): PossiblyEvaluatedPropertyValue> {\n return a;\n }\n}\n/**\n * An implementation of `Property` for `*-pattern` and `line-dasharray`, which are transitioned by cross-fading\n * rather than interpolation.\n *\n * @private\n */\nexport class CrossFadedProperty implements Property> {\n specification: StylePropertySpecification;\n\n constructor(specification: StylePropertySpecification) {\n this.specification = specification;\n }\n\n possiblyEvaluate(value: PropertyValue>, parameters: EvaluationParameters, canonical?: CanonicalTileID, availableImages?: Array): ?CrossFaded {\n if (value.value === undefined) {\n return undefined;\n } else if (value.expression.kind === 'constant') {\n const constant = value.expression.evaluate(parameters, (null: any), {}, canonical, availableImages);\n return this._calculate(constant, constant, constant, parameters);\n } else {\n assert(!value.isDataDriven());\n return this._calculate(\n value.expression.evaluate(new EvaluationParameters(Math.floor(parameters.zoom - 1.0), parameters)),\n value.expression.evaluate(new EvaluationParameters(Math.floor(parameters.zoom), parameters)),\n value.expression.evaluate(new EvaluationParameters(Math.floor(parameters.zoom + 1.0), parameters)),\n parameters);\n }\n }\n\n _calculate(min: T, mid: T, max: T, parameters: EvaluationParameters): ?CrossFaded {\n const z = parameters.zoom;\n return z > parameters.zoomHistory.lastIntegerZoom ? {from: min, to: mid} : {from: max, to: mid};\n }\n\n interpolate(a: ?CrossFaded): ?CrossFaded {\n return a;\n }\n}\n\n/**\n * An implementation of `Property` for `heatmap-color` and `line-gradient`. Interpolation is a no-op, and\n * evaluation returns a boolean value in order to indicate its presence, but the real\n * evaluation happens in StyleLayer classes.\n *\n * @private\n */\n\nexport class ColorRampProperty implements Property {\n specification: StylePropertySpecification;\n\n constructor(specification: StylePropertySpecification) {\n this.specification = specification;\n }\n\n possiblyEvaluate(value: PropertyValue, parameters: EvaluationParameters, canonical?: CanonicalTileID, availableImages?: Array): boolean {\n return !!value.expression.evaluate(parameters, (null: any), {}, canonical, availableImages);\n }\n\n interpolate(): boolean { return false; }\n}\n\n/**\n * `Properties` holds objects containing default values for the layout or paint property set of a given\n * layer type. These objects are immutable, and they are used as the prototypes for the `_values` members of\n * `Transitionable`, `Transitioning`, `Layout`, and `PossiblyEvaluated`. This allows these classes to avoid\n * doing work in the common case where a property has no explicit value set and should be considered to take\n * on the default value: using `for (const property of Object.keys(this._values))`, they can iterate over\n * only the _own_ properties of `_values`, skipping repeated calculation of transitions and possible/final\n * evaluations for defaults, the result of which will always be the same.\n *\n * @private\n */\nexport class Properties {\n properties: Props;\n defaultPropertyValues: PropertyValues;\n defaultTransitionablePropertyValues: TransitionablePropertyValues;\n defaultTransitioningPropertyValues: TransitioningPropertyValues;\n defaultPossiblyEvaluatedValues: PossiblyEvaluatedPropertyValues;\n overridableProperties: Array;\n\n constructor(properties: Props) {\n this.properties = properties;\n this.defaultPropertyValues = ({}: any);\n this.defaultTransitionablePropertyValues = ({}: any);\n this.defaultTransitioningPropertyValues = ({}: any);\n this.defaultPossiblyEvaluatedValues = ({}: any);\n this.overridableProperties = ([]: any);\n\n for (const property in properties) {\n const prop = properties[property];\n if (prop.specification.overridable) {\n this.overridableProperties.push(property);\n }\n const defaultPropertyValue = this.defaultPropertyValues[property] =\n new PropertyValue(prop, undefined);\n const defaultTransitionablePropertyValue = this.defaultTransitionablePropertyValues[property] =\n new TransitionablePropertyValue(prop);\n this.defaultTransitioningPropertyValues[property] =\n defaultTransitionablePropertyValue.untransitioned();\n this.defaultPossiblyEvaluatedValues[property] =\n defaultPropertyValue.possiblyEvaluate(({}: any));\n }\n }\n}\n\nregister('DataDrivenProperty', DataDrivenProperty);\nregister('DataConstantProperty', DataConstantProperty);\nregister('CrossFadedDataDrivenProperty', CrossFadedDataDrivenProperty);\nregister('CrossFadedProperty', CrossFadedProperty);\nregister('ColorRampProperty', ColorRampProperty);\n", "// @flow\n\nimport {endsWith, filterObject} from '../util/util';\n\nimport styleSpec from '../style-spec/reference/latest';\nimport {\n validateStyle,\n validateLayoutProperty,\n validatePaintProperty,\n emitValidationErrors\n} from './validate_style';\nimport {Evented} from '../util/evented';\nimport {Layout, Transitionable, Transitioning, Properties, PossiblyEvaluated, PossiblyEvaluatedPropertyValue} from './properties';\nimport {supportsPropertyExpression} from '../style-spec/util/properties';\n\nimport type {FeatureState} from '../style-spec/expression';\nimport type {Bucket} from '../data/bucket';\nimport type Point from '@mapbox/point-geometry';\nimport type {FeatureFilter} from '../style-spec/feature_filter';\nimport type {TransitionParameters, PropertyValue} from './properties';\nimport type EvaluationParameters, {CrossfadeParameters} from './evaluation_parameters';\nimport type Transform from '../geo/transform';\nimport type {\n LayerSpecification,\n FilterSpecification\n} from '../style-spec/types';\nimport type {CustomLayerInterface} from './style_layer/custom_style_layer';\nimport type Map from '../ui/map';\nimport type {StyleSetterOptions} from './style';\n\nconst TRANSITION_SUFFIX = '-transition';\n\nclass StyleLayer extends Evented {\n id: string;\n metadata: mixed;\n type: string;\n source: string;\n sourceLayer: ?string;\n minzoom: ?number;\n maxzoom: ?number;\n filter: FilterSpecification | void;\n visibility: 'visible' | 'none' | void;\n _crossfadeParameters: CrossfadeParameters;\n\n _unevaluatedLayout: Layout;\n +layout: mixed;\n\n _transitionablePaint: Transitionable;\n _transitioningPaint: Transitioning;\n +paint: mixed;\n\n _featureFilter: FeatureFilter;\n\n +queryRadius: (bucket: Bucket) => number;\n +queryIntersectsFeature: (queryGeometry: Array,\n feature: VectorTileFeature,\n featureState: FeatureState,\n geometry: Array>,\n zoom: number,\n transform: Transform,\n pixelsToTileUnits: number,\n pixelPosMatrix: Float32Array) => boolean | number;\n\n +onAdd: ?(map: Map) => void;\n +onRemove: ?(map: Map) => void;\n\n constructor(layer: LayerSpecification | CustomLayerInterface, properties: $ReadOnly<{layout?: Properties<*>, paint?: Properties<*>}>) {\n super();\n\n this.id = layer.id;\n this.type = layer.type;\n this._featureFilter = {filter: () => true, needGeometry: false};\n\n if (layer.type === 'custom') return;\n\n layer = ((layer: any): LayerSpecification);\n\n this.metadata = layer.metadata;\n this.minzoom = layer.minzoom;\n this.maxzoom = layer.maxzoom;\n\n if (layer.type !== 'background') {\n this.source = layer.source;\n this.sourceLayer = layer['source-layer'];\n this.filter = layer.filter;\n }\n\n if (properties.layout) {\n this._unevaluatedLayout = new Layout(properties.layout);\n }\n\n if (properties.paint) {\n this._transitionablePaint = new Transitionable(properties.paint);\n\n for (const property in layer.paint) {\n this.setPaintProperty(property, layer.paint[property], {validate: false});\n }\n for (const property in layer.layout) {\n this.setLayoutProperty(property, layer.layout[property], {validate: false});\n }\n\n this._transitioningPaint = this._transitionablePaint.untransitioned();\n //$FlowFixMe\n this.paint = new PossiblyEvaluated(properties.paint);\n }\n }\n\n getCrossfadeParameters() {\n return this._crossfadeParameters;\n }\n\n getLayoutProperty(name: string) {\n if (name === 'visibility') {\n return this.visibility;\n }\n\n return this._unevaluatedLayout.getValue(name);\n }\n\n setLayoutProperty(name: string, value: any, options: StyleSetterOptions = {}) {\n if (value !== null && value !== undefined) {\n const key = `layers.${this.id}.layout.${name}`;\n if (this._validate(validateLayoutProperty, key, name, value, options)) {\n return;\n }\n }\n\n if (name === 'visibility') {\n this.visibility = value;\n return;\n }\n\n this._unevaluatedLayout.setValue(name, value);\n }\n\n getPaintProperty(name: string) {\n if (endsWith(name, TRANSITION_SUFFIX)) {\n return this._transitionablePaint.getTransition(name.slice(0, -TRANSITION_SUFFIX.length));\n } else {\n return this._transitionablePaint.getValue(name);\n }\n }\n\n setPaintProperty(name: string, value: mixed, options: StyleSetterOptions = {}) {\n if (value !== null && value !== undefined) {\n const key = `layers.${this.id}.paint.${name}`;\n if (this._validate(validatePaintProperty, key, name, value, options)) {\n return false;\n }\n }\n\n if (endsWith(name, TRANSITION_SUFFIX)) {\n this._transitionablePaint.setTransition(name.slice(0, -TRANSITION_SUFFIX.length), (value: any) || undefined);\n return false;\n } else {\n const transitionable = this._transitionablePaint._values[name];\n const isCrossFadedProperty = transitionable.property.specification[\"property-type\"] === 'cross-faded-data-driven';\n const wasDataDriven = transitionable.value.isDataDriven();\n const oldValue = transitionable.value;\n\n this._transitionablePaint.setValue(name, value);\n this._handleSpecialPaintPropertyUpdate(name);\n\n const newValue = this._transitionablePaint._values[name].value;\n const isDataDriven = newValue.isDataDriven();\n\n // if a cross-faded value is changed, we need to make sure the new icons get added to each tile's iconAtlas\n // so a call to _updateLayer is necessary, and we return true from this function so it gets called in\n // Style#setPaintProperty\n return isDataDriven || wasDataDriven || isCrossFadedProperty || this._handleOverridablePaintPropertyUpdate(name, oldValue, newValue);\n }\n }\n\n _handleSpecialPaintPropertyUpdate(_: string) {\n // No-op; can be overridden by derived classes.\n }\n\n // eslint-disable-next-line no-unused-vars\n _handleOverridablePaintPropertyUpdate(name: string, oldValue: PropertyValue, newValue: PropertyValue): boolean {\n // No-op; can be overridden by derived classes.\n return false;\n }\n\n isHidden(zoom: number) {\n if (this.minzoom && zoom < this.minzoom) return true;\n if (this.maxzoom && zoom >= this.maxzoom) return true;\n return this.visibility === 'none';\n }\n\n updateTransitions(parameters: TransitionParameters) {\n this._transitioningPaint = this._transitionablePaint.transitioned(parameters, this._transitioningPaint);\n }\n\n hasTransition() {\n return this._transitioningPaint.hasTransition();\n }\n\n recalculate(parameters: EvaluationParameters, availableImages: Array) {\n if (parameters.getCrossfadeParameters) {\n this._crossfadeParameters = parameters.getCrossfadeParameters();\n }\n\n if (this._unevaluatedLayout) {\n (this: any).layout = this._unevaluatedLayout.possiblyEvaluate(parameters, undefined, availableImages);\n }\n\n (this: any).paint = this._transitioningPaint.possiblyEvaluate(parameters, undefined, availableImages);\n }\n\n serialize() {\n const output: any = {\n 'id': this.id,\n 'type': this.type,\n 'source': this.source,\n 'source-layer': this.sourceLayer,\n 'metadata': this.metadata,\n 'minzoom': this.minzoom,\n 'maxzoom': this.maxzoom,\n 'filter': this.filter,\n 'layout': this._unevaluatedLayout && this._unevaluatedLayout.serialize(),\n 'paint': this._transitionablePaint && this._transitionablePaint.serialize()\n };\n\n if (this.visibility) {\n output.layout = output.layout || {};\n output.layout.visibility = this.visibility;\n }\n\n return filterObject(output, (value, key) => {\n return value !== undefined &&\n !(key === 'layout' && !Object.keys(value).length) &&\n !(key === 'paint' && !Object.keys(value).length);\n });\n }\n\n _validate(validate: Function, key: string, name: string, value: mixed, options: StyleSetterOptions = {}) {\n if (options && options.validate === false) {\n return false;\n }\n return emitValidationErrors(this, validate.call(validateStyle, {\n key,\n layerType: this.type,\n objectKey: name,\n value,\n styleSpec,\n // Workaround for https://github.com/mapbox/mapbox-gl-js/issues/2407\n style: {glyphs: true, sprite: true}\n }));\n }\n\n is3D() {\n return false;\n }\n\n isTileClipped() {\n return false;\n }\n\n hasOffscreenPass() {\n return false;\n }\n\n resize() {\n // noop\n }\n\n isStateDependent() {\n for (const property in (this: any).paint._values) {\n const value = (this: any).paint.get(property);\n if (!(value instanceof PossiblyEvaluatedPropertyValue) || !supportsPropertyExpression(value.property.specification)) {\n continue;\n }\n\n if ((value.value.kind === 'source' || value.value.kind === 'composite') &&\n value.value.isStateDependent) {\n return true;\n }\n }\n return false;\n }\n}\n\nexport default StyleLayer;\n", "// @flow\n\n// Note: all \"sizes\" are measured in bytes\n\nimport assert from 'assert';\n\nimport type {Transferable} from '../types/transferable';\n\nconst viewTypes = {\n 'Int8': Int8Array,\n 'Uint8': Uint8Array,\n 'Int16': Int16Array,\n 'Uint16': Uint16Array,\n 'Int32': Int32Array,\n 'Uint32': Uint32Array,\n 'Float32': Float32Array\n};\n\nexport type ViewType = $Keys;\n\n/**\n * @private\n */\nclass Struct {\n _pos1: number;\n _pos2: number;\n _pos4: number;\n _pos8: number;\n +_structArray: StructArray;\n\n // The following properties are defined on the prototype of sub classes.\n size: number;\n\n /**\n * @param {StructArray} structArray The StructArray the struct is stored in\n * @param {number} index The index of the struct in the StructArray.\n * @private\n */\n constructor(structArray: StructArray, index: number) {\n (this: any)._structArray = structArray;\n this._pos1 = index * this.size;\n this._pos2 = this._pos1 / 2;\n this._pos4 = this._pos1 / 4;\n this._pos8 = this._pos1 / 8;\n }\n}\n\nconst DEFAULT_CAPACITY = 128;\nconst RESIZE_MULTIPLIER = 5;\n\nexport type StructArrayMember = {\n name: string,\n type: ViewType,\n components: number,\n offset: number\n};\n\nexport type StructArrayLayout = {\n members: Array,\n size: number,\n alignment: ?number\n}\n\nexport type SerializedStructArray = {\n length: number,\n arrayBuffer: ArrayBuffer\n};\n\n/**\n * `StructArray` provides an abstraction over `ArrayBuffer` and `TypedArray`\n * making it behave like an array of typed structs.\n *\n * Conceptually, a StructArray is comprised of elements, i.e., instances of its\n * associated struct type. Each particular struct type, together with an\n * alignment size, determines the memory layout of a StructArray whose elements\n * are of that type. Thus, for each such layout that we need, we have\n * a corrseponding StructArrayLayout class, inheriting from StructArray and\n * implementing `emplaceBack()` and `_refreshViews()`.\n *\n * In some cases, where we need to access particular elements of a StructArray,\n * we implement a more specific subclass that inherits from one of the\n * StructArrayLayouts and adds a `get(i): T` accessor that returns a structured\n * object whose properties are proxies into the underlying memory space for the\n * i-th element. This affords the convience of working with (seemingly) plain\n * Javascript objects without the overhead of serializing/deserializing them\n * into ArrayBuffers for efficient web worker transfer.\n *\n * @private\n */\nclass StructArray {\n capacity: number;\n length: number;\n isTransferred: boolean;\n arrayBuffer: ArrayBuffer;\n uint8: Uint8Array;\n\n // The following properties are defined on the prototype.\n members: Array;\n bytesPerElement: number;\n +emplaceBack: Function;\n +emplace: Function;\n\n constructor() {\n this.isTransferred = false;\n this.capacity = -1;\n this.resize(0);\n }\n\n /**\n * Serialize a StructArray instance. Serializes both the raw data and the\n * metadata needed to reconstruct the StructArray base class during\n * deserialization.\n * @private\n */\n static serialize(array: StructArray, transferables?: Array): SerializedStructArray {\n assert(!array.isTransferred);\n\n array._trim();\n\n if (transferables) {\n array.isTransferred = true;\n transferables.push(array.arrayBuffer);\n }\n\n return {\n length: array.length,\n arrayBuffer: array.arrayBuffer,\n };\n }\n\n static deserialize(input: SerializedStructArray) {\n const structArray = Object.create(this.prototype);\n structArray.arrayBuffer = input.arrayBuffer;\n structArray.length = input.length;\n structArray.capacity = input.arrayBuffer.byteLength / structArray.bytesPerElement;\n structArray._refreshViews();\n return structArray;\n }\n\n /**\n * Resize the array to discard unused capacity.\n */\n _trim() {\n if (this.length !== this.capacity) {\n this.capacity = this.length;\n this.arrayBuffer = this.arrayBuffer.slice(0, this.length * this.bytesPerElement);\n this._refreshViews();\n }\n }\n\n /**\n * Resets the the length of the array to 0 without de-allocating capcacity.\n */\n clear() {\n this.length = 0;\n }\n\n /**\n * Resize the array.\n * If `n` is greater than the current length then additional elements with undefined values are added.\n * If `n` is less than the current length then the array will be reduced to the first `n` elements.\n * @param {number} n The new size of the array.\n */\n resize(n: number) {\n assert(!this.isTransferred);\n this.reserve(n);\n this.length = n;\n }\n\n /**\n * Indicate a planned increase in size, so that any necessary allocation may\n * be done once, ahead of time.\n * @param {number} n The expected size of the array.\n */\n reserve(n: number) {\n if (n > this.capacity) {\n this.capacity = Math.max(n, Math.floor(this.capacity * RESIZE_MULTIPLIER), DEFAULT_CAPACITY);\n this.arrayBuffer = new ArrayBuffer(this.capacity * this.bytesPerElement);\n\n const oldUint8Array = this.uint8;\n this._refreshViews();\n if (oldUint8Array) this.uint8.set(oldUint8Array);\n }\n }\n\n /**\n * Create TypedArray views for the current ArrayBuffer.\n */\n _refreshViews() {\n throw new Error('_refreshViews() must be implemented by each concrete StructArray layout');\n }\n}\n\n/**\n * Given a list of member fields, create a full StructArrayLayout, in\n * particular calculating the correct byte offset for each field. This data\n * is used at build time to generate StructArrayLayout_*#emplaceBack() and\n * other accessors, and at runtime for binding vertex buffer attributes.\n *\n * @private\n */\nfunction createLayout(\n members: Array<{ name: string, type: ViewType, +components?: number, }>,\n alignment: number = 1\n): StructArrayLayout {\n\n let offset = 0;\n let maxSize = 0;\n const layoutMembers = members.map((member) => {\n assert(member.name.length);\n const typeSize = sizeOf(member.type);\n const memberOffset = offset = align(offset, Math.max(alignment, typeSize));\n const components = member.components || 1;\n\n maxSize = Math.max(maxSize, typeSize);\n offset += typeSize * components;\n\n return {\n name: member.name,\n type: member.type,\n components,\n offset: memberOffset,\n };\n });\n\n const size = align(offset, Math.max(maxSize, alignment));\n\n return {\n members: layoutMembers,\n size,\n alignment\n };\n}\n\nfunction sizeOf(type: ViewType): number {\n return viewTypes[type].BYTES_PER_ELEMENT;\n}\n\nfunction align(offset: number, size: number): number {\n return Math.ceil(offset / size) * size;\n}\n\nexport {StructArray, Struct, viewTypes, createLayout};\n", "// This file is generated. Edit build/generate-struct-arrays.js, then run `yarn run codegen`.\n// @flow\n\nimport assert from 'assert';\nimport {Struct, StructArray} from '../util/struct_array';\nimport {register} from '../util/web_worker_transfer';\nimport Point from '@mapbox/point-geometry';\n\n/**\n * Implementation of the StructArray layout:\n * [0]: Int16[2]\n *\n * @private\n */\nclass StructArrayLayout2i4 extends StructArray {\n uint8: Uint8Array;\n int16: Int16Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.int16 = new Int16Array(this.arrayBuffer);\n }\n\n emplaceBack(v0: number, v1: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1);\n }\n\n emplace(i: number, v0: number, v1: number) {\n const o2 = i * 2;\n this.int16[o2 + 0] = v0;\n this.int16[o2 + 1] = v1;\n return i;\n }\n}\n\nStructArrayLayout2i4.prototype.bytesPerElement = 4;\nregister('StructArrayLayout2i4', StructArrayLayout2i4);\n\n/**\n * Implementation of the StructArray layout:\n * [0]: Int16[4]\n *\n * @private\n */\nclass StructArrayLayout4i8 extends StructArray {\n uint8: Uint8Array;\n int16: Int16Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.int16 = new Int16Array(this.arrayBuffer);\n }\n\n emplaceBack(v0: number, v1: number, v2: number, v3: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1, v2, v3);\n }\n\n emplace(i: number, v0: number, v1: number, v2: number, v3: number) {\n const o2 = i * 4;\n this.int16[o2 + 0] = v0;\n this.int16[o2 + 1] = v1;\n this.int16[o2 + 2] = v2;\n this.int16[o2 + 3] = v3;\n return i;\n }\n}\n\nStructArrayLayout4i8.prototype.bytesPerElement = 8;\nregister('StructArrayLayout4i8', StructArrayLayout4i8);\n\n/**\n * Implementation of the StructArray layout:\n * [0]: Int16[2]\n * [4]: Int16[4]\n *\n * @private\n */\nclass StructArrayLayout2i4i12 extends StructArray {\n uint8: Uint8Array;\n int16: Int16Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.int16 = new Int16Array(this.arrayBuffer);\n }\n\n emplaceBack(v0: number, v1: number, v2: number, v3: number, v4: number, v5: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1, v2, v3, v4, v5);\n }\n\n emplace(i: number, v0: number, v1: number, v2: number, v3: number, v4: number, v5: number) {\n const o2 = i * 6;\n this.int16[o2 + 0] = v0;\n this.int16[o2 + 1] = v1;\n this.int16[o2 + 2] = v2;\n this.int16[o2 + 3] = v3;\n this.int16[o2 + 4] = v4;\n this.int16[o2 + 5] = v5;\n return i;\n }\n}\n\nStructArrayLayout2i4i12.prototype.bytesPerElement = 12;\nregister('StructArrayLayout2i4i12', StructArrayLayout2i4i12);\n\n/**\n * Implementation of the StructArray layout:\n * [0]: Int16[2]\n * [4]: Uint8[4]\n *\n * @private\n */\nclass StructArrayLayout2i4ub8 extends StructArray {\n uint8: Uint8Array;\n int16: Int16Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.int16 = new Int16Array(this.arrayBuffer);\n }\n\n emplaceBack(v0: number, v1: number, v2: number, v3: number, v4: number, v5: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1, v2, v3, v4, v5);\n }\n\n emplace(i: number, v0: number, v1: number, v2: number, v3: number, v4: number, v5: number) {\n const o2 = i * 4;\n const o1 = i * 8;\n this.int16[o2 + 0] = v0;\n this.int16[o2 + 1] = v1;\n this.uint8[o1 + 4] = v2;\n this.uint8[o1 + 5] = v3;\n this.uint8[o1 + 6] = v4;\n this.uint8[o1 + 7] = v5;\n return i;\n }\n}\n\nStructArrayLayout2i4ub8.prototype.bytesPerElement = 8;\nregister('StructArrayLayout2i4ub8', StructArrayLayout2i4ub8);\n\n/**\n * Implementation of the StructArray layout:\n * [0]: Float32[2]\n *\n * @private\n */\nclass StructArrayLayout2f8 extends StructArray {\n uint8: Uint8Array;\n float32: Float32Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.float32 = new Float32Array(this.arrayBuffer);\n }\n\n emplaceBack(v0: number, v1: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1);\n }\n\n emplace(i: number, v0: number, v1: number) {\n const o4 = i * 2;\n this.float32[o4 + 0] = v0;\n this.float32[o4 + 1] = v1;\n return i;\n }\n}\n\nStructArrayLayout2f8.prototype.bytesPerElement = 8;\nregister('StructArrayLayout2f8', StructArrayLayout2f8);\n\n/**\n * Implementation of the StructArray layout:\n * [0]: Uint16[10]\n *\n * @private\n */\nclass StructArrayLayout10ui20 extends StructArray {\n uint8: Uint8Array;\n uint16: Uint16Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.uint16 = new Uint16Array(this.arrayBuffer);\n }\n\n emplaceBack(v0: number, v1: number, v2: number, v3: number, v4: number, v5: number, v6: number, v7: number, v8: number, v9: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1, v2, v3, v4, v5, v6, v7, v8, v9);\n }\n\n emplace(i: number, v0: number, v1: number, v2: number, v3: number, v4: number, v5: number, v6: number, v7: number, v8: number, v9: number) {\n const o2 = i * 10;\n this.uint16[o2 + 0] = v0;\n this.uint16[o2 + 1] = v1;\n this.uint16[o2 + 2] = v2;\n this.uint16[o2 + 3] = v3;\n this.uint16[o2 + 4] = v4;\n this.uint16[o2 + 5] = v5;\n this.uint16[o2 + 6] = v6;\n this.uint16[o2 + 7] = v7;\n this.uint16[o2 + 8] = v8;\n this.uint16[o2 + 9] = v9;\n return i;\n }\n}\n\nStructArrayLayout10ui20.prototype.bytesPerElement = 20;\nregister('StructArrayLayout10ui20', StructArrayLayout10ui20);\n\n/**\n * Implementation of the StructArray layout:\n * [0]: Int16[4]\n * [8]: Uint16[4]\n * [16]: Int16[4]\n *\n * @private\n */\nclass StructArrayLayout4i4ui4i24 extends StructArray {\n uint8: Uint8Array;\n int16: Int16Array;\n uint16: Uint16Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.int16 = new Int16Array(this.arrayBuffer);\n this.uint16 = new Uint16Array(this.arrayBuffer);\n }\n\n emplaceBack(v0: number, v1: number, v2: number, v3: number, v4: number, v5: number, v6: number, v7: number, v8: number, v9: number, v10: number, v11: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11);\n }\n\n emplace(i: number, v0: number, v1: number, v2: number, v3: number, v4: number, v5: number, v6: number, v7: number, v8: number, v9: number, v10: number, v11: number) {\n const o2 = i * 12;\n this.int16[o2 + 0] = v0;\n this.int16[o2 + 1] = v1;\n this.int16[o2 + 2] = v2;\n this.int16[o2 + 3] = v3;\n this.uint16[o2 + 4] = v4;\n this.uint16[o2 + 5] = v5;\n this.uint16[o2 + 6] = v6;\n this.uint16[o2 + 7] = v7;\n this.int16[o2 + 8] = v8;\n this.int16[o2 + 9] = v9;\n this.int16[o2 + 10] = v10;\n this.int16[o2 + 11] = v11;\n return i;\n }\n}\n\nStructArrayLayout4i4ui4i24.prototype.bytesPerElement = 24;\nregister('StructArrayLayout4i4ui4i24', StructArrayLayout4i4ui4i24);\n\n/**\n * Implementation of the StructArray layout:\n * [0]: Float32[3]\n *\n * @private\n */\nclass StructArrayLayout3f12 extends StructArray {\n uint8: Uint8Array;\n float32: Float32Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.float32 = new Float32Array(this.arrayBuffer);\n }\n\n emplaceBack(v0: number, v1: number, v2: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1, v2);\n }\n\n emplace(i: number, v0: number, v1: number, v2: number) {\n const o4 = i * 3;\n this.float32[o4 + 0] = v0;\n this.float32[o4 + 1] = v1;\n this.float32[o4 + 2] = v2;\n return i;\n }\n}\n\nStructArrayLayout3f12.prototype.bytesPerElement = 12;\nregister('StructArrayLayout3f12', StructArrayLayout3f12);\n\n/**\n * Implementation of the StructArray layout:\n * [0]: Uint32[1]\n *\n * @private\n */\nclass StructArrayLayout1ul4 extends StructArray {\n uint8: Uint8Array;\n uint32: Uint32Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.uint32 = new Uint32Array(this.arrayBuffer);\n }\n\n emplaceBack(v0: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0);\n }\n\n emplace(i: number, v0: number) {\n const o4 = i * 1;\n this.uint32[o4 + 0] = v0;\n return i;\n }\n}\n\nStructArrayLayout1ul4.prototype.bytesPerElement = 4;\nregister('StructArrayLayout1ul4', StructArrayLayout1ul4);\n\n/**\n * Implementation of the StructArray layout:\n * [0]: Int16[6]\n * [12]: Uint32[1]\n * [16]: Uint16[2]\n *\n * @private\n */\nclass StructArrayLayout6i1ul2ui20 extends StructArray {\n uint8: Uint8Array;\n int16: Int16Array;\n uint32: Uint32Array;\n uint16: Uint16Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.int16 = new Int16Array(this.arrayBuffer);\n this.uint32 = new Uint32Array(this.arrayBuffer);\n this.uint16 = new Uint16Array(this.arrayBuffer);\n }\n\n emplaceBack(v0: number, v1: number, v2: number, v3: number, v4: number, v5: number, v6: number, v7: number, v8: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1, v2, v3, v4, v5, v6, v7, v8);\n }\n\n emplace(i: number, v0: number, v1: number, v2: number, v3: number, v4: number, v5: number, v6: number, v7: number, v8: number) {\n const o2 = i * 10;\n const o4 = i * 5;\n this.int16[o2 + 0] = v0;\n this.int16[o2 + 1] = v1;\n this.int16[o2 + 2] = v2;\n this.int16[o2 + 3] = v3;\n this.int16[o2 + 4] = v4;\n this.int16[o2 + 5] = v5;\n this.uint32[o4 + 3] = v6;\n this.uint16[o2 + 8] = v7;\n this.uint16[o2 + 9] = v8;\n return i;\n }\n}\n\nStructArrayLayout6i1ul2ui20.prototype.bytesPerElement = 20;\nregister('StructArrayLayout6i1ul2ui20', StructArrayLayout6i1ul2ui20);\n\n/**\n * Implementation of the StructArray layout:\n * [0]: Int16[2]\n * [4]: Int16[2]\n * [8]: Int16[2]\n *\n * @private\n */\nclass StructArrayLayout2i2i2i12 extends StructArray {\n uint8: Uint8Array;\n int16: Int16Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.int16 = new Int16Array(this.arrayBuffer);\n }\n\n emplaceBack(v0: number, v1: number, v2: number, v3: number, v4: number, v5: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1, v2, v3, v4, v5);\n }\n\n emplace(i: number, v0: number, v1: number, v2: number, v3: number, v4: number, v5: number) {\n const o2 = i * 6;\n this.int16[o2 + 0] = v0;\n this.int16[o2 + 1] = v1;\n this.int16[o2 + 2] = v2;\n this.int16[o2 + 3] = v3;\n this.int16[o2 + 4] = v4;\n this.int16[o2 + 5] = v5;\n return i;\n }\n}\n\nStructArrayLayout2i2i2i12.prototype.bytesPerElement = 12;\nregister('StructArrayLayout2i2i2i12', StructArrayLayout2i2i2i12);\n\n/**\n * Implementation of the StructArray layout:\n * [0]: Float32[2]\n * [8]: Float32[1]\n * [12]: Int16[2]\n *\n * @private\n */\nclass StructArrayLayout2f1f2i16 extends StructArray {\n uint8: Uint8Array;\n float32: Float32Array;\n int16: Int16Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.float32 = new Float32Array(this.arrayBuffer);\n this.int16 = new Int16Array(this.arrayBuffer);\n }\n\n emplaceBack(v0: number, v1: number, v2: number, v3: number, v4: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1, v2, v3, v4);\n }\n\n emplace(i: number, v0: number, v1: number, v2: number, v3: number, v4: number) {\n const o4 = i * 4;\n const o2 = i * 8;\n this.float32[o4 + 0] = v0;\n this.float32[o4 + 1] = v1;\n this.float32[o4 + 2] = v2;\n this.int16[o2 + 6] = v3;\n this.int16[o2 + 7] = v4;\n return i;\n }\n}\n\nStructArrayLayout2f1f2i16.prototype.bytesPerElement = 16;\nregister('StructArrayLayout2f1f2i16', StructArrayLayout2f1f2i16);\n\n/**\n * Implementation of the StructArray layout:\n * [0]: Uint8[2]\n * [4]: Float32[2]\n *\n * @private\n */\nclass StructArrayLayout2ub2f12 extends StructArray {\n uint8: Uint8Array;\n float32: Float32Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.float32 = new Float32Array(this.arrayBuffer);\n }\n\n emplaceBack(v0: number, v1: number, v2: number, v3: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1, v2, v3);\n }\n\n emplace(i: number, v0: number, v1: number, v2: number, v3: number) {\n const o1 = i * 12;\n const o4 = i * 3;\n this.uint8[o1 + 0] = v0;\n this.uint8[o1 + 1] = v1;\n this.float32[o4 + 1] = v2;\n this.float32[o4 + 2] = v3;\n return i;\n }\n}\n\nStructArrayLayout2ub2f12.prototype.bytesPerElement = 12;\nregister('StructArrayLayout2ub2f12', StructArrayLayout2ub2f12);\n\n/**\n * Implementation of the StructArray layout:\n * [0]: Uint16[3]\n *\n * @private\n */\nclass StructArrayLayout3ui6 extends StructArray {\n uint8: Uint8Array;\n uint16: Uint16Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.uint16 = new Uint16Array(this.arrayBuffer);\n }\n\n emplaceBack(v0: number, v1: number, v2: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1, v2);\n }\n\n emplace(i: number, v0: number, v1: number, v2: number) {\n const o2 = i * 3;\n this.uint16[o2 + 0] = v0;\n this.uint16[o2 + 1] = v1;\n this.uint16[o2 + 2] = v2;\n return i;\n }\n}\n\nStructArrayLayout3ui6.prototype.bytesPerElement = 6;\nregister('StructArrayLayout3ui6', StructArrayLayout3ui6);\n\n/**\n * Implementation of the StructArray layout:\n * [0]: Int16[2]\n * [4]: Uint16[2]\n * [8]: Uint32[3]\n * [20]: Uint16[3]\n * [28]: Float32[2]\n * [36]: Uint8[3]\n * [40]: Uint32[1]\n * [44]: Int16[1]\n *\n * @private\n */\nclass StructArrayLayout2i2ui3ul3ui2f3ub1ul1i48 extends StructArray {\n uint8: Uint8Array;\n int16: Int16Array;\n uint16: Uint16Array;\n uint32: Uint32Array;\n float32: Float32Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.int16 = new Int16Array(this.arrayBuffer);\n this.uint16 = new Uint16Array(this.arrayBuffer);\n this.uint32 = new Uint32Array(this.arrayBuffer);\n this.float32 = new Float32Array(this.arrayBuffer);\n }\n\n emplaceBack(v0: number, v1: number, v2: number, v3: number, v4: number, v5: number, v6: number, v7: number, v8: number, v9: number, v10: number, v11: number, v12: number, v13: number, v14: number, v15: number, v16: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16);\n }\n\n emplace(i: number, v0: number, v1: number, v2: number, v3: number, v4: number, v5: number, v6: number, v7: number, v8: number, v9: number, v10: number, v11: number, v12: number, v13: number, v14: number, v15: number, v16: number) {\n const o2 = i * 24;\n const o4 = i * 12;\n const o1 = i * 48;\n this.int16[o2 + 0] = v0;\n this.int16[o2 + 1] = v1;\n this.uint16[o2 + 2] = v2;\n this.uint16[o2 + 3] = v3;\n this.uint32[o4 + 2] = v4;\n this.uint32[o4 + 3] = v5;\n this.uint32[o4 + 4] = v6;\n this.uint16[o2 + 10] = v7;\n this.uint16[o2 + 11] = v8;\n this.uint16[o2 + 12] = v9;\n this.float32[o4 + 7] = v10;\n this.float32[o4 + 8] = v11;\n this.uint8[o1 + 36] = v12;\n this.uint8[o1 + 37] = v13;\n this.uint8[o1 + 38] = v14;\n this.uint32[o4 + 10] = v15;\n this.int16[o2 + 22] = v16;\n return i;\n }\n}\n\nStructArrayLayout2i2ui3ul3ui2f3ub1ul1i48.prototype.bytesPerElement = 48;\nregister('StructArrayLayout2i2ui3ul3ui2f3ub1ul1i48', StructArrayLayout2i2ui3ul3ui2f3ub1ul1i48);\n\n/**\n * Implementation of the StructArray layout:\n * [0]: Int16[8]\n * [16]: Uint16[15]\n * [48]: Uint32[1]\n * [52]: Float32[4]\n *\n * @private\n */\nclass StructArrayLayout8i15ui1ul4f68 extends StructArray {\n uint8: Uint8Array;\n int16: Int16Array;\n uint16: Uint16Array;\n uint32: Uint32Array;\n float32: Float32Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.int16 = new Int16Array(this.arrayBuffer);\n this.uint16 = new Uint16Array(this.arrayBuffer);\n this.uint32 = new Uint32Array(this.arrayBuffer);\n this.float32 = new Float32Array(this.arrayBuffer);\n }\n\n emplaceBack(v0: number, v1: number, v2: number, v3: number, v4: number, v5: number, v6: number, v7: number, v8: number, v9: number, v10: number, v11: number, v12: number, v13: number, v14: number, v15: number, v16: number, v17: number, v18: number, v19: number, v20: number, v21: number, v22: number, v23: number, v24: number, v25: number, v26: number, v27: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27);\n }\n\n emplace(i: number, v0: number, v1: number, v2: number, v3: number, v4: number, v5: number, v6: number, v7: number, v8: number, v9: number, v10: number, v11: number, v12: number, v13: number, v14: number, v15: number, v16: number, v17: number, v18: number, v19: number, v20: number, v21: number, v22: number, v23: number, v24: number, v25: number, v26: number, v27: number) {\n const o2 = i * 34;\n const o4 = i * 17;\n this.int16[o2 + 0] = v0;\n this.int16[o2 + 1] = v1;\n this.int16[o2 + 2] = v2;\n this.int16[o2 + 3] = v3;\n this.int16[o2 + 4] = v4;\n this.int16[o2 + 5] = v5;\n this.int16[o2 + 6] = v6;\n this.int16[o2 + 7] = v7;\n this.uint16[o2 + 8] = v8;\n this.uint16[o2 + 9] = v9;\n this.uint16[o2 + 10] = v10;\n this.uint16[o2 + 11] = v11;\n this.uint16[o2 + 12] = v12;\n this.uint16[o2 + 13] = v13;\n this.uint16[o2 + 14] = v14;\n this.uint16[o2 + 15] = v15;\n this.uint16[o2 + 16] = v16;\n this.uint16[o2 + 17] = v17;\n this.uint16[o2 + 18] = v18;\n this.uint16[o2 + 19] = v19;\n this.uint16[o2 + 20] = v20;\n this.uint16[o2 + 21] = v21;\n this.uint16[o2 + 22] = v22;\n this.uint32[o4 + 12] = v23;\n this.float32[o4 + 13] = v24;\n this.float32[o4 + 14] = v25;\n this.float32[o4 + 15] = v26;\n this.float32[o4 + 16] = v27;\n return i;\n }\n}\n\nStructArrayLayout8i15ui1ul4f68.prototype.bytesPerElement = 68;\nregister('StructArrayLayout8i15ui1ul4f68', StructArrayLayout8i15ui1ul4f68);\n\n/**\n * Implementation of the StructArray layout:\n * [0]: Float32[1]\n *\n * @private\n */\nclass StructArrayLayout1f4 extends StructArray {\n uint8: Uint8Array;\n float32: Float32Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.float32 = new Float32Array(this.arrayBuffer);\n }\n\n emplaceBack(v0: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0);\n }\n\n emplace(i: number, v0: number) {\n const o4 = i * 1;\n this.float32[o4 + 0] = v0;\n return i;\n }\n}\n\nStructArrayLayout1f4.prototype.bytesPerElement = 4;\nregister('StructArrayLayout1f4', StructArrayLayout1f4);\n\n/**\n * Implementation of the StructArray layout:\n * [0]: Int16[3]\n *\n * @private\n */\nclass StructArrayLayout3i6 extends StructArray {\n uint8: Uint8Array;\n int16: Int16Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.int16 = new Int16Array(this.arrayBuffer);\n }\n\n emplaceBack(v0: number, v1: number, v2: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1, v2);\n }\n\n emplace(i: number, v0: number, v1: number, v2: number) {\n const o2 = i * 3;\n this.int16[o2 + 0] = v0;\n this.int16[o2 + 1] = v1;\n this.int16[o2 + 2] = v2;\n return i;\n }\n}\n\nStructArrayLayout3i6.prototype.bytesPerElement = 6;\nregister('StructArrayLayout3i6', StructArrayLayout3i6);\n\n/**\n * Implementation of the StructArray layout:\n * [0]: Uint32[1]\n * [4]: Uint16[2]\n *\n * @private\n */\nclass StructArrayLayout1ul2ui8 extends StructArray {\n uint8: Uint8Array;\n uint32: Uint32Array;\n uint16: Uint16Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.uint32 = new Uint32Array(this.arrayBuffer);\n this.uint16 = new Uint16Array(this.arrayBuffer);\n }\n\n emplaceBack(v0: number, v1: number, v2: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1, v2);\n }\n\n emplace(i: number, v0: number, v1: number, v2: number) {\n const o4 = i * 2;\n const o2 = i * 4;\n this.uint32[o4 + 0] = v0;\n this.uint16[o2 + 2] = v1;\n this.uint16[o2 + 3] = v2;\n return i;\n }\n}\n\nStructArrayLayout1ul2ui8.prototype.bytesPerElement = 8;\nregister('StructArrayLayout1ul2ui8', StructArrayLayout1ul2ui8);\n\n/**\n * Implementation of the StructArray layout:\n * [0]: Uint16[2]\n *\n * @private\n */\nclass StructArrayLayout2ui4 extends StructArray {\n uint8: Uint8Array;\n uint16: Uint16Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.uint16 = new Uint16Array(this.arrayBuffer);\n }\n\n emplaceBack(v0: number, v1: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1);\n }\n\n emplace(i: number, v0: number, v1: number) {\n const o2 = i * 2;\n this.uint16[o2 + 0] = v0;\n this.uint16[o2 + 1] = v1;\n return i;\n }\n}\n\nStructArrayLayout2ui4.prototype.bytesPerElement = 4;\nregister('StructArrayLayout2ui4', StructArrayLayout2ui4);\n\n/**\n * Implementation of the StructArray layout:\n * [0]: Uint16[1]\n *\n * @private\n */\nclass StructArrayLayout1ui2 extends StructArray {\n uint8: Uint8Array;\n uint16: Uint16Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.uint16 = new Uint16Array(this.arrayBuffer);\n }\n\n emplaceBack(v0: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0);\n }\n\n emplace(i: number, v0: number) {\n const o2 = i * 1;\n this.uint16[o2 + 0] = v0;\n return i;\n }\n}\n\nStructArrayLayout1ui2.prototype.bytesPerElement = 2;\nregister('StructArrayLayout1ui2', StructArrayLayout1ui2);\n\n/**\n * Implementation of the StructArray layout:\n * [0]: Float32[4]\n *\n * @private\n */\nclass StructArrayLayout4f16 extends StructArray {\n uint8: Uint8Array;\n float32: Float32Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.float32 = new Float32Array(this.arrayBuffer);\n }\n\n emplaceBack(v0: number, v1: number, v2: number, v3: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1, v2, v3);\n }\n\n emplace(i: number, v0: number, v1: number, v2: number, v3: number) {\n const o4 = i * 4;\n this.float32[o4 + 0] = v0;\n this.float32[o4 + 1] = v1;\n this.float32[o4 + 2] = v2;\n this.float32[o4 + 3] = v3;\n return i;\n }\n}\n\nStructArrayLayout4f16.prototype.bytesPerElement = 16;\nregister('StructArrayLayout4f16', StructArrayLayout4f16);\n\nclass CollisionBoxStruct extends Struct {\n _structArray: CollisionBoxArray;\n anchorPointX: number;\n anchorPointY: number;\n x1: number;\n y1: number;\n x2: number;\n y2: number;\n featureIndex: number;\n sourceLayerIndex: number;\n bucketIndex: number;\n anchorPoint: Point;\n get anchorPointX() { return this._structArray.int16[this._pos2 + 0]; }\n get anchorPointY() { return this._structArray.int16[this._pos2 + 1]; }\n get x1() { return this._structArray.int16[this._pos2 + 2]; }\n get y1() { return this._structArray.int16[this._pos2 + 3]; }\n get x2() { return this._structArray.int16[this._pos2 + 4]; }\n get y2() { return this._structArray.int16[this._pos2 + 5]; }\n get featureIndex() { return this._structArray.uint32[this._pos4 + 3]; }\n get sourceLayerIndex() { return this._structArray.uint16[this._pos2 + 8]; }\n get bucketIndex() { return this._structArray.uint16[this._pos2 + 9]; }\n get anchorPoint() { return new Point(this.anchorPointX, this.anchorPointY); }\n}\n\nCollisionBoxStruct.prototype.size = 20;\n\nexport type CollisionBox = CollisionBoxStruct;\n\n/**\n * @private\n */\nexport class CollisionBoxArray extends StructArrayLayout6i1ul2ui20 {\n /**\n * Return the CollisionBoxStruct at the given location in the array.\n * @param {number} index The index of the element.\n * @private\n */\n get(index: number): CollisionBoxStruct {\n assert(!this.isTransferred);\n return new CollisionBoxStruct(this, index);\n }\n}\n\nregister('CollisionBoxArray', CollisionBoxArray);\n\nclass PlacedSymbolStruct extends Struct {\n _structArray: PlacedSymbolArray;\n anchorX: number;\n anchorY: number;\n glyphStartIndex: number;\n numGlyphs: number;\n vertexStartIndex: number;\n lineStartIndex: number;\n lineLength: number;\n segment: number;\n lowerSize: number;\n upperSize: number;\n lineOffsetX: number;\n lineOffsetY: number;\n writingMode: number;\n placedOrientation: number;\n hidden: number;\n crossTileID: number;\n associatedIconIndex: number;\n get anchorX() { return this._structArray.int16[this._pos2 + 0]; }\n get anchorY() { return this._structArray.int16[this._pos2 + 1]; }\n get glyphStartIndex() { return this._structArray.uint16[this._pos2 + 2]; }\n get numGlyphs() { return this._structArray.uint16[this._pos2 + 3]; }\n get vertexStartIndex() { return this._structArray.uint32[this._pos4 + 2]; }\n get lineStartIndex() { return this._structArray.uint32[this._pos4 + 3]; }\n get lineLength() { return this._structArray.uint32[this._pos4 + 4]; }\n get segment() { return this._structArray.uint16[this._pos2 + 10]; }\n get lowerSize() { return this._structArray.uint16[this._pos2 + 11]; }\n get upperSize() { return this._structArray.uint16[this._pos2 + 12]; }\n get lineOffsetX() { return this._structArray.float32[this._pos4 + 7]; }\n get lineOffsetY() { return this._structArray.float32[this._pos4 + 8]; }\n get writingMode() { return this._structArray.uint8[this._pos1 + 36]; }\n get placedOrientation() { return this._structArray.uint8[this._pos1 + 37]; }\n set placedOrientation(x: number) { this._structArray.uint8[this._pos1 + 37] = x; }\n get hidden() { return this._structArray.uint8[this._pos1 + 38]; }\n set hidden(x: number) { this._structArray.uint8[this._pos1 + 38] = x; }\n get crossTileID() { return this._structArray.uint32[this._pos4 + 10]; }\n set crossTileID(x: number) { this._structArray.uint32[this._pos4 + 10] = x; }\n get associatedIconIndex() { return this._structArray.int16[this._pos2 + 22]; }\n}\n\nPlacedSymbolStruct.prototype.size = 48;\n\nexport type PlacedSymbol = PlacedSymbolStruct;\n\n/**\n * @private\n */\nexport class PlacedSymbolArray extends StructArrayLayout2i2ui3ul3ui2f3ub1ul1i48 {\n /**\n * Return the PlacedSymbolStruct at the given location in the array.\n * @param {number} index The index of the element.\n * @private\n */\n get(index: number): PlacedSymbolStruct {\n assert(!this.isTransferred);\n return new PlacedSymbolStruct(this, index);\n }\n}\n\nregister('PlacedSymbolArray', PlacedSymbolArray);\n\nclass SymbolInstanceStruct extends Struct {\n _structArray: SymbolInstanceArray;\n anchorX: number;\n anchorY: number;\n rightJustifiedTextSymbolIndex: number;\n centerJustifiedTextSymbolIndex: number;\n leftJustifiedTextSymbolIndex: number;\n verticalPlacedTextSymbolIndex: number;\n placedIconSymbolIndex: number;\n verticalPlacedIconSymbolIndex: number;\n key: number;\n textBoxStartIndex: number;\n textBoxEndIndex: number;\n verticalTextBoxStartIndex: number;\n verticalTextBoxEndIndex: number;\n iconBoxStartIndex: number;\n iconBoxEndIndex: number;\n verticalIconBoxStartIndex: number;\n verticalIconBoxEndIndex: number;\n featureIndex: number;\n numHorizontalGlyphVertices: number;\n numVerticalGlyphVertices: number;\n numIconVertices: number;\n numVerticalIconVertices: number;\n useRuntimeCollisionCircles: number;\n crossTileID: number;\n textBoxScale: number;\n textOffset0: number;\n textOffset1: number;\n collisionCircleDiameter: number;\n get anchorX() { return this._structArray.int16[this._pos2 + 0]; }\n get anchorY() { return this._structArray.int16[this._pos2 + 1]; }\n get rightJustifiedTextSymbolIndex() { return this._structArray.int16[this._pos2 + 2]; }\n get centerJustifiedTextSymbolIndex() { return this._structArray.int16[this._pos2 + 3]; }\n get leftJustifiedTextSymbolIndex() { return this._structArray.int16[this._pos2 + 4]; }\n get verticalPlacedTextSymbolIndex() { return this._structArray.int16[this._pos2 + 5]; }\n get placedIconSymbolIndex() { return this._structArray.int16[this._pos2 + 6]; }\n get verticalPlacedIconSymbolIndex() { return this._structArray.int16[this._pos2 + 7]; }\n get key() { return this._structArray.uint16[this._pos2 + 8]; }\n get textBoxStartIndex() { return this._structArray.uint16[this._pos2 + 9]; }\n get textBoxEndIndex() { return this._structArray.uint16[this._pos2 + 10]; }\n get verticalTextBoxStartIndex() { return this._structArray.uint16[this._pos2 + 11]; }\n get verticalTextBoxEndIndex() { return this._structArray.uint16[this._pos2 + 12]; }\n get iconBoxStartIndex() { return this._structArray.uint16[this._pos2 + 13]; }\n get iconBoxEndIndex() { return this._structArray.uint16[this._pos2 + 14]; }\n get verticalIconBoxStartIndex() { return this._structArray.uint16[this._pos2 + 15]; }\n get verticalIconBoxEndIndex() { return this._structArray.uint16[this._pos2 + 16]; }\n get featureIndex() { return this._structArray.uint16[this._pos2 + 17]; }\n get numHorizontalGlyphVertices() { return this._structArray.uint16[this._pos2 + 18]; }\n get numVerticalGlyphVertices() { return this._structArray.uint16[this._pos2 + 19]; }\n get numIconVertices() { return this._structArray.uint16[this._pos2 + 20]; }\n get numVerticalIconVertices() { return this._structArray.uint16[this._pos2 + 21]; }\n get useRuntimeCollisionCircles() { return this._structArray.uint16[this._pos2 + 22]; }\n get crossTileID() { return this._structArray.uint32[this._pos4 + 12]; }\n set crossTileID(x: number) { this._structArray.uint32[this._pos4 + 12] = x; }\n get textBoxScale() { return this._structArray.float32[this._pos4 + 13]; }\n get textOffset0() { return this._structArray.float32[this._pos4 + 14]; }\n get textOffset1() { return this._structArray.float32[this._pos4 + 15]; }\n get collisionCircleDiameter() { return this._structArray.float32[this._pos4 + 16]; }\n}\n\nSymbolInstanceStruct.prototype.size = 68;\n\nexport type SymbolInstance = SymbolInstanceStruct;\n\n/**\n * @private\n */\nexport class SymbolInstanceArray extends StructArrayLayout8i15ui1ul4f68 {\n /**\n * Return the SymbolInstanceStruct at the given location in the array.\n * @param {number} index The index of the element.\n * @private\n */\n get(index: number): SymbolInstanceStruct {\n assert(!this.isTransferred);\n return new SymbolInstanceStruct(this, index);\n }\n}\n\nregister('SymbolInstanceArray', SymbolInstanceArray);\n\n/**\n * @private\n */\nexport class GlyphOffsetArray extends StructArrayLayout1f4 {\n getoffsetX(index: number) { return this.float32[index * 1 + 0]; }\n}\n\nregister('GlyphOffsetArray', GlyphOffsetArray);\n\n/**\n * @private\n */\nexport class SymbolLineVertexArray extends StructArrayLayout3i6 {\n getx(index: number) { return this.int16[index * 3 + 0]; }\n gety(index: number) { return this.int16[index * 3 + 1]; }\n gettileUnitDistanceFromAnchor(index: number) { return this.int16[index * 3 + 2]; }\n}\n\nregister('SymbolLineVertexArray', SymbolLineVertexArray);\n\nclass FeatureIndexStruct extends Struct {\n _structArray: FeatureIndexArray;\n featureIndex: number;\n sourceLayerIndex: number;\n bucketIndex: number;\n get featureIndex() { return this._structArray.uint32[this._pos4 + 0]; }\n get sourceLayerIndex() { return this._structArray.uint16[this._pos2 + 2]; }\n get bucketIndex() { return this._structArray.uint16[this._pos2 + 3]; }\n}\n\nFeatureIndexStruct.prototype.size = 8;\n\nexport type FeatureIndex = FeatureIndexStruct;\n\n/**\n * @private\n */\nexport class FeatureIndexArray extends StructArrayLayout1ul2ui8 {\n /**\n * Return the FeatureIndexStruct at the given location in the array.\n * @param {number} index The index of the element.\n * @private\n */\n get(index: number): FeatureIndexStruct {\n assert(!this.isTransferred);\n return new FeatureIndexStruct(this, index);\n }\n}\n\nregister('FeatureIndexArray', FeatureIndexArray);\n\nexport {\n StructArrayLayout2i4,\n StructArrayLayout4i8,\n StructArrayLayout2i4i12,\n StructArrayLayout2i4ub8,\n StructArrayLayout2f8,\n StructArrayLayout10ui20,\n StructArrayLayout4i4ui4i24,\n StructArrayLayout3f12,\n StructArrayLayout1ul4,\n StructArrayLayout6i1ul2ui20,\n StructArrayLayout2i2i2i12,\n StructArrayLayout2f1f2i16,\n StructArrayLayout2ub2f12,\n StructArrayLayout3ui6,\n StructArrayLayout2i2ui3ul3ui2f3ub1ul1i48,\n StructArrayLayout8i15ui1ul4f68,\n StructArrayLayout1f4,\n StructArrayLayout3i6,\n StructArrayLayout1ul2ui8,\n StructArrayLayout2ui4,\n StructArrayLayout1ui2,\n StructArrayLayout4f16,\n StructArrayLayout2i4 as PosArray,\n StructArrayLayout4i8 as RasterBoundsArray,\n StructArrayLayout2i4 as CircleLayoutArray,\n StructArrayLayout2i4 as FillLayoutArray,\n StructArrayLayout2i4i12 as FillExtrusionLayoutArray,\n StructArrayLayout2i4 as HeatmapLayoutArray,\n StructArrayLayout2i4ub8 as LineLayoutArray,\n StructArrayLayout2f8 as LineExtLayoutArray,\n StructArrayLayout10ui20 as PatternLayoutArray,\n StructArrayLayout4i4ui4i24 as SymbolLayoutArray,\n StructArrayLayout3f12 as SymbolDynamicLayoutArray,\n StructArrayLayout1ul4 as SymbolOpacityArray,\n StructArrayLayout2i2i2i12 as CollisionBoxLayoutArray,\n StructArrayLayout2f1f2i16 as CollisionCircleLayoutArray,\n StructArrayLayout2ub2f12 as CollisionVertexArray,\n StructArrayLayout3ui6 as QuadTriangleArray,\n StructArrayLayout3ui6 as TriangleIndexArray,\n StructArrayLayout2ui4 as LineIndexArray,\n StructArrayLayout1ui2 as LineStripIndexArray\n};\n", "// @flow\nimport {createLayout} from '../../util/struct_array';\n\nconst layout = createLayout([\n {name: 'a_pos', components: 2, type: 'Int16'}\n], 4);\n\nexport default layout;\nexport const {members, size, alignment} = layout;\n", "// @flow\n\nimport {warnOnce} from '../util/util';\n\nimport {register} from '../util/web_worker_transfer';\n\nimport type VertexArrayObject from '../render/vertex_array_object';\nimport type {StructArray} from '../util/struct_array';\n\nexport type Segment = {\n sortKey: number | void,\n vertexOffset: number,\n primitiveOffset: number,\n vertexLength: number,\n primitiveLength: number,\n vaos: {[_: string]: VertexArrayObject}\n}\n\nclass SegmentVector {\n static MAX_VERTEX_ARRAY_LENGTH: number;\n segments: Array;\n\n constructor(segments?: Array = []) {\n this.segments = segments;\n }\n\n prepareSegment(numVertices: number, layoutVertexArray: StructArray, indexArray: StructArray, sortKey?: number): Segment {\n let segment: Segment = this.segments[this.segments.length - 1];\n if (numVertices > SegmentVector.MAX_VERTEX_ARRAY_LENGTH) warnOnce(`Max vertices per segment is ${SegmentVector.MAX_VERTEX_ARRAY_LENGTH}: bucket requested ${numVertices}`);\n if (!segment || segment.vertexLength + numVertices > SegmentVector.MAX_VERTEX_ARRAY_LENGTH || segment.sortKey !== sortKey) {\n segment = ({\n vertexOffset: layoutVertexArray.length,\n primitiveOffset: indexArray.length,\n vertexLength: 0,\n primitiveLength: 0\n }: any);\n if (sortKey !== undefined) segment.sortKey = sortKey;\n this.segments.push(segment);\n }\n return segment;\n }\n\n get() {\n return this.segments;\n }\n\n destroy() {\n for (const segment of this.segments) {\n for (const k in segment.vaos) {\n segment.vaos[k].destroy();\n }\n }\n }\n\n static simpleSegment(vertexOffset: number, primitiveOffset: number, vertexLength: number, primitiveLength: number): SegmentVector {\n return new SegmentVector([{\n vertexOffset,\n primitiveOffset,\n vertexLength,\n primitiveLength,\n vaos: {},\n sortKey: 0\n }]);\n }\n}\n\n/*\n * The maximum size of a vertex array. This limit is imposed by WebGL's 16 bit\n * addressing of vertex buffers.\n * @private\n * @readonly\n */\nSegmentVector.MAX_VERTEX_ARRAY_LENGTH = Math.pow(2, 16) - 1;\n\nregister('SegmentVector', SegmentVector);\nexport default SegmentVector;\n", "// @flow\n\nimport {clamp} from '../util/util';\n\n/**\n * Packs two numbers, interpreted as 8-bit unsigned integers, into a single\n * float. Unpack them in the shader using the `unpack_float()` function,\n * defined in _prelude.vertex.glsl\n *\n * @private\n */\nexport function packUint8ToFloat(a: number, b: number) {\n // coerce a and b to 8-bit ints\n a = clamp(Math.floor(a), 0, 255);\n b = clamp(Math.floor(b), 0, 255);\n return 256 * a + b;\n}\n", "// @flow\nimport {createLayout} from '../../util/struct_array';\n\nconst patternAttributes = createLayout([\n // [tl.x, tl.y, br.x, br.y]\n {name: 'a_pattern_from', components: 4, type: 'Uint16'},\n {name: 'a_pattern_to', components: 4, type: 'Uint16'},\n {name: 'a_pixel_ratio_from', components: 1, type: 'Uint16'},\n {name: 'a_pixel_ratio_to', components: 1, type: 'Uint16'},\n]);\n\nexport default patternAttributes;\n", "/**\n * JS Implementation of MurmurHash3 (r136) (as of May 20, 2011)\n * \n * @author Gary Court\n * @see http://github.com/garycourt/murmurhash-js\n * @author Austin Appleby\n * @see http://sites.google.com/site/murmurhash/\n * \n * @param {string} key ASCII only\n * @param {number} seed Positive integer only\n * @return {number} 32-bit positive integer hash \n */\n\nfunction murmurhash3_32_gc(key, seed) {\n\tvar remainder, bytes, h1, h1b, c1, c1b, c2, c2b, k1, i;\n\t\n\tremainder = key.length & 3; // key.length % 4\n\tbytes = key.length - remainder;\n\th1 = seed;\n\tc1 = 0xcc9e2d51;\n\tc2 = 0x1b873593;\n\ti = 0;\n\t\n\twhile (i < bytes) {\n\t \tk1 = \n\t \t ((key.charCodeAt(i) & 0xff)) |\n\t \t ((key.charCodeAt(++i) & 0xff) << 8) |\n\t \t ((key.charCodeAt(++i) & 0xff) << 16) |\n\t \t ((key.charCodeAt(++i) & 0xff) << 24);\n\t\t++i;\n\t\t\n\t\tk1 = ((((k1 & 0xffff) * c1) + ((((k1 >>> 16) * c1) & 0xffff) << 16))) & 0xffffffff;\n\t\tk1 = (k1 << 15) | (k1 >>> 17);\n\t\tk1 = ((((k1 & 0xffff) * c2) + ((((k1 >>> 16) * c2) & 0xffff) << 16))) & 0xffffffff;\n\n\t\th1 ^= k1;\n h1 = (h1 << 13) | (h1 >>> 19);\n\t\th1b = ((((h1 & 0xffff) * 5) + ((((h1 >>> 16) * 5) & 0xffff) << 16))) & 0xffffffff;\n\t\th1 = (((h1b & 0xffff) + 0x6b64) + ((((h1b >>> 16) + 0xe654) & 0xffff) << 16));\n\t}\n\t\n\tk1 = 0;\n\t\n\tswitch (remainder) {\n\t\tcase 3: k1 ^= (key.charCodeAt(i + 2) & 0xff) << 16;\n\t\tcase 2: k1 ^= (key.charCodeAt(i + 1) & 0xff) << 8;\n\t\tcase 1: k1 ^= (key.charCodeAt(i) & 0xff);\n\t\t\n\t\tk1 = (((k1 & 0xffff) * c1) + ((((k1 >>> 16) * c1) & 0xffff) << 16)) & 0xffffffff;\n\t\tk1 = (k1 << 15) | (k1 >>> 17);\n\t\tk1 = (((k1 & 0xffff) * c2) + ((((k1 >>> 16) * c2) & 0xffff) << 16)) & 0xffffffff;\n\t\th1 ^= k1;\n\t}\n\t\n\th1 ^= key.length;\n\n\th1 ^= h1 >>> 16;\n\th1 = (((h1 & 0xffff) * 0x85ebca6b) + ((((h1 >>> 16) * 0x85ebca6b) & 0xffff) << 16)) & 0xffffffff;\n\th1 ^= h1 >>> 13;\n\th1 = ((((h1 & 0xffff) * 0xc2b2ae35) + ((((h1 >>> 16) * 0xc2b2ae35) & 0xffff) << 16))) & 0xffffffff;\n\th1 ^= h1 >>> 16;\n\n\treturn h1 >>> 0;\n}\n\nif(typeof module !== \"undefined\") {\n module.exports = murmurhash3_32_gc\n}", "/**\n * JS Implementation of MurmurHash2\n * \n * @author Gary Court\n * @see http://github.com/garycourt/murmurhash-js\n * @author Austin Appleby\n * @see http://sites.google.com/site/murmurhash/\n * \n * @param {string} str ASCII only\n * @param {number} seed Positive integer only\n * @return {number} 32-bit positive integer hash\n */\n\nfunction murmurhash2_32_gc(str, seed) {\n var\n l = str.length,\n h = seed ^ l,\n i = 0,\n k;\n \n while (l >= 4) {\n \tk = \n \t ((str.charCodeAt(i) & 0xff)) |\n \t ((str.charCodeAt(++i) & 0xff) << 8) |\n \t ((str.charCodeAt(++i) & 0xff) << 16) |\n \t ((str.charCodeAt(++i) & 0xff) << 24);\n \n k = (((k & 0xffff) * 0x5bd1e995) + ((((k >>> 16) * 0x5bd1e995) & 0xffff) << 16));\n k ^= k >>> 24;\n k = (((k & 0xffff) * 0x5bd1e995) + ((((k >>> 16) * 0x5bd1e995) & 0xffff) << 16));\n\n\th = (((h & 0xffff) * 0x5bd1e995) + ((((h >>> 16) * 0x5bd1e995) & 0xffff) << 16)) ^ k;\n\n l -= 4;\n ++i;\n }\n \n switch (l) {\n case 3: h ^= (str.charCodeAt(i + 2) & 0xff) << 16;\n case 2: h ^= (str.charCodeAt(i + 1) & 0xff) << 8;\n case 1: h ^= (str.charCodeAt(i) & 0xff);\n h = (((h & 0xffff) * 0x5bd1e995) + ((((h >>> 16) * 0x5bd1e995) & 0xffff) << 16));\n }\n\n h ^= h >>> 13;\n h = (((h & 0xffff) * 0x5bd1e995) + ((((h >>> 16) * 0x5bd1e995) & 0xffff) << 16));\n h ^= h >>> 15;\n\n return h >>> 0;\n}\n\nif(typeof module !== undefined) {\n module.exports = murmurhash2_32_gc\n}\n", "var murmur3 = require(\"./murmurhash3_gc.js\")\nvar murmur2 = require(\"./murmurhash2_gc.js\")\n\nmodule.exports = murmur3\nmodule.exports.murmur3 = murmur3\nmodule.exports.murmur2 = murmur2\n", "// @flow\n\nimport murmur3 from 'murmurhash-js';\nimport {register} from '../util/web_worker_transfer';\nimport assert from 'assert';\n\ntype SerializedFeaturePositionMap = {\n ids: Float64Array;\n positions: Uint32Array;\n};\n\ntype FeaturePosition = {\n index: number;\n start: number;\n end: number;\n};\n\n// A transferable data structure that maps feature ids to their indices and buffer offsets\nexport default class FeaturePositionMap {\n ids: Array;\n positions: Array;\n indexed: boolean;\n\n constructor() {\n this.ids = [];\n this.positions = [];\n this.indexed = false;\n }\n\n add(id: mixed, index: number, start: number, end: number) {\n this.ids.push(getNumericId(id));\n this.positions.push(index, start, end);\n }\n\n getPositions(id: mixed): Array {\n assert(this.indexed);\n\n const intId = getNumericId(id);\n\n // binary search for the first occurrence of id in this.ids;\n // relies on ids/positions being sorted by id, which happens in serialization\n let i = 0;\n let j = this.ids.length - 1;\n while (i < j) {\n const m = (i + j) >> 1;\n if (this.ids[m] >= intId) {\n j = m;\n } else {\n i = m + 1;\n }\n }\n const positions = [];\n while (this.ids[i] === intId) {\n const index = this.positions[3 * i];\n const start = this.positions[3 * i + 1];\n const end = this.positions[3 * i + 2];\n positions.push({index, start, end});\n i++;\n }\n return positions;\n }\n\n static serialize(map: FeaturePositionMap, transferables: Array): SerializedFeaturePositionMap {\n const ids = new Float64Array(map.ids);\n const positions = new Uint32Array(map.positions);\n\n sort(ids, positions, 0, ids.length - 1);\n\n if (transferables) {\n transferables.push(ids.buffer, positions.buffer);\n }\n\n return {ids, positions};\n }\n\n static deserialize(obj: SerializedFeaturePositionMap): FeaturePositionMap {\n const map = new FeaturePositionMap();\n // after transferring, we only use these arrays statically (no pushes),\n // so TypedArray vs Array distinction that flow points out doesn't matter\n map.ids = (obj.ids: any);\n map.positions = (obj.positions: any);\n map.indexed = true;\n return map;\n }\n}\n\nconst MAX_SAFE_INTEGER = Math.pow(2, 53) - 1;\n\nfunction getNumericId(value: mixed) {\n const numValue = +value;\n if (!isNaN(numValue) && numValue <= MAX_SAFE_INTEGER) {\n return numValue;\n }\n return murmur3(String(value));\n}\n\n// custom quicksort that sorts ids, indices and offsets together (by ids)\n// uses Hoare partitioning & manual tail call optimization to avoid worst case scenarios\nfunction sort(ids, positions, left, right) {\n while (left < right) {\n const pivot = ids[(left + right) >> 1];\n let i = left - 1;\n let j = right + 1;\n\n while (true) {\n do i++; while (ids[i] < pivot);\n do j--; while (ids[j] > pivot);\n if (i >= j) break;\n swap(ids, i, j);\n swap(positions, 3 * i, 3 * j);\n swap(positions, 3 * i + 1, 3 * j + 1);\n swap(positions, 3 * i + 2, 3 * j + 2);\n }\n\n if (j - left < right - j) {\n sort(ids, positions, left, j);\n left = j + 1;\n } else {\n sort(ids, positions, j + 1, right);\n right = j;\n }\n }\n}\n\nfunction swap(arr, i, j) {\n const tmp = arr[i];\n arr[i] = arr[j];\n arr[j] = tmp;\n}\n\nregister('FeaturePositionMap', FeaturePositionMap);\n", "// @flow\n\nimport Color from '../style-spec/util/color';\n\nimport type Context from '../gl/context';\n\nexport type UniformValues\n = $Exact<$ObjMap(u: Uniform) => V>>;\nexport type UniformLocations = {[_: string]: WebGLUniformLocation};\n\nclass Uniform {\n gl: WebGLRenderingContext;\n location: ?WebGLUniformLocation;\n current: T;\n\n constructor(context: Context, location: WebGLUniformLocation) {\n this.gl = context.gl;\n this.location = location;\n }\n\n +set: (v: T) => void;\n}\n\nclass Uniform1i extends Uniform {\n constructor(context: Context, location: WebGLUniformLocation) {\n super(context, location);\n this.current = 0;\n }\n\n set(v: number): void {\n if (this.current !== v) {\n this.current = v;\n this.gl.uniform1i(this.location, v);\n }\n }\n}\n\nclass Uniform1f extends Uniform {\n constructor(context: Context, location: WebGLUniformLocation) {\n super(context, location);\n this.current = 0;\n }\n\n set(v: number): void {\n if (this.current !== v) {\n this.current = v;\n this.gl.uniform1f(this.location, v);\n }\n }\n}\n\nclass Uniform2f extends Uniform<[number, number]> {\n constructor(context: Context, location: WebGLUniformLocation) {\n super(context, location);\n this.current = [0, 0];\n }\n\n set(v: [number, number]): void {\n if (v[0] !== this.current[0] || v[1] !== this.current[1]) {\n this.current = v;\n this.gl.uniform2f(this.location, v[0], v[1]);\n }\n }\n}\n\nclass Uniform3f extends Uniform<[number, number, number]> {\n constructor(context: Context, location: WebGLUniformLocation) {\n super(context, location);\n this.current = [0, 0, 0];\n }\n\n set(v: [number, number, number]): void {\n if (v[0] !== this.current[0] || v[1] !== this.current[1] || v[2] !== this.current[2]) {\n this.current = v;\n this.gl.uniform3f(this.location, v[0], v[1], v[2]);\n }\n }\n}\n\nclass Uniform4f extends Uniform<[number, number, number, number]> {\n constructor(context: Context, location: WebGLUniformLocation) {\n super(context, location);\n this.current = [0, 0, 0, 0];\n }\n\n set(v: [number, number, number, number]): void {\n if (v[0] !== this.current[0] || v[1] !== this.current[1] ||\n v[2] !== this.current[2] || v[3] !== this.current[3]) {\n this.current = v;\n this.gl.uniform4f(this.location, v[0], v[1], v[2], v[3]);\n }\n }\n}\n\nclass UniformColor extends Uniform {\n constructor(context: Context, location: WebGLUniformLocation) {\n super(context, location);\n this.current = Color.transparent;\n }\n\n set(v: Color): void {\n if (v.r !== this.current.r || v.g !== this.current.g ||\n v.b !== this.current.b || v.a !== this.current.a) {\n this.current = v;\n this.gl.uniform4f(this.location, v.r, v.g, v.b, v.a);\n }\n }\n}\n\nconst emptyMat4 = new Float32Array(16);\nclass UniformMatrix4f extends Uniform {\n constructor(context: Context, location: WebGLUniformLocation) {\n super(context, location);\n this.current = emptyMat4;\n }\n\n set(v: Float32Array): void {\n // The vast majority of matrix comparisons that will trip this set\n // happen at i=12 or i=0, so we check those first to avoid lots of\n // unnecessary iteration:\n if (v[12] !== this.current[12] || v[0] !== this.current[0]) {\n this.current = v;\n this.gl.uniformMatrix4fv(this.location, false, v);\n return;\n }\n for (let i = 1; i < 16; i++) {\n if (v[i] !== this.current[i]) {\n this.current = v;\n this.gl.uniformMatrix4fv(this.location, false, v);\n break;\n }\n }\n }\n}\n\nexport {\n Uniform,\n Uniform1i,\n Uniform1f,\n Uniform2f,\n Uniform3f,\n Uniform4f,\n UniformColor,\n UniformMatrix4f\n};\n\nexport type UniformBindings = {[_: string]: Uniform};\n", "// @flow\n\nimport {packUint8ToFloat} from '../shaders/encode_attribute';\nimport Color from '../style-spec/util/color';\nimport {supportsPropertyExpression} from '../style-spec/util/properties';\nimport {register} from '../util/web_worker_transfer';\nimport {PossiblyEvaluatedPropertyValue} from '../style/properties';\nimport {StructArrayLayout1f4, StructArrayLayout2f8, StructArrayLayout4f16, PatternLayoutArray} from './array_types';\nimport {clamp} from '../util/util';\nimport patternAttributes from './bucket/pattern_attributes';\nimport EvaluationParameters from '../style/evaluation_parameters';\nimport FeaturePositionMap from './feature_position_map';\nimport {\n Uniform,\n Uniform1f,\n UniformColor,\n Uniform4f,\n type UniformLocations\n} from '../render/uniform_binding';\n\nimport type {CanonicalTileID} from '../source/tile_id';\nimport type Context from '../gl/context';\nimport type {TypedStyleLayer} from '../style/style_layer/typed_style_layer';\nimport type {CrossfadeParameters} from '../style/evaluation_parameters';\nimport type {StructArray, StructArrayMember} from '../util/struct_array';\nimport type VertexBuffer from '../gl/vertex_buffer';\nimport type {ImagePosition} from '../render/image_atlas';\nimport type {\n Feature,\n FeatureState,\n GlobalProperties,\n SourceExpression,\n CompositeExpression\n} from '../style-spec/expression';\nimport type {PossiblyEvaluated} from '../style/properties';\nimport type {FeatureStates} from '../source/source_state';\nimport type {FormattedSection} from '../style-spec/expression/types/formatted';\n\nexport type BinderUniform = {\n name: string,\n property: string,\n binding: Uniform\n};\n\nfunction packColor(color: Color): [number, number] {\n return [\n packUint8ToFloat(255 * color.r, 255 * color.g),\n packUint8ToFloat(255 * color.b, 255 * color.a)\n ];\n}\n\n/**\n * `Binder` is the interface definition for the strategies for constructing,\n * uploading, and binding paint property data as GLSL attributes. Most style-\n * spec properties have a 1:1 relationship to shader attribute/uniforms, but\n * some require multliple values per feature to be passed to the GPU, and in\n * those cases we bind multiple attributes/uniforms.\n *\n * It has three implementations, one for each of the three strategies we use:\n *\n * * For _constant_ properties -- those whose value is a constant, or the constant\n * result of evaluating a camera expression at a particular camera position -- we\n * don't need a vertex attribute buffer, and instead use a uniform.\n * * For data expressions, we use a vertex buffer with a single attribute value,\n * the evaluated result of the source function for the given feature.\n * * For composite expressions, we use a vertex buffer with two attributes: min and\n * max values covering the range of zooms at which we expect the tile to be\n * displayed. These values are calculated by evaluating the composite expression for\n * the given feature at strategically chosen zoom levels. In addition to this\n * attribute data, we also use a uniform value which the shader uses to interpolate\n * between the min and max value at the final displayed zoom level. The use of a\n * uniform allows us to cheaply update the value on every frame.\n *\n * Note that the shader source varies depending on whether we're using a uniform or\n * attribute. We dynamically compile shaders at runtime to accomodate this.\n *\n * @private\n */\n\ninterface AttributeBinder {\n populatePaintArray(length: number, feature: Feature, imagePositions: {[_: string]: ImagePosition}, canonical?: CanonicalTileID, formattedSection?: FormattedSection): void;\n updatePaintArray(start: number, length: number, feature: Feature, featureState: FeatureState, imagePositions: {[_: string]: ImagePosition}): void;\n upload(Context): void;\n destroy(): void;\n}\n\ninterface UniformBinder {\n uniformNames: Array;\n setUniform(uniform: Uniform<*>, globals: GlobalProperties, currentValue: PossiblyEvaluatedPropertyValue<*>, uniformName: string): void;\n getBinding(context: Context, location: WebGLUniformLocation, name: string): $Shape>;\n}\n\nclass ConstantBinder implements UniformBinder {\n value: mixed;\n type: string;\n uniformNames: Array;\n\n constructor(value: mixed, names: Array, type: string) {\n this.value = value;\n this.uniformNames = names.map(name => `u_${name}`);\n this.type = type;\n }\n\n setUniform(uniform: Uniform<*>, globals: GlobalProperties, currentValue: PossiblyEvaluatedPropertyValue): void {\n uniform.set(currentValue.constantOr(this.value));\n }\n\n getBinding(context: Context, location: WebGLUniformLocation, _: string): $Shape> {\n return (this.type === 'color') ?\n new UniformColor(context, location) :\n new Uniform1f(context, location);\n }\n}\n\nclass CrossFadedConstantBinder implements UniformBinder {\n uniformNames: Array;\n patternFrom: ?Array;\n patternTo: ?Array;\n pixelRatioFrom: number;\n pixelRatioTo: number;\n\n constructor(value: mixed, names: Array) {\n this.uniformNames = names.map(name => `u_${name}`);\n this.patternFrom = null;\n this.patternTo = null;\n this.pixelRatioFrom = 1.0;\n this.pixelRatioTo = 1.0;\n }\n\n setConstantPatternPositions(posTo: ImagePosition, posFrom: ImagePosition) {\n this.pixelRatioFrom = posFrom.pixelRatio;\n this.pixelRatioTo = posTo.pixelRatio;\n this.patternFrom = posFrom.tlbr;\n this.patternTo = posTo.tlbr;\n }\n\n setUniform(uniform: Uniform<*>, globals: GlobalProperties, currentValue: PossiblyEvaluatedPropertyValue, uniformName: string) {\n const pos =\n uniformName === 'u_pattern_to' ? this.patternTo :\n uniformName === 'u_pattern_from' ? this.patternFrom :\n uniformName === 'u_pixel_ratio_to' ? this.pixelRatioTo :\n uniformName === 'u_pixel_ratio_from' ? this.pixelRatioFrom : null;\n if (pos) uniform.set(pos);\n }\n\n getBinding(context: Context, location: WebGLUniformLocation, name: string): $Shape> {\n return name.substr(0, 9) === 'u_pattern' ?\n new Uniform4f(context, location) :\n new Uniform1f(context, location);\n }\n}\n\nclass SourceExpressionBinder implements AttributeBinder {\n expression: SourceExpression;\n type: string;\n maxValue: number;\n\n paintVertexArray: StructArray;\n paintVertexAttributes: Array;\n paintVertexBuffer: ?VertexBuffer;\n\n constructor(expression: SourceExpression, names: Array, type: string, PaintVertexArray: Class) {\n this.expression = expression;\n this.type = type;\n this.maxValue = 0;\n this.paintVertexAttributes = names.map((name) => ({\n name: `a_${name}`,\n type: 'Float32',\n components: type === 'color' ? 2 : 1,\n offset: 0\n }));\n this.paintVertexArray = new PaintVertexArray();\n }\n\n populatePaintArray(newLength: number, feature: Feature, imagePositions: {[_: string]: ImagePosition}, canonical?: CanonicalTileID, formattedSection?: FormattedSection) {\n const start = this.paintVertexArray.length;\n const value = this.expression.evaluate(new EvaluationParameters(0), feature, {}, canonical, [], formattedSection);\n this.paintVertexArray.resize(newLength);\n this._setPaintValue(start, newLength, value);\n }\n\n updatePaintArray(start: number, end: number, feature: Feature, featureState: FeatureState) {\n const value = this.expression.evaluate({zoom: 0}, feature, featureState);\n this._setPaintValue(start, end, value);\n }\n\n _setPaintValue(start, end, value) {\n if (this.type === 'color') {\n const color = packColor(value);\n for (let i = start; i < end; i++) {\n this.paintVertexArray.emplace(i, color[0], color[1]);\n }\n } else {\n for (let i = start; i < end; i++) {\n this.paintVertexArray.emplace(i, value);\n }\n this.maxValue = Math.max(this.maxValue, Math.abs(value));\n }\n }\n\n upload(context: Context) {\n if (this.paintVertexArray && this.paintVertexArray.arrayBuffer) {\n if (this.paintVertexBuffer && this.paintVertexBuffer.buffer) {\n this.paintVertexBuffer.updateData(this.paintVertexArray);\n } else {\n this.paintVertexBuffer = context.createVertexBuffer(this.paintVertexArray, this.paintVertexAttributes, this.expression.isStateDependent);\n }\n }\n }\n\n destroy() {\n if (this.paintVertexBuffer) {\n this.paintVertexBuffer.destroy();\n }\n }\n}\n\nclass CompositeExpressionBinder implements AttributeBinder, UniformBinder {\n expression: CompositeExpression;\n uniformNames: Array;\n type: string;\n useIntegerZoom: boolean;\n zoom: number;\n maxValue: number;\n\n paintVertexArray: StructArray;\n paintVertexAttributes: Array;\n paintVertexBuffer: ?VertexBuffer;\n\n constructor(expression: CompositeExpression, names: Array, type: string, useIntegerZoom: boolean, zoom: number, PaintVertexArray: Class) {\n this.expression = expression;\n this.uniformNames = names.map(name => `u_${name}_t`);\n this.type = type;\n this.useIntegerZoom = useIntegerZoom;\n this.zoom = zoom;\n this.maxValue = 0;\n this.paintVertexAttributes = names.map((name) => ({\n name: `a_${name}`,\n type: 'Float32',\n components: type === 'color' ? 4 : 2,\n offset: 0\n }));\n this.paintVertexArray = new PaintVertexArray();\n }\n\n populatePaintArray(newLength: number, feature: Feature, imagePositions: {[_: string]: ImagePosition}, canonical?: CanonicalTileID, formattedSection?: FormattedSection) {\n const min = this.expression.evaluate(new EvaluationParameters(this.zoom), feature, {}, canonical, [], formattedSection);\n const max = this.expression.evaluate(new EvaluationParameters(this.zoom + 1), feature, {}, canonical, [], formattedSection);\n const start = this.paintVertexArray.length;\n this.paintVertexArray.resize(newLength);\n this._setPaintValue(start, newLength, min, max);\n }\n\n updatePaintArray(start: number, end: number, feature: Feature, featureState: FeatureState) {\n const min = this.expression.evaluate({zoom: this.zoom}, feature, featureState);\n const max = this.expression.evaluate({zoom: this.zoom + 1}, feature, featureState);\n this._setPaintValue(start, end, min, max);\n }\n\n _setPaintValue(start, end, min, max) {\n if (this.type === 'color') {\n const minColor = packColor(min);\n const maxColor = packColor(max);\n for (let i = start; i < end; i++) {\n this.paintVertexArray.emplace(i, minColor[0], minColor[1], maxColor[0], maxColor[1]);\n }\n } else {\n for (let i = start; i < end; i++) {\n this.paintVertexArray.emplace(i, min, max);\n }\n this.maxValue = Math.max(this.maxValue, Math.abs(min), Math.abs(max));\n }\n }\n\n upload(context: Context) {\n if (this.paintVertexArray && this.paintVertexArray.arrayBuffer) {\n if (this.paintVertexBuffer && this.paintVertexBuffer.buffer) {\n this.paintVertexBuffer.updateData(this.paintVertexArray);\n } else {\n this.paintVertexBuffer = context.createVertexBuffer(this.paintVertexArray, this.paintVertexAttributes, this.expression.isStateDependent);\n }\n }\n }\n\n destroy() {\n if (this.paintVertexBuffer) {\n this.paintVertexBuffer.destroy();\n }\n }\n\n setUniform(uniform: Uniform<*>, globals: GlobalProperties): void {\n const currentZoom = this.useIntegerZoom ? Math.floor(globals.zoom) : globals.zoom;\n const factor = clamp(this.expression.interpolationFactor(currentZoom, this.zoom, this.zoom + 1), 0, 1);\n uniform.set(factor);\n }\n\n getBinding(context: Context, location: WebGLUniformLocation, _: string): Uniform1f {\n return new Uniform1f(context, location);\n }\n}\n\nclass CrossFadedCompositeBinder implements AttributeBinder {\n expression: CompositeExpression;\n type: string;\n useIntegerZoom: boolean;\n zoom: number;\n layerId: string;\n\n zoomInPaintVertexArray: StructArray;\n zoomOutPaintVertexArray: StructArray;\n zoomInPaintVertexBuffer: ?VertexBuffer;\n zoomOutPaintVertexBuffer: ?VertexBuffer;\n paintVertexAttributes: Array;\n\n constructor(expression: CompositeExpression, type: string, useIntegerZoom: boolean, zoom: number, PaintVertexArray: Class, layerId: string) {\n this.expression = expression;\n this.type = type;\n this.useIntegerZoom = useIntegerZoom;\n this.zoom = zoom;\n this.layerId = layerId;\n\n this.zoomInPaintVertexArray = new PaintVertexArray();\n this.zoomOutPaintVertexArray = new PaintVertexArray();\n }\n\n populatePaintArray(length: number, feature: Feature, imagePositions: {[_: string]: ImagePosition}) {\n const start = this.zoomInPaintVertexArray.length;\n this.zoomInPaintVertexArray.resize(length);\n this.zoomOutPaintVertexArray.resize(length);\n this._setPaintValues(start, length, feature.patterns && feature.patterns[this.layerId], imagePositions);\n }\n\n updatePaintArray(start: number, end: number, feature: Feature, featureState: FeatureState, imagePositions: {[_: string]: ImagePosition}) {\n this._setPaintValues(start, end, feature.patterns && feature.patterns[this.layerId], imagePositions);\n }\n\n _setPaintValues(start, end, patterns, positions) {\n if (!positions || !patterns) return;\n\n const {min, mid, max} = patterns;\n const imageMin = positions[min];\n const imageMid = positions[mid];\n const imageMax = positions[max];\n if (!imageMin || !imageMid || !imageMax) return;\n\n // We populate two paint arrays because, for cross-faded properties, we don't know which direction\n // we're cross-fading to at layout time. In order to keep vertex attributes to a minimum and not pass\n // unnecessary vertex data to the shaders, we determine which to upload at draw time.\n for (let i = start; i < end; i++) {\n this.zoomInPaintVertexArray.emplace(i,\n imageMid.tl[0], imageMid.tl[1], imageMid.br[0], imageMid.br[1],\n imageMin.tl[0], imageMin.tl[1], imageMin.br[0], imageMin.br[1],\n imageMid.pixelRatio,\n imageMin.pixelRatio,\n );\n this.zoomOutPaintVertexArray.emplace(i,\n imageMid.tl[0], imageMid.tl[1], imageMid.br[0], imageMid.br[1],\n imageMax.tl[0], imageMax.tl[1], imageMax.br[0], imageMax.br[1],\n imageMid.pixelRatio,\n imageMax.pixelRatio,\n );\n }\n }\n\n upload(context: Context) {\n if (this.zoomInPaintVertexArray && this.zoomInPaintVertexArray.arrayBuffer && this.zoomOutPaintVertexArray && this.zoomOutPaintVertexArray.arrayBuffer) {\n this.zoomInPaintVertexBuffer = context.createVertexBuffer(this.zoomInPaintVertexArray, patternAttributes.members, this.expression.isStateDependent);\n this.zoomOutPaintVertexBuffer = context.createVertexBuffer(this.zoomOutPaintVertexArray, patternAttributes.members, this.expression.isStateDependent);\n }\n }\n\n destroy() {\n if (this.zoomOutPaintVertexBuffer) this.zoomOutPaintVertexBuffer.destroy();\n if (this.zoomInPaintVertexBuffer) this.zoomInPaintVertexBuffer.destroy();\n }\n}\n\n/**\n * ProgramConfiguration contains the logic for binding style layer properties and tile\n * layer feature data into GL program uniforms and vertex attributes.\n *\n * Non-data-driven property values are bound to shader uniforms. Data-driven property\n * values are bound to vertex attributes. In order to support a uniform GLSL syntax over\n * both, [Mapbox GL Shaders](https://github.com/mapbox/mapbox-gl-shaders) defines a `#pragma`\n * abstraction, which ProgramConfiguration is responsible for implementing. At runtime,\n * it examines the attributes of a particular layer, combines this with fixed knowledge\n * about how layers of the particular type are implemented, and determines which uniforms\n * and vertex attributes will be required. It can then substitute the appropriate text\n * into the shader source code, create and link a program, and bind the uniforms and\n * vertex attributes in preparation for drawing.\n *\n * When a vector tile is parsed, this same configuration information is used to\n * populate the attribute buffers needed for data-driven styling using the zoom\n * level and feature property data.\n *\n * @private\n */\nexport default class ProgramConfiguration {\n binders: {[_: string]: (AttributeBinder | UniformBinder) };\n cacheKey: string;\n\n _buffers: Array;\n\n constructor(layer: TypedStyleLayer, zoom: number, filterProperties: (_: string) => boolean) {\n this.binders = {};\n this._buffers = [];\n\n const keys = [];\n\n for (const property in layer.paint._values) {\n if (!filterProperties(property)) continue;\n const value = layer.paint.get(property);\n if (!(value instanceof PossiblyEvaluatedPropertyValue) || !supportsPropertyExpression(value.property.specification)) {\n continue;\n }\n const names = paintAttributeNames(property, layer.type);\n const expression = value.value;\n const type = value.property.specification.type;\n const useIntegerZoom = value.property.useIntegerZoom;\n const propType = value.property.specification['property-type'];\n const isCrossFaded = propType === 'cross-faded' || propType === 'cross-faded-data-driven';\n\n if (expression.kind === 'constant') {\n this.binders[property] = isCrossFaded ?\n new CrossFadedConstantBinder(expression.value, names) :\n new ConstantBinder(expression.value, names, type);\n keys.push(`/u_${property}`);\n\n } else if (expression.kind === 'source' || isCrossFaded) {\n const StructArrayLayout = layoutType(property, type, 'source');\n this.binders[property] = isCrossFaded ?\n new CrossFadedCompositeBinder(expression, type, useIntegerZoom, zoom, StructArrayLayout, layer.id) :\n new SourceExpressionBinder(expression, names, type, StructArrayLayout);\n keys.push(`/a_${property}`);\n\n } else {\n const StructArrayLayout = layoutType(property, type, 'composite');\n this.binders[property] = new CompositeExpressionBinder(expression, names, type, useIntegerZoom, zoom, StructArrayLayout);\n keys.push(`/z_${property}`);\n }\n }\n\n this.cacheKey = keys.sort().join('');\n }\n\n getMaxValue(property: string): number {\n const binder = this.binders[property];\n return binder instanceof SourceExpressionBinder || binder instanceof CompositeExpressionBinder ? binder.maxValue : 0;\n }\n\n populatePaintArrays(newLength: number, feature: Feature, imagePositions: {[_: string]: ImagePosition}, canonical?: CanonicalTileID, formattedSection?: FormattedSection) {\n for (const property in this.binders) {\n const binder = this.binders[property];\n if (binder instanceof SourceExpressionBinder || binder instanceof CompositeExpressionBinder || binder instanceof CrossFadedCompositeBinder)\n (binder: AttributeBinder).populatePaintArray(newLength, feature, imagePositions, canonical, formattedSection);\n }\n }\n setConstantPatternPositions(posTo: ImagePosition, posFrom: ImagePosition) {\n for (const property in this.binders) {\n const binder = this.binders[property];\n if (binder instanceof CrossFadedConstantBinder)\n binder.setConstantPatternPositions(posTo, posFrom);\n }\n }\n\n updatePaintArrays(featureStates: FeatureStates, featureMap: FeaturePositionMap, vtLayer: VectorTileLayer, layer: TypedStyleLayer, imagePositions: {[_: string]: ImagePosition}): boolean {\n let dirty: boolean = false;\n for (const id in featureStates) {\n const positions = featureMap.getPositions(id);\n\n for (const pos of positions) {\n const feature = vtLayer.feature(pos.index);\n\n for (const property in this.binders) {\n const binder = this.binders[property];\n if ((binder instanceof SourceExpressionBinder || binder instanceof CompositeExpressionBinder ||\n binder instanceof CrossFadedCompositeBinder) && (binder: any).expression.isStateDependent === true) {\n //AHM: Remove after https://github.com/mapbox/mapbox-gl-js/issues/6255\n const value = layer.paint.get(property);\n (binder: any).expression = value.value;\n (binder: AttributeBinder).updatePaintArray(pos.start, pos.end, feature, featureStates[id], imagePositions);\n dirty = true;\n }\n }\n }\n }\n return dirty;\n }\n\n defines(): Array {\n const result = [];\n for (const property in this.binders) {\n const binder = this.binders[property];\n if (binder instanceof ConstantBinder || binder instanceof CrossFadedConstantBinder) {\n result.push(...binder.uniformNames.map(name => `#define HAS_UNIFORM_${name}`));\n }\n }\n return result;\n }\n\n getBinderAttributes(): Array {\n const result = [];\n for (const property in this.binders) {\n const binder = this.binders[property];\n if (binder instanceof SourceExpressionBinder || binder instanceof CompositeExpressionBinder) {\n for (let i = 0; i < binder.paintVertexAttributes.length; i++) {\n result.push(binder.paintVertexAttributes[i].name);\n }\n } else if (binder instanceof CrossFadedCompositeBinder) {\n for (let i = 0; i < patternAttributes.members.length; i++) {\n result.push(patternAttributes.members[i].name);\n }\n }\n }\n return result;\n }\n\n getBinderUniforms(): Array {\n const uniforms = [];\n for (const property in this.binders) {\n const binder = this.binders[property];\n if (binder instanceof ConstantBinder || binder instanceof CrossFadedConstantBinder || binder instanceof CompositeExpressionBinder) {\n for (const uniformName of binder.uniformNames) {\n uniforms.push(uniformName);\n }\n }\n }\n return uniforms;\n }\n\n getPaintVertexBuffers(): Array {\n return this._buffers;\n }\n\n getUniforms(context: Context, locations: UniformLocations): Array {\n const uniforms = [];\n for (const property in this.binders) {\n const binder = this.binders[property];\n if (binder instanceof ConstantBinder || binder instanceof CrossFadedConstantBinder || binder instanceof CompositeExpressionBinder) {\n for (const name of binder.uniformNames) {\n if (locations[name]) {\n const binding = binder.getBinding(context, locations[name], name);\n uniforms.push({name, property, binding});\n }\n }\n }\n }\n return uniforms;\n }\n\n setUniforms(context: Context, binderUniforms: Array, properties: PossiblyEvaluated, globals: GlobalProperties) {\n // Uniform state bindings are owned by the Program, but we set them\n // from within the ProgramConfiguraton's binder members.\n for (const {name, property, binding} of binderUniforms) {\n (this.binders[property]: any).setUniform(binding, globals, properties.get(property), name);\n }\n }\n\n updatePaintBuffers(crossfade?: CrossfadeParameters) {\n this._buffers = [];\n\n for (const property in this.binders) {\n const binder = this.binders[property];\n if (crossfade && binder instanceof CrossFadedCompositeBinder) {\n const patternVertexBuffer = crossfade.fromScale === 2 ? binder.zoomInPaintVertexBuffer : binder.zoomOutPaintVertexBuffer;\n if (patternVertexBuffer) this._buffers.push(patternVertexBuffer);\n\n } else if ((binder instanceof SourceExpressionBinder || binder instanceof CompositeExpressionBinder) && binder.paintVertexBuffer) {\n this._buffers.push(binder.paintVertexBuffer);\n }\n }\n }\n\n upload(context: Context) {\n for (const property in this.binders) {\n const binder = this.binders[property];\n if (binder instanceof SourceExpressionBinder || binder instanceof CompositeExpressionBinder || binder instanceof CrossFadedCompositeBinder)\n binder.upload(context);\n }\n this.updatePaintBuffers();\n }\n\n destroy() {\n for (const property in this.binders) {\n const binder = this.binders[property];\n if (binder instanceof SourceExpressionBinder || binder instanceof CompositeExpressionBinder || binder instanceof CrossFadedCompositeBinder)\n binder.destroy();\n }\n }\n}\n\nexport class ProgramConfigurationSet {\n programConfigurations: {[_: string]: ProgramConfiguration};\n needsUpload: boolean;\n _featureMap: FeaturePositionMap;\n _bufferOffset: number;\n\n constructor(layers: $ReadOnlyArray, zoom: number, filterProperties: (_: string) => boolean = () => true) {\n this.programConfigurations = {};\n for (const layer of layers) {\n this.programConfigurations[layer.id] = new ProgramConfiguration(layer, zoom, filterProperties);\n }\n this.needsUpload = false;\n this._featureMap = new FeaturePositionMap();\n this._bufferOffset = 0;\n }\n\n populatePaintArrays(length: number, feature: Feature, index: number, imagePositions: {[_: string]: ImagePosition}, canonical: CanonicalTileID, formattedSection?: FormattedSection) {\n for (const key in this.programConfigurations) {\n this.programConfigurations[key].populatePaintArrays(length, feature, imagePositions, canonical, formattedSection);\n }\n\n if (feature.id !== undefined) {\n this._featureMap.add(feature.id, index, this._bufferOffset, length);\n }\n this._bufferOffset = length;\n\n this.needsUpload = true;\n }\n\n updatePaintArrays(featureStates: FeatureStates, vtLayer: VectorTileLayer, layers: $ReadOnlyArray, imagePositions: {[_: string]: ImagePosition}) {\n for (const layer of layers) {\n this.needsUpload = this.programConfigurations[layer.id].updatePaintArrays(featureStates, this._featureMap, vtLayer, layer, imagePositions) || this.needsUpload;\n }\n }\n\n get(layerId: string) {\n return this.programConfigurations[layerId];\n }\n\n upload(context: Context) {\n if (!this.needsUpload) return;\n for (const layerId in this.programConfigurations) {\n this.programConfigurations[layerId].upload(context);\n }\n this.needsUpload = false;\n }\n\n destroy() {\n for (const layerId in this.programConfigurations) {\n this.programConfigurations[layerId].destroy();\n }\n }\n}\n\nfunction paintAttributeNames(property, type) {\n const attributeNameExceptions = {\n 'text-opacity': ['opacity'],\n 'icon-opacity': ['opacity'],\n 'text-color': ['fill_color'],\n 'icon-color': ['fill_color'],\n 'text-halo-color': ['halo_color'],\n 'icon-halo-color': ['halo_color'],\n 'text-halo-blur': ['halo_blur'],\n 'icon-halo-blur': ['halo_blur'],\n 'text-halo-width': ['halo_width'],\n 'icon-halo-width': ['halo_width'],\n 'line-gap-width': ['gapwidth'],\n 'line-pattern': ['pattern_to', 'pattern_from', 'pixel_ratio_to', 'pixel_ratio_from'],\n 'fill-pattern': ['pattern_to', 'pattern_from', 'pixel_ratio_to', 'pixel_ratio_from'],\n 'fill-extrusion-pattern': ['pattern_to', 'pattern_from', 'pixel_ratio_to', 'pixel_ratio_from'],\n };\n\n return attributeNameExceptions[property] || [property.replace(`${type}-`, '').replace(/-/g, '_')];\n}\n\nfunction getLayoutException(property) {\n const propertyExceptions = {\n 'line-pattern':{\n 'source': PatternLayoutArray,\n 'composite': PatternLayoutArray\n },\n 'fill-pattern': {\n 'source': PatternLayoutArray,\n 'composite': PatternLayoutArray\n },\n 'fill-extrusion-pattern':{\n 'source': PatternLayoutArray,\n 'composite': PatternLayoutArray\n }\n };\n\n return propertyExceptions[property];\n}\n\nfunction layoutType(property, type, binderType) {\n const defaultLayouts = {\n 'color': {\n 'source': StructArrayLayout2f8,\n 'composite': StructArrayLayout4f16\n },\n 'number': {\n 'source': StructArrayLayout1f4,\n 'composite': StructArrayLayout2f8\n }\n };\n\n const layoutException = getLayoutException(property);\n return layoutException && layoutException[binderType] || defaultLayouts[type][binderType];\n}\n\nregister('ConstantBinder', ConstantBinder);\nregister('CrossFadedConstantBinder', CrossFadedConstantBinder);\nregister('SourceExpressionBinder', SourceExpressionBinder);\nregister('CrossFadedCompositeBinder', CrossFadedCompositeBinder);\nregister('CompositeExpressionBinder', CompositeExpressionBinder);\nregister('ProgramConfiguration', ProgramConfiguration, {omit: ['_buffers']});\nregister('ProgramConfigurationSet', ProgramConfigurationSet);\n", "// @flow\n\n/**\n * The maximum value of a coordinate in the internal tile coordinate system. Coordinates of\n * all source features normalized to this extent upon load.\n *\n * The value is a consequence of the following:\n *\n * * Vertex buffer store positions as signed 16 bit integers.\n * * One bit is lost for signedness to support tile buffers.\n * * One bit is lost because the line vertex buffer used to pack 1 bit of other data into the int.\n * * One bit is lost to support features extending past the extent on the right edge of the tile.\n * * This leaves us with 2^13 = 8192\n *\n * @private\n * @readonly\n */\nexport default 8192;\n", "// @flow\n\nimport {warnOnce, clamp} from '../util/util';\n\nimport EXTENT from './extent';\n\nimport type Point from '@mapbox/point-geometry';\n\n// These bounds define the minimum and maximum supported coordinate values.\n// While visible coordinates are within [0, EXTENT], tiles may theoretically\n// contain cordinates within [-Infinity, Infinity]. Our range is limited by the\n// number of bits used to represent the coordinate.\nconst BITS = 15;\nconst MAX = Math.pow(2, BITS - 1) - 1;\nconst MIN = -MAX - 1;\n\n/**\n * Loads a geometry from a VectorTileFeature and scales it to the common extent\n * used internally.\n * @param {VectorTileFeature} feature\n * @private\n */\nexport default function loadGeometry(feature: VectorTileFeature): Array> {\n const scale = EXTENT / feature.extent;\n const geometry = feature.loadGeometry();\n for (let r = 0; r < geometry.length; r++) {\n const ring = geometry[r];\n for (let p = 0; p < ring.length; p++) {\n const point = ring[p];\n // round here because mapbox-gl-native uses integers to represent\n // points and we need to do the same to avoid renering differences.\n const x = Math.round(point.x * scale);\n const y = Math.round(point.y * scale);\n\n point.x = clamp(x, MIN, MAX);\n point.y = clamp(y, MIN, MAX);\n\n if (x < point.x || x > point.x + 1 || y < point.y || y > point.y + 1) {\n // warn when exceeding allowed extent except for the 1-px-off case\n // https://github.com/mapbox/mapbox-gl-js/issues/8992\n warnOnce('Geometry exceeds allowed extent, reduce your vector tile buffer size');\n }\n }\n }\n return geometry;\n}\n", "// @flow\n\nimport loadGeometry from './load_geometry';\n\ntype EvaluationFeature = {\n +type: 1 | 2 | 3 | 'Unknown' | 'Point' | 'MultiPoint' | 'LineString' | 'MultiLineString' | 'Polygon' | 'MultiPolygon',\n +id?: any,\n +properties: {[_: string]: any},\n +patterns?: {[_: string]: {\"min\": string, \"mid\": string, \"max\": string}},\n geometry: Array>\n};\n\n/**\n * Construct a new feature based on a VectorTileFeature for expression evaluation, the geometry of which\n * will be loaded based on necessity.\n * @param {VectorTileFeature} feature\n * @param {boolean} needGeometry\n * @private\n */\nexport default function toEvaluationFeature(feature: VectorTileFeature, needGeometry: boolean): EvaluationFeature {\n return {type: feature.type,\n id: feature.id,\n properties:feature.properties,\n geometry: needGeometry ? loadGeometry(feature) : []};\n}\n", "// @flow\n\nimport {CircleLayoutArray} from '../array_types';\n\nimport {members as layoutAttributes} from './circle_attributes';\nimport SegmentVector from '../segment';\nimport {ProgramConfigurationSet} from '../program_configuration';\nimport {TriangleIndexArray} from '../index_array_type';\nimport loadGeometry from '../load_geometry';\nimport toEvaluationFeature from '../evaluation_feature';\nimport EXTENT from '../extent';\nimport {register} from '../../util/web_worker_transfer';\nimport EvaluationParameters from '../../style/evaluation_parameters';\n\nimport type {CanonicalTileID} from '../../source/tile_id';\nimport type {\n Bucket,\n BucketParameters,\n BucketFeature,\n IndexedFeature,\n PopulateParameters\n} from '../bucket';\nimport type CircleStyleLayer from '../../style/style_layer/circle_style_layer';\nimport type HeatmapStyleLayer from '../../style/style_layer/heatmap_style_layer';\nimport type Context from '../../gl/context';\nimport type IndexBuffer from '../../gl/index_buffer';\nimport type VertexBuffer from '../../gl/vertex_buffer';\nimport type Point from '@mapbox/point-geometry';\nimport type {FeatureStates} from '../../source/source_state';\nimport type {ImagePosition} from '../../render/image_atlas';\n\nfunction addCircleVertex(layoutVertexArray, x, y, extrudeX, extrudeY) {\n layoutVertexArray.emplaceBack(\n (x * 2) + ((extrudeX + 1) / 2),\n (y * 2) + ((extrudeY + 1) / 2));\n}\n\n/**\n * Circles are represented by two triangles.\n *\n * Each corner has a pos that is the center of the circle and an extrusion\n * vector that is where it points.\n * @private\n */\nclass CircleBucket implements Bucket {\n index: number;\n zoom: number;\n overscaling: number;\n layerIds: Array;\n layers: Array;\n stateDependentLayers: Array;\n stateDependentLayerIds: Array;\n\n layoutVertexArray: CircleLayoutArray;\n layoutVertexBuffer: VertexBuffer;\n\n indexArray: TriangleIndexArray;\n indexBuffer: IndexBuffer;\n\n hasPattern: boolean;\n programConfigurations: ProgramConfigurationSet;\n segments: SegmentVector;\n uploaded: boolean;\n\n constructor(options: BucketParameters) {\n this.zoom = options.zoom;\n this.overscaling = options.overscaling;\n this.layers = options.layers;\n this.layerIds = this.layers.map(layer => layer.id);\n this.index = options.index;\n this.hasPattern = false;\n\n this.layoutVertexArray = new CircleLayoutArray();\n this.indexArray = new TriangleIndexArray();\n this.segments = new SegmentVector();\n this.programConfigurations = new ProgramConfigurationSet(options.layers, options.zoom);\n this.stateDependentLayerIds = this.layers.filter((l) => l.isStateDependent()).map((l) => l.id);\n }\n\n populate(features: Array, options: PopulateParameters, canonical: CanonicalTileID) {\n const styleLayer = this.layers[0];\n const bucketFeatures = [];\n let circleSortKey = null;\n\n // Heatmap layers are handled in this bucket and have no evaluated properties, so we check our access\n if (styleLayer.type === 'circle') {\n circleSortKey = ((styleLayer: any): CircleStyleLayer).layout.get('circle-sort-key');\n }\n\n for (const {feature, id, index, sourceLayerIndex} of features) {\n const needGeometry = this.layers[0]._featureFilter.needGeometry;\n const evaluationFeature = toEvaluationFeature(feature, needGeometry);\n\n if (!this.layers[0]._featureFilter.filter(new EvaluationParameters(this.zoom), evaluationFeature, canonical)) continue;\n\n const sortKey = circleSortKey ?\n circleSortKey.evaluate(evaluationFeature, {}, canonical) :\n undefined;\n\n const bucketFeature: BucketFeature = {\n id,\n properties: feature.properties,\n type: feature.type,\n sourceLayerIndex,\n index,\n geometry: needGeometry ? evaluationFeature.geometry : loadGeometry(feature),\n patterns: {},\n sortKey\n };\n\n bucketFeatures.push(bucketFeature);\n\n }\n\n if (circleSortKey) {\n bucketFeatures.sort((a, b) => {\n // a.sortKey is always a number when in use\n return ((a.sortKey: any): number) - ((b.sortKey: any): number);\n });\n }\n\n for (const bucketFeature of bucketFeatures) {\n const {geometry, index, sourceLayerIndex} = bucketFeature;\n const feature = features[index].feature;\n\n this.addFeature(bucketFeature, geometry, index, canonical);\n options.featureIndex.insert(feature, geometry, index, sourceLayerIndex, this.index);\n }\n }\n\n update(states: FeatureStates, vtLayer: VectorTileLayer, imagePositions: {[_: string]: ImagePosition}) {\n if (!this.stateDependentLayers.length) return;\n this.programConfigurations.updatePaintArrays(states, vtLayer, this.stateDependentLayers, imagePositions);\n }\n\n isEmpty() {\n return this.layoutVertexArray.length === 0;\n }\n\n uploadPending() {\n return !this.uploaded || this.programConfigurations.needsUpload;\n }\n\n upload(context: Context) {\n if (!this.uploaded) {\n this.layoutVertexBuffer = context.createVertexBuffer(this.layoutVertexArray, layoutAttributes);\n this.indexBuffer = context.createIndexBuffer(this.indexArray);\n }\n this.programConfigurations.upload(context);\n this.uploaded = true;\n }\n\n destroy() {\n if (!this.layoutVertexBuffer) return;\n this.layoutVertexBuffer.destroy();\n this.indexBuffer.destroy();\n this.programConfigurations.destroy();\n this.segments.destroy();\n }\n\n addFeature(feature: BucketFeature, geometry: Array>, index: number, canonical: CanonicalTileID) {\n for (const ring of geometry) {\n for (const point of ring) {\n const x = point.x;\n const y = point.y;\n\n // Do not include points that are outside the tile boundaries.\n if (x < 0 || x >= EXTENT || y < 0 || y >= EXTENT) continue;\n\n // this geometry will be of the Point type, and we'll derive\n // two triangles from it.\n //\n // ┌─────────┐\n // │ 3 2 │\n // │ │\n // │ 0 1 │\n // └─────────┘\n\n const segment = this.segments.prepareSegment(4, this.layoutVertexArray, this.indexArray, feature.sortKey);\n const index = segment.vertexLength;\n\n addCircleVertex(this.layoutVertexArray, x, y, -1, -1);\n addCircleVertex(this.layoutVertexArray, x, y, 1, -1);\n addCircleVertex(this.layoutVertexArray, x, y, 1, 1);\n addCircleVertex(this.layoutVertexArray, x, y, -1, 1);\n\n this.indexArray.emplaceBack(index, index + 1, index + 2);\n this.indexArray.emplaceBack(index, index + 3, index + 2);\n\n segment.vertexLength += 4;\n segment.primitiveLength += 2;\n }\n }\n\n this.programConfigurations.populatePaintArrays(this.layoutVertexArray.length, feature, index, {}, canonical);\n }\n}\n\nregister('CircleBucket', CircleBucket, {omit: ['layers']});\n\nexport default CircleBucket;\n", "// @flow\n\nimport {isCounterClockwise} from './util';\n\nimport Point from '@mapbox/point-geometry';\n\nexport {polygonIntersectsBufferedPoint, polygonIntersectsMultiPolygon, polygonIntersectsBufferedMultiLine, polygonIntersectsPolygon, distToSegmentSquared, polygonIntersectsBox};\n\ntype Line = Array;\ntype MultiLine = Array;\ntype Ring = Array;\ntype Polygon = Array;\ntype MultiPolygon = Array;\n\nfunction polygonIntersectsPolygon(polygonA: Polygon, polygonB: Polygon) {\n for (let i = 0; i < polygonA.length; i++) {\n if (polygonContainsPoint(polygonB, polygonA[i])) return true;\n }\n\n for (let i = 0; i < polygonB.length; i++) {\n if (polygonContainsPoint(polygonA, polygonB[i])) return true;\n }\n\n if (lineIntersectsLine(polygonA, polygonB)) return true;\n\n return false;\n}\n\nfunction polygonIntersectsBufferedPoint(polygon: Polygon, point: Point, radius: number) {\n if (polygonContainsPoint(polygon, point)) return true;\n if (pointIntersectsBufferedLine(point, polygon, radius)) return true;\n return false;\n}\n\nfunction polygonIntersectsMultiPolygon(polygon: Polygon, multiPolygon: MultiPolygon) {\n\n if (polygon.length === 1) {\n return multiPolygonContainsPoint(multiPolygon, polygon[0]);\n }\n\n for (let m = 0; m < multiPolygon.length; m++) {\n const ring = multiPolygon[m];\n for (let n = 0; n < ring.length; n++) {\n if (polygonContainsPoint(polygon, ring[n])) return true;\n }\n }\n\n for (let i = 0; i < polygon.length; i++) {\n if (multiPolygonContainsPoint(multiPolygon, polygon[i])) return true;\n }\n\n for (let k = 0; k < multiPolygon.length; k++) {\n if (lineIntersectsLine(polygon, multiPolygon[k])) return true;\n }\n\n return false;\n}\n\nfunction polygonIntersectsBufferedMultiLine(polygon: Polygon, multiLine: MultiLine, radius: number) {\n for (let i = 0; i < multiLine.length; i++) {\n const line = multiLine[i];\n\n if (polygon.length >= 3) {\n for (let k = 0; k < line.length; k++) {\n if (polygonContainsPoint(polygon, line[k])) return true;\n }\n }\n\n if (lineIntersectsBufferedLine(polygon, line, radius)) return true;\n }\n return false;\n}\n\nfunction lineIntersectsBufferedLine(lineA: Line, lineB: Line, radius: number) {\n\n if (lineA.length > 1) {\n if (lineIntersectsLine(lineA, lineB)) return true;\n\n // Check whether any point in either line is within radius of the other line\n for (let j = 0; j < lineB.length; j++) {\n if (pointIntersectsBufferedLine(lineB[j], lineA, radius)) return true;\n }\n }\n\n for (let k = 0; k < lineA.length; k++) {\n if (pointIntersectsBufferedLine(lineA[k], lineB, radius)) return true;\n }\n\n return false;\n}\n\nfunction lineIntersectsLine(lineA: Line, lineB: Line) {\n if (lineA.length === 0 || lineB.length === 0) return false;\n for (let i = 0; i < lineA.length - 1; i++) {\n const a0 = lineA[i];\n const a1 = lineA[i + 1];\n for (let j = 0; j < lineB.length - 1; j++) {\n const b0 = lineB[j];\n const b1 = lineB[j + 1];\n if (lineSegmentIntersectsLineSegment(a0, a1, b0, b1)) return true;\n }\n }\n return false;\n}\n\nfunction lineSegmentIntersectsLineSegment(a0: Point, a1: Point, b0: Point, b1: Point) {\n return isCounterClockwise(a0, b0, b1) !== isCounterClockwise(a1, b0, b1) &&\n isCounterClockwise(a0, a1, b0) !== isCounterClockwise(a0, a1, b1);\n}\n\nfunction pointIntersectsBufferedLine(p: Point, line: Line, radius: number) {\n const radiusSquared = radius * radius;\n\n if (line.length === 1) return p.distSqr(line[0]) < radiusSquared;\n\n for (let i = 1; i < line.length; i++) {\n // Find line segments that have a distance <= radius^2 to p\n // In that case, we treat the line as \"containing point p\".\n const v = line[i - 1], w = line[i];\n if (distToSegmentSquared(p, v, w) < radiusSquared) return true;\n }\n return false;\n}\n\n// Code from http://stackoverflow.com/a/1501725/331379.\nfunction distToSegmentSquared(p: Point, v: Point, w: Point) {\n const l2 = v.distSqr(w);\n if (l2 === 0) return p.distSqr(v);\n const t = ((p.x - v.x) * (w.x - v.x) + (p.y - v.y) * (w.y - v.y)) / l2;\n if (t < 0) return p.distSqr(v);\n if (t > 1) return p.distSqr(w);\n return p.distSqr(w.sub(v)._mult(t)._add(v));\n}\n\n// point in polygon ray casting algorithm\nfunction multiPolygonContainsPoint(rings: Array, p: Point) {\n let c = false,\n ring, p1, p2;\n\n for (let k = 0; k < rings.length; k++) {\n ring = rings[k];\n for (let i = 0, j = ring.length - 1; i < ring.length; j = i++) {\n p1 = ring[i];\n p2 = ring[j];\n if (((p1.y > p.y) !== (p2.y > p.y)) && (p.x < (p2.x - p1.x) * (p.y - p1.y) / (p2.y - p1.y) + p1.x)) {\n c = !c;\n }\n }\n }\n return c;\n}\n\nfunction polygonContainsPoint(ring: Ring, p: Point) {\n let c = false;\n for (let i = 0, j = ring.length - 1; i < ring.length; j = i++) {\n const p1 = ring[i];\n const p2 = ring[j];\n if (((p1.y > p.y) !== (p2.y > p.y)) && (p.x < (p2.x - p1.x) * (p.y - p1.y) / (p2.y - p1.y) + p1.x)) {\n c = !c;\n }\n }\n return c;\n}\n\nfunction polygonIntersectsBox(ring: Ring, boxX1: number, boxY1: number, boxX2: number, boxY2: number) {\n for (const p of ring) {\n if (boxX1 <= p.x &&\n boxY1 <= p.y &&\n boxX2 >= p.x &&\n boxY2 >= p.y) return true;\n }\n\n const corners = [\n new Point(boxX1, boxY1),\n new Point(boxX1, boxY2),\n new Point(boxX2, boxY2),\n new Point(boxX2, boxY1)];\n\n if (ring.length > 2) {\n for (const corner of corners) {\n if (polygonContainsPoint(ring, corner)) return true;\n }\n }\n\n for (let i = 0; i < ring.length - 1; i++) {\n const p1 = ring[i];\n const p2 = ring[i + 1];\n if (edgeIntersectsBox(p1, p2, corners)) return true;\n }\n\n return false;\n}\n\nfunction edgeIntersectsBox(e1: Point, e2: Point, corners: Array) {\n const tl = corners[0];\n const br = corners[2];\n // the edge and box do not intersect in either the x or y dimensions\n if (((e1.x < tl.x) && (e2.x < tl.x)) ||\n ((e1.x > br.x) && (e2.x > br.x)) ||\n ((e1.y < tl.y) && (e2.y < tl.y)) ||\n ((e1.y > br.y) && (e2.y > br.y))) return false;\n\n // check if all corners of the box are on the same side of the edge\n const dir = isCounterClockwise(e1, e2, corners[0]);\n return dir !== isCounterClockwise(e1, e2, corners[1]) ||\n dir !== isCounterClockwise(e1, e2, corners[2]) ||\n dir !== isCounterClockwise(e1, e2, corners[3]);\n}\n", "// @flow\n\nimport Point from '@mapbox/point-geometry';\n\nimport type {PossiblyEvaluatedPropertyValue} from \"./properties\";\nimport type StyleLayer from '../style/style_layer';\nimport type CircleBucket from '../data/bucket/circle_bucket';\nimport type LineBucket from '../data/bucket/line_bucket';\n\nexport function getMaximumPaintValue(property: string, layer: StyleLayer, bucket: CircleBucket<*> | LineBucket): number {\n const value = ((layer.paint: any).get(property): PossiblyEvaluatedPropertyValue).value;\n if (value.kind === 'constant') {\n return value.value;\n } else {\n return bucket.programConfigurations.get(layer.id).getMaxValue(property);\n }\n}\n\nexport function translateDistance(translate: [number, number]) {\n return Math.sqrt(translate[0] * translate[0] + translate[1] * translate[1]);\n}\n\nexport function translate(queryGeometry: Array,\n translate: [number, number],\n translateAnchor: 'viewport' | 'map',\n bearing: number,\n pixelsToTileUnits: number) {\n if (!translate[0] && !translate[1]) {\n return queryGeometry;\n }\n const pt = Point.convert(translate)._mult(pixelsToTileUnits);\n\n if (translateAnchor === \"viewport\") {\n pt._rotate(-bearing);\n }\n\n const translated = [];\n for (let i = 0; i < queryGeometry.length; i++) {\n const point = queryGeometry[i];\n translated.push(point.sub(pt));\n }\n return translated;\n}\n", "// This file is generated. Edit build/generate-style-code.js, then run `yarn run codegen`.\n// @flow\n/* eslint-disable */\n\nimport styleSpec from '../../style-spec/reference/latest';\n\nimport {\n Properties,\n DataConstantProperty,\n DataDrivenProperty,\n CrossFadedDataDrivenProperty,\n CrossFadedProperty,\n ColorRampProperty\n} from '../properties';\n\nimport type Color from '../../style-spec/util/color';\n\nimport type Formatted from '../../style-spec/expression/types/formatted';\n\nimport type ResolvedImage from '../../style-spec/expression/types/resolved_image';\n\nexport type LayoutProps = {|\n \"circle-sort-key\": DataDrivenProperty,\n|};\n\nconst layout: Properties = new Properties({\n \"circle-sort-key\": new DataDrivenProperty(styleSpec[\"layout_circle\"][\"circle-sort-key\"]),\n});\n\nexport type PaintProps = {|\n \"circle-radius\": DataDrivenProperty,\n \"circle-color\": DataDrivenProperty,\n \"circle-blur\": DataDrivenProperty,\n \"circle-opacity\": DataDrivenProperty,\n \"circle-translate\": DataConstantProperty<[number, number]>,\n \"circle-translate-anchor\": DataConstantProperty<\"map\" | \"viewport\">,\n \"circle-pitch-scale\": DataConstantProperty<\"map\" | \"viewport\">,\n \"circle-pitch-alignment\": DataConstantProperty<\"map\" | \"viewport\">,\n \"circle-stroke-width\": DataDrivenProperty,\n \"circle-stroke-color\": DataDrivenProperty,\n \"circle-stroke-opacity\": DataDrivenProperty,\n|};\n\nconst paint: Properties = new Properties({\n \"circle-radius\": new DataDrivenProperty(styleSpec[\"paint_circle\"][\"circle-radius\"]),\n \"circle-color\": new DataDrivenProperty(styleSpec[\"paint_circle\"][\"circle-color\"]),\n \"circle-blur\": new DataDrivenProperty(styleSpec[\"paint_circle\"][\"circle-blur\"]),\n \"circle-opacity\": new DataDrivenProperty(styleSpec[\"paint_circle\"][\"circle-opacity\"]),\n \"circle-translate\": new DataConstantProperty(styleSpec[\"paint_circle\"][\"circle-translate\"]),\n \"circle-translate-anchor\": new DataConstantProperty(styleSpec[\"paint_circle\"][\"circle-translate-anchor\"]),\n \"circle-pitch-scale\": new DataConstantProperty(styleSpec[\"paint_circle\"][\"circle-pitch-scale\"]),\n \"circle-pitch-alignment\": new DataConstantProperty(styleSpec[\"paint_circle\"][\"circle-pitch-alignment\"]),\n \"circle-stroke-width\": new DataDrivenProperty(styleSpec[\"paint_circle\"][\"circle-stroke-width\"]),\n \"circle-stroke-color\": new DataDrivenProperty(styleSpec[\"paint_circle\"][\"circle-stroke-color\"]),\n \"circle-stroke-opacity\": new DataDrivenProperty(styleSpec[\"paint_circle\"][\"circle-stroke-opacity\"]),\n});\n\n// Note: without adding the explicit type annotation, Flow infers weaker types\n// for these objects from their use in the constructor to StyleLayer, as\n// {layout?: Properties<...>, paint: Properties<...>}\nexport default ({ paint, layout }: $Exact<{\n paint: Properties, layout: Properties\n}>);\n", "/**\r\n * Common utilities\r\n * @module glMatrix\r\n */\n// Configuration Constants\nexport var EPSILON = 0.000001;\nexport var ARRAY_TYPE = typeof Float32Array !== 'undefined' ? Float32Array : Array;\nexport var RANDOM = Math.random;\n/**\r\n * Sets the type of array used when creating new vectors and matrices\r\n *\r\n * @param {Type} type Array type, such as Float32Array or Array\r\n */\n\nexport function setMatrixArrayType(type) {\n ARRAY_TYPE = type;\n}\nvar degree = Math.PI / 180;\n/**\r\n * Convert Degree To Radian\r\n *\r\n * @param {Number} a Angle in Degrees\r\n */\n\nexport function toRadian(a) {\n return a * degree;\n}\n/**\r\n * Tests whether or not the arguments have approximately the same value, within an absolute\r\n * or relative tolerance of glMatrix.EPSILON (an absolute tolerance is used for values less\r\n * than or equal to 1.0, and a relative tolerance is used for larger values)\r\n *\r\n * @param {Number} a The first number to test.\r\n * @param {Number} b The second number to test.\r\n * @returns {Boolean} True if the numbers are approximately equal, false otherwise.\r\n */\n\nexport function equals(a, b) {\n return Math.abs(a - b) <= EPSILON * Math.max(1.0, Math.abs(a), Math.abs(b));\n}\nif (!Math.hypot) Math.hypot = function () {\n var y = 0,\n i = arguments.length;\n\n while (i--) {\n y += arguments[i] * arguments[i];\n }\n\n return Math.sqrt(y);\n};", "import * as glMatrix from \"./common.js\";\n/**\r\n * 4x4 Matrix
Format: column-major, when typed out it looks like row-major
The matrices are being post multiplied.\r\n * @module mat4\r\n */\n\n/**\r\n * Creates a new identity mat4\r\n *\r\n * @returns {mat4} a new 4x4 matrix\r\n */\n\nexport function create() {\n var out = new glMatrix.ARRAY_TYPE(16);\n\n if (glMatrix.ARRAY_TYPE != Float32Array) {\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = 0;\n out[6] = 0;\n out[7] = 0;\n out[8] = 0;\n out[9] = 0;\n out[11] = 0;\n out[12] = 0;\n out[13] = 0;\n out[14] = 0;\n }\n\n out[0] = 1;\n out[5] = 1;\n out[10] = 1;\n out[15] = 1;\n return out;\n}\n/**\r\n * Creates a new mat4 initialized with values from an existing matrix\r\n *\r\n * @param {mat4} a matrix to clone\r\n * @returns {mat4} a new 4x4 matrix\r\n */\n\nexport function clone(a) {\n var out = new glMatrix.ARRAY_TYPE(16);\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n out[3] = a[3];\n out[4] = a[4];\n out[5] = a[5];\n out[6] = a[6];\n out[7] = a[7];\n out[8] = a[8];\n out[9] = a[9];\n out[10] = a[10];\n out[11] = a[11];\n out[12] = a[12];\n out[13] = a[13];\n out[14] = a[14];\n out[15] = a[15];\n return out;\n}\n/**\r\n * Copy the values from one mat4 to another\r\n *\r\n * @param {mat4} out the receiving matrix\r\n * @param {mat4} a the source matrix\r\n * @returns {mat4} out\r\n */\n\nexport function copy(out, a) {\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n out[3] = a[3];\n out[4] = a[4];\n out[5] = a[5];\n out[6] = a[6];\n out[7] = a[7];\n out[8] = a[8];\n out[9] = a[9];\n out[10] = a[10];\n out[11] = a[11];\n out[12] = a[12];\n out[13] = a[13];\n out[14] = a[14];\n out[15] = a[15];\n return out;\n}\n/**\r\n * Create a new mat4 with the given values\r\n *\r\n * @param {Number} m00 Component in column 0, row 0 position (index 0)\r\n * @param {Number} m01 Component in column 0, row 1 position (index 1)\r\n * @param {Number} m02 Component in column 0, row 2 position (index 2)\r\n * @param {Number} m03 Component in column 0, row 3 position (index 3)\r\n * @param {Number} m10 Component in column 1, row 0 position (index 4)\r\n * @param {Number} m11 Component in column 1, row 1 position (index 5)\r\n * @param {Number} m12 Component in column 1, row 2 position (index 6)\r\n * @param {Number} m13 Component in column 1, row 3 position (index 7)\r\n * @param {Number} m20 Component in column 2, row 0 position (index 8)\r\n * @param {Number} m21 Component in column 2, row 1 position (index 9)\r\n * @param {Number} m22 Component in column 2, row 2 position (index 10)\r\n * @param {Number} m23 Component in column 2, row 3 position (index 11)\r\n * @param {Number} m30 Component in column 3, row 0 position (index 12)\r\n * @param {Number} m31 Component in column 3, row 1 position (index 13)\r\n * @param {Number} m32 Component in column 3, row 2 position (index 14)\r\n * @param {Number} m33 Component in column 3, row 3 position (index 15)\r\n * @returns {mat4} A new mat4\r\n */\n\nexport function fromValues(m00, m01, m02, m03, m10, m11, m12, m13, m20, m21, m22, m23, m30, m31, m32, m33) {\n var out = new glMatrix.ARRAY_TYPE(16);\n out[0] = m00;\n out[1] = m01;\n out[2] = m02;\n out[3] = m03;\n out[4] = m10;\n out[5] = m11;\n out[6] = m12;\n out[7] = m13;\n out[8] = m20;\n out[9] = m21;\n out[10] = m22;\n out[11] = m23;\n out[12] = m30;\n out[13] = m31;\n out[14] = m32;\n out[15] = m33;\n return out;\n}\n/**\r\n * Set the components of a mat4 to the given values\r\n *\r\n * @param {mat4} out the receiving matrix\r\n * @param {Number} m00 Component in column 0, row 0 position (index 0)\r\n * @param {Number} m01 Component in column 0, row 1 position (index 1)\r\n * @param {Number} m02 Component in column 0, row 2 position (index 2)\r\n * @param {Number} m03 Component in column 0, row 3 position (index 3)\r\n * @param {Number} m10 Component in column 1, row 0 position (index 4)\r\n * @param {Number} m11 Component in column 1, row 1 position (index 5)\r\n * @param {Number} m12 Component in column 1, row 2 position (index 6)\r\n * @param {Number} m13 Component in column 1, row 3 position (index 7)\r\n * @param {Number} m20 Component in column 2, row 0 position (index 8)\r\n * @param {Number} m21 Component in column 2, row 1 position (index 9)\r\n * @param {Number} m22 Component in column 2, row 2 position (index 10)\r\n * @param {Number} m23 Component in column 2, row 3 position (index 11)\r\n * @param {Number} m30 Component in column 3, row 0 position (index 12)\r\n * @param {Number} m31 Component in column 3, row 1 position (index 13)\r\n * @param {Number} m32 Component in column 3, row 2 position (index 14)\r\n * @param {Number} m33 Component in column 3, row 3 position (index 15)\r\n * @returns {mat4} out\r\n */\n\nexport function set(out, m00, m01, m02, m03, m10, m11, m12, m13, m20, m21, m22, m23, m30, m31, m32, m33) {\n out[0] = m00;\n out[1] = m01;\n out[2] = m02;\n out[3] = m03;\n out[4] = m10;\n out[5] = m11;\n out[6] = m12;\n out[7] = m13;\n out[8] = m20;\n out[9] = m21;\n out[10] = m22;\n out[11] = m23;\n out[12] = m30;\n out[13] = m31;\n out[14] = m32;\n out[15] = m33;\n return out;\n}\n/**\r\n * Set a mat4 to the identity matrix\r\n *\r\n * @param {mat4} out the receiving matrix\r\n * @returns {mat4} out\r\n */\n\nexport function identity(out) {\n out[0] = 1;\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = 0;\n out[5] = 1;\n out[6] = 0;\n out[7] = 0;\n out[8] = 0;\n out[9] = 0;\n out[10] = 1;\n out[11] = 0;\n out[12] = 0;\n out[13] = 0;\n out[14] = 0;\n out[15] = 1;\n return out;\n}\n/**\r\n * Transpose the values of a mat4\r\n *\r\n * @param {mat4} out the receiving matrix\r\n * @param {mat4} a the source matrix\r\n * @returns {mat4} out\r\n */\n\nexport function transpose(out, a) {\n // If we are transposing ourselves we can skip a few steps but have to cache some values\n if (out === a) {\n var a01 = a[1],\n a02 = a[2],\n a03 = a[3];\n var a12 = a[6],\n a13 = a[7];\n var a23 = a[11];\n out[1] = a[4];\n out[2] = a[8];\n out[3] = a[12];\n out[4] = a01;\n out[6] = a[9];\n out[7] = a[13];\n out[8] = a02;\n out[9] = a12;\n out[11] = a[14];\n out[12] = a03;\n out[13] = a13;\n out[14] = a23;\n } else {\n out[0] = a[0];\n out[1] = a[4];\n out[2] = a[8];\n out[3] = a[12];\n out[4] = a[1];\n out[5] = a[5];\n out[6] = a[9];\n out[7] = a[13];\n out[8] = a[2];\n out[9] = a[6];\n out[10] = a[10];\n out[11] = a[14];\n out[12] = a[3];\n out[13] = a[7];\n out[14] = a[11];\n out[15] = a[15];\n }\n\n return out;\n}\n/**\r\n * Inverts a mat4\r\n *\r\n * @param {mat4} out the receiving matrix\r\n * @param {mat4} a the source matrix\r\n * @returns {mat4} out\r\n */\n\nexport function invert(out, a) {\n var a00 = a[0],\n a01 = a[1],\n a02 = a[2],\n a03 = a[3];\n var a10 = a[4],\n a11 = a[5],\n a12 = a[6],\n a13 = a[7];\n var a20 = a[8],\n a21 = a[9],\n a22 = a[10],\n a23 = a[11];\n var a30 = a[12],\n a31 = a[13],\n a32 = a[14],\n a33 = a[15];\n var b00 = a00 * a11 - a01 * a10;\n var b01 = a00 * a12 - a02 * a10;\n var b02 = a00 * a13 - a03 * a10;\n var b03 = a01 * a12 - a02 * a11;\n var b04 = a01 * a13 - a03 * a11;\n var b05 = a02 * a13 - a03 * a12;\n var b06 = a20 * a31 - a21 * a30;\n var b07 = a20 * a32 - a22 * a30;\n var b08 = a20 * a33 - a23 * a30;\n var b09 = a21 * a32 - a22 * a31;\n var b10 = a21 * a33 - a23 * a31;\n var b11 = a22 * a33 - a23 * a32; // Calculate the determinant\n\n var det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;\n\n if (!det) {\n return null;\n }\n\n det = 1.0 / det;\n out[0] = (a11 * b11 - a12 * b10 + a13 * b09) * det;\n out[1] = (a02 * b10 - a01 * b11 - a03 * b09) * det;\n out[2] = (a31 * b05 - a32 * b04 + a33 * b03) * det;\n out[3] = (a22 * b04 - a21 * b05 - a23 * b03) * det;\n out[4] = (a12 * b08 - a10 * b11 - a13 * b07) * det;\n out[5] = (a00 * b11 - a02 * b08 + a03 * b07) * det;\n out[6] = (a32 * b02 - a30 * b05 - a33 * b01) * det;\n out[7] = (a20 * b05 - a22 * b02 + a23 * b01) * det;\n out[8] = (a10 * b10 - a11 * b08 + a13 * b06) * det;\n out[9] = (a01 * b08 - a00 * b10 - a03 * b06) * det;\n out[10] = (a30 * b04 - a31 * b02 + a33 * b00) * det;\n out[11] = (a21 * b02 - a20 * b04 - a23 * b00) * det;\n out[12] = (a11 * b07 - a10 * b09 - a12 * b06) * det;\n out[13] = (a00 * b09 - a01 * b07 + a02 * b06) * det;\n out[14] = (a31 * b01 - a30 * b03 - a32 * b00) * det;\n out[15] = (a20 * b03 - a21 * b01 + a22 * b00) * det;\n return out;\n}\n/**\r\n * Calculates the adjugate of a mat4\r\n *\r\n * @param {mat4} out the receiving matrix\r\n * @param {mat4} a the source matrix\r\n * @returns {mat4} out\r\n */\n\nexport function adjoint(out, a) {\n var a00 = a[0],\n a01 = a[1],\n a02 = a[2],\n a03 = a[3];\n var a10 = a[4],\n a11 = a[5],\n a12 = a[6],\n a13 = a[7];\n var a20 = a[8],\n a21 = a[9],\n a22 = a[10],\n a23 = a[11];\n var a30 = a[12],\n a31 = a[13],\n a32 = a[14],\n a33 = a[15];\n out[0] = a11 * (a22 * a33 - a23 * a32) - a21 * (a12 * a33 - a13 * a32) + a31 * (a12 * a23 - a13 * a22);\n out[1] = -(a01 * (a22 * a33 - a23 * a32) - a21 * (a02 * a33 - a03 * a32) + a31 * (a02 * a23 - a03 * a22));\n out[2] = a01 * (a12 * a33 - a13 * a32) - a11 * (a02 * a33 - a03 * a32) + a31 * (a02 * a13 - a03 * a12);\n out[3] = -(a01 * (a12 * a23 - a13 * a22) - a11 * (a02 * a23 - a03 * a22) + a21 * (a02 * a13 - a03 * a12));\n out[4] = -(a10 * (a22 * a33 - a23 * a32) - a20 * (a12 * a33 - a13 * a32) + a30 * (a12 * a23 - a13 * a22));\n out[5] = a00 * (a22 * a33 - a23 * a32) - a20 * (a02 * a33 - a03 * a32) + a30 * (a02 * a23 - a03 * a22);\n out[6] = -(a00 * (a12 * a33 - a13 * a32) - a10 * (a02 * a33 - a03 * a32) + a30 * (a02 * a13 - a03 * a12));\n out[7] = a00 * (a12 * a23 - a13 * a22) - a10 * (a02 * a23 - a03 * a22) + a20 * (a02 * a13 - a03 * a12);\n out[8] = a10 * (a21 * a33 - a23 * a31) - a20 * (a11 * a33 - a13 * a31) + a30 * (a11 * a23 - a13 * a21);\n out[9] = -(a00 * (a21 * a33 - a23 * a31) - a20 * (a01 * a33 - a03 * a31) + a30 * (a01 * a23 - a03 * a21));\n out[10] = a00 * (a11 * a33 - a13 * a31) - a10 * (a01 * a33 - a03 * a31) + a30 * (a01 * a13 - a03 * a11);\n out[11] = -(a00 * (a11 * a23 - a13 * a21) - a10 * (a01 * a23 - a03 * a21) + a20 * (a01 * a13 - a03 * a11));\n out[12] = -(a10 * (a21 * a32 - a22 * a31) - a20 * (a11 * a32 - a12 * a31) + a30 * (a11 * a22 - a12 * a21));\n out[13] = a00 * (a21 * a32 - a22 * a31) - a20 * (a01 * a32 - a02 * a31) + a30 * (a01 * a22 - a02 * a21);\n out[14] = -(a00 * (a11 * a32 - a12 * a31) - a10 * (a01 * a32 - a02 * a31) + a30 * (a01 * a12 - a02 * a11));\n out[15] = a00 * (a11 * a22 - a12 * a21) - a10 * (a01 * a22 - a02 * a21) + a20 * (a01 * a12 - a02 * a11);\n return out;\n}\n/**\r\n * Calculates the determinant of a mat4\r\n *\r\n * @param {mat4} a the source matrix\r\n * @returns {Number} determinant of a\r\n */\n\nexport function determinant(a) {\n var a00 = a[0],\n a01 = a[1],\n a02 = a[2],\n a03 = a[3];\n var a10 = a[4],\n a11 = a[5],\n a12 = a[6],\n a13 = a[7];\n var a20 = a[8],\n a21 = a[9],\n a22 = a[10],\n a23 = a[11];\n var a30 = a[12],\n a31 = a[13],\n a32 = a[14],\n a33 = a[15];\n var b00 = a00 * a11 - a01 * a10;\n var b01 = a00 * a12 - a02 * a10;\n var b02 = a00 * a13 - a03 * a10;\n var b03 = a01 * a12 - a02 * a11;\n var b04 = a01 * a13 - a03 * a11;\n var b05 = a02 * a13 - a03 * a12;\n var b06 = a20 * a31 - a21 * a30;\n var b07 = a20 * a32 - a22 * a30;\n var b08 = a20 * a33 - a23 * a30;\n var b09 = a21 * a32 - a22 * a31;\n var b10 = a21 * a33 - a23 * a31;\n var b11 = a22 * a33 - a23 * a32; // Calculate the determinant\n\n return b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;\n}\n/**\r\n * Multiplies two mat4s\r\n *\r\n * @param {mat4} out the receiving matrix\r\n * @param {mat4} a the first operand\r\n * @param {mat4} b the second operand\r\n * @returns {mat4} out\r\n */\n\nexport function multiply(out, a, b) {\n var a00 = a[0],\n a01 = a[1],\n a02 = a[2],\n a03 = a[3];\n var a10 = a[4],\n a11 = a[5],\n a12 = a[6],\n a13 = a[7];\n var a20 = a[8],\n a21 = a[9],\n a22 = a[10],\n a23 = a[11];\n var a30 = a[12],\n a31 = a[13],\n a32 = a[14],\n a33 = a[15]; // Cache only the current line of the second matrix\n\n var b0 = b[0],\n b1 = b[1],\n b2 = b[2],\n b3 = b[3];\n out[0] = b0 * a00 + b1 * a10 + b2 * a20 + b3 * a30;\n out[1] = b0 * a01 + b1 * a11 + b2 * a21 + b3 * a31;\n out[2] = b0 * a02 + b1 * a12 + b2 * a22 + b3 * a32;\n out[3] = b0 * a03 + b1 * a13 + b2 * a23 + b3 * a33;\n b0 = b[4];\n b1 = b[5];\n b2 = b[6];\n b3 = b[7];\n out[4] = b0 * a00 + b1 * a10 + b2 * a20 + b3 * a30;\n out[5] = b0 * a01 + b1 * a11 + b2 * a21 + b3 * a31;\n out[6] = b0 * a02 + b1 * a12 + b2 * a22 + b3 * a32;\n out[7] = b0 * a03 + b1 * a13 + b2 * a23 + b3 * a33;\n b0 = b[8];\n b1 = b[9];\n b2 = b[10];\n b3 = b[11];\n out[8] = b0 * a00 + b1 * a10 + b2 * a20 + b3 * a30;\n out[9] = b0 * a01 + b1 * a11 + b2 * a21 + b3 * a31;\n out[10] = b0 * a02 + b1 * a12 + b2 * a22 + b3 * a32;\n out[11] = b0 * a03 + b1 * a13 + b2 * a23 + b3 * a33;\n b0 = b[12];\n b1 = b[13];\n b2 = b[14];\n b3 = b[15];\n out[12] = b0 * a00 + b1 * a10 + b2 * a20 + b3 * a30;\n out[13] = b0 * a01 + b1 * a11 + b2 * a21 + b3 * a31;\n out[14] = b0 * a02 + b1 * a12 + b2 * a22 + b3 * a32;\n out[15] = b0 * a03 + b1 * a13 + b2 * a23 + b3 * a33;\n return out;\n}\n/**\r\n * Translate a mat4 by the given vector\r\n *\r\n * @param {mat4} out the receiving matrix\r\n * @param {mat4} a the matrix to translate\r\n * @param {vec3} v vector to translate by\r\n * @returns {mat4} out\r\n */\n\nexport function translate(out, a, v) {\n var x = v[0],\n y = v[1],\n z = v[2];\n var a00, a01, a02, a03;\n var a10, a11, a12, a13;\n var a20, a21, a22, a23;\n\n if (a === out) {\n out[12] = a[0] * x + a[4] * y + a[8] * z + a[12];\n out[13] = a[1] * x + a[5] * y + a[9] * z + a[13];\n out[14] = a[2] * x + a[6] * y + a[10] * z + a[14];\n out[15] = a[3] * x + a[7] * y + a[11] * z + a[15];\n } else {\n a00 = a[0];\n a01 = a[1];\n a02 = a[2];\n a03 = a[3];\n a10 = a[4];\n a11 = a[5];\n a12 = a[6];\n a13 = a[7];\n a20 = a[8];\n a21 = a[9];\n a22 = a[10];\n a23 = a[11];\n out[0] = a00;\n out[1] = a01;\n out[2] = a02;\n out[3] = a03;\n out[4] = a10;\n out[5] = a11;\n out[6] = a12;\n out[7] = a13;\n out[8] = a20;\n out[9] = a21;\n out[10] = a22;\n out[11] = a23;\n out[12] = a00 * x + a10 * y + a20 * z + a[12];\n out[13] = a01 * x + a11 * y + a21 * z + a[13];\n out[14] = a02 * x + a12 * y + a22 * z + a[14];\n out[15] = a03 * x + a13 * y + a23 * z + a[15];\n }\n\n return out;\n}\n/**\r\n * Scales the mat4 by the dimensions in the given vec3 not using vectorization\r\n *\r\n * @param {mat4} out the receiving matrix\r\n * @param {mat4} a the matrix to scale\r\n * @param {vec3} v the vec3 to scale the matrix by\r\n * @returns {mat4} out\r\n **/\n\nexport function scale(out, a, v) {\n var x = v[0],\n y = v[1],\n z = v[2];\n out[0] = a[0] * x;\n out[1] = a[1] * x;\n out[2] = a[2] * x;\n out[3] = a[3] * x;\n out[4] = a[4] * y;\n out[5] = a[5] * y;\n out[6] = a[6] * y;\n out[7] = a[7] * y;\n out[8] = a[8] * z;\n out[9] = a[9] * z;\n out[10] = a[10] * z;\n out[11] = a[11] * z;\n out[12] = a[12];\n out[13] = a[13];\n out[14] = a[14];\n out[15] = a[15];\n return out;\n}\n/**\r\n * Rotates a mat4 by the given angle around the given axis\r\n *\r\n * @param {mat4} out the receiving matrix\r\n * @param {mat4} a the matrix to rotate\r\n * @param {Number} rad the angle to rotate the matrix by\r\n * @param {vec3} axis the axis to rotate around\r\n * @returns {mat4} out\r\n */\n\nexport function rotate(out, a, rad, axis) {\n var x = axis[0],\n y = axis[1],\n z = axis[2];\n var len = Math.hypot(x, y, z);\n var s, c, t;\n var a00, a01, a02, a03;\n var a10, a11, a12, a13;\n var a20, a21, a22, a23;\n var b00, b01, b02;\n var b10, b11, b12;\n var b20, b21, b22;\n\n if (len < glMatrix.EPSILON) {\n return null;\n }\n\n len = 1 / len;\n x *= len;\n y *= len;\n z *= len;\n s = Math.sin(rad);\n c = Math.cos(rad);\n t = 1 - c;\n a00 = a[0];\n a01 = a[1];\n a02 = a[2];\n a03 = a[3];\n a10 = a[4];\n a11 = a[5];\n a12 = a[6];\n a13 = a[7];\n a20 = a[8];\n a21 = a[9];\n a22 = a[10];\n a23 = a[11]; // Construct the elements of the rotation matrix\n\n b00 = x * x * t + c;\n b01 = y * x * t + z * s;\n b02 = z * x * t - y * s;\n b10 = x * y * t - z * s;\n b11 = y * y * t + c;\n b12 = z * y * t + x * s;\n b20 = x * z * t + y * s;\n b21 = y * z * t - x * s;\n b22 = z * z * t + c; // Perform rotation-specific matrix multiplication\n\n out[0] = a00 * b00 + a10 * b01 + a20 * b02;\n out[1] = a01 * b00 + a11 * b01 + a21 * b02;\n out[2] = a02 * b00 + a12 * b01 + a22 * b02;\n out[3] = a03 * b00 + a13 * b01 + a23 * b02;\n out[4] = a00 * b10 + a10 * b11 + a20 * b12;\n out[5] = a01 * b10 + a11 * b11 + a21 * b12;\n out[6] = a02 * b10 + a12 * b11 + a22 * b12;\n out[7] = a03 * b10 + a13 * b11 + a23 * b12;\n out[8] = a00 * b20 + a10 * b21 + a20 * b22;\n out[9] = a01 * b20 + a11 * b21 + a21 * b22;\n out[10] = a02 * b20 + a12 * b21 + a22 * b22;\n out[11] = a03 * b20 + a13 * b21 + a23 * b22;\n\n if (a !== out) {\n // If the source and destination differ, copy the unchanged last row\n out[12] = a[12];\n out[13] = a[13];\n out[14] = a[14];\n out[15] = a[15];\n }\n\n return out;\n}\n/**\r\n * Rotates a matrix by the given angle around the X axis\r\n *\r\n * @param {mat4} out the receiving matrix\r\n * @param {mat4} a the matrix to rotate\r\n * @param {Number} rad the angle to rotate the matrix by\r\n * @returns {mat4} out\r\n */\n\nexport function rotateX(out, a, rad) {\n var s = Math.sin(rad);\n var c = Math.cos(rad);\n var a10 = a[4];\n var a11 = a[5];\n var a12 = a[6];\n var a13 = a[7];\n var a20 = a[8];\n var a21 = a[9];\n var a22 = a[10];\n var a23 = a[11];\n\n if (a !== out) {\n // If the source and destination differ, copy the unchanged rows\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n out[3] = a[3];\n out[12] = a[12];\n out[13] = a[13];\n out[14] = a[14];\n out[15] = a[15];\n } // Perform axis-specific matrix multiplication\n\n\n out[4] = a10 * c + a20 * s;\n out[5] = a11 * c + a21 * s;\n out[6] = a12 * c + a22 * s;\n out[7] = a13 * c + a23 * s;\n out[8] = a20 * c - a10 * s;\n out[9] = a21 * c - a11 * s;\n out[10] = a22 * c - a12 * s;\n out[11] = a23 * c - a13 * s;\n return out;\n}\n/**\r\n * Rotates a matrix by the given angle around the Y axis\r\n *\r\n * @param {mat4} out the receiving matrix\r\n * @param {mat4} a the matrix to rotate\r\n * @param {Number} rad the angle to rotate the matrix by\r\n * @returns {mat4} out\r\n */\n\nexport function rotateY(out, a, rad) {\n var s = Math.sin(rad);\n var c = Math.cos(rad);\n var a00 = a[0];\n var a01 = a[1];\n var a02 = a[2];\n var a03 = a[3];\n var a20 = a[8];\n var a21 = a[9];\n var a22 = a[10];\n var a23 = a[11];\n\n if (a !== out) {\n // If the source and destination differ, copy the unchanged rows\n out[4] = a[4];\n out[5] = a[5];\n out[6] = a[6];\n out[7] = a[7];\n out[12] = a[12];\n out[13] = a[13];\n out[14] = a[14];\n out[15] = a[15];\n } // Perform axis-specific matrix multiplication\n\n\n out[0] = a00 * c - a20 * s;\n out[1] = a01 * c - a21 * s;\n out[2] = a02 * c - a22 * s;\n out[3] = a03 * c - a23 * s;\n out[8] = a00 * s + a20 * c;\n out[9] = a01 * s + a21 * c;\n out[10] = a02 * s + a22 * c;\n out[11] = a03 * s + a23 * c;\n return out;\n}\n/**\r\n * Rotates a matrix by the given angle around the Z axis\r\n *\r\n * @param {mat4} out the receiving matrix\r\n * @param {mat4} a the matrix to rotate\r\n * @param {Number} rad the angle to rotate the matrix by\r\n * @returns {mat4} out\r\n */\n\nexport function rotateZ(out, a, rad) {\n var s = Math.sin(rad);\n var c = Math.cos(rad);\n var a00 = a[0];\n var a01 = a[1];\n var a02 = a[2];\n var a03 = a[3];\n var a10 = a[4];\n var a11 = a[5];\n var a12 = a[6];\n var a13 = a[7];\n\n if (a !== out) {\n // If the source and destination differ, copy the unchanged last row\n out[8] = a[8];\n out[9] = a[9];\n out[10] = a[10];\n out[11] = a[11];\n out[12] = a[12];\n out[13] = a[13];\n out[14] = a[14];\n out[15] = a[15];\n } // Perform axis-specific matrix multiplication\n\n\n out[0] = a00 * c + a10 * s;\n out[1] = a01 * c + a11 * s;\n out[2] = a02 * c + a12 * s;\n out[3] = a03 * c + a13 * s;\n out[4] = a10 * c - a00 * s;\n out[5] = a11 * c - a01 * s;\n out[6] = a12 * c - a02 * s;\n out[7] = a13 * c - a03 * s;\n return out;\n}\n/**\r\n * Creates a matrix from a vector translation\r\n * This is equivalent to (but much faster than):\r\n *\r\n * mat4.identity(dest);\r\n * mat4.translate(dest, dest, vec);\r\n *\r\n * @param {mat4} out mat4 receiving operation result\r\n * @param {vec3} v Translation vector\r\n * @returns {mat4} out\r\n */\n\nexport function fromTranslation(out, v) {\n out[0] = 1;\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = 0;\n out[5] = 1;\n out[6] = 0;\n out[7] = 0;\n out[8] = 0;\n out[9] = 0;\n out[10] = 1;\n out[11] = 0;\n out[12] = v[0];\n out[13] = v[1];\n out[14] = v[2];\n out[15] = 1;\n return out;\n}\n/**\r\n * Creates a matrix from a vector scaling\r\n * This is equivalent to (but much faster than):\r\n *\r\n * mat4.identity(dest);\r\n * mat4.scale(dest, dest, vec);\r\n *\r\n * @param {mat4} out mat4 receiving operation result\r\n * @param {vec3} v Scaling vector\r\n * @returns {mat4} out\r\n */\n\nexport function fromScaling(out, v) {\n out[0] = v[0];\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = 0;\n out[5] = v[1];\n out[6] = 0;\n out[7] = 0;\n out[8] = 0;\n out[9] = 0;\n out[10] = v[2];\n out[11] = 0;\n out[12] = 0;\n out[13] = 0;\n out[14] = 0;\n out[15] = 1;\n return out;\n}\n/**\r\n * Creates a matrix from a given angle around a given axis\r\n * This is equivalent to (but much faster than):\r\n *\r\n * mat4.identity(dest);\r\n * mat4.rotate(dest, dest, rad, axis);\r\n *\r\n * @param {mat4} out mat4 receiving operation result\r\n * @param {Number} rad the angle to rotate the matrix by\r\n * @param {vec3} axis the axis to rotate around\r\n * @returns {mat4} out\r\n */\n\nexport function fromRotation(out, rad, axis) {\n var x = axis[0],\n y = axis[1],\n z = axis[2];\n var len = Math.hypot(x, y, z);\n var s, c, t;\n\n if (len < glMatrix.EPSILON) {\n return null;\n }\n\n len = 1 / len;\n x *= len;\n y *= len;\n z *= len;\n s = Math.sin(rad);\n c = Math.cos(rad);\n t = 1 - c; // Perform rotation-specific matrix multiplication\n\n out[0] = x * x * t + c;\n out[1] = y * x * t + z * s;\n out[2] = z * x * t - y * s;\n out[3] = 0;\n out[4] = x * y * t - z * s;\n out[5] = y * y * t + c;\n out[6] = z * y * t + x * s;\n out[7] = 0;\n out[8] = x * z * t + y * s;\n out[9] = y * z * t - x * s;\n out[10] = z * z * t + c;\n out[11] = 0;\n out[12] = 0;\n out[13] = 0;\n out[14] = 0;\n out[15] = 1;\n return out;\n}\n/**\r\n * Creates a matrix from the given angle around the X axis\r\n * This is equivalent to (but much faster than):\r\n *\r\n * mat4.identity(dest);\r\n * mat4.rotateX(dest, dest, rad);\r\n *\r\n * @param {mat4} out mat4 receiving operation result\r\n * @param {Number} rad the angle to rotate the matrix by\r\n * @returns {mat4} out\r\n */\n\nexport function fromXRotation(out, rad) {\n var s = Math.sin(rad);\n var c = Math.cos(rad); // Perform axis-specific matrix multiplication\n\n out[0] = 1;\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = 0;\n out[5] = c;\n out[6] = s;\n out[7] = 0;\n out[8] = 0;\n out[9] = -s;\n out[10] = c;\n out[11] = 0;\n out[12] = 0;\n out[13] = 0;\n out[14] = 0;\n out[15] = 1;\n return out;\n}\n/**\r\n * Creates a matrix from the given angle around the Y axis\r\n * This is equivalent to (but much faster than):\r\n *\r\n * mat4.identity(dest);\r\n * mat4.rotateY(dest, dest, rad);\r\n *\r\n * @param {mat4} out mat4 receiving operation result\r\n * @param {Number} rad the angle to rotate the matrix by\r\n * @returns {mat4} out\r\n */\n\nexport function fromYRotation(out, rad) {\n var s = Math.sin(rad);\n var c = Math.cos(rad); // Perform axis-specific matrix multiplication\n\n out[0] = c;\n out[1] = 0;\n out[2] = -s;\n out[3] = 0;\n out[4] = 0;\n out[5] = 1;\n out[6] = 0;\n out[7] = 0;\n out[8] = s;\n out[9] = 0;\n out[10] = c;\n out[11] = 0;\n out[12] = 0;\n out[13] = 0;\n out[14] = 0;\n out[15] = 1;\n return out;\n}\n/**\r\n * Creates a matrix from the given angle around the Z axis\r\n * This is equivalent to (but much faster than):\r\n *\r\n * mat4.identity(dest);\r\n * mat4.rotateZ(dest, dest, rad);\r\n *\r\n * @param {mat4} out mat4 receiving operation result\r\n * @param {Number} rad the angle to rotate the matrix by\r\n * @returns {mat4} out\r\n */\n\nexport function fromZRotation(out, rad) {\n var s = Math.sin(rad);\n var c = Math.cos(rad); // Perform axis-specific matrix multiplication\n\n out[0] = c;\n out[1] = s;\n out[2] = 0;\n out[3] = 0;\n out[4] = -s;\n out[5] = c;\n out[6] = 0;\n out[7] = 0;\n out[8] = 0;\n out[9] = 0;\n out[10] = 1;\n out[11] = 0;\n out[12] = 0;\n out[13] = 0;\n out[14] = 0;\n out[15] = 1;\n return out;\n}\n/**\r\n * Creates a matrix from a quaternion rotation and vector translation\r\n * This is equivalent to (but much faster than):\r\n *\r\n * mat4.identity(dest);\r\n * mat4.translate(dest, vec);\r\n * let quatMat = mat4.create();\r\n * quat4.toMat4(quat, quatMat);\r\n * mat4.multiply(dest, quatMat);\r\n *\r\n * @param {mat4} out mat4 receiving operation result\r\n * @param {quat4} q Rotation quaternion\r\n * @param {vec3} v Translation vector\r\n * @returns {mat4} out\r\n */\n\nexport function fromRotationTranslation(out, q, v) {\n // Quaternion math\n var x = q[0],\n y = q[1],\n z = q[2],\n w = q[3];\n var x2 = x + x;\n var y2 = y + y;\n var z2 = z + z;\n var xx = x * x2;\n var xy = x * y2;\n var xz = x * z2;\n var yy = y * y2;\n var yz = y * z2;\n var zz = z * z2;\n var wx = w * x2;\n var wy = w * y2;\n var wz = w * z2;\n out[0] = 1 - (yy + zz);\n out[1] = xy + wz;\n out[2] = xz - wy;\n out[3] = 0;\n out[4] = xy - wz;\n out[5] = 1 - (xx + zz);\n out[6] = yz + wx;\n out[7] = 0;\n out[8] = xz + wy;\n out[9] = yz - wx;\n out[10] = 1 - (xx + yy);\n out[11] = 0;\n out[12] = v[0];\n out[13] = v[1];\n out[14] = v[2];\n out[15] = 1;\n return out;\n}\n/**\r\n * Creates a new mat4 from a dual quat.\r\n *\r\n * @param {mat4} out Matrix\r\n * @param {quat2} a Dual Quaternion\r\n * @returns {mat4} mat4 receiving operation result\r\n */\n\nexport function fromQuat2(out, a) {\n var translation = new glMatrix.ARRAY_TYPE(3);\n var bx = -a[0],\n by = -a[1],\n bz = -a[2],\n bw = a[3],\n ax = a[4],\n ay = a[5],\n az = a[6],\n aw = a[7];\n var magnitude = bx * bx + by * by + bz * bz + bw * bw; //Only scale if it makes sense\n\n if (magnitude > 0) {\n translation[0] = (ax * bw + aw * bx + ay * bz - az * by) * 2 / magnitude;\n translation[1] = (ay * bw + aw * by + az * bx - ax * bz) * 2 / magnitude;\n translation[2] = (az * bw + aw * bz + ax * by - ay * bx) * 2 / magnitude;\n } else {\n translation[0] = (ax * bw + aw * bx + ay * bz - az * by) * 2;\n translation[1] = (ay * bw + aw * by + az * bx - ax * bz) * 2;\n translation[2] = (az * bw + aw * bz + ax * by - ay * bx) * 2;\n }\n\n fromRotationTranslation(out, a, translation);\n return out;\n}\n/**\r\n * Returns the translation vector component of a transformation\r\n * matrix. If a matrix is built with fromRotationTranslation,\r\n * the returned vector will be the same as the translation vector\r\n * originally supplied.\r\n * @param {vec3} out Vector to receive translation component\r\n * @param {mat4} mat Matrix to be decomposed (input)\r\n * @return {vec3} out\r\n */\n\nexport function getTranslation(out, mat) {\n out[0] = mat[12];\n out[1] = mat[13];\n out[2] = mat[14];\n return out;\n}\n/**\r\n * Returns the scaling factor component of a transformation\r\n * matrix. If a matrix is built with fromRotationTranslationScale\r\n * with a normalized Quaternion paramter, the returned vector will be\r\n * the same as the scaling vector\r\n * originally supplied.\r\n * @param {vec3} out Vector to receive scaling factor component\r\n * @param {mat4} mat Matrix to be decomposed (input)\r\n * @return {vec3} out\r\n */\n\nexport function getScaling(out, mat) {\n var m11 = mat[0];\n var m12 = mat[1];\n var m13 = mat[2];\n var m21 = mat[4];\n var m22 = mat[5];\n var m23 = mat[6];\n var m31 = mat[8];\n var m32 = mat[9];\n var m33 = mat[10];\n out[0] = Math.hypot(m11, m12, m13);\n out[1] = Math.hypot(m21, m22, m23);\n out[2] = Math.hypot(m31, m32, m33);\n return out;\n}\n/**\r\n * Returns a quaternion representing the rotational component\r\n * of a transformation matrix. If a matrix is built with\r\n * fromRotationTranslation, the returned quaternion will be the\r\n * same as the quaternion originally supplied.\r\n * @param {quat} out Quaternion to receive the rotation component\r\n * @param {mat4} mat Matrix to be decomposed (input)\r\n * @return {quat} out\r\n */\n\nexport function getRotation(out, mat) {\n var scaling = new glMatrix.ARRAY_TYPE(3);\n getScaling(scaling, mat);\n var is1 = 1 / scaling[0];\n var is2 = 1 / scaling[1];\n var is3 = 1 / scaling[2];\n var sm11 = mat[0] * is1;\n var sm12 = mat[1] * is2;\n var sm13 = mat[2] * is3;\n var sm21 = mat[4] * is1;\n var sm22 = mat[5] * is2;\n var sm23 = mat[6] * is3;\n var sm31 = mat[8] * is1;\n var sm32 = mat[9] * is2;\n var sm33 = mat[10] * is3;\n var trace = sm11 + sm22 + sm33;\n var S = 0;\n\n if (trace > 0) {\n S = Math.sqrt(trace + 1.0) * 2;\n out[3] = 0.25 * S;\n out[0] = (sm23 - sm32) / S;\n out[1] = (sm31 - sm13) / S;\n out[2] = (sm12 - sm21) / S;\n } else if (sm11 > sm22 && sm11 > sm33) {\n S = Math.sqrt(1.0 + sm11 - sm22 - sm33) * 2;\n out[3] = (sm23 - sm32) / S;\n out[0] = 0.25 * S;\n out[1] = (sm12 + sm21) / S;\n out[2] = (sm31 + sm13) / S;\n } else if (sm22 > sm33) {\n S = Math.sqrt(1.0 + sm22 - sm11 - sm33) * 2;\n out[3] = (sm31 - sm13) / S;\n out[0] = (sm12 + sm21) / S;\n out[1] = 0.25 * S;\n out[2] = (sm23 + sm32) / S;\n } else {\n S = Math.sqrt(1.0 + sm33 - sm11 - sm22) * 2;\n out[3] = (sm12 - sm21) / S;\n out[0] = (sm31 + sm13) / S;\n out[1] = (sm23 + sm32) / S;\n out[2] = 0.25 * S;\n }\n\n return out;\n}\n/**\r\n * Creates a matrix from a quaternion rotation, vector translation and vector scale\r\n * This is equivalent to (but much faster than):\r\n *\r\n * mat4.identity(dest);\r\n * mat4.translate(dest, vec);\r\n * let quatMat = mat4.create();\r\n * quat4.toMat4(quat, quatMat);\r\n * mat4.multiply(dest, quatMat);\r\n * mat4.scale(dest, scale)\r\n *\r\n * @param {mat4} out mat4 receiving operation result\r\n * @param {quat4} q Rotation quaternion\r\n * @param {vec3} v Translation vector\r\n * @param {vec3} s Scaling vector\r\n * @returns {mat4} out\r\n */\n\nexport function fromRotationTranslationScale(out, q, v, s) {\n // Quaternion math\n var x = q[0],\n y = q[1],\n z = q[2],\n w = q[3];\n var x2 = x + x;\n var y2 = y + y;\n var z2 = z + z;\n var xx = x * x2;\n var xy = x * y2;\n var xz = x * z2;\n var yy = y * y2;\n var yz = y * z2;\n var zz = z * z2;\n var wx = w * x2;\n var wy = w * y2;\n var wz = w * z2;\n var sx = s[0];\n var sy = s[1];\n var sz = s[2];\n out[0] = (1 - (yy + zz)) * sx;\n out[1] = (xy + wz) * sx;\n out[2] = (xz - wy) * sx;\n out[3] = 0;\n out[4] = (xy - wz) * sy;\n out[5] = (1 - (xx + zz)) * sy;\n out[6] = (yz + wx) * sy;\n out[7] = 0;\n out[8] = (xz + wy) * sz;\n out[9] = (yz - wx) * sz;\n out[10] = (1 - (xx + yy)) * sz;\n out[11] = 0;\n out[12] = v[0];\n out[13] = v[1];\n out[14] = v[2];\n out[15] = 1;\n return out;\n}\n/**\r\n * Creates a matrix from a quaternion rotation, vector translation and vector scale, rotating and scaling around the given origin\r\n * This is equivalent to (but much faster than):\r\n *\r\n * mat4.identity(dest);\r\n * mat4.translate(dest, vec);\r\n * mat4.translate(dest, origin);\r\n * let quatMat = mat4.create();\r\n * quat4.toMat4(quat, quatMat);\r\n * mat4.multiply(dest, quatMat);\r\n * mat4.scale(dest, scale)\r\n * mat4.translate(dest, negativeOrigin);\r\n *\r\n * @param {mat4} out mat4 receiving operation result\r\n * @param {quat4} q Rotation quaternion\r\n * @param {vec3} v Translation vector\r\n * @param {vec3} s Scaling vector\r\n * @param {vec3} o The origin vector around which to scale and rotate\r\n * @returns {mat4} out\r\n */\n\nexport function fromRotationTranslationScaleOrigin(out, q, v, s, o) {\n // Quaternion math\n var x = q[0],\n y = q[1],\n z = q[2],\n w = q[3];\n var x2 = x + x;\n var y2 = y + y;\n var z2 = z + z;\n var xx = x * x2;\n var xy = x * y2;\n var xz = x * z2;\n var yy = y * y2;\n var yz = y * z2;\n var zz = z * z2;\n var wx = w * x2;\n var wy = w * y2;\n var wz = w * z2;\n var sx = s[0];\n var sy = s[1];\n var sz = s[2];\n var ox = o[0];\n var oy = o[1];\n var oz = o[2];\n var out0 = (1 - (yy + zz)) * sx;\n var out1 = (xy + wz) * sx;\n var out2 = (xz - wy) * sx;\n var out4 = (xy - wz) * sy;\n var out5 = (1 - (xx + zz)) * sy;\n var out6 = (yz + wx) * sy;\n var out8 = (xz + wy) * sz;\n var out9 = (yz - wx) * sz;\n var out10 = (1 - (xx + yy)) * sz;\n out[0] = out0;\n out[1] = out1;\n out[2] = out2;\n out[3] = 0;\n out[4] = out4;\n out[5] = out5;\n out[6] = out6;\n out[7] = 0;\n out[8] = out8;\n out[9] = out9;\n out[10] = out10;\n out[11] = 0;\n out[12] = v[0] + ox - (out0 * ox + out4 * oy + out8 * oz);\n out[13] = v[1] + oy - (out1 * ox + out5 * oy + out9 * oz);\n out[14] = v[2] + oz - (out2 * ox + out6 * oy + out10 * oz);\n out[15] = 1;\n return out;\n}\n/**\r\n * Calculates a 4x4 matrix from the given quaternion\r\n *\r\n * @param {mat4} out mat4 receiving operation result\r\n * @param {quat} q Quaternion to create matrix from\r\n *\r\n * @returns {mat4} out\r\n */\n\nexport function fromQuat(out, q) {\n var x = q[0],\n y = q[1],\n z = q[2],\n w = q[3];\n var x2 = x + x;\n var y2 = y + y;\n var z2 = z + z;\n var xx = x * x2;\n var yx = y * x2;\n var yy = y * y2;\n var zx = z * x2;\n var zy = z * y2;\n var zz = z * z2;\n var wx = w * x2;\n var wy = w * y2;\n var wz = w * z2;\n out[0] = 1 - yy - zz;\n out[1] = yx + wz;\n out[2] = zx - wy;\n out[3] = 0;\n out[4] = yx - wz;\n out[5] = 1 - xx - zz;\n out[6] = zy + wx;\n out[7] = 0;\n out[8] = zx + wy;\n out[9] = zy - wx;\n out[10] = 1 - xx - yy;\n out[11] = 0;\n out[12] = 0;\n out[13] = 0;\n out[14] = 0;\n out[15] = 1;\n return out;\n}\n/**\r\n * Generates a frustum matrix with the given bounds\r\n *\r\n * @param {mat4} out mat4 frustum matrix will be written into\r\n * @param {Number} left Left bound of the frustum\r\n * @param {Number} right Right bound of the frustum\r\n * @param {Number} bottom Bottom bound of the frustum\r\n * @param {Number} top Top bound of the frustum\r\n * @param {Number} near Near bound of the frustum\r\n * @param {Number} far Far bound of the frustum\r\n * @returns {mat4} out\r\n */\n\nexport function frustum(out, left, right, bottom, top, near, far) {\n var rl = 1 / (right - left);\n var tb = 1 / (top - bottom);\n var nf = 1 / (near - far);\n out[0] = near * 2 * rl;\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = 0;\n out[5] = near * 2 * tb;\n out[6] = 0;\n out[7] = 0;\n out[8] = (right + left) * rl;\n out[9] = (top + bottom) * tb;\n out[10] = (far + near) * nf;\n out[11] = -1;\n out[12] = 0;\n out[13] = 0;\n out[14] = far * near * 2 * nf;\n out[15] = 0;\n return out;\n}\n/**\r\n * Generates a perspective projection matrix with the given bounds.\r\n * Passing null/undefined/no value for far will generate infinite projection matrix.\r\n *\r\n * @param {mat4} out mat4 frustum matrix will be written into\r\n * @param {number} fovy Vertical field of view in radians\r\n * @param {number} aspect Aspect ratio. typically viewport width/height\r\n * @param {number} near Near bound of the frustum\r\n * @param {number} far Far bound of the frustum, can be null or Infinity\r\n * @returns {mat4} out\r\n */\n\nexport function perspective(out, fovy, aspect, near, far) {\n var f = 1.0 / Math.tan(fovy / 2),\n nf;\n out[0] = f / aspect;\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = 0;\n out[5] = f;\n out[6] = 0;\n out[7] = 0;\n out[8] = 0;\n out[9] = 0;\n out[11] = -1;\n out[12] = 0;\n out[13] = 0;\n out[15] = 0;\n\n if (far != null && far !== Infinity) {\n nf = 1 / (near - far);\n out[10] = (far + near) * nf;\n out[14] = 2 * far * near * nf;\n } else {\n out[10] = -1;\n out[14] = -2 * near;\n }\n\n return out;\n}\n/**\r\n * Generates a perspective projection matrix with the given field of view.\r\n * This is primarily useful for generating projection matrices to be used\r\n * with the still experiemental WebVR API.\r\n *\r\n * @param {mat4} out mat4 frustum matrix will be written into\r\n * @param {Object} fov Object containing the following values: upDegrees, downDegrees, leftDegrees, rightDegrees\r\n * @param {number} near Near bound of the frustum\r\n * @param {number} far Far bound of the frustum\r\n * @returns {mat4} out\r\n */\n\nexport function perspectiveFromFieldOfView(out, fov, near, far) {\n var upTan = Math.tan(fov.upDegrees * Math.PI / 180.0);\n var downTan = Math.tan(fov.downDegrees * Math.PI / 180.0);\n var leftTan = Math.tan(fov.leftDegrees * Math.PI / 180.0);\n var rightTan = Math.tan(fov.rightDegrees * Math.PI / 180.0);\n var xScale = 2.0 / (leftTan + rightTan);\n var yScale = 2.0 / (upTan + downTan);\n out[0] = xScale;\n out[1] = 0.0;\n out[2] = 0.0;\n out[3] = 0.0;\n out[4] = 0.0;\n out[5] = yScale;\n out[6] = 0.0;\n out[7] = 0.0;\n out[8] = -((leftTan - rightTan) * xScale * 0.5);\n out[9] = (upTan - downTan) * yScale * 0.5;\n out[10] = far / (near - far);\n out[11] = -1.0;\n out[12] = 0.0;\n out[13] = 0.0;\n out[14] = far * near / (near - far);\n out[15] = 0.0;\n return out;\n}\n/**\r\n * Generates a orthogonal projection matrix with the given bounds\r\n *\r\n * @param {mat4} out mat4 frustum matrix will be written into\r\n * @param {number} left Left bound of the frustum\r\n * @param {number} right Right bound of the frustum\r\n * @param {number} bottom Bottom bound of the frustum\r\n * @param {number} top Top bound of the frustum\r\n * @param {number} near Near bound of the frustum\r\n * @param {number} far Far bound of the frustum\r\n * @returns {mat4} out\r\n */\n\nexport function ortho(out, left, right, bottom, top, near, far) {\n var lr = 1 / (left - right);\n var bt = 1 / (bottom - top);\n var nf = 1 / (near - far);\n out[0] = -2 * lr;\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = 0;\n out[5] = -2 * bt;\n out[6] = 0;\n out[7] = 0;\n out[8] = 0;\n out[9] = 0;\n out[10] = 2 * nf;\n out[11] = 0;\n out[12] = (left + right) * lr;\n out[13] = (top + bottom) * bt;\n out[14] = (far + near) * nf;\n out[15] = 1;\n return out;\n}\n/**\r\n * Generates a look-at matrix with the given eye position, focal point, and up axis.\r\n * If you want a matrix that actually makes an object look at another object, you should use targetTo instead.\r\n *\r\n * @param {mat4} out mat4 frustum matrix will be written into\r\n * @param {vec3} eye Position of the viewer\r\n * @param {vec3} center Point the viewer is looking at\r\n * @param {vec3} up vec3 pointing up\r\n * @returns {mat4} out\r\n */\n\nexport function lookAt(out, eye, center, up) {\n var x0, x1, x2, y0, y1, y2, z0, z1, z2, len;\n var eyex = eye[0];\n var eyey = eye[1];\n var eyez = eye[2];\n var upx = up[0];\n var upy = up[1];\n var upz = up[2];\n var centerx = center[0];\n var centery = center[1];\n var centerz = center[2];\n\n if (Math.abs(eyex - centerx) < glMatrix.EPSILON && Math.abs(eyey - centery) < glMatrix.EPSILON && Math.abs(eyez - centerz) < glMatrix.EPSILON) {\n return identity(out);\n }\n\n z0 = eyex - centerx;\n z1 = eyey - centery;\n z2 = eyez - centerz;\n len = 1 / Math.hypot(z0, z1, z2);\n z0 *= len;\n z1 *= len;\n z2 *= len;\n x0 = upy * z2 - upz * z1;\n x1 = upz * z0 - upx * z2;\n x2 = upx * z1 - upy * z0;\n len = Math.hypot(x0, x1, x2);\n\n if (!len) {\n x0 = 0;\n x1 = 0;\n x2 = 0;\n } else {\n len = 1 / len;\n x0 *= len;\n x1 *= len;\n x2 *= len;\n }\n\n y0 = z1 * x2 - z2 * x1;\n y1 = z2 * x0 - z0 * x2;\n y2 = z0 * x1 - z1 * x0;\n len = Math.hypot(y0, y1, y2);\n\n if (!len) {\n y0 = 0;\n y1 = 0;\n y2 = 0;\n } else {\n len = 1 / len;\n y0 *= len;\n y1 *= len;\n y2 *= len;\n }\n\n out[0] = x0;\n out[1] = y0;\n out[2] = z0;\n out[3] = 0;\n out[4] = x1;\n out[5] = y1;\n out[6] = z1;\n out[7] = 0;\n out[8] = x2;\n out[9] = y2;\n out[10] = z2;\n out[11] = 0;\n out[12] = -(x0 * eyex + x1 * eyey + x2 * eyez);\n out[13] = -(y0 * eyex + y1 * eyey + y2 * eyez);\n out[14] = -(z0 * eyex + z1 * eyey + z2 * eyez);\n out[15] = 1;\n return out;\n}\n/**\r\n * Generates a matrix that makes something look at something else.\r\n *\r\n * @param {mat4} out mat4 frustum matrix will be written into\r\n * @param {vec3} eye Position of the viewer\r\n * @param {vec3} center Point the viewer is looking at\r\n * @param {vec3} up vec3 pointing up\r\n * @returns {mat4} out\r\n */\n\nexport function targetTo(out, eye, target, up) {\n var eyex = eye[0],\n eyey = eye[1],\n eyez = eye[2],\n upx = up[0],\n upy = up[1],\n upz = up[2];\n var z0 = eyex - target[0],\n z1 = eyey - target[1],\n z2 = eyez - target[2];\n var len = z0 * z0 + z1 * z1 + z2 * z2;\n\n if (len > 0) {\n len = 1 / Math.sqrt(len);\n z0 *= len;\n z1 *= len;\n z2 *= len;\n }\n\n var x0 = upy * z2 - upz * z1,\n x1 = upz * z0 - upx * z2,\n x2 = upx * z1 - upy * z0;\n len = x0 * x0 + x1 * x1 + x2 * x2;\n\n if (len > 0) {\n len = 1 / Math.sqrt(len);\n x0 *= len;\n x1 *= len;\n x2 *= len;\n }\n\n out[0] = x0;\n out[1] = x1;\n out[2] = x2;\n out[3] = 0;\n out[4] = z1 * x2 - z2 * x1;\n out[5] = z2 * x0 - z0 * x2;\n out[6] = z0 * x1 - z1 * x0;\n out[7] = 0;\n out[8] = z0;\n out[9] = z1;\n out[10] = z2;\n out[11] = 0;\n out[12] = eyex;\n out[13] = eyey;\n out[14] = eyez;\n out[15] = 1;\n return out;\n}\n/**\r\n * Returns a string representation of a mat4\r\n *\r\n * @param {mat4} a matrix to represent as a string\r\n * @returns {String} string representation of the matrix\r\n */\n\nexport function str(a) {\n return \"mat4(\" + a[0] + \", \" + a[1] + \", \" + a[2] + \", \" + a[3] + \", \" + a[4] + \", \" + a[5] + \", \" + a[6] + \", \" + a[7] + \", \" + a[8] + \", \" + a[9] + \", \" + a[10] + \", \" + a[11] + \", \" + a[12] + \", \" + a[13] + \", \" + a[14] + \", \" + a[15] + \")\";\n}\n/**\r\n * Returns Frobenius norm of a mat4\r\n *\r\n * @param {mat4} a the matrix to calculate Frobenius norm of\r\n * @returns {Number} Frobenius norm\r\n */\n\nexport function frob(a) {\n return Math.hypot(a[0], a[1], a[2], a[3], a[4], a[5], a[6], a[7], a[8], a[9], a[10], a[11], a[12], a[13], a[14], a[15]);\n}\n/**\r\n * Adds two mat4's\r\n *\r\n * @param {mat4} out the receiving matrix\r\n * @param {mat4} a the first operand\r\n * @param {mat4} b the second operand\r\n * @returns {mat4} out\r\n */\n\nexport function add(out, a, b) {\n out[0] = a[0] + b[0];\n out[1] = a[1] + b[1];\n out[2] = a[2] + b[2];\n out[3] = a[3] + b[3];\n out[4] = a[4] + b[4];\n out[5] = a[5] + b[5];\n out[6] = a[6] + b[6];\n out[7] = a[7] + b[7];\n out[8] = a[8] + b[8];\n out[9] = a[9] + b[9];\n out[10] = a[10] + b[10];\n out[11] = a[11] + b[11];\n out[12] = a[12] + b[12];\n out[13] = a[13] + b[13];\n out[14] = a[14] + b[14];\n out[15] = a[15] + b[15];\n return out;\n}\n/**\r\n * Subtracts matrix b from matrix a\r\n *\r\n * @param {mat4} out the receiving matrix\r\n * @param {mat4} a the first operand\r\n * @param {mat4} b the second operand\r\n * @returns {mat4} out\r\n */\n\nexport function subtract(out, a, b) {\n out[0] = a[0] - b[0];\n out[1] = a[1] - b[1];\n out[2] = a[2] - b[2];\n out[3] = a[3] - b[3];\n out[4] = a[4] - b[4];\n out[5] = a[5] - b[5];\n out[6] = a[6] - b[6];\n out[7] = a[7] - b[7];\n out[8] = a[8] - b[8];\n out[9] = a[9] - b[9];\n out[10] = a[10] - b[10];\n out[11] = a[11] - b[11];\n out[12] = a[12] - b[12];\n out[13] = a[13] - b[13];\n out[14] = a[14] - b[14];\n out[15] = a[15] - b[15];\n return out;\n}\n/**\r\n * Multiply each element of the matrix by a scalar.\r\n *\r\n * @param {mat4} out the receiving matrix\r\n * @param {mat4} a the matrix to scale\r\n * @param {Number} b amount to scale the matrix's elements by\r\n * @returns {mat4} out\r\n */\n\nexport function multiplyScalar(out, a, b) {\n out[0] = a[0] * b;\n out[1] = a[1] * b;\n out[2] = a[2] * b;\n out[3] = a[3] * b;\n out[4] = a[4] * b;\n out[5] = a[5] * b;\n out[6] = a[6] * b;\n out[7] = a[7] * b;\n out[8] = a[8] * b;\n out[9] = a[9] * b;\n out[10] = a[10] * b;\n out[11] = a[11] * b;\n out[12] = a[12] * b;\n out[13] = a[13] * b;\n out[14] = a[14] * b;\n out[15] = a[15] * b;\n return out;\n}\n/**\r\n * Adds two mat4's after multiplying each element of the second operand by a scalar value.\r\n *\r\n * @param {mat4} out the receiving vector\r\n * @param {mat4} a the first operand\r\n * @param {mat4} b the second operand\r\n * @param {Number} scale the amount to scale b's elements by before adding\r\n * @returns {mat4} out\r\n */\n\nexport function multiplyScalarAndAdd(out, a, b, scale) {\n out[0] = a[0] + b[0] * scale;\n out[1] = a[1] + b[1] * scale;\n out[2] = a[2] + b[2] * scale;\n out[3] = a[3] + b[3] * scale;\n out[4] = a[4] + b[4] * scale;\n out[5] = a[5] + b[5] * scale;\n out[6] = a[6] + b[6] * scale;\n out[7] = a[7] + b[7] * scale;\n out[8] = a[8] + b[8] * scale;\n out[9] = a[9] + b[9] * scale;\n out[10] = a[10] + b[10] * scale;\n out[11] = a[11] + b[11] * scale;\n out[12] = a[12] + b[12] * scale;\n out[13] = a[13] + b[13] * scale;\n out[14] = a[14] + b[14] * scale;\n out[15] = a[15] + b[15] * scale;\n return out;\n}\n/**\r\n * Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)\r\n *\r\n * @param {mat4} a The first matrix.\r\n * @param {mat4} b The second matrix.\r\n * @returns {Boolean} True if the matrices are equal, false otherwise.\r\n */\n\nexport function exactEquals(a, b) {\n return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3] && a[4] === b[4] && a[5] === b[5] && a[6] === b[6] && a[7] === b[7] && a[8] === b[8] && a[9] === b[9] && a[10] === b[10] && a[11] === b[11] && a[12] === b[12] && a[13] === b[13] && a[14] === b[14] && a[15] === b[15];\n}\n/**\r\n * Returns whether or not the matrices have approximately the same elements in the same position.\r\n *\r\n * @param {mat4} a The first matrix.\r\n * @param {mat4} b The second matrix.\r\n * @returns {Boolean} True if the matrices are equal, false otherwise.\r\n */\n\nexport function equals(a, b) {\n var a0 = a[0],\n a1 = a[1],\n a2 = a[2],\n a3 = a[3];\n var a4 = a[4],\n a5 = a[5],\n a6 = a[6],\n a7 = a[7];\n var a8 = a[8],\n a9 = a[9],\n a10 = a[10],\n a11 = a[11];\n var a12 = a[12],\n a13 = a[13],\n a14 = a[14],\n a15 = a[15];\n var b0 = b[0],\n b1 = b[1],\n b2 = b[2],\n b3 = b[3];\n var b4 = b[4],\n b5 = b[5],\n b6 = b[6],\n b7 = b[7];\n var b8 = b[8],\n b9 = b[9],\n b10 = b[10],\n b11 = b[11];\n var b12 = b[12],\n b13 = b[13],\n b14 = b[14],\n b15 = b[15];\n return Math.abs(a0 - b0) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a0), Math.abs(b0)) && Math.abs(a1 - b1) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a1), Math.abs(b1)) && Math.abs(a2 - b2) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a2), Math.abs(b2)) && Math.abs(a3 - b3) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a3), Math.abs(b3)) && Math.abs(a4 - b4) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a4), Math.abs(b4)) && Math.abs(a5 - b5) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a5), Math.abs(b5)) && Math.abs(a6 - b6) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a6), Math.abs(b6)) && Math.abs(a7 - b7) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a7), Math.abs(b7)) && Math.abs(a8 - b8) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a8), Math.abs(b8)) && Math.abs(a9 - b9) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a9), Math.abs(b9)) && Math.abs(a10 - b10) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a10), Math.abs(b10)) && Math.abs(a11 - b11) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a11), Math.abs(b11)) && Math.abs(a12 - b12) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a12), Math.abs(b12)) && Math.abs(a13 - b13) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a13), Math.abs(b13)) && Math.abs(a14 - b14) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a14), Math.abs(b14)) && Math.abs(a15 - b15) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a15), Math.abs(b15));\n}\n/**\r\n * Alias for {@link mat4.multiply}\r\n * @function\r\n */\n\nexport var mul = multiply;\n/**\r\n * Alias for {@link mat4.subtract}\r\n * @function\r\n */\n\nexport var sub = subtract;", "import * as glMatrix from \"./common.js\";\n/**\r\n * 3 Dimensional Vector\r\n * @module vec3\r\n */\n\n/**\r\n * Creates a new, empty vec3\r\n *\r\n * @returns {vec3} a new 3D vector\r\n */\n\nexport function create() {\n var out = new glMatrix.ARRAY_TYPE(3);\n\n if (glMatrix.ARRAY_TYPE != Float32Array) {\n out[0] = 0;\n out[1] = 0;\n out[2] = 0;\n }\n\n return out;\n}\n/**\r\n * Creates a new vec3 initialized with values from an existing vector\r\n *\r\n * @param {vec3} a vector to clone\r\n * @returns {vec3} a new 3D vector\r\n */\n\nexport function clone(a) {\n var out = new glMatrix.ARRAY_TYPE(3);\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n return out;\n}\n/**\r\n * Calculates the length of a vec3\r\n *\r\n * @param {vec3} a vector to calculate length of\r\n * @returns {Number} length of a\r\n */\n\nexport function length(a) {\n var x = a[0];\n var y = a[1];\n var z = a[2];\n return Math.hypot(x, y, z);\n}\n/**\r\n * Creates a new vec3 initialized with the given values\r\n *\r\n * @param {Number} x X component\r\n * @param {Number} y Y component\r\n * @param {Number} z Z component\r\n * @returns {vec3} a new 3D vector\r\n */\n\nexport function fromValues(x, y, z) {\n var out = new glMatrix.ARRAY_TYPE(3);\n out[0] = x;\n out[1] = y;\n out[2] = z;\n return out;\n}\n/**\r\n * Copy the values from one vec3 to another\r\n *\r\n * @param {vec3} out the receiving vector\r\n * @param {vec3} a the source vector\r\n * @returns {vec3} out\r\n */\n\nexport function copy(out, a) {\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n return out;\n}\n/**\r\n * Set the components of a vec3 to the given values\r\n *\r\n * @param {vec3} out the receiving vector\r\n * @param {Number} x X component\r\n * @param {Number} y Y component\r\n * @param {Number} z Z component\r\n * @returns {vec3} out\r\n */\n\nexport function set(out, x, y, z) {\n out[0] = x;\n out[1] = y;\n out[2] = z;\n return out;\n}\n/**\r\n * Adds two vec3's\r\n *\r\n * @param {vec3} out the receiving vector\r\n * @param {vec3} a the first operand\r\n * @param {vec3} b the second operand\r\n * @returns {vec3} out\r\n */\n\nexport function add(out, a, b) {\n out[0] = a[0] + b[0];\n out[1] = a[1] + b[1];\n out[2] = a[2] + b[2];\n return out;\n}\n/**\r\n * Subtracts vector b from vector a\r\n *\r\n * @param {vec3} out the receiving vector\r\n * @param {vec3} a the first operand\r\n * @param {vec3} b the second operand\r\n * @returns {vec3} out\r\n */\n\nexport function subtract(out, a, b) {\n out[0] = a[0] - b[0];\n out[1] = a[1] - b[1];\n out[2] = a[2] - b[2];\n return out;\n}\n/**\r\n * Multiplies two vec3's\r\n *\r\n * @param {vec3} out the receiving vector\r\n * @param {vec3} a the first operand\r\n * @param {vec3} b the second operand\r\n * @returns {vec3} out\r\n */\n\nexport function multiply(out, a, b) {\n out[0] = a[0] * b[0];\n out[1] = a[1] * b[1];\n out[2] = a[2] * b[2];\n return out;\n}\n/**\r\n * Divides two vec3's\r\n *\r\n * @param {vec3} out the receiving vector\r\n * @param {vec3} a the first operand\r\n * @param {vec3} b the second operand\r\n * @returns {vec3} out\r\n */\n\nexport function divide(out, a, b) {\n out[0] = a[0] / b[0];\n out[1] = a[1] / b[1];\n out[2] = a[2] / b[2];\n return out;\n}\n/**\r\n * Math.ceil the components of a vec3\r\n *\r\n * @param {vec3} out the receiving vector\r\n * @param {vec3} a vector to ceil\r\n * @returns {vec3} out\r\n */\n\nexport function ceil(out, a) {\n out[0] = Math.ceil(a[0]);\n out[1] = Math.ceil(a[1]);\n out[2] = Math.ceil(a[2]);\n return out;\n}\n/**\r\n * Math.floor the components of a vec3\r\n *\r\n * @param {vec3} out the receiving vector\r\n * @param {vec3} a vector to floor\r\n * @returns {vec3} out\r\n */\n\nexport function floor(out, a) {\n out[0] = Math.floor(a[0]);\n out[1] = Math.floor(a[1]);\n out[2] = Math.floor(a[2]);\n return out;\n}\n/**\r\n * Returns the minimum of two vec3's\r\n *\r\n * @param {vec3} out the receiving vector\r\n * @param {vec3} a the first operand\r\n * @param {vec3} b the second operand\r\n * @returns {vec3} out\r\n */\n\nexport function min(out, a, b) {\n out[0] = Math.min(a[0], b[0]);\n out[1] = Math.min(a[1], b[1]);\n out[2] = Math.min(a[2], b[2]);\n return out;\n}\n/**\r\n * Returns the maximum of two vec3's\r\n *\r\n * @param {vec3} out the receiving vector\r\n * @param {vec3} a the first operand\r\n * @param {vec3} b the second operand\r\n * @returns {vec3} out\r\n */\n\nexport function max(out, a, b) {\n out[0] = Math.max(a[0], b[0]);\n out[1] = Math.max(a[1], b[1]);\n out[2] = Math.max(a[2], b[2]);\n return out;\n}\n/**\r\n * Math.round the components of a vec3\r\n *\r\n * @param {vec3} out the receiving vector\r\n * @param {vec3} a vector to round\r\n * @returns {vec3} out\r\n */\n\nexport function round(out, a) {\n out[0] = Math.round(a[0]);\n out[1] = Math.round(a[1]);\n out[2] = Math.round(a[2]);\n return out;\n}\n/**\r\n * Scales a vec3 by a scalar number\r\n *\r\n * @param {vec3} out the receiving vector\r\n * @param {vec3} a the vector to scale\r\n * @param {Number} b amount to scale the vector by\r\n * @returns {vec3} out\r\n */\n\nexport function scale(out, a, b) {\n out[0] = a[0] * b;\n out[1] = a[1] * b;\n out[2] = a[2] * b;\n return out;\n}\n/**\r\n * Adds two vec3's after scaling the second operand by a scalar value\r\n *\r\n * @param {vec3} out the receiving vector\r\n * @param {vec3} a the first operand\r\n * @param {vec3} b the second operand\r\n * @param {Number} scale the amount to scale b by before adding\r\n * @returns {vec3} out\r\n */\n\nexport function scaleAndAdd(out, a, b, scale) {\n out[0] = a[0] + b[0] * scale;\n out[1] = a[1] + b[1] * scale;\n out[2] = a[2] + b[2] * scale;\n return out;\n}\n/**\r\n * Calculates the euclidian distance between two vec3's\r\n *\r\n * @param {vec3} a the first operand\r\n * @param {vec3} b the second operand\r\n * @returns {Number} distance between a and b\r\n */\n\nexport function distance(a, b) {\n var x = b[0] - a[0];\n var y = b[1] - a[1];\n var z = b[2] - a[2];\n return Math.hypot(x, y, z);\n}\n/**\r\n * Calculates the squared euclidian distance between two vec3's\r\n *\r\n * @param {vec3} a the first operand\r\n * @param {vec3} b the second operand\r\n * @returns {Number} squared distance between a and b\r\n */\n\nexport function squaredDistance(a, b) {\n var x = b[0] - a[0];\n var y = b[1] - a[1];\n var z = b[2] - a[2];\n return x * x + y * y + z * z;\n}\n/**\r\n * Calculates the squared length of a vec3\r\n *\r\n * @param {vec3} a vector to calculate squared length of\r\n * @returns {Number} squared length of a\r\n */\n\nexport function squaredLength(a) {\n var x = a[0];\n var y = a[1];\n var z = a[2];\n return x * x + y * y + z * z;\n}\n/**\r\n * Negates the components of a vec3\r\n *\r\n * @param {vec3} out the receiving vector\r\n * @param {vec3} a vector to negate\r\n * @returns {vec3} out\r\n */\n\nexport function negate(out, a) {\n out[0] = -a[0];\n out[1] = -a[1];\n out[2] = -a[2];\n return out;\n}\n/**\r\n * Returns the inverse of the components of a vec3\r\n *\r\n * @param {vec3} out the receiving vector\r\n * @param {vec3} a vector to invert\r\n * @returns {vec3} out\r\n */\n\nexport function inverse(out, a) {\n out[0] = 1.0 / a[0];\n out[1] = 1.0 / a[1];\n out[2] = 1.0 / a[2];\n return out;\n}\n/**\r\n * Normalize a vec3\r\n *\r\n * @param {vec3} out the receiving vector\r\n * @param {vec3} a vector to normalize\r\n * @returns {vec3} out\r\n */\n\nexport function normalize(out, a) {\n var x = a[0];\n var y = a[1];\n var z = a[2];\n var len = x * x + y * y + z * z;\n\n if (len > 0) {\n //TODO: evaluate use of glm_invsqrt here?\n len = 1 / Math.sqrt(len);\n }\n\n out[0] = a[0] * len;\n out[1] = a[1] * len;\n out[2] = a[2] * len;\n return out;\n}\n/**\r\n * Calculates the dot product of two vec3's\r\n *\r\n * @param {vec3} a the first operand\r\n * @param {vec3} b the second operand\r\n * @returns {Number} dot product of a and b\r\n */\n\nexport function dot(a, b) {\n return a[0] * b[0] + a[1] * b[1] + a[2] * b[2];\n}\n/**\r\n * Computes the cross product of two vec3's\r\n *\r\n * @param {vec3} out the receiving vector\r\n * @param {vec3} a the first operand\r\n * @param {vec3} b the second operand\r\n * @returns {vec3} out\r\n */\n\nexport function cross(out, a, b) {\n var ax = a[0],\n ay = a[1],\n az = a[2];\n var bx = b[0],\n by = b[1],\n bz = b[2];\n out[0] = ay * bz - az * by;\n out[1] = az * bx - ax * bz;\n out[2] = ax * by - ay * bx;\n return out;\n}\n/**\r\n * Performs a linear interpolation between two vec3's\r\n *\r\n * @param {vec3} out the receiving vector\r\n * @param {vec3} a the first operand\r\n * @param {vec3} b the second operand\r\n * @param {Number} t interpolation amount, in the range [0-1], between the two inputs\r\n * @returns {vec3} out\r\n */\n\nexport function lerp(out, a, b, t) {\n var ax = a[0];\n var ay = a[1];\n var az = a[2];\n out[0] = ax + t * (b[0] - ax);\n out[1] = ay + t * (b[1] - ay);\n out[2] = az + t * (b[2] - az);\n return out;\n}\n/**\r\n * Performs a hermite interpolation with two control points\r\n *\r\n * @param {vec3} out the receiving vector\r\n * @param {vec3} a the first operand\r\n * @param {vec3} b the second operand\r\n * @param {vec3} c the third operand\r\n * @param {vec3} d the fourth operand\r\n * @param {Number} t interpolation amount, in the range [0-1], between the two inputs\r\n * @returns {vec3} out\r\n */\n\nexport function hermite(out, a, b, c, d, t) {\n var factorTimes2 = t * t;\n var factor1 = factorTimes2 * (2 * t - 3) + 1;\n var factor2 = factorTimes2 * (t - 2) + t;\n var factor3 = factorTimes2 * (t - 1);\n var factor4 = factorTimes2 * (3 - 2 * t);\n out[0] = a[0] * factor1 + b[0] * factor2 + c[0] * factor3 + d[0] * factor4;\n out[1] = a[1] * factor1 + b[1] * factor2 + c[1] * factor3 + d[1] * factor4;\n out[2] = a[2] * factor1 + b[2] * factor2 + c[2] * factor3 + d[2] * factor4;\n return out;\n}\n/**\r\n * Performs a bezier interpolation with two control points\r\n *\r\n * @param {vec3} out the receiving vector\r\n * @param {vec3} a the first operand\r\n * @param {vec3} b the second operand\r\n * @param {vec3} c the third operand\r\n * @param {vec3} d the fourth operand\r\n * @param {Number} t interpolation amount, in the range [0-1], between the two inputs\r\n * @returns {vec3} out\r\n */\n\nexport function bezier(out, a, b, c, d, t) {\n var inverseFactor = 1 - t;\n var inverseFactorTimesTwo = inverseFactor * inverseFactor;\n var factorTimes2 = t * t;\n var factor1 = inverseFactorTimesTwo * inverseFactor;\n var factor2 = 3 * t * inverseFactorTimesTwo;\n var factor3 = 3 * factorTimes2 * inverseFactor;\n var factor4 = factorTimes2 * t;\n out[0] = a[0] * factor1 + b[0] * factor2 + c[0] * factor3 + d[0] * factor4;\n out[1] = a[1] * factor1 + b[1] * factor2 + c[1] * factor3 + d[1] * factor4;\n out[2] = a[2] * factor1 + b[2] * factor2 + c[2] * factor3 + d[2] * factor4;\n return out;\n}\n/**\r\n * Generates a random vector with the given scale\r\n *\r\n * @param {vec3} out the receiving vector\r\n * @param {Number} [scale] Length of the resulting vector. If ommitted, a unit vector will be returned\r\n * @returns {vec3} out\r\n */\n\nexport function random(out, scale) {\n scale = scale || 1.0;\n var r = glMatrix.RANDOM() * 2.0 * Math.PI;\n var z = glMatrix.RANDOM() * 2.0 - 1.0;\n var zScale = Math.sqrt(1.0 - z * z) * scale;\n out[0] = Math.cos(r) * zScale;\n out[1] = Math.sin(r) * zScale;\n out[2] = z * scale;\n return out;\n}\n/**\r\n * Transforms the vec3 with a mat4.\r\n * 4th vector component is implicitly '1'\r\n *\r\n * @param {vec3} out the receiving vector\r\n * @param {vec3} a the vector to transform\r\n * @param {mat4} m matrix to transform with\r\n * @returns {vec3} out\r\n */\n\nexport function transformMat4(out, a, m) {\n var x = a[0],\n y = a[1],\n z = a[2];\n var w = m[3] * x + m[7] * y + m[11] * z + m[15];\n w = w || 1.0;\n out[0] = (m[0] * x + m[4] * y + m[8] * z + m[12]) / w;\n out[1] = (m[1] * x + m[5] * y + m[9] * z + m[13]) / w;\n out[2] = (m[2] * x + m[6] * y + m[10] * z + m[14]) / w;\n return out;\n}\n/**\r\n * Transforms the vec3 with a mat3.\r\n *\r\n * @param {vec3} out the receiving vector\r\n * @param {vec3} a the vector to transform\r\n * @param {mat3} m the 3x3 matrix to transform with\r\n * @returns {vec3} out\r\n */\n\nexport function transformMat3(out, a, m) {\n var x = a[0],\n y = a[1],\n z = a[2];\n out[0] = x * m[0] + y * m[3] + z * m[6];\n out[1] = x * m[1] + y * m[4] + z * m[7];\n out[2] = x * m[2] + y * m[5] + z * m[8];\n return out;\n}\n/**\r\n * Transforms the vec3 with a quat\r\n * Can also be used for dual quaternions. (Multiply it with the real part)\r\n *\r\n * @param {vec3} out the receiving vector\r\n * @param {vec3} a the vector to transform\r\n * @param {quat} q quaternion to transform with\r\n * @returns {vec3} out\r\n */\n\nexport function transformQuat(out, a, q) {\n // benchmarks: https://jsperf.com/quaternion-transform-vec3-implementations-fixed\n var qx = q[0],\n qy = q[1],\n qz = q[2],\n qw = q[3];\n var x = a[0],\n y = a[1],\n z = a[2]; // var qvec = [qx, qy, qz];\n // var uv = vec3.cross([], qvec, a);\n\n var uvx = qy * z - qz * y,\n uvy = qz * x - qx * z,\n uvz = qx * y - qy * x; // var uuv = vec3.cross([], qvec, uv);\n\n var uuvx = qy * uvz - qz * uvy,\n uuvy = qz * uvx - qx * uvz,\n uuvz = qx * uvy - qy * uvx; // vec3.scale(uv, uv, 2 * w);\n\n var w2 = qw * 2;\n uvx *= w2;\n uvy *= w2;\n uvz *= w2; // vec3.scale(uuv, uuv, 2);\n\n uuvx *= 2;\n uuvy *= 2;\n uuvz *= 2; // return vec3.add(out, a, vec3.add(out, uv, uuv));\n\n out[0] = x + uvx + uuvx;\n out[1] = y + uvy + uuvy;\n out[2] = z + uvz + uuvz;\n return out;\n}\n/**\r\n * Rotate a 3D vector around the x-axis\r\n * @param {vec3} out The receiving vec3\r\n * @param {vec3} a The vec3 point to rotate\r\n * @param {vec3} b The origin of the rotation\r\n * @param {Number} rad The angle of rotation in radians\r\n * @returns {vec3} out\r\n */\n\nexport function rotateX(out, a, b, rad) {\n var p = [],\n r = []; //Translate point to the origin\n\n p[0] = a[0] - b[0];\n p[1] = a[1] - b[1];\n p[2] = a[2] - b[2]; //perform rotation\n\n r[0] = p[0];\n r[1] = p[1] * Math.cos(rad) - p[2] * Math.sin(rad);\n r[2] = p[1] * Math.sin(rad) + p[2] * Math.cos(rad); //translate to correct position\n\n out[0] = r[0] + b[0];\n out[1] = r[1] + b[1];\n out[2] = r[2] + b[2];\n return out;\n}\n/**\r\n * Rotate a 3D vector around the y-axis\r\n * @param {vec3} out The receiving vec3\r\n * @param {vec3} a The vec3 point to rotate\r\n * @param {vec3} b The origin of the rotation\r\n * @param {Number} rad The angle of rotation in radians\r\n * @returns {vec3} out\r\n */\n\nexport function rotateY(out, a, b, rad) {\n var p = [],\n r = []; //Translate point to the origin\n\n p[0] = a[0] - b[0];\n p[1] = a[1] - b[1];\n p[2] = a[2] - b[2]; //perform rotation\n\n r[0] = p[2] * Math.sin(rad) + p[0] * Math.cos(rad);\n r[1] = p[1];\n r[2] = p[2] * Math.cos(rad) - p[0] * Math.sin(rad); //translate to correct position\n\n out[0] = r[0] + b[0];\n out[1] = r[1] + b[1];\n out[2] = r[2] + b[2];\n return out;\n}\n/**\r\n * Rotate a 3D vector around the z-axis\r\n * @param {vec3} out The receiving vec3\r\n * @param {vec3} a The vec3 point to rotate\r\n * @param {vec3} b The origin of the rotation\r\n * @param {Number} rad The angle of rotation in radians\r\n * @returns {vec3} out\r\n */\n\nexport function rotateZ(out, a, b, rad) {\n var p = [],\n r = []; //Translate point to the origin\n\n p[0] = a[0] - b[0];\n p[1] = a[1] - b[1];\n p[2] = a[2] - b[2]; //perform rotation\n\n r[0] = p[0] * Math.cos(rad) - p[1] * Math.sin(rad);\n r[1] = p[0] * Math.sin(rad) + p[1] * Math.cos(rad);\n r[2] = p[2]; //translate to correct position\n\n out[0] = r[0] + b[0];\n out[1] = r[1] + b[1];\n out[2] = r[2] + b[2];\n return out;\n}\n/**\r\n * Get the angle between two 3D vectors\r\n * @param {vec3} a The first operand\r\n * @param {vec3} b The second operand\r\n * @returns {Number} The angle in radians\r\n */\n\nexport function angle(a, b) {\n var ax = a[0],\n ay = a[1],\n az = a[2],\n bx = b[0],\n by = b[1],\n bz = b[2],\n mag1 = Math.sqrt(ax * ax + ay * ay + az * az),\n mag2 = Math.sqrt(bx * bx + by * by + bz * bz),\n mag = mag1 * mag2,\n cosine = mag && dot(a, b) / mag;\n return Math.acos(Math.min(Math.max(cosine, -1), 1));\n}\n/**\r\n * Set the components of a vec3 to zero\r\n *\r\n * @param {vec3} out the receiving vector\r\n * @returns {vec3} out\r\n */\n\nexport function zero(out) {\n out[0] = 0.0;\n out[1] = 0.0;\n out[2] = 0.0;\n return out;\n}\n/**\r\n * Returns a string representation of a vector\r\n *\r\n * @param {vec3} a vector to represent as a string\r\n * @returns {String} string representation of the vector\r\n */\n\nexport function str(a) {\n return \"vec3(\" + a[0] + \", \" + a[1] + \", \" + a[2] + \")\";\n}\n/**\r\n * Returns whether or not the vectors have exactly the same elements in the same position (when compared with ===)\r\n *\r\n * @param {vec3} a The first vector.\r\n * @param {vec3} b The second vector.\r\n * @returns {Boolean} True if the vectors are equal, false otherwise.\r\n */\n\nexport function exactEquals(a, b) {\n return a[0] === b[0] && a[1] === b[1] && a[2] === b[2];\n}\n/**\r\n * Returns whether or not the vectors have approximately the same elements in the same position.\r\n *\r\n * @param {vec3} a The first vector.\r\n * @param {vec3} b The second vector.\r\n * @returns {Boolean} True if the vectors are equal, false otherwise.\r\n */\n\nexport function equals(a, b) {\n var a0 = a[0],\n a1 = a[1],\n a2 = a[2];\n var b0 = b[0],\n b1 = b[1],\n b2 = b[2];\n return Math.abs(a0 - b0) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a0), Math.abs(b0)) && Math.abs(a1 - b1) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a1), Math.abs(b1)) && Math.abs(a2 - b2) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a2), Math.abs(b2));\n}\n/**\r\n * Alias for {@link vec3.subtract}\r\n * @function\r\n */\n\nexport var sub = subtract;\n/**\r\n * Alias for {@link vec3.multiply}\r\n * @function\r\n */\n\nexport var mul = multiply;\n/**\r\n * Alias for {@link vec3.divide}\r\n * @function\r\n */\n\nexport var div = divide;\n/**\r\n * Alias for {@link vec3.distance}\r\n * @function\r\n */\n\nexport var dist = distance;\n/**\r\n * Alias for {@link vec3.squaredDistance}\r\n * @function\r\n */\n\nexport var sqrDist = squaredDistance;\n/**\r\n * Alias for {@link vec3.length}\r\n * @function\r\n */\n\nexport var len = length;\n/**\r\n * Alias for {@link vec3.squaredLength}\r\n * @function\r\n */\n\nexport var sqrLen = squaredLength;\n/**\r\n * Perform some operation over an array of vec3s.\r\n *\r\n * @param {Array} a the array of vectors to iterate over\r\n * @param {Number} stride Number of elements between the start of each vec3. If 0 assumes tightly packed\r\n * @param {Number} offset Number of elements to skip at the beginning of the array\r\n * @param {Number} count Number of vec3s to iterate over. If 0 iterates over entire array\r\n * @param {Function} fn Function to call for each vector in the array\r\n * @param {Object} [arg] additional argument to pass to fn\r\n * @returns {Array} a\r\n * @function\r\n */\n\nexport var forEach = function () {\n var vec = create();\n return function (a, stride, offset, count, fn, arg) {\n var i, l;\n\n if (!stride) {\n stride = 3;\n }\n\n if (!offset) {\n offset = 0;\n }\n\n if (count) {\n l = Math.min(count * stride + offset, a.length);\n } else {\n l = a.length;\n }\n\n for (i = offset; i < l; i += stride) {\n vec[0] = a[i];\n vec[1] = a[i + 1];\n vec[2] = a[i + 2];\n fn(vec, vec, arg);\n a[i] = vec[0];\n a[i + 1] = vec[1];\n a[i + 2] = vec[2];\n }\n\n return a;\n };\n}();", "import * as glMatrix from \"./common.js\";\n/**\r\n * 4 Dimensional Vector\r\n * @module vec4\r\n */\n\n/**\r\n * Creates a new, empty vec4\r\n *\r\n * @returns {vec4} a new 4D vector\r\n */\n\nexport function create() {\n var out = new glMatrix.ARRAY_TYPE(4);\n\n if (glMatrix.ARRAY_TYPE != Float32Array) {\n out[0] = 0;\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n }\n\n return out;\n}\n/**\r\n * Creates a new vec4 initialized with values from an existing vector\r\n *\r\n * @param {vec4} a vector to clone\r\n * @returns {vec4} a new 4D vector\r\n */\n\nexport function clone(a) {\n var out = new glMatrix.ARRAY_TYPE(4);\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n out[3] = a[3];\n return out;\n}\n/**\r\n * Creates a new vec4 initialized with the given values\r\n *\r\n * @param {Number} x X component\r\n * @param {Number} y Y component\r\n * @param {Number} z Z component\r\n * @param {Number} w W component\r\n * @returns {vec4} a new 4D vector\r\n */\n\nexport function fromValues(x, y, z, w) {\n var out = new glMatrix.ARRAY_TYPE(4);\n out[0] = x;\n out[1] = y;\n out[2] = z;\n out[3] = w;\n return out;\n}\n/**\r\n * Copy the values from one vec4 to another\r\n *\r\n * @param {vec4} out the receiving vector\r\n * @param {vec4} a the source vector\r\n * @returns {vec4} out\r\n */\n\nexport function copy(out, a) {\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n out[3] = a[3];\n return out;\n}\n/**\r\n * Set the components of a vec4 to the given values\r\n *\r\n * @param {vec4} out the receiving vector\r\n * @param {Number} x X component\r\n * @param {Number} y Y component\r\n * @param {Number} z Z component\r\n * @param {Number} w W component\r\n * @returns {vec4} out\r\n */\n\nexport function set(out, x, y, z, w) {\n out[0] = x;\n out[1] = y;\n out[2] = z;\n out[3] = w;\n return out;\n}\n/**\r\n * Adds two vec4's\r\n *\r\n * @param {vec4} out the receiving vector\r\n * @param {vec4} a the first operand\r\n * @param {vec4} b the second operand\r\n * @returns {vec4} out\r\n */\n\nexport function add(out, a, b) {\n out[0] = a[0] + b[0];\n out[1] = a[1] + b[1];\n out[2] = a[2] + b[2];\n out[3] = a[3] + b[3];\n return out;\n}\n/**\r\n * Subtracts vector b from vector a\r\n *\r\n * @param {vec4} out the receiving vector\r\n * @param {vec4} a the first operand\r\n * @param {vec4} b the second operand\r\n * @returns {vec4} out\r\n */\n\nexport function subtract(out, a, b) {\n out[0] = a[0] - b[0];\n out[1] = a[1] - b[1];\n out[2] = a[2] - b[2];\n out[3] = a[3] - b[3];\n return out;\n}\n/**\r\n * Multiplies two vec4's\r\n *\r\n * @param {vec4} out the receiving vector\r\n * @param {vec4} a the first operand\r\n * @param {vec4} b the second operand\r\n * @returns {vec4} out\r\n */\n\nexport function multiply(out, a, b) {\n out[0] = a[0] * b[0];\n out[1] = a[1] * b[1];\n out[2] = a[2] * b[2];\n out[3] = a[3] * b[3];\n return out;\n}\n/**\r\n * Divides two vec4's\r\n *\r\n * @param {vec4} out the receiving vector\r\n * @param {vec4} a the first operand\r\n * @param {vec4} b the second operand\r\n * @returns {vec4} out\r\n */\n\nexport function divide(out, a, b) {\n out[0] = a[0] / b[0];\n out[1] = a[1] / b[1];\n out[2] = a[2] / b[2];\n out[3] = a[3] / b[3];\n return out;\n}\n/**\r\n * Math.ceil the components of a vec4\r\n *\r\n * @param {vec4} out the receiving vector\r\n * @param {vec4} a vector to ceil\r\n * @returns {vec4} out\r\n */\n\nexport function ceil(out, a) {\n out[0] = Math.ceil(a[0]);\n out[1] = Math.ceil(a[1]);\n out[2] = Math.ceil(a[2]);\n out[3] = Math.ceil(a[3]);\n return out;\n}\n/**\r\n * Math.floor the components of a vec4\r\n *\r\n * @param {vec4} out the receiving vector\r\n * @param {vec4} a vector to floor\r\n * @returns {vec4} out\r\n */\n\nexport function floor(out, a) {\n out[0] = Math.floor(a[0]);\n out[1] = Math.floor(a[1]);\n out[2] = Math.floor(a[2]);\n out[3] = Math.floor(a[3]);\n return out;\n}\n/**\r\n * Returns the minimum of two vec4's\r\n *\r\n * @param {vec4} out the receiving vector\r\n * @param {vec4} a the first operand\r\n * @param {vec4} b the second operand\r\n * @returns {vec4} out\r\n */\n\nexport function min(out, a, b) {\n out[0] = Math.min(a[0], b[0]);\n out[1] = Math.min(a[1], b[1]);\n out[2] = Math.min(a[2], b[2]);\n out[3] = Math.min(a[3], b[3]);\n return out;\n}\n/**\r\n * Returns the maximum of two vec4's\r\n *\r\n * @param {vec4} out the receiving vector\r\n * @param {vec4} a the first operand\r\n * @param {vec4} b the second operand\r\n * @returns {vec4} out\r\n */\n\nexport function max(out, a, b) {\n out[0] = Math.max(a[0], b[0]);\n out[1] = Math.max(a[1], b[1]);\n out[2] = Math.max(a[2], b[2]);\n out[3] = Math.max(a[3], b[3]);\n return out;\n}\n/**\r\n * Math.round the components of a vec4\r\n *\r\n * @param {vec4} out the receiving vector\r\n * @param {vec4} a vector to round\r\n * @returns {vec4} out\r\n */\n\nexport function round(out, a) {\n out[0] = Math.round(a[0]);\n out[1] = Math.round(a[1]);\n out[2] = Math.round(a[2]);\n out[3] = Math.round(a[3]);\n return out;\n}\n/**\r\n * Scales a vec4 by a scalar number\r\n *\r\n * @param {vec4} out the receiving vector\r\n * @param {vec4} a the vector to scale\r\n * @param {Number} b amount to scale the vector by\r\n * @returns {vec4} out\r\n */\n\nexport function scale(out, a, b) {\n out[0] = a[0] * b;\n out[1] = a[1] * b;\n out[2] = a[2] * b;\n out[3] = a[3] * b;\n return out;\n}\n/**\r\n * Adds two vec4's after scaling the second operand by a scalar value\r\n *\r\n * @param {vec4} out the receiving vector\r\n * @param {vec4} a the first operand\r\n * @param {vec4} b the second operand\r\n * @param {Number} scale the amount to scale b by before adding\r\n * @returns {vec4} out\r\n */\n\nexport function scaleAndAdd(out, a, b, scale) {\n out[0] = a[0] + b[0] * scale;\n out[1] = a[1] + b[1] * scale;\n out[2] = a[2] + b[2] * scale;\n out[3] = a[3] + b[3] * scale;\n return out;\n}\n/**\r\n * Calculates the euclidian distance between two vec4's\r\n *\r\n * @param {vec4} a the first operand\r\n * @param {vec4} b the second operand\r\n * @returns {Number} distance between a and b\r\n */\n\nexport function distance(a, b) {\n var x = b[0] - a[0];\n var y = b[1] - a[1];\n var z = b[2] - a[2];\n var w = b[3] - a[3];\n return Math.hypot(x, y, z, w);\n}\n/**\r\n * Calculates the squared euclidian distance between two vec4's\r\n *\r\n * @param {vec4} a the first operand\r\n * @param {vec4} b the second operand\r\n * @returns {Number} squared distance between a and b\r\n */\n\nexport function squaredDistance(a, b) {\n var x = b[0] - a[0];\n var y = b[1] - a[1];\n var z = b[2] - a[2];\n var w = b[3] - a[3];\n return x * x + y * y + z * z + w * w;\n}\n/**\r\n * Calculates the length of a vec4\r\n *\r\n * @param {vec4} a vector to calculate length of\r\n * @returns {Number} length of a\r\n */\n\nexport function length(a) {\n var x = a[0];\n var y = a[1];\n var z = a[2];\n var w = a[3];\n return Math.hypot(x, y, z, w);\n}\n/**\r\n * Calculates the squared length of a vec4\r\n *\r\n * @param {vec4} a vector to calculate squared length of\r\n * @returns {Number} squared length of a\r\n */\n\nexport function squaredLength(a) {\n var x = a[0];\n var y = a[1];\n var z = a[2];\n var w = a[3];\n return x * x + y * y + z * z + w * w;\n}\n/**\r\n * Negates the components of a vec4\r\n *\r\n * @param {vec4} out the receiving vector\r\n * @param {vec4} a vector to negate\r\n * @returns {vec4} out\r\n */\n\nexport function negate(out, a) {\n out[0] = -a[0];\n out[1] = -a[1];\n out[2] = -a[2];\n out[3] = -a[3];\n return out;\n}\n/**\r\n * Returns the inverse of the components of a vec4\r\n *\r\n * @param {vec4} out the receiving vector\r\n * @param {vec4} a vector to invert\r\n * @returns {vec4} out\r\n */\n\nexport function inverse(out, a) {\n out[0] = 1.0 / a[0];\n out[1] = 1.0 / a[1];\n out[2] = 1.0 / a[2];\n out[3] = 1.0 / a[3];\n return out;\n}\n/**\r\n * Normalize a vec4\r\n *\r\n * @param {vec4} out the receiving vector\r\n * @param {vec4} a vector to normalize\r\n * @returns {vec4} out\r\n */\n\nexport function normalize(out, a) {\n var x = a[0];\n var y = a[1];\n var z = a[2];\n var w = a[3];\n var len = x * x + y * y + z * z + w * w;\n\n if (len > 0) {\n len = 1 / Math.sqrt(len);\n }\n\n out[0] = x * len;\n out[1] = y * len;\n out[2] = z * len;\n out[3] = w * len;\n return out;\n}\n/**\r\n * Calculates the dot product of two vec4's\r\n *\r\n * @param {vec4} a the first operand\r\n * @param {vec4} b the second operand\r\n * @returns {Number} dot product of a and b\r\n */\n\nexport function dot(a, b) {\n return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];\n}\n/**\r\n * Returns the cross-product of three vectors in a 4-dimensional space\r\n *\r\n * @param {vec4} result the receiving vector\r\n * @param {vec4} U the first vector\r\n * @param {vec4} V the second vector\r\n * @param {vec4} W the third vector\r\n * @returns {vec4} result\r\n */\n\nexport function cross(out, u, v, w) {\n var A = v[0] * w[1] - v[1] * w[0],\n B = v[0] * w[2] - v[2] * w[0],\n C = v[0] * w[3] - v[3] * w[0],\n D = v[1] * w[2] - v[2] * w[1],\n E = v[1] * w[3] - v[3] * w[1],\n F = v[2] * w[3] - v[3] * w[2];\n var G = u[0];\n var H = u[1];\n var I = u[2];\n var J = u[3];\n out[0] = H * F - I * E + J * D;\n out[1] = -(G * F) + I * C - J * B;\n out[2] = G * E - H * C + J * A;\n out[3] = -(G * D) + H * B - I * A;\n return out;\n}\n/**\r\n * Performs a linear interpolation between two vec4's\r\n *\r\n * @param {vec4} out the receiving vector\r\n * @param {vec4} a the first operand\r\n * @param {vec4} b the second operand\r\n * @param {Number} t interpolation amount, in the range [0-1], between the two inputs\r\n * @returns {vec4} out\r\n */\n\nexport function lerp(out, a, b, t) {\n var ax = a[0];\n var ay = a[1];\n var az = a[2];\n var aw = a[3];\n out[0] = ax + t * (b[0] - ax);\n out[1] = ay + t * (b[1] - ay);\n out[2] = az + t * (b[2] - az);\n out[3] = aw + t * (b[3] - aw);\n return out;\n}\n/**\r\n * Generates a random vector with the given scale\r\n *\r\n * @param {vec4} out the receiving vector\r\n * @param {Number} [scale] Length of the resulting vector. If ommitted, a unit vector will be returned\r\n * @returns {vec4} out\r\n */\n\nexport function random(out, scale) {\n scale = scale || 1.0; // Marsaglia, George. Choosing a Point from the Surface of a\n // Sphere. Ann. Math. Statist. 43 (1972), no. 2, 645--646.\n // http://projecteuclid.org/euclid.aoms/1177692644;\n\n var v1, v2, v3, v4;\n var s1, s2;\n\n do {\n v1 = glMatrix.RANDOM() * 2 - 1;\n v2 = glMatrix.RANDOM() * 2 - 1;\n s1 = v1 * v1 + v2 * v2;\n } while (s1 >= 1);\n\n do {\n v3 = glMatrix.RANDOM() * 2 - 1;\n v4 = glMatrix.RANDOM() * 2 - 1;\n s2 = v3 * v3 + v4 * v4;\n } while (s2 >= 1);\n\n var d = Math.sqrt((1 - s1) / s2);\n out[0] = scale * v1;\n out[1] = scale * v2;\n out[2] = scale * v3 * d;\n out[3] = scale * v4 * d;\n return out;\n}\n/**\r\n * Transforms the vec4 with a mat4.\r\n *\r\n * @param {vec4} out the receiving vector\r\n * @param {vec4} a the vector to transform\r\n * @param {mat4} m matrix to transform with\r\n * @returns {vec4} out\r\n */\n\nexport function transformMat4(out, a, m) {\n var x = a[0],\n y = a[1],\n z = a[2],\n w = a[3];\n out[0] = m[0] * x + m[4] * y + m[8] * z + m[12] * w;\n out[1] = m[1] * x + m[5] * y + m[9] * z + m[13] * w;\n out[2] = m[2] * x + m[6] * y + m[10] * z + m[14] * w;\n out[3] = m[3] * x + m[7] * y + m[11] * z + m[15] * w;\n return out;\n}\n/**\r\n * Transforms the vec4 with a quat\r\n *\r\n * @param {vec4} out the receiving vector\r\n * @param {vec4} a the vector to transform\r\n * @param {quat} q quaternion to transform with\r\n * @returns {vec4} out\r\n */\n\nexport function transformQuat(out, a, q) {\n var x = a[0],\n y = a[1],\n z = a[2];\n var qx = q[0],\n qy = q[1],\n qz = q[2],\n qw = q[3]; // calculate quat * vec\n\n var ix = qw * x + qy * z - qz * y;\n var iy = qw * y + qz * x - qx * z;\n var iz = qw * z + qx * y - qy * x;\n var iw = -qx * x - qy * y - qz * z; // calculate result * inverse quat\n\n out[0] = ix * qw + iw * -qx + iy * -qz - iz * -qy;\n out[1] = iy * qw + iw * -qy + iz * -qx - ix * -qz;\n out[2] = iz * qw + iw * -qz + ix * -qy - iy * -qx;\n out[3] = a[3];\n return out;\n}\n/**\r\n * Set the components of a vec4 to zero\r\n *\r\n * @param {vec4} out the receiving vector\r\n * @returns {vec4} out\r\n */\n\nexport function zero(out) {\n out[0] = 0.0;\n out[1] = 0.0;\n out[2] = 0.0;\n out[3] = 0.0;\n return out;\n}\n/**\r\n * Returns a string representation of a vector\r\n *\r\n * @param {vec4} a vector to represent as a string\r\n * @returns {String} string representation of the vector\r\n */\n\nexport function str(a) {\n return \"vec4(\" + a[0] + \", \" + a[1] + \", \" + a[2] + \", \" + a[3] + \")\";\n}\n/**\r\n * Returns whether or not the vectors have exactly the same elements in the same position (when compared with ===)\r\n *\r\n * @param {vec4} a The first vector.\r\n * @param {vec4} b The second vector.\r\n * @returns {Boolean} True if the vectors are equal, false otherwise.\r\n */\n\nexport function exactEquals(a, b) {\n return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3];\n}\n/**\r\n * Returns whether or not the vectors have approximately the same elements in the same position.\r\n *\r\n * @param {vec4} a The first vector.\r\n * @param {vec4} b The second vector.\r\n * @returns {Boolean} True if the vectors are equal, false otherwise.\r\n */\n\nexport function equals(a, b) {\n var a0 = a[0],\n a1 = a[1],\n a2 = a[2],\n a3 = a[3];\n var b0 = b[0],\n b1 = b[1],\n b2 = b[2],\n b3 = b[3];\n return Math.abs(a0 - b0) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a0), Math.abs(b0)) && Math.abs(a1 - b1) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a1), Math.abs(b1)) && Math.abs(a2 - b2) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a2), Math.abs(b2)) && Math.abs(a3 - b3) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a3), Math.abs(b3));\n}\n/**\r\n * Alias for {@link vec4.subtract}\r\n * @function\r\n */\n\nexport var sub = subtract;\n/**\r\n * Alias for {@link vec4.multiply}\r\n * @function\r\n */\n\nexport var mul = multiply;\n/**\r\n * Alias for {@link vec4.divide}\r\n * @function\r\n */\n\nexport var div = divide;\n/**\r\n * Alias for {@link vec4.distance}\r\n * @function\r\n */\n\nexport var dist = distance;\n/**\r\n * Alias for {@link vec4.squaredDistance}\r\n * @function\r\n */\n\nexport var sqrDist = squaredDistance;\n/**\r\n * Alias for {@link vec4.length}\r\n * @function\r\n */\n\nexport var len = length;\n/**\r\n * Alias for {@link vec4.squaredLength}\r\n * @function\r\n */\n\nexport var sqrLen = squaredLength;\n/**\r\n * Perform some operation over an array of vec4s.\r\n *\r\n * @param {Array} a the array of vectors to iterate over\r\n * @param {Number} stride Number of elements between the start of each vec4. If 0 assumes tightly packed\r\n * @param {Number} offset Number of elements to skip at the beginning of the array\r\n * @param {Number} count Number of vec4s to iterate over. If 0 iterates over entire array\r\n * @param {Function} fn Function to call for each vector in the array\r\n * @param {Object} [arg] additional argument to pass to fn\r\n * @returns {Array} a\r\n * @function\r\n */\n\nexport var forEach = function () {\n var vec = create();\n return function (a, stride, offset, count, fn, arg) {\n var i, l;\n\n if (!stride) {\n stride = 4;\n }\n\n if (!offset) {\n offset = 0;\n }\n\n if (count) {\n l = Math.min(count * stride + offset, a.length);\n } else {\n l = a.length;\n }\n\n for (i = offset; i < l; i += stride) {\n vec[0] = a[i];\n vec[1] = a[i + 1];\n vec[2] = a[i + 2];\n vec[3] = a[i + 3];\n fn(vec, vec, arg);\n a[i] = vec[0];\n a[i + 1] = vec[1];\n a[i + 2] = vec[2];\n a[i + 3] = vec[3];\n }\n\n return a;\n };\n}();", "// @flow\n\nimport StyleLayer from '../style_layer';\n\nimport CircleBucket from '../../data/bucket/circle_bucket';\nimport {polygonIntersectsBufferedPoint} from '../../util/intersection_tests';\nimport {getMaximumPaintValue, translateDistance, translate} from '../query_utils';\nimport properties from './circle_style_layer_properties';\nimport {Transitionable, Transitioning, Layout, PossiblyEvaluated} from '../properties';\nimport {vec4} from 'gl-matrix';\nimport Point from '@mapbox/point-geometry';\n\nimport type {FeatureState} from '../../style-spec/expression';\nimport type Transform from '../../geo/transform';\nimport type {Bucket, BucketParameters} from '../../data/bucket';\nimport type {LayoutProps, PaintProps} from './circle_style_layer_properties';\nimport type {LayerSpecification} from '../../style-spec/types';\n\nclass CircleStyleLayer extends StyleLayer {\n _unevaluatedLayout: Layout;\n layout: PossiblyEvaluated;\n\n _transitionablePaint: Transitionable;\n _transitioningPaint: Transitioning;\n paint: PossiblyEvaluated;\n\n constructor(layer: LayerSpecification) {\n super(layer, properties);\n }\n\n createBucket(parameters: BucketParameters<*>) {\n return new CircleBucket(parameters);\n }\n\n queryRadius(bucket: Bucket): number {\n const circleBucket: CircleBucket = (bucket: any);\n return getMaximumPaintValue('circle-radius', this, circleBucket) +\n getMaximumPaintValue('circle-stroke-width', this, circleBucket) +\n translateDistance(this.paint.get('circle-translate'));\n }\n\n queryIntersectsFeature(queryGeometry: Array,\n feature: VectorTileFeature,\n featureState: FeatureState,\n geometry: Array>,\n zoom: number,\n transform: Transform,\n pixelsToTileUnits: number,\n pixelPosMatrix: Float32Array): boolean {\n const translatedPolygon = translate(queryGeometry,\n this.paint.get('circle-translate'),\n this.paint.get('circle-translate-anchor'),\n transform.angle, pixelsToTileUnits);\n const radius = this.paint.get('circle-radius').evaluate(feature, featureState);\n const stroke = this.paint.get('circle-stroke-width').evaluate(feature, featureState);\n const size = radius + stroke;\n\n // For pitch-alignment: map, compare feature geometry to query geometry in the plane of the tile\n // // Otherwise, compare geometry in the plane of the viewport\n // // A circle with fixed scaling relative to the viewport gets larger in tile space as it moves into the distance\n // // A circle with fixed scaling relative to the map gets smaller in viewport space as it moves into the distance\n const alignWithMap = this.paint.get('circle-pitch-alignment') === 'map';\n const transformedPolygon = alignWithMap ? translatedPolygon : projectQueryGeometry(translatedPolygon, pixelPosMatrix);\n const transformedSize = alignWithMap ? size * pixelsToTileUnits : size;\n\n for (const ring of geometry) {\n for (const point of ring) {\n\n const transformedPoint = alignWithMap ? point : projectPoint(point, pixelPosMatrix);\n\n let adjustedSize = transformedSize;\n const projectedCenter = vec4.transformMat4([], [point.x, point.y, 0, 1], pixelPosMatrix);\n if (this.paint.get('circle-pitch-scale') === 'viewport' && this.paint.get('circle-pitch-alignment') === 'map') {\n adjustedSize *= projectedCenter[3] / transform.cameraToCenterDistance;\n } else if (this.paint.get('circle-pitch-scale') === 'map' && this.paint.get('circle-pitch-alignment') === 'viewport') {\n adjustedSize *= transform.cameraToCenterDistance / projectedCenter[3];\n }\n\n if (polygonIntersectsBufferedPoint(transformedPolygon, transformedPoint, adjustedSize)) return true;\n }\n }\n\n return false;\n }\n}\n\nfunction projectPoint(p: Point, pixelPosMatrix: Float32Array) {\n const point = vec4.transformMat4([], [p.x, p.y, 0, 1], pixelPosMatrix);\n return new Point(point[0] / point[3], point[1] / point[3]);\n}\n\nfunction projectQueryGeometry(queryGeometry: Array, pixelPosMatrix: Float32Array) {\n return queryGeometry.map((p) => {\n return projectPoint(p, pixelPosMatrix);\n });\n}\n\nexport default CircleStyleLayer;\n", "import * as glMatrix from \"./common.js\";\n/**\r\n * 2 Dimensional Vector\r\n * @module vec2\r\n */\n\n/**\r\n * Creates a new, empty vec2\r\n *\r\n * @returns {vec2} a new 2D vector\r\n */\n\nexport function create() {\n var out = new glMatrix.ARRAY_TYPE(2);\n\n if (glMatrix.ARRAY_TYPE != Float32Array) {\n out[0] = 0;\n out[1] = 0;\n }\n\n return out;\n}\n/**\r\n * Creates a new vec2 initialized with values from an existing vector\r\n *\r\n * @param {vec2} a vector to clone\r\n * @returns {vec2} a new 2D vector\r\n */\n\nexport function clone(a) {\n var out = new glMatrix.ARRAY_TYPE(2);\n out[0] = a[0];\n out[1] = a[1];\n return out;\n}\n/**\r\n * Creates a new vec2 initialized with the given values\r\n *\r\n * @param {Number} x X component\r\n * @param {Number} y Y component\r\n * @returns {vec2} a new 2D vector\r\n */\n\nexport function fromValues(x, y) {\n var out = new glMatrix.ARRAY_TYPE(2);\n out[0] = x;\n out[1] = y;\n return out;\n}\n/**\r\n * Copy the values from one vec2 to another\r\n *\r\n * @param {vec2} out the receiving vector\r\n * @param {vec2} a the source vector\r\n * @returns {vec2} out\r\n */\n\nexport function copy(out, a) {\n out[0] = a[0];\n out[1] = a[1];\n return out;\n}\n/**\r\n * Set the components of a vec2 to the given values\r\n *\r\n * @param {vec2} out the receiving vector\r\n * @param {Number} x X component\r\n * @param {Number} y Y component\r\n * @returns {vec2} out\r\n */\n\nexport function set(out, x, y) {\n out[0] = x;\n out[1] = y;\n return out;\n}\n/**\r\n * Adds two vec2's\r\n *\r\n * @param {vec2} out the receiving vector\r\n * @param {vec2} a the first operand\r\n * @param {vec2} b the second operand\r\n * @returns {vec2} out\r\n */\n\nexport function add(out, a, b) {\n out[0] = a[0] + b[0];\n out[1] = a[1] + b[1];\n return out;\n}\n/**\r\n * Subtracts vector b from vector a\r\n *\r\n * @param {vec2} out the receiving vector\r\n * @param {vec2} a the first operand\r\n * @param {vec2} b the second operand\r\n * @returns {vec2} out\r\n */\n\nexport function subtract(out, a, b) {\n out[0] = a[0] - b[0];\n out[1] = a[1] - b[1];\n return out;\n}\n/**\r\n * Multiplies two vec2's\r\n *\r\n * @param {vec2} out the receiving vector\r\n * @param {vec2} a the first operand\r\n * @param {vec2} b the second operand\r\n * @returns {vec2} out\r\n */\n\nexport function multiply(out, a, b) {\n out[0] = a[0] * b[0];\n out[1] = a[1] * b[1];\n return out;\n}\n/**\r\n * Divides two vec2's\r\n *\r\n * @param {vec2} out the receiving vector\r\n * @param {vec2} a the first operand\r\n * @param {vec2} b the second operand\r\n * @returns {vec2} out\r\n */\n\nexport function divide(out, a, b) {\n out[0] = a[0] / b[0];\n out[1] = a[1] / b[1];\n return out;\n}\n/**\r\n * Math.ceil the components of a vec2\r\n *\r\n * @param {vec2} out the receiving vector\r\n * @param {vec2} a vector to ceil\r\n * @returns {vec2} out\r\n */\n\nexport function ceil(out, a) {\n out[0] = Math.ceil(a[0]);\n out[1] = Math.ceil(a[1]);\n return out;\n}\n/**\r\n * Math.floor the components of a vec2\r\n *\r\n * @param {vec2} out the receiving vector\r\n * @param {vec2} a vector to floor\r\n * @returns {vec2} out\r\n */\n\nexport function floor(out, a) {\n out[0] = Math.floor(a[0]);\n out[1] = Math.floor(a[1]);\n return out;\n}\n/**\r\n * Returns the minimum of two vec2's\r\n *\r\n * @param {vec2} out the receiving vector\r\n * @param {vec2} a the first operand\r\n * @param {vec2} b the second operand\r\n * @returns {vec2} out\r\n */\n\nexport function min(out, a, b) {\n out[0] = Math.min(a[0], b[0]);\n out[1] = Math.min(a[1], b[1]);\n return out;\n}\n/**\r\n * Returns the maximum of two vec2's\r\n *\r\n * @param {vec2} out the receiving vector\r\n * @param {vec2} a the first operand\r\n * @param {vec2} b the second operand\r\n * @returns {vec2} out\r\n */\n\nexport function max(out, a, b) {\n out[0] = Math.max(a[0], b[0]);\n out[1] = Math.max(a[1], b[1]);\n return out;\n}\n/**\r\n * Math.round the components of a vec2\r\n *\r\n * @param {vec2} out the receiving vector\r\n * @param {vec2} a vector to round\r\n * @returns {vec2} out\r\n */\n\nexport function round(out, a) {\n out[0] = Math.round(a[0]);\n out[1] = Math.round(a[1]);\n return out;\n}\n/**\r\n * Scales a vec2 by a scalar number\r\n *\r\n * @param {vec2} out the receiving vector\r\n * @param {vec2} a the vector to scale\r\n * @param {Number} b amount to scale the vector by\r\n * @returns {vec2} out\r\n */\n\nexport function scale(out, a, b) {\n out[0] = a[0] * b;\n out[1] = a[1] * b;\n return out;\n}\n/**\r\n * Adds two vec2's after scaling the second operand by a scalar value\r\n *\r\n * @param {vec2} out the receiving vector\r\n * @param {vec2} a the first operand\r\n * @param {vec2} b the second operand\r\n * @param {Number} scale the amount to scale b by before adding\r\n * @returns {vec2} out\r\n */\n\nexport function scaleAndAdd(out, a, b, scale) {\n out[0] = a[0] + b[0] * scale;\n out[1] = a[1] + b[1] * scale;\n return out;\n}\n/**\r\n * Calculates the euclidian distance between two vec2's\r\n *\r\n * @param {vec2} a the first operand\r\n * @param {vec2} b the second operand\r\n * @returns {Number} distance between a and b\r\n */\n\nexport function distance(a, b) {\n var x = b[0] - a[0],\n y = b[1] - a[1];\n return Math.hypot(x, y);\n}\n/**\r\n * Calculates the squared euclidian distance between two vec2's\r\n *\r\n * @param {vec2} a the first operand\r\n * @param {vec2} b the second operand\r\n * @returns {Number} squared distance between a and b\r\n */\n\nexport function squaredDistance(a, b) {\n var x = b[0] - a[0],\n y = b[1] - a[1];\n return x * x + y * y;\n}\n/**\r\n * Calculates the length of a vec2\r\n *\r\n * @param {vec2} a vector to calculate length of\r\n * @returns {Number} length of a\r\n */\n\nexport function length(a) {\n var x = a[0],\n y = a[1];\n return Math.hypot(x, y);\n}\n/**\r\n * Calculates the squared length of a vec2\r\n *\r\n * @param {vec2} a vector to calculate squared length of\r\n * @returns {Number} squared length of a\r\n */\n\nexport function squaredLength(a) {\n var x = a[0],\n y = a[1];\n return x * x + y * y;\n}\n/**\r\n * Negates the components of a vec2\r\n *\r\n * @param {vec2} out the receiving vector\r\n * @param {vec2} a vector to negate\r\n * @returns {vec2} out\r\n */\n\nexport function negate(out, a) {\n out[0] = -a[0];\n out[1] = -a[1];\n return out;\n}\n/**\r\n * Returns the inverse of the components of a vec2\r\n *\r\n * @param {vec2} out the receiving vector\r\n * @param {vec2} a vector to invert\r\n * @returns {vec2} out\r\n */\n\nexport function inverse(out, a) {\n out[0] = 1.0 / a[0];\n out[1] = 1.0 / a[1];\n return out;\n}\n/**\r\n * Normalize a vec2\r\n *\r\n * @param {vec2} out the receiving vector\r\n * @param {vec2} a vector to normalize\r\n * @returns {vec2} out\r\n */\n\nexport function normalize(out, a) {\n var x = a[0],\n y = a[1];\n var len = x * x + y * y;\n\n if (len > 0) {\n //TODO: evaluate use of glm_invsqrt here?\n len = 1 / Math.sqrt(len);\n }\n\n out[0] = a[0] * len;\n out[1] = a[1] * len;\n return out;\n}\n/**\r\n * Calculates the dot product of two vec2's\r\n *\r\n * @param {vec2} a the first operand\r\n * @param {vec2} b the second operand\r\n * @returns {Number} dot product of a and b\r\n */\n\nexport function dot(a, b) {\n return a[0] * b[0] + a[1] * b[1];\n}\n/**\r\n * Computes the cross product of two vec2's\r\n * Note that the cross product must by definition produce a 3D vector\r\n *\r\n * @param {vec3} out the receiving vector\r\n * @param {vec2} a the first operand\r\n * @param {vec2} b the second operand\r\n * @returns {vec3} out\r\n */\n\nexport function cross(out, a, b) {\n var z = a[0] * b[1] - a[1] * b[0];\n out[0] = out[1] = 0;\n out[2] = z;\n return out;\n}\n/**\r\n * Performs a linear interpolation between two vec2's\r\n *\r\n * @param {vec2} out the receiving vector\r\n * @param {vec2} a the first operand\r\n * @param {vec2} b the second operand\r\n * @param {Number} t interpolation amount, in the range [0-1], between the two inputs\r\n * @returns {vec2} out\r\n */\n\nexport function lerp(out, a, b, t) {\n var ax = a[0],\n ay = a[1];\n out[0] = ax + t * (b[0] - ax);\n out[1] = ay + t * (b[1] - ay);\n return out;\n}\n/**\r\n * Generates a random vector with the given scale\r\n *\r\n * @param {vec2} out the receiving vector\r\n * @param {Number} [scale] Length of the resulting vector. If ommitted, a unit vector will be returned\r\n * @returns {vec2} out\r\n */\n\nexport function random(out, scale) {\n scale = scale || 1.0;\n var r = glMatrix.RANDOM() * 2.0 * Math.PI;\n out[0] = Math.cos(r) * scale;\n out[1] = Math.sin(r) * scale;\n return out;\n}\n/**\r\n * Transforms the vec2 with a mat2\r\n *\r\n * @param {vec2} out the receiving vector\r\n * @param {vec2} a the vector to transform\r\n * @param {mat2} m matrix to transform with\r\n * @returns {vec2} out\r\n */\n\nexport function transformMat2(out, a, m) {\n var x = a[0],\n y = a[1];\n out[0] = m[0] * x + m[2] * y;\n out[1] = m[1] * x + m[3] * y;\n return out;\n}\n/**\r\n * Transforms the vec2 with a mat2d\r\n *\r\n * @param {vec2} out the receiving vector\r\n * @param {vec2} a the vector to transform\r\n * @param {mat2d} m matrix to transform with\r\n * @returns {vec2} out\r\n */\n\nexport function transformMat2d(out, a, m) {\n var x = a[0],\n y = a[1];\n out[0] = m[0] * x + m[2] * y + m[4];\n out[1] = m[1] * x + m[3] * y + m[5];\n return out;\n}\n/**\r\n * Transforms the vec2 with a mat3\r\n * 3rd vector component is implicitly '1'\r\n *\r\n * @param {vec2} out the receiving vector\r\n * @param {vec2} a the vector to transform\r\n * @param {mat3} m matrix to transform with\r\n * @returns {vec2} out\r\n */\n\nexport function transformMat3(out, a, m) {\n var x = a[0],\n y = a[1];\n out[0] = m[0] * x + m[3] * y + m[6];\n out[1] = m[1] * x + m[4] * y + m[7];\n return out;\n}\n/**\r\n * Transforms the vec2 with a mat4\r\n * 3rd vector component is implicitly '0'\r\n * 4th vector component is implicitly '1'\r\n *\r\n * @param {vec2} out the receiving vector\r\n * @param {vec2} a the vector to transform\r\n * @param {mat4} m matrix to transform with\r\n * @returns {vec2} out\r\n */\n\nexport function transformMat4(out, a, m) {\n var x = a[0];\n var y = a[1];\n out[0] = m[0] * x + m[4] * y + m[12];\n out[1] = m[1] * x + m[5] * y + m[13];\n return out;\n}\n/**\r\n * Rotate a 2D vector\r\n * @param {vec2} out The receiving vec2\r\n * @param {vec2} a The vec2 point to rotate\r\n * @param {vec2} b The origin of the rotation\r\n * @param {Number} rad The angle of rotation in radians\r\n * @returns {vec2} out\r\n */\n\nexport function rotate(out, a, b, rad) {\n //Translate point to the origin\n var p0 = a[0] - b[0],\n p1 = a[1] - b[1],\n sinC = Math.sin(rad),\n cosC = Math.cos(rad); //perform rotation and translate to correct position\n\n out[0] = p0 * cosC - p1 * sinC + b[0];\n out[1] = p0 * sinC + p1 * cosC + b[1];\n return out;\n}\n/**\r\n * Get the angle between two 2D vectors\r\n * @param {vec2} a The first operand\r\n * @param {vec2} b The second operand\r\n * @returns {Number} The angle in radians\r\n */\n\nexport function angle(a, b) {\n var x1 = a[0],\n y1 = a[1],\n x2 = b[0],\n y2 = b[1],\n // mag is the product of the magnitudes of a and b\n mag = Math.sqrt(x1 * x1 + y1 * y1) * Math.sqrt(x2 * x2 + y2 * y2),\n // mag &&.. short circuits if mag == 0\n cosine = mag && (x1 * x2 + y1 * y2) / mag; // Math.min(Math.max(cosine, -1), 1) clamps the cosine between -1 and 1\n\n return Math.acos(Math.min(Math.max(cosine, -1), 1));\n}\n/**\r\n * Set the components of a vec2 to zero\r\n *\r\n * @param {vec2} out the receiving vector\r\n * @returns {vec2} out\r\n */\n\nexport function zero(out) {\n out[0] = 0.0;\n out[1] = 0.0;\n return out;\n}\n/**\r\n * Returns a string representation of a vector\r\n *\r\n * @param {vec2} a vector to represent as a string\r\n * @returns {String} string representation of the vector\r\n */\n\nexport function str(a) {\n return \"vec2(\" + a[0] + \", \" + a[1] + \")\";\n}\n/**\r\n * Returns whether or not the vectors exactly have the same elements in the same position (when compared with ===)\r\n *\r\n * @param {vec2} a The first vector.\r\n * @param {vec2} b The second vector.\r\n * @returns {Boolean} True if the vectors are equal, false otherwise.\r\n */\n\nexport function exactEquals(a, b) {\n return a[0] === b[0] && a[1] === b[1];\n}\n/**\r\n * Returns whether or not the vectors have approximately the same elements in the same position.\r\n *\r\n * @param {vec2} a The first vector.\r\n * @param {vec2} b The second vector.\r\n * @returns {Boolean} True if the vectors are equal, false otherwise.\r\n */\n\nexport function equals(a, b) {\n var a0 = a[0],\n a1 = a[1];\n var b0 = b[0],\n b1 = b[1];\n return Math.abs(a0 - b0) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a0), Math.abs(b0)) && Math.abs(a1 - b1) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a1), Math.abs(b1));\n}\n/**\r\n * Alias for {@link vec2.length}\r\n * @function\r\n */\n\nexport var len = length;\n/**\r\n * Alias for {@link vec2.subtract}\r\n * @function\r\n */\n\nexport var sub = subtract;\n/**\r\n * Alias for {@link vec2.multiply}\r\n * @function\r\n */\n\nexport var mul = multiply;\n/**\r\n * Alias for {@link vec2.divide}\r\n * @function\r\n */\n\nexport var div = divide;\n/**\r\n * Alias for {@link vec2.distance}\r\n * @function\r\n */\n\nexport var dist = distance;\n/**\r\n * Alias for {@link vec2.squaredDistance}\r\n * @function\r\n */\n\nexport var sqrDist = squaredDistance;\n/**\r\n * Alias for {@link vec2.squaredLength}\r\n * @function\r\n */\n\nexport var sqrLen = squaredLength;\n/**\r\n * Perform some operation over an array of vec2s.\r\n *\r\n * @param {Array} a the array of vectors to iterate over\r\n * @param {Number} stride Number of elements between the start of each vec2. If 0 assumes tightly packed\r\n * @param {Number} offset Number of elements to skip at the beginning of the array\r\n * @param {Number} count Number of vec2s to iterate over. If 0 iterates over entire array\r\n * @param {Function} fn Function to call for each vector in the array\r\n * @param {Object} [arg] additional argument to pass to fn\r\n * @returns {Array} a\r\n * @function\r\n */\n\nexport var forEach = function () {\n var vec = create();\n return function (a, stride, offset, count, fn, arg) {\n var i, l;\n\n if (!stride) {\n stride = 2;\n }\n\n if (!offset) {\n offset = 0;\n }\n\n if (count) {\n l = Math.min(count * stride + offset, a.length);\n } else {\n l = a.length;\n }\n\n for (i = offset; i < l; i += stride) {\n vec[0] = a[i];\n vec[1] = a[i + 1];\n fn(vec, vec, arg);\n a[i] = vec[0];\n a[i + 1] = vec[1];\n }\n\n return a;\n };\n}();", "// @flow\n\nimport CircleBucket from './circle_bucket';\n\nimport {register} from '../../util/web_worker_transfer';\n\nimport type HeatmapStyleLayer from '../../style/style_layer/heatmap_style_layer';\n\nclass HeatmapBucket extends CircleBucket {\n // Needed for flow to accept omit: ['layers'] below, due to\n // https://github.com/facebook/flow/issues/4262\n layers: Array;\n}\n\nregister('HeatmapBucket', HeatmapBucket, {omit: ['layers']});\n\nexport default HeatmapBucket;\n", "// @flow\n\nimport assert from 'assert';\n\nimport {register} from './web_worker_transfer';\n\nexport type Size = {\n width: number,\n height: number\n};\n\ntype Point = {\n x: number,\n y: number\n};\n\nfunction createImage(image: *, {width, height}: Size, channels: number, data?: Uint8Array | Uint8ClampedArray) {\n if (!data) {\n data = new Uint8Array(width * height * channels);\n } else if (data instanceof Uint8ClampedArray) {\n data = new Uint8Array(data.buffer);\n } else if (data.length !== width * height * channels) {\n throw new RangeError('mismatched image size');\n }\n image.width = width;\n image.height = height;\n image.data = data;\n return image;\n}\n\nfunction resizeImage(image: *, {width, height}: Size, channels: number) {\n if (width === image.width && height === image.height) {\n return;\n }\n\n const newImage = createImage({}, {width, height}, channels);\n\n copyImage(image, newImage, {x: 0, y: 0}, {x: 0, y: 0}, {\n width: Math.min(image.width, width),\n height: Math.min(image.height, height)\n }, channels);\n\n image.width = width;\n image.height = height;\n image.data = newImage.data;\n}\n\nfunction copyImage(srcImg: *, dstImg: *, srcPt: Point, dstPt: Point, size: Size, channels: number) {\n if (size.width === 0 || size.height === 0) {\n return dstImg;\n }\n\n if (size.width > srcImg.width ||\n size.height > srcImg.height ||\n srcPt.x > srcImg.width - size.width ||\n srcPt.y > srcImg.height - size.height) {\n throw new RangeError('out of range source coordinates for image copy');\n }\n\n if (size.width > dstImg.width ||\n size.height > dstImg.height ||\n dstPt.x > dstImg.width - size.width ||\n dstPt.y > dstImg.height - size.height) {\n throw new RangeError('out of range destination coordinates for image copy');\n }\n\n const srcData = srcImg.data;\n const dstData = dstImg.data;\n\n assert(srcData !== dstData);\n\n for (let y = 0; y < size.height; y++) {\n const srcOffset = ((srcPt.y + y) * srcImg.width + srcPt.x) * channels;\n const dstOffset = ((dstPt.y + y) * dstImg.width + dstPt.x) * channels;\n for (let i = 0; i < size.width * channels; i++) {\n dstData[dstOffset + i] = srcData[srcOffset + i];\n }\n }\n return dstImg;\n}\n\nexport class AlphaImage {\n width: number;\n height: number;\n data: Uint8Array;\n\n constructor(size: Size, data?: Uint8Array | Uint8ClampedArray) {\n createImage(this, size, 1, data);\n }\n\n resize(size: Size) {\n resizeImage(this, size, 1);\n }\n\n clone() {\n return new AlphaImage({width: this.width, height: this.height}, new Uint8Array(this.data));\n }\n\n static copy(srcImg: AlphaImage, dstImg: AlphaImage, srcPt: Point, dstPt: Point, size: Size) {\n copyImage(srcImg, dstImg, srcPt, dstPt, size, 1);\n }\n}\n\n// Not premultiplied, because ImageData is not premultiplied.\n// UNPACK_PREMULTIPLY_ALPHA_WEBGL must be used when uploading to a texture.\nexport class RGBAImage {\n width: number;\n height: number;\n\n // data must be a Uint8Array instead of Uint8ClampedArray because texImage2D does not\n // support Uint8ClampedArray in all browsers\n data: Uint8Array;\n\n constructor(size: Size, data?: Uint8Array | Uint8ClampedArray) {\n createImage(this, size, 4, data);\n }\n\n resize(size: Size) {\n resizeImage(this, size, 4);\n }\n\n replace(data: Uint8Array | Uint8ClampedArray, copy?: boolean) {\n if (copy) {\n this.data.set(data);\n } else if (data instanceof Uint8ClampedArray) {\n this.data = new Uint8Array(data.buffer);\n } else {\n this.data = data;\n }\n }\n\n clone() {\n return new RGBAImage({width: this.width, height: this.height}, new Uint8Array(this.data));\n }\n\n static copy(srcImg: RGBAImage | ImageData, dstImg: RGBAImage, srcPt: Point, dstPt: Point, size: Size) {\n copyImage(srcImg, dstImg, srcPt, dstPt, size, 4);\n }\n}\n\nregister('AlphaImage', AlphaImage);\nregister('RGBAImage', RGBAImage);\n", "// This file is generated. Edit build/generate-style-code.js, then run `yarn run codegen`.\n// @flow\n/* eslint-disable */\n\nimport styleSpec from '../../style-spec/reference/latest';\n\nimport {\n Properties,\n DataConstantProperty,\n DataDrivenProperty,\n CrossFadedDataDrivenProperty,\n CrossFadedProperty,\n ColorRampProperty\n} from '../properties';\n\nimport type Color from '../../style-spec/util/color';\n\nimport type Formatted from '../../style-spec/expression/types/formatted';\n\nimport type ResolvedImage from '../../style-spec/expression/types/resolved_image';\n\n\nexport type PaintProps = {|\n \"heatmap-radius\": DataDrivenProperty,\n \"heatmap-weight\": DataDrivenProperty,\n \"heatmap-intensity\": DataConstantProperty,\n \"heatmap-color\": ColorRampProperty,\n \"heatmap-opacity\": DataConstantProperty,\n|};\n\nconst paint: Properties = new Properties({\n \"heatmap-radius\": new DataDrivenProperty(styleSpec[\"paint_heatmap\"][\"heatmap-radius\"]),\n \"heatmap-weight\": new DataDrivenProperty(styleSpec[\"paint_heatmap\"][\"heatmap-weight\"]),\n \"heatmap-intensity\": new DataConstantProperty(styleSpec[\"paint_heatmap\"][\"heatmap-intensity\"]),\n \"heatmap-color\": new ColorRampProperty(styleSpec[\"paint_heatmap\"][\"heatmap-color\"]),\n \"heatmap-opacity\": new DataConstantProperty(styleSpec[\"paint_heatmap\"][\"heatmap-opacity\"]),\n});\n\n// Note: without adding the explicit type annotation, Flow infers weaker types\n// for these objects from their use in the constructor to StyleLayer, as\n// {layout?: Properties<...>, paint: Properties<...>}\nexport default ({ paint }: $Exact<{\n paint: Properties\n}>);\n", "// @flow\n\nimport {RGBAImage} from './image';\nimport {isPowerOfTwo} from './util';\nimport assert from 'assert';\n\nimport type {StylePropertyExpression} from '../style-spec/expression/index';\n\nexport type ColorRampParams = {\n expression: StylePropertyExpression;\n evaluationKey: string;\n resolution?: number;\n image?: RGBAImage;\n clips?: Array;\n}\n\n/**\n * Given an expression that should evaluate to a color ramp,\n * return a RGBA image representing that ramp expression.\n *\n * @private\n */\nexport function renderColorRamp(params: ColorRampParams): RGBAImage {\n const evaluationGlobals = {};\n const width = params.resolution || 256;\n const height = params.clips ? params.clips.length : 1;\n const image = params.image || new RGBAImage({width, height});\n\n assert(isPowerOfTwo(width));\n\n const renderPixel = (stride, index, progress) => {\n evaluationGlobals[params.evaluationKey] = progress;\n const pxColor = params.expression.evaluate((evaluationGlobals: any));\n // the colors are being unpremultiplied because Color uses\n // premultiplied values, and the Texture class expects unpremultiplied ones\n image.data[stride + index + 0] = Math.floor(pxColor.r * 255 / pxColor.a);\n image.data[stride + index + 1] = Math.floor(pxColor.g * 255 / pxColor.a);\n image.data[stride + index + 2] = Math.floor(pxColor.b * 255 / pxColor.a);\n image.data[stride + index + 3] = Math.floor(pxColor.a * 255);\n };\n\n if (!params.clips) {\n for (let i = 0, j = 0; i < width; i++, j += 4) {\n const progress = i / (width - 1);\n\n renderPixel(0, j, progress);\n }\n } else {\n for (let clip = 0, stride = 0; clip < height; ++clip, stride += width * 4) {\n for (let i = 0, j = 0; i < width; i++, j += 4) {\n // Remap progress between clips\n const progress = i / (width - 1);\n const {start, end} = params.clips[clip];\n const evaluationProgress = start * (1 - progress) + end * progress;\n renderPixel(stride, j, evaluationProgress);\n }\n }\n }\n\n return image;\n}\n", "// @flow\n\nimport StyleLayer from '../style_layer';\n\nimport HeatmapBucket from '../../data/bucket/heatmap_bucket';\nimport {RGBAImage} from '../../util/image';\nimport properties from './heatmap_style_layer_properties';\nimport {renderColorRamp} from '../../util/color_ramp';\nimport {Transitionable, Transitioning, PossiblyEvaluated} from '../properties';\n\nimport type Texture from '../../render/texture';\nimport type Framebuffer from '../../gl/framebuffer';\nimport type {PaintProps} from './heatmap_style_layer_properties';\nimport type {LayerSpecification} from '../../style-spec/types';\n\nclass HeatmapStyleLayer extends StyleLayer {\n\n heatmapFbo: ?Framebuffer;\n colorRamp: RGBAImage;\n colorRampTexture: ?Texture;\n\n _transitionablePaint: Transitionable;\n _transitioningPaint: Transitioning;\n paint: PossiblyEvaluated;\n\n createBucket(options: any) {\n return new HeatmapBucket(options);\n }\n\n constructor(layer: LayerSpecification) {\n super(layer, properties);\n\n // make sure color ramp texture is generated for default heatmap color too\n this._updateColorRamp();\n }\n\n _handleSpecialPaintPropertyUpdate(name: string) {\n if (name === 'heatmap-color') {\n this._updateColorRamp();\n }\n }\n\n _updateColorRamp() {\n const expression = this._transitionablePaint._values['heatmap-color'].value.expression;\n this.colorRamp = renderColorRamp({\n expression,\n evaluationKey: 'heatmapDensity',\n image: this.colorRamp\n });\n this.colorRampTexture = null;\n }\n\n resize() {\n if (this.heatmapFbo) {\n this.heatmapFbo.destroy();\n this.heatmapFbo = null;\n }\n }\n\n queryRadius(): number {\n return 0;\n }\n\n queryIntersectsFeature(): boolean {\n return false;\n }\n\n hasOffscreenPass() {\n return this.paint.get('heatmap-opacity') !== 0 && this.visibility !== 'none';\n }\n}\n\nexport default HeatmapStyleLayer;\n", "// This file is generated. Edit build/generate-style-code.js, then run `yarn run codegen`.\n// @flow\n/* eslint-disable */\n\nimport styleSpec from '../../style-spec/reference/latest';\n\nimport {\n Properties,\n DataConstantProperty,\n DataDrivenProperty,\n CrossFadedDataDrivenProperty,\n CrossFadedProperty,\n ColorRampProperty\n} from '../properties';\n\nimport type Color from '../../style-spec/util/color';\n\nimport type Formatted from '../../style-spec/expression/types/formatted';\n\nimport type ResolvedImage from '../../style-spec/expression/types/resolved_image';\n\n\nexport type PaintProps = {|\n \"hillshade-illumination-direction\": DataConstantProperty,\n \"hillshade-illumination-anchor\": DataConstantProperty<\"map\" | \"viewport\">,\n \"hillshade-exaggeration\": DataConstantProperty,\n \"hillshade-shadow-color\": DataConstantProperty,\n \"hillshade-highlight-color\": DataConstantProperty,\n \"hillshade-accent-color\": DataConstantProperty,\n|};\n\nconst paint: Properties = new Properties({\n \"hillshade-illumination-direction\": new DataConstantProperty(styleSpec[\"paint_hillshade\"][\"hillshade-illumination-direction\"]),\n \"hillshade-illumination-anchor\": new DataConstantProperty(styleSpec[\"paint_hillshade\"][\"hillshade-illumination-anchor\"]),\n \"hillshade-exaggeration\": new DataConstantProperty(styleSpec[\"paint_hillshade\"][\"hillshade-exaggeration\"]),\n \"hillshade-shadow-color\": new DataConstantProperty(styleSpec[\"paint_hillshade\"][\"hillshade-shadow-color\"]),\n \"hillshade-highlight-color\": new DataConstantProperty(styleSpec[\"paint_hillshade\"][\"hillshade-highlight-color\"]),\n \"hillshade-accent-color\": new DataConstantProperty(styleSpec[\"paint_hillshade\"][\"hillshade-accent-color\"]),\n});\n\n// Note: without adding the explicit type annotation, Flow infers weaker types\n// for these objects from their use in the constructor to StyleLayer, as\n// {layout?: Properties<...>, paint: Properties<...>}\nexport default ({ paint }: $Exact<{\n paint: Properties\n}>);\n", "// @flow\n\nimport StyleLayer from '../style_layer';\n\nimport properties from './hillshade_style_layer_properties';\nimport {Transitionable, Transitioning, PossiblyEvaluated} from '../properties';\n\nimport type {PaintProps} from './hillshade_style_layer_properties';\nimport type {LayerSpecification} from '../../style-spec/types';\n\nclass HillshadeStyleLayer extends StyleLayer {\n _transitionablePaint: Transitionable;\n _transitioningPaint: Transitioning;\n paint: PossiblyEvaluated;\n\n constructor(layer: LayerSpecification) {\n super(layer, properties);\n }\n\n hasOffscreenPass() {\n return this.paint.get('hillshade-exaggeration') !== 0 && this.visibility !== 'none';\n }\n}\n\nexport default HillshadeStyleLayer;\n", "// @flow\nimport {createLayout} from '../../util/struct_array';\n\nconst layout = createLayout([\n {name: 'a_pos', components: 2, type: 'Int16'}\n], 4);\n\nexport default layout;\nexport const {members, size, alignment} = layout;\n", "'use strict';\n\nmodule.exports = earcut;\nmodule.exports.default = earcut;\n\nfunction earcut(data, holeIndices, dim) {\n\n dim = dim || 2;\n\n var hasHoles = holeIndices && holeIndices.length,\n outerLen = hasHoles ? holeIndices[0] * dim : data.length,\n outerNode = linkedList(data, 0, outerLen, dim, true),\n triangles = [];\n\n if (!outerNode || outerNode.next === outerNode.prev) return triangles;\n\n var minX, minY, maxX, maxY, x, y, invSize;\n\n if (hasHoles) outerNode = eliminateHoles(data, holeIndices, outerNode, dim);\n\n // if the shape is not too simple, we'll use z-order curve hash later; calculate polygon bbox\n if (data.length > 80 * dim) {\n minX = maxX = data[0];\n minY = maxY = data[1];\n\n for (var i = dim; i < outerLen; i += dim) {\n x = data[i];\n y = data[i + 1];\n if (x < minX) minX = x;\n if (y < minY) minY = y;\n if (x > maxX) maxX = x;\n if (y > maxY) maxY = y;\n }\n\n // minX, minY and invSize are later used to transform coords into integers for z-order calculation\n invSize = Math.max(maxX - minX, maxY - minY);\n invSize = invSize !== 0 ? 1 / invSize : 0;\n }\n\n earcutLinked(outerNode, triangles, dim, minX, minY, invSize);\n\n return triangles;\n}\n\n// create a circular doubly linked list from polygon points in the specified winding order\nfunction linkedList(data, start, end, dim, clockwise) {\n var i, last;\n\n if (clockwise === (signedArea(data, start, end, dim) > 0)) {\n for (i = start; i < end; i += dim) last = insertNode(i, data[i], data[i + 1], last);\n } else {\n for (i = end - dim; i >= start; i -= dim) last = insertNode(i, data[i], data[i + 1], last);\n }\n\n if (last && equals(last, last.next)) {\n removeNode(last);\n last = last.next;\n }\n\n return last;\n}\n\n// eliminate colinear or duplicate points\nfunction filterPoints(start, end) {\n if (!start) return start;\n if (!end) end = start;\n\n var p = start,\n again;\n do {\n again = false;\n\n if (!p.steiner && (equals(p, p.next) || area(p.prev, p, p.next) === 0)) {\n removeNode(p);\n p = end = p.prev;\n if (p === p.next) break;\n again = true;\n\n } else {\n p = p.next;\n }\n } while (again || p !== end);\n\n return end;\n}\n\n// main ear slicing loop which triangulates a polygon (given as a linked list)\nfunction earcutLinked(ear, triangles, dim, minX, minY, invSize, pass) {\n if (!ear) return;\n\n // interlink polygon nodes in z-order\n if (!pass && invSize) indexCurve(ear, minX, minY, invSize);\n\n var stop = ear,\n prev, next;\n\n // iterate through ears, slicing them one by one\n while (ear.prev !== ear.next) {\n prev = ear.prev;\n next = ear.next;\n\n if (invSize ? isEarHashed(ear, minX, minY, invSize) : isEar(ear)) {\n // cut off the triangle\n triangles.push(prev.i / dim);\n triangles.push(ear.i / dim);\n triangles.push(next.i / dim);\n\n removeNode(ear);\n\n // skipping the next vertex leads to less sliver triangles\n ear = next.next;\n stop = next.next;\n\n continue;\n }\n\n ear = next;\n\n // if we looped through the whole remaining polygon and can't find any more ears\n if (ear === stop) {\n // try filtering points and slicing again\n if (!pass) {\n earcutLinked(filterPoints(ear), triangles, dim, minX, minY, invSize, 1);\n\n // if this didn't work, try curing all small self-intersections locally\n } else if (pass === 1) {\n ear = cureLocalIntersections(filterPoints(ear), triangles, dim);\n earcutLinked(ear, triangles, dim, minX, minY, invSize, 2);\n\n // as a last resort, try splitting the remaining polygon into two\n } else if (pass === 2) {\n splitEarcut(ear, triangles, dim, minX, minY, invSize);\n }\n\n break;\n }\n }\n}\n\n// check whether a polygon node forms a valid ear with adjacent nodes\nfunction isEar(ear) {\n var a = ear.prev,\n b = ear,\n c = ear.next;\n\n if (area(a, b, c) >= 0) return false; // reflex, can't be an ear\n\n // now make sure we don't have other points inside the potential ear\n var p = ear.next.next;\n\n while (p !== ear.prev) {\n if (pointInTriangle(a.x, a.y, b.x, b.y, c.x, c.y, p.x, p.y) &&\n area(p.prev, p, p.next) >= 0) return false;\n p = p.next;\n }\n\n return true;\n}\n\nfunction isEarHashed(ear, minX, minY, invSize) {\n var a = ear.prev,\n b = ear,\n c = ear.next;\n\n if (area(a, b, c) >= 0) return false; // reflex, can't be an ear\n\n // triangle bbox; min & max are calculated like this for speed\n var minTX = a.x < b.x ? (a.x < c.x ? a.x : c.x) : (b.x < c.x ? b.x : c.x),\n minTY = a.y < b.y ? (a.y < c.y ? a.y : c.y) : (b.y < c.y ? b.y : c.y),\n maxTX = a.x > b.x ? (a.x > c.x ? a.x : c.x) : (b.x > c.x ? b.x : c.x),\n maxTY = a.y > b.y ? (a.y > c.y ? a.y : c.y) : (b.y > c.y ? b.y : c.y);\n\n // z-order range for the current triangle bbox;\n var minZ = zOrder(minTX, minTY, minX, minY, invSize),\n maxZ = zOrder(maxTX, maxTY, minX, minY, invSize);\n\n var p = ear.prevZ,\n n = ear.nextZ;\n\n // look for points inside the triangle in both directions\n while (p && p.z >= minZ && n && n.z <= maxZ) {\n if (p !== ear.prev && p !== ear.next &&\n pointInTriangle(a.x, a.y, b.x, b.y, c.x, c.y, p.x, p.y) &&\n area(p.prev, p, p.next) >= 0) return false;\n p = p.prevZ;\n\n if (n !== ear.prev && n !== ear.next &&\n pointInTriangle(a.x, a.y, b.x, b.y, c.x, c.y, n.x, n.y) &&\n area(n.prev, n, n.next) >= 0) return false;\n n = n.nextZ;\n }\n\n // look for remaining points in decreasing z-order\n while (p && p.z >= minZ) {\n if (p !== ear.prev && p !== ear.next &&\n pointInTriangle(a.x, a.y, b.x, b.y, c.x, c.y, p.x, p.y) &&\n area(p.prev, p, p.next) >= 0) return false;\n p = p.prevZ;\n }\n\n // look for remaining points in increasing z-order\n while (n && n.z <= maxZ) {\n if (n !== ear.prev && n !== ear.next &&\n pointInTriangle(a.x, a.y, b.x, b.y, c.x, c.y, n.x, n.y) &&\n area(n.prev, n, n.next) >= 0) return false;\n n = n.nextZ;\n }\n\n return true;\n}\n\n// go through all polygon nodes and cure small local self-intersections\nfunction cureLocalIntersections(start, triangles, dim) {\n var p = start;\n do {\n var a = p.prev,\n b = p.next.next;\n\n if (!equals(a, b) && intersects(a, p, p.next, b) && locallyInside(a, b) && locallyInside(b, a)) {\n\n triangles.push(a.i / dim);\n triangles.push(p.i / dim);\n triangles.push(b.i / dim);\n\n // remove two nodes involved\n removeNode(p);\n removeNode(p.next);\n\n p = start = b;\n }\n p = p.next;\n } while (p !== start);\n\n return filterPoints(p);\n}\n\n// try splitting polygon into two and triangulate them independently\nfunction splitEarcut(start, triangles, dim, minX, minY, invSize) {\n // look for a valid diagonal that divides the polygon into two\n var a = start;\n do {\n var b = a.next.next;\n while (b !== a.prev) {\n if (a.i !== b.i && isValidDiagonal(a, b)) {\n // split the polygon in two by the diagonal\n var c = splitPolygon(a, b);\n\n // filter colinear points around the cuts\n a = filterPoints(a, a.next);\n c = filterPoints(c, c.next);\n\n // run earcut on each half\n earcutLinked(a, triangles, dim, minX, minY, invSize);\n earcutLinked(c, triangles, dim, minX, minY, invSize);\n return;\n }\n b = b.next;\n }\n a = a.next;\n } while (a !== start);\n}\n\n// link every hole into the outer loop, producing a single-ring polygon without holes\nfunction eliminateHoles(data, holeIndices, outerNode, dim) {\n var queue = [],\n i, len, start, end, list;\n\n for (i = 0, len = holeIndices.length; i < len; i++) {\n start = holeIndices[i] * dim;\n end = i < len - 1 ? holeIndices[i + 1] * dim : data.length;\n list = linkedList(data, start, end, dim, false);\n if (list === list.next) list.steiner = true;\n queue.push(getLeftmost(list));\n }\n\n queue.sort(compareX);\n\n // process holes from left to right\n for (i = 0; i < queue.length; i++) {\n eliminateHole(queue[i], outerNode);\n outerNode = filterPoints(outerNode, outerNode.next);\n }\n\n return outerNode;\n}\n\nfunction compareX(a, b) {\n return a.x - b.x;\n}\n\n// find a bridge between vertices that connects hole with an outer ring and and link it\nfunction eliminateHole(hole, outerNode) {\n outerNode = findHoleBridge(hole, outerNode);\n if (outerNode) {\n var b = splitPolygon(outerNode, hole);\n\n // filter collinear points around the cuts\n filterPoints(outerNode, outerNode.next);\n filterPoints(b, b.next);\n }\n}\n\n// David Eberly's algorithm for finding a bridge between hole and outer polygon\nfunction findHoleBridge(hole, outerNode) {\n var p = outerNode,\n hx = hole.x,\n hy = hole.y,\n qx = -Infinity,\n m;\n\n // find a segment intersected by a ray from the hole's leftmost point to the left;\n // segment's endpoint with lesser x will be potential connection point\n do {\n if (hy <= p.y && hy >= p.next.y && p.next.y !== p.y) {\n var x = p.x + (hy - p.y) * (p.next.x - p.x) / (p.next.y - p.y);\n if (x <= hx && x > qx) {\n qx = x;\n if (x === hx) {\n if (hy === p.y) return p;\n if (hy === p.next.y) return p.next;\n }\n m = p.x < p.next.x ? p : p.next;\n }\n }\n p = p.next;\n } while (p !== outerNode);\n\n if (!m) return null;\n\n if (hx === qx) return m; // hole touches outer segment; pick leftmost endpoint\n\n // look for points inside the triangle of hole point, segment intersection and endpoint;\n // if there are no points found, we have a valid connection;\n // otherwise choose the point of the minimum angle with the ray as connection point\n\n var stop = m,\n mx = m.x,\n my = m.y,\n tanMin = Infinity,\n tan;\n\n p = m;\n\n do {\n if (hx >= p.x && p.x >= mx && hx !== p.x &&\n pointInTriangle(hy < my ? hx : qx, hy, mx, my, hy < my ? qx : hx, hy, p.x, p.y)) {\n\n tan = Math.abs(hy - p.y) / (hx - p.x); // tangential\n\n if (locallyInside(p, hole) &&\n (tan < tanMin || (tan === tanMin && (p.x > m.x || (p.x === m.x && sectorContainsSector(m, p)))))) {\n m = p;\n tanMin = tan;\n }\n }\n\n p = p.next;\n } while (p !== stop);\n\n return m;\n}\n\n// whether sector in vertex m contains sector in vertex p in the same coordinates\nfunction sectorContainsSector(m, p) {\n return area(m.prev, m, p.prev) < 0 && area(p.next, m, m.next) < 0;\n}\n\n// interlink polygon nodes in z-order\nfunction indexCurve(start, minX, minY, invSize) {\n var p = start;\n do {\n if (p.z === null) p.z = zOrder(p.x, p.y, minX, minY, invSize);\n p.prevZ = p.prev;\n p.nextZ = p.next;\n p = p.next;\n } while (p !== start);\n\n p.prevZ.nextZ = null;\n p.prevZ = null;\n\n sortLinked(p);\n}\n\n// Simon Tatham's linked list merge sort algorithm\n// http://www.chiark.greenend.org.uk/~sgtatham/algorithms/listsort.html\nfunction sortLinked(list) {\n var i, p, q, e, tail, numMerges, pSize, qSize,\n inSize = 1;\n\n do {\n p = list;\n list = null;\n tail = null;\n numMerges = 0;\n\n while (p) {\n numMerges++;\n q = p;\n pSize = 0;\n for (i = 0; i < inSize; i++) {\n pSize++;\n q = q.nextZ;\n if (!q) break;\n }\n qSize = inSize;\n\n while (pSize > 0 || (qSize > 0 && q)) {\n\n if (pSize !== 0 && (qSize === 0 || !q || p.z <= q.z)) {\n e = p;\n p = p.nextZ;\n pSize--;\n } else {\n e = q;\n q = q.nextZ;\n qSize--;\n }\n\n if (tail) tail.nextZ = e;\n else list = e;\n\n e.prevZ = tail;\n tail = e;\n }\n\n p = q;\n }\n\n tail.nextZ = null;\n inSize *= 2;\n\n } while (numMerges > 1);\n\n return list;\n}\n\n// z-order of a point given coords and inverse of the longer side of data bbox\nfunction zOrder(x, y, minX, minY, invSize) {\n // coords are transformed into non-negative 15-bit integer range\n x = 32767 * (x - minX) * invSize;\n y = 32767 * (y - minY) * invSize;\n\n x = (x | (x << 8)) & 0x00FF00FF;\n x = (x | (x << 4)) & 0x0F0F0F0F;\n x = (x | (x << 2)) & 0x33333333;\n x = (x | (x << 1)) & 0x55555555;\n\n y = (y | (y << 8)) & 0x00FF00FF;\n y = (y | (y << 4)) & 0x0F0F0F0F;\n y = (y | (y << 2)) & 0x33333333;\n y = (y | (y << 1)) & 0x55555555;\n\n return x | (y << 1);\n}\n\n// find the leftmost node of a polygon ring\nfunction getLeftmost(start) {\n var p = start,\n leftmost = start;\n do {\n if (p.x < leftmost.x || (p.x === leftmost.x && p.y < leftmost.y)) leftmost = p;\n p = p.next;\n } while (p !== start);\n\n return leftmost;\n}\n\n// check if a point lies within a convex triangle\nfunction pointInTriangle(ax, ay, bx, by, cx, cy, px, py) {\n return (cx - px) * (ay - py) - (ax - px) * (cy - py) >= 0 &&\n (ax - px) * (by - py) - (bx - px) * (ay - py) >= 0 &&\n (bx - px) * (cy - py) - (cx - px) * (by - py) >= 0;\n}\n\n// check if a diagonal between two polygon nodes is valid (lies in polygon interior)\nfunction isValidDiagonal(a, b) {\n return a.next.i !== b.i && a.prev.i !== b.i && !intersectsPolygon(a, b) && // dones't intersect other edges\n (locallyInside(a, b) && locallyInside(b, a) && middleInside(a, b) && // locally visible\n (area(a.prev, a, b.prev) || area(a, b.prev, b)) || // does not create opposite-facing sectors\n equals(a, b) && area(a.prev, a, a.next) > 0 && area(b.prev, b, b.next) > 0); // special zero-length case\n}\n\n// signed area of a triangle\nfunction area(p, q, r) {\n return (q.y - p.y) * (r.x - q.x) - (q.x - p.x) * (r.y - q.y);\n}\n\n// check if two points are equal\nfunction equals(p1, p2) {\n return p1.x === p2.x && p1.y === p2.y;\n}\n\n// check if two segments intersect\nfunction intersects(p1, q1, p2, q2) {\n var o1 = sign(area(p1, q1, p2));\n var o2 = sign(area(p1, q1, q2));\n var o3 = sign(area(p2, q2, p1));\n var o4 = sign(area(p2, q2, q1));\n\n if (o1 !== o2 && o3 !== o4) return true; // general case\n\n if (o1 === 0 && onSegment(p1, p2, q1)) return true; // p1, q1 and p2 are collinear and p2 lies on p1q1\n if (o2 === 0 && onSegment(p1, q2, q1)) return true; // p1, q1 and q2 are collinear and q2 lies on p1q1\n if (o3 === 0 && onSegment(p2, p1, q2)) return true; // p2, q2 and p1 are collinear and p1 lies on p2q2\n if (o4 === 0 && onSegment(p2, q1, q2)) return true; // p2, q2 and q1 are collinear and q1 lies on p2q2\n\n return false;\n}\n\n// for collinear points p, q, r, check if point q lies on segment pr\nfunction onSegment(p, q, r) {\n return q.x <= Math.max(p.x, r.x) && q.x >= Math.min(p.x, r.x) && q.y <= Math.max(p.y, r.y) && q.y >= Math.min(p.y, r.y);\n}\n\nfunction sign(num) {\n return num > 0 ? 1 : num < 0 ? -1 : 0;\n}\n\n// check if a polygon diagonal intersects any polygon segments\nfunction intersectsPolygon(a, b) {\n var p = a;\n do {\n if (p.i !== a.i && p.next.i !== a.i && p.i !== b.i && p.next.i !== b.i &&\n intersects(p, p.next, a, b)) return true;\n p = p.next;\n } while (p !== a);\n\n return false;\n}\n\n// check if a polygon diagonal is locally inside the polygon\nfunction locallyInside(a, b) {\n return area(a.prev, a, a.next) < 0 ?\n area(a, b, a.next) >= 0 && area(a, a.prev, b) >= 0 :\n area(a, b, a.prev) < 0 || area(a, a.next, b) < 0;\n}\n\n// check if the middle point of a polygon diagonal is inside the polygon\nfunction middleInside(a, b) {\n var p = a,\n inside = false,\n px = (a.x + b.x) / 2,\n py = (a.y + b.y) / 2;\n do {\n if (((p.y > py) !== (p.next.y > py)) && p.next.y !== p.y &&\n (px < (p.next.x - p.x) * (py - p.y) / (p.next.y - p.y) + p.x))\n inside = !inside;\n p = p.next;\n } while (p !== a);\n\n return inside;\n}\n\n// link two polygon vertices with a bridge; if the vertices belong to the same ring, it splits polygon into two;\n// if one belongs to the outer ring and another to a hole, it merges it into a single ring\nfunction splitPolygon(a, b) {\n var a2 = new Node(a.i, a.x, a.y),\n b2 = new Node(b.i, b.x, b.y),\n an = a.next,\n bp = b.prev;\n\n a.next = b;\n b.prev = a;\n\n a2.next = an;\n an.prev = a2;\n\n b2.next = a2;\n a2.prev = b2;\n\n bp.next = b2;\n b2.prev = bp;\n\n return b2;\n}\n\n// create a node and optionally link it with previous one (in a circular doubly linked list)\nfunction insertNode(i, x, y, last) {\n var p = new Node(i, x, y);\n\n if (!last) {\n p.prev = p;\n p.next = p;\n\n } else {\n p.next = last.next;\n p.prev = last;\n last.next.prev = p;\n last.next = p;\n }\n return p;\n}\n\nfunction removeNode(p) {\n p.next.prev = p.prev;\n p.prev.next = p.next;\n\n if (p.prevZ) p.prevZ.nextZ = p.nextZ;\n if (p.nextZ) p.nextZ.prevZ = p.prevZ;\n}\n\nfunction Node(i, x, y) {\n // vertex index in coordinates array\n this.i = i;\n\n // vertex coordinates\n this.x = x;\n this.y = y;\n\n // previous and next vertex nodes in a polygon ring\n this.prev = null;\n this.next = null;\n\n // z-order curve value\n this.z = null;\n\n // previous and next nodes in z-order\n this.prevZ = null;\n this.nextZ = null;\n\n // indicates whether this is a steiner point\n this.steiner = false;\n}\n\n// return a percentage difference between the polygon area and its triangulation area;\n// used to verify correctness of triangulation\nearcut.deviation = function (data, holeIndices, dim, triangles) {\n var hasHoles = holeIndices && holeIndices.length;\n var outerLen = hasHoles ? holeIndices[0] * dim : data.length;\n\n var polygonArea = Math.abs(signedArea(data, 0, outerLen, dim));\n if (hasHoles) {\n for (var i = 0, len = holeIndices.length; i < len; i++) {\n var start = holeIndices[i] * dim;\n var end = i < len - 1 ? holeIndices[i + 1] * dim : data.length;\n polygonArea -= Math.abs(signedArea(data, start, end, dim));\n }\n }\n\n var trianglesArea = 0;\n for (i = 0; i < triangles.length; i += 3) {\n var a = triangles[i] * dim;\n var b = triangles[i + 1] * dim;\n var c = triangles[i + 2] * dim;\n trianglesArea += Math.abs(\n (data[a] - data[c]) * (data[b + 1] - data[a + 1]) -\n (data[a] - data[b]) * (data[c + 1] - data[a + 1]));\n }\n\n return polygonArea === 0 && trianglesArea === 0 ? 0 :\n Math.abs((trianglesArea - polygonArea) / polygonArea);\n};\n\nfunction signedArea(data, start, end, dim) {\n var sum = 0;\n for (var i = start, j = end - dim; i < end; i += dim) {\n sum += (data[j] - data[i]) * (data[i + 1] + data[j + 1]);\n j = i;\n }\n return sum;\n}\n\n// turn a polygon in a multi-dimensional array form (e.g. as in GeoJSON) into a form Earcut accepts\nearcut.flatten = function (data) {\n var dim = data[0][0].length,\n result = {vertices: [], holes: [], dimensions: dim},\n holeIndex = 0;\n\n for (var i = 0; i < data.length; i++) {\n for (var j = 0; j < data[i].length; j++) {\n for (var d = 0; d < dim; d++) result.vertices.push(data[i][j][d]);\n }\n if (i > 0) {\n holeIndex += data[i - 1].length;\n result.holes.push(holeIndex);\n }\n }\n return result;\n};\n", "\nexport default function quickselect(arr, k, left, right, compare) {\n quickselectStep(arr, k, left || 0, right || (arr.length - 1), compare || defaultCompare);\n}\n\nfunction quickselectStep(arr, k, left, right, compare) {\n\n while (right > left) {\n if (right - left > 600) {\n var n = right - left + 1;\n var m = k - left + 1;\n var z = Math.log(n);\n var s = 0.5 * Math.exp(2 * z / 3);\n var sd = 0.5 * Math.sqrt(z * s * (n - s) / n) * (m - n / 2 < 0 ? -1 : 1);\n var newLeft = Math.max(left, Math.floor(k - m * s / n + sd));\n var newRight = Math.min(right, Math.floor(k + (n - m) * s / n + sd));\n quickselectStep(arr, k, newLeft, newRight, compare);\n }\n\n var t = arr[k];\n var i = left;\n var j = right;\n\n swap(arr, left, k);\n if (compare(arr[right], t) > 0) swap(arr, left, right);\n\n while (i < j) {\n swap(arr, i, j);\n i++;\n j--;\n while (compare(arr[i], t) < 0) i++;\n while (compare(arr[j], t) > 0) j--;\n }\n\n if (compare(arr[left], t) === 0) swap(arr, left, j);\n else {\n j++;\n swap(arr, j, right);\n }\n\n if (j <= k) left = j + 1;\n if (k <= j) right = j - 1;\n }\n}\n\nfunction swap(arr, i, j) {\n var tmp = arr[i];\n arr[i] = arr[j];\n arr[j] = tmp;\n}\n\nfunction defaultCompare(a, b) {\n return a < b ? -1 : a > b ? 1 : 0;\n}\n", "// @flow\n\nimport quickselect from 'quickselect';\n\nimport {calculateSignedArea} from './util';\n\nimport type Point from '@mapbox/point-geometry';\n\n// classifies an array of rings into polygons with outer rings and holes\nexport default function classifyRings(rings: Array>, maxRings: number) {\n const len = rings.length;\n\n if (len <= 1) return [rings];\n\n const polygons = [];\n let polygon,\n ccw;\n\n for (let i = 0; i < len; i++) {\n const area = calculateSignedArea(rings[i]);\n if (area === 0) continue;\n\n (rings[i]: any).area = Math.abs(area);\n\n if (ccw === undefined) ccw = area < 0;\n\n if (ccw === area < 0) {\n if (polygon) polygons.push(polygon);\n polygon = [rings[i]];\n\n } else {\n (polygon: any).push(rings[i]);\n }\n }\n if (polygon) polygons.push(polygon);\n\n // Earcut performance degrades with the # of rings in a polygon. For this\n // reason, we limit strip out all but the `maxRings` largest rings.\n if (maxRings > 1) {\n for (let j = 0; j < polygons.length; j++) {\n if (polygons[j].length <= maxRings) continue;\n quickselect(polygons[j], maxRings, 1, polygons[j].length - 1, compareAreas);\n polygons[j] = polygons[j].slice(0, maxRings);\n }\n }\n\n return polygons;\n}\n\nfunction compareAreas(a, b) {\n return b.area - a.area;\n}\n", "// @flow\nimport type FillStyleLayer from '../../style/style_layer/fill_style_layer';\nimport type FillExtrusionStyleLayer from '../../style/style_layer/fill_extrusion_style_layer';\nimport type LineStyleLayer from '../../style/style_layer/line_style_layer';\n\nimport type {\n BucketFeature,\n PopulateParameters\n} from '../bucket';\n\ntype PatternStyleLayers =\n Array |\n Array |\n Array;\n\nexport function hasPattern(type: string, layers: PatternStyleLayers, options: PopulateParameters) {\n const patterns = options.patternDependencies;\n let hasPattern = false;\n\n for (const layer of layers) {\n const patternProperty = layer.paint.get(`${type}-pattern`);\n if (!patternProperty.isConstant()) {\n hasPattern = true;\n }\n\n const constantPattern = patternProperty.constantOr(null);\n if (constantPattern) {\n hasPattern = true;\n patterns[constantPattern.to] = true;\n patterns[constantPattern.from] = true;\n }\n }\n\n return hasPattern;\n}\n\nexport function addPatternDependencies(type: string, layers: PatternStyleLayers, patternFeature: BucketFeature, zoom: number, options: PopulateParameters) {\n const patterns = options.patternDependencies;\n for (const layer of layers) {\n const patternProperty = layer.paint.get(`${type}-pattern`);\n\n const patternPropertyValue = patternProperty.value;\n if (patternPropertyValue.kind !== \"constant\") {\n let min = patternPropertyValue.evaluate({zoom: zoom - 1}, patternFeature, {}, options.availableImages);\n let mid = patternPropertyValue.evaluate({zoom}, patternFeature, {}, options.availableImages);\n let max = patternPropertyValue.evaluate({zoom: zoom + 1}, patternFeature, {}, options.availableImages);\n min = min && min.name ? min.name : min;\n mid = mid && mid.name ? mid.name : mid;\n max = max && max.name ? max.name : max;\n // add to patternDependencies\n patterns[min] = true;\n patterns[mid] = true;\n patterns[max] = true;\n\n // save for layout\n patternFeature.patterns[layer.id] = {min, mid, max};\n }\n }\n return patternFeature;\n}\n", "// @flow\n\nimport {FillLayoutArray} from '../array_types';\n\nimport {members as layoutAttributes} from './fill_attributes';\nimport SegmentVector from '../segment';\nimport {ProgramConfigurationSet} from '../program_configuration';\nimport {LineIndexArray, TriangleIndexArray} from '../index_array_type';\nimport earcut from 'earcut';\nimport classifyRings from '../../util/classify_rings';\nimport assert from 'assert';\nconst EARCUT_MAX_RINGS = 500;\nimport {register} from '../../util/web_worker_transfer';\nimport {hasPattern, addPatternDependencies} from './pattern_bucket_features';\nimport loadGeometry from '../load_geometry';\nimport toEvaluationFeature from '../evaluation_feature';\nimport EvaluationParameters from '../../style/evaluation_parameters';\n\nimport type {CanonicalTileID} from '../../source/tile_id';\nimport type {\n Bucket,\n BucketParameters,\n BucketFeature,\n IndexedFeature,\n PopulateParameters\n} from '../bucket';\nimport type FillStyleLayer from '../../style/style_layer/fill_style_layer';\nimport type Context from '../../gl/context';\nimport type IndexBuffer from '../../gl/index_buffer';\nimport type VertexBuffer from '../../gl/vertex_buffer';\nimport type Point from '@mapbox/point-geometry';\nimport type {FeatureStates} from '../../source/source_state';\nimport type {ImagePosition} from '../../render/image_atlas';\n\nclass FillBucket implements Bucket {\n index: number;\n zoom: number;\n overscaling: number;\n layers: Array;\n layerIds: Array;\n stateDependentLayers: Array;\n stateDependentLayerIds: Array;\n patternFeatures: Array;\n\n layoutVertexArray: FillLayoutArray;\n layoutVertexBuffer: VertexBuffer;\n\n indexArray: TriangleIndexArray;\n indexBuffer: IndexBuffer;\n\n indexArray2: LineIndexArray;\n indexBuffer2: IndexBuffer;\n\n hasPattern: boolean;\n programConfigurations: ProgramConfigurationSet;\n segments: SegmentVector;\n segments2: SegmentVector;\n uploaded: boolean;\n\n constructor(options: BucketParameters) {\n this.zoom = options.zoom;\n this.overscaling = options.overscaling;\n this.layers = options.layers;\n this.layerIds = this.layers.map(layer => layer.id);\n this.index = options.index;\n this.hasPattern = false;\n this.patternFeatures = [];\n\n this.layoutVertexArray = new FillLayoutArray();\n this.indexArray = new TriangleIndexArray();\n this.indexArray2 = new LineIndexArray();\n this.programConfigurations = new ProgramConfigurationSet(options.layers, options.zoom);\n this.segments = new SegmentVector();\n this.segments2 = new SegmentVector();\n this.stateDependentLayerIds = this.layers.filter((l) => l.isStateDependent()).map((l) => l.id);\n }\n\n populate(features: Array, options: PopulateParameters, canonical: CanonicalTileID) {\n this.hasPattern = hasPattern('fill', this.layers, options);\n const fillSortKey = this.layers[0].layout.get('fill-sort-key');\n const bucketFeatures = [];\n\n for (const {feature, id, index, sourceLayerIndex} of features) {\n const needGeometry = this.layers[0]._featureFilter.needGeometry;\n const evaluationFeature = toEvaluationFeature(feature, needGeometry);\n\n if (!this.layers[0]._featureFilter.filter(new EvaluationParameters(this.zoom), evaluationFeature, canonical)) continue;\n\n const sortKey = fillSortKey ?\n fillSortKey.evaluate(evaluationFeature, {}, canonical, options.availableImages) :\n undefined;\n\n const bucketFeature: BucketFeature = {\n id,\n properties: feature.properties,\n type: feature.type,\n sourceLayerIndex,\n index,\n geometry: needGeometry ? evaluationFeature.geometry : loadGeometry(feature),\n patterns: {},\n sortKey\n };\n\n bucketFeatures.push(bucketFeature);\n }\n\n if (fillSortKey) {\n bucketFeatures.sort((a, b) => {\n // a.sortKey is always a number when in use\n return ((a.sortKey: any): number) - ((b.sortKey: any): number);\n });\n }\n\n for (const bucketFeature of bucketFeatures) {\n const {geometry, index, sourceLayerIndex} = bucketFeature;\n\n if (this.hasPattern) {\n const patternFeature = addPatternDependencies('fill', this.layers, bucketFeature, this.zoom, options);\n // pattern features are added only once the pattern is loaded into the image atlas\n // so are stored during populate until later updated with positions by tile worker in addFeatures\n this.patternFeatures.push(patternFeature);\n } else {\n this.addFeature(bucketFeature, geometry, index, canonical, {});\n }\n\n const feature = features[index].feature;\n options.featureIndex.insert(feature, geometry, index, sourceLayerIndex, this.index);\n }\n }\n\n update(states: FeatureStates, vtLayer: VectorTileLayer, imagePositions: {[_: string]: ImagePosition}) {\n if (!this.stateDependentLayers.length) return;\n this.programConfigurations.updatePaintArrays(states, vtLayer, this.stateDependentLayers, imagePositions);\n }\n\n addFeatures(options: PopulateParameters, canonical: CanonicalTileID, imagePositions: {[_: string]: ImagePosition}) {\n for (const feature of this.patternFeatures) {\n this.addFeature(feature, feature.geometry, feature.index, canonical, imagePositions);\n }\n }\n\n isEmpty() {\n return this.layoutVertexArray.length === 0;\n }\n\n uploadPending(): boolean {\n return !this.uploaded || this.programConfigurations.needsUpload;\n }\n upload(context: Context) {\n if (!this.uploaded) {\n this.layoutVertexBuffer = context.createVertexBuffer(this.layoutVertexArray, layoutAttributes);\n this.indexBuffer = context.createIndexBuffer(this.indexArray);\n this.indexBuffer2 = context.createIndexBuffer(this.indexArray2);\n }\n this.programConfigurations.upload(context);\n this.uploaded = true;\n }\n\n destroy() {\n if (!this.layoutVertexBuffer) return;\n this.layoutVertexBuffer.destroy();\n this.indexBuffer.destroy();\n this.indexBuffer2.destroy();\n this.programConfigurations.destroy();\n this.segments.destroy();\n this.segments2.destroy();\n }\n\n addFeature(feature: BucketFeature, geometry: Array>, index: number, canonical: CanonicalTileID, imagePositions: {[_: string]: ImagePosition}) {\n for (const polygon of classifyRings(geometry, EARCUT_MAX_RINGS)) {\n let numVertices = 0;\n for (const ring of polygon) {\n numVertices += ring.length;\n }\n\n const triangleSegment = this.segments.prepareSegment(numVertices, this.layoutVertexArray, this.indexArray);\n const triangleIndex = triangleSegment.vertexLength;\n\n const flattened = [];\n const holeIndices = [];\n\n for (const ring of polygon) {\n if (ring.length === 0) {\n continue;\n }\n\n if (ring !== polygon[0]) {\n holeIndices.push(flattened.length / 2);\n }\n\n const lineSegment = this.segments2.prepareSegment(ring.length, this.layoutVertexArray, this.indexArray2);\n const lineIndex = lineSegment.vertexLength;\n\n this.layoutVertexArray.emplaceBack(ring[0].x, ring[0].y);\n this.indexArray2.emplaceBack(lineIndex + ring.length - 1, lineIndex);\n flattened.push(ring[0].x);\n flattened.push(ring[0].y);\n\n for (let i = 1; i < ring.length; i++) {\n this.layoutVertexArray.emplaceBack(ring[i].x, ring[i].y);\n this.indexArray2.emplaceBack(lineIndex + i - 1, lineIndex + i);\n flattened.push(ring[i].x);\n flattened.push(ring[i].y);\n }\n\n lineSegment.vertexLength += ring.length;\n lineSegment.primitiveLength += ring.length;\n }\n\n const indices = earcut(flattened, holeIndices);\n assert(indices.length % 3 === 0);\n\n for (let i = 0; i < indices.length; i += 3) {\n this.indexArray.emplaceBack(\n triangleIndex + indices[i],\n triangleIndex + indices[i + 1],\n triangleIndex + indices[i + 2]);\n }\n\n triangleSegment.vertexLength += numVertices;\n triangleSegment.primitiveLength += indices.length / 3;\n }\n this.programConfigurations.populatePaintArrays(this.layoutVertexArray.length, feature, index, imagePositions, canonical);\n }\n}\n\nregister('FillBucket', FillBucket, {omit: ['layers', 'patternFeatures']});\n\nexport default FillBucket;\n", "// This file is generated. Edit build/generate-style-code.js, then run `yarn run codegen`.\n// @flow\n/* eslint-disable */\n\nimport styleSpec from '../../style-spec/reference/latest';\n\nimport {\n Properties,\n DataConstantProperty,\n DataDrivenProperty,\n CrossFadedDataDrivenProperty,\n CrossFadedProperty,\n ColorRampProperty\n} from '../properties';\n\nimport type Color from '../../style-spec/util/color';\n\nimport type Formatted from '../../style-spec/expression/types/formatted';\n\nimport type ResolvedImage from '../../style-spec/expression/types/resolved_image';\n\nexport type LayoutProps = {|\n \"fill-sort-key\": DataDrivenProperty,\n|};\n\nconst layout: Properties = new Properties({\n \"fill-sort-key\": new DataDrivenProperty(styleSpec[\"layout_fill\"][\"fill-sort-key\"]),\n});\n\nexport type PaintProps = {|\n \"fill-antialias\": DataConstantProperty,\n \"fill-opacity\": DataDrivenProperty,\n \"fill-color\": DataDrivenProperty,\n \"fill-outline-color\": DataDrivenProperty,\n \"fill-translate\": DataConstantProperty<[number, number]>,\n \"fill-translate-anchor\": DataConstantProperty<\"map\" | \"viewport\">,\n \"fill-pattern\": CrossFadedDataDrivenProperty,\n|};\n\nconst paint: Properties = new Properties({\n \"fill-antialias\": new DataConstantProperty(styleSpec[\"paint_fill\"][\"fill-antialias\"]),\n \"fill-opacity\": new DataDrivenProperty(styleSpec[\"paint_fill\"][\"fill-opacity\"]),\n \"fill-color\": new DataDrivenProperty(styleSpec[\"paint_fill\"][\"fill-color\"]),\n \"fill-outline-color\": new DataDrivenProperty(styleSpec[\"paint_fill\"][\"fill-outline-color\"]),\n \"fill-translate\": new DataConstantProperty(styleSpec[\"paint_fill\"][\"fill-translate\"]),\n \"fill-translate-anchor\": new DataConstantProperty(styleSpec[\"paint_fill\"][\"fill-translate-anchor\"]),\n \"fill-pattern\": new CrossFadedDataDrivenProperty(styleSpec[\"paint_fill\"][\"fill-pattern\"]),\n});\n\n// Note: without adding the explicit type annotation, Flow infers weaker types\n// for these objects from their use in the constructor to StyleLayer, as\n// {layout?: Properties<...>, paint: Properties<...>}\nexport default ({ paint, layout }: $Exact<{\n paint: Properties, layout: Properties\n}>);\n", "// @flow\n\nimport StyleLayer from '../style_layer';\n\nimport FillBucket from '../../data/bucket/fill_bucket';\nimport {polygonIntersectsMultiPolygon} from '../../util/intersection_tests';\nimport {translateDistance, translate} from '../query_utils';\nimport properties from './fill_style_layer_properties';\nimport {Transitionable, Transitioning, Layout, PossiblyEvaluated} from '../properties';\n\nimport type {FeatureState} from '../../style-spec/expression';\nimport type {BucketParameters} from '../../data/bucket';\nimport type Point from '@mapbox/point-geometry';\nimport type {LayoutProps, PaintProps} from './fill_style_layer_properties';\nimport type EvaluationParameters from '../evaluation_parameters';\nimport type Transform from '../../geo/transform';\nimport type {LayerSpecification} from '../../style-spec/types';\n\nclass FillStyleLayer extends StyleLayer {\n _unevaluatedLayout: Layout;\n layout: PossiblyEvaluated;\n\n _transitionablePaint: Transitionable;\n _transitioningPaint: Transitioning;\n paint: PossiblyEvaluated;\n\n constructor(layer: LayerSpecification) {\n super(layer, properties);\n }\n\n recalculate(parameters: EvaluationParameters, availableImages: Array) {\n super.recalculate(parameters, availableImages);\n\n const outlineColor = this.paint._values['fill-outline-color'];\n if (outlineColor.value.kind === 'constant' && outlineColor.value.value === undefined) {\n this.paint._values['fill-outline-color'] = this.paint._values['fill-color'];\n }\n }\n\n createBucket(parameters: BucketParameters<*>) {\n return new FillBucket(parameters);\n }\n\n queryRadius(): number {\n return translateDistance(this.paint.get('fill-translate'));\n }\n\n queryIntersectsFeature(queryGeometry: Array,\n feature: VectorTileFeature,\n featureState: FeatureState,\n geometry: Array>,\n zoom: number,\n transform: Transform,\n pixelsToTileUnits: number): boolean {\n const translatedPolygon = translate(queryGeometry,\n this.paint.get('fill-translate'),\n this.paint.get('fill-translate-anchor'),\n transform.angle, pixelsToTileUnits);\n return polygonIntersectsMultiPolygon(translatedPolygon, geometry);\n }\n\n isTileClipped() {\n return true;\n }\n}\n\nexport default FillStyleLayer;\n", "// @flow\nimport {createLayout} from '../../util/struct_array';\n\nconst layout = createLayout([\n {name: 'a_pos', components: 2, type: 'Int16'},\n {name: 'a_normal_ed', components: 4, type: 'Int16'},\n], 4);\n\nexport default layout;\nexport const {members, size, alignment} = layout;\n", "'use strict';\n\nvar Point = require('@mapbox/point-geometry');\n\nmodule.exports = VectorTileFeature;\n\nfunction VectorTileFeature(pbf, end, extent, keys, values) {\n // Public\n this.properties = {};\n this.extent = extent;\n this.type = 0;\n\n // Private\n this._pbf = pbf;\n this._geometry = -1;\n this._keys = keys;\n this._values = values;\n\n pbf.readFields(readFeature, this, end);\n}\n\nfunction readFeature(tag, feature, pbf) {\n if (tag == 1) feature.id = pbf.readVarint();\n else if (tag == 2) readTag(pbf, feature);\n else if (tag == 3) feature.type = pbf.readVarint();\n else if (tag == 4) feature._geometry = pbf.pos;\n}\n\nfunction readTag(pbf, feature) {\n var end = pbf.readVarint() + pbf.pos;\n\n while (pbf.pos < end) {\n var key = feature._keys[pbf.readVarint()],\n value = feature._values[pbf.readVarint()];\n feature.properties[key] = value;\n }\n}\n\nVectorTileFeature.types = ['Unknown', 'Point', 'LineString', 'Polygon'];\n\nVectorTileFeature.prototype.loadGeometry = function() {\n var pbf = this._pbf;\n pbf.pos = this._geometry;\n\n var end = pbf.readVarint() + pbf.pos,\n cmd = 1,\n length = 0,\n x = 0,\n y = 0,\n lines = [],\n line;\n\n while (pbf.pos < end) {\n if (length <= 0) {\n var cmdLen = pbf.readVarint();\n cmd = cmdLen & 0x7;\n length = cmdLen >> 3;\n }\n\n length--;\n\n if (cmd === 1 || cmd === 2) {\n x += pbf.readSVarint();\n y += pbf.readSVarint();\n\n if (cmd === 1) { // moveTo\n if (line) lines.push(line);\n line = [];\n }\n\n line.push(new Point(x, y));\n\n } else if (cmd === 7) {\n\n // Workaround for https://github.com/mapbox/mapnik-vector-tile/issues/90\n if (line) {\n line.push(line[0].clone()); // closePolygon\n }\n\n } else {\n throw new Error('unknown command ' + cmd);\n }\n }\n\n if (line) lines.push(line);\n\n return lines;\n};\n\nVectorTileFeature.prototype.bbox = function() {\n var pbf = this._pbf;\n pbf.pos = this._geometry;\n\n var end = pbf.readVarint() + pbf.pos,\n cmd = 1,\n length = 0,\n x = 0,\n y = 0,\n x1 = Infinity,\n x2 = -Infinity,\n y1 = Infinity,\n y2 = -Infinity;\n\n while (pbf.pos < end) {\n if (length <= 0) {\n var cmdLen = pbf.readVarint();\n cmd = cmdLen & 0x7;\n length = cmdLen >> 3;\n }\n\n length--;\n\n if (cmd === 1 || cmd === 2) {\n x += pbf.readSVarint();\n y += pbf.readSVarint();\n if (x < x1) x1 = x;\n if (x > x2) x2 = x;\n if (y < y1) y1 = y;\n if (y > y2) y2 = y;\n\n } else if (cmd !== 7) {\n throw new Error('unknown command ' + cmd);\n }\n }\n\n return [x1, y1, x2, y2];\n};\n\nVectorTileFeature.prototype.toGeoJSON = function(x, y, z) {\n var size = this.extent * Math.pow(2, z),\n x0 = this.extent * x,\n y0 = this.extent * y,\n coords = this.loadGeometry(),\n type = VectorTileFeature.types[this.type],\n i, j;\n\n function project(line) {\n for (var j = 0; j < line.length; j++) {\n var p = line[j], y2 = 180 - (p.y + y0) * 360 / size;\n line[j] = [\n (p.x + x0) * 360 / size - 180,\n 360 / Math.PI * Math.atan(Math.exp(y2 * Math.PI / 180)) - 90\n ];\n }\n }\n\n switch (this.type) {\n case 1:\n var points = [];\n for (i = 0; i < coords.length; i++) {\n points[i] = coords[i][0];\n }\n coords = points;\n project(coords);\n break;\n\n case 2:\n for (i = 0; i < coords.length; i++) {\n project(coords[i]);\n }\n break;\n\n case 3:\n coords = classifyRings(coords);\n for (i = 0; i < coords.length; i++) {\n for (j = 0; j < coords[i].length; j++) {\n project(coords[i][j]);\n }\n }\n break;\n }\n\n if (coords.length === 1) {\n coords = coords[0];\n } else {\n type = 'Multi' + type;\n }\n\n var result = {\n type: \"Feature\",\n geometry: {\n type: type,\n coordinates: coords\n },\n properties: this.properties\n };\n\n if ('id' in this) {\n result.id = this.id;\n }\n\n return result;\n};\n\n// classifies an array of rings into polygons with outer rings and holes\n\nfunction classifyRings(rings) {\n var len = rings.length;\n\n if (len <= 1) return [rings];\n\n var polygons = [],\n polygon,\n ccw;\n\n for (var i = 0; i < len; i++) {\n var area = signedArea(rings[i]);\n if (area === 0) continue;\n\n if (ccw === undefined) ccw = area < 0;\n\n if (ccw === area < 0) {\n if (polygon) polygons.push(polygon);\n polygon = [rings[i]];\n\n } else {\n polygon.push(rings[i]);\n }\n }\n if (polygon) polygons.push(polygon);\n\n return polygons;\n}\n\nfunction signedArea(ring) {\n var sum = 0;\n for (var i = 0, len = ring.length, j = len - 1, p1, p2; i < len; j = i++) {\n p1 = ring[i];\n p2 = ring[j];\n sum += (p2.x - p1.x) * (p1.y + p2.y);\n }\n return sum;\n}\n", "'use strict';\n\nvar VectorTileFeature = require('./vectortilefeature.js');\n\nmodule.exports = VectorTileLayer;\n\nfunction VectorTileLayer(pbf, end) {\n // Public\n this.version = 1;\n this.name = null;\n this.extent = 4096;\n this.length = 0;\n\n // Private\n this._pbf = pbf;\n this._keys = [];\n this._values = [];\n this._features = [];\n\n pbf.readFields(readLayer, this, end);\n\n this.length = this._features.length;\n}\n\nfunction readLayer(tag, layer, pbf) {\n if (tag === 15) layer.version = pbf.readVarint();\n else if (tag === 1) layer.name = pbf.readString();\n else if (tag === 5) layer.extent = pbf.readVarint();\n else if (tag === 2) layer._features.push(pbf.pos);\n else if (tag === 3) layer._keys.push(pbf.readString());\n else if (tag === 4) layer._values.push(readValueMessage(pbf));\n}\n\nfunction readValueMessage(pbf) {\n var value = null,\n end = pbf.readVarint() + pbf.pos;\n\n while (pbf.pos < end) {\n var tag = pbf.readVarint() >> 3;\n\n value = tag === 1 ? pbf.readString() :\n tag === 2 ? pbf.readFloat() :\n tag === 3 ? pbf.readDouble() :\n tag === 4 ? pbf.readVarint64() :\n tag === 5 ? pbf.readVarint() :\n tag === 6 ? pbf.readSVarint() :\n tag === 7 ? pbf.readBoolean() : null;\n }\n\n return value;\n}\n\n// return feature `i` from this layer as a `VectorTileFeature`\nVectorTileLayer.prototype.feature = function(i) {\n if (i < 0 || i >= this._features.length) throw new Error('feature index out of bounds');\n\n this._pbf.pos = this._features[i];\n\n var end = this._pbf.readVarint() + this._pbf.pos;\n return new VectorTileFeature(this._pbf, end, this.extent, this._keys, this._values);\n};\n", "'use strict';\n\nvar VectorTileLayer = require('./vectortilelayer');\n\nmodule.exports = VectorTile;\n\nfunction VectorTile(pbf, end) {\n this.layers = pbf.readFields(readTile, {}, end);\n}\n\nfunction readTile(tag, layers, pbf) {\n if (tag === 3) {\n var layer = new VectorTileLayer(pbf, pbf.readVarint() + pbf.pos);\n if (layer.length) layers[layer.name] = layer;\n }\n}\n\n", "module.exports.VectorTile = require('./lib/vectortile.js');\nmodule.exports.VectorTileFeature = require('./lib/vectortilefeature.js');\nmodule.exports.VectorTileLayer = require('./lib/vectortilelayer.js');\n", "// @flow\n\nimport {FillExtrusionLayoutArray} from '../array_types';\n\nimport {members as layoutAttributes} from './fill_extrusion_attributes';\nimport SegmentVector from '../segment';\nimport {ProgramConfigurationSet} from '../program_configuration';\nimport {TriangleIndexArray} from '../index_array_type';\nimport EXTENT from '../extent';\nimport earcut from 'earcut';\nimport mvt from '@mapbox/vector-tile';\nconst vectorTileFeatureTypes = mvt.VectorTileFeature.types;\nimport classifyRings from '../../util/classify_rings';\nimport assert from 'assert';\nconst EARCUT_MAX_RINGS = 500;\nimport {register} from '../../util/web_worker_transfer';\nimport {hasPattern, addPatternDependencies} from './pattern_bucket_features';\nimport loadGeometry from '../load_geometry';\nimport toEvaluationFeature from '../evaluation_feature';\nimport EvaluationParameters from '../../style/evaluation_parameters';\n\nimport type {CanonicalTileID} from '../../source/tile_id';\nimport type {\n Bucket,\n BucketParameters,\n BucketFeature,\n IndexedFeature,\n PopulateParameters\n} from '../bucket';\n\nimport type FillExtrusionStyleLayer from '../../style/style_layer/fill_extrusion_style_layer';\nimport type Context from '../../gl/context';\nimport type IndexBuffer from '../../gl/index_buffer';\nimport type VertexBuffer from '../../gl/vertex_buffer';\nimport type Point from '@mapbox/point-geometry';\nimport type {FeatureStates} from '../../source/source_state';\nimport type {ImagePosition} from '../../render/image_atlas';\n\nconst FACTOR = Math.pow(2, 13);\n\nfunction addVertex(vertexArray, x, y, nx, ny, nz, t, e) {\n vertexArray.emplaceBack(\n // a_pos\n x,\n y,\n // a_normal_ed: 3-component normal and 1-component edgedistance\n Math.floor(nx * FACTOR) * 2 + t,\n ny * FACTOR * 2,\n nz * FACTOR * 2,\n // edgedistance (used for wrapping patterns around extrusion sides)\n Math.round(e)\n );\n}\n\nclass FillExtrusionBucket implements Bucket {\n index: number;\n zoom: number;\n overscaling: number;\n layers: Array;\n layerIds: Array;\n stateDependentLayers: Array;\n stateDependentLayerIds: Array;\n\n layoutVertexArray: FillExtrusionLayoutArray;\n layoutVertexBuffer: VertexBuffer;\n\n indexArray: TriangleIndexArray;\n indexBuffer: IndexBuffer;\n\n hasPattern: boolean;\n programConfigurations: ProgramConfigurationSet;\n segments: SegmentVector;\n uploaded: boolean;\n features: Array;\n\n constructor(options: BucketParameters) {\n this.zoom = options.zoom;\n this.overscaling = options.overscaling;\n this.layers = options.layers;\n this.layerIds = this.layers.map(layer => layer.id);\n this.index = options.index;\n this.hasPattern = false;\n\n this.layoutVertexArray = new FillExtrusionLayoutArray();\n this.indexArray = new TriangleIndexArray();\n this.programConfigurations = new ProgramConfigurationSet(options.layers, options.zoom);\n this.segments = new SegmentVector();\n this.stateDependentLayerIds = this.layers.filter((l) => l.isStateDependent()).map((l) => l.id);\n\n }\n\n populate(features: Array, options: PopulateParameters, canonical: CanonicalTileID) {\n this.features = [];\n this.hasPattern = hasPattern('fill-extrusion', this.layers, options);\n\n for (const {feature, id, index, sourceLayerIndex} of features) {\n const needGeometry = this.layers[0]._featureFilter.needGeometry;\n const evaluationFeature = toEvaluationFeature(feature, needGeometry);\n\n if (!this.layers[0]._featureFilter.filter(new EvaluationParameters(this.zoom), evaluationFeature, canonical)) continue;\n\n const bucketFeature: BucketFeature = {\n id,\n sourceLayerIndex,\n index,\n geometry: needGeometry ? evaluationFeature.geometry : loadGeometry(feature),\n properties: feature.properties,\n type: feature.type,\n patterns: {}\n };\n\n if (this.hasPattern) {\n this.features.push(addPatternDependencies('fill-extrusion', this.layers, bucketFeature, this.zoom, options));\n } else {\n this.addFeature(bucketFeature, bucketFeature.geometry, index, canonical, {});\n }\n\n options.featureIndex.insert(feature, bucketFeature.geometry, index, sourceLayerIndex, this.index, true);\n }\n }\n\n addFeatures(options: PopulateParameters, canonical: CanonicalTileID, imagePositions: {[_: string]: ImagePosition}) {\n for (const feature of this.features) {\n const {geometry} = feature;\n this.addFeature(feature, geometry, feature.index, canonical, imagePositions);\n }\n }\n\n update(states: FeatureStates, vtLayer: VectorTileLayer, imagePositions: {[_: string]: ImagePosition}) {\n if (!this.stateDependentLayers.length) return;\n this.programConfigurations.updatePaintArrays(states, vtLayer, this.stateDependentLayers, imagePositions);\n }\n\n isEmpty() {\n return this.layoutVertexArray.length === 0;\n }\n\n uploadPending() {\n return !this.uploaded || this.programConfigurations.needsUpload;\n }\n\n upload(context: Context) {\n if (!this.uploaded) {\n this.layoutVertexBuffer = context.createVertexBuffer(this.layoutVertexArray, layoutAttributes);\n this.indexBuffer = context.createIndexBuffer(this.indexArray);\n }\n this.programConfigurations.upload(context);\n this.uploaded = true;\n }\n\n destroy() {\n if (!this.layoutVertexBuffer) return;\n this.layoutVertexBuffer.destroy();\n this.indexBuffer.destroy();\n this.programConfigurations.destroy();\n this.segments.destroy();\n }\n\n addFeature(feature: BucketFeature, geometry: Array>, index: number, canonical: CanonicalTileID, imagePositions: {[_: string]: ImagePosition}) {\n for (const polygon of classifyRings(geometry, EARCUT_MAX_RINGS)) {\n let numVertices = 0;\n for (const ring of polygon) {\n numVertices += ring.length;\n }\n let segment = this.segments.prepareSegment(4, this.layoutVertexArray, this.indexArray);\n\n for (const ring of polygon) {\n if (ring.length === 0) {\n continue;\n }\n\n if (isEntirelyOutside(ring)) {\n continue;\n }\n\n let edgeDistance = 0;\n\n for (let p = 0; p < ring.length; p++) {\n const p1 = ring[p];\n\n if (p >= 1) {\n const p2 = ring[p - 1];\n\n if (!isBoundaryEdge(p1, p2)) {\n if (segment.vertexLength + 4 > SegmentVector.MAX_VERTEX_ARRAY_LENGTH) {\n segment = this.segments.prepareSegment(4, this.layoutVertexArray, this.indexArray);\n }\n\n const perp = p1.sub(p2)._perp()._unit();\n const dist = p2.dist(p1);\n if (edgeDistance + dist > 32768) edgeDistance = 0;\n\n addVertex(this.layoutVertexArray, p1.x, p1.y, perp.x, perp.y, 0, 0, edgeDistance);\n addVertex(this.layoutVertexArray, p1.x, p1.y, perp.x, perp.y, 0, 1, edgeDistance);\n\n edgeDistance += dist;\n\n addVertex(this.layoutVertexArray, p2.x, p2.y, perp.x, perp.y, 0, 0, edgeDistance);\n addVertex(this.layoutVertexArray, p2.x, p2.y, perp.x, perp.y, 0, 1, edgeDistance);\n\n const bottomRight = segment.vertexLength;\n\n // ┌──────┐\n // │ 0 1 │ Counter-clockwise winding order.\n // │ │ Triangle 1: 0 => 2 => 1\n // │ 2 3 │ Triangle 2: 1 => 2 => 3\n // └──────┘\n this.indexArray.emplaceBack(bottomRight, bottomRight + 2, bottomRight + 1);\n this.indexArray.emplaceBack(bottomRight + 1, bottomRight + 2, bottomRight + 3);\n\n segment.vertexLength += 4;\n segment.primitiveLength += 2;\n }\n }\n }\n }\n\n if (segment.vertexLength + numVertices > SegmentVector.MAX_VERTEX_ARRAY_LENGTH) {\n segment = this.segments.prepareSegment(numVertices, this.layoutVertexArray, this.indexArray);\n }\n\n //Only triangulate and draw the area of the feature if it is a polygon\n //Other feature types (e.g. LineString) do not have area, so triangulation is pointless / undefined\n if (vectorTileFeatureTypes[feature.type] !== 'Polygon')\n continue;\n\n const flattened = [];\n const holeIndices = [];\n const triangleIndex = segment.vertexLength;\n\n for (const ring of polygon) {\n if (ring.length === 0) {\n continue;\n }\n\n if (ring !== polygon[0]) {\n holeIndices.push(flattened.length / 2);\n }\n\n for (let i = 0; i < ring.length; i++) {\n const p = ring[i];\n\n addVertex(this.layoutVertexArray, p.x, p.y, 0, 0, 1, 1, 0);\n\n flattened.push(p.x);\n flattened.push(p.y);\n }\n }\n\n const indices = earcut(flattened, holeIndices);\n assert(indices.length % 3 === 0);\n\n for (let j = 0; j < indices.length; j += 3) {\n // Counter-clockwise winding order.\n this.indexArray.emplaceBack(\n triangleIndex + indices[j],\n triangleIndex + indices[j + 2],\n triangleIndex + indices[j + 1]);\n }\n\n segment.primitiveLength += indices.length / 3;\n segment.vertexLength += numVertices;\n }\n\n this.programConfigurations.populatePaintArrays(this.layoutVertexArray.length, feature, index, imagePositions, canonical);\n }\n}\n\nregister('FillExtrusionBucket', FillExtrusionBucket, {omit: ['layers', 'features']});\n\nexport default FillExtrusionBucket;\n\nfunction isBoundaryEdge(p1, p2) {\n return (p1.x === p2.x && (p1.x < 0 || p1.x > EXTENT)) ||\n (p1.y === p2.y && (p1.y < 0 || p1.y > EXTENT));\n}\n\nfunction isEntirelyOutside(ring) {\n return ring.every(p => p.x < 0) ||\n ring.every(p => p.x > EXTENT) ||\n ring.every(p => p.y < 0) ||\n ring.every(p => p.y > EXTENT);\n}\n", "// This file is generated. Edit build/generate-style-code.js, then run `yarn run codegen`.\n// @flow\n/* eslint-disable */\n\nimport styleSpec from '../../style-spec/reference/latest';\n\nimport {\n Properties,\n DataConstantProperty,\n DataDrivenProperty,\n CrossFadedDataDrivenProperty,\n CrossFadedProperty,\n ColorRampProperty\n} from '../properties';\n\nimport type Color from '../../style-spec/util/color';\n\nimport type Formatted from '../../style-spec/expression/types/formatted';\n\nimport type ResolvedImage from '../../style-spec/expression/types/resolved_image';\n\n\nexport type PaintProps = {|\n \"fill-extrusion-opacity\": DataConstantProperty,\n \"fill-extrusion-color\": DataDrivenProperty,\n \"fill-extrusion-translate\": DataConstantProperty<[number, number]>,\n \"fill-extrusion-translate-anchor\": DataConstantProperty<\"map\" | \"viewport\">,\n \"fill-extrusion-pattern\": CrossFadedDataDrivenProperty,\n \"fill-extrusion-height\": DataDrivenProperty,\n \"fill-extrusion-base\": DataDrivenProperty,\n \"fill-extrusion-vertical-gradient\": DataConstantProperty,\n|};\n\nconst paint: Properties = new Properties({\n \"fill-extrusion-opacity\": new DataConstantProperty(styleSpec[\"paint_fill-extrusion\"][\"fill-extrusion-opacity\"]),\n \"fill-extrusion-color\": new DataDrivenProperty(styleSpec[\"paint_fill-extrusion\"][\"fill-extrusion-color\"]),\n \"fill-extrusion-translate\": new DataConstantProperty(styleSpec[\"paint_fill-extrusion\"][\"fill-extrusion-translate\"]),\n \"fill-extrusion-translate-anchor\": new DataConstantProperty(styleSpec[\"paint_fill-extrusion\"][\"fill-extrusion-translate-anchor\"]),\n \"fill-extrusion-pattern\": new CrossFadedDataDrivenProperty(styleSpec[\"paint_fill-extrusion\"][\"fill-extrusion-pattern\"]),\n \"fill-extrusion-height\": new DataDrivenProperty(styleSpec[\"paint_fill-extrusion\"][\"fill-extrusion-height\"]),\n \"fill-extrusion-base\": new DataDrivenProperty(styleSpec[\"paint_fill-extrusion\"][\"fill-extrusion-base\"]),\n \"fill-extrusion-vertical-gradient\": new DataConstantProperty(styleSpec[\"paint_fill-extrusion\"][\"fill-extrusion-vertical-gradient\"]),\n});\n\n// Note: without adding the explicit type annotation, Flow infers weaker types\n// for these objects from their use in the constructor to StyleLayer, as\n// {layout?: Properties<...>, paint: Properties<...>}\nexport default ({ paint }: $Exact<{\n paint: Properties\n}>);\n", "// @flow\n\nimport StyleLayer from '../style_layer';\n\nimport FillExtrusionBucket from '../../data/bucket/fill_extrusion_bucket';\nimport {polygonIntersectsPolygon, polygonIntersectsMultiPolygon} from '../../util/intersection_tests';\nimport {translateDistance, translate} from '../query_utils';\nimport properties from './fill_extrusion_style_layer_properties';\nimport {Transitionable, Transitioning, PossiblyEvaluated} from '../properties';\nimport {vec4} from 'gl-matrix';\nimport Point from '@mapbox/point-geometry';\n\nimport type {FeatureState} from '../../style-spec/expression';\nimport type {BucketParameters} from '../../data/bucket';\nimport type {PaintProps} from './fill_extrusion_style_layer_properties';\nimport type Transform from '../../geo/transform';\nimport type {LayerSpecification} from '../../style-spec/types';\n\nclass FillExtrusionStyleLayer extends StyleLayer {\n _transitionablePaint: Transitionable;\n _transitioningPaint: Transitioning;\n paint: PossiblyEvaluated;\n\n constructor(layer: LayerSpecification) {\n super(layer, properties);\n }\n\n createBucket(parameters: BucketParameters) {\n return new FillExtrusionBucket(parameters);\n }\n\n queryRadius(): number {\n return translateDistance(this.paint.get('fill-extrusion-translate'));\n }\n\n is3D(): boolean {\n return true;\n }\n\n queryIntersectsFeature(queryGeometry: Array,\n feature: VectorTileFeature,\n featureState: FeatureState,\n geometry: Array>,\n zoom: number,\n transform: Transform,\n pixelsToTileUnits: number,\n pixelPosMatrix: Float32Array): boolean | number {\n\n const translatedPolygon = translate(queryGeometry,\n this.paint.get('fill-extrusion-translate'),\n this.paint.get('fill-extrusion-translate-anchor'),\n transform.angle, pixelsToTileUnits);\n\n const height = this.paint.get('fill-extrusion-height').evaluate(feature, featureState);\n const base = this.paint.get('fill-extrusion-base').evaluate(feature, featureState);\n\n const projectedQueryGeometry = projectQueryGeometry(translatedPolygon, pixelPosMatrix, transform, 0);\n\n const projected = projectExtrusion(geometry, base, height, pixelPosMatrix);\n const projectedBase = projected[0];\n const projectedTop = projected[1];\n return checkIntersection(projectedBase, projectedTop, projectedQueryGeometry);\n }\n}\n\nfunction dot(a, b) {\n return a.x * b.x + a.y * b.y;\n}\n\nexport function getIntersectionDistance(projectedQueryGeometry: Array, projectedFace: Array) {\n\n if (projectedQueryGeometry.length === 1) {\n // For point queries calculate the z at which the point intersects the face\n // using barycentric coordinates.\n\n // Find the barycentric coordinates of the projected point within the first\n // triangle of the face, using only the xy plane. It doesn't matter if the\n // point is outside the first triangle because all the triangles in the face\n // are in the same plane.\n //\n // Check whether points are coincident and use other points if they are.\n let i = 0;\n const a = projectedFace[i++];\n let b;\n while (!b || a.equals(b)) {\n b = projectedFace[i++];\n if (!b) return Infinity;\n }\n\n // Loop until point `c` is not colinear with points `a` and `b`.\n for (; i < projectedFace.length; i++) {\n const c = projectedFace[i];\n\n const p = projectedQueryGeometry[0];\n\n const ab = b.sub(a);\n const ac = c.sub(a);\n const ap = p.sub(a);\n\n const dotABAB = dot(ab, ab);\n const dotABAC = dot(ab, ac);\n const dotACAC = dot(ac, ac);\n const dotAPAB = dot(ap, ab);\n const dotAPAC = dot(ap, ac);\n const denom = dotABAB * dotACAC - dotABAC * dotABAC;\n\n const v = (dotACAC * dotAPAB - dotABAC * dotAPAC) / denom;\n const w = (dotABAB * dotAPAC - dotABAC * dotAPAB) / denom;\n const u = 1 - v - w;\n\n // Use the barycentric weighting along with the original triangle z coordinates to get the point of intersection.\n const distance = a.z * u + b.z * v + c.z * w;\n\n if (isFinite(distance)) return distance;\n }\n\n return Infinity;\n\n } else {\n // The counts as closest is less clear when the query is a box. This\n // returns the distance to the nearest point on the face, whether it is\n // within the query or not. It could be more correct to return the\n // distance to the closest point within the query box but this would be\n // more complicated and expensive to calculate with little benefit.\n let closestDistance = Infinity;\n for (const p of projectedFace) {\n closestDistance = Math.min(closestDistance, p.z);\n }\n return closestDistance;\n }\n}\n\nfunction checkIntersection(projectedBase: Array, projectedTop: Array, projectedQueryGeometry: Array) {\n let closestDistance = Infinity;\n\n if (polygonIntersectsMultiPolygon(projectedQueryGeometry, projectedTop)) {\n closestDistance = getIntersectionDistance(projectedQueryGeometry, projectedTop[0]);\n }\n\n for (let r = 0; r < projectedTop.length; r++) {\n const ringTop = projectedTop[r];\n const ringBase = projectedBase[r];\n for (let p = 0; p < ringTop.length - 1; p++) {\n const topA = ringTop[p];\n const topB = ringTop[p + 1];\n const baseA = ringBase[p];\n const baseB = ringBase[p + 1];\n const face = [topA, topB, baseB, baseA, topA];\n if (polygonIntersectsPolygon(projectedQueryGeometry, face)) {\n closestDistance = Math.min(closestDistance, getIntersectionDistance(projectedQueryGeometry, face));\n }\n }\n }\n\n return closestDistance === Infinity ? false : closestDistance;\n}\n\n/*\n * Project the geometry using matrix `m`. This is essentially doing\n * `vec4.transformMat4([], [p.x, p.y, z, 1], m)` but the multiplication\n * is inlined so that parts of the projection that are the same across\n * different points can only be done once. This produced a measurable\n * performance improvement.\n */\nfunction projectExtrusion(geometry: Array>, zBase: number, zTop: number, m: Float32Array) {\n const projectedBase = [];\n const projectedTop = [];\n\n const baseXZ = m[8] * zBase;\n const baseYZ = m[9] * zBase;\n const baseZZ = m[10] * zBase;\n const baseWZ = m[11] * zBase;\n const topXZ = m[8] * zTop;\n const topYZ = m[9] * zTop;\n const topZZ = m[10] * zTop;\n const topWZ = m[11] * zTop;\n\n for (const r of geometry) {\n const ringBase = [];\n const ringTop = [];\n for (const p of r) {\n const x = p.x;\n const y = p.y;\n\n const sX = m[0] * x + m[4] * y + m[12];\n const sY = m[1] * x + m[5] * y + m[13];\n const sZ = m[2] * x + m[6] * y + m[14];\n const sW = m[3] * x + m[7] * y + m[15];\n\n const baseX = sX + baseXZ;\n const baseY = sY + baseYZ;\n const baseZ = sZ + baseZZ;\n const baseW = sW + baseWZ;\n\n const topX = sX + topXZ;\n const topY = sY + topYZ;\n const topZ = sZ + topZZ;\n const topW = sW + topWZ;\n\n const b = new Point(baseX / baseW, baseY / baseW);\n b.z = baseZ / baseW;\n ringBase.push(b);\n\n const t = new Point(topX / topW, topY / topW);\n t.z = topZ / topW;\n ringTop.push(t);\n }\n projectedBase.push(ringBase);\n projectedTop.push(ringTop);\n }\n return [projectedBase, projectedTop];\n}\n\nfunction projectQueryGeometry(queryGeometry: Array, pixelPosMatrix: Float32Array, transform: Transform, z: number) {\n const projectedQueryGeometry = [];\n for (const p of queryGeometry) {\n const v = [p.x, p.y, z, 1];\n vec4.transformMat4(v, v, pixelPosMatrix);\n projectedQueryGeometry.push(new Point(v[0] / v[3], v[1] / v[3]));\n }\n return projectedQueryGeometry;\n}\n\nexport default FillExtrusionStyleLayer;\n", "// @flow\nimport {createLayout} from '../../util/struct_array';\n\nconst lineLayoutAttributes = createLayout([\n {name: 'a_pos_normal', components: 2, type: 'Int16'},\n {name: 'a_data', components: 4, type: 'Uint8'}\n], 4);\n\nexport default lineLayoutAttributes;\nexport const {members, size, alignment} = lineLayoutAttributes;\n", "// @flow\nimport {createLayout} from '../../util/struct_array';\n\nconst lineLayoutAttributesExt = createLayout([\n {name: 'a_uv_x', components: 1, type: 'Float32'},\n {name: 'a_split_index', components: 1, type: 'Float32'},\n]);\n\nexport default lineLayoutAttributesExt;\nexport const {members, size, alignment} = lineLayoutAttributesExt;\n", "// @flow\n\nimport {LineLayoutArray, LineExtLayoutArray} from '../array_types';\n\nimport {members as layoutAttributes} from './line_attributes';\nimport {members as layoutAttributesExt} from './line_attributes_ext';\nimport SegmentVector from '../segment';\nimport {ProgramConfigurationSet} from '../program_configuration';\nimport {TriangleIndexArray} from '../index_array_type';\nimport EXTENT from '../extent';\nimport mvt from '@mapbox/vector-tile';\nconst vectorTileFeatureTypes = mvt.VectorTileFeature.types;\nimport {register} from '../../util/web_worker_transfer';\nimport {hasPattern, addPatternDependencies} from './pattern_bucket_features';\nimport loadGeometry from '../load_geometry';\nimport toEvaluationFeature from '../evaluation_feature';\nimport EvaluationParameters from '../../style/evaluation_parameters';\n\nimport type {CanonicalTileID} from '../../source/tile_id';\nimport type {\n Bucket,\n BucketParameters,\n BucketFeature,\n IndexedFeature,\n PopulateParameters\n} from '../bucket';\nimport type LineStyleLayer from '../../style/style_layer/line_style_layer';\nimport type Point from '@mapbox/point-geometry';\nimport type {Segment} from '../segment';\nimport {RGBAImage} from '../../util/image';\nimport type Context from '../../gl/context';\nimport type Texture from '../../render/texture';\nimport type IndexBuffer from '../../gl/index_buffer';\nimport type VertexBuffer from '../../gl/vertex_buffer';\nimport type {FeatureStates} from '../../source/source_state';\nimport type {ImagePosition} from '../../render/image_atlas';\n\n// NOTE ON EXTRUDE SCALE:\n// scale the extrusion vector so that the normal length is this value.\n// contains the \"texture\" normals (-1..1). this is distinct from the extrude\n// normals for line joins, because the x-value remains 0 for the texture\n// normal array, while the extrude normal actually moves the vertex to create\n// the acute/bevelled line join.\nconst EXTRUDE_SCALE = 63;\n\n/*\n * Sharp corners cause dashed lines to tilt because the distance along the line\n * is the same at both the inner and outer corners. To improve the appearance of\n * dashed lines we add extra points near sharp corners so that a smaller part\n * of the line is tilted.\n *\n * COS_HALF_SHARP_CORNER controls how sharp a corner has to be for us to add an\n * extra vertex. The default is 75 degrees.\n *\n * The newly created vertices are placed SHARP_CORNER_OFFSET pixels from the corner.\n */\nconst COS_HALF_SHARP_CORNER = Math.cos(75 / 2 * (Math.PI / 180));\nconst SHARP_CORNER_OFFSET = 15;\n\n// Angle per triangle for approximating round line joins.\nconst DEG_PER_TRIANGLE = 20;\n\n// The number of bits that is used to store the line distance in the buffer.\nconst LINE_DISTANCE_BUFFER_BITS = 15;\n\n// We don't have enough bits for the line distance as we'd like to have, so\n// use this value to scale the line distance (in tile units) down to a smaller\n// value. This lets us store longer distances while sacrificing precision.\nconst LINE_DISTANCE_SCALE = 1 / 2;\n\n// The maximum line distance, in tile units, that fits in the buffer.\nconst MAX_LINE_DISTANCE = Math.pow(2, LINE_DISTANCE_BUFFER_BITS - 1) / LINE_DISTANCE_SCALE;\n\ntype LineClips = {\n start: number;\n end: number;\n}\n\ntype GradientTexture = {\n texture: Texture;\n gradient: ?RGBAImage;\n version: number;\n}\n\n/**\n * @private\n */\nclass LineBucket implements Bucket {\n distance: number;\n totalDistance: number;\n maxLineLength: number;\n scaledDistance: number;\n lineClips: ?LineClips;\n\n e1: number;\n e2: number;\n\n index: number;\n zoom: number;\n overscaling: number;\n layers: Array;\n layerIds: Array;\n gradients: {[string]: GradientTexture};\n stateDependentLayers: Array;\n stateDependentLayerIds: Array;\n patternFeatures: Array;\n lineClipsArray: Array;\n\n layoutVertexArray: LineLayoutArray;\n layoutVertexBuffer: VertexBuffer;\n layoutVertexArray2: LineExtLayoutArray;\n layoutVertexBuffer2: VertexBuffer;\n\n indexArray: TriangleIndexArray;\n indexBuffer: IndexBuffer;\n\n hasPattern: boolean;\n programConfigurations: ProgramConfigurationSet;\n segments: SegmentVector;\n uploaded: boolean;\n\n constructor(options: BucketParameters) {\n this.zoom = options.zoom;\n this.overscaling = options.overscaling;\n this.layers = options.layers;\n this.layerIds = this.layers.map(layer => layer.id);\n this.index = options.index;\n this.hasPattern = false;\n this.patternFeatures = [];\n this.lineClipsArray = [];\n this.gradients = {};\n this.layers.forEach(layer => {\n this.gradients[layer.id] = {};\n });\n\n this.layoutVertexArray = new LineLayoutArray();\n this.layoutVertexArray2 = new LineExtLayoutArray();\n this.indexArray = new TriangleIndexArray();\n this.programConfigurations = new ProgramConfigurationSet(options.layers, options.zoom);\n this.segments = new SegmentVector();\n this.maxLineLength = 0;\n\n this.stateDependentLayerIds = this.layers.filter((l) => l.isStateDependent()).map((l) => l.id);\n }\n\n populate(features: Array, options: PopulateParameters, canonical: CanonicalTileID) {\n this.hasPattern = hasPattern('line', this.layers, options);\n const lineSortKey = this.layers[0].layout.get('line-sort-key');\n const bucketFeatures = [];\n\n for (const {feature, id, index, sourceLayerIndex} of features) {\n const needGeometry = this.layers[0]._featureFilter.needGeometry;\n const evaluationFeature = toEvaluationFeature(feature, needGeometry);\n\n if (!this.layers[0]._featureFilter.filter(new EvaluationParameters(this.zoom), evaluationFeature, canonical)) continue;\n\n const sortKey = lineSortKey ?\n lineSortKey.evaluate(evaluationFeature, {}, canonical) :\n undefined;\n\n const bucketFeature: BucketFeature = {\n id,\n properties: feature.properties,\n type: feature.type,\n sourceLayerIndex,\n index,\n geometry: needGeometry ? evaluationFeature.geometry : loadGeometry(feature),\n patterns: {},\n sortKey\n };\n\n bucketFeatures.push(bucketFeature);\n }\n\n if (lineSortKey) {\n bucketFeatures.sort((a, b) => {\n // a.sortKey is always a number when in use\n return ((a.sortKey: any): number) - ((b.sortKey: any): number);\n });\n }\n\n for (const bucketFeature of bucketFeatures) {\n const {geometry, index, sourceLayerIndex} = bucketFeature;\n\n if (this.hasPattern) {\n const patternBucketFeature = addPatternDependencies('line', this.layers, bucketFeature, this.zoom, options);\n // pattern features are added only once the pattern is loaded into the image atlas\n // so are stored during populate until later updated with positions by tile worker in addFeatures\n this.patternFeatures.push(patternBucketFeature);\n } else {\n this.addFeature(bucketFeature, geometry, index, canonical, {});\n }\n\n const feature = features[index].feature;\n options.featureIndex.insert(feature, geometry, index, sourceLayerIndex, this.index);\n }\n }\n\n update(states: FeatureStates, vtLayer: VectorTileLayer, imagePositions: {[_: string]: ImagePosition}) {\n if (!this.stateDependentLayers.length) return;\n this.programConfigurations.updatePaintArrays(states, vtLayer, this.stateDependentLayers, imagePositions);\n }\n\n addFeatures(options: PopulateParameters, canonical: CanonicalTileID, imagePositions: {[_: string]: ImagePosition}) {\n for (const feature of this.patternFeatures) {\n this.addFeature(feature, feature.geometry, feature.index, canonical, imagePositions);\n }\n }\n\n isEmpty() {\n return this.layoutVertexArray.length === 0;\n }\n\n uploadPending() {\n return !this.uploaded || this.programConfigurations.needsUpload;\n }\n\n upload(context: Context) {\n if (!this.uploaded) {\n if (this.layoutVertexArray2.length !== 0) {\n this.layoutVertexBuffer2 = context.createVertexBuffer(this.layoutVertexArray2, layoutAttributesExt);\n }\n this.layoutVertexBuffer = context.createVertexBuffer(this.layoutVertexArray, layoutAttributes);\n this.indexBuffer = context.createIndexBuffer(this.indexArray);\n }\n this.programConfigurations.upload(context);\n this.uploaded = true;\n }\n\n destroy() {\n if (!this.layoutVertexBuffer) return;\n this.layoutVertexBuffer.destroy();\n this.indexBuffer.destroy();\n this.programConfigurations.destroy();\n this.segments.destroy();\n }\n\n lineFeatureClips(feature: BucketFeature): ?LineClips {\n if (!!feature.properties && feature.properties.hasOwnProperty('mapbox_clip_start') && feature.properties.hasOwnProperty('mapbox_clip_end')) {\n const start = +feature.properties['mapbox_clip_start'];\n const end = +feature.properties['mapbox_clip_end'];\n return {start, end};\n }\n }\n\n addFeature(feature: BucketFeature, geometry: Array>, index: number, canonical: CanonicalTileID, imagePositions: {[_: string]: ImagePosition}) {\n const layout = this.layers[0].layout;\n const join = layout.get('line-join').evaluate(feature, {});\n const cap = layout.get('line-cap');\n const miterLimit = layout.get('line-miter-limit');\n const roundLimit = layout.get('line-round-limit');\n this.lineClips = this.lineFeatureClips(feature);\n\n for (const line of geometry) {\n this.addLine(line, feature, join, cap, miterLimit, roundLimit);\n }\n\n this.programConfigurations.populatePaintArrays(this.layoutVertexArray.length, feature, index, imagePositions, canonical);\n }\n\n addLine(vertices: Array, feature: BucketFeature, join: string, cap: string, miterLimit: number, roundLimit: number) {\n this.distance = 0;\n this.scaledDistance = 0;\n this.totalDistance = 0;\n\n if (this.lineClips) {\n this.lineClipsArray.push(this.lineClips);\n // Calculate the total distance, in tile units, of this tiled line feature\n for (let i = 0; i < vertices.length - 1; i++) {\n this.totalDistance += vertices[i].dist(vertices[i + 1]);\n }\n this.updateScaledDistance();\n this.maxLineLength = Math.max(this.maxLineLength, this.totalDistance);\n }\n\n const isPolygon = vectorTileFeatureTypes[feature.type] === 'Polygon';\n\n // If the line has duplicate vertices at the ends, adjust start/length to remove them.\n let len = vertices.length;\n while (len >= 2 && vertices[len - 1].equals(vertices[len - 2])) {\n len--;\n }\n let first = 0;\n while (first < len - 1 && vertices[first].equals(vertices[first + 1])) {\n first++;\n }\n\n // Ignore invalid geometry.\n if (len < (isPolygon ? 3 : 2)) return;\n\n if (join === 'bevel') miterLimit = 1.05;\n\n const sharpCornerOffset = this.overscaling <= 16 ?\n SHARP_CORNER_OFFSET * EXTENT / (512 * this.overscaling) :\n 0;\n\n // we could be more precise, but it would only save a negligible amount of space\n const segment = this.segments.prepareSegment(len * 10, this.layoutVertexArray, this.indexArray);\n\n let currentVertex;\n let prevVertex = ((undefined: any): Point);\n let nextVertex = ((undefined: any): Point);\n let prevNormal = ((undefined: any): Point);\n let nextNormal = ((undefined: any): Point);\n\n // the last two vertices added\n this.e1 = this.e2 = -1;\n\n if (isPolygon) {\n currentVertex = vertices[len - 2];\n nextNormal = vertices[first].sub(currentVertex)._unit()._perp();\n }\n\n for (let i = first; i < len; i++) {\n\n nextVertex = i === len - 1 ?\n (isPolygon ? vertices[first + 1] : (undefined: any)) : // if it's a polygon, treat the last vertex like the first\n vertices[i + 1]; // just the next vertex\n\n // if two consecutive vertices exist, skip the current one\n if (nextVertex && vertices[i].equals(nextVertex)) continue;\n\n if (nextNormal) prevNormal = nextNormal;\n if (currentVertex) prevVertex = currentVertex;\n\n currentVertex = vertices[i];\n\n // Calculate the normal towards the next vertex in this line. In case\n // there is no next vertex, pretend that the line is continuing straight,\n // meaning that we are just using the previous normal.\n nextNormal = nextVertex ? nextVertex.sub(currentVertex)._unit()._perp() : prevNormal;\n\n // If we still don't have a previous normal, this is the beginning of a\n // non-closed line, so we're doing a straight \"join\".\n prevNormal = prevNormal || nextNormal;\n\n // Determine the normal of the join extrusion. It is the angle bisector\n // of the segments between the previous line and the next line.\n // In the case of 180° angles, the prev and next normals cancel each other out:\n // prevNormal + nextNormal = (0, 0), its magnitude is 0, so the unit vector would be\n // undefined. In that case, we're keeping the joinNormal at (0, 0), so that the cosHalfAngle\n // below will also become 0 and miterLength will become Infinity.\n let joinNormal = prevNormal.add(nextNormal);\n if (joinNormal.x !== 0 || joinNormal.y !== 0) {\n joinNormal._unit();\n }\n /* joinNormal prevNormal\n * ↖ ↑\n * .________. prevVertex\n * |\n * nextNormal ← | currentVertex\n * |\n * nextVertex !\n *\n */\n\n // calculate cosines of the angle (and its half) using dot product\n const cosAngle = prevNormal.x * nextNormal.x + prevNormal.y * nextNormal.y;\n const cosHalfAngle = joinNormal.x * nextNormal.x + joinNormal.y * nextNormal.y;\n\n // Calculate the length of the miter (the ratio of the miter to the width)\n // as the inverse of cosine of the angle between next and join normals\n const miterLength = cosHalfAngle !== 0 ? 1 / cosHalfAngle : Infinity;\n\n // approximate angle from cosine\n const approxAngle = 2 * Math.sqrt(2 - 2 * cosHalfAngle);\n\n const isSharpCorner = cosHalfAngle < COS_HALF_SHARP_CORNER && prevVertex && nextVertex;\n const lineTurnsLeft = prevNormal.x * nextNormal.y - prevNormal.y * nextNormal.x > 0;\n\n if (isSharpCorner && i > first) {\n const prevSegmentLength = currentVertex.dist(prevVertex);\n if (prevSegmentLength > 2 * sharpCornerOffset) {\n const newPrevVertex = currentVertex.sub(currentVertex.sub(prevVertex)._mult(sharpCornerOffset / prevSegmentLength)._round());\n this.updateDistance(prevVertex, newPrevVertex);\n this.addCurrentVertex(newPrevVertex, prevNormal, 0, 0, segment);\n prevVertex = newPrevVertex;\n }\n }\n\n // The join if a middle vertex, otherwise the cap.\n const middleVertex = prevVertex && nextVertex;\n let currentJoin = middleVertex ? join : isPolygon ? 'butt' : cap;\n\n if (middleVertex && currentJoin === 'round') {\n if (miterLength < roundLimit) {\n currentJoin = 'miter';\n } else if (miterLength <= 2) {\n currentJoin = 'fakeround';\n }\n }\n\n if (currentJoin === 'miter' && miterLength > miterLimit) {\n currentJoin = 'bevel';\n }\n\n if (currentJoin === 'bevel') {\n // The maximum extrude length is 128 / 63 = 2 times the width of the line\n // so if miterLength >= 2 we need to draw a different type of bevel here.\n if (miterLength > 2) currentJoin = 'flipbevel';\n\n // If the miterLength is really small and the line bevel wouldn't be visible,\n // just draw a miter join to save a triangle.\n if (miterLength < miterLimit) currentJoin = 'miter';\n }\n\n // Calculate how far along the line the currentVertex is\n if (prevVertex) this.updateDistance(prevVertex, currentVertex);\n\n if (currentJoin === 'miter') {\n\n joinNormal._mult(miterLength);\n this.addCurrentVertex(currentVertex, joinNormal, 0, 0, segment);\n\n } else if (currentJoin === 'flipbevel') {\n // miter is too big, flip the direction to make a beveled join\n\n if (miterLength > 100) {\n // Almost parallel lines\n joinNormal = nextNormal.mult(-1);\n\n } else {\n const bevelLength = miterLength * prevNormal.add(nextNormal).mag() / prevNormal.sub(nextNormal).mag();\n joinNormal._perp()._mult(bevelLength * (lineTurnsLeft ? -1 : 1));\n }\n this.addCurrentVertex(currentVertex, joinNormal, 0, 0, segment);\n this.addCurrentVertex(currentVertex, joinNormal.mult(-1), 0, 0, segment);\n\n } else if (currentJoin === 'bevel' || currentJoin === 'fakeround') {\n const offset = -Math.sqrt(miterLength * miterLength - 1);\n const offsetA = lineTurnsLeft ? offset : 0;\n const offsetB = lineTurnsLeft ? 0 : offset;\n\n // Close previous segment with a bevel\n if (prevVertex) {\n this.addCurrentVertex(currentVertex, prevNormal, offsetA, offsetB, segment);\n }\n\n if (currentJoin === 'fakeround') {\n // The join angle is sharp enough that a round join would be visible.\n // Bevel joins fill the gap between segments with a single pie slice triangle.\n // Create a round join by adding multiple pie slices. The join isn't actually round, but\n // it looks like it is at the sizes we render lines at.\n\n // pick the number of triangles for approximating round join by based on the angle between normals\n const n = Math.round((approxAngle * 180 / Math.PI) / DEG_PER_TRIANGLE);\n\n for (let m = 1; m < n; m++) {\n let t = m / n;\n if (t !== 0.5) {\n // approximate spherical interpolation https://observablehq.com/@mourner/approximating-geometric-slerp\n const t2 = t - 0.5;\n const A = 1.0904 + cosAngle * (-3.2452 + cosAngle * (3.55645 - cosAngle * 1.43519));\n const B = 0.848013 + cosAngle * (-1.06021 + cosAngle * 0.215638);\n t = t + t * t2 * (t - 1) * (A * t2 * t2 + B);\n }\n const extrude = nextNormal.sub(prevNormal)._mult(t)._add(prevNormal)._unit()._mult(lineTurnsLeft ? -1 : 1);\n this.addHalfVertex(currentVertex, extrude.x, extrude.y, false, lineTurnsLeft, 0, segment);\n }\n }\n\n if (nextVertex) {\n // Start next segment\n this.addCurrentVertex(currentVertex, nextNormal, -offsetA, -offsetB, segment);\n }\n\n } else if (currentJoin === 'butt') {\n this.addCurrentVertex(currentVertex, joinNormal, 0, 0, segment); // butt cap\n\n } else if (currentJoin === 'square') {\n const offset = prevVertex ? 1 : -1; // closing or starting square cap\n this.addCurrentVertex(currentVertex, joinNormal, offset, offset, segment);\n\n } else if (currentJoin === 'round') {\n\n if (prevVertex) {\n // Close previous segment with butt\n this.addCurrentVertex(currentVertex, prevNormal, 0, 0, segment);\n\n // Add round cap or linejoin at end of segment\n this.addCurrentVertex(currentVertex, prevNormal, 1, 1, segment, true);\n }\n if (nextVertex) {\n // Add round cap before first segment\n this.addCurrentVertex(currentVertex, nextNormal, -1, -1, segment, true);\n\n // Start next segment with a butt\n this.addCurrentVertex(currentVertex, nextNormal, 0, 0, segment);\n }\n }\n\n if (isSharpCorner && i < len - 1) {\n const nextSegmentLength = currentVertex.dist(nextVertex);\n if (nextSegmentLength > 2 * sharpCornerOffset) {\n const newCurrentVertex = currentVertex.add(nextVertex.sub(currentVertex)._mult(sharpCornerOffset / nextSegmentLength)._round());\n this.updateDistance(currentVertex, newCurrentVertex);\n this.addCurrentVertex(newCurrentVertex, nextNormal, 0, 0, segment);\n currentVertex = newCurrentVertex;\n }\n }\n }\n }\n\n /**\n * Add two vertices to the buffers.\n *\n * @param p the line vertex to add buffer vertices for\n * @param normal vertex normal\n * @param endLeft extrude to shift the left vertex along the line\n * @param endRight extrude to shift the left vertex along the line\n * @param segment the segment object to add the vertex to\n * @param round whether this is a round cap\n * @private\n */\n addCurrentVertex(p: Point, normal: Point, endLeft: number, endRight: number, segment: Segment, round: boolean = false) {\n // left and right extrude vectors, perpendicularly shifted by endLeft/endRight\n const leftX = normal.x + normal.y * endLeft;\n const leftY = normal.y - normal.x * endLeft;\n const rightX = -normal.x + normal.y * endRight;\n const rightY = -normal.y - normal.x * endRight;\n\n this.addHalfVertex(p, leftX, leftY, round, false, endLeft, segment);\n this.addHalfVertex(p, rightX, rightY, round, true, -endRight, segment);\n\n // There is a maximum \"distance along the line\" that we can store in the buffers.\n // When we get close to the distance, reset it to zero and add the vertex again with\n // a distance of zero. The max distance is determined by the number of bits we allocate\n // to `linesofar`.\n if (this.distance > MAX_LINE_DISTANCE / 2 && this.totalDistance === 0) {\n this.distance = 0;\n this.addCurrentVertex(p, normal, endLeft, endRight, segment, round);\n }\n }\n\n addHalfVertex({x, y}: Point, extrudeX: number, extrudeY: number, round: boolean, up: boolean, dir: number, segment: Segment) {\n const totalDistance = this.lineClips ? this.scaledDistance * (MAX_LINE_DISTANCE - 1) : this.scaledDistance;\n // scale down so that we can store longer distances while sacrificing precision.\n const linesofarScaled = totalDistance * LINE_DISTANCE_SCALE;\n\n this.layoutVertexArray.emplaceBack(\n // a_pos_normal\n // Encode round/up the least significant bits\n (x << 1) + (round ? 1 : 0),\n (y << 1) + (up ? 1 : 0),\n // a_data\n // add 128 to store a byte in an unsigned byte\n Math.round(EXTRUDE_SCALE * extrudeX) + 128,\n Math.round(EXTRUDE_SCALE * extrudeY) + 128,\n // Encode the -1/0/1 direction value into the first two bits of .z of a_data.\n // Combine it with the lower 6 bits of `linesofarScaled` (shifted by 2 bits to make\n // room for the direction value). The upper 8 bits of `linesofarScaled` are placed in\n // the `w` component.\n ((dir === 0 ? 0 : (dir < 0 ? -1 : 1)) + 1) | ((linesofarScaled & 0x3F) << 2),\n linesofarScaled >> 6);\n\n // Constructs a second vertex buffer with higher precision line progress\n if (this.lineClips) {\n const progressRealigned = this.scaledDistance - this.lineClips.start;\n const endClipRealigned = this.lineClips.end - this.lineClips.start;\n const uvX = progressRealigned / endClipRealigned;\n this.layoutVertexArray2.emplaceBack(uvX, this.lineClipsArray.length);\n }\n\n const e = segment.vertexLength++;\n if (this.e1 >= 0 && this.e2 >= 0) {\n this.indexArray.emplaceBack(this.e1, this.e2, e);\n segment.primitiveLength++;\n }\n if (up) {\n this.e2 = e;\n } else {\n this.e1 = e;\n }\n }\n\n updateScaledDistance() {\n // Knowing the ratio of the full linestring covered by this tiled feature, as well\n // as the total distance (in tile units) of this tiled feature, and the distance\n // (in tile units) of the current vertex, we can determine the relative distance\n // of this vertex along the full linestring feature and scale it to [0, 2^15)\n this.scaledDistance = this.lineClips ?\n this.lineClips.start + (this.lineClips.end - this.lineClips.start) * this.distance / this.totalDistance :\n this.distance;\n }\n\n updateDistance(prev: Point, next: Point) {\n this.distance += prev.dist(next);\n this.updateScaledDistance();\n }\n}\n\nregister('LineBucket', LineBucket, {omit: ['layers', 'patternFeatures']});\n\nexport default LineBucket;\n", "// This file is generated. Edit build/generate-style-code.js, then run `yarn run codegen`.\n// @flow\n/* eslint-disable */\n\nimport styleSpec from '../../style-spec/reference/latest';\n\nimport {\n Properties,\n DataConstantProperty,\n DataDrivenProperty,\n CrossFadedDataDrivenProperty,\n CrossFadedProperty,\n ColorRampProperty\n} from '../properties';\n\nimport type Color from '../../style-spec/util/color';\n\nimport type Formatted from '../../style-spec/expression/types/formatted';\n\nimport type ResolvedImage from '../../style-spec/expression/types/resolved_image';\n\nexport type LayoutProps = {|\n \"line-cap\": DataConstantProperty<\"butt\" | \"round\" | \"square\">,\n \"line-join\": DataDrivenProperty<\"bevel\" | \"round\" | \"miter\">,\n \"line-miter-limit\": DataConstantProperty,\n \"line-round-limit\": DataConstantProperty,\n \"line-sort-key\": DataDrivenProperty,\n|};\n\nconst layout: Properties = new Properties({\n \"line-cap\": new DataConstantProperty(styleSpec[\"layout_line\"][\"line-cap\"]),\n \"line-join\": new DataDrivenProperty(styleSpec[\"layout_line\"][\"line-join\"]),\n \"line-miter-limit\": new DataConstantProperty(styleSpec[\"layout_line\"][\"line-miter-limit\"]),\n \"line-round-limit\": new DataConstantProperty(styleSpec[\"layout_line\"][\"line-round-limit\"]),\n \"line-sort-key\": new DataDrivenProperty(styleSpec[\"layout_line\"][\"line-sort-key\"]),\n});\n\nexport type PaintProps = {|\n \"line-opacity\": DataDrivenProperty,\n \"line-color\": DataDrivenProperty,\n \"line-translate\": DataConstantProperty<[number, number]>,\n \"line-translate-anchor\": DataConstantProperty<\"map\" | \"viewport\">,\n \"line-width\": DataDrivenProperty,\n \"line-gap-width\": DataDrivenProperty,\n \"line-offset\": DataDrivenProperty,\n \"line-blur\": DataDrivenProperty,\n \"line-dasharray\": CrossFadedProperty>,\n \"line-pattern\": CrossFadedDataDrivenProperty,\n \"line-gradient\": ColorRampProperty,\n|};\n\nconst paint: Properties = new Properties({\n \"line-opacity\": new DataDrivenProperty(styleSpec[\"paint_line\"][\"line-opacity\"]),\n \"line-color\": new DataDrivenProperty(styleSpec[\"paint_line\"][\"line-color\"]),\n \"line-translate\": new DataConstantProperty(styleSpec[\"paint_line\"][\"line-translate\"]),\n \"line-translate-anchor\": new DataConstantProperty(styleSpec[\"paint_line\"][\"line-translate-anchor\"]),\n \"line-width\": new DataDrivenProperty(styleSpec[\"paint_line\"][\"line-width\"]),\n \"line-gap-width\": new DataDrivenProperty(styleSpec[\"paint_line\"][\"line-gap-width\"]),\n \"line-offset\": new DataDrivenProperty(styleSpec[\"paint_line\"][\"line-offset\"]),\n \"line-blur\": new DataDrivenProperty(styleSpec[\"paint_line\"][\"line-blur\"]),\n \"line-dasharray\": new CrossFadedProperty(styleSpec[\"paint_line\"][\"line-dasharray\"]),\n \"line-pattern\": new CrossFadedDataDrivenProperty(styleSpec[\"paint_line\"][\"line-pattern\"]),\n \"line-gradient\": new ColorRampProperty(styleSpec[\"paint_line\"][\"line-gradient\"]),\n});\n\n// Note: without adding the explicit type annotation, Flow infers weaker types\n// for these objects from their use in the constructor to StyleLayer, as\n// {layout?: Properties<...>, paint: Properties<...>}\nexport default ({ paint, layout }: $Exact<{\n paint: Properties, layout: Properties\n}>);\n", "// @flow\n\nimport Point from '@mapbox/point-geometry';\n\nimport StyleLayer from '../style_layer';\nimport LineBucket from '../../data/bucket/line_bucket';\nimport {polygonIntersectsBufferedMultiLine} from '../../util/intersection_tests';\nimport {getMaximumPaintValue, translateDistance, translate} from '../query_utils';\nimport properties from './line_style_layer_properties';\nimport {extend, MAX_SAFE_INTEGER} from '../../util/util';\nimport EvaluationParameters from '../evaluation_parameters';\nimport {Transitionable, Transitioning, Layout, PossiblyEvaluated, DataDrivenProperty} from '../properties';\n\nimport Step from '../../style-spec/expression/definitions/step';\nimport type {FeatureState, ZoomConstantExpression} from '../../style-spec/expression';\nimport type {Bucket, BucketParameters} from '../../data/bucket';\nimport type {LayoutProps, PaintProps} from './line_style_layer_properties';\nimport type Transform from '../../geo/transform';\nimport type {LayerSpecification} from '../../style-spec/types';\n\nclass LineFloorwidthProperty extends DataDrivenProperty {\n useIntegerZoom: true;\n\n possiblyEvaluate(value, parameters) {\n parameters = new EvaluationParameters(Math.floor(parameters.zoom), {\n now: parameters.now,\n fadeDuration: parameters.fadeDuration,\n zoomHistory: parameters.zoomHistory,\n transition: parameters.transition\n });\n return super.possiblyEvaluate(value, parameters);\n }\n\n evaluate(value, globals, feature, featureState) {\n globals = extend({}, globals, {zoom: Math.floor(globals.zoom)});\n return super.evaluate(value, globals, feature, featureState);\n }\n}\n\nconst lineFloorwidthProperty = new LineFloorwidthProperty(properties.paint.properties['line-width'].specification);\nlineFloorwidthProperty.useIntegerZoom = true;\n\nclass LineStyleLayer extends StyleLayer {\n _unevaluatedLayout: Layout;\n layout: PossiblyEvaluated;\n\n gradientVersion: number;\n stepInterpolant: boolean;\n\n _transitionablePaint: Transitionable;\n _transitioningPaint: Transitioning;\n paint: PossiblyEvaluated;\n\n constructor(layer: LayerSpecification) {\n super(layer, properties);\n this.gradientVersion = 0;\n }\n\n _handleSpecialPaintPropertyUpdate(name: string) {\n if (name === 'line-gradient') {\n const expression: ZoomConstantExpression<'source'> = ((this._transitionablePaint._values['line-gradient'].value.expression): any);\n this.stepInterpolant = expression._styleExpression.expression instanceof Step;\n this.gradientVersion = (this.gradientVersion + 1) % MAX_SAFE_INTEGER;\n }\n }\n\n gradientExpression() {\n return this._transitionablePaint._values['line-gradient'].value.expression;\n }\n\n recalculate(parameters: EvaluationParameters, availableImages: Array) {\n super.recalculate(parameters, availableImages);\n\n (this.paint._values: any)['line-floorwidth'] =\n lineFloorwidthProperty.possiblyEvaluate(this._transitioningPaint._values['line-width'].value, parameters);\n }\n\n createBucket(parameters: BucketParameters<*>) {\n return new LineBucket(parameters);\n }\n\n queryRadius(bucket: Bucket): number {\n const lineBucket: LineBucket = (bucket: any);\n const width = getLineWidth(\n getMaximumPaintValue('line-width', this, lineBucket),\n getMaximumPaintValue('line-gap-width', this, lineBucket));\n const offset = getMaximumPaintValue('line-offset', this, lineBucket);\n return width / 2 + Math.abs(offset) + translateDistance(this.paint.get('line-translate'));\n }\n\n queryIntersectsFeature(queryGeometry: Array,\n feature: VectorTileFeature,\n featureState: FeatureState,\n geometry: Array>,\n zoom: number,\n transform: Transform,\n pixelsToTileUnits: number): boolean {\n const translatedPolygon = translate(queryGeometry,\n this.paint.get('line-translate'),\n this.paint.get('line-translate-anchor'),\n transform.angle, pixelsToTileUnits);\n const halfWidth = pixelsToTileUnits / 2 * getLineWidth(\n this.paint.get('line-width').evaluate(feature, featureState),\n this.paint.get('line-gap-width').evaluate(feature, featureState));\n const lineOffset = this.paint.get('line-offset').evaluate(feature, featureState);\n if (lineOffset) {\n geometry = offsetLine(geometry, lineOffset * pixelsToTileUnits);\n }\n\n return polygonIntersectsBufferedMultiLine(translatedPolygon, geometry, halfWidth);\n }\n\n isTileClipped() {\n return true;\n }\n}\n\nexport default LineStyleLayer;\n\nfunction getLineWidth(lineWidth, lineGapWidth) {\n if (lineGapWidth > 0) {\n return lineGapWidth + 2 * lineWidth;\n } else {\n return lineWidth;\n }\n}\n\nfunction offsetLine(rings, offset) {\n const newRings = [];\n const zero = new Point(0, 0);\n for (let k = 0; k < rings.length; k++) {\n const ring = rings[k];\n const newRing = [];\n for (let i = 0; i < ring.length; i++) {\n const a = ring[i - 1];\n const b = ring[i];\n const c = ring[i + 1];\n const aToB = i === 0 ? zero : b.sub(a)._unit()._perp();\n const bToC = i === ring.length - 1 ? zero : c.sub(b)._unit()._perp();\n const extrude = aToB._add(bToC)._unit();\n\n const cosHalfAngle = extrude.x * bToC.x + extrude.y * bToC.y;\n extrude._mult(1 / cosHalfAngle);\n\n newRing.push(extrude._mult(offset)._add(b));\n }\n newRings.push(newRing);\n }\n return newRings;\n}\n", "// @flow\n\nimport {createLayout} from '../../util/struct_array';\n\nexport const symbolLayoutAttributes = createLayout([\n {name: 'a_pos_offset', components: 4, type: 'Int16'},\n {name: 'a_data', components: 4, type: 'Uint16'},\n {name: 'a_pixeloffset', components: 4, type: 'Int16'}\n], 4);\n\nexport const dynamicLayoutAttributes = createLayout([\n {name: 'a_projected_pos', components: 3, type: 'Float32'}\n], 4);\n\nexport const placementOpacityAttributes = createLayout([\n {name: 'a_fade_opacity', components: 1, type: 'Uint32'}\n], 4);\n\nexport const collisionVertexAttributes = createLayout([\n {name: 'a_placed', components: 2, type: 'Uint8'},\n {name: 'a_shift', components: 2, type: 'Float32'}\n]);\n\nexport const collisionBox = createLayout([\n // the box is centered around the anchor point\n {type: 'Int16', name: 'anchorPointX'},\n {type: 'Int16', name: 'anchorPointY'},\n\n // distances to the edges from the anchor\n {type: 'Int16', name: 'x1'},\n {type: 'Int16', name: 'y1'},\n {type: 'Int16', name: 'x2'},\n {type: 'Int16', name: 'y2'},\n\n // the index of the feature in the original vectortile\n {type: 'Uint32', name: 'featureIndex'},\n // the source layer the feature appears in\n {type: 'Uint16', name: 'sourceLayerIndex'},\n // the bucket the feature appears in\n {type: 'Uint16', name: 'bucketIndex'},\n]);\n\nexport const collisionBoxLayout = createLayout([ // used to render collision boxes for debugging purposes\n {name: 'a_pos', components: 2, type: 'Int16'},\n {name: 'a_anchor_pos', components: 2, type: 'Int16'},\n {name: 'a_extrude', components: 2, type: 'Int16'}\n], 4);\n\nexport const collisionCircleLayout = createLayout([ // used to render collision circles for debugging purposes\n {name: 'a_pos', components: 2, type: 'Float32'},\n {name: 'a_radius', components: 1, type: 'Float32'},\n {name: 'a_flags', components: 2, type: 'Int16'}\n], 4);\n\nexport const quadTriangle = createLayout([\n {name: 'triangle', components: 3, type: 'Uint16'},\n]);\n\nexport const placement = createLayout([\n {type: 'Int16', name: 'anchorX'},\n {type: 'Int16', name: 'anchorY'},\n {type: 'Uint16', name: 'glyphStartIndex'},\n {type: 'Uint16', name: 'numGlyphs'},\n {type: 'Uint32', name: 'vertexStartIndex'},\n {type: 'Uint32', name: 'lineStartIndex'},\n {type: 'Uint32', name: 'lineLength'},\n {type: 'Uint16', name: 'segment'},\n {type: 'Uint16', name: 'lowerSize'},\n {type: 'Uint16', name: 'upperSize'},\n {type: 'Float32', name: 'lineOffsetX'},\n {type: 'Float32', name: 'lineOffsetY'},\n {type: 'Uint8', name: 'writingMode'},\n {type: 'Uint8', name: 'placedOrientation'},\n {type: 'Uint8', name: 'hidden'},\n {type: 'Uint32', name: 'crossTileID'},\n {type: 'Int16', name: 'associatedIconIndex'}\n]);\n\nexport const symbolInstance = createLayout([\n {type: 'Int16', name: 'anchorX'},\n {type: 'Int16', name: 'anchorY'},\n {type: 'Int16', name: 'rightJustifiedTextSymbolIndex'},\n {type: 'Int16', name: 'centerJustifiedTextSymbolIndex'},\n {type: 'Int16', name: 'leftJustifiedTextSymbolIndex'},\n {type: 'Int16', name: 'verticalPlacedTextSymbolIndex'},\n {type: 'Int16', name: 'placedIconSymbolIndex'},\n {type: 'Int16', name: 'verticalPlacedIconSymbolIndex'},\n {type: 'Uint16', name: 'key'},\n {type: 'Uint16', name: 'textBoxStartIndex'},\n {type: 'Uint16', name: 'textBoxEndIndex'},\n {type: 'Uint16', name: 'verticalTextBoxStartIndex'},\n {type: 'Uint16', name: 'verticalTextBoxEndIndex'},\n {type: 'Uint16', name: 'iconBoxStartIndex'},\n {type: 'Uint16', name: 'iconBoxEndIndex'},\n {type: 'Uint16', name: 'verticalIconBoxStartIndex'},\n {type: 'Uint16', name: 'verticalIconBoxEndIndex'},\n {type: 'Uint16', name: 'featureIndex'},\n {type: 'Uint16', name: 'numHorizontalGlyphVertices'},\n {type: 'Uint16', name: 'numVerticalGlyphVertices'},\n {type: 'Uint16', name: 'numIconVertices'},\n {type: 'Uint16', name: 'numVerticalIconVertices'},\n {type: 'Uint16', name: 'useRuntimeCollisionCircles'},\n {type: 'Uint32', name: 'crossTileID'},\n {type: 'Float32', name: 'textBoxScale'},\n {type: 'Float32', components: 2, name: 'textOffset'},\n {type: 'Float32', name: 'collisionCircleDiameter'},\n]);\n\nexport const glyphOffset = createLayout([\n {type: 'Float32', name: 'offsetX'}\n]);\n\nexport const lineVertex = createLayout([\n {type: 'Int16', name: 'x'},\n {type: 'Int16', name: 'y'},\n {type: 'Int16', name: 'tileUnitDistanceFromAnchor'}\n]);\n", "// @flow\n\nimport {plugin as rtlTextPlugin} from '../source/rtl_text_plugin';\n\nimport type SymbolStyleLayer from '../style/style_layer/symbol_style_layer';\nimport type {Feature} from '../style-spec/expression';\nimport Formatted from '../style-spec/expression/types/formatted';\n\nfunction transformText(text: string, layer: SymbolStyleLayer, feature: Feature) {\n const transform = layer.layout.get('text-transform').evaluate(feature, {});\n if (transform === 'uppercase') {\n text = text.toLocaleUpperCase();\n } else if (transform === 'lowercase') {\n text = text.toLocaleLowerCase();\n }\n\n if (rtlTextPlugin.applyArabicShaping) {\n text = rtlTextPlugin.applyArabicShaping(text);\n }\n\n return text;\n}\n\nexport default function(text: Formatted, layer: SymbolStyleLayer, feature: Feature): Formatted {\n text.sections.forEach(section => {\n section.text = transformText(section.text, layer, feature);\n });\n return text;\n}\n", "// @flow\n\nimport {\n charHasRotatedVerticalOrientation,\n} from './script_detection';\n\nexport const verticalizedCharacterMap = {\n '!': '︕',\n '#': '#',\n '$': '$',\n '%': '%',\n '&': '&',\n '(': '︵',\n ')': '︶',\n '*': '*',\n '+': '+',\n ',': '︐',\n '-': '︲',\n '.': '・',\n '/': '/',\n ':': '︓',\n ';': '︔',\n '<': '︿',\n '=': '=',\n '>': '﹀',\n '?': '︖',\n '@': '@',\n '[': '﹇',\n '\\\\': '\',\n ']': '﹈',\n '^': '^',\n '_': '︳',\n '`': '`',\n '{': '︷',\n '|': '―',\n '}': '︸',\n '~': '~',\n '¢': '¢',\n '£': '£',\n '¥': '¥',\n '¦': '¦',\n '¬': '¬',\n '¯': ' ̄',\n '–': '︲',\n '—': '︱',\n '‘': '﹃',\n '’': '﹄',\n '“': '﹁',\n '”': '﹂',\n '…': '︙',\n '‧': '・',\n '₩': '₩',\n '、': '︑',\n '。': '︒',\n '〈': '︿',\n '〉': '﹀',\n '《': '︽',\n '》': '︾',\n '「': '﹁',\n '」': '﹂',\n '『': '﹃',\n '』': '﹄',\n '【': '︻',\n '】': '︼',\n '〔': '︹',\n '〕': '︺',\n '〖': '︗',\n '〗': '︘',\n '!': '︕',\n '(': '︵',\n ')': '︶',\n ',': '︐',\n '-': '︲',\n '.': '・',\n ':': '︓',\n ';': '︔',\n '<': '︿',\n '>': '﹀',\n '?': '︖',\n '[': '﹇',\n ']': '﹈',\n '_': '︳',\n '{': '︷',\n '|': '―',\n '}': '︸',\n '⦅': '︵',\n '⦆': '︶',\n '。': '︒',\n '「': '﹁',\n '」': '﹂'\n};\n\nexport default function verticalizePunctuation(input: string) {\n let output = '';\n\n for (let i = 0; i < input.length; i++) {\n const nextCharCode = input.charCodeAt(i + 1) || null;\n const prevCharCode = input.charCodeAt(i - 1) || null;\n\n const canReplacePunctuation = (\n (!nextCharCode || !charHasRotatedVerticalOrientation(nextCharCode) || verticalizedCharacterMap[input[i + 1]]) &&\n (!prevCharCode || !charHasRotatedVerticalOrientation(prevCharCode) || verticalizedCharacterMap[input[i - 1]])\n );\n\n if (canReplacePunctuation && verticalizedCharacterMap[input[i]]) {\n output += verticalizedCharacterMap[input[i]];\n } else {\n output += input[i];\n }\n }\n\n return output;\n}\n\n", "exports.read = function (buffer, offset, isLE, mLen, nBytes) {\n var e, m\n var eLen = (nBytes * 8) - mLen - 1\n var eMax = (1 << eLen) - 1\n var eBias = eMax >> 1\n var nBits = -7\n var i = isLE ? (nBytes - 1) : 0\n var d = isLE ? -1 : 1\n var s = buffer[offset + i]\n\n i += d\n\n e = s & ((1 << (-nBits)) - 1)\n s >>= (-nBits)\n nBits += eLen\n for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {}\n\n m = e & ((1 << (-nBits)) - 1)\n e >>= (-nBits)\n nBits += mLen\n for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {}\n\n if (e === 0) {\n e = 1 - eBias\n } else if (e === eMax) {\n return m ? NaN : ((s ? -1 : 1) * Infinity)\n } else {\n m = m + Math.pow(2, mLen)\n e = e - eBias\n }\n return (s ? -1 : 1) * m * Math.pow(2, e - mLen)\n}\n\nexports.write = function (buffer, value, offset, isLE, mLen, nBytes) {\n var e, m, c\n var eLen = (nBytes * 8) - mLen - 1\n var eMax = (1 << eLen) - 1\n var eBias = eMax >> 1\n var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)\n var i = isLE ? 0 : (nBytes - 1)\n var d = isLE ? 1 : -1\n var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0\n\n value = Math.abs(value)\n\n if (isNaN(value) || value === Infinity) {\n m = isNaN(value) ? 1 : 0\n e = eMax\n } else {\n e = Math.floor(Math.log(value) / Math.LN2)\n if (value * (c = Math.pow(2, -e)) < 1) {\n e--\n c *= 2\n }\n if (e + eBias >= 1) {\n value += rt / c\n } else {\n value += rt * Math.pow(2, 1 - eBias)\n }\n if (value * c >= 2) {\n e++\n c /= 2\n }\n\n if (e + eBias >= eMax) {\n m = 0\n e = eMax\n } else if (e + eBias >= 1) {\n m = ((value * c) - 1) * Math.pow(2, mLen)\n e = e + eBias\n } else {\n m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)\n e = 0\n }\n }\n\n for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}\n\n e = (e << mLen) | m\n eLen += mLen\n for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}\n\n buffer[offset + i - d] |= s * 128\n}\n", "'use strict';\n\nmodule.exports = Pbf;\n\nvar ieee754 = require('ieee754');\n\nfunction Pbf(buf) {\n this.buf = ArrayBuffer.isView && ArrayBuffer.isView(buf) ? buf : new Uint8Array(buf || 0);\n this.pos = 0;\n this.type = 0;\n this.length = this.buf.length;\n}\n\nPbf.Varint = 0; // varint: int32, int64, uint32, uint64, sint32, sint64, bool, enum\nPbf.Fixed64 = 1; // 64-bit: double, fixed64, sfixed64\nPbf.Bytes = 2; // length-delimited: string, bytes, embedded messages, packed repeated fields\nPbf.Fixed32 = 5; // 32-bit: float, fixed32, sfixed32\n\nvar SHIFT_LEFT_32 = (1 << 16) * (1 << 16),\n SHIFT_RIGHT_32 = 1 / SHIFT_LEFT_32;\n\n// Threshold chosen based on both benchmarking and knowledge about browser string\n// data structures (which currently switch structure types at 12 bytes or more)\nvar TEXT_DECODER_MIN_LENGTH = 12;\nvar utf8TextDecoder = typeof TextDecoder === 'undefined' ? null : new TextDecoder('utf8');\n\nPbf.prototype = {\n\n destroy: function() {\n this.buf = null;\n },\n\n // === READING =================================================================\n\n readFields: function(readField, result, end) {\n end = end || this.length;\n\n while (this.pos < end) {\n var val = this.readVarint(),\n tag = val >> 3,\n startPos = this.pos;\n\n this.type = val & 0x7;\n readField(tag, result, this);\n\n if (this.pos === startPos) this.skip(val);\n }\n return result;\n },\n\n readMessage: function(readField, result) {\n return this.readFields(readField, result, this.readVarint() + this.pos);\n },\n\n readFixed32: function() {\n var val = readUInt32(this.buf, this.pos);\n this.pos += 4;\n return val;\n },\n\n readSFixed32: function() {\n var val = readInt32(this.buf, this.pos);\n this.pos += 4;\n return val;\n },\n\n // 64-bit int handling is based on github.com/dpw/node-buffer-more-ints (MIT-licensed)\n\n readFixed64: function() {\n var val = readUInt32(this.buf, this.pos) + readUInt32(this.buf, this.pos + 4) * SHIFT_LEFT_32;\n this.pos += 8;\n return val;\n },\n\n readSFixed64: function() {\n var val = readUInt32(this.buf, this.pos) + readInt32(this.buf, this.pos + 4) * SHIFT_LEFT_32;\n this.pos += 8;\n return val;\n },\n\n readFloat: function() {\n var val = ieee754.read(this.buf, this.pos, true, 23, 4);\n this.pos += 4;\n return val;\n },\n\n readDouble: function() {\n var val = ieee754.read(this.buf, this.pos, true, 52, 8);\n this.pos += 8;\n return val;\n },\n\n readVarint: function(isSigned) {\n var buf = this.buf,\n val, b;\n\n b = buf[this.pos++]; val = b & 0x7f; if (b < 0x80) return val;\n b = buf[this.pos++]; val |= (b & 0x7f) << 7; if (b < 0x80) return val;\n b = buf[this.pos++]; val |= (b & 0x7f) << 14; if (b < 0x80) return val;\n b = buf[this.pos++]; val |= (b & 0x7f) << 21; if (b < 0x80) return val;\n b = buf[this.pos]; val |= (b & 0x0f) << 28;\n\n return readVarintRemainder(val, isSigned, this);\n },\n\n readVarint64: function() { // for compatibility with v2.0.1\n return this.readVarint(true);\n },\n\n readSVarint: function() {\n var num = this.readVarint();\n return num % 2 === 1 ? (num + 1) / -2 : num / 2; // zigzag encoding\n },\n\n readBoolean: function() {\n return Boolean(this.readVarint());\n },\n\n readString: function() {\n var end = this.readVarint() + this.pos;\n var pos = this.pos;\n this.pos = end;\n\n if (end - pos >= TEXT_DECODER_MIN_LENGTH && utf8TextDecoder) {\n // longer strings are fast with the built-in browser TextDecoder API\n return readUtf8TextDecoder(this.buf, pos, end);\n }\n // short strings are fast with our custom implementation\n return readUtf8(this.buf, pos, end);\n },\n\n readBytes: function() {\n var end = this.readVarint() + this.pos,\n buffer = this.buf.subarray(this.pos, end);\n this.pos = end;\n return buffer;\n },\n\n // verbose for performance reasons; doesn't affect gzipped size\n\n readPackedVarint: function(arr, isSigned) {\n if (this.type !== Pbf.Bytes) return arr.push(this.readVarint(isSigned));\n var end = readPackedEnd(this);\n arr = arr || [];\n while (this.pos < end) arr.push(this.readVarint(isSigned));\n return arr;\n },\n readPackedSVarint: function(arr) {\n if (this.type !== Pbf.Bytes) return arr.push(this.readSVarint());\n var end = readPackedEnd(this);\n arr = arr || [];\n while (this.pos < end) arr.push(this.readSVarint());\n return arr;\n },\n readPackedBoolean: function(arr) {\n if (this.type !== Pbf.Bytes) return arr.push(this.readBoolean());\n var end = readPackedEnd(this);\n arr = arr || [];\n while (this.pos < end) arr.push(this.readBoolean());\n return arr;\n },\n readPackedFloat: function(arr) {\n if (this.type !== Pbf.Bytes) return arr.push(this.readFloat());\n var end = readPackedEnd(this);\n arr = arr || [];\n while (this.pos < end) arr.push(this.readFloat());\n return arr;\n },\n readPackedDouble: function(arr) {\n if (this.type !== Pbf.Bytes) return arr.push(this.readDouble());\n var end = readPackedEnd(this);\n arr = arr || [];\n while (this.pos < end) arr.push(this.readDouble());\n return arr;\n },\n readPackedFixed32: function(arr) {\n if (this.type !== Pbf.Bytes) return arr.push(this.readFixed32());\n var end = readPackedEnd(this);\n arr = arr || [];\n while (this.pos < end) arr.push(this.readFixed32());\n return arr;\n },\n readPackedSFixed32: function(arr) {\n if (this.type !== Pbf.Bytes) return arr.push(this.readSFixed32());\n var end = readPackedEnd(this);\n arr = arr || [];\n while (this.pos < end) arr.push(this.readSFixed32());\n return arr;\n },\n readPackedFixed64: function(arr) {\n if (this.type !== Pbf.Bytes) return arr.push(this.readFixed64());\n var end = readPackedEnd(this);\n arr = arr || [];\n while (this.pos < end) arr.push(this.readFixed64());\n return arr;\n },\n readPackedSFixed64: function(arr) {\n if (this.type !== Pbf.Bytes) return arr.push(this.readSFixed64());\n var end = readPackedEnd(this);\n arr = arr || [];\n while (this.pos < end) arr.push(this.readSFixed64());\n return arr;\n },\n\n skip: function(val) {\n var type = val & 0x7;\n if (type === Pbf.Varint) while (this.buf[this.pos++] > 0x7f) {}\n else if (type === Pbf.Bytes) this.pos = this.readVarint() + this.pos;\n else if (type === Pbf.Fixed32) this.pos += 4;\n else if (type === Pbf.Fixed64) this.pos += 8;\n else throw new Error('Unimplemented type: ' + type);\n },\n\n // === WRITING =================================================================\n\n writeTag: function(tag, type) {\n this.writeVarint((tag << 3) | type);\n },\n\n realloc: function(min) {\n var length = this.length || 16;\n\n while (length < this.pos + min) length *= 2;\n\n if (length !== this.length) {\n var buf = new Uint8Array(length);\n buf.set(this.buf);\n this.buf = buf;\n this.length = length;\n }\n },\n\n finish: function() {\n this.length = this.pos;\n this.pos = 0;\n return this.buf.subarray(0, this.length);\n },\n\n writeFixed32: function(val) {\n this.realloc(4);\n writeInt32(this.buf, val, this.pos);\n this.pos += 4;\n },\n\n writeSFixed32: function(val) {\n this.realloc(4);\n writeInt32(this.buf, val, this.pos);\n this.pos += 4;\n },\n\n writeFixed64: function(val) {\n this.realloc(8);\n writeInt32(this.buf, val & -1, this.pos);\n writeInt32(this.buf, Math.floor(val * SHIFT_RIGHT_32), this.pos + 4);\n this.pos += 8;\n },\n\n writeSFixed64: function(val) {\n this.realloc(8);\n writeInt32(this.buf, val & -1, this.pos);\n writeInt32(this.buf, Math.floor(val * SHIFT_RIGHT_32), this.pos + 4);\n this.pos += 8;\n },\n\n writeVarint: function(val) {\n val = +val || 0;\n\n if (val > 0xfffffff || val < 0) {\n writeBigVarint(val, this);\n return;\n }\n\n this.realloc(4);\n\n this.buf[this.pos++] = val & 0x7f | (val > 0x7f ? 0x80 : 0); if (val <= 0x7f) return;\n this.buf[this.pos++] = ((val >>>= 7) & 0x7f) | (val > 0x7f ? 0x80 : 0); if (val <= 0x7f) return;\n this.buf[this.pos++] = ((val >>>= 7) & 0x7f) | (val > 0x7f ? 0x80 : 0); if (val <= 0x7f) return;\n this.buf[this.pos++] = (val >>> 7) & 0x7f;\n },\n\n writeSVarint: function(val) {\n this.writeVarint(val < 0 ? -val * 2 - 1 : val * 2);\n },\n\n writeBoolean: function(val) {\n this.writeVarint(Boolean(val));\n },\n\n writeString: function(str) {\n str = String(str);\n this.realloc(str.length * 4);\n\n this.pos++; // reserve 1 byte for short string length\n\n var startPos = this.pos;\n // write the string directly to the buffer and see how much was written\n this.pos = writeUtf8(this.buf, str, this.pos);\n var len = this.pos - startPos;\n\n if (len >= 0x80) makeRoomForExtraLength(startPos, len, this);\n\n // finally, write the message length in the reserved place and restore the position\n this.pos = startPos - 1;\n this.writeVarint(len);\n this.pos += len;\n },\n\n writeFloat: function(val) {\n this.realloc(4);\n ieee754.write(this.buf, val, this.pos, true, 23, 4);\n this.pos += 4;\n },\n\n writeDouble: function(val) {\n this.realloc(8);\n ieee754.write(this.buf, val, this.pos, true, 52, 8);\n this.pos += 8;\n },\n\n writeBytes: function(buffer) {\n var len = buffer.length;\n this.writeVarint(len);\n this.realloc(len);\n for (var i = 0; i < len; i++) this.buf[this.pos++] = buffer[i];\n },\n\n writeRawMessage: function(fn, obj) {\n this.pos++; // reserve 1 byte for short message length\n\n // write the message directly to the buffer and see how much was written\n var startPos = this.pos;\n fn(obj, this);\n var len = this.pos - startPos;\n\n if (len >= 0x80) makeRoomForExtraLength(startPos, len, this);\n\n // finally, write the message length in the reserved place and restore the position\n this.pos = startPos - 1;\n this.writeVarint(len);\n this.pos += len;\n },\n\n writeMessage: function(tag, fn, obj) {\n this.writeTag(tag, Pbf.Bytes);\n this.writeRawMessage(fn, obj);\n },\n\n writePackedVarint: function(tag, arr) { if (arr.length) this.writeMessage(tag, writePackedVarint, arr); },\n writePackedSVarint: function(tag, arr) { if (arr.length) this.writeMessage(tag, writePackedSVarint, arr); },\n writePackedBoolean: function(tag, arr) { if (arr.length) this.writeMessage(tag, writePackedBoolean, arr); },\n writePackedFloat: function(tag, arr) { if (arr.length) this.writeMessage(tag, writePackedFloat, arr); },\n writePackedDouble: function(tag, arr) { if (arr.length) this.writeMessage(tag, writePackedDouble, arr); },\n writePackedFixed32: function(tag, arr) { if (arr.length) this.writeMessage(tag, writePackedFixed32, arr); },\n writePackedSFixed32: function(tag, arr) { if (arr.length) this.writeMessage(tag, writePackedSFixed32, arr); },\n writePackedFixed64: function(tag, arr) { if (arr.length) this.writeMessage(tag, writePackedFixed64, arr); },\n writePackedSFixed64: function(tag, arr) { if (arr.length) this.writeMessage(tag, writePackedSFixed64, arr); },\n\n writeBytesField: function(tag, buffer) {\n this.writeTag(tag, Pbf.Bytes);\n this.writeBytes(buffer);\n },\n writeFixed32Field: function(tag, val) {\n this.writeTag(tag, Pbf.Fixed32);\n this.writeFixed32(val);\n },\n writeSFixed32Field: function(tag, val) {\n this.writeTag(tag, Pbf.Fixed32);\n this.writeSFixed32(val);\n },\n writeFixed64Field: function(tag, val) {\n this.writeTag(tag, Pbf.Fixed64);\n this.writeFixed64(val);\n },\n writeSFixed64Field: function(tag, val) {\n this.writeTag(tag, Pbf.Fixed64);\n this.writeSFixed64(val);\n },\n writeVarintField: function(tag, val) {\n this.writeTag(tag, Pbf.Varint);\n this.writeVarint(val);\n },\n writeSVarintField: function(tag, val) {\n this.writeTag(tag, Pbf.Varint);\n this.writeSVarint(val);\n },\n writeStringField: function(tag, str) {\n this.writeTag(tag, Pbf.Bytes);\n this.writeString(str);\n },\n writeFloatField: function(tag, val) {\n this.writeTag(tag, Pbf.Fixed32);\n this.writeFloat(val);\n },\n writeDoubleField: function(tag, val) {\n this.writeTag(tag, Pbf.Fixed64);\n this.writeDouble(val);\n },\n writeBooleanField: function(tag, val) {\n this.writeVarintField(tag, Boolean(val));\n }\n};\n\nfunction readVarintRemainder(l, s, p) {\n var buf = p.buf,\n h, b;\n\n b = buf[p.pos++]; h = (b & 0x70) >> 4; if (b < 0x80) return toNum(l, h, s);\n b = buf[p.pos++]; h |= (b & 0x7f) << 3; if (b < 0x80) return toNum(l, h, s);\n b = buf[p.pos++]; h |= (b & 0x7f) << 10; if (b < 0x80) return toNum(l, h, s);\n b = buf[p.pos++]; h |= (b & 0x7f) << 17; if (b < 0x80) return toNum(l, h, s);\n b = buf[p.pos++]; h |= (b & 0x7f) << 24; if (b < 0x80) return toNum(l, h, s);\n b = buf[p.pos++]; h |= (b & 0x01) << 31; if (b < 0x80) return toNum(l, h, s);\n\n throw new Error('Expected varint not more than 10 bytes');\n}\n\nfunction readPackedEnd(pbf) {\n return pbf.type === Pbf.Bytes ?\n pbf.readVarint() + pbf.pos : pbf.pos + 1;\n}\n\nfunction toNum(low, high, isSigned) {\n if (isSigned) {\n return high * 0x100000000 + (low >>> 0);\n }\n\n return ((high >>> 0) * 0x100000000) + (low >>> 0);\n}\n\nfunction writeBigVarint(val, pbf) {\n var low, high;\n\n if (val >= 0) {\n low = (val % 0x100000000) | 0;\n high = (val / 0x100000000) | 0;\n } else {\n low = ~(-val % 0x100000000);\n high = ~(-val / 0x100000000);\n\n if (low ^ 0xffffffff) {\n low = (low + 1) | 0;\n } else {\n low = 0;\n high = (high + 1) | 0;\n }\n }\n\n if (val >= 0x10000000000000000 || val < -0x10000000000000000) {\n throw new Error('Given varint doesn\\'t fit into 10 bytes');\n }\n\n pbf.realloc(10);\n\n writeBigVarintLow(low, high, pbf);\n writeBigVarintHigh(high, pbf);\n}\n\nfunction writeBigVarintLow(low, high, pbf) {\n pbf.buf[pbf.pos++] = low & 0x7f | 0x80; low >>>= 7;\n pbf.buf[pbf.pos++] = low & 0x7f | 0x80; low >>>= 7;\n pbf.buf[pbf.pos++] = low & 0x7f | 0x80; low >>>= 7;\n pbf.buf[pbf.pos++] = low & 0x7f | 0x80; low >>>= 7;\n pbf.buf[pbf.pos] = low & 0x7f;\n}\n\nfunction writeBigVarintHigh(high, pbf) {\n var lsb = (high & 0x07) << 4;\n\n pbf.buf[pbf.pos++] |= lsb | ((high >>>= 3) ? 0x80 : 0); if (!high) return;\n pbf.buf[pbf.pos++] = high & 0x7f | ((high >>>= 7) ? 0x80 : 0); if (!high) return;\n pbf.buf[pbf.pos++] = high & 0x7f | ((high >>>= 7) ? 0x80 : 0); if (!high) return;\n pbf.buf[pbf.pos++] = high & 0x7f | ((high >>>= 7) ? 0x80 : 0); if (!high) return;\n pbf.buf[pbf.pos++] = high & 0x7f | ((high >>>= 7) ? 0x80 : 0); if (!high) return;\n pbf.buf[pbf.pos++] = high & 0x7f;\n}\n\nfunction makeRoomForExtraLength(startPos, len, pbf) {\n var extraLen =\n len <= 0x3fff ? 1 :\n len <= 0x1fffff ? 2 :\n len <= 0xfffffff ? 3 : Math.floor(Math.log(len) / (Math.LN2 * 7));\n\n // if 1 byte isn't enough for encoding message length, shift the data to the right\n pbf.realloc(extraLen);\n for (var i = pbf.pos - 1; i >= startPos; i--) pbf.buf[i + extraLen] = pbf.buf[i];\n}\n\nfunction writePackedVarint(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeVarint(arr[i]); }\nfunction writePackedSVarint(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeSVarint(arr[i]); }\nfunction writePackedFloat(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeFloat(arr[i]); }\nfunction writePackedDouble(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeDouble(arr[i]); }\nfunction writePackedBoolean(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeBoolean(arr[i]); }\nfunction writePackedFixed32(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeFixed32(arr[i]); }\nfunction writePackedSFixed32(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeSFixed32(arr[i]); }\nfunction writePackedFixed64(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeFixed64(arr[i]); }\nfunction writePackedSFixed64(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeSFixed64(arr[i]); }\n\n// Buffer code below from https://github.com/feross/buffer, MIT-licensed\n\nfunction readUInt32(buf, pos) {\n return ((buf[pos]) |\n (buf[pos + 1] << 8) |\n (buf[pos + 2] << 16)) +\n (buf[pos + 3] * 0x1000000);\n}\n\nfunction writeInt32(buf, val, pos) {\n buf[pos] = val;\n buf[pos + 1] = (val >>> 8);\n buf[pos + 2] = (val >>> 16);\n buf[pos + 3] = (val >>> 24);\n}\n\nfunction readInt32(buf, pos) {\n return ((buf[pos]) |\n (buf[pos + 1] << 8) |\n (buf[pos + 2] << 16)) +\n (buf[pos + 3] << 24);\n}\n\nfunction readUtf8(buf, pos, end) {\n var str = '';\n var i = pos;\n\n while (i < end) {\n var b0 = buf[i];\n var c = null; // codepoint\n var bytesPerSequence =\n b0 > 0xEF ? 4 :\n b0 > 0xDF ? 3 :\n b0 > 0xBF ? 2 : 1;\n\n if (i + bytesPerSequence > end) break;\n\n var b1, b2, b3;\n\n if (bytesPerSequence === 1) {\n if (b0 < 0x80) {\n c = b0;\n }\n } else if (bytesPerSequence === 2) {\n b1 = buf[i + 1];\n if ((b1 & 0xC0) === 0x80) {\n c = (b0 & 0x1F) << 0x6 | (b1 & 0x3F);\n if (c <= 0x7F) {\n c = null;\n }\n }\n } else if (bytesPerSequence === 3) {\n b1 = buf[i + 1];\n b2 = buf[i + 2];\n if ((b1 & 0xC0) === 0x80 && (b2 & 0xC0) === 0x80) {\n c = (b0 & 0xF) << 0xC | (b1 & 0x3F) << 0x6 | (b2 & 0x3F);\n if (c <= 0x7FF || (c >= 0xD800 && c <= 0xDFFF)) {\n c = null;\n }\n }\n } else if (bytesPerSequence === 4) {\n b1 = buf[i + 1];\n b2 = buf[i + 2];\n b3 = buf[i + 3];\n if ((b1 & 0xC0) === 0x80 && (b2 & 0xC0) === 0x80 && (b3 & 0xC0) === 0x80) {\n c = (b0 & 0xF) << 0x12 | (b1 & 0x3F) << 0xC | (b2 & 0x3F) << 0x6 | (b3 & 0x3F);\n if (c <= 0xFFFF || c >= 0x110000) {\n c = null;\n }\n }\n }\n\n if (c === null) {\n c = 0xFFFD;\n bytesPerSequence = 1;\n\n } else if (c > 0xFFFF) {\n c -= 0x10000;\n str += String.fromCharCode(c >>> 10 & 0x3FF | 0xD800);\n c = 0xDC00 | c & 0x3FF;\n }\n\n str += String.fromCharCode(c);\n i += bytesPerSequence;\n }\n\n return str;\n}\n\nfunction readUtf8TextDecoder(buf, pos, end) {\n return utf8TextDecoder.decode(buf.subarray(pos, end));\n}\n\nfunction writeUtf8(buf, str, pos) {\n for (var i = 0, c, lead; i < str.length; i++) {\n c = str.charCodeAt(i); // code point\n\n if (c > 0xD7FF && c < 0xE000) {\n if (lead) {\n if (c < 0xDC00) {\n buf[pos++] = 0xEF;\n buf[pos++] = 0xBF;\n buf[pos++] = 0xBD;\n lead = c;\n continue;\n } else {\n c = lead - 0xD800 << 10 | c - 0xDC00 | 0x10000;\n lead = null;\n }\n } else {\n if (c > 0xDBFF || (i + 1 === str.length)) {\n buf[pos++] = 0xEF;\n buf[pos++] = 0xBF;\n buf[pos++] = 0xBD;\n } else {\n lead = c;\n }\n continue;\n }\n } else if (lead) {\n buf[pos++] = 0xEF;\n buf[pos++] = 0xBF;\n buf[pos++] = 0xBD;\n lead = null;\n }\n\n if (c < 0x80) {\n buf[pos++] = c;\n } else {\n if (c < 0x800) {\n buf[pos++] = c >> 0x6 | 0xC0;\n } else {\n if (c < 0x10000) {\n buf[pos++] = c >> 0xC | 0xE0;\n } else {\n buf[pos++] = c >> 0x12 | 0xF0;\n buf[pos++] = c >> 0xC & 0x3F | 0x80;\n }\n buf[pos++] = c >> 0x6 & 0x3F | 0x80;\n }\n buf[pos++] = c & 0x3F | 0x80;\n }\n }\n return pos;\n}\n", "// @flow\n\nimport {AlphaImage} from '../util/image';\n\nimport Protobuf from 'pbf';\nconst border = 3;\n\nimport type {StyleGlyph} from './style_glyph';\n\nfunction readFontstacks(tag: number, glyphs: Array, pbf: Protobuf) {\n if (tag === 1) {\n pbf.readMessage(readFontstack, glyphs);\n }\n}\n\nfunction readFontstack(tag: number, glyphs: Array, pbf: Protobuf) {\n if (tag === 3) {\n const {id, bitmap, width, height, left, top, advance} = pbf.readMessage(readGlyph, {});\n glyphs.push({\n id,\n bitmap: new AlphaImage({\n width: width + 2 * border,\n height: height + 2 * border\n }, bitmap),\n metrics: {width, height, left, top, advance}\n });\n }\n}\n\nfunction readGlyph(tag: number, glyph: Object, pbf: Protobuf) {\n if (tag === 1) glyph.id = pbf.readVarint();\n else if (tag === 2) glyph.bitmap = pbf.readBytes();\n else if (tag === 3) glyph.width = pbf.readVarint();\n else if (tag === 4) glyph.height = pbf.readVarint();\n else if (tag === 5) glyph.left = pbf.readSVarint();\n else if (tag === 6) glyph.top = pbf.readSVarint();\n else if (tag === 7) glyph.advance = pbf.readVarint();\n}\n\nexport default function (data: ArrayBuffer | Uint8Array): Array {\n return new Protobuf(data).readFields(readFontstacks, []);\n}\n\nexport const GLYPH_PBF_BORDER = border;\n", "\nexport default function potpack(boxes) {\n\n // calculate total box area and maximum box width\n let area = 0;\n let maxWidth = 0;\n\n for (const box of boxes) {\n area += box.w * box.h;\n maxWidth = Math.max(maxWidth, box.w);\n }\n\n // sort the boxes for insertion by height, descending\n boxes.sort((a, b) => b.h - a.h);\n\n // aim for a squarish resulting container,\n // slightly adjusted for sub-100% space utilization\n const startWidth = Math.max(Math.ceil(Math.sqrt(area / 0.95)), maxWidth);\n\n // start with a single empty space, unbounded at the bottom\n const spaces = [{x: 0, y: 0, w: startWidth, h: Infinity}];\n\n let width = 0;\n let height = 0;\n\n for (const box of boxes) {\n // look through spaces backwards so that we check smaller spaces first\n for (let i = spaces.length - 1; i >= 0; i--) {\n const space = spaces[i];\n\n // look for empty spaces that can accommodate the current box\n if (box.w > space.w || box.h > space.h) continue;\n\n // found the space; add the box to its top-left corner\n // |-------|-------|\n // | box | |\n // |_______| |\n // | space |\n // |_______________|\n box.x = space.x;\n box.y = space.y;\n\n height = Math.max(height, box.y + box.h);\n width = Math.max(width, box.x + box.w);\n\n if (box.w === space.w && box.h === space.h) {\n // space matches the box exactly; remove it\n const last = spaces.pop();\n if (i < spaces.length) spaces[i] = last;\n\n } else if (box.h === space.h) {\n // space matches the box height; update it accordingly\n // |-------|---------------|\n // | box | updated space |\n // |_______|_______________|\n space.x += box.w;\n space.w -= box.w;\n\n } else if (box.w === space.w) {\n // space matches the box width; update it accordingly\n // |---------------|\n // | box |\n // |_______________|\n // | updated space |\n // |_______________|\n space.y += box.h;\n space.h -= box.h;\n\n } else {\n // otherwise the box splits the space into two spaces\n // |-------|-----------|\n // | box | new space |\n // |_______|___________|\n // | updated space |\n // |___________________|\n spaces.push({\n x: space.x + box.w,\n y: space.y,\n w: space.w - box.w,\n h: box.h\n });\n space.y += box.h;\n space.h -= box.h;\n }\n break;\n }\n }\n\n return {\n w: width, // container width\n h: height, // container height\n fill: (area / (width * height)) || 0 // space utilization\n };\n}\n", "// @flow\n\nimport {RGBAImage} from '../util/image';\nimport {register} from '../util/web_worker_transfer';\nimport potpack from 'potpack';\n\nimport type {StyleImage} from '../style/style_image';\nimport type ImageManager from './image_manager';\nimport type Texture from './texture';\n\nconst IMAGE_PADDING: number = 1;\nexport {IMAGE_PADDING};\n\ntype Rect = {\n x: number,\n y: number,\n w: number,\n h: number\n};\n\nexport class ImagePosition {\n paddedRect: Rect;\n pixelRatio: number;\n version: number;\n stretchY: ?Array<[number, number]>;\n stretchX: ?Array<[number, number]>;\n content: ?[number, number, number, number];\n\n constructor(paddedRect: Rect, {pixelRatio, version, stretchX, stretchY, content}: StyleImage) {\n this.paddedRect = paddedRect;\n this.pixelRatio = pixelRatio;\n this.stretchX = stretchX;\n this.stretchY = stretchY;\n this.content = content;\n this.version = version;\n }\n\n get tl(): [number, number] {\n return [\n this.paddedRect.x + IMAGE_PADDING,\n this.paddedRect.y + IMAGE_PADDING\n ];\n }\n\n get br(): [number, number] {\n return [\n this.paddedRect.x + this.paddedRect.w - IMAGE_PADDING,\n this.paddedRect.y + this.paddedRect.h - IMAGE_PADDING\n ];\n }\n\n get tlbr(): Array {\n return this.tl.concat(this.br);\n }\n\n get displaySize(): [number, number] {\n return [\n (this.paddedRect.w - IMAGE_PADDING * 2) / this.pixelRatio,\n (this.paddedRect.h - IMAGE_PADDING * 2) / this.pixelRatio\n ];\n }\n}\n\nexport default class ImageAtlas {\n image: RGBAImage;\n iconPositions: {[_: string]: ImagePosition};\n patternPositions: {[_: string]: ImagePosition};\n haveRenderCallbacks: Array;\n uploaded: ?boolean;\n\n constructor(icons: {[_: string]: StyleImage}, patterns: {[_: string]: StyleImage}) {\n const iconPositions = {}, patternPositions = {};\n this.haveRenderCallbacks = [];\n\n const bins = [];\n\n this.addImages(icons, iconPositions, bins);\n this.addImages(patterns, patternPositions, bins);\n\n const {w, h} = potpack(bins);\n const image = new RGBAImage({width: w || 1, height: h || 1});\n\n for (const id in icons) {\n const src = icons[id];\n const bin = iconPositions[id].paddedRect;\n RGBAImage.copy(src.data, image, {x: 0, y: 0}, {x: bin.x + IMAGE_PADDING, y: bin.y + IMAGE_PADDING}, src.data);\n }\n\n for (const id in patterns) {\n const src = patterns[id];\n const bin = patternPositions[id].paddedRect;\n const x = bin.x + IMAGE_PADDING,\n y = bin.y + IMAGE_PADDING,\n w = src.data.width,\n h = src.data.height;\n\n RGBAImage.copy(src.data, image, {x: 0, y: 0}, {x, y}, src.data);\n // Add 1 pixel wrapped padding on each side of the image.\n RGBAImage.copy(src.data, image, {x: 0, y: h - 1}, {x, y: y - 1}, {width: w, height: 1}); // T\n RGBAImage.copy(src.data, image, {x: 0, y: 0}, {x, y: y + h}, {width: w, height: 1}); // B\n RGBAImage.copy(src.data, image, {x: w - 1, y: 0}, {x: x - 1, y}, {width: 1, height: h}); // L\n RGBAImage.copy(src.data, image, {x: 0, y: 0}, {x: x + w, y}, {width: 1, height: h}); // R\n }\n\n this.image = image;\n this.iconPositions = iconPositions;\n this.patternPositions = patternPositions;\n }\n\n addImages(images: {[_: string]: StyleImage}, positions: {[_: string]: ImagePosition}, bins: Array) {\n for (const id in images) {\n const src = images[id];\n const bin = {\n x: 0,\n y: 0,\n w: src.data.width + 2 * IMAGE_PADDING,\n h: src.data.height + 2 * IMAGE_PADDING,\n };\n bins.push(bin);\n positions[id] = new ImagePosition(bin, src);\n\n if (src.hasRenderCallback) {\n this.haveRenderCallbacks.push(id);\n }\n }\n }\n\n patchUpdatedImages(imageManager: ImageManager, texture: Texture) {\n imageManager.dispatchRenderCallbacks(this.haveRenderCallbacks);\n for (const name in imageManager.updatedImages) {\n this.patchUpdatedImage(this.iconPositions[name], imageManager.getImage(name), texture);\n this.patchUpdatedImage(this.patternPositions[name], imageManager.getImage(name), texture);\n }\n }\n\n patchUpdatedImage(position: ?ImagePosition, image: ?StyleImage, texture: Texture) {\n if (!position || !image) return;\n\n if (position.version === image.version) return;\n\n position.version = image.version;\n const [x, y] = position.tl;\n texture.update(image.data, undefined, {x, y});\n }\n\n}\n\nregister('ImagePosition', ImagePosition);\nregister('ImageAtlas', ImageAtlas);\n", "// @flow\n\nimport assert from 'assert';\nimport {\n charHasUprightVerticalOrientation,\n charAllowsIdeographicBreaking,\n charInComplexShapingScript\n} from '../util/script_detection';\nimport verticalizePunctuation from '../util/verticalize_punctuation';\nimport {plugin as rtlTextPlugin} from '../source/rtl_text_plugin';\nimport ONE_EM from './one_em';\nimport {warnOnce} from '../util/util';\n\nimport type {StyleGlyph, GlyphMetrics} from '../style/style_glyph';\nimport {GLYPH_PBF_BORDER} from '../style/parse_glyph_pbf';\nimport type {ImagePosition} from '../render/image_atlas';\nimport {IMAGE_PADDING} from '../render/image_atlas';\nimport type {Rect, GlyphPosition} from '../render/glyph_atlas';\nimport Formatted, {FormattedSection} from '../style-spec/expression/types/formatted';\n\nconst WritingMode = {\n horizontal: 1,\n vertical: 2,\n horizontalOnly: 3\n};\n\nconst SHAPING_DEFAULT_OFFSET = -17;\nexport {shapeText, shapeIcon, fitIconToText, getAnchorAlignment, WritingMode, SHAPING_DEFAULT_OFFSET};\n\n// The position of a glyph relative to the text's anchor point.\nexport type PositionedGlyph = {\n glyph: number,\n imageName: string | null,\n x: number,\n y: number,\n vertical: boolean,\n scale: number,\n fontStack: string,\n sectionIndex: number,\n metrics: GlyphMetrics,\n rect: Rect | null\n};\n\nexport type PositionedLine = {\n positionedGlyphs: Array,\n lineOffset: number\n};\n\n// A collection of positioned glyphs and some metadata\nexport type Shaping = {\n positionedLines: Array,\n top: number,\n bottom: number,\n left: number,\n right: number,\n writingMode: 1 | 2,\n text: string,\n iconsInText: boolean,\n verticalizable: boolean\n};\n\nfunction isEmpty(positionedLines: Array) {\n for (const line of positionedLines) {\n if (line.positionedGlyphs.length !== 0) {\n return false;\n }\n }\n return true;\n}\n\nexport type SymbolAnchor = 'center' | 'left' | 'right' | 'top' | 'bottom' | 'top-left' | 'top-right' | 'bottom-left' | 'bottom-right';\nexport type TextJustify = 'left' | 'center' | 'right';\n\n// Max number of images in label is 6401 U+E000–U+F8FF that covers\n// Basic Multilingual Plane Unicode Private Use Area (PUA).\nconst PUAbegin = 0xE000;\nconst PUAend = 0xF8FF;\n\nclass SectionOptions {\n // Text options\n scale: number;\n fontStack: string;\n // Image options\n imageName: string | null;\n\n constructor() {\n this.scale = 1.0;\n this.fontStack = \"\";\n this.imageName = null;\n }\n\n static forText(scale: number | null, fontStack: string) {\n const textOptions = new SectionOptions();\n textOptions.scale = scale || 1;\n textOptions.fontStack = fontStack;\n return textOptions;\n }\n\n static forImage(imageName: string) {\n const imageOptions = new SectionOptions();\n imageOptions.imageName = imageName;\n return imageOptions;\n }\n\n}\n\nclass TaggedString {\n text: string;\n sectionIndex: Array // maps each character in 'text' to its corresponding entry in 'sections'\n sections: Array\n imageSectionID: number | null;\n\n constructor() {\n this.text = \"\";\n this.sectionIndex = [];\n this.sections = [];\n this.imageSectionID = null;\n }\n\n static fromFeature(text: Formatted, defaultFontStack: string) {\n const result = new TaggedString();\n for (let i = 0; i < text.sections.length; i++) {\n const section = text.sections[i];\n if (!section.image) {\n result.addTextSection(section, defaultFontStack);\n } else {\n result.addImageSection(section);\n }\n }\n return result;\n }\n\n length(): number {\n return this.text.length;\n }\n\n getSection(index: number): SectionOptions {\n return this.sections[this.sectionIndex[index]];\n }\n\n getSectionIndex(index: number): number {\n return this.sectionIndex[index];\n }\n\n getCharCode(index: number): number {\n return this.text.charCodeAt(index);\n }\n\n verticalizePunctuation() {\n this.text = verticalizePunctuation(this.text);\n }\n\n trim() {\n let beginningWhitespace = 0;\n for (let i = 0;\n i < this.text.length && whitespace[this.text.charCodeAt(i)];\n i++) {\n beginningWhitespace++;\n }\n let trailingWhitespace = this.text.length;\n for (let i = this.text.length - 1;\n i >= 0 && i >= beginningWhitespace && whitespace[this.text.charCodeAt(i)];\n i--) {\n trailingWhitespace--;\n }\n this.text = this.text.substring(beginningWhitespace, trailingWhitespace);\n this.sectionIndex = this.sectionIndex.slice(beginningWhitespace, trailingWhitespace);\n }\n\n substring(start: number, end: number): TaggedString {\n const substring = new TaggedString();\n substring.text = this.text.substring(start, end);\n substring.sectionIndex = this.sectionIndex.slice(start, end);\n substring.sections = this.sections;\n return substring;\n }\n\n toString(): string {\n return this.text;\n }\n\n getMaxScale() {\n return this.sectionIndex.reduce((max, index) => Math.max(max, this.sections[index].scale), 0);\n }\n\n addTextSection(section: FormattedSection, defaultFontStack: string) {\n this.text += section.text;\n this.sections.push(SectionOptions.forText(section.scale, section.fontStack || defaultFontStack));\n const index = this.sections.length - 1;\n for (let i = 0; i < section.text.length; ++i) {\n this.sectionIndex.push(index);\n }\n }\n\n addImageSection(section: FormattedSection) {\n const imageName = section.image ? section.image.name : '';\n if (imageName.length === 0) {\n warnOnce(`Can't add FormattedSection with an empty image.`);\n return;\n }\n\n const nextImageSectionCharCode = this.getNextImageSectionCharCode();\n if (!nextImageSectionCharCode) {\n warnOnce(`Reached maximum number of images ${PUAend - PUAbegin + 2}`);\n return;\n }\n\n this.text += String.fromCharCode(nextImageSectionCharCode);\n this.sections.push(SectionOptions.forImage(imageName));\n this.sectionIndex.push(this.sections.length - 1);\n }\n\n getNextImageSectionCharCode(): number | null {\n if (!this.imageSectionID) {\n this.imageSectionID = PUAbegin;\n return this.imageSectionID;\n }\n\n if (this.imageSectionID >= PUAend) return null;\n return ++this.imageSectionID;\n }\n}\n\nfunction breakLines(input: TaggedString, lineBreakPoints: Array): Array {\n const lines = [];\n const text = input.text;\n let start = 0;\n for (const lineBreak of lineBreakPoints) {\n lines.push(input.substring(start, lineBreak));\n start = lineBreak;\n }\n\n if (start < text.length) {\n lines.push(input.substring(start, text.length));\n }\n return lines;\n}\n\nfunction shapeText(text: Formatted,\n glyphMap: {[_: string]: {[_: number]: ?StyleGlyph}},\n glyphPositions: {[_: string]: {[_: number]: GlyphPosition}},\n imagePositions: {[_: string]: ImagePosition},\n defaultFontStack: string,\n maxWidth: number,\n lineHeight: number,\n textAnchor: SymbolAnchor,\n textJustify: TextJustify,\n spacing: number,\n translate: [number, number],\n writingMode: 1 | 2,\n allowVerticalPlacement: boolean,\n symbolPlacement: string,\n layoutTextSize: number,\n layoutTextSizeThisZoom: number): Shaping | false {\n const logicalInput = TaggedString.fromFeature(text, defaultFontStack);\n\n if (writingMode === WritingMode.vertical) {\n logicalInput.verticalizePunctuation();\n }\n\n let lines: Array;\n\n const {processBidirectionalText, processStyledBidirectionalText} = rtlTextPlugin;\n if (processBidirectionalText && logicalInput.sections.length === 1) {\n // Bidi doesn't have to be style-aware\n lines = [];\n const untaggedLines =\n processBidirectionalText(logicalInput.toString(),\n determineLineBreaks(logicalInput, spacing, maxWidth, glyphMap, imagePositions, symbolPlacement, layoutTextSize));\n for (const line of untaggedLines) {\n const taggedLine = new TaggedString();\n taggedLine.text = line;\n taggedLine.sections = logicalInput.sections;\n for (let i = 0; i < line.length; i++) {\n taggedLine.sectionIndex.push(0);\n }\n lines.push(taggedLine);\n }\n } else if (processStyledBidirectionalText) {\n // Need version of mapbox-gl-rtl-text with style support for combining RTL text\n // with formatting\n lines = [];\n const processedLines =\n processStyledBidirectionalText(logicalInput.text,\n logicalInput.sectionIndex,\n determineLineBreaks(logicalInput, spacing, maxWidth, glyphMap, imagePositions, symbolPlacement, layoutTextSize));\n for (const line of processedLines) {\n const taggedLine = new TaggedString();\n taggedLine.text = line[0];\n taggedLine.sectionIndex = line[1];\n taggedLine.sections = logicalInput.sections;\n lines.push(taggedLine);\n }\n } else {\n lines = breakLines(logicalInput, determineLineBreaks(logicalInput, spacing, maxWidth, glyphMap, imagePositions, symbolPlacement, layoutTextSize));\n }\n\n const positionedLines = [];\n const shaping = {\n positionedLines,\n text: logicalInput.toString(),\n top: translate[1],\n bottom: translate[1],\n left: translate[0],\n right: translate[0],\n writingMode,\n iconsInText: false,\n verticalizable: false\n };\n\n shapeLines(shaping, glyphMap, glyphPositions, imagePositions, lines, lineHeight, textAnchor, textJustify, writingMode, spacing, allowVerticalPlacement, layoutTextSizeThisZoom);\n if (isEmpty(positionedLines)) return false;\n\n return shaping;\n}\n\n// using computed properties due to https://github.com/facebook/flow/issues/380\n/* eslint no-useless-computed-key: 0 */\n\nconst whitespace: {[_: number]: boolean} = {\n [0x09]: true, // tab\n [0x0a]: true, // newline\n [0x0b]: true, // vertical tab\n [0x0c]: true, // form feed\n [0x0d]: true, // carriage return\n [0x20]: true, // space\n};\n\nconst breakable: {[_: number]: boolean} = {\n [0x0a]: true, // newline\n [0x20]: true, // space\n [0x26]: true, // ampersand\n [0x28]: true, // left parenthesis\n [0x29]: true, // right parenthesis\n [0x2b]: true, // plus sign\n [0x2d]: true, // hyphen-minus\n [0x2f]: true, // solidus\n [0xad]: true, // soft hyphen\n [0xb7]: true, // middle dot\n [0x200b]: true, // zero-width space\n [0x2010]: true, // hyphen\n [0x2013]: true, // en dash\n [0x2027]: true // interpunct\n // Many other characters may be reasonable breakpoints\n // Consider \"neutral orientation\" characters at scriptDetection.charHasNeutralVerticalOrientation\n // See https://github.com/mapbox/mapbox-gl-js/issues/3658\n};\n\nfunction getGlyphAdvance(codePoint: number,\n section: SectionOptions,\n glyphMap: {[_: string]: {[_: number]: ?StyleGlyph}},\n imagePositions: {[_: string]: ImagePosition},\n spacing: number,\n layoutTextSize: number): number {\n if (!section.imageName) {\n const positions = glyphMap[section.fontStack];\n const glyph = positions && positions[codePoint];\n if (!glyph) return 0;\n return glyph.metrics.advance * section.scale + spacing;\n } else {\n const imagePosition = imagePositions[section.imageName];\n if (!imagePosition) return 0;\n return imagePosition.displaySize[0] * section.scale * ONE_EM / layoutTextSize + spacing;\n }\n}\n\nfunction determineAverageLineWidth(logicalInput: TaggedString,\n spacing: number,\n maxWidth: number,\n glyphMap: {[_: string]: {[_: number]: ?StyleGlyph}},\n imagePositions: {[_: string]: ImagePosition},\n layoutTextSize: number) {\n let totalWidth = 0;\n\n for (let index = 0; index < logicalInput.length(); index++) {\n const section = logicalInput.getSection(index);\n totalWidth += getGlyphAdvance(logicalInput.getCharCode(index), section, glyphMap, imagePositions, spacing, layoutTextSize);\n }\n\n const lineCount = Math.max(1, Math.ceil(totalWidth / maxWidth));\n return totalWidth / lineCount;\n}\n\nfunction calculateBadness(lineWidth: number,\n targetWidth: number,\n penalty: number,\n isLastBreak: boolean) {\n const raggedness = Math.pow(lineWidth - targetWidth, 2);\n if (isLastBreak) {\n // Favor finals lines shorter than average over longer than average\n if (lineWidth < targetWidth) {\n return raggedness / 2;\n } else {\n return raggedness * 2;\n }\n }\n\n return raggedness + Math.abs(penalty) * penalty;\n}\n\nfunction calculatePenalty(codePoint: number, nextCodePoint: number, penalizableIdeographicBreak: boolean) {\n let penalty = 0;\n // Force break on newline\n if (codePoint === 0x0a) {\n penalty -= 10000;\n }\n // Penalize breaks between characters that allow ideographic breaking because\n // they are less preferable than breaks at spaces (or zero width spaces).\n if (penalizableIdeographicBreak) {\n penalty += 150;\n }\n\n // Penalize open parenthesis at end of line\n if (codePoint === 0x28 || codePoint === 0xff08) {\n penalty += 50;\n }\n\n // Penalize close parenthesis at beginning of line\n if (nextCodePoint === 0x29 || nextCodePoint === 0xff09) {\n penalty += 50;\n }\n return penalty;\n}\n\ntype Break = {\n index: number,\n x: number,\n priorBreak: ?Break,\n badness: number\n};\n\nfunction evaluateBreak(breakIndex: number,\n breakX: number,\n targetWidth: number,\n potentialBreaks: Array,\n penalty: number,\n isLastBreak: boolean): Break {\n // We could skip evaluating breaks where the line length (breakX - priorBreak.x) > maxWidth\n // ...but in fact we allow lines longer than maxWidth (if there's no break points)\n // ...and when targetWidth and maxWidth are close, strictly enforcing maxWidth can give\n // more lopsided results.\n\n let bestPriorBreak: ?Break = null;\n let bestBreakBadness = calculateBadness(breakX, targetWidth, penalty, isLastBreak);\n\n for (const potentialBreak of potentialBreaks) {\n const lineWidth = breakX - potentialBreak.x;\n const breakBadness =\n calculateBadness(lineWidth, targetWidth, penalty, isLastBreak) + potentialBreak.badness;\n if (breakBadness <= bestBreakBadness) {\n bestPriorBreak = potentialBreak;\n bestBreakBadness = breakBadness;\n }\n }\n\n return {\n index: breakIndex,\n x: breakX,\n priorBreak: bestPriorBreak,\n badness: bestBreakBadness\n };\n}\n\nfunction leastBadBreaks(lastLineBreak: ?Break): Array {\n if (!lastLineBreak) {\n return [];\n }\n return leastBadBreaks(lastLineBreak.priorBreak).concat(lastLineBreak.index);\n}\n\nfunction determineLineBreaks(logicalInput: TaggedString,\n spacing: number,\n maxWidth: number,\n glyphMap: {[_: string]: {[_: number]: ?StyleGlyph}},\n imagePositions: {[_: string]: ImagePosition},\n symbolPlacement: string,\n layoutTextSize: number): Array {\n if (symbolPlacement !== 'point')\n return [];\n\n if (!logicalInput)\n return [];\n\n const potentialLineBreaks = [];\n const targetWidth = determineAverageLineWidth(logicalInput, spacing, maxWidth, glyphMap, imagePositions, layoutTextSize);\n\n const hasServerSuggestedBreakpoints = logicalInput.text.indexOf(\"\\u200b\") >= 0;\n\n let currentX = 0;\n\n for (let i = 0; i < logicalInput.length(); i++) {\n const section = logicalInput.getSection(i);\n const codePoint = logicalInput.getCharCode(i);\n if (!whitespace[codePoint]) currentX += getGlyphAdvance(codePoint, section, glyphMap, imagePositions, spacing, layoutTextSize);\n\n // Ideographic characters, spaces, and word-breaking punctuation that often appear without\n // surrounding spaces.\n if ((i < logicalInput.length() - 1)) {\n const ideographicBreak = charAllowsIdeographicBreaking(codePoint);\n if (breakable[codePoint] || ideographicBreak || section.imageName) {\n\n potentialLineBreaks.push(\n evaluateBreak(\n i + 1,\n currentX,\n targetWidth,\n potentialLineBreaks,\n calculatePenalty(codePoint, logicalInput.getCharCode(i + 1), ideographicBreak && hasServerSuggestedBreakpoints),\n false));\n }\n }\n }\n\n return leastBadBreaks(\n evaluateBreak(\n logicalInput.length(),\n currentX,\n targetWidth,\n potentialLineBreaks,\n 0,\n true));\n}\n\nfunction getAnchorAlignment(anchor: SymbolAnchor) {\n let horizontalAlign = 0.5, verticalAlign = 0.5;\n\n switch (anchor) {\n case 'right':\n case 'top-right':\n case 'bottom-right':\n horizontalAlign = 1;\n break;\n case 'left':\n case 'top-left':\n case 'bottom-left':\n horizontalAlign = 0;\n break;\n }\n\n switch (anchor) {\n case 'bottom':\n case 'bottom-right':\n case 'bottom-left':\n verticalAlign = 1;\n break;\n case 'top':\n case 'top-right':\n case 'top-left':\n verticalAlign = 0;\n break;\n }\n\n return {horizontalAlign, verticalAlign};\n}\n\nfunction shapeLines(shaping: Shaping,\n glyphMap: {[_: string]: {[_: number]: ?StyleGlyph}},\n glyphPositions: {[_: string]: {[_: number]: GlyphPosition}},\n imagePositions: {[_: string]: ImagePosition},\n lines: Array,\n lineHeight: number,\n textAnchor: SymbolAnchor,\n textJustify: TextJustify,\n writingMode: 1 | 2,\n spacing: number,\n allowVerticalPlacement: boolean,\n layoutTextSizeThisZoom: number) {\n\n let x = 0;\n let y = SHAPING_DEFAULT_OFFSET;\n\n let maxLineLength = 0;\n let maxLineHeight = 0;\n\n const justify =\n textJustify === 'right' ? 1 :\n textJustify === 'left' ? 0 : 0.5;\n\n let lineIndex = 0;\n for (const line of lines) {\n line.trim();\n\n const lineMaxScale = line.getMaxScale();\n const maxLineOffset = (lineMaxScale - 1) * ONE_EM;\n const positionedLine = {positionedGlyphs: [], lineOffset: 0};\n shaping.positionedLines[lineIndex] = positionedLine;\n const positionedGlyphs = positionedLine.positionedGlyphs;\n let lineOffset = 0.0;\n\n if (!line.length()) {\n y += lineHeight; // Still need a line feed after empty line\n ++lineIndex;\n continue;\n }\n\n for (let i = 0; i < line.length(); i++) {\n const section = line.getSection(i);\n const sectionIndex = line.getSectionIndex(i);\n const codePoint = line.getCharCode(i);\n let baselineOffset = 0.0;\n let metrics = null;\n let rect = null;\n let imageName = null;\n let verticalAdvance = ONE_EM;\n const vertical = !(writingMode === WritingMode.horizontal ||\n // Don't verticalize glyphs that have no upright orientation if vertical placement is disabled.\n (!allowVerticalPlacement && !charHasUprightVerticalOrientation(codePoint)) ||\n // If vertical placement is enabled, don't verticalize glyphs that\n // are from complex text layout script, or whitespaces.\n (allowVerticalPlacement && (whitespace[codePoint] || charInComplexShapingScript(codePoint))));\n\n if (!section.imageName) {\n const positions = glyphPositions[section.fontStack];\n const glyphPosition = positions && positions[codePoint];\n if (glyphPosition && glyphPosition.rect) {\n rect = glyphPosition.rect;\n metrics = glyphPosition.metrics;\n } else {\n const glyphs = glyphMap[section.fontStack];\n const glyph = glyphs && glyphs[codePoint];\n if (!glyph) continue;\n metrics = glyph.metrics;\n }\n\n // We don't know the baseline, but since we're laying out\n // at 24 points, we can calculate how much it will move when\n // we scale up or down.\n baselineOffset = (lineMaxScale - section.scale) * ONE_EM;\n } else {\n const imagePosition = imagePositions[section.imageName];\n if (!imagePosition) continue;\n imageName = section.imageName;\n shaping.iconsInText = shaping.iconsInText || true;\n rect = imagePosition.paddedRect;\n const size = imagePosition.displaySize;\n // If needed, allow to set scale factor for an image using\n // alias \"image-scale\" that could be alias for \"font-scale\"\n // when FormattedSection is an image section.\n section.scale = section.scale * ONE_EM / layoutTextSizeThisZoom;\n\n metrics = {width: size[0],\n height: size[1],\n left: IMAGE_PADDING,\n top: -GLYPH_PBF_BORDER,\n advance: vertical ? size[1] : size[0]};\n\n // Difference between one EM and an image size.\n // Aligns bottom of an image to a baseline level.\n const imageOffset = ONE_EM - size[1] * section.scale;\n baselineOffset = maxLineOffset + imageOffset;\n verticalAdvance = metrics.advance;\n\n // Difference between height of an image and one EM at max line scale.\n // Pushes current line down if an image size is over 1 EM at max line scale.\n const offset = vertical ? size[0] * section.scale - ONE_EM * lineMaxScale :\n size[1] * section.scale - ONE_EM * lineMaxScale;\n if (offset > 0 && offset > lineOffset) {\n lineOffset = offset;\n }\n }\n\n if (!vertical) {\n positionedGlyphs.push({glyph: codePoint, imageName, x, y: y + baselineOffset, vertical, scale: section.scale, fontStack: section.fontStack, sectionIndex, metrics, rect});\n x += metrics.advance * section.scale + spacing;\n } else {\n shaping.verticalizable = true;\n positionedGlyphs.push({glyph: codePoint, imageName, x, y: y + baselineOffset, vertical, scale: section.scale, fontStack: section.fontStack, sectionIndex, metrics, rect});\n x += verticalAdvance * section.scale + spacing;\n }\n }\n\n // Only justify if we placed at least one glyph\n if (positionedGlyphs.length !== 0) {\n const lineLength = x - spacing;\n maxLineLength = Math.max(lineLength, maxLineLength);\n justifyLine(positionedGlyphs, 0, positionedGlyphs.length - 1, justify, lineOffset);\n }\n\n x = 0;\n const currentLineHeight = lineHeight * lineMaxScale + lineOffset;\n positionedLine.lineOffset = Math.max(lineOffset, maxLineOffset);\n y += currentLineHeight;\n maxLineHeight = Math.max(currentLineHeight, maxLineHeight);\n ++lineIndex;\n }\n\n // Calculate the bounding box and justify / align text block.\n const height = y - SHAPING_DEFAULT_OFFSET;\n const {horizontalAlign, verticalAlign} = getAnchorAlignment(textAnchor);\n align(shaping.positionedLines, justify, horizontalAlign, verticalAlign, maxLineLength, maxLineHeight, lineHeight, height, lines.length);\n\n shaping.top += -verticalAlign * height;\n shaping.bottom = shaping.top + height;\n shaping.left += -horizontalAlign * maxLineLength;\n shaping.right = shaping.left + maxLineLength;\n}\n\n// justify right = 1, left = 0, center = 0.5\nfunction justifyLine(positionedGlyphs: Array,\n start: number,\n end: number,\n justify: 1 | 0 | 0.5,\n lineOffset: number) {\n if (!justify && !lineOffset)\n return;\n\n const lastPositionedGlyph = positionedGlyphs[end];\n const lastAdvance = lastPositionedGlyph.metrics.advance * lastPositionedGlyph.scale;\n const lineIndent = (positionedGlyphs[end].x + lastAdvance) * justify;\n\n for (let j = start; j <= end; j++) {\n positionedGlyphs[j].x -= lineIndent;\n positionedGlyphs[j].y += lineOffset;\n }\n}\n\nfunction align(positionedLines: Array,\n justify: number,\n horizontalAlign: number,\n verticalAlign: number,\n maxLineLength: number,\n maxLineHeight: number,\n lineHeight: number,\n blockHeight: number,\n lineCount: number) {\n const shiftX = (justify - horizontalAlign) * maxLineLength;\n let shiftY = 0;\n\n if (maxLineHeight !== lineHeight) {\n shiftY = -blockHeight * verticalAlign - SHAPING_DEFAULT_OFFSET;\n } else {\n shiftY = (-verticalAlign * lineCount + 0.5) * lineHeight;\n }\n\n for (const line of positionedLines) {\n for (const positionedGlyph of line.positionedGlyphs) {\n positionedGlyph.x += shiftX;\n positionedGlyph.y += shiftY;\n }\n }\n}\n\nexport type PositionedIcon = {\n image: ImagePosition,\n top: number,\n bottom: number,\n left: number,\n right: number,\n collisionPadding?: [number, number, number, number]\n};\n\nfunction shapeIcon(image: ImagePosition, iconOffset: [number, number], iconAnchor: SymbolAnchor): PositionedIcon {\n const {horizontalAlign, verticalAlign} = getAnchorAlignment(iconAnchor);\n const dx = iconOffset[0];\n const dy = iconOffset[1];\n const x1 = dx - image.displaySize[0] * horizontalAlign;\n const x2 = x1 + image.displaySize[0];\n const y1 = dy - image.displaySize[1] * verticalAlign;\n const y2 = y1 + image.displaySize[1];\n return {image, top: y1, bottom: y2, left: x1, right: x2};\n}\n\nfunction fitIconToText(shapedIcon: PositionedIcon, shapedText: Shaping,\n textFit: string,\n padding: [ number, number, number, number ],\n iconOffset: [ number, number ], fontScale: number): PositionedIcon {\n assert(textFit !== 'none');\n assert(Array.isArray(padding) && padding.length === 4);\n assert(Array.isArray(iconOffset) && iconOffset.length === 2);\n\n const image = shapedIcon.image;\n\n let collisionPadding;\n if (image.content) {\n const content = image.content;\n const pixelRatio = image.pixelRatio || 1;\n collisionPadding = [\n content[0] / pixelRatio,\n content[1] / pixelRatio,\n image.displaySize[0] - content[2] / pixelRatio,\n image.displaySize[1] - content[3] / pixelRatio\n ];\n }\n\n // We don't respect the icon-anchor, because icon-text-fit is set. Instead,\n // the icon will be centered on the text, then stretched in the given\n // dimensions.\n\n const textLeft = shapedText.left * fontScale;\n const textRight = shapedText.right * fontScale;\n\n let top, right, bottom, left;\n if (textFit === 'width' || textFit === 'both') {\n // Stretched horizontally to the text width\n left = iconOffset[0] + textLeft - padding[3];\n right = iconOffset[0] + textRight + padding[1];\n } else {\n // Centered on the text\n left = iconOffset[0] + (textLeft + textRight - image.displaySize[0]) / 2;\n right = left + image.displaySize[0];\n }\n\n const textTop = shapedText.top * fontScale;\n const textBottom = shapedText.bottom * fontScale;\n if (textFit === 'height' || textFit === 'both') {\n // Stretched vertically to the text height\n top = iconOffset[1] + textTop - padding[0];\n bottom = iconOffset[1] + textBottom + padding[2];\n } else {\n // Centered on the text\n top = iconOffset[1] + (textTop + textBottom - image.displaySize[1]) / 2;\n bottom = top + image.displaySize[1];\n }\n\n return {image, top, right, bottom, left, collisionPadding};\n}\n", "// @flow\n\nimport Point from '@mapbox/point-geometry';\n\nimport {register} from '../util/web_worker_transfer';\n\nclass Anchor extends Point {\n angle: any;\n segment: number | void;\n\n constructor(x: number, y: number, angle: number, segment?: number) {\n super(x, y);\n this.angle = angle;\n if (segment !== undefined) {\n this.segment = segment;\n }\n }\n\n clone() {\n return new Anchor(this.x, this.y, this.angle, this.segment);\n }\n}\n\nregister('Anchor', Anchor);\n\nexport default Anchor;\n", "// @flow\n\nimport {number as interpolate} from '../style-spec/util/interpolate';\nimport Interpolate from '../style-spec/expression/definitions/interpolate';\nimport {clamp} from '../util/util';\nimport EvaluationParameters from '../style/evaluation_parameters';\n\nimport type {PropertyValue, PossiblyEvaluatedPropertyValue} from '../style/properties';\nimport type {InterpolationType} from '../style-spec/expression/definitions/interpolate';\n\nconst SIZE_PACK_FACTOR = 128;\n\nexport {getSizeData, evaluateSizeForFeature, evaluateSizeForZoom, SIZE_PACK_FACTOR};\n\nexport type SizeData = {\n kind: 'constant',\n layoutSize: number\n} | {\n kind: 'source'\n} | {\n kind: 'camera',\n minZoom: number,\n maxZoom: number,\n minSize: number,\n maxSize: number,\n interpolationType: ?InterpolationType\n} | {\n kind: 'composite',\n minZoom: number,\n maxZoom: number,\n interpolationType: ?InterpolationType\n};\n\n// For {text,icon}-size, get the bucket-level data that will be needed by\n// the painter to set symbol-size-related uniforms\nfunction getSizeData(tileZoom: number, value: PropertyValue>): SizeData {\n const {expression} = value;\n\n if (expression.kind === 'constant') {\n const layoutSize = expression.evaluate(new EvaluationParameters(tileZoom + 1));\n return {kind: 'constant', layoutSize};\n\n } else if (expression.kind === 'source') {\n return {kind: 'source'};\n\n } else {\n const {zoomStops, interpolationType} = expression;\n\n // calculate covering zoom stops for zoom-dependent values\n let lower = 0;\n while (lower < zoomStops.length && zoomStops[lower] <= tileZoom) lower++;\n lower = Math.max(0, lower - 1);\n let upper = lower;\n while (upper < zoomStops.length && zoomStops[upper] < tileZoom + 1) upper++;\n upper = Math.min(zoomStops.length - 1, upper);\n\n const minZoom = zoomStops[lower];\n const maxZoom = zoomStops[upper];\n\n // We'd like to be able to use CameraExpression or CompositeExpression in these\n // return types rather than ExpressionSpecification, but the former are not\n // transferrable across Web Worker boundaries.\n if (expression.kind === 'composite') {\n return {kind: 'composite', minZoom, maxZoom, interpolationType};\n }\n\n // for camera functions, also save off the function values\n // evaluated at the covering zoom levels\n const minSize = expression.evaluate(new EvaluationParameters(minZoom));\n const maxSize = expression.evaluate(new EvaluationParameters(maxZoom));\n\n return {kind: 'camera', minZoom, maxZoom, minSize, maxSize, interpolationType};\n }\n}\n\nfunction evaluateSizeForFeature(sizeData: SizeData,\n {uSize, uSizeT}: { uSize: number, uSizeT: number },\n {lowerSize, upperSize}: { lowerSize: number, upperSize: number}) {\n if (sizeData.kind === 'source') {\n return lowerSize / SIZE_PACK_FACTOR;\n } else if (sizeData.kind === 'composite') {\n return interpolate(lowerSize / SIZE_PACK_FACTOR, upperSize / SIZE_PACK_FACTOR, uSizeT);\n }\n return uSize;\n}\n\nfunction evaluateSizeForZoom(sizeData: SizeData, zoom: number) {\n let uSizeT = 0;\n let uSize = 0;\n\n if (sizeData.kind === 'constant') {\n uSize = sizeData.layoutSize;\n\n } else if (sizeData.kind !== 'source') {\n const {interpolationType, minZoom, maxZoom} = sizeData;\n\n // Even though we could get the exact value of the camera function\n // at z = tr.zoom, we intentionally do not: instead, we interpolate\n // between the camera function values at a pair of zoom stops covering\n // [tileZoom, tileZoom + 1] in order to be consistent with this\n // restriction on composite functions\n const t = !interpolationType ? 0 : clamp(\n Interpolate.interpolationFactor(interpolationType, zoom, minZoom, maxZoom), 0, 1);\n\n if (sizeData.kind === 'camera') {\n uSize = interpolate(sizeData.minSize, sizeData.maxSize, t);\n } else {\n uSizeT = t;\n }\n }\n\n return {uSizeT, uSize};\n}\n", "// @flow\n\nexport default checkMaxAngle;\n\nimport type Point from '@mapbox/point-geometry';\nimport type Anchor from './anchor';\n\n/**\n * Labels placed around really sharp angles aren't readable. Check if any\n * part of the potential label has a combined angle that is too big.\n *\n * @param line\n * @param anchor The point on the line around which the label is anchored.\n * @param labelLength The length of the label in geometry units.\n * @param windowSize The check fails if the combined angles within a part of the line that is `windowSize` long is too big.\n * @param maxAngle The maximum combined angle that any window along the label is allowed to have.\n *\n * @returns {boolean} whether the label should be placed\n * @private\n */\nfunction checkMaxAngle(line: Array, anchor: Anchor, labelLength: number, windowSize: number, maxAngle: number) {\n\n // horizontal labels always pass\n if (anchor.segment === undefined) return true;\n\n let p = anchor;\n let index = anchor.segment + 1;\n let anchorDistance = 0;\n\n // move backwards along the line to the first segment the label appears on\n while (anchorDistance > -labelLength / 2) {\n index--;\n\n // there isn't enough room for the label after the beginning of the line\n if (index < 0) return false;\n\n anchorDistance -= line[index].dist(p);\n p = line[index];\n }\n\n anchorDistance += line[index].dist(line[index + 1]);\n index++;\n\n // store recent corners and their total angle difference\n const recentCorners = [];\n let recentAngleDelta = 0;\n\n // move forwards by the length of the label and check angles along the way\n while (anchorDistance < labelLength / 2) {\n const prev = line[index - 1];\n const current = line[index];\n const next = line[index + 1];\n\n // there isn't enough room for the label before the end of the line\n if (!next) return false;\n\n let angleDelta = prev.angleTo(current) - current.angleTo(next);\n // restrict angle to -pi..pi range\n angleDelta = Math.abs(((angleDelta + 3 * Math.PI) % (Math.PI * 2)) - Math.PI);\n\n recentCorners.push({\n distance: anchorDistance,\n angleDelta\n });\n recentAngleDelta += angleDelta;\n\n // remove corners that are far enough away from the list of recent anchors\n while (anchorDistance - recentCorners[0].distance > windowSize) {\n recentAngleDelta -= recentCorners.shift().angleDelta;\n }\n\n // the sum of angles within the window area exceeds the maximum allowed value. check fails.\n if (recentAngleDelta > maxAngle) return false;\n\n index++;\n anchorDistance += current.dist(next);\n }\n\n // no part of the line had an angle greater than the maximum allowed. check passes.\n return true;\n}\n", "// @flow\n\nimport {number as interpolate} from '../style-spec/util/interpolate';\n\nimport Anchor from '../symbol/anchor';\nimport checkMaxAngle from './check_max_angle';\n\nimport type Point from '@mapbox/point-geometry';\nimport type {Shaping, PositionedIcon} from './shaping';\n\nexport {getAnchors, getCenterAnchor};\n\nfunction getLineLength(line: Array): number {\n let lineLength = 0;\n for (let k = 0; k < line.length - 1; k++) {\n lineLength += line[k].dist(line[k + 1]);\n }\n return lineLength;\n}\n\nfunction getAngleWindowSize(shapedText: ?Shaping,\n glyphSize: number,\n boxScale: number): number {\n return shapedText ?\n 3 / 5 * glyphSize * boxScale :\n 0;\n}\n\nfunction getShapedLabelLength(shapedText: ?Shaping, shapedIcon: ?PositionedIcon): number {\n return Math.max(\n shapedText ? shapedText.right - shapedText.left : 0,\n shapedIcon ? shapedIcon.right - shapedIcon.left : 0);\n}\n\nfunction getCenterAnchor(line: Array,\n maxAngle: number,\n shapedText: ?Shaping,\n shapedIcon: ?PositionedIcon,\n glyphSize: number,\n boxScale: number) {\n const angleWindowSize = getAngleWindowSize(shapedText, glyphSize, boxScale);\n const labelLength = getShapedLabelLength(shapedText, shapedIcon) * boxScale;\n\n let prevDistance = 0;\n const centerDistance = getLineLength(line) / 2;\n\n for (let i = 0; i < line.length - 1; i++) {\n\n const a = line[i],\n b = line[i + 1];\n\n const segmentDistance = a.dist(b);\n\n if (prevDistance + segmentDistance > centerDistance) {\n // The center is on this segment\n const t = (centerDistance - prevDistance) / segmentDistance,\n x = interpolate(a.x, b.x, t),\n y = interpolate(a.y, b.y, t);\n\n const anchor = new Anchor(x, y, b.angleTo(a), i);\n anchor._round();\n if (!angleWindowSize || checkMaxAngle(line, anchor, labelLength, angleWindowSize, maxAngle)) {\n return anchor;\n } else {\n return;\n }\n }\n\n prevDistance += segmentDistance;\n }\n}\n\nfunction getAnchors(line: Array,\n spacing: number,\n maxAngle: number,\n shapedText: ?Shaping,\n shapedIcon: ?PositionedIcon,\n glyphSize: number,\n boxScale: number,\n overscaling: number,\n tileExtent: number) {\n\n // Resample a line to get anchor points for labels and check that each\n // potential label passes text-max-angle check and has enough froom to fit\n // on the line.\n\n const angleWindowSize = getAngleWindowSize(shapedText, glyphSize, boxScale);\n const shapedLabelLength = getShapedLabelLength(shapedText, shapedIcon);\n const labelLength = shapedLabelLength * boxScale;\n\n // Is the line continued from outside the tile boundary?\n const isLineContinued = line[0].x === 0 || line[0].x === tileExtent || line[0].y === 0 || line[0].y === tileExtent;\n\n // Is the label long, relative to the spacing?\n // If so, adjust the spacing so there is always a minimum space of `spacing / 4` between label edges.\n if (spacing - labelLength < spacing / 4) {\n spacing = labelLength + spacing / 4;\n }\n\n // Offset the first anchor by:\n // Either half the label length plus a fixed extra offset if the line is not continued\n // Or half the spacing if the line is continued.\n\n // For non-continued lines, add a bit of fixed extra offset to avoid collisions at T intersections.\n const fixedExtraOffset = glyphSize * 2;\n\n const offset = !isLineContinued ?\n ((shapedLabelLength / 2 + fixedExtraOffset) * boxScale * overscaling) % spacing :\n (spacing / 2 * overscaling) % spacing;\n\n return resample(line, offset, spacing, angleWindowSize, maxAngle, labelLength, isLineContinued, false, tileExtent);\n}\n\nfunction resample(line, offset, spacing, angleWindowSize, maxAngle, labelLength, isLineContinued, placeAtMiddle, tileExtent) {\n\n const halfLabelLength = labelLength / 2;\n const lineLength = getLineLength(line);\n\n let distance = 0,\n markedDistance = offset - spacing;\n\n let anchors = [];\n\n for (let i = 0; i < line.length - 1; i++) {\n\n const a = line[i],\n b = line[i + 1];\n\n const segmentDist = a.dist(b),\n angle = b.angleTo(a);\n\n while (markedDistance + spacing < distance + segmentDist) {\n markedDistance += spacing;\n\n const t = (markedDistance - distance) / segmentDist,\n x = interpolate(a.x, b.x, t),\n y = interpolate(a.y, b.y, t);\n\n // Check that the point is within the tile boundaries and that\n // the label would fit before the beginning and end of the line\n // if placed at this point.\n if (x >= 0 && x < tileExtent && y >= 0 && y < tileExtent &&\n markedDistance - halfLabelLength >= 0 &&\n markedDistance + halfLabelLength <= lineLength) {\n const anchor = new Anchor(x, y, angle, i);\n anchor._round();\n\n if (!angleWindowSize || checkMaxAngle(line, anchor, labelLength, angleWindowSize, maxAngle)) {\n anchors.push(anchor);\n }\n }\n }\n\n distance += segmentDist;\n }\n\n if (!placeAtMiddle && !anchors.length && !isLineContinued) {\n // The first attempt at finding anchors at which labels can be placed failed.\n // Try again, but this time just try placing one anchor at the middle of the line.\n // This has the most effect for short lines in overscaled tiles, since the\n // initial offset used in overscaled tiles is calculated to align labels with positions in\n // parent tiles instead of placing the label as close to the beginning as possible.\n anchors = resample(line, distance / 2, spacing, angleWindowSize, maxAngle, labelLength, isLineContinued, true, tileExtent);\n }\n\n return anchors;\n}\n", "// @flow\n\nimport Point from '@mapbox/point-geometry';\n\nexport default clipLine;\n\n/**\n * Returns the part of a multiline that intersects with the provided rectangular box.\n *\n * @param lines\n * @param x1 the left edge of the box\n * @param y1 the top edge of the box\n * @param x2 the right edge of the box\n * @param y2 the bottom edge of the box\n * @returns lines\n * @private\n */\nfunction clipLine(lines: Array>, x1: number, y1: number, x2: number, y2: number): Array> {\n const clippedLines = [];\n\n for (let l = 0; l < lines.length; l++) {\n const line = lines[l];\n let clippedLine;\n\n for (let i = 0; i < line.length - 1; i++) {\n let p0 = line[i];\n let p1 = line[i + 1];\n\n if (p0.x < x1 && p1.x < x1) {\n continue;\n } else if (p0.x < x1) {\n p0 = new Point(x1, p0.y + (p1.y - p0.y) * ((x1 - p0.x) / (p1.x - p0.x)))._round();\n } else if (p1.x < x1) {\n p1 = new Point(x1, p0.y + (p1.y - p0.y) * ((x1 - p0.x) / (p1.x - p0.x)))._round();\n }\n\n if (p0.y < y1 && p1.y < y1) {\n continue;\n } else if (p0.y < y1) {\n p0 = new Point(p0.x + (p1.x - p0.x) * ((y1 - p0.y) / (p1.y - p0.y)), y1)._round();\n } else if (p1.y < y1) {\n p1 = new Point(p0.x + (p1.x - p0.x) * ((y1 - p0.y) / (p1.y - p0.y)), y1)._round();\n }\n\n if (p0.x >= x2 && p1.x >= x2) {\n continue;\n } else if (p0.x >= x2) {\n p0 = new Point(x2, p0.y + (p1.y - p0.y) * ((x2 - p0.x) / (p1.x - p0.x)))._round();\n } else if (p1.x >= x2) {\n p1 = new Point(x2, p0.y + (p1.y - p0.y) * ((x2 - p0.x) / (p1.x - p0.x)))._round();\n }\n\n if (p0.y >= y2 && p1.y >= y2) {\n continue;\n } else if (p0.y >= y2) {\n p0 = new Point(p0.x + (p1.x - p0.x) * ((y2 - p0.y) / (p1.y - p0.y)), y2)._round();\n } else if (p1.y >= y2) {\n p1 = new Point(p0.x + (p1.x - p0.x) * ((y2 - p0.y) / (p1.y - p0.y)), y2)._round();\n }\n\n if (!clippedLine || !p0.equals(clippedLine[clippedLine.length - 1])) {\n clippedLine = [p0];\n clippedLines.push(clippedLine);\n }\n\n clippedLine.push(p1);\n }\n }\n\n return clippedLines;\n}\n", "// @flow\n\nimport Point from '@mapbox/point-geometry';\n\nimport {GLYPH_PBF_BORDER} from '../style/parse_glyph_pbf';\n\nimport type Anchor from './anchor';\nimport type {PositionedIcon, Shaping} from './shaping';\nimport {SHAPING_DEFAULT_OFFSET} from './shaping';\nimport {IMAGE_PADDING} from '../render/image_atlas';\nimport type SymbolStyleLayer from '../style/style_layer/symbol_style_layer';\nimport type {Feature} from '../style-spec/expression';\nimport type {StyleImage} from '../style/style_image';\nimport ONE_EM from './one_em';\n\n/**\n * A textured quad for rendering a single icon or glyph.\n *\n * The zoom range the glyph can be shown is defined by minScale and maxScale.\n *\n * @param tl The offset of the top left corner from the anchor.\n * @param tr The offset of the top right corner from the anchor.\n * @param bl The offset of the bottom left corner from the anchor.\n * @param br The offset of the bottom right corner from the anchor.\n * @param tex The texture coordinates.\n *\n * @private\n */\nexport type SymbolQuad = {\n tl: Point,\n tr: Point,\n bl: Point,\n br: Point,\n tex: {\n x: number,\n y: number,\n w: number,\n h: number\n },\n pixelOffsetTL: Point,\n pixelOffsetBR: Point,\n writingMode: any | void,\n glyphOffset: [number, number],\n sectionIndex: number,\n isSDF: boolean,\n minFontScaleX: number,\n minFontScaleY: number\n};\n\n// If you have a 10px icon that isn't perfectly aligned to the pixel grid it will cover 11 actual\n// pixels. The quad needs to be padded to account for this, otherwise they'll look slightly clipped\n// on one edge in some cases.\nconst border = IMAGE_PADDING;\n\n/**\n * Create the quads used for rendering an icon.\n * @private\n */\nexport function getIconQuads(\n shapedIcon: PositionedIcon,\n iconRotate: number,\n isSDFIcon: boolean,\n hasIconTextFit: boolean): Array {\n const quads = [];\n\n const image = shapedIcon.image;\n const pixelRatio = image.pixelRatio;\n const imageWidth = image.paddedRect.w - 2 * border;\n const imageHeight = image.paddedRect.h - 2 * border;\n\n const iconWidth = shapedIcon.right - shapedIcon.left;\n const iconHeight = shapedIcon.bottom - shapedIcon.top;\n\n const stretchX = image.stretchX || [[0, imageWidth]];\n const stretchY = image.stretchY || [[0, imageHeight]];\n\n const reduceRanges = (sum, range) => sum + range[1] - range[0];\n const stretchWidth = stretchX.reduce(reduceRanges, 0);\n const stretchHeight = stretchY.reduce(reduceRanges, 0);\n const fixedWidth = imageWidth - stretchWidth;\n const fixedHeight = imageHeight - stretchHeight;\n\n let stretchOffsetX = 0;\n let stretchContentWidth = stretchWidth;\n let stretchOffsetY = 0;\n let stretchContentHeight = stretchHeight;\n let fixedOffsetX = 0;\n let fixedContentWidth = fixedWidth;\n let fixedOffsetY = 0;\n let fixedContentHeight = fixedHeight;\n\n if (image.content && hasIconTextFit) {\n const content = image.content;\n stretchOffsetX = sumWithinRange(stretchX, 0, content[0]);\n stretchOffsetY = sumWithinRange(stretchY, 0, content[1]);\n stretchContentWidth = sumWithinRange(stretchX, content[0], content[2]);\n stretchContentHeight = sumWithinRange(stretchY, content[1], content[3]);\n fixedOffsetX = content[0] - stretchOffsetX;\n fixedOffsetY = content[1] - stretchOffsetY;\n fixedContentWidth = content[2] - content[0] - stretchContentWidth;\n fixedContentHeight = content[3] - content[1] - stretchContentHeight;\n }\n\n const makeBox = (left, top, right, bottom) => {\n\n const leftEm = getEmOffset(left.stretch - stretchOffsetX, stretchContentWidth, iconWidth, shapedIcon.left);\n const leftPx = getPxOffset(left.fixed - fixedOffsetX, fixedContentWidth, left.stretch, stretchWidth);\n\n const topEm = getEmOffset(top.stretch - stretchOffsetY, stretchContentHeight, iconHeight, shapedIcon.top);\n const topPx = getPxOffset(top.fixed - fixedOffsetY, fixedContentHeight, top.stretch, stretchHeight);\n\n const rightEm = getEmOffset(right.stretch - stretchOffsetX, stretchContentWidth, iconWidth, shapedIcon.left);\n const rightPx = getPxOffset(right.fixed - fixedOffsetX, fixedContentWidth, right.stretch, stretchWidth);\n\n const bottomEm = getEmOffset(bottom.stretch - stretchOffsetY, stretchContentHeight, iconHeight, shapedIcon.top);\n const bottomPx = getPxOffset(bottom.fixed - fixedOffsetY, fixedContentHeight, bottom.stretch, stretchHeight);\n\n const tl = new Point(leftEm, topEm);\n const tr = new Point(rightEm, topEm);\n const br = new Point(rightEm, bottomEm);\n const bl = new Point(leftEm, bottomEm);\n const pixelOffsetTL = new Point(leftPx / pixelRatio, topPx / pixelRatio);\n const pixelOffsetBR = new Point(rightPx / pixelRatio, bottomPx / pixelRatio);\n\n const angle = iconRotate * Math.PI / 180;\n\n if (angle) {\n const sin = Math.sin(angle),\n cos = Math.cos(angle),\n matrix = [cos, -sin, sin, cos];\n\n tl._matMult(matrix);\n tr._matMult(matrix);\n bl._matMult(matrix);\n br._matMult(matrix);\n }\n\n const x1 = left.stretch + left.fixed;\n const x2 = right.stretch + right.fixed;\n const y1 = top.stretch + top.fixed;\n const y2 = bottom.stretch + bottom.fixed;\n\n const subRect = {\n x: image.paddedRect.x + border + x1,\n y: image.paddedRect.y + border + y1,\n w: x2 - x1,\n h: y2 - y1\n };\n\n const minFontScaleX = fixedContentWidth / pixelRatio / iconWidth;\n const minFontScaleY = fixedContentHeight / pixelRatio / iconHeight;\n\n // Icon quad is padded, so texture coordinates also need to be padded.\n return {tl, tr, bl, br, tex: subRect, writingMode: undefined, glyphOffset: [0, 0], sectionIndex: 0, pixelOffsetTL, pixelOffsetBR, minFontScaleX, minFontScaleY, isSDF: isSDFIcon};\n };\n\n if (!hasIconTextFit || (!image.stretchX && !image.stretchY)) {\n quads.push(makeBox(\n {fixed: 0, stretch: -1},\n {fixed: 0, stretch: -1},\n {fixed: 0, stretch: imageWidth + 1},\n {fixed: 0, stretch: imageHeight + 1}));\n } else {\n const xCuts = stretchZonesToCuts(stretchX, fixedWidth, stretchWidth);\n const yCuts = stretchZonesToCuts(stretchY, fixedHeight, stretchHeight);\n\n for (let xi = 0; xi < xCuts.length - 1; xi++) {\n const x1 = xCuts[xi];\n const x2 = xCuts[xi + 1];\n for (let yi = 0; yi < yCuts.length - 1; yi++) {\n const y1 = yCuts[yi];\n const y2 = yCuts[yi + 1];\n quads.push(makeBox(x1, y1, x2, y2));\n }\n }\n }\n\n return quads;\n}\n\nfunction sumWithinRange(ranges, min, max) {\n let sum = 0;\n for (const range of ranges) {\n sum += Math.max(min, Math.min(max, range[1])) - Math.max(min, Math.min(max, range[0]));\n }\n return sum;\n}\n\nfunction stretchZonesToCuts(stretchZones, fixedSize, stretchSize) {\n const cuts = [{fixed: -border, stretch: 0}];\n\n for (const [c1, c2] of stretchZones) {\n const last = cuts[cuts.length - 1];\n cuts.push({\n fixed: c1 - last.stretch,\n stretch: last.stretch\n });\n cuts.push({\n fixed: c1 - last.stretch,\n stretch: last.stretch + (c2 - c1)\n });\n }\n cuts.push({\n fixed: fixedSize + border,\n stretch: stretchSize\n });\n return cuts;\n}\n\nfunction getEmOffset(stretchOffset, stretchSize, iconSize, iconOffset) {\n return stretchOffset / stretchSize * iconSize + iconOffset;\n}\n\nfunction getPxOffset(fixedOffset, fixedSize, stretchOffset, stretchSize) {\n return fixedOffset - fixedSize * stretchOffset / stretchSize;\n}\n\n/**\n * Create the quads used for rendering a text label.\n * @private\n */\nexport function getGlyphQuads(anchor: Anchor,\n shaping: Shaping,\n textOffset: [number, number],\n layer: SymbolStyleLayer,\n alongLine: boolean,\n feature: Feature,\n imageMap: {[_: string]: StyleImage},\n allowVerticalPlacement: boolean): Array {\n\n const textRotate = layer.layout.get('text-rotate').evaluate(feature, {}) * Math.PI / 180;\n const quads = [];\n\n for (const line of shaping.positionedLines) {\n for (const positionedGlyph of line.positionedGlyphs) {\n if (!positionedGlyph.rect) continue;\n const textureRect = positionedGlyph.rect || {};\n\n // The rects have an additional buffer that is not included in their size.\n const glyphPadding = 1.0;\n let rectBuffer = GLYPH_PBF_BORDER + glyphPadding;\n let isSDF = true;\n let pixelRatio = 1.0;\n let lineOffset = 0.0;\n\n const rotateVerticalGlyph = (alongLine || allowVerticalPlacement) && positionedGlyph.vertical;\n const halfAdvance = positionedGlyph.metrics.advance * positionedGlyph.scale / 2;\n\n // Align images and scaled glyphs in the middle of a vertical line.\n if (allowVerticalPlacement && shaping.verticalizable) {\n const scaledGlyphOffset = (positionedGlyph.scale - 1) * ONE_EM;\n const imageOffset = (ONE_EM - positionedGlyph.metrics.width * positionedGlyph.scale) / 2;\n lineOffset = line.lineOffset / 2 - (positionedGlyph.imageName ? -imageOffset : scaledGlyphOffset);\n }\n\n if (positionedGlyph.imageName) {\n const image = imageMap[positionedGlyph.imageName];\n isSDF = image.sdf;\n pixelRatio = image.pixelRatio;\n rectBuffer = IMAGE_PADDING / pixelRatio;\n }\n\n const glyphOffset = alongLine ?\n [positionedGlyph.x + halfAdvance, positionedGlyph.y] :\n [0, 0];\n\n let builtInOffset = alongLine ?\n [0, 0] :\n [positionedGlyph.x + halfAdvance + textOffset[0], positionedGlyph.y + textOffset[1] - lineOffset];\n\n let verticalizedLabelOffset = [0, 0];\n if (rotateVerticalGlyph) {\n // Vertical POI labels that are rotated 90deg CW and whose glyphs must preserve upright orientation\n // need to be rotated 90deg CCW. After a quad is rotated, it is translated to the original built-in offset.\n verticalizedLabelOffset = builtInOffset;\n builtInOffset = [0, 0];\n }\n\n const x1 = (positionedGlyph.metrics.left - rectBuffer) * positionedGlyph.scale - halfAdvance + builtInOffset[0];\n const y1 = (-positionedGlyph.metrics.top - rectBuffer) * positionedGlyph.scale + builtInOffset[1];\n const x2 = x1 + textureRect.w * positionedGlyph.scale / pixelRatio;\n const y2 = y1 + textureRect.h * positionedGlyph.scale / pixelRatio;\n\n const tl = new Point(x1, y1);\n const tr = new Point(x2, y1);\n const bl = new Point(x1, y2);\n const br = new Point(x2, y2);\n\n if (rotateVerticalGlyph) {\n // Vertical-supporting glyphs are laid out in 24x24 point boxes (1 square em)\n // In horizontal orientation, the y values for glyphs are below the midline\n // and we use a \"yOffset\" of -17 to pull them up to the middle.\n // By rotating counter-clockwise around the point at the center of the left\n // edge of a 24x24 layout box centered below the midline, we align the center\n // of the glyphs with the horizontal midline, so the yOffset is no longer\n // necessary, but we also pull the glyph to the left along the x axis.\n // The y coordinate includes baseline yOffset, thus needs to be accounted\n // for when glyph is rotated and translated.\n const center = new Point(-halfAdvance, halfAdvance - SHAPING_DEFAULT_OFFSET);\n const verticalRotation = -Math.PI / 2;\n\n // xHalfWidthOffsetCorrection is a difference between full-width and half-width\n // advance, should be 0 for full-width glyphs and will pull up half-width glyphs.\n const xHalfWidthOffsetCorrection = ONE_EM / 2 - halfAdvance;\n const yImageOffsetCorrection = positionedGlyph.imageName ? xHalfWidthOffsetCorrection : 0.0;\n const halfWidthOffsetCorrection = new Point(5 - SHAPING_DEFAULT_OFFSET - xHalfWidthOffsetCorrection, -yImageOffsetCorrection);\n const verticalOffsetCorrection = new Point(...verticalizedLabelOffset);\n tl._rotateAround(verticalRotation, center)._add(halfWidthOffsetCorrection)._add(verticalOffsetCorrection);\n tr._rotateAround(verticalRotation, center)._add(halfWidthOffsetCorrection)._add(verticalOffsetCorrection);\n bl._rotateAround(verticalRotation, center)._add(halfWidthOffsetCorrection)._add(verticalOffsetCorrection);\n br._rotateAround(verticalRotation, center)._add(halfWidthOffsetCorrection)._add(verticalOffsetCorrection);\n }\n\n if (textRotate) {\n const sin = Math.sin(textRotate),\n cos = Math.cos(textRotate),\n matrix = [cos, -sin, sin, cos];\n\n tl._matMult(matrix);\n tr._matMult(matrix);\n bl._matMult(matrix);\n br._matMult(matrix);\n }\n\n const pixelOffsetTL = new Point(0, 0);\n const pixelOffsetBR = new Point(0, 0);\n const minFontScaleX = 0;\n const minFontScaleY = 0;\n quads.push({tl, tr, bl, br, tex: textureRect, writingMode: shaping.writingMode, glyphOffset, sectionIndex: positionedGlyph.sectionIndex, isSDF, pixelOffsetTL, pixelOffsetBR, minFontScaleX, minFontScaleY});\n }\n }\n\n return quads;\n}\n", "// @flow\n\nimport type {CollisionBoxArray} from '../data/array_types';\nimport Point from '@mapbox/point-geometry';\nimport type Anchor from './anchor';\n\n/**\n * A CollisionFeature represents the area of the tile covered by a single label.\n * It is used with CollisionIndex to check if the label overlaps with any\n * previous labels. A CollisionFeature is mostly just a set of CollisionBox\n * objects.\n *\n * @private\n */\nclass CollisionFeature {\n boxStartIndex: number;\n boxEndIndex: number;\n circleDiameter: ?number;\n\n /**\n * Create a CollisionFeature, adding its collision box data to the given collisionBoxArray in the process.\n * For line aligned labels a collision circle diameter is computed instead.\n *\n * @param anchor The point along the line around which the label is anchored.\n * @param shaped The text or icon shaping results.\n * @param boxScale A magic number used to convert from glyph metrics units to geometry units.\n * @param padding The amount of padding to add around the label edges.\n * @param alignLine Whether the label is aligned with the line or the viewport.\n * @private\n */\n constructor(collisionBoxArray: CollisionBoxArray,\n anchor: Anchor,\n featureIndex: number,\n sourceLayerIndex: number,\n bucketIndex: number,\n shaped: Object,\n boxScale: number,\n padding: number,\n alignLine: boolean,\n rotate: number) {\n\n this.boxStartIndex = collisionBoxArray.length;\n\n if (alignLine) {\n // Compute height of the shape in glyph metrics and apply collision padding.\n // Note that the pixel based 'text-padding' is applied at runtime\n let top = shaped.top;\n let bottom = shaped.bottom;\n const collisionPadding = shaped.collisionPadding;\n\n if (collisionPadding) {\n top -= collisionPadding[1];\n bottom += collisionPadding[3];\n }\n\n let height = bottom - top;\n\n if (height > 0) {\n // set minimum box height to avoid very many small labels\n height = Math.max(10, height);\n this.circleDiameter = height;\n }\n } else {\n let y1 = shaped.top * boxScale - padding;\n let y2 = shaped.bottom * boxScale + padding;\n let x1 = shaped.left * boxScale - padding;\n let x2 = shaped.right * boxScale + padding;\n\n const collisionPadding = shaped.collisionPadding;\n if (collisionPadding) {\n x1 -= collisionPadding[0] * boxScale;\n y1 -= collisionPadding[1] * boxScale;\n x2 += collisionPadding[2] * boxScale;\n y2 += collisionPadding[3] * boxScale;\n }\n\n if (rotate) {\n // Account for *-rotate in point collision boxes\n // See https://github.com/mapbox/mapbox-gl-js/issues/6075\n // Doesn't account for icon-text-fit\n\n const tl = new Point(x1, y1);\n const tr = new Point(x2, y1);\n const bl = new Point(x1, y2);\n const br = new Point(x2, y2);\n\n const rotateRadians = rotate * Math.PI / 180;\n\n tl._rotate(rotateRadians);\n tr._rotate(rotateRadians);\n bl._rotate(rotateRadians);\n br._rotate(rotateRadians);\n\n // Collision features require an \"on-axis\" geometry,\n // so take the envelope of the rotated geometry\n // (may be quite large for wide labels rotated 45 degrees)\n x1 = Math.min(tl.x, tr.x, bl.x, br.x);\n x2 = Math.max(tl.x, tr.x, bl.x, br.x);\n y1 = Math.min(tl.y, tr.y, bl.y, br.y);\n y2 = Math.max(tl.y, tr.y, bl.y, br.y);\n }\n collisionBoxArray.emplaceBack(anchor.x, anchor.y, x1, y1, x2, y2, featureIndex, sourceLayerIndex, bucketIndex);\n }\n\n this.boxEndIndex = collisionBoxArray.length;\n }\n}\n\nexport default CollisionFeature;\n", "\nexport default class TinyQueue {\n constructor(data = [], compare = defaultCompare) {\n this.data = data;\n this.length = this.data.length;\n this.compare = compare;\n\n if (this.length > 0) {\n for (let i = (this.length >> 1) - 1; i >= 0; i--) this._down(i);\n }\n }\n\n push(item) {\n this.data.push(item);\n this.length++;\n this._up(this.length - 1);\n }\n\n pop() {\n if (this.length === 0) return undefined;\n\n const top = this.data[0];\n const bottom = this.data.pop();\n this.length--;\n\n if (this.length > 0) {\n this.data[0] = bottom;\n this._down(0);\n }\n\n return top;\n }\n\n peek() {\n return this.data[0];\n }\n\n _up(pos) {\n const {data, compare} = this;\n const item = data[pos];\n\n while (pos > 0) {\n const parent = (pos - 1) >> 1;\n const current = data[parent];\n if (compare(item, current) >= 0) break;\n data[pos] = current;\n pos = parent;\n }\n\n data[pos] = item;\n }\n\n _down(pos) {\n const {data, compare} = this;\n const halfLength = this.length >> 1;\n const item = data[pos];\n\n while (pos < halfLength) {\n let left = (pos << 1) + 1;\n let best = data[left];\n const right = left + 1;\n\n if (right < this.length && compare(data[right], best) < 0) {\n left = right;\n best = data[right];\n }\n if (compare(best, item) >= 0) break;\n\n data[pos] = best;\n pos = left;\n }\n\n data[pos] = item;\n }\n}\n\nfunction defaultCompare(a, b) {\n return a < b ? -1 : a > b ? 1 : 0;\n}\n", "// @flow\n\nimport Queue from 'tinyqueue';\n\nimport Point from '@mapbox/point-geometry';\nimport {distToSegmentSquared} from './intersection_tests';\n\n/**\n * Finds an approximation of a polygon's Pole Of Inaccessibiliy https://en.wikipedia.org/wiki/Pole_of_inaccessibility\n * This is a copy of http://github.com/mapbox/polylabel adapted to use Points\n *\n * @param polygonRings first item in array is the outer ring followed optionally by the list of holes, should be an element of the result of util/classify_rings\n * @param precision Specified in input coordinate units. If 0 returns after first run, if > 0 repeatedly narrows the search space until the radius of the area searched for the best pole is less than precision\n * @param debug Print some statistics to the console during execution\n * @returns Pole of Inaccessibiliy.\n * @private\n */\nexport default function (polygonRings: Array>, precision?: number = 1, debug?: boolean = false): Point {\n // find the bounding box of the outer ring\n let minX = Infinity, minY = Infinity, maxX = -Infinity, maxY = -Infinity;\n const outerRing = polygonRings[0];\n for (let i = 0; i < outerRing.length; i++) {\n const p = outerRing[i];\n if (!i || p.x < minX) minX = p.x;\n if (!i || p.y < minY) minY = p.y;\n if (!i || p.x > maxX) maxX = p.x;\n if (!i || p.y > maxY) maxY = p.y;\n }\n\n const width = maxX - minX;\n const height = maxY - minY;\n const cellSize = Math.min(width, height);\n let h = cellSize / 2;\n\n // a priority queue of cells in order of their \"potential\" (max distance to polygon)\n const cellQueue = new Queue([], compareMax);\n\n if (cellSize === 0) return new Point(minX, minY);\n\n // cover polygon with initial cells\n for (let x = minX; x < maxX; x += cellSize) {\n for (let y = minY; y < maxY; y += cellSize) {\n cellQueue.push(new Cell(x + h, y + h, h, polygonRings));\n }\n }\n\n // take centroid as the first best guess\n let bestCell = getCentroidCell(polygonRings);\n let numProbes = cellQueue.length;\n\n while (cellQueue.length) {\n // pick the most promising cell from the queue\n const cell = cellQueue.pop();\n\n // update the best cell if we found a better one\n if (cell.d > bestCell.d || !bestCell.d) {\n bestCell = cell;\n if (debug) console.log('found best %d after %d probes', Math.round(1e4 * cell.d) / 1e4, numProbes);\n }\n\n // do not drill down further if there's no chance of a better solution\n if (cell.max - bestCell.d <= precision) continue;\n\n // split the cell into four cells\n h = cell.h / 2;\n cellQueue.push(new Cell(cell.p.x - h, cell.p.y - h, h, polygonRings));\n cellQueue.push(new Cell(cell.p.x + h, cell.p.y - h, h, polygonRings));\n cellQueue.push(new Cell(cell.p.x - h, cell.p.y + h, h, polygonRings));\n cellQueue.push(new Cell(cell.p.x + h, cell.p.y + h, h, polygonRings));\n numProbes += 4;\n }\n\n if (debug) {\n console.log(`num probes: ${numProbes}`);\n console.log(`best distance: ${bestCell.d}`);\n }\n\n return bestCell.p;\n}\n\nfunction compareMax(a, b) {\n return b.max - a.max;\n}\n\nfunction Cell(x, y, h, polygon) {\n this.p = new Point(x, y);\n this.h = h; // half the cell size\n this.d = pointToPolygonDist(this.p, polygon); // distance from cell center to polygon\n this.max = this.d + this.h * Math.SQRT2; // max distance to polygon within a cell\n}\n\n// signed distance from point to polygon outline (negative if point is outside)\nfunction pointToPolygonDist(p, polygon) {\n let inside = false;\n let minDistSq = Infinity;\n\n for (let k = 0; k < polygon.length; k++) {\n const ring = polygon[k];\n\n for (let i = 0, len = ring.length, j = len - 1; i < len; j = i++) {\n const a = ring[i];\n const b = ring[j];\n\n if ((a.y > p.y !== b.y > p.y) &&\n (p.x < (b.x - a.x) * (p.y - a.y) / (b.y - a.y) + a.x)) inside = !inside;\n\n minDistSq = Math.min(minDistSq, distToSegmentSquared(p, a, b));\n }\n }\n\n return (inside ? 1 : -1) * Math.sqrt(minDistSq);\n}\n\n// get polygon centroid\nfunction getCentroidCell(polygon) {\n let area = 0;\n let x = 0;\n let y = 0;\n const points = polygon[0];\n for (let i = 0, len = points.length, j = len - 1; i < len; j = i++) {\n const a = points[i];\n const b = points[j];\n const f = a.x * b.y - b.x * a.y;\n x += (a.x + b.x) * f;\n y += (a.y + b.y) * f;\n area += f * 3;\n }\n return new Cell(x / area, y / area, 0, polygon);\n}\n", "// @flow\n\nimport Anchor from './anchor';\n\nimport {getAnchors, getCenterAnchor} from './get_anchors';\nimport clipLine from './clip_line';\nimport {shapeText, shapeIcon, WritingMode, fitIconToText} from './shaping';\nimport {getGlyphQuads, getIconQuads} from './quads';\nimport CollisionFeature from './collision_feature';\nimport {warnOnce} from '../util/util';\nimport {\n allowsVerticalWritingMode,\n allowsLetterSpacing\n} from '../util/script_detection';\nimport findPoleOfInaccessibility from '../util/find_pole_of_inaccessibility';\nimport classifyRings from '../util/classify_rings';\nimport EXTENT from '../data/extent';\nimport SymbolBucket from '../data/bucket/symbol_bucket';\nimport EvaluationParameters from '../style/evaluation_parameters';\nimport {SIZE_PACK_FACTOR} from './symbol_size';\nimport ONE_EM from './one_em';\nimport type {CanonicalTileID} from '../source/tile_id';\nimport type {Shaping, PositionedIcon, TextJustify} from './shaping';\nimport type {CollisionBoxArray} from '../data/array_types';\nimport type {SymbolFeature} from '../data/bucket/symbol_bucket';\nimport type {StyleImage} from '../style/style_image';\nimport type {StyleGlyph} from '../style/style_glyph';\nimport type SymbolStyleLayer from '../style/style_layer/symbol_style_layer';\nimport type {ImagePosition} from '../render/image_atlas';\nimport type {GlyphPosition} from '../render/glyph_atlas';\nimport type {PossiblyEvaluatedPropertyValue} from '../style/properties';\n\nimport Point from '@mapbox/point-geometry';\nimport murmur3 from 'murmurhash-js';\n\n// The symbol layout process needs `text-size` evaluated at up to five different zoom levels, and\n// `icon-size` at up to three:\n//\n// 1. `text-size` at the zoom level of the bucket. Used to calculate a per-feature size for source `text-size`\n// expressions, and to calculate the box dimensions for icon-text-fit.\n// 2. `icon-size` at the zoom level of the bucket. Used to calculate a per-feature size for source `icon-size`\n// expressions.\n// 3. `text-size` and `icon-size` at the zoom level of the bucket, plus one. Used to calculate collision boxes.\n// 4. `text-size` at zoom level 18. Used for something line-symbol-placement-related.\n// 5. For composite `*-size` expressions: two zoom levels of curve stops that \"cover\" the zoom level of the\n// bucket. These go into a vertex buffer and are used by the shader to interpolate the size at render time.\n//\n// (1) and (2) are stored in `bucket.layers[0].layout`. The remainder are below.\n//\ntype Sizes = {\n layoutTextSize: PossiblyEvaluatedPropertyValue, // (3)\n layoutIconSize: PossiblyEvaluatedPropertyValue, // (3)\n textMaxSize: PossiblyEvaluatedPropertyValue, // (4)\n compositeTextSizes: [PossiblyEvaluatedPropertyValue, PossiblyEvaluatedPropertyValue], // (5)\n compositeIconSizes: [PossiblyEvaluatedPropertyValue, PossiblyEvaluatedPropertyValue], // (5)\n};\n\nexport type TextAnchor = 'center' | 'left' | 'right' | 'top' | 'bottom' | 'top-left' | 'top-right' | 'bottom-left' | 'bottom-right';\n\n// The radial offset is to the edge of the text box\n// In the horizontal direction, the edge of the text box is where glyphs start\n// But in the vertical direction, the glyphs appear to \"start\" at the baseline\n// We don't actually load baseline data, but we assume an offset of ONE_EM - 17\n// (see \"yOffset\" in shaping.js)\nconst baselineOffset = 7;\nconst INVALID_TEXT_OFFSET = Number.POSITIVE_INFINITY;\n\nexport function evaluateVariableOffset(anchor: TextAnchor, offset: [number, number]) {\n\n function fromRadialOffset(anchor: TextAnchor, radialOffset: number) {\n let x = 0, y = 0;\n if (radialOffset < 0) radialOffset = 0; // Ignore negative offset.\n // solve for r where r^2 + r^2 = radialOffset^2\n const hypotenuse = radialOffset / Math.sqrt(2);\n switch (anchor) {\n case 'top-right':\n case 'top-left':\n y = hypotenuse - baselineOffset;\n break;\n case 'bottom-right':\n case 'bottom-left':\n y = -hypotenuse + baselineOffset;\n break;\n case 'bottom':\n y = -radialOffset + baselineOffset;\n break;\n case 'top':\n y = radialOffset - baselineOffset;\n break;\n }\n\n switch (anchor) {\n case 'top-right':\n case 'bottom-right':\n x = -hypotenuse;\n break;\n case 'top-left':\n case 'bottom-left':\n x = hypotenuse;\n break;\n case 'left':\n x = radialOffset;\n break;\n case 'right':\n x = -radialOffset;\n break;\n }\n\n return [x, y];\n }\n\n function fromTextOffset(anchor: TextAnchor, offsetX: number, offsetY: number) {\n let x = 0, y = 0;\n // Use absolute offset values.\n offsetX = Math.abs(offsetX);\n offsetY = Math.abs(offsetY);\n\n switch (anchor) {\n case 'top-right':\n case 'top-left':\n case 'top':\n y = offsetY - baselineOffset;\n break;\n case 'bottom-right':\n case 'bottom-left':\n case 'bottom':\n y = -offsetY + baselineOffset;\n break;\n }\n\n switch (anchor) {\n case 'top-right':\n case 'bottom-right':\n case 'right':\n x = -offsetX;\n break;\n case 'top-left':\n case 'bottom-left':\n case 'left':\n x = offsetX;\n break;\n }\n\n return [x, y];\n }\n\n return (offset[1] !== INVALID_TEXT_OFFSET) ? fromTextOffset(anchor, offset[0], offset[1]) : fromRadialOffset(anchor, offset[0]);\n}\n\nexport function performSymbolLayout(bucket: SymbolBucket,\n glyphMap: {[_: string]: {[number]: ?StyleGlyph}},\n glyphPositions: {[_: string]: {[number]: GlyphPosition}},\n imageMap: {[_: string]: StyleImage},\n imagePositions: {[_: string]: ImagePosition},\n showCollisionBoxes: boolean,\n canonical: CanonicalTileID) {\n bucket.createArrays();\n\n const tileSize = 512 * bucket.overscaling;\n bucket.tilePixelRatio = EXTENT / tileSize;\n bucket.compareText = {};\n bucket.iconsNeedLinear = false;\n\n const layout = bucket.layers[0].layout;\n const unevaluatedLayoutValues = bucket.layers[0]._unevaluatedLayout._values;\n\n const sizes = {};\n\n if (bucket.textSizeData.kind === 'composite') {\n const {minZoom, maxZoom} = bucket.textSizeData;\n sizes.compositeTextSizes = [\n unevaluatedLayoutValues['text-size'].possiblyEvaluate(new EvaluationParameters(minZoom), canonical),\n unevaluatedLayoutValues['text-size'].possiblyEvaluate(new EvaluationParameters(maxZoom), canonical)\n ];\n }\n\n if (bucket.iconSizeData.kind === 'composite') {\n const {minZoom, maxZoom} = bucket.iconSizeData;\n sizes.compositeIconSizes = [\n unevaluatedLayoutValues['icon-size'].possiblyEvaluate(new EvaluationParameters(minZoom), canonical),\n unevaluatedLayoutValues['icon-size'].possiblyEvaluate(new EvaluationParameters(maxZoom), canonical)\n ];\n }\n\n sizes.layoutTextSize = unevaluatedLayoutValues['text-size'].possiblyEvaluate(new EvaluationParameters(bucket.zoom + 1), canonical);\n sizes.layoutIconSize = unevaluatedLayoutValues['icon-size'].possiblyEvaluate(new EvaluationParameters(bucket.zoom + 1), canonical);\n sizes.textMaxSize = unevaluatedLayoutValues['text-size'].possiblyEvaluate(new EvaluationParameters(18));\n\n const lineHeight = layout.get('text-line-height') * ONE_EM;\n const textAlongLine = layout.get('text-rotation-alignment') === 'map' && layout.get('symbol-placement') !== 'point';\n const keepUpright = layout.get('text-keep-upright');\n const textSize = layout.get('text-size');\n\n for (const feature of bucket.features) {\n const fontstack = layout.get('text-font').evaluate(feature, {}, canonical).join(',');\n const layoutTextSizeThisZoom = textSize.evaluate(feature, {}, canonical);\n const layoutTextSize = sizes.layoutTextSize.evaluate(feature, {}, canonical);\n const layoutIconSize = sizes.layoutIconSize.evaluate(feature, {}, canonical);\n\n const shapedTextOrientations = {\n horizontal: {},\n vertical: undefined\n };\n const text = feature.text;\n let textOffset: [number, number] = [0, 0];\n if (text) {\n const unformattedText = text.toString();\n const spacing = layout.get('text-letter-spacing').evaluate(feature, {}, canonical) * ONE_EM;\n const spacingIfAllowed = allowsLetterSpacing(unformattedText) ? spacing : 0;\n\n const textAnchor = layout.get('text-anchor').evaluate(feature, {}, canonical);\n const variableTextAnchor = layout.get('text-variable-anchor');\n\n if (!variableTextAnchor) {\n const radialOffset = layout.get('text-radial-offset').evaluate(feature, {}, canonical);\n // Layers with variable anchors use the `text-radial-offset` property and the [x, y] offset vector\n // is calculated at placement time instead of layout time\n if (radialOffset) {\n // The style spec says don't use `text-offset` and `text-radial-offset` together\n // but doesn't actually specify what happens if you use both. We go with the radial offset.\n textOffset = evaluateVariableOffset(textAnchor, [radialOffset * ONE_EM, INVALID_TEXT_OFFSET]);\n } else {\n textOffset = (layout.get('text-offset').evaluate(feature, {}, canonical).map(t => t * ONE_EM): any);\n }\n }\n\n let textJustify = textAlongLine ?\n \"center\" :\n layout.get('text-justify').evaluate(feature, {}, canonical);\n\n const symbolPlacement = layout.get('symbol-placement');\n const maxWidth = symbolPlacement === 'point' ?\n layout.get('text-max-width').evaluate(feature, {}, canonical) * ONE_EM :\n 0;\n\n const addVerticalShapingForPointLabelIfNeeded = () => {\n if (bucket.allowVerticalPlacement && allowsVerticalWritingMode(unformattedText)) {\n // Vertical POI label placement is meant to be used for scripts that support vertical\n // writing mode, thus, default left justification is used. If Latin\n // scripts would need to be supported, this should take into account other justifications.\n shapedTextOrientations.vertical = shapeText(text, glyphMap, glyphPositions, imagePositions, fontstack, maxWidth, lineHeight, textAnchor,\n 'left', spacingIfAllowed, textOffset, WritingMode.vertical, true, symbolPlacement, layoutTextSize, layoutTextSizeThisZoom);\n }\n };\n\n // If this layer uses text-variable-anchor, generate shapings for all justification possibilities.\n if (!textAlongLine && variableTextAnchor) {\n const justifications = textJustify === \"auto\" ?\n variableTextAnchor.map(a => getAnchorJustification(a)) :\n [textJustify];\n\n let singleLine = false;\n for (let i = 0; i < justifications.length; i++) {\n const justification: TextJustify = justifications[i];\n if (shapedTextOrientations.horizontal[justification]) continue;\n if (singleLine) {\n // If the shaping for the first justification was only a single line, we\n // can re-use it for the other justifications\n shapedTextOrientations.horizontal[justification] = shapedTextOrientations.horizontal[0];\n } else {\n // If using text-variable-anchor for the layer, we use a center anchor for all shapings and apply\n // the offsets for the anchor in the placement step.\n const shaping = shapeText(text, glyphMap, glyphPositions, imagePositions, fontstack, maxWidth, lineHeight, 'center',\n justification, spacingIfAllowed, textOffset, WritingMode.horizontal, false, symbolPlacement, layoutTextSize, layoutTextSizeThisZoom);\n if (shaping) {\n shapedTextOrientations.horizontal[justification] = shaping;\n singleLine = shaping.positionedLines.length === 1;\n }\n }\n }\n\n addVerticalShapingForPointLabelIfNeeded();\n } else {\n if (textJustify === \"auto\") {\n textJustify = getAnchorJustification(textAnchor);\n }\n\n // Horizontal point or line label.\n const shaping = shapeText(text, glyphMap, glyphPositions, imagePositions, fontstack, maxWidth, lineHeight, textAnchor, textJustify, spacingIfAllowed,\n textOffset, WritingMode.horizontal, false, symbolPlacement, layoutTextSize, layoutTextSizeThisZoom);\n if (shaping) shapedTextOrientations.horizontal[textJustify] = shaping;\n\n // Vertical point label (if allowVerticalPlacement is enabled).\n addVerticalShapingForPointLabelIfNeeded();\n\n // Verticalized line label.\n if (allowsVerticalWritingMode(unformattedText) && textAlongLine && keepUpright) {\n shapedTextOrientations.vertical = shapeText(text, glyphMap, glyphPositions, imagePositions, fontstack, maxWidth, lineHeight, textAnchor, textJustify,\n spacingIfAllowed, textOffset, WritingMode.vertical, false, symbolPlacement, layoutTextSize, layoutTextSizeThisZoom);\n }\n }\n }\n\n let shapedIcon;\n let isSDFIcon = false;\n if (feature.icon && feature.icon.name) {\n const image = imageMap[feature.icon.name];\n if (image) {\n shapedIcon = shapeIcon(\n imagePositions[feature.icon.name],\n layout.get('icon-offset').evaluate(feature, {}, canonical),\n layout.get('icon-anchor').evaluate(feature, {}, canonical));\n isSDFIcon = image.sdf;\n if (bucket.sdfIcons === undefined) {\n bucket.sdfIcons = image.sdf;\n } else if (bucket.sdfIcons !== image.sdf) {\n warnOnce('Style sheet warning: Cannot mix SDF and non-SDF icons in one buffer');\n }\n if (image.pixelRatio !== bucket.pixelRatio) {\n bucket.iconsNeedLinear = true;\n } else if (layout.get('icon-rotate').constantOr(1) !== 0) {\n bucket.iconsNeedLinear = true;\n }\n }\n }\n\n const shapedText = getDefaultHorizontalShaping(shapedTextOrientations.horizontal) || shapedTextOrientations.vertical;\n bucket.iconsInText = shapedText ? shapedText.iconsInText : false;\n if (shapedText || shapedIcon) {\n addFeature(bucket, feature, shapedTextOrientations, shapedIcon, imageMap, sizes, layoutTextSize, layoutIconSize, textOffset, isSDFIcon, canonical);\n }\n }\n\n if (showCollisionBoxes) {\n bucket.generateCollisionDebugBuffers();\n }\n}\n\n// Choose the justification that matches the direction of the TextAnchor\nexport function getAnchorJustification(anchor: TextAnchor): TextJustify {\n switch (anchor) {\n case 'right':\n case 'top-right':\n case 'bottom-right':\n return 'right';\n case 'left':\n case 'top-left':\n case 'bottom-left':\n return 'left';\n }\n return 'center';\n}\n\n/**\n * Given a feature and its shaped text and icon data, add a 'symbol\n * instance' for each _possible_ placement of the symbol feature.\n * (At render timePlaceSymbols#place() selects which of these instances to\n * show or hide based on collisions with symbols in other layers.)\n * @private\n */\nfunction addFeature(bucket: SymbolBucket,\n feature: SymbolFeature,\n shapedTextOrientations: any,\n shapedIcon: PositionedIcon | void,\n imageMap: {[_: string]: StyleImage},\n sizes: Sizes,\n layoutTextSize: number,\n layoutIconSize: number,\n textOffset: [number, number],\n isSDFIcon: boolean, canonical: CanonicalTileID) {\n // To reduce the number of labels that jump around when zooming we need\n // to use a text-size value that is the same for all zoom levels.\n // bucket calculates text-size at a high zoom level so that all tiles can\n // use the same value when calculating anchor positions.\n let textMaxSize = sizes.textMaxSize.evaluate(feature, {});\n if (textMaxSize === undefined) {\n textMaxSize = layoutTextSize;\n }\n const layout = bucket.layers[0].layout;\n const iconOffset = layout.get('icon-offset').evaluate(feature, {}, canonical);\n const defaultHorizontalShaping = getDefaultHorizontalShaping(shapedTextOrientations.horizontal);\n const glyphSize = 24,\n fontScale = layoutTextSize / glyphSize,\n textBoxScale = bucket.tilePixelRatio * fontScale,\n textMaxBoxScale = bucket.tilePixelRatio * textMaxSize / glyphSize,\n iconBoxScale = bucket.tilePixelRatio * layoutIconSize,\n symbolMinDistance = bucket.tilePixelRatio * layout.get('symbol-spacing'),\n textPadding = layout.get('text-padding') * bucket.tilePixelRatio,\n iconPadding = layout.get('icon-padding') * bucket.tilePixelRatio,\n textMaxAngle = layout.get('text-max-angle') / 180 * Math.PI,\n textAlongLine = layout.get('text-rotation-alignment') === 'map' && layout.get('symbol-placement') !== 'point',\n iconAlongLine = layout.get('icon-rotation-alignment') === 'map' && layout.get('symbol-placement') !== 'point',\n symbolPlacement = layout.get('symbol-placement'),\n textRepeatDistance = symbolMinDistance / 2;\n\n const iconTextFit = layout.get('icon-text-fit');\n let verticallyShapedIcon;\n // Adjust shaped icon size when icon-text-fit is used.\n if (shapedIcon && iconTextFit !== 'none') {\n if (bucket.allowVerticalPlacement && shapedTextOrientations.vertical) {\n verticallyShapedIcon = fitIconToText(shapedIcon, shapedTextOrientations.vertical, iconTextFit,\n layout.get('icon-text-fit-padding'), iconOffset, fontScale);\n }\n if (defaultHorizontalShaping) {\n shapedIcon = fitIconToText(shapedIcon, defaultHorizontalShaping, iconTextFit,\n layout.get('icon-text-fit-padding'), iconOffset, fontScale);\n }\n }\n\n const addSymbolAtAnchor = (line, anchor) => {\n if (anchor.x < 0 || anchor.x >= EXTENT || anchor.y < 0 || anchor.y >= EXTENT) {\n // Symbol layers are drawn across tile boundaries, We filter out symbols\n // outside our tile boundaries (which may be included in vector tile buffers)\n // to prevent double-drawing symbols.\n return;\n }\n\n addSymbol(bucket, anchor, line, shapedTextOrientations, shapedIcon, imageMap, verticallyShapedIcon, bucket.layers[0],\n bucket.collisionBoxArray, feature.index, feature.sourceLayerIndex, bucket.index,\n textBoxScale, textPadding, textAlongLine, textOffset,\n iconBoxScale, iconPadding, iconAlongLine, iconOffset,\n feature, sizes, isSDFIcon, canonical, layoutTextSize);\n };\n\n if (symbolPlacement === 'line') {\n for (const line of clipLine(feature.geometry, 0, 0, EXTENT, EXTENT)) {\n const anchors = getAnchors(\n line,\n symbolMinDistance,\n textMaxAngle,\n shapedTextOrientations.vertical || defaultHorizontalShaping,\n shapedIcon,\n glyphSize,\n textMaxBoxScale,\n bucket.overscaling,\n EXTENT\n );\n for (const anchor of anchors) {\n const shapedText = defaultHorizontalShaping;\n if (!shapedText || !anchorIsTooClose(bucket, shapedText.text, textRepeatDistance, anchor)) {\n addSymbolAtAnchor(line, anchor);\n }\n }\n }\n } else if (symbolPlacement === 'line-center') {\n // No clipping, multiple lines per feature are allowed\n // \"lines\" with only one point are ignored as in clipLines\n for (const line of feature.geometry) {\n if (line.length > 1) {\n const anchor = getCenterAnchor(\n line,\n textMaxAngle,\n shapedTextOrientations.vertical || defaultHorizontalShaping,\n shapedIcon,\n glyphSize,\n textMaxBoxScale);\n if (anchor) {\n addSymbolAtAnchor(line, anchor);\n }\n }\n }\n } else if (feature.type === 'Polygon') {\n for (const polygon of classifyRings(feature.geometry, 0)) {\n // 16 here represents 2 pixels\n const poi = findPoleOfInaccessibility(polygon, 16);\n addSymbolAtAnchor(polygon[0], new Anchor(poi.x, poi.y, 0));\n }\n } else if (feature.type === 'LineString') {\n // https://github.com/mapbox/mapbox-gl-js/issues/3808\n for (const line of feature.geometry) {\n addSymbolAtAnchor(line, new Anchor(line[0].x, line[0].y, 0));\n }\n } else if (feature.type === 'Point') {\n for (const points of feature.geometry) {\n for (const point of points) {\n addSymbolAtAnchor([point], new Anchor(point.x, point.y, 0));\n }\n }\n }\n}\n\nconst MAX_GLYPH_ICON_SIZE = 255;\nconst MAX_PACKED_SIZE = MAX_GLYPH_ICON_SIZE * SIZE_PACK_FACTOR;\nexport {MAX_PACKED_SIZE};\n\nfunction addTextVertices(bucket: SymbolBucket,\n anchor: Point,\n shapedText: Shaping,\n imageMap: {[_: string]: StyleImage},\n layer: SymbolStyleLayer,\n textAlongLine: boolean,\n feature: SymbolFeature,\n textOffset: [number, number],\n lineArray: {lineStartIndex: number, lineLength: number},\n writingMode: number,\n placementTypes: Array<'vertical' | 'center' | 'left' | 'right'>,\n placedTextSymbolIndices: {[_: string]: number},\n placedIconIndex: number,\n sizes: Sizes,\n canonical: CanonicalTileID) {\n const glyphQuads = getGlyphQuads(anchor, shapedText, textOffset,\n layer, textAlongLine, feature, imageMap, bucket.allowVerticalPlacement);\n\n const sizeData = bucket.textSizeData;\n let textSizeData = null;\n\n if (sizeData.kind === 'source') {\n textSizeData = [\n SIZE_PACK_FACTOR * layer.layout.get('text-size').evaluate(feature, {})\n ];\n if (textSizeData[0] > MAX_PACKED_SIZE) {\n warnOnce(`${bucket.layerIds[0]}: Value for \"text-size\" is >= ${MAX_GLYPH_ICON_SIZE}. Reduce your \"text-size\".`);\n }\n } else if (sizeData.kind === 'composite') {\n textSizeData = [\n SIZE_PACK_FACTOR * sizes.compositeTextSizes[0].evaluate(feature, {}, canonical),\n SIZE_PACK_FACTOR * sizes.compositeTextSizes[1].evaluate(feature, {}, canonical)\n ];\n if (textSizeData[0] > MAX_PACKED_SIZE || textSizeData[1] > MAX_PACKED_SIZE) {\n warnOnce(`${bucket.layerIds[0]}: Value for \"text-size\" is >= ${MAX_GLYPH_ICON_SIZE}. Reduce your \"text-size\".`);\n }\n }\n\n bucket.addSymbols(\n bucket.text,\n glyphQuads,\n textSizeData,\n textOffset,\n textAlongLine,\n feature,\n writingMode,\n anchor,\n lineArray.lineStartIndex,\n lineArray.lineLength,\n placedIconIndex,\n canonical);\n\n // The placedSymbolArray is used at render time in drawTileSymbols\n // These indices allow access to the array at collision detection time\n for (const placementType of placementTypes) {\n placedTextSymbolIndices[placementType] = bucket.text.placedSymbolArray.length - 1;\n }\n\n return glyphQuads.length * 4;\n}\n\nfunction getDefaultHorizontalShaping(horizontalShaping: {[_: TextJustify]: Shaping}): Shaping | null {\n // We don't care which shaping we get because this is used for collision purposes\n // and all the justifications have the same collision box\n for (const justification: any in horizontalShaping) {\n return horizontalShaping[justification];\n }\n return null;\n}\n\n/**\n * Add a single label & icon placement.\n *\n * @private\n */\nfunction addSymbol(bucket: SymbolBucket,\n anchor: Anchor,\n line: Array,\n shapedTextOrientations: any,\n shapedIcon: PositionedIcon | void,\n imageMap: {[_: string]: StyleImage},\n verticallyShapedIcon: PositionedIcon | void,\n layer: SymbolStyleLayer,\n collisionBoxArray: CollisionBoxArray,\n featureIndex: number,\n sourceLayerIndex: number,\n bucketIndex: number,\n textBoxScale: number,\n textPadding: number,\n textAlongLine: boolean,\n textOffset: [number, number],\n iconBoxScale: number,\n iconPadding: number,\n iconAlongLine: boolean,\n iconOffset: [number, number],\n feature: SymbolFeature,\n sizes: Sizes,\n isSDFIcon: boolean,\n canonical: CanonicalTileID,\n layoutTextSize: number) {\n const lineArray = bucket.addToLineVertexArray(anchor, line);\n\n let textCollisionFeature, iconCollisionFeature, verticalTextCollisionFeature, verticalIconCollisionFeature;\n\n let numIconVertices = 0;\n let numVerticalIconVertices = 0;\n let numHorizontalGlyphVertices = 0;\n let numVerticalGlyphVertices = 0;\n let placedIconSymbolIndex = -1;\n let verticalPlacedIconSymbolIndex = -1;\n const placedTextSymbolIndices = {};\n let key = murmur3('');\n\n let textOffset0 = 0;\n let textOffset1 = 0;\n if (layer._unevaluatedLayout.getValue('text-radial-offset') === undefined) {\n [textOffset0, textOffset1] = (layer.layout.get('text-offset').evaluate(feature, {}, canonical).map(t => t * ONE_EM): any);\n } else {\n textOffset0 = layer.layout.get('text-radial-offset').evaluate(feature, {}, canonical) * ONE_EM;\n textOffset1 = INVALID_TEXT_OFFSET;\n }\n\n if (bucket.allowVerticalPlacement && shapedTextOrientations.vertical) {\n const textRotation = layer.layout.get('text-rotate').evaluate(feature, {}, canonical);\n const verticalTextRotation = textRotation + 90.0;\n const verticalShaping = shapedTextOrientations.vertical;\n verticalTextCollisionFeature = new CollisionFeature(collisionBoxArray, anchor, featureIndex, sourceLayerIndex, bucketIndex, verticalShaping, textBoxScale, textPadding, textAlongLine, verticalTextRotation);\n\n if (verticallyShapedIcon) {\n verticalIconCollisionFeature = new CollisionFeature(collisionBoxArray, anchor, featureIndex, sourceLayerIndex, bucketIndex, verticallyShapedIcon, iconBoxScale, iconPadding, textAlongLine, verticalTextRotation);\n }\n }\n\n //Place icon first, so text can have a reference to its index in the placed symbol array.\n //Text symbols can lazily shift at render-time because of variable anchor placement.\n //If the style specifies an `icon-text-fit` then the icon would have to shift along with it.\n // For more info check `updateVariableAnchors` in `draw_symbol.js` .\n if (shapedIcon) {\n const iconRotate = layer.layout.get('icon-rotate').evaluate(feature, {});\n const hasIconTextFit = layer.layout.get('icon-text-fit') !== 'none';\n const iconQuads = getIconQuads(shapedIcon, iconRotate, isSDFIcon, hasIconTextFit);\n const verticalIconQuads = verticallyShapedIcon ? getIconQuads(verticallyShapedIcon, iconRotate, isSDFIcon, hasIconTextFit) : undefined;\n iconCollisionFeature = new CollisionFeature(collisionBoxArray, anchor, featureIndex, sourceLayerIndex, bucketIndex, shapedIcon, iconBoxScale, iconPadding, /*align boxes to line*/false, iconRotate);\n\n numIconVertices = iconQuads.length * 4;\n\n const sizeData = bucket.iconSizeData;\n let iconSizeData = null;\n\n if (sizeData.kind === 'source') {\n iconSizeData = [\n SIZE_PACK_FACTOR * layer.layout.get('icon-size').evaluate(feature, {})\n ];\n if (iconSizeData[0] > MAX_PACKED_SIZE) {\n warnOnce(`${bucket.layerIds[0]}: Value for \"icon-size\" is >= ${MAX_GLYPH_ICON_SIZE}. Reduce your \"icon-size\".`);\n }\n } else if (sizeData.kind === 'composite') {\n iconSizeData = [\n SIZE_PACK_FACTOR * sizes.compositeIconSizes[0].evaluate(feature, {}, canonical),\n SIZE_PACK_FACTOR * sizes.compositeIconSizes[1].evaluate(feature, {}, canonical)\n ];\n if (iconSizeData[0] > MAX_PACKED_SIZE || iconSizeData[1] > MAX_PACKED_SIZE) {\n warnOnce(`${bucket.layerIds[0]}: Value for \"icon-size\" is >= ${MAX_GLYPH_ICON_SIZE}. Reduce your \"icon-size\".`);\n }\n }\n\n bucket.addSymbols(\n bucket.icon,\n iconQuads,\n iconSizeData,\n iconOffset,\n iconAlongLine,\n feature,\n false,\n anchor,\n lineArray.lineStartIndex,\n lineArray.lineLength,\n // The icon itself does not have an associated symbol since the text isnt placed yet\n -1, canonical);\n\n placedIconSymbolIndex = bucket.icon.placedSymbolArray.length - 1;\n\n if (verticalIconQuads) {\n numVerticalIconVertices = verticalIconQuads.length * 4;\n\n bucket.addSymbols(\n bucket.icon,\n verticalIconQuads,\n iconSizeData,\n iconOffset,\n iconAlongLine,\n feature,\n WritingMode.vertical,\n anchor,\n lineArray.lineStartIndex,\n lineArray.lineLength,\n // The icon itself does not have an associated symbol since the text isnt placed yet\n -1, canonical);\n\n verticalPlacedIconSymbolIndex = bucket.icon.placedSymbolArray.length - 1;\n }\n }\n\n for (const justification: any in shapedTextOrientations.horizontal) {\n const shaping = shapedTextOrientations.horizontal[justification];\n\n if (!textCollisionFeature) {\n key = murmur3(shaping.text);\n const textRotate = layer.layout.get('text-rotate').evaluate(feature, {}, canonical);\n // As a collision approximation, we can use either the vertical or any of the horizontal versions of the feature\n // We're counting on all versions having similar dimensions\n textCollisionFeature = new CollisionFeature(collisionBoxArray, anchor, featureIndex, sourceLayerIndex, bucketIndex, shaping, textBoxScale, textPadding, textAlongLine, textRotate);\n }\n\n const singleLine = shaping.positionedLines.length === 1;\n numHorizontalGlyphVertices += addTextVertices(\n bucket, anchor, shaping, imageMap, layer, textAlongLine, feature, textOffset, lineArray,\n shapedTextOrientations.vertical ? WritingMode.horizontal : WritingMode.horizontalOnly,\n singleLine ? (Object.keys(shapedTextOrientations.horizontal): any) : [justification],\n placedTextSymbolIndices, placedIconSymbolIndex, sizes, canonical);\n\n if (singleLine) {\n break;\n }\n }\n\n if (shapedTextOrientations.vertical) {\n numVerticalGlyphVertices += addTextVertices(\n bucket, anchor, shapedTextOrientations.vertical, imageMap, layer, textAlongLine, feature,\n textOffset, lineArray, WritingMode.vertical, ['vertical'], placedTextSymbolIndices, verticalPlacedIconSymbolIndex, sizes, canonical);\n }\n\n const textBoxStartIndex = textCollisionFeature ? textCollisionFeature.boxStartIndex : bucket.collisionBoxArray.length;\n const textBoxEndIndex = textCollisionFeature ? textCollisionFeature.boxEndIndex : bucket.collisionBoxArray.length;\n\n const verticalTextBoxStartIndex = verticalTextCollisionFeature ? verticalTextCollisionFeature.boxStartIndex : bucket.collisionBoxArray.length;\n const verticalTextBoxEndIndex = verticalTextCollisionFeature ? verticalTextCollisionFeature.boxEndIndex : bucket.collisionBoxArray.length;\n\n const iconBoxStartIndex = iconCollisionFeature ? iconCollisionFeature.boxStartIndex : bucket.collisionBoxArray.length;\n const iconBoxEndIndex = iconCollisionFeature ? iconCollisionFeature.boxEndIndex : bucket.collisionBoxArray.length;\n\n const verticalIconBoxStartIndex = verticalIconCollisionFeature ? verticalIconCollisionFeature.boxStartIndex : bucket.collisionBoxArray.length;\n const verticalIconBoxEndIndex = verticalIconCollisionFeature ? verticalIconCollisionFeature.boxEndIndex : bucket.collisionBoxArray.length;\n\n // Check if runtime collision circles should be used for any of the collision features.\n // It is enough to choose the tallest feature shape as circles are always placed on a line.\n // All measurements are in glyph metrics and later converted into pixels using proper font size \"layoutTextSize\"\n let collisionCircleDiameter = -1;\n\n const getCollisionCircleHeight = (feature: ?CollisionFeature, prevHeight: number): number => {\n if (feature && feature.circleDiameter)\n return Math.max(feature.circleDiameter, prevHeight);\n return prevHeight;\n };\n\n collisionCircleDiameter = getCollisionCircleHeight(textCollisionFeature, collisionCircleDiameter);\n collisionCircleDiameter = getCollisionCircleHeight(verticalTextCollisionFeature, collisionCircleDiameter);\n collisionCircleDiameter = getCollisionCircleHeight(iconCollisionFeature, collisionCircleDiameter);\n collisionCircleDiameter = getCollisionCircleHeight(verticalIconCollisionFeature, collisionCircleDiameter);\n const useRuntimeCollisionCircles = (collisionCircleDiameter > -1) ? 1 : 0;\n\n // Convert circle collision height into pixels\n if (useRuntimeCollisionCircles)\n collisionCircleDiameter *= layoutTextSize / ONE_EM;\n\n if (bucket.glyphOffsetArray.length >= SymbolBucket.MAX_GLYPHS) warnOnce(\n \"Too many glyphs being rendered in a tile. See https://github.com/mapbox/mapbox-gl-js/issues/2907\"\n );\n\n if (feature.sortKey !== undefined) {\n bucket.addToSortKeyRanges(bucket.symbolInstances.length, feature.sortKey);\n }\n\n bucket.symbolInstances.emplaceBack(\n anchor.x,\n anchor.y,\n placedTextSymbolIndices.right >= 0 ? placedTextSymbolIndices.right : -1,\n placedTextSymbolIndices.center >= 0 ? placedTextSymbolIndices.center : -1,\n placedTextSymbolIndices.left >= 0 ? placedTextSymbolIndices.left : -1,\n placedTextSymbolIndices.vertical || -1,\n placedIconSymbolIndex,\n verticalPlacedIconSymbolIndex,\n key,\n textBoxStartIndex,\n textBoxEndIndex,\n verticalTextBoxStartIndex,\n verticalTextBoxEndIndex,\n iconBoxStartIndex,\n iconBoxEndIndex,\n verticalIconBoxStartIndex,\n verticalIconBoxEndIndex,\n featureIndex,\n numHorizontalGlyphVertices,\n numVerticalGlyphVertices,\n numIconVertices,\n numVerticalIconVertices,\n useRuntimeCollisionCircles,\n 0,\n textBoxScale,\n textOffset0,\n textOffset1,\n collisionCircleDiameter);\n}\n\nfunction anchorIsTooClose(bucket: any, text: string, repeatDistance: number, anchor: Point) {\n const compareText = bucket.compareText;\n if (!(text in compareText)) {\n compareText[text] = [];\n } else {\n const otherAnchors = compareText[text];\n for (let k = otherAnchors.length - 1; k >= 0; k--) {\n if (anchor.dist(otherAnchors[k]) < repeatDistance) {\n // If it's within repeatDistance of one anchor, stop looking\n return true;\n }\n }\n }\n // If anchor is not within repeatDistance of any other anchor, add to array\n compareText[text].push(anchor);\n return false;\n}\n", "// @flow\n\nimport {symbolLayoutAttributes,\n collisionVertexAttributes,\n collisionBoxLayout,\n dynamicLayoutAttributes\n} from './symbol_attributes';\n\nimport {SymbolLayoutArray,\n SymbolDynamicLayoutArray,\n SymbolOpacityArray,\n CollisionBoxLayoutArray,\n CollisionVertexArray,\n PlacedSymbolArray,\n SymbolInstanceArray,\n GlyphOffsetArray,\n SymbolLineVertexArray\n} from '../array_types';\n\nimport Point from '@mapbox/point-geometry';\nimport SegmentVector from '../segment';\nimport {ProgramConfigurationSet} from '../program_configuration';\nimport {TriangleIndexArray, LineIndexArray} from '../index_array_type';\nimport transformText from '../../symbol/transform_text';\nimport mergeLines from '../../symbol/mergelines';\nimport {allowsVerticalWritingMode, stringContainsRTLText} from '../../util/script_detection';\nimport {WritingMode} from '../../symbol/shaping';\nimport loadGeometry from '../load_geometry';\nimport toEvaluationFeature from '../evaluation_feature';\nimport mvt from '@mapbox/vector-tile';\nconst vectorTileFeatureTypes = mvt.VectorTileFeature.types;\nimport {verticalizedCharacterMap} from '../../util/verticalize_punctuation';\nimport Anchor from '../../symbol/anchor';\nimport {getSizeData} from '../../symbol/symbol_size';\nimport {MAX_PACKED_SIZE} from '../../symbol/symbol_layout';\nimport {register} from '../../util/web_worker_transfer';\nimport EvaluationParameters from '../../style/evaluation_parameters';\nimport Formatted from '../../style-spec/expression/types/formatted';\nimport ResolvedImage from '../../style-spec/expression/types/resolved_image';\nimport {plugin as globalRTLTextPlugin, getRTLTextPluginStatus} from '../../source/rtl_text_plugin';\nimport {mat4} from 'gl-matrix';\n\nimport type {CanonicalTileID} from '../../source/tile_id';\nimport type {\n Bucket,\n BucketParameters,\n IndexedFeature,\n PopulateParameters\n} from '../bucket';\nimport type {CollisionBoxArray, CollisionBox, SymbolInstance} from '../array_types';\nimport type {StructArray, StructArrayMember} from '../../util/struct_array';\nimport SymbolStyleLayer from '../../style/style_layer/symbol_style_layer';\nimport type Context from '../../gl/context';\nimport type IndexBuffer from '../../gl/index_buffer';\nimport type VertexBuffer from '../../gl/vertex_buffer';\nimport type {SymbolQuad} from '../../symbol/quads';\nimport type {SizeData} from '../../symbol/symbol_size';\nimport type {FeatureStates} from '../../source/source_state';\nimport type {ImagePosition} from '../../render/image_atlas';\n\nexport type SingleCollisionBox = {\n x1: number;\n y1: number;\n x2: number;\n y2: number;\n anchorPointX: number;\n anchorPointY: number;\n};\n\nexport type CollisionArrays = {\n textBox?: SingleCollisionBox;\n verticalTextBox?: SingleCollisionBox;\n iconBox?: SingleCollisionBox;\n verticalIconBox?: SingleCollisionBox;\n textFeatureIndex?: number;\n verticalTextFeatureIndex?: number;\n iconFeatureIndex?: number;\n verticalIconFeatureIndex?: number;\n};\n\nexport type SymbolFeature = {|\n sortKey: number | void,\n text: Formatted | void,\n icon: ?ResolvedImage,\n index: number,\n sourceLayerIndex: number,\n geometry: Array>,\n properties: Object,\n type: 'Point' | 'LineString' | 'Polygon',\n id?: any\n|};\n\nexport type SortKeyRange = {\n sortKey: number,\n symbolInstanceStart: number,\n symbolInstanceEnd: number\n};\n\n// Opacity arrays are frequently updated but don't contain a lot of information, so we pack them\n// tight. Each Uint32 is actually four duplicate Uint8s for the four corners of a glyph\n// 7 bits are for the current opacity, and the lowest bit is the target opacity\n\n// actually defined in symbol_attributes.js\n// const placementOpacityAttributes = [\n// { name: 'a_fade_opacity', components: 1, type: 'Uint32' }\n// ];\nconst shaderOpacityAttributes = [\n {name: 'a_fade_opacity', components: 1, type: 'Uint8', offset: 0}\n];\n\nfunction addVertex(array, anchorX, anchorY, ox, oy, tx, ty, sizeVertex, isSDF: boolean, pixelOffsetX, pixelOffsetY, minFontScaleX, minFontScaleY) {\n const aSizeX = sizeVertex ? Math.min(MAX_PACKED_SIZE, Math.round(sizeVertex[0])) : 0;\n const aSizeY = sizeVertex ? Math.min(MAX_PACKED_SIZE, Math.round(sizeVertex[1])) : 0;\n array.emplaceBack(\n // a_pos_offset\n anchorX,\n anchorY,\n Math.round(ox * 32),\n Math.round(oy * 32),\n\n // a_data\n tx, // x coordinate of symbol on glyph atlas texture\n ty, // y coordinate of symbol on glyph atlas texture\n (aSizeX << 1) + (isSDF ? 1 : 0),\n aSizeY,\n pixelOffsetX * 16,\n pixelOffsetY * 16,\n minFontScaleX * 256,\n minFontScaleY * 256\n );\n}\n\nfunction addDynamicAttributes(dynamicLayoutVertexArray: StructArray, p: Point, angle: number) {\n dynamicLayoutVertexArray.emplaceBack(p.x, p.y, angle);\n dynamicLayoutVertexArray.emplaceBack(p.x, p.y, angle);\n dynamicLayoutVertexArray.emplaceBack(p.x, p.y, angle);\n dynamicLayoutVertexArray.emplaceBack(p.x, p.y, angle);\n}\n\nfunction containsRTLText(formattedText: Formatted): boolean {\n for (const section of formattedText.sections) {\n if (stringContainsRTLText(section.text)) {\n return true;\n }\n }\n return false;\n}\n\nexport class SymbolBuffers {\n layoutVertexArray: SymbolLayoutArray;\n layoutVertexBuffer: VertexBuffer;\n\n indexArray: TriangleIndexArray;\n indexBuffer: IndexBuffer;\n\n programConfigurations: ProgramConfigurationSet;\n segments: SegmentVector;\n\n dynamicLayoutVertexArray: SymbolDynamicLayoutArray;\n dynamicLayoutVertexBuffer: VertexBuffer;\n\n opacityVertexArray: SymbolOpacityArray;\n opacityVertexBuffer: VertexBuffer;\n\n collisionVertexArray: CollisionVertexArray;\n collisionVertexBuffer: VertexBuffer;\n\n placedSymbolArray: PlacedSymbolArray;\n\n constructor(programConfigurations: ProgramConfigurationSet) {\n this.layoutVertexArray = new SymbolLayoutArray();\n this.indexArray = new TriangleIndexArray();\n this.programConfigurations = programConfigurations;\n this.segments = new SegmentVector();\n this.dynamicLayoutVertexArray = new SymbolDynamicLayoutArray();\n this.opacityVertexArray = new SymbolOpacityArray();\n this.placedSymbolArray = new PlacedSymbolArray();\n }\n\n isEmpty() {\n return this.layoutVertexArray.length === 0 &&\n this.indexArray.length === 0 &&\n this.dynamicLayoutVertexArray.length === 0 &&\n this.opacityVertexArray.length === 0;\n }\n\n upload(context: Context, dynamicIndexBuffer: boolean, upload?: boolean, update?: boolean) {\n if (this.isEmpty()) {\n return;\n }\n\n if (upload) {\n this.layoutVertexBuffer = context.createVertexBuffer(this.layoutVertexArray, symbolLayoutAttributes.members);\n this.indexBuffer = context.createIndexBuffer(this.indexArray, dynamicIndexBuffer);\n this.dynamicLayoutVertexBuffer = context.createVertexBuffer(this.dynamicLayoutVertexArray, dynamicLayoutAttributes.members, true);\n this.opacityVertexBuffer = context.createVertexBuffer(this.opacityVertexArray, shaderOpacityAttributes, true);\n // This is a performance hack so that we can write to opacityVertexArray with uint32s\n // even though the shaders read uint8s\n this.opacityVertexBuffer.itemSize = 1;\n }\n if (upload || update) {\n this.programConfigurations.upload(context);\n }\n }\n\n destroy() {\n if (!this.layoutVertexBuffer) return;\n this.layoutVertexBuffer.destroy();\n this.indexBuffer.destroy();\n this.programConfigurations.destroy();\n this.segments.destroy();\n this.dynamicLayoutVertexBuffer.destroy();\n this.opacityVertexBuffer.destroy();\n }\n}\n\nregister('SymbolBuffers', SymbolBuffers);\n\nclass CollisionBuffers {\n layoutVertexArray: StructArray;\n layoutAttributes: Array;\n layoutVertexBuffer: VertexBuffer;\n\n indexArray: TriangleIndexArray | LineIndexArray;\n indexBuffer: IndexBuffer;\n\n segments: SegmentVector;\n\n collisionVertexArray: CollisionVertexArray;\n collisionVertexBuffer: VertexBuffer;\n\n constructor(LayoutArray: Class,\n layoutAttributes: Array,\n IndexArray: Class) {\n this.layoutVertexArray = new LayoutArray();\n this.layoutAttributes = layoutAttributes;\n this.indexArray = new IndexArray();\n this.segments = new SegmentVector();\n this.collisionVertexArray = new CollisionVertexArray();\n }\n\n upload(context: Context) {\n this.layoutVertexBuffer = context.createVertexBuffer(this.layoutVertexArray, this.layoutAttributes);\n this.indexBuffer = context.createIndexBuffer(this.indexArray);\n this.collisionVertexBuffer = context.createVertexBuffer(this.collisionVertexArray, collisionVertexAttributes.members, true);\n }\n\n destroy() {\n if (!this.layoutVertexBuffer) return;\n this.layoutVertexBuffer.destroy();\n this.indexBuffer.destroy();\n this.segments.destroy();\n this.collisionVertexBuffer.destroy();\n }\n}\n\nregister('CollisionBuffers', CollisionBuffers);\n\n/**\n * Unlike other buckets, which simply implement #addFeature with type-specific\n * logic for (essentially) triangulating feature geometries, SymbolBucket\n * requires specialized behavior:\n *\n * 1. WorkerTile#parse(), the logical owner of the bucket creation process,\n * calls SymbolBucket#populate(), which resolves text and icon tokens on\n * each feature, adds each glyphs and symbols needed to the passed-in\n * collections options.glyphDependencies and options.iconDependencies, and\n * stores the feature data for use in subsequent step (this.features).\n *\n * 2. WorkerTile asynchronously requests from the main thread all of the glyphs\n * and icons needed (by this bucket and any others). When glyphs and icons\n * have been received, the WorkerTile creates a CollisionIndex and invokes:\n *\n * 3. performSymbolLayout(bucket, stacks, icons) perform texts shaping and\n * layout on a Symbol Bucket. This step populates:\n * `this.symbolInstances`: metadata on generated symbols\n * `this.collisionBoxArray`: collision data for use by foreground\n * `this.text`: SymbolBuffers for text symbols\n * `this.icons`: SymbolBuffers for icons\n * `this.iconCollisionBox`: Debug SymbolBuffers for icon collision boxes\n * `this.textCollisionBox`: Debug SymbolBuffers for text collision boxes\n * The results are sent to the foreground for rendering\n *\n * 4. performSymbolPlacement(bucket, collisionIndex) is run on the foreground,\n * and uses the CollisionIndex along with current camera settings to determine\n * which symbols can actually show on the map. Collided symbols are hidden\n * using a dynamic \"OpacityVertexArray\".\n *\n * @private\n */\nclass SymbolBucket implements Bucket {\n static MAX_GLYPHS: number;\n static addDynamicAttributes: typeof addDynamicAttributes;\n\n collisionBoxArray: CollisionBoxArray;\n zoom: number;\n overscaling: number;\n layers: Array;\n layerIds: Array;\n stateDependentLayers: Array;\n stateDependentLayerIds: Array;\n\n index: number;\n sdfIcons: boolean;\n iconsInText: boolean;\n iconsNeedLinear: boolean;\n bucketInstanceId: number;\n justReloaded: boolean;\n hasPattern: boolean;\n\n textSizeData: SizeData;\n iconSizeData: SizeData;\n\n glyphOffsetArray: GlyphOffsetArray;\n lineVertexArray: SymbolLineVertexArray;\n features: Array;\n symbolInstances: SymbolInstanceArray;\n collisionArrays: Array;\n sortKeyRanges: Array;\n pixelRatio: number;\n tilePixelRatio: number;\n compareText: {[_: string]: Array};\n fadeStartTime: number;\n sortFeaturesByKey: boolean;\n sortFeaturesByY: boolean;\n canOverlap: boolean;\n sortedAngle: number;\n featureSortOrder: Array;\n\n collisionCircleArray: Array;\n placementInvProjMatrix: mat4;\n placementViewportMatrix: mat4;\n\n text: SymbolBuffers;\n icon: SymbolBuffers;\n textCollisionBox: CollisionBuffers;\n iconCollisionBox: CollisionBuffers;\n uploaded: boolean;\n sourceLayerIndex: number;\n sourceID: string;\n symbolInstanceIndexes: Array;\n writingModes: Array;\n allowVerticalPlacement: boolean;\n hasRTLText: boolean;\n\n constructor(options: BucketParameters) {\n this.collisionBoxArray = options.collisionBoxArray;\n this.zoom = options.zoom;\n this.overscaling = options.overscaling;\n this.layers = options.layers;\n this.layerIds = this.layers.map(layer => layer.id);\n this.index = options.index;\n this.pixelRatio = options.pixelRatio;\n this.sourceLayerIndex = options.sourceLayerIndex;\n this.hasPattern = false;\n this.hasRTLText = false;\n this.sortKeyRanges = [];\n\n this.collisionCircleArray = [];\n this.placementInvProjMatrix = mat4.identity([]);\n this.placementViewportMatrix = mat4.identity([]);\n\n const layer = this.layers[0];\n const unevaluatedLayoutValues = layer._unevaluatedLayout._values;\n\n this.textSizeData = getSizeData(this.zoom, unevaluatedLayoutValues['text-size']);\n this.iconSizeData = getSizeData(this.zoom, unevaluatedLayoutValues['icon-size']);\n\n const layout = this.layers[0].layout;\n const sortKey = layout.get('symbol-sort-key');\n const zOrder = layout.get('symbol-z-order');\n this.canOverlap =\n layout.get('text-allow-overlap') ||\n layout.get('icon-allow-overlap') ||\n layout.get('text-ignore-placement') ||\n layout.get('icon-ignore-placement');\n this.sortFeaturesByKey = zOrder !== 'viewport-y' && sortKey.constantOr(1) !== undefined;\n const zOrderByViewportY = zOrder === 'viewport-y' || (zOrder === 'auto' && !this.sortFeaturesByKey);\n this.sortFeaturesByY = zOrderByViewportY && this.canOverlap;\n\n if (layout.get('symbol-placement') === 'point') {\n this.writingModes = layout.get('text-writing-mode').map(wm => WritingMode[wm]);\n }\n\n this.stateDependentLayerIds = this.layers.filter((l) => l.isStateDependent()).map((l) => l.id);\n\n this.sourceID = options.sourceID;\n }\n\n createArrays() {\n this.text = new SymbolBuffers(new ProgramConfigurationSet(this.layers, this.zoom, property => /^text/.test(property)));\n this.icon = new SymbolBuffers(new ProgramConfigurationSet(this.layers, this.zoom, property => /^icon/.test(property)));\n\n this.glyphOffsetArray = new GlyphOffsetArray();\n this.lineVertexArray = new SymbolLineVertexArray();\n this.symbolInstances = new SymbolInstanceArray();\n }\n\n calculateGlyphDependencies(text: string, stack: {[_: number]: boolean}, textAlongLine: boolean, allowVerticalPlacement: boolean, doesAllowVerticalWritingMode: boolean) {\n for (let i = 0; i < text.length; i++) {\n stack[text.charCodeAt(i)] = true;\n if ((textAlongLine || allowVerticalPlacement) && doesAllowVerticalWritingMode) {\n const verticalChar = verticalizedCharacterMap[text.charAt(i)];\n if (verticalChar) {\n stack[verticalChar.charCodeAt(0)] = true;\n }\n }\n }\n }\n\n populate(features: Array, options: PopulateParameters, canonical: CanonicalTileID) {\n const layer = this.layers[0];\n const layout = layer.layout;\n\n const textFont = layout.get('text-font');\n const textField = layout.get('text-field');\n const iconImage = layout.get('icon-image');\n const hasText =\n (textField.value.kind !== 'constant' ||\n (textField.value.value instanceof Formatted && !textField.value.value.isEmpty()) ||\n textField.value.value.toString().length > 0) &&\n (textFont.value.kind !== 'constant' || textFont.value.value.length > 0);\n // we should always resolve the icon-image value if the property was defined in the style\n // this allows us to fire the styleimagemissing event if image evaluation returns null\n // the only way to distinguish between null returned from a coalesce statement with no valid images\n // and null returned because icon-image wasn't defined is to check whether or not iconImage.parameters is an empty object\n const hasIcon = iconImage.value.kind !== 'constant' || !!iconImage.value.value || Object.keys(iconImage.parameters).length > 0;\n const symbolSortKey = layout.get('symbol-sort-key');\n\n this.features = [];\n\n if (!hasText && !hasIcon) {\n return;\n }\n\n const icons = options.iconDependencies;\n const stacks = options.glyphDependencies;\n const availableImages = options.availableImages;\n const globalProperties = new EvaluationParameters(this.zoom);\n\n for (const {feature, id, index, sourceLayerIndex} of features) {\n\n const needGeometry = layer._featureFilter.needGeometry;\n const evaluationFeature = toEvaluationFeature(feature, needGeometry);\n if (!layer._featureFilter.filter(globalProperties, evaluationFeature, canonical)) {\n continue;\n }\n\n if (!needGeometry) evaluationFeature.geometry = loadGeometry(feature);\n\n let text: Formatted | void;\n if (hasText) {\n // Expression evaluation will automatically coerce to Formatted\n // but plain string token evaluation skips that pathway so do the\n // conversion here.\n const resolvedTokens = layer.getValueAndResolveTokens('text-field', evaluationFeature, canonical, availableImages);\n const formattedText = Formatted.factory(resolvedTokens);\n if (containsRTLText(formattedText)) {\n this.hasRTLText = true;\n }\n if (\n !this.hasRTLText || // non-rtl text so can proceed safely\n getRTLTextPluginStatus() === 'unavailable' || // We don't intend to lazy-load the rtl text plugin, so proceed with incorrect shaping\n this.hasRTLText && globalRTLTextPlugin.isParsed() // Use the rtlText plugin to shape text\n ) {\n text = transformText(formattedText, layer, evaluationFeature);\n }\n }\n\n let icon: ?ResolvedImage;\n if (hasIcon) {\n // Expression evaluation will automatically coerce to Image\n // but plain string token evaluation skips that pathway so do the\n // conversion here.\n const resolvedTokens = layer.getValueAndResolveTokens('icon-image', evaluationFeature, canonical, availableImages);\n if (resolvedTokens instanceof ResolvedImage) {\n icon = resolvedTokens;\n } else {\n icon = ResolvedImage.fromString(resolvedTokens);\n }\n }\n\n if (!text && !icon) {\n continue;\n }\n const sortKey = this.sortFeaturesByKey ?\n symbolSortKey.evaluate(evaluationFeature, {}, canonical) :\n undefined;\n\n const symbolFeature: SymbolFeature = {\n id,\n text,\n icon,\n index,\n sourceLayerIndex,\n geometry: evaluationFeature.geometry,\n properties: feature.properties,\n type: vectorTileFeatureTypes[feature.type],\n sortKey\n };\n this.features.push(symbolFeature);\n\n if (icon) {\n icons[icon.name] = true;\n }\n\n if (text) {\n const fontStack = textFont.evaluate(evaluationFeature, {}, canonical).join(',');\n const textAlongLine = layout.get('text-rotation-alignment') === 'map' && layout.get('symbol-placement') !== 'point';\n this.allowVerticalPlacement = this.writingModes && this.writingModes.indexOf(WritingMode.vertical) >= 0;\n for (const section of text.sections) {\n if (!section.image) {\n const doesAllowVerticalWritingMode = allowsVerticalWritingMode(text.toString());\n const sectionFont = section.fontStack || fontStack;\n const sectionStack = stacks[sectionFont] = stacks[sectionFont] || {};\n this.calculateGlyphDependencies(section.text, sectionStack, textAlongLine, this.allowVerticalPlacement, doesAllowVerticalWritingMode);\n } else {\n // Add section image to the list of dependencies.\n icons[section.image.name] = true;\n }\n }\n }\n }\n\n if (layout.get('symbol-placement') === 'line') {\n // Merge adjacent lines with the same text to improve labelling.\n // It's better to place labels on one long line than on many short segments.\n this.features = mergeLines(this.features);\n }\n\n if (this.sortFeaturesByKey) {\n this.features.sort((a, b) => {\n // a.sortKey is always a number when sortFeaturesByKey is true\n return ((a.sortKey: any): number) - ((b.sortKey: any): number);\n });\n }\n }\n\n update(states: FeatureStates, vtLayer: VectorTileLayer, imagePositions: {[_: string]: ImagePosition}) {\n if (!this.stateDependentLayers.length) return;\n this.text.programConfigurations.updatePaintArrays(states, vtLayer, this.layers, imagePositions);\n this.icon.programConfigurations.updatePaintArrays(states, vtLayer, this.layers, imagePositions);\n }\n\n isEmpty() {\n // When the bucket encounters only rtl-text but the plugin isnt loaded, no symbol instances will be created.\n // In order for the bucket to be serialized, and not discarded as an empty bucket both checks are necessary.\n return this.symbolInstances.length === 0 && !this.hasRTLText;\n }\n\n uploadPending() {\n return !this.uploaded || this.text.programConfigurations.needsUpload || this.icon.programConfigurations.needsUpload;\n }\n\n upload(context: Context) {\n if (!this.uploaded && this.hasDebugData()) {\n this.textCollisionBox.upload(context);\n this.iconCollisionBox.upload(context);\n }\n this.text.upload(context, this.sortFeaturesByY, !this.uploaded, this.text.programConfigurations.needsUpload);\n this.icon.upload(context, this.sortFeaturesByY, !this.uploaded, this.icon.programConfigurations.needsUpload);\n this.uploaded = true;\n }\n\n destroyDebugData() {\n this.textCollisionBox.destroy();\n this.iconCollisionBox.destroy();\n }\n\n destroy() {\n this.text.destroy();\n this.icon.destroy();\n\n if (this.hasDebugData()) {\n this.destroyDebugData();\n }\n }\n\n addToLineVertexArray(anchor: Anchor, line: any) {\n const lineStartIndex = this.lineVertexArray.length;\n if (anchor.segment !== undefined) {\n let sumForwardLength = anchor.dist(line[anchor.segment + 1]);\n let sumBackwardLength = anchor.dist(line[anchor.segment]);\n const vertices = {};\n for (let i = anchor.segment + 1; i < line.length; i++) {\n vertices[i] = {x: line[i].x, y: line[i].y, tileUnitDistanceFromAnchor: sumForwardLength};\n if (i < line.length - 1) {\n sumForwardLength += line[i + 1].dist(line[i]);\n }\n }\n for (let i = anchor.segment || 0; i >= 0; i--) {\n vertices[i] = {x: line[i].x, y: line[i].y, tileUnitDistanceFromAnchor: sumBackwardLength};\n if (i > 0) {\n sumBackwardLength += line[i - 1].dist(line[i]);\n }\n }\n for (let i = 0; i < line.length; i++) {\n const vertex = vertices[i];\n this.lineVertexArray.emplaceBack(vertex.x, vertex.y, vertex.tileUnitDistanceFromAnchor);\n }\n }\n return {\n lineStartIndex,\n lineLength: this.lineVertexArray.length - lineStartIndex\n };\n }\n\n addSymbols(arrays: SymbolBuffers,\n quads: Array,\n sizeVertex: any,\n lineOffset: [number, number],\n alongLine: boolean,\n feature: SymbolFeature,\n writingMode: any,\n labelAnchor: Anchor,\n lineStartIndex: number,\n lineLength: number,\n associatedIconIndex: number,\n canonical: CanonicalTileID) {\n const indexArray = arrays.indexArray;\n const layoutVertexArray = arrays.layoutVertexArray;\n\n const segment = arrays.segments.prepareSegment(4 * quads.length, layoutVertexArray, indexArray, this.canOverlap ? feature.sortKey : undefined);\n const glyphOffsetArrayStart = this.glyphOffsetArray.length;\n const vertexStartIndex = segment.vertexLength;\n\n const angle = (this.allowVerticalPlacement && writingMode === WritingMode.vertical) ? Math.PI / 2 : 0;\n\n const sections = feature.text && feature.text.sections;\n\n for (let i = 0; i < quads.length; i++) {\n const {tl, tr, bl, br, tex, pixelOffsetTL, pixelOffsetBR, minFontScaleX, minFontScaleY, glyphOffset, isSDF, sectionIndex} = quads[i];\n const index = segment.vertexLength;\n\n const y = glyphOffset[1];\n addVertex(layoutVertexArray, labelAnchor.x, labelAnchor.y, tl.x, y + tl.y, tex.x, tex.y, sizeVertex, isSDF, pixelOffsetTL.x, pixelOffsetTL.y, minFontScaleX, minFontScaleY);\n addVertex(layoutVertexArray, labelAnchor.x, labelAnchor.y, tr.x, y + tr.y, tex.x + tex.w, tex.y, sizeVertex, isSDF, pixelOffsetBR.x, pixelOffsetTL.y, minFontScaleX, minFontScaleY);\n addVertex(layoutVertexArray, labelAnchor.x, labelAnchor.y, bl.x, y + bl.y, tex.x, tex.y + tex.h, sizeVertex, isSDF, pixelOffsetTL.x, pixelOffsetBR.y, minFontScaleX, minFontScaleY);\n addVertex(layoutVertexArray, labelAnchor.x, labelAnchor.y, br.x, y + br.y, tex.x + tex.w, tex.y + tex.h, sizeVertex, isSDF, pixelOffsetBR.x, pixelOffsetBR.y, minFontScaleX, minFontScaleY);\n\n addDynamicAttributes(arrays.dynamicLayoutVertexArray, labelAnchor, angle);\n\n indexArray.emplaceBack(index, index + 1, index + 2);\n indexArray.emplaceBack(index + 1, index + 2, index + 3);\n\n segment.vertexLength += 4;\n segment.primitiveLength += 2;\n\n this.glyphOffsetArray.emplaceBack(glyphOffset[0]);\n\n if (i === quads.length - 1 || sectionIndex !== quads[i + 1].sectionIndex) {\n arrays.programConfigurations.populatePaintArrays(layoutVertexArray.length, feature, feature.index, {}, canonical, sections && sections[sectionIndex]);\n }\n }\n\n arrays.placedSymbolArray.emplaceBack(labelAnchor.x, labelAnchor.y,\n glyphOffsetArrayStart, this.glyphOffsetArray.length - glyphOffsetArrayStart, vertexStartIndex,\n lineStartIndex, lineLength, (labelAnchor.segment: any),\n sizeVertex ? sizeVertex[0] : 0, sizeVertex ? sizeVertex[1] : 0,\n lineOffset[0], lineOffset[1],\n writingMode,\n // placedOrientation is null initially; will be updated to horizontal(1)/vertical(2) if placed\n 0,\n (false: any),\n // The crossTileID is only filled/used on the foreground for dynamic text anchors\n 0,\n associatedIconIndex\n );\n }\n\n _addCollisionDebugVertex(layoutVertexArray: StructArray, collisionVertexArray: StructArray, point: Point, anchorX: number, anchorY: number, extrude: Point) {\n collisionVertexArray.emplaceBack(0, 0);\n return layoutVertexArray.emplaceBack(\n // pos\n point.x,\n point.y,\n // a_anchor_pos\n anchorX,\n anchorY,\n // extrude\n Math.round(extrude.x),\n Math.round(extrude.y));\n }\n\n addCollisionDebugVertices(x1: number, y1: number, x2: number, y2: number, arrays: CollisionBuffers, boxAnchorPoint: Point, symbolInstance: SymbolInstance) {\n const segment = arrays.segments.prepareSegment(4, arrays.layoutVertexArray, arrays.indexArray);\n const index = segment.vertexLength;\n\n const layoutVertexArray = arrays.layoutVertexArray;\n const collisionVertexArray = arrays.collisionVertexArray;\n\n const anchorX = symbolInstance.anchorX;\n const anchorY = symbolInstance.anchorY;\n\n this._addCollisionDebugVertex(layoutVertexArray, collisionVertexArray, boxAnchorPoint, anchorX, anchorY, new Point(x1, y1));\n this._addCollisionDebugVertex(layoutVertexArray, collisionVertexArray, boxAnchorPoint, anchorX, anchorY, new Point(x2, y1));\n this._addCollisionDebugVertex(layoutVertexArray, collisionVertexArray, boxAnchorPoint, anchorX, anchorY, new Point(x2, y2));\n this._addCollisionDebugVertex(layoutVertexArray, collisionVertexArray, boxAnchorPoint, anchorX, anchorY, new Point(x1, y2));\n\n segment.vertexLength += 4;\n\n const indexArray: LineIndexArray = (arrays.indexArray: any);\n indexArray.emplaceBack(index, index + 1);\n indexArray.emplaceBack(index + 1, index + 2);\n indexArray.emplaceBack(index + 2, index + 3);\n indexArray.emplaceBack(index + 3, index);\n\n segment.primitiveLength += 4;\n }\n\n addDebugCollisionBoxes(startIndex: number, endIndex: number, symbolInstance: SymbolInstance, isText: boolean) {\n for (let b = startIndex; b < endIndex; b++) {\n const box: CollisionBox = (this.collisionBoxArray.get(b): any);\n const x1 = box.x1;\n const y1 = box.y1;\n const x2 = box.x2;\n const y2 = box.y2;\n\n this.addCollisionDebugVertices(x1, y1, x2, y2,\n isText ? this.textCollisionBox : this.iconCollisionBox,\n box.anchorPoint, symbolInstance);\n }\n }\n\n generateCollisionDebugBuffers() {\n if (this.hasDebugData()) {\n this.destroyDebugData();\n }\n\n this.textCollisionBox = new CollisionBuffers(CollisionBoxLayoutArray, collisionBoxLayout.members, LineIndexArray);\n this.iconCollisionBox = new CollisionBuffers(CollisionBoxLayoutArray, collisionBoxLayout.members, LineIndexArray);\n\n for (let i = 0; i < this.symbolInstances.length; i++) {\n const symbolInstance = this.symbolInstances.get(i);\n this.addDebugCollisionBoxes(symbolInstance.textBoxStartIndex, symbolInstance.textBoxEndIndex, symbolInstance, true);\n this.addDebugCollisionBoxes(symbolInstance.verticalTextBoxStartIndex, symbolInstance.verticalTextBoxEndIndex, symbolInstance, true);\n this.addDebugCollisionBoxes(symbolInstance.iconBoxStartIndex, symbolInstance.iconBoxEndIndex, symbolInstance, false);\n this.addDebugCollisionBoxes(symbolInstance.verticalIconBoxStartIndex, symbolInstance.verticalIconBoxEndIndex, symbolInstance, false);\n }\n }\n\n // These flat arrays are meant to be quicker to iterate over than the source\n // CollisionBoxArray\n _deserializeCollisionBoxesForSymbol(collisionBoxArray: CollisionBoxArray,\n textStartIndex: number, textEndIndex: number,\n verticalTextStartIndex: number, verticalTextEndIndex: number,\n iconStartIndex: number, iconEndIndex: number,\n verticalIconStartIndex: number, verticalIconEndIndex: number): CollisionArrays {\n\n const collisionArrays = {};\n for (let k = textStartIndex; k < textEndIndex; k++) {\n const box: CollisionBox = (collisionBoxArray.get(k): any);\n collisionArrays.textBox = {x1: box.x1, y1: box.y1, x2: box.x2, y2: box.y2, anchorPointX: box.anchorPointX, anchorPointY: box.anchorPointY};\n collisionArrays.textFeatureIndex = box.featureIndex;\n break; // Only one box allowed per instance\n }\n for (let k = verticalTextStartIndex; k < verticalTextEndIndex; k++) {\n const box: CollisionBox = (collisionBoxArray.get(k): any);\n collisionArrays.verticalTextBox = {x1: box.x1, y1: box.y1, x2: box.x2, y2: box.y2, anchorPointX: box.anchorPointX, anchorPointY: box.anchorPointY};\n collisionArrays.verticalTextFeatureIndex = box.featureIndex;\n break; // Only one box allowed per instance\n }\n for (let k = iconStartIndex; k < iconEndIndex; k++) {\n // An icon can only have one box now, so this indexing is a bit vestigial...\n const box: CollisionBox = (collisionBoxArray.get(k): any);\n collisionArrays.iconBox = {x1: box.x1, y1: box.y1, x2: box.x2, y2: box.y2, anchorPointX: box.anchorPointX, anchorPointY: box.anchorPointY};\n collisionArrays.iconFeatureIndex = box.featureIndex;\n break; // Only one box allowed per instance\n }\n for (let k = verticalIconStartIndex; k < verticalIconEndIndex; k++) {\n // An icon can only have one box now, so this indexing is a bit vestigial...\n const box: CollisionBox = (collisionBoxArray.get(k): any);\n collisionArrays.verticalIconBox = {x1: box.x1, y1: box.y1, x2: box.x2, y2: box.y2, anchorPointX: box.anchorPointX, anchorPointY: box.anchorPointY};\n collisionArrays.verticalIconFeatureIndex = box.featureIndex;\n break; // Only one box allowed per instance\n }\n return collisionArrays;\n }\n\n deserializeCollisionBoxes(collisionBoxArray: CollisionBoxArray) {\n this.collisionArrays = [];\n for (let i = 0; i < this.symbolInstances.length; i++) {\n const symbolInstance = this.symbolInstances.get(i);\n this.collisionArrays.push(this._deserializeCollisionBoxesForSymbol(\n collisionBoxArray,\n symbolInstance.textBoxStartIndex,\n symbolInstance.textBoxEndIndex,\n symbolInstance.verticalTextBoxStartIndex,\n symbolInstance.verticalTextBoxEndIndex,\n symbolInstance.iconBoxStartIndex,\n symbolInstance.iconBoxEndIndex,\n symbolInstance.verticalIconBoxStartIndex,\n symbolInstance.verticalIconBoxEndIndex\n ));\n }\n }\n\n hasTextData() {\n return this.text.segments.get().length > 0;\n }\n\n hasIconData() {\n return this.icon.segments.get().length > 0;\n }\n\n hasDebugData() {\n return this.textCollisionBox && this.iconCollisionBox;\n }\n\n hasTextCollisionBoxData() {\n return this.hasDebugData() && this.textCollisionBox.segments.get().length > 0;\n }\n\n hasIconCollisionBoxData() {\n return this.hasDebugData() && this.iconCollisionBox.segments.get().length > 0;\n }\n\n addIndicesForPlacedSymbol(iconOrText: SymbolBuffers, placedSymbolIndex: number) {\n const placedSymbol = iconOrText.placedSymbolArray.get(placedSymbolIndex);\n\n const endIndex = placedSymbol.vertexStartIndex + placedSymbol.numGlyphs * 4;\n for (let vertexIndex = placedSymbol.vertexStartIndex; vertexIndex < endIndex; vertexIndex += 4) {\n iconOrText.indexArray.emplaceBack(vertexIndex, vertexIndex + 1, vertexIndex + 2);\n iconOrText.indexArray.emplaceBack(vertexIndex + 1, vertexIndex + 2, vertexIndex + 3);\n }\n }\n\n getSortedSymbolIndexes(angle: number) {\n if (this.sortedAngle === angle && this.symbolInstanceIndexes !== undefined) {\n return this.symbolInstanceIndexes;\n }\n const sin = Math.sin(angle);\n const cos = Math.cos(angle);\n const rotatedYs = [];\n const featureIndexes = [];\n const result = [];\n\n for (let i = 0; i < this.symbolInstances.length; ++i) {\n result.push(i);\n const symbolInstance = this.symbolInstances.get(i);\n rotatedYs.push(Math.round(sin * symbolInstance.anchorX + cos * symbolInstance.anchorY) | 0);\n featureIndexes.push(symbolInstance.featureIndex);\n }\n\n result.sort((aIndex, bIndex) => {\n return (rotatedYs[aIndex] - rotatedYs[bIndex]) ||\n (featureIndexes[bIndex] - featureIndexes[aIndex]);\n });\n\n return result;\n }\n\n addToSortKeyRanges(symbolInstanceIndex: number, sortKey: number) {\n const last = this.sortKeyRanges[this.sortKeyRanges.length - 1];\n if (last && last.sortKey === sortKey) {\n last.symbolInstanceEnd = symbolInstanceIndex + 1;\n } else {\n this.sortKeyRanges.push({\n sortKey,\n symbolInstanceStart: symbolInstanceIndex,\n symbolInstanceEnd: symbolInstanceIndex + 1\n });\n }\n }\n\n sortFeatures(angle: number) {\n if (!this.sortFeaturesByY) return;\n if (this.sortedAngle === angle) return;\n\n // The current approach to sorting doesn't sort across segments so don't try.\n // Sorting within segments separately seemed not to be worth the complexity.\n if (this.text.segments.get().length > 1 || this.icon.segments.get().length > 1) return;\n\n // If the symbols are allowed to overlap sort them by their vertical screen position.\n // The index array buffer is rewritten to reference the (unchanged) vertices in the\n // sorted order.\n\n // To avoid sorting the actual symbolInstance array we sort an array of indexes.\n this.symbolInstanceIndexes = this.getSortedSymbolIndexes(angle);\n this.sortedAngle = angle;\n\n this.text.indexArray.clear();\n this.icon.indexArray.clear();\n\n this.featureSortOrder = [];\n\n for (const i of this.symbolInstanceIndexes) {\n const symbolInstance = this.symbolInstances.get(i);\n this.featureSortOrder.push(symbolInstance.featureIndex);\n\n [\n symbolInstance.rightJustifiedTextSymbolIndex,\n symbolInstance.centerJustifiedTextSymbolIndex,\n symbolInstance.leftJustifiedTextSymbolIndex\n ].forEach((index, i, array) => {\n // Only add a given index the first time it shows up,\n // to avoid duplicate opacity entries when multiple justifications\n // share the same glyphs.\n if (index >= 0 && array.indexOf(index) === i) {\n this.addIndicesForPlacedSymbol(this.text, index);\n }\n });\n\n if (symbolInstance.verticalPlacedTextSymbolIndex >= 0) {\n this.addIndicesForPlacedSymbol(this.text, symbolInstance.verticalPlacedTextSymbolIndex);\n }\n\n if (symbolInstance.placedIconSymbolIndex >= 0) {\n this.addIndicesForPlacedSymbol(this.icon, symbolInstance.placedIconSymbolIndex);\n }\n\n if (symbolInstance.verticalPlacedIconSymbolIndex >= 0) {\n this.addIndicesForPlacedSymbol(this.icon, symbolInstance.verticalPlacedIconSymbolIndex);\n }\n }\n\n if (this.text.indexBuffer) this.text.indexBuffer.updateData(this.text.indexArray);\n if (this.icon.indexBuffer) this.icon.indexBuffer.updateData(this.icon.indexArray);\n }\n}\n\nregister('SymbolBucket', SymbolBucket, {\n omit: ['layers', 'collisionBoxArray', 'features', 'compareText']\n});\n\n// this constant is based on the size of StructArray indexes used in a symbol\n// bucket--namely, glyphOffsetArrayStart\n// eg the max valid UInt16 is 65,535\n// See https://github.com/mapbox/mapbox-gl-js/issues/2907 for motivation\n// lineStartIndex and textBoxStartIndex could potentially be concerns\n// but we expect there to be many fewer boxes/lines than glyphs\nSymbolBucket.MAX_GLYPHS = 65535;\n\nSymbolBucket.addDynamicAttributes = addDynamicAttributes;\n\nexport default SymbolBucket;\nexport {addDynamicAttributes};\n", "// @flow\n\nimport type {SymbolFeature} from '../data/bucket/symbol_bucket';\n\nexport default function (features: Array): Array {\n const leftIndex: {[_: string]: number} = {};\n const rightIndex: {[_: string]: number} = {};\n const mergedFeatures = [];\n let mergedIndex = 0;\n\n function add(k) {\n mergedFeatures.push(features[k]);\n mergedIndex++;\n }\n\n function mergeFromRight(leftKey: string, rightKey: string, geom) {\n const i = rightIndex[leftKey];\n delete rightIndex[leftKey];\n rightIndex[rightKey] = i;\n\n mergedFeatures[i].geometry[0].pop();\n mergedFeatures[i].geometry[0] = mergedFeatures[i].geometry[0].concat(geom[0]);\n return i;\n }\n\n function mergeFromLeft(leftKey: string, rightKey: string, geom) {\n const i = leftIndex[rightKey];\n delete leftIndex[rightKey];\n leftIndex[leftKey] = i;\n\n mergedFeatures[i].geometry[0].shift();\n mergedFeatures[i].geometry[0] = geom[0].concat(mergedFeatures[i].geometry[0]);\n return i;\n }\n\n function getKey(text, geom, onRight) {\n const point = onRight ? geom[0][geom[0].length - 1] : geom[0][0];\n return `${text}:${point.x}:${point.y}`;\n }\n\n for (let k = 0; k < features.length; k++) {\n const feature = features[k];\n const geom = feature.geometry;\n const text = feature.text ? feature.text.toString() : null;\n\n if (!text) {\n add(k);\n continue;\n }\n\n const leftKey = getKey(text, geom),\n rightKey = getKey(text, geom, true);\n\n if ((leftKey in rightIndex) && (rightKey in leftIndex) && (rightIndex[leftKey] !== leftIndex[rightKey])) {\n // found lines with the same text adjacent to both ends of the current line, merge all three\n const j = mergeFromLeft(leftKey, rightKey, geom);\n const i = mergeFromRight(leftKey, rightKey, mergedFeatures[j].geometry);\n\n delete leftIndex[leftKey];\n delete rightIndex[rightKey];\n\n rightIndex[getKey(text, mergedFeatures[i].geometry, true)] = i;\n mergedFeatures[j].geometry = (null: any);\n\n } else if (leftKey in rightIndex) {\n // found mergeable line adjacent to the start of the current line, merge\n mergeFromRight(leftKey, rightKey, geom);\n\n } else if (rightKey in leftIndex) {\n // found mergeable line adjacent to the end of the current line, merge\n mergeFromLeft(leftKey, rightKey, geom);\n\n } else {\n // no adjacent lines, add as a new item\n add(k);\n leftIndex[leftKey] = mergedIndex - 1;\n rightIndex[rightKey] = mergedIndex - 1;\n }\n }\n\n return mergedFeatures.filter((f) => f.geometry);\n}\n", "// This file is generated. Edit build/generate-style-code.js, then run `yarn run codegen`.\n// @flow\n/* eslint-disable */\n\nimport styleSpec from '../../style-spec/reference/latest';\n\nimport {\n Properties,\n DataConstantProperty,\n DataDrivenProperty,\n CrossFadedDataDrivenProperty,\n CrossFadedProperty,\n ColorRampProperty\n} from '../properties';\n\nimport type Color from '../../style-spec/util/color';\n\nimport type Formatted from '../../style-spec/expression/types/formatted';\n\nimport type ResolvedImage from '../../style-spec/expression/types/resolved_image';\n\nimport {\n ColorType\n} from '../../style-spec/expression/types';\n\nexport type LayoutProps = {|\n \"symbol-placement\": DataConstantProperty<\"point\" | \"line\" | \"line-center\">,\n \"symbol-spacing\": DataConstantProperty,\n \"symbol-avoid-edges\": DataConstantProperty,\n \"symbol-sort-key\": DataDrivenProperty,\n \"symbol-z-order\": DataConstantProperty<\"auto\" | \"viewport-y\" | \"source\">,\n \"icon-allow-overlap\": DataConstantProperty,\n \"icon-ignore-placement\": DataConstantProperty,\n \"icon-optional\": DataConstantProperty,\n \"icon-rotation-alignment\": DataConstantProperty<\"map\" | \"viewport\" | \"auto\">,\n \"icon-size\": DataDrivenProperty,\n \"icon-text-fit\": DataConstantProperty<\"none\" | \"width\" | \"height\" | \"both\">,\n \"icon-text-fit-padding\": DataConstantProperty<[number, number, number, number]>,\n \"icon-image\": DataDrivenProperty,\n \"icon-rotate\": DataDrivenProperty,\n \"icon-padding\": DataConstantProperty,\n \"icon-keep-upright\": DataConstantProperty,\n \"icon-offset\": DataDrivenProperty<[number, number]>,\n \"icon-anchor\": DataDrivenProperty<\"center\" | \"left\" | \"right\" | \"top\" | \"bottom\" | \"top-left\" | \"top-right\" | \"bottom-left\" | \"bottom-right\">,\n \"icon-pitch-alignment\": DataConstantProperty<\"map\" | \"viewport\" | \"auto\">,\n \"text-pitch-alignment\": DataConstantProperty<\"map\" | \"viewport\" | \"auto\">,\n \"text-rotation-alignment\": DataConstantProperty<\"map\" | \"viewport\" | \"auto\">,\n \"text-field\": DataDrivenProperty,\n \"text-font\": DataDrivenProperty>,\n \"text-size\": DataDrivenProperty,\n \"text-max-width\": DataDrivenProperty,\n \"text-line-height\": DataConstantProperty,\n \"text-letter-spacing\": DataDrivenProperty,\n \"text-justify\": DataDrivenProperty<\"auto\" | \"left\" | \"center\" | \"right\">,\n \"text-radial-offset\": DataDrivenProperty,\n \"text-variable-anchor\": DataConstantProperty>,\n \"text-anchor\": DataDrivenProperty<\"center\" | \"left\" | \"right\" | \"top\" | \"bottom\" | \"top-left\" | \"top-right\" | \"bottom-left\" | \"bottom-right\">,\n \"text-max-angle\": DataConstantProperty,\n \"text-writing-mode\": DataConstantProperty>,\n \"text-rotate\": DataDrivenProperty,\n \"text-padding\": DataConstantProperty,\n \"text-keep-upright\": DataConstantProperty,\n \"text-transform\": DataDrivenProperty<\"none\" | \"uppercase\" | \"lowercase\">,\n \"text-offset\": DataDrivenProperty<[number, number]>,\n \"text-allow-overlap\": DataConstantProperty,\n \"text-ignore-placement\": DataConstantProperty,\n \"text-optional\": DataConstantProperty,\n|};\n\nconst layout: Properties = new Properties({\n \"symbol-placement\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"symbol-placement\"]),\n \"symbol-spacing\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"symbol-spacing\"]),\n \"symbol-avoid-edges\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"symbol-avoid-edges\"]),\n \"symbol-sort-key\": new DataDrivenProperty(styleSpec[\"layout_symbol\"][\"symbol-sort-key\"]),\n \"symbol-z-order\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"symbol-z-order\"]),\n \"icon-allow-overlap\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"icon-allow-overlap\"]),\n \"icon-ignore-placement\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"icon-ignore-placement\"]),\n \"icon-optional\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"icon-optional\"]),\n \"icon-rotation-alignment\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"icon-rotation-alignment\"]),\n \"icon-size\": new DataDrivenProperty(styleSpec[\"layout_symbol\"][\"icon-size\"]),\n \"icon-text-fit\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"icon-text-fit\"]),\n \"icon-text-fit-padding\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"icon-text-fit-padding\"]),\n \"icon-image\": new DataDrivenProperty(styleSpec[\"layout_symbol\"][\"icon-image\"]),\n \"icon-rotate\": new DataDrivenProperty(styleSpec[\"layout_symbol\"][\"icon-rotate\"]),\n \"icon-padding\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"icon-padding\"]),\n \"icon-keep-upright\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"icon-keep-upright\"]),\n \"icon-offset\": new DataDrivenProperty(styleSpec[\"layout_symbol\"][\"icon-offset\"]),\n \"icon-anchor\": new DataDrivenProperty(styleSpec[\"layout_symbol\"][\"icon-anchor\"]),\n \"icon-pitch-alignment\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"icon-pitch-alignment\"]),\n \"text-pitch-alignment\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"text-pitch-alignment\"]),\n \"text-rotation-alignment\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"text-rotation-alignment\"]),\n \"text-field\": new DataDrivenProperty(styleSpec[\"layout_symbol\"][\"text-field\"]),\n \"text-font\": new DataDrivenProperty(styleSpec[\"layout_symbol\"][\"text-font\"]),\n \"text-size\": new DataDrivenProperty(styleSpec[\"layout_symbol\"][\"text-size\"]),\n \"text-max-width\": new DataDrivenProperty(styleSpec[\"layout_symbol\"][\"text-max-width\"]),\n \"text-line-height\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"text-line-height\"]),\n \"text-letter-spacing\": new DataDrivenProperty(styleSpec[\"layout_symbol\"][\"text-letter-spacing\"]),\n \"text-justify\": new DataDrivenProperty(styleSpec[\"layout_symbol\"][\"text-justify\"]),\n \"text-radial-offset\": new DataDrivenProperty(styleSpec[\"layout_symbol\"][\"text-radial-offset\"]),\n \"text-variable-anchor\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"text-variable-anchor\"]),\n \"text-anchor\": new DataDrivenProperty(styleSpec[\"layout_symbol\"][\"text-anchor\"]),\n \"text-max-angle\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"text-max-angle\"]),\n \"text-writing-mode\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"text-writing-mode\"]),\n \"text-rotate\": new DataDrivenProperty(styleSpec[\"layout_symbol\"][\"text-rotate\"]),\n \"text-padding\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"text-padding\"]),\n \"text-keep-upright\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"text-keep-upright\"]),\n \"text-transform\": new DataDrivenProperty(styleSpec[\"layout_symbol\"][\"text-transform\"]),\n \"text-offset\": new DataDrivenProperty(styleSpec[\"layout_symbol\"][\"text-offset\"]),\n \"text-allow-overlap\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"text-allow-overlap\"]),\n \"text-ignore-placement\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"text-ignore-placement\"]),\n \"text-optional\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"text-optional\"]),\n});\n\nexport type PaintProps = {|\n \"icon-opacity\": DataDrivenProperty,\n \"icon-color\": DataDrivenProperty,\n \"icon-halo-color\": DataDrivenProperty,\n \"icon-halo-width\": DataDrivenProperty,\n \"icon-halo-blur\": DataDrivenProperty,\n \"icon-translate\": DataConstantProperty<[number, number]>,\n \"icon-translate-anchor\": DataConstantProperty<\"map\" | \"viewport\">,\n \"text-opacity\": DataDrivenProperty,\n \"text-color\": DataDrivenProperty,\n \"text-halo-color\": DataDrivenProperty,\n \"text-halo-width\": DataDrivenProperty,\n \"text-halo-blur\": DataDrivenProperty,\n \"text-translate\": DataConstantProperty<[number, number]>,\n \"text-translate-anchor\": DataConstantProperty<\"map\" | \"viewport\">,\n|};\n\nconst paint: Properties = new Properties({\n \"icon-opacity\": new DataDrivenProperty(styleSpec[\"paint_symbol\"][\"icon-opacity\"]),\n \"icon-color\": new DataDrivenProperty(styleSpec[\"paint_symbol\"][\"icon-color\"]),\n \"icon-halo-color\": new DataDrivenProperty(styleSpec[\"paint_symbol\"][\"icon-halo-color\"]),\n \"icon-halo-width\": new DataDrivenProperty(styleSpec[\"paint_symbol\"][\"icon-halo-width\"]),\n \"icon-halo-blur\": new DataDrivenProperty(styleSpec[\"paint_symbol\"][\"icon-halo-blur\"]),\n \"icon-translate\": new DataConstantProperty(styleSpec[\"paint_symbol\"][\"icon-translate\"]),\n \"icon-translate-anchor\": new DataConstantProperty(styleSpec[\"paint_symbol\"][\"icon-translate-anchor\"]),\n \"text-opacity\": new DataDrivenProperty(styleSpec[\"paint_symbol\"][\"text-opacity\"]),\n \"text-color\": new DataDrivenProperty(styleSpec[\"paint_symbol\"][\"text-color\"], { runtimeType: ColorType, getOverride: (o) => o.textColor, hasOverride: (o) => !!o.textColor }),\n \"text-halo-color\": new DataDrivenProperty(styleSpec[\"paint_symbol\"][\"text-halo-color\"]),\n \"text-halo-width\": new DataDrivenProperty(styleSpec[\"paint_symbol\"][\"text-halo-width\"]),\n \"text-halo-blur\": new DataDrivenProperty(styleSpec[\"paint_symbol\"][\"text-halo-blur\"]),\n \"text-translate\": new DataConstantProperty(styleSpec[\"paint_symbol\"][\"text-translate\"]),\n \"text-translate-anchor\": new DataConstantProperty(styleSpec[\"paint_symbol\"][\"text-translate-anchor\"]),\n});\n\n// Note: without adding the explicit type annotation, Flow infers weaker types\n// for these objects from their use in the constructor to StyleLayer, as\n// {layout?: Properties<...>, paint: Properties<...>}\nexport default ({ paint, layout }: $Exact<{\n paint: Properties, layout: Properties\n}>);\n", "// @flow\n\nimport assert from 'assert';\nimport type {Expression} from '../style-spec/expression/expression';\nimport type EvaluationContext from '../style-spec/expression/evaluation_context';\nimport type {Type} from '../style-spec/expression/types';\nimport type {ZoomConstantExpression} from '../style-spec/expression';\nimport {NullType} from '../style-spec/expression/types';\nimport {PossiblyEvaluatedPropertyValue} from './properties';\nimport {register} from '../util/web_worker_transfer';\n\n// This is an internal expression class. It is only used in GL JS and\n// has GL JS dependencies which can break the standalone style-spec module\nexport default class FormatSectionOverride implements Expression {\n type: Type;\n defaultValue: PossiblyEvaluatedPropertyValue;\n\n constructor(defaultValue: PossiblyEvaluatedPropertyValue) {\n assert(defaultValue.property.overrides !== undefined);\n this.type = defaultValue.property.overrides ? defaultValue.property.overrides.runtimeType : NullType;\n this.defaultValue = defaultValue;\n }\n\n evaluate(ctx: EvaluationContext) {\n if (ctx.formattedSection) {\n const overrides = this.defaultValue.property.overrides;\n if (overrides && overrides.hasOverride(ctx.formattedSection)) {\n return overrides.getOverride(ctx.formattedSection);\n }\n }\n\n if (ctx.feature && ctx.featureState) {\n return this.defaultValue.evaluate(ctx.feature, ctx.featureState);\n }\n\n return this.defaultValue.property.specification.default;\n }\n\n eachChild(fn: (_: Expression) => void) {\n if (!this.defaultValue.isConstant()) {\n const expr: ZoomConstantExpression<'source'> = ((this.defaultValue.value): any);\n fn(expr._styleExpression.expression);\n }\n }\n\n // Cannot be statically evaluated, as the output depends on the evaluation context.\n outputDefined() {\n return false;\n }\n\n serialize() {\n return null;\n }\n}\n\nregister('FormatSectionOverride', FormatSectionOverride, {omit: ['defaultValue']});\n", "// @flow\n\nimport StyleLayer from '../style_layer';\n\nimport assert from 'assert';\nimport SymbolBucket from '../../data/bucket/symbol_bucket';\nimport resolveTokens from '../../util/resolve_tokens';\nimport properties from './symbol_style_layer_properties';\n\nimport {\n Transitionable,\n Transitioning,\n Layout,\n PossiblyEvaluated,\n PossiblyEvaluatedPropertyValue,\n PropertyValue\n} from '../properties';\n\nimport {\n isExpression,\n StyleExpression,\n ZoomConstantExpression,\n ZoomDependentExpression\n} from '../../style-spec/expression';\n\nimport type {BucketParameters} from '../../data/bucket';\nimport type {LayoutProps, PaintProps} from './symbol_style_layer_properties';\nimport type EvaluationParameters from '../evaluation_parameters';\nimport type {LayerSpecification} from '../../style-spec/types';\nimport type {Feature, SourceExpression, CompositeExpression} from '../../style-spec/expression';\nimport type {Expression} from '../../style-spec/expression/expression';\nimport type {CanonicalTileID} from '../../source/tile_id';\nimport {FormattedType} from '../../style-spec/expression/types';\nimport {typeOf} from '../../style-spec/expression/values';\nimport Formatted from '../../style-spec/expression/types/formatted';\nimport FormatSectionOverride from '../format_section_override';\nimport FormatExpression from '../../style-spec/expression/definitions/format';\nimport Literal from '../../style-spec/expression/definitions/literal';\n\nclass SymbolStyleLayer extends StyleLayer {\n _unevaluatedLayout: Layout;\n layout: PossiblyEvaluated;\n\n _transitionablePaint: Transitionable;\n _transitioningPaint: Transitioning;\n paint: PossiblyEvaluated;\n\n constructor(layer: LayerSpecification) {\n super(layer, properties);\n }\n\n recalculate(parameters: EvaluationParameters, availableImages: Array) {\n super.recalculate(parameters, availableImages);\n\n if (this.layout.get('icon-rotation-alignment') === 'auto') {\n if (this.layout.get('symbol-placement') !== 'point') {\n this.layout._values['icon-rotation-alignment'] = 'map';\n } else {\n this.layout._values['icon-rotation-alignment'] = 'viewport';\n }\n }\n\n if (this.layout.get('text-rotation-alignment') === 'auto') {\n if (this.layout.get('symbol-placement') !== 'point') {\n this.layout._values['text-rotation-alignment'] = 'map';\n } else {\n this.layout._values['text-rotation-alignment'] = 'viewport';\n }\n }\n\n // If unspecified, `*-pitch-alignment` inherits `*-rotation-alignment`\n if (this.layout.get('text-pitch-alignment') === 'auto') {\n this.layout._values['text-pitch-alignment'] = this.layout.get('text-rotation-alignment');\n }\n if (this.layout.get('icon-pitch-alignment') === 'auto') {\n this.layout._values['icon-pitch-alignment'] = this.layout.get('icon-rotation-alignment');\n }\n\n if (this.layout.get('symbol-placement') === 'point') {\n const writingModes = this.layout.get('text-writing-mode');\n if (writingModes) {\n // remove duplicates, preserving order\n const deduped = [];\n for (const m of writingModes) {\n if (deduped.indexOf(m) < 0) deduped.push(m);\n }\n this.layout._values['text-writing-mode'] = deduped;\n } else {\n this.layout._values['text-writing-mode'] = ['horizontal'];\n }\n }\n\n this._setPaintOverrides();\n }\n\n getValueAndResolveTokens(name: *, feature: Feature, canonical: CanonicalTileID, availableImages: Array) {\n const value = this.layout.get(name).evaluate(feature, {}, canonical, availableImages);\n const unevaluated = this._unevaluatedLayout._values[name];\n if (!unevaluated.isDataDriven() && !isExpression(unevaluated.value) && value) {\n return resolveTokens(feature.properties, value);\n }\n\n return value;\n }\n\n createBucket(parameters: BucketParameters<*>) {\n return new SymbolBucket(parameters);\n }\n\n queryRadius(): number {\n return 0;\n }\n\n queryIntersectsFeature(): boolean {\n assert(false); // Should take a different path in FeatureIndex\n return false;\n }\n\n _setPaintOverrides() {\n for (const overridable of properties.paint.overridableProperties) {\n if (!SymbolStyleLayer.hasPaintOverride(this.layout, overridable)) {\n continue;\n }\n const overriden = this.paint.get(overridable);\n const override = new FormatSectionOverride(overriden);\n const styleExpression = new StyleExpression(override, overriden.property.specification);\n let expression = null;\n if (overriden.value.kind === 'constant' || overriden.value.kind === 'source') {\n expression = (new ZoomConstantExpression('source', styleExpression): SourceExpression);\n } else {\n expression = (new ZoomDependentExpression('composite',\n styleExpression,\n overriden.value.zoomStops,\n overriden.value._interpolationType): CompositeExpression);\n }\n this.paint._values[overridable] = new PossiblyEvaluatedPropertyValue(overriden.property,\n expression,\n overriden.parameters);\n }\n }\n\n _handleOverridablePaintPropertyUpdate(name: string, oldValue: PropertyValue, newValue: PropertyValue): boolean {\n if (!this.layout || oldValue.isDataDriven() || newValue.isDataDriven()) {\n return false;\n }\n return SymbolStyleLayer.hasPaintOverride(this.layout, name);\n }\n\n static hasPaintOverride(layout: PossiblyEvaluated, propertyName: string): boolean {\n const textField = layout.get('text-field');\n const property = properties.paint.properties[propertyName];\n let hasOverrides = false;\n\n const checkSections = (sections) => {\n for (const section of sections) {\n if (property.overrides && property.overrides.hasOverride(section)) {\n hasOverrides = true;\n return;\n }\n }\n };\n\n if (textField.value.kind === 'constant' && textField.value.value instanceof Formatted) {\n checkSections(textField.value.value.sections);\n } else if (textField.value.kind === 'source') {\n\n const checkExpression = (expression: Expression) => {\n if (hasOverrides) return;\n\n if (expression instanceof Literal && typeOf(expression.value) === FormattedType) {\n const formatted: Formatted = ((expression.value): any);\n checkSections(formatted.sections);\n } else if (expression instanceof FormatExpression) {\n checkSections(expression.sections);\n } else {\n expression.eachChild(checkExpression);\n }\n };\n\n const expr: ZoomConstantExpression<'source'> = ((textField.value): any);\n if (expr._styleExpression) {\n checkExpression(expr._styleExpression.expression);\n }\n }\n\n return hasOverrides;\n }\n}\n\nexport default SymbolStyleLayer;\n", "// @flow\nexport default resolveTokens;\n\n/**\n * Replace tokens in a string template with values in an object\n *\n * @param properties a key/value relationship between tokens and replacements\n * @param text the template string\n * @returns the template with tokens replaced\n * @private\n */\nfunction resolveTokens(properties: {+[string]: mixed}, text: string): string {\n return text.replace(/{([^{}]+)}/g, (match, key: string) => {\n return key in properties ? String(properties[key]) : '';\n });\n}\n", "// This file is generated. Edit build/generate-style-code.js, then run `yarn run codegen`.\n// @flow\n/* eslint-disable */\n\nimport styleSpec from '../../style-spec/reference/latest';\n\nimport {\n Properties,\n DataConstantProperty,\n DataDrivenProperty,\n CrossFadedDataDrivenProperty,\n CrossFadedProperty,\n ColorRampProperty\n} from '../properties';\n\nimport type Color from '../../style-spec/util/color';\n\nimport type Formatted from '../../style-spec/expression/types/formatted';\n\nimport type ResolvedImage from '../../style-spec/expression/types/resolved_image';\n\n\nexport type PaintProps = {|\n \"background-color\": DataConstantProperty,\n \"background-pattern\": CrossFadedProperty,\n \"background-opacity\": DataConstantProperty,\n|};\n\nconst paint: Properties = new Properties({\n \"background-color\": new DataConstantProperty(styleSpec[\"paint_background\"][\"background-color\"]),\n \"background-pattern\": new CrossFadedProperty(styleSpec[\"paint_background\"][\"background-pattern\"]),\n \"background-opacity\": new DataConstantProperty(styleSpec[\"paint_background\"][\"background-opacity\"]),\n});\n\n// Note: without adding the explicit type annotation, Flow infers weaker types\n// for these objects from their use in the constructor to StyleLayer, as\n// {layout?: Properties<...>, paint: Properties<...>}\nexport default ({ paint }: $Exact<{\n paint: Properties\n}>);\n", "// @flow\n\nimport StyleLayer from '../style_layer';\n\nimport properties from './background_style_layer_properties';\nimport {Transitionable, Transitioning, PossiblyEvaluated} from '../properties';\n\nimport type {PaintProps} from './background_style_layer_properties';\nimport type {LayerSpecification} from '../../style-spec/types';\n\nclass BackgroundStyleLayer extends StyleLayer {\n _transitionablePaint: Transitionable;\n _transitioningPaint: Transitioning;\n paint: PossiblyEvaluated;\n\n constructor(layer: LayerSpecification) {\n super(layer, properties);\n }\n}\n\nexport default BackgroundStyleLayer;\n", "// This file is generated. Edit build/generate-style-code.js, then run `yarn run codegen`.\n// @flow\n/* eslint-disable */\n\nimport styleSpec from '../../style-spec/reference/latest';\n\nimport {\n Properties,\n DataConstantProperty,\n DataDrivenProperty,\n CrossFadedDataDrivenProperty,\n CrossFadedProperty,\n ColorRampProperty\n} from '../properties';\n\nimport type Color from '../../style-spec/util/color';\n\nimport type Formatted from '../../style-spec/expression/types/formatted';\n\nimport type ResolvedImage from '../../style-spec/expression/types/resolved_image';\n\n\nexport type PaintProps = {|\n \"raster-opacity\": DataConstantProperty,\n \"raster-hue-rotate\": DataConstantProperty,\n \"raster-brightness-min\": DataConstantProperty,\n \"raster-brightness-max\": DataConstantProperty,\n \"raster-saturation\": DataConstantProperty,\n \"raster-contrast\": DataConstantProperty,\n \"raster-resampling\": DataConstantProperty<\"linear\" | \"nearest\">,\n \"raster-fade-duration\": DataConstantProperty,\n|};\n\nconst paint: Properties = new Properties({\n \"raster-opacity\": new DataConstantProperty(styleSpec[\"paint_raster\"][\"raster-opacity\"]),\n \"raster-hue-rotate\": new DataConstantProperty(styleSpec[\"paint_raster\"][\"raster-hue-rotate\"]),\n \"raster-brightness-min\": new DataConstantProperty(styleSpec[\"paint_raster\"][\"raster-brightness-min\"]),\n \"raster-brightness-max\": new DataConstantProperty(styleSpec[\"paint_raster\"][\"raster-brightness-max\"]),\n \"raster-saturation\": new DataConstantProperty(styleSpec[\"paint_raster\"][\"raster-saturation\"]),\n \"raster-contrast\": new DataConstantProperty(styleSpec[\"paint_raster\"][\"raster-contrast\"]),\n \"raster-resampling\": new DataConstantProperty(styleSpec[\"paint_raster\"][\"raster-resampling\"]),\n \"raster-fade-duration\": new DataConstantProperty(styleSpec[\"paint_raster\"][\"raster-fade-duration\"]),\n});\n\n// Note: without adding the explicit type annotation, Flow infers weaker types\n// for these objects from their use in the constructor to StyleLayer, as\n// {layout?: Properties<...>, paint: Properties<...>}\nexport default ({ paint }: $Exact<{\n paint: Properties\n}>);\n", "// @flow\n\nimport StyleLayer from '../style_layer';\n\nimport properties from './raster_style_layer_properties';\nimport {Transitionable, Transitioning, PossiblyEvaluated} from '../properties';\n\nimport type {PaintProps} from './raster_style_layer_properties';\nimport type {LayerSpecification} from '../../style-spec/types';\n\nclass RasterStyleLayer extends StyleLayer {\n _transitionablePaint: Transitionable;\n _transitioningPaint: Transitioning;\n paint: PossiblyEvaluated;\n\n constructor(layer: LayerSpecification) {\n super(layer, properties);\n }\n}\n\nexport default RasterStyleLayer;\n", "// @flow\n\nimport StyleLayer from '../style_layer';\nimport type Map from '../../ui/map';\nimport assert from 'assert';\n\ntype CustomRenderMethod = (gl: WebGLRenderingContext, matrix: Array) => void;\n\n/**\n * Interface for custom style layers. This is a specification for\n * implementers to model: it is not an exported method or class.\n *\n * Custom layers allow a user to render directly into the map's GL context using the map's camera.\n * These layers can be added between any regular layers using {@link Map#addLayer}.\n *\n * Custom layers must have a unique `id` and must have the `type` of `\"custom\"`.\n * They must implement `render` and may implement `prerender`, `onAdd` and `onRemove`.\n * They can trigger rendering using {@link Map#triggerRepaint}\n * and they should appropriately handle {@link Map.event:webglcontextlost} and\n * {@link Map.event:webglcontextrestored}.\n *\n * The `renderingMode` property controls whether the layer is treated as a `\"2d\"` or `\"3d\"` map layer. Use:\n * - `\"renderingMode\": \"3d\"` to use the depth buffer and share it with other layers\n * - `\"renderingMode\": \"2d\"` to add a layer with no depth. If you need to use the depth buffer for a `\"2d\"` layer you must use an offscreen\n * framebuffer and {@link CustomLayerInterface#prerender}\n *\n * @interface CustomLayerInterface\n * @property {string} id A unique layer id.\n * @property {string} type The layer's type. Must be `\"custom\"`.\n * @property {string} renderingMode Either `\"2d\"` or `\"3d\"`. Defaults to `\"2d\"`.\n * @example\n * // Custom layer implemented as ES6 class\n * class NullIslandLayer {\n * constructor() {\n * this.id = 'null-island';\n * this.type = 'custom';\n * this.renderingMode = '2d';\n * }\n *\n * onAdd(map, gl) {\n * const vertexSource = `\n * uniform mat4 u_matrix;\n * void main() {\n * gl_Position = u_matrix * vec4(0.5, 0.5, 0.0, 1.0);\n * gl_PointSize = 20.0;\n * }`;\n *\n * const fragmentSource = `\n * void main() {\n * gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);\n * }`;\n *\n * const vertexShader = gl.createShader(gl.VERTEX_SHADER);\n * gl.shaderSource(vertexShader, vertexSource);\n * gl.compileShader(vertexShader);\n * const fragmentShader = gl.createShader(gl.FRAGMENT_SHADER);\n * gl.shaderSource(fragmentShader, fragmentSource);\n * gl.compileShader(fragmentShader);\n *\n * this.program = gl.createProgram();\n * gl.attachShader(this.program, vertexShader);\n * gl.attachShader(this.program, fragmentShader);\n * gl.linkProgram(this.program);\n * }\n *\n * render(gl, matrix) {\n * gl.useProgram(this.program);\n * gl.uniformMatrix4fv(gl.getUniformLocation(this.program, \"u_matrix\"), false, matrix);\n * gl.drawArrays(gl.POINTS, 0, 1);\n * }\n * }\n *\n * map.on('load', function() {\n * map.addLayer(new NullIslandLayer());\n * });\n */\n\n/**\n * Optional method called when the layer has been added to the Map with {@link Map#addLayer}. This\n * gives the layer a chance to initialize gl resources and register event listeners.\n *\n * @function\n * @memberof CustomLayerInterface\n * @instance\n * @name onAdd\n * @param {Map} map The Map this custom layer was just added to.\n * @param {WebGLRenderingContext} gl The gl context for the map.\n */\n\n/**\n * Optional method called when the layer has been removed from the Map with {@link Map#removeLayer}. This\n * gives the layer a chance to clean up gl resources and event listeners.\n *\n * @function\n * @memberof CustomLayerInterface\n * @instance\n * @name onRemove\n * @param {Map} map The Map this custom layer was just added to.\n * @param {WebGLRenderingContext} gl The gl context for the map.\n */\n\n/**\n * Optional method called during a render frame to allow a layer to prepare resources or render into a texture.\n *\n * The layer cannot make any assumptions about the current GL state and must bind a framebuffer before rendering.\n *\n * @function\n * @memberof CustomLayerInterface\n * @instance\n * @name prerender\n * @param {WebGLRenderingContext} gl The map's gl context.\n * @param {Array} matrix The map's camera matrix. It projects spherical mercator\n * coordinates to gl coordinates. The mercator coordinate `[0, 0]` represents the\n * top left corner of the mercator world and `[1, 1]` represents the bottom right corner. When\n * the `renderingMode` is `\"3d\"`, the z coordinate is conformal. A box with identical x, y, and z\n * lengths in mercator units would be rendered as a cube. {@link MercatorCoordinate}.fromLngLat\n * can be used to project a `LngLat` to a mercator coordinate.\n */\n\n/**\n * Called during a render frame allowing the layer to draw into the GL context.\n *\n * The layer can assume blending and depth state is set to allow the layer to properly\n * blend and clip other layers. The layer cannot make any other assumptions about the\n * current GL state.\n *\n * If the layer needs to render to a texture, it should implement the `prerender` method\n * to do this and only use the `render` method for drawing directly into the main framebuffer.\n *\n * The blend function is set to `gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA)`. This expects\n * colors to be provided in premultiplied alpha form where the `r`, `g` and `b` values are already\n * multiplied by the `a` value. If you are unable to provide colors in premultiplied form you\n * may want to change the blend function to\n * `gl.blendFuncSeparate(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE_MINUS_SRC_ALPHA)`.\n *\n * @function\n * @memberof CustomLayerInterface\n * @instance\n * @name render\n * @param {WebGLRenderingContext} gl The map's gl context.\n * @param {Array} matrix The map's camera matrix. It projects spherical mercator\n * coordinates to gl coordinates. The spherical mercator coordinate `[0, 0]` represents the\n * top left corner of the mercator world and `[1, 1]` represents the bottom right corner. When\n * the `renderingMode` is `\"3d\"`, the z coordinate is conformal. A box with identical x, y, and z\n * lengths in mercator units would be rendered as a cube. {@link MercatorCoordinate}.fromLngLat\n * can be used to project a `LngLat` to a mercator coordinate.\n */\nexport type CustomLayerInterface = {\n id: string,\n type: \"custom\",\n renderingMode: \"2d\" | \"3d\",\n render: CustomRenderMethod,\n prerender: ?CustomRenderMethod,\n onAdd: ?(map: Map, gl: WebGLRenderingContext) => void,\n onRemove: ?(map: Map, gl: WebGLRenderingContext) => void\n}\n\nexport function validateCustomStyleLayer(layerObject: CustomLayerInterface) {\n const errors = [];\n const id = layerObject.id;\n\n if (id === undefined) {\n errors.push({\n message: `layers.${id}: missing required property \"id\"`\n });\n }\n\n if (layerObject.render === undefined) {\n errors.push({\n message: `layers.${id}: missing required method \"render\"`\n });\n }\n\n if (layerObject.renderingMode &&\n layerObject.renderingMode !== '2d' &&\n layerObject.renderingMode !== '3d') {\n errors.push({\n message: `layers.${id}: property \"renderingMode\" must be either \"2d\" or \"3d\"`\n });\n }\n\n return errors;\n}\n\nclass CustomStyleLayer extends StyleLayer {\n\n implementation: CustomLayerInterface;\n\n constructor(implementation: CustomLayerInterface) {\n super(implementation, {});\n this.implementation = implementation;\n }\n\n is3D() {\n return this.implementation.renderingMode === '3d';\n }\n\n hasOffscreenPass() {\n return this.implementation.prerender !== undefined;\n }\n\n recalculate() {}\n updateTransitions() {}\n hasTransition() {}\n\n serialize() {\n assert(false, \"Custom layers cannot be serialized\");\n }\n\n onAdd(map: Map) {\n if (this.implementation.onAdd) {\n this.implementation.onAdd(map, map.painter.context.gl);\n }\n }\n\n onRemove(map: Map) {\n if (this.implementation.onRemove) {\n this.implementation.onRemove(map, map.painter.context.gl);\n }\n }\n}\n\nexport default CustomStyleLayer;\n", "// @flow\n\nimport circle from './style_layer/circle_style_layer';\nimport heatmap from './style_layer/heatmap_style_layer';\nimport hillshade from './style_layer/hillshade_style_layer';\nimport fill from './style_layer/fill_style_layer';\nimport fillExtrusion from './style_layer/fill_extrusion_style_layer';\nimport line from './style_layer/line_style_layer';\nimport symbol from './style_layer/symbol_style_layer';\nimport background from './style_layer/background_style_layer';\nimport raster from './style_layer/raster_style_layer';\nimport CustomStyleLayer from './style_layer/custom_style_layer';\nimport type {CustomLayerInterface} from './style_layer/custom_style_layer';\n\nimport type {LayerSpecification} from '../style-spec/types';\n\nconst subclasses = {\n circle,\n heatmap,\n hillshade,\n fill,\n 'fill-extrusion': fillExtrusion,\n line,\n symbol,\n background,\n raster\n};\n\nexport default function createStyleLayer(layer: LayerSpecification | CustomLayerInterface) {\n if (layer.type === 'custom') {\n return new CustomStyleLayer(layer);\n } else {\n return new subclasses[layer.type](layer);\n }\n}\n\n", "// @flow\n\nimport window from '../util/window';\nconst {HTMLImageElement, HTMLCanvasElement, HTMLVideoElement, ImageData, ImageBitmap} = window;\n\nimport type Context from '../gl/context';\nimport type {RGBAImage, AlphaImage} from '../util/image';\n\nexport type TextureFormat =\n | $PropertyType\n | $PropertyType;\nexport type TextureFilter =\n | $PropertyType\n | $PropertyType\n | $PropertyType;\nexport type TextureWrap =\n | $PropertyType\n | $PropertyType\n | $PropertyType;\n\ntype EmptyImage = {\n width: number,\n height: number,\n data: null\n}\n\nexport type TextureImage =\n | RGBAImage\n | AlphaImage\n | HTMLImageElement\n | HTMLCanvasElement\n | HTMLVideoElement\n | ImageData\n | EmptyImage\n | ImageBitmap;\n\nclass Texture {\n context: Context;\n size: [number, number];\n texture: WebGLTexture;\n format: TextureFormat;\n filter: ?TextureFilter;\n wrap: ?TextureWrap;\n useMipmap: boolean;\n\n constructor(context: Context, image: TextureImage, format: TextureFormat, options: ?{ premultiply?: boolean, useMipmap?: boolean }) {\n this.context = context;\n this.format = format;\n this.texture = context.gl.createTexture();\n this.update(image, options);\n }\n\n update(image: TextureImage, options: ?{premultiply?: boolean, useMipmap?: boolean}, position?: { x: number, y: number }) {\n const {width, height} = image;\n const resize = (!this.size || this.size[0] !== width || this.size[1] !== height) && !position;\n const {context} = this;\n const {gl} = context;\n\n this.useMipmap = Boolean(options && options.useMipmap);\n gl.bindTexture(gl.TEXTURE_2D, this.texture);\n\n context.pixelStoreUnpackFlipY.set(false);\n context.pixelStoreUnpack.set(1);\n context.pixelStoreUnpackPremultiplyAlpha.set(this.format === gl.RGBA && (!options || options.premultiply !== false));\n\n if (resize) {\n this.size = [width, height];\n\n if (image instanceof HTMLImageElement || image instanceof HTMLCanvasElement || image instanceof HTMLVideoElement || image instanceof ImageData || (ImageBitmap && image instanceof ImageBitmap)) {\n gl.texImage2D(gl.TEXTURE_2D, 0, this.format, this.format, gl.UNSIGNED_BYTE, image);\n } else {\n gl.texImage2D(gl.TEXTURE_2D, 0, this.format, width, height, 0, this.format, gl.UNSIGNED_BYTE, image.data);\n }\n\n } else {\n const {x, y} = position || {x: 0, y: 0};\n if (image instanceof HTMLImageElement || image instanceof HTMLCanvasElement || image instanceof HTMLVideoElement || image instanceof ImageData || (ImageBitmap && image instanceof ImageBitmap)) {\n gl.texSubImage2D(gl.TEXTURE_2D, 0, x, y, gl.RGBA, gl.UNSIGNED_BYTE, image);\n } else {\n gl.texSubImage2D(gl.TEXTURE_2D, 0, x, y, width, height, gl.RGBA, gl.UNSIGNED_BYTE, image.data);\n }\n }\n\n if (this.useMipmap && this.isSizePowerOfTwo()) {\n gl.generateMipmap(gl.TEXTURE_2D);\n }\n }\n\n bind(filter: TextureFilter, wrap: TextureWrap, minFilter: ?TextureFilter) {\n const {context} = this;\n const {gl} = context;\n gl.bindTexture(gl.TEXTURE_2D, this.texture);\n\n if (minFilter === gl.LINEAR_MIPMAP_NEAREST && !this.isSizePowerOfTwo()) {\n minFilter = gl.LINEAR;\n }\n\n if (filter !== this.filter) {\n gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, filter);\n gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, minFilter || filter);\n this.filter = filter;\n }\n\n if (wrap !== this.wrap) {\n gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, wrap);\n gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, wrap);\n this.wrap = wrap;\n }\n }\n\n isSizePowerOfTwo() {\n return this.size[0] === this.size[1] && (Math.log(this.size[0]) / Math.LN2) % 1 === 0;\n }\n\n destroy() {\n const {gl} = this.context;\n gl.deleteTexture(this.texture);\n this.texture = (null: any);\n }\n}\n\nexport default Texture;\n", "// @flow\n\n/**\n * Invokes the wrapped function in a non-blocking way when trigger() is called. Invocation requests\n * are ignored until the function was actually invoked.\n *\n * @private\n */\nclass ThrottledInvoker {\n _channel: MessageChannel;\n _triggered: boolean;\n _callback: Function\n\n constructor(callback: Function) {\n this._callback = callback;\n this._triggered = false;\n if (typeof MessageChannel !== 'undefined') {\n this._channel = new MessageChannel();\n this._channel.port2.onmessage = () => {\n this._triggered = false;\n this._callback();\n };\n }\n }\n\n trigger() {\n if (!this._triggered) {\n this._triggered = true;\n if (this._channel) {\n this._channel.port1.postMessage(true);\n } else {\n setTimeout(() => {\n this._triggered = false;\n this._callback();\n }, 0);\n }\n }\n }\n\n remove() {\n delete this._channel;\n this._callback = () => {};\n }\n}\n\nexport default ThrottledInvoker;\n", "// @flow\n\nimport {bindAll, isWorker, isSafari} from './util';\nimport window from './window';\nimport {serialize, deserialize} from './web_worker_transfer';\nimport ThrottledInvoker from './throttled_invoker';\n\nimport type {Transferable} from '../types/transferable';\nimport type {Cancelable} from '../types/cancelable';\n\n/**\n * An implementation of the [Actor design pattern](http://en.wikipedia.org/wiki/Actor_model)\n * that maintains the relationship between asynchronous tasks and the objects\n * that spin them off - in this case, tasks like parsing parts of styles,\n * owned by the styles\n *\n * @param {WebWorker} target\n * @param {WebWorker} parent\n * @param {string|number} mapId A unique identifier for the Map instance using this Actor.\n * @private\n */\nclass Actor {\n target: any;\n parent: any;\n mapId: ?number;\n callbacks: { number: any };\n name: string;\n tasks: { number: any };\n taskQueue: Array;\n cancelCallbacks: { number: Cancelable };\n invoker: ThrottledInvoker;\n globalScope: any;\n\n constructor(target: any, parent: any, mapId: ?number) {\n this.target = target;\n this.parent = parent;\n this.mapId = mapId;\n this.callbacks = {};\n this.tasks = {};\n this.taskQueue = [];\n this.cancelCallbacks = {};\n bindAll(['receive', 'process'], this);\n this.invoker = new ThrottledInvoker(this.process);\n this.target.addEventListener('message', this.receive, false);\n this.globalScope = isWorker() ? target : window;\n }\n\n /**\n * Sends a message from a main-thread map to a Worker or from a Worker back to\n * a main-thread map instance.\n *\n * @param type The name of the target method to invoke or '[source-type].[source-name].name' for a method on a WorkerSource.\n * @param targetMapId A particular mapId to which to send this message.\n * @private\n */\n send(type: string, data: mixed, callback: ?Function, targetMapId: ?string, mustQueue: boolean = false): ?Cancelable {\n // We're using a string ID instead of numbers because they are being used as object keys\n // anyway, and thus stringified implicitly. We use random IDs because an actor may receive\n // message from multiple other actors which could run in different execution context. A\n // linearly increasing ID could produce collisions.\n const id = Math.round((Math.random() * 1e18)).toString(36).substring(0, 10);\n if (callback) {\n this.callbacks[id] = callback;\n }\n const buffers: ?Array = isSafari(this.globalScope) ? undefined : [];\n this.target.postMessage({\n id,\n type,\n hasCallback: !!callback,\n targetMapId,\n mustQueue,\n sourceMapId: this.mapId,\n data: serialize(data, buffers)\n }, buffers);\n return {\n cancel: () => {\n if (callback) {\n // Set the callback to null so that it never fires after the request is aborted.\n delete this.callbacks[id];\n }\n this.target.postMessage({\n id,\n type: '',\n targetMapId,\n sourceMapId: this.mapId\n });\n }\n };\n }\n\n receive(message: Object) {\n const data = message.data,\n id = data.id;\n\n if (!id) {\n return;\n }\n\n if (data.targetMapId && this.mapId !== data.targetMapId) {\n return;\n }\n\n if (data.type === '') {\n // Remove the original request from the queue. This is only possible if it\n // hasn't been kicked off yet. The id will remain in the queue, but because\n // there is no associated task, it will be dropped once it's time to execute it.\n delete this.tasks[id];\n const cancel = this.cancelCallbacks[id];\n delete this.cancelCallbacks[id];\n if (cancel) {\n cancel();\n }\n } else {\n if (isWorker() || data.mustQueue) {\n // In workers, store the tasks that we need to process before actually processing them. This\n // is necessary because we want to keep receiving messages, and in particular,\n // messages. Some tasks may take a while in the worker thread, so before\n // executing the next task in our queue, postMessage preempts this and \n // messages can be processed. We're using a MessageChannel object to get throttle the\n // process() flow to one at a time.\n this.tasks[id] = data;\n this.taskQueue.push(id);\n this.invoker.trigger();\n } else {\n // In the main thread, process messages immediately so that other work does not slip in\n // between getting partial data back from workers.\n this.processTask(id, data);\n }\n }\n }\n\n process() {\n if (!this.taskQueue.length) {\n return;\n }\n const id = this.taskQueue.shift();\n const task = this.tasks[id];\n delete this.tasks[id];\n // Schedule another process call if we know there's more to process _before_ invoking the\n // current task. This is necessary so that processing continues even if the current task\n // doesn't execute successfully.\n if (this.taskQueue.length) {\n this.invoker.trigger();\n }\n if (!task) {\n // If the task ID doesn't have associated task data anymore, it was canceled.\n return;\n }\n\n this.processTask(id, task);\n }\n\n processTask(id: number, task: any) {\n if (task.type === '') {\n // The done() function in the counterpart has been called, and we are now\n // firing the callback in the originating actor, if there is one.\n const callback = this.callbacks[id];\n delete this.callbacks[id];\n if (callback) {\n // If we get a response, but don't have a callback, the request was canceled.\n if (task.error) {\n callback(deserialize(task.error));\n } else {\n callback(null, deserialize(task.data));\n }\n }\n } else {\n let completed = false;\n const buffers: ?Array = isSafari(this.globalScope) ? undefined : [];\n const done = task.hasCallback ? (err, data) => {\n completed = true;\n delete this.cancelCallbacks[id];\n this.target.postMessage({\n id,\n type: '',\n sourceMapId: this.mapId,\n error: err ? serialize(err) : null,\n data: serialize(data, buffers)\n }, buffers);\n } : (_) => {\n completed = true;\n };\n\n let callback = null;\n const params = (deserialize(task.data): any);\n if (this.parent[task.type]) {\n // task.type == 'loadTile', 'removeTile', etc.\n callback = this.parent[task.type](task.sourceMapId, params, done);\n } else if (this.parent.getWorkerSource) {\n // task.type == sourcetype.method\n const keys = task.type.split('.');\n const scope = (this.parent: any).getWorkerSource(task.sourceMapId, keys[0], params.source);\n callback = scope[keys[1]](params, done);\n } else {\n // No function was found.\n done(new Error(`Could not find function ${task.type}`));\n }\n\n if (!completed && callback && callback.cancel) {\n // Allows canceling the task as long as it hasn't been completed yet.\n this.cancelCallbacks[id] = callback.cancel;\n }\n }\n }\n\n remove() {\n this.invoker.remove();\n this.target.removeEventListener('message', this.receive, false);\n }\n}\n\nexport default Actor;\n", "export { getURL, getTileBBox, getMercCoords };\n\n\n/**\n * getURL\n *\n * @param {String} baseUrl Base url of the WMS server\n * @param {String} layer Layer name\n * @param {Number} x Tile coordinate x\n * @param {Number} y Tile coordinate y\n * @param {Number} z Tile zoom\n * @param {Object} [options]\n * @param {String} [options.format='image/png']\n * @param {String} [options.service='WMS']\n * @param {String} [options.version='1.1.1']\n * @param {String} [options.request='GetMap']\n * @param {String} [options.srs='EPSG:3857']\n * @param {Number} [options.width='256']\n * @param {Number} [options.height='256']\n * @returns {String} url\n * @example\n * var baseUrl = 'http://geodata.state.nj.us/imagerywms/Natural2015';\n * var layer = 'Natural2015';\n * var url = whoots.getURL(baseUrl, layer, 154308, 197167, 19);\n */\nfunction getURL(baseUrl, layer, x, y, z, options) {\n options = options || {};\n\n var url = baseUrl + '?' + [\n 'bbox=' + getTileBBox(x, y, z),\n 'format=' + (options.format || 'image/png'),\n 'service=' + (options.service || 'WMS'),\n 'version=' + (options.version || '1.1.1'),\n 'request=' + (options.request || 'GetMap'),\n 'srs=' + (options.srs || 'EPSG:3857'),\n 'width=' + (options.width || 256),\n 'height=' + (options.height || 256),\n 'layers=' + layer\n ].join('&');\n\n return url;\n}\n\n\n/**\n * getTileBBox\n *\n * @param {Number} x Tile coordinate x\n * @param {Number} y Tile coordinate y\n * @param {Number} z Tile zoom\n * @returns {String} String of the bounding box\n */\nfunction getTileBBox(x, y, z) {\n // for Google/OSM tile scheme we need to alter the y\n y = (Math.pow(2, z) - y - 1);\n\n var min = getMercCoords(x * 256, y * 256, z),\n max = getMercCoords((x + 1) * 256, (y + 1) * 256, z);\n\n return min[0] + ',' + min[1] + ',' + max[0] + ',' + max[1];\n}\n\n\n/**\n * getMercCoords\n *\n * @param {Number} x Pixel coordinate x\n * @param {Number} y Pixel coordinate y\n * @param {Number} z Tile zoom\n * @returns {Array} [x, y]\n */\nfunction getMercCoords(x, y, z) {\n var resolution = (2 * Math.PI * 6378137 / 256) / Math.pow(2, z),\n merc_x = (x * resolution - 2 * Math.PI * 6378137 / 2.0),\n merc_y = (y * resolution - 2 * Math.PI * 6378137 / 2.0);\n\n return [merc_x, merc_y];\n}\n", "// @flow\n\nimport LngLat from './lng_lat';\n\nimport type {LngLatLike} from './lng_lat';\n\n/**\n * A `LngLatBounds` object represents a geographical bounding box,\n * defined by its southwest and northeast points in longitude and latitude.\n *\n * If no arguments are provided to the constructor, a `null` bounding box is created.\n *\n * Note that any Mapbox GL method that accepts a `LngLatBounds` object as an argument or option\n * can also accept an `Array` of two {@link LngLatLike} constructs and will perform an implicit conversion.\n * This flexible type is documented as {@link LngLatBoundsLike}.\n *\n * @param {LngLatLike} [sw] The southwest corner of the bounding box.\n * @param {LngLatLike} [ne] The northeast corner of the bounding box.\n * @example\n * var sw = new mapboxgl.LngLat(-73.9876, 40.7661);\n * var ne = new mapboxgl.LngLat(-73.9397, 40.8002);\n * var llb = new mapboxgl.LngLatBounds(sw, ne);\n */\nclass LngLatBounds {\n _ne: LngLat;\n _sw: LngLat;\n\n // This constructor is too flexible to type. It should not be so flexible.\n constructor(sw: any, ne: any) {\n if (!sw) {\n // noop\n } else if (ne) {\n this.setSouthWest(sw).setNorthEast(ne);\n } else if (sw.length === 4) {\n this.setSouthWest([sw[0], sw[1]]).setNorthEast([sw[2], sw[3]]);\n } else {\n this.setSouthWest(sw[0]).setNorthEast(sw[1]);\n }\n }\n\n /**\n * Set the northeast corner of the bounding box\n *\n * @param {LngLatLike} ne a {@link LngLatLike} object describing the northeast corner of the bounding box.\n * @returns {LngLatBounds} `this`\n */\n setNorthEast(ne: LngLatLike) {\n this._ne = ne instanceof LngLat ? new LngLat(ne.lng, ne.lat) : LngLat.convert(ne);\n return this;\n }\n\n /**\n * Set the southwest corner of the bounding box\n *\n * @param {LngLatLike} sw a {@link LngLatLike} object describing the southwest corner of the bounding box.\n * @returns {LngLatBounds} `this`\n */\n setSouthWest(sw: LngLatLike) {\n this._sw = sw instanceof LngLat ? new LngLat(sw.lng, sw.lat) : LngLat.convert(sw);\n return this;\n }\n\n /**\n * Extend the bounds to include a given LngLatLike or LngLatBoundsLike.\n *\n * @param {LngLatLike|LngLatBoundsLike} obj object to extend to\n * @returns {LngLatBounds} `this`\n */\n extend(obj: LngLatLike | LngLatBoundsLike) {\n const sw = this._sw,\n ne = this._ne;\n let sw2, ne2;\n\n if (obj instanceof LngLat) {\n sw2 = obj;\n ne2 = obj;\n\n } else if (obj instanceof LngLatBounds) {\n sw2 = obj._sw;\n ne2 = obj._ne;\n\n if (!sw2 || !ne2) return this;\n\n } else {\n if (Array.isArray(obj)) {\n if (obj.length === 4 || obj.every(Array.isArray)) {\n const lngLatBoundsObj = ((obj: any): LngLatBoundsLike);\n return this.extend(LngLatBounds.convert(lngLatBoundsObj));\n } else {\n const lngLatObj = ((obj: any): LngLatLike);\n return this.extend(LngLat.convert(lngLatObj));\n }\n }\n return this;\n }\n\n if (!sw && !ne) {\n this._sw = new LngLat(sw2.lng, sw2.lat);\n this._ne = new LngLat(ne2.lng, ne2.lat);\n\n } else {\n sw.lng = Math.min(sw2.lng, sw.lng);\n sw.lat = Math.min(sw2.lat, sw.lat);\n ne.lng = Math.max(ne2.lng, ne.lng);\n ne.lat = Math.max(ne2.lat, ne.lat);\n }\n\n return this;\n }\n\n /**\n * Returns the geographical coordinate equidistant from the bounding box's corners.\n *\n * @returns {LngLat} The bounding box's center.\n * @example\n * var llb = new mapboxgl.LngLatBounds([-73.9876, 40.7661], [-73.9397, 40.8002]);\n * llb.getCenter(); // = LngLat {lng: -73.96365, lat: 40.78315}\n */\n getCenter(): LngLat {\n return new LngLat((this._sw.lng + this._ne.lng) / 2, (this._sw.lat + this._ne.lat) / 2);\n }\n\n /**\n * Returns the southwest corner of the bounding box.\n *\n * @returns {LngLat} The southwest corner of the bounding box.\n */\n getSouthWest(): LngLat { return this._sw; }\n\n /**\n * Returns the northeast corner of the bounding box.\n *\n * @returns {LngLat} The northeast corner of the bounding box.\n */\n getNorthEast(): LngLat { return this._ne; }\n\n /**\n * Returns the northwest corner of the bounding box.\n *\n * @returns {LngLat} The northwest corner of the bounding box.\n */\n getNorthWest(): LngLat { return new LngLat(this.getWest(), this.getNorth()); }\n\n /**\n * Returns the southeast corner of the bounding box.\n *\n * @returns {LngLat} The southeast corner of the bounding box.\n */\n getSouthEast(): LngLat { return new LngLat(this.getEast(), this.getSouth()); }\n\n /**\n * Returns the west edge of the bounding box.\n *\n * @returns {number} The west edge of the bounding box.\n */\n getWest(): number { return this._sw.lng; }\n\n /**\n * Returns the south edge of the bounding box.\n *\n * @returns {number} The south edge of the bounding box.\n */\n getSouth(): number { return this._sw.lat; }\n\n /**\n * Returns the east edge of the bounding box.\n *\n * @returns {number} The east edge of the bounding box.\n */\n getEast(): number { return this._ne.lng; }\n\n /**\n * Returns the north edge of the bounding box.\n *\n * @returns {number} The north edge of the bounding box.\n */\n getNorth(): number { return this._ne.lat; }\n\n /**\n * Returns the bounding box represented as an array.\n *\n * @returns {Array>} The bounding box represented as an array, consisting of the\n * southwest and northeast coordinates of the bounding represented as arrays of numbers.\n * @example\n * var llb = new mapboxgl.LngLatBounds([-73.9876, 40.7661], [-73.9397, 40.8002]);\n * llb.toArray(); // = [[-73.9876, 40.7661], [-73.9397, 40.8002]]\n */\n toArray() {\n return [this._sw.toArray(), this._ne.toArray()];\n }\n\n /**\n * Return the bounding box represented as a string.\n *\n * @returns {string} The bounding box represents as a string of the format\n * `'LngLatBounds(LngLat(lng, lat), LngLat(lng, lat))'`.\n * @example\n * var llb = new mapboxgl.LngLatBounds([-73.9876, 40.7661], [-73.9397, 40.8002]);\n * llb.toString(); // = \"LngLatBounds(LngLat(-73.9876, 40.7661), LngLat(-73.9397, 40.8002))\"\n */\n toString() {\n return `LngLatBounds(${this._sw.toString()}, ${this._ne.toString()})`;\n }\n\n /**\n * Check if the bounding box is an empty/`null`-type box.\n *\n * @returns {boolean} True if bounds have been defined, otherwise false.\n */\n isEmpty() {\n return !(this._sw && this._ne);\n }\n\n /**\n * Check if the point is within the bounding box.\n *\n * @param {LngLatLike} lnglat geographic point to check against.\n * @returns {boolean} True if the point is within the bounding box.\n * @example\n * var llb = new mapboxgl.LngLatBounds(\n * new mapboxgl.LngLat(-73.9876, 40.7661),\n * new mapboxgl.LngLat(-73.9397, 40.8002)\n * );\n *\n * var ll = new mapboxgl.LngLat(-73.9567, 40.7789);\n *\n * console.log(llb.contains(ll)); // = true\n */\n contains(lnglat: LngLatLike) {\n const {lng, lat} = LngLat.convert(lnglat);\n\n const containsLatitude = this._sw.lat <= lat && lat <= this._ne.lat;\n let containsLongitude = this._sw.lng <= lng && lng <= this._ne.lng;\n if (this._sw.lng > this._ne.lng) { // wrapped coordinates\n containsLongitude = this._sw.lng >= lng && lng >= this._ne.lng;\n }\n\n return containsLatitude && containsLongitude;\n }\n\n /**\n * Converts an array to a `LngLatBounds` object.\n *\n * If a `LngLatBounds` object is passed in, the function returns it unchanged.\n *\n * Internally, the function calls `LngLat#convert` to convert arrays to `LngLat` values.\n *\n * @param {LngLatBoundsLike} input An array of two coordinates to convert, or a `LngLatBounds` object to return.\n * @returns {LngLatBounds} A new `LngLatBounds` object, if a conversion occurred, or the original `LngLatBounds` object.\n * @example\n * var arr = [[-73.9876, 40.7661], [-73.9397, 40.8002]];\n * var llb = mapboxgl.LngLatBounds.convert(arr);\n * llb; // = LngLatBounds {_sw: LngLat {lng: -73.9876, lat: 40.7661}, _ne: LngLat {lng: -73.9397, lat: 40.8002}}\n */\n static convert(input: LngLatBoundsLike): LngLatBounds {\n if (!input || input instanceof LngLatBounds) return input;\n return new LngLatBounds(input);\n }\n}\n\n/**\n * A {@link LngLatBounds} object, an array of {@link LngLatLike} objects in [sw, ne] order,\n * or an array of numbers in [west, south, east, north] order.\n *\n * @typedef {LngLatBounds | [LngLatLike, LngLatLike] | [number, number, number, number]} LngLatBoundsLike\n * @example\n * var v1 = new mapboxgl.LngLatBounds(\n * new mapboxgl.LngLat(-73.9876, 40.7661),\n * new mapboxgl.LngLat(-73.9397, 40.8002)\n * );\n * var v2 = new mapboxgl.LngLatBounds([-73.9876, 40.7661], [-73.9397, 40.8002])\n * var v3 = [[-73.9876, 40.7661], [-73.9397, 40.8002]];\n */\nexport type LngLatBoundsLike = LngLatBounds | [LngLatLike, LngLatLike] | [number, number, number, number];\n\nexport default LngLatBounds;\n", "// @flow\n\nimport {wrap} from '../util/util';\nimport LngLatBounds from './lng_lat_bounds';\n\n/*\n* Approximate radius of the earth in meters.\n* Uses the WGS-84 approximation. The radius at the equator is ~6378137 and at the poles is ~6356752. https://en.wikipedia.org/wiki/World_Geodetic_System#WGS84\n* 6371008.8 is one published \"average radius\" see https://en.wikipedia.org/wiki/Earth_radius#Mean_radius, or ftp://athena.fsv.cvut.cz/ZFG/grs80-Moritz.pdf p.4\n*/\nexport const earthRadius = 6371008.8;\n\n/**\n * A `LngLat` object represents a given longitude and latitude coordinate, measured in degrees.\n * These coordinates are based on the [WGS84 (EPSG:4326) standard](https://en.wikipedia.org/wiki/World_Geodetic_System#WGS84).\n *\n * Mapbox GL uses longitude, latitude coordinate order (as opposed to latitude, longitude) to match the\n * [GeoJSON specification](https://tools.ietf.org/html/rfc7946).\n *\n * Note that any Mapbox GL method that accepts a `LngLat` object as an argument or option\n * can also accept an `Array` of two numbers and will perform an implicit conversion.\n * This flexible type is documented as {@link LngLatLike}.\n *\n * @param {number} lng Longitude, measured in degrees.\n * @param {number} lat Latitude, measured in degrees.\n * @example\n * var ll = new mapboxgl.LngLat(-123.9749, 40.7736);\n * ll.lng; // = -123.9749\n * @see [Get coordinates of the mouse pointer](https://www.mapbox.com/mapbox-gl-js/example/mouse-position/)\n * @see [Display a popup](https://www.mapbox.com/mapbox-gl-js/example/popup/)\n * @see [Highlight features within a bounding box](https://www.mapbox.com/mapbox-gl-js/example/using-box-queryrenderedfeatures/)\n * @see [Create a timeline animation](https://www.mapbox.com/mapbox-gl-js/example/timeline-animation/)\n */\nclass LngLat {\n lng: number;\n lat: number;\n\n constructor(lng: number, lat: number) {\n if (isNaN(lng) || isNaN(lat)) {\n throw new Error(`Invalid LngLat object: (${lng}, ${lat})`);\n }\n this.lng = +lng;\n this.lat = +lat;\n if (this.lat > 90 || this.lat < -90) {\n throw new Error('Invalid LngLat latitude value: must be between -90 and 90');\n }\n }\n\n /**\n * Returns a new `LngLat` object whose longitude is wrapped to the range (-180, 180).\n *\n * @returns {LngLat} The wrapped `LngLat` object.\n * @example\n * var ll = new mapboxgl.LngLat(286.0251, 40.7736);\n * var wrapped = ll.wrap();\n * wrapped.lng; // = -73.9749\n */\n wrap() {\n return new LngLat(wrap(this.lng, -180, 180), this.lat);\n }\n\n /**\n * Returns the coordinates represented as an array of two numbers.\n *\n * @returns {Array} The coordinates represeted as an array of longitude and latitude.\n * @example\n * var ll = new mapboxgl.LngLat(-73.9749, 40.7736);\n * ll.toArray(); // = [-73.9749, 40.7736]\n */\n toArray() {\n return [this.lng, this.lat];\n }\n\n /**\n * Returns the coordinates represent as a string.\n *\n * @returns {string} The coordinates represented as a string of the format `'LngLat(lng, lat)'`.\n * @example\n * var ll = new mapboxgl.LngLat(-73.9749, 40.7736);\n * ll.toString(); // = \"LngLat(-73.9749, 40.7736)\"\n */\n toString() {\n return `LngLat(${this.lng}, ${this.lat})`;\n }\n\n /**\n * Returns the approximate distance between a pair of coordinates in meters\n * Uses the Haversine Formula (from R.W. Sinnott, \"Virtues of the Haversine\", Sky and Telescope, vol. 68, no. 2, 1984, p. 159)\n *\n * @param {LngLat} lngLat coordinates to compute the distance to\n * @returns {number} Distance in meters between the two coordinates.\n * @example\n * var new_york = new mapboxgl.LngLat(-74.0060, 40.7128);\n * var los_angeles = new mapboxgl.LngLat(-118.2437, 34.0522);\n * new_york.distanceTo(los_angeles); // = 3935751.690893987, \"true distance\" using a non-spherical approximation is ~3966km\n */\n distanceTo(lngLat: LngLat) {\n const rad = Math.PI / 180;\n const lat1 = this.lat * rad;\n const lat2 = lngLat.lat * rad;\n const a = Math.sin(lat1) * Math.sin(lat2) + Math.cos(lat1) * Math.cos(lat2) * Math.cos((lngLat.lng - this.lng) * rad);\n\n const maxMeters = earthRadius * Math.acos(Math.min(a, 1));\n return maxMeters;\n }\n\n /**\n * Returns a `LngLatBounds` from the coordinates extended by a given `radius`. The returned `LngLatBounds` completely contains the `radius`.\n *\n * @param {number} [radius=0] Distance in meters from the coordinates to extend the bounds.\n * @returns {LngLatBounds} A new `LngLatBounds` object representing the coordinates extended by the `radius`.\n * @example\n * var ll = new mapboxgl.LngLat(-73.9749, 40.7736);\n * ll.toBounds(100).toArray(); // = [[-73.97501862141328, 40.77351016847229], [-73.97478137858673, 40.77368983152771]]\n */\n toBounds(radius?: number = 0) {\n const earthCircumferenceInMetersAtEquator = 40075017;\n const latAccuracy = 360 * radius / earthCircumferenceInMetersAtEquator,\n lngAccuracy = latAccuracy / Math.cos((Math.PI / 180) * this.lat);\n\n return new LngLatBounds(new LngLat(this.lng - lngAccuracy, this.lat - latAccuracy),\n new LngLat(this.lng + lngAccuracy, this.lat + latAccuracy));\n }\n\n /**\n * Converts an array of two numbers or an object with `lng` and `lat` or `lon` and `lat` properties\n * to a `LngLat` object.\n *\n * If a `LngLat` object is passed in, the function returns it unchanged.\n *\n * @param {LngLatLike} input An array of two numbers or object to convert, or a `LngLat` object to return.\n * @returns {LngLat} A new `LngLat` object, if a conversion occurred, or the original `LngLat` object.\n * @example\n * var arr = [-73.9749, 40.7736];\n * var ll = mapboxgl.LngLat.convert(arr);\n * ll; // = LngLat {lng: -73.9749, lat: 40.7736}\n */\n static convert(input: LngLatLike): LngLat {\n if (input instanceof LngLat) {\n return input;\n }\n if (Array.isArray(input) && (input.length === 2 || input.length === 3)) {\n return new LngLat(Number(input[0]), Number(input[1]));\n }\n if (!Array.isArray(input) && typeof input === 'object' && input !== null) {\n return new LngLat(\n // flow can't refine this to have one of lng or lat, so we have to cast to any\n Number('lng' in input ? (input: any).lng : (input: any).lon),\n Number(input.lat)\n );\n }\n throw new Error(\"`LngLatLike` argument must be specified as a LngLat instance, an object {lng: , lat: }, an object {lon: , lat: }, or an array of [, ]\");\n }\n}\n\n/**\n * A {@link LngLat} object, an array of two numbers representing longitude and latitude,\n * or an object with `lng` and `lat` or `lon` and `lat` properties.\n *\n * @typedef {LngLat | {lng: number, lat: number} | {lon: number, lat: number} | [number, number]} LngLatLike\n * @example\n * var v1 = new mapboxgl.LngLat(-122.420679, 37.772537);\n * var v2 = [-122.420679, 37.772537];\n * var v3 = {lon: -122.420679, lat: 37.772537};\n */\nexport type LngLatLike = LngLat | {lng: number, lat: number} | {lon: number, lat: number} | [number, number];\n\nexport default LngLat;\n", "// @flow\n\nimport LngLat, {earthRadius} from '../geo/lng_lat';\nimport type {LngLatLike} from '../geo/lng_lat';\n\n/*\n * The average circumference of the world in meters.\n */\nconst earthCircumfrence = 2 * Math.PI * earthRadius; // meters\n\n/*\n * The circumference at a line of latitude in meters.\n */\nfunction circumferenceAtLatitude(latitude: number) {\n return earthCircumfrence * Math.cos(latitude * Math.PI / 180);\n}\n\nexport function mercatorXfromLng(lng: number) {\n return (180 + lng) / 360;\n}\n\nexport function mercatorYfromLat(lat: number) {\n return (180 - (180 / Math.PI * Math.log(Math.tan(Math.PI / 4 + lat * Math.PI / 360)))) / 360;\n}\n\nexport function mercatorZfromAltitude(altitude: number, lat: number) {\n return altitude / circumferenceAtLatitude(lat);\n}\n\nexport function lngFromMercatorX(x: number) {\n return x * 360 - 180;\n}\n\nexport function latFromMercatorY(y: number) {\n const y2 = 180 - y * 360;\n return 360 / Math.PI * Math.atan(Math.exp(y2 * Math.PI / 180)) - 90;\n}\n\nexport function altitudeFromMercatorZ(z: number, y: number) {\n return z * circumferenceAtLatitude(latFromMercatorY(y));\n}\n\n/**\n * Determine the Mercator scale factor for a given latitude, see\n * https://en.wikipedia.org/wiki/Mercator_projection#Scale_factor\n *\n * At the equator the scale factor will be 1, which increases at higher latitudes.\n *\n * @param {number} lat Latitude\n * @returns {number} scale factor\n * @private\n */\nexport function mercatorScale(lat: number) {\n return 1 / Math.cos(lat * Math.PI / 180);\n}\n\n/**\n * A `MercatorCoordinate` object represents a projected three dimensional position.\n *\n * `MercatorCoordinate` uses the web mercator projection ([EPSG:3857](https://epsg.io/3857)) with slightly different units:\n * - the size of 1 unit is the width of the projected world instead of the \"mercator meter\"\n * - the origin of the coordinate space is at the north-west corner instead of the middle\n *\n * For example, `MercatorCoordinate(0, 0, 0)` is the north-west corner of the mercator world and\n * `MercatorCoordinate(1, 1, 0)` is the south-east corner. If you are familiar with\n * [vector tiles](https://github.com/mapbox/vector-tile-spec) it may be helpful to think\n * of the coordinate space as the `0/0/0` tile with an extent of `1`.\n *\n * The `z` dimension of `MercatorCoordinate` is conformal. A cube in the mercator coordinate space would be rendered as a cube.\n *\n * @param {number} x The x component of the position.\n * @param {number} y The y component of the position.\n * @param {number} z The z component of the position.\n * @example\n * var nullIsland = new mapboxgl.MercatorCoordinate(0.5, 0.5, 0);\n *\n * @see [Add a custom style layer](https://www.mapbox.com/mapbox-gl-js/example/custom-style-layer/)\n */\nclass MercatorCoordinate {\n x: number;\n y: number;\n z: number;\n\n constructor(x: number, y: number, z: number = 0) {\n this.x = +x;\n this.y = +y;\n this.z = +z;\n }\n\n /**\n * Project a `LngLat` to a `MercatorCoordinate`.\n *\n * @param {LngLatLike} lngLatLike The location to project.\n * @param {number} altitude The altitude in meters of the position.\n * @returns {MercatorCoordinate} The projected mercator coordinate.\n * @example\n * var coord = mapboxgl.MercatorCoordinate.fromLngLat({ lng: 0, lat: 0}, 0);\n * coord; // MercatorCoordinate(0.5, 0.5, 0)\n */\n static fromLngLat(lngLatLike: LngLatLike, altitude: number = 0) {\n const lngLat = LngLat.convert(lngLatLike);\n\n return new MercatorCoordinate(\n mercatorXfromLng(lngLat.lng),\n mercatorYfromLat(lngLat.lat),\n mercatorZfromAltitude(altitude, lngLat.lat));\n }\n\n /**\n * Returns the `LngLat` for the coordinate.\n *\n * @returns {LngLat} The `LngLat` object.\n * @example\n * var coord = new mapboxgl.MercatorCoordinate(0.5, 0.5, 0);\n * var lngLat = coord.toLngLat(); // LngLat(0, 0)\n */\n toLngLat() {\n return new LngLat(\n lngFromMercatorX(this.x),\n latFromMercatorY(this.y));\n }\n\n /**\n * Returns the altitude in meters of the coordinate.\n *\n * @returns {number} The altitude in meters.\n * @example\n * var coord = new mapboxgl.MercatorCoordinate(0, 0, 0.02);\n * coord.toAltitude(); // 6914.281956295339\n */\n toAltitude() {\n return altitudeFromMercatorZ(this.z, this.y);\n }\n\n /**\n * Returns the distance of 1 meter in `MercatorCoordinate` units at this latitude.\n *\n * For coordinates in real world units using meters, this naturally provides the scale\n * to transform into `MercatorCoordinate`s.\n *\n * @returns {number} Distance of 1 meter in `MercatorCoordinate` units.\n */\n meterInMercatorCoordinateUnits() {\n // 1 meter / circumference at equator in meters * Mercator projection scale factor at this latitude\n return 1 / earthCircumfrence * mercatorScale(latFromMercatorY(this.y));\n }\n\n}\n\nexport default MercatorCoordinate;\n", "// @flow\n\nimport {getTileBBox} from '@mapbox/whoots-js';\nimport EXTENT from '../data/extent';\nimport Point from '@mapbox/point-geometry';\nimport MercatorCoordinate from '../geo/mercator_coordinate';\n\nimport assert from 'assert';\nimport {register} from '../util/web_worker_transfer';\n\nexport class CanonicalTileID {\n z: number;\n x: number;\n y: number;\n key: string;\n\n constructor(z: number, x: number, y: number) {\n assert(z >= 0 && z <= 25);\n assert(x >= 0 && x < Math.pow(2, z));\n assert(y >= 0 && y < Math.pow(2, z));\n this.z = z;\n this.x = x;\n this.y = y;\n this.key = calculateKey(0, z, z, x, y);\n }\n\n equals(id: CanonicalTileID) {\n return this.z === id.z && this.x === id.x && this.y === id.y;\n }\n\n // given a list of urls, choose a url template and return a tile URL\n url(urls: Array, scheme: ?string) {\n const bbox = getTileBBox(this.x, this.y, this.z);\n const quadkey = getQuadkey(this.z, this.x, this.y);\n\n return urls[(this.x + this.y) % urls.length]\n .replace('{prefix}', (this.x % 16).toString(16) + (this.y % 16).toString(16))\n .replace('{z}', String(this.z))\n .replace('{x}', String(this.x))\n .replace('{y}', String(scheme === 'tms' ? (Math.pow(2, this.z) - this.y - 1) : this.y))\n .replace('{quadkey}', quadkey)\n .replace('{bbox-epsg-3857}', bbox);\n }\n\n getTilePoint(coord: MercatorCoordinate) {\n const tilesAtZoom = Math.pow(2, this.z);\n return new Point(\n (coord.x * tilesAtZoom - this.x) * EXTENT,\n (coord.y * tilesAtZoom - this.y) * EXTENT);\n }\n\n toString() {\n return `${this.z}/${this.x}/${this.y}`;\n }\n}\n\nexport class UnwrappedTileID {\n wrap: number;\n canonical: CanonicalTileID;\n key: string;\n\n constructor(wrap: number, canonical: CanonicalTileID) {\n this.wrap = wrap;\n this.canonical = canonical;\n this.key = calculateKey(wrap, canonical.z, canonical.z, canonical.x, canonical.y);\n }\n}\n\nexport class OverscaledTileID {\n overscaledZ: number;\n wrap: number;\n canonical: CanonicalTileID;\n key: string;\n posMatrix: Float32Array;\n\n constructor(overscaledZ: number, wrap: number, z: number, x: number, y: number) {\n assert(overscaledZ >= z);\n this.overscaledZ = overscaledZ;\n this.wrap = wrap;\n this.canonical = new CanonicalTileID(z, +x, +y);\n this.key = calculateKey(wrap, overscaledZ, z, x, y);\n }\n\n equals(id: OverscaledTileID) {\n return this.overscaledZ === id.overscaledZ && this.wrap === id.wrap && this.canonical.equals(id.canonical);\n }\n\n scaledTo(targetZ: number) {\n assert(targetZ <= this.overscaledZ);\n const zDifference = this.canonical.z - targetZ;\n if (targetZ > this.canonical.z) {\n return new OverscaledTileID(targetZ, this.wrap, this.canonical.z, this.canonical.x, this.canonical.y);\n } else {\n return new OverscaledTileID(targetZ, this.wrap, targetZ, this.canonical.x >> zDifference, this.canonical.y >> zDifference);\n }\n }\n\n /*\n * calculateScaledKey is an optimization:\n * when withWrap == true, implements the same as this.scaledTo(z).key,\n * when withWrap == false, implements the same as this.scaledTo(z).wrapped().key.\n */\n calculateScaledKey(targetZ: number, withWrap: boolean): string {\n assert(targetZ <= this.overscaledZ);\n const zDifference = this.canonical.z - targetZ;\n if (targetZ > this.canonical.z) {\n return calculateKey(this.wrap * +withWrap, targetZ, this.canonical.z, this.canonical.x, this.canonical.y);\n } else {\n return calculateKey(this.wrap * +withWrap, targetZ, targetZ, this.canonical.x >> zDifference, this.canonical.y >> zDifference);\n }\n }\n\n isChildOf(parent: OverscaledTileID) {\n if (parent.wrap !== this.wrap) {\n // We can't be a child if we're in a different world copy\n return false;\n }\n const zDifference = this.canonical.z - parent.canonical.z;\n // We're first testing for z == 0, to avoid a 32 bit shift, which is undefined.\n return parent.overscaledZ === 0 || (\n parent.overscaledZ < this.overscaledZ &&\n parent.canonical.x === (this.canonical.x >> zDifference) &&\n parent.canonical.y === (this.canonical.y >> zDifference));\n }\n\n children(sourceMaxZoom: number) {\n if (this.overscaledZ >= sourceMaxZoom) {\n // return a single tile coord representing a an overscaled tile\n return [new OverscaledTileID(this.overscaledZ + 1, this.wrap, this.canonical.z, this.canonical.x, this.canonical.y)];\n }\n\n const z = this.canonical.z + 1;\n const x = this.canonical.x * 2;\n const y = this.canonical.y * 2;\n return [\n new OverscaledTileID(z, this.wrap, z, x, y),\n new OverscaledTileID(z, this.wrap, z, x + 1, y),\n new OverscaledTileID(z, this.wrap, z, x, y + 1),\n new OverscaledTileID(z, this.wrap, z, x + 1, y + 1)\n ];\n }\n\n isLessThan(rhs: OverscaledTileID) {\n if (this.wrap < rhs.wrap) return true;\n if (this.wrap > rhs.wrap) return false;\n\n if (this.overscaledZ < rhs.overscaledZ) return true;\n if (this.overscaledZ > rhs.overscaledZ) return false;\n\n if (this.canonical.x < rhs.canonical.x) return true;\n if (this.canonical.x > rhs.canonical.x) return false;\n\n if (this.canonical.y < rhs.canonical.y) return true;\n return false;\n }\n\n wrapped() {\n return new OverscaledTileID(this.overscaledZ, 0, this.canonical.z, this.canonical.x, this.canonical.y);\n }\n\n unwrapTo(wrap: number) {\n return new OverscaledTileID(this.overscaledZ, wrap, this.canonical.z, this.canonical.x, this.canonical.y);\n }\n\n overscaleFactor() {\n return Math.pow(2, this.overscaledZ - this.canonical.z);\n }\n\n toUnwrapped() {\n return new UnwrappedTileID(this.wrap, this.canonical);\n }\n\n toString() {\n return `${this.overscaledZ}/${this.canonical.x}/${this.canonical.y}`;\n }\n\n getTilePoint(coord: MercatorCoordinate) {\n return this.canonical.getTilePoint(new MercatorCoordinate(coord.x - this.wrap, coord.y));\n }\n}\n\nfunction calculateKey(wrap: number, overscaledZ: number, z: number, x: number, y: number): string {\n wrap *= 2;\n if (wrap < 0) wrap = wrap * -1 - 1;\n const dim = 1 << z;\n return (dim * dim * wrap + dim * y + x).toString(36) + z.toString(36) + overscaledZ.toString(36);\n}\n\nfunction getQuadkey(z, x, y) {\n let quadkey = '', mask;\n for (let i = z; i > 0; i--) {\n mask = 1 << (i - 1);\n quadkey += ((x & mask ? 1 : 0) + (y & mask ? 2 : 0));\n }\n return quadkey;\n}\n\nregister('CanonicalTileID', CanonicalTileID);\nregister('OverscaledTileID', OverscaledTileID, {omit: ['posMatrix']});\n", "// @flow\nimport {RGBAImage} from '../util/image';\n\nimport {warnOnce} from '../util/util';\nimport {register} from '../util/web_worker_transfer';\n\n// DEMData is a data structure for decoding, backfilling, and storing elevation data for processing in the hillshade shaders\n// data can be populated either from a pngraw image tile or from serliazed data sent back from a worker. When data is initially\n// loaded from a image tile, we decode the pixel values using the appropriate decoding formula, but we store the\n// elevation data as an Int32 value. we add 65536 (2^16) to eliminate negative values and enable the use of\n// integer overflow when creating the texture used in the hillshadePrepare step.\n\n// DEMData also handles the backfilling of data from a tile's neighboring tiles. This is necessary because we use a pixel's 8\n// surrounding pixel values to compute the slope at that pixel, and we cannot accurately calculate the slope at pixels on a\n// tile's edge without backfilling from neighboring tiles.\n\nexport default class DEMData {\n uid: string;\n data: Uint32Array;\n stride: number;\n dim: number;\n encoding: \"mapbox\" | \"terrarium\";\n\n // RGBAImage data has uniform 1px padding on all sides: square tile edge size defines stride\n // and dim is calculated as stride - 2.\n constructor(uid: string, data: RGBAImage, encoding: \"mapbox\" | \"terrarium\") {\n this.uid = uid;\n if (data.height !== data.width) throw new RangeError('DEM tiles must be square');\n if (encoding && encoding !== \"mapbox\" && encoding !== \"terrarium\") return warnOnce(\n `\"${encoding}\" is not a valid encoding type. Valid types include \"mapbox\" and \"terrarium\".`\n );\n this.stride = data.height;\n const dim = this.dim = data.height - 2;\n this.data = new Uint32Array(data.data.buffer);\n this.encoding = encoding || 'mapbox';\n\n // in order to avoid flashing seams between tiles, here we are initially populating a 1px border of pixels around the image\n // with the data of the nearest pixel from the image. this data is eventually replaced when the tile's neighboring\n // tiles are loaded and the accurate data can be backfilled using DEMData#backfillBorder\n for (let x = 0; x < dim; x++) {\n // left vertical border\n this.data[this._idx(-1, x)] = this.data[this._idx(0, x)];\n // right vertical border\n this.data[this._idx(dim, x)] = this.data[this._idx(dim - 1, x)];\n // left horizontal border\n this.data[this._idx(x, -1)] = this.data[this._idx(x, 0)];\n // right horizontal border\n this.data[this._idx(x, dim)] = this.data[this._idx(x, dim - 1)];\n }\n // corners\n this.data[this._idx(-1, -1)] = this.data[this._idx(0, 0)];\n this.data[this._idx(dim, -1)] = this.data[this._idx(dim - 1, 0)];\n this.data[this._idx(-1, dim)] = this.data[this._idx(0, dim - 1)];\n this.data[this._idx(dim, dim)] = this.data[this._idx(dim - 1, dim - 1)];\n }\n\n get(x: number, y: number) {\n const pixels = new Uint8Array(this.data.buffer);\n const index = this._idx(x, y) * 4;\n const unpack = this.encoding === \"terrarium\" ? this._unpackTerrarium : this._unpackMapbox;\n return unpack(pixels[index], pixels[index + 1], pixels[index + 2]);\n }\n\n getUnpackVector() {\n return this.encoding === \"terrarium\" ? [256.0, 1.0, 1.0 / 256.0, 32768.0] : [6553.6, 25.6, 0.1, 10000.0];\n }\n\n _idx(x: number, y: number) {\n if (x < -1 || x >= this.dim + 1 || y < -1 || y >= this.dim + 1) throw new RangeError('out of range source coordinates for DEM data');\n return (y + 1) * this.stride + (x + 1);\n }\n\n _unpackMapbox(r: number, g: number, b: number) {\n // unpacking formula for mapbox.terrain-rgb:\n // https://www.mapbox.com/help/access-elevation-data/#mapbox-terrain-rgb\n return ((r * 256 * 256 + g * 256.0 + b) / 10.0 - 10000.0);\n }\n\n _unpackTerrarium(r: number, g: number, b: number) {\n // unpacking formula for mapzen terrarium:\n // https://aws.amazon.com/public-datasets/terrain/\n return ((r * 256 + g + b / 256) - 32768.0);\n }\n\n getPixels() {\n return new RGBAImage({width: this.stride, height: this.stride}, new Uint8Array(this.data.buffer));\n }\n\n backfillBorder(borderTile: DEMData, dx: number, dy: number) {\n if (this.dim !== borderTile.dim) throw new Error('dem dimension mismatch');\n\n let xMin = dx * this.dim,\n xMax = dx * this.dim + this.dim,\n yMin = dy * this.dim,\n yMax = dy * this.dim + this.dim;\n\n switch (dx) {\n case -1:\n xMin = xMax - 1;\n break;\n case 1:\n xMax = xMin + 1;\n break;\n }\n\n switch (dy) {\n case -1:\n yMin = yMax - 1;\n break;\n case 1:\n yMax = yMin + 1;\n break;\n }\n\n const ox = -dx * this.dim;\n const oy = -dy * this.dim;\n for (let y = yMin; y < yMax; y++) {\n for (let x = xMin; x < xMax; x++) {\n this.data[this._idx(x, y)] = borderTile.data[this._idx(x + ox, y + oy)];\n }\n }\n }\n}\n\nregister('DEMData', DEMData);\n", "// @flow strict\n\nimport assert from 'assert';\n\nclass DictionaryCoder {\n _stringToNumber: {[_: string]: number };\n _numberToString: Array;\n\n constructor(strings: Array) {\n this._stringToNumber = {};\n this._numberToString = [];\n for (let i = 0; i < strings.length; i++) {\n const string = strings[i];\n this._stringToNumber[string] = i;\n this._numberToString[i] = string;\n }\n }\n\n encode(string: string) {\n assert(string in this._stringToNumber);\n return this._stringToNumber[string];\n }\n\n decode(n: number) {\n assert(n < this._numberToString.length);\n return this._numberToString[n];\n }\n}\n\nexport default DictionaryCoder;\n", "// @flow\nimport type {GeoJSONGeometry} from '@mapbox/geojson-types';\n\nclass Feature {\n type: 'Feature';\n _geometry: ?GeoJSONGeometry;\n properties: {};\n id: number | string | void;\n\n _vectorTileFeature: VectorTileFeature;\n\n constructor(vectorTileFeature: VectorTileFeature, z: number, x: number, y: number, id: string | number | void) {\n this.type = 'Feature';\n\n this._vectorTileFeature = vectorTileFeature;\n (vectorTileFeature: any)._z = z;\n (vectorTileFeature: any)._x = x;\n (vectorTileFeature: any)._y = y;\n\n this.properties = vectorTileFeature.properties;\n this.id = id;\n }\n\n get geometry(): ?GeoJSONGeometry {\n if (this._geometry === undefined) {\n this._geometry = this._vectorTileFeature.toGeoJSON(\n (this._vectorTileFeature: any)._x,\n (this._vectorTileFeature: any)._y,\n (this._vectorTileFeature: any)._z).geometry;\n }\n return this._geometry;\n }\n\n set geometry(g: ?GeoJSONGeometry) {\n this._geometry = g;\n }\n\n toJSON() {\n const json = {\n geometry: this.geometry\n };\n for (const i in this) {\n if (i === '_geometry' || i === '_vectorTileFeature') continue;\n json[i] = (this: any)[i];\n }\n return json;\n }\n}\n\nexport default Feature;\n", "// @flow\n\nimport {extend} from '../util/util';\nimport Tile from './tile';\nimport type {FeatureState} from '../style-spec/expression';\n\nexport type FeatureStates = {[feature_id: string]: FeatureState};\nexport type LayerFeatureStates = {[layer: string]: FeatureStates};\n\n/**\n * SourceFeatureState manages the state and pending changes\n * to features in a source, separated by source layer.\n * stateChanges and deletedStates batch all changes to the tile (updates and removes, respectively)\n * between coalesce() events. addFeatureState() and removeFeatureState() also update their counterpart's\n * list of changes, such that coalesce() can apply the proper state changes while agnostic to the order of operations.\n * In deletedStates, all null's denote complete removal of state at that scope\n * @private\n*/\nclass SourceFeatureState {\n state: LayerFeatureStates;\n stateChanges: LayerFeatureStates;\n deletedStates: {};\n\n constructor() {\n this.state = {};\n this.stateChanges = {};\n this.deletedStates = {};\n }\n\n updateState(sourceLayer: string, featureId: number | string, newState: Object) {\n const feature = String(featureId);\n this.stateChanges[sourceLayer] = this.stateChanges[sourceLayer] || {};\n this.stateChanges[sourceLayer][feature] = this.stateChanges[sourceLayer][feature] || {};\n extend(this.stateChanges[sourceLayer][feature], newState);\n\n if (this.deletedStates[sourceLayer] === null) {\n this.deletedStates[sourceLayer] = {};\n for (const ft in this.state[sourceLayer]) {\n if (ft !== feature) this.deletedStates[sourceLayer][ft] = null;\n }\n } else {\n const featureDeletionQueued = this.deletedStates[sourceLayer] && this.deletedStates[sourceLayer][feature] === null;\n if (featureDeletionQueued) {\n this.deletedStates[sourceLayer][feature] = {};\n for (const prop in this.state[sourceLayer][feature]) {\n if (!newState[prop]) this.deletedStates[sourceLayer][feature][prop] = null;\n }\n } else {\n for (const key in newState) {\n const deletionInQueue = this.deletedStates[sourceLayer] && this.deletedStates[sourceLayer][feature] && this.deletedStates[sourceLayer][feature][key] === null;\n if (deletionInQueue) delete this.deletedStates[sourceLayer][feature][key];\n }\n }\n }\n }\n\n removeFeatureState(sourceLayer: string, featureId?: number | string, key?: string) {\n const sourceLayerDeleted = this.deletedStates[sourceLayer] === null;\n if (sourceLayerDeleted) return;\n\n const feature = String(featureId);\n\n this.deletedStates[sourceLayer] = this.deletedStates[sourceLayer] || {};\n\n if (key && featureId !== undefined) {\n if (this.deletedStates[sourceLayer][feature] !== null) {\n this.deletedStates[sourceLayer][feature] = this.deletedStates[sourceLayer][feature] || {};\n this.deletedStates[sourceLayer][feature][key] = null;\n }\n } else if (featureId !== undefined) {\n const updateInQueue = this.stateChanges[sourceLayer] && this.stateChanges[sourceLayer][feature];\n if (updateInQueue) {\n this.deletedStates[sourceLayer][feature] = {};\n for (key in this.stateChanges[sourceLayer][feature]) this.deletedStates[sourceLayer][feature][key] = null;\n\n } else {\n this.deletedStates[sourceLayer][feature] = null;\n }\n } else {\n this.deletedStates[sourceLayer] = null;\n }\n\n }\n\n getState(sourceLayer: string, featureId: number | string) {\n const feature = String(featureId);\n const base = this.state[sourceLayer] || {};\n const changes = this.stateChanges[sourceLayer] || {};\n\n const reconciledState = extend({}, base[feature], changes[feature]);\n\n //return empty object if the whole source layer is awaiting deletion\n if (this.deletedStates[sourceLayer] === null) return {};\n else if (this.deletedStates[sourceLayer]) {\n const featureDeletions = this.deletedStates[sourceLayer][featureId];\n if (featureDeletions === null) return {};\n for (const prop in featureDeletions) delete reconciledState[prop];\n }\n return reconciledState;\n }\n\n initializeTileState(tile: Tile, painter: any) {\n tile.setFeatureState(this.state, painter);\n }\n\n coalesceChanges(tiles: {[_: any]: Tile}, painter: any) {\n //track changes with full state objects, but only for features that got modified\n const featuresChanged: LayerFeatureStates = {};\n\n for (const sourceLayer in this.stateChanges) {\n this.state[sourceLayer] = this.state[sourceLayer] || {};\n const layerStates = {};\n for (const feature in this.stateChanges[sourceLayer]) {\n if (!this.state[sourceLayer][feature]) this.state[sourceLayer][feature] = {};\n extend(this.state[sourceLayer][feature], this.stateChanges[sourceLayer][feature]);\n layerStates[feature] = this.state[sourceLayer][feature];\n }\n featuresChanged[sourceLayer] = layerStates;\n }\n\n for (const sourceLayer in this.deletedStates) {\n this.state[sourceLayer] = this.state[sourceLayer] || {};\n const layerStates = {};\n\n if (this.deletedStates[sourceLayer] === null) {\n for (const ft in this.state[sourceLayer]) {\n layerStates[ft] = {};\n this.state[sourceLayer][ft] = {};\n }\n } else {\n for (const feature in this.deletedStates[sourceLayer]) {\n const deleteWholeFeatureState = this.deletedStates[sourceLayer][feature] === null;\n if (deleteWholeFeatureState) this.state[sourceLayer][feature] = {};\n else {\n for (const key of Object.keys(this.deletedStates[sourceLayer][feature])) {\n delete this.state[sourceLayer][feature][key];\n }\n }\n layerStates[feature] = this.state[sourceLayer][feature];\n }\n }\n\n featuresChanged[sourceLayer] = featuresChanged[sourceLayer] || {};\n extend(featuresChanged[sourceLayer], layerStates);\n }\n\n this.stateChanges = {};\n this.deletedStates = {};\n\n if (Object.keys(featuresChanged).length === 0) return;\n\n for (const id in tiles) {\n const tile = tiles[id];\n tile.setFeatureState(featuresChanged, painter);\n }\n }\n}\n\nexport default SourceFeatureState;\n", "// @flow\n\nimport Point from '@mapbox/point-geometry';\n\nimport loadGeometry from './load_geometry';\nimport toEvaluationFeature from './evaluation_feature';\nimport EXTENT from './extent';\nimport featureFilter from '../style-spec/feature_filter';\nimport Grid from 'grid-index';\nimport DictionaryCoder from '../util/dictionary_coder';\nimport vt from '@mapbox/vector-tile';\nimport Protobuf from 'pbf';\nimport GeoJSONFeature from '../util/vectortile_to_geojson';\nimport {arraysIntersect, mapObject, extend} from '../util/util';\nimport {OverscaledTileID} from '../source/tile_id';\nimport {register} from '../util/web_worker_transfer';\nimport EvaluationParameters from '../style/evaluation_parameters';\nimport SourceFeatureState from '../source/source_state';\nimport {polygonIntersectsBox} from '../util/intersection_tests';\nimport {PossiblyEvaluated} from '../style/properties';\n\nimport type StyleLayer from '../style/style_layer';\nimport type {FeatureFilter} from '../style-spec/feature_filter';\nimport type Transform from '../geo/transform';\nimport type {FilterSpecification, PromoteIdSpecification} from '../style-spec/types';\n\nimport {FeatureIndexArray} from './array_types';\n\ntype QueryParameters = {\n scale: number,\n pixelPosMatrix: Float32Array,\n transform: Transform,\n tileSize: number,\n queryGeometry: Array,\n cameraQueryGeometry: Array,\n queryPadding: number,\n params: {\n filter: FilterSpecification,\n layers: Array,\n availableImages: Array\n }\n}\n\nclass FeatureIndex {\n tileID: OverscaledTileID;\n x: number;\n y: number;\n z: number;\n grid: Grid;\n grid3D: Grid;\n featureIndexArray: FeatureIndexArray;\n promoteId: ?PromoteIdSpecification;\n\n rawTileData: ArrayBuffer;\n bucketLayerIDs: Array>;\n\n vtLayers: {[_: string]: VectorTileLayer};\n sourceLayerCoder: DictionaryCoder;\n\n constructor(tileID: OverscaledTileID, promoteId?: ?PromoteIdSpecification) {\n this.tileID = tileID;\n this.x = tileID.canonical.x;\n this.y = tileID.canonical.y;\n this.z = tileID.canonical.z;\n this.grid = new Grid(EXTENT, 16, 0);\n this.grid3D = new Grid(EXTENT, 16, 0);\n this.featureIndexArray = new FeatureIndexArray();\n this.promoteId = promoteId;\n }\n\n insert(feature: VectorTileFeature, geometry: Array>, featureIndex: number, sourceLayerIndex: number, bucketIndex: number, is3D?: boolean) {\n const key = this.featureIndexArray.length;\n this.featureIndexArray.emplaceBack(featureIndex, sourceLayerIndex, bucketIndex);\n\n const grid = is3D ? this.grid3D : this.grid;\n\n for (let r = 0; r < geometry.length; r++) {\n const ring = geometry[r];\n\n const bbox = [Infinity, Infinity, -Infinity, -Infinity];\n for (let i = 0; i < ring.length; i++) {\n const p = ring[i];\n bbox[0] = Math.min(bbox[0], p.x);\n bbox[1] = Math.min(bbox[1], p.y);\n bbox[2] = Math.max(bbox[2], p.x);\n bbox[3] = Math.max(bbox[3], p.y);\n }\n\n if (bbox[0] < EXTENT &&\n bbox[1] < EXTENT &&\n bbox[2] >= 0 &&\n bbox[3] >= 0) {\n grid.insert(key, bbox[0], bbox[1], bbox[2], bbox[3]);\n }\n }\n }\n\n loadVTLayers(): {[_: string]: VectorTileLayer} {\n if (!this.vtLayers) {\n this.vtLayers = new vt.VectorTile(new Protobuf(this.rawTileData)).layers;\n this.sourceLayerCoder = new DictionaryCoder(this.vtLayers ? Object.keys(this.vtLayers).sort() : ['_geojsonTileLayer']);\n }\n return this.vtLayers;\n }\n\n // Finds non-symbol features in this tile at a particular position.\n query(args: QueryParameters, styleLayers: {[_: string]: StyleLayer}, serializedLayers: {[_: string]: Object}, sourceFeatureState: SourceFeatureState): {[_: string]: Array<{ featureIndex: number, feature: GeoJSONFeature }>} {\n this.loadVTLayers();\n\n const params = args.params || {},\n pixelsToTileUnits = EXTENT / args.tileSize / args.scale,\n filter = featureFilter(params.filter);\n\n const queryGeometry = args.queryGeometry;\n const queryPadding = args.queryPadding * pixelsToTileUnits;\n\n const bounds = getBounds(queryGeometry);\n const matching = this.grid.query(bounds.minX - queryPadding, bounds.minY - queryPadding, bounds.maxX + queryPadding, bounds.maxY + queryPadding);\n\n const cameraBounds = getBounds(args.cameraQueryGeometry);\n const matching3D = this.grid3D.query(\n cameraBounds.minX - queryPadding, cameraBounds.minY - queryPadding, cameraBounds.maxX + queryPadding, cameraBounds.maxY + queryPadding,\n (bx1, by1, bx2, by2) => {\n return polygonIntersectsBox(args.cameraQueryGeometry, bx1 - queryPadding, by1 - queryPadding, bx2 + queryPadding, by2 + queryPadding);\n });\n\n for (const key of matching3D) {\n matching.push(key);\n }\n\n matching.sort(topDownFeatureComparator);\n\n const result = {};\n let previousIndex;\n for (let k = 0; k < matching.length; k++) {\n const index = matching[k];\n\n // don't check the same feature more than once\n if (index === previousIndex) continue;\n previousIndex = index;\n\n const match = this.featureIndexArray.get(index);\n let featureGeometry = null;\n this.loadMatchingFeature(\n result,\n match.bucketIndex,\n match.sourceLayerIndex,\n match.featureIndex,\n filter,\n params.layers,\n params.availableImages,\n styleLayers,\n serializedLayers,\n sourceFeatureState,\n (feature: VectorTileFeature, styleLayer: StyleLayer, featureState: Object) => {\n if (!featureGeometry) {\n featureGeometry = loadGeometry(feature);\n }\n\n return styleLayer.queryIntersectsFeature(queryGeometry, feature, featureState, featureGeometry, this.z, args.transform, pixelsToTileUnits, args.pixelPosMatrix);\n }\n );\n }\n\n return result;\n }\n\n loadMatchingFeature(\n result: {[_: string]: Array<{ featureIndex: number, feature: GeoJSONFeature }>},\n bucketIndex: number,\n sourceLayerIndex: number,\n featureIndex: number,\n filter: FeatureFilter,\n filterLayerIDs: Array,\n availableImages: Array,\n styleLayers: {[_: string]: StyleLayer},\n serializedLayers: {[_: string]: Object},\n sourceFeatureState?: SourceFeatureState,\n intersectionTest?: (feature: VectorTileFeature, styleLayer: StyleLayer, featureState: Object, id: string | number | void) => boolean | number) {\n\n const layerIDs = this.bucketLayerIDs[bucketIndex];\n if (filterLayerIDs && !arraysIntersect(filterLayerIDs, layerIDs))\n return;\n\n const sourceLayerName = this.sourceLayerCoder.decode(sourceLayerIndex);\n const sourceLayer = this.vtLayers[sourceLayerName];\n const feature = sourceLayer.feature(featureIndex);\n\n if (filter.needGeometry) {\n const evaluationFeature = toEvaluationFeature(feature, true);\n if (!filter.filter(new EvaluationParameters(this.tileID.overscaledZ), evaluationFeature, this.tileID.canonical)) {\n return;\n }\n } else if (!filter.filter(new EvaluationParameters(this.tileID.overscaledZ), feature)) {\n return;\n }\n\n const id = this.getId(feature, sourceLayerName);\n\n for (let l = 0; l < layerIDs.length; l++) {\n const layerID = layerIDs[l];\n\n if (filterLayerIDs && filterLayerIDs.indexOf(layerID) < 0) {\n continue;\n }\n\n const styleLayer = styleLayers[layerID];\n\n if (!styleLayer) continue;\n\n let featureState = {};\n if (id !== undefined && sourceFeatureState) {\n // `feature-state` expression evaluation requires feature state to be available\n featureState = sourceFeatureState.getState(styleLayer.sourceLayer || '_geojsonTileLayer', id);\n }\n\n const serializedLayer = extend({}, serializedLayers[layerID]);\n\n serializedLayer.paint = evaluateProperties(serializedLayer.paint, styleLayer.paint, feature, featureState, availableImages);\n serializedLayer.layout = evaluateProperties(serializedLayer.layout, styleLayer.layout, feature, featureState, availableImages);\n\n const intersectionZ = !intersectionTest || intersectionTest(feature, styleLayer, featureState);\n if (!intersectionZ) {\n // Only applied for non-symbol features\n continue;\n }\n\n const geojsonFeature = new GeoJSONFeature(feature, this.z, this.x, this.y, id);\n (geojsonFeature: any).layer = serializedLayer;\n let layerResult = result[layerID];\n if (layerResult === undefined) {\n layerResult = result[layerID] = [];\n }\n layerResult.push({featureIndex, feature: geojsonFeature, intersectionZ});\n }\n }\n\n // Given a set of symbol indexes that have already been looked up,\n // return a matching set of GeoJSONFeatures\n lookupSymbolFeatures(symbolFeatureIndexes: Array,\n serializedLayers: {[string]: StyleLayer},\n bucketIndex: number,\n sourceLayerIndex: number,\n filterSpec: FilterSpecification,\n filterLayerIDs: Array,\n availableImages: Array,\n styleLayers: {[_: string]: StyleLayer}) {\n const result = {};\n this.loadVTLayers();\n\n const filter = featureFilter(filterSpec);\n\n for (const symbolFeatureIndex of symbolFeatureIndexes) {\n this.loadMatchingFeature(\n result,\n bucketIndex,\n sourceLayerIndex,\n symbolFeatureIndex,\n filter,\n filterLayerIDs,\n availableImages,\n styleLayers,\n serializedLayers\n );\n\n }\n return result;\n }\n\n hasLayer(id: string) {\n for (const layerIDs of this.bucketLayerIDs) {\n for (const layerID of layerIDs) {\n if (id === layerID) return true;\n }\n }\n\n return false;\n }\n\n getId(feature: VectorTileFeature, sourceLayerId: string): string | number | void {\n let id = feature.id;\n if (this.promoteId) {\n const propName = typeof this.promoteId === 'string' ? this.promoteId : this.promoteId[sourceLayerId];\n id = feature.properties[propName];\n if (typeof id === 'boolean') id = Number(id);\n }\n return id;\n }\n}\n\nregister(\n 'FeatureIndex',\n FeatureIndex,\n {omit: ['rawTileData', 'sourceLayerCoder']}\n);\n\nexport default FeatureIndex;\n\nfunction evaluateProperties(serializedProperties, styleLayerProperties, feature, featureState, availableImages) {\n return mapObject(serializedProperties, (property, key) => {\n const prop = styleLayerProperties instanceof PossiblyEvaluated ? styleLayerProperties.get(key) : null;\n return prop && prop.evaluate ? prop.evaluate(feature, featureState, availableImages) : prop;\n });\n}\n\nfunction getBounds(geometry: Array) {\n let minX = Infinity;\n let minY = Infinity;\n let maxX = -Infinity;\n let maxY = -Infinity;\n for (const p of geometry) {\n minX = Math.min(minX, p.x);\n minY = Math.min(minY, p.y);\n maxX = Math.max(maxX, p.x);\n maxY = Math.max(maxY, p.y);\n }\n return {minX, minY, maxX, maxY};\n}\n\nfunction topDownFeatureComparator(a, b) {\n return b - a;\n}\n", "// @flow\n\nimport {uniqueId, parseCacheControl} from '../util/util';\nimport {deserialize as deserializeBucket} from '../data/bucket';\nimport FeatureIndex from '../data/feature_index';\nimport GeoJSONFeature from '../util/vectortile_to_geojson';\nimport featureFilter from '../style-spec/feature_filter';\nimport SymbolBucket from '../data/bucket/symbol_bucket';\nimport {CollisionBoxArray} from '../data/array_types';\nimport Texture from '../render/texture';\nimport browser from '../util/browser';\nimport toEvaluationFeature from '../data/evaluation_feature';\nimport EvaluationParameters from '../style/evaluation_parameters';\nimport SourceFeatureState from '../source/source_state';\nimport {lazyLoadRTLTextPlugin} from './rtl_text_plugin';\n\nconst CLOCK_SKEW_RETRY_TIMEOUT = 30000;\n\nimport type {Bucket} from '../data/bucket';\nimport type StyleLayer from '../style/style_layer';\nimport type {WorkerTileResult} from './worker_source';\nimport type Actor from '../util/actor';\nimport type DEMData from '../data/dem_data';\nimport type {AlphaImage} from '../util/image';\nimport type ImageAtlas from '../render/image_atlas';\nimport type ImageManager from '../render/image_manager';\nimport type Context from '../gl/context';\nimport type {OverscaledTileID} from './tile_id';\nimport type Framebuffer from '../gl/framebuffer';\nimport type Transform from '../geo/transform';\nimport type {LayerFeatureStates} from './source_state';\nimport type {Cancelable} from '../types/cancelable';\nimport type {FilterSpecification} from '../style-spec/types';\n\nexport type TileState =\n | 'loading' // Tile data is in the process of loading.\n | 'loaded' // Tile data has been loaded. Tile can be rendered.\n | 'reloading' // Tile data has been loaded and is being updated. Tile can be rendered.\n | 'unloaded' // Tile data has been deleted.\n | 'errored' // Tile data was not loaded because of an error.\n | 'expired'; /* Tile data was previously loaded, but has expired per its\n * HTTP headers and is in the process of refreshing. */\n\n/**\n * A tile object is the combination of a Coordinate, which defines\n * its place, as well as a unique ID and data tracking for its content\n *\n * @private\n */\nclass Tile {\n tileID: OverscaledTileID;\n uid: number;\n uses: number;\n tileSize: number;\n buckets: {[_: string]: Bucket};\n latestFeatureIndex: ?FeatureIndex;\n latestRawTileData: ?ArrayBuffer;\n imageAtlas: ?ImageAtlas;\n imageAtlasTexture: Texture;\n glyphAtlasImage: ?AlphaImage;\n glyphAtlasTexture: Texture;\n expirationTime: any;\n expiredRequestCount: number;\n state: TileState;\n timeAdded: any;\n fadeEndTime: any;\n collisionBoxArray: ?CollisionBoxArray;\n redoWhenDone: boolean;\n showCollisionBoxes: boolean;\n placementSource: any;\n actor: ?Actor;\n vtLayers: {[_: string]: VectorTileLayer};\n\n neighboringTiles: ?Object;\n dem: ?DEMData;\n aborted: ?boolean;\n needsHillshadePrepare: ?boolean;\n request: ?Cancelable;\n texture: any;\n fbo: ?Framebuffer;\n demTexture: ?Texture;\n refreshedUponExpiration: boolean;\n reloadCallback: any;\n resourceTiming: ?Array;\n queryPadding: number;\n\n symbolFadeHoldUntil: ?number;\n hasSymbolBuckets: boolean;\n hasRTLText: boolean;\n dependencies: Object;\n\n /**\n * @param {OverscaledTileID} tileID\n * @param size\n * @private\n */\n constructor(tileID: OverscaledTileID, size: number) {\n this.tileID = tileID;\n this.uid = uniqueId();\n this.uses = 0;\n this.tileSize = size;\n this.buckets = {};\n this.expirationTime = null;\n this.queryPadding = 0;\n this.hasSymbolBuckets = false;\n this.hasRTLText = false;\n this.dependencies = {};\n\n // Counts the number of times a response was already expired when\n // received. We're using this to add a delay when making a new request\n // so we don't have to keep retrying immediately in case of a server\n // serving expired tiles.\n this.expiredRequestCount = 0;\n\n this.state = 'loading';\n }\n\n registerFadeDuration(duration: number) {\n const fadeEndTime = duration + this.timeAdded;\n if (fadeEndTime < browser.now()) return;\n if (this.fadeEndTime && fadeEndTime < this.fadeEndTime) return;\n\n this.fadeEndTime = fadeEndTime;\n }\n\n wasRequested() {\n return this.state === 'errored' || this.state === 'loaded' || this.state === 'reloading';\n }\n\n /**\n * Given a data object with a 'buffers' property, load it into\n * this tile's elementGroups and buffers properties and set loaded\n * to true. If the data is null, like in the case of an empty\n * GeoJSON tile, no-op but still set loaded to true.\n * @param {Object} data\n * @param painter\n * @returns {undefined}\n * @private\n */\n loadVectorData(data: WorkerTileResult, painter: any, justReloaded: ?boolean) {\n if (this.hasData()) {\n this.unloadVectorData();\n }\n\n this.state = 'loaded';\n\n // empty GeoJSON tile\n if (!data) {\n this.collisionBoxArray = new CollisionBoxArray();\n return;\n }\n\n if (data.featureIndex) {\n this.latestFeatureIndex = data.featureIndex;\n if (data.rawTileData) {\n // Only vector tiles have rawTileData, and they won't update it for\n // 'reloadTile'\n this.latestRawTileData = data.rawTileData;\n this.latestFeatureIndex.rawTileData = data.rawTileData;\n } else if (this.latestRawTileData) {\n // If rawTileData hasn't updated, hold onto a pointer to the last\n // one we received\n this.latestFeatureIndex.rawTileData = this.latestRawTileData;\n }\n }\n this.collisionBoxArray = data.collisionBoxArray;\n this.buckets = deserializeBucket(data.buckets, painter.style);\n\n this.hasSymbolBuckets = false;\n for (const id in this.buckets) {\n const bucket = this.buckets[id];\n if (bucket instanceof SymbolBucket) {\n this.hasSymbolBuckets = true;\n if (justReloaded) {\n bucket.justReloaded = true;\n } else {\n break;\n }\n }\n }\n\n this.hasRTLText = false;\n if (this.hasSymbolBuckets) {\n for (const id in this.buckets) {\n const bucket = this.buckets[id];\n if (bucket instanceof SymbolBucket) {\n if (bucket.hasRTLText) {\n this.hasRTLText = true;\n lazyLoadRTLTextPlugin();\n break;\n }\n }\n }\n }\n\n this.queryPadding = 0;\n for (const id in this.buckets) {\n const bucket = this.buckets[id];\n this.queryPadding = Math.max(this.queryPadding, painter.style.getLayer(id).queryRadius(bucket));\n }\n\n if (data.imageAtlas) {\n this.imageAtlas = data.imageAtlas;\n }\n if (data.glyphAtlasImage) {\n this.glyphAtlasImage = data.glyphAtlasImage;\n }\n }\n\n /**\n * Release any data or WebGL resources referenced by this tile.\n * @returns {undefined}\n * @private\n */\n unloadVectorData() {\n for (const id in this.buckets) {\n this.buckets[id].destroy();\n }\n this.buckets = {};\n\n if (this.imageAtlasTexture) {\n this.imageAtlasTexture.destroy();\n }\n\n if (this.imageAtlas) {\n this.imageAtlas = null;\n }\n\n if (this.glyphAtlasTexture) {\n this.glyphAtlasTexture.destroy();\n }\n\n this.latestFeatureIndex = null;\n this.state = 'unloaded';\n }\n\n getBucket(layer: StyleLayer) {\n return this.buckets[layer.id];\n }\n\n upload(context: Context) {\n for (const id in this.buckets) {\n const bucket = this.buckets[id];\n if (bucket.uploadPending()) {\n bucket.upload(context);\n }\n }\n\n const gl = context.gl;\n if (this.imageAtlas && !this.imageAtlas.uploaded) {\n this.imageAtlasTexture = new Texture(context, this.imageAtlas.image, gl.RGBA);\n this.imageAtlas.uploaded = true;\n }\n\n if (this.glyphAtlasImage) {\n this.glyphAtlasTexture = new Texture(context, this.glyphAtlasImage, gl.ALPHA);\n this.glyphAtlasImage = null;\n }\n }\n\n prepare(imageManager: ImageManager) {\n if (this.imageAtlas) {\n this.imageAtlas.patchUpdatedImages(imageManager, this.imageAtlasTexture);\n }\n }\n\n // Queries non-symbol features rendered for this tile.\n // Symbol features are queried globally\n queryRenderedFeatures(layers: {[_: string]: StyleLayer},\n serializedLayers: {[string]: Object},\n sourceFeatureState: SourceFeatureState,\n queryGeometry: Array,\n cameraQueryGeometry: Array,\n scale: number,\n params: { filter: FilterSpecification, layers: Array, availableImages: Array },\n transform: Transform,\n maxPitchScaleFactor: number,\n pixelPosMatrix: Float32Array): {[_: string]: Array<{ featureIndex: number, feature: GeoJSONFeature }>} {\n if (!this.latestFeatureIndex || !this.latestFeatureIndex.rawTileData)\n return {};\n\n return this.latestFeatureIndex.query({\n queryGeometry,\n cameraQueryGeometry,\n scale,\n tileSize: this.tileSize,\n pixelPosMatrix,\n transform,\n params,\n queryPadding: this.queryPadding * maxPitchScaleFactor\n }, layers, serializedLayers, sourceFeatureState);\n }\n\n querySourceFeatures(result: Array, params: any) {\n const featureIndex = this.latestFeatureIndex;\n if (!featureIndex || !featureIndex.rawTileData) return;\n\n const vtLayers = featureIndex.loadVTLayers();\n\n const sourceLayer = params ? params.sourceLayer : '';\n const layer = vtLayers._geojsonTileLayer || vtLayers[sourceLayer];\n\n if (!layer) return;\n\n const filter = featureFilter(params && params.filter);\n const {z, x, y} = this.tileID.canonical;\n const coord = {z, x, y};\n\n for (let i = 0; i < layer.length; i++) {\n const feature = layer.feature(i);\n if (filter.needGeometry) {\n const evaluationFeature = toEvaluationFeature(feature, true);\n if (!filter.filter(new EvaluationParameters(this.tileID.overscaledZ), evaluationFeature, this.tileID.canonical)) continue;\n } else if (!filter.filter(new EvaluationParameters(this.tileID.overscaledZ), feature)) {\n continue;\n }\n const id = featureIndex.getId(feature, sourceLayer);\n const geojsonFeature = new GeoJSONFeature(feature, z, x, y, id);\n (geojsonFeature: any).tile = coord;\n result.push(geojsonFeature);\n }\n }\n\n hasData() {\n return this.state === 'loaded' || this.state === 'reloading' || this.state === 'expired';\n }\n\n patternsLoaded() {\n return this.imageAtlas && !!Object.keys(this.imageAtlas.patternPositions).length;\n }\n\n setExpiryData(data: any) {\n const prior = this.expirationTime;\n\n if (data.cacheControl) {\n const parsedCC = parseCacheControl(data.cacheControl);\n if (parsedCC['max-age']) this.expirationTime = Date.now() + parsedCC['max-age'] * 1000;\n } else if (data.expires) {\n this.expirationTime = new Date(data.expires).getTime();\n }\n\n if (this.expirationTime) {\n const now = Date.now();\n let isExpired = false;\n\n if (this.expirationTime > now) {\n isExpired = false;\n } else if (!prior) {\n isExpired = true;\n } else if (this.expirationTime < prior) {\n // Expiring date is going backwards:\n // fall back to exponential backoff\n isExpired = true;\n\n } else {\n const delta = this.expirationTime - prior;\n\n if (!delta) {\n // Server is serving the same expired resource over and over: fall\n // back to exponential backoff.\n isExpired = true;\n\n } else {\n // Assume that either the client or the server clock is wrong and\n // try to interpolate a valid expiration date (from the client POV)\n // observing a minimum timeout.\n this.expirationTime = now + Math.max(delta, CLOCK_SKEW_RETRY_TIMEOUT);\n\n }\n }\n\n if (isExpired) {\n this.expiredRequestCount++;\n this.state = 'expired';\n } else {\n this.expiredRequestCount = 0;\n }\n }\n }\n\n getExpiryTimeout() {\n if (this.expirationTime) {\n if (this.expiredRequestCount) {\n return 1000 * (1 << Math.min(this.expiredRequestCount - 1, 31));\n } else {\n // Max value for `setTimeout` implementations is a 32 bit integer; cap this accordingly\n return Math.min(this.expirationTime - new Date().getTime(), Math.pow(2, 31) - 1);\n }\n }\n }\n\n setFeatureState(states: LayerFeatureStates, painter: any) {\n if (!this.latestFeatureIndex ||\n !this.latestFeatureIndex.rawTileData ||\n Object.keys(states).length === 0) {\n return;\n }\n\n const vtLayers = this.latestFeatureIndex.loadVTLayers();\n\n for (const id in this.buckets) {\n if (!painter.style.hasLayer(id)) continue;\n\n const bucket = this.buckets[id];\n // Buckets are grouped by common source-layer\n const sourceLayerId = bucket.layers[0]['sourceLayer'] || '_geojsonTileLayer';\n const sourceLayer = vtLayers[sourceLayerId];\n const sourceLayerStates = states[sourceLayerId];\n if (!sourceLayer || !sourceLayerStates || Object.keys(sourceLayerStates).length === 0) continue;\n\n bucket.update(sourceLayerStates, sourceLayer, this.imageAtlas && this.imageAtlas.patternPositions || {});\n const layer = painter && painter.style && painter.style.getLayer(id);\n if (layer) {\n this.queryPadding = Math.max(this.queryPadding, layer.queryRadius(bucket));\n }\n }\n }\n\n holdingForFade(): boolean {\n return this.symbolFadeHoldUntil !== undefined;\n }\n\n symbolFadeFinished(): boolean {\n return !this.symbolFadeHoldUntil || this.symbolFadeHoldUntil < browser.now();\n }\n\n clearFadeHold() {\n this.symbolFadeHoldUntil = undefined;\n }\n\n setHoldDuration(duration: number) {\n this.symbolFadeHoldUntil = browser.now() + duration;\n }\n\n setDependencies(namespace: string, dependencies: Array) {\n const index = {};\n for (const dep of dependencies) {\n index[dep] = true;\n }\n this.dependencies[namespace] = index;\n }\n\n hasDependency(namespaces: Array, keys: Array) {\n for (const namespace of namespaces) {\n const dependencies = this.dependencies[namespace];\n if (dependencies) {\n for (const key of keys) {\n if (dependencies[key]) {\n return true;\n }\n }\n }\n }\n return false;\n }\n}\n\nexport default Tile;\n", "// @flow\n\nimport type {CollisionBoxArray} from './array_types';\nimport type Style from '../style/style';\nimport type {TypedStyleLayer} from '../style/style_layer/typed_style_layer';\nimport type FeatureIndex from './feature_index';\nimport type Context from '../gl/context';\nimport type {FeatureStates} from '../source/source_state';\nimport type {ImagePosition} from '../render/image_atlas';\nimport type {CanonicalTileID} from '../source/tile_id';\n\nexport type BucketParameters = {\n index: number,\n layers: Array,\n zoom: number,\n pixelRatio: number,\n overscaling: number,\n collisionBoxArray: CollisionBoxArray,\n sourceLayerIndex: number,\n sourceID: string\n}\n\nexport type PopulateParameters = {\n featureIndex: FeatureIndex,\n iconDependencies: {},\n patternDependencies: {},\n glyphDependencies: {},\n availableImages: Array\n}\n\nexport type IndexedFeature = {\n feature: VectorTileFeature,\n id: number | string,\n index: number,\n sourceLayerIndex: number,\n}\n\nexport type BucketFeature = {|\n index: number,\n sourceLayerIndex: number,\n geometry: Array>,\n properties: Object,\n type: 1 | 2 | 3,\n id?: any,\n +patterns: {[_: string]: {\"min\": string, \"mid\": string, \"max\": string}},\n sortKey?: number\n|};\n\n/**\n * The `Bucket` interface is the single point of knowledge about turning vector\n * tiles into WebGL buffers.\n *\n * `Bucket` is an abstract interface. An implementation exists for each style layer type.\n * Create a bucket via the `StyleLayer#createBucket` method.\n *\n * The concrete bucket types, using layout options from the style layer,\n * transform feature geometries into vertex and index data for use by the\n * vertex shader. They also (via `ProgramConfiguration`) use feature\n * properties and the zoom level to populate the attributes needed for\n * data-driven styling.\n *\n * Buckets are designed to be built on a worker thread and then serialized and\n * transferred back to the main thread for rendering. On the worker side, a\n * bucket's vertex, index, and attribute data is stored in `bucket.arrays:\n * ArrayGroup`. When a bucket's data is serialized and sent back to the main\n * thread, is gets deserialized (using `new Bucket(serializedBucketData)`, with\n * the array data now stored in `bucket.buffers: BufferGroup`. BufferGroups\n * hold the same data as ArrayGroups, but are tuned for consumption by WebGL.\n *\n * @private\n */\nexport interface Bucket {\n layerIds: Array;\n hasPattern: boolean;\n +layers: Array;\n +stateDependentLayers: Array;\n +stateDependentLayerIds: Array;\n populate(features: Array, options: PopulateParameters, canonical: CanonicalTileID): void;\n update(states: FeatureStates, vtLayer: VectorTileLayer, imagePositions: {[_: string]: ImagePosition}): void;\n isEmpty(): boolean;\n\n upload(context: Context): void;\n uploadPending(): boolean;\n\n /**\n * Release the WebGL resources associated with the buffers. Note that because\n * buckets are shared between layers having the same layout properties, they\n * must be destroyed in groups (all buckets for a tile, or all symbol buckets).\n *\n * @private\n */\n destroy(): void;\n}\n\nexport function deserialize(input: Array, style: Style): {[_: string]: Bucket} {\n const output = {};\n\n // Guard against the case where the map's style has been set to null while\n // this bucket has been parsing.\n if (!style) return output;\n\n for (const bucket of input) {\n const layers = bucket.layerIds\n .map((id) => style.getLayer(id))\n .filter(Boolean);\n\n if (layers.length === 0) {\n continue;\n }\n\n // look up StyleLayer objects from layer ids (since we don't\n // want to waste time serializing/copying them from the worker)\n (bucket: any).layers = layers;\n if ((bucket: any).stateDependentLayerIds) {\n (bucket: any).stateDependentLayers = (bucket: any).stateDependentLayerIds.map((lId) => layers.filter((l) => l.id === lId)[0]);\n }\n for (const layer of layers) {\n output[layer.id] = bucket;\n }\n }\n\n return output;\n}\n", "\nexport default ['type', 'source', 'source-layer', 'minzoom', 'maxzoom', 'filter', 'layout'];\n", "// @flow\n\nimport window from '../util/window';\nimport type {RequestParameters} from '../util/ajax';\n\nconst performance = window.performance;\n\nexport type PerformanceMetrics = {\n loadTime: number,\n fullLoadTime: number,\n fps: number,\n percentDroppedFrames: number\n}\n\nexport const PerformanceMarkers = {\n create: 'create',\n load: 'load',\n fullLoad: 'fullLoad'\n};\n\nlet lastFrameTime = null;\nlet frameTimes = [];\n\nconst minFramerateTarget = 30;\nconst frameTimeTarget = 1000 / minFramerateTarget;\n\nexport const PerformanceUtils = {\n mark(marker: $Keys) {\n performance.mark(marker);\n },\n frame(timestamp: number) {\n const currTimestamp = timestamp;\n if (lastFrameTime != null) {\n const frameTime = currTimestamp - lastFrameTime;\n frameTimes.push(frameTime);\n }\n lastFrameTime = currTimestamp;\n },\n clearMetrics() {\n lastFrameTime = null;\n frameTimes = [];\n performance.clearMeasures('loadTime');\n performance.clearMeasures('fullLoadTime');\n\n for (const marker in PerformanceMarkers) {\n performance.clearMarks(PerformanceMarkers[marker]);\n }\n },\n getPerformanceMetrics(): PerformanceMetrics {\n const loadTime = performance.measure('loadTime', PerformanceMarkers.create, PerformanceMarkers.load).duration;\n const fullLoadTime = performance.measure('fullLoadTime', PerformanceMarkers.create, PerformanceMarkers.fullLoad).duration;\n const totalFrames = frameTimes.length;\n\n const avgFrameTime = frameTimes.reduce((prev, curr) => prev + curr, 0) / totalFrames / 1000;\n const fps = 1 / avgFrameTime;\n\n // count frames that missed our framerate target\n const droppedFrames = frameTimes\n .filter((frameTime) => frameTime > frameTimeTarget)\n .reduce((acc, curr) => {\n return acc + (curr - frameTimeTarget) / frameTimeTarget;\n }, 0);\n const percentDroppedFrames = (droppedFrames / (totalFrames + droppedFrames)) * 100;\n\n return {\n loadTime,\n fullLoadTime,\n fps,\n percentDroppedFrames\n };\n }\n};\n\n/**\n * Safe wrapper for the performance resource timing API in web workers with graceful degradation\n *\n * @param {RequestParameters} request\n * @private\n */\nexport class RequestPerformance {\n _marks: {start: string, end: string, measure: string};\n\n constructor (request: RequestParameters) {\n this._marks = {\n start: [request.url, 'start'].join('#'),\n end: [request.url, 'end'].join('#'),\n measure: request.url.toString()\n };\n\n performance.mark(this._marks.start);\n }\n\n finish() {\n performance.mark(this._marks.end);\n let resourceTimingData = performance.getEntriesByName(this._marks.measure);\n\n // fallback if web worker implementation of perf.getEntriesByName returns empty\n if (resourceTimingData.length === 0) {\n performance.measure(this._marks.measure, this._marks.start, this._marks.end);\n resourceTimingData = performance.getEntriesByName(this._marks.measure);\n\n // cleanup\n performance.clearMarks(this._marks.start);\n performance.clearMarks(this._marks.end);\n performance.clearMeasures(this._marks.measure);\n }\n\n return resourceTimingData;\n }\n}\n\nexport default performance;\n", "import * as glMatrix from \"./common.js\";\n/**\r\n * 3x3 Matrix\r\n * @module mat3\r\n */\n\n/**\r\n * Creates a new identity mat3\r\n *\r\n * @returns {mat3} a new 3x3 matrix\r\n */\n\nexport function create() {\n var out = new glMatrix.ARRAY_TYPE(9);\n\n if (glMatrix.ARRAY_TYPE != Float32Array) {\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[5] = 0;\n out[6] = 0;\n out[7] = 0;\n }\n\n out[0] = 1;\n out[4] = 1;\n out[8] = 1;\n return out;\n}\n/**\r\n * Copies the upper-left 3x3 values into the given mat3.\r\n *\r\n * @param {mat3} out the receiving 3x3 matrix\r\n * @param {mat4} a the source 4x4 matrix\r\n * @returns {mat3} out\r\n */\n\nexport function fromMat4(out, a) {\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n out[3] = a[4];\n out[4] = a[5];\n out[5] = a[6];\n out[6] = a[8];\n out[7] = a[9];\n out[8] = a[10];\n return out;\n}\n/**\r\n * Creates a new mat3 initialized with values from an existing matrix\r\n *\r\n * @param {mat3} a matrix to clone\r\n * @returns {mat3} a new 3x3 matrix\r\n */\n\nexport function clone(a) {\n var out = new glMatrix.ARRAY_TYPE(9);\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n out[3] = a[3];\n out[4] = a[4];\n out[5] = a[5];\n out[6] = a[6];\n out[7] = a[7];\n out[8] = a[8];\n return out;\n}\n/**\r\n * Copy the values from one mat3 to another\r\n *\r\n * @param {mat3} out the receiving matrix\r\n * @param {mat3} a the source matrix\r\n * @returns {mat3} out\r\n */\n\nexport function copy(out, a) {\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n out[3] = a[3];\n out[4] = a[4];\n out[5] = a[5];\n out[6] = a[6];\n out[7] = a[7];\n out[8] = a[8];\n return out;\n}\n/**\r\n * Create a new mat3 with the given values\r\n *\r\n * @param {Number} m00 Component in column 0, row 0 position (index 0)\r\n * @param {Number} m01 Component in column 0, row 1 position (index 1)\r\n * @param {Number} m02 Component in column 0, row 2 position (index 2)\r\n * @param {Number} m10 Component in column 1, row 0 position (index 3)\r\n * @param {Number} m11 Component in column 1, row 1 position (index 4)\r\n * @param {Number} m12 Component in column 1, row 2 position (index 5)\r\n * @param {Number} m20 Component in column 2, row 0 position (index 6)\r\n * @param {Number} m21 Component in column 2, row 1 position (index 7)\r\n * @param {Number} m22 Component in column 2, row 2 position (index 8)\r\n * @returns {mat3} A new mat3\r\n */\n\nexport function fromValues(m00, m01, m02, m10, m11, m12, m20, m21, m22) {\n var out = new glMatrix.ARRAY_TYPE(9);\n out[0] = m00;\n out[1] = m01;\n out[2] = m02;\n out[3] = m10;\n out[4] = m11;\n out[5] = m12;\n out[6] = m20;\n out[7] = m21;\n out[8] = m22;\n return out;\n}\n/**\r\n * Set the components of a mat3 to the given values\r\n *\r\n * @param {mat3} out the receiving matrix\r\n * @param {Number} m00 Component in column 0, row 0 position (index 0)\r\n * @param {Number} m01 Component in column 0, row 1 position (index 1)\r\n * @param {Number} m02 Component in column 0, row 2 position (index 2)\r\n * @param {Number} m10 Component in column 1, row 0 position (index 3)\r\n * @param {Number} m11 Component in column 1, row 1 position (index 4)\r\n * @param {Number} m12 Component in column 1, row 2 position (index 5)\r\n * @param {Number} m20 Component in column 2, row 0 position (index 6)\r\n * @param {Number} m21 Component in column 2, row 1 position (index 7)\r\n * @param {Number} m22 Component in column 2, row 2 position (index 8)\r\n * @returns {mat3} out\r\n */\n\nexport function set(out, m00, m01, m02, m10, m11, m12, m20, m21, m22) {\n out[0] = m00;\n out[1] = m01;\n out[2] = m02;\n out[3] = m10;\n out[4] = m11;\n out[5] = m12;\n out[6] = m20;\n out[7] = m21;\n out[8] = m22;\n return out;\n}\n/**\r\n * Set a mat3 to the identity matrix\r\n *\r\n * @param {mat3} out the receiving matrix\r\n * @returns {mat3} out\r\n */\n\nexport function identity(out) {\n out[0] = 1;\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = 1;\n out[5] = 0;\n out[6] = 0;\n out[7] = 0;\n out[8] = 1;\n return out;\n}\n/**\r\n * Transpose the values of a mat3\r\n *\r\n * @param {mat3} out the receiving matrix\r\n * @param {mat3} a the source matrix\r\n * @returns {mat3} out\r\n */\n\nexport function transpose(out, a) {\n // If we are transposing ourselves we can skip a few steps but have to cache some values\n if (out === a) {\n var a01 = a[1],\n a02 = a[2],\n a12 = a[5];\n out[1] = a[3];\n out[2] = a[6];\n out[3] = a01;\n out[5] = a[7];\n out[6] = a02;\n out[7] = a12;\n } else {\n out[0] = a[0];\n out[1] = a[3];\n out[2] = a[6];\n out[3] = a[1];\n out[4] = a[4];\n out[5] = a[7];\n out[6] = a[2];\n out[7] = a[5];\n out[8] = a[8];\n }\n\n return out;\n}\n/**\r\n * Inverts a mat3\r\n *\r\n * @param {mat3} out the receiving matrix\r\n * @param {mat3} a the source matrix\r\n * @returns {mat3} out\r\n */\n\nexport function invert(out, a) {\n var a00 = a[0],\n a01 = a[1],\n a02 = a[2];\n var a10 = a[3],\n a11 = a[4],\n a12 = a[5];\n var a20 = a[6],\n a21 = a[7],\n a22 = a[8];\n var b01 = a22 * a11 - a12 * a21;\n var b11 = -a22 * a10 + a12 * a20;\n var b21 = a21 * a10 - a11 * a20; // Calculate the determinant\n\n var det = a00 * b01 + a01 * b11 + a02 * b21;\n\n if (!det) {\n return null;\n }\n\n det = 1.0 / det;\n out[0] = b01 * det;\n out[1] = (-a22 * a01 + a02 * a21) * det;\n out[2] = (a12 * a01 - a02 * a11) * det;\n out[3] = b11 * det;\n out[4] = (a22 * a00 - a02 * a20) * det;\n out[5] = (-a12 * a00 + a02 * a10) * det;\n out[6] = b21 * det;\n out[7] = (-a21 * a00 + a01 * a20) * det;\n out[8] = (a11 * a00 - a01 * a10) * det;\n return out;\n}\n/**\r\n * Calculates the adjugate of a mat3\r\n *\r\n * @param {mat3} out the receiving matrix\r\n * @param {mat3} a the source matrix\r\n * @returns {mat3} out\r\n */\n\nexport function adjoint(out, a) {\n var a00 = a[0],\n a01 = a[1],\n a02 = a[2];\n var a10 = a[3],\n a11 = a[4],\n a12 = a[5];\n var a20 = a[6],\n a21 = a[7],\n a22 = a[8];\n out[0] = a11 * a22 - a12 * a21;\n out[1] = a02 * a21 - a01 * a22;\n out[2] = a01 * a12 - a02 * a11;\n out[3] = a12 * a20 - a10 * a22;\n out[4] = a00 * a22 - a02 * a20;\n out[5] = a02 * a10 - a00 * a12;\n out[6] = a10 * a21 - a11 * a20;\n out[7] = a01 * a20 - a00 * a21;\n out[8] = a00 * a11 - a01 * a10;\n return out;\n}\n/**\r\n * Calculates the determinant of a mat3\r\n *\r\n * @param {mat3} a the source matrix\r\n * @returns {Number} determinant of a\r\n */\n\nexport function determinant(a) {\n var a00 = a[0],\n a01 = a[1],\n a02 = a[2];\n var a10 = a[3],\n a11 = a[4],\n a12 = a[5];\n var a20 = a[6],\n a21 = a[7],\n a22 = a[8];\n return a00 * (a22 * a11 - a12 * a21) + a01 * (-a22 * a10 + a12 * a20) + a02 * (a21 * a10 - a11 * a20);\n}\n/**\r\n * Multiplies two mat3's\r\n *\r\n * @param {mat3} out the receiving matrix\r\n * @param {mat3} a the first operand\r\n * @param {mat3} b the second operand\r\n * @returns {mat3} out\r\n */\n\nexport function multiply(out, a, b) {\n var a00 = a[0],\n a01 = a[1],\n a02 = a[2];\n var a10 = a[3],\n a11 = a[4],\n a12 = a[5];\n var a20 = a[6],\n a21 = a[7],\n a22 = a[8];\n var b00 = b[0],\n b01 = b[1],\n b02 = b[2];\n var b10 = b[3],\n b11 = b[4],\n b12 = b[5];\n var b20 = b[6],\n b21 = b[7],\n b22 = b[8];\n out[0] = b00 * a00 + b01 * a10 + b02 * a20;\n out[1] = b00 * a01 + b01 * a11 + b02 * a21;\n out[2] = b00 * a02 + b01 * a12 + b02 * a22;\n out[3] = b10 * a00 + b11 * a10 + b12 * a20;\n out[4] = b10 * a01 + b11 * a11 + b12 * a21;\n out[5] = b10 * a02 + b11 * a12 + b12 * a22;\n out[6] = b20 * a00 + b21 * a10 + b22 * a20;\n out[7] = b20 * a01 + b21 * a11 + b22 * a21;\n out[8] = b20 * a02 + b21 * a12 + b22 * a22;\n return out;\n}\n/**\r\n * Translate a mat3 by the given vector\r\n *\r\n * @param {mat3} out the receiving matrix\r\n * @param {mat3} a the matrix to translate\r\n * @param {vec2} v vector to translate by\r\n * @returns {mat3} out\r\n */\n\nexport function translate(out, a, v) {\n var a00 = a[0],\n a01 = a[1],\n a02 = a[2],\n a10 = a[3],\n a11 = a[4],\n a12 = a[5],\n a20 = a[6],\n a21 = a[7],\n a22 = a[8],\n x = v[0],\n y = v[1];\n out[0] = a00;\n out[1] = a01;\n out[2] = a02;\n out[3] = a10;\n out[4] = a11;\n out[5] = a12;\n out[6] = x * a00 + y * a10 + a20;\n out[7] = x * a01 + y * a11 + a21;\n out[8] = x * a02 + y * a12 + a22;\n return out;\n}\n/**\r\n * Rotates a mat3 by the given angle\r\n *\r\n * @param {mat3} out the receiving matrix\r\n * @param {mat3} a the matrix to rotate\r\n * @param {Number} rad the angle to rotate the matrix by\r\n * @returns {mat3} out\r\n */\n\nexport function rotate(out, a, rad) {\n var a00 = a[0],\n a01 = a[1],\n a02 = a[2],\n a10 = a[3],\n a11 = a[4],\n a12 = a[5],\n a20 = a[6],\n a21 = a[7],\n a22 = a[8],\n s = Math.sin(rad),\n c = Math.cos(rad);\n out[0] = c * a00 + s * a10;\n out[1] = c * a01 + s * a11;\n out[2] = c * a02 + s * a12;\n out[3] = c * a10 - s * a00;\n out[4] = c * a11 - s * a01;\n out[5] = c * a12 - s * a02;\n out[6] = a20;\n out[7] = a21;\n out[8] = a22;\n return out;\n}\n/**\r\n * Scales the mat3 by the dimensions in the given vec2\r\n *\r\n * @param {mat3} out the receiving matrix\r\n * @param {mat3} a the matrix to rotate\r\n * @param {vec2} v the vec2 to scale the matrix by\r\n * @returns {mat3} out\r\n **/\n\nexport function scale(out, a, v) {\n var x = v[0],\n y = v[1];\n out[0] = x * a[0];\n out[1] = x * a[1];\n out[2] = x * a[2];\n out[3] = y * a[3];\n out[4] = y * a[4];\n out[5] = y * a[5];\n out[6] = a[6];\n out[7] = a[7];\n out[8] = a[8];\n return out;\n}\n/**\r\n * Creates a matrix from a vector translation\r\n * This is equivalent to (but much faster than):\r\n *\r\n * mat3.identity(dest);\r\n * mat3.translate(dest, dest, vec);\r\n *\r\n * @param {mat3} out mat3 receiving operation result\r\n * @param {vec2} v Translation vector\r\n * @returns {mat3} out\r\n */\n\nexport function fromTranslation(out, v) {\n out[0] = 1;\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = 1;\n out[5] = 0;\n out[6] = v[0];\n out[7] = v[1];\n out[8] = 1;\n return out;\n}\n/**\r\n * Creates a matrix from a given angle\r\n * This is equivalent to (but much faster than):\r\n *\r\n * mat3.identity(dest);\r\n * mat3.rotate(dest, dest, rad);\r\n *\r\n * @param {mat3} out mat3 receiving operation result\r\n * @param {Number} rad the angle to rotate the matrix by\r\n * @returns {mat3} out\r\n */\n\nexport function fromRotation(out, rad) {\n var s = Math.sin(rad),\n c = Math.cos(rad);\n out[0] = c;\n out[1] = s;\n out[2] = 0;\n out[3] = -s;\n out[4] = c;\n out[5] = 0;\n out[6] = 0;\n out[7] = 0;\n out[8] = 1;\n return out;\n}\n/**\r\n * Creates a matrix from a vector scaling\r\n * This is equivalent to (but much faster than):\r\n *\r\n * mat3.identity(dest);\r\n * mat3.scale(dest, dest, vec);\r\n *\r\n * @param {mat3} out mat3 receiving operation result\r\n * @param {vec2} v Scaling vector\r\n * @returns {mat3} out\r\n */\n\nexport function fromScaling(out, v) {\n out[0] = v[0];\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = v[1];\n out[5] = 0;\n out[6] = 0;\n out[7] = 0;\n out[8] = 1;\n return out;\n}\n/**\r\n * Copies the values from a mat2d into a mat3\r\n *\r\n * @param {mat3} out the receiving matrix\r\n * @param {mat2d} a the matrix to copy\r\n * @returns {mat3} out\r\n **/\n\nexport function fromMat2d(out, a) {\n out[0] = a[0];\n out[1] = a[1];\n out[2] = 0;\n out[3] = a[2];\n out[4] = a[3];\n out[5] = 0;\n out[6] = a[4];\n out[7] = a[5];\n out[8] = 1;\n return out;\n}\n/**\r\n * Calculates a 3x3 matrix from the given quaternion\r\n *\r\n * @param {mat3} out mat3 receiving operation result\r\n * @param {quat} q Quaternion to create matrix from\r\n *\r\n * @returns {mat3} out\r\n */\n\nexport function fromQuat(out, q) {\n var x = q[0],\n y = q[1],\n z = q[2],\n w = q[3];\n var x2 = x + x;\n var y2 = y + y;\n var z2 = z + z;\n var xx = x * x2;\n var yx = y * x2;\n var yy = y * y2;\n var zx = z * x2;\n var zy = z * y2;\n var zz = z * z2;\n var wx = w * x2;\n var wy = w * y2;\n var wz = w * z2;\n out[0] = 1 - yy - zz;\n out[3] = yx - wz;\n out[6] = zx + wy;\n out[1] = yx + wz;\n out[4] = 1 - xx - zz;\n out[7] = zy - wx;\n out[2] = zx - wy;\n out[5] = zy + wx;\n out[8] = 1 - xx - yy;\n return out;\n}\n/**\r\n * Calculates a 3x3 normal matrix (transpose inverse) from the 4x4 matrix\r\n *\r\n * @param {mat3} out mat3 receiving operation result\r\n * @param {mat4} a Mat4 to derive the normal matrix from\r\n *\r\n * @returns {mat3} out\r\n */\n\nexport function normalFromMat4(out, a) {\n var a00 = a[0],\n a01 = a[1],\n a02 = a[2],\n a03 = a[3];\n var a10 = a[4],\n a11 = a[5],\n a12 = a[6],\n a13 = a[7];\n var a20 = a[8],\n a21 = a[9],\n a22 = a[10],\n a23 = a[11];\n var a30 = a[12],\n a31 = a[13],\n a32 = a[14],\n a33 = a[15];\n var b00 = a00 * a11 - a01 * a10;\n var b01 = a00 * a12 - a02 * a10;\n var b02 = a00 * a13 - a03 * a10;\n var b03 = a01 * a12 - a02 * a11;\n var b04 = a01 * a13 - a03 * a11;\n var b05 = a02 * a13 - a03 * a12;\n var b06 = a20 * a31 - a21 * a30;\n var b07 = a20 * a32 - a22 * a30;\n var b08 = a20 * a33 - a23 * a30;\n var b09 = a21 * a32 - a22 * a31;\n var b10 = a21 * a33 - a23 * a31;\n var b11 = a22 * a33 - a23 * a32; // Calculate the determinant\n\n var det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;\n\n if (!det) {\n return null;\n }\n\n det = 1.0 / det;\n out[0] = (a11 * b11 - a12 * b10 + a13 * b09) * det;\n out[1] = (a12 * b08 - a10 * b11 - a13 * b07) * det;\n out[2] = (a10 * b10 - a11 * b08 + a13 * b06) * det;\n out[3] = (a02 * b10 - a01 * b11 - a03 * b09) * det;\n out[4] = (a00 * b11 - a02 * b08 + a03 * b07) * det;\n out[5] = (a01 * b08 - a00 * b10 - a03 * b06) * det;\n out[6] = (a31 * b05 - a32 * b04 + a33 * b03) * det;\n out[7] = (a32 * b02 - a30 * b05 - a33 * b01) * det;\n out[8] = (a30 * b04 - a31 * b02 + a33 * b00) * det;\n return out;\n}\n/**\r\n * Generates a 2D projection matrix with the given bounds\r\n *\r\n * @param {mat3} out mat3 frustum matrix will be written into\r\n * @param {number} width Width of your gl context\r\n * @param {number} height Height of gl context\r\n * @returns {mat3} out\r\n */\n\nexport function projection(out, width, height) {\n out[0] = 2 / width;\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = -2 / height;\n out[5] = 0;\n out[6] = -1;\n out[7] = 1;\n out[8] = 1;\n return out;\n}\n/**\r\n * Returns a string representation of a mat3\r\n *\r\n * @param {mat3} a matrix to represent as a string\r\n * @returns {String} string representation of the matrix\r\n */\n\nexport function str(a) {\n return \"mat3(\" + a[0] + \", \" + a[1] + \", \" + a[2] + \", \" + a[3] + \", \" + a[4] + \", \" + a[5] + \", \" + a[6] + \", \" + a[7] + \", \" + a[8] + \")\";\n}\n/**\r\n * Returns Frobenius norm of a mat3\r\n *\r\n * @param {mat3} a the matrix to calculate Frobenius norm of\r\n * @returns {Number} Frobenius norm\r\n */\n\nexport function frob(a) {\n return Math.hypot(a[0], a[1], a[2], a[3], a[4], a[5], a[6], a[7], a[8]);\n}\n/**\r\n * Adds two mat3's\r\n *\r\n * @param {mat3} out the receiving matrix\r\n * @param {mat3} a the first operand\r\n * @param {mat3} b the second operand\r\n * @returns {mat3} out\r\n */\n\nexport function add(out, a, b) {\n out[0] = a[0] + b[0];\n out[1] = a[1] + b[1];\n out[2] = a[2] + b[2];\n out[3] = a[3] + b[3];\n out[4] = a[4] + b[4];\n out[5] = a[5] + b[5];\n out[6] = a[6] + b[6];\n out[7] = a[7] + b[7];\n out[8] = a[8] + b[8];\n return out;\n}\n/**\r\n * Subtracts matrix b from matrix a\r\n *\r\n * @param {mat3} out the receiving matrix\r\n * @param {mat3} a the first operand\r\n * @param {mat3} b the second operand\r\n * @returns {mat3} out\r\n */\n\nexport function subtract(out, a, b) {\n out[0] = a[0] - b[0];\n out[1] = a[1] - b[1];\n out[2] = a[2] - b[2];\n out[3] = a[3] - b[3];\n out[4] = a[4] - b[4];\n out[5] = a[5] - b[5];\n out[6] = a[6] - b[6];\n out[7] = a[7] - b[7];\n out[8] = a[8] - b[8];\n return out;\n}\n/**\r\n * Multiply each element of the matrix by a scalar.\r\n *\r\n * @param {mat3} out the receiving matrix\r\n * @param {mat3} a the matrix to scale\r\n * @param {Number} b amount to scale the matrix's elements by\r\n * @returns {mat3} out\r\n */\n\nexport function multiplyScalar(out, a, b) {\n out[0] = a[0] * b;\n out[1] = a[1] * b;\n out[2] = a[2] * b;\n out[3] = a[3] * b;\n out[4] = a[4] * b;\n out[5] = a[5] * b;\n out[6] = a[6] * b;\n out[7] = a[7] * b;\n out[8] = a[8] * b;\n return out;\n}\n/**\r\n * Adds two mat3's after multiplying each element of the second operand by a scalar value.\r\n *\r\n * @param {mat3} out the receiving vector\r\n * @param {mat3} a the first operand\r\n * @param {mat3} b the second operand\r\n * @param {Number} scale the amount to scale b's elements by before adding\r\n * @returns {mat3} out\r\n */\n\nexport function multiplyScalarAndAdd(out, a, b, scale) {\n out[0] = a[0] + b[0] * scale;\n out[1] = a[1] + b[1] * scale;\n out[2] = a[2] + b[2] * scale;\n out[3] = a[3] + b[3] * scale;\n out[4] = a[4] + b[4] * scale;\n out[5] = a[5] + b[5] * scale;\n out[6] = a[6] + b[6] * scale;\n out[7] = a[7] + b[7] * scale;\n out[8] = a[8] + b[8] * scale;\n return out;\n}\n/**\r\n * Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)\r\n *\r\n * @param {mat3} a The first matrix.\r\n * @param {mat3} b The second matrix.\r\n * @returns {Boolean} True if the matrices are equal, false otherwise.\r\n */\n\nexport function exactEquals(a, b) {\n return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3] && a[4] === b[4] && a[5] === b[5] && a[6] === b[6] && a[7] === b[7] && a[8] === b[8];\n}\n/**\r\n * Returns whether or not the matrices have approximately the same elements in the same position.\r\n *\r\n * @param {mat3} a The first matrix.\r\n * @param {mat3} b The second matrix.\r\n * @returns {Boolean} True if the matrices are equal, false otherwise.\r\n */\n\nexport function equals(a, b) {\n var a0 = a[0],\n a1 = a[1],\n a2 = a[2],\n a3 = a[3],\n a4 = a[4],\n a5 = a[5],\n a6 = a[6],\n a7 = a[7],\n a8 = a[8];\n var b0 = b[0],\n b1 = b[1],\n b2 = b[2],\n b3 = b[3],\n b4 = b[4],\n b5 = b[5],\n b6 = b[6],\n b7 = b[7],\n b8 = b[8];\n return Math.abs(a0 - b0) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a0), Math.abs(b0)) && Math.abs(a1 - b1) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a1), Math.abs(b1)) && Math.abs(a2 - b2) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a2), Math.abs(b2)) && Math.abs(a3 - b3) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a3), Math.abs(b3)) && Math.abs(a4 - b4) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a4), Math.abs(b4)) && Math.abs(a5 - b5) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a5), Math.abs(b5)) && Math.abs(a6 - b6) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a6), Math.abs(b6)) && Math.abs(a7 - b7) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a7), Math.abs(b7)) && Math.abs(a8 - b8) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a8), Math.abs(b8));\n}\n/**\r\n * Alias for {@link mat3.multiply}\r\n * @function\r\n */\n\nexport var mul = multiply;\n/**\r\n * Alias for {@link mat3.subtract}\r\n * @function\r\n */\n\nexport var sub = subtract;", "import * as glMatrix from \"./common.js\";\n/**\r\n * 2x2 Matrix\r\n * @module mat2\r\n */\n\n/**\r\n * Creates a new identity mat2\r\n *\r\n * @returns {mat2} a new 2x2 matrix\r\n */\n\nexport function create() {\n var out = new glMatrix.ARRAY_TYPE(4);\n\n if (glMatrix.ARRAY_TYPE != Float32Array) {\n out[1] = 0;\n out[2] = 0;\n }\n\n out[0] = 1;\n out[3] = 1;\n return out;\n}\n/**\r\n * Creates a new mat2 initialized with values from an existing matrix\r\n *\r\n * @param {mat2} a matrix to clone\r\n * @returns {mat2} a new 2x2 matrix\r\n */\n\nexport function clone(a) {\n var out = new glMatrix.ARRAY_TYPE(4);\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n out[3] = a[3];\n return out;\n}\n/**\r\n * Copy the values from one mat2 to another\r\n *\r\n * @param {mat2} out the receiving matrix\r\n * @param {mat2} a the source matrix\r\n * @returns {mat2} out\r\n */\n\nexport function copy(out, a) {\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n out[3] = a[3];\n return out;\n}\n/**\r\n * Set a mat2 to the identity matrix\r\n *\r\n * @param {mat2} out the receiving matrix\r\n * @returns {mat2} out\r\n */\n\nexport function identity(out) {\n out[0] = 1;\n out[1] = 0;\n out[2] = 0;\n out[3] = 1;\n return out;\n}\n/**\r\n * Create a new mat2 with the given values\r\n *\r\n * @param {Number} m00 Component in column 0, row 0 position (index 0)\r\n * @param {Number} m01 Component in column 0, row 1 position (index 1)\r\n * @param {Number} m10 Component in column 1, row 0 position (index 2)\r\n * @param {Number} m11 Component in column 1, row 1 position (index 3)\r\n * @returns {mat2} out A new 2x2 matrix\r\n */\n\nexport function fromValues(m00, m01, m10, m11) {\n var out = new glMatrix.ARRAY_TYPE(4);\n out[0] = m00;\n out[1] = m01;\n out[2] = m10;\n out[3] = m11;\n return out;\n}\n/**\r\n * Set the components of a mat2 to the given values\r\n *\r\n * @param {mat2} out the receiving matrix\r\n * @param {Number} m00 Component in column 0, row 0 position (index 0)\r\n * @param {Number} m01 Component in column 0, row 1 position (index 1)\r\n * @param {Number} m10 Component in column 1, row 0 position (index 2)\r\n * @param {Number} m11 Component in column 1, row 1 position (index 3)\r\n * @returns {mat2} out\r\n */\n\nexport function set(out, m00, m01, m10, m11) {\n out[0] = m00;\n out[1] = m01;\n out[2] = m10;\n out[3] = m11;\n return out;\n}\n/**\r\n * Transpose the values of a mat2\r\n *\r\n * @param {mat2} out the receiving matrix\r\n * @param {mat2} a the source matrix\r\n * @returns {mat2} out\r\n */\n\nexport function transpose(out, a) {\n // If we are transposing ourselves we can skip a few steps but have to cache\n // some values\n if (out === a) {\n var a1 = a[1];\n out[1] = a[2];\n out[2] = a1;\n } else {\n out[0] = a[0];\n out[1] = a[2];\n out[2] = a[1];\n out[3] = a[3];\n }\n\n return out;\n}\n/**\r\n * Inverts a mat2\r\n *\r\n * @param {mat2} out the receiving matrix\r\n * @param {mat2} a the source matrix\r\n * @returns {mat2} out\r\n */\n\nexport function invert(out, a) {\n var a0 = a[0],\n a1 = a[1],\n a2 = a[2],\n a3 = a[3]; // Calculate the determinant\n\n var det = a0 * a3 - a2 * a1;\n\n if (!det) {\n return null;\n }\n\n det = 1.0 / det;\n out[0] = a3 * det;\n out[1] = -a1 * det;\n out[2] = -a2 * det;\n out[3] = a0 * det;\n return out;\n}\n/**\r\n * Calculates the adjugate of a mat2\r\n *\r\n * @param {mat2} out the receiving matrix\r\n * @param {mat2} a the source matrix\r\n * @returns {mat2} out\r\n */\n\nexport function adjoint(out, a) {\n // Caching this value is nessecary if out == a\n var a0 = a[0];\n out[0] = a[3];\n out[1] = -a[1];\n out[2] = -a[2];\n out[3] = a0;\n return out;\n}\n/**\r\n * Calculates the determinant of a mat2\r\n *\r\n * @param {mat2} a the source matrix\r\n * @returns {Number} determinant of a\r\n */\n\nexport function determinant(a) {\n return a[0] * a[3] - a[2] * a[1];\n}\n/**\r\n * Multiplies two mat2's\r\n *\r\n * @param {mat2} out the receiving matrix\r\n * @param {mat2} a the first operand\r\n * @param {mat2} b the second operand\r\n * @returns {mat2} out\r\n */\n\nexport function multiply(out, a, b) {\n var a0 = a[0],\n a1 = a[1],\n a2 = a[2],\n a3 = a[3];\n var b0 = b[0],\n b1 = b[1],\n b2 = b[2],\n b3 = b[3];\n out[0] = a0 * b0 + a2 * b1;\n out[1] = a1 * b0 + a3 * b1;\n out[2] = a0 * b2 + a2 * b3;\n out[3] = a1 * b2 + a3 * b3;\n return out;\n}\n/**\r\n * Rotates a mat2 by the given angle\r\n *\r\n * @param {mat2} out the receiving matrix\r\n * @param {mat2} a the matrix to rotate\r\n * @param {Number} rad the angle to rotate the matrix by\r\n * @returns {mat2} out\r\n */\n\nexport function rotate(out, a, rad) {\n var a0 = a[0],\n a1 = a[1],\n a2 = a[2],\n a3 = a[3];\n var s = Math.sin(rad);\n var c = Math.cos(rad);\n out[0] = a0 * c + a2 * s;\n out[1] = a1 * c + a3 * s;\n out[2] = a0 * -s + a2 * c;\n out[3] = a1 * -s + a3 * c;\n return out;\n}\n/**\r\n * Scales the mat2 by the dimensions in the given vec2\r\n *\r\n * @param {mat2} out the receiving matrix\r\n * @param {mat2} a the matrix to rotate\r\n * @param {vec2} v the vec2 to scale the matrix by\r\n * @returns {mat2} out\r\n **/\n\nexport function scale(out, a, v) {\n var a0 = a[0],\n a1 = a[1],\n a2 = a[2],\n a3 = a[3];\n var v0 = v[0],\n v1 = v[1];\n out[0] = a0 * v0;\n out[1] = a1 * v0;\n out[2] = a2 * v1;\n out[3] = a3 * v1;\n return out;\n}\n/**\r\n * Creates a matrix from a given angle\r\n * This is equivalent to (but much faster than):\r\n *\r\n * mat2.identity(dest);\r\n * mat2.rotate(dest, dest, rad);\r\n *\r\n * @param {mat2} out mat2 receiving operation result\r\n * @param {Number} rad the angle to rotate the matrix by\r\n * @returns {mat2} out\r\n */\n\nexport function fromRotation(out, rad) {\n var s = Math.sin(rad);\n var c = Math.cos(rad);\n out[0] = c;\n out[1] = s;\n out[2] = -s;\n out[3] = c;\n return out;\n}\n/**\r\n * Creates a matrix from a vector scaling\r\n * This is equivalent to (but much faster than):\r\n *\r\n * mat2.identity(dest);\r\n * mat2.scale(dest, dest, vec);\r\n *\r\n * @param {mat2} out mat2 receiving operation result\r\n * @param {vec2} v Scaling vector\r\n * @returns {mat2} out\r\n */\n\nexport function fromScaling(out, v) {\n out[0] = v[0];\n out[1] = 0;\n out[2] = 0;\n out[3] = v[1];\n return out;\n}\n/**\r\n * Returns a string representation of a mat2\r\n *\r\n * @param {mat2} a matrix to represent as a string\r\n * @returns {String} string representation of the matrix\r\n */\n\nexport function str(a) {\n return \"mat2(\" + a[0] + \", \" + a[1] + \", \" + a[2] + \", \" + a[3] + \")\";\n}\n/**\r\n * Returns Frobenius norm of a mat2\r\n *\r\n * @param {mat2} a the matrix to calculate Frobenius norm of\r\n * @returns {Number} Frobenius norm\r\n */\n\nexport function frob(a) {\n return Math.hypot(a[0], a[1], a[2], a[3]);\n}\n/**\r\n * Returns L, D and U matrices (Lower triangular, Diagonal and Upper triangular) by factorizing the input matrix\r\n * @param {mat2} L the lower triangular matrix\r\n * @param {mat2} D the diagonal matrix\r\n * @param {mat2} U the upper triangular matrix\r\n * @param {mat2} a the input matrix to factorize\r\n */\n\nexport function LDU(L, D, U, a) {\n L[2] = a[2] / a[0];\n U[0] = a[0];\n U[1] = a[1];\n U[3] = a[3] - L[2] * U[1];\n return [L, D, U];\n}\n/**\r\n * Adds two mat2's\r\n *\r\n * @param {mat2} out the receiving matrix\r\n * @param {mat2} a the first operand\r\n * @param {mat2} b the second operand\r\n * @returns {mat2} out\r\n */\n\nexport function add(out, a, b) {\n out[0] = a[0] + b[0];\n out[1] = a[1] + b[1];\n out[2] = a[2] + b[2];\n out[3] = a[3] + b[3];\n return out;\n}\n/**\r\n * Subtracts matrix b from matrix a\r\n *\r\n * @param {mat2} out the receiving matrix\r\n * @param {mat2} a the first operand\r\n * @param {mat2} b the second operand\r\n * @returns {mat2} out\r\n */\n\nexport function subtract(out, a, b) {\n out[0] = a[0] - b[0];\n out[1] = a[1] - b[1];\n out[2] = a[2] - b[2];\n out[3] = a[3] - b[3];\n return out;\n}\n/**\r\n * Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)\r\n *\r\n * @param {mat2} a The first matrix.\r\n * @param {mat2} b The second matrix.\r\n * @returns {Boolean} True if the matrices are equal, false otherwise.\r\n */\n\nexport function exactEquals(a, b) {\n return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3];\n}\n/**\r\n * Returns whether or not the matrices have approximately the same elements in the same position.\r\n *\r\n * @param {mat2} a The first matrix.\r\n * @param {mat2} b The second matrix.\r\n * @returns {Boolean} True if the matrices are equal, false otherwise.\r\n */\n\nexport function equals(a, b) {\n var a0 = a[0],\n a1 = a[1],\n a2 = a[2],\n a3 = a[3];\n var b0 = b[0],\n b1 = b[1],\n b2 = b[2],\n b3 = b[3];\n return Math.abs(a0 - b0) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a0), Math.abs(b0)) && Math.abs(a1 - b1) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a1), Math.abs(b1)) && Math.abs(a2 - b2) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a2), Math.abs(b2)) && Math.abs(a3 - b3) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a3), Math.abs(b3));\n}\n/**\r\n * Multiply each element of the matrix by a scalar.\r\n *\r\n * @param {mat2} out the receiving matrix\r\n * @param {mat2} a the matrix to scale\r\n * @param {Number} b amount to scale the matrix's elements by\r\n * @returns {mat2} out\r\n */\n\nexport function multiplyScalar(out, a, b) {\n out[0] = a[0] * b;\n out[1] = a[1] * b;\n out[2] = a[2] * b;\n out[3] = a[3] * b;\n return out;\n}\n/**\r\n * Adds two mat2's after multiplying each element of the second operand by a scalar value.\r\n *\r\n * @param {mat2} out the receiving vector\r\n * @param {mat2} a the first operand\r\n * @param {mat2} b the second operand\r\n * @param {Number} scale the amount to scale b's elements by before adding\r\n * @returns {mat2} out\r\n */\n\nexport function multiplyScalarAndAdd(out, a, b, scale) {\n out[0] = a[0] + b[0] * scale;\n out[1] = a[1] + b[1] * scale;\n out[2] = a[2] + b[2] * scale;\n out[3] = a[3] + b[3] * scale;\n return out;\n}\n/**\r\n * Alias for {@link mat2.multiply}\r\n * @function\r\n */\n\nexport var mul = multiply;\n/**\r\n * Alias for {@link mat2.subtract}\r\n * @function\r\n */\n\nexport var sub = subtract;", "// @flow\n\n/**\n * Deeply compares two object literals.\n *\n * @private\n */\nfunction deepEqual(a: ?mixed, b: ?mixed): boolean {\n if (Array.isArray(a)) {\n if (!Array.isArray(b) || a.length !== b.length) return false;\n for (let i = 0; i < a.length; i++) {\n if (!deepEqual(a[i], b[i])) return false;\n }\n return true;\n }\n if (typeof a === 'object' && a !== null && b !== null) {\n if (!(typeof b === 'object')) return false;\n const keys = Object.keys(a);\n if (keys.length !== Object.keys(b).length) return false;\n for (const key in a) {\n if (!deepEqual(a[key], b[key])) return false;\n }\n return true;\n }\n return a === b;\n}\n\nexport default deepEqual;\n", "\nimport refProperties from './util/ref_properties';\n\nfunction stringify(obj) {\n const type = typeof obj;\n if (type === 'number' || type === 'boolean' || type === 'string' || obj === undefined || obj === null)\n return JSON.stringify(obj);\n\n if (Array.isArray(obj)) {\n let str = '[';\n for (const val of obj) {\n str += `${stringify(val)},`;\n }\n return `${str}]`;\n }\n\n const keys = Object.keys(obj).sort();\n\n let str = '{';\n for (let i = 0; i < keys.length; i++) {\n str += `${JSON.stringify(keys[i])}:${stringify(obj[keys[i]])},`;\n }\n return `${str}}`;\n}\n\nfunction getKey(layer) {\n let key = '';\n for (const k of refProperties) {\n key += `/${stringify(layer[k])}`;\n }\n return key;\n}\n\nexport default groupByLayout;\n\n/**\n * Given an array of layers, return an array of arrays of layers where all\n * layers in each group have identical layout-affecting properties. These\n * are the properties that were formerly used by explicit `ref` mechanism\n * for layers: 'type', 'source', 'source-layer', 'minzoom', 'maxzoom',\n * 'filter', and 'layout'.\n *\n * The input is not modified. The output layers are references to the\n * input layers.\n *\n * @private\n * @param {Array} layers\n * @param {Object} [cachedKeys] - an object to keep already calculated keys.\n * @returns {Array>}\n */\nfunction groupByLayout(layers, cachedKeys) {\n const groups = {};\n\n for (let i = 0; i < layers.length; i++) {\n\n const k = (cachedKeys && cachedKeys[layers[i].id]) || getKey(layers[i]);\n // update the cache if there is one\n if (cachedKeys)\n cachedKeys[layers[i].id] = k;\n\n let group = groups[k];\n if (!group) {\n group = groups[k] = [];\n }\n group.push(layers[i]);\n }\n\n const result = [];\n\n for (const k in groups) {\n result.push(groups[k]);\n }\n\n return result;\n}\n", "// @flow\n\nimport StyleLayer from './style_layer';\nimport createStyleLayer from './create_style_layer';\n\nimport {values} from '../util/util';\nimport featureFilter from '../style-spec/feature_filter';\nimport groupByLayout from '../style-spec/group_by_layout';\n\nimport type {TypedStyleLayer} from './style_layer/typed_style_layer';\nimport type {LayerSpecification} from '../style-spec/types';\n\nexport type LayerConfigs = {[_: string]: LayerSpecification };\nexport type Family = Array;\n\nclass StyleLayerIndex {\n familiesBySource: { [source: string]: { [sourceLayer: string]: Array> } };\n keyCache: { [source: string]: string };\n\n _layerConfigs: LayerConfigs;\n _layers: {[_: string]: StyleLayer };\n\n constructor(layerConfigs: ?Array) {\n this.keyCache = {};\n if (layerConfigs) {\n this.replace(layerConfigs);\n }\n }\n\n replace(layerConfigs: Array) {\n this._layerConfigs = {};\n this._layers = {};\n this.update(layerConfigs, []);\n }\n\n update(layerConfigs: Array, removedIds: Array) {\n for (const layerConfig of layerConfigs) {\n this._layerConfigs[layerConfig.id] = layerConfig;\n\n const layer = this._layers[layerConfig.id] = createStyleLayer(layerConfig);\n layer._featureFilter = featureFilter(layer.filter);\n if (this.keyCache[layerConfig.id])\n delete this.keyCache[layerConfig.id];\n }\n for (const id of removedIds) {\n delete this.keyCache[id];\n delete this._layerConfigs[id];\n delete this._layers[id];\n }\n\n this.familiesBySource = {};\n\n const groups = groupByLayout(values(this._layerConfigs), this.keyCache);\n\n for (const layerConfigs of groups) {\n const layers = layerConfigs.map((layerConfig) => this._layers[layerConfig.id]);\n\n const layer = layers[0];\n if (layer.visibility === 'none') {\n continue;\n }\n\n const sourceId = layer.source || '';\n let sourceGroup = this.familiesBySource[sourceId];\n if (!sourceGroup) {\n sourceGroup = this.familiesBySource[sourceId] = {};\n }\n\n const sourceLayerId = layer.sourceLayer || '_geojsonTileLayer';\n let sourceLayerFamilies = sourceGroup[sourceLayerId];\n if (!sourceLayerFamilies) {\n sourceLayerFamilies = sourceGroup[sourceLayerId] = [];\n }\n\n sourceLayerFamilies.push(layers);\n }\n }\n}\n\nexport default StyleLayerIndex;\n", "// @flow\n\nimport {AlphaImage} from '../util/image';\nimport {register} from '../util/web_worker_transfer';\nimport potpack from 'potpack';\n\nimport type {GlyphMetrics, StyleGlyph} from '../style/style_glyph';\n\nconst padding = 1;\n\nexport type Rect = {\n x: number,\n y: number,\n w: number,\n h: number\n};\n\nexport type GlyphPosition = {\n rect: Rect,\n metrics: GlyphMetrics\n};\n\nexport type GlyphPositions = {[_: string]: {[_: number]: GlyphPosition } }\n\nexport default class GlyphAtlas {\n image: AlphaImage;\n positions: GlyphPositions;\n\n constructor(stacks: {[_: string]: {[_: number]: ?StyleGlyph } }) {\n const positions = {};\n const bins = [];\n\n for (const stack in stacks) {\n const glyphs = stacks[stack];\n const stackPositions = positions[stack] = {};\n\n for (const id in glyphs) {\n const src = glyphs[+id];\n if (!src || src.bitmap.width === 0 || src.bitmap.height === 0) continue;\n\n const bin = {\n x: 0,\n y: 0,\n w: src.bitmap.width + 2 * padding,\n h: src.bitmap.height + 2 * padding\n };\n bins.push(bin);\n stackPositions[id] = {rect: bin, metrics: src.metrics};\n }\n }\n\n const {w, h} = potpack(bins);\n const image = new AlphaImage({width: w || 1, height: h || 1});\n\n for (const stack in stacks) {\n const glyphs = stacks[stack];\n\n for (const id in glyphs) {\n const src = glyphs[+id];\n if (!src || src.bitmap.width === 0 || src.bitmap.height === 0) continue;\n const bin = positions[stack][id].rect;\n AlphaImage.copy(src.bitmap, image, {x: 0, y: 0}, {x: bin.x + padding, y: bin.y + padding}, src.bitmap);\n }\n }\n\n this.image = image;\n this.positions = positions;\n }\n}\n\nregister('GlyphAtlas', GlyphAtlas);\n", "// @flow\n\nimport FeatureIndex from '../data/feature_index';\n\nimport {performSymbolLayout} from '../symbol/symbol_layout';\nimport {CollisionBoxArray} from '../data/array_types';\nimport DictionaryCoder from '../util/dictionary_coder';\nimport SymbolBucket from '../data/bucket/symbol_bucket';\nimport LineBucket from '../data/bucket/line_bucket';\nimport FillBucket from '../data/bucket/fill_bucket';\nimport FillExtrusionBucket from '../data/bucket/fill_extrusion_bucket';\nimport {warnOnce, mapObject, values} from '../util/util';\nimport assert from 'assert';\nimport ImageAtlas from '../render/image_atlas';\nimport GlyphAtlas from '../render/glyph_atlas';\nimport EvaluationParameters from '../style/evaluation_parameters';\nimport {OverscaledTileID} from './tile_id';\n\nimport type {Bucket} from '../data/bucket';\nimport type Actor from '../util/actor';\nimport type StyleLayer from '../style/style_layer';\nimport type StyleLayerIndex from '../style/style_layer_index';\nimport type {StyleImage} from '../style/style_image';\nimport type {StyleGlyph} from '../style/style_glyph';\nimport type {\n WorkerTileParameters,\n WorkerTileCallback,\n} from '../source/worker_source';\nimport type {PromoteIdSpecification} from '../style-spec/types';\n\nclass WorkerTile {\n tileID: OverscaledTileID;\n uid: string;\n zoom: number;\n pixelRatio: number;\n tileSize: number;\n source: string;\n promoteId: ?PromoteIdSpecification;\n overscaling: number;\n showCollisionBoxes: boolean;\n collectResourceTiming: boolean;\n returnDependencies: boolean;\n\n status: 'parsing' | 'done';\n data: VectorTile;\n collisionBoxArray: CollisionBoxArray;\n\n abort: ?() => void;\n reloadCallback: WorkerTileCallback;\n vectorTile: VectorTile;\n\n constructor(params: WorkerTileParameters) {\n this.tileID = new OverscaledTileID(params.tileID.overscaledZ, params.tileID.wrap, params.tileID.canonical.z, params.tileID.canonical.x, params.tileID.canonical.y);\n this.uid = params.uid;\n this.zoom = params.zoom;\n this.pixelRatio = params.pixelRatio;\n this.tileSize = params.tileSize;\n this.source = params.source;\n this.overscaling = this.tileID.overscaleFactor();\n this.showCollisionBoxes = params.showCollisionBoxes;\n this.collectResourceTiming = !!params.collectResourceTiming;\n this.returnDependencies = !!params.returnDependencies;\n this.promoteId = params.promoteId;\n }\n\n parse(data: VectorTile, layerIndex: StyleLayerIndex, availableImages: Array, actor: Actor, callback: WorkerTileCallback) {\n this.status = 'parsing';\n this.data = data;\n\n this.collisionBoxArray = new CollisionBoxArray();\n const sourceLayerCoder = new DictionaryCoder(Object.keys(data.layers).sort());\n\n const featureIndex = new FeatureIndex(this.tileID, this.promoteId);\n featureIndex.bucketLayerIDs = [];\n\n const buckets: {[_: string]: Bucket} = {};\n\n const options = {\n featureIndex,\n iconDependencies: {},\n patternDependencies: {},\n glyphDependencies: {},\n availableImages\n };\n\n const layerFamilies = layerIndex.familiesBySource[this.source];\n for (const sourceLayerId in layerFamilies) {\n const sourceLayer = data.layers[sourceLayerId];\n if (!sourceLayer) {\n continue;\n }\n\n if (sourceLayer.version === 1) {\n warnOnce(`Vector tile source \"${this.source}\" layer \"${sourceLayerId}\" ` +\n `does not use vector tile spec v2 and therefore may have some rendering errors.`);\n }\n\n const sourceLayerIndex = sourceLayerCoder.encode(sourceLayerId);\n const features = [];\n for (let index = 0; index < sourceLayer.length; index++) {\n const feature = sourceLayer.feature(index);\n const id = featureIndex.getId(feature, sourceLayerId);\n features.push({feature, id, index, sourceLayerIndex});\n }\n\n for (const family of layerFamilies[sourceLayerId]) {\n const layer = family[0];\n\n assert(layer.source === this.source);\n if (layer.minzoom && this.zoom < Math.floor(layer.minzoom)) continue;\n if (layer.maxzoom && this.zoom >= layer.maxzoom) continue;\n if (layer.visibility === 'none') continue;\n\n recalculateLayers(family, this.zoom, availableImages);\n\n const bucket = buckets[layer.id] = layer.createBucket({\n index: featureIndex.bucketLayerIDs.length,\n layers: family,\n zoom: this.zoom,\n pixelRatio: this.pixelRatio,\n overscaling: this.overscaling,\n collisionBoxArray: this.collisionBoxArray,\n sourceLayerIndex,\n sourceID: this.source\n });\n\n bucket.populate(features, options, this.tileID.canonical);\n featureIndex.bucketLayerIDs.push(family.map((l) => l.id));\n }\n }\n\n let error: ?Error;\n let glyphMap: ?{[_: string]: {[_: number]: ?StyleGlyph}};\n let iconMap: ?{[_: string]: StyleImage};\n let patternMap: ?{[_: string]: StyleImage};\n\n const stacks = mapObject(options.glyphDependencies, (glyphs) => Object.keys(glyphs).map(Number));\n if (Object.keys(stacks).length) {\n actor.send('getGlyphs', {uid: this.uid, stacks}, (err, result) => {\n if (!error) {\n error = err;\n glyphMap = result;\n maybePrepare.call(this);\n }\n });\n } else {\n glyphMap = {};\n }\n\n const icons = Object.keys(options.iconDependencies);\n if (icons.length) {\n actor.send('getImages', {icons, source: this.source, tileID: this.tileID, type: 'icons'}, (err, result) => {\n if (!error) {\n error = err;\n iconMap = result;\n maybePrepare.call(this);\n }\n });\n } else {\n iconMap = {};\n }\n\n const patterns = Object.keys(options.patternDependencies);\n if (patterns.length) {\n actor.send('getImages', {icons: patterns, source: this.source, tileID: this.tileID, type: 'patterns'}, (err, result) => {\n if (!error) {\n error = err;\n patternMap = result;\n maybePrepare.call(this);\n }\n });\n } else {\n patternMap = {};\n }\n\n maybePrepare.call(this);\n\n function maybePrepare() {\n if (error) {\n return callback(error);\n } else if (glyphMap && iconMap && patternMap) {\n const glyphAtlas = new GlyphAtlas(glyphMap);\n const imageAtlas = new ImageAtlas(iconMap, patternMap);\n\n for (const key in buckets) {\n const bucket = buckets[key];\n if (bucket instanceof SymbolBucket) {\n recalculateLayers(bucket.layers, this.zoom, availableImages);\n performSymbolLayout(bucket, glyphMap, glyphAtlas.positions, iconMap, imageAtlas.iconPositions, this.showCollisionBoxes, this.tileID.canonical);\n } else if (bucket.hasPattern &&\n (bucket instanceof LineBucket ||\n bucket instanceof FillBucket ||\n bucket instanceof FillExtrusionBucket)) {\n recalculateLayers(bucket.layers, this.zoom, availableImages);\n bucket.addFeatures(options, this.tileID.canonical, imageAtlas.patternPositions);\n }\n }\n\n this.status = 'done';\n callback(null, {\n buckets: values(buckets).filter(b => !b.isEmpty()),\n featureIndex,\n collisionBoxArray: this.collisionBoxArray,\n glyphAtlasImage: glyphAtlas.image,\n imageAtlas,\n // Only used for benchmarking:\n glyphMap: this.returnDependencies ? glyphMap : null,\n iconMap: this.returnDependencies ? iconMap : null,\n glyphPositions: this.returnDependencies ? glyphAtlas.positions : null\n });\n }\n }\n }\n}\n\nfunction recalculateLayers(layers: $ReadOnlyArray, zoom: number, availableImages: Array) {\n // Layers are shared and may have been used by a WorkerTile with a different zoom.\n const parameters = new EvaluationParameters(zoom);\n for (const layer of layers) {\n layer.recalculate(parameters, availableImages);\n }\n}\n\nexport default WorkerTile;\n", "// @flow\n\nimport {getArrayBuffer} from '../util/ajax';\n\nimport vt from '@mapbox/vector-tile';\nimport Protobuf from 'pbf';\nimport WorkerTile from './worker_tile';\nimport {extend} from '../util/util';\nimport {RequestPerformance} from '../util/performance';\n\nimport type {\n WorkerSource,\n WorkerTileParameters,\n WorkerTileCallback,\n TileParameters\n} from '../source/worker_source';\n\nimport type Actor from '../util/actor';\nimport type StyleLayerIndex from '../style/style_layer_index';\nimport type {Callback} from '../types/callback';\n\nexport type LoadVectorTileResult = {\n vectorTile: VectorTile;\n rawData: ArrayBuffer;\n expires?: any;\n cacheControl?: any;\n resourceTiming?: Array;\n};\n\n/**\n * @callback LoadVectorDataCallback\n * @param error\n * @param vectorTile\n * @private\n */\nexport type LoadVectorDataCallback = Callback;\n\nexport type AbortVectorData = () => void;\nexport type LoadVectorData = (params: WorkerTileParameters, callback: LoadVectorDataCallback) => ?AbortVectorData;\n\n/**\n * @private\n */\nfunction loadVectorTile(params: WorkerTileParameters, callback: LoadVectorDataCallback) {\n const request = getArrayBuffer(params.request, (err: ?Error, data: ?ArrayBuffer, cacheControl: ?string, expires: ?string) => {\n if (err) {\n callback(err);\n } else if (data) {\n callback(null, {\n vectorTile: new vt.VectorTile(new Protobuf(data)),\n rawData: data,\n cacheControl,\n expires\n });\n }\n });\n return () => {\n request.cancel();\n callback();\n };\n}\n\n/**\n * The {@link WorkerSource} implementation that supports {@link VectorTileSource}.\n * This class is designed to be easily reused to support custom source types\n * for data formats that can be parsed/converted into an in-memory VectorTile\n * representation. To do so, create it with\n * `new VectorTileWorkerSource(actor, styleLayers, customLoadVectorDataFunction)`.\n *\n * @private\n */\nclass VectorTileWorkerSource implements WorkerSource {\n actor: Actor;\n layerIndex: StyleLayerIndex;\n availableImages: Array;\n loadVectorData: LoadVectorData;\n loading: {[_: string]: WorkerTile };\n loaded: {[_: string]: WorkerTile };\n\n /**\n * @param [loadVectorData] Optional method for custom loading of a VectorTile\n * object based on parameters passed from the main-thread Source. See\n * {@link VectorTileWorkerSource#loadTile}. The default implementation simply\n * loads the pbf at `params.url`.\n * @private\n */\n constructor(actor: Actor, layerIndex: StyleLayerIndex, availableImages: Array, loadVectorData: ?LoadVectorData) {\n this.actor = actor;\n this.layerIndex = layerIndex;\n this.availableImages = availableImages;\n this.loadVectorData = loadVectorData || loadVectorTile;\n this.loading = {};\n this.loaded = {};\n }\n\n /**\n * Implements {@link WorkerSource#loadTile}. Delegates to\n * {@link VectorTileWorkerSource#loadVectorData} (which by default expects\n * a `params.url` property) for fetching and producing a VectorTile object.\n * @private\n */\n loadTile(params: WorkerTileParameters, callback: WorkerTileCallback) {\n const uid = params.uid;\n\n if (!this.loading)\n this.loading = {};\n\n const perf = (params && params.request && params.request.collectResourceTiming) ?\n new RequestPerformance(params.request) : false;\n\n const workerTile = this.loading[uid] = new WorkerTile(params);\n workerTile.abort = this.loadVectorData(params, (err, response) => {\n delete this.loading[uid];\n\n if (err || !response) {\n workerTile.status = 'done';\n this.loaded[uid] = workerTile;\n return callback(err);\n }\n\n const rawTileData = response.rawData;\n const cacheControl = {};\n if (response.expires) cacheControl.expires = response.expires;\n if (response.cacheControl) cacheControl.cacheControl = response.cacheControl;\n\n const resourceTiming = {};\n if (perf) {\n const resourceTimingData = perf.finish();\n // it's necessary to eval the result of getEntriesByName() here via parse/stringify\n // late evaluation in the main thread causes TypeError: illegal invocation\n if (resourceTimingData)\n resourceTiming.resourceTiming = JSON.parse(JSON.stringify(resourceTimingData));\n }\n\n workerTile.vectorTile = response.vectorTile;\n workerTile.parse(response.vectorTile, this.layerIndex, this.availableImages, this.actor, (err, result) => {\n if (err || !result) return callback(err);\n\n // Transferring a copy of rawTileData because the worker needs to retain its copy.\n callback(null, extend({rawTileData: rawTileData.slice(0)}, result, cacheControl, resourceTiming));\n });\n\n this.loaded = this.loaded || {};\n this.loaded[uid] = workerTile;\n });\n }\n\n /**\n * Implements {@link WorkerSource#reloadTile}.\n * @private\n */\n reloadTile(params: WorkerTileParameters, callback: WorkerTileCallback) {\n const loaded = this.loaded,\n uid = params.uid,\n vtSource = this;\n if (loaded && loaded[uid]) {\n const workerTile = loaded[uid];\n workerTile.showCollisionBoxes = params.showCollisionBoxes;\n\n const done = (err, data) => {\n const reloadCallback = workerTile.reloadCallback;\n if (reloadCallback) {\n delete workerTile.reloadCallback;\n workerTile.parse(workerTile.vectorTile, vtSource.layerIndex, this.availableImages, vtSource.actor, reloadCallback);\n }\n callback(err, data);\n };\n\n if (workerTile.status === 'parsing') {\n workerTile.reloadCallback = done;\n } else if (workerTile.status === 'done') {\n // if there was no vector tile data on the initial load, don't try and re-parse tile\n if (workerTile.vectorTile) {\n workerTile.parse(workerTile.vectorTile, this.layerIndex, this.availableImages, this.actor, done);\n } else {\n done();\n }\n }\n }\n }\n\n /**\n * Implements {@link WorkerSource#abortTile}.\n *\n * @param params\n * @param params.uid The UID for this tile.\n * @private\n */\n abortTile(params: TileParameters, callback: WorkerTileCallback) {\n const loading = this.loading,\n uid = params.uid;\n if (loading && loading[uid] && loading[uid].abort) {\n loading[uid].abort();\n delete loading[uid];\n }\n callback();\n }\n\n /**\n * Implements {@link WorkerSource#removeTile}.\n *\n * @param params\n * @param params.uid The UID for this tile.\n * @private\n */\n removeTile(params: TileParameters, callback: WorkerTileCallback) {\n const loaded = this.loaded,\n uid = params.uid;\n if (loaded && loaded[uid]) {\n delete loaded[uid];\n }\n callback();\n }\n}\n\nexport default VectorTileWorkerSource;\n", "// @flow\n\nimport DEMData from '../data/dem_data';\nimport {RGBAImage} from '../util/image';\nimport window from '../util/window';\n\nimport type Actor from '../util/actor';\nimport type {\n WorkerDEMTileParameters,\n WorkerDEMTileCallback,\n TileParameters\n} from './worker_source';\nconst {ImageBitmap} = window;\n\nclass RasterDEMTileWorkerSource {\n actor: Actor;\n loaded: {[_: string]: DEMData};\n offscreenCanvas: OffscreenCanvas;\n offscreenCanvasContext: CanvasRenderingContext2D;\n\n constructor() {\n this.loaded = {};\n }\n\n loadTile(params: WorkerDEMTileParameters, callback: WorkerDEMTileCallback) {\n const {uid, encoding, rawImageData} = params;\n // Main thread will transfer ImageBitmap if offscreen decode with OffscreenCanvas is supported, else it will transfer an already decoded image.\n const imagePixels = (ImageBitmap && rawImageData instanceof ImageBitmap) ? this.getImageData(rawImageData) : rawImageData;\n const dem = new DEMData(uid, imagePixels, encoding);\n this.loaded = this.loaded || {};\n this.loaded[uid] = dem;\n callback(null, dem);\n }\n\n getImageData(imgBitmap: ImageBitmap): RGBAImage {\n // Lazily initialize OffscreenCanvas\n if (!this.offscreenCanvas || !this.offscreenCanvasContext) {\n // Dem tiles are typically 256x256\n this.offscreenCanvas = new OffscreenCanvas(imgBitmap.width, imgBitmap.height);\n this.offscreenCanvasContext = this.offscreenCanvas.getContext('2d');\n }\n\n this.offscreenCanvas.width = imgBitmap.width;\n this.offscreenCanvas.height = imgBitmap.height;\n\n this.offscreenCanvasContext.drawImage(imgBitmap, 0, 0, imgBitmap.width, imgBitmap.height);\n // Insert an additional 1px padding around the image to allow backfilling for neighboring data.\n const imgData = this.offscreenCanvasContext.getImageData(-1, -1, imgBitmap.width + 2, imgBitmap.height + 2);\n this.offscreenCanvasContext.clearRect(0, 0, this.offscreenCanvas.width, this.offscreenCanvas.height);\n return new RGBAImage({width: imgData.width, height: imgData.height}, imgData.data);\n }\n\n removeTile(params: TileParameters) {\n const loaded = this.loaded,\n uid = params.uid;\n if (loaded && loaded[uid]) {\n delete loaded[uid];\n }\n }\n}\n\nexport default RasterDEMTileWorkerSource;\n", "\nmodule.exports = rewind;\n\nfunction rewind(gj, outer) {\n var type = gj && gj.type, i;\n\n if (type === 'FeatureCollection') {\n for (i = 0; i < gj.features.length; i++) rewind(gj.features[i], outer);\n\n } else if (type === 'GeometryCollection') {\n for (i = 0; i < gj.geometries.length; i++) rewind(gj.geometries[i], outer);\n\n } else if (type === 'Feature') {\n rewind(gj.geometry, outer);\n\n } else if (type === 'Polygon') {\n rewindRings(gj.coordinates, outer);\n\n } else if (type === 'MultiPolygon') {\n for (i = 0; i < gj.coordinates.length; i++) rewindRings(gj.coordinates[i], outer);\n }\n\n return gj;\n}\n\nfunction rewindRings(rings, outer) {\n if (rings.length === 0) return;\n\n rewindRing(rings[0], outer);\n for (var i = 1; i < rings.length; i++) {\n rewindRing(rings[i], !outer);\n }\n}\n\nfunction rewindRing(ring, dir) {\n var area = 0, err = 0;\n for (var i = 0, len = ring.length, j = len - 1; i < len; j = i++) {\n var k = (ring[i][0] - ring[j][0]) * (ring[j][1] + ring[i][1]);\n var m = area + k;\n err += Math.abs(area) >= Math.abs(k) ? area - m + k : k - m + area;\n area = m;\n }\n if (area + err >= 0 !== !!dir) ring.reverse();\n}\n", "// @flow\n\nimport Point from '@mapbox/point-geometry';\n\nimport mvt from '@mapbox/vector-tile';\nconst toGeoJSON = mvt.VectorTileFeature.prototype.toGeoJSON;\nimport EXTENT from '../data/extent';\n\n// The feature type used by geojson-vt and supercluster. Should be extracted to\n// global type and used in module definitions for those two modules.\ntype Feature = {\n type: 1,\n id: mixed,\n tags: {[_: string]: string | number | boolean},\n geometry: Array<[number, number]>,\n} | {\n type: 2 | 3,\n id: mixed,\n tags: {[_: string]: string | number | boolean},\n geometry: Array>,\n}\n\nclass FeatureWrapper implements VectorTileFeature {\n _feature: Feature;\n\n extent: number;\n type: 1 | 2 | 3;\n id: number;\n properties: {[_: string]: string | number | boolean};\n\n constructor(feature: Feature) {\n this._feature = feature;\n\n this.extent = EXTENT;\n this.type = feature.type;\n this.properties = feature.tags;\n\n // If the feature has a top-level `id` property, copy it over, but only\n // if it can be coerced to an integer, because this wrapper is used for\n // serializing geojson feature data into vector tile PBF data, and the\n // vector tile spec only supports integer values for feature ids --\n // allowing non-integer values here results in a non-compliant PBF\n // that causes an exception when it is parsed with vector-tile-js\n if ('id' in feature && !isNaN(feature.id)) {\n this.id = parseInt(feature.id, 10);\n }\n }\n\n loadGeometry() {\n if (this._feature.type === 1) {\n const geometry = [];\n for (const point of this._feature.geometry) {\n geometry.push([new Point(point[0], point[1])]);\n }\n return geometry;\n } else {\n const geometry = [];\n for (const ring of this._feature.geometry) {\n const newRing = [];\n for (const point of ring) {\n newRing.push(new Point(point[0], point[1]));\n }\n geometry.push(newRing);\n }\n return geometry;\n }\n }\n\n toGeoJSON(x: number, y: number, z: number) {\n return toGeoJSON.call(this, x, y, z);\n }\n}\n\nclass GeoJSONWrapper implements VectorTile, VectorTileLayer {\n layers: {[_: string]: VectorTileLayer};\n name: string;\n extent: number;\n length: number;\n _features: Array;\n\n constructor(features: Array) {\n this.layers = {'_geojsonTileLayer': this};\n this.name = '_geojsonTileLayer';\n this.extent = EXTENT;\n this.length = features.length;\n this._features = features;\n }\n\n feature(i: number): VectorTileFeature {\n return new FeatureWrapper(this._features[i]);\n }\n}\n\nexport default GeoJSONWrapper;\n", "'use strict'\n\nvar Point = require('@mapbox/point-geometry')\nvar VectorTileFeature = require('@mapbox/vector-tile').VectorTileFeature\n\nmodule.exports = GeoJSONWrapper\n\n// conform to vectortile api\nfunction GeoJSONWrapper (features, options) {\n this.options = options || {}\n this.features = features\n this.length = features.length\n}\n\nGeoJSONWrapper.prototype.feature = function (i) {\n return new FeatureWrapper(this.features[i], this.options.extent)\n}\n\nfunction FeatureWrapper (feature, extent) {\n this.id = typeof feature.id === 'number' ? feature.id : undefined\n this.type = feature.type\n this.rawGeometry = feature.type === 1 ? [feature.geometry] : feature.geometry\n this.properties = feature.tags\n this.extent = extent || 4096\n}\n\nFeatureWrapper.prototype.loadGeometry = function () {\n var rings = this.rawGeometry\n this.geometry = []\n\n for (var i = 0; i < rings.length; i++) {\n var ring = rings[i]\n var newRing = []\n for (var j = 0; j < ring.length; j++) {\n newRing.push(new Point(ring[j][0], ring[j][1]))\n }\n this.geometry.push(newRing)\n }\n return this.geometry\n}\n\nFeatureWrapper.prototype.bbox = function () {\n if (!this.geometry) this.loadGeometry()\n\n var rings = this.geometry\n var x1 = Infinity\n var x2 = -Infinity\n var y1 = Infinity\n var y2 = -Infinity\n\n for (var i = 0; i < rings.length; i++) {\n var ring = rings[i]\n\n for (var j = 0; j < ring.length; j++) {\n var coord = ring[j]\n\n x1 = Math.min(x1, coord.x)\n x2 = Math.max(x2, coord.x)\n y1 = Math.min(y1, coord.y)\n y2 = Math.max(y2, coord.y)\n }\n }\n\n return [x1, y1, x2, y2]\n}\n\nFeatureWrapper.prototype.toGeoJSON = VectorTileFeature.prototype.toGeoJSON\n", "var Pbf = require('pbf')\nvar GeoJSONWrapper = require('./lib/geojson_wrapper')\n\nmodule.exports = fromVectorTileJs\nmodule.exports.fromVectorTileJs = fromVectorTileJs\nmodule.exports.fromGeojsonVt = fromGeojsonVt\nmodule.exports.GeoJSONWrapper = GeoJSONWrapper\n\n/**\n * Serialize a vector-tile-js-created tile to pbf\n *\n * @param {Object} tile\n * @return {Buffer} uncompressed, pbf-serialized tile data\n */\nfunction fromVectorTileJs (tile) {\n var out = new Pbf()\n writeTile(tile, out)\n return out.finish()\n}\n\n/**\n * Serialized a geojson-vt-created tile to pbf.\n *\n * @param {Object} layers - An object mapping layer names to geojson-vt-created vector tile objects\n * @param {Object} [options] - An object specifying the vector-tile specification version and extent that were used to create `layers`.\n * @param {Number} [options.version=1] - Version of vector-tile spec used\n * @param {Number} [options.extent=4096] - Extent of the vector tile\n * @return {Buffer} uncompressed, pbf-serialized tile data\n */\nfunction fromGeojsonVt (layers, options) {\n options = options || {}\n var l = {}\n for (var k in layers) {\n l[k] = new GeoJSONWrapper(layers[k].features, options)\n l[k].name = k\n l[k].version = options.version\n l[k].extent = options.extent\n }\n return fromVectorTileJs({layers: l})\n}\n\nfunction writeTile (tile, pbf) {\n for (var key in tile.layers) {\n pbf.writeMessage(3, writeLayer, tile.layers[key])\n }\n}\n\nfunction writeLayer (layer, pbf) {\n pbf.writeVarintField(15, layer.version || 1)\n pbf.writeStringField(1, layer.name || '')\n pbf.writeVarintField(5, layer.extent || 4096)\n\n var i\n var context = {\n keys: [],\n values: [],\n keycache: {},\n valuecache: {}\n }\n\n for (i = 0; i < layer.length; i++) {\n context.feature = layer.feature(i)\n pbf.writeMessage(2, writeFeature, context)\n }\n\n var keys = context.keys\n for (i = 0; i < keys.length; i++) {\n pbf.writeStringField(3, keys[i])\n }\n\n var values = context.values\n for (i = 0; i < values.length; i++) {\n pbf.writeMessage(4, writeValue, values[i])\n }\n}\n\nfunction writeFeature (context, pbf) {\n var feature = context.feature\n\n if (feature.id !== undefined) {\n pbf.writeVarintField(1, feature.id)\n }\n\n pbf.writeMessage(2, writeProperties, context)\n pbf.writeVarintField(3, feature.type)\n pbf.writeMessage(4, writeGeometry, feature)\n}\n\nfunction writeProperties (context, pbf) {\n var feature = context.feature\n var keys = context.keys\n var values = context.values\n var keycache = context.keycache\n var valuecache = context.valuecache\n\n for (var key in feature.properties) {\n var keyIndex = keycache[key]\n if (typeof keyIndex === 'undefined') {\n keys.push(key)\n keyIndex = keys.length - 1\n keycache[key] = keyIndex\n }\n pbf.writeVarint(keyIndex)\n\n var value = feature.properties[key]\n var type = typeof value\n if (type !== 'string' && type !== 'boolean' && type !== 'number') {\n value = JSON.stringify(value)\n }\n var valueKey = type + ':' + value\n var valueIndex = valuecache[valueKey]\n if (typeof valueIndex === 'undefined') {\n values.push(value)\n valueIndex = values.length - 1\n valuecache[valueKey] = valueIndex\n }\n pbf.writeVarint(valueIndex)\n }\n}\n\nfunction command (cmd, length) {\n return (length << 3) + (cmd & 0x7)\n}\n\nfunction zigzag (num) {\n return (num << 1) ^ (num >> 31)\n}\n\nfunction writeGeometry (feature, pbf) {\n var geometry = feature.loadGeometry()\n var type = feature.type\n var x = 0\n var y = 0\n var rings = geometry.length\n for (var r = 0; r < rings; r++) {\n var ring = geometry[r]\n var count = 1\n if (type === 1) {\n count = ring.length\n }\n pbf.writeVarint(command(1, count)) // moveto\n // do not write polygon closing path as lineto\n var lineCount = type === 3 ? ring.length - 1 : ring.length\n for (var i = 0; i < lineCount; i++) {\n if (i === 1 && type !== 1) {\n pbf.writeVarint(command(2, lineCount - 1)) // lineto\n }\n var dx = ring[i].x - x\n var dy = ring[i].y - y\n pbf.writeVarint(zigzag(dx))\n pbf.writeVarint(zigzag(dy))\n x += dx\n y += dy\n }\n if (type === 3) {\n pbf.writeVarint(command(7, 1)) // closepath\n }\n }\n}\n\nfunction writeValue (value, pbf) {\n var type = typeof value\n if (type === 'string') {\n pbf.writeStringField(1, value)\n } else if (type === 'boolean') {\n pbf.writeBooleanField(7, value)\n } else if (type === 'number') {\n if (value % 1 !== 0) {\n pbf.writeDoubleField(3, value)\n } else if (value < 0) {\n pbf.writeSVarintField(6, value)\n } else {\n pbf.writeVarintField(5, value)\n }\n }\n}\n", "\nexport default function sortKD(ids, coords, nodeSize, left, right, depth) {\n if (right - left <= nodeSize) return;\n\n const m = (left + right) >> 1;\n\n select(ids, coords, m, left, right, depth % 2);\n\n sortKD(ids, coords, nodeSize, left, m - 1, depth + 1);\n sortKD(ids, coords, nodeSize, m + 1, right, depth + 1);\n}\n\nfunction select(ids, coords, k, left, right, inc) {\n\n while (right > left) {\n if (right - left > 600) {\n const n = right - left + 1;\n const m = k - left + 1;\n const z = Math.log(n);\n const s = 0.5 * Math.exp(2 * z / 3);\n const sd = 0.5 * Math.sqrt(z * s * (n - s) / n) * (m - n / 2 < 0 ? -1 : 1);\n const newLeft = Math.max(left, Math.floor(k - m * s / n + sd));\n const newRight = Math.min(right, Math.floor(k + (n - m) * s / n + sd));\n select(ids, coords, k, newLeft, newRight, inc);\n }\n\n const t = coords[2 * k + inc];\n let i = left;\n let j = right;\n\n swapItem(ids, coords, left, k);\n if (coords[2 * right + inc] > t) swapItem(ids, coords, left, right);\n\n while (i < j) {\n swapItem(ids, coords, i, j);\n i++;\n j--;\n while (coords[2 * i + inc] < t) i++;\n while (coords[2 * j + inc] > t) j--;\n }\n\n if (coords[2 * left + inc] === t) swapItem(ids, coords, left, j);\n else {\n j++;\n swapItem(ids, coords, j, right);\n }\n\n if (j <= k) left = j + 1;\n if (k <= j) right = j - 1;\n }\n}\n\nfunction swapItem(ids, coords, i, j) {\n swap(ids, i, j);\n swap(coords, 2 * i, 2 * j);\n swap(coords, 2 * i + 1, 2 * j + 1);\n}\n\nfunction swap(arr, i, j) {\n const tmp = arr[i];\n arr[i] = arr[j];\n arr[j] = tmp;\n}\n", "\nexport default function within(ids, coords, qx, qy, r, nodeSize) {\n const stack = [0, ids.length - 1, 0];\n const result = [];\n const r2 = r * r;\n\n while (stack.length) {\n const axis = stack.pop();\n const right = stack.pop();\n const left = stack.pop();\n\n if (right - left <= nodeSize) {\n for (let i = left; i <= right; i++) {\n if (sqDist(coords[2 * i], coords[2 * i + 1], qx, qy) <= r2) result.push(ids[i]);\n }\n continue;\n }\n\n const m = Math.floor((left + right) / 2);\n\n const x = coords[2 * m];\n const y = coords[2 * m + 1];\n\n if (sqDist(x, y, qx, qy) <= r2) result.push(ids[m]);\n\n const nextAxis = (axis + 1) % 2;\n\n if (axis === 0 ? qx - r <= x : qy - r <= y) {\n stack.push(left);\n stack.push(m - 1);\n stack.push(nextAxis);\n }\n if (axis === 0 ? qx + r >= x : qy + r >= y) {\n stack.push(m + 1);\n stack.push(right);\n stack.push(nextAxis);\n }\n }\n\n return result;\n}\n\nfunction sqDist(ax, ay, bx, by) {\n const dx = ax - bx;\n const dy = ay - by;\n return dx * dx + dy * dy;\n}\n", "\nimport sort from './sort';\nimport range from './range';\nimport within from './within';\n\nconst defaultGetX = p => p[0];\nconst defaultGetY = p => p[1];\n\nexport default class KDBush {\n constructor(points, getX = defaultGetX, getY = defaultGetY, nodeSize = 64, ArrayType = Float64Array) {\n this.nodeSize = nodeSize;\n this.points = points;\n\n const IndexArrayType = points.length < 65536 ? Uint16Array : Uint32Array;\n\n const ids = this.ids = new IndexArrayType(points.length);\n const coords = this.coords = new ArrayType(points.length * 2);\n\n for (let i = 0; i < points.length; i++) {\n ids[i] = i;\n coords[2 * i] = getX(points[i]);\n coords[2 * i + 1] = getY(points[i]);\n }\n\n sort(ids, coords, nodeSize, 0, ids.length - 1, 0);\n }\n\n range(minX, minY, maxX, maxY) {\n return range(this.ids, this.coords, minX, minY, maxX, maxY, this.nodeSize);\n }\n\n within(x, y, r) {\n return within(this.ids, this.coords, x, y, r, this.nodeSize);\n }\n}\n", "\nexport default function range(ids, coords, minX, minY, maxX, maxY, nodeSize) {\n const stack = [0, ids.length - 1, 0];\n const result = [];\n let x, y;\n\n while (stack.length) {\n const axis = stack.pop();\n const right = stack.pop();\n const left = stack.pop();\n\n if (right - left <= nodeSize) {\n for (let i = left; i <= right; i++) {\n x = coords[2 * i];\n y = coords[2 * i + 1];\n if (x >= minX && x <= maxX && y >= minY && y <= maxY) result.push(ids[i]);\n }\n continue;\n }\n\n const m = Math.floor((left + right) / 2);\n\n x = coords[2 * m];\n y = coords[2 * m + 1];\n\n if (x >= minX && x <= maxX && y >= minY && y <= maxY) result.push(ids[m]);\n\n const nextAxis = (axis + 1) % 2;\n\n if (axis === 0 ? minX <= x : minY <= y) {\n stack.push(left);\n stack.push(m - 1);\n stack.push(nextAxis);\n }\n if (axis === 0 ? maxX >= x : maxY >= y) {\n stack.push(m + 1);\n stack.push(right);\n stack.push(nextAxis);\n }\n }\n\n return result;\n}\n", "\nimport KDBush from 'kdbush';\n\nconst defaultOptions = {\n minZoom: 0, // min zoom to generate clusters on\n maxZoom: 16, // max zoom level to cluster the points on\n minPoints: 2, // minimum points to form a cluster\n radius: 40, // cluster radius in pixels\n extent: 512, // tile extent (radius is calculated relative to it)\n nodeSize: 64, // size of the KD-tree leaf node, affects performance\n log: false, // whether to log timing info\n\n // whether to generate numeric ids for input features (in vector tiles)\n generateId: false,\n\n // a reduce function for calculating custom cluster properties\n reduce: null, // (accumulated, props) => { accumulated.sum += props.sum; }\n\n // properties to use for individual points when running the reducer\n map: props => props // props => ({sum: props.my_value})\n};\n\nexport default class Supercluster {\n constructor(options) {\n this.options = extend(Object.create(defaultOptions), options);\n this.trees = new Array(this.options.maxZoom + 1);\n }\n\n load(points) {\n const {log, minZoom, maxZoom, nodeSize} = this.options;\n\n if (log) console.time('total time');\n\n const timerId = `prepare ${ points.length } points`;\n if (log) console.time(timerId);\n\n this.points = points;\n\n // generate a cluster object for each point and index input points into a KD-tree\n let clusters = [];\n for (let i = 0; i < points.length; i++) {\n if (!points[i].geometry) continue;\n clusters.push(createPointCluster(points[i], i));\n }\n this.trees[maxZoom + 1] = new KDBush(clusters, getX, getY, nodeSize, Float32Array);\n\n if (log) console.timeEnd(timerId);\n\n // cluster points on max zoom, then cluster the results on previous zoom, etc.;\n // results in a cluster hierarchy across zoom levels\n for (let z = maxZoom; z >= minZoom; z--) {\n const now = +Date.now();\n\n // create a new set of clusters for the zoom and index them with a KD-tree\n clusters = this._cluster(clusters, z);\n this.trees[z] = new KDBush(clusters, getX, getY, nodeSize, Float32Array);\n\n if (log) console.log('z%d: %d clusters in %dms', z, clusters.length, +Date.now() - now);\n }\n\n if (log) console.timeEnd('total time');\n\n return this;\n }\n\n getClusters(bbox, zoom) {\n let minLng = ((bbox[0] + 180) % 360 + 360) % 360 - 180;\n const minLat = Math.max(-90, Math.min(90, bbox[1]));\n let maxLng = bbox[2] === 180 ? 180 : ((bbox[2] + 180) % 360 + 360) % 360 - 180;\n const maxLat = Math.max(-90, Math.min(90, bbox[3]));\n\n if (bbox[2] - bbox[0] >= 360) {\n minLng = -180;\n maxLng = 180;\n } else if (minLng > maxLng) {\n const easternHem = this.getClusters([minLng, minLat, 180, maxLat], zoom);\n const westernHem = this.getClusters([-180, minLat, maxLng, maxLat], zoom);\n return easternHem.concat(westernHem);\n }\n\n const tree = this.trees[this._limitZoom(zoom)];\n const ids = tree.range(lngX(minLng), latY(maxLat), lngX(maxLng), latY(minLat));\n const clusters = [];\n for (const id of ids) {\n const c = tree.points[id];\n clusters.push(c.numPoints ? getClusterJSON(c) : this.points[c.index]);\n }\n return clusters;\n }\n\n getChildren(clusterId) {\n const originId = this._getOriginId(clusterId);\n const originZoom = this._getOriginZoom(clusterId);\n const errorMsg = 'No cluster with the specified id.';\n\n const index = this.trees[originZoom];\n if (!index) throw new Error(errorMsg);\n\n const origin = index.points[originId];\n if (!origin) throw new Error(errorMsg);\n\n const r = this.options.radius / (this.options.extent * Math.pow(2, originZoom - 1));\n const ids = index.within(origin.x, origin.y, r);\n const children = [];\n for (const id of ids) {\n const c = index.points[id];\n if (c.parentId === clusterId) {\n children.push(c.numPoints ? getClusterJSON(c) : this.points[c.index]);\n }\n }\n\n if (children.length === 0) throw new Error(errorMsg);\n\n return children;\n }\n\n getLeaves(clusterId, limit, offset) {\n limit = limit || 10;\n offset = offset || 0;\n\n const leaves = [];\n this._appendLeaves(leaves, clusterId, limit, offset, 0);\n\n return leaves;\n }\n\n getTile(z, x, y) {\n const tree = this.trees[this._limitZoom(z)];\n const z2 = Math.pow(2, z);\n const {extent, radius} = this.options;\n const p = radius / extent;\n const top = (y - p) / z2;\n const bottom = (y + 1 + p) / z2;\n\n const tile = {\n features: []\n };\n\n this._addTileFeatures(\n tree.range((x - p) / z2, top, (x + 1 + p) / z2, bottom),\n tree.points, x, y, z2, tile);\n\n if (x === 0) {\n this._addTileFeatures(\n tree.range(1 - p / z2, top, 1, bottom),\n tree.points, z2, y, z2, tile);\n }\n if (x === z2 - 1) {\n this._addTileFeatures(\n tree.range(0, top, p / z2, bottom),\n tree.points, -1, y, z2, tile);\n }\n\n return tile.features.length ? tile : null;\n }\n\n getClusterExpansionZoom(clusterId) {\n let expansionZoom = this._getOriginZoom(clusterId) - 1;\n while (expansionZoom <= this.options.maxZoom) {\n const children = this.getChildren(clusterId);\n expansionZoom++;\n if (children.length !== 1) break;\n clusterId = children[0].properties.cluster_id;\n }\n return expansionZoom;\n }\n\n _appendLeaves(result, clusterId, limit, offset, skipped) {\n const children = this.getChildren(clusterId);\n\n for (const child of children) {\n const props = child.properties;\n\n if (props && props.cluster) {\n if (skipped + props.point_count <= offset) {\n // skip the whole cluster\n skipped += props.point_count;\n } else {\n // enter the cluster\n skipped = this._appendLeaves(result, props.cluster_id, limit, offset, skipped);\n // exit the cluster\n }\n } else if (skipped < offset) {\n // skip a single point\n skipped++;\n } else {\n // add a single point\n result.push(child);\n }\n if (result.length === limit) break;\n }\n\n return skipped;\n }\n\n _addTileFeatures(ids, points, x, y, z2, tile) {\n for (const i of ids) {\n const c = points[i];\n const isCluster = c.numPoints;\n const f = {\n type: 1,\n geometry: [[\n Math.round(this.options.extent * (c.x * z2 - x)),\n Math.round(this.options.extent * (c.y * z2 - y))\n ]],\n tags: isCluster ? getClusterProperties(c) : this.points[c.index].properties\n };\n\n // assign id\n let id;\n if (isCluster) {\n id = c.id;\n } else if (this.options.generateId) {\n // optionally generate id\n id = c.index;\n } else if (this.points[c.index].id) {\n // keep id if already assigned\n id = this.points[c.index].id;\n }\n\n if (id !== undefined) f.id = id;\n\n tile.features.push(f);\n }\n }\n\n _limitZoom(z) {\n return Math.max(this.options.minZoom, Math.min(+z, this.options.maxZoom + 1));\n }\n\n _cluster(points, zoom) {\n const clusters = [];\n const {radius, extent, reduce, minPoints} = this.options;\n const r = radius / (extent * Math.pow(2, zoom));\n\n // loop through each point\n for (let i = 0; i < points.length; i++) {\n const p = points[i];\n // if we've already visited the point at this zoom level, skip it\n if (p.zoom <= zoom) continue;\n p.zoom = zoom;\n\n // find all nearby points\n const tree = this.trees[zoom + 1];\n const neighborIds = tree.within(p.x, p.y, r);\n\n const numPointsOrigin = p.numPoints || 1;\n let numPoints = numPointsOrigin;\n\n // count the number of points in a potential cluster\n for (const neighborId of neighborIds) {\n const b = tree.points[neighborId];\n // filter out neighbors that are already processed\n if (b.zoom > zoom) numPoints += b.numPoints || 1;\n }\n\n if (numPoints >= minPoints) { // enough points to form a cluster\n let wx = p.x * numPointsOrigin;\n let wy = p.y * numPointsOrigin;\n\n let clusterProperties = reduce && numPointsOrigin > 1 ? this._map(p, true) : null;\n\n // encode both zoom and point index on which the cluster originated -- offset by total length of features\n const id = (i << 5) + (zoom + 1) + this.points.length;\n\n for (const neighborId of neighborIds) {\n const b = tree.points[neighborId];\n\n if (b.zoom <= zoom) continue;\n b.zoom = zoom; // save the zoom (so it doesn't get processed twice)\n\n const numPoints2 = b.numPoints || 1;\n wx += b.x * numPoints2; // accumulate coordinates for calculating weighted center\n wy += b.y * numPoints2;\n\n b.parentId = id;\n\n if (reduce) {\n if (!clusterProperties) clusterProperties = this._map(p, true);\n reduce(clusterProperties, this._map(b));\n }\n }\n\n p.parentId = id;\n clusters.push(createCluster(wx / numPoints, wy / numPoints, id, numPoints, clusterProperties));\n\n } else { // left points as unclustered\n clusters.push(p);\n\n if (numPoints > 1) {\n for (const neighborId of neighborIds) {\n const b = tree.points[neighborId];\n if (b.zoom <= zoom) continue;\n b.zoom = zoom;\n clusters.push(b);\n }\n }\n }\n }\n\n return clusters;\n }\n\n // get index of the point from which the cluster originated\n _getOriginId(clusterId) {\n return (clusterId - this.points.length) >> 5;\n }\n\n // get zoom of the point from which the cluster originated\n _getOriginZoom(clusterId) {\n return (clusterId - this.points.length) % 32;\n }\n\n _map(point, clone) {\n if (point.numPoints) {\n return clone ? extend({}, point.properties) : point.properties;\n }\n const original = this.points[point.index].properties;\n const result = this.options.map(original);\n return clone && result === original ? extend({}, result) : result;\n }\n}\n\nfunction createCluster(x, y, id, numPoints, properties) {\n return {\n x, // weighted cluster center\n y,\n zoom: Infinity, // the last zoom the cluster was processed at\n id, // encodes index of the first child of the cluster and its zoom level\n parentId: -1, // parent cluster id\n numPoints,\n properties\n };\n}\n\nfunction createPointCluster(p, id) {\n const [x, y] = p.geometry.coordinates;\n return {\n x: lngX(x), // projected point coordinates\n y: latY(y),\n zoom: Infinity, // the last zoom the point was processed at\n index: id, // index of the source feature in the original input array,\n parentId: -1 // parent cluster id\n };\n}\n\nfunction getClusterJSON(cluster) {\n return {\n type: 'Feature',\n id: cluster.id,\n properties: getClusterProperties(cluster),\n geometry: {\n type: 'Point',\n coordinates: [xLng(cluster.x), yLat(cluster.y)]\n }\n };\n}\n\nfunction getClusterProperties(cluster) {\n const count = cluster.numPoints;\n const abbrev =\n count >= 10000 ? `${Math.round(count / 1000) }k` :\n count >= 1000 ? `${Math.round(count / 100) / 10 }k` : count;\n return extend(extend({}, cluster.properties), {\n cluster: true,\n cluster_id: cluster.id,\n point_count: count,\n point_count_abbreviated: abbrev\n });\n}\n\n// longitude/latitude to spherical mercator in [0..1] range\nfunction lngX(lng) {\n return lng / 360 + 0.5;\n}\nfunction latY(lat) {\n const sin = Math.sin(lat * Math.PI / 180);\n const y = (0.5 - 0.25 * Math.log((1 + sin) / (1 - sin)) / Math.PI);\n return y < 0 ? 0 : y > 1 ? 1 : y;\n}\n\n// spherical mercator to longitude/latitude\nfunction xLng(x) {\n return (x - 0.5) * 360;\n}\nfunction yLat(y) {\n const y2 = (180 - y * 360) * Math.PI / 180;\n return 360 * Math.atan(Math.exp(y2)) / Math.PI - 90;\n}\n\nfunction extend(dest, src) {\n for (const id in src) dest[id] = src[id];\n return dest;\n}\n\nfunction getX(p) {\n return p.x;\n}\nfunction getY(p) {\n return p.y;\n}\n", "\n// calculate simplification data using optimized Douglas-Peucker algorithm\n\nexport default function simplify(coords, first, last, sqTolerance) {\n var maxSqDist = sqTolerance;\n var mid = (last - first) >> 1;\n var minPosToMid = last - first;\n var index;\n\n var ax = coords[first];\n var ay = coords[first + 1];\n var bx = coords[last];\n var by = coords[last + 1];\n\n for (var i = first + 3; i < last; i += 3) {\n var d = getSqSegDist(coords[i], coords[i + 1], ax, ay, bx, by);\n\n if (d > maxSqDist) {\n index = i;\n maxSqDist = d;\n\n } else if (d === maxSqDist) {\n // a workaround to ensure we choose a pivot close to the middle of the list,\n // reducing recursion depth, for certain degenerate inputs\n // https://github.com/mapbox/geojson-vt/issues/104\n var posToMid = Math.abs(i - mid);\n if (posToMid < minPosToMid) {\n index = i;\n minPosToMid = posToMid;\n }\n }\n }\n\n if (maxSqDist > sqTolerance) {\n if (index - first > 3) simplify(coords, first, index, sqTolerance);\n coords[index + 2] = maxSqDist;\n if (last - index > 3) simplify(coords, index, last, sqTolerance);\n }\n}\n\n// square distance from a point to a segment\nfunction getSqSegDist(px, py, x, y, bx, by) {\n\n var dx = bx - x;\n var dy = by - y;\n\n if (dx !== 0 || dy !== 0) {\n\n var t = ((px - x) * dx + (py - y) * dy) / (dx * dx + dy * dy);\n\n if (t > 1) {\n x = bx;\n y = by;\n\n } else if (t > 0) {\n x += dx * t;\n y += dy * t;\n }\n }\n\n dx = px - x;\n dy = py - y;\n\n return dx * dx + dy * dy;\n}\n", "\nexport default function createFeature(id, type, geom, tags) {\n var feature = {\n id: typeof id === 'undefined' ? null : id,\n type: type,\n geometry: geom,\n tags: tags,\n minX: Infinity,\n minY: Infinity,\n maxX: -Infinity,\n maxY: -Infinity\n };\n calcBBox(feature);\n return feature;\n}\n\nfunction calcBBox(feature) {\n var geom = feature.geometry;\n var type = feature.type;\n\n if (type === 'Point' || type === 'MultiPoint' || type === 'LineString') {\n calcLineBBox(feature, geom);\n\n } else if (type === 'Polygon' || type === 'MultiLineString') {\n for (var i = 0; i < geom.length; i++) {\n calcLineBBox(feature, geom[i]);\n }\n\n } else if (type === 'MultiPolygon') {\n for (i = 0; i < geom.length; i++) {\n for (var j = 0; j < geom[i].length; j++) {\n calcLineBBox(feature, geom[i][j]);\n }\n }\n }\n}\n\nfunction calcLineBBox(feature, geom) {\n for (var i = 0; i < geom.length; i += 3) {\n feature.minX = Math.min(feature.minX, geom[i]);\n feature.minY = Math.min(feature.minY, geom[i + 1]);\n feature.maxX = Math.max(feature.maxX, geom[i]);\n feature.maxY = Math.max(feature.maxY, geom[i + 1]);\n }\n}\n", "\nimport simplify from './simplify';\nimport createFeature from './feature';\n\n// converts GeoJSON feature into an intermediate projected JSON vector format with simplification data\n\nexport default function convert(data, options) {\n var features = [];\n if (data.type === 'FeatureCollection') {\n for (var i = 0; i < data.features.length; i++) {\n convertFeature(features, data.features[i], options, i);\n }\n\n } else if (data.type === 'Feature') {\n convertFeature(features, data, options);\n\n } else {\n // single geometry or a geometry collection\n convertFeature(features, {geometry: data}, options);\n }\n\n return features;\n}\n\nfunction convertFeature(features, geojson, options, index) {\n if (!geojson.geometry) return;\n\n var coords = geojson.geometry.coordinates;\n var type = geojson.geometry.type;\n var tolerance = Math.pow(options.tolerance / ((1 << options.maxZoom) * options.extent), 2);\n var geometry = [];\n var id = geojson.id;\n if (options.promoteId) {\n id = geojson.properties[options.promoteId];\n } else if (options.generateId) {\n id = index || 0;\n }\n if (type === 'Point') {\n convertPoint(coords, geometry);\n\n } else if (type === 'MultiPoint') {\n for (var i = 0; i < coords.length; i++) {\n convertPoint(coords[i], geometry);\n }\n\n } else if (type === 'LineString') {\n convertLine(coords, geometry, tolerance, false);\n\n } else if (type === 'MultiLineString') {\n if (options.lineMetrics) {\n // explode into linestrings to be able to track metrics\n for (i = 0; i < coords.length; i++) {\n geometry = [];\n convertLine(coords[i], geometry, tolerance, false);\n features.push(createFeature(id, 'LineString', geometry, geojson.properties));\n }\n return;\n } else {\n convertLines(coords, geometry, tolerance, false);\n }\n\n } else if (type === 'Polygon') {\n convertLines(coords, geometry, tolerance, true);\n\n } else if (type === 'MultiPolygon') {\n for (i = 0; i < coords.length; i++) {\n var polygon = [];\n convertLines(coords[i], polygon, tolerance, true);\n geometry.push(polygon);\n }\n } else if (type === 'GeometryCollection') {\n for (i = 0; i < geojson.geometry.geometries.length; i++) {\n convertFeature(features, {\n id: id,\n geometry: geojson.geometry.geometries[i],\n properties: geojson.properties\n }, options, index);\n }\n return;\n } else {\n throw new Error('Input data is not a valid GeoJSON object.');\n }\n\n features.push(createFeature(id, type, geometry, geojson.properties));\n}\n\nfunction convertPoint(coords, out) {\n out.push(projectX(coords[0]));\n out.push(projectY(coords[1]));\n out.push(0);\n}\n\nfunction convertLine(ring, out, tolerance, isPolygon) {\n var x0, y0;\n var size = 0;\n\n for (var j = 0; j < ring.length; j++) {\n var x = projectX(ring[j][0]);\n var y = projectY(ring[j][1]);\n\n out.push(x);\n out.push(y);\n out.push(0);\n\n if (j > 0) {\n if (isPolygon) {\n size += (x0 * y - x * y0) / 2; // area\n } else {\n size += Math.sqrt(Math.pow(x - x0, 2) + Math.pow(y - y0, 2)); // length\n }\n }\n x0 = x;\n y0 = y;\n }\n\n var last = out.length - 3;\n out[2] = 1;\n simplify(out, 0, last, tolerance);\n out[last + 2] = 1;\n\n out.size = Math.abs(size);\n out.start = 0;\n out.end = out.size;\n}\n\nfunction convertLines(rings, out, tolerance, isPolygon) {\n for (var i = 0; i < rings.length; i++) {\n var geom = [];\n convertLine(rings[i], geom, tolerance, isPolygon);\n out.push(geom);\n }\n}\n\nfunction projectX(x) {\n return x / 360 + 0.5;\n}\n\nfunction projectY(y) {\n var sin = Math.sin(y * Math.PI / 180);\n var y2 = 0.5 - 0.25 * Math.log((1 + sin) / (1 - sin)) / Math.PI;\n return y2 < 0 ? 0 : y2 > 1 ? 1 : y2;\n}\n", "\nimport createFeature from './feature';\n\n/* clip features between two axis-parallel lines:\n * | |\n * ___|___ | /\n * / | \\____|____/\n * | |\n */\n\nexport default function clip(features, scale, k1, k2, axis, minAll, maxAll, options) {\n\n k1 /= scale;\n k2 /= scale;\n\n if (minAll >= k1 && maxAll < k2) return features; // trivial accept\n else if (maxAll < k1 || minAll >= k2) return null; // trivial reject\n\n var clipped = [];\n\n for (var i = 0; i < features.length; i++) {\n\n var feature = features[i];\n var geometry = feature.geometry;\n var type = feature.type;\n\n var min = axis === 0 ? feature.minX : feature.minY;\n var max = axis === 0 ? feature.maxX : feature.maxY;\n\n if (min >= k1 && max < k2) { // trivial accept\n clipped.push(feature);\n continue;\n } else if (max < k1 || min >= k2) { // trivial reject\n continue;\n }\n\n var newGeometry = [];\n\n if (type === 'Point' || type === 'MultiPoint') {\n clipPoints(geometry, newGeometry, k1, k2, axis);\n\n } else if (type === 'LineString') {\n clipLine(geometry, newGeometry, k1, k2, axis, false, options.lineMetrics);\n\n } else if (type === 'MultiLineString') {\n clipLines(geometry, newGeometry, k1, k2, axis, false);\n\n } else if (type === 'Polygon') {\n clipLines(geometry, newGeometry, k1, k2, axis, true);\n\n } else if (type === 'MultiPolygon') {\n for (var j = 0; j < geometry.length; j++) {\n var polygon = [];\n clipLines(geometry[j], polygon, k1, k2, axis, true);\n if (polygon.length) {\n newGeometry.push(polygon);\n }\n }\n }\n\n if (newGeometry.length) {\n if (options.lineMetrics && type === 'LineString') {\n for (j = 0; j < newGeometry.length; j++) {\n clipped.push(createFeature(feature.id, type, newGeometry[j], feature.tags));\n }\n continue;\n }\n\n if (type === 'LineString' || type === 'MultiLineString') {\n if (newGeometry.length === 1) {\n type = 'LineString';\n newGeometry = newGeometry[0];\n } else {\n type = 'MultiLineString';\n }\n }\n if (type === 'Point' || type === 'MultiPoint') {\n type = newGeometry.length === 3 ? 'Point' : 'MultiPoint';\n }\n\n clipped.push(createFeature(feature.id, type, newGeometry, feature.tags));\n }\n }\n\n return clipped.length ? clipped : null;\n}\n\nfunction clipPoints(geom, newGeom, k1, k2, axis) {\n for (var i = 0; i < geom.length; i += 3) {\n var a = geom[i + axis];\n\n if (a >= k1 && a <= k2) {\n newGeom.push(geom[i]);\n newGeom.push(geom[i + 1]);\n newGeom.push(geom[i + 2]);\n }\n }\n}\n\nfunction clipLine(geom, newGeom, k1, k2, axis, isPolygon, trackMetrics) {\n\n var slice = newSlice(geom);\n var intersect = axis === 0 ? intersectX : intersectY;\n var len = geom.start;\n var segLen, t;\n\n for (var i = 0; i < geom.length - 3; i += 3) {\n var ax = geom[i];\n var ay = geom[i + 1];\n var az = geom[i + 2];\n var bx = geom[i + 3];\n var by = geom[i + 4];\n var a = axis === 0 ? ax : ay;\n var b = axis === 0 ? bx : by;\n var exited = false;\n\n if (trackMetrics) segLen = Math.sqrt(Math.pow(ax - bx, 2) + Math.pow(ay - by, 2));\n\n if (a < k1) {\n // ---|--> | (line enters the clip region from the left)\n if (b > k1) {\n t = intersect(slice, ax, ay, bx, by, k1);\n if (trackMetrics) slice.start = len + segLen * t;\n }\n } else if (a > k2) {\n // | <--|--- (line enters the clip region from the right)\n if (b < k2) {\n t = intersect(slice, ax, ay, bx, by, k2);\n if (trackMetrics) slice.start = len + segLen * t;\n }\n } else {\n addPoint(slice, ax, ay, az);\n }\n if (b < k1 && a >= k1) {\n // <--|--- | or <--|-----|--- (line exits the clip region on the left)\n t = intersect(slice, ax, ay, bx, by, k1);\n exited = true;\n }\n if (b > k2 && a <= k2) {\n // | ---|--> or ---|-----|--> (line exits the clip region on the right)\n t = intersect(slice, ax, ay, bx, by, k2);\n exited = true;\n }\n\n if (!isPolygon && exited) {\n if (trackMetrics) slice.end = len + segLen * t;\n newGeom.push(slice);\n slice = newSlice(geom);\n }\n\n if (trackMetrics) len += segLen;\n }\n\n // add the last point\n var last = geom.length - 3;\n ax = geom[last];\n ay = geom[last + 1];\n az = geom[last + 2];\n a = axis === 0 ? ax : ay;\n if (a >= k1 && a <= k2) addPoint(slice, ax, ay, az);\n\n // close the polygon if its endpoints are not the same after clipping\n last = slice.length - 3;\n if (isPolygon && last >= 3 && (slice[last] !== slice[0] || slice[last + 1] !== slice[1])) {\n addPoint(slice, slice[0], slice[1], slice[2]);\n }\n\n // add the final slice\n if (slice.length) {\n newGeom.push(slice);\n }\n}\n\nfunction newSlice(line) {\n var slice = [];\n slice.size = line.size;\n slice.start = line.start;\n slice.end = line.end;\n return slice;\n}\n\nfunction clipLines(geom, newGeom, k1, k2, axis, isPolygon) {\n for (var i = 0; i < geom.length; i++) {\n clipLine(geom[i], newGeom, k1, k2, axis, isPolygon, false);\n }\n}\n\nfunction addPoint(out, x, y, z) {\n out.push(x);\n out.push(y);\n out.push(z);\n}\n\nfunction intersectX(out, ax, ay, bx, by, x) {\n var t = (x - ax) / (bx - ax);\n out.push(x);\n out.push(ay + (by - ay) * t);\n out.push(1);\n return t;\n}\n\nfunction intersectY(out, ax, ay, bx, by, y) {\n var t = (y - ay) / (by - ay);\n out.push(ax + (bx - ax) * t);\n out.push(y);\n out.push(1);\n return t;\n}\n", "\nimport clip from './clip';\nimport createFeature from './feature';\n\nexport default function wrap(features, options) {\n var buffer = options.buffer / options.extent;\n var merged = features;\n var left = clip(features, 1, -1 - buffer, buffer, 0, -1, 2, options); // left world copy\n var right = clip(features, 1, 1 - buffer, 2 + buffer, 0, -1, 2, options); // right world copy\n\n if (left || right) {\n merged = clip(features, 1, -buffer, 1 + buffer, 0, -1, 2, options) || []; // center world copy\n\n if (left) merged = shiftFeatureCoords(left, 1).concat(merged); // merge left into center\n if (right) merged = merged.concat(shiftFeatureCoords(right, -1)); // merge right into center\n }\n\n return merged;\n}\n\nfunction shiftFeatureCoords(features, offset) {\n var newFeatures = [];\n\n for (var i = 0; i < features.length; i++) {\n var feature = features[i],\n type = feature.type;\n\n var newGeometry;\n\n if (type === 'Point' || type === 'MultiPoint' || type === 'LineString') {\n newGeometry = shiftCoords(feature.geometry, offset);\n\n } else if (type === 'MultiLineString' || type === 'Polygon') {\n newGeometry = [];\n for (var j = 0; j < feature.geometry.length; j++) {\n newGeometry.push(shiftCoords(feature.geometry[j], offset));\n }\n } else if (type === 'MultiPolygon') {\n newGeometry = [];\n for (j = 0; j < feature.geometry.length; j++) {\n var newPolygon = [];\n for (var k = 0; k < feature.geometry[j].length; k++) {\n newPolygon.push(shiftCoords(feature.geometry[j][k], offset));\n }\n newGeometry.push(newPolygon);\n }\n }\n\n newFeatures.push(createFeature(feature.id, type, newGeometry, feature.tags));\n }\n\n return newFeatures;\n}\n\nfunction shiftCoords(points, offset) {\n var newPoints = [];\n newPoints.size = points.size;\n\n if (points.start !== undefined) {\n newPoints.start = points.start;\n newPoints.end = points.end;\n }\n\n for (var i = 0; i < points.length; i += 3) {\n newPoints.push(points[i] + offset, points[i + 1], points[i + 2]);\n }\n return newPoints;\n}\n", "\n// Transforms the coordinates of each feature in the given tile from\n// mercator-projected space into (extent x extent) tile space.\nexport default function transformTile(tile, extent) {\n if (tile.transformed) return tile;\n\n var z2 = 1 << tile.z,\n tx = tile.x,\n ty = tile.y,\n i, j, k;\n\n for (i = 0; i < tile.features.length; i++) {\n var feature = tile.features[i],\n geom = feature.geometry,\n type = feature.type;\n\n feature.geometry = [];\n\n if (type === 1) {\n for (j = 0; j < geom.length; j += 2) {\n feature.geometry.push(transformPoint(geom[j], geom[j + 1], extent, z2, tx, ty));\n }\n } else {\n for (j = 0; j < geom.length; j++) {\n var ring = [];\n for (k = 0; k < geom[j].length; k += 2) {\n ring.push(transformPoint(geom[j][k], geom[j][k + 1], extent, z2, tx, ty));\n }\n feature.geometry.push(ring);\n }\n }\n }\n\n tile.transformed = true;\n\n return tile;\n}\n\nfunction transformPoint(x, y, extent, z2, tx, ty) {\n return [\n Math.round(extent * (x * z2 - tx)),\n Math.round(extent * (y * z2 - ty))];\n}\n", "\nexport default function createTile(features, z, tx, ty, options) {\n var tolerance = z === options.maxZoom ? 0 : options.tolerance / ((1 << z) * options.extent);\n var tile = {\n features: [],\n numPoints: 0,\n numSimplified: 0,\n numFeatures: 0,\n source: null,\n x: tx,\n y: ty,\n z: z,\n transformed: false,\n minX: 2,\n minY: 1,\n maxX: -1,\n maxY: 0\n };\n for (var i = 0; i < features.length; i++) {\n tile.numFeatures++;\n addFeature(tile, features[i], tolerance, options);\n\n var minX = features[i].minX;\n var minY = features[i].minY;\n var maxX = features[i].maxX;\n var maxY = features[i].maxY;\n\n if (minX < tile.minX) tile.minX = minX;\n if (minY < tile.minY) tile.minY = minY;\n if (maxX > tile.maxX) tile.maxX = maxX;\n if (maxY > tile.maxY) tile.maxY = maxY;\n }\n return tile;\n}\n\nfunction addFeature(tile, feature, tolerance, options) {\n\n var geom = feature.geometry,\n type = feature.type,\n simplified = [];\n\n if (type === 'Point' || type === 'MultiPoint') {\n for (var i = 0; i < geom.length; i += 3) {\n simplified.push(geom[i]);\n simplified.push(geom[i + 1]);\n tile.numPoints++;\n tile.numSimplified++;\n }\n\n } else if (type === 'LineString') {\n addLine(simplified, geom, tile, tolerance, false, false);\n\n } else if (type === 'MultiLineString' || type === 'Polygon') {\n for (i = 0; i < geom.length; i++) {\n addLine(simplified, geom[i], tile, tolerance, type === 'Polygon', i === 0);\n }\n\n } else if (type === 'MultiPolygon') {\n\n for (var k = 0; k < geom.length; k++) {\n var polygon = geom[k];\n for (i = 0; i < polygon.length; i++) {\n addLine(simplified, polygon[i], tile, tolerance, true, i === 0);\n }\n }\n }\n\n if (simplified.length) {\n var tags = feature.tags || null;\n if (type === 'LineString' && options.lineMetrics) {\n tags = {};\n for (var key in feature.tags) tags[key] = feature.tags[key];\n tags['mapbox_clip_start'] = geom.start / geom.size;\n tags['mapbox_clip_end'] = geom.end / geom.size;\n }\n var tileFeature = {\n geometry: simplified,\n type: type === 'Polygon' || type === 'MultiPolygon' ? 3 :\n type === 'LineString' || type === 'MultiLineString' ? 2 : 1,\n tags: tags\n };\n if (feature.id !== null) {\n tileFeature.id = feature.id;\n }\n tile.features.push(tileFeature);\n }\n}\n\nfunction addLine(result, geom, tile, tolerance, isPolygon, isOuter) {\n var sqTolerance = tolerance * tolerance;\n\n if (tolerance > 0 && (geom.size < (isPolygon ? sqTolerance : tolerance))) {\n tile.numPoints += geom.length / 3;\n return;\n }\n\n var ring = [];\n\n for (var i = 0; i < geom.length; i += 3) {\n if (tolerance === 0 || geom[i + 2] > sqTolerance) {\n tile.numSimplified++;\n ring.push(geom[i]);\n ring.push(geom[i + 1]);\n }\n tile.numPoints++;\n }\n\n if (isPolygon) rewind(ring, isOuter);\n\n result.push(ring);\n}\n\nfunction rewind(ring, clockwise) {\n var area = 0;\n for (var i = 0, len = ring.length, j = len - 2; i < len; j = i, i += 2) {\n area += (ring[i] - ring[j]) * (ring[i + 1] + ring[j + 1]);\n }\n if (area > 0 === clockwise) {\n for (i = 0, len = ring.length; i < len / 2; i += 2) {\n var x = ring[i];\n var y = ring[i + 1];\n ring[i] = ring[len - 2 - i];\n ring[i + 1] = ring[len - 1 - i];\n ring[len - 2 - i] = x;\n ring[len - 1 - i] = y;\n }\n }\n}\n", "\nimport convert from './convert'; // GeoJSON conversion and preprocessing\nimport clip from './clip'; // stripe clipping algorithm\nimport wrap from './wrap'; // date line processing\nimport transform from './transform'; // coordinate transformation\nimport createTile from './tile'; // final simplified tile generation\n\nexport default function geojsonvt(data, options) {\n return new GeoJSONVT(data, options);\n}\n\nfunction GeoJSONVT(data, options) {\n options = this.options = extend(Object.create(this.options), options);\n\n var debug = options.debug;\n\n if (debug) console.time('preprocess data');\n\n if (options.maxZoom < 0 || options.maxZoom > 24) throw new Error('maxZoom should be in the 0-24 range');\n if (options.promoteId && options.generateId) throw new Error('promoteId and generateId cannot be used together.');\n\n var features = convert(data, options);\n\n this.tiles = {};\n this.tileCoords = [];\n\n if (debug) {\n console.timeEnd('preprocess data');\n console.log('index: maxZoom: %d, maxPoints: %d', options.indexMaxZoom, options.indexMaxPoints);\n console.time('generate tiles');\n this.stats = {};\n this.total = 0;\n }\n\n features = wrap(features, options);\n\n // start slicing from the top tile down\n if (features.length) this.splitTile(features, 0, 0, 0);\n\n if (debug) {\n if (features.length) console.log('features: %d, points: %d', this.tiles[0].numFeatures, this.tiles[0].numPoints);\n console.timeEnd('generate tiles');\n console.log('tiles generated:', this.total, JSON.stringify(this.stats));\n }\n}\n\nGeoJSONVT.prototype.options = {\n maxZoom: 14, // max zoom to preserve detail on\n indexMaxZoom: 5, // max zoom in the tile index\n indexMaxPoints: 100000, // max number of points per tile in the tile index\n tolerance: 3, // simplification tolerance (higher means simpler)\n extent: 4096, // tile extent\n buffer: 64, // tile buffer on each side\n lineMetrics: false, // whether to calculate line metrics\n promoteId: null, // name of a feature property to be promoted to feature.id\n generateId: false, // whether to generate feature ids. Cannot be used with promoteId\n debug: 0 // logging level (0, 1 or 2)\n};\n\nGeoJSONVT.prototype.splitTile = function (features, z, x, y, cz, cx, cy) {\n\n var stack = [features, z, x, y],\n options = this.options,\n debug = options.debug;\n\n // avoid recursion by using a processing queue\n while (stack.length) {\n y = stack.pop();\n x = stack.pop();\n z = stack.pop();\n features = stack.pop();\n\n var z2 = 1 << z,\n id = toID(z, x, y),\n tile = this.tiles[id];\n\n if (!tile) {\n if (debug > 1) console.time('creation');\n\n tile = this.tiles[id] = createTile(features, z, x, y, options);\n this.tileCoords.push({z: z, x: x, y: y});\n\n if (debug) {\n if (debug > 1) {\n console.log('tile z%d-%d-%d (features: %d, points: %d, simplified: %d)',\n z, x, y, tile.numFeatures, tile.numPoints, tile.numSimplified);\n console.timeEnd('creation');\n }\n var key = 'z' + z;\n this.stats[key] = (this.stats[key] || 0) + 1;\n this.total++;\n }\n }\n\n // save reference to original geometry in tile so that we can drill down later if we stop now\n tile.source = features;\n\n // if it's the first-pass tiling\n if (!cz) {\n // stop tiling if we reached max zoom, or if the tile is too simple\n if (z === options.indexMaxZoom || tile.numPoints <= options.indexMaxPoints) continue;\n\n // if a drilldown to a specific tile\n } else {\n // stop tiling if we reached base zoom or our target tile zoom\n if (z === options.maxZoom || z === cz) continue;\n\n // stop tiling if it's not an ancestor of the target tile\n var m = 1 << (cz - z);\n if (x !== Math.floor(cx / m) || y !== Math.floor(cy / m)) continue;\n }\n\n // if we slice further down, no need to keep source geometry\n tile.source = null;\n\n if (features.length === 0) continue;\n\n if (debug > 1) console.time('clipping');\n\n // values we'll use for clipping\n var k1 = 0.5 * options.buffer / options.extent,\n k2 = 0.5 - k1,\n k3 = 0.5 + k1,\n k4 = 1 + k1,\n tl, bl, tr, br, left, right;\n\n tl = bl = tr = br = null;\n\n left = clip(features, z2, x - k1, x + k3, 0, tile.minX, tile.maxX, options);\n right = clip(features, z2, x + k2, x + k4, 0, tile.minX, tile.maxX, options);\n features = null;\n\n if (left) {\n tl = clip(left, z2, y - k1, y + k3, 1, tile.minY, tile.maxY, options);\n bl = clip(left, z2, y + k2, y + k4, 1, tile.minY, tile.maxY, options);\n left = null;\n }\n\n if (right) {\n tr = clip(right, z2, y - k1, y + k3, 1, tile.minY, tile.maxY, options);\n br = clip(right, z2, y + k2, y + k4, 1, tile.minY, tile.maxY, options);\n right = null;\n }\n\n if (debug > 1) console.timeEnd('clipping');\n\n stack.push(tl || [], z + 1, x * 2, y * 2);\n stack.push(bl || [], z + 1, x * 2, y * 2 + 1);\n stack.push(tr || [], z + 1, x * 2 + 1, y * 2);\n stack.push(br || [], z + 1, x * 2 + 1, y * 2 + 1);\n }\n};\n\nGeoJSONVT.prototype.getTile = function (z, x, y) {\n var options = this.options,\n extent = options.extent,\n debug = options.debug;\n\n if (z < 0 || z > 24) return null;\n\n var z2 = 1 << z;\n x = ((x % z2) + z2) % z2; // wrap tile x coordinate\n\n var id = toID(z, x, y);\n if (this.tiles[id]) return transform(this.tiles[id], extent);\n\n if (debug > 1) console.log('drilling down to z%d-%d-%d', z, x, y);\n\n var z0 = z,\n x0 = x,\n y0 = y,\n parent;\n\n while (!parent && z0 > 0) {\n z0--;\n x0 = Math.floor(x0 / 2);\n y0 = Math.floor(y0 / 2);\n parent = this.tiles[toID(z0, x0, y0)];\n }\n\n if (!parent || !parent.source) return null;\n\n // if we found a parent tile containing the original geometry, we can drill down from it\n if (debug > 1) console.log('found parent tile z%d-%d-%d', z0, x0, y0);\n\n if (debug > 1) console.time('drilling down');\n this.splitTile(parent.source, z0, x0, y0, z, x, y);\n if (debug > 1) console.timeEnd('drilling down');\n\n return this.tiles[id] ? transform(this.tiles[id], extent) : null;\n};\n\nfunction toID(z, x, y) {\n return (((1 << z) * y + x) * 32) + z;\n}\n\nfunction extend(dest, src) {\n for (var i in src) dest[i] = src[i];\n return dest;\n}\n", "// @flow\n\nimport {getJSON} from '../util/ajax';\n\nimport {RequestPerformance} from '../util/performance';\nimport rewind from '@mapbox/geojson-rewind';\nimport GeoJSONWrapper from './geojson_wrapper';\nimport vtpbf from 'vt-pbf';\nimport Supercluster from 'supercluster';\nimport geojsonvt from 'geojson-vt';\nimport assert from 'assert';\nimport VectorTileWorkerSource from './vector_tile_worker_source';\nimport {createExpression} from '../style-spec/expression';\n\nimport type {\n WorkerTileParameters,\n WorkerTileCallback,\n} from '../source/worker_source';\n\nimport type Actor from '../util/actor';\nimport type StyleLayerIndex from '../style/style_layer_index';\n\nimport type {LoadVectorDataCallback} from './vector_tile_worker_source';\nimport type {RequestParameters, ResponseCallback} from '../util/ajax';\nimport type {Callback} from '../types/callback';\nimport type {GeoJSONFeature} from '@mapbox/geojson-types';\n\nexport type LoadGeoJSONParameters = {\n request?: RequestParameters,\n data?: string,\n source: string,\n cluster: boolean,\n superclusterOptions?: Object,\n geojsonVtOptions?: Object,\n clusterProperties?: Object,\n filter?: Array\n};\n\nexport type LoadGeoJSON = (params: LoadGeoJSONParameters, callback: ResponseCallback) => void;\n\nexport interface GeoJSONIndex {\n getTile(z: number, x: number, y: number): Object;\n\n // supercluster methods\n getClusterExpansionZoom(clusterId: number): number;\n getChildren(clusterId: number): Array;\n getLeaves(clusterId: number, limit: number, offset: number): Array;\n}\n\nfunction loadGeoJSONTile(params: WorkerTileParameters, callback: LoadVectorDataCallback) {\n const canonical = params.tileID.canonical;\n\n if (!this._geoJSONIndex) {\n return callback(null, null); // we couldn't load the file\n }\n\n const geoJSONTile = this._geoJSONIndex.getTile(canonical.z, canonical.x, canonical.y);\n if (!geoJSONTile) {\n return callback(null, null); // nothing in the given tile\n }\n\n const geojsonWrapper = new GeoJSONWrapper(geoJSONTile.features);\n\n // Encode the geojson-vt tile into binary vector tile form. This\n // is a convenience that allows `FeatureIndex` to operate the same way\n // across `VectorTileSource` and `GeoJSONSource` data.\n let pbf = vtpbf(geojsonWrapper);\n if (pbf.byteOffset !== 0 || pbf.byteLength !== pbf.buffer.byteLength) {\n // Compatibility with node Buffer (https://github.com/mapbox/pbf/issues/35)\n pbf = new Uint8Array(pbf);\n }\n\n callback(null, {\n vectorTile: geojsonWrapper,\n rawData: pbf.buffer\n });\n}\n\nexport type SourceState =\n | 'Idle' // Source empty or data loaded\n | 'Coalescing' // Data finished loading, but discard 'loadData' messages until receiving 'coalesced'\n | 'NeedsLoadData'; // 'loadData' received while coalescing, trigger one more 'loadData' on receiving 'coalesced'\n\n/**\n * The {@link WorkerSource} implementation that supports {@link GeoJSONSource}.\n * This class is designed to be easily reused to support custom source types\n * for data formats that can be parsed/converted into an in-memory GeoJSON\n * representation. To do so, create it with\n * `new GeoJSONWorkerSource(actor, layerIndex, customLoadGeoJSONFunction)`.\n * For a full example, see [mapbox-gl-topojson](https://github.com/developmentseed/mapbox-gl-topojson).\n *\n * @private\n */\nclass GeoJSONWorkerSource extends VectorTileWorkerSource {\n loadGeoJSON: LoadGeoJSON;\n _state: SourceState;\n _pendingCallback: Callback<{\n resourceTiming?: {[_: string]: Array},\n abandoned?: boolean }>;\n _pendingLoadDataParams: LoadGeoJSONParameters;\n _geoJSONIndex: GeoJSONIndex\n\n /**\n * @param [loadGeoJSON] Optional method for custom loading/parsing of\n * GeoJSON based on parameters passed from the main-thread Source.\n * See {@link GeoJSONWorkerSource#loadGeoJSON}.\n * @private\n */\n constructor(actor: Actor, layerIndex: StyleLayerIndex, availableImages: Array, loadGeoJSON: ?LoadGeoJSON) {\n super(actor, layerIndex, availableImages, loadGeoJSONTile);\n if (loadGeoJSON) {\n this.loadGeoJSON = loadGeoJSON;\n }\n }\n\n /**\n * Fetches (if appropriate), parses, and index geojson data into tiles. This\n * preparatory method must be called before {@link GeoJSONWorkerSource#loadTile}\n * can correctly serve up tiles.\n *\n * Defers to {@link GeoJSONWorkerSource#loadGeoJSON} for the fetching/parsing,\n * expecting `callback(error, data)` to be called with either an error or a\n * parsed GeoJSON object.\n *\n * When `loadData` requests come in faster than they can be processed,\n * they are coalesced into a single request using the latest data.\n * See {@link GeoJSONWorkerSource#coalesce}\n *\n * @param params\n * @param callback\n * @private\n */\n loadData(params: LoadGeoJSONParameters, callback: Callback<{\n resourceTiming?: {[_: string]: Array},\n abandoned?: boolean }>) {\n if (this._pendingCallback) {\n // Tell the foreground the previous call has been abandoned\n this._pendingCallback(null, {abandoned: true});\n }\n this._pendingCallback = callback;\n this._pendingLoadDataParams = params;\n\n if (this._state &&\n this._state !== 'Idle') {\n this._state = 'NeedsLoadData';\n } else {\n this._state = 'Coalescing';\n this._loadData();\n }\n }\n\n /**\n * Internal implementation: called directly by `loadData`\n * or by `coalesce` using stored parameters.\n */\n _loadData() {\n if (!this._pendingCallback || !this._pendingLoadDataParams) {\n assert(false);\n return;\n }\n const callback = this._pendingCallback;\n const params = this._pendingLoadDataParams;\n delete this._pendingCallback;\n delete this._pendingLoadDataParams;\n\n const perf = (params && params.request && params.request.collectResourceTiming) ?\n new RequestPerformance(params.request) : false;\n\n this.loadGeoJSON(params, (err: ?Error, data: ?Object) => {\n if (err || !data) {\n return callback(err);\n } else if (typeof data !== 'object') {\n return callback(new Error(`Input data given to '${params.source}' is not a valid GeoJSON object.`));\n } else {\n rewind(data, true);\n\n try {\n if (params.filter) {\n const compiled = createExpression(params.filter, {type: 'boolean', 'property-type': 'data-driven', overridable: false, transition: false});\n if (compiled.result === 'error')\n throw new Error(compiled.value.map(err => `${err.key}: ${err.message}`).join(', '));\n\n const features = data.features.filter(feature => compiled.value.evaluate({zoom: 0}, feature));\n data = {type: 'FeatureCollection', features};\n }\n\n this._geoJSONIndex = params.cluster ?\n new Supercluster(getSuperclusterOptions(params)).load(data.features) :\n geojsonvt(data, params.geojsonVtOptions);\n } catch (err) {\n return callback(err);\n }\n\n this.loaded = {};\n\n const result = {};\n if (perf) {\n const resourceTimingData = perf.finish();\n // it's necessary to eval the result of getEntriesByName() here via parse/stringify\n // late evaluation in the main thread causes TypeError: illegal invocation\n if (resourceTimingData) {\n result.resourceTiming = {};\n result.resourceTiming[params.source] = JSON.parse(JSON.stringify(resourceTimingData));\n }\n }\n callback(null, result);\n }\n });\n }\n\n /**\n * While processing `loadData`, we coalesce all further\n * `loadData` messages into a single call to _loadData\n * that will happen once we've finished processing the\n * first message. {@link GeoJSONSource#_updateWorkerData}\n * is responsible for sending us the `coalesce` message\n * at the time it receives a response from `loadData`\n *\n * State: Idle\n * ↑ |\n * 'coalesce' 'loadData'\n * | (triggers load)\n * | ↓\n * State: Coalescing\n * ↑ |\n * (triggers load) |\n * 'coalesce' 'loadData'\n * | ↓\n * State: NeedsLoadData\n */\n coalesce() {\n if (this._state === 'Coalescing') {\n this._state = 'Idle';\n } else if (this._state === 'NeedsLoadData') {\n this._state = 'Coalescing';\n this._loadData();\n }\n }\n\n /**\n * Implements {@link WorkerSource#reloadTile}.\n *\n * If the tile is loaded, uses the implementation in VectorTileWorkerSource.\n * Otherwise, such as after a setData() call, we load the tile fresh.\n *\n * @param params\n * @param params.uid The UID for this tile.\n * @private\n */\n reloadTile(params: WorkerTileParameters, callback: WorkerTileCallback) {\n const loaded = this.loaded,\n uid = params.uid;\n\n if (loaded && loaded[uid]) {\n return super.reloadTile(params, callback);\n } else {\n return this.loadTile(params, callback);\n }\n }\n\n /**\n * Fetch and parse GeoJSON according to the given params. Calls `callback`\n * with `(err, data)`, where `data` is a parsed GeoJSON object.\n *\n * GeoJSON is loaded and parsed from `params.url` if it exists, or else\n * expected as a literal (string or object) `params.data`.\n *\n * @param params\n * @param [params.url] A URL to the remote GeoJSON data.\n * @param [params.data] Literal GeoJSON data. Must be provided if `params.url` is not.\n * @private\n */\n loadGeoJSON(params: LoadGeoJSONParameters, callback: ResponseCallback) {\n // Because of same origin issues, urls must either include an explicit\n // origin or absolute path.\n // ie: /foo/bar.json or http://example.com/bar.json\n // but not ../foo/bar.json\n if (params.request) {\n getJSON(params.request, callback);\n } else if (typeof params.data === 'string') {\n try {\n return callback(null, JSON.parse(params.data));\n } catch (e) {\n return callback(new Error(`Input data given to '${params.source}' is not a valid GeoJSON object.`));\n }\n } else {\n return callback(new Error(`Input data given to '${params.source}' is not a valid GeoJSON object.`));\n }\n }\n\n removeSource(params: {source: string}, callback: Callback) {\n if (this._pendingCallback) {\n // Don't leak callbacks\n this._pendingCallback(null, {abandoned: true});\n }\n callback();\n }\n\n getClusterExpansionZoom(params: {clusterId: number}, callback: Callback) {\n try {\n callback(null, this._geoJSONIndex.getClusterExpansionZoom(params.clusterId));\n } catch (e) {\n callback(e);\n }\n }\n\n getClusterChildren(params: {clusterId: number}, callback: Callback>) {\n try {\n callback(null, this._geoJSONIndex.getChildren(params.clusterId));\n } catch (e) {\n callback(e);\n }\n }\n\n getClusterLeaves(params: {clusterId: number, limit: number, offset: number}, callback: Callback>) {\n try {\n callback(null, this._geoJSONIndex.getLeaves(params.clusterId, params.limit, params.offset));\n } catch (e) {\n callback(e);\n }\n }\n}\n\nfunction getSuperclusterOptions({superclusterOptions, clusterProperties}) {\n if (!clusterProperties || !superclusterOptions) return superclusterOptions;\n\n const mapExpressions = {};\n const reduceExpressions = {};\n const globals = {accumulated: null, zoom: 0};\n const feature = {properties: null};\n const propertyNames = Object.keys(clusterProperties);\n\n for (const key of propertyNames) {\n const [operator, mapExpression] = clusterProperties[key];\n\n const mapExpressionParsed = createExpression(mapExpression);\n const reduceExpressionParsed = createExpression(\n typeof operator === 'string' ? [operator, ['accumulated'], ['get', key]] : operator);\n\n assert(mapExpressionParsed.result === 'success');\n assert(reduceExpressionParsed.result === 'success');\n\n mapExpressions[key] = mapExpressionParsed.value;\n reduceExpressions[key] = reduceExpressionParsed.value;\n }\n\n superclusterOptions.map = (pointProperties) => {\n feature.properties = pointProperties;\n const properties = {};\n for (const key of propertyNames) {\n properties[key] = mapExpressions[key].evaluate(globals, feature);\n }\n return properties;\n };\n superclusterOptions.reduce = (accumulated, clusterProperties) => {\n feature.properties = clusterProperties;\n for (const key of propertyNames) {\n globals.accumulated = accumulated[key];\n accumulated[key] = reduceExpressions[key].evaluate(globals, feature);\n }\n };\n\n return superclusterOptions;\n}\n\nexport default GeoJSONWorkerSource;\n", "// @flow\n\nimport Actor from '../util/actor';\n\nimport StyleLayerIndex from '../style/style_layer_index';\nimport VectorTileWorkerSource from './vector_tile_worker_source';\nimport RasterDEMTileWorkerSource from './raster_dem_tile_worker_source';\nimport GeoJSONWorkerSource from './geojson_worker_source';\nimport assert from 'assert';\nimport {plugin as globalRTLTextPlugin} from './rtl_text_plugin';\nimport {enforceCacheSizeLimit} from '../util/tile_request_cache';\n\nimport type {\n WorkerSource,\n WorkerTileParameters,\n WorkerDEMTileParameters,\n WorkerTileCallback,\n WorkerDEMTileCallback,\n TileParameters\n} from '../source/worker_source';\n\nimport type {WorkerGlobalScopeInterface} from '../util/web_worker';\nimport type {Callback} from '../types/callback';\nimport type {LayerSpecification} from '../style-spec/types';\nimport type {PluginState} from './rtl_text_plugin';\n\n/**\n * @private\n */\nexport default class Worker {\n self: WorkerGlobalScopeInterface;\n actor: Actor;\n layerIndexes: {[_: string]: StyleLayerIndex };\n availableImages: {[_: string]: Array };\n workerSourceTypes: {[_: string]: Class };\n workerSources: {[_: string]: {[_: string]: {[_: string]: WorkerSource } } };\n demWorkerSources: {[_: string]: {[_: string]: RasterDEMTileWorkerSource } };\n referrer: ?string;\n\n constructor(self: WorkerGlobalScopeInterface) {\n this.self = self;\n this.actor = new Actor(self, this);\n\n this.layerIndexes = {};\n this.availableImages = {};\n\n this.workerSourceTypes = {\n vector: VectorTileWorkerSource,\n geojson: GeoJSONWorkerSource\n };\n\n // [mapId][sourceType][sourceName] => worker source instance\n this.workerSources = {};\n this.demWorkerSources = {};\n\n this.self.registerWorkerSource = (name: string, WorkerSource: Class) => {\n if (this.workerSourceTypes[name]) {\n throw new Error(`Worker source with name \"${name}\" already registered.`);\n }\n this.workerSourceTypes[name] = WorkerSource;\n };\n\n // This is invoked by the RTL text plugin when the download via the `importScripts` call has finished, and the code has been parsed.\n this.self.registerRTLTextPlugin = (rtlTextPlugin: {applyArabicShaping: Function, processBidirectionalText: Function, processStyledBidirectionalText?: Function}) => {\n if (globalRTLTextPlugin.isParsed()) {\n throw new Error('RTL text plugin already registered.');\n }\n globalRTLTextPlugin['applyArabicShaping'] = rtlTextPlugin.applyArabicShaping;\n globalRTLTextPlugin['processBidirectionalText'] = rtlTextPlugin.processBidirectionalText;\n globalRTLTextPlugin['processStyledBidirectionalText'] = rtlTextPlugin.processStyledBidirectionalText;\n };\n }\n\n setReferrer(mapID: string, referrer: string) {\n this.referrer = referrer;\n }\n\n setImages(mapId: string, images: Array, callback: WorkerTileCallback) {\n this.availableImages[mapId] = images;\n for (const workerSource in this.workerSources[mapId]) {\n const ws = this.workerSources[mapId][workerSource];\n for (const source in ws) {\n ws[source].availableImages = images;\n }\n }\n callback();\n }\n\n setLayers(mapId: string, layers: Array, callback: WorkerTileCallback) {\n this.getLayerIndex(mapId).replace(layers);\n callback();\n }\n\n updateLayers(mapId: string, params: {layers: Array, removedIds: Array}, callback: WorkerTileCallback) {\n this.getLayerIndex(mapId).update(params.layers, params.removedIds);\n callback();\n }\n\n loadTile(mapId: string, params: WorkerTileParameters & {type: string}, callback: WorkerTileCallback) {\n assert(params.type);\n this.getWorkerSource(mapId, params.type, params.source).loadTile(params, callback);\n }\n\n loadDEMTile(mapId: string, params: WorkerDEMTileParameters, callback: WorkerDEMTileCallback) {\n this.getDEMWorkerSource(mapId, params.source).loadTile(params, callback);\n }\n\n reloadTile(mapId: string, params: WorkerTileParameters & {type: string}, callback: WorkerTileCallback) {\n assert(params.type);\n this.getWorkerSource(mapId, params.type, params.source).reloadTile(params, callback);\n }\n\n abortTile(mapId: string, params: TileParameters & {type: string}, callback: WorkerTileCallback) {\n assert(params.type);\n this.getWorkerSource(mapId, params.type, params.source).abortTile(params, callback);\n }\n\n removeTile(mapId: string, params: TileParameters & {type: string}, callback: WorkerTileCallback) {\n assert(params.type);\n this.getWorkerSource(mapId, params.type, params.source).removeTile(params, callback);\n }\n\n removeDEMTile(mapId: string, params: TileParameters) {\n this.getDEMWorkerSource(mapId, params.source).removeTile(params);\n }\n\n removeSource(mapId: string, params: {source: string} & {type: string}, callback: WorkerTileCallback) {\n assert(params.type);\n assert(params.source);\n\n if (!this.workerSources[mapId] ||\n !this.workerSources[mapId][params.type] ||\n !this.workerSources[mapId][params.type][params.source]) {\n return;\n }\n\n const worker = this.workerSources[mapId][params.type][params.source];\n delete this.workerSources[mapId][params.type][params.source];\n\n if (worker.removeSource !== undefined) {\n worker.removeSource(params, callback);\n } else {\n callback();\n }\n }\n\n /**\n * Load a {@link WorkerSource} script at params.url. The script is run\n * (using importScripts) with `registerWorkerSource` in scope, which is a\n * function taking `(name, workerSourceObject)`.\n * @private\n */\n loadWorkerSource(map: string, params: { url: string }, callback: Callback) {\n try {\n this.self.importScripts(params.url);\n callback();\n } catch (e) {\n callback(e.toString());\n }\n }\n\n syncRTLPluginState(map: string, state: PluginState, callback: Callback) {\n try {\n globalRTLTextPlugin.setState(state);\n const pluginURL = globalRTLTextPlugin.getPluginURL();\n if (\n globalRTLTextPlugin.isLoaded() &&\n !globalRTLTextPlugin.isParsed() &&\n pluginURL != null // Not possible when `isLoaded` is true, but keeps flow happy\n ) {\n this.self.importScripts(pluginURL);\n const complete = globalRTLTextPlugin.isParsed();\n const error = complete ? undefined : new Error(`RTL Text Plugin failed to import scripts from ${pluginURL}`);\n callback(error, complete);\n }\n } catch (e) {\n callback(e.toString());\n }\n }\n\n getAvailableImages(mapId: string) {\n let availableImages = this.availableImages[mapId];\n\n if (!availableImages) {\n availableImages = [];\n }\n\n return availableImages;\n }\n\n getLayerIndex(mapId: string) {\n let layerIndexes = this.layerIndexes[mapId];\n if (!layerIndexes) {\n layerIndexes = this.layerIndexes[mapId] = new StyleLayerIndex();\n }\n return layerIndexes;\n }\n\n getWorkerSource(mapId: string, type: string, source: string) {\n if (!this.workerSources[mapId])\n this.workerSources[mapId] = {};\n if (!this.workerSources[mapId][type])\n this.workerSources[mapId][type] = {};\n\n if (!this.workerSources[mapId][type][source]) {\n // use a wrapped actor so that we can attach a target mapId param\n // to any messages invoked by the WorkerSource\n const actor = {\n send: (type, data, callback) => {\n this.actor.send(type, data, callback, mapId);\n }\n };\n this.workerSources[mapId][type][source] = new (this.workerSourceTypes[type]: any)((actor: any), this.getLayerIndex(mapId), this.getAvailableImages(mapId));\n }\n\n return this.workerSources[mapId][type][source];\n }\n\n getDEMWorkerSource(mapId: string, source: string) {\n if (!this.demWorkerSources[mapId])\n this.demWorkerSources[mapId] = {};\n\n if (!this.demWorkerSources[mapId][source]) {\n this.demWorkerSources[mapId][source] = new RasterDEMTileWorkerSource();\n }\n\n return this.demWorkerSources[mapId][source];\n }\n\n enforceCacheSizeLimit(mapId: string, limit: number) {\n enforceCacheSizeLimit(limit);\n }\n}\n\n/* global self, WorkerGlobalScope */\nif (typeof WorkerGlobalScope !== 'undefined' &&\n typeof self !== 'undefined' &&\n self instanceof WorkerGlobalScope) {\n self.worker = new Worker(self);\n}\n", "'use strict';\n\nif (typeof module !== 'undefined' && module.exports) {\n module.exports = isSupported;\n} else if (window) {\n window.mapboxgl = window.mapboxgl || {};\n window.mapboxgl.supported = isSupported;\n window.mapboxgl.notSupportedReason = notSupportedReason;\n}\n\n/**\n * Test whether the current browser supports Mapbox GL JS\n * @param {Object} options\n * @param {boolean} [options.failIfMajorPerformanceCaveat=false] Return `false`\n * if the performance of Mapbox GL JS would be dramatically worse than\n * expected (i.e. a software renderer is would be used)\n * @return {boolean}\n */\nfunction isSupported(options) {\n return !notSupportedReason(options);\n}\n\nfunction notSupportedReason(options) {\n if (!isBrowser()) return 'not a browser';\n if (!isArraySupported()) return 'insufficent Array support';\n if (!isFunctionSupported()) return 'insufficient Function support';\n if (!isObjectSupported()) return 'insufficient Object support';\n if (!isJSONSupported()) return 'insufficient JSON support';\n if (!isWorkerSupported()) return 'insufficient worker support';\n if (!isUint8ClampedArraySupported()) return 'insufficient Uint8ClampedArray support';\n if (!isArrayBufferSupported()) return 'insufficient ArrayBuffer support';\n if (!isCanvasGetImageDataSupported()) return 'insufficient Canvas/getImageData support';\n if (!isWebGLSupportedCached(options && options.failIfMajorPerformanceCaveat)) return 'insufficient WebGL support';\n}\n\nfunction isBrowser() {\n return typeof window !== 'undefined' && typeof document !== 'undefined';\n}\n\nfunction isArraySupported() {\n return (\n Array.prototype &&\n Array.prototype.every &&\n Array.prototype.filter &&\n Array.prototype.forEach &&\n Array.prototype.indexOf &&\n Array.prototype.lastIndexOf &&\n Array.prototype.map &&\n Array.prototype.some &&\n Array.prototype.reduce &&\n Array.prototype.reduceRight &&\n Array.isArray\n );\n}\n\nfunction isFunctionSupported() {\n return Function.prototype && Function.prototype.bind;\n}\n\nfunction isObjectSupported() {\n return (\n Object.keys &&\n Object.create &&\n Object.getPrototypeOf &&\n Object.getOwnPropertyNames &&\n Object.isSealed &&\n Object.isFrozen &&\n Object.isExtensible &&\n Object.getOwnPropertyDescriptor &&\n Object.defineProperty &&\n Object.defineProperties &&\n Object.seal &&\n Object.freeze &&\n Object.preventExtensions\n );\n}\n\nfunction isJSONSupported() {\n return 'JSON' in window && 'parse' in JSON && 'stringify' in JSON;\n}\n\nfunction isWorkerSupported() {\n if (!('Worker' in window && 'Blob' in window && 'URL' in window)) {\n return false;\n }\n\n var blob = new Blob([''], { type: 'text/javascript' });\n var workerURL = URL.createObjectURL(blob);\n var supported;\n var worker;\n\n try {\n worker = new Worker(workerURL);\n supported = true;\n } catch (e) {\n supported = false;\n }\n\n if (worker) {\n worker.terminate();\n }\n URL.revokeObjectURL(workerURL);\n\n return supported;\n}\n\n// IE11 only supports `Uint8ClampedArray` as of version\n// [KB2929437](https://support.microsoft.com/en-us/kb/2929437)\nfunction isUint8ClampedArraySupported() {\n return 'Uint8ClampedArray' in window;\n}\n\n// https://github.com/mapbox/mapbox-gl-supported/issues/19\nfunction isArrayBufferSupported() {\n return ArrayBuffer.isView;\n}\n\n// Some browsers or browser extensions block access to canvas data to prevent fingerprinting.\n// Mapbox GL uses this API to load sprites and images in general.\nfunction isCanvasGetImageDataSupported() {\n const canvas = document.createElement('canvas');\n canvas.width = canvas.height = 1;\n const context = canvas.getContext('2d');\n if (!context) {\n return false;\n }\n const imageData = context.getImageData(0, 0, 1, 1);\n return imageData && imageData.width === canvas.width;\n}\n\nvar isWebGLSupportedCache = {};\nfunction isWebGLSupportedCached(failIfMajorPerformanceCaveat) {\n\n if (isWebGLSupportedCache[failIfMajorPerformanceCaveat] === undefined) {\n isWebGLSupportedCache[failIfMajorPerformanceCaveat] = isWebGLSupported(failIfMajorPerformanceCaveat);\n }\n\n return isWebGLSupportedCache[failIfMajorPerformanceCaveat];\n}\n\nisSupported.webGLContextAttributes = {\n antialias: false,\n alpha: true,\n stencil: true,\n depth: true\n};\n\nfunction getWebGLContext(failIfMajorPerformanceCaveat) {\n var canvas = document.createElement('canvas');\n\n var attributes = Object.create(isSupported.webGLContextAttributes);\n attributes.failIfMajorPerformanceCaveat = failIfMajorPerformanceCaveat;\n\n if (canvas.probablySupportsContext) {\n return (\n canvas.probablySupportsContext('webgl', attributes) ||\n canvas.probablySupportsContext('experimental-webgl', attributes)\n );\n\n } else if (canvas.supportsContext) {\n return (\n canvas.supportsContext('webgl', attributes) ||\n canvas.supportsContext('experimental-webgl', attributes)\n );\n\n } else {\n return (\n canvas.getContext('webgl', attributes) ||\n canvas.getContext('experimental-webgl', attributes)\n );\n }\n}\n\nfunction isWebGLSupported(failIfMajorPerformanceCaveat) {\n const gl = getWebGLContext(failIfMajorPerformanceCaveat);\n if (!gl) {\n return false;\n }\n\n // Try compiling a shader and get its compile status. Some browsers like Brave block this API\n // to prevent fingerprinting. Unfortunately, this also means that Mapbox GL won't work.\n const shader = gl.createShader(gl.VERTEX_SHADER);\n if (!shader || gl.isContextLost()) {\n return false;\n }\n gl.shaderSource(shader, 'void main() {}');\n gl.compileShader(shader);\n return gl.getShaderParameter(shader, gl.COMPILE_STATUS) === true;\n}\n", "// @flow strict\n\nimport Point from '@mapbox/point-geometry';\n\nimport window from './window';\nimport assert from 'assert';\n\nconst DOM = {};\nexport default DOM;\n\nDOM.create = function (tagName: string, className: ?string, container?: HTMLElement) {\n const el = window.document.createElement(tagName);\n if (className !== undefined) el.className = className;\n if (container) container.appendChild(el);\n return el;\n};\n\nDOM.createNS = function (namespaceURI: string, tagName: string) {\n const el = window.document.createElementNS(namespaceURI, tagName);\n return el;\n};\n\nconst docStyle = window.document && window.document.documentElement.style;\n\nfunction testProp(props) {\n if (!docStyle) return props[0];\n for (let i = 0; i < props.length; i++) {\n if (props[i] in docStyle) {\n return props[i];\n }\n }\n return props[0];\n}\n\nconst selectProp = testProp(['userSelect', 'MozUserSelect', 'WebkitUserSelect', 'msUserSelect']);\nlet userSelect;\n\nDOM.disableDrag = function () {\n if (docStyle && selectProp) {\n userSelect = docStyle[selectProp];\n docStyle[selectProp] = 'none';\n }\n};\n\nDOM.enableDrag = function () {\n if (docStyle && selectProp) {\n docStyle[selectProp] = userSelect;\n }\n};\n\nconst transformProp = testProp(['transform', 'WebkitTransform']);\n\nDOM.setTransform = function(el: HTMLElement, value: string) {\n // https://github.com/facebook/flow/issues/7754\n // $FlowFixMe\n el.style[transformProp] = value;\n};\n\n// Feature detection for {passive: false} support in add/removeEventListener.\nlet passiveSupported = false;\n\ntry {\n // https://github.com/facebook/flow/issues/285\n // $FlowFixMe\n const options = Object.defineProperty({}, \"passive\", {\n get() { // eslint-disable-line\n passiveSupported = true;\n }\n });\n window.addEventListener(\"test\", options, options);\n window.removeEventListener(\"test\", options, options);\n} catch (err) {\n passiveSupported = false;\n}\n\nDOM.addEventListener = function(target: *, type: *, callback: *, options: {passive?: boolean, capture?: boolean} = {}) {\n if ('passive' in options && passiveSupported) {\n target.addEventListener(type, callback, options);\n } else {\n target.addEventListener(type, callback, options.capture);\n }\n};\n\nDOM.removeEventListener = function(target: *, type: *, callback: *, options: {passive?: boolean, capture?: boolean} = {}) {\n if ('passive' in options && passiveSupported) {\n target.removeEventListener(type, callback, options);\n } else {\n target.removeEventListener(type, callback, options.capture);\n }\n};\n\n// Suppress the next click, but only if it's immediate.\nconst suppressClick: MouseEventListener = function (e) {\n e.preventDefault();\n e.stopPropagation();\n window.removeEventListener('click', suppressClick, true);\n};\n\nDOM.suppressClick = function() {\n window.addEventListener('click', suppressClick, true);\n window.setTimeout(() => {\n window.removeEventListener('click', suppressClick, true);\n }, 0);\n};\n\nDOM.mousePos = function (el: HTMLElement, e: MouseEvent | window.TouchEvent | Touch) {\n const rect = el.getBoundingClientRect();\n return new Point(\n e.clientX - rect.left - el.clientLeft,\n e.clientY - rect.top - el.clientTop\n );\n};\n\nDOM.touchPos = function (el: HTMLElement, touches: TouchList) {\n const rect = el.getBoundingClientRect(),\n points = [];\n for (let i = 0; i < touches.length; i++) {\n points.push(new Point(\n touches[i].clientX - rect.left - el.clientLeft,\n touches[i].clientY - rect.top - el.clientTop\n ));\n }\n return points;\n};\n\nDOM.mouseButton = function (e: MouseEvent) {\n assert(e.type === 'mousedown' || e.type === 'mouseup');\n if (typeof window.InstallTrigger !== 'undefined' && e.button === 2 && e.ctrlKey &&\n window.navigator.platform.toUpperCase().indexOf('MAC') >= 0) {\n // Fix for https://github.com/mapbox/mapbox-gl-js/issues/3131:\n // Firefox (detected by InstallTrigger) on Mac determines e.button = 2 when\n // using Control + left click\n return 0;\n }\n return e.button;\n};\n\nDOM.remove = function(node: HTMLElement) {\n if (node.parentNode) {\n node.parentNode.removeChild(node);\n }\n};\n", "// @flow\n\nimport {RGBAImage} from '../util/image';\n\nimport type Map from '../ui/map';\n\nexport type StyleImageData = {\n data: RGBAImage,\n version: number,\n hasRenderCallback?: boolean,\n userImage?: StyleImageInterface\n};\n\nexport type StyleImageMetadata = {\n pixelRatio: number,\n sdf: boolean,\n stretchX?: Array<[number, number]>,\n stretchY?: Array<[number, number]>,\n content?: [number, number, number, number]\n};\n\nexport type StyleImage = StyleImageData & StyleImageMetadata;\n\nexport type StyleImageInterface = {\n width: number,\n height: number,\n data: Uint8Array | Uint8ClampedArray,\n render?: () => boolean,\n onAdd?: (map: Map, id: string) => void,\n onRemove?: () => void\n};\n\nexport function renderStyleImage(image: StyleImage) {\n const {userImage} = image;\n if (userImage && userImage.render) {\n const updated = userImage.render();\n if (updated) {\n image.data.replace(new Uint8Array(userImage.data.buffer));\n return true;\n }\n }\n return false;\n}\n\n/**\n * Interface for dynamically generated style images. This is a specification for\n * implementers to model: it is not an exported method or class.\n *\n * Images implementing this interface can be redrawn for every frame. They can be used to animate\n * icons and patterns or make them respond to user input. Style images can implement a\n * {@link StyleImageInterface#render} method. The method is called every frame and\n * can be used to update the image.\n *\n * @interface StyleImageInterface\n * @property {number} width\n * @property {number} height\n * @property {Uint8Array | Uint8ClampedArray} data\n *\n * @see [Add an animated icon to the map.](https://docs.mapbox.com/mapbox-gl-js/example/add-image-animated/)\n *\n * @example\n * var flashingSquare = {\n * width: 64,\n * height: 64,\n * data: new Uint8Array(64 * 64 * 4),\n *\n * onAdd: function(map) {\n * this.map = map;\n * },\n *\n * render: function() {\n * // keep repainting while the icon is on the map\n * this.map.triggerRepaint();\n *\n * // alternate between black and white based on the time\n * var value = Math.round(Date.now() / 1000) % 2 === 0 ? 255 : 0;\n *\n * // check if image needs to be changed\n * if (value !== this.previousValue) {\n * this.previousValue = value;\n *\n * var bytesPerPixel = 4;\n * for (var x = 0; x < this.width; x++) {\n * for (var y = 0; y < this.height; y++) {\n * var offset = (y * this.width + x) * bytesPerPixel;\n * this.data[offset + 0] = value;\n * this.data[offset + 1] = value;\n * this.data[offset + 2] = value;\n * this.data[offset + 3] = 255;\n * }\n * }\n *\n * // return true to indicate that the image changed\n * return true;\n * }\n * }\n * }\n *\n * map.addImage('flashing_square', flashingSquare);\n */\n\n/**\n * This method is called once before every frame where the icon will be used.\n * The method can optionally update the image's `data` member with a new image.\n *\n * If the method updates the image it must return `true` to commit the change.\n * If the method returns `false` or nothing the image is assumed to not have changed.\n *\n * If updates are infrequent it maybe easier to use {@link Map#updateImage} to update\n * the image instead of implementing this method.\n *\n * @function\n * @memberof StyleImageInterface\n * @instance\n * @name render\n * @return {boolean} `true` if this method updated the image. `false` if the image was not changed.\n */\n\n/**\n * Optional method called when the layer has been added to the Map with {@link Map#addImage}.\n *\n * @function\n * @memberof StyleImageInterface\n * @instance\n * @name onAdd\n * @param {Map} map The Map this custom layer was just added to.\n */\n\n/**\n * Optional method called when the icon is removed from the map with {@link Map#removeImage}.\n * This gives the image a chance to clean up resources and event listeners.\n *\n * @function\n * @memberof StyleImageInterface\n * @instance\n * @name onRemove\n */\n", "// @flow\n\nimport potpack from 'potpack';\n\nimport {Event, ErrorEvent, Evented} from '../util/evented';\nimport {RGBAImage} from '../util/image';\nimport {ImagePosition} from './image_atlas';\nimport Texture from './texture';\nimport assert from 'assert';\nimport {renderStyleImage} from '../style/style_image';\nimport {warnOnce} from '../util/util';\n\nimport type {StyleImage} from '../style/style_image';\nimport type Context from '../gl/context';\nimport type {Bin} from 'potpack';\nimport type {Callback} from '../types/callback';\n\ntype Pattern = {\n bin: Bin,\n position: ImagePosition\n};\n\n// When copied into the atlas texture, image data is padded by one pixel on each side. Icon\n// images are padded with fully transparent pixels, while pattern images are padded with a\n// copy of the image data wrapped from the opposite side. In both cases, this ensures the\n// correct behavior of GL_LINEAR texture sampling mode.\nconst padding = 1;\n\n/*\n ImageManager does three things:\n\n 1. Tracks requests for icon images from tile workers and sends responses when the requests are fulfilled.\n 2. Builds a texture atlas for pattern images.\n 3. Rerenders renderable images once per frame\n\n These are disparate responsibilities and should eventually be handled by different classes. When we implement\n data-driven support for `*-pattern`, we'll likely use per-bucket pattern atlases, and that would be a good time\n to refactor this.\n*/\nclass ImageManager extends Evented {\n images: {[_: string]: StyleImage};\n updatedImages: {[_: string]: boolean};\n callbackDispatchedThisFrame: {[_: string]: boolean};\n loaded: boolean;\n requestors: Array<{ids: Array, callback: Callback<{[_: string]: StyleImage}>}>;\n\n patterns: {[_: string]: Pattern};\n atlasImage: RGBAImage;\n atlasTexture: ?Texture;\n dirty: boolean;\n\n constructor() {\n super();\n this.images = {};\n this.updatedImages = {};\n this.callbackDispatchedThisFrame = {};\n this.loaded = false;\n this.requestors = [];\n\n this.patterns = {};\n this.atlasImage = new RGBAImage({width: 1, height: 1});\n this.dirty = true;\n }\n\n isLoaded() {\n return this.loaded;\n }\n\n setLoaded(loaded: boolean) {\n if (this.loaded === loaded) {\n return;\n }\n\n this.loaded = loaded;\n\n if (loaded) {\n for (const {ids, callback} of this.requestors) {\n this._notify(ids, callback);\n }\n this.requestors = [];\n }\n }\n\n getImage(id: string): ?StyleImage {\n return this.images[id];\n }\n\n addImage(id: string, image: StyleImage) {\n assert(!this.images[id]);\n if (this._validate(id, image)) {\n this.images[id] = image;\n }\n }\n\n _validate(id: string, image: StyleImage) {\n let valid = true;\n if (!this._validateStretch(image.stretchX, image.data && image.data.width)) {\n this.fire(new ErrorEvent(new Error(`Image \"${id}\" has invalid \"stretchX\" value`)));\n valid = false;\n }\n if (!this._validateStretch(image.stretchY, image.data && image.data.height)) {\n this.fire(new ErrorEvent(new Error(`Image \"${id}\" has invalid \"stretchY\" value`)));\n valid = false;\n }\n if (!this._validateContent(image.content, image)) {\n this.fire(new ErrorEvent(new Error(`Image \"${id}\" has invalid \"content\" value`)));\n valid = false;\n }\n return valid;\n }\n\n _validateStretch(stretch: ?Array<[number, number]> | void, size: number) {\n if (!stretch) return true;\n let last = 0;\n for (const part of stretch) {\n if (part[0] < last || part[1] < part[0] || size < part[1]) return false;\n last = part[1];\n }\n return true;\n }\n\n _validateContent(content: ?[number, number, number, number] | void, image: StyleImage) {\n if (!content) return true;\n if (content.length !== 4) return false;\n if (content[0] < 0 || image.data.width < content[0]) return false;\n if (content[1] < 0 || image.data.height < content[1]) return false;\n if (content[2] < 0 || image.data.width < content[2]) return false;\n if (content[3] < 0 || image.data.height < content[3]) return false;\n if (content[2] < content[0]) return false;\n if (content[3] < content[1]) return false;\n return true;\n }\n\n updateImage(id: string, image: StyleImage) {\n const oldImage = this.images[id];\n assert(oldImage);\n assert(oldImage.data.width === image.data.width);\n assert(oldImage.data.height === image.data.height);\n image.version = oldImage.version + 1;\n this.images[id] = image;\n this.updatedImages[id] = true;\n }\n\n removeImage(id: string) {\n assert(this.images[id]);\n const image = this.images[id];\n delete this.images[id];\n delete this.patterns[id];\n\n if (image.userImage && image.userImage.onRemove) {\n image.userImage.onRemove();\n }\n }\n\n listImages(): Array {\n return Object.keys(this.images);\n }\n\n getImages(ids: Array, callback: Callback<{[_: string]: StyleImage}>) {\n // If the sprite has been loaded, or if all the icon dependencies are already present\n // (i.e. if they've been added via runtime styling), then notify the requestor immediately.\n // Otherwise, delay notification until the sprite is loaded. At that point, if any of the\n // dependencies are still unavailable, we'll just assume they are permanently missing.\n let hasAllDependencies = true;\n if (!this.isLoaded()) {\n for (const id of ids) {\n if (!this.images[id]) {\n hasAllDependencies = false;\n }\n }\n }\n if (this.isLoaded() || hasAllDependencies) {\n this._notify(ids, callback);\n } else {\n this.requestors.push({ids, callback});\n }\n }\n\n _notify(ids: Array, callback: Callback<{[_: string]: StyleImage}>) {\n const response = {};\n\n for (const id of ids) {\n if (!this.images[id]) {\n this.fire(new Event('styleimagemissing', {id}));\n }\n const image = this.images[id];\n if (image) {\n // Clone the image so that our own copy of its ArrayBuffer doesn't get transferred.\n response[id] = {\n data: image.data.clone(),\n pixelRatio: image.pixelRatio,\n sdf: image.sdf,\n version: image.version,\n stretchX: image.stretchX,\n stretchY: image.stretchY,\n content: image.content,\n hasRenderCallback: Boolean(image.userImage && image.userImage.render)\n };\n } else {\n warnOnce(`Image \"${id}\" could not be loaded. Please make sure you have added the image with map.addImage() or a \"sprite\" property in your style. You can provide missing images by listening for the \"styleimagemissing\" map event.`);\n }\n }\n\n callback(null, response);\n }\n\n // Pattern stuff\n\n getPixelSize() {\n const {width, height} = this.atlasImage;\n return {width, height};\n }\n\n getPattern(id: string): ?ImagePosition {\n const pattern = this.patterns[id];\n\n const image = this.getImage(id);\n if (!image) {\n return null;\n }\n\n if (pattern && pattern.position.version === image.version) {\n return pattern.position;\n }\n\n if (!pattern) {\n const w = image.data.width + padding * 2;\n const h = image.data.height + padding * 2;\n const bin = {w, h, x: 0, y: 0};\n const position = new ImagePosition(bin, image);\n this.patterns[id] = {bin, position};\n } else {\n pattern.position.version = image.version;\n }\n\n this._updatePatternAtlas();\n\n return this.patterns[id].position;\n }\n\n bind(context: Context) {\n const gl = context.gl;\n if (!this.atlasTexture) {\n this.atlasTexture = new Texture(context, this.atlasImage, gl.RGBA);\n } else if (this.dirty) {\n this.atlasTexture.update(this.atlasImage);\n this.dirty = false;\n }\n\n this.atlasTexture.bind(gl.LINEAR, gl.CLAMP_TO_EDGE);\n }\n\n _updatePatternAtlas() {\n const bins = [];\n for (const id in this.patterns) {\n bins.push(this.patterns[id].bin);\n }\n\n const {w, h} = potpack(bins);\n\n const dst = this.atlasImage;\n dst.resize({width: w || 1, height: h || 1});\n\n for (const id in this.patterns) {\n const {bin} = this.patterns[id];\n const x = bin.x + padding;\n const y = bin.y + padding;\n const src = this.images[id].data;\n const w = src.width;\n const h = src.height;\n\n RGBAImage.copy(src, dst, {x: 0, y: 0}, {x, y}, {width: w, height: h});\n\n // Add 1 pixel wrapped padding on each side of the image.\n RGBAImage.copy(src, dst, {x: 0, y: h - 1}, {x, y: y - 1}, {width: w, height: 1}); // T\n RGBAImage.copy(src, dst, {x: 0, y: 0}, {x, y: y + h}, {width: w, height: 1}); // B\n RGBAImage.copy(src, dst, {x: w - 1, y: 0}, {x: x - 1, y}, {width: 1, height: h}); // L\n RGBAImage.copy(src, dst, {x: 0, y: 0}, {x: x + w, y}, {width: 1, height: h}); // R\n }\n\n this.dirty = true;\n }\n\n beginFrame() {\n this.callbackDispatchedThisFrame = {};\n }\n\n dispatchRenderCallbacks(ids: Array) {\n for (const id of ids) {\n\n // the callback for the image was already dispatched for a different frame\n if (this.callbackDispatchedThisFrame[id]) continue;\n this.callbackDispatchedThisFrame[id] = true;\n\n const image = this.images[id];\n assert(image);\n\n const updated = renderStyleImage(image);\n if (updated) {\n this.updateImage(id, image);\n }\n }\n }\n}\n\nexport default ImageManager;\n", "'use strict';\n\nmodule.exports = TinySDF;\nmodule.exports.default = TinySDF;\n\nvar INF = 1e20;\n\nfunction TinySDF(fontSize, buffer, radius, cutoff, fontFamily, fontWeight) {\n this.fontSize = fontSize || 24;\n this.buffer = buffer === undefined ? 3 : buffer;\n this.cutoff = cutoff || 0.25;\n this.fontFamily = fontFamily || 'sans-serif';\n this.fontWeight = fontWeight || 'normal';\n this.radius = radius || 8;\n var size = this.size = this.fontSize + this.buffer * 2;\n\n this.canvas = document.createElement('canvas');\n this.canvas.width = this.canvas.height = size;\n\n this.ctx = this.canvas.getContext('2d');\n this.ctx.font = this.fontWeight + ' ' + this.fontSize + 'px ' + this.fontFamily;\n this.ctx.textBaseline = 'middle';\n this.ctx.fillStyle = 'black';\n\n // temporary arrays for the distance transform\n this.gridOuter = new Float64Array(size * size);\n this.gridInner = new Float64Array(size * size);\n this.f = new Float64Array(size);\n this.d = new Float64Array(size);\n this.z = new Float64Array(size + 1);\n this.v = new Int16Array(size);\n\n // hack around https://bugzilla.mozilla.org/show_bug.cgi?id=737852\n this.middle = Math.round((size / 2) * (navigator.userAgent.indexOf('Gecko/') >= 0 ? 1.2 : 1));\n}\n\nTinySDF.prototype.draw = function (char) {\n this.ctx.clearRect(0, 0, this.size, this.size);\n this.ctx.fillText(char, this.buffer, this.middle);\n\n var imgData = this.ctx.getImageData(0, 0, this.size, this.size);\n var alphaChannel = new Uint8ClampedArray(this.size * this.size);\n\n for (var i = 0; i < this.size * this.size; i++) {\n var a = imgData.data[i * 4 + 3] / 255; // alpha value\n this.gridOuter[i] = a === 1 ? 0 : a === 0 ? INF : Math.pow(Math.max(0, 0.5 - a), 2);\n this.gridInner[i] = a === 1 ? INF : a === 0 ? 0 : Math.pow(Math.max(0, a - 0.5), 2);\n }\n\n edt(this.gridOuter, this.size, this.size, this.f, this.d, this.v, this.z);\n edt(this.gridInner, this.size, this.size, this.f, this.d, this.v, this.z);\n\n for (i = 0; i < this.size * this.size; i++) {\n var d = this.gridOuter[i] - this.gridInner[i];\n alphaChannel[i] = Math.max(0, Math.min(255, Math.round(255 - 255 * (d / this.radius + this.cutoff))));\n }\n\n return alphaChannel;\n};\n\n// 2D Euclidean distance transform by Felzenszwalb & Huttenlocher https://cs.brown.edu/~pff/papers/dt-final.pdf\nfunction edt(data, width, height, f, d, v, z) {\n for (var x = 0; x < width; x++) {\n for (var y = 0; y < height; y++) {\n f[y] = data[y * width + x];\n }\n edt1d(f, d, v, z, height);\n for (y = 0; y < height; y++) {\n data[y * width + x] = d[y];\n }\n }\n for (y = 0; y < height; y++) {\n for (x = 0; x < width; x++) {\n f[x] = data[y * width + x];\n }\n edt1d(f, d, v, z, width);\n for (x = 0; x < width; x++) {\n data[y * width + x] = Math.sqrt(d[x]);\n }\n }\n}\n\n// 1D squared distance transform\nfunction edt1d(f, d, v, z, n) {\n v[0] = 0;\n z[0] = -INF;\n z[1] = +INF;\n\n for (var q = 1, k = 0; q < n; q++) {\n var s = ((f[q] + q * q) - (f[v[k]] + v[k] * v[k])) / (2 * q - 2 * v[k]);\n while (s <= z[k]) {\n k--;\n s = ((f[q] + q * q) - (f[v[k]] + v[k] * v[k])) / (2 * q - 2 * v[k]);\n }\n k++;\n v[k] = q;\n z[k] = s;\n z[k + 1] = +INF;\n }\n\n for (q = 0, k = 0; q < n; q++) {\n while (z[k + 1] < q) k++;\n d[q] = (q - v[k]) * (q - v[k]) + f[v[k]];\n }\n}\n", "// @flow\n\nimport loadGlyphRange from '../style/load_glyph_range';\n\nimport TinySDF from '@mapbox/tiny-sdf';\nimport isChar from '../util/is_char_in_unicode_block';\nimport {asyncAll} from '../util/util';\nimport {AlphaImage} from '../util/image';\n\nimport type {StyleGlyph} from '../style/style_glyph';\nimport type {RequestManager} from '../util/mapbox';\nimport type {Callback} from '../types/callback';\n\ntype Entry = {\n // null means we've requested the range, but the glyph wasn't included in the result.\n glyphs: {[id: number]: StyleGlyph | null},\n requests: {[range: number]: Array>},\n ranges: {[range: number]: boolean | null},\n tinySDF?: TinySDF\n};\n\nclass GlyphManager {\n requestManager: RequestManager;\n localIdeographFontFamily: ?string;\n entries: {[_: string]: Entry};\n url: ?string;\n\n // exposed as statics to enable stubbing in unit tests\n static loadGlyphRange: typeof loadGlyphRange;\n static TinySDF: Class;\n\n constructor(requestManager: RequestManager, localIdeographFontFamily: ?string) {\n this.requestManager = requestManager;\n this.localIdeographFontFamily = localIdeographFontFamily;\n this.entries = {};\n }\n\n setURL(url: ?string) {\n this.url = url;\n }\n\n getGlyphs(glyphs: {[stack: string]: Array}, callback: Callback<{[stack: string]: {[id: number]: ?StyleGlyph}}>) {\n const all = [];\n\n for (const stack in glyphs) {\n for (const id of glyphs[stack]) {\n all.push({stack, id});\n }\n }\n\n asyncAll(all, ({stack, id}, callback: Callback<{stack: string, id: number, glyph: ?StyleGlyph}>) => {\n let entry = this.entries[stack];\n if (!entry) {\n entry = this.entries[stack] = {\n glyphs: {},\n requests: {},\n ranges: {}\n };\n }\n\n let glyph = entry.glyphs[id];\n if (glyph !== undefined) {\n callback(null, {stack, id, glyph});\n return;\n }\n\n glyph = this._tinySDF(entry, stack, id);\n if (glyph) {\n entry.glyphs[id] = glyph;\n callback(null, {stack, id, glyph});\n return;\n }\n\n const range = Math.floor(id / 256);\n if (range * 256 > 65535) {\n callback(new Error('glyphs > 65535 not supported'));\n return;\n }\n\n if (entry.ranges[range]) {\n callback(null, {stack, id, glyph});\n return;\n }\n\n let requests = entry.requests[range];\n if (!requests) {\n requests = entry.requests[range] = [];\n GlyphManager.loadGlyphRange(stack, range, (this.url: any), this.requestManager,\n (err, response: ?{[_: number]: StyleGlyph | null}) => {\n if (response) {\n for (const id in response) {\n if (!this._doesCharSupportLocalGlyph(+id)) {\n entry.glyphs[+id] = response[+id];\n }\n }\n entry.ranges[range] = true;\n }\n for (const cb of requests) {\n cb(err, response);\n }\n delete entry.requests[range];\n });\n }\n\n requests.push((err, result: ?{[_: number]: StyleGlyph | null}) => {\n if (err) {\n callback(err);\n } else if (result) {\n callback(null, {stack, id, glyph: result[id] || null});\n }\n });\n }, (err, glyphs: ?Array<{stack: string, id: number, glyph: ?StyleGlyph}>) => {\n if (err) {\n callback(err);\n } else if (glyphs) {\n const result = {};\n\n for (const {stack, id, glyph} of glyphs) {\n // Clone the glyph so that our own copy of its ArrayBuffer doesn't get transferred.\n (result[stack] || (result[stack] = {}))[id] = glyph && {\n id: glyph.id,\n bitmap: glyph.bitmap.clone(),\n metrics: glyph.metrics\n };\n }\n\n callback(null, result);\n }\n });\n }\n\n _doesCharSupportLocalGlyph(id: number): boolean {\n /* eslint-disable new-cap */\n return !!this.localIdeographFontFamily &&\n (isChar['CJK Unified Ideographs'](id) ||\n isChar['Hangul Syllables'](id) ||\n isChar['Hiragana'](id) ||\n isChar['Katakana'](id));\n /* eslint-enable new-cap */\n }\n\n _tinySDF(entry: Entry, stack: string, id: number): ?StyleGlyph {\n const family = this.localIdeographFontFamily;\n if (!family) {\n return;\n }\n\n if (!this._doesCharSupportLocalGlyph(id)) {\n return;\n }\n\n let tinySDF = entry.tinySDF;\n if (!tinySDF) {\n let fontWeight = '400';\n if (/bold/i.test(stack)) {\n fontWeight = '900';\n } else if (/medium/i.test(stack)) {\n fontWeight = '500';\n } else if (/light/i.test(stack)) {\n fontWeight = '200';\n }\n tinySDF = entry.tinySDF = new GlyphManager.TinySDF(24, 3, 8, .25, family, fontWeight);\n }\n\n return {\n id,\n bitmap: new AlphaImage({width: 30, height: 30}, tinySDF.draw(String.fromCharCode(id))),\n metrics: {\n width: 24,\n height: 24,\n left: 0,\n top: -8,\n advance: 24\n }\n };\n }\n}\n\nGlyphManager.loadGlyphRange = loadGlyphRange;\nGlyphManager.TinySDF = TinySDF;\n\nexport default GlyphManager;\n", "// @flow\n\nimport {getArrayBuffer, ResourceType} from '../util/ajax';\n\nimport parseGlyphPBF from './parse_glyph_pbf';\n\nimport type {StyleGlyph} from './style_glyph';\nimport type {RequestManager} from '../util/mapbox';\nimport type {Callback} from '../types/callback';\n\nexport default function (fontstack: string,\n range: number,\n urlTemplate: string,\n requestManager: RequestManager,\n callback: Callback<{[_: number]: StyleGlyph | null}>) {\n const begin = range * 256;\n const end = begin + 255;\n\n const request = requestManager.transformRequest(\n requestManager.normalizeGlyphsURL(urlTemplate)\n .replace('{fontstack}', fontstack)\n .replace('{range}', `${begin}-${end}`),\n ResourceType.Glyphs);\n\n getArrayBuffer(request, (err: ?Error, data: ?ArrayBuffer) => {\n if (err) {\n callback(err);\n } else if (data) {\n const glyphs = {};\n\n for (const glyph of parseGlyphPBF(data)) {\n glyphs[glyph.id] = glyph;\n }\n\n callback(null, glyphs);\n }\n });\n}\n", "// @flow\n\nimport styleSpec from '../style-spec/reference/latest';\n\nimport {endsWith, extend, sphericalToCartesian} from '../util/util';\nimport {Evented} from '../util/evented';\nimport {\n validateStyle,\n validateLight,\n emitValidationErrors\n} from './validate_style';\nimport Color from '../style-spec/util/color';\nimport {number as interpolate} from '../style-spec/util/interpolate';\n\nimport type {StylePropertySpecification} from '../style-spec/style-spec';\nimport type EvaluationParameters from './evaluation_parameters';\nimport type {StyleSetterOptions} from '../style/style';\nimport {Properties, Transitionable, Transitioning, PossiblyEvaluated, DataConstantProperty} from './properties';\n\nimport type {\n Property,\n PropertyValue,\n TransitionParameters\n} from './properties';\n\nimport type {LightSpecification} from '../style-spec/types';\n\ntype LightPosition = {\n x: number,\n y: number,\n z: number\n};\n\nclass LightPositionProperty implements Property<[number, number, number], LightPosition> {\n specification: StylePropertySpecification;\n\n constructor() {\n this.specification = styleSpec.light.position;\n }\n\n possiblyEvaluate(value: PropertyValue<[number, number, number], LightPosition>, parameters: EvaluationParameters): LightPosition {\n return sphericalToCartesian(value.expression.evaluate(parameters));\n }\n\n interpolate(a: LightPosition, b: LightPosition, t: number): LightPosition {\n return {\n x: interpolate(a.x, b.x, t),\n y: interpolate(a.y, b.y, t),\n z: interpolate(a.z, b.z, t),\n };\n }\n}\n\ntype Props = {|\n \"anchor\": DataConstantProperty<\"map\" | \"viewport\">,\n \"position\": LightPositionProperty,\n \"color\": DataConstantProperty,\n \"intensity\": DataConstantProperty,\n|};\n\nconst properties: Properties = new Properties({\n \"anchor\": new DataConstantProperty(styleSpec.light.anchor),\n \"position\": new LightPositionProperty(),\n \"color\": new DataConstantProperty(styleSpec.light.color),\n \"intensity\": new DataConstantProperty(styleSpec.light.intensity),\n});\n\nconst TRANSITION_SUFFIX = '-transition';\n\n/*\n * Represents the light used to light extruded features.\n */\nclass Light extends Evented {\n _transitionable: Transitionable;\n _transitioning: Transitioning;\n properties: PossiblyEvaluated;\n\n constructor(lightOptions?: LightSpecification) {\n super();\n this._transitionable = new Transitionable(properties);\n this.setLight(lightOptions);\n this._transitioning = this._transitionable.untransitioned();\n }\n\n getLight() {\n return this._transitionable.serialize();\n }\n\n setLight(light?: LightSpecification, options: StyleSetterOptions = {}) {\n if (this._validate(validateLight, light, options)) {\n return;\n }\n\n for (const name in light) {\n const value = light[name];\n if (endsWith(name, TRANSITION_SUFFIX)) {\n this._transitionable.setTransition(name.slice(0, -TRANSITION_SUFFIX.length), value);\n } else {\n this._transitionable.setValue(name, value);\n }\n }\n }\n\n updateTransitions(parameters: TransitionParameters) {\n this._transitioning = this._transitionable.transitioned(parameters, this._transitioning);\n }\n\n hasTransition() {\n return this._transitioning.hasTransition();\n }\n\n recalculate(parameters: EvaluationParameters) {\n this.properties = this._transitioning.possiblyEvaluate(parameters);\n }\n\n _validate(validate: Function, value: mixed, options?: {validate?: boolean}) {\n if (options && options.validate === false) {\n return false;\n }\n\n return emitValidationErrors(this, validate.call(validateStyle, extend({\n value,\n // Workaround for https://github.com/mapbox/mapbox-gl-js/issues/2407\n style: {glyphs: true, sprite: true},\n styleSpec\n })));\n }\n}\n\nexport default Light;\n", "// @flow\n\nimport {warnOnce} from '../util/util';\n\nimport type Context from '../gl/context';\n\n/**\n * A LineAtlas lets us reuse rendered dashed lines\n * by writing many of them to a texture and then fetching their positions\n * using .getDash.\n *\n * @param {number} width\n * @param {number} height\n * @private\n */\nclass LineAtlas {\n width: number;\n height: number;\n nextRow: number;\n bytes: number;\n data: Uint8Array;\n dashEntry: {[_: string]: any};\n dirty: boolean;\n texture: WebGLTexture;\n\n constructor(width: number, height: number) {\n this.width = width;\n this.height = height;\n this.nextRow = 0;\n\n this.data = new Uint8Array(this.width * this.height);\n\n this.dashEntry = {};\n }\n\n /**\n * Get or create a dash line pattern.\n *\n * @param {Array} dasharray\n * @param {boolean} round whether to add circle caps in between dash segments\n * @returns {Object} position of dash texture in { y, height, width }\n * @private\n */\n getDash(dasharray: Array, round: boolean) {\n const key = dasharray.join(\",\") + String(round);\n\n if (!this.dashEntry[key]) {\n this.dashEntry[key] = this.addDash(dasharray, round);\n }\n return this.dashEntry[key];\n }\n\n getDashRanges(dasharray: Array, lineAtlasWidth: number, stretch: number) {\n // If dasharray has an odd length, both the first and last parts\n // are dashes and should be joined seamlessly.\n const oddDashArray = dasharray.length % 2 === 1;\n\n const ranges = [];\n\n let left = oddDashArray ? -dasharray[dasharray.length - 1] * stretch : 0;\n let right = dasharray[0] * stretch;\n let isDash = true;\n\n ranges.push({left, right, isDash, zeroLength: dasharray[0] === 0});\n\n let currentDashLength = dasharray[0];\n for (let i = 1; i < dasharray.length; i++) {\n isDash = !isDash;\n\n const dashLength = dasharray[i];\n left = currentDashLength * stretch;\n currentDashLength += dashLength;\n right = currentDashLength * stretch;\n\n ranges.push({left, right, isDash, zeroLength: dashLength === 0});\n }\n\n return ranges;\n }\n\n addRoundDash(ranges: Object, stretch: number, n: number) {\n const halfStretch = stretch / 2;\n\n for (let y = -n; y <= n; y++) {\n const row = this.nextRow + n + y;\n const index = this.width * row;\n let currIndex = 0;\n let range = ranges[currIndex];\n\n for (let x = 0; x < this.width; x++) {\n if (x / range.right > 1) { range = ranges[++currIndex]; }\n\n const distLeft = Math.abs(x - range.left);\n const distRight = Math.abs(x - range.right);\n const minDist = Math.min(distLeft, distRight);\n let signedDistance;\n\n const distMiddle = y / n * (halfStretch + 1);\n if (range.isDash) {\n const distEdge = halfStretch - Math.abs(distMiddle);\n signedDistance = Math.sqrt(minDist * minDist + distEdge * distEdge);\n } else {\n signedDistance = halfStretch - Math.sqrt(minDist * minDist + distMiddle * distMiddle);\n }\n\n this.data[index + x] = Math.max(0, Math.min(255, signedDistance + 128));\n }\n }\n }\n\n addRegularDash(ranges: Object) {\n\n // Collapse any zero-length range\n // Collapse neighbouring same-type parts into a single part\n for (let i = ranges.length - 1; i >= 0; --i) {\n const part = ranges[i];\n const next = ranges[i + 1];\n if (part.zeroLength) {\n ranges.splice(i, 1);\n } else if (next && next.isDash === part.isDash) {\n next.left = part.left;\n ranges.splice(i, 1);\n }\n }\n\n // Combine the first and last parts if possible\n const first = ranges[0];\n const last = ranges[ranges.length - 1];\n if (first.isDash === last.isDash) {\n first.left = last.left - this.width;\n last.right = first.right + this.width;\n }\n\n const index = this.width * this.nextRow;\n let currIndex = 0;\n let range = ranges[currIndex];\n\n for (let x = 0; x < this.width; x++) {\n if (x / range.right > 1) {\n range = ranges[++currIndex];\n }\n\n const distLeft = Math.abs(x - range.left);\n const distRight = Math.abs(x - range.right);\n\n const minDist = Math.min(distLeft, distRight);\n const signedDistance = range.isDash ? minDist : -minDist;\n\n this.data[index + x] = Math.max(0, Math.min(255, signedDistance + 128));\n }\n }\n\n addDash(dasharray: Array, round: boolean) {\n const n = round ? 7 : 0;\n const height = 2 * n + 1;\n\n if (this.nextRow + height > this.height) {\n warnOnce('LineAtlas out of space');\n return null;\n }\n\n let length = 0;\n for (let i = 0; i < dasharray.length; i++) { length += dasharray[i]; }\n\n if (length !== 0) {\n const stretch = this.width / length;\n const ranges = this.getDashRanges(dasharray, this.width, stretch);\n\n if (round) {\n this.addRoundDash(ranges, stretch, n);\n } else {\n this.addRegularDash(ranges);\n }\n }\n\n const dashEntry = {\n y: (this.nextRow + n + 0.5) / this.height,\n height: 2 * n / this.height,\n width: length\n };\n\n this.nextRow += height;\n this.dirty = true;\n\n return dashEntry;\n }\n\n bind(context: Context) {\n const gl = context.gl;\n if (!this.texture) {\n this.texture = gl.createTexture();\n gl.bindTexture(gl.TEXTURE_2D, this.texture);\n gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT);\n gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT);\n gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);\n gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);\n gl.texImage2D(gl.TEXTURE_2D, 0, gl.ALPHA, this.width, this.height, 0, gl.ALPHA, gl.UNSIGNED_BYTE, this.data);\n\n } else {\n gl.bindTexture(gl.TEXTURE_2D, this.texture);\n\n if (this.dirty) {\n this.dirty = false;\n gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, this.width, this.height, gl.ALPHA, gl.UNSIGNED_BYTE, this.data);\n }\n }\n }\n}\n\nexport default LineAtlas;\n", "// @flow\n\nimport {uniqueId, asyncAll} from './util';\nimport Actor from './actor';\nimport assert from 'assert';\n\nimport type WorkerPool from './worker_pool';\n\n/**\n * Responsible for sending messages from a {@link Source} to an associated\n * {@link WorkerSource}.\n *\n * @private\n */\nclass Dispatcher {\n workerPool: WorkerPool;\n actors: Array;\n currentActor: number;\n id: number;\n\n // exposed to allow stubbing in unit tests\n static Actor: Class;\n\n constructor(workerPool: WorkerPool, parent: any) {\n this.workerPool = workerPool;\n this.actors = [];\n this.currentActor = 0;\n this.id = uniqueId();\n const workers = this.workerPool.acquire(this.id);\n for (let i = 0; i < workers.length; i++) {\n const worker = workers[i];\n const actor = new Dispatcher.Actor(worker, parent, this.id);\n actor.name = `Worker ${i}`;\n this.actors.push(actor);\n }\n assert(this.actors.length);\n }\n\n /**\n * Broadcast a message to all Workers.\n * @private\n */\n broadcast(type: string, data: mixed, cb?: Function) {\n assert(this.actors.length);\n cb = cb || function () {};\n asyncAll(this.actors, (actor, done) => {\n actor.send(type, data, done);\n }, cb);\n }\n\n /**\n * Acquires an actor to dispatch messages to. The actors are distributed in round-robin fashion.\n * @returns An actor object backed by a web worker for processing messages.\n */\n getActor(): Actor {\n assert(this.actors.length);\n this.currentActor = (this.currentActor + 1) % this.actors.length;\n return this.actors[this.currentActor];\n }\n\n remove() {\n this.actors.forEach((actor) => { actor.remove(); });\n this.actors = [];\n this.workerPool.release(this.id);\n }\n}\n\nDispatcher.Actor = Actor;\n\nexport default Dispatcher;\n", "// @flow\n\nimport {pick, extend} from '../util/util';\n\nimport {getJSON, ResourceType} from '../util/ajax';\nimport browser from '../util/browser';\n\nimport type {RequestManager} from '../util/mapbox';\nimport type {Callback} from '../types/callback';\nimport type {TileJSON} from '../types/tilejson';\nimport type {Cancelable} from '../types/cancelable';\n\nexport default function(options: any, requestManager: RequestManager, callback: Callback): Cancelable {\n const loaded = function(err: ?Error, tileJSON: ?Object) {\n if (err) {\n return callback(err);\n } else if (tileJSON) {\n const result: any = pick(\n // explicit source options take precedence over TileJSON\n extend(tileJSON, options),\n ['tiles', 'minzoom', 'maxzoom', 'attribution', 'mapbox_logo', 'bounds', 'scheme', 'tileSize', 'encoding']\n );\n\n if (tileJSON.vector_layers) {\n result.vectorLayers = tileJSON.vector_layers;\n result.vectorLayerIds = result.vectorLayers.map((layer) => { return layer.id; });\n }\n\n result.tiles = requestManager.canonicalizeTileset(result, options.url);\n callback(null, result);\n }\n };\n\n if (options.url) {\n return getJSON(requestManager.transformRequest(requestManager.normalizeSourceURL(options.url), ResourceType.Source), loaded);\n } else {\n return browser.frame(() => loaded(null, options));\n }\n}\n", "// @flow\n\nimport LngLatBounds from '../geo/lng_lat_bounds';\nimport {mercatorXfromLng, mercatorYfromLat} from '../geo/mercator_coordinate';\n\nimport type {CanonicalTileID} from './tile_id';\n\nclass TileBounds {\n bounds: LngLatBounds;\n minzoom: number;\n maxzoom: number;\n\n constructor(bounds: [number, number, number, number], minzoom: ?number, maxzoom: ?number) {\n this.bounds = LngLatBounds.convert(this.validateBounds(bounds));\n this.minzoom = minzoom || 0;\n this.maxzoom = maxzoom || 24;\n }\n\n validateBounds(bounds: [number, number, number, number]) {\n // make sure the bounds property contains valid longitude and latitudes\n if (!Array.isArray(bounds) || bounds.length !== 4) return [-180, -90, 180, 90];\n return [Math.max(-180, bounds[0]), Math.max(-90, bounds[1]), Math.min(180, bounds[2]), Math.min(90, bounds[3])];\n }\n\n contains(tileID: CanonicalTileID) {\n const worldSize = Math.pow(2, tileID.z);\n const level = {\n minX: Math.floor(mercatorXfromLng(this.bounds.getWest()) * worldSize),\n minY: Math.floor(mercatorYfromLat(this.bounds.getNorth()) * worldSize),\n maxX: Math.ceil(mercatorXfromLng(this.bounds.getEast()) * worldSize),\n maxY: Math.ceil(mercatorYfromLat(this.bounds.getSouth()) * worldSize)\n };\n const hit = tileID.x >= level.minX && tileID.x < level.maxX && tileID.y >= level.minY && tileID.y < level.maxY;\n return hit;\n }\n}\n\nexport default TileBounds;\n", "// @flow\n\nimport {Event, ErrorEvent, Evented} from '../util/evented';\n\nimport {extend, pick} from '../util/util';\nimport loadTileJSON from './load_tilejson';\nimport {postTurnstileEvent, postMapLoadEvent} from '../util/mapbox';\nimport TileBounds from './tile_bounds';\nimport {ResourceType} from '../util/ajax';\nimport browser from '../util/browser';\nimport {cacheEntryPossiblyAdded} from '../util/tile_request_cache';\n\nimport type {Source} from './source';\nimport type {OverscaledTileID} from './tile_id';\nimport type Map from '../ui/map';\nimport type Dispatcher from '../util/dispatcher';\nimport type Tile from './tile';\nimport type {Callback} from '../types/callback';\nimport type {Cancelable} from '../types/cancelable';\nimport type {VectorSourceSpecification, PromoteIdSpecification} from '../style-spec/types';\n\n/**\n * A source containing vector tiles in [Mapbox Vector Tile format](https://docs.mapbox.com/vector-tiles/reference/).\n * (See the [Style Specification](https://docs.mapbox.com/mapbox-gl-js/style-spec/sources/#vector) for detailed documentation of options.)\n *\n * @example\n * map.addSource('some id', {\n * type: 'vector',\n * url: 'mapbox://mapbox.mapbox-streets-v6'\n * });\n *\n * @example\n * map.addSource('some id', {\n * type: 'vector',\n * tiles: ['https://d25uarhxywzl1j.cloudfront.net/v0.1/{z}/{x}/{y}.mvt'],\n * minzoom: 6,\n * maxzoom: 14\n * });\n *\n * @example\n * map.getSource('some id').setUrl(\"mapbox://mapbox.mapbox-streets-v6\");\n *\n * @example\n * map.getSource('some id').setTiles(['https://d25uarhxywzl1j.cloudfront.net/v0.1/{z}/{x}/{y}.mvt']);\n * @see [Add a vector tile source](https://docs.mapbox.com/mapbox-gl-js/example/vector-source/)\n * @see [Add a third party vector tile source](https://docs.mapbox.com/mapbox-gl-js/example/third-party/)\n */\nclass VectorTileSource extends Evented implements Source {\n type: 'vector';\n id: string;\n minzoom: number;\n maxzoom: number;\n url: string;\n scheme: string;\n tileSize: number;\n promoteId: ?PromoteIdSpecification;\n\n _options: VectorSourceSpecification;\n _collectResourceTiming: boolean;\n dispatcher: Dispatcher;\n map: Map;\n bounds: ?[number, number, number, number];\n tiles: Array;\n tileBounds: TileBounds;\n reparseOverscaled: boolean;\n isTileClipped: boolean;\n _tileJSONRequest: ?Cancelable;\n _loaded: boolean;\n\n constructor(id: string, options: VectorSourceSpecification & {collectResourceTiming: boolean}, dispatcher: Dispatcher, eventedParent: Evented) {\n super();\n this.id = id;\n this.dispatcher = dispatcher;\n\n this.type = 'vector';\n this.minzoom = 0;\n this.maxzoom = 22;\n this.scheme = 'xyz';\n this.tileSize = 512;\n this.reparseOverscaled = true;\n this.isTileClipped = true;\n this._loaded = false;\n\n extend(this, pick(options, ['url', 'scheme', 'tileSize', 'promoteId']));\n this._options = extend({type: 'vector'}, options);\n\n this._collectResourceTiming = options.collectResourceTiming;\n\n if (this.tileSize !== 512) {\n throw new Error('vector tile sources must have a tileSize of 512');\n }\n\n this.setEventedParent(eventedParent);\n }\n\n load() {\n this._loaded = false;\n this.fire(new Event('dataloading', {dataType: 'source'}));\n this._tileJSONRequest = loadTileJSON(this._options, this.map._requestManager, (err, tileJSON) => {\n this._tileJSONRequest = null;\n this._loaded = true;\n if (err) {\n this.fire(new ErrorEvent(err));\n } else if (tileJSON) {\n extend(this, tileJSON);\n if (tileJSON.bounds) this.tileBounds = new TileBounds(tileJSON.bounds, this.minzoom, this.maxzoom);\n postTurnstileEvent(tileJSON.tiles, this.map._requestManager._customAccessToken);\n postMapLoadEvent(tileJSON.tiles, this.map._getMapId(), this.map._requestManager._skuToken, this.map._requestManager._customAccessToken);\n\n // `content` is included here to prevent a race condition where `Style#_updateSources` is called\n // before the TileJSON arrives. this makes sure the tiles needed are loaded once TileJSON arrives\n // ref: https://github.com/mapbox/mapbox-gl-js/pull/4347#discussion_r104418088\n this.fire(new Event('data', {dataType: 'source', sourceDataType: 'metadata'}));\n this.fire(new Event('data', {dataType: 'source', sourceDataType: 'content'}));\n }\n });\n }\n\n loaded(): boolean {\n return this._loaded;\n }\n\n hasTile(tileID: OverscaledTileID) {\n return !this.tileBounds || this.tileBounds.contains(tileID.canonical);\n }\n\n onAdd(map: Map) {\n this.map = map;\n this.load();\n }\n\n setSourceProperty(callback: Function) {\n if (this._tileJSONRequest) {\n this._tileJSONRequest.cancel();\n }\n\n callback();\n\n const sourceCache = this.map.style.sourceCaches[this.id];\n sourceCache.clearTiles();\n this.load();\n }\n\n /**\n * Sets the source `tiles` property and re-renders the map.\n *\n * @param {string[]} tiles An array of one or more tile source URLs, as in the TileJSON spec.\n * @returns {VectorTileSource} this\n */\n setTiles(tiles: Array) {\n this.setSourceProperty(() => {\n this._options.tiles = tiles;\n });\n\n return this;\n }\n\n /**\n * Sets the source `url` property and re-renders the map.\n *\n * @param {string} url A URL to a TileJSON resource. Supported protocols are `http:`, `https:`, and `mapbox://`.\n * @returns {VectorTileSource} this\n */\n setUrl(url: string) {\n this.setSourceProperty(() => {\n this.url = url;\n this._options.url = url;\n });\n\n return this;\n }\n\n onRemove() {\n if (this._tileJSONRequest) {\n this._tileJSONRequest.cancel();\n this._tileJSONRequest = null;\n }\n }\n\n serialize() {\n return extend({}, this._options);\n }\n\n loadTile(tile: Tile, callback: Callback) {\n const url = this.map._requestManager.normalizeTileURL(tile.tileID.canonical.url(this.tiles, this.scheme));\n const params = {\n request: this.map._requestManager.transformRequest(url, ResourceType.Tile),\n uid: tile.uid,\n tileID: tile.tileID,\n zoom: tile.tileID.overscaledZ,\n tileSize: this.tileSize * tile.tileID.overscaleFactor(),\n type: this.type,\n source: this.id,\n pixelRatio: browser.devicePixelRatio,\n showCollisionBoxes: this.map.showCollisionBoxes,\n promoteId: this.promoteId\n };\n params.request.collectResourceTiming = this._collectResourceTiming;\n\n if (!tile.actor || tile.state === 'expired') {\n tile.actor = this.dispatcher.getActor();\n tile.request = tile.actor.send('loadTile', params, done.bind(this));\n } else if (tile.state === 'loading') {\n // schedule tile reloading after it has been loaded\n tile.reloadCallback = callback;\n } else {\n tile.request = tile.actor.send('reloadTile', params, done.bind(this));\n }\n\n function done(err, data) {\n delete tile.request;\n\n if (tile.aborted)\n return callback(null);\n\n if (err && err.status !== 404) {\n return callback(err);\n }\n\n if (data && data.resourceTiming)\n tile.resourceTiming = data.resourceTiming;\n\n if (this.map._refreshExpiredTiles && data) tile.setExpiryData(data);\n tile.loadVectorData(data, this.map.painter);\n\n cacheEntryPossiblyAdded(this.dispatcher);\n\n callback(null);\n\n if (tile.reloadCallback) {\n this.loadTile(tile, tile.reloadCallback);\n tile.reloadCallback = null;\n }\n }\n }\n\n abortTile(tile: Tile) {\n if (tile.request) {\n tile.request.cancel();\n delete tile.request;\n }\n if (tile.actor) {\n tile.actor.send('abortTile', {uid: tile.uid, type: this.type, source: this.id}, undefined);\n }\n }\n\n unloadTile(tile: Tile) {\n tile.unloadVectorData();\n if (tile.actor) {\n tile.actor.send('removeTile', {uid: tile.uid, type: this.type, source: this.id}, undefined);\n }\n }\n\n hasTransition() {\n return false;\n }\n}\n\nexport default VectorTileSource;\n", "// @flow\n\nimport {extend, pick} from '../util/util';\n\nimport {getImage, ResourceType} from '../util/ajax';\nimport {Event, ErrorEvent, Evented} from '../util/evented';\nimport loadTileJSON from './load_tilejson';\nimport {postTurnstileEvent, postMapLoadEvent} from '../util/mapbox';\nimport TileBounds from './tile_bounds';\nimport Texture from '../render/texture';\n\nimport {cacheEntryPossiblyAdded} from '../util/tile_request_cache';\n\nimport type {Source} from './source';\nimport type {OverscaledTileID} from './tile_id';\nimport type Map from '../ui/map';\nimport type Dispatcher from '../util/dispatcher';\nimport type Tile from './tile';\nimport type {Callback} from '../types/callback';\nimport type {Cancelable} from '../types/cancelable';\nimport type {\n RasterSourceSpecification,\n RasterDEMSourceSpecification\n} from '../style-spec/types';\n\nclass RasterTileSource extends Evented implements Source {\n type: 'raster' | 'raster-dem';\n id: string;\n minzoom: number;\n maxzoom: number;\n url: string;\n scheme: string;\n tileSize: number;\n\n bounds: ?[number, number, number, number];\n tileBounds: TileBounds;\n roundZoom: boolean;\n dispatcher: Dispatcher;\n map: Map;\n tiles: Array;\n\n _loaded: boolean;\n _options: RasterSourceSpecification | RasterDEMSourceSpecification;\n _tileJSONRequest: ?Cancelable;\n\n constructor(id: string, options: RasterSourceSpecification | RasterDEMSourceSpecification, dispatcher: Dispatcher, eventedParent: Evented) {\n super();\n this.id = id;\n this.dispatcher = dispatcher;\n this.setEventedParent(eventedParent);\n\n this.type = 'raster';\n this.minzoom = 0;\n this.maxzoom = 22;\n this.roundZoom = true;\n this.scheme = 'xyz';\n this.tileSize = 512;\n this._loaded = false;\n\n this._options = extend({type: 'raster'}, options);\n extend(this, pick(options, ['url', 'scheme', 'tileSize']));\n }\n\n load() {\n this._loaded = false;\n this.fire(new Event('dataloading', {dataType: 'source'}));\n this._tileJSONRequest = loadTileJSON(this._options, this.map._requestManager, (err, tileJSON) => {\n this._tileJSONRequest = null;\n this._loaded = true;\n if (err) {\n this.fire(new ErrorEvent(err));\n } else if (tileJSON) {\n extend(this, tileJSON);\n if (tileJSON.bounds) this.tileBounds = new TileBounds(tileJSON.bounds, this.minzoom, this.maxzoom);\n\n postTurnstileEvent(tileJSON.tiles);\n postMapLoadEvent(tileJSON.tiles, this.map._getMapId(), this.map._requestManager._skuToken);\n\n // `content` is included here to prevent a race condition where `Style#_updateSources` is called\n // before the TileJSON arrives. this makes sure the tiles needed are loaded once TileJSON arrives\n // ref: https://github.com/mapbox/mapbox-gl-js/pull/4347#discussion_r104418088\n this.fire(new Event('data', {dataType: 'source', sourceDataType: 'metadata'}));\n this.fire(new Event('data', {dataType: 'source', sourceDataType: 'content'}));\n }\n });\n }\n\n loaded(): boolean {\n return this._loaded;\n }\n\n onAdd(map: Map) {\n this.map = map;\n this.load();\n }\n\n onRemove() {\n if (this._tileJSONRequest) {\n this._tileJSONRequest.cancel();\n this._tileJSONRequest = null;\n }\n }\n\n serialize() {\n return extend({}, this._options);\n }\n\n hasTile(tileID: OverscaledTileID) {\n return !this.tileBounds || this.tileBounds.contains(tileID.canonical);\n }\n\n loadTile(tile: Tile, callback: Callback) {\n const url = this.map._requestManager.normalizeTileURL(tile.tileID.canonical.url(this.tiles, this.scheme), this.tileSize);\n tile.request = getImage(this.map._requestManager.transformRequest(url, ResourceType.Tile), (err, img) => {\n delete tile.request;\n\n if (tile.aborted) {\n tile.state = 'unloaded';\n callback(null);\n } else if (err) {\n tile.state = 'errored';\n callback(err);\n } else if (img) {\n if (this.map._refreshExpiredTiles) tile.setExpiryData(img);\n delete (img: any).cacheControl;\n delete (img: any).expires;\n\n const context = this.map.painter.context;\n const gl = context.gl;\n tile.texture = this.map.painter.getTileTexture(img.width);\n if (tile.texture) {\n tile.texture.update(img, {useMipmap: true});\n } else {\n tile.texture = new Texture(context, img, gl.RGBA, {useMipmap: true});\n tile.texture.bind(gl.LINEAR, gl.CLAMP_TO_EDGE, gl.LINEAR_MIPMAP_NEAREST);\n\n if (context.extTextureFilterAnisotropic) {\n gl.texParameterf(gl.TEXTURE_2D, context.extTextureFilterAnisotropic.TEXTURE_MAX_ANISOTROPY_EXT, context.extTextureFilterAnisotropicMax);\n }\n }\n\n tile.state = 'loaded';\n\n cacheEntryPossiblyAdded(this.dispatcher);\n\n callback(null);\n }\n });\n }\n\n abortTile(tile: Tile, callback: Callback) {\n if (tile.request) {\n tile.request.cancel();\n delete tile.request;\n }\n callback();\n }\n\n unloadTile(tile: Tile, callback: Callback) {\n if (tile.texture) this.map.painter.saveTileTexture(tile.texture);\n callback();\n }\n\n hasTransition() {\n return false;\n }\n}\n\nexport default RasterTileSource;\n", "// @flow\n\nimport {getImage, ResourceType} from '../util/ajax';\nimport {extend} from '../util/util';\nimport {Evented} from '../util/evented';\nimport browser from '../util/browser';\nimport window from '../util/window';\nimport offscreenCanvasSupported from '../util/offscreen_canvas_supported';\nimport {OverscaledTileID} from './tile_id';\nimport RasterTileSource from './raster_tile_source';\n// ensure DEMData is registered for worker transfer on main thread:\nimport '../data/dem_data';\n\nimport type {Source} from './source';\nimport type Dispatcher from '../util/dispatcher';\nimport type Tile from './tile';\nimport type {Callback} from '../types/callback';\nimport type {RasterDEMSourceSpecification} from '../style-spec/types';\n\nclass RasterDEMTileSource extends RasterTileSource implements Source {\n encoding: \"mapbox\" | \"terrarium\";\n\n constructor(id: string, options: RasterDEMSourceSpecification, dispatcher: Dispatcher, eventedParent: Evented) {\n super(id, options, dispatcher, eventedParent);\n this.type = 'raster-dem';\n this.maxzoom = 22;\n this._options = extend({type: 'raster-dem'}, options);\n this.encoding = options.encoding || \"mapbox\";\n }\n\n serialize() {\n return {\n type: 'raster-dem',\n url: this.url,\n tileSize: this.tileSize,\n tiles: this.tiles,\n bounds: this.bounds,\n encoding: this.encoding\n };\n }\n\n loadTile(tile: Tile, callback: Callback) {\n const url = this.map._requestManager.normalizeTileURL(tile.tileID.canonical.url(this.tiles, this.scheme), this.tileSize);\n tile.request = getImage(this.map._requestManager.transformRequest(url, ResourceType.Tile), imageLoaded.bind(this));\n\n tile.neighboringTiles = this._getNeighboringTiles(tile.tileID);\n function imageLoaded(err, img) {\n delete tile.request;\n if (tile.aborted) {\n tile.state = 'unloaded';\n callback(null);\n } else if (err) {\n tile.state = 'errored';\n callback(err);\n } else if (img) {\n if (this.map._refreshExpiredTiles) tile.setExpiryData(img);\n delete (img: any).cacheControl;\n delete (img: any).expires;\n const transfer = window.ImageBitmap && img instanceof window.ImageBitmap && offscreenCanvasSupported();\n const rawImageData = transfer ? img : browser.getImageData(img, 1);\n const params = {\n uid: tile.uid,\n coord: tile.tileID,\n source: this.id,\n rawImageData,\n encoding: this.encoding\n };\n\n if (!tile.actor || tile.state === 'expired') {\n tile.actor = this.dispatcher.getActor();\n tile.actor.send('loadDEMTile', params, done.bind(this));\n }\n }\n }\n\n function done(err, dem) {\n if (err) {\n tile.state = 'errored';\n callback(err);\n }\n\n if (dem) {\n tile.dem = dem;\n tile.needsHillshadePrepare = true;\n tile.state = 'loaded';\n callback(null);\n }\n }\n }\n\n _getNeighboringTiles(tileID: OverscaledTileID) {\n const canonical = tileID.canonical;\n const dim = Math.pow(2, canonical.z);\n\n const px = (canonical.x - 1 + dim) % dim;\n const pxw = canonical.x === 0 ? tileID.wrap - 1 : tileID.wrap;\n const nx = (canonical.x + 1 + dim) % dim;\n const nxw = canonical.x + 1 === dim ? tileID.wrap + 1 : tileID.wrap;\n\n const neighboringTiles = {};\n // add adjacent tiles\n neighboringTiles[new OverscaledTileID(tileID.overscaledZ, pxw, canonical.z, px, canonical.y).key] = {backfilled: false};\n neighboringTiles[new OverscaledTileID(tileID.overscaledZ, nxw, canonical.z, nx, canonical.y).key] = {backfilled: false};\n\n // Add upper neighboringTiles\n if (canonical.y > 0) {\n neighboringTiles[new OverscaledTileID(tileID.overscaledZ, pxw, canonical.z, px, canonical.y - 1).key] = {backfilled: false};\n neighboringTiles[new OverscaledTileID(tileID.overscaledZ, tileID.wrap, canonical.z, canonical.x, canonical.y - 1).key] = {backfilled: false};\n neighboringTiles[new OverscaledTileID(tileID.overscaledZ, nxw, canonical.z, nx, canonical.y - 1).key] = {backfilled: false};\n }\n // Add lower neighboringTiles\n if (canonical.y + 1 < dim) {\n neighboringTiles[new OverscaledTileID(tileID.overscaledZ, pxw, canonical.z, px, canonical.y + 1).key] = {backfilled: false};\n neighboringTiles[new OverscaledTileID(tileID.overscaledZ, tileID.wrap, canonical.z, canonical.x, canonical.y + 1).key] = {backfilled: false};\n neighboringTiles[new OverscaledTileID(tileID.overscaledZ, nxw, canonical.z, nx, canonical.y + 1).key] = {backfilled: false};\n }\n\n return neighboringTiles;\n }\n\n unloadTile(tile: Tile) {\n if (tile.demTexture) this.map.painter.saveTileTexture(tile.demTexture);\n if (tile.fbo) {\n tile.fbo.destroy();\n delete tile.fbo;\n }\n if (tile.dem) delete tile.dem;\n delete tile.neighboringTiles;\n\n tile.state = 'unloaded';\n if (tile.actor) {\n tile.actor.send('removeDEMTile', {uid: tile.uid, source: this.id});\n }\n }\n\n}\n\nexport default RasterDEMTileSource;\n", "// @flow\n\nimport {Event, ErrorEvent, Evented} from '../util/evented';\n\nimport {extend} from '../util/util';\nimport EXTENT from '../data/extent';\nimport {ResourceType} from '../util/ajax';\nimport browser from '../util/browser';\n\nimport type {Source} from './source';\nimport type Map from '../ui/map';\nimport type Dispatcher from '../util/dispatcher';\nimport type Tile from './tile';\nimport type Actor from '../util/actor';\nimport type {Callback} from '../types/callback';\nimport type {GeoJSON, GeoJSONFeature} from '@mapbox/geojson-types';\nimport type {GeoJSONSourceSpecification, PromoteIdSpecification} from '../style-spec/types';\n\n/**\n * A source containing GeoJSON.\n * (See the [Style Specification](https://www.mapbox.com/mapbox-gl-style-spec/#sources-geojson) for detailed documentation of options.)\n *\n * @example\n * map.addSource('some id', {\n * type: 'geojson',\n * data: 'https://d2ad6b4ur7yvpq.cloudfront.net/naturalearth-3.3.0/ne_10m_ports.geojson'\n * });\n *\n * @example\n * map.addSource('some id', {\n * type: 'geojson',\n * data: {\n * \"type\": \"FeatureCollection\",\n * \"features\": [{\n * \"type\": \"Feature\",\n * \"properties\": {},\n * \"geometry\": {\n * \"type\": \"Point\",\n * \"coordinates\": [\n * -76.53063297271729,\n * 39.18174077994108\n * ]\n * }\n * }]\n * }\n * });\n *\n * @example\n * map.getSource('some id').setData({\n * \"type\": \"FeatureCollection\",\n * \"features\": [{\n * \"type\": \"Feature\",\n * \"properties\": { \"name\": \"Null Island\" },\n * \"geometry\": {\n * \"type\": \"Point\",\n * \"coordinates\": [ 0, 0 ]\n * }\n * }]\n * });\n * @see [Draw GeoJSON points](https://www.mapbox.com/mapbox-gl-js/example/geojson-markers/)\n * @see [Add a GeoJSON line](https://www.mapbox.com/mapbox-gl-js/example/geojson-line/)\n * @see [Create a heatmap from points](https://www.mapbox.com/mapbox-gl-js/example/heatmap/)\n * @see [Create and style clusters](https://www.mapbox.com/mapbox-gl-js/example/cluster/)\n */\nclass GeoJSONSource extends Evented implements Source {\n type: 'geojson';\n id: string;\n minzoom: number;\n maxzoom: number;\n tileSize: number;\n attribution: string;\n promoteId: ?PromoteIdSpecification;\n\n isTileClipped: boolean;\n reparseOverscaled: boolean;\n _data: GeoJSON | string;\n _options: any;\n workerOptions: any;\n map: Map;\n actor: Actor;\n _loaded: boolean;\n _collectResourceTiming: boolean;\n _resourceTiming: Array;\n _removed: boolean;\n\n /**\n * @private\n */\n constructor(id: string, options: GeoJSONSourceSpecification & {workerOptions?: any, collectResourceTiming: boolean}, dispatcher: Dispatcher, eventedParent: Evented) {\n super();\n\n this.id = id;\n\n // `type` is a property rather than a constant to make it easy for 3rd\n // parties to use GeoJSONSource to build their own source types.\n this.type = 'geojson';\n\n this.minzoom = 0;\n this.maxzoom = 18;\n this.tileSize = 512;\n this.isTileClipped = true;\n this.reparseOverscaled = true;\n this._removed = false;\n this._loaded = false;\n\n this.actor = dispatcher.getActor();\n this.setEventedParent(eventedParent);\n\n this._data = (options.data: any);\n this._options = extend({}, options);\n\n this._collectResourceTiming = options.collectResourceTiming;\n this._resourceTiming = [];\n\n if (options.maxzoom !== undefined) this.maxzoom = options.maxzoom;\n if (options.type) this.type = options.type;\n if (options.attribution) this.attribution = options.attribution;\n this.promoteId = options.promoteId;\n\n const scale = EXTENT / this.tileSize;\n\n // sent to the worker, along with `url: ...` or `data: literal geojson`,\n // so that it can load/parse/index the geojson data\n // extending with `options.workerOptions` helps to make it easy for\n // third-party sources to hack/reuse GeoJSONSource.\n this.workerOptions = extend({\n source: this.id,\n cluster: options.cluster || false,\n geojsonVtOptions: {\n buffer: (options.buffer !== undefined ? options.buffer : 128) * scale,\n tolerance: (options.tolerance !== undefined ? options.tolerance : 0.375) * scale,\n extent: EXTENT,\n maxZoom: this.maxzoom,\n lineMetrics: options.lineMetrics || false,\n generateId: options.generateId || false\n },\n superclusterOptions: {\n maxZoom: options.clusterMaxZoom !== undefined ?\n Math.min(options.clusterMaxZoom, this.maxzoom - 1) :\n (this.maxzoom - 1),\n minPoints: Math.max(2, options.clusterMinPoints || 2),\n extent: EXTENT,\n radius: (options.clusterRadius || 50) * scale,\n log: false,\n generateId: options.generateId || false\n },\n clusterProperties: options.clusterProperties,\n filter: options.filter\n }, options.workerOptions);\n }\n\n load() {\n this.fire(new Event('dataloading', {dataType: 'source'}));\n this._updateWorkerData((err) => {\n if (err) {\n this.fire(new ErrorEvent(err));\n return;\n }\n\n const data: Object = {dataType: 'source', sourceDataType: 'metadata'};\n if (this._collectResourceTiming && this._resourceTiming && (this._resourceTiming.length > 0)) {\n data.resourceTiming = this._resourceTiming;\n this._resourceTiming = [];\n }\n\n // although GeoJSON sources contain no metadata, we fire this event to let the SourceCache\n // know its ok to start requesting tiles.\n this.fire(new Event('data', data));\n });\n }\n\n onAdd(map: Map) {\n this.map = map;\n this.load();\n }\n\n /**\n * Sets the GeoJSON data and re-renders the map.\n *\n * @param {Object|string} data A GeoJSON data object or a URL to one. The latter is preferable in the case of large GeoJSON files.\n * @returns {GeoJSONSource} this\n */\n setData(data: GeoJSON | string) {\n this._data = data;\n this.fire(new Event('dataloading', {dataType: 'source'}));\n this._updateWorkerData((err) => {\n if (err) {\n this.fire(new ErrorEvent(err));\n return;\n }\n\n const data: Object = {dataType: 'source', sourceDataType: 'content'};\n if (this._collectResourceTiming && this._resourceTiming && (this._resourceTiming.length > 0)) {\n data.resourceTiming = this._resourceTiming;\n this._resourceTiming = [];\n }\n this.fire(new Event('data', data));\n });\n\n return this;\n }\n\n /**\n * For clustered sources, fetches the zoom at which the given cluster expands.\n *\n * @param clusterId The value of the cluster's `cluster_id` property.\n * @param callback A callback to be called when the zoom value is retrieved (`(error, zoom) => { ... }`).\n * @returns {GeoJSONSource} this\n */\n getClusterExpansionZoom(clusterId: number, callback: Callback) {\n this.actor.send('geojson.getClusterExpansionZoom', {clusterId, source: this.id}, callback);\n return this;\n }\n\n /**\n * For clustered sources, fetches the children of the given cluster on the next zoom level (as an array of GeoJSON features).\n *\n * @param clusterId The value of the cluster's `cluster_id` property.\n * @param callback A callback to be called when the features are retrieved (`(error, features) => { ... }`).\n * @returns {GeoJSONSource} this\n */\n getClusterChildren(clusterId: number, callback: Callback>) {\n this.actor.send('geojson.getClusterChildren', {clusterId, source: this.id}, callback);\n return this;\n }\n\n /**\n * For clustered sources, fetches the original points that belong to the cluster (as an array of GeoJSON features).\n *\n * @param clusterId The value of the cluster's `cluster_id` property.\n * @param limit The maximum number of features to return.\n * @param offset The number of features to skip (e.g. for pagination).\n * @param callback A callback to be called when the features are retrieved (`(error, features) => { ... }`).\n * @returns {GeoJSONSource} this\n * @example\n * // Retrieve cluster leaves on click\n * map.on('click', 'clusters', function(e) {\n * var features = map.queryRenderedFeatures(e.point, {\n * layers: ['clusters']\n * });\n *\n * var clusterId = features[0].properties.cluster_id;\n * var pointCount = features[0].properties.point_count;\n * var clusterSource = map.getSource('clusters');\n *\n * clusterSource.getClusterLeaves(clusterId, pointCount, 0, function(error, features) {\n * // Print cluster leaves in the console\n * console.log('Cluster leaves:', error, features);\n * })\n * });\n */\n getClusterLeaves(clusterId: number, limit: number, offset: number, callback: Callback>) {\n this.actor.send('geojson.getClusterLeaves', {\n source: this.id,\n clusterId,\n limit,\n offset\n }, callback);\n return this;\n }\n\n /*\n * Responsible for invoking WorkerSource's geojson.loadData target, which\n * handles loading the geojson data and preparing to serve it up as tiles,\n * using geojson-vt or supercluster as appropriate.\n */\n _updateWorkerData(callback: Callback) {\n this._loaded = false;\n const options = extend({}, this.workerOptions);\n const data = this._data;\n if (typeof data === 'string') {\n options.request = this.map._requestManager.transformRequest(browser.resolveURL(data), ResourceType.Source);\n options.request.collectResourceTiming = this._collectResourceTiming;\n } else {\n options.data = JSON.stringify(data);\n }\n\n // target {this.type}.loadData rather than literally geojson.loadData,\n // so that other geojson-like source types can easily reuse this\n // implementation\n this.actor.send(`${this.type}.loadData`, options, (err, result) => {\n if (this._removed || (result && result.abandoned)) {\n return;\n }\n\n this._loaded = true;\n\n if (result && result.resourceTiming && result.resourceTiming[this.id])\n this._resourceTiming = result.resourceTiming[this.id].slice(0);\n // Any `loadData` calls that piled up while we were processing\n // this one will get coalesced into a single call when this\n // 'coalesce' message is processed.\n // We would self-send from the worker if we had access to its\n // message queue. Waiting instead for the 'coalesce' to round-trip\n // through the foreground just means we're throttling the worker\n // to run at a little less than full-throttle.\n this.actor.send(`${this.type}.coalesce`, {source: options.source}, null);\n callback(err);\n });\n }\n\n loaded(): boolean {\n return this._loaded;\n }\n\n loadTile(tile: Tile, callback: Callback) {\n const message = !tile.actor ? 'loadTile' : 'reloadTile';\n tile.actor = this.actor;\n const params = {\n type: this.type,\n uid: tile.uid,\n tileID: tile.tileID,\n zoom: tile.tileID.overscaledZ,\n maxZoom: this.maxzoom,\n tileSize: this.tileSize,\n source: this.id,\n pixelRatio: browser.devicePixelRatio,\n showCollisionBoxes: this.map.showCollisionBoxes,\n promoteId: this.promoteId\n };\n\n tile.request = this.actor.send(message, params, (err, data) => {\n delete tile.request;\n tile.unloadVectorData();\n\n if (tile.aborted) {\n return callback(null);\n }\n\n if (err) {\n return callback(err);\n }\n\n tile.loadVectorData(data, this.map.painter, message === 'reloadTile');\n\n return callback(null);\n });\n }\n\n abortTile(tile: Tile) {\n if (tile.request) {\n tile.request.cancel();\n delete tile.request;\n }\n tile.aborted = true;\n }\n\n unloadTile(tile: Tile) {\n tile.unloadVectorData();\n this.actor.send('removeTile', {uid: tile.uid, type: this.type, source: this.id});\n }\n\n onRemove() {\n this._removed = true;\n this.actor.send('removeSource', {type: this.type, source: this.id});\n }\n\n serialize() {\n return extend({}, this._options, {\n type: this.type,\n data: this._data\n });\n }\n\n hasTransition() {\n return false;\n }\n}\n\nexport default GeoJSONSource;\n", "// @flow\n\nimport {CanonicalTileID} from './tile_id';\nimport {Event, ErrorEvent, Evented} from '../util/evented';\nimport {getImage, ResourceType} from '../util/ajax';\nimport EXTENT from '../data/extent';\nimport {RasterBoundsArray} from '../data/array_types';\nimport rasterBoundsAttributes from '../data/raster_bounds_attributes';\nimport SegmentVector from '../data/segment';\nimport Texture from '../render/texture';\nimport MercatorCoordinate from '../geo/mercator_coordinate';\n\nimport type {Source} from './source';\nimport type {CanvasSourceSpecification} from './canvas_source';\nimport type Map from '../ui/map';\nimport type Dispatcher from '../util/dispatcher';\nimport type Tile from './tile';\nimport type {Callback} from '../types/callback';\nimport type VertexBuffer from '../gl/vertex_buffer';\nimport type {\n ImageSourceSpecification,\n VideoSourceSpecification\n} from '../style-spec/types';\n\ntype Coordinates = [[number, number], [number, number], [number, number], [number, number]];\n\n/**\n * A data source containing an image.\n * (See the [Style Specification](https://www.mapbox.com/mapbox-gl-style-spec/#sources-image) for detailed documentation of options.)\n *\n * @example\n * // add to map\n * map.addSource('some id', {\n * type: 'image',\n * url: 'https://www.mapbox.com/images/foo.png',\n * coordinates: [\n * [-76.54, 39.18],\n * [-76.52, 39.18],\n * [-76.52, 39.17],\n * [-76.54, 39.17]\n * ]\n * });\n *\n * // update coordinates\n * var mySource = map.getSource('some id');\n * mySource.setCoordinates([\n * [-76.54335737228394, 39.18579907229748],\n * [-76.52803659439087, 39.1838364847587],\n * [-76.5295386314392, 39.17683392507606],\n * [-76.54520273208618, 39.17876344106642]\n * ]);\n *\n * // update url and coordinates simultaneously\n * mySource.updateImage({\n * url: 'https://www.mapbox.com/images/bar.png',\n * coordinates: [\n * [-76.54335737228394, 39.18579907229748],\n * [-76.52803659439087, 39.1838364847587],\n * [-76.5295386314392, 39.17683392507606],\n * [-76.54520273208618, 39.17876344106642]\n * ]\n * })\n *\n * map.removeSource('some id'); // remove\n * @see [Add an image](https://www.mapbox.com/mapbox-gl-js/example/image-on-a-map/)\n */\nclass ImageSource extends Evented implements Source {\n type: string;\n id: string;\n minzoom: number;\n maxzoom: number;\n tileSize: number;\n url: string;\n\n coordinates: Coordinates;\n tiles: {[_: string]: Tile};\n options: any;\n dispatcher: Dispatcher;\n map: Map;\n texture: Texture | null;\n image: HTMLImageElement | ImageBitmap;\n tileID: CanonicalTileID;\n _boundsArray: RasterBoundsArray;\n boundsBuffer: VertexBuffer;\n boundsSegments: SegmentVector;\n _loaded: boolean;\n\n /**\n * @private\n */\n constructor(id: string, options: ImageSourceSpecification | VideoSourceSpecification | CanvasSourceSpecification, dispatcher: Dispatcher, eventedParent: Evented) {\n super();\n this.id = id;\n this.dispatcher = dispatcher;\n this.coordinates = options.coordinates;\n\n this.type = 'image';\n this.minzoom = 0;\n this.maxzoom = 22;\n this.tileSize = 512;\n this.tiles = {};\n this._loaded = false;\n\n this.setEventedParent(eventedParent);\n\n this.options = options;\n }\n\n load(newCoordinates?: Coordinates, successCallback?: () => void) {\n this._loaded = false;\n this.fire(new Event('dataloading', {dataType: 'source'}));\n\n this.url = this.options.url;\n\n getImage(this.map._requestManager.transformRequest(this.url, ResourceType.Image), (err, image) => {\n this._loaded = true;\n if (err) {\n this.fire(new ErrorEvent(err));\n } else if (image) {\n this.image = image;\n if (newCoordinates) {\n this.coordinates = newCoordinates;\n }\n if (successCallback) {\n successCallback();\n }\n this._finishLoading();\n }\n });\n }\n\n loaded(): boolean {\n return this._loaded;\n }\n\n /**\n * Updates the image URL and, optionally, the coordinates. To avoid having the image flash after changing,\n * set the `raster-fade-duration` paint property on the raster layer to 0.\n *\n * @param {Object} options Options object.\n * @param {string} [options.url] Required image URL.\n * @param {Array>} [options.coordinates] Four geographical coordinates,\n * represented as arrays of longitude and latitude numbers, which define the corners of the image.\n * The coordinates start at the top left corner of the image and proceed in clockwise order.\n * They do not have to represent a rectangle.\n * @returns {ImageSource} this\n */\n updateImage(options: {url: string, coordinates?: Coordinates}) {\n if (!this.image || !options.url) {\n return this;\n }\n this.options.url = options.url;\n this.load(options.coordinates, () => { this.texture = null; });\n return this;\n }\n\n _finishLoading() {\n if (this.map) {\n this.setCoordinates(this.coordinates);\n this.fire(new Event('data', {dataType: 'source', sourceDataType: 'metadata'}));\n }\n }\n\n onAdd(map: Map) {\n this.map = map;\n this.load();\n }\n\n /**\n * Sets the image's coordinates and re-renders the map.\n *\n * @param {Array>} coordinates Four geographical coordinates,\n * represented as arrays of longitude and latitude numbers, which define the corners of the image.\n * The coordinates start at the top left corner of the image and proceed in clockwise order.\n * They do not have to represent a rectangle.\n * @returns {ImageSource} this\n */\n setCoordinates(coordinates: Coordinates) {\n this.coordinates = coordinates;\n\n // Calculate which mercator tile is suitable for rendering the video in\n // and create a buffer with the corner coordinates. These coordinates\n // may be outside the tile, because raster tiles aren't clipped when rendering.\n\n // transform the geo coordinates into (zoom 0) tile space coordinates\n const cornerCoords = coordinates.map(MercatorCoordinate.fromLngLat);\n\n // Compute the coordinates of the tile we'll use to hold this image's\n // render data\n this.tileID = getCoordinatesCenterTileID(cornerCoords);\n\n // Constrain min/max zoom to our tile's zoom level in order to force\n // SourceCache to request this tile (no matter what the map's zoom\n // level)\n this.minzoom = this.maxzoom = this.tileID.z;\n\n // Transform the corner coordinates into the coordinate space of our\n // tile.\n const tileCoords = cornerCoords.map((coord) => this.tileID.getTilePoint(coord)._round());\n\n this._boundsArray = new RasterBoundsArray();\n this._boundsArray.emplaceBack(tileCoords[0].x, tileCoords[0].y, 0, 0);\n this._boundsArray.emplaceBack(tileCoords[1].x, tileCoords[1].y, EXTENT, 0);\n this._boundsArray.emplaceBack(tileCoords[3].x, tileCoords[3].y, 0, EXTENT);\n this._boundsArray.emplaceBack(tileCoords[2].x, tileCoords[2].y, EXTENT, EXTENT);\n\n if (this.boundsBuffer) {\n this.boundsBuffer.destroy();\n delete this.boundsBuffer;\n }\n\n this.fire(new Event('data', {dataType:'source', sourceDataType: 'content'}));\n return this;\n }\n\n prepare() {\n if (Object.keys(this.tiles).length === 0 || !this.image) {\n return;\n }\n\n const context = this.map.painter.context;\n const gl = context.gl;\n\n if (!this.boundsBuffer) {\n this.boundsBuffer = context.createVertexBuffer(this._boundsArray, rasterBoundsAttributes.members);\n }\n\n if (!this.boundsSegments) {\n this.boundsSegments = SegmentVector.simpleSegment(0, 0, 4, 2);\n }\n\n if (!this.texture) {\n this.texture = new Texture(context, this.image, gl.RGBA);\n this.texture.bind(gl.LINEAR, gl.CLAMP_TO_EDGE);\n }\n\n for (const w in this.tiles) {\n const tile = this.tiles[w];\n if (tile.state !== 'loaded') {\n tile.state = 'loaded';\n tile.texture = this.texture;\n }\n }\n }\n\n loadTile(tile: Tile, callback: Callback) {\n // We have a single tile -- whoose coordinates are this.tileID -- that\n // covers the image we want to render. If that's the one being\n // requested, set it up with the image; otherwise, mark the tile as\n // `errored` to indicate that we have no data for it.\n // If the world wraps, we may have multiple \"wrapped\" copies of the\n // single tile.\n if (this.tileID && this.tileID.equals(tile.tileID.canonical)) {\n this.tiles[String(tile.tileID.wrap)] = tile;\n tile.buckets = {};\n callback(null);\n } else {\n tile.state = 'errored';\n callback(null);\n }\n }\n\n serialize(): Object {\n return {\n type: 'image',\n url: this.options.url,\n coordinates: this.coordinates\n };\n }\n\n hasTransition() {\n return false;\n }\n}\n\n/**\n * Given a list of coordinates, get their center as a coordinate.\n *\n * @returns centerpoint\n * @private\n */\nexport function getCoordinatesCenterTileID(coords: Array) {\n let minX = Infinity;\n let minY = Infinity;\n let maxX = -Infinity;\n let maxY = -Infinity;\n\n for (const coord of coords) {\n minX = Math.min(minX, coord.x);\n minY = Math.min(minY, coord.y);\n maxX = Math.max(maxX, coord.x);\n maxY = Math.max(maxY, coord.y);\n }\n\n const dx = maxX - minX;\n const dy = maxY - minY;\n const dMax = Math.max(dx, dy);\n const zoom = Math.max(0, Math.floor(-Math.log(dMax) / Math.LN2));\n const tilesAtZoom = Math.pow(2, zoom);\n\n return new CanonicalTileID(\n zoom,\n Math.floor((minX + maxX) / 2 * tilesAtZoom),\n Math.floor((minY + maxY) / 2 * tilesAtZoom));\n}\n\nexport default ImageSource;\n", "// @flow\n\nimport {getVideo, ResourceType} from '../util/ajax';\n\nimport ImageSource from './image_source';\nimport rasterBoundsAttributes from '../data/raster_bounds_attributes';\nimport SegmentVector from '../data/segment';\nimport Texture from '../render/texture';\nimport {ErrorEvent} from '../util/evented';\nimport ValidationError from '../style-spec/error/validation_error';\n\nimport type Map from '../ui/map';\nimport type Dispatcher from '../util/dispatcher';\nimport type {Evented} from '../util/evented';\nimport type {VideoSourceSpecification} from '../style-spec/types';\n\n/**\n * A data source containing video.\n * (See the [Style Specification](https://www.mapbox.com/mapbox-gl-style-spec/#sources-video) for detailed documentation of options.)\n *\n * @example\n * // add to map\n * map.addSource('some id', {\n * type: 'video',\n * url: [\n * 'https://www.mapbox.com/blog/assets/baltimore-smoke.mp4',\n * 'https://www.mapbox.com/blog/assets/baltimore-smoke.webm'\n * ],\n * coordinates: [\n * [-76.54, 39.18],\n * [-76.52, 39.18],\n * [-76.52, 39.17],\n * [-76.54, 39.17]\n * ]\n * });\n *\n * // update\n * var mySource = map.getSource('some id');\n * mySource.setCoordinates([\n * [-76.54335737228394, 39.18579907229748],\n * [-76.52803659439087, 39.1838364847587],\n * [-76.5295386314392, 39.17683392507606],\n * [-76.54520273208618, 39.17876344106642]\n * ]);\n *\n * map.removeSource('some id'); // remove\n * @see [Add a video](https://www.mapbox.com/mapbox-gl-js/example/video-on-a-map/)\n */\nclass VideoSource extends ImageSource {\n options: VideoSourceSpecification;\n urls: Array;\n video: HTMLVideoElement;\n roundZoom: boolean;\n\n /**\n * @private\n */\n constructor(id: string, options: VideoSourceSpecification, dispatcher: Dispatcher, eventedParent: Evented) {\n super(id, options, dispatcher, eventedParent);\n this.roundZoom = true;\n this.type = 'video';\n this.options = options;\n }\n\n load() {\n this._loaded = false;\n const options = this.options;\n\n this.urls = [];\n for (const url of options.urls) {\n this.urls.push(this.map._requestManager.transformRequest(url, ResourceType.Source).url);\n }\n\n getVideo(this.urls, (err, video) => {\n this._loaded = true;\n if (err) {\n this.fire(new ErrorEvent(err));\n } else if (video) {\n this.video = video;\n this.video.loop = true;\n\n // Prevent the video from taking over the screen in iOS\n this.video.setAttribute('playsinline', '');\n\n // Start repainting when video starts playing. hasTransition() will then return\n // true to trigger additional frames as long as the videos continues playing.\n this.video.addEventListener('playing', () => {\n this.map.triggerRepaint();\n });\n\n if (this.map) {\n this.video.play();\n }\n\n this._finishLoading();\n }\n });\n }\n\n /**\n * Pauses the video.\n */\n pause() {\n if (this.video) {\n this.video.pause();\n }\n }\n\n /**\n * Plays the video.\n */\n play() {\n if (this.video) {\n this.video.play();\n }\n }\n\n /**\n * Sets playback to a timestamp, in seconds.\n * @private\n */\n seek(seconds: number) {\n if (this.video) {\n const seekableRange = this.video.seekable;\n if (seconds < seekableRange.start(0) || seconds > seekableRange.end(0)) {\n this.fire(new ErrorEvent(new ValidationError(`sources.${this.id}`, null, `Playback for this video can be set only between the ${seekableRange.start(0)} and ${seekableRange.end(0)}-second mark.`)));\n } else this.video.currentTime = seconds;\n }\n }\n\n /**\n * Returns the HTML `video` element.\n *\n * @returns {HTMLVideoElement} The HTML `video` element.\n */\n getVideo() {\n return this.video;\n }\n\n onAdd(map: Map) {\n if (this.map) return;\n this.map = map;\n this.load();\n if (this.video) {\n this.video.play();\n this.setCoordinates(this.coordinates);\n }\n }\n\n /**\n * Sets the video's coordinates and re-renders the map.\n *\n * @method setCoordinates\n * @instance\n * @memberof VideoSource\n * @returns {VideoSource} this\n */\n // setCoordinates inherited from ImageSource\n\n prepare() {\n if (Object.keys(this.tiles).length === 0 || this.video.readyState < 2) {\n return; // not enough data for current position\n }\n\n const context = this.map.painter.context;\n const gl = context.gl;\n\n if (!this.boundsBuffer) {\n this.boundsBuffer = context.createVertexBuffer(this._boundsArray, rasterBoundsAttributes.members);\n }\n\n if (!this.boundsSegments) {\n this.boundsSegments = SegmentVector.simpleSegment(0, 0, 4, 2);\n }\n\n if (!this.texture) {\n this.texture = new Texture(context, this.video, gl.RGBA);\n this.texture.bind(gl.LINEAR, gl.CLAMP_TO_EDGE);\n } else if (!this.video.paused) {\n this.texture.bind(gl.LINEAR, gl.CLAMP_TO_EDGE);\n gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, gl.RGBA, gl.UNSIGNED_BYTE, this.video);\n }\n\n for (const w in this.tiles) {\n const tile = this.tiles[w];\n if (tile.state !== 'loaded') {\n tile.state = 'loaded';\n tile.texture = this.texture;\n }\n }\n }\n\n serialize() {\n return {\n type: 'video',\n urls: this.urls,\n coordinates: this.coordinates\n };\n }\n\n hasTransition() {\n return this.video && !this.video.paused;\n }\n}\n\nexport default VideoSource;\n", "// @flow\n\nimport ImageSource from './image_source';\n\nimport window from '../util/window';\nimport rasterBoundsAttributes from '../data/raster_bounds_attributes';\nimport SegmentVector from '../data/segment';\nimport Texture from '../render/texture';\nimport {ErrorEvent} from '../util/evented';\nimport ValidationError from '../style-spec/error/validation_error';\n\nimport type Map from '../ui/map';\nimport type Dispatcher from '../util/dispatcher';\nimport type {Evented} from '../util/evented';\n\nexport type CanvasSourceSpecification = {|\n \"type\": \"canvas\",\n \"coordinates\": [[number, number], [number, number], [number, number], [number, number]],\n \"animate\"?: boolean,\n \"canvas\": string | HTMLCanvasElement\n|};\n\n/**\n * Options to add a canvas source type to the map.\n *\n * @typedef {Object} CanvasSourceOptions\n * @property {string} type Source type. Must be `\"canvas\"`.\n * @property {string|HTMLCanvasElement} canvas Canvas source from which to read pixels. Can be a string representing the ID of the canvas element, or the `HTMLCanvasElement` itself.\n * @property {Array>} coordinates Four geographical coordinates denoting where to place the corners of the canvas, specified in `[longitude, latitude]` pairs.\n * @property {boolean} [animate=true] Whether the canvas source is animated. If the canvas is static (i.e. pixels do not need to be re-read on every frame), `animate` should be set to `false` to improve performance.\n */\n\n/**\n * A data source containing the contents of an HTML canvas. See {@link CanvasSourceOptions} for detailed documentation of options.\n *\n * @example\n * // add to map\n * map.addSource('some id', {\n * type: 'canvas',\n * canvas: 'idOfMyHTMLCanvas',\n * animate: true,\n * coordinates: [\n * [-76.54, 39.18],\n * [-76.52, 39.18],\n * [-76.52, 39.17],\n * [-76.54, 39.17]\n * ]\n * });\n *\n * // update\n * var mySource = map.getSource('some id');\n * mySource.setCoordinates([\n * [-76.54335737228394, 39.18579907229748],\n * [-76.52803659439087, 39.1838364847587],\n * [-76.5295386314392, 39.17683392507606],\n * [-76.54520273208618, 39.17876344106642]\n * ]);\n *\n * map.removeSource('some id'); // remove\n */\nclass CanvasSource extends ImageSource {\n options: CanvasSourceSpecification;\n animate: boolean;\n canvas: HTMLCanvasElement;\n width: number;\n height: number;\n play: () => void;\n pause: () => void;\n _playing: boolean;\n\n /**\n * @private\n */\n constructor(id: string, options: CanvasSourceSpecification, dispatcher: Dispatcher, eventedParent: Evented) {\n super(id, options, dispatcher, eventedParent);\n\n // We build in some validation here, since canvas sources aren't included in the style spec:\n if (!options.coordinates) {\n this.fire(new ErrorEvent(new ValidationError(`sources.${id}`, null, 'missing required property \"coordinates\"')));\n } else if (!Array.isArray(options.coordinates) || options.coordinates.length !== 4 ||\n options.coordinates.some(c => !Array.isArray(c) || c.length !== 2 || c.some(l => typeof l !== 'number'))) {\n this.fire(new ErrorEvent(new ValidationError(`sources.${id}`, null, '\"coordinates\" property must be an array of 4 longitude/latitude array pairs')));\n }\n\n if (options.animate && typeof options.animate !== 'boolean') {\n this.fire(new ErrorEvent(new ValidationError(`sources.${id}`, null, 'optional \"animate\" property must be a boolean value')));\n }\n\n if (!options.canvas) {\n this.fire(new ErrorEvent(new ValidationError(`sources.${id}`, null, 'missing required property \"canvas\"')));\n } else if (typeof options.canvas !== 'string' && !(options.canvas instanceof window.HTMLCanvasElement)) {\n this.fire(new ErrorEvent(new ValidationError(`sources.${id}`, null, '\"canvas\" must be either a string representing the ID of the canvas element from which to read, or an HTMLCanvasElement instance')));\n }\n\n this.options = options;\n this.animate = options.animate !== undefined ? options.animate : true;\n }\n\n /**\n * Enables animation. The image will be copied from the canvas to the map on each frame.\n * @method play\n * @instance\n * @memberof CanvasSource\n */\n\n /**\n * Disables animation. The map will display a static copy of the canvas image.\n * @method pause\n * @instance\n * @memberof CanvasSource\n */\n\n load() {\n this._loaded = true;\n if (!this.canvas) {\n this.canvas = (this.options.canvas instanceof window.HTMLCanvasElement) ?\n this.options.canvas :\n window.document.getElementById(this.options.canvas);\n }\n this.width = this.canvas.width;\n this.height = this.canvas.height;\n\n if (this._hasInvalidDimensions()) {\n this.fire(new ErrorEvent(new Error('Canvas dimensions cannot be less than or equal to zero.')));\n return;\n }\n\n this.play = function() {\n this._playing = true;\n this.map.triggerRepaint();\n };\n\n this.pause = function() {\n if (this._playing) {\n this.prepare();\n this._playing = false;\n }\n };\n\n this._finishLoading();\n }\n\n /**\n * Returns the HTML `canvas` element.\n *\n * @returns {HTMLCanvasElement} The HTML `canvas` element.\n */\n getCanvas() {\n return this.canvas;\n }\n\n onAdd(map: Map) {\n this.map = map;\n this.load();\n if (this.canvas) {\n if (this.animate) this.play();\n }\n }\n\n onRemove() {\n this.pause();\n }\n\n /**\n * Sets the canvas's coordinates and re-renders the map.\n *\n * @method setCoordinates\n * @instance\n * @memberof CanvasSource\n * @param {Array>} coordinates Four geographical coordinates,\n * represented as arrays of longitude and latitude numbers, which define the corners of the canvas.\n * The coordinates start at the top left corner of the canvas and proceed in clockwise order.\n * They do not have to represent a rectangle.\n * @returns {CanvasSource} this\n */\n // setCoordinates inherited from ImageSource\n\n prepare() {\n let resize = false;\n if (this.canvas.width !== this.width) {\n this.width = this.canvas.width;\n resize = true;\n }\n if (this.canvas.height !== this.height) {\n this.height = this.canvas.height;\n resize = true;\n }\n\n if (this._hasInvalidDimensions()) return;\n\n if (Object.keys(this.tiles).length === 0) return; // not enough data for current position\n\n const context = this.map.painter.context;\n const gl = context.gl;\n\n if (!this.boundsBuffer) {\n this.boundsBuffer = context.createVertexBuffer(this._boundsArray, rasterBoundsAttributes.members);\n }\n\n if (!this.boundsSegments) {\n this.boundsSegments = SegmentVector.simpleSegment(0, 0, 4, 2);\n }\n\n if (!this.texture) {\n this.texture = new Texture(context, this.canvas, gl.RGBA, {premultiply: true});\n } else if (resize || this._playing) {\n this.texture.update(this.canvas, {premultiply: true});\n }\n\n for (const w in this.tiles) {\n const tile = this.tiles[w];\n if (tile.state !== 'loaded') {\n tile.state = 'loaded';\n tile.texture = this.texture;\n }\n }\n }\n\n serialize(): Object {\n return {\n type: 'canvas',\n coordinates: this.coordinates\n };\n }\n\n hasTransition() {\n return this._playing;\n }\n\n _hasInvalidDimensions() {\n for (const x of [this.canvas.width, this.canvas.height]) {\n if (isNaN(x) || x <= 0) return true;\n }\n return false;\n }\n}\n\nexport default CanvasSource;\n", "// @flow\n\nimport {bindAll} from '../util/util';\n\nimport type Dispatcher from '../util/dispatcher';\nimport type {Event, Evented} from '../util/evented';\nimport type Map from '../ui/map';\nimport type Tile from './tile';\nimport type {OverscaledTileID} from './tile_id';\nimport type {Callback} from '../types/callback';\nimport {CanonicalTileID} from './tile_id';\n\n/**\n * The `Source` interface must be implemented by each source type, including \"core\" types (`vector`, `raster`,\n * `video`, etc.) and all custom, third-party types.\n *\n * @private\n *\n * @param {string} id The id for the source. Must not be used by any existing source.\n * @param {Object} options Source options, specific to the source type (except for `options.type`, which is always\n * required).\n * @param {string} options.type The source type, matching the value of `name` used in {@link Style#addSourceType}.\n * @param {Dispatcher} dispatcher A {@link Dispatcher} instance, which can be used to send messages to the workers.\n *\n * @fires data with `{dataType: 'source', sourceDataType: 'metadata'}` to indicate that any necessary metadata\n * has been loaded so that it's okay to call `loadTile`; and with `{dataType: 'source', sourceDataType: 'content'}`\n * to indicate that the source data has changed, so that any current caches should be flushed.\n * @property {string} id The id for the source. Must match the id passed to the constructor.\n * @property {number} minzoom\n * @property {number} maxzoom\n * @property {boolean} isTileClipped `false` if tiles can be drawn outside their boundaries, `true` if they cannot.\n * @property {boolean} reparseOverscaled `true` if tiles should be sent back to the worker for each overzoomed zoom\n * level, `false` if not.\n * @property {boolean} roundZoom `true` if zoom levels are rounded to the nearest integer in the source data, `false`\n * if they are floor-ed to the nearest integer.\n */\nexport interface Source {\n +type: string;\n id: string;\n minzoom: number,\n maxzoom: number,\n tileSize: number,\n attribution?: string,\n\n roundZoom?: boolean,\n isTileClipped?: boolean,\n mapbox_logo?: boolean,\n tileID?: CanonicalTileID;\n reparseOverscaled?: boolean,\n vectorLayerIds?: Array,\n\n hasTransition(): boolean;\n loaded(): boolean;\n\n fire(event: Event): mixed;\n\n +onAdd?: (map: Map) => void;\n +onRemove?: (map: Map) => void;\n\n loadTile(tile: Tile, callback: Callback): void;\n +hasTile?: (tileID: OverscaledTileID) => boolean;\n +abortTile?: (tile: Tile, callback: Callback) => void;\n +unloadTile?: (tile: Tile, callback: Callback) => void;\n\n /**\n * @returns A plain (stringifiable) JS object representing the current state of the source.\n * Creating a source using the returned object as the `options` should result in a Source that is\n * equivalent to this one.\n * @private\n */\n serialize(): Object;\n\n +prepare?: () => void;\n}\n\ntype SourceStatics = {\n /*\n * An optional URL to a script which, when run by a Worker, registers a {@link WorkerSource}\n * implementation for this Source type by calling `self.registerWorkerSource(workerSource: WorkerSource)`.\n */\n workerSourceURL?: URL;\n};\n\nexport type SourceClass = Class & SourceStatics;\n\nimport vector from '../source/vector_tile_source';\nimport raster from '../source/raster_tile_source';\nimport rasterDem from '../source/raster_dem_tile_source';\nimport geojson from '../source/geojson_source';\nimport video from '../source/video_source';\nimport image from '../source/image_source';\nimport canvas from '../source/canvas_source';\n\nimport type {SourceSpecification} from '../style-spec/types';\n\nconst sourceTypes = {\n vector,\n raster,\n 'raster-dem': rasterDem,\n geojson,\n video,\n image,\n canvas\n};\n\n/*\n * Creates a tiled data source instance given an options object.\n *\n * @param id\n * @param {Object} source A source definition object compliant with\n * [`mapbox-gl-style-spec`](https://www.mapbox.com/mapbox-gl-style-spec/#sources) or, for a third-party source type,\n * with that type's requirements.\n * @param {Dispatcher} dispatcher\n * @returns {Source}\n */\nexport const create = function(id: string, specification: SourceSpecification, dispatcher: Dispatcher, eventedParent: Evented) {\n const source = new sourceTypes[specification.type](id, (specification: any), dispatcher, eventedParent);\n\n if (source.id !== id) {\n throw new Error(`Expected Source id to be ${id} instead of ${source.id}`);\n }\n\n bindAll(['load', 'abort', 'unload', 'serialize', 'prepare'], source);\n return source;\n};\n\nexport const getType = function (name: string) {\n return sourceTypes[name];\n};\n\nexport const setType = function (name: string, type: Class) {\n sourceTypes[name] = type;\n};\n\nexport interface Actor {\n send(type: string, data: Object, callback: Callback): void;\n}\n", "// @flow\n\nimport type SourceCache from './source_cache';\nimport type StyleLayer from '../style/style_layer';\nimport type CollisionIndex from '../symbol/collision_index';\nimport type Transform from '../geo/transform';\nimport type {RetainedQueryData} from '../symbol/placement';\nimport type {FilterSpecification} from '../style-spec/types';\nimport assert from 'assert';\nimport {mat4} from 'gl-matrix';\n\n/*\n * Returns a matrix that can be used to convert from tile coordinates to viewport pixel coordinates.\n */\nfunction getPixelPosMatrix(transform, tileID) {\n const t = mat4.identity([]);\n mat4.translate(t, t, [1, 1, 0]);\n mat4.scale(t, t, [transform.width * 0.5, transform.height * 0.5, 1]);\n return mat4.multiply(t, t, transform.calculatePosMatrix(tileID.toUnwrapped()));\n}\n\nfunction queryIncludes3DLayer(layers?: Array, styleLayers: {[_: string]: StyleLayer}, sourceID: string) {\n if (layers) {\n for (const layerID of layers) {\n const layer = styleLayers[layerID];\n if (layer && layer.source === sourceID && layer.type === 'fill-extrusion') {\n return true;\n }\n }\n } else {\n for (const key in styleLayers) {\n const layer = styleLayers[key];\n if (layer.source === sourceID && layer.type === 'fill-extrusion') {\n return true;\n }\n }\n }\n return false;\n}\n\nexport function queryRenderedFeatures(sourceCache: SourceCache,\n styleLayers: {[_: string]: StyleLayer},\n serializedLayers: {[_: string]: Object},\n queryGeometry: Array,\n params: { filter: FilterSpecification, layers: Array, availableImages: Array },\n transform: Transform) {\n\n const has3DLayer = queryIncludes3DLayer(params && params.layers, styleLayers, sourceCache.id);\n const maxPitchScaleFactor = transform.maxPitchScaleFactor();\n const tilesIn = sourceCache.tilesIn(queryGeometry, maxPitchScaleFactor, has3DLayer);\n\n tilesIn.sort(sortTilesIn);\n const renderedFeatureLayers = [];\n for (const tileIn of tilesIn) {\n renderedFeatureLayers.push({\n wrappedTileID: tileIn.tileID.wrapped().key,\n queryResults: tileIn.tile.queryRenderedFeatures(\n styleLayers,\n serializedLayers,\n sourceCache._state,\n tileIn.queryGeometry,\n tileIn.cameraQueryGeometry,\n tileIn.scale,\n params,\n transform,\n maxPitchScaleFactor,\n getPixelPosMatrix(sourceCache.transform, tileIn.tileID))\n });\n }\n\n const result = mergeRenderedFeatureLayers(renderedFeatureLayers);\n\n // Merge state from SourceCache into the results\n for (const layerID in result) {\n result[layerID].forEach((featureWrapper) => {\n const feature = featureWrapper.feature;\n const state = sourceCache.getFeatureState(feature.layer['source-layer'], feature.id);\n feature.source = feature.layer.source;\n if (feature.layer['source-layer']) {\n feature.sourceLayer = feature.layer['source-layer'];\n }\n feature.state = state;\n });\n }\n return result;\n}\n\nexport function queryRenderedSymbols(styleLayers: {[_: string]: StyleLayer},\n serializedLayers: {[_: string]: StyleLayer},\n sourceCaches: {[_: string]: SourceCache},\n queryGeometry: Array,\n params: { filter: FilterSpecification, layers: Array, availableImages: Array },\n collisionIndex: CollisionIndex,\n retainedQueryData: {[_: number]: RetainedQueryData}) {\n const result = {};\n const renderedSymbols = collisionIndex.queryRenderedSymbols(queryGeometry);\n const bucketQueryData = [];\n for (const bucketInstanceId of Object.keys(renderedSymbols).map(Number)) {\n bucketQueryData.push(retainedQueryData[bucketInstanceId]);\n }\n bucketQueryData.sort(sortTilesIn);\n\n for (const queryData of bucketQueryData) {\n const bucketSymbols = queryData.featureIndex.lookupSymbolFeatures(\n renderedSymbols[queryData.bucketInstanceId],\n serializedLayers,\n queryData.bucketIndex,\n queryData.sourceLayerIndex,\n params.filter,\n params.layers,\n params.availableImages,\n styleLayers);\n\n for (const layerID in bucketSymbols) {\n const resultFeatures = result[layerID] = result[layerID] || [];\n const layerSymbols = bucketSymbols[layerID];\n layerSymbols.sort((a, b) => {\n // Match topDownFeatureComparator from FeatureIndex, but using\n // most recent sorting of features from bucket.sortFeatures\n const featureSortOrder = queryData.featureSortOrder;\n if (featureSortOrder) {\n // queryRenderedSymbols documentation says we'll return features in\n // \"top-to-bottom\" rendering order (aka last-to-first).\n // Actually there can be multiple symbol instances per feature, so\n // we sort each feature based on the first matching symbol instance.\n const sortedA = featureSortOrder.indexOf(a.featureIndex);\n const sortedB = featureSortOrder.indexOf(b.featureIndex);\n assert(sortedA >= 0);\n assert(sortedB >= 0);\n return sortedB - sortedA;\n } else {\n // Bucket hasn't been re-sorted based on angle, so use the\n // reverse of the order the features appeared in the data.\n return b.featureIndex - a.featureIndex;\n }\n });\n for (const symbolFeature of layerSymbols) {\n resultFeatures.push(symbolFeature);\n }\n }\n }\n\n // Merge state from SourceCache into the results\n for (const layerName in result) {\n result[layerName].forEach((featureWrapper) => {\n const feature = featureWrapper.feature;\n const layer = styleLayers[layerName];\n const sourceCache = sourceCaches[layer.source];\n const state = sourceCache.getFeatureState(feature.layer['source-layer'], feature.id);\n feature.source = feature.layer.source;\n if (feature.layer['source-layer']) {\n feature.sourceLayer = feature.layer['source-layer'];\n }\n feature.state = state;\n });\n }\n return result;\n}\n\nexport function querySourceFeatures(sourceCache: SourceCache, params: any) {\n const tiles = sourceCache.getRenderableIds().map((id) => {\n return sourceCache.getTileByID(id);\n });\n\n const result = [];\n\n const dataTiles = {};\n for (let i = 0; i < tiles.length; i++) {\n const tile = tiles[i];\n const dataID = tile.tileID.canonical.key;\n if (!dataTiles[dataID]) {\n dataTiles[dataID] = true;\n tile.querySourceFeatures(result, params);\n }\n }\n\n return result;\n}\n\nfunction sortTilesIn(a, b) {\n const idA = a.tileID;\n const idB = b.tileID;\n return (idA.overscaledZ - idB.overscaledZ) || (idA.canonical.y - idB.canonical.y) || (idA.wrap - idB.wrap) || (idA.canonical.x - idB.canonical.x);\n}\n\nfunction mergeRenderedFeatureLayers(tiles) {\n // Merge results from all tiles, but if two tiles share the same\n // wrapped ID, don't duplicate features between the two tiles\n const result = {};\n const wrappedIDLayerMap = {};\n for (const tile of tiles) {\n const queryResults = tile.queryResults;\n const wrappedID = tile.wrappedTileID;\n const wrappedIDLayers = wrappedIDLayerMap[wrappedID] = wrappedIDLayerMap[wrappedID] || {};\n for (const layerID in queryResults) {\n const tileFeatures = queryResults[layerID];\n const wrappedIDFeatures = wrappedIDLayers[layerID] = wrappedIDLayers[layerID] || {};\n const resultFeatures = result[layerID] = result[layerID] || [];\n for (const tileFeature of tileFeatures) {\n if (!wrappedIDFeatures[tileFeature.featureIndex]) {\n wrappedIDFeatures[tileFeature.featureIndex] = true;\n resultFeatures.push(tileFeature);\n }\n }\n }\n }\n return result;\n}\n", "// @flow\n\nimport {OverscaledTileID} from './tile_id';\nimport type Tile from './tile';\n\n/**\n * A [least-recently-used cache](http://en.wikipedia.org/wiki/Cache_algorithms)\n * with hash lookup made possible by keeping a list of keys in parallel to\n * an array of dictionary of values\n *\n * @private\n */\nclass TileCache {\n max: number;\n data: {[key: string]: Array<{ value: Tile, timeout: ?TimeoutID}>};\n order: Array;\n onRemove: (element: Tile) => void;\n /**\n * @param {number} max number of permitted values\n * @param {Function} onRemove callback called with items when they expire\n */\n constructor(max: number, onRemove: (element: Tile) => void) {\n this.max = max;\n this.onRemove = onRemove;\n this.reset();\n }\n\n /**\n * Clear the cache\n *\n * @returns {TileCache} this cache\n * @private\n */\n reset() {\n for (const key in this.data) {\n for (const removedData of this.data[key]) {\n if (removedData.timeout) clearTimeout(removedData.timeout);\n this.onRemove(removedData.value);\n }\n }\n\n this.data = {};\n this.order = [];\n\n return this;\n }\n\n /**\n * Add a key, value combination to the cache, trimming its size if this pushes\n * it over max length.\n *\n * @param {OverscaledTileID} tileID lookup key for the item\n * @param {*} data any value\n *\n * @returns {TileCache} this cache\n * @private\n */\n add(tileID: OverscaledTileID, data: Tile, expiryTimeout: number | void) {\n const key = tileID.wrapped().key;\n if (this.data[key] === undefined) {\n this.data[key] = [];\n }\n\n const dataWrapper = {\n value: data,\n timeout: undefined\n };\n\n if (expiryTimeout !== undefined) {\n dataWrapper.timeout = setTimeout(() => {\n this.remove(tileID, dataWrapper);\n }, expiryTimeout);\n }\n\n this.data[key].push(dataWrapper);\n this.order.push(key);\n\n if (this.order.length > this.max) {\n const removedData = this._getAndRemoveByKey(this.order[0]);\n if (removedData) this.onRemove(removedData);\n }\n\n return this;\n }\n\n /**\n * Determine whether the value attached to `key` is present\n *\n * @param {OverscaledTileID} tileID the key to be looked-up\n * @returns {boolean} whether the cache has this value\n * @private\n */\n has(tileID: OverscaledTileID): boolean {\n return tileID.wrapped().key in this.data;\n }\n\n /**\n * Get the value attached to a specific key and remove data from cache.\n * If the key is not found, returns `null`\n *\n * @param {OverscaledTileID} tileID the key to look up\n * @returns {*} the data, or null if it isn't found\n * @private\n */\n getAndRemove(tileID: OverscaledTileID): ?Tile {\n if (!this.has(tileID)) { return null; }\n return this._getAndRemoveByKey(tileID.wrapped().key);\n }\n\n /*\n * Get and remove the value with the specified key.\n */\n _getAndRemoveByKey(key: string): ?Tile {\n const data = this.data[key].shift();\n if (data.timeout) clearTimeout(data.timeout);\n\n if (this.data[key].length === 0) {\n delete this.data[key];\n }\n this.order.splice(this.order.indexOf(key), 1);\n\n return data.value;\n }\n\n /*\n * Get the value with the specified (wrapped tile) key.\n */\n getByKey(key: string): ?Tile {\n const data = this.data[key];\n return data ? data[0].value : null;\n }\n\n /**\n * Get the value attached to a specific key without removing data\n * from the cache. If the key is not found, returns `null`\n *\n * @param {OverscaledTileID} tileID the key to look up\n * @returns {*} the data, or null if it isn't found\n * @private\n */\n get(tileID: OverscaledTileID): ?Tile {\n if (!this.has(tileID)) { return null; }\n\n const data = this.data[tileID.wrapped().key][0];\n return data.value;\n }\n\n /**\n * Remove a key/value combination from the cache.\n *\n * @param {OverscaledTileID} tileID the key for the pair to delete\n * @param {Tile} value If a value is provided, remove that exact version of the value.\n * @returns {TileCache} this cache\n * @private\n */\n remove(tileID: OverscaledTileID, value: ?{ value: Tile, timeout: ?TimeoutID}) {\n if (!this.has(tileID)) { return this; }\n const key = tileID.wrapped().key;\n\n const dataIndex = value === undefined ? 0 : this.data[key].indexOf(value);\n const data = this.data[key][dataIndex];\n this.data[key].splice(dataIndex, 1);\n if (data.timeout) clearTimeout(data.timeout);\n if (this.data[key].length === 0) {\n delete this.data[key];\n }\n this.onRemove(data.value);\n this.order.splice(this.order.indexOf(key), 1);\n\n return this;\n }\n\n /**\n * Change the max size of the cache.\n *\n * @param {number} max the max size of the cache\n * @returns {TileCache} this cache\n * @private\n */\n setMaxSize(max: number): TileCache {\n this.max = max;\n\n while (this.order.length > this.max) {\n const removedData = this._getAndRemoveByKey(this.order[0]);\n if (removedData) this.onRemove(removedData);\n }\n\n return this;\n }\n\n /**\n * Remove entries that do not pass a filter function. Used for removing\n * stale tiles from the cache.\n *\n * @param {function} filterFn Determines whether the tile is filtered. If the supplied function returns false, the tile will be filtered out.\n */\n filter(filterFn: (tile: Tile) => boolean) {\n const removed = [];\n for (const key in this.data) {\n for (const entry of this.data[key]) {\n if (!filterFn(entry.value)) {\n removed.push(entry);\n }\n }\n }\n for (const r of removed) {\n this.remove(r.value.tileID, r);\n }\n }\n}\n\nexport default TileCache;\n", "// @flow\nimport assert from 'assert';\n\nimport type {StructArray} from '../util/struct_array';\nimport type {TriangleIndexArray, LineIndexArray, LineStripIndexArray} from '../data/index_array_type';\nimport type Context from '../gl/context';\n\nclass IndexBuffer {\n context: Context;\n buffer: WebGLBuffer;\n dynamicDraw: boolean;\n\n constructor(context: Context, array: TriangleIndexArray | LineIndexArray | LineStripIndexArray, dynamicDraw?: boolean) {\n this.context = context;\n const gl = context.gl;\n this.buffer = gl.createBuffer();\n this.dynamicDraw = Boolean(dynamicDraw);\n\n // The bound index buffer is part of vertex array object state. We don't want to\n // modify whatever VAO happens to be currently bound, so make sure the default\n // vertex array provided by the context is bound instead.\n this.context.unbindVAO();\n\n context.bindElementBuffer.set(this.buffer);\n gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, array.arrayBuffer, this.dynamicDraw ? gl.DYNAMIC_DRAW : gl.STATIC_DRAW);\n\n if (!this.dynamicDraw) {\n delete array.arrayBuffer;\n }\n }\n\n bind() {\n this.context.bindElementBuffer.set(this.buffer);\n }\n\n updateData(array: StructArray) {\n const gl = this.context.gl;\n assert(this.dynamicDraw);\n // The right VAO will get this buffer re-bound later in VertexArrayObject#bind\n // See https://github.com/mapbox/mapbox-gl-js/issues/5620\n this.context.unbindVAO();\n this.bind();\n gl.bufferSubData(gl.ELEMENT_ARRAY_BUFFER, 0, array.arrayBuffer);\n }\n\n destroy() {\n const gl = this.context.gl;\n if (this.buffer) {\n gl.deleteBuffer(this.buffer);\n delete this.buffer;\n }\n }\n}\n\nexport default IndexBuffer;\n", "// @flow\n\nimport assert from 'assert';\n\nimport type {\n StructArray,\n StructArrayMember\n} from '../util/struct_array';\n\nimport type Program from '../render/program';\nimport type Context from '../gl/context';\n\n/**\n * @enum {string} AttributeType\n * @private\n * @readonly\n */\nconst AttributeType = {\n Int8: 'BYTE',\n Uint8: 'UNSIGNED_BYTE',\n Int16: 'SHORT',\n Uint16: 'UNSIGNED_SHORT',\n Int32: 'INT',\n Uint32: 'UNSIGNED_INT',\n Float32: 'FLOAT'\n};\n\n/**\n * The `VertexBuffer` class turns a `StructArray` into a WebGL buffer. Each member of the StructArray's\n * Struct type is converted to a WebGL atribute.\n * @private\n */\nclass VertexBuffer {\n length: number;\n attributes: $ReadOnlyArray;\n itemSize: number;\n dynamicDraw: ?boolean;\n context: Context;\n buffer: WebGLBuffer;\n\n /**\n * @param dynamicDraw Whether this buffer will be repeatedly updated.\n * @private\n */\n constructor(context: Context, array: StructArray, attributes: $ReadOnlyArray, dynamicDraw?: boolean) {\n this.length = array.length;\n this.attributes = attributes;\n this.itemSize = array.bytesPerElement;\n this.dynamicDraw = dynamicDraw;\n\n this.context = context;\n const gl = context.gl;\n this.buffer = gl.createBuffer();\n context.bindVertexBuffer.set(this.buffer);\n gl.bufferData(gl.ARRAY_BUFFER, array.arrayBuffer, this.dynamicDraw ? gl.DYNAMIC_DRAW : gl.STATIC_DRAW);\n\n if (!this.dynamicDraw) {\n delete array.arrayBuffer;\n }\n }\n\n bind() {\n this.context.bindVertexBuffer.set(this.buffer);\n }\n\n updateData(array: StructArray) {\n assert(array.length === this.length);\n const gl = this.context.gl;\n this.bind();\n gl.bufferSubData(gl.ARRAY_BUFFER, 0, array.arrayBuffer);\n }\n\n enableAttributes(gl: WebGLRenderingContext, program: Program<*>) {\n for (let j = 0; j < this.attributes.length; j++) {\n const member = this.attributes[j];\n const attribIndex: number | void = program.attributes[member.name];\n if (attribIndex !== undefined) {\n gl.enableVertexAttribArray(attribIndex);\n }\n }\n }\n\n /**\n * Set the attribute pointers in a WebGL context\n * @param gl The WebGL context\n * @param program The active WebGL program\n * @param vertexOffset Index of the starting vertex of the segment\n */\n setVertexAttribPointers(gl: WebGLRenderingContext, program: Program<*>, vertexOffset: ?number) {\n for (let j = 0; j < this.attributes.length; j++) {\n const member = this.attributes[j];\n const attribIndex: number | void = program.attributes[member.name];\n\n if (attribIndex !== undefined) {\n gl.vertexAttribPointer(\n attribIndex,\n member.components,\n (gl: any)[AttributeType[member.type]],\n false,\n this.itemSize,\n member.offset + (this.itemSize * (vertexOffset || 0))\n );\n }\n }\n }\n\n /**\n * Destroy the GL buffer bound to the given WebGL context\n */\n destroy() {\n const gl = this.context.gl;\n if (this.buffer) {\n gl.deleteBuffer(this.buffer);\n delete this.buffer;\n }\n }\n}\n\nexport default VertexBuffer;\n", "// @flow\n\nimport Color from '../style-spec/util/color';\n\nimport type Context from './context';\nimport type {\n BlendFuncType,\n BlendEquationType,\n ColorMaskType,\n DepthRangeType,\n DepthMaskType,\n StencilFuncType,\n StencilOpType,\n DepthFuncType,\n TextureUnitType,\n ViewportType,\n CullFaceModeType,\n FrontFaceType,\n} from './types';\n\nexport interface Value {\n current: T;\n default: T;\n dirty: boolean;\n get(): T;\n setDefault(): void;\n set(value: T): void;\n}\n\nclass BaseValue implements Value {\n gl: WebGLRenderingContext;\n current: T;\n default: T;\n dirty: boolean;\n\n constructor(context: Context) {\n this.gl = context.gl;\n this.default = this.getDefault();\n this.current = this.default;\n this.dirty = false;\n }\n\n get(): T {\n return this.current;\n }\n set(value: T) { // eslint-disable-line\n // overridden in child classes;\n }\n\n getDefault(): T {\n return this.default; // overriden in child classes\n }\n setDefault() {\n this.set(this.default);\n }\n}\n\nexport class ClearColor extends BaseValue {\n getDefault(): Color {\n return Color.transparent;\n }\n set(v: Color) {\n const c = this.current;\n if (v.r === c.r && v.g === c.g && v.b === c.b && v.a === c.a && !this.dirty) return;\n this.gl.clearColor(v.r, v.g, v.b, v.a);\n this.current = v;\n this.dirty = false;\n }\n}\n\nexport class ClearDepth extends BaseValue {\n getDefault(): number {\n return 1;\n }\n set(v: number) {\n if (v === this.current && !this.dirty) return;\n this.gl.clearDepth(v);\n this.current = v;\n this.dirty = false;\n }\n}\n\nexport class ClearStencil extends BaseValue {\n getDefault(): number {\n return 0;\n }\n set(v: number) {\n if (v === this.current && !this.dirty) return;\n this.gl.clearStencil(v);\n this.current = v;\n this.dirty = false;\n }\n}\n\nexport class ColorMask extends BaseValue {\n getDefault(): ColorMaskType {\n return [true, true, true, true];\n }\n set(v: ColorMaskType) {\n const c = this.current;\n if (v[0] === c[0] && v[1] === c[1] && v[2] === c[2] && v[3] === c[3] && !this.dirty) return;\n this.gl.colorMask(v[0], v[1], v[2], v[3]);\n this.current = v;\n this.dirty = false;\n }\n}\n\nexport class DepthMask extends BaseValue {\n getDefault(): DepthMaskType {\n return true;\n }\n set(v: DepthMaskType): void {\n if (v === this.current && !this.dirty) return;\n this.gl.depthMask(v);\n this.current = v;\n this.dirty = false;\n }\n}\n\nexport class StencilMask extends BaseValue {\n getDefault(): number {\n return 0xFF;\n }\n set(v: number): void {\n if (v === this.current && !this.dirty) return;\n this.gl.stencilMask(v);\n this.current = v;\n this.dirty = false;\n }\n}\n\nexport class StencilFunc extends BaseValue {\n getDefault(): StencilFuncType {\n return {\n func: this.gl.ALWAYS,\n ref: 0,\n mask: 0xFF\n };\n }\n set(v: StencilFuncType): void {\n const c = this.current;\n if (v.func === c.func && v.ref === c.ref && v.mask === c.mask && !this.dirty) return;\n this.gl.stencilFunc(v.func, v.ref, v.mask);\n this.current = v;\n this.dirty = false;\n }\n}\n\nexport class StencilOp extends BaseValue {\n getDefault(): StencilOpType {\n const gl = this.gl;\n return [gl.KEEP, gl.KEEP, gl.KEEP];\n }\n set(v: StencilOpType) {\n const c = this.current;\n if (v[0] === c[0] && v[1] === c[1] && v[2] === c[2] && !this.dirty) return;\n this.gl.stencilOp(v[0], v[1], v[2]);\n this.current = v;\n this.dirty = false;\n }\n}\n\nexport class StencilTest extends BaseValue {\n getDefault(): boolean {\n return false;\n }\n set(v: boolean) {\n if (v === this.current && !this.dirty) return;\n const gl = this.gl;\n if (v) {\n gl.enable(gl.STENCIL_TEST);\n } else {\n gl.disable(gl.STENCIL_TEST);\n }\n this.current = v;\n this.dirty = false;\n }\n}\n\nexport class DepthRange extends BaseValue {\n getDefault(): DepthRangeType {\n return [0, 1];\n }\n set(v: DepthRangeType) {\n const c = this.current;\n if (v[0] === c[0] && v[1] === c[1] && !this.dirty) return;\n this.gl.depthRange(v[0], v[1]);\n this.current = v;\n this.dirty = false;\n }\n}\n\nexport class DepthTest extends BaseValue {\n getDefault(): boolean {\n return false;\n }\n set(v: boolean) {\n if (v === this.current && !this.dirty) return;\n const gl = this.gl;\n if (v) {\n gl.enable(gl.DEPTH_TEST);\n } else {\n gl.disable(gl.DEPTH_TEST);\n }\n this.current = v;\n this.dirty = false;\n }\n}\n\nexport class DepthFunc extends BaseValue {\n getDefault(): DepthFuncType {\n return this.gl.LESS;\n }\n set(v: DepthFuncType) {\n if (v === this.current && !this.dirty) return;\n this.gl.depthFunc(v);\n this.current = v;\n this.dirty = false;\n }\n}\n\nexport class Blend extends BaseValue {\n getDefault(): boolean {\n return false;\n }\n set(v: boolean) {\n if (v === this.current && !this.dirty) return;\n const gl = this.gl;\n if (v) {\n gl.enable(gl.BLEND);\n } else {\n gl.disable(gl.BLEND);\n }\n this.current = v;\n this.dirty = false;\n }\n}\n\nexport class BlendFunc extends BaseValue {\n getDefault(): BlendFuncType {\n const gl = this.gl;\n return [gl.ONE, gl.ZERO];\n }\n set(v: BlendFuncType) {\n const c = this.current;\n if (v[0] === c[0] && v[1] === c[1] && !this.dirty) return;\n this.gl.blendFunc(v[0], v[1]);\n this.current = v;\n this.dirty = false;\n }\n}\n\nexport class BlendColor extends BaseValue {\n getDefault(): Color {\n return Color.transparent;\n }\n set(v: Color) {\n const c = this.current;\n if (v.r === c.r && v.g === c.g && v.b === c.b && v.a === c.a && !this.dirty) return;\n this.gl.blendColor(v.r, v.g, v.b, v.a);\n this.current = v;\n this.dirty = false;\n }\n}\n\nexport class BlendEquation extends BaseValue {\n getDefault(): BlendEquationType {\n return this.gl.FUNC_ADD;\n }\n set(v: BlendEquationType) {\n if (v === this.current && !this.dirty) return;\n this.gl.blendEquation(v);\n this.current = v;\n this.dirty = false;\n }\n}\n\nexport class CullFace extends BaseValue {\n getDefault(): boolean {\n return false;\n }\n set(v: boolean) {\n if (v === this.current && !this.dirty) return;\n const gl = this.gl;\n if (v) {\n gl.enable(gl.CULL_FACE);\n } else {\n gl.disable(gl.CULL_FACE);\n }\n this.current = v;\n this.dirty = false;\n }\n}\n\nexport class CullFaceSide extends BaseValue {\n getDefault(): CullFaceModeType {\n return this.gl.BACK;\n }\n set(v: CullFaceModeType) {\n if (v === this.current && !this.dirty) return;\n this.gl.cullFace(v);\n this.current = v;\n this.dirty = false;\n }\n}\n\nexport class FrontFace extends BaseValue {\n getDefault(): FrontFaceType {\n return this.gl.CCW;\n }\n set(v: FrontFaceType) {\n if (v === this.current && !this.dirty) return;\n this.gl.frontFace(v);\n this.current = v;\n this.dirty = false;\n }\n}\n\nexport class Program extends BaseValue {\n getDefault(): WebGLProgram {\n return null;\n }\n set(v: ?WebGLProgram) {\n if (v === this.current && !this.dirty) return;\n this.gl.useProgram(v);\n this.current = v;\n this.dirty = false;\n }\n}\n\nexport class ActiveTextureUnit extends BaseValue {\n getDefault(): TextureUnitType {\n return this.gl.TEXTURE0;\n }\n set(v: TextureUnitType) {\n if (v === this.current && !this.dirty) return;\n this.gl.activeTexture(v);\n this.current = v;\n this.dirty = false;\n }\n}\n\nexport class Viewport extends BaseValue {\n getDefault(): ViewportType {\n const gl = this.gl;\n return [0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight];\n }\n set(v: ViewportType) {\n const c = this.current;\n if (v[0] === c[0] && v[1] === c[1] && v[2] === c[2] && v[3] === c[3] && !this.dirty) return;\n this.gl.viewport(v[0], v[1], v[2], v[3]);\n this.current = v;\n this.dirty = false;\n }\n}\n\nexport class BindFramebuffer extends BaseValue {\n getDefault(): WebGLFramebuffer {\n return null;\n }\n set(v: ?WebGLFramebuffer) {\n if (v === this.current && !this.dirty) return;\n const gl = this.gl;\n gl.bindFramebuffer(gl.FRAMEBUFFER, v);\n this.current = v;\n this.dirty = false;\n }\n}\n\nexport class BindRenderbuffer extends BaseValue {\n getDefault(): WebGLRenderbuffer {\n return null;\n }\n set(v: ?WebGLRenderbuffer) {\n if (v === this.current && !this.dirty) return;\n const gl = this.gl;\n gl.bindRenderbuffer(gl.RENDERBUFFER, v);\n this.current = v;\n this.dirty = false;\n }\n}\n\nexport class BindTexture extends BaseValue {\n getDefault(): WebGLTexture {\n return null;\n }\n set(v: ?WebGLTexture) {\n if (v === this.current && !this.dirty) return;\n const gl = this.gl;\n gl.bindTexture(gl.TEXTURE_2D, v);\n this.current = v;\n this.dirty = false;\n }\n}\n\nexport class BindVertexBuffer extends BaseValue {\n getDefault(): WebGLBuffer {\n return null;\n }\n set(v: ?WebGLBuffer) {\n if (v === this.current && !this.dirty) return;\n const gl = this.gl;\n gl.bindBuffer(gl.ARRAY_BUFFER, v);\n this.current = v;\n this.dirty = false;\n }\n}\n\nexport class BindElementBuffer extends BaseValue {\n getDefault(): WebGLBuffer {\n return null;\n }\n set(v: ?WebGLBuffer) {\n // Always rebind\n const gl = this.gl;\n gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, v);\n this.current = v;\n this.dirty = false;\n }\n}\n\nexport class BindVertexArrayOES extends BaseValue {\n vao: any;\n\n constructor(context: Context) {\n super(context);\n this.vao = context.extVertexArrayObject;\n }\n getDefault(): any {\n return null;\n }\n set(v: any) {\n if (!this.vao || v === this.current && !this.dirty) return;\n this.vao.bindVertexArrayOES(v);\n this.current = v;\n this.dirty = false;\n }\n}\n\nexport class PixelStoreUnpack extends BaseValue {\n getDefault(): number {\n return 4;\n }\n set(v: number) {\n if (v === this.current && !this.dirty) return;\n const gl = this.gl;\n gl.pixelStorei(gl.UNPACK_ALIGNMENT, v);\n this.current = v;\n this.dirty = false;\n }\n}\n\nexport class PixelStoreUnpackPremultiplyAlpha extends BaseValue {\n getDefault(): boolean {\n return false;\n }\n set(v: boolean): void {\n if (v === this.current && !this.dirty) return;\n const gl = this.gl;\n gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, (v: any));\n this.current = v;\n this.dirty = false;\n }\n}\n\nexport class PixelStoreUnpackFlipY extends BaseValue {\n getDefault(): boolean {\n return false;\n }\n set(v: boolean): void {\n if (v === this.current && !this.dirty) return;\n const gl = this.gl;\n gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, (v: any));\n this.current = v;\n this.dirty = false;\n }\n}\n\nclass FramebufferAttachment extends BaseValue {\n parent: WebGLFramebuffer;\n context: Context;\n\n constructor(context: Context, parent: WebGLFramebuffer) {\n super(context);\n this.context = context;\n this.parent = parent;\n }\n getDefault() {\n return null;\n }\n}\n\nexport class ColorAttachment extends FramebufferAttachment {\n setDirty() {\n this.dirty = true;\n }\n set(v: ?WebGLTexture): void {\n if (v === this.current && !this.dirty) return;\n this.context.bindFramebuffer.set(this.parent);\n // note: it's possible to attach a renderbuffer to the color\n // attachment point, but thus far MBGL only uses textures for color\n const gl = this.gl;\n gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, v, 0);\n this.current = v;\n this.dirty = false;\n }\n}\n\nexport class DepthAttachment extends FramebufferAttachment {\n set(v: ?WebGLRenderbuffer): void {\n if (v === this.current && !this.dirty) return;\n this.context.bindFramebuffer.set(this.parent);\n // note: it's possible to attach a texture to the depth attachment\n // point, but thus far MBGL only uses renderbuffers for depth\n const gl = this.gl;\n gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.DEPTH_ATTACHMENT, gl.RENDERBUFFER, v);\n this.current = v;\n this.dirty = false;\n }\n}\n", "// @flow\nimport {ColorAttachment, DepthAttachment} from './value';\nimport assert from 'assert';\n\nimport type Context from './context';\n\nclass Framebuffer {\n context: Context;\n width: number;\n height: number;\n framebuffer: WebGLFramebuffer;\n colorAttachment: ColorAttachment;\n depthAttachment: DepthAttachment;\n\n constructor(context: Context, width: number, height: number, hasDepth: boolean) {\n this.context = context;\n this.width = width;\n this.height = height;\n const gl = context.gl;\n const fbo = this.framebuffer = gl.createFramebuffer();\n\n this.colorAttachment = new ColorAttachment(context, fbo);\n if (hasDepth) {\n this.depthAttachment = new DepthAttachment(context, fbo);\n }\n assert(gl.checkFramebufferStatus(gl.FRAMEBUFFER) === gl.FRAMEBUFFER_COMPLETE);\n }\n\n destroy() {\n const gl = this.context.gl;\n\n const texture = this.colorAttachment.get();\n if (texture) gl.deleteTexture(texture);\n\n if (this.depthAttachment) {\n const renderbuffer = this.depthAttachment.get();\n if (renderbuffer) gl.deleteRenderbuffer(renderbuffer);\n }\n\n gl.deleteFramebuffer(this.framebuffer);\n }\n}\n\nexport default Framebuffer;\n", "// @flow\nimport type {DepthFuncType, DepthMaskType, DepthRangeType} from './types';\n\nconst ALWAYS = 0x0207;\n\nclass DepthMode {\n func: DepthFuncType;\n mask: DepthMaskType;\n range: DepthRangeType;\n\n // DepthMask enums\n static ReadOnly: boolean;\n static ReadWrite: boolean;\n\n constructor(depthFunc: DepthFuncType, depthMask: DepthMaskType, depthRange: DepthRangeType) {\n this.func = depthFunc;\n this.mask = depthMask;\n this.range = depthRange;\n }\n\n static disabled: $ReadOnly;\n}\n\nDepthMode.ReadOnly = false;\nDepthMode.ReadWrite = true;\n\nDepthMode.disabled = new DepthMode(ALWAYS, DepthMode.ReadOnly, [0, 1]);\n\nexport default DepthMode;\n", "// @flow\nimport type {StencilOpConstant, StencilTest} from './types';\n\nconst ALWAYS = 0x0207;\nconst KEEP = 0x1E00;\n\nclass StencilMode {\n test: StencilTest;\n ref: number;\n mask: number;\n fail: StencilOpConstant;\n depthFail: StencilOpConstant;\n pass: StencilOpConstant;\n\n constructor(test: StencilTest, ref: number, mask: number, fail: StencilOpConstant,\n depthFail: StencilOpConstant, pass: StencilOpConstant) {\n this.test = test;\n this.ref = ref;\n this.mask = mask;\n this.fail = fail;\n this.depthFail = depthFail;\n this.pass = pass;\n }\n\n static disabled: $ReadOnly;\n}\n\nStencilMode.disabled = new StencilMode({func: ALWAYS, mask: 0}, 0, 0, KEEP, KEEP, KEEP);\n\nexport default StencilMode;\n", "// @flow\nimport Color from '../style-spec/util/color';\n\nimport type {BlendFuncType, ColorMaskType} from './types';\n\nconst ZERO = 0x0000;\nconst ONE = 0x0001;\nconst ONE_MINUS_SRC_ALPHA = 0x0303;\n\nclass ColorMode {\n blendFunction: BlendFuncType;\n blendColor: Color;\n mask: ColorMaskType;\n\n constructor(blendFunction: BlendFuncType, blendColor: Color, mask: ColorMaskType) {\n this.blendFunction = blendFunction;\n this.blendColor = blendColor;\n this.mask = mask;\n }\n\n static Replace: BlendFuncType;\n\n static disabled: $ReadOnly;\n static unblended: $ReadOnly;\n static alphaBlended: $ReadOnly;\n}\n\nColorMode.Replace = [ONE, ZERO];\n\nColorMode.disabled = new ColorMode(ColorMode.Replace, Color.transparent, [false, false, false, false]);\nColorMode.unblended = new ColorMode(ColorMode.Replace, Color.transparent, [true, true, true, true]);\nColorMode.alphaBlended = new ColorMode([ONE, ONE_MINUS_SRC_ALPHA], Color.transparent, [true, true, true, true]);\n\nexport default ColorMode;\n", "// @flow\n\nimport type {CullFaceModeType, FrontFaceType} from './types';\n\nconst BACK = 0x0405;\nconst CCW = 0x0901;\n\nclass CullFaceMode {\n enable: boolean;\n mode: CullFaceModeType;\n frontFace: FrontFaceType;\n\n constructor(enable: boolean, mode: CullFaceModeType, frontFace: FrontFaceType) {\n this.enable = enable;\n this.mode = mode;\n this.frontFace = frontFace;\n }\n\n static disabled: $ReadOnly;\n static backCCW: $ReadOnly;\n}\n\nCullFaceMode.disabled = new CullFaceMode(false, BACK, CCW);\nCullFaceMode.backCCW = new CullFaceMode(true, BACK, CCW);\n\nexport default CullFaceMode;\n", "// @flow\nimport IndexBuffer from './index_buffer';\n\nimport VertexBuffer from './vertex_buffer';\nimport Framebuffer from './framebuffer';\nimport DepthMode from './depth_mode';\nimport StencilMode from './stencil_mode';\nimport ColorMode from './color_mode';\nimport CullFaceMode from './cull_face_mode';\nimport {deepEqual} from '../util/util';\nimport {ClearColor, ClearDepth, ClearStencil, ColorMask, DepthMask, StencilMask, StencilFunc, StencilOp, StencilTest, DepthRange, DepthTest, DepthFunc, Blend, BlendFunc, BlendColor, BlendEquation, CullFace, CullFaceSide, FrontFace, Program, ActiveTextureUnit, Viewport, BindFramebuffer, BindRenderbuffer, BindTexture, BindVertexBuffer, BindElementBuffer, BindVertexArrayOES, PixelStoreUnpack, PixelStoreUnpackPremultiplyAlpha, PixelStoreUnpackFlipY} from './value';\n\nimport type {TriangleIndexArray, LineIndexArray, LineStripIndexArray} from '../data/index_array_type';\nimport type {\n StructArray,\n StructArrayMember\n} from '../util/struct_array';\nimport type Color from '../style-spec/util/color';\n\ntype ClearArgs = {\n color?: Color,\n depth?: number,\n stencil?: number\n};\n\nclass Context {\n gl: WebGLRenderingContext;\n extVertexArrayObject: any;\n currentNumAttributes: ?number;\n maxTextureSize: number;\n\n clearColor: ClearColor;\n clearDepth: ClearDepth;\n clearStencil: ClearStencil;\n colorMask: ColorMask;\n depthMask: DepthMask;\n stencilMask: StencilMask;\n stencilFunc: StencilFunc;\n stencilOp: StencilOp;\n stencilTest: StencilTest;\n depthRange: DepthRange;\n depthTest: DepthTest;\n depthFunc: DepthFunc;\n blend: Blend;\n blendFunc: BlendFunc;\n blendColor: BlendColor;\n blendEquation: BlendEquation;\n cullFace: CullFace;\n cullFaceSide: CullFaceSide;\n frontFace: FrontFace;\n program: Program;\n activeTexture: ActiveTextureUnit;\n viewport: Viewport;\n bindFramebuffer: BindFramebuffer;\n bindRenderbuffer: BindRenderbuffer;\n bindTexture: BindTexture;\n bindVertexBuffer: BindVertexBuffer;\n bindElementBuffer: BindElementBuffer;\n bindVertexArrayOES: BindVertexArrayOES;\n pixelStoreUnpack: PixelStoreUnpack;\n pixelStoreUnpackPremultiplyAlpha: PixelStoreUnpackPremultiplyAlpha;\n pixelStoreUnpackFlipY: PixelStoreUnpackFlipY;\n\n extTextureFilterAnisotropic: any;\n extTextureFilterAnisotropicMax: any;\n extTextureHalfFloat: any;\n extRenderToTextureHalfFloat: any;\n extTimerQuery: any;\n\n constructor(gl: WebGLRenderingContext) {\n this.gl = gl;\n this.extVertexArrayObject = this.gl.getExtension('OES_vertex_array_object');\n\n this.clearColor = new ClearColor(this);\n this.clearDepth = new ClearDepth(this);\n this.clearStencil = new ClearStencil(this);\n this.colorMask = new ColorMask(this);\n this.depthMask = new DepthMask(this);\n this.stencilMask = new StencilMask(this);\n this.stencilFunc = new StencilFunc(this);\n this.stencilOp = new StencilOp(this);\n this.stencilTest = new StencilTest(this);\n this.depthRange = new DepthRange(this);\n this.depthTest = new DepthTest(this);\n this.depthFunc = new DepthFunc(this);\n this.blend = new Blend(this);\n this.blendFunc = new BlendFunc(this);\n this.blendColor = new BlendColor(this);\n this.blendEquation = new BlendEquation(this);\n this.cullFace = new CullFace(this);\n this.cullFaceSide = new CullFaceSide(this);\n this.frontFace = new FrontFace(this);\n this.program = new Program(this);\n this.activeTexture = new ActiveTextureUnit(this);\n this.viewport = new Viewport(this);\n this.bindFramebuffer = new BindFramebuffer(this);\n this.bindRenderbuffer = new BindRenderbuffer(this);\n this.bindTexture = new BindTexture(this);\n this.bindVertexBuffer = new BindVertexBuffer(this);\n this.bindElementBuffer = new BindElementBuffer(this);\n this.bindVertexArrayOES = this.extVertexArrayObject && new BindVertexArrayOES(this);\n this.pixelStoreUnpack = new PixelStoreUnpack(this);\n this.pixelStoreUnpackPremultiplyAlpha = new PixelStoreUnpackPremultiplyAlpha(this);\n this.pixelStoreUnpackFlipY = new PixelStoreUnpackFlipY(this);\n\n this.extTextureFilterAnisotropic = (\n gl.getExtension('EXT_texture_filter_anisotropic') ||\n gl.getExtension('MOZ_EXT_texture_filter_anisotropic') ||\n gl.getExtension('WEBKIT_EXT_texture_filter_anisotropic')\n );\n if (this.extTextureFilterAnisotropic) {\n this.extTextureFilterAnisotropicMax = gl.getParameter(this.extTextureFilterAnisotropic.MAX_TEXTURE_MAX_ANISOTROPY_EXT);\n }\n\n this.extTextureHalfFloat = gl.getExtension('OES_texture_half_float');\n if (this.extTextureHalfFloat) {\n gl.getExtension('OES_texture_half_float_linear');\n this.extRenderToTextureHalfFloat = gl.getExtension('EXT_color_buffer_half_float');\n }\n\n this.extTimerQuery = gl.getExtension('EXT_disjoint_timer_query');\n this.maxTextureSize = gl.getParameter(gl.MAX_TEXTURE_SIZE);\n }\n\n setDefault() {\n this.unbindVAO();\n\n this.clearColor.setDefault();\n this.clearDepth.setDefault();\n this.clearStencil.setDefault();\n this.colorMask.setDefault();\n this.depthMask.setDefault();\n this.stencilMask.setDefault();\n this.stencilFunc.setDefault();\n this.stencilOp.setDefault();\n this.stencilTest.setDefault();\n this.depthRange.setDefault();\n this.depthTest.setDefault();\n this.depthFunc.setDefault();\n this.blend.setDefault();\n this.blendFunc.setDefault();\n this.blendColor.setDefault();\n this.blendEquation.setDefault();\n this.cullFace.setDefault();\n this.cullFaceSide.setDefault();\n this.frontFace.setDefault();\n this.program.setDefault();\n this.activeTexture.setDefault();\n this.bindFramebuffer.setDefault();\n this.pixelStoreUnpack.setDefault();\n this.pixelStoreUnpackPremultiplyAlpha.setDefault();\n this.pixelStoreUnpackFlipY.setDefault();\n }\n\n setDirty() {\n this.clearColor.dirty = true;\n this.clearDepth.dirty = true;\n this.clearStencil.dirty = true;\n this.colorMask.dirty = true;\n this.depthMask.dirty = true;\n this.stencilMask.dirty = true;\n this.stencilFunc.dirty = true;\n this.stencilOp.dirty = true;\n this.stencilTest.dirty = true;\n this.depthRange.dirty = true;\n this.depthTest.dirty = true;\n this.depthFunc.dirty = true;\n this.blend.dirty = true;\n this.blendFunc.dirty = true;\n this.blendColor.dirty = true;\n this.blendEquation.dirty = true;\n this.cullFace.dirty = true;\n this.cullFaceSide.dirty = true;\n this.frontFace.dirty = true;\n this.program.dirty = true;\n this.activeTexture.dirty = true;\n this.viewport.dirty = true;\n this.bindFramebuffer.dirty = true;\n this.bindRenderbuffer.dirty = true;\n this.bindTexture.dirty = true;\n this.bindVertexBuffer.dirty = true;\n this.bindElementBuffer.dirty = true;\n if (this.extVertexArrayObject) {\n this.bindVertexArrayOES.dirty = true;\n }\n this.pixelStoreUnpack.dirty = true;\n this.pixelStoreUnpackPremultiplyAlpha.dirty = true;\n this.pixelStoreUnpackFlipY.dirty = true;\n }\n\n createIndexBuffer(array: TriangleIndexArray | LineIndexArray | LineStripIndexArray, dynamicDraw?: boolean) {\n return new IndexBuffer(this, array, dynamicDraw);\n }\n\n createVertexBuffer(array: StructArray, attributes: $ReadOnlyArray, dynamicDraw?: boolean) {\n return new VertexBuffer(this, array, attributes, dynamicDraw);\n }\n\n createRenderbuffer(storageFormat: number, width: number, height: number) {\n const gl = this.gl;\n\n const rbo = gl.createRenderbuffer();\n this.bindRenderbuffer.set(rbo);\n gl.renderbufferStorage(gl.RENDERBUFFER, storageFormat, width, height);\n this.bindRenderbuffer.set(null);\n\n return rbo;\n }\n\n createFramebuffer(width: number, height: number, hasDepth: boolean) {\n return new Framebuffer(this, width, height, hasDepth);\n }\n\n clear({color, depth}: ClearArgs) {\n const gl = this.gl;\n let mask = 0;\n\n if (color) {\n mask |= gl.COLOR_BUFFER_BIT;\n this.clearColor.set(color);\n this.colorMask.set([true, true, true, true]);\n }\n\n if (typeof depth !== 'undefined') {\n mask |= gl.DEPTH_BUFFER_BIT;\n\n // Workaround for platforms where clearDepth doesn't seem to work\n // without reseting the depthRange. See https://github.com/mapbox/mapbox-gl-js/issues/3437\n this.depthRange.set([0, 1]);\n\n this.clearDepth.set(depth);\n this.depthMask.set(true);\n }\n\n // See note in Painter#clearStencil: implement this the easy way once GPU bug/workaround is fixed upstream\n // if (typeof stencil !== 'undefined') {\n // mask |= gl.STENCIL_BUFFER_BIT;\n // this.clearStencil.set(stencil);\n // this.stencilMask.set(0xFF);\n // }\n\n gl.clear(mask);\n }\n\n setCullFace(cullFaceMode: $ReadOnly) {\n if (cullFaceMode.enable === false) {\n this.cullFace.set(false);\n } else {\n this.cullFace.set(true);\n this.cullFaceSide.set(cullFaceMode.mode);\n this.frontFace.set(cullFaceMode.frontFace);\n }\n }\n\n setDepthMode(depthMode: $ReadOnly) {\n if (depthMode.func === this.gl.ALWAYS && !depthMode.mask) {\n this.depthTest.set(false);\n } else {\n this.depthTest.set(true);\n this.depthFunc.set(depthMode.func);\n this.depthMask.set(depthMode.mask);\n this.depthRange.set(depthMode.range);\n }\n }\n\n setStencilMode(stencilMode: $ReadOnly) {\n if (stencilMode.test.func === this.gl.ALWAYS && !stencilMode.mask) {\n this.stencilTest.set(false);\n } else {\n this.stencilTest.set(true);\n this.stencilMask.set(stencilMode.mask);\n this.stencilOp.set([stencilMode.fail, stencilMode.depthFail, stencilMode.pass]);\n this.stencilFunc.set({\n func: stencilMode.test.func,\n ref: stencilMode.ref,\n mask: stencilMode.test.mask\n });\n }\n }\n\n setColorMode(colorMode: $ReadOnly) {\n if (deepEqual(colorMode.blendFunction, ColorMode.Replace)) {\n this.blend.set(false);\n } else {\n this.blend.set(true);\n this.blendFunc.set(colorMode.blendFunction);\n this.blendColor.set(colorMode.blendColor);\n }\n\n this.colorMask.set(colorMode.mask);\n }\n\n unbindVAO() {\n // Unbinding the VAO prevents other things (custom layers, new buffer creation) from\n // unintentionally changing the state of the last VAO used.\n if (this.extVertexArrayObject) {\n this.bindVertexArrayOES.set(null);\n }\n }\n}\n\nexport default Context;\n", "// @flow\n\nimport {create as createSource} from './source';\n\nimport Tile from './tile';\nimport {Event, ErrorEvent, Evented} from '../util/evented';\nimport TileCache from './tile_cache';\nimport MercatorCoordinate from '../geo/mercator_coordinate';\nimport {keysDifference, values} from '../util/util';\nimport EXTENT from '../data/extent';\nimport Context from '../gl/context';\nimport Point from '@mapbox/point-geometry';\nimport browser from '../util/browser';\nimport {OverscaledTileID} from './tile_id';\nimport assert from 'assert';\nimport SourceFeatureState from './source_state';\n\nimport type {Source} from './source';\nimport type Map from '../ui/map';\nimport type Style from '../style/style';\nimport type Dispatcher from '../util/dispatcher';\nimport type Transform from '../geo/transform';\nimport type {TileState} from './tile';\nimport type {Callback} from '../types/callback';\nimport type {SourceSpecification} from '../style-spec/types';\n\n/**\n * `SourceCache` is responsible for\n *\n * - creating an instance of `Source`\n * - forwarding events from `Source`\n * - caching tiles loaded from an instance of `Source`\n * - loading the tiles needed to render a given viewport\n * - unloading the cached tiles not needed to render a given viewport\n *\n * @private\n */\nclass SourceCache extends Evented {\n id: string;\n dispatcher: Dispatcher;\n map: Map;\n style: Style;\n\n _source: Source;\n _sourceLoaded: boolean;\n _sourceErrored: boolean;\n _tiles: {[_: string]: Tile};\n _prevLng: number | void;\n _cache: TileCache;\n _timers: {[_: any]: TimeoutID};\n _cacheTimers: {[_: any]: TimeoutID};\n _maxTileCacheSize: ?number;\n _paused: boolean;\n _shouldReloadOnResume: boolean;\n _coveredTiles: {[_: string]: boolean};\n transform: Transform;\n _isIdRenderable: (id: string, symbolLayer?: boolean) => boolean;\n used: boolean;\n _state: SourceFeatureState;\n _loadedParentTiles: {[_: string]: ?Tile};\n\n static maxUnderzooming: number;\n static maxOverzooming: number;\n\n constructor(id: string, options: SourceSpecification, dispatcher: Dispatcher) {\n super();\n this.id = id;\n this.dispatcher = dispatcher;\n\n this.on('data', (e) => {\n // this._sourceLoaded signifies that the TileJSON is loaded if applicable.\n // if the source type does not come with a TileJSON, the flag signifies the\n // source data has loaded (i.e geojson has been tiled on the worker and is ready)\n if (e.dataType === 'source' && e.sourceDataType === 'metadata') this._sourceLoaded = true;\n\n // for sources with mutable data, this event fires when the underlying data\n // to a source is changed. (i.e. GeoJSONSource#setData and ImageSource#serCoordinates)\n if (this._sourceLoaded && !this._paused && e.dataType === \"source\" && e.sourceDataType === 'content') {\n this.reload();\n if (this.transform) {\n this.update(this.transform);\n }\n }\n });\n\n this.on('error', () => {\n this._sourceErrored = true;\n });\n\n this._source = createSource(id, options, dispatcher, this);\n\n this._tiles = {};\n this._cache = new TileCache(0, this._unloadTile.bind(this));\n this._timers = {};\n this._cacheTimers = {};\n this._maxTileCacheSize = null;\n this._loadedParentTiles = {};\n\n this._coveredTiles = {};\n this._state = new SourceFeatureState();\n }\n\n onAdd(map: Map) {\n this.map = map;\n this._maxTileCacheSize = map ? map._maxTileCacheSize : null;\n if (this._source && this._source.onAdd) {\n this._source.onAdd(map);\n }\n }\n\n onRemove(map: Map) {\n if (this._source && this._source.onRemove) {\n this._source.onRemove(map);\n }\n }\n\n /**\n * Return true if no tile data is pending, tiles will not change unless\n * an additional API call is received.\n * @private\n */\n loaded(): boolean {\n if (this._sourceErrored) { return true; }\n if (!this._sourceLoaded) { return false; }\n if (!this._source.loaded()) { return false; }\n for (const t in this._tiles) {\n const tile = this._tiles[t];\n if (tile.state !== 'loaded' && tile.state !== 'errored')\n return false;\n }\n return true;\n }\n\n getSource(): Source {\n return this._source;\n }\n\n pause() {\n this._paused = true;\n }\n\n resume() {\n if (!this._paused) return;\n const shouldReload = this._shouldReloadOnResume;\n this._paused = false;\n this._shouldReloadOnResume = false;\n if (shouldReload) this.reload();\n if (this.transform) this.update(this.transform);\n }\n\n _loadTile(tile: Tile, callback: Callback) {\n return this._source.loadTile(tile, callback);\n }\n\n _unloadTile(tile: Tile) {\n if (this._source.unloadTile)\n return this._source.unloadTile(tile, () => {});\n }\n\n _abortTile(tile: Tile) {\n if (this._source.abortTile)\n return this._source.abortTile(tile, () => {});\n }\n\n serialize() {\n return this._source.serialize();\n }\n\n prepare(context: Context) {\n if (this._source.prepare) {\n this._source.prepare();\n }\n\n this._state.coalesceChanges(this._tiles, this.map ? this.map.painter : null);\n for (const i in this._tiles) {\n const tile = this._tiles[i];\n tile.upload(context);\n tile.prepare(this.map.style.imageManager);\n }\n }\n\n /**\n * Return all tile ids ordered with z-order, and cast to numbers\n * @private\n */\n getIds(): Array {\n return (values(this._tiles): any).map((tile: Tile) => tile.tileID).sort(compareTileId).map(id => id.key);\n }\n\n getRenderableIds(symbolLayer?: boolean): Array {\n const renderables: Array = [];\n for (const id in this._tiles) {\n if (this._isIdRenderable(id, symbolLayer)) renderables.push(this._tiles[id]);\n }\n if (symbolLayer) {\n return renderables.sort((a_: Tile, b_: Tile) => {\n const a = a_.tileID;\n const b = b_.tileID;\n const rotatedA = (new Point(a.canonical.x, a.canonical.y))._rotate(this.transform.angle);\n const rotatedB = (new Point(b.canonical.x, b.canonical.y))._rotate(this.transform.angle);\n return a.overscaledZ - b.overscaledZ || rotatedB.y - rotatedA.y || rotatedB.x - rotatedA.x;\n }).map(tile => tile.tileID.key);\n }\n return renderables.map(tile => tile.tileID).sort(compareTileId).map(id => id.key);\n }\n\n hasRenderableParent(tileID: OverscaledTileID) {\n const parentTile = this.findLoadedParent(tileID, 0);\n if (parentTile) {\n return this._isIdRenderable(parentTile.tileID.key);\n }\n return false;\n }\n\n _isIdRenderable(id: string, symbolLayer?: boolean) {\n return this._tiles[id] && this._tiles[id].hasData() &&\n !this._coveredTiles[id] && (symbolLayer || !this._tiles[id].holdingForFade());\n }\n\n reload() {\n if (this._paused) {\n this._shouldReloadOnResume = true;\n return;\n }\n\n this._cache.reset();\n\n for (const i in this._tiles) {\n if (this._tiles[i].state !== \"errored\") this._reloadTile(i, 'reloading');\n }\n }\n\n _reloadTile(id: string, state: TileState) {\n const tile = this._tiles[id];\n\n // this potentially does not address all underlying\n // issues https://github.com/mapbox/mapbox-gl-js/issues/4252\n // - hard to tell without repro steps\n if (!tile) return;\n\n // The difference between \"loading\" tiles and \"reloading\" or \"expired\"\n // tiles is that \"reloading\"/\"expired\" tiles are \"renderable\".\n // Therefore, a \"loading\" tile cannot become a \"reloading\" tile without\n // first becoming a \"loaded\" tile.\n if (tile.state !== 'loading') {\n tile.state = state;\n }\n\n this._loadTile(tile, this._tileLoaded.bind(this, tile, id, state));\n }\n\n _tileLoaded(tile: Tile, id: string, previousState: TileState, err: ?Error) {\n if (err) {\n tile.state = 'errored';\n if ((err: any).status !== 404) this._source.fire(new ErrorEvent(err, {tile}));\n // continue to try loading parent/children tiles if a tile doesn't exist (404)\n else this.update(this.transform);\n return;\n }\n\n tile.timeAdded = browser.now();\n if (previousState === 'expired') tile.refreshedUponExpiration = true;\n this._setTileReloadTimer(id, tile);\n if (this.getSource().type === 'raster-dem' && tile.dem) this._backfillDEM(tile);\n this._state.initializeTileState(tile, this.map ? this.map.painter : null);\n\n this._source.fire(new Event('data', {dataType: 'source', tile, coord: tile.tileID}));\n }\n\n /**\n * For raster terrain source, backfill DEM to eliminate visible tile boundaries\n * @private\n */\n _backfillDEM(tile: Tile) {\n const renderables = this.getRenderableIds();\n for (let i = 0; i < renderables.length; i++) {\n const borderId = renderables[i];\n if (tile.neighboringTiles && tile.neighboringTiles[borderId]) {\n const borderTile = this.getTileByID(borderId);\n fillBorder(tile, borderTile);\n fillBorder(borderTile, tile);\n }\n }\n\n function fillBorder(tile, borderTile) {\n tile.needsHillshadePrepare = true;\n let dx = borderTile.tileID.canonical.x - tile.tileID.canonical.x;\n const dy = borderTile.tileID.canonical.y - tile.tileID.canonical.y;\n const dim = Math.pow(2, tile.tileID.canonical.z);\n const borderId = borderTile.tileID.key;\n if (dx === 0 && dy === 0) return;\n\n if (Math.abs(dy) > 1) {\n return;\n }\n if (Math.abs(dx) > 1) {\n // Adjust the delta coordinate for world wraparound.\n if (Math.abs(dx + dim) === 1) {\n dx += dim;\n } else if (Math.abs(dx - dim) === 1) {\n dx -= dim;\n }\n }\n if (!borderTile.dem || !tile.dem) return;\n tile.dem.backfillBorder(borderTile.dem, dx, dy);\n if (tile.neighboringTiles && tile.neighboringTiles[borderId])\n tile.neighboringTiles[borderId].backfilled = true;\n }\n }\n /**\n * Get a specific tile by TileID\n * @private\n */\n getTile(tileID: OverscaledTileID): Tile {\n return this.getTileByID(tileID.key);\n }\n\n /**\n * Get a specific tile by id\n * @private\n */\n getTileByID(id: string): Tile {\n return this._tiles[id];\n }\n\n /**\n * For a given set of tiles, retain children that are loaded and have a zoom\n * between `zoom` (exclusive) and `maxCoveringZoom` (inclusive)\n * @private\n */\n _retainLoadedChildren(\n idealTiles: {[_: any]: OverscaledTileID},\n zoom: number,\n maxCoveringZoom: number,\n retain: {[_: any]: OverscaledTileID}\n ) {\n for (const id in this._tiles) {\n let tile = this._tiles[id];\n\n // only consider renderable tiles up to maxCoveringZoom\n if (retain[id] ||\n !tile.hasData() ||\n tile.tileID.overscaledZ <= zoom ||\n tile.tileID.overscaledZ > maxCoveringZoom\n ) continue;\n\n // loop through parents and retain the topmost loaded one if found\n let topmostLoadedID = tile.tileID;\n while (tile && tile.tileID.overscaledZ > zoom + 1) {\n const parentID = tile.tileID.scaledTo(tile.tileID.overscaledZ - 1);\n\n tile = this._tiles[parentID.key];\n\n if (tile && tile.hasData()) {\n topmostLoadedID = parentID;\n }\n }\n\n // loop through ancestors of the topmost loaded child to see if there's one that needed it\n let tileID = topmostLoadedID;\n while (tileID.overscaledZ > zoom) {\n tileID = tileID.scaledTo(tileID.overscaledZ - 1);\n\n if (idealTiles[tileID.key]) {\n // found a parent that needed a loaded child; retain that child\n retain[topmostLoadedID.key] = topmostLoadedID;\n break;\n }\n }\n }\n }\n\n /**\n * Find a loaded parent of the given tile (up to minCoveringZoom)\n * @private\n */\n findLoadedParent(tileID: OverscaledTileID, minCoveringZoom: number): ?Tile {\n if (tileID.key in this._loadedParentTiles) {\n const parent = this._loadedParentTiles[tileID.key];\n if (parent && parent.tileID.overscaledZ >= minCoveringZoom) {\n return parent;\n } else {\n return null;\n }\n }\n for (let z = tileID.overscaledZ - 1; z >= minCoveringZoom; z--) {\n const parentTileID = tileID.scaledTo(z);\n const tile = this._getLoadedTile(parentTileID);\n if (tile) {\n return tile;\n }\n }\n }\n\n _getLoadedTile(tileID: OverscaledTileID): ?Tile {\n const tile = this._tiles[tileID.key];\n if (tile && tile.hasData()) {\n return tile;\n }\n // TileCache ignores wrap in lookup.\n const cachedTile = this._cache.getByKey(tileID.wrapped().key);\n return cachedTile;\n }\n\n /**\n * Resizes the tile cache based on the current viewport's size\n * or the maxTileCacheSize option passed during map creation\n *\n * Larger viewports use more tiles and need larger caches. Larger viewports\n * are more likely to be found on devices with more memory and on pages where\n * the map is more important.\n * @private\n */\n updateCacheSize(transform: Transform) {\n const widthInTiles = Math.ceil(transform.width / this._source.tileSize) + 1;\n const heightInTiles = Math.ceil(transform.height / this._source.tileSize) + 1;\n const approxTilesInView = widthInTiles * heightInTiles;\n const commonZoomRange = 5;\n\n const viewDependentMaxSize = Math.floor(approxTilesInView * commonZoomRange);\n const maxSize = typeof this._maxTileCacheSize === 'number' ? Math.min(this._maxTileCacheSize, viewDependentMaxSize) : viewDependentMaxSize;\n\n this._cache.setMaxSize(maxSize);\n }\n\n handleWrapJump(lng: number) {\n // On top of the regular z/x/y values, TileIDs have a `wrap` value that specify\n // which cppy of the world the tile belongs to. For example, at `lng: 10` you\n // might render z/x/y/0 while at `lng: 370` you would render z/x/y/1.\n //\n // When lng values get wrapped (going from `lng: 370` to `long: 10`) you expect\n // to see the same thing on the screen (370 degrees and 10 degrees is the same\n // place in the world) but all the TileIDs will have different wrap values.\n //\n // In order to make this transition seamless, we calculate the rounded difference of\n // \"worlds\" between the last frame and the current frame. If the map panned by\n // a world, then we can assign all the tiles new TileIDs with updated wrap values.\n // For example, assign z/x/y/1 a new id: z/x/y/0. It is the same tile, just rendered\n // in a different position.\n //\n // This enables us to reuse the tiles at more ideal locations and prevent flickering.\n const prevLng = this._prevLng === undefined ? lng : this._prevLng;\n const lngDifference = lng - prevLng;\n const worldDifference = lngDifference / 360;\n const wrapDelta = Math.round(worldDifference);\n this._prevLng = lng;\n\n if (wrapDelta) {\n const tiles: {[_: string]: Tile} = {};\n for (const key in this._tiles) {\n const tile = this._tiles[key];\n tile.tileID = tile.tileID.unwrapTo(tile.tileID.wrap + wrapDelta);\n tiles[tile.tileID.key] = tile;\n }\n this._tiles = tiles;\n\n // Reset tile reload timers\n for (const id in this._timers) {\n clearTimeout(this._timers[id]);\n delete this._timers[id];\n }\n for (const id in this._tiles) {\n const tile = this._tiles[id];\n this._setTileReloadTimer(id, tile);\n }\n }\n }\n\n /**\n * Removes tiles that are outside the viewport and adds new tiles that\n * are inside the viewport.\n * @private\n */\n update(transform: Transform) {\n this.transform = transform;\n if (!this._sourceLoaded || this._paused) { return; }\n\n this.updateCacheSize(transform);\n this.handleWrapJump(this.transform.center.lng);\n\n // Covered is a list of retained tiles who's areas are fully covered by other,\n // better, retained tiles. They are not drawn separately.\n this._coveredTiles = {};\n\n let idealTileIDs;\n if (!this.used) {\n idealTileIDs = [];\n } else if (this._source.tileID) {\n idealTileIDs = transform.getVisibleUnwrappedCoordinates(this._source.tileID)\n .map((unwrapped) => new OverscaledTileID(unwrapped.canonical.z, unwrapped.wrap, unwrapped.canonical.z, unwrapped.canonical.x, unwrapped.canonical.y));\n } else {\n idealTileIDs = transform.coveringTiles({\n tileSize: this._source.tileSize,\n minzoom: this._source.minzoom,\n maxzoom: this._source.maxzoom,\n roundZoom: this._source.roundZoom,\n reparseOverscaled: this._source.reparseOverscaled\n });\n\n if (this._source.hasTile) {\n idealTileIDs = idealTileIDs.filter((coord) => (this._source.hasTile: any)(coord));\n }\n }\n\n // Determine the overzooming/underzooming amounts.\n const zoom = transform.coveringZoomLevel(this._source);\n const minCoveringZoom = Math.max(zoom - SourceCache.maxOverzooming, this._source.minzoom);\n const maxCoveringZoom = Math.max(zoom + SourceCache.maxUnderzooming, this._source.minzoom);\n\n // Retain is a list of tiles that we shouldn't delete, even if they are not\n // the most ideal tile for the current viewport. This may include tiles like\n // parent or child tiles that are *already* loaded.\n const retain = this._updateRetainedTiles(idealTileIDs, zoom);\n\n if (isRasterType(this._source.type)) {\n const parentsForFading: {[_: string]: OverscaledTileID} = {};\n const fadingTiles = {};\n const ids = Object.keys(retain);\n for (const id of ids) {\n const tileID = retain[id];\n assert(tileID.key === id);\n\n const tile = this._tiles[id];\n if (!tile || tile.fadeEndTime && tile.fadeEndTime <= browser.now()) continue;\n\n // if the tile is loaded but still fading in, find parents to cross-fade with it\n const parentTile = this.findLoadedParent(tileID, minCoveringZoom);\n if (parentTile) {\n this._addTile(parentTile.tileID);\n parentsForFading[parentTile.tileID.key] = parentTile.tileID;\n }\n\n fadingTiles[id] = tileID;\n }\n\n // for tiles that are still fading in, also find children to cross-fade with\n this._retainLoadedChildren(fadingTiles, zoom, maxCoveringZoom, retain);\n\n for (const id in parentsForFading) {\n if (!retain[id]) {\n // If a tile is only needed for fading, mark it as covered so that it isn't rendered on it's own.\n this._coveredTiles[id] = true;\n retain[id] = parentsForFading[id];\n }\n }\n }\n\n for (const retainedId in retain) {\n // Make sure retained tiles always clear any existing fade holds\n // so that if they're removed again their fade timer starts fresh.\n this._tiles[retainedId].clearFadeHold();\n }\n\n // Remove the tiles we don't need anymore.\n const remove = keysDifference(this._tiles, retain);\n for (const tileID of remove) {\n const tile = this._tiles[tileID];\n if (tile.hasSymbolBuckets && !tile.holdingForFade()) {\n tile.setHoldDuration(this.map._fadeDuration);\n } else if (!tile.hasSymbolBuckets || tile.symbolFadeFinished()) {\n this._removeTile(tileID);\n }\n }\n\n // Construct a cache of loaded parents\n this._updateLoadedParentTileCache();\n }\n\n releaseSymbolFadeTiles() {\n for (const id in this._tiles) {\n if (this._tiles[id].holdingForFade()) {\n this._removeTile(id);\n }\n }\n }\n\n _updateRetainedTiles(idealTileIDs: Array, zoom: number): {[_: string]: OverscaledTileID} {\n const retain: {[_: string]: OverscaledTileID} = {};\n const checked: {[_: string]: boolean } = {};\n const minCoveringZoom = Math.max(zoom - SourceCache.maxOverzooming, this._source.minzoom);\n const maxCoveringZoom = Math.max(zoom + SourceCache.maxUnderzooming, this._source.minzoom);\n\n const missingTiles = {};\n for (const tileID of idealTileIDs) {\n const tile = this._addTile(tileID);\n\n // retain the tile even if it's not loaded because it's an ideal tile.\n retain[tileID.key] = tileID;\n\n if (tile.hasData()) continue;\n\n if (zoom < this._source.maxzoom) {\n // save missing tiles that potentially have loaded children\n missingTiles[tileID.key] = tileID;\n }\n }\n\n // retain any loaded children of ideal tiles up to maxCoveringZoom\n this._retainLoadedChildren(missingTiles, zoom, maxCoveringZoom, retain);\n\n for (const tileID of idealTileIDs) {\n let tile = this._tiles[tileID.key];\n\n if (tile.hasData()) continue;\n\n // The tile we require is not yet loaded or does not exist;\n // Attempt to find children that fully cover it.\n\n if (zoom + 1 > this._source.maxzoom) {\n // We're looking for an overzoomed child tile.\n const childCoord = tileID.children(this._source.maxzoom)[0];\n const childTile = this.getTile(childCoord);\n if (!!childTile && childTile.hasData()) {\n retain[childCoord.key] = childCoord;\n continue; // tile is covered by overzoomed child\n }\n } else {\n // check if all 4 immediate children are loaded (i.e. the missing ideal tile is covered)\n const children = tileID.children(this._source.maxzoom);\n\n if (retain[children[0].key] &&\n retain[children[1].key] &&\n retain[children[2].key] &&\n retain[children[3].key]) continue; // tile is covered by children\n }\n\n // We couldn't find child tiles that entirely cover the ideal tile; look for parents now.\n\n // As we ascend up the tile pyramid of the ideal tile, we check whether the parent\n // tile has been previously requested (and errored because we only loop over tiles with no data)\n // in order to determine if we need to request its parent.\n let parentWasRequested = tile.wasRequested();\n\n for (let overscaledZ = tileID.overscaledZ - 1; overscaledZ >= minCoveringZoom; --overscaledZ) {\n const parentId = tileID.scaledTo(overscaledZ);\n\n // Break parent tile ascent if this route has been previously checked by another child.\n if (checked[parentId.key]) break;\n checked[parentId.key] = true;\n\n tile = this.getTile(parentId);\n if (!tile && parentWasRequested) {\n tile = this._addTile(parentId);\n }\n if (tile) {\n retain[parentId.key] = parentId;\n // Save the current values, since they're the parent of the next iteration\n // of the parent tile ascent loop.\n parentWasRequested = tile.wasRequested();\n if (tile.hasData()) break;\n }\n }\n }\n\n return retain;\n }\n\n _updateLoadedParentTileCache() {\n this._loadedParentTiles = {};\n\n for (const tileKey in this._tiles) {\n const path = [];\n let parentTile: ?Tile;\n let currentId = this._tiles[tileKey].tileID;\n\n // Find the closest loaded ancestor by traversing the tile tree towards the root and\n // caching results along the way\n while (currentId.overscaledZ > 0) {\n\n // Do we have a cached result from previous traversals?\n if (currentId.key in this._loadedParentTiles) {\n parentTile = this._loadedParentTiles[currentId.key];\n break;\n }\n\n path.push(currentId.key);\n\n // Is the parent loaded?\n const parentId = currentId.scaledTo(currentId.overscaledZ - 1);\n parentTile = this._getLoadedTile(parentId);\n if (parentTile) {\n break;\n }\n\n currentId = parentId;\n }\n\n // Cache the result of this traversal to all newly visited tiles\n for (const key of path) {\n this._loadedParentTiles[key] = parentTile;\n }\n }\n }\n\n /**\n * Add a tile, given its coordinate, to the pyramid.\n * @private\n */\n _addTile(tileID: OverscaledTileID): Tile {\n let tile = this._tiles[tileID.key];\n if (tile)\n return tile;\n\n tile = this._cache.getAndRemove(tileID);\n if (tile) {\n this._setTileReloadTimer(tileID.key, tile);\n // set the tileID because the cached tile could have had a different wrap value\n tile.tileID = tileID;\n this._state.initializeTileState(tile, this.map ? this.map.painter : null);\n if (this._cacheTimers[tileID.key]) {\n clearTimeout(this._cacheTimers[tileID.key]);\n delete this._cacheTimers[tileID.key];\n this._setTileReloadTimer(tileID.key, tile);\n }\n }\n\n const cached = Boolean(tile);\n if (!cached) {\n tile = new Tile(tileID, this._source.tileSize * tileID.overscaleFactor());\n this._loadTile(tile, this._tileLoaded.bind(this, tile, tileID.key, tile.state));\n }\n\n // Impossible, but silence flow.\n if (!tile) return (null: any);\n\n tile.uses++;\n this._tiles[tileID.key] = tile;\n if (!cached) this._source.fire(new Event('dataloading', {tile, coord: tile.tileID, dataType: 'source'}));\n\n return tile;\n }\n\n _setTileReloadTimer(id: string, tile: Tile) {\n if (id in this._timers) {\n clearTimeout(this._timers[id]);\n delete this._timers[id];\n }\n\n const expiryTimeout = tile.getExpiryTimeout();\n if (expiryTimeout) {\n this._timers[id] = setTimeout(() => {\n this._reloadTile(id, 'expired');\n delete this._timers[id];\n }, expiryTimeout);\n }\n }\n\n /**\n * Remove a tile, given its id, from the pyramid\n * @private\n */\n _removeTile(id: string) {\n const tile = this._tiles[id];\n if (!tile)\n return;\n\n tile.uses--;\n delete this._tiles[id];\n if (this._timers[id]) {\n clearTimeout(this._timers[id]);\n delete this._timers[id];\n }\n\n if (tile.uses > 0)\n return;\n\n if (tile.hasData() && tile.state !== 'reloading') {\n this._cache.add(tile.tileID, tile, tile.getExpiryTimeout());\n } else {\n tile.aborted = true;\n this._abortTile(tile);\n this._unloadTile(tile);\n }\n }\n\n /**\n * Remove all tiles from this pyramid\n */\n clearTiles() {\n this._shouldReloadOnResume = false;\n this._paused = false;\n\n for (const id in this._tiles)\n this._removeTile(id);\n\n this._cache.reset();\n }\n\n /**\n * Search through our current tiles and attempt to find the tiles that\n * cover the given bounds.\n * @param pointQueryGeometry coordinates of the corners of bounding rectangle\n * @returns {Array} result items have {tile, minX, maxX, minY, maxY}, where min/max bounding values are the given bounds transformed in into the coordinate space of this tile.\n * @private\n */\n tilesIn(pointQueryGeometry: Array, maxPitchScaleFactor: number, has3DLayer: boolean) {\n\n const tileResults = [];\n\n const transform = this.transform;\n if (!transform) return tileResults;\n\n const cameraPointQueryGeometry = has3DLayer ?\n transform.getCameraQueryGeometry(pointQueryGeometry) :\n pointQueryGeometry;\n\n const queryGeometry = pointQueryGeometry.map((p) => transform.pointCoordinate(p));\n const cameraQueryGeometry = cameraPointQueryGeometry.map((p) => transform.pointCoordinate(p));\n\n const ids = this.getIds();\n\n let minX = Infinity;\n let minY = Infinity;\n let maxX = -Infinity;\n let maxY = -Infinity;\n\n for (const p of cameraQueryGeometry) {\n minX = Math.min(minX, p.x);\n minY = Math.min(minY, p.y);\n maxX = Math.max(maxX, p.x);\n maxY = Math.max(maxY, p.y);\n }\n\n for (let i = 0; i < ids.length; i++) {\n const tile = this._tiles[ids[i]];\n if (tile.holdingForFade()) {\n // Tiles held for fading are covered by tiles that are closer to ideal\n continue;\n }\n const tileID = tile.tileID;\n const scale = Math.pow(2, transform.zoom - tile.tileID.overscaledZ);\n const queryPadding = maxPitchScaleFactor * tile.queryPadding * EXTENT / tile.tileSize / scale;\n\n const tileSpaceBounds = [\n tileID.getTilePoint(new MercatorCoordinate(minX, minY)),\n tileID.getTilePoint(new MercatorCoordinate(maxX, maxY))\n ];\n\n if (tileSpaceBounds[0].x - queryPadding < EXTENT && tileSpaceBounds[0].y - queryPadding < EXTENT &&\n tileSpaceBounds[1].x + queryPadding >= 0 && tileSpaceBounds[1].y + queryPadding >= 0) {\n\n const tileSpaceQueryGeometry: Array = queryGeometry.map((c) => tileID.getTilePoint(c));\n const tileSpaceCameraQueryGeometry = cameraQueryGeometry.map((c) => tileID.getTilePoint(c));\n\n tileResults.push({\n tile,\n tileID,\n queryGeometry: tileSpaceQueryGeometry,\n cameraQueryGeometry: tileSpaceCameraQueryGeometry,\n scale\n });\n }\n }\n\n return tileResults;\n }\n\n getVisibleCoordinates(symbolLayer?: boolean): Array {\n const coords = this.getRenderableIds(symbolLayer).map((id) => this._tiles[id].tileID);\n for (const coord of coords) {\n coord.posMatrix = this.transform.calculatePosMatrix(coord.toUnwrapped());\n }\n return coords;\n }\n\n hasTransition() {\n if (this._source.hasTransition()) {\n return true;\n }\n\n if (isRasterType(this._source.type)) {\n for (const id in this._tiles) {\n const tile = this._tiles[id];\n if (tile.fadeEndTime !== undefined && tile.fadeEndTime >= browser.now()) {\n return true;\n }\n }\n }\n\n return false;\n }\n\n /**\n * Set the value of a particular state for a feature\n * @private\n */\n setFeatureState(sourceLayer?: string, featureId: number | string, state: Object) {\n sourceLayer = sourceLayer || '_geojsonTileLayer';\n this._state.updateState(sourceLayer, featureId, state);\n }\n\n /**\n * Resets the value of a particular state key for a feature\n * @private\n */\n removeFeatureState(sourceLayer?: string, featureId?: number | string, key?: string) {\n sourceLayer = sourceLayer || '_geojsonTileLayer';\n this._state.removeFeatureState(sourceLayer, featureId, key);\n }\n\n /**\n * Get the entire state object for a feature\n * @private\n */\n getFeatureState(sourceLayer?: string, featureId: number | string) {\n sourceLayer = sourceLayer || '_geojsonTileLayer';\n return this._state.getState(sourceLayer, featureId);\n }\n\n /**\n * Sets the set of keys that the tile depends on. This allows tiles to\n * be reloaded when their dependencies change.\n * @private\n */\n setDependencies(tileKey: string, namespace: string, dependencies: Array) {\n const tile = this._tiles[tileKey];\n if (tile) {\n tile.setDependencies(namespace, dependencies);\n }\n }\n\n /**\n * Reloads all tiles that depend on the given keys.\n * @private\n */\n reloadTilesForDependencies(namespaces: Array, keys: Array) {\n for (const id in this._tiles) {\n const tile = this._tiles[id];\n if (tile.hasDependency(namespaces, keys)) {\n this._reloadTile(id, 'reloading');\n }\n }\n this._cache.filter(tile => !tile.hasDependency(namespaces, keys));\n }\n}\n\nSourceCache.maxOverzooming = 10;\nSourceCache.maxUnderzooming = 3;\n\nfunction compareTileId(a: OverscaledTileID, b: OverscaledTileID): number {\n // Different copies of the world are sorted based on their distance to the center.\n // Wrap values are converted to unsigned distances by reserving odd number for copies\n // with negative wrap and even numbers for copies with positive wrap.\n const aWrap = Math.abs(a.wrap * 2) - +(a.wrap < 0);\n const bWrap = Math.abs(b.wrap * 2) - +(b.wrap < 0);\n return a.overscaledZ - b.overscaledZ || bWrap - aWrap || b.canonical.y - a.canonical.y || b.canonical.x - a.canonical.x;\n}\n\nfunction isRasterType(type) {\n return type === 'raster' || type === 'image' || type === 'video';\n}\n\nexport default SourceCache;\n", "// @flow\n\nimport window from '../window';\nimport mapboxgl from '../../';\n\nimport type {WorkerInterface} from '../web_worker';\n\nexport default function (): WorkerInterface {\n return (new window.Worker(mapboxgl.workerUrl): any);\n}\n", "// @flow\n\nimport WebWorker from './web_worker';\nimport type {WorkerInterface} from './web_worker';\nimport browser from './browser';\n\nexport const PRELOAD_POOL_ID = 'mapboxgl_preloaded_worker_pool';\n\n/**\n * Constructs a worker pool.\n * @private\n */\nexport default class WorkerPool {\n static workerCount: number;\n\n active: {[_: number | string]: boolean};\n workers: Array;\n\n constructor() {\n this.active = {};\n }\n\n acquire(mapId: number | string): Array {\n if (!this.workers) {\n // Lazily look up the value of mapboxgl.workerCount so that\n // client code has had a chance to set it.\n this.workers = [];\n while (this.workers.length < WorkerPool.workerCount) {\n this.workers.push(new WebWorker());\n }\n }\n\n this.active[mapId] = true;\n return this.workers.slice();\n }\n\n release(mapId: number | string) {\n delete this.active[mapId];\n if (this.numActive() === 0) {\n this.workers.forEach((w) => {\n w.terminate();\n });\n this.workers = (null: any);\n }\n }\n\n isPreloaded(): boolean {\n return !!this.active[PRELOAD_POOL_ID];\n }\n\n numActive(): number {\n return Object.keys(this.active).length;\n }\n}\n\nconst availableLogicalProcessors = Math.floor(browser.hardwareConcurrency / 2);\nWorkerPool.workerCount = Math.max(Math.min(availableLogicalProcessors, 6), 1);\n", "// @flow\n\nimport WorkerPool, {PRELOAD_POOL_ID} from './worker_pool';\n\nlet globalWorkerPool;\n\n/**\n * Creates (if necessary) and returns the single, global WorkerPool instance\n * to be shared across each Map\n * @private\n */\nexport default function getGlobalWorkerPool () {\n if (!globalWorkerPool) {\n globalWorkerPool = new WorkerPool();\n }\n return globalWorkerPool;\n}\n\nexport function prewarm() {\n const workerPool = getGlobalWorkerPool();\n workerPool.acquire(PRELOAD_POOL_ID);\n}\n\nexport function clearPrewarmedResources() {\n const pool = globalWorkerPool;\n if (pool) {\n // Remove the pool only if all maps that referenced the preloaded global worker pool have been removed.\n if (pool.isPreloaded() && pool.numActive() === 1) {\n pool.release(PRELOAD_POOL_ID);\n globalWorkerPool = null;\n } else {\n console.warn('Could not clear WebWorkers since there are active Map instances that still reference it. The pre-warmed WebWorker pool can only be cleared when all map instances have been removed with map.remove()');\n }\n }\n}\n", "\nimport refProperties from './util/ref_properties';\n\nfunction deref(layer, parent) {\n const result = {};\n\n for (const k in layer) {\n if (k !== 'ref') {\n result[k] = layer[k];\n }\n }\n\n refProperties.forEach((k) => {\n if (k in parent) {\n result[k] = parent[k];\n }\n });\n\n return result;\n}\n\nexport default derefLayers;\n\n/**\n * Given an array of layers, some of which may contain `ref` properties\n * whose value is the `id` of another property, return a new array where\n * such layers have been augmented with the 'type', 'source', etc. properties\n * from the parent layer, and the `ref` property has been removed.\n *\n * The input is not modified. The output may contain references to portions\n * of the input.\n *\n * @private\n * @param {Array} layers\n * @returns {Array}\n */\nfunction derefLayers(layers) {\n layers = layers.slice();\n\n const map = Object.create(null);\n for (let i = 0; i < layers.length; i++) {\n map[layers[i].id] = layers[i];\n }\n\n for (let i = 0; i < layers.length; i++) {\n if ('ref' in layers[i]) {\n layers[i] = deref(layers[i], map[layers[i].ref]);\n }\n }\n\n return layers;\n}\n", "\nimport isEqual from './util/deep_equal';\n\nconst operations = {\n\n /*\n * { command: 'setStyle', args: [stylesheet] }\n */\n setStyle: 'setStyle',\n\n /*\n * { command: 'addLayer', args: [layer, 'beforeLayerId'] }\n */\n addLayer: 'addLayer',\n\n /*\n * { command: 'removeLayer', args: ['layerId'] }\n */\n removeLayer: 'removeLayer',\n\n /*\n * { command: 'setPaintProperty', args: ['layerId', 'prop', value] }\n */\n setPaintProperty: 'setPaintProperty',\n\n /*\n * { command: 'setLayoutProperty', args: ['layerId', 'prop', value] }\n */\n setLayoutProperty: 'setLayoutProperty',\n\n /*\n * { command: 'setFilter', args: ['layerId', filter] }\n */\n setFilter: 'setFilter',\n\n /*\n * { command: 'addSource', args: ['sourceId', source] }\n */\n addSource: 'addSource',\n\n /*\n * { command: 'removeSource', args: ['sourceId'] }\n */\n removeSource: 'removeSource',\n\n /*\n * { command: 'setGeoJSONSourceData', args: ['sourceId', data] }\n */\n setGeoJSONSourceData: 'setGeoJSONSourceData',\n\n /*\n * { command: 'setLayerZoomRange', args: ['layerId', 0, 22] }\n */\n setLayerZoomRange: 'setLayerZoomRange',\n\n /*\n * { command: 'setLayerProperty', args: ['layerId', 'prop', value] }\n */\n setLayerProperty: 'setLayerProperty',\n\n /*\n * { command: 'setCenter', args: [[lon, lat]] }\n */\n setCenter: 'setCenter',\n\n /*\n * { command: 'setZoom', args: [zoom] }\n */\n setZoom: 'setZoom',\n\n /*\n * { command: 'setBearing', args: [bearing] }\n */\n setBearing: 'setBearing',\n\n /*\n * { command: 'setPitch', args: [pitch] }\n */\n setPitch: 'setPitch',\n\n /*\n * { command: 'setSprite', args: ['spriteUrl'] }\n */\n setSprite: 'setSprite',\n\n /*\n * { command: 'setGlyphs', args: ['glyphsUrl'] }\n */\n setGlyphs: 'setGlyphs',\n\n /*\n * { command: 'setTransition', args: [transition] }\n */\n setTransition: 'setTransition',\n\n /*\n * { command: 'setLighting', args: [lightProperties] }\n */\n setLight: 'setLight'\n\n};\n\nfunction addSource(sourceId, after, commands) {\n commands.push({command: operations.addSource, args: [sourceId, after[sourceId]]});\n}\n\nfunction removeSource(sourceId, commands, sourcesRemoved) {\n commands.push({command: operations.removeSource, args: [sourceId]});\n sourcesRemoved[sourceId] = true;\n}\n\nfunction updateSource(sourceId, after, commands, sourcesRemoved) {\n removeSource(sourceId, commands, sourcesRemoved);\n addSource(sourceId, after, commands);\n}\n\nfunction canUpdateGeoJSON(before, after, sourceId) {\n let prop;\n for (prop in before[sourceId]) {\n if (!before[sourceId].hasOwnProperty(prop)) continue;\n if (prop !== 'data' && !isEqual(before[sourceId][prop], after[sourceId][prop])) {\n return false;\n }\n }\n for (prop in after[sourceId]) {\n if (!after[sourceId].hasOwnProperty(prop)) continue;\n if (prop !== 'data' && !isEqual(before[sourceId][prop], after[sourceId][prop])) {\n return false;\n }\n }\n return true;\n}\n\nfunction diffSources(before, after, commands, sourcesRemoved) {\n before = before || {};\n after = after || {};\n\n let sourceId;\n\n // look for sources to remove\n for (sourceId in before) {\n if (!before.hasOwnProperty(sourceId)) continue;\n if (!after.hasOwnProperty(sourceId)) {\n removeSource(sourceId, commands, sourcesRemoved);\n }\n }\n\n // look for sources to add/update\n for (sourceId in after) {\n if (!after.hasOwnProperty(sourceId)) continue;\n if (!before.hasOwnProperty(sourceId)) {\n addSource(sourceId, after, commands);\n } else if (!isEqual(before[sourceId], after[sourceId])) {\n if (before[sourceId].type === 'geojson' && after[sourceId].type === 'geojson' && canUpdateGeoJSON(before, after, sourceId)) {\n commands.push({command: operations.setGeoJSONSourceData, args: [sourceId, after[sourceId].data]});\n } else {\n // no update command, must remove then add\n updateSource(sourceId, after, commands, sourcesRemoved);\n }\n }\n }\n}\n\nfunction diffLayerPropertyChanges(before, after, commands, layerId, klass, command) {\n before = before || {};\n after = after || {};\n\n let prop;\n\n for (prop in before) {\n if (!before.hasOwnProperty(prop)) continue;\n if (!isEqual(before[prop], after[prop])) {\n commands.push({command, args: [layerId, prop, after[prop], klass]});\n }\n }\n for (prop in after) {\n if (!after.hasOwnProperty(prop) || before.hasOwnProperty(prop)) continue;\n if (!isEqual(before[prop], after[prop])) {\n commands.push({command, args: [layerId, prop, after[prop], klass]});\n }\n }\n}\n\nfunction pluckId(layer) {\n return layer.id;\n}\nfunction indexById(group, layer) {\n group[layer.id] = layer;\n return group;\n}\n\nfunction diffLayers(before, after, commands) {\n before = before || [];\n after = after || [];\n\n // order of layers by id\n const beforeOrder = before.map(pluckId);\n const afterOrder = after.map(pluckId);\n\n // index of layer by id\n const beforeIndex = before.reduce(indexById, {});\n const afterIndex = after.reduce(indexById, {});\n\n // track order of layers as if they have been mutated\n const tracker = beforeOrder.slice();\n\n // layers that have been added do not need to be diffed\n const clean = Object.create(null);\n\n let i, d, layerId, beforeLayer, afterLayer, insertBeforeLayerId, prop;\n\n // remove layers\n for (i = 0, d = 0; i < beforeOrder.length; i++) {\n layerId = beforeOrder[i];\n if (!afterIndex.hasOwnProperty(layerId)) {\n commands.push({command: operations.removeLayer, args: [layerId]});\n tracker.splice(tracker.indexOf(layerId, d), 1);\n } else {\n // limit where in tracker we need to look for a match\n d++;\n }\n }\n\n // add/reorder layers\n for (i = 0, d = 0; i < afterOrder.length; i++) {\n // work backwards as insert is before an existing layer\n layerId = afterOrder[afterOrder.length - 1 - i];\n\n if (tracker[tracker.length - 1 - i] === layerId) continue;\n\n if (beforeIndex.hasOwnProperty(layerId)) {\n // remove the layer before we insert at the correct position\n commands.push({command: operations.removeLayer, args: [layerId]});\n tracker.splice(tracker.lastIndexOf(layerId, tracker.length - d), 1);\n } else {\n // limit where in tracker we need to look for a match\n d++;\n }\n\n // add layer at correct position\n insertBeforeLayerId = tracker[tracker.length - i];\n commands.push({command: operations.addLayer, args: [afterIndex[layerId], insertBeforeLayerId]});\n tracker.splice(tracker.length - i, 0, layerId);\n clean[layerId] = true;\n }\n\n // update layers\n for (i = 0; i < afterOrder.length; i++) {\n layerId = afterOrder[i];\n beforeLayer = beforeIndex[layerId];\n afterLayer = afterIndex[layerId];\n\n // no need to update if previously added (new or moved)\n if (clean[layerId] || isEqual(beforeLayer, afterLayer)) continue;\n\n // If source, source-layer, or type have changes, then remove the layer\n // and add it back 'from scratch'.\n if (!isEqual(beforeLayer.source, afterLayer.source) || !isEqual(beforeLayer['source-layer'], afterLayer['source-layer']) || !isEqual(beforeLayer.type, afterLayer.type)) {\n commands.push({command: operations.removeLayer, args: [layerId]});\n // we add the layer back at the same position it was already in, so\n // there's no need to update the `tracker`\n insertBeforeLayerId = tracker[tracker.lastIndexOf(layerId) + 1];\n commands.push({command: operations.addLayer, args: [afterLayer, insertBeforeLayerId]});\n continue;\n }\n\n // layout, paint, filter, minzoom, maxzoom\n diffLayerPropertyChanges(beforeLayer.layout, afterLayer.layout, commands, layerId, null, operations.setLayoutProperty);\n diffLayerPropertyChanges(beforeLayer.paint, afterLayer.paint, commands, layerId, null, operations.setPaintProperty);\n if (!isEqual(beforeLayer.filter, afterLayer.filter)) {\n commands.push({command: operations.setFilter, args: [layerId, afterLayer.filter]});\n }\n if (!isEqual(beforeLayer.minzoom, afterLayer.minzoom) || !isEqual(beforeLayer.maxzoom, afterLayer.maxzoom)) {\n commands.push({command: operations.setLayerZoomRange, args: [layerId, afterLayer.minzoom, afterLayer.maxzoom]});\n }\n\n // handle all other layer props, including paint.*\n for (prop in beforeLayer) {\n if (!beforeLayer.hasOwnProperty(prop)) continue;\n if (prop === 'layout' || prop === 'paint' || prop === 'filter' ||\n prop === 'metadata' || prop === 'minzoom' || prop === 'maxzoom') continue;\n if (prop.indexOf('paint.') === 0) {\n diffLayerPropertyChanges(beforeLayer[prop], afterLayer[prop], commands, layerId, prop.slice(6), operations.setPaintProperty);\n } else if (!isEqual(beforeLayer[prop], afterLayer[prop])) {\n commands.push({command: operations.setLayerProperty, args: [layerId, prop, afterLayer[prop]]});\n }\n }\n for (prop in afterLayer) {\n if (!afterLayer.hasOwnProperty(prop) || beforeLayer.hasOwnProperty(prop)) continue;\n if (prop === 'layout' || prop === 'paint' || prop === 'filter' ||\n prop === 'metadata' || prop === 'minzoom' || prop === 'maxzoom') continue;\n if (prop.indexOf('paint.') === 0) {\n diffLayerPropertyChanges(beforeLayer[prop], afterLayer[prop], commands, layerId, prop.slice(6), operations.setPaintProperty);\n } else if (!isEqual(beforeLayer[prop], afterLayer[prop])) {\n commands.push({command: operations.setLayerProperty, args: [layerId, prop, afterLayer[prop]]});\n }\n }\n }\n}\n\n/**\n * Diff two stylesheet\n *\n * Creates semanticly aware diffs that can easily be applied at runtime.\n * Operations produced by the diff closely resemble the mapbox-gl-js API. Any\n * error creating the diff will fall back to the 'setStyle' operation.\n *\n * Example diff:\n * [\n * { command: 'setConstant', args: ['@water', '#0000FF'] },\n * { command: 'setPaintProperty', args: ['background', 'background-color', 'black'] }\n * ]\n *\n * @private\n * @param {*} [before] stylesheet to compare from\n * @param {*} after stylesheet to compare to\n * @returns Array list of changes\n */\nfunction diffStyles(before, after) {\n if (!before) return [{command: operations.setStyle, args: [after]}];\n\n let commands = [];\n\n try {\n // Handle changes to top-level properties\n if (!isEqual(before.version, after.version)) {\n return [{command: operations.setStyle, args: [after]}];\n }\n if (!isEqual(before.center, after.center)) {\n commands.push({command: operations.setCenter, args: [after.center]});\n }\n if (!isEqual(before.zoom, after.zoom)) {\n commands.push({command: operations.setZoom, args: [after.zoom]});\n }\n if (!isEqual(before.bearing, after.bearing)) {\n commands.push({command: operations.setBearing, args: [after.bearing]});\n }\n if (!isEqual(before.pitch, after.pitch)) {\n commands.push({command: operations.setPitch, args: [after.pitch]});\n }\n if (!isEqual(before.sprite, after.sprite)) {\n commands.push({command: operations.setSprite, args: [after.sprite]});\n }\n if (!isEqual(before.glyphs, after.glyphs)) {\n commands.push({command: operations.setGlyphs, args: [after.glyphs]});\n }\n if (!isEqual(before.transition, after.transition)) {\n commands.push({command: operations.setTransition, args: [after.transition]});\n }\n if (!isEqual(before.light, after.light)) {\n commands.push({command: operations.setLight, args: [after.light]});\n }\n\n // Handle changes to `sources`\n // If a source is to be removed, we also--before the removeSource\n // command--need to remove all the style layers that depend on it.\n const sourcesRemoved = {};\n\n // First collect the {add,remove}Source commands\n const removeOrAddSourceCommands = [];\n diffSources(before.sources, after.sources, removeOrAddSourceCommands, sourcesRemoved);\n\n // Push a removeLayer command for each style layer that depends on a\n // source that's being removed.\n // Also, exclude any such layers them from the input to `diffLayers`\n // below, so that diffLayers produces the appropriate `addLayers`\n // command\n const beforeLayers = [];\n if (before.layers) {\n before.layers.forEach((layer) => {\n if (sourcesRemoved[layer.source]) {\n commands.push({command: operations.removeLayer, args: [layer.id]});\n } else {\n beforeLayers.push(layer);\n }\n });\n }\n commands = commands.concat(removeOrAddSourceCommands);\n\n // Handle changes to `layers`\n diffLayers(beforeLayers, after.layers, commands);\n\n } catch (e) {\n // fall back to setStyle\n console.warn('Unable to compute style diff:', e);\n commands = [{command: operations.setStyle, args: [after]}];\n }\n\n return commands;\n}\n\nexport default diffStyles;\nexport {operations};\n", "// @flow\n\nimport {clamp} from '../util/util';\nimport Point from '@mapbox/point-geometry';\nimport assert from 'assert';\n\nclass PathInterpolator {\n points: Array;\n length: number;\n paddedLength: number;\n padding: number;\n _distances: Array;\n\n constructor(points_: ?Array, padding_: ?number) {\n this.reset(points_, padding_);\n }\n\n reset(points_: ?Array, padding_: ?number) {\n this.points = points_ || [];\n\n // Compute cumulative distance from first point to every other point in the segment.\n // Last entry in the array is total length of the path\n this._distances = [0.0];\n\n for (let i = 1; i < this.points.length; i++) {\n this._distances[i] = this._distances[i - 1] + this.points[i].dist(this.points[i - 1]);\n }\n\n this.length = this._distances[this._distances.length - 1];\n this.padding = Math.min(padding_ || 0, this.length * 0.5);\n this.paddedLength = this.length - this.padding * 2.0;\n }\n\n lerp(t: number): Point {\n assert(this.points.length > 0);\n if (this.points.length === 1) {\n return this.points[0];\n }\n\n t = clamp(t, 0, 1);\n\n // Find the correct segment [p0, p1] where p0 <= x < p1\n let currentIndex = 1;\n let distOfCurrentIdx = this._distances[currentIndex];\n const distToTarget = t * this.paddedLength + this.padding;\n\n while (distOfCurrentIdx < distToTarget && currentIndex < this._distances.length) {\n distOfCurrentIdx = this._distances[++currentIndex];\n }\n\n // Interpolate between the two points of the segment\n const idxOfPrevPoint = currentIndex - 1;\n const distOfPrevIdx = this._distances[idxOfPrevPoint];\n const segmentLength = distOfCurrentIdx - distOfPrevIdx;\n const segmentT = segmentLength > 0 ? (distToTarget - distOfPrevIdx) / segmentLength : 0;\n\n return this.points[idxOfPrevPoint].mult(1.0 - segmentT).add(this.points[currentIndex].mult(segmentT));\n }\n}\n\nexport default PathInterpolator;\n", "// @flow\n\n/**\n * GridIndex is a data structure for testing the intersection of\n * circles and rectangles in a 2d plane.\n * It is optimized for rapid insertion and querying.\n * GridIndex splits the plane into a set of \"cells\" and keeps track\n * of which geometries intersect with each cell. At query time,\n * full geometry comparisons are only done for items that share\n * at least one cell. As long as the geometries are relatively\n * uniformly distributed across the plane, this greatly reduces\n * the number of comparisons necessary.\n *\n * @private\n */\nclass GridIndex {\n circleKeys: Array;\n boxKeys: Array;\n boxCells: Array>;\n circleCells: Array>;\n bboxes: Array;\n circles: Array;\n xCellCount: number;\n yCellCount: number;\n width: number;\n height: number;\n xScale: number;\n yScale: number;\n boxUid: number;\n circleUid: number;\n\n constructor (width: number, height: number, cellSize: number) {\n const boxCells = this.boxCells = [];\n const circleCells = this.circleCells = [];\n\n // More cells -> fewer geometries to check per cell, but items tend\n // to be split across more cells.\n // Sweet spot allows most small items to fit in one cell\n this.xCellCount = Math.ceil(width / cellSize);\n this.yCellCount = Math.ceil(height / cellSize);\n\n for (let i = 0; i < this.xCellCount * this.yCellCount; i++) {\n boxCells.push([]);\n circleCells.push([]);\n }\n this.circleKeys = [];\n this.boxKeys = [];\n this.bboxes = [];\n this.circles = [];\n\n this.width = width;\n this.height = height;\n this.xScale = this.xCellCount / width;\n this.yScale = this.yCellCount / height;\n this.boxUid = 0;\n this.circleUid = 0;\n }\n\n keysLength() {\n return this.boxKeys.length + this.circleKeys.length;\n }\n\n insert(key: any, x1: number, y1: number, x2: number, y2: number) {\n this._forEachCell(x1, y1, x2, y2, this._insertBoxCell, this.boxUid++);\n this.boxKeys.push(key);\n this.bboxes.push(x1);\n this.bboxes.push(y1);\n this.bboxes.push(x2);\n this.bboxes.push(y2);\n }\n\n insertCircle(key: any, x: number, y: number, radius: number) {\n // Insert circle into grid for all cells in the circumscribing square\n // It's more than necessary (by a factor of 4/PI), but fast to insert\n this._forEachCell(x - radius, y - radius, x + radius, y + radius, this._insertCircleCell, this.circleUid++);\n this.circleKeys.push(key);\n this.circles.push(x);\n this.circles.push(y);\n this.circles.push(radius);\n }\n\n _insertBoxCell(x1: number, y1: number, x2: number, y2: number, cellIndex: number, uid: number) {\n this.boxCells[cellIndex].push(uid);\n }\n\n _insertCircleCell(x1: number, y1: number, x2: number, y2: number, cellIndex: number, uid: number) {\n this.circleCells[cellIndex].push(uid);\n }\n\n _query(x1: number, y1: number, x2: number, y2: number, hitTest: boolean, predicate?: any) {\n if (x2 < 0 || x1 > this.width || y2 < 0 || y1 > this.height) {\n return hitTest ? false : [];\n }\n const result = [];\n if (x1 <= 0 && y1 <= 0 && this.width <= x2 && this.height <= y2) {\n if (hitTest) {\n return true;\n }\n for (let boxUid = 0; boxUid < this.boxKeys.length; boxUid++) {\n result.push({\n key: this.boxKeys[boxUid],\n x1: this.bboxes[boxUid * 4],\n y1: this.bboxes[boxUid * 4 + 1],\n x2: this.bboxes[boxUid * 4 + 2],\n y2: this.bboxes[boxUid * 4 + 3]\n });\n }\n for (let circleUid = 0; circleUid < this.circleKeys.length; circleUid++) {\n const x = this.circles[circleUid * 3];\n const y = this.circles[circleUid * 3 + 1];\n const radius = this.circles[circleUid * 3 + 2];\n result.push({\n key: this.circleKeys[circleUid],\n x1: x - radius,\n y1: y - radius,\n x2: x + radius,\n y2: y + radius\n });\n }\n return predicate ? result.filter(predicate) : result;\n } else {\n const queryArgs = {\n hitTest,\n seenUids: {box: {}, circle: {}}\n };\n this._forEachCell(x1, y1, x2, y2, this._queryCell, result, queryArgs, predicate);\n return hitTest ? result.length > 0 : result;\n }\n }\n\n _queryCircle(x: number, y: number, radius: number, hitTest: boolean, predicate?: any) {\n // Insert circle into grid for all cells in the circumscribing square\n // It's more than necessary (by a factor of 4/PI), but fast to insert\n const x1 = x - radius;\n const x2 = x + radius;\n const y1 = y - radius;\n const y2 = y + radius;\n if (x2 < 0 || x1 > this.width || y2 < 0 || y1 > this.height) {\n return hitTest ? false : [];\n }\n\n // Box query early exits if the bounding box is larger than the grid, but we don't do\n // the equivalent calculation for circle queries because early exit is less likely\n // and the calculation is more expensive\n const result = [];\n const queryArgs = {\n hitTest,\n circle: {x, y, radius},\n seenUids: {box: {}, circle: {}}\n };\n this._forEachCell(x1, y1, x2, y2, this._queryCellCircle, result, queryArgs, predicate);\n return hitTest ? result.length > 0 : result;\n }\n\n query(x1: number, y1: number, x2: number, y2: number, predicate?: any): Array {\n return (this._query(x1, y1, x2, y2, false, predicate): any);\n }\n\n hitTest(x1: number, y1: number, x2: number, y2: number, predicate?: any): boolean {\n return (this._query(x1, y1, x2, y2, true, predicate): any);\n }\n\n hitTestCircle(x: number, y: number, radius: number, predicate?: any): boolean {\n return (this._queryCircle(x, y, radius, true, predicate): any);\n }\n\n _queryCell(x1: number, y1: number, x2: number, y2: number, cellIndex: number, result: any, queryArgs: any, predicate?: any) {\n const seenUids = queryArgs.seenUids;\n const boxCell = this.boxCells[cellIndex];\n if (boxCell !== null) {\n const bboxes = this.bboxes;\n for (const boxUid of boxCell) {\n if (!seenUids.box[boxUid]) {\n seenUids.box[boxUid] = true;\n const offset = boxUid * 4;\n if ((x1 <= bboxes[offset + 2]) &&\n (y1 <= bboxes[offset + 3]) &&\n (x2 >= bboxes[offset + 0]) &&\n (y2 >= bboxes[offset + 1]) &&\n (!predicate || predicate(this.boxKeys[boxUid]))) {\n if (queryArgs.hitTest) {\n result.push(true);\n return true;\n } else {\n result.push({\n key: this.boxKeys[boxUid],\n x1: bboxes[offset],\n y1: bboxes[offset + 1],\n x2: bboxes[offset + 2],\n y2: bboxes[offset + 3]\n });\n }\n }\n }\n }\n }\n const circleCell = this.circleCells[cellIndex];\n if (circleCell !== null) {\n const circles = this.circles;\n for (const circleUid of circleCell) {\n if (!seenUids.circle[circleUid]) {\n seenUids.circle[circleUid] = true;\n const offset = circleUid * 3;\n if (this._circleAndRectCollide(\n circles[offset],\n circles[offset + 1],\n circles[offset + 2],\n x1,\n y1,\n x2,\n y2) &&\n (!predicate || predicate(this.circleKeys[circleUid]))) {\n if (queryArgs.hitTest) {\n result.push(true);\n return true;\n } else {\n const x = circles[offset];\n const y = circles[offset + 1];\n const radius = circles[offset + 2];\n result.push({\n key: this.circleKeys[circleUid],\n x1: x - radius,\n y1: y - radius,\n x2: x + radius,\n y2: y + radius\n });\n }\n }\n }\n }\n }\n }\n\n _queryCellCircle(x1: number, y1: number, x2: number, y2: number, cellIndex: number, result: any, queryArgs: any, predicate?: any) {\n const circle = queryArgs.circle;\n const seenUids = queryArgs.seenUids;\n const boxCell = this.boxCells[cellIndex];\n if (boxCell !== null) {\n const bboxes = this.bboxes;\n for (const boxUid of boxCell) {\n if (!seenUids.box[boxUid]) {\n seenUids.box[boxUid] = true;\n const offset = boxUid * 4;\n if (this._circleAndRectCollide(\n circle.x,\n circle.y,\n circle.radius,\n bboxes[offset + 0],\n bboxes[offset + 1],\n bboxes[offset + 2],\n bboxes[offset + 3]) &&\n (!predicate || predicate(this.boxKeys[boxUid]))) {\n result.push(true);\n return true;\n }\n }\n }\n }\n\n const circleCell = this.circleCells[cellIndex];\n if (circleCell !== null) {\n const circles = this.circles;\n for (const circleUid of circleCell) {\n if (!seenUids.circle[circleUid]) {\n seenUids.circle[circleUid] = true;\n const offset = circleUid * 3;\n if (this._circlesCollide(\n circles[offset],\n circles[offset + 1],\n circles[offset + 2],\n circle.x,\n circle.y,\n circle.radius) &&\n (!predicate || predicate(this.circleKeys[circleUid]))) {\n result.push(true);\n return true;\n }\n }\n }\n }\n }\n\n _forEachCell(x1: number, y1: number, x2: number, y2: number, fn: any, arg1: any, arg2?: any, predicate?: any) {\n const cx1 = this._convertToXCellCoord(x1);\n const cy1 = this._convertToYCellCoord(y1);\n const cx2 = this._convertToXCellCoord(x2);\n const cy2 = this._convertToYCellCoord(y2);\n\n for (let x = cx1; x <= cx2; x++) {\n for (let y = cy1; y <= cy2; y++) {\n const cellIndex = this.xCellCount * y + x;\n if (fn.call(this, x1, y1, x2, y2, cellIndex, arg1, arg2, predicate)) return;\n }\n }\n }\n\n _convertToXCellCoord(x: number) {\n return Math.max(0, Math.min(this.xCellCount - 1, Math.floor(x * this.xScale)));\n }\n\n _convertToYCellCoord(y: number) {\n return Math.max(0, Math.min(this.yCellCount - 1, Math.floor(y * this.yScale)));\n }\n\n _circlesCollide(x1: number, y1: number, r1: number, x2: number, y2: number, r2: number): boolean {\n const dx = x2 - x1;\n const dy = y2 - y1;\n const bothRadii = r1 + r2;\n return (bothRadii * bothRadii) > (dx * dx + dy * dy);\n }\n\n _circleAndRectCollide(circleX: number, circleY: number, radius: number, x1: number, y1: number, x2: number, y2: number): boolean {\n const halfRectWidth = (x2 - x1) / 2;\n const distX = Math.abs(circleX - (x1 + halfRectWidth));\n if (distX > (halfRectWidth + radius)) {\n return false;\n }\n\n const halfRectHeight = (y2 - y1) / 2;\n const distY = Math.abs(circleY - (y1 + halfRectHeight));\n if (distY > (halfRectHeight + radius)) {\n return false;\n }\n\n if (distX <= halfRectWidth || distY <= halfRectHeight) {\n return true;\n }\n\n const dx = distX - halfRectWidth;\n const dy = distY - halfRectHeight;\n return (dx * dx + dy * dy <= (radius * radius));\n }\n}\n\nexport default GridIndex;\n", "// @flow\n\nimport Point from '@mapbox/point-geometry';\n\nimport {mat4, vec4} from 'gl-matrix';\nimport * as symbolSize from './symbol_size';\nimport {addDynamicAttributes} from '../data/bucket/symbol_bucket';\n\nimport type Painter from '../render/painter';\nimport type Transform from '../geo/transform';\nimport type SymbolBucket from '../data/bucket/symbol_bucket';\nimport type {\n GlyphOffsetArray,\n SymbolLineVertexArray,\n SymbolDynamicLayoutArray\n} from '../data/array_types';\nimport {WritingMode} from '../symbol/shaping';\n\nexport {updateLineLabels, hideGlyphs, getLabelPlaneMatrix, getGlCoordMatrix, project, getPerspectiveRatio, placeFirstAndLastGlyph, placeGlyphAlongLine, xyTransformMat4};\n\n/*\n * # Overview of coordinate spaces\n *\n * ## Tile coordinate spaces\n * Each label has an anchor. Some labels have corresponding line geometries.\n * The points for both anchors and lines are stored in tile units. Each tile has it's own\n * coordinate space going from (0, 0) at the top left to (EXTENT, EXTENT) at the bottom right.\n *\n * ## GL coordinate space\n * At the end of everything, the vertex shader needs to produce a position in GL coordinate space,\n * which is (-1, 1) at the top left and (1, -1) in the bottom right.\n *\n * ## Map pixel coordinate spaces\n * Each tile has a pixel coordinate space. It's just the tile units scaled so that one unit is\n * whatever counts as 1 pixel at the current zoom.\n * This space is used for pitch-alignment=map, rotation-alignment=map\n *\n * ## Rotated map pixel coordinate spaces\n * Like the above, but rotated so axis of the space are aligned with the viewport instead of the tile.\n * This space is used for pitch-alignment=map, rotation-alignment=viewport\n *\n * ## Viewport pixel coordinate space\n * (0, 0) is at the top left of the canvas and (pixelWidth, pixelHeight) is at the bottom right corner\n * of the canvas. This space is used for pitch-alignment=viewport\n *\n *\n * # Vertex projection\n * It goes roughly like this:\n * 1. project the anchor and line from tile units into the correct label coordinate space\n * - map pixel space pitch-alignment=map rotation-alignment=map\n * - rotated map pixel space pitch-alignment=map rotation-alignment=viewport\n * - viewport pixel space pitch-alignment=viewport rotation-alignment=*\n * 2. if the label follows a line, find the point along the line that is the correct distance from the anchor.\n * 3. add the glyph's corner offset to the point from step 3\n * 4. convert from the label coordinate space to gl coordinates\n *\n * For horizontal labels we want to do step 1 in the shader for performance reasons (no cpu work).\n * This is what `u_label_plane_matrix` is used for.\n * For labels aligned with lines we have to steps 1 and 2 on the cpu since we need access to the line geometry.\n * This is what `updateLineLabels(...)` does.\n * Since the conversion is handled on the cpu we just set `u_label_plane_matrix` to an identity matrix.\n *\n * Steps 3 and 4 are done in the shaders for all labels.\n */\n\n/*\n * Returns a matrix for converting from tile units to the correct label coordinate space.\n */\nfunction getLabelPlaneMatrix(posMatrix: mat4,\n pitchWithMap: boolean,\n rotateWithMap: boolean,\n transform: Transform,\n pixelsToTileUnits: number) {\n const m = mat4.create();\n if (pitchWithMap) {\n mat4.scale(m, m, [1 / pixelsToTileUnits, 1 / pixelsToTileUnits, 1]);\n if (!rotateWithMap) {\n mat4.rotateZ(m, m, transform.angle);\n }\n } else {\n mat4.multiply(m, transform.labelPlaneMatrix, posMatrix);\n }\n return m;\n}\n\n/*\n * Returns a matrix for converting from the correct label coordinate space to gl coords.\n */\nfunction getGlCoordMatrix(posMatrix: mat4,\n pitchWithMap: boolean,\n rotateWithMap: boolean,\n transform: Transform,\n pixelsToTileUnits: number) {\n if (pitchWithMap) {\n const m = mat4.clone(posMatrix);\n mat4.scale(m, m, [pixelsToTileUnits, pixelsToTileUnits, 1]);\n if (!rotateWithMap) {\n mat4.rotateZ(m, m, -transform.angle);\n }\n return m;\n } else {\n return transform.glCoordMatrix;\n }\n}\n\nfunction project(point: Point, matrix: mat4) {\n const pos = [point.x, point.y, 0, 1];\n xyTransformMat4(pos, pos, matrix);\n const w = pos[3];\n return {\n point: new Point(pos[0] / w, pos[1] / w),\n signedDistanceFromCamera: w\n };\n}\n\nfunction getPerspectiveRatio(cameraToCenterDistance: number, signedDistanceFromCamera: number): number {\n return 0.5 + 0.5 * (cameraToCenterDistance / signedDistanceFromCamera);\n}\n\nfunction isVisible(anchorPos: [number, number, number, number],\n clippingBuffer: [number, number]) {\n const x = anchorPos[0] / anchorPos[3];\n const y = anchorPos[1] / anchorPos[3];\n const inPaddedViewport = (\n x >= -clippingBuffer[0] &&\n x <= clippingBuffer[0] &&\n y >= -clippingBuffer[1] &&\n y <= clippingBuffer[1]);\n return inPaddedViewport;\n}\n\n/*\n * Update the `dynamicLayoutVertexBuffer` for the buffer with the correct glyph positions for the current map view.\n * This is only run on labels that are aligned with lines. Horizontal labels are handled entirely in the shader.\n */\nfunction updateLineLabels(bucket: SymbolBucket,\n posMatrix: mat4,\n painter: Painter,\n isText: boolean,\n labelPlaneMatrix: mat4,\n glCoordMatrix: mat4,\n pitchWithMap: boolean,\n keepUpright: boolean) {\n\n const sizeData = isText ? bucket.textSizeData : bucket.iconSizeData;\n const partiallyEvaluatedSize = symbolSize.evaluateSizeForZoom(sizeData, painter.transform.zoom);\n\n const clippingBuffer = [256 / painter.width * 2 + 1, 256 / painter.height * 2 + 1];\n\n const dynamicLayoutVertexArray = isText ?\n bucket.text.dynamicLayoutVertexArray :\n bucket.icon.dynamicLayoutVertexArray;\n dynamicLayoutVertexArray.clear();\n\n const lineVertexArray = bucket.lineVertexArray;\n const placedSymbols = isText ? bucket.text.placedSymbolArray : bucket.icon.placedSymbolArray;\n\n const aspectRatio = painter.transform.width / painter.transform.height;\n\n let useVertical = false;\n\n for (let s = 0; s < placedSymbols.length; s++) {\n const symbol: any = placedSymbols.get(s);\n\n // Don't do calculations for vertical glyphs unless the previous symbol was horizontal\n // and we determined that vertical glyphs were necessary.\n // Also don't do calculations for symbols that are collided and fully faded out\n if (symbol.hidden || symbol.writingMode === WritingMode.vertical && !useVertical) {\n hideGlyphs(symbol.numGlyphs, dynamicLayoutVertexArray);\n continue;\n }\n // Awkward... but we're counting on the paired \"vertical\" symbol coming immediately after its horizontal counterpart\n useVertical = false;\n\n const anchorPos = [symbol.anchorX, symbol.anchorY, 0, 1];\n vec4.transformMat4(anchorPos, anchorPos, posMatrix);\n\n // Don't bother calculating the correct point for invisible labels.\n if (!isVisible(anchorPos, clippingBuffer)) {\n hideGlyphs(symbol.numGlyphs, dynamicLayoutVertexArray);\n continue;\n }\n\n const cameraToAnchorDistance = anchorPos[3];\n const perspectiveRatio = getPerspectiveRatio(painter.transform.cameraToCenterDistance, cameraToAnchorDistance);\n\n const fontSize = symbolSize.evaluateSizeForFeature(sizeData, partiallyEvaluatedSize, symbol);\n const pitchScaledFontSize = pitchWithMap ? fontSize / perspectiveRatio : fontSize * perspectiveRatio;\n\n const tileAnchorPoint = new Point(symbol.anchorX, symbol.anchorY);\n const anchorPoint = project(tileAnchorPoint, labelPlaneMatrix).point;\n const projectionCache = {};\n\n const placeUnflipped: any = placeGlyphsAlongLine(symbol, pitchScaledFontSize, false /*unflipped*/, keepUpright, posMatrix, labelPlaneMatrix, glCoordMatrix,\n bucket.glyphOffsetArray, lineVertexArray, dynamicLayoutVertexArray, anchorPoint, tileAnchorPoint, projectionCache, aspectRatio);\n\n useVertical = placeUnflipped.useVertical;\n\n if (placeUnflipped.notEnoughRoom || useVertical ||\n (placeUnflipped.needsFlipping &&\n placeGlyphsAlongLine(symbol, pitchScaledFontSize, true /*flipped*/, keepUpright, posMatrix, labelPlaneMatrix, glCoordMatrix,\n bucket.glyphOffsetArray, lineVertexArray, dynamicLayoutVertexArray, anchorPoint, tileAnchorPoint, projectionCache, aspectRatio).notEnoughRoom)) {\n hideGlyphs(symbol.numGlyphs, dynamicLayoutVertexArray);\n }\n }\n\n if (isText) {\n bucket.text.dynamicLayoutVertexBuffer.updateData(dynamicLayoutVertexArray);\n } else {\n bucket.icon.dynamicLayoutVertexBuffer.updateData(dynamicLayoutVertexArray);\n }\n}\n\nfunction placeFirstAndLastGlyph(fontScale: number, glyphOffsetArray: GlyphOffsetArray, lineOffsetX: number, lineOffsetY: number, flip: boolean, anchorPoint: Point, tileAnchorPoint: Point, symbol: any, lineVertexArray: SymbolLineVertexArray, labelPlaneMatrix: mat4, projectionCache: any) {\n const glyphEndIndex = symbol.glyphStartIndex + symbol.numGlyphs;\n const lineStartIndex = symbol.lineStartIndex;\n const lineEndIndex = symbol.lineStartIndex + symbol.lineLength;\n\n const firstGlyphOffset = glyphOffsetArray.getoffsetX(symbol.glyphStartIndex);\n const lastGlyphOffset = glyphOffsetArray.getoffsetX(glyphEndIndex - 1);\n\n const firstPlacedGlyph = placeGlyphAlongLine(fontScale * firstGlyphOffset, lineOffsetX, lineOffsetY, flip, anchorPoint, tileAnchorPoint, symbol.segment,\n lineStartIndex, lineEndIndex, lineVertexArray, labelPlaneMatrix, projectionCache);\n if (!firstPlacedGlyph)\n return null;\n\n const lastPlacedGlyph = placeGlyphAlongLine(fontScale * lastGlyphOffset, lineOffsetX, lineOffsetY, flip, anchorPoint, tileAnchorPoint, symbol.segment,\n lineStartIndex, lineEndIndex, lineVertexArray, labelPlaneMatrix, projectionCache);\n if (!lastPlacedGlyph)\n return null;\n\n return {first: firstPlacedGlyph, last: lastPlacedGlyph};\n}\n\nfunction requiresOrientationChange(writingMode, firstPoint, lastPoint, aspectRatio) {\n if (writingMode === WritingMode.horizontal) {\n // On top of choosing whether to flip, choose whether to render this version of the glyphs or the alternate\n // vertical glyphs. We can't just filter out vertical glyphs in the horizontal range because the horizontal\n // and vertical versions can have slightly different projections which could lead to angles where both or\n // neither showed.\n const rise = Math.abs(lastPoint.y - firstPoint.y);\n const run = Math.abs(lastPoint.x - firstPoint.x) * aspectRatio;\n if (rise > run) {\n return {useVertical: true};\n }\n }\n\n if (writingMode === WritingMode.vertical ? firstPoint.y < lastPoint.y : firstPoint.x > lastPoint.x) {\n // Includes \"horizontalOnly\" case for labels without vertical glyphs\n return {needsFlipping: true};\n }\n\n return null;\n}\n\nfunction placeGlyphsAlongLine(symbol, fontSize, flip, keepUpright, posMatrix, labelPlaneMatrix, glCoordMatrix, glyphOffsetArray, lineVertexArray, dynamicLayoutVertexArray, anchorPoint, tileAnchorPoint, projectionCache, aspectRatio) {\n const fontScale = fontSize / 24;\n const lineOffsetX = symbol.lineOffsetX * fontScale;\n const lineOffsetY = symbol.lineOffsetY * fontScale;\n\n let placedGlyphs;\n if (symbol.numGlyphs > 1) {\n const glyphEndIndex = symbol.glyphStartIndex + symbol.numGlyphs;\n const lineStartIndex = symbol.lineStartIndex;\n const lineEndIndex = symbol.lineStartIndex + symbol.lineLength;\n\n // Place the first and the last glyph in the label first, so we can figure out\n // the overall orientation of the label and determine whether it needs to be flipped in keepUpright mode\n const firstAndLastGlyph = placeFirstAndLastGlyph(fontScale, glyphOffsetArray, lineOffsetX, lineOffsetY, flip, anchorPoint, tileAnchorPoint, symbol, lineVertexArray, labelPlaneMatrix, projectionCache);\n if (!firstAndLastGlyph) {\n return {notEnoughRoom: true};\n }\n const firstPoint = project(firstAndLastGlyph.first.point, glCoordMatrix).point;\n const lastPoint = project(firstAndLastGlyph.last.point, glCoordMatrix).point;\n\n if (keepUpright && !flip) {\n const orientationChange = requiresOrientationChange(symbol.writingMode, firstPoint, lastPoint, aspectRatio);\n if (orientationChange) {\n return orientationChange;\n }\n }\n\n placedGlyphs = [firstAndLastGlyph.first];\n for (let glyphIndex = symbol.glyphStartIndex + 1; glyphIndex < glyphEndIndex - 1; glyphIndex++) {\n // Since first and last glyph fit on the line, we're sure that the rest of the glyphs can be placed\n // $FlowFixMe\n placedGlyphs.push(placeGlyphAlongLine(fontScale * glyphOffsetArray.getoffsetX(glyphIndex), lineOffsetX, lineOffsetY, flip, anchorPoint, tileAnchorPoint, symbol.segment,\n lineStartIndex, lineEndIndex, lineVertexArray, labelPlaneMatrix, projectionCache));\n }\n placedGlyphs.push(firstAndLastGlyph.last);\n } else {\n // Only a single glyph to place\n // So, determine whether to flip based on projected angle of the line segment it's on\n if (keepUpright && !flip) {\n const a = project(tileAnchorPoint, posMatrix).point;\n const tileVertexIndex = (symbol.lineStartIndex + symbol.segment + 1);\n // $FlowFixMe\n const tileSegmentEnd = new Point(lineVertexArray.getx(tileVertexIndex), lineVertexArray.gety(tileVertexIndex));\n const projectedVertex = project(tileSegmentEnd, posMatrix);\n // We know the anchor will be in the viewport, but the end of the line segment may be\n // behind the plane of the camera, in which case we can use a point at any arbitrary (closer)\n // point on the segment.\n const b = (projectedVertex.signedDistanceFromCamera > 0) ?\n projectedVertex.point :\n projectTruncatedLineSegment(tileAnchorPoint, tileSegmentEnd, a, 1, posMatrix);\n\n const orientationChange = requiresOrientationChange(symbol.writingMode, a, b, aspectRatio);\n if (orientationChange) {\n return orientationChange;\n }\n }\n // $FlowFixMe\n const singleGlyph = placeGlyphAlongLine(fontScale * glyphOffsetArray.getoffsetX(symbol.glyphStartIndex), lineOffsetX, lineOffsetY, flip, anchorPoint, tileAnchorPoint, symbol.segment,\n symbol.lineStartIndex, symbol.lineStartIndex + symbol.lineLength, lineVertexArray, labelPlaneMatrix, projectionCache);\n if (!singleGlyph)\n return {notEnoughRoom: true};\n\n placedGlyphs = [singleGlyph];\n }\n\n for (const glyph: any of placedGlyphs) {\n addDynamicAttributes(dynamicLayoutVertexArray, glyph.point, glyph.angle);\n }\n return {};\n}\n\nfunction projectTruncatedLineSegment(previousTilePoint: Point, currentTilePoint: Point, previousProjectedPoint: Point, minimumLength: number, projectionMatrix: mat4) {\n // We are assuming \"previousTilePoint\" won't project to a point within one unit of the camera plane\n // If it did, that would mean our label extended all the way out from within the viewport to a (very distant)\n // point near the plane of the camera. We wouldn't be able to render the label anyway once it crossed the\n // plane of the camera.\n const projectedUnitVertex = project(previousTilePoint.add(previousTilePoint.sub(currentTilePoint)._unit()), projectionMatrix).point;\n const projectedUnitSegment = previousProjectedPoint.sub(projectedUnitVertex);\n\n return previousProjectedPoint.add(projectedUnitSegment._mult(minimumLength / projectedUnitSegment.mag()));\n}\n\nfunction placeGlyphAlongLine(offsetX: number,\n lineOffsetX: number,\n lineOffsetY: number,\n flip: boolean,\n anchorPoint: Point,\n tileAnchorPoint: Point,\n anchorSegment: number,\n lineStartIndex: number,\n lineEndIndex: number,\n lineVertexArray: SymbolLineVertexArray,\n labelPlaneMatrix: mat4,\n projectionCache: {[_: number]: Point}) {\n\n const combinedOffsetX = flip ?\n offsetX - lineOffsetX :\n offsetX + lineOffsetX;\n\n let dir = combinedOffsetX > 0 ? 1 : -1;\n\n let angle = 0;\n if (flip) {\n // The label needs to be flipped to keep text upright.\n // Iterate in the reverse direction.\n dir *= -1;\n angle = Math.PI;\n }\n\n if (dir < 0) angle += Math.PI;\n\n let currentIndex = dir > 0 ?\n lineStartIndex + anchorSegment :\n lineStartIndex + anchorSegment + 1;\n\n let current = anchorPoint;\n let prev = anchorPoint;\n let distanceToPrev = 0;\n let currentSegmentDistance = 0;\n const absOffsetX = Math.abs(combinedOffsetX);\n const pathVertices = [];\n\n while (distanceToPrev + currentSegmentDistance <= absOffsetX) {\n currentIndex += dir;\n\n // offset does not fit on the projected line\n if (currentIndex < lineStartIndex || currentIndex >= lineEndIndex)\n return null;\n\n prev = current;\n pathVertices.push(current);\n\n current = projectionCache[currentIndex];\n if (current === undefined) {\n const currentVertex = new Point(lineVertexArray.getx(currentIndex), lineVertexArray.gety(currentIndex));\n const projection = project(currentVertex, labelPlaneMatrix);\n if (projection.signedDistanceFromCamera > 0) {\n current = projectionCache[currentIndex] = projection.point;\n } else {\n // The vertex is behind the plane of the camera, so we can't project it\n // Instead, we'll create a vertex along the line that's far enough to include the glyph\n const previousLineVertexIndex = currentIndex - dir;\n const previousTilePoint = distanceToPrev === 0 ?\n tileAnchorPoint :\n new Point(lineVertexArray.getx(previousLineVertexIndex), lineVertexArray.gety(previousLineVertexIndex));\n // Don't cache because the new vertex might not be far enough out for future glyphs on the same segment\n current = projectTruncatedLineSegment(previousTilePoint, currentVertex, prev, absOffsetX - distanceToPrev + 1, labelPlaneMatrix);\n }\n }\n\n distanceToPrev += currentSegmentDistance;\n currentSegmentDistance = prev.dist(current);\n }\n\n // The point is on the current segment. Interpolate to find it.\n const segmentInterpolationT = (absOffsetX - distanceToPrev) / currentSegmentDistance;\n const prevToCurrent = current.sub(prev);\n const p = prevToCurrent.mult(segmentInterpolationT)._add(prev);\n\n // offset the point from the line to text-offset and icon-offset\n p._add(prevToCurrent._unit()._perp()._mult(lineOffsetY * dir));\n\n const segmentAngle = angle + Math.atan2(current.y - prev.y, current.x - prev.x);\n\n pathVertices.push(p);\n\n return {\n point: p,\n angle: segmentAngle,\n path: pathVertices\n };\n}\n\nconst hiddenGlyphAttributes = new Float32Array([-Infinity, -Infinity, 0, -Infinity, -Infinity, 0, -Infinity, -Infinity, 0, -Infinity, -Infinity, 0]);\n\n// Hide them by moving them offscreen. We still need to add them to the buffer\n// because the dynamic buffer is paired with a static buffer that doesn't get updated.\nfunction hideGlyphs(num: number, dynamicLayoutVertexArray: SymbolDynamicLayoutArray) {\n for (let i = 0; i < num; i++) {\n const offset = dynamicLayoutVertexArray.length;\n dynamicLayoutVertexArray.resize(offset + 4);\n // Since all hidden glyphs have the same attributes, we can build up the array faster with a single call to Float32Array.set\n // for each set of four vertices, instead of calling addDynamicAttributes for each vertex.\n dynamicLayoutVertexArray.float32.set(hiddenGlyphAttributes, offset * 3);\n }\n}\n\n// For line label layout, we're not using z output and our w input is always 1\n// This custom matrix transformation ignores those components to make projection faster\nfunction xyTransformMat4(out: vec4, a: vec4, m: mat4) {\n const x = a[0], y = a[1];\n out[0] = m[0] * x + m[4] * y + m[12];\n out[1] = m[1] * x + m[5] * y + m[13];\n out[3] = m[3] * x + m[7] * y + m[15];\n return out;\n}\n", "// @flow\n\nimport Point from '@mapbox/point-geometry';\nimport clipLine from './clip_line';\nimport PathInterpolator from './path_interpolator';\n\nimport * as intersectionTests from '../util/intersection_tests';\nimport Grid from './grid_index';\nimport {mat4} from 'gl-matrix';\nimport ONE_EM from '../symbol/one_em';\nimport assert from 'assert';\n\nimport * as projection from '../symbol/projection';\n\nimport type Transform from '../geo/transform';\nimport type {SingleCollisionBox} from '../data/bucket/symbol_bucket';\nimport type {\n GlyphOffsetArray,\n SymbolLineVertexArray\n} from '../data/array_types';\n\n// When a symbol crosses the edge that causes it to be included in\n// collision detection, it will cause changes in the symbols around\n// it. This constant specifies how many pixels to pad the edge of\n// the viewport for collision detection so that the bulk of the changes\n// occur offscreen. Making this constant greater increases label\n// stability, but it's expensive.\nconst viewportPadding = 100;\n\n/**\n * A collision index used to prevent symbols from overlapping. It keep tracks of\n * where previous symbols have been placed and is used to check if a new\n * symbol overlaps with any previously added symbols.\n *\n * There are two steps to insertion: first placeCollisionBox/Circles checks if\n * there's room for a symbol, then insertCollisionBox/Circles actually puts the\n * symbol in the index. The two step process allows paired symbols to be inserted\n * together even if they overlap.\n *\n * @private\n */\nclass CollisionIndex {\n grid: Grid;\n ignoredGrid: Grid;\n transform: Transform;\n pitchfactor: number;\n screenRightBoundary: number;\n screenBottomBoundary: number;\n gridRightBoundary: number;\n gridBottomBoundary: number;\n\n constructor(\n transform: Transform,\n grid: Grid = new Grid(transform.width + 2 * viewportPadding, transform.height + 2 * viewportPadding, 25),\n ignoredGrid: Grid = new Grid(transform.width + 2 * viewportPadding, transform.height + 2 * viewportPadding, 25)\n ) {\n this.transform = transform;\n\n this.grid = grid;\n this.ignoredGrid = ignoredGrid;\n this.pitchfactor = Math.cos(transform._pitch) * transform.cameraToCenterDistance;\n\n this.screenRightBoundary = transform.width + viewportPadding;\n this.screenBottomBoundary = transform.height + viewportPadding;\n this.gridRightBoundary = transform.width + 2 * viewportPadding;\n this.gridBottomBoundary = transform.height + 2 * viewportPadding;\n }\n\n placeCollisionBox(collisionBox: SingleCollisionBox, allowOverlap: boolean, textPixelRatio: number, posMatrix: mat4, collisionGroupPredicate?: any): { box: Array, offscreen: boolean } {\n const projectedPoint = this.projectAndGetPerspectiveRatio(posMatrix, collisionBox.anchorPointX, collisionBox.anchorPointY);\n const tileToViewport = textPixelRatio * projectedPoint.perspectiveRatio;\n const tlX = collisionBox.x1 * tileToViewport + projectedPoint.point.x;\n const tlY = collisionBox.y1 * tileToViewport + projectedPoint.point.y;\n const brX = collisionBox.x2 * tileToViewport + projectedPoint.point.x;\n const brY = collisionBox.y2 * tileToViewport + projectedPoint.point.y;\n\n if (!this.isInsideGrid(tlX, tlY, brX, brY) ||\n (!allowOverlap && this.grid.hitTest(tlX, tlY, brX, brY, collisionGroupPredicate))) {\n return {\n box: [],\n offscreen: false\n };\n }\n\n return {\n box: [tlX, tlY, brX, brY],\n offscreen: this.isOffscreen(tlX, tlY, brX, brY)\n };\n }\n\n placeCollisionCircles(allowOverlap: boolean,\n symbol: any,\n lineVertexArray: SymbolLineVertexArray,\n glyphOffsetArray: GlyphOffsetArray,\n fontSize: number,\n posMatrix: mat4,\n labelPlaneMatrix: mat4,\n labelToScreenMatrix?: mat4,\n showCollisionCircles: boolean,\n pitchWithMap: boolean,\n collisionGroupPredicate?: any,\n circlePixelDiameter: number,\n textPixelPadding: number): { circles: Array, offscreen: boolean, collisionDetected: boolean } {\n const placedCollisionCircles = [];\n\n const tileUnitAnchorPoint = new Point(symbol.anchorX, symbol.anchorY);\n const screenAnchorPoint = projection.project(tileUnitAnchorPoint, posMatrix);\n const perspectiveRatio = projection.getPerspectiveRatio(this.transform.cameraToCenterDistance, screenAnchorPoint.signedDistanceFromCamera);\n const labelPlaneFontSize = pitchWithMap ? fontSize / perspectiveRatio : fontSize * perspectiveRatio;\n const labelPlaneFontScale = labelPlaneFontSize / ONE_EM;\n\n const labelPlaneAnchorPoint = projection.project(tileUnitAnchorPoint, labelPlaneMatrix).point;\n\n const projectionCache = {};\n const lineOffsetX = symbol.lineOffsetX * labelPlaneFontScale;\n const lineOffsetY = symbol.lineOffsetY * labelPlaneFontScale;\n\n const firstAndLastGlyph = projection.placeFirstAndLastGlyph(\n labelPlaneFontScale,\n glyphOffsetArray,\n lineOffsetX,\n lineOffsetY,\n /*flip*/ false,\n labelPlaneAnchorPoint,\n tileUnitAnchorPoint,\n symbol,\n lineVertexArray,\n labelPlaneMatrix,\n projectionCache);\n\n let collisionDetected = false;\n let inGrid = false;\n let entirelyOffscreen = true;\n\n if (firstAndLastGlyph) {\n const radius = circlePixelDiameter * 0.5 * perspectiveRatio + textPixelPadding;\n const screenPlaneMin = new Point(-viewportPadding, -viewportPadding);\n const screenPlaneMax = new Point(this.screenRightBoundary, this.screenBottomBoundary);\n const interpolator = new PathInterpolator();\n\n // Construct a projected path from projected line vertices. Anchor points are ignored and removed\n const first = firstAndLastGlyph.first;\n const last = firstAndLastGlyph.last;\n\n let projectedPath = [];\n for (let i = first.path.length - 1; i >= 1; i--) {\n projectedPath.push(first.path[i]);\n }\n for (let i = 1; i < last.path.length; i++) {\n projectedPath.push(last.path[i]);\n }\n assert(projectedPath.length >= 2);\n\n // Tolerate a slightly longer distance than one diameter between two adjacent circles\n const circleDist = radius * 2.5;\n\n // The path might need to be converted into screen space if a pitched map is used as the label space\n if (labelToScreenMatrix) {\n const screenSpacePath = projectedPath.map(p => projection.project(p, labelToScreenMatrix));\n\n // Do not try to place collision circles if even of the points is behind the camera.\n // This is a plausible scenario with big camera pitch angles\n if (screenSpacePath.some(point => point.signedDistanceFromCamera <= 0)) {\n projectedPath = [];\n } else {\n projectedPath = screenSpacePath.map(p => p.point);\n }\n }\n\n let segments = [];\n\n if (projectedPath.length > 0) {\n // Quickly check if the path is fully inside or outside of the padded collision region.\n // For overlapping paths we'll only create collision circles for the visible segments\n const minPoint = projectedPath[0].clone();\n const maxPoint = projectedPath[0].clone();\n\n for (let i = 1; i < projectedPath.length; i++) {\n minPoint.x = Math.min(minPoint.x, projectedPath[i].x);\n minPoint.y = Math.min(minPoint.y, projectedPath[i].y);\n maxPoint.x = Math.max(maxPoint.x, projectedPath[i].x);\n maxPoint.y = Math.max(maxPoint.y, projectedPath[i].y);\n }\n\n if (minPoint.x >= screenPlaneMin.x && maxPoint.x <= screenPlaneMax.x &&\n minPoint.y >= screenPlaneMin.y && maxPoint.y <= screenPlaneMax.y) {\n // Quad fully visible\n segments = [projectedPath];\n } else if (maxPoint.x < screenPlaneMin.x || minPoint.x > screenPlaneMax.x ||\n maxPoint.y < screenPlaneMin.y || minPoint.y > screenPlaneMax.y) {\n // Not visible\n segments = [];\n } else {\n segments = clipLine([projectedPath], screenPlaneMin.x, screenPlaneMin.y, screenPlaneMax.x, screenPlaneMax.y);\n }\n }\n\n for (const seg of segments) {\n // interpolate positions for collision circles. Add a small padding to both ends of the segment\n assert(seg.length > 0);\n interpolator.reset(seg, radius * 0.25);\n\n let numCircles = 0;\n\n if (interpolator.length <= 0.5 * radius) {\n numCircles = 1;\n } else {\n numCircles = Math.ceil(interpolator.paddedLength / circleDist) + 1;\n }\n\n for (let i = 0; i < numCircles; i++) {\n const t = i / Math.max(numCircles - 1, 1);\n const circlePosition = interpolator.lerp(t);\n\n // add viewport padding to the position and perform initial collision check\n const centerX = circlePosition.x + viewportPadding;\n const centerY = circlePosition.y + viewportPadding;\n\n placedCollisionCircles.push(centerX, centerY, radius, 0);\n\n const x1 = centerX - radius;\n const y1 = centerY - radius;\n const x2 = centerX + radius;\n const y2 = centerY + radius;\n\n entirelyOffscreen = entirelyOffscreen && this.isOffscreen(x1, y1, x2, y2);\n inGrid = inGrid || this.isInsideGrid(x1, y1, x2, y2);\n\n if (!allowOverlap) {\n if (this.grid.hitTestCircle(centerX, centerY, radius, collisionGroupPredicate)) {\n // Don't early exit if we're showing the debug circles because we still want to calculate\n // which circles are in use\n collisionDetected = true;\n if (!showCollisionCircles) {\n return {\n circles: [],\n offscreen: false,\n collisionDetected\n };\n }\n }\n }\n }\n }\n }\n\n return {\n circles: ((!showCollisionCircles && collisionDetected) || !inGrid) ? [] : placedCollisionCircles,\n offscreen: entirelyOffscreen,\n collisionDetected\n };\n }\n\n /**\n * Because the geometries in the CollisionIndex are an approximation of the shape of\n * symbols on the map, we use the CollisionIndex to look up the symbol part of\n * `queryRenderedFeatures`.\n *\n * @private\n */\n queryRenderedSymbols(viewportQueryGeometry: Array) {\n if (viewportQueryGeometry.length === 0 || (this.grid.keysLength() === 0 && this.ignoredGrid.keysLength() === 0)) {\n return {};\n }\n\n const query = [];\n let minX = Infinity;\n let minY = Infinity;\n let maxX = -Infinity;\n let maxY = -Infinity;\n for (const point of viewportQueryGeometry) {\n const gridPoint = new Point(point.x + viewportPadding, point.y + viewportPadding);\n minX = Math.min(minX, gridPoint.x);\n minY = Math.min(minY, gridPoint.y);\n maxX = Math.max(maxX, gridPoint.x);\n maxY = Math.max(maxY, gridPoint.y);\n query.push(gridPoint);\n }\n\n const features = this.grid.query(minX, minY, maxX, maxY)\n .concat(this.ignoredGrid.query(minX, minY, maxX, maxY));\n\n const seenFeatures = {};\n const result = {};\n\n for (const feature of features) {\n const featureKey = feature.key;\n // Skip already seen features.\n if (seenFeatures[featureKey.bucketInstanceId] === undefined) {\n seenFeatures[featureKey.bucketInstanceId] = {};\n }\n if (seenFeatures[featureKey.bucketInstanceId][featureKey.featureIndex]) {\n continue;\n }\n\n // Check if query intersects with the feature box\n // \"Collision Circles\" for line labels are treated as boxes here\n // Since there's no actual collision taking place, the circle vs. square\n // distinction doesn't matter as much, and box geometry is easier\n // to work with.\n const bbox = [\n new Point(feature.x1, feature.y1),\n new Point(feature.x2, feature.y1),\n new Point(feature.x2, feature.y2),\n new Point(feature.x1, feature.y2)\n ];\n if (!intersectionTests.polygonIntersectsPolygon(query, bbox)) {\n continue;\n }\n\n seenFeatures[featureKey.bucketInstanceId][featureKey.featureIndex] = true;\n if (result[featureKey.bucketInstanceId] === undefined) {\n result[featureKey.bucketInstanceId] = [];\n }\n result[featureKey.bucketInstanceId].push(featureKey.featureIndex);\n }\n\n return result;\n }\n\n insertCollisionBox(collisionBox: Array, ignorePlacement: boolean, bucketInstanceId: number, featureIndex: number, collisionGroupID: number) {\n const grid = ignorePlacement ? this.ignoredGrid : this.grid;\n\n const key = {bucketInstanceId, featureIndex, collisionGroupID};\n grid.insert(key, collisionBox[0], collisionBox[1], collisionBox[2], collisionBox[3]);\n }\n\n insertCollisionCircles(collisionCircles: Array, ignorePlacement: boolean, bucketInstanceId: number, featureIndex: number, collisionGroupID: number) {\n const grid = ignorePlacement ? this.ignoredGrid : this.grid;\n\n const key = {bucketInstanceId, featureIndex, collisionGroupID};\n for (let k = 0; k < collisionCircles.length; k += 4) {\n grid.insertCircle(key, collisionCircles[k], collisionCircles[k + 1], collisionCircles[k + 2]);\n }\n }\n\n projectAndGetPerspectiveRatio(posMatrix: mat4, x: number, y: number) {\n const p = [x, y, 0, 1];\n projection.xyTransformMat4(p, p, posMatrix);\n const a = new Point(\n (((p[0] / p[3] + 1) / 2) * this.transform.width) + viewportPadding,\n (((-p[1] / p[3] + 1) / 2) * this.transform.height) + viewportPadding\n );\n return {\n point: a,\n // See perspective ratio comment in symbol_sdf.vertex\n // We're doing collision detection in viewport space so we need\n // to scale down boxes in the distance\n perspectiveRatio: 0.5 + 0.5 * (this.transform.cameraToCenterDistance / p[3])\n };\n }\n\n isOffscreen(x1: number, y1: number, x2: number, y2: number) {\n return x2 < viewportPadding || x1 >= this.screenRightBoundary || y2 < viewportPadding || y1 > this.screenBottomBoundary;\n }\n\n isInsideGrid(x1: number, y1: number, x2: number, y2: number) {\n return x2 >= 0 && x1 < this.gridRightBoundary && y2 >= 0 && y1 < this.gridBottomBoundary;\n }\n\n /*\n * Returns a matrix for transforming collision shapes to viewport coordinate space.\n * Use this function to render e.g. collision circles on the screen.\n * example transformation: clipPos = glCoordMatrix * viewportMatrix * circle_pos\n */\n getViewportMatrix(): mat4 {\n const m = mat4.identity([]);\n mat4.translate(m, m, [-viewportPadding, -viewportPadding, 0.0]);\n return m;\n }\n}\n\nexport default CollisionIndex;\n", "// @flow\n\nimport EXTENT from '../data/extent';\n\nimport type {OverscaledTileID} from './tile_id';\n\n/**\n * Converts a pixel value at a the given zoom level to tile units.\n *\n * The shaders mostly calculate everything in tile units so style\n * properties need to be converted from pixels to tile units using this.\n *\n * For example, a translation by 30 pixels at zoom 6.5 will be a\n * translation by pixelsToTileUnits(30, 6.5) tile units.\n *\n * @returns value in tile units\n * @private\n */\nexport default function(tile: {tileID: OverscaledTileID, tileSize: number}, pixelValue: number, z: number): number {\n return pixelValue * (EXTENT / (tile.tileSize * Math.pow(2, z - tile.tileID.overscaledZ)));\n}\n", "// @flow\n\nimport CollisionIndex from './collision_index';\nimport EXTENT from '../data/extent';\nimport * as symbolSize from './symbol_size';\nimport * as projection from './projection';\nimport {getAnchorJustification, evaluateVariableOffset} from './symbol_layout';\nimport {getAnchorAlignment, WritingMode} from './shaping';\nimport {mat4} from 'gl-matrix';\nimport assert from 'assert';\nimport pixelsToTileUnits from '../source/pixels_to_tile_units';\nimport Point from '@mapbox/point-geometry';\nimport type Transform from '../geo/transform';\nimport type StyleLayer from '../style/style_layer';\n\nimport type Tile from '../source/tile';\nimport type SymbolBucket, {CollisionArrays, SingleCollisionBox} from '../data/bucket/symbol_bucket';\nimport type {CollisionBoxArray, CollisionVertexArray, SymbolInstance} from '../data/array_types';\nimport type FeatureIndex from '../data/feature_index';\nimport type {OverscaledTileID} from '../source/tile_id';\nimport type {TextAnchor} from './symbol_layout';\n\nclass OpacityState {\n opacity: number;\n placed: boolean;\n constructor(prevState: ?OpacityState, increment: number, placed: boolean, skipFade: ?boolean) {\n if (prevState) {\n this.opacity = Math.max(0, Math.min(1, prevState.opacity + (prevState.placed ? increment : -increment)));\n } else {\n this.opacity = (skipFade && placed) ? 1 : 0;\n }\n this.placed = placed;\n }\n isHidden() {\n return this.opacity === 0 && !this.placed;\n }\n}\n\nclass JointOpacityState {\n text: OpacityState;\n icon: OpacityState;\n constructor(prevState: ?JointOpacityState, increment: number, placedText: boolean, placedIcon: boolean, skipFade: ?boolean) {\n this.text = new OpacityState(prevState ? prevState.text : null, increment, placedText, skipFade);\n this.icon = new OpacityState(prevState ? prevState.icon : null, increment, placedIcon, skipFade);\n }\n isHidden() {\n return this.text.isHidden() && this.icon.isHidden();\n }\n}\n\nclass JointPlacement {\n text: boolean;\n icon: boolean;\n // skipFade = outside viewport, but within CollisionIndex::viewportPadding px of the edge\n // Because these symbols aren't onscreen yet, we can skip the \"fade in\" animation,\n // and if a subsequent viewport change brings them into view, they'll be fully\n // visible right away.\n skipFade: boolean;\n constructor(text: boolean, icon: boolean, skipFade: boolean) {\n this.text = text;\n this.icon = icon;\n this.skipFade = skipFade;\n }\n}\n\nclass CollisionCircleArray {\n // Stores collision circles and placement matrices of a bucket for debug rendering.\n invProjMatrix: mat4;\n viewportMatrix: mat4;\n circles: Array;\n\n constructor() {\n this.invProjMatrix = mat4.create();\n this.viewportMatrix = mat4.create();\n this.circles = [];\n }\n}\n\nexport class RetainedQueryData {\n bucketInstanceId: number;\n featureIndex: FeatureIndex;\n sourceLayerIndex: number;\n bucketIndex: number;\n tileID: OverscaledTileID;\n featureSortOrder: ?Array\n constructor(bucketInstanceId: number,\n featureIndex: FeatureIndex,\n sourceLayerIndex: number,\n bucketIndex: number,\n tileID: OverscaledTileID) {\n this.bucketInstanceId = bucketInstanceId;\n this.featureIndex = featureIndex;\n this.sourceLayerIndex = sourceLayerIndex;\n this.bucketIndex = bucketIndex;\n this.tileID = tileID;\n }\n}\n\ntype CollisionGroup = { ID: number, predicate?: any };\n\nclass CollisionGroups {\n collisionGroups: {[groupName: string]: CollisionGroup};\n maxGroupID: number;\n crossSourceCollisions: boolean;\n\n constructor(crossSourceCollisions: boolean) {\n this.crossSourceCollisions = crossSourceCollisions;\n this.maxGroupID = 0;\n this.collisionGroups = {};\n }\n\n get(sourceID: string) {\n // The predicate/groupID mechanism allows for arbitrary grouping,\n // but the current interface defines one source == one group when\n // crossSourceCollisions == true.\n if (!this.crossSourceCollisions) {\n if (!this.collisionGroups[sourceID]) {\n const nextGroupID = ++this.maxGroupID;\n this.collisionGroups[sourceID] = {\n ID: nextGroupID,\n predicate: (key) => {\n return key.collisionGroupID === nextGroupID;\n }\n };\n }\n return this.collisionGroups[sourceID];\n } else {\n return {ID: 0, predicate: null};\n }\n }\n}\n\nfunction calculateVariableLayoutShift(anchor: TextAnchor, width: number, height: number, textOffset: [number, number], textBoxScale: number): Point {\n const {horizontalAlign, verticalAlign} = getAnchorAlignment(anchor);\n const shiftX = -(horizontalAlign - 0.5) * width;\n const shiftY = -(verticalAlign - 0.5) * height;\n const offset = evaluateVariableOffset(anchor, textOffset);\n return new Point(\n shiftX + offset[0] * textBoxScale,\n shiftY + offset[1] * textBoxScale\n );\n}\n\nfunction shiftVariableCollisionBox(collisionBox: SingleCollisionBox,\n shiftX: number, shiftY: number,\n rotateWithMap: boolean, pitchWithMap: boolean,\n angle: number) {\n const {x1, x2, y1, y2, anchorPointX, anchorPointY} = collisionBox;\n const rotatedOffset = new Point(shiftX, shiftY);\n if (rotateWithMap) {\n rotatedOffset._rotate(pitchWithMap ? angle : -angle);\n }\n return {\n x1: x1 + rotatedOffset.x,\n y1: y1 + rotatedOffset.y,\n x2: x2 + rotatedOffset.x,\n y2: y2 + rotatedOffset.y,\n // symbol anchor point stays the same regardless of text-anchor\n anchorPointX,\n anchorPointY\n };\n}\n\nexport type VariableOffset = {\n textOffset: [number, number],\n width: number,\n height: number,\n anchor: TextAnchor,\n textBoxScale: number,\n prevAnchor?: TextAnchor\n};\n\ntype TileLayerParameters = {\n bucket: SymbolBucket,\n layout: any,\n posMatrix: mat4,\n textLabelPlaneMatrix: mat4,\n labelToScreenMatrix: mat4,\n scale: number,\n textPixelRatio: number,\n holdingForFade: boolean,\n collisionBoxArray: ?CollisionBoxArray,\n partiallyEvaluatedTextSize: any,\n collisionGroup: any\n};\n\nexport type BucketPart = {\n sortKey?: number | void,\n symbolInstanceStart: number,\n symbolInstanceEnd: number,\n parameters: TileLayerParameters\n};\n\nexport type CrossTileID = string | number;\n\nexport class Placement {\n transform: Transform;\n collisionIndex: CollisionIndex;\n placements: { [_: CrossTileID]: JointPlacement };\n opacities: { [_: CrossTileID]: JointOpacityState };\n variableOffsets: {[_: CrossTileID]: VariableOffset };\n placedOrientations: {[_: CrossTileID]: number };\n commitTime: number;\n prevZoomAdjustment: number;\n lastPlacementChangeTime: number;\n stale: boolean;\n fadeDuration: number;\n retainedQueryData: {[_: number]: RetainedQueryData};\n collisionGroups: CollisionGroups;\n prevPlacement: ?Placement;\n zoomAtLastRecencyCheck: number;\n collisionCircleArrays: {[any]: CollisionCircleArray};\n\n constructor(transform: Transform, fadeDuration: number, crossSourceCollisions: boolean, prevPlacement?: Placement) {\n this.transform = transform.clone();\n this.collisionIndex = new CollisionIndex(this.transform);\n this.placements = {};\n this.opacities = {};\n this.variableOffsets = {};\n this.stale = false;\n this.commitTime = 0;\n this.fadeDuration = fadeDuration;\n this.retainedQueryData = {};\n this.collisionGroups = new CollisionGroups(crossSourceCollisions);\n this.collisionCircleArrays = {};\n\n this.prevPlacement = prevPlacement;\n if (prevPlacement) {\n prevPlacement.prevPlacement = undefined; // Only hold on to one placement back\n }\n\n this.placedOrientations = {};\n }\n\n getBucketParts(results: Array, styleLayer: StyleLayer, tile: Tile, sortAcrossTiles: boolean) {\n const symbolBucket = ((tile.getBucket(styleLayer): any): SymbolBucket);\n const bucketFeatureIndex = tile.latestFeatureIndex;\n if (!symbolBucket || !bucketFeatureIndex || styleLayer.id !== symbolBucket.layerIds[0])\n return;\n\n const collisionBoxArray = tile.collisionBoxArray;\n\n const layout = symbolBucket.layers[0].layout;\n\n const scale = Math.pow(2, this.transform.zoom - tile.tileID.overscaledZ);\n const textPixelRatio = tile.tileSize / EXTENT;\n\n const posMatrix = this.transform.calculatePosMatrix(tile.tileID.toUnwrapped());\n\n const pitchWithMap = layout.get('text-pitch-alignment') === 'map';\n const rotateWithMap = layout.get('text-rotation-alignment') === 'map';\n const pixelsToTiles = pixelsToTileUnits(tile, 1, this.transform.zoom);\n\n const textLabelPlaneMatrix = projection.getLabelPlaneMatrix(posMatrix,\n pitchWithMap,\n rotateWithMap,\n this.transform,\n pixelsToTiles);\n\n let labelToScreenMatrix = null;\n\n if (pitchWithMap) {\n const glMatrix = projection.getGlCoordMatrix(\n posMatrix,\n pitchWithMap,\n rotateWithMap,\n this.transform,\n pixelsToTiles);\n\n labelToScreenMatrix = mat4.multiply([], this.transform.labelPlaneMatrix, glMatrix);\n }\n\n // As long as this placement lives, we have to hold onto this bucket's\n // matching FeatureIndex/data for querying purposes\n this.retainedQueryData[symbolBucket.bucketInstanceId] = new RetainedQueryData(\n symbolBucket.bucketInstanceId,\n bucketFeatureIndex,\n symbolBucket.sourceLayerIndex,\n symbolBucket.index,\n tile.tileID\n );\n\n const parameters = {\n bucket: symbolBucket,\n layout,\n posMatrix,\n textLabelPlaneMatrix,\n labelToScreenMatrix,\n scale,\n textPixelRatio,\n holdingForFade: tile.holdingForFade(),\n collisionBoxArray,\n partiallyEvaluatedTextSize: symbolSize.evaluateSizeForZoom(symbolBucket.textSizeData, this.transform.zoom),\n collisionGroup: this.collisionGroups.get(symbolBucket.sourceID)\n };\n\n if (sortAcrossTiles) {\n for (const range of symbolBucket.sortKeyRanges) {\n const {sortKey, symbolInstanceStart, symbolInstanceEnd} = range;\n results.push({sortKey, symbolInstanceStart, symbolInstanceEnd, parameters});\n }\n } else {\n results.push({\n symbolInstanceStart: 0,\n symbolInstanceEnd: symbolBucket.symbolInstances.length,\n parameters\n });\n }\n }\n\n attemptAnchorPlacement(anchor: TextAnchor, textBox: SingleCollisionBox, width: number, height: number,\n textBoxScale: number, rotateWithMap: boolean,\n pitchWithMap: boolean, textPixelRatio: number, posMatrix: mat4, collisionGroup: CollisionGroup,\n textAllowOverlap: boolean, symbolInstance: SymbolInstance, bucket: SymbolBucket, orientation: number, iconBox: ?SingleCollisionBox): ?{ shift: Point, placedGlyphBoxes: { box: Array, offscreen: boolean } } {\n\n const textOffset = [symbolInstance.textOffset0, symbolInstance.textOffset1];\n const shift = calculateVariableLayoutShift(anchor, width, height, textOffset, textBoxScale);\n\n const placedGlyphBoxes = this.collisionIndex.placeCollisionBox(\n shiftVariableCollisionBox(\n textBox, shift.x, shift.y,\n rotateWithMap, pitchWithMap, this.transform.angle),\n textAllowOverlap, textPixelRatio, posMatrix, collisionGroup.predicate);\n\n if (iconBox) {\n const placedIconBoxes = this.collisionIndex.placeCollisionBox(\n shiftVariableCollisionBox(\n iconBox, shift.x, shift.y,\n rotateWithMap, pitchWithMap, this.transform.angle),\n textAllowOverlap, textPixelRatio, posMatrix, collisionGroup.predicate);\n if (placedIconBoxes.box.length === 0) return;\n }\n\n if (placedGlyphBoxes.box.length > 0) {\n let prevAnchor;\n // If this label was placed in the previous placement, record the anchor position\n // to allow us to animate the transition\n if (this.prevPlacement &&\n this.prevPlacement.variableOffsets[symbolInstance.crossTileID] &&\n this.prevPlacement.placements[symbolInstance.crossTileID] &&\n this.prevPlacement.placements[symbolInstance.crossTileID].text) {\n prevAnchor = this.prevPlacement.variableOffsets[symbolInstance.crossTileID].anchor;\n }\n assert(symbolInstance.crossTileID !== 0);\n this.variableOffsets[symbolInstance.crossTileID] = {\n textOffset,\n width,\n height,\n anchor,\n textBoxScale,\n prevAnchor\n };\n this.markUsedJustification(bucket, anchor, symbolInstance, orientation);\n\n if (bucket.allowVerticalPlacement) {\n this.markUsedOrientation(bucket, orientation, symbolInstance);\n this.placedOrientations[symbolInstance.crossTileID] = orientation;\n }\n\n return {shift, placedGlyphBoxes};\n }\n }\n\n placeLayerBucketPart(bucketPart: Object, seenCrossTileIDs: { [string | number]: boolean }, showCollisionBoxes: boolean) {\n\n const {\n bucket,\n layout,\n posMatrix,\n textLabelPlaneMatrix,\n labelToScreenMatrix,\n textPixelRatio,\n holdingForFade,\n collisionBoxArray,\n partiallyEvaluatedTextSize,\n collisionGroup\n } = bucketPart.parameters;\n\n const textOptional = layout.get('text-optional');\n const iconOptional = layout.get('icon-optional');\n const textAllowOverlap = layout.get('text-allow-overlap');\n const iconAllowOverlap = layout.get('icon-allow-overlap');\n const rotateWithMap = layout.get('text-rotation-alignment') === 'map';\n const pitchWithMap = layout.get('text-pitch-alignment') === 'map';\n const hasIconTextFit = layout.get('icon-text-fit') !== 'none';\n const zOrderByViewportY = layout.get('symbol-z-order') === 'viewport-y';\n\n // This logic is similar to the \"defaultOpacityState\" logic below in updateBucketOpacities\n // If we know a symbol is always supposed to show, force it to be marked visible even if\n // it wasn't placed into the collision index (because some or all of it was outside the range\n // of the collision grid).\n // There is a subtle edge case here we're accepting:\n // Symbol A has text-allow-overlap: true, icon-allow-overlap: true, icon-optional: false\n // A's icon is outside the grid, so doesn't get placed\n // A's text would be inside grid, but doesn't get placed because of icon-optional: false\n // We still show A because of the allow-overlap settings.\n // Symbol B has allow-overlap: false, and gets placed where A's text would be\n // On panning in, there is a short period when Symbol B and Symbol A will overlap\n // This is the reverse of our normal policy of \"fade in on pan\", but should look like any other\n // collision and hopefully not be too noticeable.\n // See https://github.com/mapbox/mapbox-gl-js/issues/7172\n const alwaysShowText = textAllowOverlap && (iconAllowOverlap || !bucket.hasIconData() || iconOptional);\n const alwaysShowIcon = iconAllowOverlap && (textAllowOverlap || !bucket.hasTextData() || textOptional);\n\n if (!bucket.collisionArrays && collisionBoxArray) {\n bucket.deserializeCollisionBoxes(collisionBoxArray);\n }\n\n const placeSymbol = (symbolInstance: SymbolInstance, collisionArrays: CollisionArrays) => {\n if (seenCrossTileIDs[symbolInstance.crossTileID]) return;\n if (holdingForFade) {\n // Mark all symbols from this tile as \"not placed\", but don't add to seenCrossTileIDs, because we don't\n // know yet if we have a duplicate in a parent tile that _should_ be placed.\n this.placements[symbolInstance.crossTileID] = new JointPlacement(false, false, false);\n return;\n }\n\n let placeText = false;\n let placeIcon = false;\n let offscreen = true;\n let shift = null;\n\n let placed = {box: null, offscreen: null};\n let placedVerticalText = {box: null, offscreen: null};\n\n let placedGlyphBoxes = null;\n let placedGlyphCircles = null;\n let placedIconBoxes = null;\n let textFeatureIndex = 0;\n let verticalTextFeatureIndex = 0;\n let iconFeatureIndex = 0;\n\n if (collisionArrays.textFeatureIndex) {\n textFeatureIndex = collisionArrays.textFeatureIndex;\n } else if (symbolInstance.useRuntimeCollisionCircles) {\n textFeatureIndex = symbolInstance.featureIndex;\n }\n if (collisionArrays.verticalTextFeatureIndex) {\n verticalTextFeatureIndex = collisionArrays.verticalTextFeatureIndex;\n }\n\n const textBox = collisionArrays.textBox;\n if (textBox) {\n\n const updatePreviousOrientationIfNotPlaced = (isPlaced) => {\n let previousOrientation = WritingMode.horizontal;\n if (bucket.allowVerticalPlacement && !isPlaced && this.prevPlacement) {\n const prevPlacedOrientation = this.prevPlacement.placedOrientations[symbolInstance.crossTileID];\n if (prevPlacedOrientation) {\n this.placedOrientations[symbolInstance.crossTileID] = prevPlacedOrientation;\n previousOrientation = prevPlacedOrientation;\n this.markUsedOrientation(bucket, previousOrientation, symbolInstance);\n }\n }\n return previousOrientation;\n };\n\n const placeTextForPlacementModes = (placeHorizontalFn, placeVerticalFn) => {\n if (bucket.allowVerticalPlacement && symbolInstance.numVerticalGlyphVertices > 0 && collisionArrays.verticalTextBox) {\n for (const placementMode of bucket.writingModes) {\n if (placementMode === WritingMode.vertical) {\n placed = placeVerticalFn();\n placedVerticalText = placed;\n } else {\n placed = placeHorizontalFn();\n }\n if (placed && placed.box && placed.box.length) break;\n }\n } else {\n placed = placeHorizontalFn();\n }\n };\n\n if (!layout.get('text-variable-anchor')) {\n const placeBox = (collisionTextBox, orientation) => {\n const placedFeature = this.collisionIndex.placeCollisionBox(collisionTextBox, textAllowOverlap,\n textPixelRatio, posMatrix, collisionGroup.predicate);\n if (placedFeature && placedFeature.box && placedFeature.box.length) {\n this.markUsedOrientation(bucket, orientation, symbolInstance);\n this.placedOrientations[symbolInstance.crossTileID] = orientation;\n }\n return placedFeature;\n };\n\n const placeHorizontal = () => {\n return placeBox(textBox, WritingMode.horizontal);\n };\n\n const placeVertical = () => {\n const verticalTextBox = collisionArrays.verticalTextBox;\n if (bucket.allowVerticalPlacement && symbolInstance.numVerticalGlyphVertices > 0 && verticalTextBox) {\n return placeBox(verticalTextBox, WritingMode.vertical);\n }\n return {box: null, offscreen: null};\n };\n\n placeTextForPlacementModes(placeHorizontal, placeVertical);\n updatePreviousOrientationIfNotPlaced(placed && placed.box && placed.box.length);\n\n } else {\n let anchors = layout.get('text-variable-anchor');\n\n // If this symbol was in the last placement, shift the previously used\n // anchor to the front of the anchor list, only if the previous anchor\n // is still in the anchor list\n if (this.prevPlacement && this.prevPlacement.variableOffsets[symbolInstance.crossTileID]) {\n const prevOffsets = this.prevPlacement.variableOffsets[symbolInstance.crossTileID];\n if (anchors.indexOf(prevOffsets.anchor) > 0) {\n anchors = anchors.filter(anchor => anchor !== prevOffsets.anchor);\n anchors.unshift(prevOffsets.anchor);\n }\n }\n\n const placeBoxForVariableAnchors = (collisionTextBox, collisionIconBox, orientation) => {\n const width = collisionTextBox.x2 - collisionTextBox.x1;\n const height = collisionTextBox.y2 - collisionTextBox.y1;\n const textBoxScale = symbolInstance.textBoxScale;\n\n const variableIconBox = hasIconTextFit && !iconAllowOverlap ? collisionIconBox : null;\n\n let placedBox: ?{ box: Array, offscreen: boolean } = {box: [], offscreen: false};\n const placementAttempts = textAllowOverlap ? anchors.length * 2 : anchors.length;\n for (let i = 0; i < placementAttempts; ++i) {\n const anchor = anchors[i % anchors.length];\n const allowOverlap = (i >= anchors.length);\n const result = this.attemptAnchorPlacement(\n anchor, collisionTextBox, width, height,\n textBoxScale, rotateWithMap, pitchWithMap, textPixelRatio, posMatrix,\n collisionGroup, allowOverlap, symbolInstance, bucket, orientation, variableIconBox);\n\n if (result) {\n placedBox = result.placedGlyphBoxes;\n if (placedBox && placedBox.box && placedBox.box.length) {\n placeText = true;\n shift = result.shift;\n break;\n }\n }\n }\n\n return placedBox;\n };\n\n const placeHorizontal = () => {\n return placeBoxForVariableAnchors(textBox, collisionArrays.iconBox, WritingMode.horizontal);\n };\n\n const placeVertical = () => {\n const verticalTextBox = collisionArrays.verticalTextBox;\n const wasPlaced = placed && placed.box && placed.box.length;\n if (bucket.allowVerticalPlacement && !wasPlaced && symbolInstance.numVerticalGlyphVertices > 0 && verticalTextBox) {\n return placeBoxForVariableAnchors(verticalTextBox, collisionArrays.verticalIconBox, WritingMode.vertical);\n }\n return {box: null, offscreen: null};\n };\n\n placeTextForPlacementModes(placeHorizontal, placeVertical);\n\n if (placed) {\n placeText = placed.box;\n offscreen = placed.offscreen;\n }\n\n const prevOrientation = updatePreviousOrientationIfNotPlaced(placed && placed.box);\n\n // If we didn't get placed, we still need to copy our position from the last placement for\n // fade animations\n if (!placeText && this.prevPlacement) {\n const prevOffset = this.prevPlacement.variableOffsets[symbolInstance.crossTileID];\n if (prevOffset) {\n this.variableOffsets[symbolInstance.crossTileID] = prevOffset;\n this.markUsedJustification(bucket, prevOffset.anchor, symbolInstance, prevOrientation);\n }\n }\n\n }\n }\n\n placedGlyphBoxes = placed;\n placeText = placedGlyphBoxes && placedGlyphBoxes.box && placedGlyphBoxes.box.length > 0;\n\n offscreen = placedGlyphBoxes && placedGlyphBoxes.offscreen;\n\n if (symbolInstance.useRuntimeCollisionCircles) {\n const placedSymbol = bucket.text.placedSymbolArray.get(symbolInstance.centerJustifiedTextSymbolIndex);\n const fontSize = symbolSize.evaluateSizeForFeature(bucket.textSizeData, partiallyEvaluatedTextSize, placedSymbol);\n\n const textPixelPadding = layout.get('text-padding');\n const circlePixelDiameter = symbolInstance.collisionCircleDiameter;\n\n placedGlyphCircles = this.collisionIndex.placeCollisionCircles(textAllowOverlap,\n placedSymbol,\n bucket.lineVertexArray,\n bucket.glyphOffsetArray,\n fontSize,\n posMatrix,\n textLabelPlaneMatrix,\n labelToScreenMatrix,\n showCollisionBoxes,\n pitchWithMap,\n collisionGroup.predicate,\n circlePixelDiameter,\n textPixelPadding);\n\n assert(!placedGlyphCircles.circles.length || (!placedGlyphCircles.collisionDetected || showCollisionBoxes));\n // If text-allow-overlap is set, force \"placedCircles\" to true\n // In theory there should always be at least one circle placed\n // in this case, but for now quirks in text-anchor\n // and text-offset may prevent that from being true.\n placeText = textAllowOverlap || (placedGlyphCircles.circles.length > 0 && !placedGlyphCircles.collisionDetected);\n offscreen = offscreen && placedGlyphCircles.offscreen;\n }\n\n if (collisionArrays.iconFeatureIndex) {\n iconFeatureIndex = collisionArrays.iconFeatureIndex;\n }\n\n if (collisionArrays.iconBox) {\n\n const placeIconFeature = iconBox => {\n const shiftedIconBox = hasIconTextFit && shift ?\n shiftVariableCollisionBox(\n iconBox, shift.x, shift.y,\n rotateWithMap, pitchWithMap, this.transform.angle) :\n iconBox;\n return this.collisionIndex.placeCollisionBox(shiftedIconBox,\n iconAllowOverlap, textPixelRatio, posMatrix, collisionGroup.predicate);\n };\n\n if (placedVerticalText && placedVerticalText.box && placedVerticalText.box.length && collisionArrays.verticalIconBox) {\n placedIconBoxes = placeIconFeature(collisionArrays.verticalIconBox);\n placeIcon = placedIconBoxes.box.length > 0;\n } else {\n placedIconBoxes = placeIconFeature(collisionArrays.iconBox);\n placeIcon = placedIconBoxes.box.length > 0;\n }\n offscreen = offscreen && placedIconBoxes.offscreen;\n }\n\n const iconWithoutText = textOptional ||\n (symbolInstance.numHorizontalGlyphVertices === 0 && symbolInstance.numVerticalGlyphVertices === 0);\n const textWithoutIcon = iconOptional || symbolInstance.numIconVertices === 0;\n\n // Combine the scales for icons and text.\n if (!iconWithoutText && !textWithoutIcon) {\n placeIcon = placeText = placeIcon && placeText;\n } else if (!textWithoutIcon) {\n placeText = placeIcon && placeText;\n } else if (!iconWithoutText) {\n placeIcon = placeIcon && placeText;\n }\n\n if (placeText && placedGlyphBoxes && placedGlyphBoxes.box) {\n if (placedVerticalText && placedVerticalText.box && verticalTextFeatureIndex) {\n this.collisionIndex.insertCollisionBox(placedGlyphBoxes.box, layout.get('text-ignore-placement'),\n bucket.bucketInstanceId, verticalTextFeatureIndex, collisionGroup.ID);\n } else {\n this.collisionIndex.insertCollisionBox(placedGlyphBoxes.box, layout.get('text-ignore-placement'),\n bucket.bucketInstanceId, textFeatureIndex, collisionGroup.ID);\n }\n\n }\n if (placeIcon && placedIconBoxes) {\n this.collisionIndex.insertCollisionBox(placedIconBoxes.box, layout.get('icon-ignore-placement'),\n bucket.bucketInstanceId, iconFeatureIndex, collisionGroup.ID);\n }\n if (placedGlyphCircles) {\n if (placeText) {\n this.collisionIndex.insertCollisionCircles(placedGlyphCircles.circles, layout.get('text-ignore-placement'),\n bucket.bucketInstanceId, textFeatureIndex, collisionGroup.ID);\n }\n\n if (showCollisionBoxes) {\n const id = bucket.bucketInstanceId;\n let circleArray = this.collisionCircleArrays[id];\n\n // Group collision circles together by bucket. Circles can't be pushed forward for rendering yet as the symbol placement\n // for a bucket is not guaranteed to be complete before the commit-function has been called\n if (circleArray === undefined)\n circleArray = this.collisionCircleArrays[id] = new CollisionCircleArray();\n\n for (let i = 0; i < placedGlyphCircles.circles.length; i += 4) {\n circleArray.circles.push(placedGlyphCircles.circles[i + 0]); // x\n circleArray.circles.push(placedGlyphCircles.circles[i + 1]); // y\n circleArray.circles.push(placedGlyphCircles.circles[i + 2]); // radius\n circleArray.circles.push(placedGlyphCircles.collisionDetected ? 1 : 0); // collisionDetected-flag\n }\n }\n }\n\n assert(symbolInstance.crossTileID !== 0);\n assert(bucket.bucketInstanceId !== 0);\n\n this.placements[symbolInstance.crossTileID] = new JointPlacement(placeText || alwaysShowText, placeIcon || alwaysShowIcon, offscreen || bucket.justReloaded);\n seenCrossTileIDs[symbolInstance.crossTileID] = true;\n };\n\n if (zOrderByViewportY) {\n assert(bucketPart.symbolInstanceStart === 0);\n const symbolIndexes = bucket.getSortedSymbolIndexes(this.transform.angle);\n for (let i = symbolIndexes.length - 1; i >= 0; --i) {\n const symbolIndex = symbolIndexes[i];\n placeSymbol(bucket.symbolInstances.get(symbolIndex), bucket.collisionArrays[symbolIndex]);\n }\n } else {\n for (let i = bucketPart.symbolInstanceStart; i < bucketPart.symbolInstanceEnd; i++) {\n placeSymbol(bucket.symbolInstances.get(i), bucket.collisionArrays[i]);\n }\n }\n\n if (showCollisionBoxes && bucket.bucketInstanceId in this.collisionCircleArrays) {\n const circleArray = this.collisionCircleArrays[bucket.bucketInstanceId];\n\n // Store viewport and inverse projection matrices per bucket\n mat4.invert(circleArray.invProjMatrix, posMatrix);\n circleArray.viewportMatrix = this.collisionIndex.getViewportMatrix();\n }\n\n bucket.justReloaded = false;\n }\n\n markUsedJustification(bucket: SymbolBucket, placedAnchor: TextAnchor, symbolInstance: SymbolInstance, orientation: number) {\n const justifications = {\n \"left\": symbolInstance.leftJustifiedTextSymbolIndex,\n \"center\": symbolInstance.centerJustifiedTextSymbolIndex,\n \"right\": symbolInstance.rightJustifiedTextSymbolIndex\n };\n\n let autoIndex;\n if (orientation === WritingMode.vertical) {\n autoIndex = symbolInstance.verticalPlacedTextSymbolIndex;\n } else {\n autoIndex = justifications[getAnchorJustification(placedAnchor)];\n }\n\n const indexes = [\n symbolInstance.leftJustifiedTextSymbolIndex,\n symbolInstance.centerJustifiedTextSymbolIndex,\n symbolInstance.rightJustifiedTextSymbolIndex,\n symbolInstance.verticalPlacedTextSymbolIndex\n ];\n\n for (const index of indexes) {\n if (index >= 0) {\n if (autoIndex >= 0 && index !== autoIndex) {\n // There are multiple justifications and this one isn't it: shift offscreen\n bucket.text.placedSymbolArray.get(index).crossTileID = 0;\n } else {\n // Either this is the chosen justification or the justification is hardwired: use this one\n bucket.text.placedSymbolArray.get(index).crossTileID = symbolInstance.crossTileID;\n }\n }\n }\n }\n\n markUsedOrientation(bucket: SymbolBucket, orientation: number, symbolInstance: SymbolInstance) {\n const horizontal = (orientation === WritingMode.horizontal || orientation === WritingMode.horizontalOnly) ? orientation : 0;\n const vertical = orientation === WritingMode.vertical ? orientation : 0;\n\n const horizontalIndexes = [\n symbolInstance.leftJustifiedTextSymbolIndex,\n symbolInstance.centerJustifiedTextSymbolIndex,\n symbolInstance.rightJustifiedTextSymbolIndex\n ];\n\n for (const index of horizontalIndexes) {\n bucket.text.placedSymbolArray.get(index).placedOrientation = horizontal;\n }\n\n if (symbolInstance.verticalPlacedTextSymbolIndex) {\n bucket.text.placedSymbolArray.get(symbolInstance.verticalPlacedTextSymbolIndex).placedOrientation = vertical;\n }\n }\n\n commit(now: number): void {\n this.commitTime = now;\n this.zoomAtLastRecencyCheck = this.transform.zoom;\n\n const prevPlacement = this.prevPlacement;\n let placementChanged = false;\n\n this.prevZoomAdjustment = prevPlacement ? prevPlacement.zoomAdjustment(this.transform.zoom) : 0;\n const increment = prevPlacement ? prevPlacement.symbolFadeChange(now) : 1;\n\n const prevOpacities = prevPlacement ? prevPlacement.opacities : {};\n const prevOffsets = prevPlacement ? prevPlacement.variableOffsets : {};\n const prevOrientations = prevPlacement ? prevPlacement.placedOrientations : {};\n\n // add the opacities from the current placement, and copy their current values from the previous placement\n for (const crossTileID in this.placements) {\n const jointPlacement = this.placements[crossTileID];\n const prevOpacity = prevOpacities[crossTileID];\n if (prevOpacity) {\n this.opacities[crossTileID] = new JointOpacityState(prevOpacity, increment, jointPlacement.text, jointPlacement.icon);\n placementChanged = placementChanged ||\n jointPlacement.text !== prevOpacity.text.placed ||\n jointPlacement.icon !== prevOpacity.icon.placed;\n } else {\n this.opacities[crossTileID] = new JointOpacityState(null, increment, jointPlacement.text, jointPlacement.icon, jointPlacement.skipFade);\n placementChanged = placementChanged || jointPlacement.text || jointPlacement.icon;\n }\n }\n\n // copy and update values from the previous placement that aren't in the current placement but haven't finished fading\n for (const crossTileID in prevOpacities) {\n const prevOpacity = prevOpacities[crossTileID];\n if (!this.opacities[crossTileID]) {\n const jointOpacity = new JointOpacityState(prevOpacity, increment, false, false);\n if (!jointOpacity.isHidden()) {\n this.opacities[crossTileID] = jointOpacity;\n placementChanged = placementChanged || prevOpacity.text.placed || prevOpacity.icon.placed;\n }\n }\n }\n for (const crossTileID in prevOffsets) {\n if (!this.variableOffsets[crossTileID] && this.opacities[crossTileID] && !this.opacities[crossTileID].isHidden()) {\n this.variableOffsets[crossTileID] = prevOffsets[crossTileID];\n }\n }\n\n for (const crossTileID in prevOrientations) {\n if (!this.placedOrientations[crossTileID] && this.opacities[crossTileID] && !this.opacities[crossTileID].isHidden()) {\n this.placedOrientations[crossTileID] = prevOrientations[crossTileID];\n }\n }\n\n // this.lastPlacementChangeTime is the time of the last commit() that\n // resulted in a placement change -- in other words, the start time of\n // the last symbol fade animation\n assert(!prevPlacement || prevPlacement.lastPlacementChangeTime !== undefined);\n if (placementChanged) {\n this.lastPlacementChangeTime = now;\n } else if (typeof this.lastPlacementChangeTime !== 'number') {\n this.lastPlacementChangeTime = prevPlacement ? prevPlacement.lastPlacementChangeTime : now;\n }\n }\n\n updateLayerOpacities(styleLayer: StyleLayer, tiles: Array) {\n const seenCrossTileIDs = {};\n for (const tile of tiles) {\n const symbolBucket = ((tile.getBucket(styleLayer): any): SymbolBucket);\n if (symbolBucket && tile.latestFeatureIndex && styleLayer.id === symbolBucket.layerIds[0]) {\n this.updateBucketOpacities(symbolBucket, seenCrossTileIDs, tile.collisionBoxArray);\n }\n }\n }\n\n updateBucketOpacities(bucket: SymbolBucket, seenCrossTileIDs: { [string | number]: boolean }, collisionBoxArray: ?CollisionBoxArray) {\n if (bucket.hasTextData()) bucket.text.opacityVertexArray.clear();\n if (bucket.hasIconData()) bucket.icon.opacityVertexArray.clear();\n if (bucket.hasIconCollisionBoxData()) bucket.iconCollisionBox.collisionVertexArray.clear();\n if (bucket.hasTextCollisionBoxData()) bucket.textCollisionBox.collisionVertexArray.clear();\n\n const layout = bucket.layers[0].layout;\n const duplicateOpacityState = new JointOpacityState(null, 0, false, false, true);\n const textAllowOverlap = layout.get('text-allow-overlap');\n const iconAllowOverlap = layout.get('icon-allow-overlap');\n const variablePlacement = layout.get('text-variable-anchor');\n const rotateWithMap = layout.get('text-rotation-alignment') === 'map';\n const pitchWithMap = layout.get('text-pitch-alignment') === 'map';\n const hasIconTextFit = layout.get('icon-text-fit') !== 'none';\n // If allow-overlap is true, we can show symbols before placement runs on them\n // But we have to wait for placement if we potentially depend on a paired icon/text\n // with allow-overlap: false.\n // See https://github.com/mapbox/mapbox-gl-js/issues/7032\n const defaultOpacityState = new JointOpacityState(null, 0,\n textAllowOverlap && (iconAllowOverlap || !bucket.hasIconData() || layout.get('icon-optional')),\n iconAllowOverlap && (textAllowOverlap || !bucket.hasTextData() || layout.get('text-optional')),\n true);\n\n if (!bucket.collisionArrays && collisionBoxArray && ((bucket.hasIconCollisionBoxData() || bucket.hasTextCollisionBoxData()))) {\n bucket.deserializeCollisionBoxes(collisionBoxArray);\n }\n\n const addOpacities = (iconOrText, numVertices: number, opacity: number) => {\n for (let i = 0; i < numVertices / 4; i++) {\n iconOrText.opacityVertexArray.emplaceBack(opacity);\n }\n };\n\n for (let s = 0; s < bucket.symbolInstances.length; s++) {\n const symbolInstance = bucket.symbolInstances.get(s);\n const {\n numHorizontalGlyphVertices,\n numVerticalGlyphVertices,\n crossTileID\n } = symbolInstance;\n\n const isDuplicate = seenCrossTileIDs[crossTileID];\n\n let opacityState = this.opacities[crossTileID];\n if (isDuplicate) {\n opacityState = duplicateOpacityState;\n } else if (!opacityState) {\n opacityState = defaultOpacityState;\n // store the state so that future placements use it as a starting point\n this.opacities[crossTileID] = opacityState;\n }\n\n seenCrossTileIDs[crossTileID] = true;\n\n const hasText = numHorizontalGlyphVertices > 0 || numVerticalGlyphVertices > 0;\n const hasIcon = symbolInstance.numIconVertices > 0;\n\n const placedOrientation = this.placedOrientations[symbolInstance.crossTileID];\n const horizontalHidden = placedOrientation === WritingMode.vertical;\n const verticalHidden = placedOrientation === WritingMode.horizontal || placedOrientation === WritingMode.horizontalOnly;\n\n if (hasText) {\n const packedOpacity = packOpacity(opacityState.text);\n // Vertical text fades in/out on collision the same way as corresponding\n // horizontal text. Switch between vertical/horizontal should be instantaneous\n const horizontalOpacity = horizontalHidden ? PACKED_HIDDEN_OPACITY : packedOpacity;\n addOpacities(bucket.text, numHorizontalGlyphVertices, horizontalOpacity);\n const verticalOpacity = verticalHidden ? PACKED_HIDDEN_OPACITY : packedOpacity;\n addOpacities(bucket.text, numVerticalGlyphVertices, verticalOpacity);\n\n // If this label is completely faded, mark it so that we don't have to calculate\n // its position at render time. If this layer has variable placement, shift the various\n // symbol instances appropriately so that symbols from buckets that have yet to be placed\n // offset appropriately.\n const symbolHidden = opacityState.text.isHidden();\n [\n symbolInstance.rightJustifiedTextSymbolIndex,\n symbolInstance.centerJustifiedTextSymbolIndex,\n symbolInstance.leftJustifiedTextSymbolIndex\n ].forEach(index => {\n if (index >= 0) {\n bucket.text.placedSymbolArray.get(index).hidden = symbolHidden || horizontalHidden ? 1 : 0;\n }\n });\n\n if (symbolInstance.verticalPlacedTextSymbolIndex >= 0) {\n bucket.text.placedSymbolArray.get(symbolInstance.verticalPlacedTextSymbolIndex).hidden = symbolHidden || verticalHidden ? 1 : 0;\n }\n\n const prevOffset = this.variableOffsets[symbolInstance.crossTileID];\n if (prevOffset) {\n this.markUsedJustification(bucket, prevOffset.anchor, symbolInstance, placedOrientation);\n }\n\n const prevOrientation = this.placedOrientations[symbolInstance.crossTileID];\n if (prevOrientation) {\n this.markUsedJustification(bucket, 'left', symbolInstance, prevOrientation);\n this.markUsedOrientation(bucket, prevOrientation, symbolInstance);\n }\n }\n\n if (hasIcon) {\n const packedOpacity = packOpacity(opacityState.icon);\n\n const useHorizontal = !(hasIconTextFit && symbolInstance.verticalPlacedIconSymbolIndex && horizontalHidden);\n\n if (symbolInstance.placedIconSymbolIndex >= 0) {\n const horizontalOpacity = useHorizontal ? packedOpacity : PACKED_HIDDEN_OPACITY;\n addOpacities(bucket.icon, symbolInstance.numIconVertices, horizontalOpacity);\n bucket.icon.placedSymbolArray.get(symbolInstance.placedIconSymbolIndex).hidden =\n (opacityState.icon.isHidden(): any);\n }\n\n if (symbolInstance.verticalPlacedIconSymbolIndex >= 0) {\n const verticalOpacity = !useHorizontal ? packedOpacity : PACKED_HIDDEN_OPACITY;\n addOpacities(bucket.icon, symbolInstance.numVerticalIconVertices, verticalOpacity);\n bucket.icon.placedSymbolArray.get(symbolInstance.verticalPlacedIconSymbolIndex).hidden =\n (opacityState.icon.isHidden(): any);\n }\n }\n\n if (bucket.hasIconCollisionBoxData() || bucket.hasTextCollisionBoxData()) {\n const collisionArrays = bucket.collisionArrays[s];\n if (collisionArrays) {\n let shift = new Point(0, 0);\n if (collisionArrays.textBox || collisionArrays.verticalTextBox) {\n let used = true;\n if (variablePlacement) {\n const variableOffset = this.variableOffsets[crossTileID];\n if (variableOffset) {\n // This will show either the currently placed position or the last\n // successfully placed position (so you can visualize what collision\n // just made the symbol disappear, and the most likely place for the\n // symbol to come back)\n shift = calculateVariableLayoutShift(variableOffset.anchor,\n variableOffset.width,\n variableOffset.height,\n variableOffset.textOffset,\n variableOffset.textBoxScale);\n if (rotateWithMap) {\n shift._rotate(pitchWithMap ? this.transform.angle : -this.transform.angle);\n }\n } else {\n // No offset -> this symbol hasn't been placed since coming on-screen\n // No single box is particularly meaningful and all of them would be too noisy\n // Use the center box just to show something's there, but mark it \"not used\"\n used = false;\n }\n }\n\n if (collisionArrays.textBox) {\n updateCollisionVertices(bucket.textCollisionBox.collisionVertexArray, opacityState.text.placed, !used || horizontalHidden, shift.x, shift.y);\n }\n if (collisionArrays.verticalTextBox) {\n updateCollisionVertices(bucket.textCollisionBox.collisionVertexArray, opacityState.text.placed, !used || verticalHidden, shift.x, shift.y);\n }\n }\n\n const verticalIconUsed = Boolean(!verticalHidden && collisionArrays.verticalIconBox);\n\n if (collisionArrays.iconBox) {\n updateCollisionVertices(bucket.iconCollisionBox.collisionVertexArray, opacityState.icon.placed, verticalIconUsed,\n hasIconTextFit ? shift.x : 0,\n hasIconTextFit ? shift.y : 0);\n }\n\n if (collisionArrays.verticalIconBox) {\n updateCollisionVertices(bucket.iconCollisionBox.collisionVertexArray, opacityState.icon.placed, !verticalIconUsed,\n hasIconTextFit ? shift.x : 0,\n hasIconTextFit ? shift.y : 0);\n }\n }\n }\n }\n\n bucket.sortFeatures(this.transform.angle);\n if (this.retainedQueryData[bucket.bucketInstanceId]) {\n this.retainedQueryData[bucket.bucketInstanceId].featureSortOrder = bucket.featureSortOrder;\n }\n\n if (bucket.hasTextData() && bucket.text.opacityVertexBuffer) {\n bucket.text.opacityVertexBuffer.updateData(bucket.text.opacityVertexArray);\n }\n if (bucket.hasIconData() && bucket.icon.opacityVertexBuffer) {\n bucket.icon.opacityVertexBuffer.updateData(bucket.icon.opacityVertexArray);\n }\n if (bucket.hasIconCollisionBoxData() && bucket.iconCollisionBox.collisionVertexBuffer) {\n bucket.iconCollisionBox.collisionVertexBuffer.updateData(bucket.iconCollisionBox.collisionVertexArray);\n }\n if (bucket.hasTextCollisionBoxData() && bucket.textCollisionBox.collisionVertexBuffer) {\n bucket.textCollisionBox.collisionVertexBuffer.updateData(bucket.textCollisionBox.collisionVertexArray);\n }\n\n assert(bucket.text.opacityVertexArray.length === bucket.text.layoutVertexArray.length / 4);\n assert(bucket.icon.opacityVertexArray.length === bucket.icon.layoutVertexArray.length / 4);\n\n // Push generated collision circles to the bucket for debug rendering\n if (bucket.bucketInstanceId in this.collisionCircleArrays) {\n const instance = this.collisionCircleArrays[bucket.bucketInstanceId];\n\n bucket.placementInvProjMatrix = instance.invProjMatrix;\n bucket.placementViewportMatrix = instance.viewportMatrix;\n bucket.collisionCircleArray = instance.circles;\n\n delete this.collisionCircleArrays[bucket.bucketInstanceId];\n }\n }\n\n symbolFadeChange(now: number) {\n return this.fadeDuration === 0 ?\n 1 :\n ((now - this.commitTime) / this.fadeDuration + this.prevZoomAdjustment);\n }\n\n zoomAdjustment(zoom: number) {\n // When zooming out quickly, labels can overlap each other. This\n // adjustment is used to reduce the interval between placement calculations\n // and to reduce the fade duration when zooming out quickly. Discovering the\n // collisions more quickly and fading them more quickly reduces the unwanted effect.\n return Math.max(0, (this.transform.zoom - zoom) / 1.5);\n }\n\n hasTransitions(now: number) {\n return this.stale ||\n now - this.lastPlacementChangeTime < this.fadeDuration;\n }\n\n stillRecent(now: number, zoom: number) {\n // The adjustment makes placement more frequent when zooming.\n // This condition applies the adjustment only after the map has\n // stopped zooming. This avoids adding extra jank while zooming.\n const durationAdjustment = this.zoomAtLastRecencyCheck === zoom ?\n (1 - this.zoomAdjustment(zoom)) :\n 1;\n this.zoomAtLastRecencyCheck = zoom;\n\n return this.commitTime + this.fadeDuration * durationAdjustment > now;\n }\n\n setStale() {\n this.stale = true;\n }\n}\n\nfunction updateCollisionVertices(collisionVertexArray: CollisionVertexArray, placed: boolean, notUsed: boolean | number, shiftX?: number, shiftY?: number) {\n collisionVertexArray.emplaceBack(placed ? 1 : 0, notUsed ? 1 : 0, shiftX || 0, shiftY || 0);\n collisionVertexArray.emplaceBack(placed ? 1 : 0, notUsed ? 1 : 0, shiftX || 0, shiftY || 0);\n collisionVertexArray.emplaceBack(placed ? 1 : 0, notUsed ? 1 : 0, shiftX || 0, shiftY || 0);\n collisionVertexArray.emplaceBack(placed ? 1 : 0, notUsed ? 1 : 0, shiftX || 0, shiftY || 0);\n}\n\n// All four vertices for a glyph will have the same opacity state\n// So we pack the opacity into a uint8, and then repeat it four times\n// to make a single uint32 that we can upload for each glyph in the\n// label.\nconst shift25 = Math.pow(2, 25);\nconst shift24 = Math.pow(2, 24);\nconst shift17 = Math.pow(2, 17);\nconst shift16 = Math.pow(2, 16);\nconst shift9 = Math.pow(2, 9);\nconst shift8 = Math.pow(2, 8);\nconst shift1 = Math.pow(2, 1);\nfunction packOpacity(opacityState: OpacityState): number {\n if (opacityState.opacity === 0 && !opacityState.placed) {\n return 0;\n } else if (opacityState.opacity === 1 && opacityState.placed) {\n return 4294967295;\n }\n const targetBit = opacityState.placed ? 1 : 0;\n const opacityBits = Math.floor(opacityState.opacity * 127);\n return opacityBits * shift25 + targetBit * shift24 +\n opacityBits * shift17 + targetBit * shift16 +\n opacityBits * shift9 + targetBit * shift8 +\n opacityBits * shift1 + targetBit;\n}\n\nconst PACKED_HIDDEN_OPACITY = 0;\n", "// @flow\n\nimport browser from '../util/browser';\n\nimport {Placement} from '../symbol/placement';\n\nimport type Transform from '../geo/transform';\nimport type StyleLayer from './style_layer';\nimport type SymbolStyleLayer from './style_layer/symbol_style_layer';\nimport type Tile from '../source/tile';\nimport type {BucketPart} from '../symbol/placement';\n\nclass LayerPlacement {\n _sortAcrossTiles: boolean;\n _currentTileIndex: number;\n _currentPartIndex: number;\n _seenCrossTileIDs: { [string | number]: boolean };\n _bucketParts: Array;\n\n constructor(styleLayer: SymbolStyleLayer) {\n this._sortAcrossTiles = styleLayer.layout.get('symbol-z-order') !== 'viewport-y' &&\n styleLayer.layout.get('symbol-sort-key').constantOr(1) !== undefined;\n\n this._currentTileIndex = 0;\n this._currentPartIndex = 0;\n this._seenCrossTileIDs = {};\n this._bucketParts = [];\n }\n\n continuePlacement(tiles: Array, placement: Placement, showCollisionBoxes: boolean, styleLayer: StyleLayer, shouldPausePlacement: () => boolean) {\n\n const bucketParts = this._bucketParts;\n\n while (this._currentTileIndex < tiles.length) {\n const tile = tiles[this._currentTileIndex];\n placement.getBucketParts(bucketParts, styleLayer, tile, this._sortAcrossTiles);\n\n this._currentTileIndex++;\n if (shouldPausePlacement()) {\n return true;\n }\n }\n\n if (this._sortAcrossTiles) {\n this._sortAcrossTiles = false;\n bucketParts.sort((a, b) => ((a.sortKey: any): number) - ((b.sortKey: any): number));\n }\n\n while (this._currentPartIndex < bucketParts.length) {\n const bucketPart = bucketParts[this._currentPartIndex];\n placement.placeLayerBucketPart(bucketPart, this._seenCrossTileIDs, showCollisionBoxes);\n\n this._currentPartIndex++;\n if (shouldPausePlacement()) {\n return true;\n }\n }\n return false;\n }\n}\n\nclass PauseablePlacement {\n placement: Placement;\n _done: boolean;\n _currentPlacementIndex: number;\n _forceFullPlacement: boolean;\n _showCollisionBoxes: boolean;\n _inProgressLayer: ?LayerPlacement;\n\n constructor(transform: Transform, order: Array,\n forceFullPlacement: boolean,\n showCollisionBoxes: boolean,\n fadeDuration: number,\n crossSourceCollisions: boolean,\n prevPlacement?: Placement) {\n\n this.placement = new Placement(transform, fadeDuration, crossSourceCollisions, prevPlacement);\n this._currentPlacementIndex = order.length - 1;\n this._forceFullPlacement = forceFullPlacement;\n this._showCollisionBoxes = showCollisionBoxes;\n this._done = false;\n }\n\n isDone(): boolean {\n return this._done;\n }\n\n continuePlacement(order: Array, layers: {[_: string]: StyleLayer}, layerTiles: {[_: string]: Array}) {\n const startTime = browser.now();\n\n const shouldPausePlacement = () => {\n const elapsedTime = browser.now() - startTime;\n return this._forceFullPlacement ? false : elapsedTime > 2;\n };\n\n while (this._currentPlacementIndex >= 0) {\n const layerId = order[this._currentPlacementIndex];\n const layer = layers[layerId];\n const placementZoom = this.placement.collisionIndex.transform.zoom;\n if (layer.type === 'symbol' &&\n (!layer.minzoom || layer.minzoom <= placementZoom) &&\n (!layer.maxzoom || layer.maxzoom > placementZoom)) {\n\n if (!this._inProgressLayer) {\n this._inProgressLayer = new LayerPlacement(((layer: any): SymbolStyleLayer));\n }\n\n const pausePlacement = this._inProgressLayer.continuePlacement(layerTiles[layer.source], this.placement, this._showCollisionBoxes, layer, shouldPausePlacement);\n\n if (pausePlacement) {\n // We didn't finish placing all layers within 2ms,\n // but we can keep rendering with a partial placement\n // We'll resume here on the next frame\n return;\n }\n\n delete this._inProgressLayer;\n }\n\n this._currentPlacementIndex--;\n }\n\n this._done = true;\n }\n\n commit(now: number) {\n this.placement.commit(now);\n return this.placement;\n }\n}\n\nexport default PauseablePlacement;\n", "// @flow\n\nimport EXTENT from '../data/extent';\n\nimport {SymbolInstanceArray} from '../data/array_types';\n\nimport type {SymbolInstance} from '../data/array_types';\nimport type {OverscaledTileID} from '../source/tile_id';\nimport type SymbolBucket from '../data/bucket/symbol_bucket';\nimport type StyleLayer from '../style/style_layer';\nimport type Tile from '../source/tile';\n\n/*\n The CrossTileSymbolIndex generally works on the assumption that\n a conceptual \"unique symbol\" can be identified by the text of\n the label combined with the anchor point. The goal is to assign\n these conceptual \"unique symbols\" a shared crossTileID that can be\n used by Placement to keep fading opacity states consistent and to\n deduplicate labels.\n\n The CrossTileSymbolIndex indexes all the current symbol instances and\n their crossTileIDs. When a symbol bucket gets added or updated, the\n index assigns a crossTileID to each of it's symbol instances by either\n matching it with an existing id or assigning a new one.\n*/\n\n// Round anchor positions to roughly 4 pixel grid\nconst roundingFactor = 512 / EXTENT / 2;\n\nclass TileLayerIndex {\n tileID: OverscaledTileID;\n indexedSymbolInstances: {[_: number]: Array<{\n crossTileID: number,\n coord: {\n x: number,\n y: number\n }\n }>};\n bucketInstanceId: number;\n\n constructor(tileID: OverscaledTileID, symbolInstances: SymbolInstanceArray, bucketInstanceId: number) {\n this.tileID = tileID;\n this.indexedSymbolInstances = {};\n this.bucketInstanceId = bucketInstanceId;\n\n for (let i = 0; i < symbolInstances.length; i++) {\n const symbolInstance = symbolInstances.get(i);\n const key = symbolInstance.key;\n if (!this.indexedSymbolInstances[key]) {\n this.indexedSymbolInstances[key] = [];\n }\n // This tile may have multiple symbol instances with the same key\n // Store each one along with its coordinates\n this.indexedSymbolInstances[key].push({\n crossTileID: symbolInstance.crossTileID,\n coord: this.getScaledCoordinates(symbolInstance, tileID)\n });\n }\n }\n\n // Converts the coordinates of the input symbol instance into coordinates that be can compared\n // against other symbols in this index. Coordinates are:\n // (1) world-based (so after conversion the source tile is irrelevant)\n // (2) converted to the z-scale of this TileLayerIndex\n // (3) down-sampled by \"roundingFactor\" from tile coordinate precision in order to be\n // more tolerant of small differences between tiles.\n getScaledCoordinates(symbolInstance: SymbolInstance, childTileID: OverscaledTileID) {\n const zDifference = childTileID.canonical.z - this.tileID.canonical.z;\n const scale = roundingFactor / Math.pow(2, zDifference);\n return {\n x: Math.floor((childTileID.canonical.x * EXTENT + symbolInstance.anchorX) * scale),\n y: Math.floor((childTileID.canonical.y * EXTENT + symbolInstance.anchorY) * scale)\n };\n }\n\n findMatches(symbolInstances: SymbolInstanceArray, newTileID: OverscaledTileID, zoomCrossTileIDs: {[crossTileID: number]: boolean}) {\n const tolerance = this.tileID.canonical.z < newTileID.canonical.z ? 1 : Math.pow(2, this.tileID.canonical.z - newTileID.canonical.z);\n\n for (let i = 0; i < symbolInstances.length; i++) {\n const symbolInstance = symbolInstances.get(i);\n if (symbolInstance.crossTileID) {\n // already has a match, skip\n continue;\n }\n\n const indexedInstances = this.indexedSymbolInstances[symbolInstance.key];\n if (!indexedInstances) {\n // No symbol with this key in this bucket\n continue;\n }\n\n const scaledSymbolCoord = this.getScaledCoordinates(symbolInstance, newTileID);\n\n for (const thisTileSymbol of indexedInstances) {\n // Return any symbol with the same keys whose coordinates are within 1\n // grid unit. (with a 4px grid, this covers a 12px by 12px area)\n if (Math.abs(thisTileSymbol.coord.x - scaledSymbolCoord.x) <= tolerance &&\n Math.abs(thisTileSymbol.coord.y - scaledSymbolCoord.y) <= tolerance &&\n !zoomCrossTileIDs[thisTileSymbol.crossTileID]) {\n // Once we've marked ourselves duplicate against this parent symbol,\n // don't let any other symbols at the same zoom level duplicate against\n // the same parent (see issue #5993)\n zoomCrossTileIDs[thisTileSymbol.crossTileID] = true;\n symbolInstance.crossTileID = thisTileSymbol.crossTileID;\n break;\n }\n }\n }\n }\n}\n\nclass CrossTileIDs {\n maxCrossTileID: number;\n constructor() {\n this.maxCrossTileID = 0;\n }\n generate() {\n return ++this.maxCrossTileID;\n }\n}\n\nclass CrossTileSymbolLayerIndex {\n indexes: {[zoom: string | number]: {[tileId: string | number]: TileLayerIndex}};\n usedCrossTileIDs: {[zoom: string | number]: {[crossTileID: number]: boolean}};\n lng: number;\n\n constructor() {\n this.indexes = {};\n this.usedCrossTileIDs = {};\n this.lng = 0;\n }\n\n /*\n * Sometimes when a user pans across the antimeridian the longitude value gets wrapped.\n * To prevent labels from flashing out and in we adjust the tileID values in the indexes\n * so that they match the new wrapped version of the map.\n */\n handleWrapJump(lng: number) {\n const wrapDelta = Math.round((lng - this.lng) / 360);\n if (wrapDelta !== 0) {\n for (const zoom in this.indexes) {\n const zoomIndexes = this.indexes[zoom];\n const newZoomIndex = {};\n for (const key in zoomIndexes) {\n // change the tileID's wrap and add it to a new index\n const index = zoomIndexes[key];\n index.tileID = index.tileID.unwrapTo(index.tileID.wrap + wrapDelta);\n newZoomIndex[index.tileID.key] = index;\n }\n this.indexes[zoom] = newZoomIndex;\n }\n }\n this.lng = lng;\n }\n\n addBucket(tileID: OverscaledTileID, bucket: SymbolBucket, crossTileIDs: CrossTileIDs) {\n if (this.indexes[tileID.overscaledZ] &&\n this.indexes[tileID.overscaledZ][tileID.key]) {\n if (this.indexes[tileID.overscaledZ][tileID.key].bucketInstanceId ===\n bucket.bucketInstanceId) {\n return false;\n } else {\n // We're replacing this bucket with an updated version\n // Remove the old bucket's \"used crossTileIDs\" now so that\n // the new bucket can claim them.\n // The old index entries themselves stick around until\n // 'removeStaleBuckets' is called.\n this.removeBucketCrossTileIDs(tileID.overscaledZ,\n this.indexes[tileID.overscaledZ][tileID.key]);\n }\n }\n\n for (let i = 0; i < bucket.symbolInstances.length; i++) {\n const symbolInstance = bucket.symbolInstances.get(i);\n symbolInstance.crossTileID = 0;\n }\n\n if (!this.usedCrossTileIDs[tileID.overscaledZ]) {\n this.usedCrossTileIDs[tileID.overscaledZ] = {};\n }\n const zoomCrossTileIDs = this.usedCrossTileIDs[tileID.overscaledZ];\n\n for (const zoom in this.indexes) {\n const zoomIndexes = this.indexes[zoom];\n if (Number(zoom) > tileID.overscaledZ) {\n for (const id in zoomIndexes) {\n const childIndex = zoomIndexes[id];\n if (childIndex.tileID.isChildOf(tileID)) {\n childIndex.findMatches(bucket.symbolInstances, tileID, zoomCrossTileIDs);\n }\n }\n } else {\n const parentCoord = tileID.scaledTo(Number(zoom));\n const parentIndex = zoomIndexes[parentCoord.key];\n if (parentIndex) {\n parentIndex.findMatches(bucket.symbolInstances, tileID, zoomCrossTileIDs);\n }\n }\n }\n\n for (let i = 0; i < bucket.symbolInstances.length; i++) {\n const symbolInstance = bucket.symbolInstances.get(i);\n if (!symbolInstance.crossTileID) {\n // symbol did not match any known symbol, assign a new id\n symbolInstance.crossTileID = crossTileIDs.generate();\n zoomCrossTileIDs[symbolInstance.crossTileID] = true;\n }\n }\n\n if (this.indexes[tileID.overscaledZ] === undefined) {\n this.indexes[tileID.overscaledZ] = {};\n }\n this.indexes[tileID.overscaledZ][tileID.key] = new TileLayerIndex(tileID, bucket.symbolInstances, bucket.bucketInstanceId);\n\n return true;\n }\n\n removeBucketCrossTileIDs(zoom: string | number, removedBucket: TileLayerIndex) {\n for (const key in removedBucket.indexedSymbolInstances) {\n for (const symbolInstance of removedBucket.indexedSymbolInstances[(key: any)]) {\n delete this.usedCrossTileIDs[zoom][symbolInstance.crossTileID];\n }\n }\n }\n\n removeStaleBuckets(currentIDs: { [string | number]: boolean }) {\n let tilesChanged = false;\n for (const z in this.indexes) {\n const zoomIndexes = this.indexes[z];\n for (const tileKey in zoomIndexes) {\n if (!currentIDs[zoomIndexes[tileKey].bucketInstanceId]) {\n this.removeBucketCrossTileIDs(z, zoomIndexes[tileKey]);\n delete zoomIndexes[tileKey];\n tilesChanged = true;\n }\n }\n }\n return tilesChanged;\n }\n}\n\nclass CrossTileSymbolIndex {\n layerIndexes: {[layerId: string]: CrossTileSymbolLayerIndex};\n crossTileIDs: CrossTileIDs;\n maxBucketInstanceId: number;\n bucketsInCurrentPlacement: {[_: number]: boolean};\n\n constructor() {\n this.layerIndexes = {};\n this.crossTileIDs = new CrossTileIDs();\n this.maxBucketInstanceId = 0;\n this.bucketsInCurrentPlacement = {};\n }\n\n addLayer(styleLayer: StyleLayer, tiles: Array, lng: number) {\n let layerIndex = this.layerIndexes[styleLayer.id];\n if (layerIndex === undefined) {\n layerIndex = this.layerIndexes[styleLayer.id] = new CrossTileSymbolLayerIndex();\n }\n\n let symbolBucketsChanged = false;\n const currentBucketIDs = {};\n\n layerIndex.handleWrapJump(lng);\n\n for (const tile of tiles) {\n const symbolBucket = ((tile.getBucket(styleLayer): any): SymbolBucket);\n if (!symbolBucket || styleLayer.id !== symbolBucket.layerIds[0])\n continue;\n\n if (!symbolBucket.bucketInstanceId) {\n symbolBucket.bucketInstanceId = ++this.maxBucketInstanceId;\n }\n\n if (layerIndex.addBucket(tile.tileID, symbolBucket, this.crossTileIDs)) {\n symbolBucketsChanged = true;\n }\n currentBucketIDs[symbolBucket.bucketInstanceId] = true;\n }\n\n if (layerIndex.removeStaleBuckets(currentBucketIDs)) {\n symbolBucketsChanged = true;\n }\n\n return symbolBucketsChanged;\n }\n\n pruneUnusedLayers(usedLayers: Array) {\n const usedLayerMap = {};\n usedLayers.forEach((usedLayer) => {\n usedLayerMap[usedLayer] = true;\n });\n for (const layerId in this.layerIndexes) {\n if (!usedLayerMap[layerId]) {\n delete this.layerIndexes[layerId];\n }\n }\n }\n}\n\nexport default CrossTileSymbolIndex;\n", "// @flow\n\nimport assert from 'assert';\n\nimport {Event, ErrorEvent, Evented} from '../util/evented';\nimport StyleLayer from './style_layer';\nimport createStyleLayer from './create_style_layer';\nimport loadSprite from './load_sprite';\nimport ImageManager from '../render/image_manager';\nimport GlyphManager from '../render/glyph_manager';\nimport Light from './light';\nimport LineAtlas from '../render/line_atlas';\nimport {pick, clone, extend, deepEqual, filterObject, mapObject} from '../util/util';\nimport {getJSON, getReferrer, makeRequest, ResourceType} from '../util/ajax';\nimport {isMapboxURL} from '../util/mapbox';\nimport browser from '../util/browser';\nimport Dispatcher from '../util/dispatcher';\nimport {validateStyle, emitValidationErrors as _emitValidationErrors} from './validate_style';\nimport {\n getType as getSourceType,\n setType as setSourceType,\n type SourceClass\n} from '../source/source';\nimport {queryRenderedFeatures, queryRenderedSymbols, querySourceFeatures} from '../source/query_features';\nimport SourceCache from '../source/source_cache';\nimport GeoJSONSource from '../source/geojson_source';\nimport styleSpec from '../style-spec/reference/latest';\nimport getWorkerPool from '../util/global_worker_pool';\nimport deref from '../style-spec/deref';\nimport emptyStyle from '../style-spec/empty';\nimport diffStyles, {operations as diffOperations} from '../style-spec/diff';\nimport {\n registerForPluginStateChange,\n evented as rtlTextPluginEvented,\n triggerPluginCompletionEvent\n} from '../source/rtl_text_plugin';\nimport PauseablePlacement from './pauseable_placement';\nimport ZoomHistory from './zoom_history';\nimport CrossTileSymbolIndex from '../symbol/cross_tile_symbol_index';\nimport {validateCustomStyleLayer} from './style_layer/custom_style_layer';\n\n// We're skipping validation errors with the `source.canvas` identifier in order\n// to continue to allow canvas sources to be added at runtime/updated in\n// smart setStyle (see https://github.com/mapbox/mapbox-gl-js/pull/6424):\nconst emitValidationErrors = (evented: Evented, errors: ?$ReadOnlyArray<{message: string, identifier?: string}>) =>\n _emitValidationErrors(evented, errors && errors.filter(error => error.identifier !== 'source.canvas'));\n\nimport type Map from '../ui/map';\nimport type Transform from '../geo/transform';\nimport type {StyleImage} from './style_image';\nimport type {StyleGlyph} from './style_glyph';\nimport type {Callback} from '../types/callback';\nimport type EvaluationParameters from './evaluation_parameters';\nimport type {Placement} from '../symbol/placement';\nimport type {Cancelable} from '../types/cancelable';\nimport type {RequestParameters, ResponseCallback} from '../util/ajax';\nimport type {GeoJSON} from '@mapbox/geojson-types';\nimport type {\n LayerSpecification,\n FilterSpecification,\n StyleSpecification,\n LightSpecification,\n SourceSpecification\n} from '../style-spec/types';\nimport type {CustomLayerInterface} from './style_layer/custom_style_layer';\nimport type {Validator} from './validate_style';\nimport type {OverscaledTileID} from '../source/tile_id';\n\nconst supportedDiffOperations = pick(diffOperations, [\n 'addLayer',\n 'removeLayer',\n 'setPaintProperty',\n 'setLayoutProperty',\n 'setFilter',\n 'addSource',\n 'removeSource',\n 'setLayerZoomRange',\n 'setLight',\n 'setTransition',\n 'setGeoJSONSourceData'\n // 'setGlyphs',\n // 'setSprite',\n]);\n\nconst ignoredDiffOperations = pick(diffOperations, [\n 'setCenter',\n 'setZoom',\n 'setBearing',\n 'setPitch'\n]);\n\nconst empty = emptyStyle();\n\nexport type StyleOptions = {\n validate?: boolean,\n localIdeographFontFamily?: string\n};\n\nexport type StyleSetterOptions = {\n validate?: boolean\n};\n/**\n * @private\n */\nclass Style extends Evented {\n map: Map;\n stylesheet: StyleSpecification;\n dispatcher: Dispatcher;\n imageManager: ImageManager;\n glyphManager: GlyphManager;\n lineAtlas: LineAtlas;\n light: Light;\n\n _request: ?Cancelable;\n _spriteRequest: ?Cancelable;\n _layers: {[_: string]: StyleLayer};\n _serializedLayers: {[_: string]: Object};\n _order: Array;\n sourceCaches: {[_: string]: SourceCache};\n zoomHistory: ZoomHistory;\n _loaded: boolean;\n _rtlTextPluginCallback: Function;\n _changed: boolean;\n _updatedSources: {[_: string]: 'clear' | 'reload'};\n _updatedLayers: {[_: string]: true};\n _removedLayers: {[_: string]: StyleLayer};\n _changedImages: {[_: string]: true};\n _updatedPaintProps: {[layer: string]: true};\n _layerOrderChanged: boolean;\n _availableImages: Array;\n\n crossTileSymbolIndex: CrossTileSymbolIndex;\n pauseablePlacement: PauseablePlacement;\n placement: Placement;\n z: number;\n\n // exposed to allow stubbing by unit tests\n static getSourceType: typeof getSourceType;\n static setSourceType: typeof setSourceType;\n static registerForPluginStateChange: typeof registerForPluginStateChange;\n\n constructor(map: Map, options: StyleOptions = {}) {\n super();\n\n this.map = map;\n this.dispatcher = new Dispatcher(getWorkerPool(), this);\n this.imageManager = new ImageManager();\n this.imageManager.setEventedParent(this);\n this.glyphManager = new GlyphManager(map._requestManager, options.localIdeographFontFamily);\n this.lineAtlas = new LineAtlas(256, 512);\n this.crossTileSymbolIndex = new CrossTileSymbolIndex();\n\n this._layers = {};\n this._serializedLayers = {};\n this._order = [];\n this.sourceCaches = {};\n this.zoomHistory = new ZoomHistory();\n this._loaded = false;\n this._availableImages = [];\n\n this._resetUpdates();\n\n this.dispatcher.broadcast('setReferrer', getReferrer());\n\n const self = this;\n this._rtlTextPluginCallback = Style.registerForPluginStateChange((event) => {\n const state = {\n pluginStatus: event.pluginStatus,\n pluginURL: event.pluginURL\n };\n self.dispatcher.broadcast('syncRTLPluginState', state, (err, results) => {\n triggerPluginCompletionEvent(err);\n if (results) {\n const allComplete = results.every((elem) => elem);\n if (allComplete) {\n for (const id in self.sourceCaches) {\n self.sourceCaches[id].reload(); // Should be a no-op if the plugin loads before any tiles load\n }\n }\n }\n\n });\n });\n\n this.on('data', (event) => {\n if (event.dataType !== 'source' || event.sourceDataType !== 'metadata') {\n return;\n }\n\n const sourceCache = this.sourceCaches[event.sourceId];\n if (!sourceCache) {\n return;\n }\n\n const source = sourceCache.getSource();\n if (!source || !source.vectorLayerIds) {\n return;\n }\n\n for (const layerId in this._layers) {\n const layer = this._layers[layerId];\n if (layer.source === source.id) {\n this._validateLayer(layer);\n }\n }\n });\n }\n\n loadURL(url: string, options: {\n validate?: boolean,\n accessToken?: string\n } = {}) {\n this.fire(new Event('dataloading', {dataType: 'style'}));\n\n const validate = typeof options.validate === 'boolean' ?\n options.validate : !isMapboxURL(url);\n\n url = this.map._requestManager.normalizeStyleURL(url, options.accessToken);\n const request = this.map._requestManager.transformRequest(url, ResourceType.Style);\n this._request = getJSON(request, (error: ?Error, json: ?Object) => {\n this._request = null;\n if (error) {\n this.fire(new ErrorEvent(error));\n } else if (json) {\n this._load(json, validate);\n }\n });\n }\n\n loadJSON(json: StyleSpecification, options: StyleSetterOptions = {}) {\n this.fire(new Event('dataloading', {dataType: 'style'}));\n\n this._request = browser.frame(() => {\n this._request = null;\n this._load(json, options.validate !== false);\n });\n }\n\n loadEmpty() {\n this.fire(new Event('dataloading', {dataType: 'style'}));\n this._load(empty, false);\n }\n\n _load(json: StyleSpecification, validate: boolean) {\n if (validate && emitValidationErrors(this, validateStyle(json))) {\n return;\n }\n\n this._loaded = true;\n this.stylesheet = json;\n\n for (const id in json.sources) {\n this.addSource(id, json.sources[id], {validate: false});\n }\n\n if (json.sprite) {\n this._loadSprite(json.sprite);\n } else {\n this.imageManager.setLoaded(true);\n }\n\n this.glyphManager.setURL(json.glyphs);\n\n const layers = deref(this.stylesheet.layers);\n\n this._order = layers.map((layer) => layer.id);\n\n this._layers = {};\n this._serializedLayers = {};\n for (let layer of layers) {\n layer = createStyleLayer(layer);\n layer.setEventedParent(this, {layer: {id: layer.id}});\n this._layers[layer.id] = layer;\n this._serializedLayers[layer.id] = layer.serialize();\n }\n this.dispatcher.broadcast('setLayers', this._serializeLayers(this._order));\n\n this.light = new Light(this.stylesheet.light);\n\n this.fire(new Event('data', {dataType: 'style'}));\n this.fire(new Event('style.load'));\n }\n\n _loadSprite(url: string) {\n this._spriteRequest = loadSprite(url, this.map._requestManager, (err, images) => {\n this._spriteRequest = null;\n if (err) {\n this.fire(new ErrorEvent(err));\n } else if (images) {\n for (const id in images) {\n this.imageManager.addImage(id, images[id]);\n }\n }\n\n this.imageManager.setLoaded(true);\n this._availableImages = this.imageManager.listImages();\n this.dispatcher.broadcast('setImages', this._availableImages);\n this.fire(new Event('data', {dataType: 'style'}));\n });\n }\n\n _validateLayer(layer: StyleLayer) {\n const sourceCache = this.sourceCaches[layer.source];\n if (!sourceCache) {\n return;\n }\n\n const sourceLayer = layer.sourceLayer;\n if (!sourceLayer) {\n return;\n }\n\n const source = sourceCache.getSource();\n if (source.type === 'geojson' || (source.vectorLayerIds && source.vectorLayerIds.indexOf(sourceLayer) === -1)) {\n this.fire(new ErrorEvent(new Error(\n `Source layer \"${sourceLayer}\" ` +\n `does not exist on source \"${source.id}\" ` +\n `as specified by style layer \"${layer.id}\"`\n )));\n }\n }\n\n loaded() {\n if (!this._loaded)\n return false;\n\n if (Object.keys(this._updatedSources).length)\n return false;\n\n for (const id in this.sourceCaches)\n if (!this.sourceCaches[id].loaded())\n return false;\n\n if (!this.imageManager.isLoaded())\n return false;\n\n return true;\n }\n\n _serializeLayers(ids: Array): Array {\n const serializedLayers = [];\n for (const id of ids) {\n const layer = this._layers[id];\n if (layer.type !== 'custom') {\n serializedLayers.push(layer.serialize());\n }\n }\n return serializedLayers;\n }\n\n hasTransitions() {\n if (this.light && this.light.hasTransition()) {\n return true;\n }\n\n for (const id in this.sourceCaches) {\n if (this.sourceCaches[id].hasTransition()) {\n return true;\n }\n }\n\n for (const id in this._layers) {\n if (this._layers[id].hasTransition()) {\n return true;\n }\n }\n\n return false;\n }\n\n _checkLoaded() {\n if (!this._loaded) {\n throw new Error('Style is not done loading');\n }\n }\n\n /**\n * Apply queued style updates in a batch and recalculate zoom-dependent paint properties.\n * @private\n */\n update(parameters: EvaluationParameters) {\n if (!this._loaded) {\n return;\n }\n\n const changed = this._changed;\n if (this._changed) {\n const updatedIds = Object.keys(this._updatedLayers);\n const removedIds = Object.keys(this._removedLayers);\n\n if (updatedIds.length || removedIds.length) {\n this._updateWorkerLayers(updatedIds, removedIds);\n }\n for (const id in this._updatedSources) {\n const action = this._updatedSources[id];\n assert(action === 'reload' || action === 'clear');\n if (action === 'reload') {\n this._reloadSource(id);\n } else if (action === 'clear') {\n this._clearSource(id);\n }\n }\n\n this._updateTilesForChangedImages();\n\n for (const id in this._updatedPaintProps) {\n this._layers[id].updateTransitions(parameters);\n }\n\n this.light.updateTransitions(parameters);\n\n this._resetUpdates();\n }\n\n const sourcesUsedBefore = {};\n\n for (const sourceId in this.sourceCaches) {\n const sourceCache = this.sourceCaches[sourceId];\n sourcesUsedBefore[sourceId] = sourceCache.used;\n sourceCache.used = false;\n }\n\n for (const layerId of this._order) {\n const layer = this._layers[layerId];\n\n layer.recalculate(parameters, this._availableImages);\n if (!layer.isHidden(parameters.zoom) && layer.source) {\n this.sourceCaches[layer.source].used = true;\n }\n }\n\n for (const sourceId in sourcesUsedBefore) {\n const sourceCache = this.sourceCaches[sourceId];\n if (sourcesUsedBefore[sourceId] !== sourceCache.used) {\n sourceCache.fire(new Event('data', {sourceDataType: 'visibility', dataType:'source', sourceId}));\n }\n }\n\n this.light.recalculate(parameters);\n this.z = parameters.zoom;\n\n if (changed) {\n this.fire(new Event('data', {dataType: 'style'}));\n }\n\n }\n\n /*\n * Apply any queued image changes.\n */\n _updateTilesForChangedImages() {\n const changedImages = Object.keys(this._changedImages);\n if (changedImages.length) {\n for (const name in this.sourceCaches) {\n this.sourceCaches[name].reloadTilesForDependencies(['icons', 'patterns'], changedImages);\n }\n this._changedImages = {};\n }\n }\n\n _updateWorkerLayers(updatedIds: Array, removedIds: Array) {\n this.dispatcher.broadcast('updateLayers', {\n layers: this._serializeLayers(updatedIds),\n removedIds\n });\n }\n\n _resetUpdates() {\n this._changed = false;\n\n this._updatedLayers = {};\n this._removedLayers = {};\n\n this._updatedSources = {};\n this._updatedPaintProps = {};\n\n this._changedImages = {};\n }\n\n /**\n * Update this style's state to match the given style JSON, performing only\n * the necessary mutations.\n *\n * May throw an Error ('Unimplemented: METHOD') if the mapbox-gl-style-spec\n * diff algorithm produces an operation that is not supported.\n *\n * @returns {boolean} true if any changes were made; false otherwise\n * @private\n */\n setState(nextState: StyleSpecification) {\n this._checkLoaded();\n\n if (emitValidationErrors(this, validateStyle(nextState))) return false;\n\n nextState = clone(nextState);\n nextState.layers = deref(nextState.layers);\n\n const changes = diffStyles(this.serialize(), nextState)\n .filter(op => !(op.command in ignoredDiffOperations));\n\n if (changes.length === 0) {\n return false;\n }\n\n const unimplementedOps = changes.filter(op => !(op.command in supportedDiffOperations));\n if (unimplementedOps.length > 0) {\n throw new Error(`Unimplemented: ${unimplementedOps.map(op => op.command).join(', ')}.`);\n }\n\n changes.forEach((op) => {\n if (op.command === 'setTransition') {\n // `transition` is always read directly off of\n // `this.stylesheet`, which we update below\n return;\n }\n (this: any)[op.command].apply(this, op.args);\n });\n\n this.stylesheet = nextState;\n\n return true;\n }\n\n addImage(id: string, image: StyleImage) {\n if (this.getImage(id)) {\n return this.fire(new ErrorEvent(new Error('An image with this name already exists.')));\n }\n this.imageManager.addImage(id, image);\n this._afterImageUpdated(id);\n }\n\n updateImage(id: string, image: StyleImage) {\n this.imageManager.updateImage(id, image);\n }\n\n getImage(id: string): ?StyleImage {\n return this.imageManager.getImage(id);\n }\n\n removeImage(id: string) {\n if (!this.getImage(id)) {\n return this.fire(new ErrorEvent(new Error('No image with this name exists.')));\n }\n this.imageManager.removeImage(id);\n this._afterImageUpdated(id);\n }\n\n _afterImageUpdated(id: string) {\n this._availableImages = this.imageManager.listImages();\n this._changedImages[id] = true;\n this._changed = true;\n this.dispatcher.broadcast('setImages', this._availableImages);\n this.fire(new Event('data', {dataType: 'style'}));\n }\n\n listImages() {\n this._checkLoaded();\n\n return this.imageManager.listImages();\n }\n\n addSource(id: string, source: SourceSpecification, options: StyleSetterOptions = {}) {\n this._checkLoaded();\n\n if (this.sourceCaches[id] !== undefined) {\n throw new Error('There is already a source with this ID');\n }\n\n if (!source.type) {\n throw new Error(`The type property must be defined, but only the following properties were given: ${Object.keys(source).join(', ')}.`);\n }\n\n const builtIns = ['vector', 'raster', 'geojson', 'video', 'image'];\n const shouldValidate = builtIns.indexOf(source.type) >= 0;\n if (shouldValidate && this._validate(validateStyle.source, `sources.${id}`, source, null, options)) return;\n\n if (this.map && this.map._collectResourceTiming) (source: any).collectResourceTiming = true;\n const sourceCache = this.sourceCaches[id] = new SourceCache(id, source, this.dispatcher);\n sourceCache.style = this;\n sourceCache.setEventedParent(this, () => ({\n isSourceLoaded: this.loaded(),\n source: sourceCache.serialize(),\n sourceId: id\n }));\n\n sourceCache.onAdd(this.map);\n this._changed = true;\n }\n\n /**\n * Remove a source from this stylesheet, given its id.\n * @param {string} id id of the source to remove\n * @throws {Error} if no source is found with the given ID\n * @returns {Map} The {@link Map} object.\n */\n removeSource(id: string) {\n this._checkLoaded();\n\n if (this.sourceCaches[id] === undefined) {\n throw new Error('There is no source with this ID');\n }\n for (const layerId in this._layers) {\n if (this._layers[layerId].source === id) {\n return this.fire(new ErrorEvent(new Error(`Source \"${id}\" cannot be removed while layer \"${layerId}\" is using it.`)));\n }\n }\n\n const sourceCache = this.sourceCaches[id];\n delete this.sourceCaches[id];\n delete this._updatedSources[id];\n sourceCache.fire(new Event('data', {sourceDataType: 'metadata', dataType:'source', sourceId: id}));\n sourceCache.setEventedParent(null);\n sourceCache.clearTiles();\n\n if (sourceCache.onRemove) sourceCache.onRemove(this.map);\n this._changed = true;\n }\n\n /**\n * Set the data of a GeoJSON source, given its id.\n * @param {string} id id of the source\n * @param {GeoJSON|string} data GeoJSON source\n */\n setGeoJSONSourceData(id: string, data: GeoJSON | string) {\n this._checkLoaded();\n\n assert(this.sourceCaches[id] !== undefined, 'There is no source with this ID');\n const geojsonSource: GeoJSONSource = (this.sourceCaches[id].getSource(): any);\n assert(geojsonSource.type === 'geojson');\n\n geojsonSource.setData(data);\n this._changed = true;\n }\n\n /**\n * Get a source by id.\n * @param {string} id id of the desired source\n * @returns {Object} source\n */\n getSource(id: string): Object {\n return this.sourceCaches[id] && this.sourceCaches[id].getSource();\n }\n\n /**\n * Add a layer to the map style. The layer will be inserted before the layer with\n * ID `before`, or appended if `before` is omitted.\n * @param {Object | CustomLayerInterface} layerObject The style layer to add.\n * @param {string} [before] ID of an existing layer to insert before\n * @param {Object} options Style setter options.\n * @returns {Map} The {@link Map} object.\n */\n addLayer(layerObject: LayerSpecification | CustomLayerInterface, before?: string, options: StyleSetterOptions = {}) {\n this._checkLoaded();\n\n const id = layerObject.id;\n\n if (this.getLayer(id)) {\n this.fire(new ErrorEvent(new Error(`Layer with id \"${id}\" already exists on this map`)));\n return;\n }\n\n let layer;\n if (layerObject.type === 'custom') {\n\n if (emitValidationErrors(this, validateCustomStyleLayer(layerObject))) return;\n\n layer = createStyleLayer(layerObject);\n\n } else {\n if (typeof layerObject.source === 'object') {\n this.addSource(id, layerObject.source);\n layerObject = clone(layerObject);\n layerObject = (extend(layerObject, {source: id}): any);\n }\n\n // this layer is not in the style.layers array, so we pass an impossible array index\n if (this._validate(validateStyle.layer,\n `layers.${id}`, layerObject, {arrayIndex: -1}, options)) return;\n\n layer = createStyleLayer(layerObject);\n this._validateLayer(layer);\n\n layer.setEventedParent(this, {layer: {id}});\n this._serializedLayers[layer.id] = layer.serialize();\n }\n\n const index = before ? this._order.indexOf(before) : this._order.length;\n if (before && index === -1) {\n this.fire(new ErrorEvent(new Error(`Layer with id \"${before}\" does not exist on this map.`)));\n return;\n }\n\n this._order.splice(index, 0, id);\n this._layerOrderChanged = true;\n\n this._layers[id] = layer;\n\n if (this._removedLayers[id] && layer.source && layer.type !== 'custom') {\n // If, in the current batch, we have already removed this layer\n // and we are now re-adding it with a different `type`, then we\n // need to clear (rather than just reload) the underyling source's\n // tiles. Otherwise, tiles marked 'reloading' will have buckets /\n // buffers that are set up for the _previous_ version of this\n // layer, causing, e.g.:\n // https://github.com/mapbox/mapbox-gl-js/issues/3633\n const removed = this._removedLayers[id];\n delete this._removedLayers[id];\n if (removed.type !== layer.type) {\n this._updatedSources[layer.source] = 'clear';\n } else {\n this._updatedSources[layer.source] = 'reload';\n this.sourceCaches[layer.source].pause();\n }\n }\n this._updateLayer(layer);\n\n if (layer.onAdd) {\n layer.onAdd(this.map);\n }\n }\n\n /**\n * Moves a layer to a different z-position. The layer will be inserted before the layer with\n * ID `before`, or appended if `before` is omitted.\n * @param {string} id ID of the layer to move\n * @param {string} [before] ID of an existing layer to insert before\n */\n moveLayer(id: string, before?: string) {\n this._checkLoaded();\n this._changed = true;\n\n const layer = this._layers[id];\n if (!layer) {\n this.fire(new ErrorEvent(new Error(`The layer '${id}' does not exist in the map's style and cannot be moved.`)));\n return;\n }\n\n if (id === before) {\n return;\n }\n\n const index = this._order.indexOf(id);\n this._order.splice(index, 1);\n\n const newIndex = before ? this._order.indexOf(before) : this._order.length;\n if (before && newIndex === -1) {\n this.fire(new ErrorEvent(new Error(`Layer with id \"${before}\" does not exist on this map.`)));\n return;\n }\n this._order.splice(newIndex, 0, id);\n\n this._layerOrderChanged = true;\n }\n\n /**\n * Remove the layer with the given id from the style.\n *\n * If no such layer exists, an `error` event is fired.\n *\n * @param {string} id id of the layer to remove\n * @fires error\n */\n removeLayer(id: string) {\n this._checkLoaded();\n\n const layer = this._layers[id];\n if (!layer) {\n this.fire(new ErrorEvent(new Error(`The layer '${id}' does not exist in the map's style and cannot be removed.`)));\n return;\n }\n\n layer.setEventedParent(null);\n\n const index = this._order.indexOf(id);\n this._order.splice(index, 1);\n\n this._layerOrderChanged = true;\n this._changed = true;\n this._removedLayers[id] = layer;\n delete this._layers[id];\n delete this._serializedLayers[id];\n delete this._updatedLayers[id];\n delete this._updatedPaintProps[id];\n\n if (layer.onRemove) {\n layer.onRemove(this.map);\n }\n }\n\n /**\n * Return the style layer object with the given `id`.\n *\n * @param {string} id - id of the desired layer\n * @returns {?Object} a layer, if one with the given `id` exists\n */\n getLayer(id: string): Object {\n return this._layers[id];\n }\n\n /**\n * checks if a specific layer is present within the style.\n *\n * @param {string} id - id of the desired layer\n * @returns {boolean} a boolean specifying if the given layer is present\n */\n hasLayer(id: string): boolean {\n return id in this._layers;\n }\n\n setLayerZoomRange(layerId: string, minzoom: ?number, maxzoom: ?number) {\n this._checkLoaded();\n\n const layer = this.getLayer(layerId);\n if (!layer) {\n this.fire(new ErrorEvent(new Error(`The layer '${layerId}' does not exist in the map's style and cannot have zoom extent.`)));\n return;\n }\n\n if (layer.minzoom === minzoom && layer.maxzoom === maxzoom) return;\n\n if (minzoom != null) {\n layer.minzoom = minzoom;\n }\n if (maxzoom != null) {\n layer.maxzoom = maxzoom;\n }\n this._updateLayer(layer);\n }\n\n setFilter(layerId: string, filter: ?FilterSpecification, options: StyleSetterOptions = {}) {\n this._checkLoaded();\n\n const layer = this.getLayer(layerId);\n if (!layer) {\n this.fire(new ErrorEvent(new Error(`The layer '${layerId}' does not exist in the map's style and cannot be filtered.`)));\n return;\n }\n\n if (deepEqual(layer.filter, filter)) {\n return;\n }\n\n if (filter === null || filter === undefined) {\n layer.filter = undefined;\n this._updateLayer(layer);\n return;\n }\n\n if (this._validate(validateStyle.filter, `layers.${layer.id}.filter`, filter, null, options)) {\n return;\n }\n\n layer.filter = clone(filter);\n this._updateLayer(layer);\n }\n\n /**\n * Get a layer's filter object\n * @param {string} layer the layer to inspect\n * @returns {*} the layer's filter, if any\n */\n getFilter(layer: string) {\n return clone(this.getLayer(layer).filter);\n }\n\n setLayoutProperty(layerId: string, name: string, value: any, options: StyleSetterOptions = {}) {\n this._checkLoaded();\n\n const layer = this.getLayer(layerId);\n if (!layer) {\n this.fire(new ErrorEvent(new Error(`The layer '${layerId}' does not exist in the map's style and cannot be styled.`)));\n return;\n }\n\n if (deepEqual(layer.getLayoutProperty(name), value)) return;\n\n layer.setLayoutProperty(name, value, options);\n this._updateLayer(layer);\n }\n\n /**\n * Get a layout property's value from a given layer\n * @param {string} layerId the layer to inspect\n * @param {string} name the name of the layout property\n * @returns {*} the property value\n */\n getLayoutProperty(layerId: string, name: string) {\n const layer = this.getLayer(layerId);\n if (!layer) {\n this.fire(new ErrorEvent(new Error(`The layer '${layerId}' does not exist in the map's style.`)));\n return;\n }\n\n return layer.getLayoutProperty(name);\n }\n\n setPaintProperty(layerId: string, name: string, value: any, options: StyleSetterOptions = {}) {\n this._checkLoaded();\n\n const layer = this.getLayer(layerId);\n if (!layer) {\n this.fire(new ErrorEvent(new Error(`The layer '${layerId}' does not exist in the map's style and cannot be styled.`)));\n return;\n }\n\n if (deepEqual(layer.getPaintProperty(name), value)) return;\n\n const requiresRelayout = layer.setPaintProperty(name, value, options);\n if (requiresRelayout) {\n this._updateLayer(layer);\n }\n\n this._changed = true;\n this._updatedPaintProps[layerId] = true;\n }\n\n getPaintProperty(layer: string, name: string) {\n return this.getLayer(layer).getPaintProperty(name);\n }\n\n setFeatureState(target: { source: string; sourceLayer?: string; id: string | number; }, state: Object) {\n this._checkLoaded();\n const sourceId = target.source;\n const sourceLayer = target.sourceLayer;\n const sourceCache = this.sourceCaches[sourceId];\n\n if (sourceCache === undefined) {\n this.fire(new ErrorEvent(new Error(`The source '${sourceId}' does not exist in the map's style.`)));\n return;\n }\n const sourceType = sourceCache.getSource().type;\n if (sourceType === 'geojson' && sourceLayer) {\n this.fire(new ErrorEvent(new Error(`GeoJSON sources cannot have a sourceLayer parameter.`)));\n return;\n }\n if (sourceType === 'vector' && !sourceLayer) {\n this.fire(new ErrorEvent(new Error(`The sourceLayer parameter must be provided for vector source types.`)));\n return;\n }\n if (target.id === undefined) {\n this.fire(new ErrorEvent(new Error(`The feature id parameter must be provided.`)));\n }\n\n sourceCache.setFeatureState(sourceLayer, target.id, state);\n }\n\n removeFeatureState(target: { source: string; sourceLayer?: string; id?: string | number; }, key?: string) {\n this._checkLoaded();\n const sourceId = target.source;\n const sourceCache = this.sourceCaches[sourceId];\n\n if (sourceCache === undefined) {\n this.fire(new ErrorEvent(new Error(`The source '${sourceId}' does not exist in the map's style.`)));\n return;\n }\n\n const sourceType = sourceCache.getSource().type;\n const sourceLayer = sourceType === 'vector' ? target.sourceLayer : undefined;\n\n if (sourceType === 'vector' && !sourceLayer) {\n this.fire(new ErrorEvent(new Error(`The sourceLayer parameter must be provided for vector source types.`)));\n return;\n }\n\n if (key && (typeof target.id !== 'string' && typeof target.id !== 'number')) {\n this.fire(new ErrorEvent(new Error(`A feature id is required to remove its specific state property.`)));\n return;\n }\n\n sourceCache.removeFeatureState(sourceLayer, target.id, key);\n }\n\n getFeatureState(target: { source: string; sourceLayer?: string; id: string | number; }) {\n this._checkLoaded();\n const sourceId = target.source;\n const sourceLayer = target.sourceLayer;\n const sourceCache = this.sourceCaches[sourceId];\n\n if (sourceCache === undefined) {\n this.fire(new ErrorEvent(new Error(`The source '${sourceId}' does not exist in the map's style.`)));\n return;\n }\n const sourceType = sourceCache.getSource().type;\n if (sourceType === 'vector' && !sourceLayer) {\n this.fire(new ErrorEvent(new Error(`The sourceLayer parameter must be provided for vector source types.`)));\n return;\n }\n if (target.id === undefined) {\n this.fire(new ErrorEvent(new Error(`The feature id parameter must be provided.`)));\n }\n\n return sourceCache.getFeatureState(sourceLayer, target.id);\n }\n\n getTransition() {\n return extend({duration: 300, delay: 0}, this.stylesheet && this.stylesheet.transition);\n }\n\n serialize() {\n return filterObject({\n version: this.stylesheet.version,\n name: this.stylesheet.name,\n metadata: this.stylesheet.metadata,\n light: this.stylesheet.light,\n center: this.stylesheet.center,\n zoom: this.stylesheet.zoom,\n bearing: this.stylesheet.bearing,\n pitch: this.stylesheet.pitch,\n sprite: this.stylesheet.sprite,\n glyphs: this.stylesheet.glyphs,\n transition: this.stylesheet.transition,\n sources: mapObject(this.sourceCaches, (source) => source.serialize()),\n layers: this._serializeLayers(this._order)\n }, (value) => { return value !== undefined; });\n }\n\n _updateLayer(layer: StyleLayer) {\n this._updatedLayers[layer.id] = true;\n if (layer.source && !this._updatedSources[layer.source] &&\n //Skip for raster layers (https://github.com/mapbox/mapbox-gl-js/issues/7865)\n this.sourceCaches[layer.source].getSource().type !== 'raster') {\n this._updatedSources[layer.source] = 'reload';\n this.sourceCaches[layer.source].pause();\n }\n this._changed = true;\n }\n\n _flattenAndSortRenderedFeatures(sourceResults: Array) {\n // Feature order is complicated.\n // The order between features in two 2D layers is always determined by layer order.\n // The order between features in two 3D layers is always determined by depth.\n // The order between a feature in a 2D layer and a 3D layer is tricky:\n // Most often layer order determines the feature order in this case. If\n // a line layer is above a extrusion layer the line feature will be rendered\n // above the extrusion. If the line layer is below the extrusion layer,\n // it will be rendered below it.\n //\n // There is a weird case though.\n // You have layers in this order: extrusion_layer_a, line_layer, extrusion_layer_b\n // Each layer has a feature that overlaps the other features.\n // The feature in extrusion_layer_a is closer than the feature in extrusion_layer_b so it is rendered above.\n // The feature in line_layer is rendered above extrusion_layer_a.\n // This means that that the line_layer feature is above the extrusion_layer_b feature despite\n // it being in an earlier layer.\n\n const isLayer3D = layerId => this._layers[layerId].type === 'fill-extrusion';\n\n const layerIndex = {};\n const features3D = [];\n for (let l = this._order.length - 1; l >= 0; l--) {\n const layerId = this._order[l];\n if (isLayer3D(layerId)) {\n layerIndex[layerId] = l;\n for (const sourceResult of sourceResults) {\n const layerFeatures = sourceResult[layerId];\n if (layerFeatures) {\n for (const featureWrapper of layerFeatures) {\n features3D.push(featureWrapper);\n }\n }\n }\n }\n }\n\n features3D.sort((a, b) => {\n return b.intersectionZ - a.intersectionZ;\n });\n\n const features = [];\n for (let l = this._order.length - 1; l >= 0; l--) {\n const layerId = this._order[l];\n\n if (isLayer3D(layerId)) {\n // add all 3D features that are in or above the current layer\n for (let i = features3D.length - 1; i >= 0; i--) {\n const topmost3D = features3D[i].feature;\n if (layerIndex[topmost3D.layer.id] < l) break;\n features.push(topmost3D);\n features3D.pop();\n }\n } else {\n for (const sourceResult of sourceResults) {\n const layerFeatures = sourceResult[layerId];\n if (layerFeatures) {\n for (const featureWrapper of layerFeatures) {\n features.push(featureWrapper.feature);\n }\n }\n }\n }\n }\n\n return features;\n }\n\n queryRenderedFeatures(queryGeometry: any, params: any, transform: Transform) {\n if (params && params.filter) {\n this._validate(validateStyle.filter, 'queryRenderedFeatures.filter', params.filter, null, params);\n }\n\n const includedSources = {};\n if (params && params.layers) {\n if (!Array.isArray(params.layers)) {\n this.fire(new ErrorEvent(new Error('parameters.layers must be an Array.')));\n return [];\n }\n for (const layerId of params.layers) {\n const layer = this._layers[layerId];\n if (!layer) {\n // this layer is not in the style.layers array\n this.fire(new ErrorEvent(new Error(`The layer '${layerId}' does not exist in the map's style and cannot be queried for features.`)));\n return [];\n }\n includedSources[layer.source] = true;\n }\n }\n\n const sourceResults = [];\n\n params.availableImages = this._availableImages;\n\n for (const id in this.sourceCaches) {\n if (params.layers && !includedSources[id]) continue;\n sourceResults.push(\n queryRenderedFeatures(\n this.sourceCaches[id],\n this._layers,\n this._serializedLayers,\n queryGeometry,\n params,\n transform)\n );\n }\n\n if (this.placement) {\n // If a placement has run, query against its CollisionIndex\n // for symbol results, and treat it as an extra source to merge\n sourceResults.push(\n queryRenderedSymbols(\n this._layers,\n this._serializedLayers,\n this.sourceCaches,\n queryGeometry,\n params,\n this.placement.collisionIndex,\n this.placement.retainedQueryData)\n );\n }\n\n return this._flattenAndSortRenderedFeatures(sourceResults);\n }\n\n querySourceFeatures(sourceID: string, params: ?{sourceLayer: ?string, filter: ?Array, validate?: boolean}) {\n if (params && params.filter) {\n this._validate(validateStyle.filter, 'querySourceFeatures.filter', params.filter, null, params);\n }\n const sourceCache = this.sourceCaches[sourceID];\n return sourceCache ? querySourceFeatures(sourceCache, params) : [];\n }\n\n addSourceType(name: string, SourceType: SourceClass, callback: Callback) {\n if (Style.getSourceType(name)) {\n return callback(new Error(`A source type called \"${name}\" already exists.`));\n }\n\n Style.setSourceType(name, SourceType);\n\n if (!SourceType.workerSourceURL) {\n return callback(null, null);\n }\n\n this.dispatcher.broadcast('loadWorkerSource', {\n name,\n url: SourceType.workerSourceURL\n }, callback);\n }\n\n getLight() {\n return this.light.getLight();\n }\n\n setLight(lightOptions: LightSpecification, options: StyleSetterOptions = {}) {\n this._checkLoaded();\n\n const light = this.light.getLight();\n let _update = false;\n for (const key in lightOptions) {\n if (!deepEqual(lightOptions[key], light[key])) {\n _update = true;\n break;\n }\n }\n if (!_update) return;\n\n const parameters = {\n now: browser.now(),\n transition: extend({\n duration: 300,\n delay: 0\n }, this.stylesheet.transition)\n };\n\n this.light.setLight(lightOptions, options);\n this.light.updateTransitions(parameters);\n }\n\n _validate(validate: Validator, key: string, value: any, props: any, options: { validate?: boolean } = {}) {\n if (options && options.validate === false) {\n return false;\n }\n return emitValidationErrors(this, validate.call(validateStyle, extend({\n key,\n style: this.serialize(),\n value,\n styleSpec\n }, props)));\n }\n\n _remove() {\n if (this._request) {\n this._request.cancel();\n this._request = null;\n }\n if (this._spriteRequest) {\n this._spriteRequest.cancel();\n this._spriteRequest = null;\n }\n rtlTextPluginEvented.off('pluginStateChange', this._rtlTextPluginCallback);\n for (const layerId in this._layers) {\n const layer: StyleLayer = this._layers[layerId];\n layer.setEventedParent(null);\n }\n for (const id in this.sourceCaches) {\n this.sourceCaches[id].clearTiles();\n this.sourceCaches[id].setEventedParent(null);\n }\n this.imageManager.setEventedParent(null);\n this.setEventedParent(null);\n this.dispatcher.remove();\n }\n\n _clearSource(id: string) {\n this.sourceCaches[id].clearTiles();\n }\n\n _reloadSource(id: string) {\n this.sourceCaches[id].resume();\n this.sourceCaches[id].reload();\n }\n\n _updateSources(transform: Transform) {\n for (const id in this.sourceCaches) {\n this.sourceCaches[id].update(transform);\n }\n }\n\n _generateCollisionBoxes() {\n for (const id in this.sourceCaches) {\n this._reloadSource(id);\n }\n }\n\n _updatePlacement(transform: Transform, showCollisionBoxes: boolean, fadeDuration: number, crossSourceCollisions: boolean, forceFullPlacement: boolean = false) {\n let symbolBucketsChanged = false;\n let placementCommitted = false;\n\n const layerTiles = {};\n\n for (const layerID of this._order) {\n const styleLayer = this._layers[layerID];\n if (styleLayer.type !== 'symbol') continue;\n\n if (!layerTiles[styleLayer.source]) {\n const sourceCache = this.sourceCaches[styleLayer.source];\n layerTiles[styleLayer.source] = sourceCache.getRenderableIds(true)\n .map((id) => sourceCache.getTileByID(id))\n .sort((a, b) => (b.tileID.overscaledZ - a.tileID.overscaledZ) || (a.tileID.isLessThan(b.tileID) ? -1 : 1));\n }\n\n const layerBucketsChanged = this.crossTileSymbolIndex.addLayer(styleLayer, layerTiles[styleLayer.source], transform.center.lng);\n symbolBucketsChanged = symbolBucketsChanged || layerBucketsChanged;\n }\n this.crossTileSymbolIndex.pruneUnusedLayers(this._order);\n\n // Anything that changes our \"in progress\" layer and tile indices requires us\n // to start over. When we start over, we do a full placement instead of incremental\n // to prevent starvation.\n // We need to restart placement to keep layer indices in sync.\n // Also force full placement when fadeDuration === 0 to ensure that newly loaded\n // tiles will fully display symbols in their first frame\n forceFullPlacement = forceFullPlacement || this._layerOrderChanged || fadeDuration === 0;\n\n if (forceFullPlacement || !this.pauseablePlacement || (this.pauseablePlacement.isDone() && !this.placement.stillRecent(browser.now(), transform.zoom))) {\n this.pauseablePlacement = new PauseablePlacement(transform, this._order, forceFullPlacement, showCollisionBoxes, fadeDuration, crossSourceCollisions, this.placement);\n this._layerOrderChanged = false;\n }\n\n if (this.pauseablePlacement.isDone()) {\n // the last placement finished running, but the next one hasn’t\n // started yet because of the `stillRecent` check immediately\n // above, so mark it stale to ensure that we request another\n // render frame\n this.placement.setStale();\n } else {\n this.pauseablePlacement.continuePlacement(this._order, this._layers, layerTiles);\n\n if (this.pauseablePlacement.isDone()) {\n this.placement = this.pauseablePlacement.commit(browser.now());\n placementCommitted = true;\n }\n\n if (symbolBucketsChanged) {\n // since the placement gets split over multiple frames it is possible\n // these buckets were processed before they were changed and so the\n // placement is already stale while it is in progress\n this.pauseablePlacement.placement.setStale();\n }\n }\n\n if (placementCommitted || symbolBucketsChanged) {\n for (const layerID of this._order) {\n const styleLayer = this._layers[layerID];\n if (styleLayer.type !== 'symbol') continue;\n this.placement.updateLayerOpacities(styleLayer, layerTiles[styleLayer.source]);\n }\n }\n\n // needsRender is false when we have just finished a placement that didn't change the visibility of any symbols\n const needsRerender = !this.pauseablePlacement.isDone() || this.placement.hasTransitions(browser.now());\n return needsRerender;\n }\n\n _releaseSymbolFadeTiles() {\n for (const id in this.sourceCaches) {\n this.sourceCaches[id].releaseSymbolFadeTiles();\n }\n }\n\n // Callbacks from web workers\n\n getImages(mapId: string, params: {icons: Array, source: string, tileID: OverscaledTileID, type: string}, callback: Callback<{[_: string]: StyleImage}>) {\n\n this.imageManager.getImages(params.icons, callback);\n\n // Apply queued image changes before setting the tile's dependencies so that the tile\n // is not reloaded unecessarily. Without this forced update the reload could happen in cases\n // like this one:\n // - icons contains \"my-image\"\n // - imageManager.getImages(...) triggers `onstyleimagemissing`\n // - the user adds \"my-image\" within the callback\n // - addImage adds \"my-image\" to this._changedImages\n // - the next frame triggers a reload of this tile even though it already has the latest version\n this._updateTilesForChangedImages();\n\n const sourceCache = this.sourceCaches[params.source];\n if (sourceCache) {\n sourceCache.setDependencies(params.tileID.key, params.type, params.icons);\n }\n }\n\n getGlyphs(mapId: string, params: {stacks: {[_: string]: Array}}, callback: Callback<{[_: string]: {[_: number]: ?StyleGlyph}}>) {\n this.glyphManager.getGlyphs(params.stacks, callback);\n }\n\n getResource(mapId: string, params: RequestParameters, callback: ResponseCallback): Cancelable {\n return makeRequest(params, callback);\n }\n}\n\nStyle.getSourceType = getSourceType;\nStyle.setSourceType = setSourceType;\nStyle.registerForPluginStateChange = registerForPluginStateChange;\n\nexport default Style;\n", "import latest from './reference/latest';\n\nexport default function emptyStyle() {\n const style = {};\n\n const version = latest['$version'];\n for (const styleKey in latest['$root']) {\n const spec = latest['$root'][styleKey];\n\n if (spec.required) {\n let value = null;\n if (styleKey === 'version') {\n value = version;\n } else {\n if (spec.type === 'array') {\n value = [];\n } else {\n value = {};\n }\n }\n\n if (value != null) {\n style[styleKey] = value;\n }\n }\n }\n\n return style;\n}\n", "// @flow\n\nimport {getJSON, getImage, ResourceType} from '../util/ajax';\n\nimport browser from '../util/browser';\nimport {RGBAImage} from '../util/image';\n\nimport type {StyleImage} from './style_image';\nimport type {RequestManager} from '../util/mapbox';\nimport type {Callback} from '../types/callback';\nimport type {Cancelable} from '../types/cancelable';\n\nexport default function(baseURL: string,\n requestManager: RequestManager,\n callback: Callback<{[_: string]: StyleImage}>): Cancelable {\n let json: any, image, error;\n const format = browser.devicePixelRatio > 1 ? '@2x' : '';\n\n let jsonRequest = getJSON(requestManager.transformRequest(requestManager.normalizeSpriteURL(baseURL, format, '.json'), ResourceType.SpriteJSON), (err: ?Error, data: ?Object) => {\n jsonRequest = null;\n if (!error) {\n error = err;\n json = data;\n maybeComplete();\n }\n });\n\n let imageRequest = getImage(requestManager.transformRequest(requestManager.normalizeSpriteURL(baseURL, format, '.png'), ResourceType.SpriteImage), (err, img) => {\n imageRequest = null;\n if (!error) {\n error = err;\n image = img;\n maybeComplete();\n }\n });\n\n function maybeComplete() {\n if (error) {\n callback(error);\n } else if (json && image) {\n const imageData = browser.getImageData(image);\n const result = {};\n\n for (const id in json) {\n const {width, height, x, y, sdf, pixelRatio, stretchX, stretchY, content} = json[id];\n const data = new RGBAImage({width, height});\n RGBAImage.copy(imageData, data, {x, y}, {x: 0, y: 0}, {width, height});\n result[id] = {data, pixelRatio, sdf, stretchX, stretchY, content};\n }\n\n callback(null, result);\n }\n }\n\n return {\n cancel() {\n if (jsonRequest) {\n jsonRequest.cancel();\n jsonRequest = null;\n }\n if (imageRequest) {\n imageRequest.cancel();\n imageRequest = null;\n }\n }\n };\n}\n", "// @flow\nimport {createLayout} from '../util/struct_array';\n\nexport default createLayout([\n {name: 'a_pos', type: 'Int16', components: 2}\n]);\n", "\n// Disable Flow annotations here because Flow doesn't support importing GLSL files\n/* eslint-disable flowtype/require-valid-file-annotation */\n\nimport preludeFrag from './_prelude.fragment.glsl';\nimport preludeVert from './_prelude.vertex.glsl';\nimport backgroundFrag from './background.fragment.glsl';\nimport backgroundVert from './background.vertex.glsl';\nimport backgroundPatternFrag from './background_pattern.fragment.glsl';\nimport backgroundPatternVert from './background_pattern.vertex.glsl';\nimport circleFrag from './circle.fragment.glsl';\nimport circleVert from './circle.vertex.glsl';\nimport clippingMaskFrag from './clipping_mask.fragment.glsl';\nimport clippingMaskVert from './clipping_mask.vertex.glsl';\nimport heatmapFrag from './heatmap.fragment.glsl';\nimport heatmapVert from './heatmap.vertex.glsl';\nimport heatmapTextureFrag from './heatmap_texture.fragment.glsl';\nimport heatmapTextureVert from './heatmap_texture.vertex.glsl';\nimport collisionBoxFrag from './collision_box.fragment.glsl';\nimport collisionBoxVert from './collision_box.vertex.glsl';\nimport collisionCircleFrag from './collision_circle.fragment.glsl';\nimport collisionCircleVert from './collision_circle.vertex.glsl';\nimport debugFrag from './debug.fragment.glsl';\nimport debugVert from './debug.vertex.glsl';\nimport fillFrag from './fill.fragment.glsl';\nimport fillVert from './fill.vertex.glsl';\nimport fillOutlineFrag from './fill_outline.fragment.glsl';\nimport fillOutlineVert from './fill_outline.vertex.glsl';\nimport fillOutlinePatternFrag from './fill_outline_pattern.fragment.glsl';\nimport fillOutlinePatternVert from './fill_outline_pattern.vertex.glsl';\nimport fillPatternFrag from './fill_pattern.fragment.glsl';\nimport fillPatternVert from './fill_pattern.vertex.glsl';\nimport fillExtrusionFrag from './fill_extrusion.fragment.glsl';\nimport fillExtrusionVert from './fill_extrusion.vertex.glsl';\nimport fillExtrusionPatternFrag from './fill_extrusion_pattern.fragment.glsl';\nimport fillExtrusionPatternVert from './fill_extrusion_pattern.vertex.glsl';\nimport hillshadePrepareFrag from './hillshade_prepare.fragment.glsl';\nimport hillshadePrepareVert from './hillshade_prepare.vertex.glsl';\nimport hillshadeFrag from './hillshade.fragment.glsl';\nimport hillshadeVert from './hillshade.vertex.glsl';\nimport lineFrag from './line.fragment.glsl';\nimport lineVert from './line.vertex.glsl';\nimport lineGradientFrag from './line_gradient.fragment.glsl';\nimport lineGradientVert from './line_gradient.vertex.glsl';\nimport linePatternFrag from './line_pattern.fragment.glsl';\nimport linePatternVert from './line_pattern.vertex.glsl';\nimport lineSDFFrag from './line_sdf.fragment.glsl';\nimport lineSDFVert from './line_sdf.vertex.glsl';\nimport rasterFrag from './raster.fragment.glsl';\nimport rasterVert from './raster.vertex.glsl';\nimport symbolIconFrag from './symbol_icon.fragment.glsl';\nimport symbolIconVert from './symbol_icon.vertex.glsl';\nimport symbolSDFFrag from './symbol_sdf.fragment.glsl';\nimport symbolSDFVert from './symbol_sdf.vertex.glsl';\nimport symbolTextAndIconFrag from './symbol_text_and_icon.fragment.glsl';\nimport symbolTextAndIconVert from './symbol_text_and_icon.vertex.glsl';\n\nexport const prelude = compile(preludeFrag, preludeVert);\nexport const background = compile(backgroundFrag, backgroundVert);\nexport const backgroundPattern = compile(backgroundPatternFrag, backgroundPatternVert);\nexport const circle = compile(circleFrag, circleVert);\nexport const clippingMask = compile(clippingMaskFrag, clippingMaskVert);\nexport const heatmap = compile(heatmapFrag, heatmapVert);\nexport const heatmapTexture = compile(heatmapTextureFrag, heatmapTextureVert);\nexport const collisionBox = compile(collisionBoxFrag, collisionBoxVert);\nexport const collisionCircle = compile(collisionCircleFrag, collisionCircleVert);\nexport const debug = compile(debugFrag, debugVert);\nexport const fill = compile(fillFrag, fillVert);\nexport const fillOutline = compile(fillOutlineFrag, fillOutlineVert);\nexport const fillOutlinePattern = compile(fillOutlinePatternFrag, fillOutlinePatternVert);\nexport const fillPattern = compile(fillPatternFrag, fillPatternVert);\nexport const fillExtrusion = compile(fillExtrusionFrag, fillExtrusionVert);\nexport const fillExtrusionPattern = compile(fillExtrusionPatternFrag, fillExtrusionPatternVert);\nexport const hillshadePrepare = compile(hillshadePrepareFrag, hillshadePrepareVert);\nexport const hillshade = compile(hillshadeFrag, hillshadeVert);\nexport const line = compile(lineFrag, lineVert);\nexport const lineGradient = compile(lineGradientFrag, lineGradientVert);\nexport const linePattern = compile(linePatternFrag, linePatternVert);\nexport const lineSDF = compile(lineSDFFrag, lineSDFVert);\nexport const raster = compile(rasterFrag, rasterVert);\nexport const symbolIcon = compile(symbolIconFrag, symbolIconVert);\nexport const symbolSDF = compile(symbolSDFFrag, symbolSDFVert);\nexport const symbolTextAndIcon = compile(symbolTextAndIconFrag, symbolTextAndIconVert);\n\n// Expand #pragmas to #ifdefs.\n\nfunction compile(fragmentSource, vertexSource) {\n const re = /#pragma mapbox: ([\\w]+) ([\\w]+) ([\\w]+) ([\\w]+)/g;\n\n const staticAttributes = vertexSource.match(/attribute ([\\w]+) ([\\w]+)/g);\n const fragmentUniforms = fragmentSource.match(/uniform ([\\w]+) ([\\w]+)([\\s]*)([\\w]*)/g);\n const vertexUniforms = vertexSource.match(/uniform ([\\w]+) ([\\w]+)([\\s]*)([\\w]*)/g);\n const staticUniforms = vertexUniforms ? vertexUniforms.concat(fragmentUniforms) : fragmentUniforms;\n\n const fragmentPragmas = {};\n\n fragmentSource = fragmentSource.replace(re, (match, operation, precision, type, name) => {\n fragmentPragmas[name] = true;\n if (operation === 'define') {\n return `\n#ifndef HAS_UNIFORM_u_${name}\nvarying ${precision} ${type} ${name};\n#else\nuniform ${precision} ${type} u_${name};\n#endif\n`;\n } else /* if (operation === 'initialize') */ {\n return `\n#ifdef HAS_UNIFORM_u_${name}\n ${precision} ${type} ${name} = u_${name};\n#endif\n`;\n }\n });\n\n vertexSource = vertexSource.replace(re, (match, operation, precision, type, name) => {\n const attrType = type === 'float' ? 'vec2' : 'vec4';\n const unpackType = name.match(/color/) ? 'color' : attrType;\n\n if (fragmentPragmas[name]) {\n if (operation === 'define') {\n return `\n#ifndef HAS_UNIFORM_u_${name}\nuniform lowp float u_${name}_t;\nattribute ${precision} ${attrType} a_${name};\nvarying ${precision} ${type} ${name};\n#else\nuniform ${precision} ${type} u_${name};\n#endif\n`;\n } else /* if (operation === 'initialize') */ {\n if (unpackType === 'vec4') {\n // vec4 attributes are only used for cross-faded properties, and are not packed\n return `\n#ifndef HAS_UNIFORM_u_${name}\n ${name} = a_${name};\n#else\n ${precision} ${type} ${name} = u_${name};\n#endif\n`;\n } else {\n return `\n#ifndef HAS_UNIFORM_u_${name}\n ${name} = unpack_mix_${unpackType}(a_${name}, u_${name}_t);\n#else\n ${precision} ${type} ${name} = u_${name};\n#endif\n`;\n }\n }\n } else {\n if (operation === 'define') {\n return `\n#ifndef HAS_UNIFORM_u_${name}\nuniform lowp float u_${name}_t;\nattribute ${precision} ${attrType} a_${name};\n#else\nuniform ${precision} ${type} u_${name};\n#endif\n`;\n } else /* if (operation === 'initialize') */ {\n if (unpackType === 'vec4') {\n // vec4 attributes are only used for cross-faded properties, and are not packed\n return `\n#ifndef HAS_UNIFORM_u_${name}\n ${precision} ${type} ${name} = a_${name};\n#else\n ${precision} ${type} ${name} = u_${name};\n#endif\n`;\n } else /* */{\n return `\n#ifndef HAS_UNIFORM_u_${name}\n ${precision} ${type} ${name} = unpack_mix_${unpackType}(a_${name}, u_${name}_t);\n#else\n ${precision} ${type} ${name} = u_${name};\n#endif\n`;\n }\n }\n }\n });\n\n return {fragmentSource, vertexSource, staticAttributes, staticUniforms};\n}\n", "// @flow\n\nimport assert from 'assert';\n\nimport type Program from './program';\nimport type VertexBuffer from '../gl/vertex_buffer';\nimport type IndexBuffer from '../gl/index_buffer';\nimport type Context from '../gl/context';\n\nclass VertexArrayObject {\n context: Context;\n boundProgram: ?Program<*>;\n boundLayoutVertexBuffer: ?VertexBuffer;\n boundPaintVertexBuffers: Array;\n boundIndexBuffer: ?IndexBuffer;\n boundVertexOffset: ?number;\n boundDynamicVertexBuffer: ?VertexBuffer;\n boundDynamicVertexBuffer2: ?VertexBuffer;\n vao: any;\n\n constructor() {\n this.boundProgram = null;\n this.boundLayoutVertexBuffer = null;\n this.boundPaintVertexBuffers = [];\n this.boundIndexBuffer = null;\n this.boundVertexOffset = null;\n this.boundDynamicVertexBuffer = null;\n this.vao = null;\n }\n\n bind(context: Context,\n program: Program<*>,\n layoutVertexBuffer: VertexBuffer,\n paintVertexBuffers: Array,\n indexBuffer: ?IndexBuffer,\n vertexOffset: ?number,\n dynamicVertexBuffer: ?VertexBuffer,\n dynamicVertexBuffer2: ?VertexBuffer) {\n\n this.context = context;\n\n let paintBuffersDiffer = this.boundPaintVertexBuffers.length !== paintVertexBuffers.length;\n for (let i = 0; !paintBuffersDiffer && i < paintVertexBuffers.length; i++) {\n if (this.boundPaintVertexBuffers[i] !== paintVertexBuffers[i]) {\n paintBuffersDiffer = true;\n }\n }\n\n const isFreshBindRequired = (\n !this.vao ||\n this.boundProgram !== program ||\n this.boundLayoutVertexBuffer !== layoutVertexBuffer ||\n paintBuffersDiffer ||\n this.boundIndexBuffer !== indexBuffer ||\n this.boundVertexOffset !== vertexOffset ||\n this.boundDynamicVertexBuffer !== dynamicVertexBuffer ||\n this.boundDynamicVertexBuffer2 !== dynamicVertexBuffer2\n );\n\n if (!context.extVertexArrayObject || isFreshBindRequired) {\n this.freshBind(program, layoutVertexBuffer, paintVertexBuffers, indexBuffer, vertexOffset, dynamicVertexBuffer, dynamicVertexBuffer2);\n } else {\n context.bindVertexArrayOES.set(this.vao);\n\n if (dynamicVertexBuffer) {\n // The buffer may have been updated. Rebind to upload data.\n dynamicVertexBuffer.bind();\n }\n\n if (indexBuffer && indexBuffer.dynamicDraw) {\n indexBuffer.bind();\n }\n\n if (dynamicVertexBuffer2) {\n dynamicVertexBuffer2.bind();\n }\n }\n }\n\n freshBind(program: Program<*>,\n layoutVertexBuffer: VertexBuffer,\n paintVertexBuffers: Array,\n indexBuffer: ?IndexBuffer,\n vertexOffset: ?number,\n dynamicVertexBuffer: ?VertexBuffer,\n dynamicVertexBuffer2: ?VertexBuffer) {\n let numPrevAttributes;\n const numNextAttributes = program.numAttributes;\n\n const context = this.context;\n const gl = context.gl;\n\n if (context.extVertexArrayObject) {\n if (this.vao) this.destroy();\n this.vao = context.extVertexArrayObject.createVertexArrayOES();\n context.bindVertexArrayOES.set(this.vao);\n numPrevAttributes = 0;\n\n // store the arguments so that we can verify them when the vao is bound again\n this.boundProgram = program;\n this.boundLayoutVertexBuffer = layoutVertexBuffer;\n this.boundPaintVertexBuffers = paintVertexBuffers;\n this.boundIndexBuffer = indexBuffer;\n this.boundVertexOffset = vertexOffset;\n this.boundDynamicVertexBuffer = dynamicVertexBuffer;\n this.boundDynamicVertexBuffer2 = dynamicVertexBuffer2;\n\n } else {\n numPrevAttributes = context.currentNumAttributes || 0;\n\n // Disable all attributes from the previous program that aren't used in\n // the new program. Note: attribute indices are *not* program specific!\n for (let i = numNextAttributes; i < numPrevAttributes; i++) {\n // WebGL breaks if you disable attribute 0.\n // http://stackoverflow.com/questions/20305231\n assert(i !== 0);\n gl.disableVertexAttribArray(i);\n }\n }\n\n layoutVertexBuffer.enableAttributes(gl, program);\n for (const vertexBuffer of paintVertexBuffers) {\n vertexBuffer.enableAttributes(gl, program);\n }\n\n if (dynamicVertexBuffer) {\n dynamicVertexBuffer.enableAttributes(gl, program);\n }\n if (dynamicVertexBuffer2) {\n dynamicVertexBuffer2.enableAttributes(gl, program);\n }\n\n layoutVertexBuffer.bind();\n layoutVertexBuffer.setVertexAttribPointers(gl, program, vertexOffset);\n for (const vertexBuffer of paintVertexBuffers) {\n vertexBuffer.bind();\n vertexBuffer.setVertexAttribPointers(gl, program, vertexOffset);\n }\n\n if (dynamicVertexBuffer) {\n dynamicVertexBuffer.bind();\n dynamicVertexBuffer.setVertexAttribPointers(gl, program, vertexOffset);\n }\n if (indexBuffer) {\n indexBuffer.bind();\n }\n if (dynamicVertexBuffer2) {\n dynamicVertexBuffer2.bind();\n dynamicVertexBuffer2.setVertexAttribPointers(gl, program, vertexOffset);\n }\n\n context.currentNumAttributes = numNextAttributes;\n }\n\n destroy() {\n if (this.vao) {\n this.context.extVertexArrayObject.deleteVertexArrayOES(this.vao);\n this.vao = null;\n }\n }\n}\n\nexport default VertexArrayObject;\n", "// @flow\n\nimport {prelude} from '../shaders';\nimport assert from 'assert';\nimport ProgramConfiguration from '../data/program_configuration';\nimport VertexArrayObject from './vertex_array_object';\nimport Context from '../gl/context';\n\nimport type SegmentVector from '../data/segment';\nimport type VertexBuffer from '../gl/vertex_buffer';\nimport type IndexBuffer from '../gl/index_buffer';\nimport type DepthMode from '../gl/depth_mode';\nimport type StencilMode from '../gl/stencil_mode';\nimport type ColorMode from '../gl/color_mode';\nimport type CullFaceMode from '../gl/cull_face_mode';\nimport type {UniformBindings, UniformValues, UniformLocations} from './uniform_binding';\nimport type {BinderUniform} from '../data/program_configuration';\n\nexport type DrawMode =\n | $PropertyType\n | $PropertyType\n | $PropertyType;\n\nfunction getTokenizedAttributesAndUniforms (array: Array): Array {\n const result = [];\n\n for (let i = 0; i < array.length; i++) {\n if (array[i] === null) continue;\n const token = array[i].split(' ');\n result.push(token.pop());\n }\n return result;\n}\nclass Program {\n program: WebGLProgram;\n attributes: {[_: string]: number};\n numAttributes: number;\n fixedUniforms: Us;\n binderUniforms: Array;\n failedToCreate: boolean;\n\n constructor(context: Context,\n name: string,\n source: {fragmentSource: string, vertexSource: string, staticAttributes: Array, staticUniforms: Array},\n configuration: ?ProgramConfiguration,\n fixedUniforms: (Context, UniformLocations) => Us,\n showOverdrawInspector: boolean) {\n const gl = context.gl;\n this.program = gl.createProgram();\n\n const staticAttrInfo = getTokenizedAttributesAndUniforms(source.staticAttributes);\n const dynamicAttrInfo = configuration ? configuration.getBinderAttributes() : [];\n const allAttrInfo = staticAttrInfo.concat(dynamicAttrInfo);\n\n const staticUniformsInfo = source.staticUniforms ? getTokenizedAttributesAndUniforms(source.staticUniforms) : [];\n const dynamicUniformsInfo = configuration ? configuration.getBinderUniforms() : [];\n // remove duplicate uniforms\n const uniformList = staticUniformsInfo.concat(dynamicUniformsInfo);\n const allUniformsInfo = [];\n for (const uniform of uniformList) {\n if (allUniformsInfo.indexOf(uniform) < 0) allUniformsInfo.push(uniform);\n }\n\n const defines = configuration ? configuration.defines() : [];\n if (showOverdrawInspector) {\n defines.push('#define OVERDRAW_INSPECTOR;');\n }\n\n const fragmentSource = defines.concat(prelude.fragmentSource, source.fragmentSource).join('\\n');\n const vertexSource = defines.concat(prelude.vertexSource, source.vertexSource).join('\\n');\n const fragmentShader = gl.createShader(gl.FRAGMENT_SHADER);\n if (gl.isContextLost()) {\n this.failedToCreate = true;\n return;\n }\n gl.shaderSource(fragmentShader, fragmentSource);\n gl.compileShader(fragmentShader);\n assert(gl.getShaderParameter(fragmentShader, gl.COMPILE_STATUS), (gl.getShaderInfoLog(fragmentShader): any));\n gl.attachShader(this.program, fragmentShader);\n\n const vertexShader = gl.createShader(gl.VERTEX_SHADER);\n if (gl.isContextLost()) {\n this.failedToCreate = true;\n return;\n }\n gl.shaderSource(vertexShader, vertexSource);\n gl.compileShader(vertexShader);\n assert(gl.getShaderParameter(vertexShader, gl.COMPILE_STATUS), (gl.getShaderInfoLog(vertexShader): any));\n gl.attachShader(this.program, vertexShader);\n\n this.attributes = {};\n const uniformLocations = {};\n\n this.numAttributes = allAttrInfo.length;\n\n for (let i = 0; i < this.numAttributes; i++) {\n if (allAttrInfo[i]) {\n gl.bindAttribLocation(this.program, i, allAttrInfo[i]);\n this.attributes[allAttrInfo[i]] = i;\n }\n }\n\n gl.linkProgram(this.program);\n assert(gl.getProgramParameter(this.program, gl.LINK_STATUS), (gl.getProgramInfoLog(this.program): any));\n\n gl.deleteShader(vertexShader);\n gl.deleteShader(fragmentShader);\n\n for (let it = 0; it < allUniformsInfo.length; it++) {\n const uniform = allUniformsInfo[it];\n if (uniform && !uniformLocations[uniform]) {\n const uniformLocation = gl.getUniformLocation(this.program, uniform);\n if (uniformLocation) {\n uniformLocations[uniform] = uniformLocation;\n }\n }\n }\n\n this.fixedUniforms = fixedUniforms(context, uniformLocations);\n this.binderUniforms = configuration ? configuration.getUniforms(context, uniformLocations) : [];\n }\n\n draw(context: Context,\n drawMode: DrawMode,\n depthMode: $ReadOnly,\n stencilMode: $ReadOnly,\n colorMode: $ReadOnly,\n cullFaceMode: $ReadOnly,\n uniformValues: UniformValues,\n layerID: string,\n layoutVertexBuffer: VertexBuffer,\n indexBuffer: IndexBuffer,\n segments: SegmentVector,\n currentProperties: any,\n zoom: ?number,\n configuration: ?ProgramConfiguration,\n dynamicLayoutBuffer: ?VertexBuffer,\n dynamicLayoutBuffer2: ?VertexBuffer) {\n\n const gl = context.gl;\n\n if (this.failedToCreate) return;\n\n context.program.set(this.program);\n context.setDepthMode(depthMode);\n context.setStencilMode(stencilMode);\n context.setColorMode(colorMode);\n context.setCullFace(cullFaceMode);\n\n for (const name in this.fixedUniforms) {\n this.fixedUniforms[name].set(uniformValues[name]);\n }\n\n if (configuration) {\n configuration.setUniforms(context, this.binderUniforms, currentProperties, {zoom: (zoom: any)});\n }\n\n const primitiveSize = {\n [gl.LINES]: 2,\n [gl.TRIANGLES]: 3,\n [gl.LINE_STRIP]: 1\n }[drawMode];\n\n for (const segment of segments.get()) {\n const vaos = segment.vaos || (segment.vaos = {});\n const vao: VertexArrayObject = vaos[layerID] || (vaos[layerID] = new VertexArrayObject());\n\n vao.bind(\n context,\n this,\n layoutVertexBuffer,\n configuration ? configuration.getPaintVertexBuffers() : [],\n indexBuffer,\n segment.vertexOffset,\n dynamicLayoutBuffer,\n dynamicLayoutBuffer2\n );\n\n gl.drawElements(\n drawMode,\n segment.primitiveLength * primitiveSize,\n gl.UNSIGNED_SHORT,\n segment.primitiveOffset * primitiveSize * 2);\n }\n }\n}\n\nexport default Program;\n", "// @flow\n\nimport assert from 'assert';\nimport {\n Uniform1i,\n Uniform1f,\n Uniform2f,\n Uniform3f\n} from '../uniform_binding';\nimport pixelsToTileUnits from '../../source/pixels_to_tile_units';\n\nimport type Painter from '../painter';\nimport type {OverscaledTileID} from '../../source/tile_id';\nimport type {CrossFaded} from '../../style/properties';\nimport type {CrossfadeParameters} from '../../style/evaluation_parameters';\nimport type {UniformValues} from '../uniform_binding';\nimport type Tile from '../../source/tile';\nimport type ResolvedImage from '../../style-spec/expression/types/resolved_image';\n\ntype BackgroundPatternUniformsType = {|\n 'u_image': Uniform1i,\n 'u_pattern_tl_a': Uniform2f,\n 'u_pattern_br_a': Uniform2f,\n 'u_pattern_tl_b': Uniform2f,\n 'u_pattern_br_b': Uniform2f,\n 'u_texsize': Uniform2f,\n 'u_mix': Uniform1f,\n 'u_pattern_size_a': Uniform2f,\n 'u_pattern_size_b': Uniform2f,\n 'u_scale_a': Uniform1f,\n 'u_scale_b': Uniform1f,\n 'u_pixel_coord_upper': Uniform2f,\n 'u_pixel_coord_lower': Uniform2f,\n 'u_tile_units_to_pixels': Uniform1f\n|};\n\nexport type PatternUniformsType = {|\n // pattern uniforms:\n 'u_image': Uniform1i,\n 'u_texsize': Uniform2f,\n 'u_scale': Uniform3f,\n 'u_fade': Uniform1f,\n 'u_pixel_coord_upper': Uniform2f,\n 'u_pixel_coord_lower': Uniform2f\n|};\n\nfunction patternUniformValues(crossfade: CrossfadeParameters, painter: Painter,\n tile: Tile\n): UniformValues {\n\n const tileRatio = 1 / pixelsToTileUnits(tile, 1, painter.transform.tileZoom);\n\n const numTiles = Math.pow(2, tile.tileID.overscaledZ);\n const tileSizeAtNearestZoom = tile.tileSize * Math.pow(2, painter.transform.tileZoom) / numTiles;\n\n const pixelX = tileSizeAtNearestZoom * (tile.tileID.canonical.x + tile.tileID.wrap * numTiles);\n const pixelY = tileSizeAtNearestZoom * tile.tileID.canonical.y;\n\n return {\n 'u_image': 0,\n 'u_texsize': tile.imageAtlasTexture.size,\n 'u_scale': [tileRatio, crossfade.fromScale, crossfade.toScale],\n 'u_fade': crossfade.t,\n // split the pixel coord into two pairs of 16 bit numbers. The glsl spec only guarantees 16 bits of precision.\n 'u_pixel_coord_upper': [pixelX >> 16, pixelY >> 16],\n 'u_pixel_coord_lower': [pixelX & 0xFFFF, pixelY & 0xFFFF]\n };\n}\n\nfunction bgPatternUniformValues(image: CrossFaded, crossfade: CrossfadeParameters, painter: Painter,\n tile: {tileID: OverscaledTileID, tileSize: number}\n): UniformValues {\n const imagePosA = painter.imageManager.getPattern(image.from.toString());\n const imagePosB = painter.imageManager.getPattern(image.to.toString());\n assert(imagePosA && imagePosB);\n const {width, height} = painter.imageManager.getPixelSize();\n\n const numTiles = Math.pow(2, tile.tileID.overscaledZ);\n const tileSizeAtNearestZoom = tile.tileSize * Math.pow(2, painter.transform.tileZoom) / numTiles;\n\n const pixelX = tileSizeAtNearestZoom * (tile.tileID.canonical.x + tile.tileID.wrap * numTiles);\n const pixelY = tileSizeAtNearestZoom * tile.tileID.canonical.y;\n\n return {\n 'u_image': 0,\n 'u_pattern_tl_a': (imagePosA: any).tl,\n 'u_pattern_br_a': (imagePosA: any).br,\n 'u_pattern_tl_b': (imagePosB: any).tl,\n 'u_pattern_br_b': (imagePosB: any).br,\n 'u_texsize': [width, height],\n 'u_mix': crossfade.t,\n 'u_pattern_size_a': (imagePosA: any).displaySize,\n 'u_pattern_size_b': (imagePosB: any).displaySize,\n 'u_scale_a': crossfade.fromScale,\n 'u_scale_b': crossfade.toScale,\n 'u_tile_units_to_pixels': 1 / pixelsToTileUnits(tile, 1, painter.transform.tileZoom),\n // split the pixel coord into two pairs of 16 bit numbers. The glsl spec only guarantees 16 bits of precision.\n 'u_pixel_coord_upper': [pixelX >> 16, pixelY >> 16],\n 'u_pixel_coord_lower': [pixelX & 0xFFFF, pixelY & 0xFFFF]\n };\n}\nexport {bgPatternUniformValues, patternUniformValues};\n", "// @flow\n\nimport {patternUniformValues} from './pattern';\nimport {\n Uniform1i,\n Uniform1f,\n Uniform2f,\n Uniform3f,\n UniformMatrix4f\n} from '../uniform_binding';\n\nimport {mat3, vec3} from 'gl-matrix';\nimport {extend} from '../../util/util';\n\nimport type Context from '../../gl/context';\nimport type Painter from '../painter';\nimport type {OverscaledTileID} from '../../source/tile_id';\nimport type {UniformValues, UniformLocations} from '../uniform_binding';\nimport type {CrossfadeParameters} from '../../style/evaluation_parameters';\nimport type Tile from '../../source/tile';\n\nexport type FillExtrusionUniformsType = {|\n 'u_matrix': UniformMatrix4f,\n 'u_lightpos': Uniform3f,\n 'u_lightintensity': Uniform1f,\n 'u_lightcolor': Uniform3f,\n 'u_vertical_gradient': Uniform1f,\n 'u_opacity': Uniform1f\n|};\n\nexport type FillExtrusionPatternUniformsType = {|\n 'u_matrix': UniformMatrix4f,\n 'u_lightpos': Uniform3f,\n 'u_lightintensity': Uniform1f,\n 'u_lightcolor': Uniform3f,\n 'u_height_factor': Uniform1f,\n 'u_vertical_gradient': Uniform1f,\n // pattern uniforms:\n 'u_texsize': Uniform2f,\n 'u_image': Uniform1i,\n 'u_pixel_coord_upper': Uniform2f,\n 'u_pixel_coord_lower': Uniform2f,\n 'u_scale': Uniform3f,\n 'u_fade': Uniform1f,\n 'u_opacity': Uniform1f\n|};\n\nconst fillExtrusionUniforms = (context: Context, locations: UniformLocations): FillExtrusionUniformsType => ({\n 'u_matrix': new UniformMatrix4f(context, locations.u_matrix),\n 'u_lightpos': new Uniform3f(context, locations.u_lightpos),\n 'u_lightintensity': new Uniform1f(context, locations.u_lightintensity),\n 'u_lightcolor': new Uniform3f(context, locations.u_lightcolor),\n 'u_vertical_gradient': new Uniform1f(context, locations.u_vertical_gradient),\n 'u_opacity': new Uniform1f(context, locations.u_opacity)\n});\n\nconst fillExtrusionPatternUniforms = (context: Context, locations: UniformLocations): FillExtrusionPatternUniformsType => ({\n 'u_matrix': new UniformMatrix4f(context, locations.u_matrix),\n 'u_lightpos': new Uniform3f(context, locations.u_lightpos),\n 'u_lightintensity': new Uniform1f(context, locations.u_lightintensity),\n 'u_lightcolor': new Uniform3f(context, locations.u_lightcolor),\n 'u_vertical_gradient': new Uniform1f(context, locations.u_vertical_gradient),\n 'u_height_factor': new Uniform1f(context, locations.u_height_factor),\n // pattern uniforms\n 'u_image': new Uniform1i(context, locations.u_image),\n 'u_texsize': new Uniform2f(context, locations.u_texsize),\n 'u_pixel_coord_upper': new Uniform2f(context, locations.u_pixel_coord_upper),\n 'u_pixel_coord_lower': new Uniform2f(context, locations.u_pixel_coord_lower),\n 'u_scale': new Uniform3f(context, locations.u_scale),\n 'u_fade': new Uniform1f(context, locations.u_fade),\n 'u_opacity': new Uniform1f(context, locations.u_opacity)\n});\n\nconst fillExtrusionUniformValues = (\n matrix: Float32Array,\n painter: Painter,\n shouldUseVerticalGradient: boolean,\n opacity: number\n): UniformValues => {\n const light = painter.style.light;\n const _lp = light.properties.get('position');\n const lightPos = [_lp.x, _lp.y, _lp.z];\n const lightMat = mat3.create();\n if (light.properties.get('anchor') === 'viewport') {\n mat3.fromRotation(lightMat, -painter.transform.angle);\n }\n vec3.transformMat3(lightPos, lightPos, lightMat);\n\n const lightColor = light.properties.get('color');\n\n return {\n 'u_matrix': matrix,\n 'u_lightpos': lightPos,\n 'u_lightintensity': light.properties.get('intensity'),\n 'u_lightcolor': [lightColor.r, lightColor.g, lightColor.b],\n 'u_vertical_gradient': +shouldUseVerticalGradient,\n 'u_opacity': opacity\n };\n};\n\nconst fillExtrusionPatternUniformValues = (\n matrix: Float32Array,\n painter: Painter,\n shouldUseVerticalGradient: boolean,\n opacity: number,\n coord: OverscaledTileID,\n crossfade: CrossfadeParameters,\n tile: Tile\n): UniformValues => {\n return extend(fillExtrusionUniformValues(matrix, painter, shouldUseVerticalGradient, opacity),\n patternUniformValues(crossfade, painter, tile),\n {\n 'u_height_factor': -Math.pow(2, coord.overscaledZ) / tile.tileSize / 8\n });\n};\n\nexport {\n fillExtrusionUniforms,\n fillExtrusionPatternUniforms,\n fillExtrusionUniformValues,\n fillExtrusionPatternUniformValues\n};\n", "// @flow\n\nimport {patternUniformValues} from './pattern';\nimport {\n Uniform1i,\n Uniform1f,\n Uniform2f,\n Uniform3f,\n UniformMatrix4f\n} from '../uniform_binding';\nimport {extend} from '../../util/util';\n\nimport type Painter from '../painter';\nimport type {UniformValues, UniformLocations} from '../uniform_binding';\nimport type Context from '../../gl/context';\nimport type {CrossfadeParameters} from '../../style/evaluation_parameters';\nimport type Tile from '../../source/tile';\n\nexport type FillUniformsType = {|\n 'u_matrix': UniformMatrix4f\n|};\n\nexport type FillOutlineUniformsType = {|\n 'u_matrix': UniformMatrix4f,\n 'u_world': Uniform2f\n|};\n\nexport type FillPatternUniformsType = {|\n 'u_matrix': UniformMatrix4f,\n // pattern uniforms:\n 'u_texsize': Uniform2f,\n 'u_image': Uniform1i,\n 'u_pixel_coord_upper': Uniform2f,\n 'u_pixel_coord_lower': Uniform2f,\n 'u_scale': Uniform3f,\n 'u_fade': Uniform1f\n|};\n\nexport type FillOutlinePatternUniformsType = {|\n 'u_matrix': UniformMatrix4f,\n 'u_world': Uniform2f,\n // pattern uniforms:\n 'u_texsize': Uniform2f,\n 'u_image': Uniform1i,\n 'u_pixel_coord_upper': Uniform2f,\n 'u_pixel_coord_lower': Uniform2f,\n 'u_scale': Uniform3f,\n 'u_fade': Uniform1f\n|};\n\nconst fillUniforms = (context: Context, locations: UniformLocations): FillUniformsType => ({\n 'u_matrix': new UniformMatrix4f(context, locations.u_matrix)\n});\n\nconst fillPatternUniforms = (context: Context, locations: UniformLocations): FillPatternUniformsType => ({\n 'u_matrix': new UniformMatrix4f(context, locations.u_matrix),\n 'u_image': new Uniform1i(context, locations.u_image),\n 'u_texsize': new Uniform2f(context, locations.u_texsize),\n 'u_pixel_coord_upper': new Uniform2f(context, locations.u_pixel_coord_upper),\n 'u_pixel_coord_lower': new Uniform2f(context, locations.u_pixel_coord_lower),\n 'u_scale': new Uniform3f(context, locations.u_scale),\n 'u_fade': new Uniform1f(context, locations.u_fade)\n\n});\n\nconst fillOutlineUniforms = (context: Context, locations: UniformLocations): FillOutlineUniformsType => ({\n 'u_matrix': new UniformMatrix4f(context, locations.u_matrix),\n 'u_world': new Uniform2f(context, locations.u_world)\n});\n\nconst fillOutlinePatternUniforms = (context: Context, locations: UniformLocations): FillOutlinePatternUniformsType => ({\n 'u_matrix': new UniformMatrix4f(context, locations.u_matrix),\n 'u_world': new Uniform2f(context, locations.u_world),\n 'u_image': new Uniform1i(context, locations.u_image),\n 'u_texsize': new Uniform2f(context, locations.u_texsize),\n 'u_pixel_coord_upper': new Uniform2f(context, locations.u_pixel_coord_upper),\n 'u_pixel_coord_lower': new Uniform2f(context, locations.u_pixel_coord_lower),\n 'u_scale': new Uniform3f(context, locations.u_scale),\n 'u_fade': new Uniform1f(context, locations.u_fade)\n});\n\nconst fillUniformValues = (matrix: Float32Array): UniformValues => ({\n 'u_matrix': matrix\n});\n\nconst fillPatternUniformValues = (\n matrix: Float32Array,\n painter: Painter,\n crossfade: CrossfadeParameters,\n tile: Tile\n): UniformValues => extend(\n fillUniformValues(matrix),\n patternUniformValues(crossfade, painter, tile)\n);\n\nconst fillOutlineUniformValues = (\n matrix: Float32Array,\n drawingBufferSize: [number, number]\n): UniformValues => ({\n 'u_matrix': matrix,\n 'u_world': drawingBufferSize\n});\n\nconst fillOutlinePatternUniformValues = (\n matrix: Float32Array,\n painter: Painter,\n crossfade: CrossfadeParameters,\n tile: Tile,\n drawingBufferSize: [number, number]\n): UniformValues => extend(\n fillPatternUniformValues(matrix, painter, crossfade, tile),\n {\n 'u_world': drawingBufferSize\n }\n);\n\nexport {\n fillUniforms,\n fillPatternUniforms,\n fillOutlineUniforms,\n fillOutlinePatternUniforms,\n fillUniformValues,\n fillPatternUniformValues,\n fillOutlineUniformValues,\n fillOutlinePatternUniformValues\n};\n", "// @flow\n\nimport {\n Uniform1i,\n Uniform1f,\n Uniform2f,\n UniformMatrix4f\n} from '../uniform_binding';\nimport pixelsToTileUnits from '../../source/pixels_to_tile_units';\n\nimport type Context from '../../gl/context';\nimport type {UniformValues, UniformLocations} from '../uniform_binding';\nimport type {OverscaledTileID} from '../../source/tile_id';\nimport type Tile from '../../source/tile';\nimport type CircleStyleLayer from '../../style/style_layer/circle_style_layer';\nimport type Painter from '../painter';\nimport browser from '../../util/browser';\n\nexport type CircleUniformsType = {|\n 'u_camera_to_center_distance': Uniform1f,\n 'u_scale_with_map': Uniform1i,\n 'u_pitch_with_map': Uniform1i,\n 'u_extrude_scale': Uniform2f,\n 'u_device_pixel_ratio': Uniform1f,\n 'u_matrix': UniformMatrix4f\n|};\n\nconst circleUniforms = (context: Context, locations: UniformLocations): CircleUniformsType => ({\n 'u_camera_to_center_distance': new Uniform1f(context, locations.u_camera_to_center_distance),\n 'u_scale_with_map': new Uniform1i(context, locations.u_scale_with_map),\n 'u_pitch_with_map': new Uniform1i(context, locations.u_pitch_with_map),\n 'u_extrude_scale': new Uniform2f(context, locations.u_extrude_scale),\n 'u_device_pixel_ratio': new Uniform1f(context, locations.u_device_pixel_ratio),\n 'u_matrix': new UniformMatrix4f(context, locations.u_matrix)\n});\n\nconst circleUniformValues = (\n painter: Painter,\n coord: OverscaledTileID,\n tile: Tile,\n layer: CircleStyleLayer\n): UniformValues => {\n const transform = painter.transform;\n\n let pitchWithMap: boolean, extrudeScale: [number, number];\n if (layer.paint.get('circle-pitch-alignment') === 'map') {\n const pixelRatio = pixelsToTileUnits(tile, 1, transform.zoom);\n pitchWithMap = true;\n extrudeScale = [pixelRatio, pixelRatio];\n } else {\n pitchWithMap = false;\n extrudeScale = transform.pixelsToGLUnits;\n }\n\n return {\n 'u_camera_to_center_distance': transform.cameraToCenterDistance,\n 'u_scale_with_map': +(layer.paint.get('circle-pitch-scale') === 'map'),\n 'u_matrix': painter.translatePosMatrix(\n coord.posMatrix,\n tile,\n layer.paint.get('circle-translate'),\n layer.paint.get('circle-translate-anchor')),\n 'u_pitch_with_map': +(pitchWithMap),\n 'u_device_pixel_ratio': browser.devicePixelRatio,\n 'u_extrude_scale': extrudeScale\n };\n};\n\nexport {circleUniforms, circleUniformValues};\n", "// @flow\n\nimport {\n Uniform1f,\n Uniform2f,\n UniformMatrix4f\n} from '../uniform_binding';\nimport pixelsToTileUnits from '../../source/pixels_to_tile_units';\n\nimport type Context from '../../gl/context';\nimport type {UniformValues, UniformLocations} from '../uniform_binding';\nimport type Transform from '../../geo/transform';\nimport type Tile from '../../source/tile';\n\nexport type CollisionUniformsType = {|\n 'u_matrix': UniformMatrix4f,\n 'u_camera_to_center_distance': Uniform1f,\n 'u_pixels_to_tile_units': Uniform1f,\n 'u_extrude_scale': Uniform2f,\n 'u_overscale_factor': Uniform1f\n|};\n\nexport type CollisionCircleUniformsType = {|\n 'u_matrix': UniformMatrix4f,\n 'u_inv_matrix': UniformMatrix4f,\n 'u_camera_to_center_distance': Uniform1f,\n 'u_viewport_size': Uniform2f\n|};\n\nconst collisionUniforms = (context: Context, locations: UniformLocations): CollisionUniformsType => ({\n 'u_matrix': new UniformMatrix4f(context, locations.u_matrix),\n 'u_camera_to_center_distance': new Uniform1f(context, locations.u_camera_to_center_distance),\n 'u_pixels_to_tile_units': new Uniform1f(context, locations.u_pixels_to_tile_units),\n 'u_extrude_scale': new Uniform2f(context, locations.u_extrude_scale),\n 'u_overscale_factor': new Uniform1f(context, locations.u_overscale_factor)\n});\n\nconst collisionCircleUniforms = (context: Context, locations: UniformLocations): CollisionCircleUniformsType => ({\n 'u_matrix': new UniformMatrix4f(context, locations.u_matrix),\n 'u_inv_matrix': new UniformMatrix4f(context, locations.u_inv_matrix),\n 'u_camera_to_center_distance': new Uniform1f(context, locations.u_camera_to_center_distance),\n 'u_viewport_size': new Uniform2f(context, locations.u_viewport_size)\n});\n\nconst collisionUniformValues = (\n matrix: Float32Array,\n transform: Transform,\n tile: Tile\n): UniformValues => {\n const pixelRatio = pixelsToTileUnits(tile, 1, transform.zoom);\n const scale = Math.pow(2, transform.zoom - tile.tileID.overscaledZ);\n const overscaleFactor = tile.tileID.overscaleFactor();\n return {\n 'u_matrix': matrix,\n 'u_camera_to_center_distance': transform.cameraToCenterDistance,\n 'u_pixels_to_tile_units': pixelRatio,\n 'u_extrude_scale': [transform.pixelsToGLUnits[0] / (pixelRatio * scale),\n transform.pixelsToGLUnits[1] / (pixelRatio * scale)],\n 'u_overscale_factor': overscaleFactor\n };\n};\n\nconst collisionCircleUniformValues = (\n matrix: Float32Array,\n invMatrix: Float32Array,\n transform: Transform\n): UniformValues => {\n return {\n 'u_matrix': matrix,\n 'u_inv_matrix': invMatrix,\n 'u_camera_to_center_distance': transform.cameraToCenterDistance,\n 'u_viewport_size': [transform.width, transform.height]\n };\n};\n\nexport {collisionUniforms, collisionUniformValues, collisionCircleUniforms, collisionCircleUniformValues};\n", "// @flow\n\nimport {\n UniformColor,\n UniformMatrix4f,\n Uniform1i,\n Uniform1f\n} from '../uniform_binding';\n\nimport type Context from '../../gl/context';\nimport type {UniformValues, UniformLocations} from '../uniform_binding';\nimport type Color from '../../style-spec/util/color';\n\nexport type DebugUniformsType = {|\n 'u_color': UniformColor,\n 'u_matrix': UniformMatrix4f,\n 'u_overlay': Uniform1i,\n 'u_overlay_scale': Uniform1f\n|};\n\nconst debugUniforms = (context: Context, locations: UniformLocations): DebugUniformsType => ({\n 'u_color': new UniformColor(context, locations.u_color),\n 'u_matrix': new UniformMatrix4f(context, locations.u_matrix),\n 'u_overlay': new Uniform1i(context, locations.u_overlay),\n 'u_overlay_scale': new Uniform1f(context, locations.u_overlay_scale),\n});\n\nconst debugUniformValues = (matrix: Float32Array, color: Color, scaleRatio: number = 1): UniformValues => ({\n 'u_matrix': matrix,\n 'u_color': color,\n 'u_overlay': 0,\n 'u_overlay_scale': scaleRatio\n});\n\nexport {debugUniforms, debugUniformValues};\n", "// @flow\n\nimport {UniformMatrix4f} from '../uniform_binding';\n\nimport type Context from '../../gl/context';\nimport type {UniformValues, UniformLocations} from '../uniform_binding';\n\nexport type ClippingMaskUniformsType = {|\n 'u_matrix': UniformMatrix4f\n|};\n\nconst clippingMaskUniforms = (context: Context, locations: UniformLocations): ClippingMaskUniformsType => ({\n 'u_matrix': new UniformMatrix4f(context, locations.u_matrix)\n});\n\nconst clippingMaskUniformValues = (matrix: Float32Array): UniformValues => ({\n 'u_matrix': matrix\n});\n\nexport {clippingMaskUniforms, clippingMaskUniformValues};\n", "// @flow\n\nimport {mat4} from 'gl-matrix';\n\nimport {\n Uniform1i,\n Uniform1f,\n Uniform2f,\n UniformMatrix4f\n} from '../uniform_binding';\nimport pixelsToTileUnits from '../../source/pixels_to_tile_units';\n\nimport type Context from '../../gl/context';\nimport type Tile from '../../source/tile';\nimport type {UniformValues, UniformLocations} from '../uniform_binding';\nimport type Painter from '../painter';\nimport type HeatmapStyleLayer from '../../style/style_layer/heatmap_style_layer';\n\nexport type HeatmapUniformsType = {|\n 'u_extrude_scale': Uniform1f,\n 'u_intensity': Uniform1f,\n 'u_matrix': UniformMatrix4f\n|};\n\nexport type HeatmapTextureUniformsType = {|\n 'u_matrix': UniformMatrix4f,\n 'u_world': Uniform2f,\n 'u_image': Uniform1i,\n 'u_color_ramp': Uniform1i,\n 'u_opacity': Uniform1f\n|};\n\nconst heatmapUniforms = (context: Context, locations: UniformLocations): HeatmapUniformsType => ({\n 'u_extrude_scale': new Uniform1f(context, locations.u_extrude_scale),\n 'u_intensity': new Uniform1f(context, locations.u_intensity),\n 'u_matrix': new UniformMatrix4f(context, locations.u_matrix)\n});\n\nconst heatmapTextureUniforms = (context: Context, locations: UniformLocations): HeatmapTextureUniformsType => ({\n 'u_matrix': new UniformMatrix4f(context, locations.u_matrix),\n 'u_world': new Uniform2f(context, locations.u_world),\n 'u_image': new Uniform1i(context, locations.u_image),\n 'u_color_ramp': new Uniform1i(context, locations.u_color_ramp),\n 'u_opacity': new Uniform1f(context, locations.u_opacity)\n});\n\nconst heatmapUniformValues = (\n matrix: Float32Array,\n tile: Tile,\n zoom: number,\n intensity: number\n): UniformValues => ({\n 'u_matrix': matrix,\n 'u_extrude_scale': pixelsToTileUnits(tile, 1, zoom),\n 'u_intensity': intensity\n});\n\nconst heatmapTextureUniformValues = (\n painter: Painter,\n layer: HeatmapStyleLayer,\n textureUnit: number,\n colorRampUnit: number\n): UniformValues => {\n const matrix = mat4.create();\n mat4.ortho(matrix, 0, painter.width, painter.height, 0, 0, 1);\n\n const gl = painter.context.gl;\n\n return {\n 'u_matrix': matrix,\n 'u_world': [gl.drawingBufferWidth, gl.drawingBufferHeight],\n 'u_image': textureUnit,\n 'u_color_ramp': colorRampUnit,\n 'u_opacity': layer.paint.get('heatmap-opacity')\n };\n};\n\nexport {\n heatmapUniforms,\n heatmapTextureUniforms,\n heatmapUniformValues,\n heatmapTextureUniformValues\n};\n", "// @flow\n\nimport {\n Uniform1i,\n Uniform1f,\n Uniform2f,\n Uniform3f,\n UniformMatrix4f\n} from '../uniform_binding';\nimport pixelsToTileUnits from '../../source/pixels_to_tile_units';\nimport {extend} from '../../util/util';\nimport browser from '../../util/browser';\n\nimport type Context from '../../gl/context';\nimport type {UniformValues, UniformLocations} from '../uniform_binding';\nimport type Transform from '../../geo/transform';\nimport type Tile from '../../source/tile';\nimport type {CrossFaded} from '../../style/properties';\nimport type LineStyleLayer from '../../style/style_layer/line_style_layer';\nimport type Painter from '../painter';\nimport type {CrossfadeParameters} from '../../style/evaluation_parameters';\n\nexport type LineUniformsType = {|\n 'u_matrix': UniformMatrix4f,\n 'u_ratio': Uniform1f,\n 'u_device_pixel_ratio': Uniform1f,\n 'u_units_to_pixels': Uniform2f\n|};\n\nexport type LineGradientUniformsType = {|\n 'u_matrix': UniformMatrix4f,\n 'u_ratio': Uniform1f,\n 'u_device_pixel_ratio': Uniform1f,\n 'u_units_to_pixels': Uniform2f,\n 'u_image': Uniform1i,\n 'u_image_height': Uniform1f,\n|};\n\nexport type LinePatternUniformsType = {|\n 'u_matrix': UniformMatrix4f,\n 'u_texsize': Uniform2f,\n 'u_ratio': Uniform1f,\n 'u_device_pixel_ratio': Uniform1f,\n 'u_units_to_pixels': Uniform2f,\n 'u_image': Uniform1i,\n 'u_scale': Uniform3f,\n 'u_fade': Uniform1f\n|};\n\nexport type LineSDFUniformsType = {|\n 'u_matrix': UniformMatrix4f,\n 'u_ratio': Uniform1f,\n 'u_device_pixel_ratio': Uniform1f,\n 'u_units_to_pixels': Uniform2f,\n 'u_patternscale_a': Uniform2f,\n 'u_patternscale_b': Uniform2f,\n 'u_sdfgamma': Uniform1f,\n 'u_image': Uniform1i,\n 'u_tex_y_a': Uniform1f,\n 'u_tex_y_b': Uniform1f,\n 'u_mix': Uniform1f\n|};\n\nconst lineUniforms = (context: Context, locations: UniformLocations): LineUniformsType => ({\n 'u_matrix': new UniformMatrix4f(context, locations.u_matrix),\n 'u_ratio': new Uniform1f(context, locations.u_ratio),\n 'u_device_pixel_ratio': new Uniform1f(context, locations.u_device_pixel_ratio),\n 'u_units_to_pixels': new Uniform2f(context, locations.u_units_to_pixels)\n});\n\nconst lineGradientUniforms = (context: Context, locations: UniformLocations): LineGradientUniformsType => ({\n 'u_matrix': new UniformMatrix4f(context, locations.u_matrix),\n 'u_ratio': new Uniform1f(context, locations.u_ratio),\n 'u_device_pixel_ratio': new Uniform1f(context, locations.u_device_pixel_ratio),\n 'u_units_to_pixels': new Uniform2f(context, locations.u_units_to_pixels),\n 'u_image': new Uniform1i(context, locations.u_image),\n 'u_image_height': new Uniform1f(context, locations.u_image_height),\n});\n\nconst linePatternUniforms = (context: Context, locations: UniformLocations): LinePatternUniformsType => ({\n 'u_matrix': new UniformMatrix4f(context, locations.u_matrix),\n 'u_texsize': new Uniform2f(context, locations.u_texsize),\n 'u_ratio': new Uniform1f(context, locations.u_ratio),\n 'u_device_pixel_ratio': new Uniform1f(context, locations.u_device_pixel_ratio),\n 'u_image': new Uniform1i(context, locations.u_image),\n 'u_units_to_pixels': new Uniform2f(context, locations.u_units_to_pixels),\n 'u_scale': new Uniform3f(context, locations.u_scale),\n 'u_fade': new Uniform1f(context, locations.u_fade)\n});\n\nconst lineSDFUniforms = (context: Context, locations: UniformLocations): LineSDFUniformsType => ({\n 'u_matrix': new UniformMatrix4f(context, locations.u_matrix),\n 'u_ratio': new Uniform1f(context, locations.u_ratio),\n 'u_device_pixel_ratio': new Uniform1f(context, locations.u_device_pixel_ratio),\n 'u_units_to_pixels': new Uniform2f(context, locations.u_units_to_pixels),\n 'u_patternscale_a': new Uniform2f(context, locations.u_patternscale_a),\n 'u_patternscale_b': new Uniform2f(context, locations.u_patternscale_b),\n 'u_sdfgamma': new Uniform1f(context, locations.u_sdfgamma),\n 'u_image': new Uniform1i(context, locations.u_image),\n 'u_tex_y_a': new Uniform1f(context, locations.u_tex_y_a),\n 'u_tex_y_b': new Uniform1f(context, locations.u_tex_y_b),\n 'u_mix': new Uniform1f(context, locations.u_mix)\n});\n\nconst lineUniformValues = (\n painter: Painter,\n tile: Tile,\n layer: LineStyleLayer\n): UniformValues => {\n const transform = painter.transform;\n\n return {\n 'u_matrix': calculateMatrix(painter, tile, layer),\n 'u_ratio': 1 / pixelsToTileUnits(tile, 1, transform.zoom),\n 'u_device_pixel_ratio': browser.devicePixelRatio,\n 'u_units_to_pixels': [\n 1 / transform.pixelsToGLUnits[0],\n 1 / transform.pixelsToGLUnits[1]\n ]\n };\n};\n\nconst lineGradientUniformValues = (\n painter: Painter,\n tile: Tile,\n layer: LineStyleLayer,\n imageHeight: number\n): UniformValues => {\n return extend(lineUniformValues(painter, tile, layer), {\n 'u_image': 0,\n 'u_image_height': imageHeight,\n });\n};\n\nconst linePatternUniformValues = (\n painter: Painter,\n tile: Tile,\n layer: LineStyleLayer,\n crossfade: CrossfadeParameters\n): UniformValues => {\n const transform = painter.transform;\n const tileZoomRatio = calculateTileRatio(tile, transform);\n return {\n 'u_matrix': calculateMatrix(painter, tile, layer),\n 'u_texsize': tile.imageAtlasTexture.size,\n // camera zoom ratio\n 'u_ratio': 1 / pixelsToTileUnits(tile, 1, transform.zoom),\n 'u_device_pixel_ratio': browser.devicePixelRatio,\n 'u_image': 0,\n 'u_scale': [tileZoomRatio, crossfade.fromScale, crossfade.toScale],\n 'u_fade': crossfade.t,\n 'u_units_to_pixels': [\n 1 / transform.pixelsToGLUnits[0],\n 1 / transform.pixelsToGLUnits[1]\n ]\n };\n};\n\nconst lineSDFUniformValues = (\n painter: Painter,\n tile: Tile,\n layer: LineStyleLayer,\n dasharray: CrossFaded>,\n crossfade: CrossfadeParameters\n): UniformValues => {\n const transform = painter.transform;\n const lineAtlas = painter.lineAtlas;\n const tileRatio = calculateTileRatio(tile, transform);\n\n const round = layer.layout.get('line-cap') === 'round';\n\n const posA = lineAtlas.getDash(dasharray.from, round);\n const posB = lineAtlas.getDash(dasharray.to, round);\n\n const widthA = posA.width * crossfade.fromScale;\n const widthB = posB.width * crossfade.toScale;\n\n return extend(lineUniformValues(painter, tile, layer), {\n 'u_patternscale_a': [tileRatio / widthA, -posA.height / 2],\n 'u_patternscale_b': [tileRatio / widthB, -posB.height / 2],\n 'u_sdfgamma': lineAtlas.width / (Math.min(widthA, widthB) * 256 * browser.devicePixelRatio) / 2,\n 'u_image': 0,\n 'u_tex_y_a': posA.y,\n 'u_tex_y_b': posB.y,\n 'u_mix': crossfade.t\n });\n};\n\nfunction calculateTileRatio(tile: Tile, transform: Transform) {\n return 1 / pixelsToTileUnits(tile, 1, transform.tileZoom);\n}\n\nfunction calculateMatrix(painter, tile, layer) {\n return painter.translatePosMatrix(\n tile.tileID.posMatrix,\n tile,\n layer.paint.get('line-translate'),\n layer.paint.get('line-translate-anchor')\n );\n}\n\nexport {\n lineUniforms,\n lineGradientUniforms,\n linePatternUniforms,\n lineSDFUniforms,\n lineUniformValues,\n lineGradientUniformValues,\n linePatternUniformValues,\n lineSDFUniformValues\n};\n", "// @flow\n\nimport {\n Uniform1i,\n Uniform1f,\n Uniform2f,\n Uniform3f,\n UniformMatrix4f\n} from '../uniform_binding';\n\nimport type Context from '../../gl/context';\nimport type {UniformValues, UniformLocations} from '../uniform_binding';\nimport type RasterStyleLayer from '../../style/style_layer/raster_style_layer';\n\nexport type RasterUniformsType = {|\n 'u_matrix': UniformMatrix4f,\n 'u_tl_parent': Uniform2f,\n 'u_scale_parent': Uniform1f,\n 'u_buffer_scale': Uniform1f,\n 'u_fade_t': Uniform1f,\n 'u_opacity': Uniform1f,\n 'u_image0': Uniform1i,\n 'u_image1': Uniform1i,\n 'u_brightness_low': Uniform1f,\n 'u_brightness_high': Uniform1f,\n 'u_saturation_factor': Uniform1f,\n 'u_contrast_factor': Uniform1f,\n 'u_spin_weights': Uniform3f\n|};\n\nconst rasterUniforms = (context: Context, locations: UniformLocations): RasterUniformsType => ({\n 'u_matrix': new UniformMatrix4f(context, locations.u_matrix),\n 'u_tl_parent': new Uniform2f(context, locations.u_tl_parent),\n 'u_scale_parent': new Uniform1f(context, locations.u_scale_parent),\n 'u_buffer_scale': new Uniform1f(context, locations.u_buffer_scale),\n 'u_fade_t': new Uniform1f(context, locations.u_fade_t),\n 'u_opacity': new Uniform1f(context, locations.u_opacity),\n 'u_image0': new Uniform1i(context, locations.u_image0),\n 'u_image1': new Uniform1i(context, locations.u_image1),\n 'u_brightness_low': new Uniform1f(context, locations.u_brightness_low),\n 'u_brightness_high': new Uniform1f(context, locations.u_brightness_high),\n 'u_saturation_factor': new Uniform1f(context, locations.u_saturation_factor),\n 'u_contrast_factor': new Uniform1f(context, locations.u_contrast_factor),\n 'u_spin_weights': new Uniform3f(context, locations.u_spin_weights)\n});\n\nconst rasterUniformValues = (\n matrix: Float32Array,\n parentTL: [number, number],\n parentScaleBy: number,\n fade: {mix: number, opacity: number},\n layer: RasterStyleLayer\n): UniformValues => ({\n 'u_matrix': matrix,\n 'u_tl_parent': parentTL,\n 'u_scale_parent': parentScaleBy,\n 'u_buffer_scale': 1,\n 'u_fade_t': fade.mix,\n 'u_opacity': fade.opacity * layer.paint.get('raster-opacity'),\n 'u_image0': 0,\n 'u_image1': 1,\n 'u_brightness_low': layer.paint.get('raster-brightness-min'),\n 'u_brightness_high': layer.paint.get('raster-brightness-max'),\n 'u_saturation_factor': saturationFactor(layer.paint.get('raster-saturation')),\n 'u_contrast_factor': contrastFactor(layer.paint.get('raster-contrast')),\n 'u_spin_weights': spinWeights(layer.paint.get('raster-hue-rotate'))\n});\n\nfunction spinWeights(angle) {\n angle *= Math.PI / 180;\n const s = Math.sin(angle);\n const c = Math.cos(angle);\n return [\n (2 * c + 1) / 3,\n (-Math.sqrt(3) * s - c + 1) / 3,\n (Math.sqrt(3) * s - c + 1) / 3\n ];\n}\n\nfunction contrastFactor(contrast) {\n return contrast > 0 ?\n 1 / (1 - contrast) :\n 1 + contrast;\n}\n\nfunction saturationFactor(saturation) {\n return saturation > 0 ?\n 1 - 1 / (1.001 - saturation) :\n -saturation;\n}\n\nexport {rasterUniforms, rasterUniformValues};\n", "// @flow\n\nimport {\n Uniform1i,\n Uniform1f,\n Uniform2f,\n UniformMatrix4f\n} from '../uniform_binding';\nimport {extend} from '../../util/util';\nimport browser from '../../util/browser';\n\nimport type Context from '../../gl/context';\nimport type Painter from '../painter';\nimport type {UniformValues, UniformLocations} from '../uniform_binding';\n\nexport type SymbolIconUniformsType = {|\n 'u_is_size_zoom_constant': Uniform1i,\n 'u_is_size_feature_constant': Uniform1i,\n 'u_size_t': Uniform1f,\n 'u_size': Uniform1f,\n 'u_camera_to_center_distance': Uniform1f,\n 'u_pitch': Uniform1f,\n 'u_rotate_symbol': Uniform1i,\n 'u_aspect_ratio': Uniform1f,\n 'u_fade_change': Uniform1f,\n 'u_matrix': UniformMatrix4f,\n 'u_label_plane_matrix': UniformMatrix4f,\n 'u_coord_matrix': UniformMatrix4f,\n 'u_is_text': Uniform1i,\n 'u_pitch_with_map': Uniform1i,\n 'u_texsize': Uniform2f,\n 'u_texture': Uniform1i\n|};\n\nexport type SymbolSDFUniformsType = {|\n 'u_is_size_zoom_constant': Uniform1i,\n 'u_is_size_feature_constant': Uniform1i,\n 'u_size_t': Uniform1f,\n 'u_size': Uniform1f,\n 'u_camera_to_center_distance': Uniform1f,\n 'u_pitch': Uniform1f,\n 'u_rotate_symbol': Uniform1i,\n 'u_aspect_ratio': Uniform1f,\n 'u_fade_change': Uniform1f,\n 'u_matrix': UniformMatrix4f,\n 'u_label_plane_matrix': UniformMatrix4f,\n 'u_coord_matrix': UniformMatrix4f,\n 'u_is_text': Uniform1i,\n 'u_pitch_with_map': Uniform1i,\n 'u_texsize': Uniform2f,\n 'u_texture': Uniform1i,\n 'u_gamma_scale': Uniform1f,\n 'u_device_pixel_ratio': Uniform1f,\n 'u_is_halo': Uniform1i\n|};\n\nexport type symbolTextAndIconUniformsType = {|\n 'u_is_size_zoom_constant': Uniform1i,\n 'u_is_size_feature_constant': Uniform1i,\n 'u_size_t': Uniform1f,\n 'u_size': Uniform1f,\n 'u_camera_to_center_distance': Uniform1f,\n 'u_pitch': Uniform1f,\n 'u_rotate_symbol': Uniform1i,\n 'u_aspect_ratio': Uniform1f,\n 'u_fade_change': Uniform1f,\n 'u_matrix': UniformMatrix4f,\n 'u_label_plane_matrix': UniformMatrix4f,\n 'u_coord_matrix': UniformMatrix4f,\n 'u_is_text': Uniform1i,\n 'u_pitch_with_map': Uniform1i,\n 'u_texsize': Uniform2f,\n 'u_texsize_icon': Uniform2f,\n 'u_texture': Uniform1i,\n 'u_texture_icon': Uniform1i,\n 'u_gamma_scale': Uniform1f,\n 'u_device_pixel_ratio': Uniform1f,\n 'u_is_halo': Uniform1i\n|};\n\nconst symbolIconUniforms = (context: Context, locations: UniformLocations): SymbolIconUniformsType => ({\n 'u_is_size_zoom_constant': new Uniform1i(context, locations.u_is_size_zoom_constant),\n 'u_is_size_feature_constant': new Uniform1i(context, locations.u_is_size_feature_constant),\n 'u_size_t': new Uniform1f(context, locations.u_size_t),\n 'u_size': new Uniform1f(context, locations.u_size),\n 'u_camera_to_center_distance': new Uniform1f(context, locations.u_camera_to_center_distance),\n 'u_pitch': new Uniform1f(context, locations.u_pitch),\n 'u_rotate_symbol': new Uniform1i(context, locations.u_rotate_symbol),\n 'u_aspect_ratio': new Uniform1f(context, locations.u_aspect_ratio),\n 'u_fade_change': new Uniform1f(context, locations.u_fade_change),\n 'u_matrix': new UniformMatrix4f(context, locations.u_matrix),\n 'u_label_plane_matrix': new UniformMatrix4f(context, locations.u_label_plane_matrix),\n 'u_coord_matrix': new UniformMatrix4f(context, locations.u_coord_matrix),\n 'u_is_text': new Uniform1i(context, locations.u_is_text),\n 'u_pitch_with_map': new Uniform1i(context, locations.u_pitch_with_map),\n 'u_texsize': new Uniform2f(context, locations.u_texsize),\n 'u_texture': new Uniform1i(context, locations.u_texture)\n});\n\nconst symbolSDFUniforms = (context: Context, locations: UniformLocations): SymbolSDFUniformsType => ({\n 'u_is_size_zoom_constant': new Uniform1i(context, locations.u_is_size_zoom_constant),\n 'u_is_size_feature_constant': new Uniform1i(context, locations.u_is_size_feature_constant),\n 'u_size_t': new Uniform1f(context, locations.u_size_t),\n 'u_size': new Uniform1f(context, locations.u_size),\n 'u_camera_to_center_distance': new Uniform1f(context, locations.u_camera_to_center_distance),\n 'u_pitch': new Uniform1f(context, locations.u_pitch),\n 'u_rotate_symbol': new Uniform1i(context, locations.u_rotate_symbol),\n 'u_aspect_ratio': new Uniform1f(context, locations.u_aspect_ratio),\n 'u_fade_change': new Uniform1f(context, locations.u_fade_change),\n 'u_matrix': new UniformMatrix4f(context, locations.u_matrix),\n 'u_label_plane_matrix': new UniformMatrix4f(context, locations.u_label_plane_matrix),\n 'u_coord_matrix': new UniformMatrix4f(context, locations.u_coord_matrix),\n 'u_is_text': new Uniform1i(context, locations.u_is_text),\n 'u_pitch_with_map': new Uniform1i(context, locations.u_pitch_with_map),\n 'u_texsize': new Uniform2f(context, locations.u_texsize),\n 'u_texture': new Uniform1i(context, locations.u_texture),\n 'u_gamma_scale': new Uniform1f(context, locations.u_gamma_scale),\n 'u_device_pixel_ratio': new Uniform1f(context, locations.u_device_pixel_ratio),\n 'u_is_halo': new Uniform1i(context, locations.u_is_halo)\n});\n\nconst symbolTextAndIconUniforms = (context: Context, locations: UniformLocations): symbolTextAndIconUniformsType => ({\n 'u_is_size_zoom_constant': new Uniform1i(context, locations.u_is_size_zoom_constant),\n 'u_is_size_feature_constant': new Uniform1i(context, locations.u_is_size_feature_constant),\n 'u_size_t': new Uniform1f(context, locations.u_size_t),\n 'u_size': new Uniform1f(context, locations.u_size),\n 'u_camera_to_center_distance': new Uniform1f(context, locations.u_camera_to_center_distance),\n 'u_pitch': new Uniform1f(context, locations.u_pitch),\n 'u_rotate_symbol': new Uniform1i(context, locations.u_rotate_symbol),\n 'u_aspect_ratio': new Uniform1f(context, locations.u_aspect_ratio),\n 'u_fade_change': new Uniform1f(context, locations.u_fade_change),\n 'u_matrix': new UniformMatrix4f(context, locations.u_matrix),\n 'u_label_plane_matrix': new UniformMatrix4f(context, locations.u_label_plane_matrix),\n 'u_coord_matrix': new UniformMatrix4f(context, locations.u_coord_matrix),\n 'u_is_text': new Uniform1i(context, locations.u_is_text),\n 'u_pitch_with_map': new Uniform1i(context, locations.u_pitch_with_map),\n 'u_texsize': new Uniform2f(context, locations.u_texsize),\n 'u_texsize_icon': new Uniform2f(context, locations.u_texsize_icon),\n 'u_texture': new Uniform1i(context, locations.u_texture),\n 'u_texture_icon': new Uniform1i(context, locations.u_texture_icon),\n 'u_gamma_scale': new Uniform1f(context, locations.u_gamma_scale),\n 'u_device_pixel_ratio': new Uniform1f(context, locations.u_device_pixel_ratio),\n 'u_is_halo': new Uniform1i(context, locations.u_is_halo)\n});\n\nconst symbolIconUniformValues = (\n functionType: string,\n size: ?{uSizeT: number, uSize: number},\n rotateInShader: boolean,\n pitchWithMap: boolean,\n painter: Painter,\n matrix: Float32Array,\n labelPlaneMatrix: Float32Array,\n glCoordMatrix: Float32Array,\n isText: boolean,\n texSize: [number, number]\n): UniformValues => {\n const transform = painter.transform;\n\n return {\n 'u_is_size_zoom_constant': +(functionType === 'constant' || functionType === 'source'),\n 'u_is_size_feature_constant': +(functionType === 'constant' || functionType === 'camera'),\n 'u_size_t': size ? size.uSizeT : 0,\n 'u_size': size ? size.uSize : 0,\n 'u_camera_to_center_distance': transform.cameraToCenterDistance,\n 'u_pitch': transform.pitch / 360 * 2 * Math.PI,\n 'u_rotate_symbol': +rotateInShader,\n 'u_aspect_ratio': transform.width / transform.height,\n 'u_fade_change': painter.options.fadeDuration ? painter.symbolFadeChange : 1,\n 'u_matrix': matrix,\n 'u_label_plane_matrix': labelPlaneMatrix,\n 'u_coord_matrix': glCoordMatrix,\n 'u_is_text': +isText,\n 'u_pitch_with_map': +pitchWithMap,\n 'u_texsize': texSize,\n 'u_texture': 0\n };\n};\n\nconst symbolSDFUniformValues = (\n functionType: string,\n size: ?{uSizeT: number, uSize: number},\n rotateInShader: boolean,\n pitchWithMap: boolean,\n painter: Painter,\n matrix: Float32Array,\n labelPlaneMatrix: Float32Array,\n glCoordMatrix: Float32Array,\n isText: boolean,\n texSize: [number, number],\n isHalo: boolean\n): UniformValues => {\n const transform = painter.transform;\n\n return extend(symbolIconUniformValues(functionType, size,\n rotateInShader, pitchWithMap, painter, matrix, labelPlaneMatrix,\n glCoordMatrix, isText, texSize), {\n 'u_gamma_scale': (pitchWithMap ? Math.cos(transform._pitch) * transform.cameraToCenterDistance : 1),\n 'u_device_pixel_ratio': browser.devicePixelRatio,\n 'u_is_halo': +isHalo\n });\n};\n\nconst symbolTextAndIconUniformValues = (\n functionType: string,\n size: ?{uSizeT: number, uSize: number},\n rotateInShader: boolean,\n pitchWithMap: boolean,\n painter: Painter,\n matrix: Float32Array,\n labelPlaneMatrix: Float32Array,\n glCoordMatrix: Float32Array,\n texSizeSDF: [number, number],\n texSizeIcon: [number, number]\n): UniformValues => {\n return extend(symbolSDFUniformValues(functionType, size,\n rotateInShader, pitchWithMap, painter, matrix, labelPlaneMatrix,\n glCoordMatrix, true, texSizeSDF, true), {\n 'u_texsize_icon': texSizeIcon,\n 'u_texture_icon': 1\n });\n};\n\nexport {symbolIconUniforms, symbolSDFUniforms, symbolIconUniformValues, symbolSDFUniformValues, symbolTextAndIconUniformValues, symbolTextAndIconUniforms};\n", "// @flow\n\nimport type Painter from './painter';\nimport type SourceCache from '../source/source_cache';\nimport type StyleLayer from '../style/style_layer';\nimport type {OverscaledTileID} from '../source/tile_id';\nimport type SymbolBucket from '../data/bucket/symbol_bucket';\nimport DepthMode from '../gl/depth_mode';\nimport StencilMode from '../gl/stencil_mode';\nimport CullFaceMode from '../gl/cull_face_mode';\nimport {collisionUniformValues, collisionCircleUniformValues} from './program/collision_program';\n\nimport {QuadTriangleArray, CollisionCircleLayoutArray} from '../data/array_types';\nimport {collisionCircleLayout} from '../data/bucket/symbol_attributes';\nimport SegmentVector from '../data/segment';\nimport {mat4} from 'gl-matrix';\nimport VertexBuffer from '../gl/vertex_buffer';\nimport IndexBuffer from '../gl/index_buffer';\n\nexport default drawCollisionDebug;\n\ntype TileBatch = {\n circleArray: Array,\n circleOffset: number,\n transform: mat4,\n invTransform: mat4\n};\n\nlet quadTriangles: ?QuadTriangleArray;\n\nfunction drawCollisionDebug(painter: Painter, sourceCache: SourceCache, layer: StyleLayer, coords: Array, translate: [number, number], translateAnchor: 'map' | 'viewport', isText: boolean) {\n const context = painter.context;\n const gl = context.gl;\n const program = painter.useProgram('collisionBox');\n const tileBatches: Array = [];\n let circleCount = 0;\n let circleOffset = 0;\n\n for (let i = 0; i < coords.length; i++) {\n const coord = coords[i];\n const tile = sourceCache.getTile(coord);\n const bucket: ?SymbolBucket = (tile.getBucket(layer): any);\n if (!bucket) continue;\n let posMatrix = coord.posMatrix;\n if (translate[0] !== 0 || translate[1] !== 0) {\n posMatrix = painter.translatePosMatrix(coord.posMatrix, tile, translate, translateAnchor);\n }\n const buffers = isText ? bucket.textCollisionBox : bucket.iconCollisionBox;\n // Get collision circle data of this bucket\n const circleArray: Array = bucket.collisionCircleArray;\n if (circleArray.length > 0) {\n // We need to know the projection matrix that was used for projecting collision circles to the screen.\n // This might vary between buckets as the symbol placement is a continous process. This matrix is\n // required for transforming points from previous screen space to the current one\n const invTransform = mat4.create();\n const transform = posMatrix;\n\n mat4.mul(invTransform, bucket.placementInvProjMatrix, painter.transform.glCoordMatrix);\n mat4.mul(invTransform, invTransform, bucket.placementViewportMatrix);\n\n tileBatches.push({\n circleArray,\n circleOffset,\n transform,\n invTransform\n });\n\n circleCount += circleArray.length / 4; // 4 values per circle\n circleOffset = circleCount;\n }\n if (!buffers) continue;\n program.draw(context, gl.LINES,\n DepthMode.disabled, StencilMode.disabled,\n painter.colorModeForRenderPass(),\n CullFaceMode.disabled,\n collisionUniformValues(\n posMatrix,\n painter.transform,\n tile),\n layer.id, buffers.layoutVertexBuffer, buffers.indexBuffer,\n buffers.segments, null, painter.transform.zoom, null, null,\n buffers.collisionVertexBuffer);\n }\n\n if (!isText || !tileBatches.length) {\n return;\n }\n\n // Render collision circles\n const circleProgram = painter.useProgram('collisionCircle');\n\n // Construct vertex data\n const vertexData = new CollisionCircleLayoutArray();\n vertexData.resize(circleCount * 4);\n vertexData._trim();\n\n let vertexOffset = 0;\n\n for (const batch of tileBatches) {\n for (let i = 0; i < batch.circleArray.length / 4; i++) {\n const circleIdx = i * 4;\n const x = batch.circleArray[circleIdx + 0];\n const y = batch.circleArray[circleIdx + 1];\n const radius = batch.circleArray[circleIdx + 2];\n const collision = batch.circleArray[circleIdx + 3];\n\n // 4 floats per vertex, 4 vertices per quad\n vertexData.emplace(vertexOffset++, x, y, radius, collision, 0);\n vertexData.emplace(vertexOffset++, x, y, radius, collision, 1);\n vertexData.emplace(vertexOffset++, x, y, radius, collision, 2);\n vertexData.emplace(vertexOffset++, x, y, radius, collision, 3);\n }\n }\n if (!quadTriangles || quadTriangles.length < circleCount * 2) {\n quadTriangles = createQuadTriangles(circleCount);\n }\n\n const indexBuffer: IndexBuffer = context.createIndexBuffer(quadTriangles, true);\n const vertexBuffer: VertexBuffer = context.createVertexBuffer(vertexData, collisionCircleLayout.members, true);\n\n // Render batches\n for (const batch of tileBatches) {\n const uniforms = collisionCircleUniformValues(\n batch.transform,\n batch.invTransform,\n painter.transform\n );\n\n circleProgram.draw(\n context,\n gl.TRIANGLES,\n DepthMode.disabled,\n StencilMode.disabled,\n painter.colorModeForRenderPass(),\n CullFaceMode.disabled,\n uniforms,\n layer.id,\n vertexBuffer,\n indexBuffer,\n SegmentVector.simpleSegment(0, batch.circleOffset * 2, batch.circleArray.length, batch.circleArray.length / 2),\n null,\n painter.transform.zoom,\n null,\n null,\n null);\n }\n\n vertexBuffer.destroy();\n indexBuffer.destroy();\n}\n\nfunction createQuadTriangles(quadCount: number): QuadTriangleArray {\n const triCount = quadCount * 2;\n const array = new QuadTriangleArray();\n\n array.resize(triCount);\n array._trim();\n\n // Two triangles and 4 vertices per quad.\n for (let i = 0; i < triCount; i++) {\n const idx = i * 6;\n\n array.uint16[idx + 0] = i * 4 + 0;\n array.uint16[idx + 1] = i * 4 + 1;\n array.uint16[idx + 2] = i * 4 + 2;\n array.uint16[idx + 3] = i * 4 + 2;\n array.uint16[idx + 4] = i * 4 + 3;\n array.uint16[idx + 5] = i * 4 + 0;\n }\n\n return array;\n}\n", "// @flow\n\nimport {bgPatternUniformValues} from './pattern';\nimport {\n Uniform1i,\n Uniform1f,\n Uniform2f,\n UniformColor,\n UniformMatrix4f\n} from '../uniform_binding';\nimport {extend} from '../../util/util';\n\nimport type Painter from '../painter';\nimport type {UniformValues, UniformLocations} from '../uniform_binding';\nimport type Context from '../../gl/context';\nimport type Color from '../../style-spec/util/color';\nimport type {CrossFaded} from '../../style/properties';\nimport type {CrossfadeParameters} from '../../style/evaluation_parameters';\nimport type {OverscaledTileID} from '../../source/tile_id';\nimport type ResolvedImage from '../../style-spec/expression/types/resolved_image';\n\nexport type BackgroundUniformsType = {|\n 'u_matrix': UniformMatrix4f,\n 'u_opacity': Uniform1f,\n 'u_color': UniformColor\n|};\n\nexport type BackgroundPatternUniformsType = {|\n 'u_matrix': UniformMatrix4f,\n 'u_opacity': Uniform1f,\n // pattern uniforms:\n 'u_image': Uniform1i,\n 'u_pattern_tl_a': Uniform2f,\n 'u_pattern_br_a': Uniform2f,\n 'u_pattern_tl_b': Uniform2f,\n 'u_pattern_br_b': Uniform2f,\n 'u_texsize': Uniform2f,\n 'u_mix': Uniform1f,\n 'u_pattern_size_a': Uniform2f,\n 'u_pattern_size_b': Uniform2f,\n 'u_scale_a': Uniform1f,\n 'u_scale_b': Uniform1f,\n 'u_pixel_coord_upper': Uniform2f,\n 'u_pixel_coord_lower': Uniform2f,\n 'u_tile_units_to_pixels': Uniform1f\n|};\n\nconst backgroundUniforms = (context: Context, locations: UniformLocations): BackgroundUniformsType => ({\n 'u_matrix': new UniformMatrix4f(context, locations.u_matrix),\n 'u_opacity': new Uniform1f(context, locations.u_opacity),\n 'u_color': new UniformColor(context, locations.u_color)\n});\n\nconst backgroundPatternUniforms = (context: Context, locations: UniformLocations): BackgroundPatternUniformsType => ({\n 'u_matrix': new UniformMatrix4f(context, locations.u_matrix),\n 'u_opacity': new Uniform1f(context, locations.u_opacity),\n 'u_image': new Uniform1i(context, locations.u_image),\n 'u_pattern_tl_a': new Uniform2f(context, locations.u_pattern_tl_a),\n 'u_pattern_br_a': new Uniform2f(context, locations.u_pattern_br_a),\n 'u_pattern_tl_b': new Uniform2f(context, locations.u_pattern_tl_b),\n 'u_pattern_br_b': new Uniform2f(context, locations.u_pattern_br_b),\n 'u_texsize': new Uniform2f(context, locations.u_texsize),\n 'u_mix': new Uniform1f(context, locations.u_mix),\n 'u_pattern_size_a': new Uniform2f(context, locations.u_pattern_size_a),\n 'u_pattern_size_b': new Uniform2f(context, locations.u_pattern_size_b),\n 'u_scale_a': new Uniform1f(context, locations.u_scale_a),\n 'u_scale_b': new Uniform1f(context, locations.u_scale_b),\n 'u_pixel_coord_upper': new Uniform2f(context, locations.u_pixel_coord_upper),\n 'u_pixel_coord_lower': new Uniform2f(context, locations.u_pixel_coord_lower),\n 'u_tile_units_to_pixels': new Uniform1f(context, locations.u_tile_units_to_pixels)\n});\n\nconst backgroundUniformValues = (\n matrix: Float32Array,\n opacity: number,\n color: Color\n): UniformValues => ({\n 'u_matrix': matrix,\n 'u_opacity': opacity,\n 'u_color': color\n});\n\nconst backgroundPatternUniformValues = (\n matrix: Float32Array,\n opacity: number,\n painter: Painter,\n image: CrossFaded,\n tile: {tileID: OverscaledTileID, tileSize: number},\n crossfade: CrossfadeParameters\n): UniformValues => extend(\n bgPatternUniformValues(image, crossfade, painter, tile),\n {\n 'u_matrix': matrix,\n 'u_opacity': opacity\n }\n);\n\nexport {\n backgroundUniforms,\n backgroundPatternUniforms,\n backgroundUniformValues,\n backgroundPatternUniformValues\n};\n", "// @flow\n\nimport {fillExtrusionUniforms, fillExtrusionPatternUniforms} from './fill_extrusion_program';\nimport {fillUniforms, fillPatternUniforms, fillOutlineUniforms, fillOutlinePatternUniforms} from './fill_program';\nimport {circleUniforms} from './circle_program';\nimport {collisionUniforms, collisionCircleUniforms} from './collision_program';\nimport {debugUniforms} from './debug_program';\nimport {clippingMaskUniforms} from './clipping_mask_program';\nimport {heatmapUniforms, heatmapTextureUniforms} from './heatmap_program';\nimport {hillshadeUniforms, hillshadePrepareUniforms} from './hillshade_program';\nimport {lineUniforms, lineGradientUniforms, linePatternUniforms, lineSDFUniforms} from './line_program';\nimport {rasterUniforms} from './raster_program';\nimport {symbolIconUniforms, symbolSDFUniforms, symbolTextAndIconUniforms} from './symbol_program';\nimport {backgroundUniforms, backgroundPatternUniforms} from './background_program';\n\nexport const programUniforms = {\n fillExtrusion: fillExtrusionUniforms,\n fillExtrusionPattern: fillExtrusionPatternUniforms,\n fill: fillUniforms,\n fillPattern: fillPatternUniforms,\n fillOutline: fillOutlineUniforms,\n fillOutlinePattern: fillOutlinePatternUniforms,\n circle: circleUniforms,\n collisionBox: collisionUniforms,\n collisionCircle: collisionCircleUniforms,\n debug: debugUniforms,\n clippingMask: clippingMaskUniforms,\n heatmap: heatmapUniforms,\n heatmapTexture: heatmapTextureUniforms,\n hillshade: hillshadeUniforms,\n hillshadePrepare: hillshadePrepareUniforms,\n line: lineUniforms,\n lineGradient: lineGradientUniforms,\n linePattern: linePatternUniforms,\n lineSDF: lineSDFUniforms,\n raster: rasterUniforms,\n symbolIcon: symbolIconUniforms,\n symbolSDF: symbolSDFUniforms,\n symbolTextAndIcon: symbolTextAndIconUniforms,\n background: backgroundUniforms,\n backgroundPattern: backgroundPatternUniforms\n};\n", "// @flow\n\nimport {mat4} from 'gl-matrix';\n\nimport {\n Uniform1i,\n Uniform1f,\n Uniform2f,\n UniformColor,\n UniformMatrix4f,\n Uniform4f\n} from '../uniform_binding';\nimport EXTENT from '../../data/extent';\nimport MercatorCoordinate from '../../geo/mercator_coordinate';\n\nimport type Context from '../../gl/context';\nimport type {UniformValues, UniformLocations} from '../uniform_binding';\nimport type Tile from '../../source/tile';\nimport type Painter from '../painter';\nimport type HillshadeStyleLayer from '../../style/style_layer/hillshade_style_layer';\nimport type DEMData from '../../data/dem_data';\nimport type {OverscaledTileID} from '../../source/tile_id';\n\nexport type HillshadeUniformsType = {|\n 'u_matrix': UniformMatrix4f,\n 'u_image': Uniform1i,\n 'u_latrange': Uniform2f,\n 'u_light': Uniform2f,\n 'u_shadow': UniformColor,\n 'u_highlight': UniformColor,\n 'u_accent': UniformColor\n|};\n\nexport type HillshadePrepareUniformsType = {|\n 'u_matrix': UniformMatrix4f,\n 'u_image': Uniform1i,\n 'u_dimension': Uniform2f,\n 'u_zoom': Uniform1f,\n 'u_unpack': Uniform4f\n|};\n\nconst hillshadeUniforms = (context: Context, locations: UniformLocations): HillshadeUniformsType => ({\n 'u_matrix': new UniformMatrix4f(context, locations.u_matrix),\n 'u_image': new Uniform1i(context, locations.u_image),\n 'u_latrange': new Uniform2f(context, locations.u_latrange),\n 'u_light': new Uniform2f(context, locations.u_light),\n 'u_shadow': new UniformColor(context, locations.u_shadow),\n 'u_highlight': new UniformColor(context, locations.u_highlight),\n 'u_accent': new UniformColor(context, locations.u_accent)\n});\n\nconst hillshadePrepareUniforms = (context: Context, locations: UniformLocations): HillshadePrepareUniformsType => ({\n 'u_matrix': new UniformMatrix4f(context, locations.u_matrix),\n 'u_image': new Uniform1i(context, locations.u_image),\n 'u_dimension': new Uniform2f(context, locations.u_dimension),\n 'u_zoom': new Uniform1f(context, locations.u_zoom),\n 'u_unpack': new Uniform4f(context, locations.u_unpack)\n});\n\nconst hillshadeUniformValues = (\n painter: Painter,\n tile: Tile,\n layer: HillshadeStyleLayer\n): UniformValues => {\n const shadow = layer.paint.get(\"hillshade-shadow-color\");\n const highlight = layer.paint.get(\"hillshade-highlight-color\");\n const accent = layer.paint.get(\"hillshade-accent-color\");\n\n let azimuthal = layer.paint.get('hillshade-illumination-direction') * (Math.PI / 180);\n // modify azimuthal angle by map rotation if light is anchored at the viewport\n if (layer.paint.get('hillshade-illumination-anchor') === 'viewport') {\n azimuthal -= painter.transform.angle;\n }\n const align = !painter.options.moving;\n return {\n 'u_matrix': painter.transform.calculatePosMatrix(tile.tileID.toUnwrapped(), align),\n 'u_image': 0,\n 'u_latrange': getTileLatRange(painter, tile.tileID),\n 'u_light': [layer.paint.get('hillshade-exaggeration'), azimuthal],\n 'u_shadow': shadow,\n 'u_highlight': highlight,\n 'u_accent': accent\n };\n};\n\nconst hillshadeUniformPrepareValues = (\n tileID: OverscaledTileID, dem: DEMData\n): UniformValues => {\n\n const stride = dem.stride;\n const matrix = mat4.create();\n // Flip rendering at y axis.\n mat4.ortho(matrix, 0, EXTENT, -EXTENT, 0, 0, 1);\n mat4.translate(matrix, matrix, [0, -EXTENT, 0]);\n\n return {\n 'u_matrix': matrix,\n 'u_image': 1,\n 'u_dimension': [stride, stride],\n 'u_zoom': tileID.overscaledZ,\n 'u_unpack': dem.getUnpackVector()\n };\n};\n\nfunction getTileLatRange(painter: Painter, tileID: OverscaledTileID) {\n // for scaling the magnitude of a points slope by its latitude\n const tilesAtZoom = Math.pow(2, tileID.canonical.z);\n const y = tileID.canonical.y;\n return [\n new MercatorCoordinate(0, y / tilesAtZoom).toLngLat().lat,\n new MercatorCoordinate(0, (y + 1) / tilesAtZoom).toLngLat().lat];\n}\n\nexport {\n hillshadeUniforms,\n hillshadePrepareUniforms,\n hillshadeUniformValues,\n hillshadeUniformPrepareValues\n};\n", "// @flow\n\nimport Point from '@mapbox/point-geometry';\nimport drawCollisionDebug from './draw_collision_debug';\n\nimport SegmentVector from '../data/segment';\nimport pixelsToTileUnits from '../source/pixels_to_tile_units';\nimport * as symbolProjection from '../symbol/projection';\nimport * as symbolSize from '../symbol/symbol_size';\nimport {mat4} from 'gl-matrix';\nconst identityMat4 = mat4.identity(new Float32Array(16));\nimport StencilMode from '../gl/stencil_mode';\nimport DepthMode from '../gl/depth_mode';\nimport CullFaceMode from '../gl/cull_face_mode';\nimport {addDynamicAttributes} from '../data/bucket/symbol_bucket';\n\nimport {getAnchorAlignment, WritingMode} from '../symbol/shaping';\nimport ONE_EM from '../symbol/one_em';\nimport {evaluateVariableOffset} from '../symbol/symbol_layout';\n\nimport {\n symbolIconUniformValues,\n symbolSDFUniformValues,\n symbolTextAndIconUniformValues\n} from './program/symbol_program';\n\nimport type Painter from './painter';\nimport type SourceCache from '../source/source_cache';\nimport type SymbolStyleLayer from '../style/style_layer/symbol_style_layer';\nimport type SymbolBucket, {SymbolBuffers} from '../data/bucket/symbol_bucket';\nimport type Texture from '../render/texture';\nimport type {OverscaledTileID} from '../source/tile_id';\nimport type {UniformValues} from './uniform_binding';\nimport type {SymbolSDFUniformsType} from '../render/program/symbol_program';\nimport type {CrossTileID, VariableOffset} from '../symbol/placement';\n\nexport default drawSymbols;\n\ntype SymbolTileRenderState = {\n segments: SegmentVector,\n sortKey: number,\n state: {\n program: any,\n buffers: SymbolBuffers,\n uniformValues: any,\n atlasTexture: Texture,\n atlasTextureIcon: Texture | null,\n atlasInterpolation: any,\n atlasInterpolationIcon: any,\n isSDF: boolean,\n hasHalo: boolean\n }\n};\n\nfunction drawSymbols(painter: Painter, sourceCache: SourceCache, layer: SymbolStyleLayer, coords: Array, variableOffsets: {[_: CrossTileID]: VariableOffset}) {\n if (painter.renderPass !== 'translucent') return;\n\n // Disable the stencil test so that labels aren't clipped to tile boundaries.\n const stencilMode = StencilMode.disabled;\n const colorMode = painter.colorModeForRenderPass();\n const variablePlacement = layer.layout.get('text-variable-anchor');\n\n //Compute variable-offsets before painting since icons and text data positioning\n //depend on each other in this case.\n if (variablePlacement) {\n updateVariableAnchors(coords, painter, layer, sourceCache,\n layer.layout.get('text-rotation-alignment'),\n layer.layout.get('text-pitch-alignment'),\n variableOffsets\n );\n }\n\n if (layer.paint.get('icon-opacity').constantOr(1) !== 0) {\n drawLayerSymbols(painter, sourceCache, layer, coords, false,\n layer.paint.get('icon-translate'),\n layer.paint.get('icon-translate-anchor'),\n layer.layout.get('icon-rotation-alignment'),\n layer.layout.get('icon-pitch-alignment'),\n layer.layout.get('icon-keep-upright'),\n stencilMode, colorMode\n );\n }\n\n if (layer.paint.get('text-opacity').constantOr(1) !== 0) {\n drawLayerSymbols(painter, sourceCache, layer, coords, true,\n layer.paint.get('text-translate'),\n layer.paint.get('text-translate-anchor'),\n layer.layout.get('text-rotation-alignment'),\n layer.layout.get('text-pitch-alignment'),\n layer.layout.get('text-keep-upright'),\n stencilMode, colorMode\n );\n }\n\n if (sourceCache.map.showCollisionBoxes) {\n drawCollisionDebug(painter, sourceCache, layer, coords, layer.paint.get('text-translate'),\n layer.paint.get('text-translate-anchor'), true);\n drawCollisionDebug(painter, sourceCache, layer, coords, layer.paint.get('icon-translate'),\n layer.paint.get('icon-translate-anchor'), false);\n }\n}\n\nfunction calculateVariableRenderShift(anchor, width, height, textOffset, textBoxScale, renderTextSize): Point {\n const {horizontalAlign, verticalAlign} = getAnchorAlignment(anchor);\n const shiftX = -(horizontalAlign - 0.5) * width;\n const shiftY = -(verticalAlign - 0.5) * height;\n const variableOffset = evaluateVariableOffset(anchor, textOffset);\n return new Point(\n (shiftX / textBoxScale + variableOffset[0]) * renderTextSize,\n (shiftY / textBoxScale + variableOffset[1]) * renderTextSize\n );\n}\n\nfunction updateVariableAnchors(coords, painter, layer, sourceCache, rotationAlignment, pitchAlignment, variableOffsets) {\n const tr = painter.transform;\n const rotateWithMap = rotationAlignment === 'map';\n const pitchWithMap = pitchAlignment === 'map';\n\n for (const coord of coords) {\n const tile = sourceCache.getTile(coord);\n const bucket: SymbolBucket = (tile.getBucket(layer): any);\n if (!bucket || !bucket.text || !bucket.text.segments.get().length) continue;\n\n const sizeData = bucket.textSizeData;\n const size = symbolSize.evaluateSizeForZoom(sizeData, tr.zoom);\n\n const pixelToTileScale = pixelsToTileUnits(tile, 1, painter.transform.zoom);\n const labelPlaneMatrix = symbolProjection.getLabelPlaneMatrix(coord.posMatrix, pitchWithMap, rotateWithMap, painter.transform, pixelToTileScale);\n const updateTextFitIcon = layer.layout.get('icon-text-fit') !== 'none' && bucket.hasIconData();\n\n if (size) {\n const tileScale = Math.pow(2, tr.zoom - tile.tileID.overscaledZ);\n updateVariableAnchorsForBucket(bucket, rotateWithMap, pitchWithMap, variableOffsets, symbolSize,\n tr, labelPlaneMatrix, coord.posMatrix, tileScale, size, updateTextFitIcon);\n }\n }\n}\n\nfunction updateVariableAnchorsForBucket(bucket, rotateWithMap, pitchWithMap, variableOffsets, symbolSize,\n transform, labelPlaneMatrix, posMatrix, tileScale, size, updateTextFitIcon) {\n const placedSymbols = bucket.text.placedSymbolArray;\n const dynamicTextLayoutVertexArray = bucket.text.dynamicLayoutVertexArray;\n const dynamicIconLayoutVertexArray = bucket.icon.dynamicLayoutVertexArray;\n const placedTextShifts = {};\n\n dynamicTextLayoutVertexArray.clear();\n for (let s = 0; s < placedSymbols.length; s++) {\n const symbol: any = placedSymbols.get(s);\n const skipOrientation = bucket.allowVerticalPlacement && !symbol.placedOrientation;\n const variableOffset = (!symbol.hidden && symbol.crossTileID && !skipOrientation) ? variableOffsets[symbol.crossTileID] : null;\n\n if (!variableOffset) {\n // These symbols are from a justification that is not being used, or a label that wasn't placed\n // so we don't need to do the extra math to figure out what incremental shift to apply.\n symbolProjection.hideGlyphs(symbol.numGlyphs, dynamicTextLayoutVertexArray);\n } else {\n const tileAnchor = new Point(symbol.anchorX, symbol.anchorY);\n const projectedAnchor = symbolProjection.project(tileAnchor, pitchWithMap ? posMatrix : labelPlaneMatrix);\n const perspectiveRatio = symbolProjection.getPerspectiveRatio(transform.cameraToCenterDistance, projectedAnchor.signedDistanceFromCamera);\n let renderTextSize = symbolSize.evaluateSizeForFeature(bucket.textSizeData, size, symbol) * perspectiveRatio / ONE_EM;\n if (pitchWithMap) {\n // Go from size in pixels to equivalent size in tile units\n renderTextSize *= bucket.tilePixelRatio / tileScale;\n }\n\n const {width, height, anchor, textOffset, textBoxScale} = variableOffset;\n\n const shift = calculateVariableRenderShift(\n anchor, width, height, textOffset, textBoxScale, renderTextSize);\n\n // Usual case is that we take the projected anchor and add the pixel-based shift\n // calculated above. In the (somewhat weird) case of pitch-aligned text, we add an equivalent\n // tile-unit based shift to the anchor before projecting to the label plane.\n const shiftedAnchor = pitchWithMap ?\n symbolProjection.project(tileAnchor.add(shift), labelPlaneMatrix).point :\n projectedAnchor.point.add(rotateWithMap ?\n shift.rotate(-transform.angle) :\n shift);\n\n const angle = (bucket.allowVerticalPlacement && symbol.placedOrientation === WritingMode.vertical) ? Math.PI / 2 : 0;\n for (let g = 0; g < symbol.numGlyphs; g++) {\n addDynamicAttributes(dynamicTextLayoutVertexArray, shiftedAnchor, angle);\n }\n //Only offset horizontal text icons\n if (updateTextFitIcon && symbol.associatedIconIndex >= 0) {\n placedTextShifts[symbol.associatedIconIndex] = {shiftedAnchor, angle};\n }\n }\n }\n\n if (updateTextFitIcon) {\n dynamicIconLayoutVertexArray.clear();\n const placedIcons = bucket.icon.placedSymbolArray;\n for (let i = 0; i < placedIcons.length; i++) {\n const placedIcon = placedIcons.get(i);\n if (placedIcon.hidden) {\n symbolProjection.hideGlyphs(placedIcon.numGlyphs, dynamicIconLayoutVertexArray);\n } else {\n const shift = placedTextShifts[i];\n if (!shift) {\n symbolProjection.hideGlyphs(placedIcon.numGlyphs, dynamicIconLayoutVertexArray);\n } else {\n for (let g = 0; g < placedIcon.numGlyphs; g++) {\n addDynamicAttributes(dynamicIconLayoutVertexArray, shift.shiftedAnchor, shift.angle);\n }\n }\n }\n }\n bucket.icon.dynamicLayoutVertexBuffer.updateData(dynamicIconLayoutVertexArray);\n }\n bucket.text.dynamicLayoutVertexBuffer.updateData(dynamicTextLayoutVertexArray);\n}\n\nfunction getSymbolProgramName(isSDF: boolean, isText: boolean, bucket: SymbolBucket) {\n if (bucket.iconsInText && isText) {\n return 'symbolTextAndIcon';\n } else if (isSDF) {\n return 'symbolSDF';\n } else {\n return 'symbolIcon';\n }\n}\n\nfunction drawLayerSymbols(painter, sourceCache, layer, coords, isText, translate, translateAnchor,\n rotationAlignment, pitchAlignment, keepUpright, stencilMode, colorMode) {\n\n const context = painter.context;\n const gl = context.gl;\n const tr = painter.transform;\n\n const rotateWithMap = rotationAlignment === 'map';\n const pitchWithMap = pitchAlignment === 'map';\n const alongLine = rotateWithMap && layer.layout.get('symbol-placement') !== 'point';\n // Line label rotation happens in `updateLineLabels`\n // Pitched point labels are automatically rotated by the labelPlaneMatrix projection\n // Unpitched point labels need to have their rotation applied after projection\n const rotateInShader = rotateWithMap && !pitchWithMap && !alongLine;\n\n const hasSortKey = layer.layout.get('symbol-sort-key').constantOr(1) !== undefined;\n let sortFeaturesByKey = false;\n\n const depthMode = painter.depthModeForSublayer(0, DepthMode.ReadOnly);\n\n const variablePlacement = layer.layout.get('text-variable-anchor');\n\n const tileRenderState: Array = [];\n\n for (const coord of coords) {\n const tile = sourceCache.getTile(coord);\n const bucket: SymbolBucket = (tile.getBucket(layer): any);\n if (!bucket) continue;\n const buffers = isText ? bucket.text : bucket.icon;\n if (!buffers || !buffers.segments.get().length) continue;\n const programConfiguration = buffers.programConfigurations.get(layer.id);\n\n const isSDF = isText || bucket.sdfIcons;\n\n const sizeData = isText ? bucket.textSizeData : bucket.iconSizeData;\n const transformed = pitchWithMap || tr.pitch !== 0;\n\n const program = painter.useProgram(getSymbolProgramName(isSDF, isText, bucket), programConfiguration);\n const size = symbolSize.evaluateSizeForZoom(sizeData, tr.zoom);\n\n let texSize: [number, number];\n let texSizeIcon: [number, number] = [0, 0];\n let atlasTexture;\n let atlasInterpolation;\n let atlasTextureIcon = null;\n let atlasInterpolationIcon;\n if (isText) {\n atlasTexture = tile.glyphAtlasTexture;\n atlasInterpolation = gl.LINEAR;\n texSize = tile.glyphAtlasTexture.size;\n if (bucket.iconsInText) {\n texSizeIcon = tile.imageAtlasTexture.size;\n atlasTextureIcon = tile.imageAtlasTexture;\n const zoomDependentSize = sizeData.kind === 'composite' || sizeData.kind === 'camera';\n atlasInterpolationIcon = transformed || painter.options.rotating || painter.options.zooming || zoomDependentSize ? gl.LINEAR : gl.NEAREST;\n }\n } else {\n const iconScaled = layer.layout.get('icon-size').constantOr(0) !== 1 || bucket.iconsNeedLinear;\n atlasTexture = tile.imageAtlasTexture;\n atlasInterpolation = isSDF || painter.options.rotating || painter.options.zooming || iconScaled || transformed ?\n gl.LINEAR :\n gl.NEAREST;\n texSize = tile.imageAtlasTexture.size;\n }\n\n const s = pixelsToTileUnits(tile, 1, painter.transform.zoom);\n const labelPlaneMatrix = symbolProjection.getLabelPlaneMatrix(coord.posMatrix, pitchWithMap, rotateWithMap, painter.transform, s);\n const glCoordMatrix = symbolProjection.getGlCoordMatrix(coord.posMatrix, pitchWithMap, rotateWithMap, painter.transform, s);\n\n const hasVariableAnchors = variablePlacement && bucket.hasTextData();\n const updateTextFitIcon = layer.layout.get('icon-text-fit') !== 'none' &&\n hasVariableAnchors &&\n bucket.hasIconData();\n\n if (alongLine) {\n symbolProjection.updateLineLabels(bucket, coord.posMatrix, painter, isText, labelPlaneMatrix, glCoordMatrix, pitchWithMap, keepUpright);\n }\n\n const matrix = painter.translatePosMatrix(coord.posMatrix, tile, translate, translateAnchor),\n uLabelPlaneMatrix = (alongLine || (isText && variablePlacement) || updateTextFitIcon) ? identityMat4 : labelPlaneMatrix,\n uglCoordMatrix = painter.translatePosMatrix(glCoordMatrix, tile, translate, translateAnchor, true);\n\n const hasHalo = isSDF && layer.paint.get(isText ? 'text-halo-width' : 'icon-halo-width').constantOr(1) !== 0;\n\n let uniformValues;\n if (isSDF) {\n if (!bucket.iconsInText) {\n uniformValues = symbolSDFUniformValues(sizeData.kind,\n size, rotateInShader, pitchWithMap, painter, matrix,\n uLabelPlaneMatrix, uglCoordMatrix, isText, texSize, true);\n } else {\n uniformValues = symbolTextAndIconUniformValues(sizeData.kind,\n size, rotateInShader, pitchWithMap, painter, matrix,\n uLabelPlaneMatrix, uglCoordMatrix, texSize, texSizeIcon);\n }\n } else {\n uniformValues = symbolIconUniformValues(sizeData.kind,\n size, rotateInShader, pitchWithMap, painter, matrix,\n uLabelPlaneMatrix, uglCoordMatrix, isText, texSize);\n }\n\n const state = {\n program,\n buffers,\n uniformValues,\n atlasTexture,\n atlasTextureIcon,\n atlasInterpolation,\n atlasInterpolationIcon,\n isSDF,\n hasHalo\n };\n\n if (hasSortKey && bucket.canOverlap) {\n sortFeaturesByKey = true;\n const oldSegments = buffers.segments.get();\n for (const segment of oldSegments) {\n tileRenderState.push({\n segments: new SegmentVector([segment]),\n sortKey: ((segment.sortKey: any): number),\n state\n });\n }\n } else {\n tileRenderState.push({\n segments: buffers.segments,\n sortKey: 0,\n state\n });\n }\n }\n\n if (sortFeaturesByKey) {\n tileRenderState.sort((a, b) => a.sortKey - b.sortKey);\n }\n\n for (const segmentState of tileRenderState) {\n const state = segmentState.state;\n\n context.activeTexture.set(gl.TEXTURE0);\n state.atlasTexture.bind(state.atlasInterpolation, gl.CLAMP_TO_EDGE);\n if (state.atlasTextureIcon) {\n context.activeTexture.set(gl.TEXTURE1);\n if (state.atlasTextureIcon) {\n state.atlasTextureIcon.bind(state.atlasInterpolationIcon, gl.CLAMP_TO_EDGE);\n }\n }\n\n if (state.isSDF) {\n const uniformValues = ((state.uniformValues: any): UniformValues);\n if (state.hasHalo) {\n uniformValues['u_is_halo'] = 1;\n drawSymbolElements(state.buffers, segmentState.segments, layer, painter, state.program, depthMode, stencilMode, colorMode, uniformValues);\n }\n uniformValues['u_is_halo'] = 0;\n }\n drawSymbolElements(state.buffers, segmentState.segments, layer, painter, state.program, depthMode, stencilMode, colorMode, state.uniformValues);\n }\n}\n\nfunction drawSymbolElements(buffers, segments, layer, painter, program, depthMode, stencilMode, colorMode, uniformValues) {\n const context = painter.context;\n const gl = context.gl;\n program.draw(context, gl.TRIANGLES, depthMode, stencilMode, colorMode, CullFaceMode.disabled,\n uniformValues, layer.id, buffers.layoutVertexBuffer,\n buffers.indexBuffer, segments, layer.paint,\n painter.transform.zoom, buffers.programConfigurations.get(layer.id),\n buffers.dynamicLayoutVertexBuffer, buffers.opacityVertexBuffer);\n}\n", "// @flow\n\nimport Color from '../style-spec/util/color';\nimport DepthMode from '../gl/depth_mode';\nimport CullFaceMode from '../gl/cull_face_mode';\nimport {\n fillUniformValues,\n fillPatternUniformValues,\n fillOutlineUniformValues,\n fillOutlinePatternUniformValues\n} from './program/fill_program';\n\nimport type Painter from './painter';\nimport type SourceCache from '../source/source_cache';\nimport type FillStyleLayer from '../style/style_layer/fill_style_layer';\nimport type FillBucket from '../data/bucket/fill_bucket';\nimport type {OverscaledTileID} from '../source/tile_id';\n\nexport default drawFill;\n\nfunction drawFill(painter: Painter, sourceCache: SourceCache, layer: FillStyleLayer, coords: Array) {\n const color = layer.paint.get('fill-color');\n const opacity = layer.paint.get('fill-opacity');\n\n if (opacity.constantOr(1) === 0) {\n return;\n }\n\n const colorMode = painter.colorModeForRenderPass();\n\n const pattern = layer.paint.get('fill-pattern');\n const pass = painter.opaquePassEnabledForLayer() &&\n (!pattern.constantOr((1: any)) &&\n color.constantOr(Color.transparent).a === 1 &&\n opacity.constantOr(0) === 1) ? 'opaque' : 'translucent';\n\n // Draw fill\n if (painter.renderPass === pass) {\n const depthMode = painter.depthModeForSublayer(\n 1, painter.renderPass === 'opaque' ? DepthMode.ReadWrite : DepthMode.ReadOnly);\n drawFillTiles(painter, sourceCache, layer, coords, depthMode, colorMode, false);\n }\n\n // Draw stroke\n if (painter.renderPass === 'translucent' && layer.paint.get('fill-antialias')) {\n\n // If we defined a different color for the fill outline, we are\n // going to ignore the bits in 0x07 and just care about the global\n // clipping mask.\n // Otherwise, we only want to drawFill the antialiased parts that are\n // *outside* the current shape. This is important in case the fill\n // or stroke color is translucent. If we wouldn't clip to outside\n // the current shape, some pixels from the outline stroke overlapped\n // the (non-antialiased) fill.\n const depthMode = painter.depthModeForSublayer(\n layer.getPaintProperty('fill-outline-color') ? 2 : 0, DepthMode.ReadOnly);\n drawFillTiles(painter, sourceCache, layer, coords, depthMode, colorMode, true);\n }\n}\n\nfunction drawFillTiles(painter, sourceCache, layer, coords, depthMode, colorMode, isOutline) {\n const gl = painter.context.gl;\n\n const patternProperty = layer.paint.get('fill-pattern');\n const image = patternProperty && patternProperty.constantOr((1: any));\n const crossfade = layer.getCrossfadeParameters();\n let drawMode, programName, uniformValues, indexBuffer, segments;\n\n if (!isOutline) {\n programName = image ? 'fillPattern' : 'fill';\n drawMode = gl.TRIANGLES;\n } else {\n programName = image && !layer.getPaintProperty('fill-outline-color') ? 'fillOutlinePattern' : 'fillOutline';\n drawMode = gl.LINES;\n }\n\n for (const coord of coords) {\n const tile = sourceCache.getTile(coord);\n if (image && !tile.patternsLoaded()) continue;\n\n const bucket: ?FillBucket = (tile.getBucket(layer): any);\n if (!bucket) continue;\n\n const programConfiguration = bucket.programConfigurations.get(layer.id);\n const program = painter.useProgram(programName, programConfiguration);\n\n if (image) {\n painter.context.activeTexture.set(gl.TEXTURE0);\n tile.imageAtlasTexture.bind(gl.LINEAR, gl.CLAMP_TO_EDGE);\n programConfiguration.updatePaintBuffers(crossfade);\n }\n\n const constantPattern = patternProperty.constantOr(null);\n if (constantPattern && tile.imageAtlas) {\n const atlas = tile.imageAtlas;\n const posTo = atlas.patternPositions[constantPattern.to.toString()];\n const posFrom = atlas.patternPositions[constantPattern.from.toString()];\n if (posTo && posFrom) programConfiguration.setConstantPatternPositions(posTo, posFrom);\n }\n\n const tileMatrix = painter.translatePosMatrix(coord.posMatrix, tile,\n layer.paint.get('fill-translate'), layer.paint.get('fill-translate-anchor'));\n\n if (!isOutline) {\n indexBuffer = bucket.indexBuffer;\n segments = bucket.segments;\n uniformValues = image ?\n fillPatternUniformValues(tileMatrix, painter, crossfade, tile) :\n fillUniformValues(tileMatrix);\n } else {\n indexBuffer = bucket.indexBuffer2;\n segments = bucket.segments2;\n const drawingBufferSize = [gl.drawingBufferWidth, gl.drawingBufferHeight];\n uniformValues = (programName === 'fillOutlinePattern' && image) ?\n fillOutlinePatternUniformValues(tileMatrix, painter, crossfade, tile, drawingBufferSize) :\n fillOutlineUniformValues(tileMatrix, drawingBufferSize);\n }\n\n program.draw(painter.context, drawMode, depthMode,\n painter.stencilModeForClipping(coord), colorMode, CullFaceMode.disabled, uniformValues,\n layer.id, bucket.layoutVertexBuffer, indexBuffer, segments,\n layer.paint, painter.transform.zoom, programConfiguration);\n }\n}\n", "// @flow\n\nimport DepthMode from '../gl/depth_mode';\nimport StencilMode from '../gl/stencil_mode';\nimport ColorMode from '../gl/color_mode';\nimport CullFaceMode from '../gl/cull_face_mode';\nimport {\n fillExtrusionUniformValues,\n fillExtrusionPatternUniformValues,\n} from './program/fill_extrusion_program';\n\nimport type Painter from './painter';\nimport type SourceCache from '../source/source_cache';\nimport type FillExtrusionStyleLayer from '../style/style_layer/fill_extrusion_style_layer';\nimport type FillExtrusionBucket from '../data/bucket/fill_extrusion_bucket';\nimport type {OverscaledTileID} from '../source/tile_id';\n\nexport default draw;\n\nfunction draw(painter: Painter, source: SourceCache, layer: FillExtrusionStyleLayer, coords: Array) {\n const opacity = layer.paint.get('fill-extrusion-opacity');\n if (opacity === 0) {\n return;\n }\n\n if (painter.renderPass === 'translucent') {\n const depthMode = new DepthMode(painter.context.gl.LEQUAL, DepthMode.ReadWrite, painter.depthRangeFor3D);\n\n if (opacity === 1 && !layer.paint.get('fill-extrusion-pattern').constantOr((1: any))) {\n const colorMode = painter.colorModeForRenderPass();\n drawExtrusionTiles(painter, source, layer, coords, depthMode, StencilMode.disabled, colorMode);\n\n } else {\n // Draw transparent buildings in two passes so that only the closest surface is drawn.\n // First draw all the extrusions into only the depth buffer. No colors are drawn.\n drawExtrusionTiles(painter, source, layer, coords, depthMode,\n StencilMode.disabled,\n ColorMode.disabled);\n\n // Then draw all the extrusions a second type, only coloring fragments if they have the\n // same depth value as the closest fragment in the previous pass. Use the stencil buffer\n // to prevent the second draw in cases where we have coincident polygons.\n drawExtrusionTiles(painter, source, layer, coords, depthMode,\n painter.stencilModeFor3D(),\n painter.colorModeForRenderPass());\n }\n }\n}\n\nfunction drawExtrusionTiles(painter, source, layer, coords, depthMode, stencilMode, colorMode) {\n const context = painter.context;\n const gl = context.gl;\n const patternProperty = layer.paint.get('fill-extrusion-pattern');\n const image = patternProperty.constantOr((1: any));\n const crossfade = layer.getCrossfadeParameters();\n const opacity = layer.paint.get('fill-extrusion-opacity');\n\n for (const coord of coords) {\n const tile = source.getTile(coord);\n const bucket: ?FillExtrusionBucket = (tile.getBucket(layer): any);\n if (!bucket) continue;\n\n const programConfiguration = bucket.programConfigurations.get(layer.id);\n const program = painter.useProgram(image ? 'fillExtrusionPattern' : 'fillExtrusion', programConfiguration);\n\n if (image) {\n painter.context.activeTexture.set(gl.TEXTURE0);\n tile.imageAtlasTexture.bind(gl.LINEAR, gl.CLAMP_TO_EDGE);\n programConfiguration.updatePaintBuffers(crossfade);\n }\n const constantPattern = patternProperty.constantOr(null);\n if (constantPattern && tile.imageAtlas) {\n const atlas = tile.imageAtlas;\n const posTo = atlas.patternPositions[constantPattern.to.toString()];\n const posFrom = atlas.patternPositions[constantPattern.from.toString()];\n if (posTo && posFrom) programConfiguration.setConstantPatternPositions(posTo, posFrom);\n }\n\n const matrix = painter.translatePosMatrix(\n coord.posMatrix,\n tile,\n layer.paint.get('fill-extrusion-translate'),\n layer.paint.get('fill-extrusion-translate-anchor'));\n\n const shouldUseVerticalGradient = layer.paint.get('fill-extrusion-vertical-gradient');\n const uniformValues = image ?\n fillExtrusionPatternUniformValues(matrix, painter, shouldUseVerticalGradient, opacity, coord, crossfade, tile) :\n fillExtrusionUniformValues(matrix, painter, shouldUseVerticalGradient, opacity);\n\n program.draw(context, context.gl.TRIANGLES, depthMode, stencilMode, colorMode, CullFaceMode.backCCW,\n uniformValues, layer.id, bucket.layoutVertexBuffer, bucket.indexBuffer,\n bucket.segments, layer.paint, painter.transform.zoom,\n programConfiguration);\n }\n}\n", "// @flow\n\nimport Texture from './texture';\nimport StencilMode from '../gl/stencil_mode';\nimport DepthMode from '../gl/depth_mode';\nimport CullFaceMode from '../gl/cull_face_mode';\nimport {\n hillshadeUniformValues,\n hillshadeUniformPrepareValues\n} from './program/hillshade_program';\n\nimport type Painter from './painter';\nimport type SourceCache from '../source/source_cache';\nimport type HillshadeStyleLayer from '../style/style_layer/hillshade_style_layer';\nimport type {OverscaledTileID} from '../source/tile_id';\n\nexport default drawHillshade;\n\nfunction drawHillshade(painter: Painter, sourceCache: SourceCache, layer: HillshadeStyleLayer, tileIDs: Array) {\n if (painter.renderPass !== 'offscreen' && painter.renderPass !== 'translucent') return;\n\n const context = painter.context;\n\n const depthMode = painter.depthModeForSublayer(0, DepthMode.ReadOnly);\n const colorMode = painter.colorModeForRenderPass();\n\n const [stencilModes, coords] = painter.renderPass === 'translucent' ?\n painter.stencilConfigForOverlap(tileIDs) : [{}, tileIDs];\n\n for (const coord of coords) {\n const tile = sourceCache.getTile(coord);\n if (tile.needsHillshadePrepare && painter.renderPass === 'offscreen') {\n prepareHillshade(painter, tile, layer, depthMode, StencilMode.disabled, colorMode);\n } else if (painter.renderPass === 'translucent') {\n renderHillshade(painter, tile, layer, depthMode, stencilModes[coord.overscaledZ], colorMode);\n }\n }\n\n context.viewport.set([0, 0, painter.width, painter.height]);\n}\n\nfunction renderHillshade(painter, tile, layer, depthMode, stencilMode, colorMode) {\n const context = painter.context;\n const gl = context.gl;\n const fbo = tile.fbo;\n if (!fbo) return;\n\n const program = painter.useProgram('hillshade');\n\n context.activeTexture.set(gl.TEXTURE0);\n gl.bindTexture(gl.TEXTURE_2D, fbo.colorAttachment.get());\n\n const uniformValues = hillshadeUniformValues(painter, tile, layer);\n\n program.draw(context, gl.TRIANGLES, depthMode, stencilMode, colorMode, CullFaceMode.disabled,\n uniformValues, layer.id, painter.rasterBoundsBuffer,\n painter.quadTriangleIndexBuffer, painter.rasterBoundsSegments);\n}\n\n// hillshade rendering is done in two steps. the prepare step first calculates the slope of the terrain in the x and y\n// directions for each pixel, and saves those values to a framebuffer texture in the r and g channels.\nfunction prepareHillshade(painter, tile, layer, depthMode, stencilMode, colorMode) {\n const context = painter.context;\n const gl = context.gl;\n const dem = tile.dem;\n if (dem && dem.data) {\n const tileSize = dem.dim;\n const textureStride = dem.stride;\n\n const pixelData = dem.getPixels();\n context.activeTexture.set(gl.TEXTURE1);\n\n context.pixelStoreUnpackPremultiplyAlpha.set(false);\n tile.demTexture = tile.demTexture || painter.getTileTexture(textureStride);\n if (tile.demTexture) {\n const demTexture = tile.demTexture;\n demTexture.update(pixelData, {premultiply: false});\n demTexture.bind(gl.NEAREST, gl.CLAMP_TO_EDGE);\n } else {\n tile.demTexture = new Texture(context, pixelData, gl.RGBA, {premultiply: false});\n tile.demTexture.bind(gl.NEAREST, gl.CLAMP_TO_EDGE);\n }\n\n context.activeTexture.set(gl.TEXTURE0);\n\n let fbo = tile.fbo;\n\n if (!fbo) {\n const renderTexture = new Texture(context, {width: tileSize, height: tileSize, data: null}, gl.RGBA);\n renderTexture.bind(gl.LINEAR, gl.CLAMP_TO_EDGE);\n\n fbo = tile.fbo = context.createFramebuffer(tileSize, tileSize, true);\n fbo.colorAttachment.set(renderTexture.texture);\n }\n\n context.bindFramebuffer.set(fbo.framebuffer);\n context.viewport.set([0, 0, tileSize, tileSize]);\n\n painter.useProgram('hillshadePrepare').draw(context, gl.TRIANGLES,\n depthMode, stencilMode, colorMode, CullFaceMode.disabled,\n hillshadeUniformPrepareValues(tile.tileID, dem),\n layer.id, painter.rasterBoundsBuffer,\n painter.quadTriangleIndexBuffer, painter.rasterBoundsSegments);\n\n tile.needsHillshadePrepare = false;\n }\n}\n", "// @flow\n\nimport {clamp} from '../util/util';\n\nimport ImageSource from '../source/image_source';\nimport browser from '../util/browser';\nimport StencilMode from '../gl/stencil_mode';\nimport DepthMode from '../gl/depth_mode';\nimport CullFaceMode from '../gl/cull_face_mode';\nimport {rasterUniformValues} from './program/raster_program';\n\nimport type Painter from './painter';\nimport type SourceCache from '../source/source_cache';\nimport type RasterStyleLayer from '../style/style_layer/raster_style_layer';\nimport type {OverscaledTileID} from '../source/tile_id';\n\nexport default drawRaster;\n\nfunction drawRaster(painter: Painter, sourceCache: SourceCache, layer: RasterStyleLayer, tileIDs: Array) {\n if (painter.renderPass !== 'translucent') return;\n if (layer.paint.get('raster-opacity') === 0) return;\n if (!tileIDs.length) return;\n\n const context = painter.context;\n const gl = context.gl;\n const source = sourceCache.getSource();\n const program = painter.useProgram('raster');\n\n const colorMode = painter.colorModeForRenderPass();\n\n const [stencilModes, coords] = source instanceof ImageSource ? [{}, tileIDs] :\n painter.stencilConfigForOverlap(tileIDs);\n\n const minTileZ = coords[coords.length - 1].overscaledZ;\n\n const align = !painter.options.moving;\n for (const coord of coords) {\n // Set the lower zoom level to sublayer 0, and higher zoom levels to higher sublayers\n // Use gl.LESS to prevent double drawing in areas where tiles overlap.\n const depthMode = painter.depthModeForSublayer(coord.overscaledZ - minTileZ,\n layer.paint.get('raster-opacity') === 1 ? DepthMode.ReadWrite : DepthMode.ReadOnly, gl.LESS);\n\n const tile = sourceCache.getTile(coord);\n const posMatrix = painter.transform.calculatePosMatrix(coord.toUnwrapped(), align);\n\n tile.registerFadeDuration(layer.paint.get('raster-fade-duration'));\n\n const parentTile = sourceCache.findLoadedParent(coord, 0),\n fade = getFadeValues(tile, parentTile, sourceCache, layer, painter.transform);\n\n let parentScaleBy, parentTL;\n\n const textureFilter = layer.paint.get('raster-resampling') === 'nearest' ? gl.NEAREST : gl.LINEAR;\n\n context.activeTexture.set(gl.TEXTURE0);\n tile.texture.bind(textureFilter, gl.CLAMP_TO_EDGE, gl.LINEAR_MIPMAP_NEAREST);\n\n context.activeTexture.set(gl.TEXTURE1);\n\n if (parentTile) {\n parentTile.texture.bind(textureFilter, gl.CLAMP_TO_EDGE, gl.LINEAR_MIPMAP_NEAREST);\n parentScaleBy = Math.pow(2, parentTile.tileID.overscaledZ - tile.tileID.overscaledZ);\n parentTL = [tile.tileID.canonical.x * parentScaleBy % 1, tile.tileID.canonical.y * parentScaleBy % 1];\n\n } else {\n tile.texture.bind(textureFilter, gl.CLAMP_TO_EDGE, gl.LINEAR_MIPMAP_NEAREST);\n }\n\n const uniformValues = rasterUniformValues(posMatrix, parentTL || [0, 0], parentScaleBy || 1, fade, layer);\n\n if (source instanceof ImageSource) {\n program.draw(context, gl.TRIANGLES, depthMode, StencilMode.disabled, colorMode, CullFaceMode.disabled,\n uniformValues, layer.id, source.boundsBuffer,\n painter.quadTriangleIndexBuffer, source.boundsSegments);\n } else {\n program.draw(context, gl.TRIANGLES, depthMode, stencilModes[coord.overscaledZ], colorMode, CullFaceMode.disabled,\n uniformValues, layer.id, painter.rasterBoundsBuffer,\n painter.quadTriangleIndexBuffer, painter.rasterBoundsSegments);\n }\n }\n}\n\nfunction getFadeValues(tile, parentTile, sourceCache, layer, transform) {\n const fadeDuration = layer.paint.get('raster-fade-duration');\n\n if (fadeDuration > 0) {\n const now = browser.now();\n const sinceTile = (now - tile.timeAdded) / fadeDuration;\n const sinceParent = parentTile ? (now - parentTile.timeAdded) / fadeDuration : -1;\n\n const source = sourceCache.getSource();\n const idealZ = transform.coveringZoomLevel({\n tileSize: source.tileSize,\n roundZoom: source.roundZoom\n });\n\n // if no parent or parent is older, fade in; if parent is younger, fade out\n const fadeIn = !parentTile || Math.abs(parentTile.tileID.overscaledZ - idealZ) > Math.abs(tile.tileID.overscaledZ - idealZ);\n\n const childOpacity = (fadeIn && tile.refreshedUponExpiration) ? 1 : clamp(fadeIn ? sinceTile : 1 - sinceParent, 0, 1);\n\n // we don't crossfade tiles that were just refreshed upon expiring:\n // once they're old enough to pass the crossfading threshold\n // (fadeDuration), unset the `refreshedUponExpiration` flag so we don't\n // incorrectly fail to crossfade them when zooming\n if (tile.refreshedUponExpiration && sinceTile >= 1) tile.refreshedUponExpiration = false;\n\n if (parentTile) {\n return {\n opacity: 1,\n mix: 1 - childOpacity\n };\n } else {\n return {\n opacity: childOpacity,\n mix: 0\n };\n }\n } else {\n return {\n opacity: 1,\n mix: 0\n };\n }\n}\n", "// @flow\n\nimport DepthMode from '../gl/depth_mode';\nimport StencilMode from '../gl/stencil_mode';\nimport CullFaceMode from '../gl/cull_face_mode';\nimport {debugUniformValues} from './program/debug_program';\nimport Color from '../style-spec/util/color';\nimport ColorMode from '../gl/color_mode';\nimport browser from '../util/browser';\n\nimport type Painter from './painter';\nimport type SourceCache from '../source/source_cache';\nimport type {OverscaledTileID} from '../source/tile_id';\n\nexport default drawDebug;\n\nconst topColor = new Color(1, 0, 0, 1);\nconst btmColor = new Color(0, 1, 0, 1);\nconst leftColor = new Color(0, 0, 1, 1);\nconst rightColor = new Color(1, 0, 1, 1);\nconst centerColor = new Color(0, 1, 1, 1);\n\nexport function drawDebugPadding(painter: Painter) {\n const padding = painter.transform.padding;\n const lineWidth = 3;\n // Top\n drawHorizontalLine(painter, painter.transform.height - (padding.top || 0), lineWidth, topColor);\n // Bottom\n drawHorizontalLine(painter, padding.bottom || 0, lineWidth, btmColor);\n // Left\n drawVerticalLine(painter, padding.left || 0, lineWidth, leftColor);\n // Right\n drawVerticalLine(painter, painter.transform.width - (padding.right || 0), lineWidth, rightColor);\n // Center\n const center = painter.transform.centerPoint;\n drawCrosshair(painter, center.x, painter.transform.height - center.y, centerColor);\n}\n\nfunction drawCrosshair(painter: Painter, x: number, y: number, color: Color) {\n const size = 20;\n const lineWidth = 2;\n //Vertical line\n drawDebugSSRect(painter, x - lineWidth / 2, y - size / 2, lineWidth, size, color);\n //Horizontal line\n drawDebugSSRect(painter, x - size / 2, y - lineWidth / 2, size, lineWidth, color);\n}\n\nfunction drawHorizontalLine(painter: Painter, y: number, lineWidth: number, color: Color) {\n drawDebugSSRect(painter, 0, y + lineWidth / 2, painter.transform.width, lineWidth, color);\n}\n\nfunction drawVerticalLine(painter: Painter, x: number, lineWidth: number, color: Color) {\n drawDebugSSRect(painter, x - lineWidth / 2, 0, lineWidth, painter.transform.height, color);\n}\n\nfunction drawDebugSSRect(painter: Painter, x: number, y: number, width: number, height: number, color: Color) {\n const context = painter.context;\n const gl = context.gl;\n\n gl.enable(gl.SCISSOR_TEST);\n gl.scissor(x * browser.devicePixelRatio, y * browser.devicePixelRatio, width * browser.devicePixelRatio, height * browser.devicePixelRatio);\n context.clear({color});\n gl.disable(gl.SCISSOR_TEST);\n}\n\nfunction drawDebug(painter: Painter, sourceCache: SourceCache, coords: Array) {\n for (let i = 0; i < coords.length; i++) {\n drawDebugTile(painter, sourceCache, coords[i]);\n }\n}\n\nfunction drawDebugTile(painter, sourceCache, coord: OverscaledTileID) {\n const context = painter.context;\n const gl = context.gl;\n\n const posMatrix = coord.posMatrix;\n const program = painter.useProgram('debug');\n\n const depthMode = DepthMode.disabled;\n const stencilMode = StencilMode.disabled;\n const colorMode = painter.colorModeForRenderPass();\n const id = '$debug';\n\n context.activeTexture.set(gl.TEXTURE0);\n // Bind the empty texture for drawing outlines\n painter.emptyTexture.bind(gl.LINEAR, gl.CLAMP_TO_EDGE);\n\n program.draw(context, gl.LINE_STRIP, depthMode, stencilMode, colorMode, CullFaceMode.disabled,\n debugUniformValues(posMatrix, Color.red), id,\n painter.debugBuffer, painter.tileBorderIndexBuffer, painter.debugSegments);\n\n const tileRawData = sourceCache.getTileByID(coord.key).latestRawTileData;\n const tileByteLength = (tileRawData && tileRawData.byteLength) || 0;\n const tileSizeKb = Math.floor(tileByteLength / 1024);\n const tileSize = sourceCache.getTile(coord).tileSize;\n const scaleRatio = (512 / Math.min(tileSize, 512) * (coord.overscaledZ / painter.transform.zoom)) * 0.5;\n let tileIdText = coord.canonical.toString();\n if (coord.overscaledZ !== coord.canonical.z) {\n tileIdText += ` => ${coord.overscaledZ}`;\n }\n const tileLabel = `${tileIdText} ${tileSizeKb}kb`;\n drawTextToOverlay(painter, tileLabel);\n\n program.draw(context, gl.TRIANGLES, depthMode, stencilMode, ColorMode.alphaBlended, CullFaceMode.disabled,\n debugUniformValues(posMatrix, Color.transparent, scaleRatio), id,\n painter.debugBuffer, painter.quadTriangleIndexBuffer, painter.debugSegments);\n}\n\nfunction drawTextToOverlay(painter: Painter, text: string) {\n painter.initDebugOverlayCanvas();\n const canvas = painter.debugOverlayCanvas;\n const gl = painter.context.gl;\n const ctx2d = painter.debugOverlayCanvas.getContext('2d');\n ctx2d.clearRect(0, 0, canvas.width, canvas.height);\n\n ctx2d.shadowColor = 'white';\n ctx2d.shadowBlur = 2;\n ctx2d.lineWidth = 1.5;\n ctx2d.strokeStyle = 'white';\n ctx2d.textBaseline = 'top';\n ctx2d.font = `bold ${36}px Open Sans, sans-serif`;\n ctx2d.fillText(text, 5, 5);\n ctx2d.strokeText(text, 5, 5);\n\n painter.debugOverlayTexture.update(canvas);\n painter.debugOverlayTexture.bind(gl.LINEAR, gl.CLAMP_TO_EDGE);\n}\n", "// @flow\n\nimport browser from '../util/browser';\nimport window from '../util/window';\n\nimport {mat4} from 'gl-matrix';\nimport SourceCache from '../source/source_cache';\nimport EXTENT from '../data/extent';\nimport pixelsToTileUnits from '../source/pixels_to_tile_units';\nimport SegmentVector from '../data/segment';\nimport {RasterBoundsArray, PosArray, TriangleIndexArray, LineStripIndexArray} from '../data/array_types';\nimport {values} from '../util/util';\nimport rasterBoundsAttributes from '../data/raster_bounds_attributes';\nimport posAttributes from '../data/pos_attributes';\nimport ProgramConfiguration from '../data/program_configuration';\nimport CrossTileSymbolIndex from '../symbol/cross_tile_symbol_index';\nimport * as shaders from '../shaders';\nimport Program from './program';\nimport {programUniforms} from './program/program_uniforms';\nimport Context from '../gl/context';\nimport DepthMode from '../gl/depth_mode';\nimport StencilMode from '../gl/stencil_mode';\nimport ColorMode from '../gl/color_mode';\nimport CullFaceMode from '../gl/cull_face_mode';\nimport Texture from './texture';\nimport {clippingMaskUniformValues} from './program/clipping_mask_program';\nimport Color from '../style-spec/util/color';\nimport symbol from './draw_symbol';\nimport circle from './draw_circle';\nimport heatmap from './draw_heatmap';\nimport line from './draw_line';\nimport fill from './draw_fill';\nimport fillExtrusion from './draw_fill_extrusion';\nimport hillshade from './draw_hillshade';\nimport raster from './draw_raster';\nimport background from './draw_background';\nimport debug, {drawDebugPadding} from './draw_debug';\nimport custom from './draw_custom';\n\nconst draw = {\n symbol,\n circle,\n heatmap,\n line,\n fill,\n 'fill-extrusion': fillExtrusion,\n hillshade,\n raster,\n background,\n debug,\n custom\n};\n\nimport type Transform from '../geo/transform';\nimport type Tile from '../source/tile';\nimport type {OverscaledTileID} from '../source/tile_id';\nimport type Style from '../style/style';\nimport type StyleLayer from '../style/style_layer';\nimport type {CrossFaded} from '../style/properties';\nimport type LineAtlas from './line_atlas';\nimport type ImageManager from './image_manager';\nimport type GlyphManager from './glyph_manager';\nimport type VertexBuffer from '../gl/vertex_buffer';\nimport type IndexBuffer from '../gl/index_buffer';\nimport type {DepthRangeType, DepthMaskType, DepthFuncType} from '../gl/types';\nimport type ResolvedImage from '../style-spec/expression/types/resolved_image';\n\nexport type RenderPass = 'offscreen' | 'opaque' | 'translucent';\n\ntype PainterOptions = {\n showOverdrawInspector: boolean,\n showTileBoundaries: boolean,\n showPadding: boolean,\n rotating: boolean,\n zooming: boolean,\n moving: boolean,\n gpuTiming: boolean,\n fadeDuration: number\n}\n\n/**\n * Initialize a new painter object.\n *\n * @param {Canvas} gl an experimental-webgl drawing context\n * @private\n */\nclass Painter {\n context: Context;\n transform: Transform;\n _tileTextures: {[_: number]: Array };\n numSublayers: number;\n depthEpsilon: number;\n emptyProgramConfiguration: ProgramConfiguration;\n width: number;\n height: number;\n tileExtentBuffer: VertexBuffer;\n tileExtentSegments: SegmentVector;\n debugBuffer: VertexBuffer;\n debugSegments: SegmentVector;\n rasterBoundsBuffer: VertexBuffer;\n rasterBoundsSegments: SegmentVector;\n viewportBuffer: VertexBuffer;\n viewportSegments: SegmentVector;\n quadTriangleIndexBuffer: IndexBuffer;\n tileBorderIndexBuffer: IndexBuffer;\n _tileClippingMaskIDs: {[_: string]: number };\n stencilClearMode: StencilMode;\n style: Style;\n options: PainterOptions;\n lineAtlas: LineAtlas;\n imageManager: ImageManager;\n glyphManager: GlyphManager;\n depthRangeFor3D: DepthRangeType;\n opaquePassCutoff: number;\n renderPass: RenderPass;\n currentLayer: number;\n currentStencilSource: ?string;\n nextStencilID: number;\n id: string;\n _showOverdrawInspector: boolean;\n cache: {[_: string]: Program<*> };\n crossTileSymbolIndex: CrossTileSymbolIndex;\n symbolFadeChange: number;\n gpuTimers: {[_: string]: any };\n emptyTexture: Texture;\n debugOverlayTexture: Texture;\n debugOverlayCanvas: HTMLCanvasElement;\n\n constructor(gl: WebGLRenderingContext, transform: Transform) {\n this.context = new Context(gl);\n this.transform = transform;\n this._tileTextures = {};\n\n this.setup();\n\n // Within each layer there are multiple distinct z-planes that can be drawn to.\n // This is implemented using the WebGL depth buffer.\n this.numSublayers = SourceCache.maxUnderzooming + SourceCache.maxOverzooming + 1;\n this.depthEpsilon = 1 / Math.pow(2, 16);\n\n this.crossTileSymbolIndex = new CrossTileSymbolIndex();\n\n this.gpuTimers = {};\n }\n\n /*\n * Update the GL viewport, projection matrix, and transforms to compensate\n * for a new width and height value.\n */\n resize(width: number, height: number) {\n this.width = width * browser.devicePixelRatio;\n this.height = height * browser.devicePixelRatio;\n this.context.viewport.set([0, 0, this.width, this.height]);\n\n if (this.style) {\n for (const layerId of this.style._order) {\n this.style._layers[layerId].resize();\n }\n }\n }\n\n setup() {\n const context = this.context;\n\n const tileExtentArray = new PosArray();\n tileExtentArray.emplaceBack(0, 0);\n tileExtentArray.emplaceBack(EXTENT, 0);\n tileExtentArray.emplaceBack(0, EXTENT);\n tileExtentArray.emplaceBack(EXTENT, EXTENT);\n this.tileExtentBuffer = context.createVertexBuffer(tileExtentArray, posAttributes.members);\n this.tileExtentSegments = SegmentVector.simpleSegment(0, 0, 4, 2);\n\n const debugArray = new PosArray();\n debugArray.emplaceBack(0, 0);\n debugArray.emplaceBack(EXTENT, 0);\n debugArray.emplaceBack(0, EXTENT);\n debugArray.emplaceBack(EXTENT, EXTENT);\n this.debugBuffer = context.createVertexBuffer(debugArray, posAttributes.members);\n this.debugSegments = SegmentVector.simpleSegment(0, 0, 4, 5);\n\n const rasterBoundsArray = new RasterBoundsArray();\n rasterBoundsArray.emplaceBack(0, 0, 0, 0);\n rasterBoundsArray.emplaceBack(EXTENT, 0, EXTENT, 0);\n rasterBoundsArray.emplaceBack(0, EXTENT, 0, EXTENT);\n rasterBoundsArray.emplaceBack(EXTENT, EXTENT, EXTENT, EXTENT);\n this.rasterBoundsBuffer = context.createVertexBuffer(rasterBoundsArray, rasterBoundsAttributes.members);\n this.rasterBoundsSegments = SegmentVector.simpleSegment(0, 0, 4, 2);\n\n const viewportArray = new PosArray();\n viewportArray.emplaceBack(0, 0);\n viewportArray.emplaceBack(1, 0);\n viewportArray.emplaceBack(0, 1);\n viewportArray.emplaceBack(1, 1);\n this.viewportBuffer = context.createVertexBuffer(viewportArray, posAttributes.members);\n this.viewportSegments = SegmentVector.simpleSegment(0, 0, 4, 2);\n\n const tileLineStripIndices = new LineStripIndexArray();\n tileLineStripIndices.emplaceBack(0);\n tileLineStripIndices.emplaceBack(1);\n tileLineStripIndices.emplaceBack(3);\n tileLineStripIndices.emplaceBack(2);\n tileLineStripIndices.emplaceBack(0);\n this.tileBorderIndexBuffer = context.createIndexBuffer(tileLineStripIndices);\n\n const quadTriangleIndices = new TriangleIndexArray();\n quadTriangleIndices.emplaceBack(0, 1, 2);\n quadTriangleIndices.emplaceBack(2, 1, 3);\n this.quadTriangleIndexBuffer = context.createIndexBuffer(quadTriangleIndices);\n\n this.emptyTexture = new Texture(context, {\n width: 1,\n height: 1,\n data: new Uint8Array([0, 0, 0, 0])\n }, context.gl.RGBA);\n\n const gl = this.context.gl;\n this.stencilClearMode = new StencilMode({func: gl.ALWAYS, mask: 0}, 0x0, 0xFF, gl.ZERO, gl.ZERO, gl.ZERO);\n }\n\n /*\n * Reset the drawing canvas by clearing the stencil buffer so that we can draw\n * new tiles at the same location, while retaining previously drawn pixels.\n */\n clearStencil() {\n const context = this.context;\n const gl = context.gl;\n\n this.nextStencilID = 1;\n this.currentStencilSource = undefined;\n\n // As a temporary workaround for https://github.com/mapbox/mapbox-gl-js/issues/5490,\n // pending an upstream fix, we draw a fullscreen stencil=0 clipping mask here,\n // effectively clearing the stencil buffer: once an upstream patch lands, remove\n // this function in favor of context.clear({ stencil: 0x0 })\n\n const matrix = mat4.create();\n mat4.ortho(matrix, 0, this.width, this.height, 0, 0, 1);\n mat4.scale(matrix, matrix, [gl.drawingBufferWidth, gl.drawingBufferHeight, 0]);\n\n this.useProgram('clippingMask').draw(context, gl.TRIANGLES,\n DepthMode.disabled, this.stencilClearMode, ColorMode.disabled, CullFaceMode.disabled,\n clippingMaskUniformValues(matrix),\n '$clipping', this.viewportBuffer,\n this.quadTriangleIndexBuffer, this.viewportSegments);\n }\n\n _renderTileClippingMasks(layer: StyleLayer, tileIDs: Array) {\n if (this.currentStencilSource === layer.source || !layer.isTileClipped() || !tileIDs || !tileIDs.length) return;\n\n this.currentStencilSource = layer.source;\n\n const context = this.context;\n const gl = context.gl;\n\n if (this.nextStencilID + tileIDs.length > 256) {\n // we'll run out of fresh IDs so we need to clear and start from scratch\n this.clearStencil();\n }\n\n context.setColorMode(ColorMode.disabled);\n context.setDepthMode(DepthMode.disabled);\n\n const program = this.useProgram('clippingMask');\n\n this._tileClippingMaskIDs = {};\n\n for (const tileID of tileIDs) {\n const id = this._tileClippingMaskIDs[tileID.key] = this.nextStencilID++;\n\n program.draw(context, gl.TRIANGLES, DepthMode.disabled,\n // Tests will always pass, and ref value will be written to stencil buffer.\n new StencilMode({func: gl.ALWAYS, mask: 0}, id, 0xFF, gl.KEEP, gl.KEEP, gl.REPLACE),\n ColorMode.disabled, CullFaceMode.disabled, clippingMaskUniformValues(tileID.posMatrix),\n '$clipping', this.tileExtentBuffer,\n this.quadTriangleIndexBuffer, this.tileExtentSegments);\n }\n }\n\n stencilModeFor3D(): StencilMode {\n this.currentStencilSource = undefined;\n\n if (this.nextStencilID + 1 > 256) {\n this.clearStencil();\n }\n\n const id = this.nextStencilID++;\n const gl = this.context.gl;\n return new StencilMode({func: gl.NOTEQUAL, mask: 0xFF}, id, 0xFF, gl.KEEP, gl.KEEP, gl.REPLACE);\n }\n\n stencilModeForClipping(tileID: OverscaledTileID): StencilMode {\n const gl = this.context.gl;\n return new StencilMode({func: gl.EQUAL, mask: 0xFF}, this._tileClippingMaskIDs[tileID.key], 0x00, gl.KEEP, gl.KEEP, gl.REPLACE);\n }\n\n /*\n * Sort coordinates by Z as drawing tiles is done in Z-descending order.\n * All children with the same Z write the same stencil value. Children\n * stencil values are greater than parent's. This is used only for raster\n * and raster-dem tiles, which are already clipped to tile boundaries, to\n * mask area of tile overlapped by children tiles.\n * Stencil ref values continue range used in _tileClippingMaskIDs.\n *\n * Returns [StencilMode for tile overscaleZ map, sortedCoords].\n */\n stencilConfigForOverlap(tileIDs: Array): [{[_: number]: $ReadOnly}, Array] {\n const gl = this.context.gl;\n const coords = tileIDs.sort((a, b) => b.overscaledZ - a.overscaledZ);\n const minTileZ = coords[coords.length - 1].overscaledZ;\n const stencilValues = coords[0].overscaledZ - minTileZ + 1;\n if (stencilValues > 1) {\n this.currentStencilSource = undefined;\n if (this.nextStencilID + stencilValues > 256) {\n this.clearStencil();\n }\n const zToStencilMode = {};\n for (let i = 0; i < stencilValues; i++) {\n zToStencilMode[i + minTileZ] = new StencilMode({func: gl.GEQUAL, mask: 0xFF}, i + this.nextStencilID, 0xFF, gl.KEEP, gl.KEEP, gl.REPLACE);\n }\n this.nextStencilID += stencilValues;\n return [zToStencilMode, coords];\n }\n return [{[minTileZ]: StencilMode.disabled}, coords];\n }\n\n colorModeForRenderPass(): $ReadOnly {\n const gl = this.context.gl;\n if (this._showOverdrawInspector) {\n const numOverdrawSteps = 8;\n const a = 1 / numOverdrawSteps;\n\n return new ColorMode([gl.CONSTANT_COLOR, gl.ONE], new Color(a, a, a, 0), [true, true, true, true]);\n } else if (this.renderPass === 'opaque') {\n return ColorMode.unblended;\n } else {\n return ColorMode.alphaBlended;\n }\n }\n\n depthModeForSublayer(n: number, mask: DepthMaskType, func: ?DepthFuncType): $ReadOnly {\n if (!this.opaquePassEnabledForLayer()) return DepthMode.disabled;\n const depth = 1 - ((1 + this.currentLayer) * this.numSublayers + n) * this.depthEpsilon;\n return new DepthMode(func || this.context.gl.LEQUAL, mask, [depth, depth]);\n }\n\n /*\n * The opaque pass and 3D layers both use the depth buffer.\n * Layers drawn above 3D layers need to be drawn using the\n * painter's algorithm so that they appear above 3D features.\n * This returns true for layers that can be drawn using the\n * opaque pass.\n */\n opaquePassEnabledForLayer() {\n return this.currentLayer < this.opaquePassCutoff;\n }\n\n render(style: Style, options: PainterOptions) {\n this.style = style;\n this.options = options;\n\n this.lineAtlas = style.lineAtlas;\n this.imageManager = style.imageManager;\n this.glyphManager = style.glyphManager;\n\n this.symbolFadeChange = style.placement.symbolFadeChange(browser.now());\n\n this.imageManager.beginFrame();\n\n const layerIds = this.style._order;\n const sourceCaches = this.style.sourceCaches;\n\n for (const id in sourceCaches) {\n const sourceCache = sourceCaches[id];\n if (sourceCache.used) {\n sourceCache.prepare(this.context);\n }\n }\n\n const coordsAscending: {[_: string]: Array} = {};\n const coordsDescending: {[_: string]: Array} = {};\n const coordsDescendingSymbol: {[_: string]: Array} = {};\n\n for (const id in sourceCaches) {\n const sourceCache = sourceCaches[id];\n coordsAscending[id] = sourceCache.getVisibleCoordinates();\n coordsDescending[id] = coordsAscending[id].slice().reverse();\n coordsDescendingSymbol[id] = sourceCache.getVisibleCoordinates(true).reverse();\n }\n\n this.opaquePassCutoff = Infinity;\n for (let i = 0; i < layerIds.length; i++) {\n const layerId = layerIds[i];\n if (this.style._layers[layerId].is3D()) {\n this.opaquePassCutoff = i;\n break;\n }\n }\n\n // Offscreen pass ===============================================\n // We first do all rendering that requires rendering to a separate\n // framebuffer, and then save those for rendering back to the map\n // later: in doing this we avoid doing expensive framebuffer restores.\n this.renderPass = 'offscreen';\n\n for (const layerId of layerIds) {\n const layer = this.style._layers[layerId];\n if (!layer.hasOffscreenPass() || layer.isHidden(this.transform.zoom)) continue;\n\n const coords = coordsDescending[layer.source];\n if (layer.type !== 'custom' && !coords.length) continue;\n\n this.renderLayer(this, sourceCaches[layer.source], layer, coords);\n }\n\n // Rebind the main framebuffer now that all offscreen layers have been rendered:\n this.context.bindFramebuffer.set(null);\n\n // Clear buffers in preparation for drawing to the main framebuffer\n this.context.clear({color: options.showOverdrawInspector ? Color.black : Color.transparent, depth: 1});\n this.clearStencil();\n\n this._showOverdrawInspector = options.showOverdrawInspector;\n this.depthRangeFor3D = [0, 1 - ((style._order.length + 2) * this.numSublayers * this.depthEpsilon)];\n\n // Opaque pass ===============================================\n // Draw opaque layers top-to-bottom first.\n this.renderPass = 'opaque';\n\n for (this.currentLayer = layerIds.length - 1; this.currentLayer >= 0; this.currentLayer--) {\n const layer = this.style._layers[layerIds[this.currentLayer]];\n const sourceCache = sourceCaches[layer.source];\n const coords = coordsAscending[layer.source];\n\n this._renderTileClippingMasks(layer, coords);\n this.renderLayer(this, sourceCache, layer, coords);\n }\n\n // Translucent pass ===============================================\n // Draw all other layers bottom-to-top.\n this.renderPass = 'translucent';\n\n for (this.currentLayer = 0; this.currentLayer < layerIds.length; this.currentLayer++) {\n const layer = this.style._layers[layerIds[this.currentLayer]];\n const sourceCache = sourceCaches[layer.source];\n\n // For symbol layers in the translucent pass, we add extra tiles to the renderable set\n // for cross-tile symbol fading. Symbol layers don't use tile clipping, so no need to render\n // separate clipping masks\n const coords = (layer.type === 'symbol' ? coordsDescendingSymbol : coordsDescending)[layer.source];\n\n this._renderTileClippingMasks(layer, coordsAscending[layer.source]);\n this.renderLayer(this, sourceCache, layer, coords);\n }\n\n if (this.options.showTileBoundaries) {\n //Use source with highest maxzoom\n let selectedSource;\n let sourceCache;\n const layers = values(this.style._layers);\n layers.forEach((layer) => {\n if (layer.source && !layer.isHidden(this.transform.zoom)) {\n if (layer.source !== (sourceCache && sourceCache.id)) {\n sourceCache = this.style.sourceCaches[layer.source];\n }\n if (!selectedSource || (selectedSource.getSource().maxzoom < sourceCache.getSource().maxzoom)) {\n selectedSource = sourceCache;\n }\n }\n });\n if (selectedSource) {\n draw.debug(this, selectedSource, selectedSource.getVisibleCoordinates());\n }\n }\n\n if (this.options.showPadding) {\n drawDebugPadding(this);\n }\n\n // Set defaults for most GL values so that anyone using the state after the render\n // encounters more expected values.\n this.context.setDefault();\n }\n\n renderLayer(painter: Painter, sourceCache: SourceCache, layer: StyleLayer, coords: Array) {\n if (layer.isHidden(this.transform.zoom)) return;\n if (layer.type !== 'background' && layer.type !== 'custom' && !coords.length) return;\n this.id = layer.id;\n\n this.gpuTimingStart(layer);\n draw[layer.type](painter, sourceCache, layer, coords, this.style.placement.variableOffsets);\n this.gpuTimingEnd();\n }\n\n gpuTimingStart(layer: StyleLayer) {\n if (!this.options.gpuTiming) return;\n const ext = this.context.extTimerQuery;\n // This tries to time the draw call itself, but note that the cost for drawing a layer\n // may be dominated by the cost of uploading vertices to the GPU.\n // To instrument that, we'd need to pass the layerTimers object down into the bucket\n // uploading logic.\n let layerTimer = this.gpuTimers[layer.id];\n if (!layerTimer) {\n layerTimer = this.gpuTimers[layer.id] = {\n calls: 0,\n cpuTime: 0,\n query: ext.createQueryEXT()\n };\n }\n layerTimer.calls++;\n ext.beginQueryEXT(ext.TIME_ELAPSED_EXT, layerTimer.query);\n }\n\n gpuTimingEnd() {\n if (!this.options.gpuTiming) return;\n const ext = this.context.extTimerQuery;\n ext.endQueryEXT(ext.TIME_ELAPSED_EXT);\n }\n\n collectGpuTimers() {\n const currentLayerTimers = this.gpuTimers;\n this.gpuTimers = {};\n return currentLayerTimers;\n }\n\n queryGpuTimers(gpuTimers: {[_: string]: any}) {\n const layers = {};\n for (const layerId in gpuTimers) {\n const gpuTimer = gpuTimers[layerId];\n const ext = this.context.extTimerQuery;\n const gpuTime = ext.getQueryObjectEXT(gpuTimer.query, ext.QUERY_RESULT_EXT) / (1000 * 1000);\n ext.deleteQueryEXT(gpuTimer.query);\n layers[layerId] = gpuTime;\n }\n return layers;\n }\n\n /**\n * Transform a matrix to incorporate the *-translate and *-translate-anchor properties into it.\n * @param inViewportPixelUnitsUnits True when the units accepted by the matrix are in viewport pixels instead of tile units.\n * @returns {Float32Array} matrix\n * @private\n */\n translatePosMatrix(matrix: Float32Array, tile: Tile, translate: [number, number], translateAnchor: 'map' | 'viewport', inViewportPixelUnitsUnits?: boolean) {\n if (!translate[0] && !translate[1]) return matrix;\n\n const angle = inViewportPixelUnitsUnits ?\n (translateAnchor === 'map' ? this.transform.angle : 0) :\n (translateAnchor === 'viewport' ? -this.transform.angle : 0);\n\n if (angle) {\n const sinA = Math.sin(angle);\n const cosA = Math.cos(angle);\n translate = [\n translate[0] * cosA - translate[1] * sinA,\n translate[0] * sinA + translate[1] * cosA\n ];\n }\n\n const translation = [\n inViewportPixelUnitsUnits ? translate[0] : pixelsToTileUnits(tile, translate[0], this.transform.zoom),\n inViewportPixelUnitsUnits ? translate[1] : pixelsToTileUnits(tile, translate[1], this.transform.zoom),\n 0\n ];\n\n const translatedMatrix = new Float32Array(16);\n mat4.translate(translatedMatrix, matrix, translation);\n return translatedMatrix;\n }\n\n saveTileTexture(texture: Texture) {\n const textures = this._tileTextures[texture.size[0]];\n if (!textures) {\n this._tileTextures[texture.size[0]] = [texture];\n } else {\n textures.push(texture);\n }\n }\n\n getTileTexture(size: number) {\n const textures = this._tileTextures[size];\n return textures && textures.length > 0 ? textures.pop() : null;\n }\n\n /**\n * Checks whether a pattern image is needed, and if it is, whether it is not loaded.\n *\n * @returns true if a needed image is missing and rendering needs to be skipped.\n * @private\n */\n isPatternMissing(image: ?CrossFaded): boolean {\n if (!image) return false;\n if (!image.from || !image.to) return true;\n const imagePosA = this.imageManager.getPattern(image.from.toString());\n const imagePosB = this.imageManager.getPattern(image.to.toString());\n return !imagePosA || !imagePosB;\n }\n\n useProgram(name: string, programConfiguration: ?ProgramConfiguration): Program {\n this.cache = this.cache || {};\n const key = `${name}${programConfiguration ? programConfiguration.cacheKey : ''}${this._showOverdrawInspector ? '/overdraw' : ''}`;\n if (!this.cache[key]) {\n this.cache[key] = new Program(this.context, name, shaders[name], programConfiguration, programUniforms[name], this._showOverdrawInspector);\n }\n return this.cache[key];\n }\n\n /*\n * Reset some GL state to default values to avoid hard-to-debug bugs\n * in custom layers.\n */\n setCustomLayerDefaults() {\n // Prevent custom layers from unintentionally modify the last VAO used.\n // All other state is state is restored on it's own, but for VAOs it's\n // simpler to unbind so that we don't have to track the state of VAOs.\n this.context.unbindVAO();\n\n // The default values for this state is meaningful and often expected.\n // Leaving this state dirty could cause a lot of confusion for users.\n this.context.cullFace.setDefault();\n this.context.activeTexture.setDefault();\n this.context.pixelStoreUnpack.setDefault();\n this.context.pixelStoreUnpackPremultiplyAlpha.setDefault();\n this.context.pixelStoreUnpackFlipY.setDefault();\n }\n\n /*\n * Set GL state that is shared by all layers.\n */\n setBaseState() {\n const gl = this.context.gl;\n this.context.cullFace.set(false);\n this.context.viewport.set([0, 0, this.width, this.height]);\n this.context.blendEquation.set(gl.FUNC_ADD);\n }\n\n initDebugOverlayCanvas() {\n if (this.debugOverlayCanvas == null) {\n this.debugOverlayCanvas = window.document.createElement('canvas');\n this.debugOverlayCanvas.width = 512;\n this.debugOverlayCanvas.height = 512;\n const gl = this.context.gl;\n this.debugOverlayTexture = new Texture(this.context, this.debugOverlayCanvas, gl.RGBA);\n }\n }\n\n destroy() {\n this.emptyTexture.destroy();\n if (this.debugOverlayTexture) {\n this.debugOverlayTexture.destroy();\n }\n }\n}\n\nexport default Painter;\n", "// @flow\n\nimport StencilMode from '../gl/stencil_mode';\nimport DepthMode from '../gl/depth_mode';\nimport CullFaceMode from '../gl/cull_face_mode';\nimport Program from './program';\nimport {circleUniformValues} from './program/circle_program';\nimport SegmentVector from '../data/segment';\nimport {OverscaledTileID} from '../source/tile_id';\n\nimport type Painter from './painter';\nimport type SourceCache from '../source/source_cache';\nimport type CircleStyleLayer from '../style/style_layer/circle_style_layer';\nimport type CircleBucket from '../data/bucket/circle_bucket';\nimport type ProgramConfiguration from '../data/program_configuration';\nimport type VertexBuffer from '../gl/vertex_buffer';\nimport type IndexBuffer from '../gl/index_buffer';\nimport type {UniformValues} from './uniform_binding';\nimport type {CircleUniformsType} from './program/circle_program';\n\nexport default drawCircles;\n\ntype TileRenderState = {\n programConfiguration: ProgramConfiguration,\n program: Program<*>,\n layoutVertexBuffer: VertexBuffer,\n indexBuffer: IndexBuffer,\n uniformValues: UniformValues\n};\n\ntype SegmentsTileRenderState = {\n segments: SegmentVector,\n sortKey: number,\n state: TileRenderState\n};\n\nfunction drawCircles(painter: Painter, sourceCache: SourceCache, layer: CircleStyleLayer, coords: Array) {\n if (painter.renderPass !== 'translucent') return;\n\n const opacity = layer.paint.get('circle-opacity');\n const strokeWidth = layer.paint.get('circle-stroke-width');\n const strokeOpacity = layer.paint.get('circle-stroke-opacity');\n const sortFeaturesByKey = layer.layout.get('circle-sort-key').constantOr(1) !== undefined;\n\n if (opacity.constantOr(1) === 0 && (strokeWidth.constantOr(1) === 0 || strokeOpacity.constantOr(1) === 0)) {\n return;\n }\n\n const context = painter.context;\n const gl = context.gl;\n\n const depthMode = painter.depthModeForSublayer(0, DepthMode.ReadOnly);\n // Turn off stencil testing to allow circles to be drawn across boundaries,\n // so that large circles are not clipped to tiles\n const stencilMode = StencilMode.disabled;\n const colorMode = painter.colorModeForRenderPass();\n\n const segmentsRenderStates: Array = [];\n\n for (let i = 0; i < coords.length; i++) {\n const coord = coords[i];\n\n const tile = sourceCache.getTile(coord);\n const bucket: ?CircleBucket<*> = (tile.getBucket(layer): any);\n if (!bucket) continue;\n\n const programConfiguration = bucket.programConfigurations.get(layer.id);\n const program = painter.useProgram('circle', programConfiguration);\n const layoutVertexBuffer = bucket.layoutVertexBuffer;\n const indexBuffer = bucket.indexBuffer;\n const uniformValues = circleUniformValues(painter, coord, tile, layer);\n\n const state: TileRenderState = {\n programConfiguration,\n program,\n layoutVertexBuffer,\n indexBuffer,\n uniformValues,\n };\n\n if (sortFeaturesByKey) {\n const oldSegments = bucket.segments.get();\n for (const segment of oldSegments) {\n segmentsRenderStates.push({\n segments: new SegmentVector([segment]),\n sortKey: ((segment.sortKey: any): number),\n state\n });\n }\n } else {\n segmentsRenderStates.push({\n segments: bucket.segments,\n sortKey: 0,\n state\n });\n }\n\n }\n\n if (sortFeaturesByKey) {\n segmentsRenderStates.sort((a, b) => a.sortKey - b.sortKey);\n }\n\n for (const segmentsState of segmentsRenderStates) {\n const {programConfiguration, program, layoutVertexBuffer, indexBuffer, uniformValues} = segmentsState.state;\n const segments = segmentsState.segments;\n\n program.draw(context, gl.TRIANGLES, depthMode, stencilMode, colorMode, CullFaceMode.disabled,\n uniformValues, layer.id,\n layoutVertexBuffer, indexBuffer, segments,\n layer.paint, painter.transform.zoom, programConfiguration);\n }\n}\n", "// @flow\n\nimport Texture from './texture';\nimport Color from '../style-spec/util/color';\nimport DepthMode from '../gl/depth_mode';\nimport StencilMode from '../gl/stencil_mode';\nimport ColorMode from '../gl/color_mode';\nimport CullFaceMode from '../gl/cull_face_mode';\nimport {\n heatmapUniformValues,\n heatmapTextureUniformValues\n} from './program/heatmap_program';\n\nimport type Painter from './painter';\nimport type SourceCache from '../source/source_cache';\nimport type HeatmapStyleLayer from '../style/style_layer/heatmap_style_layer';\nimport type HeatmapBucket from '../data/bucket/heatmap_bucket';\nimport type {OverscaledTileID} from '../source/tile_id';\n\nexport default drawHeatmap;\n\nfunction drawHeatmap(painter: Painter, sourceCache: SourceCache, layer: HeatmapStyleLayer, coords: Array) {\n if (layer.paint.get('heatmap-opacity') === 0) {\n return;\n }\n\n if (painter.renderPass === 'offscreen') {\n const context = painter.context;\n const gl = context.gl;\n\n // Allow kernels to be drawn across boundaries, so that\n // large kernels are not clipped to tiles\n const stencilMode = StencilMode.disabled;\n // Turn on additive blending for kernels, which is a key aspect of kernel density estimation formula\n const colorMode = new ColorMode([gl.ONE, gl.ONE], Color.transparent, [true, true, true, true]);\n\n bindFramebuffer(context, painter, layer);\n\n context.clear({color: Color.transparent});\n\n for (let i = 0; i < coords.length; i++) {\n const coord = coords[i];\n\n // Skip tiles that have uncovered parents to avoid flickering; we don't need\n // to use complex tile masking here because the change between zoom levels is subtle,\n // so it's fine to simply render the parent until all its 4 children are loaded\n if (sourceCache.hasRenderableParent(coord)) continue;\n\n const tile = sourceCache.getTile(coord);\n const bucket: ?HeatmapBucket = (tile.getBucket(layer): any);\n if (!bucket) continue;\n\n const programConfiguration = bucket.programConfigurations.get(layer.id);\n const program = painter.useProgram('heatmap', programConfiguration);\n const {zoom} = painter.transform;\n\n program.draw(context, gl.TRIANGLES, DepthMode.disabled, stencilMode, colorMode, CullFaceMode.disabled,\n heatmapUniformValues(coord.posMatrix,\n tile, zoom, layer.paint.get('heatmap-intensity')),\n layer.id, bucket.layoutVertexBuffer, bucket.indexBuffer,\n bucket.segments, layer.paint, painter.transform.zoom,\n programConfiguration);\n }\n\n context.viewport.set([0, 0, painter.width, painter.height]);\n\n } else if (painter.renderPass === 'translucent') {\n painter.context.setColorMode(painter.colorModeForRenderPass());\n renderTextureToMap(painter, layer);\n }\n}\n\nfunction bindFramebuffer(context, painter, layer) {\n const gl = context.gl;\n context.activeTexture.set(gl.TEXTURE1);\n\n // Use a 4x downscaled screen texture for better performance\n context.viewport.set([0, 0, painter.width / 4, painter.height / 4]);\n\n let fbo = layer.heatmapFbo;\n\n if (!fbo) {\n const texture = gl.createTexture();\n gl.bindTexture(gl.TEXTURE_2D, texture);\n gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);\n gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);\n gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);\n gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);\n\n fbo = layer.heatmapFbo = context.createFramebuffer(painter.width / 4, painter.height / 4, false);\n\n bindTextureToFramebuffer(context, painter, texture, fbo);\n\n } else {\n gl.bindTexture(gl.TEXTURE_2D, fbo.colorAttachment.get());\n context.bindFramebuffer.set(fbo.framebuffer);\n }\n}\n\nfunction bindTextureToFramebuffer(context, painter, texture, fbo) {\n const gl = context.gl;\n // Use the higher precision half-float texture where available (producing much smoother looking heatmaps);\n // Otherwise, fall back to a low precision texture\n const internalFormat = context.extRenderToTextureHalfFloat ? context.extTextureHalfFloat.HALF_FLOAT_OES : gl.UNSIGNED_BYTE;\n gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, painter.width / 4, painter.height / 4, 0, gl.RGBA, internalFormat, null);\n fbo.colorAttachment.set(texture);\n}\n\nfunction renderTextureToMap(painter, layer) {\n const context = painter.context;\n const gl = context.gl;\n\n // Here we bind two different textures from which we'll sample in drawing\n // heatmaps: the kernel texture, prepared in the offscreen pass, and a\n // color ramp texture.\n const fbo = layer.heatmapFbo;\n if (!fbo) return;\n context.activeTexture.set(gl.TEXTURE0);\n gl.bindTexture(gl.TEXTURE_2D, fbo.colorAttachment.get());\n\n context.activeTexture.set(gl.TEXTURE1);\n let colorRampTexture = layer.colorRampTexture;\n if (!colorRampTexture) {\n colorRampTexture = layer.colorRampTexture = new Texture(context, layer.colorRamp, gl.RGBA);\n }\n colorRampTexture.bind(gl.LINEAR, gl.CLAMP_TO_EDGE);\n\n painter.useProgram('heatmapTexture').draw(context, gl.TRIANGLES,\n DepthMode.disabled, StencilMode.disabled, painter.colorModeForRenderPass(), CullFaceMode.disabled,\n heatmapTextureUniformValues(painter, layer, 0, 1),\n layer.id, painter.viewportBuffer, painter.quadTriangleIndexBuffer,\n painter.viewportSegments, layer.paint, painter.transform.zoom);\n}\n", "// @flow\n\nimport DepthMode from '../gl/depth_mode';\nimport CullFaceMode from '../gl/cull_face_mode';\nimport Texture from './texture';\nimport {\n lineUniformValues,\n linePatternUniformValues,\n lineSDFUniformValues,\n lineGradientUniformValues\n} from './program/line_program';\n\nimport type Painter from './painter';\nimport type SourceCache from '../source/source_cache';\nimport type LineStyleLayer from '../style/style_layer/line_style_layer';\nimport type LineBucket from '../data/bucket/line_bucket';\nimport type {OverscaledTileID} from '../source/tile_id';\nimport {clamp, nextPowerOfTwo} from '../util/util';\nimport {renderColorRamp} from '../util/color_ramp';\nimport EXTENT from '../data/extent';\n\nexport default function drawLine(painter: Painter, sourceCache: SourceCache, layer: LineStyleLayer, coords: Array) {\n if (painter.renderPass !== 'translucent') return;\n\n const opacity = layer.paint.get('line-opacity');\n const width = layer.paint.get('line-width');\n if (opacity.constantOr(1) === 0 || width.constantOr(1) === 0) return;\n\n const depthMode = painter.depthModeForSublayer(0, DepthMode.ReadOnly);\n const colorMode = painter.colorModeForRenderPass();\n\n const dasharray = layer.paint.get('line-dasharray');\n const patternProperty = layer.paint.get('line-pattern');\n const image = patternProperty.constantOr((1: any));\n\n const gradient = layer.paint.get('line-gradient');\n const crossfade = layer.getCrossfadeParameters();\n\n const programId =\n image ? 'linePattern' :\n dasharray ? 'lineSDF' :\n gradient ? 'lineGradient' : 'line';\n\n const context = painter.context;\n const gl = context.gl;\n\n let firstTile = true;\n\n for (const coord of coords) {\n const tile = sourceCache.getTile(coord);\n\n if (image && !tile.patternsLoaded()) continue;\n\n const bucket: ?LineBucket = (tile.getBucket(layer): any);\n if (!bucket) continue;\n\n const programConfiguration = bucket.programConfigurations.get(layer.id);\n const prevProgram = painter.context.program.get();\n const program = painter.useProgram(programId, programConfiguration);\n const programChanged = firstTile || program.program !== prevProgram;\n\n const constantPattern = patternProperty.constantOr(null);\n if (constantPattern && tile.imageAtlas) {\n const atlas = tile.imageAtlas;\n const posTo = atlas.patternPositions[constantPattern.to.toString()];\n const posFrom = atlas.patternPositions[constantPattern.from.toString()];\n if (posTo && posFrom) programConfiguration.setConstantPatternPositions(posTo, posFrom);\n }\n\n const uniformValues = image ? linePatternUniformValues(painter, tile, layer, crossfade) :\n dasharray ? lineSDFUniformValues(painter, tile, layer, dasharray, crossfade) :\n gradient ? lineGradientUniformValues(painter, tile, layer, bucket.lineClipsArray.length) :\n lineUniformValues(painter, tile, layer);\n\n if (image) {\n context.activeTexture.set(gl.TEXTURE0);\n tile.imageAtlasTexture.bind(gl.LINEAR, gl.CLAMP_TO_EDGE);\n programConfiguration.updatePaintBuffers(crossfade);\n } else if (dasharray && (programChanged || painter.lineAtlas.dirty)) {\n context.activeTexture.set(gl.TEXTURE0);\n painter.lineAtlas.bind(context);\n } else if (gradient) {\n const layerGradient = bucket.gradients[layer.id];\n let gradientTexture = layerGradient.texture;\n if (layer.gradientVersion !== layerGradient.version) {\n let textureResolution = 256;\n if (layer.stepInterpolant) {\n const sourceMaxZoom = sourceCache.getSource().maxzoom;\n const potentialOverzoom = coord.canonical.z === sourceMaxZoom ?\n Math.ceil(1 << (painter.transform.maxZoom - coord.canonical.z)) : 1;\n const lineLength = bucket.maxLineLength / EXTENT;\n // Logical pixel tile size is 512px, and 1024px right before current zoom + 1\n const maxTilePixelSize = 1024;\n // Maximum possible texture coverage heuristic, bound by hardware max texture size\n const maxTextureCoverage = lineLength * maxTilePixelSize * potentialOverzoom;\n textureResolution = clamp(nextPowerOfTwo(maxTextureCoverage), 256, context.maxTextureSize);\n }\n layerGradient.gradient = renderColorRamp({\n expression: layer.gradientExpression(),\n evaluationKey: 'lineProgress',\n resolution: textureResolution,\n image: layerGradient.gradient || undefined,\n clips: bucket.lineClipsArray\n });\n if (layerGradient.texture) {\n layerGradient.texture.update(layerGradient.gradient);\n } else {\n layerGradient.texture = new Texture(context, layerGradient.gradient, gl.RGBA);\n }\n layerGradient.version = layer.gradientVersion;\n gradientTexture = layerGradient.texture;\n }\n context.activeTexture.set(gl.TEXTURE0);\n gradientTexture.bind(layer.stepInterpolant ? gl.NEAREST : gl.LINEAR, gl.CLAMP_TO_EDGE);\n }\n\n program.draw(context, gl.TRIANGLES, depthMode,\n painter.stencilModeForClipping(coord), colorMode, CullFaceMode.disabled, uniformValues,\n layer.id, bucket.layoutVertexBuffer, bucket.indexBuffer, bucket.segments,\n layer.paint, painter.transform.zoom, programConfiguration, bucket.layoutVertexBuffer2);\n\n firstTile = false;\n // once refactored so that bound texture state is managed, we'll also be able to remove this firstTile/programChanged logic\n }\n}\n", "// @flow\n\nimport StencilMode from '../gl/stencil_mode';\nimport DepthMode from '../gl/depth_mode';\nimport CullFaceMode from '../gl/cull_face_mode';\nimport {\n backgroundUniformValues,\n backgroundPatternUniformValues\n} from './program/background_program';\n\nimport type Painter from './painter';\nimport type SourceCache from '../source/source_cache';\nimport type BackgroundStyleLayer from '../style/style_layer/background_style_layer';\n\nexport default drawBackground;\n\nfunction drawBackground(painter: Painter, sourceCache: SourceCache, layer: BackgroundStyleLayer) {\n const color = layer.paint.get('background-color');\n const opacity = layer.paint.get('background-opacity');\n\n if (opacity === 0) return;\n\n const context = painter.context;\n const gl = context.gl;\n const transform = painter.transform;\n const tileSize = transform.tileSize;\n const image = layer.paint.get('background-pattern');\n if (painter.isPatternMissing(image)) return;\n\n const pass = (!image && color.a === 1 && opacity === 1 && painter.opaquePassEnabledForLayer()) ? 'opaque' : 'translucent';\n if (painter.renderPass !== pass) return;\n\n const stencilMode = StencilMode.disabled;\n const depthMode = painter.depthModeForSublayer(0, pass === 'opaque' ? DepthMode.ReadWrite : DepthMode.ReadOnly);\n const colorMode = painter.colorModeForRenderPass();\n\n const program = painter.useProgram(image ? 'backgroundPattern' : 'background');\n\n const tileIDs = transform.coveringTiles({tileSize});\n\n if (image) {\n context.activeTexture.set(gl.TEXTURE0);\n painter.imageManager.bind(painter.context);\n }\n\n const crossfade = layer.getCrossfadeParameters();\n for (const tileID of tileIDs) {\n const matrix = painter.transform.calculatePosMatrix(tileID.toUnwrapped());\n const uniformValues = image ?\n backgroundPatternUniformValues(matrix, opacity, painter, image, {tileID, tileSize}, crossfade) :\n backgroundUniformValues(matrix, opacity, color);\n\n program.draw(context, gl.TRIANGLES, depthMode, stencilMode, colorMode, CullFaceMode.disabled,\n uniformValues, layer.id, painter.tileExtentBuffer,\n painter.quadTriangleIndexBuffer, painter.tileExtentSegments);\n }\n}\n", "// @flow\n\nexport default drawCustom;\n\nimport DepthMode from '../gl/depth_mode';\nimport StencilMode from '../gl/stencil_mode';\n\nimport type Painter from './painter';\nimport type SourceCache from '../source/source_cache';\nimport type CustomStyleLayer from '../style/style_layer/custom_style_layer';\n\nfunction drawCustom(painter: Painter, sourceCache: SourceCache, layer: CustomStyleLayer) {\n\n const context = painter.context;\n const implementation = layer.implementation;\n\n if (painter.renderPass === 'offscreen') {\n\n const prerender = implementation.prerender;\n if (prerender) {\n painter.setCustomLayerDefaults();\n context.setColorMode(painter.colorModeForRenderPass());\n\n prerender.call(implementation, context.gl, painter.transform.customLayerMatrix());\n\n context.setDirty();\n painter.setBaseState();\n }\n\n } else if (painter.renderPass === 'translucent') {\n\n painter.setCustomLayerDefaults();\n\n context.setColorMode(painter.colorModeForRenderPass());\n context.setStencilMode(StencilMode.disabled);\n\n const depthMode = implementation.renderingMode === '3d' ?\n new DepthMode(painter.context.gl.LEQUAL, DepthMode.ReadWrite, painter.depthRangeFor3D) :\n painter.depthModeForSublayer(0, DepthMode.ReadOnly);\n\n context.setDepthMode(depthMode);\n\n implementation.render(context.gl, painter.transform.customLayerMatrix());\n\n context.setDirty();\n painter.setBaseState();\n context.bindFramebuffer.set(null);\n }\n}\n", "// @flow\n\nimport {vec3, vec4} from 'gl-matrix';\nimport assert from 'assert';\n\nclass Frustum {\n points: Array>;\n planes: Array>;\n\n constructor(points_: Array>, planes_: Array>) {\n this.points = points_;\n this.planes = planes_;\n }\n\n static fromInvProjectionMatrix(invProj: Float64Array, worldSize: number, zoom: number): Frustum {\n const clipSpaceCorners = [\n [-1, 1, -1, 1],\n [ 1, 1, -1, 1],\n [ 1, -1, -1, 1],\n [-1, -1, -1, 1],\n [-1, 1, 1, 1],\n [ 1, 1, 1, 1],\n [ 1, -1, 1, 1],\n [-1, -1, 1, 1]\n ];\n\n const scale = Math.pow(2, zoom);\n\n // Transform frustum corner points from clip space to tile space\n const frustumCoords = clipSpaceCorners\n .map(v => vec4.transformMat4([], v, invProj))\n .map(v => vec4.scale([], v, 1.0 / v[3] / worldSize * scale));\n\n const frustumPlanePointIndices = [\n [0, 1, 2], // near\n [6, 5, 4], // far\n [0, 3, 7], // left\n [2, 1, 5], // right\n [3, 2, 6], // bottom\n [0, 4, 5] // top\n ];\n\n const frustumPlanes = frustumPlanePointIndices.map((p: Array) => {\n const a = vec3.sub([], frustumCoords[p[0]], frustumCoords[p[1]]);\n const b = vec3.sub([], frustumCoords[p[2]], frustumCoords[p[1]]);\n const n = vec3.normalize([], vec3.cross([], a, b));\n const d = -vec3.dot(n, frustumCoords[p[1]]);\n return n.concat(d);\n });\n\n return new Frustum(frustumCoords, frustumPlanes);\n }\n}\n\nclass Aabb {\n min: vec3;\n max: vec3;\n center: vec3;\n\n constructor(min_: vec3, max_: vec3) {\n this.min = min_;\n this.max = max_;\n this.center = vec3.scale([], vec3.add([], this.min, this.max), 0.5);\n }\n\n quadrant(index: number): Aabb {\n const split = [(index % 2) === 0, index < 2];\n const qMin = vec3.clone(this.min);\n const qMax = vec3.clone(this.max);\n for (let axis = 0; axis < split.length; axis++) {\n qMin[axis] = split[axis] ? this.min[axis] : this.center[axis];\n qMax[axis] = split[axis] ? this.center[axis] : this.max[axis];\n }\n // Elevation is always constant, hence quadrant.max.z = this.max.z\n qMax[2] = this.max[2];\n return new Aabb(qMin, qMax);\n }\n\n distanceX(point: Array): number {\n const pointOnAabb = Math.max(Math.min(this.max[0], point[0]), this.min[0]);\n return pointOnAabb - point[0];\n }\n\n distanceY(point: Array): number {\n const pointOnAabb = Math.max(Math.min(this.max[1], point[1]), this.min[1]);\n return pointOnAabb - point[1];\n }\n\n // Performs a frustum-aabb intersection test. Returns 0 if there's no intersection,\n // 1 if shapes are intersecting and 2 if the aabb if fully inside the frustum.\n intersects(frustum: Frustum): number {\n // Execute separating axis test between two convex objects to find intersections\n // Each frustum plane together with 3 major axes define the separating axes\n // Note: test only 4 points as both min and max points have equal elevation\n assert(this.min[2] === 0 && this.max[2] === 0);\n\n const aabbPoints = [\n [this.min[0], this.min[1], 0.0, 1],\n [this.max[0], this.min[1], 0.0, 1],\n [this.max[0], this.max[1], 0.0, 1],\n [this.min[0], this.max[1], 0.0, 1]\n ];\n\n let fullyInside = true;\n\n for (let p = 0; p < frustum.planes.length; p++) {\n const plane = frustum.planes[p];\n let pointsInside = 0;\n\n for (let i = 0; i < aabbPoints.length; i++) {\n pointsInside += vec4.dot(plane, aabbPoints[i]) >= 0;\n }\n\n if (pointsInside === 0)\n return 0;\n\n if (pointsInside !== aabbPoints.length)\n fullyInside = false;\n }\n\n if (fullyInside)\n return 2;\n\n for (let axis = 0; axis < 3; axis++) {\n let projMin = Number.MAX_VALUE;\n let projMax = -Number.MAX_VALUE;\n\n for (let p = 0; p < frustum.points.length; p++) {\n const projectedPoint = frustum.points[p][axis] - this.min[axis];\n\n projMin = Math.min(projMin, projectedPoint);\n projMax = Math.max(projMax, projectedPoint);\n }\n\n if (projMax < 0 || projMin > this.max[axis] - this.min[axis])\n return 0;\n }\n\n return 1;\n }\n}\nexport {\n Aabb,\n Frustum\n};\n", "// @flow\nimport {number} from \"../style-spec/util/interpolate\";\nimport Point from \"@mapbox/point-geometry\";\nimport {clamp} from \"../util/util\";\n\n/**\n * An `EdgeInset` object represents screen space padding applied to the edges of the viewport.\n * This shifts the apprent center or the vanishing point of the map. This is useful for adding floating UI elements\n * on top of the map and having the vanishing point shift as UI elements resize.\n *\n * @param {number} [top=0]\n * @param {number} [bottom=0]\n * @param {number} [left=0]\n * @param {number} [right=0]\n */\nclass EdgeInsets {\n top: number;\n bottom: number;\n left: number;\n right: number;\n\n constructor(top: number = 0, bottom: number = 0, left: number = 0, right: number = 0) {\n if (isNaN(top) || top < 0 ||\n isNaN(bottom) || bottom < 0 ||\n isNaN(left) || left < 0 ||\n isNaN(right) || right < 0\n ) {\n throw new Error('Invalid value for edge-insets, top, bottom, left and right must all be numbers');\n }\n\n this.top = top;\n this.bottom = bottom;\n this.left = left;\n this.right = right;\n }\n\n /**\n * Interpolates the inset in-place.\n * This maintains the current inset value for any inset not present in `target`.\n *\n * @param {PaddingOptions} target\n * @param {number} t\n * @returns {EdgeInsets}\n * @memberof EdgeInsets\n */\n interpolate(start: PaddingOptions | EdgeInsets, target: PaddingOptions, t: number): EdgeInsets {\n if (target.top != null && start.top != null) this.top = number(start.top, target.top, t);\n if (target.bottom != null && start.bottom != null) this.bottom = number(start.bottom, target.bottom, t);\n if (target.left != null && start.left != null) this.left = number(start.left, target.left, t);\n if (target.right != null && start.right != null) this.right = number(start.right, target.right, t);\n\n return this;\n }\n\n /**\n * Utility method that computes the new apprent center or vanishing point after applying insets.\n * This is in pixels and with the top left being (0.0) and +y being downwards.\n *\n * @param {number} width\n * @param {number} height\n * @returns {Point}\n * @memberof EdgeInsets\n */\n getCenter(width: number, height: number): Point {\n // Clamp insets so they never overflow width/height and always calculate a valid center\n const x = clamp((this.left + width - this.right) / 2, 0, width);\n const y = clamp((this.top + height - this.bottom) / 2, 0, height);\n\n return new Point(x, y);\n }\n\n equals(other: PaddingOptions): boolean {\n return this.top === other.top &&\n this.bottom === other.bottom &&\n this.left === other.left &&\n this.right === other.right;\n }\n\n clone(): EdgeInsets {\n return new EdgeInsets(this.top, this.bottom, this.left, this.right);\n }\n\n /**\n * Returns the current sdtate as json, useful when you want to have a\n * read-only representation of the inset.\n *\n * @returns {PaddingOptions}\n * @memberof EdgeInsets\n */\n toJSON(): PaddingOptions {\n return {\n top: this.top,\n bottom: this.bottom,\n left: this.left,\n right: this.right\n };\n }\n}\n\nexport type PaddingOptions = {top: ?number, bottom: ?number, right: ?number, left: ?number};\n\nexport default EdgeInsets;\n", "// @flow\n\nimport LngLat from './lng_lat';\nimport LngLatBounds from './lng_lat_bounds';\nimport MercatorCoordinate, {mercatorXfromLng, mercatorYfromLat, mercatorZfromAltitude} from './mercator_coordinate';\nimport Point from '@mapbox/point-geometry';\nimport {wrap, clamp} from '../util/util';\nimport {number as interpolate} from '../style-spec/util/interpolate';\nimport EXTENT from '../data/extent';\nimport {vec4, mat4, mat2, vec2} from 'gl-matrix';\nimport {Aabb, Frustum} from '../util/primitives.js';\nimport EdgeInsets from './edge_insets';\n\nimport {UnwrappedTileID, OverscaledTileID, CanonicalTileID} from '../source/tile_id';\nimport type {PaddingOptions} from './edge_insets';\n\n/**\n * A single transform, generally used for a single tile to be\n * scaled, rotated, and zoomed.\n * @private\n */\nclass Transform {\n tileSize: number;\n tileZoom: number;\n lngRange: ?[number, number];\n latRange: ?[number, number];\n maxValidLatitude: number;\n scale: number;\n width: number;\n height: number;\n angle: number;\n rotationMatrix: Float64Array;\n zoomFraction: number;\n pixelsToGLUnits: [number, number];\n cameraToCenterDistance: number;\n mercatorMatrix: Array;\n projMatrix: Float64Array;\n invProjMatrix: Float64Array;\n alignedProjMatrix: Float64Array;\n pixelMatrix: Float64Array;\n pixelMatrixInverse: Float64Array;\n glCoordMatrix: Float32Array;\n labelPlaneMatrix: Float32Array;\n _fov: number;\n _pitch: number;\n _zoom: number;\n _unmodified: boolean;\n _renderWorldCopies: boolean;\n _minZoom: number;\n _maxZoom: number;\n _minPitch: number;\n _maxPitch: number;\n _center: LngLat;\n _edgeInsets: EdgeInsets;\n _constraining: boolean;\n _posMatrixCache: {[_: string]: Float32Array};\n _alignedPosMatrixCache: {[_: string]: Float32Array};\n\n constructor(minZoom: ?number, maxZoom: ?number, minPitch: ?number, maxPitch: ?number, renderWorldCopies: boolean | void) {\n this.tileSize = 512; // constant\n this.maxValidLatitude = 85.051129; // constant\n\n this._renderWorldCopies = renderWorldCopies === undefined ? true : renderWorldCopies;\n this._minZoom = minZoom || 0;\n this._maxZoom = maxZoom || 22;\n\n this._minPitch = (minPitch === undefined || minPitch === null) ? 0 : minPitch;\n this._maxPitch = (maxPitch === undefined || maxPitch === null) ? 60 : maxPitch;\n\n this.setMaxBounds();\n\n this.width = 0;\n this.height = 0;\n this._center = new LngLat(0, 0);\n this.zoom = 0;\n this.angle = 0;\n this._fov = 0.6435011087932844;\n this._pitch = 0;\n this._unmodified = true;\n this._edgeInsets = new EdgeInsets();\n this._posMatrixCache = {};\n this._alignedPosMatrixCache = {};\n }\n\n clone(): Transform {\n const clone = new Transform(this._minZoom, this._maxZoom, this._minPitch, this.maxPitch, this._renderWorldCopies);\n clone.tileSize = this.tileSize;\n clone.latRange = this.latRange;\n clone.width = this.width;\n clone.height = this.height;\n clone._center = this._center;\n clone.zoom = this.zoom;\n clone.angle = this.angle;\n clone._fov = this._fov;\n clone._pitch = this._pitch;\n clone._unmodified = this._unmodified;\n clone._edgeInsets = this._edgeInsets.clone();\n clone._calcMatrices();\n return clone;\n }\n\n get minZoom(): number { return this._minZoom; }\n set minZoom(zoom: number) {\n if (this._minZoom === zoom) return;\n this._minZoom = zoom;\n this.zoom = Math.max(this.zoom, zoom);\n }\n\n get maxZoom(): number { return this._maxZoom; }\n set maxZoom(zoom: number) {\n if (this._maxZoom === zoom) return;\n this._maxZoom = zoom;\n this.zoom = Math.min(this.zoom, zoom);\n }\n\n get minPitch(): number { return this._minPitch; }\n set minPitch(pitch: number) {\n if (this._minPitch === pitch) return;\n this._minPitch = pitch;\n this.pitch = Math.max(this.pitch, pitch);\n }\n\n get maxPitch(): number { return this._maxPitch; }\n set maxPitch(pitch: number) {\n if (this._maxPitch === pitch) return;\n this._maxPitch = pitch;\n this.pitch = Math.min(this.pitch, pitch);\n }\n\n get renderWorldCopies(): boolean { return this._renderWorldCopies; }\n set renderWorldCopies(renderWorldCopies?: ?boolean) {\n if (renderWorldCopies === undefined) {\n renderWorldCopies = true;\n } else if (renderWorldCopies === null) {\n renderWorldCopies = false;\n }\n\n this._renderWorldCopies = renderWorldCopies;\n }\n\n get worldSize(): number {\n return this.tileSize * this.scale;\n }\n\n get centerOffset(): Point {\n return this.centerPoint._sub(this.size._div(2));\n }\n\n get size(): Point {\n return new Point(this.width, this.height);\n }\n\n get bearing(): number {\n return -this.angle / Math.PI * 180;\n }\n set bearing(bearing: number) {\n const b = -wrap(bearing, -180, 180) * Math.PI / 180;\n if (this.angle === b) return;\n this._unmodified = false;\n this.angle = b;\n this._calcMatrices();\n\n // 2x2 matrix for rotating points\n this.rotationMatrix = mat2.create();\n mat2.rotate(this.rotationMatrix, this.rotationMatrix, this.angle);\n }\n\n get pitch(): number {\n return this._pitch / Math.PI * 180;\n }\n set pitch(pitch: number) {\n const p = clamp(pitch, this.minPitch, this.maxPitch) / 180 * Math.PI;\n if (this._pitch === p) return;\n this._unmodified = false;\n this._pitch = p;\n this._calcMatrices();\n }\n\n get fov(): number {\n return this._fov / Math.PI * 180;\n }\n set fov(fov: number) {\n fov = Math.max(0.01, Math.min(60, fov));\n if (this._fov === fov) return;\n this._unmodified = false;\n this._fov = fov / 180 * Math.PI;\n this._calcMatrices();\n }\n\n get zoom(): number { return this._zoom; }\n set zoom(zoom: number) {\n const z = Math.min(Math.max(zoom, this.minZoom), this.maxZoom);\n if (this._zoom === z) return;\n this._unmodified = false;\n this._zoom = z;\n this.scale = this.zoomScale(z);\n this.tileZoom = Math.floor(z);\n this.zoomFraction = z - this.tileZoom;\n this._constrain();\n this._calcMatrices();\n }\n\n get center(): LngLat { return this._center; }\n set center(center: LngLat) {\n if (center.lat === this._center.lat && center.lng === this._center.lng) return;\n this._unmodified = false;\n this._center = center;\n this._constrain();\n this._calcMatrices();\n }\n\n get padding(): PaddingOptions { return this._edgeInsets.toJSON(); }\n set padding(padding: PaddingOptions) {\n if (this._edgeInsets.equals(padding)) return;\n this._unmodified = false;\n //Update edge-insets inplace\n this._edgeInsets.interpolate(this._edgeInsets, padding, 1);\n this._calcMatrices();\n }\n\n /**\n * The center of the screen in pixels with the top-left corner being (0,0)\n * and +y axis pointing downwards. This accounts for padding.\n *\n * @readonly\n * @type {Point}\n * @memberof Transform\n */\n get centerPoint(): Point {\n return this._edgeInsets.getCenter(this.width, this.height);\n }\n\n /**\n * Returns if the padding params match\n *\n * @param {PaddingOptions} padding\n * @returns {boolean}\n * @memberof Transform\n */\n isPaddingEqual(padding: PaddingOptions): boolean {\n return this._edgeInsets.equals(padding);\n }\n\n /**\n * Helper method to upadte edge-insets inplace\n *\n * @param {PaddingOptions} target\n * @param {number} t\n * @memberof Transform\n */\n interpolatePadding(start: PaddingOptions, target: PaddingOptions, t: number) {\n this._unmodified = false;\n this._edgeInsets.interpolate(start, target, t);\n this._constrain();\n this._calcMatrices();\n }\n\n /**\n * Return a zoom level that will cover all tiles the transform\n * @param {Object} options options\n * @param {number} options.tileSize Tile size, expressed in screen pixels.\n * @param {boolean} options.roundZoom Target zoom level. If true, the value will be rounded to the closest integer. Otherwise the value will be floored.\n * @returns {number} zoom level An integer zoom level at which all tiles will be visible.\n */\n coveringZoomLevel(options: {roundZoom?: boolean, tileSize: number}) {\n const z = (options.roundZoom ? Math.round : Math.floor)(\n this.zoom + this.scaleZoom(this.tileSize / options.tileSize)\n );\n // At negative zoom levels load tiles from z0 because negative tile zoom levels don't exist.\n return Math.max(0, z);\n }\n\n /**\n * Return any \"wrapped\" copies of a given tile coordinate that are visible\n * in the current view.\n *\n * @private\n */\n getVisibleUnwrappedCoordinates(tileID: CanonicalTileID) {\n const result = [new UnwrappedTileID(0, tileID)];\n if (this._renderWorldCopies) {\n const utl = this.pointCoordinate(new Point(0, 0));\n const utr = this.pointCoordinate(new Point(this.width, 0));\n const ubl = this.pointCoordinate(new Point(this.width, this.height));\n const ubr = this.pointCoordinate(new Point(0, this.height));\n const w0 = Math.floor(Math.min(utl.x, utr.x, ubl.x, ubr.x));\n const w1 = Math.floor(Math.max(utl.x, utr.x, ubl.x, ubr.x));\n\n // Add an extra copy of the world on each side to properly render ImageSources and CanvasSources.\n // Both sources draw outside the tile boundaries of the tile that \"contains them\" so we need\n // to add extra copies on both sides in case offscreen tiles need to draw into on-screen ones.\n const extraWorldCopy = 1;\n\n for (let w = w0 - extraWorldCopy; w <= w1 + extraWorldCopy; w++) {\n if (w === 0) continue;\n result.push(new UnwrappedTileID(w, tileID));\n }\n }\n return result;\n }\n\n /**\n * Return all coordinates that could cover this transform for a covering\n * zoom level.\n * @param {Object} options\n * @param {number} options.tileSize\n * @param {number} options.minzoom\n * @param {number} options.maxzoom\n * @param {boolean} options.roundZoom\n * @param {boolean} options.reparseOverscaled\n * @param {boolean} options.renderWorldCopies\n * @returns {Array} OverscaledTileIDs\n * @private\n */\n coveringTiles(\n options: {\n tileSize: number,\n minzoom?: number,\n maxzoom?: number,\n roundZoom?: boolean,\n reparseOverscaled?: boolean,\n renderWorldCopies?: boolean\n }\n ): Array {\n let z = this.coveringZoomLevel(options);\n const actualZ = z;\n\n if (options.minzoom !== undefined && z < options.minzoom) return [];\n if (options.maxzoom !== undefined && z > options.maxzoom) z = options.maxzoom;\n\n const centerCoord = MercatorCoordinate.fromLngLat(this.center);\n const numTiles = Math.pow(2, z);\n const centerPoint = [numTiles * centerCoord.x, numTiles * centerCoord.y, 0];\n const cameraFrustum = Frustum.fromInvProjectionMatrix(this.invProjMatrix, this.worldSize, z);\n\n // No change of LOD behavior for pitch lower than 60 and when there is no top padding: return only tile ids from the requested zoom level\n let minZoom = options.minzoom || 0;\n // Use 0.1 as an epsilon to avoid for explicit == 0.0 floating point checks\n if (this.pitch <= 60.0 && this._edgeInsets.top < 0.1)\n minZoom = z;\n\n // There should always be a certain number of maximum zoom level tiles surrounding the center location\n const radiusOfMaxLvlLodInTiles = 3;\n\n const newRootTile = (wrap: number): any => {\n return {\n // All tiles are on zero elevation plane => z difference is zero\n aabb: new Aabb([wrap * numTiles, 0, 0], [(wrap + 1) * numTiles, numTiles, 0]),\n zoom: 0,\n x: 0,\n y: 0,\n wrap,\n fullyVisible: false\n };\n };\n\n // Do a depth-first traversal to find visible tiles and proper levels of detail\n const stack = [];\n const result = [];\n const maxZoom = z;\n const overscaledZ = options.reparseOverscaled ? actualZ : z;\n\n if (this._renderWorldCopies) {\n // Render copy of the globe thrice on both sides\n for (let i = 1; i <= 3; i++) {\n stack.push(newRootTile(-i));\n stack.push(newRootTile(i));\n }\n }\n\n stack.push(newRootTile(0));\n\n while (stack.length > 0) {\n const it = stack.pop();\n const x = it.x;\n const y = it.y;\n let fullyVisible = it.fullyVisible;\n\n // Visibility of a tile is not required if any of its ancestor if fully inside the frustum\n if (!fullyVisible) {\n const intersectResult = it.aabb.intersects(cameraFrustum);\n\n if (intersectResult === 0)\n continue;\n\n fullyVisible = intersectResult === 2;\n }\n\n const distanceX = it.aabb.distanceX(centerPoint);\n const distanceY = it.aabb.distanceY(centerPoint);\n const longestDim = Math.max(Math.abs(distanceX), Math.abs(distanceY));\n\n // We're using distance based heuristics to determine if a tile should be split into quadrants or not.\n // radiusOfMaxLvlLodInTiles defines that there's always a certain number of maxLevel tiles next to the map center.\n // Using the fact that a parent node in quadtree is twice the size of its children (per dimension)\n // we can define distance thresholds for each relative level:\n // f(k) = offset + 2 + 4 + 8 + 16 + ... + 2^k. This is the same as \"offset+2^(k+1)-2\"\n const distToSplit = radiusOfMaxLvlLodInTiles + (1 << (maxZoom - it.zoom)) - 2;\n\n // Have we reached the target depth or is the tile too far away to be any split further?\n if (it.zoom === maxZoom || (longestDim > distToSplit && it.zoom >= minZoom)) {\n result.push({\n tileID: new OverscaledTileID(it.zoom === maxZoom ? overscaledZ : it.zoom, it.wrap, it.zoom, x, y),\n distanceSq: vec2.sqrLen([centerPoint[0] - 0.5 - x, centerPoint[1] - 0.5 - y])\n });\n continue;\n }\n\n for (let i = 0; i < 4; i++) {\n const childX = (x << 1) + (i % 2);\n const childY = (y << 1) + (i >> 1);\n\n stack.push({aabb: it.aabb.quadrant(i), zoom: it.zoom + 1, x: childX, y: childY, wrap: it.wrap, fullyVisible});\n }\n }\n\n return result.sort((a, b) => a.distanceSq - b.distanceSq).map(a => a.tileID);\n }\n\n resize(width: number, height: number) {\n this.width = width;\n this.height = height;\n\n this.pixelsToGLUnits = [2 / width, -2 / height];\n this._constrain();\n this._calcMatrices();\n }\n\n get unmodified(): boolean { return this._unmodified; }\n\n zoomScale(zoom: number) { return Math.pow(2, zoom); }\n scaleZoom(scale: number) { return Math.log(scale) / Math.LN2; }\n\n project(lnglat: LngLat) {\n const lat = clamp(lnglat.lat, -this.maxValidLatitude, this.maxValidLatitude);\n return new Point(\n mercatorXfromLng(lnglat.lng) * this.worldSize,\n mercatorYfromLat(lat) * this.worldSize);\n }\n\n unproject(point: Point): LngLat {\n return new MercatorCoordinate(point.x / this.worldSize, point.y / this.worldSize).toLngLat();\n }\n\n get point(): Point { return this.project(this.center); }\n\n setLocationAtPoint(lnglat: LngLat, point: Point) {\n const a = this.pointCoordinate(point);\n const b = this.pointCoordinate(this.centerPoint);\n const loc = this.locationCoordinate(lnglat);\n const newCenter = new MercatorCoordinate(\n loc.x - (a.x - b.x),\n loc.y - (a.y - b.y));\n this.center = this.coordinateLocation(newCenter);\n if (this._renderWorldCopies) {\n this.center = this.center.wrap();\n }\n }\n\n /**\n * Given a location, return the screen point that corresponds to it\n * @param {LngLat} lnglat location\n * @returns {Point} screen point\n * @private\n */\n locationPoint(lnglat: LngLat) {\n return this.coordinatePoint(this.locationCoordinate(lnglat));\n }\n\n /**\n * Given a point on screen, return its lnglat\n * @param {Point} p screen point\n * @returns {LngLat} lnglat location\n * @private\n */\n pointLocation(p: Point) {\n return this.coordinateLocation(this.pointCoordinate(p));\n }\n\n /**\n * Given a geographical lnglat, return an unrounded\n * coordinate that represents it at this transform's zoom level.\n * @param {LngLat} lnglat\n * @returns {Coordinate}\n * @private\n */\n locationCoordinate(lnglat: LngLat) {\n return MercatorCoordinate.fromLngLat(lnglat);\n }\n\n /**\n * Given a Coordinate, return its geographical position.\n * @param {Coordinate} coord\n * @returns {LngLat} lnglat\n * @private\n */\n coordinateLocation(coord: MercatorCoordinate) {\n return coord.toLngLat();\n }\n\n pointCoordinate(p: Point) {\n const targetZ = 0;\n // since we don't know the correct projected z value for the point,\n // unproject two points to get a line and then find the point on that\n // line with z=0\n\n const coord0 = [p.x, p.y, 0, 1];\n const coord1 = [p.x, p.y, 1, 1];\n\n vec4.transformMat4(coord0, coord0, this.pixelMatrixInverse);\n vec4.transformMat4(coord1, coord1, this.pixelMatrixInverse);\n\n const w0 = coord0[3];\n const w1 = coord1[3];\n const x0 = coord0[0] / w0;\n const x1 = coord1[0] / w1;\n const y0 = coord0[1] / w0;\n const y1 = coord1[1] / w1;\n const z0 = coord0[2] / w0;\n const z1 = coord1[2] / w1;\n\n const t = z0 === z1 ? 0 : (targetZ - z0) / (z1 - z0);\n\n return new MercatorCoordinate(\n interpolate(x0, x1, t) / this.worldSize,\n interpolate(y0, y1, t) / this.worldSize);\n }\n\n /**\n * Given a coordinate, return the screen point that corresponds to it\n * @param {Coordinate} coord\n * @returns {Point} screen point\n * @private\n */\n coordinatePoint(coord: MercatorCoordinate) {\n const p = [coord.x * this.worldSize, coord.y * this.worldSize, 0, 1];\n vec4.transformMat4(p, p, this.pixelMatrix);\n return new Point(p[0] / p[3], p[1] / p[3]);\n }\n\n /**\n * Returns the map's geographical bounds. When the bearing or pitch is non-zero, the visible region is not\n * an axis-aligned rectangle, and the result is the smallest bounds that encompasses the visible region.\n * @returns {LngLatBounds} Returns a {@link LngLatBounds} object describing the map's geographical bounds.\n */\n getBounds(): LngLatBounds {\n return new LngLatBounds()\n .extend(this.pointLocation(new Point(0, 0)))\n .extend(this.pointLocation(new Point(this.width, 0)))\n .extend(this.pointLocation(new Point(this.width, this.height)))\n .extend(this.pointLocation(new Point(0, this.height)));\n }\n\n /**\n * Returns the maximum geographical bounds the map is constrained to, or `null` if none set.\n * @returns {LngLatBounds} {@link LngLatBounds}\n */\n getMaxBounds(): LngLatBounds | null {\n if (!this.latRange || this.latRange.length !== 2 ||\n !this.lngRange || this.lngRange.length !== 2) return null;\n\n return new LngLatBounds([this.lngRange[0], this.latRange[0]], [this.lngRange[1], this.latRange[1]]);\n }\n\n /**\n * Sets or clears the map's geographical constraints.\n * @param {LngLatBounds} bounds A {@link LngLatBounds} object describing the new geographic boundaries of the map.\n */\n setMaxBounds(bounds?: LngLatBounds) {\n if (bounds) {\n this.lngRange = [bounds.getWest(), bounds.getEast()];\n this.latRange = [bounds.getSouth(), bounds.getNorth()];\n this._constrain();\n } else {\n this.lngRange = null;\n this.latRange = [-this.maxValidLatitude, this.maxValidLatitude];\n }\n }\n\n /**\n * Calculate the posMatrix that, given a tile coordinate, would be used to display the tile on a map.\n * @param {UnwrappedTileID} unwrappedTileID;\n * @private\n */\n calculatePosMatrix(unwrappedTileID: UnwrappedTileID, aligned: boolean = false): Float32Array {\n const posMatrixKey = unwrappedTileID.key;\n const cache = aligned ? this._alignedPosMatrixCache : this._posMatrixCache;\n if (cache[posMatrixKey]) {\n return cache[posMatrixKey];\n }\n\n const canonical = unwrappedTileID.canonical;\n const scale = this.worldSize / this.zoomScale(canonical.z);\n const unwrappedX = canonical.x + Math.pow(2, canonical.z) * unwrappedTileID.wrap;\n\n const posMatrix = mat4.identity(new Float64Array(16));\n mat4.translate(posMatrix, posMatrix, [unwrappedX * scale, canonical.y * scale, 0]);\n mat4.scale(posMatrix, posMatrix, [scale / EXTENT, scale / EXTENT, 1]);\n mat4.multiply(posMatrix, aligned ? this.alignedProjMatrix : this.projMatrix, posMatrix);\n\n cache[posMatrixKey] = new Float32Array(posMatrix);\n return cache[posMatrixKey];\n }\n\n customLayerMatrix(): Array {\n return this.mercatorMatrix.slice();\n }\n\n _constrain() {\n if (!this.center || !this.width || !this.height || this._constraining) return;\n\n this._constraining = true;\n\n let minY = -90;\n let maxY = 90;\n let minX = -180;\n let maxX = 180;\n let sy, sx, x2, y2;\n const size = this.size,\n unmodified = this._unmodified;\n\n if (this.latRange) {\n const latRange = this.latRange;\n minY = mercatorYfromLat(latRange[1]) * this.worldSize;\n maxY = mercatorYfromLat(latRange[0]) * this.worldSize;\n sy = maxY - minY < size.y ? size.y / (maxY - minY) : 0;\n }\n\n if (this.lngRange) {\n const lngRange = this.lngRange;\n minX = mercatorXfromLng(lngRange[0]) * this.worldSize;\n maxX = mercatorXfromLng(lngRange[1]) * this.worldSize;\n sx = maxX - minX < size.x ? size.x / (maxX - minX) : 0;\n }\n\n const point = this.point;\n\n // how much the map should scale to fit the screen into given latitude/longitude ranges\n const s = Math.max(sx || 0, sy || 0);\n\n if (s) {\n this.center = this.unproject(new Point(\n sx ? (maxX + minX) / 2 : point.x,\n sy ? (maxY + minY) / 2 : point.y));\n this.zoom += this.scaleZoom(s);\n this._unmodified = unmodified;\n this._constraining = false;\n return;\n }\n\n if (this.latRange) {\n const y = point.y,\n h2 = size.y / 2;\n\n if (y - h2 < minY) y2 = minY + h2;\n if (y + h2 > maxY) y2 = maxY - h2;\n }\n\n if (this.lngRange) {\n const x = point.x,\n w2 = size.x / 2;\n\n if (x - w2 < minX) x2 = minX + w2;\n if (x + w2 > maxX) x2 = maxX - w2;\n }\n\n // pan the map if the screen goes off the range\n if (x2 !== undefined || y2 !== undefined) {\n this.center = this.unproject(new Point(\n x2 !== undefined ? x2 : point.x,\n y2 !== undefined ? y2 : point.y));\n }\n\n this._unmodified = unmodified;\n this._constraining = false;\n }\n\n _calcMatrices() {\n if (!this.height) return;\n\n const halfFov = this._fov / 2;\n const offset = this.centerOffset;\n this.cameraToCenterDistance = 0.5 / Math.tan(halfFov) * this.height;\n\n // Find the distance from the center point [width/2 + offset.x, height/2 + offset.y] to the\n // center top point [width/2 + offset.x, 0] in Z units, using the law of sines.\n // 1 Z unit is equivalent to 1 horizontal px at the center of the map\n // (the distance between[width/2, height/2] and [width/2 + 1, height/2])\n const groundAngle = Math.PI / 2 + this._pitch;\n const fovAboveCenter = this._fov * (0.5 + offset.y / this.height);\n const topHalfSurfaceDistance = Math.sin(fovAboveCenter) * this.cameraToCenterDistance / Math.sin(clamp(Math.PI - groundAngle - fovAboveCenter, 0.01, Math.PI - 0.01));\n const point = this.point;\n const x = point.x, y = point.y;\n\n // Calculate z distance of the farthest fragment that should be rendered.\n const furthestDistance = Math.cos(Math.PI / 2 - this._pitch) * topHalfSurfaceDistance + this.cameraToCenterDistance;\n // Add a bit extra to avoid precision problems when a fragment's distance is exactly `furthestDistance`\n const farZ = furthestDistance * 1.01;\n\n // The larger the value of nearZ is\n // - the more depth precision is available for features (good)\n // - clipping starts appearing sooner when the camera is close to 3d features (bad)\n //\n // Smaller values worked well for mapbox-gl-js but deckgl was encountering precision issues\n // when rendering it's layers using custom layers. This value was experimentally chosen and\n // seems to solve z-fighting issues in deckgl while not clipping buildings too close to the camera.\n const nearZ = this.height / 50;\n\n // matrix for conversion from location to GL coordinates (-1 .. 1)\n let m = new Float64Array(16);\n mat4.perspective(m, this._fov, this.width / this.height, nearZ, farZ);\n\n //Apply center of perspective offset\n m[8] = -offset.x * 2 / this.width;\n m[9] = offset.y * 2 / this.height;\n\n mat4.scale(m, m, [1, -1, 1]);\n mat4.translate(m, m, [0, 0, -this.cameraToCenterDistance]);\n mat4.rotateX(m, m, this._pitch);\n mat4.rotateZ(m, m, this.angle);\n mat4.translate(m, m, [-x, -y, 0]);\n\n // The mercatorMatrix can be used to transform points from mercator coordinates\n // ([0, 0] nw, [1, 1] se) to GL coordinates.\n this.mercatorMatrix = mat4.scale([], m, [this.worldSize, this.worldSize, this.worldSize]);\n\n // scale vertically to meters per pixel (inverse of ground resolution):\n mat4.scale(m, m, [1, 1, mercatorZfromAltitude(1, this.center.lat) * this.worldSize, 1]);\n\n this.projMatrix = m;\n this.invProjMatrix = mat4.invert([], this.projMatrix);\n\n // Make a second projection matrix that is aligned to a pixel grid for rendering raster tiles.\n // We're rounding the (floating point) x/y values to achieve to avoid rendering raster images to fractional\n // coordinates. Additionally, we adjust by half a pixel in either direction in case that viewport dimension\n // is an odd integer to preserve rendering to the pixel grid. We're rotating this shift based on the angle\n // of the transformation so that 0°, 90°, 180°, and 270° rasters are crisp, and adjust the shift so that\n // it is always <= 0.5 pixels.\n const xShift = (this.width % 2) / 2, yShift = (this.height % 2) / 2,\n angleCos = Math.cos(this.angle), angleSin = Math.sin(this.angle),\n dx = x - Math.round(x) + angleCos * xShift + angleSin * yShift,\n dy = y - Math.round(y) + angleCos * yShift + angleSin * xShift;\n const alignedM = new Float64Array(m);\n mat4.translate(alignedM, alignedM, [ dx > 0.5 ? dx - 1 : dx, dy > 0.5 ? dy - 1 : dy, 0 ]);\n this.alignedProjMatrix = alignedM;\n\n m = mat4.create();\n mat4.scale(m, m, [this.width / 2, -this.height / 2, 1]);\n mat4.translate(m, m, [1, -1, 0]);\n this.labelPlaneMatrix = m;\n\n m = mat4.create();\n mat4.scale(m, m, [1, -1, 1]);\n mat4.translate(m, m, [-1, -1, 0]);\n mat4.scale(m, m, [2 / this.width, 2 / this.height, 1]);\n this.glCoordMatrix = m;\n\n // matrix for conversion from location to screen coordinates\n this.pixelMatrix = mat4.multiply(new Float64Array(16), this.labelPlaneMatrix, this.projMatrix);\n\n // inverse matrix for conversion from screen coordinaes to location\n m = mat4.invert(new Float64Array(16), this.pixelMatrix);\n if (!m) throw new Error(\"failed to invert matrix\");\n this.pixelMatrixInverse = m;\n\n this._posMatrixCache = {};\n this._alignedPosMatrixCache = {};\n }\n\n maxPitchScaleFactor() {\n // calcMatrices hasn't run yet\n if (!this.pixelMatrixInverse) return 1;\n\n const coord = this.pointCoordinate(new Point(0, 0));\n const p = [coord.x * this.worldSize, coord.y * this.worldSize, 0, 1];\n const topPoint = vec4.transformMat4(p, p, this.pixelMatrix);\n return topPoint[3] / this.cameraToCenterDistance;\n }\n\n /*\n * The camera looks at the map from a 3D (lng, lat, altitude) location. Let's use `cameraLocation`\n * as the name for the location under the camera and on the surface of the earth (lng, lat, 0).\n * `cameraPoint` is the projected position of the `cameraLocation`.\n *\n * This point is useful to us because only fill-extrusions that are between `cameraPoint` and\n * the query point on the surface of the earth can extend and intersect the query.\n *\n * When the map is not pitched the `cameraPoint` is equivalent to the center of the map because\n * the camera is right above the center of the map.\n */\n getCameraPoint() {\n const pitch = this._pitch;\n const yOffset = Math.tan(pitch) * (this.cameraToCenterDistance || 1);\n return this.centerPoint.add(new Point(0, yOffset));\n }\n\n /*\n * When the map is pitched, some of the 3D features that intersect a query will not intersect\n * the query at the surface of the earth. Instead the feature may be closer and only intersect\n * the query because it extrudes into the air.\n *\n * This returns a geometry that includes all of the original query as well as all possible ares of the\n * screen where the *base* of a visible extrusion could be.\n * - For point queries, the line from the query point to the \"camera point\"\n * - For other geometries, the envelope of the query geometry and the \"camera point\"\n */\n getCameraQueryGeometry(queryGeometry: Array): Array {\n const c = this.getCameraPoint();\n\n if (queryGeometry.length === 1) {\n return [queryGeometry[0], c];\n } else {\n let minX = c.x;\n let minY = c.y;\n let maxX = c.x;\n let maxY = c.y;\n for (const p of queryGeometry) {\n minX = Math.min(minX, p.x);\n minY = Math.min(minY, p.y);\n maxX = Math.max(maxX, p.x);\n maxY = Math.max(maxY, p.y);\n }\n return [\n new Point(minX, minY),\n new Point(maxX, minY),\n new Point(maxX, maxY),\n new Point(minX, maxY),\n new Point(minX, minY)\n ];\n }\n }\n}\n\nexport default Transform;\n", "// @flow\n\nimport {bindAll} from '../util/util';\nimport window from '../util/window';\nimport throttle from '../util/throttle';\n\nimport type Map from './map';\n\n/*\n * Adds the map's position to its page's location hash.\n * Passed as an option to the map object.\n *\n * @returns {Hash} `this`\n */\nclass Hash {\n _map: Map;\n _updateHash: () => ?TimeoutID;\n _hashName: ?string;\n\n constructor(hashName: ?string) {\n this._hashName = hashName && encodeURIComponent(hashName);\n bindAll([\n '_getCurrentHash',\n '_onHashChange',\n '_updateHash'\n ], this);\n\n // Mobile Safari doesn't allow updating the hash more than 100 times per 30 seconds.\n this._updateHash = throttle(this._updateHashUnthrottled.bind(this), 30 * 1000 / 100);\n }\n\n /*\n * Map element to listen for coordinate changes\n *\n * @param {Object} map\n * @returns {Hash} `this`\n */\n addTo(map: Map) {\n this._map = map;\n window.addEventListener('hashchange', this._onHashChange, false);\n this._map.on('moveend', this._updateHash);\n return this;\n }\n\n /*\n * Removes hash\n *\n * @returns {Popup} `this`\n */\n remove() {\n window.removeEventListener('hashchange', this._onHashChange, false);\n this._map.off('moveend', this._updateHash);\n clearTimeout(this._updateHash());\n\n delete this._map;\n return this;\n }\n\n getHashString(mapFeedback?: boolean) {\n const center = this._map.getCenter(),\n zoom = Math.round(this._map.getZoom() * 100) / 100,\n // derived from equation: 512px * 2^z / 360 / 10^d < 0.5px\n precision = Math.ceil((zoom * Math.LN2 + Math.log(512 / 360 / 0.5)) / Math.LN10),\n m = Math.pow(10, precision),\n lng = Math.round(center.lng * m) / m,\n lat = Math.round(center.lat * m) / m,\n bearing = this._map.getBearing(),\n pitch = this._map.getPitch();\n let hash = '';\n if (mapFeedback) {\n // new map feedback site has some constraints that don't allow\n // us to use the same hash format as we do for the Map hash option.\n hash += `/${lng}/${lat}/${zoom}`;\n } else {\n hash += `${zoom}/${lat}/${lng}`;\n }\n\n if (bearing || pitch) hash += (`/${Math.round(bearing * 10) / 10}`);\n if (pitch) hash += (`/${Math.round(pitch)}`);\n\n if (this._hashName) {\n const hashName = this._hashName;\n let found = false;\n const parts = window.location.hash.slice(1).split('&').map(part => {\n const key = part.split('=')[0];\n if (key === hashName) {\n found = true;\n return `${key}=${hash}`;\n }\n return part;\n }).filter(a => a);\n if (!found) {\n parts.push(`${hashName}=${hash}`);\n }\n return `#${parts.join('&')}`;\n }\n\n return `#${hash}`;\n }\n\n _getCurrentHash() {\n // Get the current hash from location, stripped from its number sign\n const hash = window.location.hash.replace('#', '');\n if (this._hashName) {\n // Split the parameter-styled hash into parts and find the value we need\n let keyval;\n hash.split('&').map(\n part => part.split('=')\n ).forEach(part => {\n if (part[0] === this._hashName) {\n keyval = part;\n }\n });\n return (keyval ? keyval[1] || '' : '').split('/');\n }\n return hash.split('/');\n }\n\n _onHashChange() {\n const loc = this._getCurrentHash();\n if (loc.length >= 3 && !loc.some(v => isNaN(v))) {\n const bearing = this._map.dragRotate.isEnabled() && this._map.touchZoomRotate.isEnabled() ? +(loc[3] || 0) : this._map.getBearing();\n this._map.jumpTo({\n center: [+loc[2], +loc[1]],\n zoom: +loc[0],\n bearing,\n pitch: +(loc[4] || 0)\n });\n return true;\n }\n return false;\n }\n\n _updateHashUnthrottled() {\n // Replace if already present, else append the updated hash string\n const location = window.location.href.replace(/(#.+)?$/, this.getHashString());\n try {\n window.history.replaceState(window.history.state, null, location);\n } catch (SecurityError) {\n // IE11 does not allow this if the page is within an iframe created\n // with iframe.contentWindow.document.write(...).\n // https://github.com/mapbox/mapbox-gl-js/issues/7410\n }\n }\n\n}\n\nexport default Hash;\n", "// @flow strict\n\n/**\n * Throttle the given function to run at most every `period` milliseconds.\n * @private\n */\nexport default function throttle(fn: () => void, time: number): () => ?TimeoutID {\n let pending = false;\n let timerId: ?TimeoutID = null;\n\n const later = () => {\n timerId = null;\n if (pending) {\n fn();\n timerId = setTimeout(later, time);\n pending = false;\n }\n };\n\n return () => {\n pending = true;\n if (!timerId) {\n later();\n }\n return timerId;\n };\n}\n", "// @flow\n\nimport browser from '../util/browser';\nimport type Map from './map';\nimport {bezier, clamp, extend} from '../util/util';\nimport Point from '@mapbox/point-geometry';\nimport type {DragPanOptions} from './handler/shim/drag_pan';\n\nconst defaultInertiaOptions = {\n linearity: 0.3,\n easing: bezier(0, 0, 0.3, 1),\n};\n\nconst defaultPanInertiaOptions = extend({\n deceleration: 2500,\n maxSpeed: 1400\n}, defaultInertiaOptions);\n\nconst defaultZoomInertiaOptions = extend({\n deceleration: 20,\n maxSpeed: 1400\n}, defaultInertiaOptions);\n\nconst defaultBearingInertiaOptions = extend({\n deceleration: 1000,\n maxSpeed: 360\n}, defaultInertiaOptions);\n\nconst defaultPitchInertiaOptions = extend({\n deceleration: 1000,\n maxSpeed: 90\n}, defaultInertiaOptions);\n\nexport type InertiaOptions = {\n linearity: number;\n easing: (t: number) => number;\n deceleration: number;\n maxSpeed: number;\n};\n\nexport type InputEvent = MouseEvent | TouchEvent | KeyboardEvent | WheelEvent;\n\nexport default class HandlerInertia {\n _map: Map;\n _inertiaBuffer: Array<{ time: number, settings: Object }>;\n\n constructor(map: Map) {\n this._map = map;\n this.clear();\n }\n\n clear() {\n this._inertiaBuffer = [];\n }\n\n record(settings: any) {\n this._drainInertiaBuffer();\n this._inertiaBuffer.push({time: browser.now(), settings});\n }\n\n _drainInertiaBuffer() {\n const inertia = this._inertiaBuffer,\n now = browser.now(),\n cutoff = 160; //msec\n\n while (inertia.length > 0 && now - inertia[0].time > cutoff)\n inertia.shift();\n }\n\n _onMoveEnd(panInertiaOptions?: DragPanOptions) {\n this._drainInertiaBuffer();\n if (this._inertiaBuffer.length < 2) {\n return;\n }\n\n const deltas = {\n zoom: 0,\n bearing: 0,\n pitch: 0,\n pan: new Point(0, 0),\n pinchAround: undefined,\n around: undefined\n };\n\n for (const {settings} of this._inertiaBuffer) {\n deltas.zoom += settings.zoomDelta || 0;\n deltas.bearing += settings.bearingDelta || 0;\n deltas.pitch += settings.pitchDelta || 0;\n if (settings.panDelta) deltas.pan._add(settings.panDelta);\n if (settings.around) deltas.around = settings.around;\n if (settings.pinchAround) deltas.pinchAround = settings.pinchAround;\n }\n\n const lastEntry = this._inertiaBuffer[this._inertiaBuffer.length - 1];\n const duration = (lastEntry.time - this._inertiaBuffer[0].time);\n\n const easeOptions = {};\n\n if (deltas.pan.mag()) {\n const result = calculateEasing(deltas.pan.mag(), duration, extend({}, defaultPanInertiaOptions, panInertiaOptions || {}));\n easeOptions.offset = deltas.pan.mult(result.amount / deltas.pan.mag());\n easeOptions.center = this._map.transform.center;\n extendDuration(easeOptions, result);\n }\n\n if (deltas.zoom) {\n const result = calculateEasing(deltas.zoom, duration, defaultZoomInertiaOptions);\n easeOptions.zoom = this._map.transform.zoom + result.amount;\n extendDuration(easeOptions, result);\n }\n\n if (deltas.bearing) {\n const result = calculateEasing(deltas.bearing, duration, defaultBearingInertiaOptions);\n easeOptions.bearing = this._map.transform.bearing + clamp(result.amount, -179, 179);\n extendDuration(easeOptions, result);\n }\n\n if (deltas.pitch) {\n const result = calculateEasing(deltas.pitch, duration, defaultPitchInertiaOptions);\n easeOptions.pitch = this._map.transform.pitch + result.amount;\n extendDuration(easeOptions, result);\n }\n\n if (easeOptions.zoom || easeOptions.bearing) {\n const last = deltas.pinchAround === undefined ? deltas.around : deltas.pinchAround;\n easeOptions.around = last ? this._map.unproject(last) : this._map.getCenter();\n }\n\n this.clear();\n return extend(easeOptions, {\n noMoveStart: true\n });\n\n }\n}\n\n// Unfortunately zoom, bearing, etc can't have different durations and easings so\n// we need to choose one. We use the longest duration and it's corresponding easing.\nfunction extendDuration(easeOptions, result) {\n if (!easeOptions.duration || easeOptions.duration < result.duration) {\n easeOptions.duration = result.duration;\n easeOptions.easing = result.easing;\n }\n}\n\nfunction calculateEasing(amount, inertiaDuration: number, inertiaOptions) {\n const {maxSpeed, linearity, deceleration} = inertiaOptions;\n const speed = clamp(\n amount * linearity / (inertiaDuration / 1000),\n -maxSpeed,\n maxSpeed);\n const duration = Math.abs(speed) / (deceleration * linearity);\n return {\n easing: inertiaOptions.easing,\n duration: duration * 1000,\n amount: speed * (duration / 2)\n };\n}\n", "// @flow\n\nimport {Event} from '../util/evented';\n\nimport DOM from '../util/dom';\nimport Point from '@mapbox/point-geometry';\nimport {extend} from '../util/util';\n\nimport type Map from './map';\nimport type LngLat from '../geo/lng_lat';\n\n/**\n * `MapMouseEvent` is the event type for mouse-related map events.\n * @extends {Object}\n * @example\n * // The `click` event is an example of a `MapMouseEvent`.\n * // Set up an event listener on the map.\n * map.on('click', function(e) {\n * // The event object (e) contains information like the\n * // coordinates of the point on the map that was clicked.\n * console.log('A click event has occurred at ' + e.lngLat);\n * });\n */\nexport class MapMouseEvent extends Event {\n /**\n * The event type (one of {@link Map.event:mousedown},\n * {@link Map.event:mouseup},\n * {@link Map.event:click},\n * {@link Map.event:dblclick},\n * {@link Map.event:mousemove},\n * {@link Map.event:mouseover},\n * {@link Map.event:mouseenter},\n * {@link Map.event:mouseleave},\n * {@link Map.event:mouseout},\n * {@link Map.event:contextmenu}).\n */\n type: 'mousedown'\n | 'mouseup'\n | 'click'\n | 'dblclick'\n | 'mousemove'\n | 'mouseover'\n | 'mouseenter'\n | 'mouseleave'\n | 'mouseout'\n | 'contextmenu';\n\n /**\n * The `Map` object that fired the event.\n */\n target: Map;\n\n /**\n * The DOM event which caused the map event.\n */\n originalEvent: MouseEvent;\n\n /**\n * The pixel coordinates of the mouse cursor, relative to the map and measured from the top left corner.\n */\n point: Point;\n\n /**\n * The geographic location on the map of the mouse cursor.\n */\n lngLat: LngLat;\n\n /**\n * Prevents subsequent default processing of the event by the map.\n *\n * Calling this method will prevent the following default map behaviors:\n *\n * * On `mousedown` events, the behavior of {@link DragPanHandler}\n * * On `mousedown` events, the behavior of {@link DragRotateHandler}\n * * On `mousedown` events, the behavior of {@link BoxZoomHandler}\n * * On `dblclick` events, the behavior of {@link DoubleClickZoomHandler}\n *\n */\n preventDefault() {\n this._defaultPrevented = true;\n }\n\n /**\n * `true` if `preventDefault` has been called.\n * @private\n */\n get defaultPrevented(): boolean {\n return this._defaultPrevented;\n }\n\n _defaultPrevented: boolean;\n\n /**\n * @private\n */\n constructor(type: string, map: Map, originalEvent: MouseEvent, data: Object = {}) {\n const point = DOM.mousePos(map.getCanvasContainer(), originalEvent);\n const lngLat = map.unproject(point);\n super(type, extend({point, lngLat, originalEvent}, data));\n this._defaultPrevented = false;\n this.target = map;\n }\n}\n\n/**\n * `MapTouchEvent` is the event type for touch-related map events.\n * @extends {Object}\n */\nexport class MapTouchEvent extends Event {\n /**\n * The event type.\n */\n type: 'touchstart'\n | 'touchend'\n | 'touchcancel';\n\n /**\n * The `Map` object that fired the event.\n */\n target: Map;\n\n /**\n * The DOM event which caused the map event.\n */\n originalEvent: TouchEvent;\n\n /**\n * The geographic location on the map of the center of the touch event points.\n */\n lngLat: LngLat;\n\n /**\n * The pixel coordinates of the center of the touch event points, relative to the map and measured from the top left\n * corner.\n */\n point: Point;\n\n /**\n * The array of pixel coordinates corresponding to a\n * [touch event's `touches`](https://developer.mozilla.org/en-US/docs/Web/API/TouchEvent/touches) property.\n */\n points: Array;\n\n /**\n * The geographical locations on the map corresponding to a\n * [touch event's `touches`](https://developer.mozilla.org/en-US/docs/Web/API/TouchEvent/touches) property.\n */\n lngLats: Array;\n\n /**\n * Prevents subsequent default processing of the event by the map.\n *\n * Calling this method will prevent the following default map behaviors:\n *\n * * On `touchstart` events, the behavior of {@link DragPanHandler}\n * * On `touchstart` events, the behavior of {@link TouchZoomRotateHandler}\n *\n */\n preventDefault() {\n this._defaultPrevented = true;\n }\n\n /**\n * `true` if `preventDefault` has been called.\n * @private\n */\n get defaultPrevented(): boolean {\n return this._defaultPrevented;\n }\n\n _defaultPrevented: boolean;\n\n /**\n * @private\n */\n constructor(type: string, map: Map, originalEvent: TouchEvent) {\n const touches = type === \"touchend\" ? originalEvent.changedTouches : originalEvent.touches;\n const points = DOM.touchPos(map.getCanvasContainer(), touches);\n const lngLats = points.map((t) => map.unproject(t));\n const point = points.reduce((prev, curr, i, arr) => {\n return prev.add(curr.div(arr.length));\n }, new Point(0, 0));\n const lngLat = map.unproject(point);\n super(type, {points, point, lngLats, lngLat, originalEvent});\n this._defaultPrevented = false;\n }\n}\n\n/**\n * `MapWheelEvent` is the event type for the `wheel` map event.\n * @extends {Object}\n */\nexport class MapWheelEvent extends Event {\n /**\n * The event type.\n */\n type: 'wheel';\n\n /**\n * The `Map` object that fired the event.\n */\n target: Map;\n\n /**\n * The DOM event which caused the map event.\n */\n originalEvent: WheelEvent;\n\n /**\n * Prevents subsequent default processing of the event by the map.\n *\n * Calling this method will prevent the the behavior of {@link ScrollZoomHandler}.\n */\n preventDefault() {\n this._defaultPrevented = true;\n }\n\n /**\n * `true` if `preventDefault` has been called.\n * @private\n */\n get defaultPrevented(): boolean {\n return this._defaultPrevented;\n }\n\n _defaultPrevented: boolean;\n\n /**\n * @private\n */\n constructor(type: string, map: Map, originalEvent: WheelEvent) {\n super(type, {originalEvent});\n this._defaultPrevented = false;\n }\n}\n\n/**\n * A `MapBoxZoomEvent` is the event type for the boxzoom-related map events emitted by the {@link BoxZoomHandler}.\n *\n * @typedef {Object} MapBoxZoomEvent\n * @property {MouseEvent} originalEvent The DOM event that triggered the boxzoom event. Can be a `MouseEvent` or `KeyboardEvent`\n * @property {string} type The type of boxzoom event. One of `boxzoomstart`, `boxzoomend` or `boxzoomcancel`\n * @property {Map} target The `Map` instance that triggerred the event\n */\nexport type MapBoxZoomEvent = {\n type: 'boxzoomstart'\n | 'boxzoomend'\n | 'boxzoomcancel',\n target: Map,\n originalEvent: MouseEvent\n};\n\n/**\n * A `MapDataEvent` object is emitted with the {@link Map.event:data}\n * and {@link Map.event:dataloading} events. Possible values for\n * `dataType`s are:\n *\n * - `'source'`: The non-tile data associated with any source\n * - `'style'`: The [style](https://www.mapbox.com/mapbox-gl-style-spec/) used by the map\n *\n * @typedef {Object} MapDataEvent\n * @property {string} type The event type.\n * @property {string} dataType The type of data that has changed. One of `'source'`, `'style'`.\n * @property {boolean} [isSourceLoaded] True if the event has a `dataType` of `source` and the source has no outstanding network requests.\n * @property {Object} [source] The [style spec representation of the source](https://www.mapbox.com/mapbox-gl-style-spec/#sources) if the event has a `dataType` of `source`.\n * @property {string} [sourceDataType] Included if the event has a `dataType` of `source` and the event signals\n * that internal data has been received or changed. Possible values are `metadata`, `content` and `visibility`.\n * @property {Object} [tile] The tile being loaded or changed, if the event has a `dataType` of `source` and\n * the event is related to loading of a tile.\n * @property {Coordinate} [coord] The coordinate of the tile if the event has a `dataType` of `source` and\n * the event is related to loading of a tile.\n * @example\n * // The sourcedata event is an example of MapDataEvent.\n * // Set up an event listener on the map.\n * map.on('sourcedata', function(e) {\n * if (e.isSourceLoaded) {\n * // Do something when the source has finished loading\n * }\n * });\n */\nexport type MapDataEvent = {\n type: string,\n dataType: string\n};\n\nexport type MapContextEvent = {\n type: 'webglcontextlost' | 'webglcontextrestored',\n originalEvent: WebGLContextEvent\n}\n\nexport type MapEvent =\n /**\n * Fired when a pointing device (usually a mouse) is pressed within the map.\n *\n * **Note:** This event is compatible with the optional `layerId` parameter.\n * If `layerId` is included as the second argument in {@link Map#on}, the event listener will fire only when the\n * the cursor is pressed while inside a visible portion of the specifed layer.\n *\n * @event mousedown\n * @memberof Map\n * @instance\n * @property {MapMouseEvent} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener\n * map.on('mousedown', function() {\n * console.log('A mousedown event has occurred.');\n * });\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener for a specific layer\n * map.on('mousedown', 'poi-label', function() {\n * console.log('A mousedown event has occurred on a visible portion of the poi-label layer.');\n * });\n * @see [Highlight features within a bounding box](https://docs.mapbox.com/mapbox-gl-js/example/using-box-queryrenderedfeatures/)\n * @see [Create a draggable point](https://docs.mapbox.com/mapbox-gl-js/example/drag-a-point/)\n */\n | 'mousedown'\n\n /**\n * Fired when a pointing device (usually a mouse) is released within the map.\n *\n * **Note:** This event is compatible with the optional `layerId` parameter.\n * If `layerId` is included as the second argument in {@link Map#on}, the event listener will fire only when the\n * the cursor is released while inside a visible portion of the specifed layer.\n *\n * @event mouseup\n * @memberof Map\n * @instance\n * @property {MapMouseEvent} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener\n * map.on('mouseup', function() {\n * console.log('A mouseup event has occurred.');\n * });\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener for a specific layer\n * map.on('mouseup', 'poi-label', function() {\n * console.log('A mouseup event has occurred on a visible portion of the poi-label layer.');\n * });\n * @see [Highlight features within a bounding box](https://docs.mapbox.com/mapbox-gl-js/example/using-box-queryrenderedfeatures/)\n * @see [Create a draggable point](https://docs.mapbox.com/mapbox-gl-js/example/drag-a-point/)\n */\n | 'mouseup'\n\n /**\n * Fired when a pointing device (usually a mouse) is moved within the map.\n * As you move the cursor across a web page containing a map,\n * the event will fire each time it enters the map or any child elements.\n *\n * **Note:** This event is compatible with the optional `layerId` parameter.\n * If `layerId` is included as the second argument in {@link Map#on}, the event listener will fire only when the\n * the cursor is moved inside a visible portion of the specifed layer.\n *\n * @event mouseover\n * @memberof Map\n * @instance\n * @property {MapMouseEvent} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener\n * map.on('mouseover', function() {\n * console.log('A mouseover event has occurred.');\n * });\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener for a specific layer\n * map.on('mouseover', 'poi-label', function() {\n * console.log('A mouseover event has occurred on a visible portion of the poi-label layer.');\n * });\n * @see [Get coordinates of the mouse pointer](https://www.mapbox.com/mapbox-gl-js/example/mouse-position/)\n * @see [Highlight features under the mouse pointer](https://www.mapbox.com/mapbox-gl-js/example/hover-styles/)\n * @see [Display a popup on hover](https://www.mapbox.com/mapbox-gl-js/example/popup-on-hover/)\n */\n | 'mouseover'\n\n /**\n * Fired when a pointing device (usually a mouse) is moved while the cursor is inside the map.\n * As you move the cursor across the map, the event will fire every time the cursor changes position within the map.\n *\n * **Note:** This event is compatible with the optional `layerId` parameter.\n * If `layerId` is included as the second argument in {@link Map#on}, the event listener will fire only when the\n * the cursor is inside a visible portion of the specified layer.\n *\n * @event mousemove\n * @memberof Map\n * @instance\n * @property {MapMouseEvent} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener\n * map.on('mousemove', function() {\n * console.log('A mousemove event has occurred.');\n * });\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener for a specific layer\n * map.on('mousemove', 'poi-label', function() {\n * console.log('A mousemove event has occurred on a visible portion of the poi-label layer.');\n * });\n * @see [Get coordinates of the mouse pointer](https://www.mapbox.com/mapbox-gl-js/example/mouse-position/)\n * @see [Highlight features under the mouse pointer](https://www.mapbox.com/mapbox-gl-js/example/hover-styles/)\n * @see [Display a popup on over](https://www.mapbox.com/mapbox-gl-js/example/popup-on-hover/)\n */\n | 'mousemove'\n\n /**\n * Fired when a pointing device (usually a mouse) is pressed and released at the same point on the map.\n *\n * **Note:** This event is compatible with the optional `layerId` parameter.\n * If `layerId` is included as the second argument in {@link Map#on}, the event listener will fire only when the\n * point that is pressed and released contains a visible portion of the specifed layer.\n *\n * @event click\n * @memberof Map\n * @instance\n * @property {MapMouseEvent} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener\n * map.on('click', function(e) {\n * console.log('A click event has occurred at ' + e.lngLat);\n * });\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener for a specific layer\n * map.on('click', 'poi-label', function(e) {\n * console.log('A click event has occurred on a visible portion of the poi-label layer at ' + e.lngLat);\n * });\n * @see [Measure distances](https://www.mapbox.com/mapbox-gl-js/example/measure/)\n * @see [Center the map on a clicked symbol](https://www.mapbox.com/mapbox-gl-js/example/center-on-symbol/)\n */\n | 'click'\n\n /**\n * Fired when a pointing device (usually a mouse) is pressed and released twice at the same point on\n * the map in rapid succession.\n *\n * **Note:** This event is compatible with the optional `layerId` parameter.\n * If `layerId` is included as the second argument in {@link Map#on}, the event listener will fire only\n * when the point that is clicked twice contains a visible portion of the specifed layer.\n *\n * @event dblclick\n * @memberof Map\n * @instance\n * @property {MapMouseEvent} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener\n * map.on('dblclick', function(e) {\n * console.log('A dblclick event has occurred at ' + e.lngLat);\n * });\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener for a specific layer\n * map.on('dblclick', 'poi-label', function(e) {\n * console.log('A dblclick event has occurred on a visible portion of the poi-label layer at ' + e.lngLat);\n * });\n */\n | 'dblclick'\n\n /**\n * Fired when a pointing device (usually a mouse) enters a visible portion of a specified layer from\n * outside that layer or outside the map canvas.\n *\n * **Important:** This event can only be listened for when {@link Map#on} includes three arguments,\n * where the second argument specifies the desired layer.\n *\n * @event mouseenter\n * @memberof Map\n * @instance\n * @property {MapMouseEvent} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener\n * map.on('mouseenter', 'water', function() {\n * console.log('A mouseenter event occurred on a visible portion of the water layer.');\n * });\n * @see [Center the map on a clicked symbol](https://docs.mapbox.com/mapbox-gl-js/example/center-on-symbol/)\n * @see [Display a popup on click](https://docs.mapbox.com/mapbox-gl-js/example/popup-on-click/)\n */\n | 'mouseenter'\n\n /**\n * Fired when a pointing device (usually a mouse) leaves a visible portion of a specified layer, or leaves\n * the map canvas.\n *\n * **Important:** This event can only be listened for when {@link Map#on} includes three arguements,\n * where the second argument specifies the desired layer.\n *\n * @event mouseleave\n * @memberof Map\n * @instance\n * @property {MapMouseEvent} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // when the pointing device leaves\n * // a visible portion of the specified layer.\n * map.on('mouseleave', 'water', function() {\n * console.log('A mouseleave event occurred.');\n * });\n * @see [Highlight features under the mouse pointer](https://www.mapbox.com/mapbox-gl-js/example/hover-styles/)\n * @see [Display a popup on click](https://docs.mapbox.com/mapbox-gl-js/example/popup-on-click/)\n */\n | 'mouseleave'\n\n /**\n * Fired when a point device (usually a mouse) leaves the map's canvas.\n *\n * @event mouseout\n * @memberof Map\n * @instance\n * @property {MapMouseEvent} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // when the pointing device leave's\n * // the map's canvas.\n * map.on('mouseout', function() {\n * console.log('A mouseout event occurred.');\n * });\n */\n | 'mouseout'\n\n /**\n * Fired when the right button of the mouse is clicked or the context menu key is pressed within the map.\n *\n * @event contextmenu\n * @memberof Map\n * @instance\n * @property {MapMouseEvent} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // when the right mouse button is\n * // pressed within the map.\n * map.on('contextmenu', function() {\n * console.log('A contextmenu event occurred.');\n * });\n */\n | 'contextmenu'\n\n /**\n * Fired when a [`wheel`](https://developer.mozilla.org/en-US/docs/Web/Events/wheel) event occurs within the map.\n *\n * @event wheel\n * @memberof Map\n * @instance\n * @property {MapWheelEvent} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // when a wheel event occurs within the map.\n * map.on('wheel', function() {\n * console.log('A wheel event occurred.');\n * });\n */\n | 'wheel'\n\n /**\n * Fired when a [`touchstart`](https://developer.mozilla.org/en-US/docs/Web/Events/touchstart) event occurs within the map.\n *\n * @event touchstart\n * @memberof Map\n * @instance\n * @property {MapTouchEvent} data\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // when a touchstart event occurs within the map.\n * map.on('touchstart', function() {\n * console.log('A touchstart event occurred.');\n * });\n * @see [Create a draggable point](https://docs.mapbox.com/mapbox-gl-js/example/drag-a-point/)\n */\n | 'touchstart'\n\n /**\n * Fired when a [`touchend`](https://developer.mozilla.org/en-US/docs/Web/Events/touchend) event occurs within the map.\n *\n * @event touchend\n * @memberof Map\n * @instance\n * @property {MapTouchEvent} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // when a touchstart event occurs within the map.\n * map.on('touchstart', function() {\n * console.log('A touchstart event occurred.');\n * });\n * @see [Create a draggable point](https://docs.mapbox.com/mapbox-gl-js/example/drag-a-point/)\n */\n | 'touchend'\n\n /**\n * Fired when a [`touchmove`](https://developer.mozilla.org/en-US/docs/Web/Events/touchmove) event occurs within the map.\n *\n * @event touchmove\n * @memberof Map\n * @instance\n * @property {MapTouchEvent} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // when a touchmove event occurs within the map.\n * map.on('touchmove', function() {\n * console.log('A touchmove event occurred.');\n * });\n * @see [Create a draggable point](https://docs.mapbox.com/mapbox-gl-js/example/drag-a-point/)\n */\n | 'touchmove'\n\n /**\n * Fired when a [`touchcancel`](https://developer.mozilla.org/en-US/docs/Web/Events/touchcancel) event occurs within the map.\n *\n * @event touchcancel\n * @memberof Map\n * @instance\n * @property {MapTouchEvent} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // when a touchcancel event occurs within the map.\n * map.on('touchcancel', function() {\n * console.log('A touchcancel event occurred.');\n * });\n */\n | 'touchcancel'\n\n /**\n * Fired just before the map begins a transition from one\n * view to another, as the result of either user interaction or methods such as {@link Map#jumpTo}.\n *\n * @event movestart\n * @memberof Map\n * @instance\n * @property {{originalEvent: DragEvent}} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // just before the map begins a transition\n * // from one view to another.\n * map.on('movestart', function() {\n * console.log('A movestart` event occurred.');\n * });\n */\n | 'movestart'\n\n /**\n * Fired repeatedly during an animated transition from one view to\n * another, as the result of either user interaction or methods such as {@link Map#flyTo}.\n *\n * @event move\n * @memberof Map\n * @instance\n * @property {MapMouseEvent | MapTouchEvent} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // repeatedly during an animated transition.\n * map.on('move', function() {\n * console.log('A move event occurred.');\n * });\n * @see [Display HTML clusters with custom properties](https://docs.mapbox.com/mapbox-gl-js/example/cluster-html/)\n * @see [Filter features within map view](https://docs.mapbox.com/mapbox-gl-js/example/filter-features-within-map-view/)\n */\n | 'move'\n\n /**\n * Fired just after the map completes a transition from one\n * view to another, as the result of either user interaction or methods such as {@link Map#jumpTo}.\n *\n * @event moveend\n * @memberof Map\n * @instance\n * @property {{originalEvent: DragEvent}} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // just after the map completes a transition.\n * map.on('moveend', function() {\n * console.log('A moveend event occurred.');\n * });\n * @see [Play map locations as a slideshow](https://www.mapbox.com/mapbox-gl-js/example/playback-locations/)\n * @see [Filter features within map view](https://www.mapbox.com/mapbox-gl-js/example/filter-features-within-map-view/)\n * @see [Display HTML clusters with custom properties](https://docs.mapbox.com/mapbox-gl-js/example/cluster-html/)\n */\n | 'moveend'\n\n /**\n * Fired when a \"drag to pan\" interaction starts. See {@link DragPanHandler}.\n *\n * @event dragstart\n * @memberof Map\n * @instance\n * @property {{originalEvent: DragEvent}} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // when a \"drag to pan\" interaction starts.\n * map.on('dragstart', function() {\n * console.log('A dragstart event occurred.');\n * });\n */\n | 'dragstart'\n\n /**\n * Fired repeatedly during a \"drag to pan\" interaction. See {@link DragPanHandler}.\n *\n * @event drag\n * @memberof Map\n * @instance\n * @property {MapMouseEvent | MapTouchEvent} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // repeatedly during a \"drag to pan\" interaction.\n * map.on('drag', function() {\n * console.log('A drag event occurred.');\n * });\n */\n | 'drag'\n\n /**\n * Fired when a \"drag to pan\" interaction ends. See {@link DragPanHandler}.\n *\n * @event dragend\n * @memberof Map\n * @instance\n * @property {{originalEvent: DragEvent}} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // when a \"drag to pan\" interaction ends.\n * map.on('dragend', function() {\n * console.log('A dragend event occurred.');\n * });\n * @see [Create a draggable marker](https://docs.mapbox.com/mapbox-gl-js/example/drag-a-marker/)\n */\n | 'dragend'\n\n /**\n * Fired just before the map begins a transition from one zoom level to another,\n * as the result of either user interaction or methods such as {@link Map#flyTo}.\n *\n * @event zoomstart\n * @memberof Map\n * @instance\n * @property {MapMouseEvent | MapTouchEvent} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // just before a zoom transition starts.\n * map.on('zoomstart', function() {\n * console.log('A zoomstart event occurred.');\n * });\n */\n | 'zoomstart'\n\n /**\n * Fired repeatedly during an animated transition from one zoom level to another,\n * as the result of either user interaction or methods such as {@link Map#flyTo}.\n *\n * @event zoom\n * @memberof Map\n * @instance\n * @property {MapMouseEvent | MapTouchEvent} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // repeatedly during a zoom transition.\n * map.on('zoom', function() {\n * console.log('A zoom event occurred.');\n * });\n * @see [Update a choropleth layer by zoom level](https://www.mapbox.com/mapbox-gl-js/example/updating-choropleth/)\n */\n | 'zoom'\n\n /**\n * Fired just after the map completes a transition from one zoom level to another,\n * as the result of either user interaction or methods such as {@link Map#flyTo}.\n *\n * @event zoomend\n * @memberof Map\n * @instance\n * @property {MapMouseEvent | MapTouchEvent} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // just after a zoom transition finishes.\n * map.on('zoomend', function() {\n * console.log('A zoomend event occurred.');\n * });\n */\n | 'zoomend'\n\n /**\n * Fired when a \"drag to rotate\" interaction starts. See {@link DragRotateHandler}.\n *\n * @event rotatestart\n * @memberof Map\n * @instance\n * @property {MapMouseEvent | MapTouchEvent} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // just before a \"drag to rotate\" interaction starts.\n * map.on('rotatestart', function() {\n * console.log('A rotatestart event occurred.');\n * });\n */\n | 'rotatestart'\n\n /**\n * Fired repeatedly during a \"drag to rotate\" interaction. See {@link DragRotateHandler}.\n *\n * @event rotate\n * @memberof Map\n * @instance\n * @property {MapMouseEvent | MapTouchEvent} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // repeatedly during \"drag to rotate\" interaction.\n * map.on('rotate', function() {\n * console.log('A rotate event occurred.');\n * });\n */\n | 'rotate'\n\n /**\n * Fired when a \"drag to rotate\" interaction ends. See {@link DragRotateHandler}.\n *\n * @event rotateend\n * @memberof Map\n * @instance\n * @property {MapMouseEvent | MapTouchEvent} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // just after a \"drag to rotate\" interaction ends.\n * map.on('rotateend', function() {\n * console.log('A rotateend event occurred.');\n * });\n */\n | 'rotateend'\n\n /**\n * Fired whenever the map's pitch (tilt) begins a change as\n * the result of either user interaction or methods such as {@link Map#flyTo} .\n *\n * @event pitchstart\n * @memberof Map\n * @instance\n * @property {MapEventData} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // just before a pitch (tilt) transition starts.\n * map.on('pitchstart', function() {\n * console.log('A pitchstart event occurred.');\n * });\n */\n | 'pitchstart'\n\n /**\n * Fired repeatedly during the map's pitch (tilt) animation between\n * one state and another as the result of either user interaction\n * or methods such as {@link Map#flyTo}.\n *\n * @event pitch\n * @memberof Map\n * @instance\n * @property {MapEventData} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // repeatedly during a pitch (tilt) transition.\n * map.on('pitch', function() {\n * console.log('A pitch event occurred.');\n * });\n */\n | 'pitch'\n\n /**\n * Fired immediately after the map's pitch (tilt) finishes changing as\n * the result of either user interaction or methods such as {@link Map#flyTo}.\n *\n * @event pitchend\n * @memberof Map\n * @instance\n * @property {MapEventData} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // just after a pitch (tilt) transition ends.\n * map.on('pitchend', function() {\n * console.log('A pitchend event occurred.');\n * });\n */\n | 'pitchend'\n\n /**\n * Fired when a \"box zoom\" interaction starts. See {@link BoxZoomHandler}.\n *\n * @event boxzoomstart\n * @memberof Map\n * @instance\n * @property {MapBoxZoomEvent} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // just before a \"box zoom\" interaction starts.\n * map.on('boxzoomstart', function() {\n * console.log('A boxzoomstart event occurred.');\n * });\n */\n | 'boxzoomstart'\n\n /**\n * Fired when a \"box zoom\" interaction ends. See {@link BoxZoomHandler}.\n *\n * @event boxzoomend\n * @memberof Map\n * @instance\n * @type {Object}\n * @property {MapBoxZoomEvent} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // just after a \"box zoom\" interaction ends.\n * map.on('boxzoomend', function() {\n * console.log('A boxzoomend event occurred.');\n * });\n */\n | 'boxzoomend'\n\n /**\n * Fired when the user cancels a \"box zoom\" interaction, or when the bounding box does not meet the minimum size threshold.\n * See {@link BoxZoomHandler}.\n *\n * @event boxzoomcancel\n * @memberof Map\n * @instance\n * @property {MapBoxZoomEvent} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // the user cancels a \"box zoom\" interaction.\n * map.on('boxzoomcancel', function() {\n * console.log('A boxzoomcancel event occurred.');\n * });\n */\n | 'boxzoomcancel'\n\n /**\n * Fired immediately after the map has been resized.\n *\n * @event resize\n * @memberof Map\n * @instance\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // immediately after the map has been resized.\n * map.on('resize', function() {\n * console.log('A resize event occurred.');\n * });\n */\n | 'resize'\n\n /**\n * Fired when the WebGL context is lost.\n *\n * @event webglcontextlost\n * @memberof Map\n * @instance\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // when the WebGL context is lost.\n * map.on('webglcontextlost', function() {\n * console.log('A webglcontextlost event occurred.');\n * });\n */\n | 'webglcontextlost'\n\n /**\n * Fired when the WebGL context is restored.\n *\n * @event webglcontextrestored\n * @memberof Map\n * @instance\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // when the WebGL context is restored.\n * map.on('webglcontextrestored', function() {\n * console.log('A webglcontextrestored event occurred.');\n * });\n */\n | 'webglcontextrestored'\n\n /**\n * Fired immediately after all necessary resources have been downloaded\n * and the first visually complete rendering of the map has occurred.\n *\n * @event load\n * @memberof Map\n * @instance\n * @type {Object}\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // when the map has finished loading.\n * map.on('load', function() {\n * console.log('A load event occurred.');\n * });\n * @see [Draw GeoJSON points](https://www.mapbox.com/mapbox-gl-js/example/geojson-markers/)\n * @see [Add live realtime data](https://www.mapbox.com/mapbox-gl-js/example/live-geojson/)\n * @see [Animate a point](https://www.mapbox.com/mapbox-gl-js/example/animate-point-along-line/)\n */\n | 'load'\n\n /**\n * Fired whenever the map is drawn to the screen, as the result of\n *\n * - a change to the map's position, zoom, pitch, or bearing\n * - a change to the map's style\n * - a change to a GeoJSON source\n * - the loading of a vector tile, GeoJSON file, glyph, or sprite\n *\n * @event render\n * @memberof Map\n * @instance\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // whenever the map is drawn to the screen.\n * map.on('render', function() {\n * console.log('A render event occurred.');\n * });\n */\n | 'render'\n\n /**\n * Fired after the last frame rendered before the map enters an\n * \"idle\" state:\n *\n * - No camera transitions are in progress\n * - All currently requested tiles have loaded\n * - All fade/transition animations have completed\n *\n * @event idle\n * @memberof Map\n * @instance\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // just before the map enters an \"idle\" state.\n * map.on('idle', function() {\n * console.log('A idle event occurred.');\n * });\n */\n | 'idle'\n\n /**\n * Fired immediately after the map has been removed with {@link Map.event:remove}.\n *\n * @event remove\n * @memberof Map\n * @instance\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // just after the map is removed.\n * map.on('remove', function() {\n * console.log('A remove event occurred.');\n * });\n */\n | 'remove'\n\n /**\n * Fired when an error occurs. This is GL JS's primary error reporting\n * mechanism. We use an event instead of `throw` to better accommodate\n * asyncronous operations. If no listeners are bound to the `error` event, the\n * error will be printed to the console.\n *\n * @event error\n * @memberof Map\n * @instance\n * @property {{error: {message: string}}} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // when an error occurs.\n * map.on('error', function() {\n * console.log('A error event occurred.');\n * });\n */\n | 'error'\n\n /**\n * Fired when any map data loads or changes. See {@link MapDataEvent}\n * for more information.\n *\n * @event data\n * @memberof Map\n * @instance\n * @property {MapDataEvent} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // when map data loads or changes.\n * map.on('data', function() {\n * console.log('A data event occurred.');\n * });\n * @see [Display HTML clusters with custom properties](https://docs.mapbox.com/mapbox-gl-js/example/cluster-html/)\n */\n | 'data'\n\n /**\n * Fired when the map's style loads or changes. See\n * {@link MapDataEvent} for more information.\n *\n * @event styledata\n * @memberof Map\n * @instance\n * @property {MapDataEvent} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // when the map's style loads or changes.\n * map.on('styledata', function() {\n * console.log('A styledata event occurred.');\n * });\n */\n | 'styledata'\n\n /**\n * Fired when one of the map's sources loads or changes, including if a tile belonging\n * to a source loads or changes. See {@link MapDataEvent} for more information.\n *\n * @event sourcedata\n * @memberof Map\n * @instance\n * @property {MapDataEvent} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // when one of the map's sources loads or changes.\n * map.on('sourcedata', function() {\n * console.log('A sourcedata event occurred.');\n * });\n */\n | 'sourcedata'\n\n /**\n * Fired when any map data (style, source, tile, etc) begins loading or\n * changing asyncronously. All `dataloading` events are followed by a `data`\n * or `error` event. See {@link MapDataEvent} for more information.\n *\n * @event dataloading\n * @memberof Map\n * @instance\n * @property {MapDataEvent} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // when any map data begins loading\n * // or changing asynchronously.\n * map.on('dataloading', function() {\n * console.log('A dataloading event occurred.');\n * });\n */\n | 'dataloading'\n\n /**\n * Fired when the map's style begins loading or changing asyncronously.\n * All `styledataloading` events are followed by a `styledata`\n * or `error` event. See {@link MapDataEvent} for more information.\n *\n * @event styledataloading\n * @memberof Map\n * @instance\n * @property {MapDataEvent} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // map's style begins loading or\n * // changing asyncronously.\n * map.on('styledataloading', function() {\n * console.log('A styledataloading event occurred.');\n * });\n */\n | 'styledataloading'\n\n /**\n * Fired when one of the map's sources begins loading or changing asyncronously.\n * All `sourcedataloading` events are followed by a `sourcedata` or `error` event.\n * See {@link MapDataEvent} for more information.\n *\n * @event sourcedataloading\n * @memberof Map\n * @instance\n * @property {MapDataEvent} data\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // map's sources begin loading or\n * // changing asyncronously.\n * map.on('sourcedataloading', function() {\n * console.log('A sourcedataloading event occurred.');\n * });\n */\n | 'sourcedataloading'\n\n /**\n * Fired when an icon or pattern needed by the style is missing. The missing image can\n * be added with {@link Map#addImage} within this event listener callback to prevent the image from\n * being skipped. This event can be used to dynamically generate icons and patterns.\n *\n * @event styleimagemissing\n * @memberof Map\n * @instance\n * @property {string} id The id of the missing image.\n * @example\n * // Initialize the map\n * var map = new mapboxgl.Map({ // map options });\n * // Set an event listener that fires\n * // an icon or pattern is missing.\n * map.on('styleimagemissing', function() {\n * console.log('A styleimagemissing event occurred.');\n * });\n * @see [Generate and add a missing icon to the map](https://mapbox.com/mapbox-gl-js/example/add-image-missing-generated/)\n */\n | 'styleimagemissing'\n\n /**\n * @event style.load\n * @memberof Map\n * @instance\n * @private\n */\n | 'style.load';\n", "// @flow\n\nimport {MapMouseEvent, MapTouchEvent, MapWheelEvent} from '../events';\nimport type Map from '../map';\n\nexport class MapEventHandler {\n\n _mousedownPos: Point;\n _clickTolerance: number;\n _map: Map;\n\n constructor(map: Map, options: { clickTolerance: number }) {\n this._map = map;\n this._clickTolerance = options.clickTolerance;\n }\n\n reset() {\n delete this._mousedownPos;\n }\n\n wheel(e: WheelEvent) {\n // If mapEvent.preventDefault() is called by the user, prevent handlers such as:\n // - ScrollZoom\n return this._firePreventable(new MapWheelEvent(e.type, this._map, e));\n }\n\n mousedown(e: MouseEvent, point: Point) {\n this._mousedownPos = point;\n // If mapEvent.preventDefault() is called by the user, prevent handlers such as:\n // - MousePan\n // - MouseRotate\n // - MousePitch\n // - DblclickHandler\n return this._firePreventable(new MapMouseEvent(e.type, this._map, e));\n }\n\n mouseup(e: MouseEvent) {\n this._map.fire(new MapMouseEvent(e.type, this._map, e));\n }\n\n click(e: MouseEvent, point: Point) {\n if (this._mousedownPos && this._mousedownPos.dist(point) >= this._clickTolerance) return;\n this._map.fire(new MapMouseEvent(e.type, this._map, e));\n }\n\n dblclick(e: MouseEvent) {\n // If mapEvent.preventDefault() is called by the user, prevent handlers such as:\n // - DblClickZoom\n return this._firePreventable(new MapMouseEvent(e.type, this._map, e));\n }\n\n mouseover(e: MouseEvent) {\n this._map.fire(new MapMouseEvent(e.type, this._map, e));\n }\n\n mouseout(e: MouseEvent) {\n this._map.fire(new MapMouseEvent(e.type, this._map, e));\n }\n\n touchstart(e: TouchEvent) {\n // If mapEvent.preventDefault() is called by the user, prevent handlers such as:\n // - TouchPan\n // - TouchZoom\n // - TouchRotate\n // - TouchPitch\n // - TapZoom\n // - SwipeZoom\n return this._firePreventable(new MapTouchEvent(e.type, this._map, e));\n }\n\n touchmove(e: TouchEvent) {\n this._map.fire(new MapTouchEvent(e.type, this._map, e));\n }\n\n touchend(e: TouchEvent) {\n this._map.fire(new MapTouchEvent(e.type, this._map, e));\n }\n\n touchcancel(e: TouchEvent) {\n this._map.fire(new MapTouchEvent(e.type, this._map, e));\n }\n\n _firePreventable(mapEvent: MapMouseEvent | MapTouchEvent | MapWheelEvent) {\n this._map.fire(mapEvent);\n if (mapEvent.defaultPrevented) {\n // returning an object marks the handler as active and resets other handlers\n return {};\n }\n }\n\n isEnabled() {\n return true;\n }\n\n isActive() {\n return false;\n }\n enable() {}\n disable() {}\n}\n\nexport class BlockableMapEventHandler {\n _map: Map;\n _delayContextMenu: boolean;\n _contextMenuEvent: MouseEvent;\n\n constructor(map: Map) {\n this._map = map;\n }\n\n reset() {\n this._delayContextMenu = false;\n delete this._contextMenuEvent;\n }\n\n mousemove(e: MouseEvent) {\n // mousemove map events should not be fired when interaction handlers (pan, rotate, etc) are active\n this._map.fire(new MapMouseEvent(e.type, this._map, e));\n }\n\n mousedown() {\n this._delayContextMenu = true;\n }\n\n mouseup() {\n this._delayContextMenu = false;\n if (this._contextMenuEvent) {\n this._map.fire(new MapMouseEvent('contextmenu', this._map, this._contextMenuEvent));\n delete this._contextMenuEvent;\n }\n }\n contextmenu(e: MouseEvent) {\n if (this._delayContextMenu) {\n // Mac: contextmenu fired on mousedown; we save it until mouseup for consistency's sake\n this._contextMenuEvent = e;\n } else {\n // Windows: contextmenu fired on mouseup, so fire event now\n this._map.fire(new MapMouseEvent(e.type, this._map, e));\n }\n\n // prevent browser context menu when necessary\n if (this._map.listens('contextmenu')) {\n e.preventDefault();\n }\n }\n\n isEnabled() {\n return true;\n }\n\n isActive() {\n return false;\n }\n enable() {}\n disable() {}\n}\n", "// @flow\n\nimport DOM from '../../util/dom';\n\nimport {Event} from '../../util/evented';\n\nimport type Map from '../map';\n\n/**\n * The `BoxZoomHandler` allows the user to zoom the map to fit within a bounding box.\n * The bounding box is defined by clicking and holding `shift` while dragging the cursor.\n */\nclass BoxZoomHandler {\n _map: Map;\n _el: HTMLElement;\n _container: HTMLElement;\n _enabled: boolean;\n _active: boolean;\n _startPos: Point;\n _lastPos: Point;\n _box: HTMLElement;\n _clickTolerance: number;\n\n /**\n * @private\n */\n constructor(map: Map, options: {\n clickTolerance: number\n }) {\n this._map = map;\n this._el = map.getCanvasContainer();\n this._container = map.getContainer();\n this._clickTolerance = options.clickTolerance || 1;\n }\n\n /**\n * Returns a Boolean indicating whether the \"box zoom\" interaction is enabled.\n *\n * @returns {boolean} `true` if the \"box zoom\" interaction is enabled.\n */\n isEnabled() {\n return !!this._enabled;\n }\n\n /**\n * Returns a Boolean indicating whether the \"box zoom\" interaction is active, i.e. currently being used.\n *\n * @returns {boolean} `true` if the \"box zoom\" interaction is active.\n */\n isActive() {\n return !!this._active;\n }\n\n /**\n * Enables the \"box zoom\" interaction.\n *\n * @example\n * map.boxZoom.enable();\n */\n enable() {\n if (this.isEnabled()) return;\n this._enabled = true;\n }\n\n /**\n * Disables the \"box zoom\" interaction.\n *\n * @example\n * map.boxZoom.disable();\n */\n disable() {\n if (!this.isEnabled()) return;\n this._enabled = false;\n }\n\n mousedown(e: MouseEvent, point: Point) {\n if (!this.isEnabled()) return;\n if (!(e.shiftKey && e.button === 0)) return;\n\n DOM.disableDrag();\n this._startPos = this._lastPos = point;\n this._active = true;\n }\n\n mousemoveWindow(e: MouseEvent, point: Point) {\n if (!this._active) return;\n\n const pos = point;\n\n if (this._lastPos.equals(pos) || (!this._box && pos.dist(this._startPos) < this._clickTolerance)) {\n return;\n }\n\n const p0 = this._startPos;\n this._lastPos = pos;\n\n if (!this._box) {\n this._box = DOM.create('div', 'mapboxgl-boxzoom', this._container);\n this._container.classList.add('mapboxgl-crosshair');\n this._fireEvent('boxzoomstart', e);\n }\n\n const minX = Math.min(p0.x, pos.x),\n maxX = Math.max(p0.x, pos.x),\n minY = Math.min(p0.y, pos.y),\n maxY = Math.max(p0.y, pos.y);\n\n DOM.setTransform(this._box, `translate(${minX}px,${minY}px)`);\n\n this._box.style.width = `${maxX - minX}px`;\n this._box.style.height = `${maxY - minY}px`;\n }\n\n mouseupWindow(e: MouseEvent, point: Point) {\n if (!this._active) return;\n\n if (e.button !== 0) return;\n\n const p0 = this._startPos,\n p1 = point;\n\n this.reset();\n\n DOM.suppressClick();\n\n if (p0.x === p1.x && p0.y === p1.y) {\n this._fireEvent('boxzoomcancel', e);\n } else {\n this._map.fire(new Event('boxzoomend', {originalEvent: e}));\n return {\n cameraAnimation: map => map.fitScreenCoordinates(p0, p1, this._map.getBearing(), {linear: true})\n };\n }\n }\n\n keydown(e: KeyboardEvent) {\n if (!this._active) return;\n\n if (e.keyCode === 27) {\n this.reset();\n this._fireEvent('boxzoomcancel', e);\n }\n }\n\n blur() {\n this.reset();\n }\n\n reset() {\n this._active = false;\n\n this._container.classList.remove('mapboxgl-crosshair');\n\n if (this._box) {\n DOM.remove(this._box);\n this._box = (null: any);\n }\n\n DOM.enableDrag();\n\n delete this._startPos;\n delete this._lastPos;\n }\n\n _fireEvent(type: string, e: *) {\n return this._map.fire(new Event(type, {originalEvent: e}));\n }\n}\n\nexport default BoxZoomHandler;\n", "// @flow\n\nimport assert from 'assert';\n\nexport function indexTouches(touches: Array, points: Array) {\n assert(touches.length === points.length);\n const obj = {};\n for (let i = 0; i < touches.length; i++) {\n obj[touches[i].identifier] = points[i];\n }\n return obj;\n}\n", "// @flow\n\nimport Point from '@mapbox/point-geometry';\nimport {indexTouches} from './handler_util';\n\nfunction getCentroid(points: Array) {\n const sum = new Point(0, 0);\n for (const point of points) {\n sum._add(point);\n }\n return sum.div(points.length);\n}\n\nexport const MAX_TAP_INTERVAL = 500;\nconst MAX_TOUCH_TIME = 500;\nconst MAX_DIST = 30;\n\nexport class SingleTapRecognizer {\n\n numTouches: number;\n centroid: Point;\n startTime: number;\n aborted: boolean;\n touches: { [number | string]: Point };\n\n constructor(options: { numTouches: number }) {\n this.reset();\n this.numTouches = options.numTouches;\n }\n\n reset() {\n delete this.centroid;\n delete this.startTime;\n delete this.touches;\n this.aborted = false;\n }\n\n touchstart(e: TouchEvent, points: Array, mapTouches: Array) {\n\n if (this.centroid || mapTouches.length > this.numTouches) {\n this.aborted = true;\n }\n if (this.aborted) {\n return;\n }\n\n if (this.startTime === undefined) {\n this.startTime = e.timeStamp;\n }\n\n if (mapTouches.length === this.numTouches) {\n this.centroid = getCentroid(points);\n this.touches = indexTouches(mapTouches, points);\n }\n }\n\n touchmove(e: TouchEvent, points: Array, mapTouches: Array) {\n if (this.aborted || !this.centroid) return;\n\n const newTouches = indexTouches(mapTouches, points);\n for (const id in this.touches) {\n const prevPos = this.touches[id];\n const pos = newTouches[id];\n if (!pos || pos.dist(prevPos) > MAX_DIST) {\n this.aborted = true;\n }\n }\n }\n\n touchend(e: TouchEvent, points: Array, mapTouches: Array) {\n if (!this.centroid || e.timeStamp - this.startTime > MAX_TOUCH_TIME) {\n this.aborted = true;\n }\n\n if (mapTouches.length === 0) {\n const centroid = !this.aborted && this.centroid;\n this.reset();\n if (centroid) return centroid;\n }\n }\n\n}\n\nexport class TapRecognizer {\n\n singleTap: SingleTapRecognizer;\n numTaps: number;\n lastTime: number;\n lastTap: Point;\n count: number;\n\n constructor(options: { numTaps: number, numTouches: number }) {\n this.singleTap = new SingleTapRecognizer(options);\n this.numTaps = options.numTaps;\n this.reset();\n }\n\n reset() {\n this.lastTime = Infinity;\n delete this.lastTap;\n this.count = 0;\n this.singleTap.reset();\n }\n\n touchstart(e: TouchEvent, points: Array, mapTouches: Array) {\n this.singleTap.touchstart(e, points, mapTouches);\n }\n\n touchmove(e: TouchEvent, points: Array, mapTouches: Array) {\n this.singleTap.touchmove(e, points, mapTouches);\n }\n\n touchend(e: TouchEvent, points: Array, mapTouches: Array) {\n const tap = this.singleTap.touchend(e, points, mapTouches);\n if (tap) {\n const soonEnough = e.timeStamp - this.lastTime < MAX_TAP_INTERVAL;\n const closeEnough = !this.lastTap || this.lastTap.dist(tap) < MAX_DIST;\n\n if (!soonEnough || !closeEnough) {\n this.reset();\n }\n\n this.count++;\n this.lastTime = e.timeStamp;\n this.lastTap = tap;\n\n if (this.count === this.numTaps) {\n this.reset();\n return tap;\n }\n }\n }\n}\n", "// @flow\n\nimport {TapRecognizer} from './tap_recognizer';\nimport type Point from '@mapbox/point-geometry';\nimport type Map from '../map';\n\nexport default class TapZoomHandler {\n\n _enabled: boolean;\n _active: boolean;\n _zoomIn: TapRecognizer;\n _zoomOut: TapRecognizer;\n\n constructor() {\n this._zoomIn = new TapRecognizer({\n numTouches: 1,\n numTaps: 2\n });\n\n this._zoomOut = new TapRecognizer({\n numTouches: 2,\n numTaps: 1\n });\n\n this.reset();\n }\n\n reset() {\n this._active = false;\n this._zoomIn.reset();\n this._zoomOut.reset();\n }\n\n touchstart(e: TouchEvent, points: Array, mapTouches: Array) {\n this._zoomIn.touchstart(e, points, mapTouches);\n this._zoomOut.touchstart(e, points, mapTouches);\n }\n\n touchmove(e: TouchEvent, points: Array, mapTouches: Array) {\n this._zoomIn.touchmove(e, points, mapTouches);\n this._zoomOut.touchmove(e, points, mapTouches);\n }\n\n touchend(e: TouchEvent, points: Array, mapTouches: Array) {\n const zoomInPoint = this._zoomIn.touchend(e, points, mapTouches);\n const zoomOutPoint = this._zoomOut.touchend(e, points, mapTouches);\n\n if (zoomInPoint) {\n this._active = true;\n e.preventDefault();\n setTimeout(() => this.reset(), 0);\n return {\n cameraAnimation: (map: Map) => map.easeTo({\n duration: 300,\n zoom: map.getZoom() + 1,\n around: map.unproject(zoomInPoint)\n }, {originalEvent: e})\n };\n } else if (zoomOutPoint) {\n this._active = true;\n e.preventDefault();\n setTimeout(() => this.reset(), 0);\n return {\n cameraAnimation: (map: Map) => map.easeTo({\n duration: 300,\n zoom: map.getZoom() - 1,\n around: map.unproject(zoomOutPoint)\n }, {originalEvent: e})\n };\n }\n }\n\n touchcancel() {\n this.reset();\n }\n\n enable() {\n this._enabled = true;\n }\n\n disable() {\n this._enabled = false;\n this.reset();\n }\n\n isEnabled() {\n return this._enabled;\n }\n\n isActive() {\n return this._active;\n }\n}\n", "// @flow\n\nimport DOM from '../../util/dom';\nimport type Point from '@mapbox/point-geometry';\n\nconst LEFT_BUTTON = 0;\nconst RIGHT_BUTTON = 2;\n\n// the values for each button in MouseEvent.buttons\nconst BUTTONS_FLAGS = {\n [LEFT_BUTTON]: 1,\n [RIGHT_BUTTON]: 2\n};\n\nfunction buttonStillPressed(e: MouseEvent, button: number) {\n const flag = BUTTONS_FLAGS[button];\n return e.buttons === undefined || (e.buttons & flag) !== flag;\n}\n\nclass MouseHandler {\n\n _enabled: boolean;\n _active: boolean;\n _lastPoint: Point;\n _eventButton: number;\n _moved: boolean;\n _clickTolerance: number;\n\n constructor(options: { clickTolerance: number }) {\n this.reset();\n this._clickTolerance = options.clickTolerance || 1;\n }\n\n blur() {\n this.reset();\n }\n\n reset() {\n this._active = false;\n this._moved = false;\n delete this._lastPoint;\n delete this._eventButton;\n }\n\n _correctButton(e: MouseEvent, button: number) { //eslint-disable-line\n return false; // implemented by child\n }\n\n _move(lastPoint: Point, point: Point) { //eslint-disable-line\n return {}; // implemented by child\n }\n\n mousedown(e: MouseEvent, point: Point) {\n if (this._lastPoint) return;\n\n const eventButton = DOM.mouseButton(e);\n if (!this._correctButton(e, eventButton)) return;\n\n this._lastPoint = point;\n this._eventButton = eventButton;\n }\n\n mousemoveWindow(e: MouseEvent, point: Point) {\n const lastPoint = this._lastPoint;\n if (!lastPoint) return;\n e.preventDefault();\n\n if (buttonStillPressed(e, this._eventButton)) {\n // Some browsers don't fire a `mouseup` when the mouseup occurs outside\n // the window or iframe:\n // https://github.com/mapbox/mapbox-gl-js/issues/4622\n //\n // If the button is no longer pressed during this `mousemove` it may have\n // been released outside of the window or iframe.\n this.reset();\n return;\n }\n\n if (!this._moved && point.dist(lastPoint) < this._clickTolerance) return;\n this._moved = true;\n this._lastPoint = point;\n\n // implemented by child class\n return this._move(lastPoint, point);\n }\n\n mouseupWindow(e: MouseEvent) {\n if (!this._lastPoint) return;\n const eventButton = DOM.mouseButton(e);\n if (eventButton !== this._eventButton) return;\n if (this._moved) DOM.suppressClick();\n this.reset();\n }\n\n enable() {\n this._enabled = true;\n }\n\n disable() {\n this._enabled = false;\n this.reset();\n }\n\n isEnabled() {\n return this._enabled;\n }\n\n isActive() {\n return this._active;\n }\n}\n\nexport class MousePanHandler extends MouseHandler {\n\n mousedown(e: MouseEvent, point: Point) {\n super.mousedown(e, point);\n if (this._lastPoint) this._active = true;\n }\n _correctButton(e: MouseEvent, button: number) {\n return button === LEFT_BUTTON && !e.ctrlKey;\n }\n\n _move(lastPoint: Point, point: Point) {\n return {\n around: point,\n panDelta: point.sub(lastPoint)\n };\n }\n}\n\nexport class MouseRotateHandler extends MouseHandler {\n _correctButton(e: MouseEvent, button: number) {\n return (button === LEFT_BUTTON && e.ctrlKey) || (button === RIGHT_BUTTON);\n }\n\n _move(lastPoint: Point, point: Point) {\n const degreesPerPixelMoved = 0.8;\n const bearingDelta = (point.x - lastPoint.x) * degreesPerPixelMoved;\n if (bearingDelta) {\n this._active = true;\n return {bearingDelta};\n }\n }\n\n contextmenu(e: MouseEvent) {\n // prevent browser context menu when necessary; we don't allow it with rotation\n // because we can't discern rotation gesture start from contextmenu on Mac\n e.preventDefault();\n }\n}\n\nexport class MousePitchHandler extends MouseHandler {\n _correctButton(e: MouseEvent, button: number) {\n return (button === LEFT_BUTTON && e.ctrlKey) || (button === RIGHT_BUTTON);\n }\n\n _move(lastPoint: Point, point: Point) {\n const degreesPerPixelMoved = -0.5;\n const pitchDelta = (point.y - lastPoint.y) * degreesPerPixelMoved;\n if (pitchDelta) {\n this._active = true;\n return {pitchDelta};\n }\n }\n\n contextmenu(e: MouseEvent) {\n // prevent browser context menu when necessary; we don't allow it with rotation\n // because we can't discern rotation gesture start from contextmenu on Mac\n e.preventDefault();\n }\n}\n", "// @flow\n\nimport Point from '@mapbox/point-geometry';\nimport {indexTouches} from './handler_util';\n\nexport default class TouchPanHandler {\n\n _enabled: boolean;\n _active: boolean;\n _touches: { [string | number]: Point };\n _minTouches: number;\n _clickTolerance: number;\n _sum: Point;\n\n constructor(options: { clickTolerance: number }) {\n this._minTouches = 1;\n this._clickTolerance = options.clickTolerance || 1;\n this.reset();\n }\n\n reset() {\n this._active = false;\n this._touches = {};\n this._sum = new Point(0, 0);\n }\n\n touchstart(e: TouchEvent, points: Array, mapTouches: Array) {\n return this._calculateTransform(e, points, mapTouches);\n }\n\n touchmove(e: TouchEvent, points: Array, mapTouches: Array) {\n if (!this._active || mapTouches.length < this._minTouches) return;\n e.preventDefault();\n return this._calculateTransform(e, points, mapTouches);\n }\n\n touchend(e: TouchEvent, points: Array, mapTouches: Array) {\n this._calculateTransform(e, points, mapTouches);\n\n if (this._active && mapTouches.length < this._minTouches) {\n this.reset();\n }\n }\n\n touchcancel() {\n this.reset();\n }\n\n _calculateTransform(e: TouchEvent, points: Array, mapTouches: Array) {\n if (mapTouches.length > 0) this._active = true;\n\n const touches = indexTouches(mapTouches, points);\n\n const touchPointSum = new Point(0, 0);\n const touchDeltaSum = new Point(0, 0);\n let touchDeltaCount = 0;\n\n for (const identifier in touches) {\n const point = touches[identifier];\n const prevPoint = this._touches[identifier];\n if (prevPoint) {\n touchPointSum._add(point);\n touchDeltaSum._add(point.sub(prevPoint));\n touchDeltaCount++;\n touches[identifier] = point;\n }\n }\n\n this._touches = touches;\n\n if (touchDeltaCount < this._minTouches || !touchDeltaSum.mag()) return;\n\n const panDelta = touchDeltaSum.div(touchDeltaCount);\n this._sum._add(panDelta);\n if (this._sum.mag() < this._clickTolerance) return;\n\n const around = touchPointSum.div(touchDeltaCount);\n\n return {\n around,\n panDelta\n };\n }\n\n enable() {\n this._enabled = true;\n }\n\n disable() {\n this._enabled = false;\n this.reset();\n }\n\n isEnabled() {\n return this._enabled;\n }\n\n isActive() {\n return this._active;\n }\n}\n", "// @flow\n\nimport Point from '@mapbox/point-geometry';\nimport DOM from '../../util/dom';\n\nclass TwoTouchHandler {\n\n _enabled: boolean;\n _active: boolean;\n _firstTwoTouches: [number, number];\n _vector: Point;\n _startVector: Point;\n _aroundCenter: boolean;\n\n constructor() {\n this.reset();\n }\n\n reset() {\n this._active = false;\n delete this._firstTwoTouches;\n }\n\n _start(points: [Point, Point]) {} //eslint-disable-line\n _move(points: [Point, Point], pinchAround: Point, e: TouchEvent) { return {}; } //eslint-disable-line\n\n touchstart(e: TouchEvent, points: Array, mapTouches: Array) {\n //console.log(e.target, e.targetTouches.length ? e.targetTouches[0].target : null);\n //log('touchstart', points, e.target.innerHTML, e.targetTouches.length ? e.targetTouches[0].target.innerHTML: undefined);\n if (this._firstTwoTouches || mapTouches.length < 2) return;\n\n this._firstTwoTouches = [\n mapTouches[0].identifier,\n mapTouches[1].identifier\n ];\n\n // implemented by child classes\n this._start([points[0], points[1]]);\n }\n\n touchmove(e: TouchEvent, points: Array, mapTouches: Array) {\n if (!this._firstTwoTouches) return;\n\n e.preventDefault();\n\n const [idA, idB] = this._firstTwoTouches;\n const a = getTouchById(mapTouches, points, idA);\n const b = getTouchById(mapTouches, points, idB);\n if (!a || !b) return;\n const pinchAround = this._aroundCenter ? null : a.add(b).div(2);\n\n // implemented by child classes\n return this._move([a, b], pinchAround, e);\n\n }\n\n touchend(e: TouchEvent, points: Array, mapTouches: Array) {\n if (!this._firstTwoTouches) return;\n\n const [idA, idB] = this._firstTwoTouches;\n const a = getTouchById(mapTouches, points, idA);\n const b = getTouchById(mapTouches, points, idB);\n if (a && b) return;\n\n if (this._active) DOM.suppressClick();\n\n this.reset();\n }\n\n touchcancel() {\n this.reset();\n }\n\n enable(options: ?{around?: 'center'}) {\n this._enabled = true;\n this._aroundCenter = !!options && options.around === 'center';\n }\n\n disable() {\n this._enabled = false;\n this.reset();\n }\n\n isEnabled() {\n return this._enabled;\n }\n\n isActive() {\n return this._active;\n }\n}\n\nfunction getTouchById(mapTouches: Array, points: Array, identifier: number) {\n for (let i = 0; i < mapTouches.length; i++) {\n if (mapTouches[i].identifier === identifier) return points[i];\n }\n}\n\n/* ZOOM */\n\nconst ZOOM_THRESHOLD = 0.1;\n\nfunction getZoomDelta(distance, lastDistance) {\n return Math.log(distance / lastDistance) / Math.LN2;\n}\n\nexport class TouchZoomHandler extends TwoTouchHandler {\n\n _distance: number;\n _startDistance: number;\n\n reset() {\n super.reset();\n delete this._distance;\n delete this._startDistance;\n }\n\n _start(points: [Point, Point]) {\n this._startDistance = this._distance = points[0].dist(points[1]);\n }\n\n _move(points: [Point, Point], pinchAround: Point) {\n const lastDistance = this._distance;\n this._distance = points[0].dist(points[1]);\n if (!this._active && Math.abs(getZoomDelta(this._distance, this._startDistance)) < ZOOM_THRESHOLD) return;\n this._active = true;\n return {\n zoomDelta: getZoomDelta(this._distance, lastDistance),\n pinchAround\n };\n }\n}\n\n/* ROTATE */\n\nconst ROTATION_THRESHOLD = 25; // pixels along circumference of touch circle\n\nfunction getBearingDelta(a, b) {\n return a.angleWith(b) * 180 / Math.PI;\n}\n\nexport class TouchRotateHandler extends TwoTouchHandler {\n _minDiameter: number;\n\n reset() {\n super.reset();\n delete this._minDiameter;\n delete this._startVector;\n delete this._vector;\n }\n\n _start(points: [Point, Point]) {\n this._startVector = this._vector = points[0].sub(points[1]);\n this._minDiameter = points[0].dist(points[1]);\n }\n\n _move(points: [Point, Point], pinchAround: Point) {\n const lastVector = this._vector;\n this._vector = points[0].sub(points[1]);\n\n if (!this._active && this._isBelowThreshold(this._vector)) return;\n this._active = true;\n\n return {\n bearingDelta: getBearingDelta(this._vector, lastVector),\n pinchAround\n };\n }\n\n _isBelowThreshold(vector: Point) {\n /*\n * The threshold before a rotation actually happens is configured in\n * pixels alongth circumference of the circle formed by the two fingers.\n * This makes the threshold in degrees larger when the fingers are close\n * together and smaller when the fingers are far apart.\n *\n * Use the smallest diameter from the whole gesture to reduce sensitivity\n * when pinching in and out.\n */\n\n this._minDiameter = Math.min(this._minDiameter, vector.mag());\n const circumference = Math.PI * this._minDiameter;\n const threshold = ROTATION_THRESHOLD / circumference * 360;\n\n const bearingDeltaSinceStart = getBearingDelta(vector, this._startVector);\n return Math.abs(bearingDeltaSinceStart) < threshold;\n }\n}\n\n/* PITCH */\n\nfunction isVertical(vector) {\n return Math.abs(vector.y) > Math.abs(vector.x);\n}\n\nconst ALLOWED_SINGLE_TOUCH_TIME = 100;\n\n/**\n * The `TouchPitchHandler` allows the user to pitch the map by dragging up and down with two fingers.\n */\nexport class TouchPitchHandler extends TwoTouchHandler {\n\n _valid: boolean | void;\n _firstMove: number;\n _lastPoints: [Point, Point];\n\n reset() {\n super.reset();\n this._valid = undefined;\n delete this._firstMove;\n delete this._lastPoints;\n }\n\n _start(points: [Point, Point]) {\n this._lastPoints = points;\n if (isVertical(points[0].sub(points[1]))) {\n // fingers are more horizontal than vertical\n this._valid = false;\n\n }\n }\n\n _move(points: [Point, Point], center: Point, e: TouchEvent) {\n const vectorA = points[0].sub(this._lastPoints[0]);\n const vectorB = points[1].sub(this._lastPoints[1]);\n\n this._valid = this.gestureBeginsVertically(vectorA, vectorB, e.timeStamp);\n if (!this._valid) return;\n\n this._lastPoints = points;\n this._active = true;\n const yDeltaAverage = (vectorA.y + vectorB.y) / 2;\n const degreesPerPixelMoved = -0.5;\n return {\n pitchDelta: yDeltaAverage * degreesPerPixelMoved\n };\n }\n\n gestureBeginsVertically(vectorA: Point, vectorB: Point, timeStamp: number) {\n if (this._valid !== undefined) return this._valid;\n\n const threshold = 2;\n const movedA = vectorA.mag() >= threshold;\n const movedB = vectorB.mag() >= threshold;\n\n // neither finger has moved a meaningful amount, wait\n if (!movedA && !movedB) return;\n\n // One finger has moved and the other has not.\n // If enough time has passed, decide it is not a pitch.\n if (!movedA || !movedB) {\n if (this._firstMove === undefined) {\n this._firstMove = timeStamp;\n }\n\n if (timeStamp - this._firstMove < ALLOWED_SINGLE_TOUCH_TIME) {\n // still waiting for a movement from the second finger\n return undefined;\n } else {\n return false;\n }\n }\n\n const isSameDirection = vectorA.y > 0 === vectorB.y > 0;\n return isVertical(vectorA) && isVertical(vectorB) && isSameDirection;\n }\n\n /**\n * Returns a Boolean indicating whether the \"drag to pitch\" interaction is enabled.\n *\n * @memberof TouchPitchHandler\n * @name isEnabled\n * @instance\n * @returns {boolean} `true` if the \"drag to pitch\" interaction is enabled.\n */\n\n /**\n * Returns a Boolean indicating whether the \"drag to pitch\" interaction is active, i.e. currently being used.\n *\n * @memberof TouchPitchHandler\n * @name isActive\n * @instance\n * @returns {boolean} `true` if the \"drag to pitch\" interaction is active.\n */\n\n /**\n * Enables the \"drag to pitch\" interaction.\n *\n * @memberof TouchPitchHandler\n * @name enable\n * @instance\n * @example\n * map.touchPitch.enable();\n */\n\n /**\n * Disables the \"drag to pitch\" interaction.\n *\n * @memberof TouchPitchHandler\n * @name disable\n * @instance\n * @example\n * map.touchPitch.disable();\n */\n}\n", "// @flow\n\nimport type Map from '../map';\n\nconst defaultOptions = {\n panStep: 100,\n bearingStep: 15,\n pitchStep: 10\n};\n\n/**\n * The `KeyboardHandler` allows the user to zoom, rotate, and pan the map using\n * the following keyboard shortcuts:\n *\n * - `=` / `+`: Increase the zoom level by 1.\n * - `Shift-=` / `Shift-+`: Increase the zoom level by 2.\n * - `-`: Decrease the zoom level by 1.\n * - `Shift--`: Decrease the zoom level by 2.\n * - Arrow keys: Pan by 100 pixels.\n * - `Shift+⇢`: Increase the rotation by 15 degrees.\n * - `Shift+⇠`: Decrease the rotation by 15 degrees.\n * - `Shift+⇡`: Increase the pitch by 10 degrees.\n * - `Shift+⇣`: Decrease the pitch by 10 degrees.\n */\nclass KeyboardHandler {\n _enabled: boolean;\n _active: boolean;\n _panStep: number;\n _bearingStep: number;\n _pitchStep: number;\n _rotationDisabled: boolean;\n\n /**\n * @private\n */\n constructor() {\n const stepOptions = defaultOptions;\n this._panStep = stepOptions.panStep;\n this._bearingStep = stepOptions.bearingStep;\n this._pitchStep = stepOptions.pitchStep;\n this._rotationDisabled = false;\n }\n\n blur() {\n this.reset();\n }\n\n reset() {\n this._active = false;\n }\n\n keydown(e: KeyboardEvent) {\n if (e.altKey || e.ctrlKey || e.metaKey) return;\n\n let zoomDir = 0;\n let bearingDir = 0;\n let pitchDir = 0;\n let xDir = 0;\n let yDir = 0;\n\n switch (e.keyCode) {\n case 61:\n case 107:\n case 171:\n case 187:\n zoomDir = 1;\n break;\n\n case 189:\n case 109:\n case 173:\n zoomDir = -1;\n break;\n\n case 37:\n if (e.shiftKey) {\n bearingDir = -1;\n } else {\n e.preventDefault();\n xDir = -1;\n }\n break;\n\n case 39:\n if (e.shiftKey) {\n bearingDir = 1;\n } else {\n e.preventDefault();\n xDir = 1;\n }\n break;\n\n case 38:\n if (e.shiftKey) {\n pitchDir = 1;\n } else {\n e.preventDefault();\n yDir = -1;\n }\n break;\n\n case 40:\n if (e.shiftKey) {\n pitchDir = -1;\n } else {\n e.preventDefault();\n yDir = 1;\n }\n break;\n\n default:\n return;\n }\n\n if (this._rotationDisabled) {\n bearingDir = 0;\n pitchDir = 0;\n }\n\n return {\n cameraAnimation: (map: Map) => {\n const zoom = map.getZoom();\n map.easeTo({\n duration: 300,\n easeId: 'keyboardHandler',\n easing: easeOut,\n\n zoom: zoomDir ? Math.round(zoom) + zoomDir * (e.shiftKey ? 2 : 1) : zoom,\n bearing: map.getBearing() + bearingDir * this._bearingStep,\n pitch: map.getPitch() + pitchDir * this._pitchStep,\n offset: [-xDir * this._panStep, -yDir * this._panStep],\n center: map.getCenter()\n }, {originalEvent: e});\n }\n };\n }\n\n /**\n * Enables the \"keyboard rotate and zoom\" interaction.\n *\n * @example\n * map.keyboard.enable();\n */\n enable() {\n this._enabled = true;\n }\n\n /**\n * Disables the \"keyboard rotate and zoom\" interaction.\n *\n * @example\n * map.keyboard.disable();\n */\n disable() {\n this._enabled = false;\n this.reset();\n }\n\n /**\n * Returns a Boolean indicating whether the \"keyboard rotate and zoom\"\n * interaction is enabled.\n *\n * @returns {boolean} `true` if the \"keyboard rotate and zoom\"\n * interaction is enabled.\n */\n isEnabled() {\n return this._enabled;\n }\n\n /**\n * Returns true if the handler is enabled and has detected the start of a\n * zoom/rotate gesture.\n *\n * @returns {boolean} `true` if the handler is enabled and has detected the\n * start of a zoom/rotate gesture.\n */\n isActive() {\n return this._active;\n }\n\n /**\n * Disables the \"keyboard pan/rotate\" interaction, leaving the\n * \"keyboard zoom\" interaction enabled.\n *\n * @example\n * map.keyboard.disableRotation();\n */\n disableRotation() {\n this._rotationDisabled = true;\n }\n\n /**\n * Enables the \"keyboard pan/rotate\" interaction.\n *\n * @example\n * map.keyboard.enable();\n * map.keyboard.enableRotation();\n */\n enableRotation() {\n this._rotationDisabled = false;\n }\n}\n\nfunction easeOut(t: number) {\n return t * (2 - t);\n}\n\nexport default KeyboardHandler;\n", "// @flow\n\nimport assert from 'assert';\nimport DOM from '../../util/dom';\n\nimport {ease as _ease, bindAll, bezier} from '../../util/util';\nimport browser from '../../util/browser';\nimport window from '../../util/window';\nimport {number as interpolate} from '../../style-spec/util/interpolate';\nimport LngLat from '../../geo/lng_lat';\n\nimport type Map from '../map';\nimport type HandlerManager from '../handler_manager';\nimport type Point from '@mapbox/point-geometry';\n\n// deltaY value for mouse scroll wheel identification\nconst wheelZoomDelta = 4.000244140625;\n\n// These magic numbers control the rate of zoom. Trackpad events fire at a greater\n// frequency than mouse scroll wheel, so reduce the zoom rate per wheel tick\nconst defaultZoomRate = 1 / 100;\nconst wheelZoomRate = 1 / 450;\n\n// upper bound on how much we scale the map in any single render frame; this\n// is used to limit zoom rate in the case of very fast scrolling\nconst maxScalePerFrame = 2;\n\n/**\n * The `ScrollZoomHandler` allows the user to zoom the map by scrolling.\n */\nclass ScrollZoomHandler {\n _map: Map;\n _el: HTMLElement;\n _enabled: boolean;\n _active: boolean;\n _zooming: boolean;\n _aroundCenter: boolean;\n _around: Point;\n _aroundPoint: Point;\n _type: 'wheel' | 'trackpad' | null;\n _lastValue: number;\n _timeout: ?TimeoutID; // used for delayed-handling of a single wheel movement\n _finishTimeout: ?TimeoutID; // used to delay final '{move,zoom}end' events\n\n _lastWheelEvent: any;\n _lastWheelEventTime: number;\n\n _startZoom: ?number;\n _targetZoom: ?number;\n _delta: number;\n _easing: ?((number) => number);\n _prevEase: ?{start: number, duration: number, easing: (_: number) => number};\n\n _frameId: ?boolean;\n _handler: HandlerManager;\n\n _defaultZoomRate: number;\n _wheelZoomRate: number;\n\n /**\n * @private\n */\n constructor(map: Map, handler: HandlerManager) {\n this._map = map;\n this._el = map.getCanvasContainer();\n this._handler = handler;\n\n this._delta = 0;\n\n this._defaultZoomRate = defaultZoomRate;\n this._wheelZoomRate = wheelZoomRate;\n\n bindAll(['_onTimeout'], this);\n }\n\n /**\n * Set the zoom rate of a trackpad\n * @param {number} [zoomRate=1/100] The rate used to scale trackpad movement to a zoom value.\n * @example\n * // Speed up trackpad zoom\n * map.scrollZoom.setZoomRate(1/25);\n */\n setZoomRate(zoomRate: number) {\n this._defaultZoomRate = zoomRate;\n }\n\n /**\n * Set the zoom rate of a mouse wheel\n * @param {number} [wheelZoomRate=1/450] The rate used to scale mouse wheel movement to a zoom value.\n * @example\n * // Slow down zoom of mouse wheel\n * map.scrollZoom.setWheelZoomRate(1/600);\n */\n setWheelZoomRate(wheelZoomRate: number) {\n this._wheelZoomRate = wheelZoomRate;\n }\n\n /**\n * Returns a Boolean indicating whether the \"scroll to zoom\" interaction is enabled.\n *\n * @returns {boolean} `true` if the \"scroll to zoom\" interaction is enabled.\n */\n isEnabled() {\n return !!this._enabled;\n }\n\n /*\n * Active state is turned on and off with every scroll wheel event and is set back to false before the map\n * render is called, so _active is not a good candidate for determining if a scroll zoom animation is in\n * progress.\n */\n isActive() {\n return !!this._active || this._finishTimeout !== undefined;\n }\n\n isZooming() {\n return !!this._zooming;\n }\n\n /**\n * Enables the \"scroll to zoom\" interaction.\n *\n * @param {Object} [options] Options object.\n * @param {string} [options.around] If \"center\" is passed, map will zoom around center of map\n *\n * @example\n * map.scrollZoom.enable();\n * @example\n * map.scrollZoom.enable({ around: 'center' })\n */\n enable(options: any) {\n if (this.isEnabled()) return;\n this._enabled = true;\n this._aroundCenter = options && options.around === 'center';\n }\n\n /**\n * Disables the \"scroll to zoom\" interaction.\n *\n * @example\n * map.scrollZoom.disable();\n */\n disable() {\n if (!this.isEnabled()) return;\n this._enabled = false;\n }\n\n wheel(e: WheelEvent) {\n if (!this.isEnabled()) return;\n\n // Remove `any` cast when https://github.com/facebook/flow/issues/4879 is fixed.\n let value = e.deltaMode === (window.WheelEvent: any).DOM_DELTA_LINE ? e.deltaY * 40 : e.deltaY;\n const now = browser.now(),\n timeDelta = now - (this._lastWheelEventTime || 0);\n\n this._lastWheelEventTime = now;\n\n if (value !== 0 && (value % wheelZoomDelta) === 0) {\n // This one is definitely a mouse wheel event.\n this._type = 'wheel';\n\n } else if (value !== 0 && Math.abs(value) < 4) {\n // This one is definitely a trackpad event because it is so small.\n this._type = 'trackpad';\n\n } else if (timeDelta > 400) {\n // This is likely a new scroll action.\n this._type = null;\n this._lastValue = value;\n\n // Start a timeout in case this was a singular event, and dely it by up to 40ms.\n this._timeout = setTimeout(this._onTimeout, 40, e);\n\n } else if (!this._type) {\n // This is a repeating event, but we don't know the type of event just yet.\n // If the delta per time is small, we assume it's a fast trackpad; otherwise we switch into wheel mode.\n this._type = (Math.abs(timeDelta * value) < 200) ? 'trackpad' : 'wheel';\n\n // Make sure our delayed event isn't fired again, because we accumulate\n // the previous event (which was less than 40ms ago) into this event.\n if (this._timeout) {\n clearTimeout(this._timeout);\n this._timeout = null;\n value += this._lastValue;\n }\n }\n\n // Slow down zoom if shift key is held for more precise zooming\n if (e.shiftKey && value) value = value / 4;\n\n // Only fire the callback if we actually know what type of scrolling device the user uses.\n if (this._type) {\n this._lastWheelEvent = e;\n this._delta -= value;\n if (!this._active) {\n this._start(e);\n }\n }\n\n e.preventDefault();\n }\n\n _onTimeout(initialEvent: any) {\n this._type = 'wheel';\n this._delta -= this._lastValue;\n if (!this._active) {\n this._start(initialEvent);\n }\n }\n\n _start(e: any) {\n if (!this._delta) return;\n\n if (this._frameId) {\n this._frameId = null;\n }\n\n this._active = true;\n if (!this.isZooming()) {\n this._zooming = true;\n }\n\n if (this._finishTimeout) {\n clearTimeout(this._finishTimeout);\n delete this._finishTimeout;\n }\n\n const pos = DOM.mousePos(this._el, e);\n\n this._around = LngLat.convert(this._aroundCenter ? this._map.getCenter() : this._map.unproject(pos));\n this._aroundPoint = this._map.transform.locationPoint(this._around);\n if (!this._frameId) {\n this._frameId = true;\n this._handler._triggerRenderFrame();\n }\n }\n\n renderFrame() {\n if (!this._frameId) return;\n this._frameId = null;\n\n if (!this.isActive()) return;\n const tr = this._map.transform;\n\n // if we've had scroll events since the last render frame, consume the\n // accumulated delta, and update the target zoom level accordingly\n if (this._delta !== 0) {\n // For trackpad events and single mouse wheel ticks, use the default zoom rate\n const zoomRate = (this._type === 'wheel' && Math.abs(this._delta) > wheelZoomDelta) ? this._wheelZoomRate : this._defaultZoomRate;\n // Scale by sigmoid of scroll wheel delta.\n let scale = maxScalePerFrame / (1 + Math.exp(-Math.abs(this._delta * zoomRate)));\n\n if (this._delta < 0 && scale !== 0) {\n scale = 1 / scale;\n }\n\n const fromScale = typeof this._targetZoom === 'number' ? tr.zoomScale(this._targetZoom) : tr.scale;\n this._targetZoom = Math.min(tr.maxZoom, Math.max(tr.minZoom, tr.scaleZoom(fromScale * scale)));\n\n // if this is a mouse wheel, refresh the starting zoom and easing\n // function we're using to smooth out the zooming between wheel\n // events\n if (this._type === 'wheel') {\n this._startZoom = tr.zoom;\n this._easing = this._smoothOutEasing(200);\n }\n\n this._delta = 0;\n }\n\n const targetZoom = typeof this._targetZoom === 'number' ?\n this._targetZoom : tr.zoom;\n const startZoom = this._startZoom;\n const easing = this._easing;\n\n let finished = false;\n let zoom;\n if (this._type === 'wheel' && startZoom && easing) {\n assert(easing && typeof startZoom === 'number');\n\n const t = Math.min((browser.now() - this._lastWheelEventTime) / 200, 1);\n const k = easing(t);\n zoom = interpolate(startZoom, targetZoom, k);\n if (t < 1) {\n if (!this._frameId) {\n this._frameId = true;\n }\n } else {\n finished = true;\n }\n } else {\n zoom = targetZoom;\n finished = true;\n }\n\n this._active = true;\n\n if (finished) {\n this._active = false;\n this._finishTimeout = setTimeout(() => {\n this._zooming = false;\n this._handler._triggerRenderFrame();\n delete this._targetZoom;\n delete this._finishTimeout;\n }, 200);\n }\n\n return {\n noInertia: true,\n needsRenderFrame: !finished,\n zoomDelta: zoom - tr.zoom,\n around: this._aroundPoint,\n originalEvent: this._lastWheelEvent\n };\n }\n\n _smoothOutEasing(duration: number) {\n let easing = _ease;\n\n if (this._prevEase) {\n const ease = this._prevEase,\n t = (browser.now() - ease.start) / ease.duration,\n speed = ease.easing(t + 0.01) - ease.easing(t),\n\n // Quick hack to make new bezier that is continuous with last\n x = 0.27 / Math.sqrt(speed * speed + 0.0001) * 0.01,\n y = Math.sqrt(0.27 * 0.27 - x * x);\n\n easing = bezier(x, y, 0.25, 1);\n }\n\n this._prevEase = {\n start: browser.now(),\n duration,\n easing\n };\n\n return easing;\n }\n\n blur() {\n this.reset();\n }\n\n reset() {\n this._active = false;\n }\n}\n\nexport default ScrollZoomHandler;\n", "// @flow\n\nimport type ClickZoomHandler from '../click_zoom';\nimport type TapZoomHandler from './../tap_zoom';\n\n/**\n * The `DoubleClickZoomHandler` allows the user to zoom the map at a point by\n * double clicking or double tapping.\n */\nexport default class DoubleClickZoomHandler {\n\n _clickZoom: ClickZoomHandler;\n _tapZoom: TapZoomHandler;\n\n /**\n * @private\n */\n constructor(clickZoom: ClickZoomHandler, TapZoom: TapZoomHandler) {\n this._clickZoom = clickZoom;\n this._tapZoom = TapZoom;\n }\n\n /**\n * Enables the \"double click to zoom\" interaction.\n *\n * @example\n * map.doubleClickZoom.enable();\n */\n enable() {\n this._clickZoom.enable();\n this._tapZoom.enable();\n }\n\n /**\n * Disables the \"double click to zoom\" interaction.\n *\n * @example\n * map.doubleClickZoom.disable();\n */\n disable() {\n this._clickZoom.disable();\n this._tapZoom.disable();\n }\n\n /**\n * Returns a Boolean indicating whether the \"double click to zoom\" interaction is enabled.\n *\n * @returns {boolean} `true` if the \"double click to zoom\" interaction is enabled.\n */\n isEnabled() {\n return this._clickZoom.isEnabled() && this._tapZoom.isEnabled();\n }\n\n /**\n * Returns a Boolean indicating whether the \"double click to zoom\" interaction is active, i.e. currently being used.\n *\n * @returns {boolean} `true` if the \"double click to zoom\" interaction is active.\n */\n isActive() {\n return this._clickZoom.isActive() || this._tapZoom.isActive();\n }\n}\n", "// @flow\n\nimport type Point from '@mapbox/point-geometry';\nimport type Map from '../map';\n\nexport default class ClickZoomHandler {\n\n _enabled: boolean;\n _active: boolean;\n\n constructor() {\n this.reset();\n }\n\n reset() {\n this._active = false;\n }\n\n blur() {\n this.reset();\n }\n\n dblclick(e: MouseEvent, point: Point) {\n e.preventDefault();\n return {\n cameraAnimation: (map: Map) => {\n map.easeTo({\n duration: 300,\n zoom: map.getZoom() + (e.shiftKey ? -1 : 1),\n around: map.unproject(point)\n }, {originalEvent: e});\n }\n };\n }\n\n enable() {\n this._enabled = true;\n }\n\n disable() {\n this._enabled = false;\n this.reset();\n }\n\n isEnabled() {\n return this._enabled;\n }\n\n isActive() {\n return this._active;\n }\n}\n", "// @flow\n\nimport {TapRecognizer, MAX_TAP_INTERVAL} from './tap_recognizer';\nimport type Point from '@mapbox/point-geometry';\n\nexport default class TapDragZoomHandler {\n\n _enabled: boolean;\n _active: boolean;\n _swipePoint: Point;\n _swipeTouch: number;\n _tapTime: number;\n _tap: TapRecognizer;\n\n constructor() {\n\n this._tap = new TapRecognizer({\n numTouches: 1,\n numTaps: 1\n });\n\n this.reset();\n }\n\n reset() {\n this._active = false;\n delete this._swipePoint;\n delete this._swipeTouch;\n delete this._tapTime;\n this._tap.reset();\n }\n\n touchstart(e: TouchEvent, points: Array, mapTouches: Array) {\n if (this._swipePoint) return;\n\n if (this._tapTime && e.timeStamp - this._tapTime > MAX_TAP_INTERVAL) {\n this.reset();\n }\n\n if (!this._tapTime) {\n this._tap.touchstart(e, points, mapTouches);\n } else if (mapTouches.length > 0) {\n this._swipePoint = points[0];\n this._swipeTouch = mapTouches[0].identifier;\n }\n\n }\n\n touchmove(e: TouchEvent, points: Array, mapTouches: Array) {\n if (!this._tapTime) {\n this._tap.touchmove(e, points, mapTouches);\n } else if (this._swipePoint) {\n if (mapTouches[0].identifier !== this._swipeTouch) {\n return;\n }\n\n const newSwipePoint = points[0];\n const dist = newSwipePoint.y - this._swipePoint.y;\n this._swipePoint = newSwipePoint;\n\n e.preventDefault();\n this._active = true;\n\n return {\n zoomDelta: dist / 128\n };\n }\n }\n\n touchend(e: TouchEvent, points: Array, mapTouches: Array) {\n if (!this._tapTime) {\n const point = this._tap.touchend(e, points, mapTouches);\n if (point) {\n this._tapTime = e.timeStamp;\n }\n } else if (this._swipePoint) {\n if (mapTouches.length === 0) {\n this.reset();\n }\n }\n }\n\n touchcancel() {\n this.reset();\n }\n\n enable() {\n this._enabled = true;\n }\n\n disable() {\n this._enabled = false;\n this.reset();\n }\n\n isEnabled() {\n return this._enabled;\n }\n\n isActive() {\n return this._active;\n }\n}\n", "// @flow\n\nimport type {MousePanHandler} from '../mouse';\nimport type TouchPanHandler from './../touch_pan';\n\nexport type DragPanOptions = {\n linearity?: number;\n easing?: (t: number) => number;\n deceleration?: number;\n maxSpeed?: number;\n};\n\n/**\n * The `DragPanHandler` allows the user to pan the map by clicking and dragging\n * the cursor.\n */\nexport default class DragPanHandler {\n\n _el: HTMLElement;\n _mousePan: MousePanHandler;\n _touchPan: TouchPanHandler;\n _inertiaOptions: DragPanOptions\n\n /**\n * @private\n */\n constructor(el: HTMLElement, mousePan: MousePanHandler, touchPan: TouchPanHandler) {\n this._el = el;\n this._mousePan = mousePan;\n this._touchPan = touchPan;\n }\n\n /**\n * Enables the \"drag to pan\" interaction.\n *\n * @param {Object} [options] Options object\n * @param {number} [options.linearity=0] factor used to scale the drag velocity\n * @param {Function} [options.easing=bezier(0, 0, 0.3, 1)] easing function applled to `map.panTo` when applying the drag.\n * @param {number} [options.maxSpeed=1400] the maximum value of the drag velocity.\n * @param {number} [options.deceleration=2500] the rate at which the speed reduces after the pan ends.\n *\n * @example\n * map.dragPan.enable();\n * @example\n * map.dragPan.enable({\n * linearity: 0.3,\n * easing: bezier(0, 0, 0.3, 1),\n * maxSpeed: 1400,\n * deceleration: 2500,\n * });\n */\n enable(options?: DragPanOptions) {\n this._inertiaOptions = options || {};\n this._mousePan.enable();\n this._touchPan.enable();\n this._el.classList.add('mapboxgl-touch-drag-pan');\n }\n\n /**\n * Disables the \"drag to pan\" interaction.\n *\n * @example\n * map.dragPan.disable();\n */\n disable() {\n this._mousePan.disable();\n this._touchPan.disable();\n this._el.classList.remove('mapboxgl-touch-drag-pan');\n }\n\n /**\n * Returns a Boolean indicating whether the \"drag to pan\" interaction is enabled.\n *\n * @returns {boolean} `true` if the \"drag to pan\" interaction is enabled.\n */\n isEnabled() {\n return this._mousePan.isEnabled() && this._touchPan.isEnabled();\n }\n\n /**\n * Returns a Boolean indicating whether the \"drag to pan\" interaction is active, i.e. currently being used.\n *\n * @returns {boolean} `true` if the \"drag to pan\" interaction is active.\n */\n isActive() {\n return this._mousePan.isActive() || this._touchPan.isActive();\n }\n}\n", "// @flow\n\nimport type {MouseRotateHandler, MousePitchHandler} from '../mouse';\n\n/**\n * The `DragRotateHandler` allows the user to rotate the map by clicking and\n * dragging the cursor while holding the right mouse button or `ctrl` key.\n */\nexport default class DragRotateHandler {\n\n _mouseRotate: MouseRotateHandler;\n _mousePitch: MousePitchHandler;\n _pitchWithRotate: boolean;\n\n /**\n * @param {Object} [options]\n * @param {number} [options.bearingSnap] The threshold, measured in degrees, that determines when the map's\n * bearing will snap to north.\n * @param {bool} [options.pitchWithRotate=true] Control the map pitch in addition to the bearing\n * @private\n */\n constructor(options: {pitchWithRotate: boolean}, mouseRotate: MouseRotateHandler, mousePitch: MousePitchHandler) {\n this._pitchWithRotate = options.pitchWithRotate;\n this._mouseRotate = mouseRotate;\n this._mousePitch = mousePitch;\n }\n\n /**\n * Enables the \"drag to rotate\" interaction.\n *\n * @example\n * map.dragRotate.enable();\n */\n enable() {\n this._mouseRotate.enable();\n if (this._pitchWithRotate) this._mousePitch.enable();\n }\n\n /**\n * Disables the \"drag to rotate\" interaction.\n *\n * @example\n * map.dragRotate.disable();\n */\n disable() {\n this._mouseRotate.disable();\n this._mousePitch.disable();\n }\n\n /**\n * Returns a Boolean indicating whether the \"drag to rotate\" interaction is enabled.\n *\n * @returns {boolean} `true` if the \"drag to rotate\" interaction is enabled.\n */\n isEnabled() {\n return this._mouseRotate.isEnabled() && (!this._pitchWithRotate || this._mousePitch.isEnabled());\n }\n\n /**\n * Returns a Boolean indicating whether the \"drag to rotate\" interaction is active, i.e. currently being used.\n *\n * @returns {boolean} `true` if the \"drag to rotate\" interaction is active.\n */\n isActive() {\n return this._mouseRotate.isActive() || this._mousePitch.isActive();\n }\n}\n", "// @flow\n\nimport type {TouchZoomHandler, TouchRotateHandler} from '../touch_zoom_rotate';\nimport type TapDragZoomHandler from '../tap_drag_zoom';\n\n/**\n * The `TouchZoomRotateHandler` allows the user to zoom and rotate the map by\n * pinching on a touchscreen.\n *\n * They can zoom with one finger by double tapping and dragging. On the second tap,\n * hold the finger down and drag up or down to zoom in or out.\n */\nexport default class TouchZoomRotateHandler {\n\n _el: HTMLElement;\n _touchZoom: TouchZoomHandler;\n _touchRotate: TouchRotateHandler;\n _tapDragZoom: TapDragZoomHandler;\n _rotationDisabled: boolean;\n _enabled: boolean;\n\n /**\n * @private\n */\n constructor(el: HTMLElement, touchZoom: TouchZoomHandler, touchRotate: TouchRotateHandler, tapDragZoom: TapDragZoomHandler) {\n this._el = el;\n this._touchZoom = touchZoom;\n this._touchRotate = touchRotate;\n this._tapDragZoom = tapDragZoom;\n this._rotationDisabled = false;\n this._enabled = true;\n }\n\n /**\n * Enables the \"pinch to rotate and zoom\" interaction.\n *\n * @param {Object} [options] Options object.\n * @param {string} [options.around] If \"center\" is passed, map will zoom around the center\n *\n * @example\n * map.touchZoomRotate.enable();\n * @example\n * map.touchZoomRotate.enable({ around: 'center' });\n */\n enable(options: ?{around?: 'center'}) {\n this._touchZoom.enable(options);\n if (!this._rotationDisabled) this._touchRotate.enable(options);\n this._tapDragZoom.enable();\n this._el.classList.add('mapboxgl-touch-zoom-rotate');\n }\n\n /**\n * Disables the \"pinch to rotate and zoom\" interaction.\n *\n * @example\n * map.touchZoomRotate.disable();\n */\n disable() {\n this._touchZoom.disable();\n this._touchRotate.disable();\n this._tapDragZoom.disable();\n this._el.classList.remove('mapboxgl-touch-zoom-rotate');\n }\n\n /**\n * Returns a Boolean indicating whether the \"pinch to rotate and zoom\" interaction is enabled.\n *\n * @returns {boolean} `true` if the \"pinch to rotate and zoom\" interaction is enabled.\n */\n isEnabled() {\n return this._touchZoom.isEnabled() &&\n (this._rotationDisabled || this._touchRotate.isEnabled()) &&\n this._tapDragZoom.isEnabled();\n }\n\n /**\n * Returns true if the handler is enabled and has detected the start of a zoom/rotate gesture.\n *\n * @returns {boolean} //eslint-disable-line\n */\n isActive() {\n return this._touchZoom.isActive() || this._touchRotate.isActive() || this._tapDragZoom.isActive();\n }\n\n /**\n * Disables the \"pinch to rotate\" interaction, leaving the \"pinch to zoom\"\n * interaction enabled.\n *\n * @example\n * map.touchZoomRotate.disableRotation();\n */\n disableRotation() {\n this._rotationDisabled = true;\n this._touchRotate.disable();\n }\n\n /**\n * Enables the \"pinch to rotate\" interaction.\n *\n * @example\n * map.touchZoomRotate.enable();\n * map.touchZoomRotate.enableRotation();\n */\n enableRotation() {\n this._rotationDisabled = false;\n if (this._touchZoom.isEnabled()) this._touchRotate.enable();\n }\n}\n", "// @flow\n\nimport {Event} from '../util/evented';\nimport DOM from '../util/dom';\nimport type Map from './map';\nimport HandlerInertia from './handler_inertia';\nimport {MapEventHandler, BlockableMapEventHandler} from './handler/map_event';\nimport BoxZoomHandler from './handler/box_zoom';\nimport TapZoomHandler from './handler/tap_zoom';\nimport {MousePanHandler, MouseRotateHandler, MousePitchHandler} from './handler/mouse';\nimport TouchPanHandler from './handler/touch_pan';\nimport {TouchZoomHandler, TouchRotateHandler, TouchPitchHandler} from './handler/touch_zoom_rotate';\nimport KeyboardHandler from './handler/keyboard';\nimport ScrollZoomHandler from './handler/scroll_zoom';\nimport DoubleClickZoomHandler from './handler/shim/dblclick_zoom';\nimport ClickZoomHandler from './handler/click_zoom';\nimport TapDragZoomHandler from './handler/tap_drag_zoom';\nimport DragPanHandler from './handler/shim/drag_pan';\nimport DragRotateHandler from './handler/shim/drag_rotate';\nimport TouchZoomRotateHandler from './handler/shim/touch_zoom_rotate';\nimport {bindAll, extend} from '../util/util';\nimport window from '../util/window';\nimport Point from '@mapbox/point-geometry';\nimport assert from 'assert';\n\nexport type InputEvent = MouseEvent | TouchEvent | KeyboardEvent | WheelEvent;\n\nconst isMoving = p => p.zoom || p.drag || p.pitch || p.rotate;\n\nclass RenderFrameEvent extends Event {\n type: 'renderFrame';\n timeStamp: number;\n}\n\n// Handlers interpret dom events and return camera changes that should be\n// applied to the map (`HandlerResult`s). The camera changes are all deltas.\n// The handler itself should have no knowledge of the map's current state.\n// This makes it easier to merge multiple results and keeps handlers simpler.\n// For example, if there is a mousedown and mousemove, the mousePan handler\n// would return a `panDelta` on the mousemove.\nexport interface Handler {\n enable(): void;\n disable(): void;\n isEnabled(): boolean;\n isActive(): boolean;\n\n // `reset` can be called by the manager at any time and must reset everything to it's original state\n reset(): void;\n\n // Handlers can optionally implement these methods.\n // They are called with dom events whenever those dom evens are received.\n +touchstart?: (e: TouchEvent, points: Array, mapTouches: Array) => HandlerResult | void;\n +touchmove?: (e: TouchEvent, points: Array, mapTouches: Array) => HandlerResult | void;\n +touchend?: (e: TouchEvent, points: Array, mapTouches: Array) => HandlerResult | void;\n +touchcancel?: (e: TouchEvent, points: Array, mapTouches: Array) => HandlerResult | void;\n +mousedown?: (e: MouseEvent, point: Point) => HandlerResult | void;\n +mousemove?: (e: MouseEvent, point: Point) => HandlerResult | void;\n +mouseup?: (e: MouseEvent, point: Point) => HandlerResult | void;\n +dblclick?: (e: MouseEvent, point: Point) => HandlerResult | void;\n +wheel?: (e: WheelEvent, point: Point) => HandlerResult | void;\n +keydown?: (e: KeyboardEvent) => HandlerResult | void;\n +keyup?: (e: KeyboardEvent) => HandlerResult | void;\n\n // `renderFrame` is the only non-dom event. It is called during render\n // frames and can be used to smooth camera changes (see scroll handler).\n +renderFrame?: () => HandlerResult | void;\n}\n\n// All handler methods that are called with events can optionally return a `HandlerResult`.\nexport type HandlerResult = {|\n panDelta?: Point,\n zoomDelta?: number,\n bearingDelta?: number,\n pitchDelta?: number,\n // the point to not move when changing the camera\n around?: Point | null,\n // same as above, except for pinch actions, which are given higher priority\n pinchAround?: Point | null,\n // A method that can fire a one-off easing by directly changing the map's camera.\n cameraAnimation?: (map: Map) => any;\n\n // The last three properties are needed by only one handler: scrollzoom.\n // The DOM event to be used as the `originalEvent` on any camera change events.\n originalEvent?: any,\n // Makes the manager trigger a frame, allowing the handler to return multiple results over time (see scrollzoom).\n needsRenderFrame?: boolean,\n // The camera changes won't get recorded for inertial zooming.\n noInertia?: boolean\n|};\n\nfunction hasChange(result: HandlerResult) {\n return (result.panDelta && result.panDelta.mag()) || result.zoomDelta || result.bearingDelta || result.pitchDelta;\n}\n\nclass HandlerManager {\n _map: Map;\n _el: HTMLElement;\n _handlers: Array<{ handlerName: string, handler: Handler, allowed: any }>;\n _eventsInProgress: Object;\n _frameId: number;\n _inertia: HandlerInertia;\n _bearingSnap: number;\n _handlersById: { [string]: Handler };\n _updatingCamera: boolean;\n _changes: Array<[HandlerResult, Object, any]>;\n _previousActiveHandlers: { [string]: Handler };\n _listeners: Array<[HTMLElement, string, void | {passive?: boolean, capture?: boolean}]>;\n\n constructor(map: Map, options: { interactive: boolean, pitchWithRotate: boolean, clickTolerance: number, bearingSnap: number}) {\n this._map = map;\n this._el = this._map.getCanvasContainer();\n this._handlers = [];\n this._handlersById = {};\n this._changes = [];\n\n this._inertia = new HandlerInertia(map);\n this._bearingSnap = options.bearingSnap;\n this._previousActiveHandlers = {};\n\n // Track whether map is currently moving, to compute start/move/end events\n this._eventsInProgress = {};\n\n this._addDefaultHandlers(options);\n\n bindAll(['handleEvent', 'handleWindowEvent'], this);\n\n const el = this._el;\n\n this._listeners = [\n // This needs to be `passive: true` so that a double tap fires two\n // pairs of touchstart/end events in iOS Safari 13. If this is set to\n // `passive: false` then the second pair of events is only fired if\n // preventDefault() is called on the first touchstart. Calling preventDefault()\n // undesirably prevents click events.\n [el, 'touchstart', {passive: true}],\n // This needs to be `passive: false` so that scrolls and pinches can be\n // prevented in browsers that don't support `touch-actions: none`, for example iOS Safari 12.\n [el, 'touchmove', {passive: false}],\n [el, 'touchend', undefined],\n [el, 'touchcancel', undefined],\n\n [el, 'mousedown', undefined],\n [el, 'mousemove', undefined],\n [el, 'mouseup', undefined],\n\n // Bind window-level event listeners for move and up/end events. In the absence of\n // the pointer capture API, which is not supported by all necessary platforms,\n // window-level event listeners give us the best shot at capturing events that\n // fall outside the map canvas element. Use `{capture: true}` for the move event\n // to prevent map move events from being fired during a drag.\n [window.document, 'mousemove', {capture: true}],\n [window.document, 'mouseup', undefined],\n\n [el, 'mouseover', undefined],\n [el, 'mouseout', undefined],\n [el, 'dblclick', undefined],\n [el, 'click', undefined],\n\n [el, 'keydown', {capture: false}],\n [el, 'keyup', undefined],\n\n [el, 'wheel', {passive: false}],\n [el, 'contextmenu', undefined],\n\n [window, 'blur', undefined]\n ];\n\n for (const [target, type, listenerOptions] of this._listeners) {\n DOM.addEventListener(target, type, target === window.document ? this.handleWindowEvent : this.handleEvent, listenerOptions);\n }\n }\n\n destroy() {\n for (const [target, type, listenerOptions] of this._listeners) {\n DOM.removeEventListener(target, type, target === window.document ? this.handleWindowEvent : this.handleEvent, listenerOptions);\n }\n }\n\n _addDefaultHandlers(options: { interactive: boolean, pitchWithRotate: boolean, clickTolerance: number }) {\n const map = this._map;\n const el = map.getCanvasContainer();\n this._add('mapEvent', new MapEventHandler(map, options));\n\n const boxZoom = map.boxZoom = new BoxZoomHandler(map, options);\n this._add('boxZoom', boxZoom);\n\n const tapZoom = new TapZoomHandler();\n const clickZoom = new ClickZoomHandler();\n map.doubleClickZoom = new DoubleClickZoomHandler(clickZoom, tapZoom);\n this._add('tapZoom', tapZoom);\n this._add('clickZoom', clickZoom);\n\n const tapDragZoom = new TapDragZoomHandler();\n this._add('tapDragZoom', tapDragZoom);\n\n const touchPitch = map.touchPitch = new TouchPitchHandler();\n this._add('touchPitch', touchPitch);\n\n const mouseRotate = new MouseRotateHandler(options);\n const mousePitch = new MousePitchHandler(options);\n map.dragRotate = new DragRotateHandler(options, mouseRotate, mousePitch);\n this._add('mouseRotate', mouseRotate, ['mousePitch']);\n this._add('mousePitch', mousePitch, ['mouseRotate']);\n\n const mousePan = new MousePanHandler(options);\n const touchPan = new TouchPanHandler(options);\n map.dragPan = new DragPanHandler(el, mousePan, touchPan);\n this._add('mousePan', mousePan);\n this._add('touchPan', touchPan, ['touchZoom', 'touchRotate']);\n\n const touchRotate = new TouchRotateHandler();\n const touchZoom = new TouchZoomHandler();\n map.touchZoomRotate = new TouchZoomRotateHandler(el, touchZoom, touchRotate, tapDragZoom);\n this._add('touchRotate', touchRotate, ['touchPan', 'touchZoom']);\n this._add('touchZoom', touchZoom, ['touchPan', 'touchRotate']);\n\n const scrollZoom = map.scrollZoom = new ScrollZoomHandler(map, this);\n this._add('scrollZoom', scrollZoom, ['mousePan']);\n\n const keyboard = map.keyboard = new KeyboardHandler();\n this._add('keyboard', keyboard);\n\n this._add('blockableMapEvent', new BlockableMapEventHandler(map));\n\n for (const name of ['boxZoom', 'doubleClickZoom', 'tapDragZoom', 'touchPitch', 'dragRotate', 'dragPan', 'touchZoomRotate', 'scrollZoom', 'keyboard']) {\n if (options.interactive && (options: any)[name]) {\n (map: any)[name].enable((options: any)[name]);\n }\n }\n }\n\n _add(handlerName: string, handler: Handler, allowed?: Array) {\n this._handlers.push({handlerName, handler, allowed});\n this._handlersById[handlerName] = handler;\n }\n\n stop(allowEndAnimation: boolean) {\n // do nothing if this method was triggered by a gesture update\n if (this._updatingCamera) return;\n\n for (const {handler} of this._handlers) {\n handler.reset();\n }\n this._inertia.clear();\n this._fireEvents({}, {}, allowEndAnimation);\n this._changes = [];\n }\n\n isActive() {\n for (const {handler} of this._handlers) {\n if (handler.isActive()) return true;\n }\n return false;\n }\n\n isZooming() {\n return !!this._eventsInProgress.zoom || this._map.scrollZoom.isZooming();\n }\n isRotating() {\n return !!this._eventsInProgress.rotate;\n }\n\n isMoving() {\n return Boolean(isMoving(this._eventsInProgress)) || this.isZooming();\n }\n\n _blockedByActive(activeHandlers: { [string]: Handler }, allowed: Array, myName: string) {\n for (const name in activeHandlers) {\n if (name === myName) continue;\n if (!allowed || allowed.indexOf(name) < 0) {\n return true;\n }\n }\n return false;\n }\n\n handleWindowEvent(e: InputEvent) {\n this.handleEvent(e, `${e.type}Window`);\n }\n\n _getMapTouches(touches: TouchList) {\n const mapTouches = [];\n for (const t of touches) {\n const target = ((t.target: any): Node);\n if (this._el.contains(target)) {\n mapTouches.push(t);\n }\n }\n return ((mapTouches: any): TouchList);\n }\n\n handleEvent(e: InputEvent | RenderFrameEvent, eventName?: string) {\n\n this._updatingCamera = true;\n assert(e.timeStamp !== undefined);\n\n const inputEvent = e.type === 'renderFrame' ? undefined : ((e: any): InputEvent);\n\n /*\n * We don't call e.preventDefault() for any events by default.\n * Handlers are responsible for calling it where necessary.\n */\n\n const mergedHandlerResult: HandlerResult = {needsRenderFrame: false};\n const eventsInProgress = {};\n const activeHandlers = {};\n\n const mapTouches = e.touches ? this._getMapTouches(((e: any): TouchEvent).touches) : undefined;\n const points = mapTouches ? DOM.touchPos(this._el, mapTouches) : DOM.mousePos(this._el, ((e: any): MouseEvent));\n\n for (const {handlerName, handler, allowed} of this._handlers) {\n if (!handler.isEnabled()) continue;\n\n let data: HandlerResult | void;\n if (this._blockedByActive(activeHandlers, allowed, handlerName)) {\n handler.reset();\n\n } else {\n if ((handler: any)[eventName || e.type]) {\n data = (handler: any)[eventName || e.type](e, points, mapTouches);\n this.mergeHandlerResult(mergedHandlerResult, eventsInProgress, data, handlerName, inputEvent);\n if (data && data.needsRenderFrame) {\n this._triggerRenderFrame();\n }\n }\n }\n\n if (data || handler.isActive()) {\n activeHandlers[handlerName] = handler;\n }\n }\n\n const deactivatedHandlers = {};\n for (const name in this._previousActiveHandlers) {\n if (!activeHandlers[name]) {\n deactivatedHandlers[name] = inputEvent;\n }\n }\n this._previousActiveHandlers = activeHandlers;\n\n if (Object.keys(deactivatedHandlers).length || hasChange(mergedHandlerResult)) {\n this._changes.push([mergedHandlerResult, eventsInProgress, deactivatedHandlers]);\n this._triggerRenderFrame();\n }\n\n if (Object.keys(activeHandlers).length || hasChange(mergedHandlerResult)) {\n this._map._stop(true);\n }\n\n this._updatingCamera = false;\n\n const {cameraAnimation} = mergedHandlerResult;\n if (cameraAnimation) {\n this._inertia.clear();\n this._fireEvents({}, {}, true);\n this._changes = [];\n cameraAnimation(this._map);\n }\n }\n\n mergeHandlerResult(mergedHandlerResult: HandlerResult, eventsInProgress: Object, handlerResult: HandlerResult, name: string, e?: InputEvent) {\n if (!handlerResult) return;\n\n extend(mergedHandlerResult, handlerResult);\n\n const eventData = {handlerName: name, originalEvent: handlerResult.originalEvent || e};\n\n // track which handler changed which camera property\n if (handlerResult.zoomDelta !== undefined) {\n eventsInProgress.zoom = eventData;\n }\n if (handlerResult.panDelta !== undefined) {\n eventsInProgress.drag = eventData;\n }\n if (handlerResult.pitchDelta !== undefined) {\n eventsInProgress.pitch = eventData;\n }\n if (handlerResult.bearingDelta !== undefined) {\n eventsInProgress.rotate = eventData;\n }\n\n }\n\n _applyChanges() {\n const combined = {};\n const combinedEventsInProgress = {};\n const combinedDeactivatedHandlers = {};\n\n for (const [change, eventsInProgress, deactivatedHandlers] of this._changes) {\n\n if (change.panDelta) combined.panDelta = (combined.panDelta || new Point(0, 0))._add(change.panDelta);\n if (change.zoomDelta) combined.zoomDelta = (combined.zoomDelta || 0) + change.zoomDelta;\n if (change.bearingDelta) combined.bearingDelta = (combined.bearingDelta || 0) + change.bearingDelta;\n if (change.pitchDelta) combined.pitchDelta = (combined.pitchDelta || 0) + change.pitchDelta;\n if (change.around !== undefined) combined.around = change.around;\n if (change.pinchAround !== undefined) combined.pinchAround = change.pinchAround;\n if (change.noInertia) combined.noInertia = change.noInertia;\n\n extend(combinedEventsInProgress, eventsInProgress);\n extend(combinedDeactivatedHandlers, deactivatedHandlers);\n }\n\n this._updateMapTransform(combined, combinedEventsInProgress, combinedDeactivatedHandlers);\n this._changes = [];\n }\n\n _updateMapTransform(combinedResult: any, combinedEventsInProgress: Object, deactivatedHandlers: Object) {\n\n const map = this._map;\n const tr = map.transform;\n\n if (!hasChange(combinedResult)) {\n return this._fireEvents(combinedEventsInProgress, deactivatedHandlers, true);\n }\n\n let {panDelta, zoomDelta, bearingDelta, pitchDelta, around, pinchAround} = combinedResult;\n\n if (pinchAround !== undefined) {\n around = pinchAround;\n }\n\n // stop any ongoing camera animations (easeTo, flyTo)\n map._stop(true);\n\n around = around || map.transform.centerPoint;\n const loc = tr.pointLocation(panDelta ? around.sub(panDelta) : around);\n if (bearingDelta) tr.bearing += bearingDelta;\n if (pitchDelta) tr.pitch += pitchDelta;\n if (zoomDelta) tr.zoom += zoomDelta;\n tr.setLocationAtPoint(loc, around);\n\n this._map._update();\n if (!combinedResult.noInertia) this._inertia.record(combinedResult);\n this._fireEvents(combinedEventsInProgress, deactivatedHandlers, true);\n\n }\n\n _fireEvents(newEventsInProgress: { [string]: Object }, deactivatedHandlers: Object, allowEndAnimation: boolean) {\n\n const wasMoving = isMoving(this._eventsInProgress);\n const nowMoving = isMoving(newEventsInProgress);\n\n const startEvents = {};\n\n for (const eventName in newEventsInProgress) {\n const {originalEvent} = newEventsInProgress[eventName];\n if (!this._eventsInProgress[eventName]) {\n startEvents[`${eventName}start`] = originalEvent;\n }\n this._eventsInProgress[eventName] = newEventsInProgress[eventName];\n }\n\n // fire start events only after this._eventsInProgress has been updated\n if (!wasMoving && nowMoving) {\n this._fireEvent('movestart', nowMoving.originalEvent);\n }\n\n for (const name in startEvents) {\n this._fireEvent(name, startEvents[name]);\n }\n\n if (nowMoving) {\n this._fireEvent('move', nowMoving.originalEvent);\n }\n\n for (const eventName in newEventsInProgress) {\n const {originalEvent} = newEventsInProgress[eventName];\n this._fireEvent(eventName, originalEvent);\n }\n\n const endEvents = {};\n\n let originalEndEvent;\n for (const eventName in this._eventsInProgress) {\n const {handlerName, originalEvent} = this._eventsInProgress[eventName];\n if (!this._handlersById[handlerName].isActive()) {\n delete this._eventsInProgress[eventName];\n originalEndEvent = deactivatedHandlers[handlerName] || originalEvent;\n endEvents[`${eventName}end`] = originalEndEvent;\n }\n }\n\n for (const name in endEvents) {\n this._fireEvent(name, endEvents[name]);\n }\n\n const stillMoving = isMoving(this._eventsInProgress);\n if (allowEndAnimation && (wasMoving || nowMoving) && !stillMoving) {\n this._updatingCamera = true;\n const inertialEase = this._inertia._onMoveEnd(this._map.dragPan._inertiaOptions);\n\n const shouldSnapToNorth = bearing => bearing !== 0 && -this._bearingSnap < bearing && bearing < this._bearingSnap;\n\n if (inertialEase) {\n if (shouldSnapToNorth(inertialEase.bearing || this._map.getBearing())) {\n inertialEase.bearing = 0;\n }\n this._map.easeTo(inertialEase, {originalEvent: originalEndEvent});\n } else {\n this._map.fire(new Event('moveend', {originalEvent: originalEndEvent}));\n if (shouldSnapToNorth(this._map.getBearing())) {\n this._map.resetNorth();\n }\n }\n this._updatingCamera = false;\n }\n\n }\n\n _fireEvent(type: string, e: *) {\n this._map.fire(new Event(type, e ? {originalEvent: e} : {}));\n }\n\n _requestFrame() {\n this._map.triggerRepaint();\n return this._map._renderTaskQueue.add(timeStamp => {\n delete this._frameId;\n this.handleEvent(new RenderFrameEvent('renderFrame', {timeStamp}));\n this._applyChanges();\n });\n }\n\n _triggerRenderFrame() {\n if (this._frameId === undefined) {\n this._frameId = this._requestFrame();\n }\n }\n\n}\n\nexport default HandlerManager;\n", "// @flow\n\nimport {\n bindAll,\n extend,\n warnOnce,\n clamp,\n wrap,\n ease as defaultEasing,\n pick\n} from '../util/util';\nimport {number as interpolate} from '../style-spec/util/interpolate';\nimport browser from '../util/browser';\nimport LngLat from '../geo/lng_lat';\nimport LngLatBounds from '../geo/lng_lat_bounds';\nimport Point from '@mapbox/point-geometry';\nimport {Event, Evented} from '../util/evented';\nimport assert from 'assert';\nimport {Debug} from '../util/debug';\n\nimport type Transform from '../geo/transform';\nimport type {LngLatLike} from '../geo/lng_lat';\nimport type {LngLatBoundsLike} from '../geo/lng_lat_bounds';\nimport type {TaskID} from '../util/task_queue';\nimport type {PointLike} from '@mapbox/point-geometry';\nimport type {PaddingOptions} from '../geo/edge_insets';\n\n/**\n * Options common to {@link Map#jumpTo}, {@link Map#easeTo}, and {@link Map#flyTo}, controlling the desired location,\n * zoom, bearing, and pitch of the camera. All properties are optional, and when a property is omitted, the current\n * camera value for that property will remain unchanged.\n *\n * @typedef {Object} CameraOptions\n * @property {LngLatLike} center The desired center.\n * @property {number} zoom The desired zoom level.\n * @property {number} bearing The desired bearing in degrees. The bearing is the compass direction that\n * is \"up\". For example, `bearing: 90` orients the map so that east is up.\n * @property {number} pitch The desired pitch in degrees. The pitch is the angle towards the horizon\n * measured in degrees with a range between 0 and 60 degrees. For example, pitch: 0 provides the appearance\n * of looking straight down at the map, while pitch: 60 tilts the user's perspective towards the horizon.\n * Increasing the pitch value is often used to display 3D objects.\n * @property {LngLatLike} around If `zoom` is specified, `around` determines the point around which the zoom is centered.\n * @property {PaddingOptions} padding Dimensions in pixels applied on each side of the viewport for shifting the vanishing point.\n * @example\n * // set the map's initial perspective with CameraOptions\n * var map = new mapboxgl.Map({\n * container: 'map',\n * style: 'mapbox://styles/mapbox/streets-v11',\n * center: [-73.5804, 45.53483],\n * pitch: 60,\n * bearing: -60,\n * zoom: 10\n * });\n * @see [Set pitch and bearing](https://docs.mapbox.com/mapbox-gl-js/example/set-perspective/)\n * @see [Jump to a series of locations](https://docs.mapbox.com/mapbox-gl-js/example/jump-to/)\n * @see [Fly to a location](https://docs.mapbox.com/mapbox-gl-js/example/flyto/)\n * @see [Display buildings in 3D](https://docs.mapbox.com/mapbox-gl-js/example/3d-buildings/)\n */\nexport type CameraOptions = {\n center?: LngLatLike,\n zoom?: number,\n bearing?: number,\n pitch?: number,\n around?: LngLatLike,\n padding?: PaddingOptions\n};\n\n/**\n * Options common to map movement methods that involve animation, such as {@link Map#panBy} and\n * {@link Map#easeTo}, controlling the duration and easing function of the animation. All properties\n * are optional.\n *\n * @typedef {Object} AnimationOptions\n * @property {number} duration The animation's duration, measured in milliseconds.\n * @property {Function} easing A function taking a time in the range 0..1 and returning a number where 0 is\n * the initial state and 1 is the final state.\n * @property {PointLike} offset of the target center relative to real map container center at the end of animation.\n * @property {boolean} animate If `false`, no animation will occur.\n * @property {boolean} essential If `true`, then the animation is considered essential and will not be affected by\n * [`prefers-reduced-motion`](https://developer.mozilla.org/en-US/docs/Web/CSS/@media/prefers-reduced-motion).\n */\nexport type AnimationOptions = {\n duration?: number,\n easing?: (_: number) => number,\n offset?: PointLike,\n animate?: boolean,\n essential?: boolean\n};\n\n/**\n * Options for setting padding on calls to methods such as {@link Map#fitBounds}, {@link Map#fitScreenCoordinates}, and {@link Map#setPadding}. Adjust these options to set the amount of padding in pixels added to the edges of the canvas. Set a uniform padding on all edges or individual values for each edge. All properties of this object must be\n * non-negative integers.\n *\n * @typedef {Object} PaddingOptions\n * @property {number} top Padding in pixels from the top of the map canvas.\n * @property {number} bottom Padding in pixels from the bottom of the map canvas.\n * @property {number} left Padding in pixels from the left of the map canvas.\n * @property {number} right Padding in pixels from the right of the map canvas.\n *\n * @example\n * var bbox = [[-79, 43], [-73, 45]];\n * map.fitBounds(bbox, {\n * padding: {top: 10, bottom:25, left: 15, right: 5}\n * });\n *\n * @example\n * var bbox = [[-79, 43], [-73, 45]];\n * map.fitBounds(bbox, {\n * padding: 20\n * });\n * @see [Fit to the bounds of a LineString](https://docs.mapbox.com/mapbox-gl-js/example/zoomto-linestring/)\n * @see [Fit a map to a bounding box](https://docs.mapbox.com/mapbox-gl-js/example/fitbounds/)\n */\n\nclass Camera extends Evented {\n transform: Transform;\n _moving: boolean;\n _zooming: boolean;\n _rotating: boolean;\n _pitching: boolean;\n _padding: boolean;\n\n _bearingSnap: number;\n _easeStart: number;\n _easeOptions: {duration: number, easing: (_: number) => number};\n _easeId: string | void;\n\n _onEaseFrame: (_: number) => void;\n _onEaseEnd: (easeId?: string) => void;\n _easeFrameId: ?TaskID;\n\n +_requestRenderFrame: (() => void) => TaskID;\n +_cancelRenderFrame: (_: TaskID) => void;\n\n constructor(transform: Transform, options: {bearingSnap: number}) {\n super();\n this._moving = false;\n this._zooming = false;\n this.transform = transform;\n this._bearingSnap = options.bearingSnap;\n\n bindAll(['_renderFrameCallback'], this);\n\n //addAssertions(this);\n }\n\n /**\n * Returns the map's geographical centerpoint.\n *\n * @memberof Map#\n * @returns The map's geographical centerpoint.\n * @example\n * // return a LngLat object such as {lng: 0, lat: 0}\n * var center = map.getCenter();\n * // access longitude and latitude values directly\n * var {longitude, latitude} = map.getCenter();\n * @see Tutorial: [Use Mapbox GL JS in a React app](https://docs.mapbox.com/help/tutorials/use-mapbox-gl-js-with-react/#store-the-new-coordinates)\n */\n getCenter(): LngLat { return new LngLat(this.transform.center.lng, this.transform.center.lat); }\n\n /**\n * Sets the map's geographical centerpoint. Equivalent to `jumpTo({center: center})`.\n *\n * @memberof Map#\n * @param center The centerpoint to set.\n * @param eventData Additional properties to be added to event objects of events triggered by this method.\n * @fires movestart\n * @fires moveend\n * @returns {Map} `this`\n * @example\n * map.setCenter([-74, 38]);\n */\n setCenter(center: LngLatLike, eventData?: Object) {\n return this.jumpTo({center}, eventData);\n }\n\n /**\n * Pans the map by the specified offset.\n *\n * @memberof Map#\n * @param offset `x` and `y` coordinates by which to pan the map.\n * @param options Options object\n * @param eventData Additional properties to be added to event objects of events triggered by this method.\n * @fires movestart\n * @fires moveend\n * @returns {Map} `this`\n * @see [Navigate the map with game-like controls](https://www.mapbox.com/mapbox-gl-js/example/game-controls/)\n */\n panBy(offset: PointLike, options?: AnimationOptions, eventData?: Object) {\n offset = Point.convert(offset).mult(-1);\n return this.panTo(this.transform.center, extend({offset}, options), eventData);\n }\n\n /**\n * Pans the map to the specified location with an animated transition.\n *\n * @memberof Map#\n * @param lnglat The location to pan the map to.\n * @param options Options describing the destination and animation of the transition.\n * @param eventData Additional properties to be added to event objects of events triggered by this method.\n * @fires movestart\n * @fires moveend\n * @returns {Map} `this`\n * @example\n * map.panTo([-74, 38]);\n * @example\n * // Specify that the panTo animation should last 5000 milliseconds.\n * map.panTo([-74, 38], {duration: 5000});\n * @see [Update a feature in realtime](https://docs.mapbox.com/mapbox-gl-js/example/live-update-feature/)\n */\n panTo(lnglat: LngLatLike, options?: AnimationOptions, eventData?: Object) {\n return this.easeTo(extend({\n center: lnglat\n }, options), eventData);\n }\n\n /**\n * Returns the map's current zoom level.\n *\n * @memberof Map#\n * @returns The map's current zoom level.\n * @example\n * map.getZoom();\n */\n getZoom(): number { return this.transform.zoom; }\n\n /**\n * Sets the map's zoom level. Equivalent to `jumpTo({zoom: zoom})`.\n *\n * @memberof Map#\n * @param zoom The zoom level to set (0-20).\n * @param eventData Additional properties to be added to event objects of events triggered by this method.\n * @fires movestart\n * @fires zoomstart\n * @fires move\n * @fires zoom\n * @fires moveend\n * @fires zoomend\n * @returns {Map} `this`\n * @example\n * // Zoom to the zoom level 5 without an animated transition\n * map.setZoom(5);\n */\n setZoom(zoom: number, eventData?: Object) {\n this.jumpTo({zoom}, eventData);\n return this;\n }\n\n /**\n * Zooms the map to the specified zoom level, with an animated transition.\n *\n * @memberof Map#\n * @param zoom The zoom level to transition to.\n * @param options Options object\n * @param eventData Additional properties to be added to event objects of events triggered by this method.\n * @fires movestart\n * @fires zoomstart\n * @fires move\n * @fires zoom\n * @fires moveend\n * @fires zoomend\n * @returns {Map} `this`\n * @example\n * // Zoom to the zoom level 5 without an animated transition\n * map.zoomTo(5);\n * // Zoom to the zoom level 8 with an animated transition\n * map.zoomTo(8, {\n * duration: 2000,\n * offset: [100, 50]\n * });\n */\n zoomTo(zoom: number, options: ? AnimationOptions, eventData?: Object) {\n return this.easeTo(extend({\n zoom\n }, options), eventData);\n }\n\n /**\n * Increases the map's zoom level by 1.\n *\n * @memberof Map#\n * @param options Options object\n * @param eventData Additional properties to be added to event objects of events triggered by this method.\n * @fires movestart\n * @fires zoomstart\n * @fires move\n * @fires zoom\n * @fires moveend\n * @fires zoomend\n * @returns {Map} `this`\n * @example\n * // zoom the map in one level with a custom animation duration\n * map.zoomIn({duration: 1000});\n */\n zoomIn(options?: AnimationOptions, eventData?: Object) {\n this.zoomTo(this.getZoom() + 1, options, eventData);\n return this;\n }\n\n /**\n * Decreases the map's zoom level by 1.\n *\n * @memberof Map#\n * @param options Options object\n * @param eventData Additional properties to be added to event objects of events triggered by this method.\n * @fires movestart\n * @fires zoomstart\n * @fires move\n * @fires zoom\n * @fires moveend\n * @fires zoomend\n * @returns {Map} `this`\n * @example\n * // zoom the map out one level with a custom animation offset\n * map.zoomOut({offset: [80, 60]});\n */\n zoomOut(options?: AnimationOptions, eventData?: Object) {\n this.zoomTo(this.getZoom() - 1, options, eventData);\n return this;\n }\n\n /**\n * Returns the map's current bearing. The bearing is the compass direction that is \"up\"; for example, a bearing\n * of 90° orients the map so that east is up.\n *\n * @memberof Map#\n * @returns The map's current bearing.\n * @see [Navigate the map with game-like controls](https://www.mapbox.com/mapbox-gl-js/example/game-controls/)\n */\n getBearing(): number { return this.transform.bearing; }\n\n /**\n * Sets the map's bearing (rotation). The bearing is the compass direction that is \"up\"; for example, a bearing\n * of 90° orients the map so that east is up.\n *\n * Equivalent to `jumpTo({bearing: bearing})`.\n *\n * @memberof Map#\n * @param bearing The desired bearing.\n * @param eventData Additional properties to be added to event objects of events triggered by this method.\n * @fires movestart\n * @fires moveend\n * @returns {Map} `this`\n * @example\n * // rotate the map to 90 degrees\n * map.setBearing(90);\n */\n setBearing(bearing: number, eventData?: Object) {\n this.jumpTo({bearing}, eventData);\n return this;\n }\n\n /**\n * Returns the current padding applied around the map viewport.\n *\n * @memberof Map#\n * @returns The current padding around the map viewport.\n */\n getPadding(): PaddingOptions { return this.transform.padding; }\n\n /**\n * Sets the padding in pixels around the viewport.\n *\n * Equivalent to `jumpTo({padding: padding})`.\n *\n * @memberof Map#\n * @param padding The desired padding. Format: { left: number, right: number, top: number, bottom: number }\n * @param eventData Additional properties to be added to event objects of events triggered by this method.\n * @fires movestart\n * @fires moveend\n * @returns {Map} `this`\n * @example\n * // Sets a left padding of 300px, and a top padding of 50px\n * map.setPadding({ left: 300, top: 50 });\n */\n setPadding(padding: PaddingOptions, eventData?: Object) {\n this.jumpTo({padding}, eventData);\n return this;\n }\n\n /**\n * Rotates the map to the specified bearing, with an animated transition. The bearing is the compass direction\n * that is \\\"up\\\"; for example, a bearing of 90° orients the map so that east is up.\n *\n * @memberof Map#\n * @param bearing The desired bearing.\n * @param options Options object\n * @param eventData Additional properties to be added to event objects of events triggered by this method.\n * @fires movestart\n * @fires moveend\n * @returns {Map} `this`\n */\n rotateTo(bearing: number, options?: AnimationOptions, eventData?: Object) {\n return this.easeTo(extend({\n bearing\n }, options), eventData);\n }\n\n /**\n * Rotates the map so that north is up (0° bearing), with an animated transition.\n *\n * @memberof Map#\n * @param options Options object\n * @param eventData Additional properties to be added to event objects of events triggered by this method.\n * @fires movestart\n * @fires moveend\n * @returns {Map} `this`\n */\n resetNorth(options?: AnimationOptions, eventData?: Object) {\n this.rotateTo(0, extend({duration: 1000}, options), eventData);\n return this;\n }\n\n /**\n * Rotates and pitches the map so that north is up (0° bearing) and pitch is 0°, with an animated transition.\n *\n * @memberof Map#\n * @param options Options object\n * @param eventData Additional properties to be added to event objects of events triggered by this method.\n * @fires movestart\n * @fires moveend\n * @returns {Map} `this`\n */\n resetNorthPitch(options?: AnimationOptions, eventData?: Object) {\n this.easeTo(extend({\n bearing: 0,\n pitch: 0,\n duration: 1000\n }, options), eventData);\n return this;\n }\n\n /**\n * Snaps the map so that north is up (0° bearing), if the current bearing is close enough to it (i.e. within the\n * `bearingSnap` threshold).\n *\n * @memberof Map#\n * @param options Options object\n * @param eventData Additional properties to be added to event objects of events triggered by this method.\n * @fires movestart\n * @fires moveend\n * @returns {Map} `this`\n */\n snapToNorth(options?: AnimationOptions, eventData?: Object) {\n if (Math.abs(this.getBearing()) < this._bearingSnap) {\n return this.resetNorth(options, eventData);\n }\n return this;\n }\n\n /**\n * Returns the map's current pitch (tilt).\n *\n * @memberof Map#\n * @returns The map's current pitch, measured in degrees away from the plane of the screen.\n */\n getPitch(): number { return this.transform.pitch; }\n\n /**\n * Sets the map's pitch (tilt). Equivalent to `jumpTo({pitch: pitch})`.\n *\n * @memberof Map#\n * @param pitch The pitch to set, measured in degrees away from the plane of the screen (0-60).\n * @param eventData Additional properties to be added to event objects of events triggered by this method.\n * @fires pitchstart\n * @fires movestart\n * @fires moveend\n * @returns {Map} `this`\n */\n setPitch(pitch: number, eventData?: Object) {\n this.jumpTo({pitch}, eventData);\n return this;\n }\n\n /**\n * @memberof Map#\n * @param {LngLatBoundsLike} bounds Calculate the center for these bounds in the viewport and use\n * the highest zoom level up to and including `Map#getMaxZoom()` that fits\n * in the viewport. LngLatBounds represent a box that is always axis-aligned with bearing 0.\n * @param options Options object\n * @param {number | PaddingOptions} [options.padding] The amount of padding in pixels to add to the given bounds.\n * @param {number} [options.bearing=0] Desired map bearing at end of animation, in degrees.\n * @param {PointLike} [options.offset=[0, 0]] The center of the given bounds relative to the map's center, measured in pixels.\n * @param {number} [options.maxZoom] The maximum zoom level to allow when the camera would transition to the specified bounds.\n * @returns {CameraOptions | void} If map is able to fit to provided bounds, returns `CameraOptions` with\n * `center`, `zoom`, and `bearing`. If map is unable to fit, method will warn and return undefined.\n * @example\n * var bbox = [[-79, 43], [-73, 45]];\n * var newCameraTransform = map.cameraForBounds(bbox, {\n * padding: {top: 10, bottom:25, left: 15, right: 5}\n * });\n */\n cameraForBounds(bounds: LngLatBoundsLike, options?: CameraOptions): void | CameraOptions & AnimationOptions {\n bounds = LngLatBounds.convert(bounds);\n const bearing = options && options.bearing || 0;\n return this._cameraForBoxAndBearing(bounds.getNorthWest(), bounds.getSouthEast(), bearing, options);\n }\n\n /**\n * Calculate the center of these two points in the viewport and use\n * the highest zoom level up to and including `Map#getMaxZoom()` that fits\n * the points in the viewport at the specified bearing.\n * @memberof Map#\n * @param {LngLatLike} p0 First point\n * @param {LngLatLike} p1 Second point\n * @param bearing Desired map bearing at end of animation, in degrees\n * @param options\n * @param {number | PaddingOptions} [options.padding] The amount of padding in pixels to add to the given bounds.\n * @param {PointLike} [options.offset=[0, 0]] The center of the given bounds relative to the map's center, measured in pixels.\n * @param {number} [options.maxZoom] The maximum zoom level to allow when the camera would transition to the specified bounds.\n * @returns {CameraOptions | void} If map is able to fit to provided bounds, returns `CameraOptions` with\n * `center`, `zoom`, and `bearing`. If map is unable to fit, method will warn and return undefined.\n * @private\n * @example\n * var p0 = [-79, 43];\n * var p1 = [-73, 45];\n * var bearing = 90;\n * var newCameraTransform = map._cameraForBoxAndBearing(p0, p1, bearing, {\n * padding: {top: 10, bottom:25, left: 15, right: 5}\n * });\n */\n _cameraForBoxAndBearing(p0: LngLatLike, p1: LngLatLike, bearing: number, options?: CameraOptions): void | CameraOptions & AnimationOptions {\n const defaultPadding = {\n top: 0,\n bottom: 0,\n right: 0,\n left: 0\n };\n options = extend({\n padding: defaultPadding,\n offset: [0, 0],\n maxZoom: this.transform.maxZoom\n }, options);\n\n if (typeof options.padding === 'number') {\n const p = options.padding;\n options.padding = {\n top: p,\n bottom: p,\n right: p,\n left: p\n };\n }\n\n options.padding = extend(defaultPadding, options.padding);\n const tr = this.transform;\n const edgePadding = tr.padding;\n\n // We want to calculate the upper right and lower left of the box defined by p0 and p1\n // in a coordinate system rotate to match the destination bearing.\n const p0world = tr.project(LngLat.convert(p0));\n const p1world = tr.project(LngLat.convert(p1));\n const p0rotated = p0world.rotate(-bearing * Math.PI / 180);\n const p1rotated = p1world.rotate(-bearing * Math.PI / 180);\n\n const upperRight = new Point(Math.max(p0rotated.x, p1rotated.x), Math.max(p0rotated.y, p1rotated.y));\n const lowerLeft = new Point(Math.min(p0rotated.x, p1rotated.x), Math.min(p0rotated.y, p1rotated.y));\n\n // Calculate zoom: consider the original bbox and padding.\n const size = upperRight.sub(lowerLeft);\n const scaleX = (tr.width - (edgePadding.left + edgePadding.right + options.padding.left + options.padding.right)) / size.x;\n const scaleY = (tr.height - (edgePadding.top + edgePadding.bottom + options.padding.top + options.padding.bottom)) / size.y;\n\n if (scaleY < 0 || scaleX < 0) {\n warnOnce(\n 'Map cannot fit within canvas with the given bounds, padding, and/or offset.'\n );\n return;\n }\n\n const zoom = Math.min(tr.scaleZoom(tr.scale * Math.min(scaleX, scaleY)), options.maxZoom);\n\n // Calculate center: apply the zoom, the configured offset, as well as offset that exists as a result of padding.\n const offset = (typeof options.offset.x === 'number') ? new Point(options.offset.x, options.offset.y) : Point.convert(options.offset);\n const paddingOffsetX = (options.padding.left - options.padding.right) / 2;\n const paddingOffsetY = (options.padding.top - options.padding.bottom) / 2;\n const paddingOffset = new Point(paddingOffsetX, paddingOffsetY);\n const rotatedPaddingOffset = paddingOffset.rotate(bearing * Math.PI / 180);\n const offsetAtInitialZoom = offset.add(rotatedPaddingOffset);\n const offsetAtFinalZoom = offsetAtInitialZoom.mult(tr.scale / tr.zoomScale(zoom));\n\n const center = tr.unproject(p0world.add(p1world).div(2).sub(offsetAtFinalZoom));\n\n return {\n center,\n zoom,\n bearing\n };\n }\n\n /**\n * Pans and zooms the map to contain its visible area within the specified geographical bounds.\n * This function will also reset the map's bearing to 0 if bearing is nonzero.\n *\n * @memberof Map#\n * @param bounds Center these bounds in the viewport and use the highest\n * zoom level up to and including `Map#getMaxZoom()` that fits them in the viewport.\n * @param {Object} [options] Options supports all properties from {@link AnimationOptions} and {@link CameraOptions} in addition to the fields below.\n * @param {number | PaddingOptions} [options.padding] The amount of padding in pixels to add to the given bounds.\n * @param {boolean} [options.linear=false] If `true`, the map transitions using\n * {@link Map#easeTo}. If `false`, the map transitions using {@link Map#flyTo}. See\n * those functions and {@link AnimationOptions} for information about options available.\n * @param {Function} [options.easing] An easing function for the animated transition. See {@link AnimationOptions}.\n * @param {PointLike} [options.offset=[0, 0]] The center of the given bounds relative to the map's center, measured in pixels.\n * @param {number} [options.maxZoom] The maximum zoom level to allow when the map view transitions to the specified bounds.\n * @param {Object} [eventData] Additional properties to be added to event objects of events triggered by this method.\n * @fires movestart\n * @fires moveend\n * @returns {Map} `this`\n\t * @example\n * var bbox = [[-79, 43], [-73, 45]];\n * map.fitBounds(bbox, {\n * padding: {top: 10, bottom:25, left: 15, right: 5}\n * });\n * @see [Fit a map to a bounding box](https://www.mapbox.com/mapbox-gl-js/example/fitbounds/)\n */\n fitBounds(bounds: LngLatBoundsLike, options?: AnimationOptions & CameraOptions, eventData?: Object) {\n return this._fitInternal(\n this.cameraForBounds(bounds, options),\n options,\n eventData);\n }\n\n /**\n * Pans, rotates and zooms the map to to fit the box made by points p0 and p1\n * once the map is rotated to the specified bearing. To zoom without rotating,\n * pass in the current map bearing.\n *\n * @memberof Map#\n * @param p0 First point on screen, in pixel coordinates\n * @param p1 Second point on screen, in pixel coordinates\n * @param bearing Desired map bearing at end of animation, in degrees\n * @param options Options object\n * @param {number | PaddingOptions} [options.padding] The amount of padding in pixels to add to the given bounds.\n * @param {boolean} [options.linear=false] If `true`, the map transitions using\n * {@link Map#easeTo}. If `false`, the map transitions using {@link Map#flyTo}. See\n * those functions and {@link AnimationOptions} for information about options available.\n * @param {Function} [options.easing] An easing function for the animated transition. See {@link AnimationOptions}.\n * @param {PointLike} [options.offset=[0, 0]] The center of the given bounds relative to the map's center, measured in pixels.\n * @param {number} [options.maxZoom] The maximum zoom level to allow when the map view transitions to the specified bounds.\n * @param eventData Additional properties to be added to event objects of events triggered by this method.\n * @fires movestart\n * @fires moveend\n * @returns {Map} `this`\n\t * @example\n * var p0 = [220, 400];\n * var p1 = [500, 900];\n * map.fitScreenCoordinates(p0, p1, map.getBearing(), {\n * padding: {top: 10, bottom:25, left: 15, right: 5}\n * });\n * @see Used by {@link BoxZoomHandler}\n */\n fitScreenCoordinates(p0: PointLike, p1: PointLike, bearing: number, options?: AnimationOptions & CameraOptions, eventData?: Object) {\n return this._fitInternal(\n this._cameraForBoxAndBearing(\n this.transform.pointLocation(Point.convert(p0)),\n this.transform.pointLocation(Point.convert(p1)),\n bearing,\n options),\n options,\n eventData);\n }\n\n _fitInternal(calculatedOptions?: CameraOptions & AnimationOptions, options?: AnimationOptions & CameraOptions, eventData?: Object) {\n // cameraForBounds warns + returns undefined if unable to fit:\n if (!calculatedOptions) return this;\n\n options = extend(calculatedOptions, options);\n // Explictly remove the padding field because, calculatedOptions already accounts for padding by setting zoom and center accordingly.\n delete options.padding;\n\n return options.linear ?\n this.easeTo(options, eventData) :\n this.flyTo(options, eventData);\n }\n\n /**\n * Changes any combination of center, zoom, bearing, and pitch, without\n * an animated transition. The map will retain its current values for any\n * details not specified in `options`.\n *\n * @memberof Map#\n * @param options Options object\n * @param eventData Additional properties to be added to event objects of events triggered by this method.\n * @fires movestart\n * @fires zoomstart\n * @fires pitchstart\n * @fires rotate\n * @fires move\n * @fires zoom\n * @fires pitch\n * @fires moveend\n * @fires zoomend\n * @fires pitchend\n * @returns {Map} `this`\n * @example\n * // jump to coordinates at current zoom\n * map.jumpTo({center: [0, 0]});\n * // jump with zoom, pitch, and bearing options\n * map.jumpTo({\n * center: [0, 0],\n * zoom: 8,\n * pitch: 45,\n * bearing: 90\n * });\n * @see [Jump to a series of locations](https://docs.mapbox.com/mapbox-gl-js/example/jump-to/)\n * @see [Update a feature in realtime](https://docs.mapbox.com/mapbox-gl-js/example/live-update-feature/)\n */\n jumpTo(options: CameraOptions, eventData?: Object) {\n this.stop();\n\n const tr = this.transform;\n let zoomChanged = false,\n bearingChanged = false,\n pitchChanged = false;\n\n if ('zoom' in options && tr.zoom !== +options.zoom) {\n zoomChanged = true;\n tr.zoom = +options.zoom;\n }\n\n if (options.center !== undefined) {\n tr.center = LngLat.convert(options.center);\n }\n\n if ('bearing' in options && tr.bearing !== +options.bearing) {\n bearingChanged = true;\n tr.bearing = +options.bearing;\n }\n\n if ('pitch' in options && tr.pitch !== +options.pitch) {\n pitchChanged = true;\n tr.pitch = +options.pitch;\n }\n\n if (options.padding != null && !tr.isPaddingEqual(options.padding)) {\n tr.padding = options.padding;\n }\n\n this.fire(new Event('movestart', eventData))\n .fire(new Event('move', eventData));\n\n if (zoomChanged) {\n this.fire(new Event('zoomstart', eventData))\n .fire(new Event('zoom', eventData))\n .fire(new Event('zoomend', eventData));\n }\n\n if (bearingChanged) {\n this.fire(new Event('rotatestart', eventData))\n .fire(new Event('rotate', eventData))\n .fire(new Event('rotateend', eventData));\n }\n\n if (pitchChanged) {\n this.fire(new Event('pitchstart', eventData))\n .fire(new Event('pitch', eventData))\n .fire(new Event('pitchend', eventData));\n }\n\n return this.fire(new Event('moveend', eventData));\n }\n\n /**\n * Changes any combination of `center`, `zoom`, `bearing`, `pitch`, and `padding` with an animated transition\n * between old and new values. The map will retain its current values for any\n * details not specified in `options`.\n *\n * Note: The transition will happen instantly if the user has enabled\n * the `reduced motion` accesibility feature enabled in their operating system,\n * unless `options` includes `essential: true`.\n *\n * @memberof Map#\n * @param options Options describing the destination and animation of the transition.\n * Accepts {@link CameraOptions} and {@link AnimationOptions}.\n * @param eventData Additional properties to be added to event objects of events triggered by this method.\n * @fires movestart\n * @fires zoomstart\n * @fires pitchstart\n * @fires rotate\n * @fires move\n * @fires zoom\n * @fires pitch\n * @fires moveend\n * @fires zoomend\n * @fires pitchend\n * @returns {Map} `this`\n * @see [Navigate the map with game-like controls](https://www.mapbox.com/mapbox-gl-js/example/game-controls/)\n */\n easeTo(options: CameraOptions & AnimationOptions & {easeId?: string}, eventData?: Object) {\n this._stop(false, options.easeId);\n\n options = extend({\n offset: [0, 0],\n duration: 500,\n easing: defaultEasing\n }, options);\n\n if (options.animate === false || (!options.essential && browser.prefersReducedMotion)) options.duration = 0;\n\n const tr = this.transform,\n startZoom = this.getZoom(),\n startBearing = this.getBearing(),\n startPitch = this.getPitch(),\n startPadding = this.getPadding(),\n\n zoom = 'zoom' in options ? +options.zoom : startZoom,\n bearing = 'bearing' in options ? this._normalizeBearing(options.bearing, startBearing) : startBearing,\n pitch = 'pitch' in options ? +options.pitch : startPitch,\n padding = 'padding' in options ? options.padding : tr.padding;\n\n const offsetAsPoint = Point.convert(options.offset);\n let pointAtOffset = tr.centerPoint.add(offsetAsPoint);\n const locationAtOffset = tr.pointLocation(pointAtOffset);\n const center = LngLat.convert(options.center || locationAtOffset);\n this._normalizeCenter(center);\n\n const from = tr.project(locationAtOffset);\n const delta = tr.project(center).sub(from);\n const finalScale = tr.zoomScale(zoom - startZoom);\n\n let around, aroundPoint;\n\n if (options.around) {\n around = LngLat.convert(options.around);\n aroundPoint = tr.locationPoint(around);\n }\n\n const currently = {\n moving: this._moving,\n zooming: this._zooming,\n rotating: this._rotating,\n pitching: this._pitching\n };\n\n this._zooming = this._zooming || (zoom !== startZoom);\n this._rotating = this._rotating || (startBearing !== bearing);\n this._pitching = this._pitching || (pitch !== startPitch);\n this._padding = !tr.isPaddingEqual(padding);\n\n this._easeId = options.easeId;\n this._prepareEase(eventData, options.noMoveStart, currently);\n\n this._ease((k) => {\n if (this._zooming) {\n tr.zoom = interpolate(startZoom, zoom, k);\n }\n if (this._rotating) {\n tr.bearing = interpolate(startBearing, bearing, k);\n }\n if (this._pitching) {\n tr.pitch = interpolate(startPitch, pitch, k);\n }\n if (this._padding) {\n tr.interpolatePadding(startPadding, padding, k);\n // When padding is being applied, Transform#centerPoint is changing continously,\n // thus we need to recalculate offsetPoint every fra,e\n pointAtOffset = tr.centerPoint.add(offsetAsPoint);\n }\n\n if (around) {\n tr.setLocationAtPoint(around, aroundPoint);\n } else {\n const scale = tr.zoomScale(tr.zoom - startZoom);\n const base = zoom > startZoom ?\n Math.min(2, finalScale) :\n Math.max(0.5, finalScale);\n const speedup = Math.pow(base, 1 - k);\n const newCenter = tr.unproject(from.add(delta.mult(k * speedup)).mult(scale));\n tr.setLocationAtPoint(tr.renderWorldCopies ? newCenter.wrap() : newCenter, pointAtOffset);\n }\n\n this._fireMoveEvents(eventData);\n\n }, (interruptingEaseId?: string) => {\n this._afterEase(eventData, interruptingEaseId);\n }, options);\n\n return this;\n }\n\n _prepareEase(eventData?: Object, noMoveStart: boolean, currently: Object = {}) {\n this._moving = true;\n\n if (!noMoveStart && !currently.moving) {\n this.fire(new Event('movestart', eventData));\n }\n if (this._zooming && !currently.zooming) {\n this.fire(new Event('zoomstart', eventData));\n }\n if (this._rotating && !currently.rotating) {\n this.fire(new Event('rotatestart', eventData));\n }\n if (this._pitching && !currently.pitching) {\n this.fire(new Event('pitchstart', eventData));\n }\n }\n\n _fireMoveEvents(eventData?: Object) {\n this.fire(new Event('move', eventData));\n if (this._zooming) {\n this.fire(new Event('zoom', eventData));\n }\n if (this._rotating) {\n this.fire(new Event('rotate', eventData));\n }\n if (this._pitching) {\n this.fire(new Event('pitch', eventData));\n }\n }\n\n _afterEase(eventData?: Object, easeId?: string) {\n // if this easing is being stopped to start another easing with\n // the same id then don't fire any events to avoid extra start/stop events\n if (this._easeId && easeId && this._easeId === easeId) {\n return;\n }\n delete this._easeId;\n\n const wasZooming = this._zooming;\n const wasRotating = this._rotating;\n const wasPitching = this._pitching;\n this._moving = false;\n this._zooming = false;\n this._rotating = false;\n this._pitching = false;\n this._padding = false;\n\n if (wasZooming) {\n this.fire(new Event('zoomend', eventData));\n }\n if (wasRotating) {\n this.fire(new Event('rotateend', eventData));\n }\n if (wasPitching) {\n this.fire(new Event('pitchend', eventData));\n }\n this.fire(new Event('moveend', eventData));\n }\n\n /**\n * Changes any combination of center, zoom, bearing, and pitch, animating the transition along a curve that\n * evokes flight. The animation seamlessly incorporates zooming and panning to help\n * the user maintain her bearings even after traversing a great distance.\n *\n * Note: The animation will be skipped, and this will behave equivalently to `jumpTo`\n * if the user has the `reduced motion` accesibility feature enabled in their operating system,\n * unless 'options' includes `essential: true`.\n *\n * @memberof Map#\n * @param {Object} options Options describing the destination and animation of the transition.\n * Accepts {@link CameraOptions}, {@link AnimationOptions},\n * and the following additional options.\n * @param {number} [options.curve=1.42] The zooming \"curve\" that will occur along the\n * flight path. A high value maximizes zooming for an exaggerated animation, while a low\n * value minimizes zooming for an effect closer to {@link Map#easeTo}. 1.42 is the average\n * value selected by participants in the user study discussed in\n * [van Wijk (2003)](https://www.win.tue.nl/~vanwijk/zoompan.pdf). A value of\n * `Math.pow(6, 0.25)` would be equivalent to the root mean squared average velocity. A\n * value of 1 would produce a circular motion.\n * @param {number} [options.minZoom] The zero-based zoom level at the peak of the flight path. If\n * `options.curve` is specified, this option is ignored.\n * @param {number} [options.speed=1.2] The average speed of the animation defined in relation to\n * `options.curve`. A speed of 1.2 means that the map appears to move along the flight path\n * by 1.2 times `options.curve` screenfuls every second. A _screenful_ is the map's visible span.\n * It does not correspond to a fixed physical distance, but varies by zoom level.\n * @param {number} [options.screenSpeed] The average speed of the animation measured in screenfuls\n * per second, assuming a linear timing curve. If `options.speed` is specified, this option is ignored.\n * @param {number} [options.maxDuration] The animation's maximum duration, measured in milliseconds.\n * If duration exceeds maximum duration, it resets to 0.\n * @param eventData Additional properties to be added to event objects of events triggered by this method.\n * @fires movestart\n * @fires zoomstart\n * @fires pitchstart\n * @fires move\n * @fires zoom\n * @fires rotate\n * @fires pitch\n * @fires moveend\n * @fires zoomend\n * @fires pitchend\n * @returns {Map} `this`\n * @example\n * // fly with default options to null island\n * map.flyTo({center: [0, 0], zoom: 9});\n * // using flyTo options\n * map.flyTo({\n * center: [0, 0],\n * zoom: 9,\n * speed: 0.2,\n * curve: 1,\n * easing(t) {\n * return t;\n * }\n * });\n * @see [Fly to a location](https://www.mapbox.com/mapbox-gl-js/example/flyto/)\n * @see [Slowly fly to a location](https://www.mapbox.com/mapbox-gl-js/example/flyto-options/)\n * @see [Fly to a location based on scroll position](https://www.mapbox.com/mapbox-gl-js/example/scroll-fly-to/)\n */\n flyTo(options: Object, eventData?: Object) {\n // Fall through to jumpTo if user has set prefers-reduced-motion\n if (!options.essential && browser.prefersReducedMotion) {\n const coercedOptions = (pick(options, ['center', 'zoom', 'bearing', 'pitch', 'around']): CameraOptions);\n return this.jumpTo(coercedOptions, eventData);\n }\n\n // This method implements an “optimal path” animation, as detailed in:\n //\n // Van Wijk, Jarke J.; Nuij, Wim A. A. “Smooth and efficient zooming and panning.” INFOVIS\n // ’03. pp. 15–22. .\n //\n // Where applicable, local variable documentation begins with the associated variable or\n // function in van Wijk (2003).\n\n this.stop();\n\n options = extend({\n offset: [0, 0],\n speed: 1.2,\n curve: 1.42,\n easing: defaultEasing\n }, options);\n\n const tr = this.transform,\n startZoom = this.getZoom(),\n startBearing = this.getBearing(),\n startPitch = this.getPitch(),\n startPadding = this.getPadding();\n\n const zoom = 'zoom' in options ? clamp(+options.zoom, tr.minZoom, tr.maxZoom) : startZoom;\n const bearing = 'bearing' in options ? this._normalizeBearing(options.bearing, startBearing) : startBearing;\n const pitch = 'pitch' in options ? +options.pitch : startPitch;\n const padding = 'padding' in options ? options.padding : tr.padding;\n\n const scale = tr.zoomScale(zoom - startZoom);\n const offsetAsPoint = Point.convert(options.offset);\n let pointAtOffset = tr.centerPoint.add(offsetAsPoint);\n const locationAtOffset = tr.pointLocation(pointAtOffset);\n const center = LngLat.convert(options.center || locationAtOffset);\n this._normalizeCenter(center);\n\n const from = tr.project(locationAtOffset);\n const delta = tr.project(center).sub(from);\n\n let rho = options.curve;\n\n // w₀: Initial visible span, measured in pixels at the initial scale.\n const w0 = Math.max(tr.width, tr.height),\n // w₁: Final visible span, measured in pixels with respect to the initial scale.\n w1 = w0 / scale,\n // Length of the flight path as projected onto the ground plane, measured in pixels from\n // the world image origin at the initial scale.\n u1 = delta.mag();\n\n if ('minZoom' in options) {\n const minZoom = clamp(Math.min(options.minZoom, startZoom, zoom), tr.minZoom, tr.maxZoom);\n // wm: Maximum visible span, measured in pixels with respect to the initial\n // scale.\n const wMax = w0 / tr.zoomScale(minZoom - startZoom);\n rho = Math.sqrt(wMax / u1 * 2);\n }\n\n // ρ²\n const rho2 = rho * rho;\n\n /**\n * rᵢ: Returns the zoom-out factor at one end of the animation.\n *\n * @param i 0 for the ascent or 1 for the descent.\n * @private\n */\n function r(i) {\n const b = (w1 * w1 - w0 * w0 + (i ? -1 : 1) * rho2 * rho2 * u1 * u1) / (2 * (i ? w1 : w0) * rho2 * u1);\n return Math.log(Math.sqrt(b * b + 1) - b);\n }\n\n function sinh(n) { return (Math.exp(n) - Math.exp(-n)) / 2; }\n function cosh(n) { return (Math.exp(n) + Math.exp(-n)) / 2; }\n function tanh(n) { return sinh(n) / cosh(n); }\n\n // r₀: Zoom-out factor during ascent.\n const r0 = r(0);\n\n // w(s): Returns the visible span on the ground, measured in pixels with respect to the\n // initial scale. Assumes an angular field of view of 2 arctan ½ ≈ 53°.\n let w: (_: number) => number = function (s) {\n return (cosh(r0) / cosh(r0 + rho * s));\n };\n\n // u(s): Returns the distance along the flight path as projected onto the ground plane,\n // measured in pixels from the world image origin at the initial scale.\n let u: (_: number) => number = function (s) {\n return w0 * ((cosh(r0) * tanh(r0 + rho * s) - sinh(r0)) / rho2) / u1;\n };\n\n // S: Total length of the flight path, measured in ρ-screenfuls.\n let S = (r(1) - r0) / rho;\n\n // When u₀ = u₁, the optimal path doesn’t require both ascent and descent.\n if (Math.abs(u1) < 0.000001 || !isFinite(S)) {\n // Perform a more or less instantaneous transition if the path is too short.\n if (Math.abs(w0 - w1) < 0.000001) return this.easeTo(options, eventData);\n\n const k = w1 < w0 ? -1 : 1;\n S = Math.abs(Math.log(w1 / w0)) / rho;\n\n u = function() { return 0; };\n w = function(s) { return Math.exp(k * rho * s); };\n }\n\n if ('duration' in options) {\n options.duration = +options.duration;\n } else {\n const V = 'screenSpeed' in options ? +options.screenSpeed / rho : +options.speed;\n options.duration = 1000 * S / V;\n }\n\n if (options.maxDuration && options.duration > options.maxDuration) {\n options.duration = 0;\n }\n\n this._zooming = true;\n this._rotating = (startBearing !== bearing);\n this._pitching = (pitch !== startPitch);\n this._padding = !tr.isPaddingEqual(padding);\n\n this._prepareEase(eventData, false);\n\n this._ease((k) => {\n // s: The distance traveled along the flight path, measured in ρ-screenfuls.\n const s = k * S;\n const scale = 1 / w(s);\n tr.zoom = k === 1 ? zoom : startZoom + tr.scaleZoom(scale);\n\n if (this._rotating) {\n tr.bearing = interpolate(startBearing, bearing, k);\n }\n if (this._pitching) {\n tr.pitch = interpolate(startPitch, pitch, k);\n }\n if (this._padding) {\n tr.interpolatePadding(startPadding, padding, k);\n // When padding is being applied, Transform#centerPoint is changing continously,\n // thus we need to recalculate offsetPoint every frame\n pointAtOffset = tr.centerPoint.add(offsetAsPoint);\n }\n\n const newCenter = k === 1 ? center : tr.unproject(from.add(delta.mult(u(s))).mult(scale));\n tr.setLocationAtPoint(tr.renderWorldCopies ? newCenter.wrap() : newCenter, pointAtOffset);\n\n this._fireMoveEvents(eventData);\n\n }, () => this._afterEase(eventData), options);\n\n return this;\n }\n\n isEasing() {\n return !!this._easeFrameId;\n }\n\n /**\n * Stops any animated transition underway.\n *\n * @memberof Map#\n * @returns {Map} `this`\n */\n stop(): this {\n return this._stop();\n }\n\n _stop(allowGestures?: boolean, easeId?: string): this {\n if (this._easeFrameId) {\n this._cancelRenderFrame(this._easeFrameId);\n delete this._easeFrameId;\n delete this._onEaseFrame;\n }\n\n if (this._onEaseEnd) {\n // The _onEaseEnd function might emit events which trigger new\n // animation, which sets a new _onEaseEnd. Ensure we don't delete\n // it unintentionally.\n const onEaseEnd = this._onEaseEnd;\n delete this._onEaseEnd;\n onEaseEnd.call(this, easeId);\n }\n if (!allowGestures) {\n const handlers = (this: any).handlers;\n if (handlers) handlers.stop(false);\n }\n return this;\n }\n\n _ease(frame: (_: number) => void,\n finish: () => void,\n options: {animate: boolean, duration: number, easing: (_: number) => number}) {\n if (options.animate === false || options.duration === 0) {\n frame(1);\n finish();\n } else {\n this._easeStart = browser.now();\n this._easeOptions = options;\n this._onEaseFrame = frame;\n this._onEaseEnd = finish;\n this._easeFrameId = this._requestRenderFrame(this._renderFrameCallback);\n }\n }\n\n // Callback for map._requestRenderFrame\n _renderFrameCallback() {\n const t = Math.min((browser.now() - this._easeStart) / this._easeOptions.duration, 1);\n this._onEaseFrame(this._easeOptions.easing(t));\n if (t < 1) {\n this._easeFrameId = this._requestRenderFrame(this._renderFrameCallback);\n } else {\n this.stop();\n }\n }\n\n // convert bearing so that it's numerically close to the current one so that it interpolates properly\n _normalizeBearing(bearing: number, currentBearing: number) {\n bearing = wrap(bearing, -180, 180);\n const diff = Math.abs(bearing - currentBearing);\n if (Math.abs(bearing - 360 - currentBearing) < diff) bearing -= 360;\n if (Math.abs(bearing + 360 - currentBearing) < diff) bearing += 360;\n return bearing;\n }\n\n // If a path crossing the antimeridian would be shorter, extend the final coordinate so that\n // interpolating between the two endpoints will cross it.\n _normalizeCenter(center: LngLat) {\n const tr = this.transform;\n if (!tr.renderWorldCopies || tr.lngRange) return;\n\n const delta = center.lng - tr.center.lng;\n center.lng +=\n delta > 180 ? -360 :\n delta < -180 ? 360 : 0;\n }\n}\n\n// In debug builds, check that camera change events are fired in the correct order.\n// - ___start events needs to be fired before ___ and ___end events\n// - another ___start event can't be fired before a ___end event has been fired for the previous one\nfunction addAssertions(camera: Camera) { //eslint-disable-line\n Debug.run(() => {\n const inProgress = {};\n\n ['drag', 'zoom', 'rotate', 'pitch', 'move'].forEach(name => {\n inProgress[name] = false;\n\n camera.on(`${name}start`, () => {\n assert(!inProgress[name], `\"${name}start\" fired twice without a \"${name}end\"`);\n inProgress[name] = true;\n assert(inProgress.move);\n });\n\n camera.on(name, () => {\n assert(inProgress[name]);\n assert(inProgress.move);\n });\n\n camera.on(`${name}end`, () => {\n assert(inProgress.move);\n assert(inProgress[name]);\n inProgress[name] = false;\n });\n });\n\n // Canary used to test whether this function is stripped in prod build\n canary = 'canary debug run';\n });\n}\n\nlet canary; //eslint-disable-line\n\nexport default Camera;\n", "// @flow\n\nimport DOM from '../../util/dom';\nimport {bindAll} from '../../util/util';\nimport config from '../../util/config';\n\nimport type Map from '../map';\n\ntype Options = {\n compact?: boolean,\n customAttribution?: string | Array\n};\n\n/**\n * An `AttributionControl` control presents the map's [attribution information](https://docs.mapbox.com/help/how-mapbox-works/attribution/).\n *\n * @implements {IControl}\n * @param {Object} [options]\n * @param {boolean} [options.compact] If `true`, force a compact attribution that shows the full attribution on mouse hover. If `false`, force the full attribution control. The default is a responsive attribution that collapses when the map is less than 640 pixels wide. **Attribution should not be collapsed if it can comfortably fit on the map. `compact` should only be used to modify default attribution when map size makes it impossible to fit [default attribution](https://docs.mapbox.com/help/how-mapbox-works/attribution/) and when the automatic compact resizing for default settings are not sufficient.**\n * @param {string | Array} [options.customAttribution] String or strings to show in addition to any other attributions.\n * @example\n * var map = new mapboxgl.Map({attributionControl: false})\n * .addControl(new mapboxgl.AttributionControl({\n * compact: true\n * }));\n */\nclass AttributionControl {\n options: Options;\n _map: Map;\n _container: HTMLElement;\n _innerContainer: HTMLElement;\n _compactButton: HTMLButtonElement;\n _editLink: ?HTMLAnchorElement;\n _attribHTML: string;\n styleId: string;\n styleOwner: string;\n\n constructor(options: Options = {}) {\n this.options = options;\n\n bindAll([\n '_toggleAttribution',\n '_updateEditLink',\n '_updateData',\n '_updateCompact'\n ], this);\n }\n\n getDefaultPosition() {\n return 'bottom-right';\n }\n\n onAdd(map: Map) {\n const compact = this.options && this.options.compact;\n\n this._map = map;\n this._container = DOM.create('div', 'mapboxgl-ctrl mapboxgl-ctrl-attrib');\n this._compactButton = DOM.create('button', 'mapboxgl-ctrl-attrib-button', this._container);\n this._compactButton.addEventListener('click', this._toggleAttribution);\n this._setElementTitle(this._compactButton, 'ToggleAttribution');\n this._innerContainer = DOM.create('div', 'mapboxgl-ctrl-attrib-inner', this._container);\n this._innerContainer.setAttribute('role', 'list');\n\n if (compact) {\n this._container.classList.add('mapboxgl-compact');\n }\n\n this._updateAttributions();\n this._updateEditLink();\n\n this._map.on('styledata', this._updateData);\n this._map.on('sourcedata', this._updateData);\n this._map.on('moveend', this._updateEditLink);\n\n if (compact === undefined) {\n this._map.on('resize', this._updateCompact);\n this._updateCompact();\n }\n\n return this._container;\n }\n\n onRemove() {\n DOM.remove(this._container);\n\n this._map.off('styledata', this._updateData);\n this._map.off('sourcedata', this._updateData);\n this._map.off('moveend', this._updateEditLink);\n this._map.off('resize', this._updateCompact);\n\n this._map = (undefined: any);\n this._attribHTML = (undefined: any);\n }\n\n _setElementTitle(element: HTMLElement, title: string) {\n const str = this._map._getUIString(`AttributionControl.${title}`);\n element.title = str;\n element.setAttribute('aria-label', str);\n }\n\n _toggleAttribution() {\n if (this._container.classList.contains('mapboxgl-compact-show')) {\n this._container.classList.remove('mapboxgl-compact-show');\n this._compactButton.setAttribute('aria-pressed', 'false');\n } else {\n this._container.classList.add('mapboxgl-compact-show');\n this._compactButton.setAttribute('aria-pressed', 'true');\n }\n }\n\n _updateEditLink() {\n let editLink = this._editLink;\n if (!editLink) {\n editLink = this._editLink = (this._container.querySelector('.mapbox-improve-map'): any);\n }\n\n const params = [\n {key: 'owner', value: this.styleOwner},\n {key: 'id', value: this.styleId},\n {key: 'access_token', value: this._map._requestManager._customAccessToken || config.ACCESS_TOKEN}\n ];\n\n if (editLink) {\n const paramString = params.reduce((acc, next, i) => {\n if (next.value) {\n acc += `${next.key}=${next.value}${i < params.length - 1 ? '&' : ''}`;\n }\n return acc;\n }, `?`);\n editLink.href = `${config.FEEDBACK_URL}/${paramString}${this._map._hash ? this._map._hash.getHashString(true) : ''}`;\n editLink.rel = 'noopener nofollow';\n this._setElementTitle(editLink, 'MapFeedback');\n }\n }\n\n _updateData(e: any) {\n if (e && (e.sourceDataType === 'metadata' || e.sourceDataType === 'visibility' || e.dataType === 'style')) {\n this._updateAttributions();\n this._updateEditLink();\n }\n }\n\n _updateAttributions() {\n if (!this._map.style) return;\n let attributions: Array = [];\n if (this.options.customAttribution) {\n if (Array.isArray(this.options.customAttribution)) {\n attributions = attributions.concat(\n this.options.customAttribution.map(attribution => {\n if (typeof attribution !== 'string') return '';\n return attribution;\n })\n );\n } else if (typeof this.options.customAttribution === 'string') {\n attributions.push(this.options.customAttribution);\n }\n }\n\n if (this._map.style.stylesheet) {\n const stylesheet: any = this._map.style.stylesheet;\n this.styleOwner = stylesheet.owner;\n this.styleId = stylesheet.id;\n }\n\n const sourceCaches = this._map.style.sourceCaches;\n for (const id in sourceCaches) {\n const sourceCache = sourceCaches[id];\n if (sourceCache.used) {\n const source = sourceCache.getSource();\n if (source.attribution && attributions.indexOf(source.attribution) < 0) {\n attributions.push(source.attribution);\n }\n }\n }\n\n // remove any entries that are substrings of another entry.\n // first sort by length so that substrings come first\n attributions.sort((a, b) => a.length - b.length);\n attributions = attributions.filter((attrib, i) => {\n for (let j = i + 1; j < attributions.length; j++) {\n if (attributions[j].indexOf(attrib) >= 0) { return false; }\n }\n return true;\n });\n\n // check if attribution string is different to minimize DOM changes\n const attribHTML = attributions.join(' | ');\n if (attribHTML === this._attribHTML) return;\n\n this._attribHTML = attribHTML;\n\n if (attributions.length) {\n this._innerContainer.innerHTML = attribHTML;\n this._container.classList.remove('mapboxgl-attrib-empty');\n } else {\n this._container.classList.add('mapboxgl-attrib-empty');\n }\n // remove old DOM node from _editLink\n this._editLink = null;\n }\n\n _updateCompact() {\n if (this._map.getCanvasContainer().offsetWidth <= 640) {\n this._container.classList.add('mapboxgl-compact');\n } else {\n this._container.classList.remove('mapboxgl-compact', 'mapboxgl-compact-show');\n }\n }\n\n}\n\nexport default AttributionControl;\n", "// @flow\n\nimport DOM from '../../util/dom';\n\nimport {bindAll} from '../../util/util';\n\nimport type Map from '../map';\n\n/**\n * A `LogoControl` is a control that adds the Mapbox watermark\n * to the map as required by the [terms of service](https://www.mapbox.com/tos/) for Mapbox\n * vector tiles and core styles.\n *\n * @implements {IControl}\n * @private\n**/\n\nclass LogoControl {\n _map: Map;\n _container: HTMLElement;\n\n constructor() {\n bindAll(['_updateLogo'], this);\n bindAll(['_updateCompact'], this);\n }\n\n onAdd(map: Map) {\n this._map = map;\n this._container = DOM.create('div', 'mapboxgl-ctrl');\n const anchor = DOM.create('a', 'mapboxgl-ctrl-logo');\n anchor.target = \"_blank\";\n anchor.rel = \"noopener nofollow\";\n anchor.href = \"https://www.mapbox.com/\";\n anchor.setAttribute(\"aria-label\", this._map._getUIString('LogoControl.Title'));\n anchor.setAttribute(\"rel\", \"noopener nofollow\");\n this._container.appendChild(anchor);\n this._container.style.display = 'none';\n\n this._map.on('sourcedata', this._updateLogo);\n this._updateLogo();\n\n this._map.on('resize', this._updateCompact);\n this._updateCompact();\n\n return this._container;\n }\n\n onRemove() {\n DOM.remove(this._container);\n this._map.off('sourcedata', this._updateLogo);\n this._map.off('resize', this._updateCompact);\n }\n\n getDefaultPosition() {\n return 'bottom-left';\n }\n\n _updateLogo(e: any) {\n if (!e || e.sourceDataType === 'metadata') {\n this._container.style.display = this._logoRequired() ? 'block' : 'none';\n }\n }\n\n _logoRequired() {\n if (!this._map.style) return;\n\n const sourceCaches = this._map.style.sourceCaches;\n for (const id in sourceCaches) {\n const source = sourceCaches[id].getSource();\n if (source.mapbox_logo) {\n return true;\n }\n }\n\n return false;\n }\n\n _updateCompact() {\n const containerChildren = this._container.children;\n if (containerChildren.length) {\n const anchor = containerChildren[0];\n if (this._map.getCanvasContainer().offsetWidth < 250) {\n anchor.classList.add('mapboxgl-compact');\n } else {\n anchor.classList.remove('mapboxgl-compact');\n }\n }\n }\n\n}\n\nexport default LogoControl;\n", "// @flow strict\nimport assert from 'assert';\n\nexport type TaskID = number; // can't mark opaque due to https://github.com/flowtype/flow-remove-types/pull/61\ntype Task = {\n callback: (timeStamp: number) => void;\n id: TaskID;\n cancelled: boolean;\n};\n\nclass TaskQueue {\n _queue: Array;\n _id: TaskID;\n _cleared: boolean;\n _currentlyRunning: Array | false;\n\n constructor() {\n this._queue = [];\n this._id = 0;\n this._cleared = false;\n this._currentlyRunning = false;\n }\n\n add(callback: (timeStamp: number) => void): TaskID {\n const id = ++this._id;\n const queue = this._queue;\n queue.push({callback, id, cancelled: false});\n return id;\n }\n\n remove(id: TaskID) {\n const running = this._currentlyRunning;\n const queue = running ? this._queue.concat(running) : this._queue;\n for (const task of queue) {\n if (task.id === id) {\n task.cancelled = true;\n return;\n }\n }\n }\n\n run(timeStamp: number = 0) {\n assert(!this._currentlyRunning);\n const queue = this._currentlyRunning = this._queue;\n\n // Tasks queued by callbacks in the current queue should be executed\n // on the next run, not the current run.\n this._queue = [];\n\n for (const task of queue) {\n if (task.cancelled) continue;\n task.callback(timeStamp);\n if (this._cleared) break;\n }\n\n this._cleared = false;\n this._currentlyRunning = false;\n }\n\n clear() {\n if (this._currentlyRunning) {\n this._cleared = true;\n }\n this._queue = [];\n }\n}\n\nexport default TaskQueue;\n", "// @flow\n\nconst defaultLocale = {\n 'AttributionControl.ToggleAttribution': 'Toggle attribution',\n 'AttributionControl.MapFeedback': 'Map feedback',\n 'FullscreenControl.Enter': 'Enter fullscreen',\n 'FullscreenControl.Exit': 'Exit fullscreen',\n 'GeolocateControl.FindMyLocation': 'Find my location',\n 'GeolocateControl.LocationNotAvailable': 'Location not available',\n 'LogoControl.Title': 'Mapbox logo',\n 'NavigationControl.ResetBearing': 'Reset bearing to north',\n 'NavigationControl.ZoomIn': 'Zoom in',\n 'NavigationControl.ZoomOut': 'Zoom out',\n 'ScaleControl.Feet': 'ft',\n 'ScaleControl.Meters': 'm',\n 'ScaleControl.Kilometers': 'km',\n 'ScaleControl.Miles': 'mi',\n 'ScaleControl.NauticalMiles': 'nm'\n\n};\n\nexport default defaultLocale;\n", "// @flow\n\nimport {version} from '../../package.json';\nimport {extend, bindAll, warnOnce, uniqueId} from '../util/util';\nimport browser from '../util/browser';\nimport window from '../util/window';\nconst {HTMLImageElement, HTMLElement, ImageBitmap} = window;\nimport DOM from '../util/dom';\nimport {getImage, getJSON, ResourceType} from '../util/ajax';\nimport {RequestManager} from '../util/mapbox';\nimport Style from '../style/style';\nimport EvaluationParameters from '../style/evaluation_parameters';\nimport Painter from '../render/painter';\nimport Transform from '../geo/transform';\nimport Hash from './hash';\nimport HandlerManager from './handler_manager';\nimport Camera from './camera';\nimport LngLat from '../geo/lng_lat';\nimport LngLatBounds from '../geo/lng_lat_bounds';\nimport Point from '@mapbox/point-geometry';\nimport AttributionControl from './control/attribution_control';\nimport LogoControl from './control/logo_control';\nimport isSupported from '@mapbox/mapbox-gl-supported';\nimport {RGBAImage} from '../util/image';\nimport {Event, ErrorEvent} from '../util/evented';\nimport {MapMouseEvent} from './events';\nimport TaskQueue from '../util/task_queue';\nimport webpSupported from '../util/webp_supported';\nimport {PerformanceMarkers, PerformanceUtils} from '../util/performance';\n\nimport {setCacheLimits} from '../util/tile_request_cache';\n\nimport type {PointLike} from '@mapbox/point-geometry';\nimport type {RequestTransformFunction} from '../util/mapbox';\nimport type {LngLatLike} from '../geo/lng_lat';\nimport type {LngLatBoundsLike} from '../geo/lng_lat_bounds';\nimport type {StyleOptions, StyleSetterOptions} from '../style/style';\nimport type {MapEvent, MapDataEvent} from './events';\nimport type {CustomLayerInterface} from '../style/style_layer/custom_style_layer';\nimport type {StyleImageInterface, StyleImageMetadata} from '../style/style_image';\n\nimport type ScrollZoomHandler from './handler/scroll_zoom';\nimport type BoxZoomHandler from './handler/box_zoom';\nimport type {TouchPitchHandler} from './handler/touch_zoom_rotate';\nimport type DragRotateHandler from './handler/shim/drag_rotate';\nimport type DragPanHandler, {DragPanOptions} from './handler/shim/drag_pan';\nimport type KeyboardHandler from './handler/keyboard';\nimport type DoubleClickZoomHandler from './handler/shim/dblclick_zoom';\nimport type TouchZoomRotateHandler from './handler/shim/touch_zoom_rotate';\nimport defaultLocale from './default_locale';\nimport type {TaskID} from '../util/task_queue';\nimport type {Cancelable} from '../types/cancelable';\nimport type {\n LayerSpecification,\n FilterSpecification,\n StyleSpecification,\n LightSpecification,\n SourceSpecification\n} from '../style-spec/types';\n\ntype ControlPosition = 'top-left' | 'top-right' | 'bottom-left' | 'bottom-right';\n/* eslint-disable no-use-before-define */\ntype IControl = {\n onAdd(map: Map): HTMLElement;\n onRemove(map: Map): void;\n\n +getDefaultPosition?: () => ControlPosition;\n}\n/* eslint-enable no-use-before-define */\n\ntype MapOptions = {\n hash?: boolean | string,\n interactive?: boolean,\n container: HTMLElement | string,\n bearingSnap?: number,\n attributionControl?: boolean,\n customAttribution?: string | Array,\n logoPosition?: ControlPosition,\n failIfMajorPerformanceCaveat?: boolean,\n preserveDrawingBuffer?: boolean,\n antialias?: boolean,\n refreshExpiredTiles?: boolean,\n maxBounds?: LngLatBoundsLike,\n scrollZoom?: boolean,\n minZoom?: ?number,\n maxZoom?: ?number,\n minPitch?: ?number,\n maxPitch?: ?number,\n boxZoom?: boolean,\n dragRotate?: boolean,\n dragPan?: DragPanOptions,\n keyboard?: boolean,\n doubleClickZoom?: boolean,\n touchZoomRotate?: boolean,\n touchPitch?: boolean,\n trackResize?: boolean,\n center?: LngLatLike,\n zoom?: number,\n bearing?: number,\n pitch?: number,\n renderWorldCopies?: boolean,\n maxTileCacheSize?: number,\n transformRequest?: RequestTransformFunction,\n accessToken: string,\n locale?: Object\n};\n\nconst defaultMinZoom = -2;\nconst defaultMaxZoom = 22;\n\n// the default values, but also the valid range\nconst defaultMinPitch = 0;\nconst defaultMaxPitch = 60;\n\nconst defaultOptions = {\n center: [0, 0],\n zoom: 0,\n bearing: 0,\n pitch: 0,\n\n minZoom: defaultMinZoom,\n maxZoom: defaultMaxZoom,\n\n minPitch: defaultMinPitch,\n maxPitch: defaultMaxPitch,\n\n interactive: true,\n scrollZoom: true,\n boxZoom: true,\n dragRotate: true,\n dragPan: true,\n keyboard: true,\n doubleClickZoom: true,\n touchZoomRotate: true,\n touchPitch: true,\n\n bearingSnap: 7,\n clickTolerance: 3,\n pitchWithRotate: true,\n\n hash: false,\n attributionControl: true,\n\n failIfMajorPerformanceCaveat: false,\n preserveDrawingBuffer: false,\n trackResize: true,\n renderWorldCopies: true,\n refreshExpiredTiles: true,\n maxTileCacheSize: null,\n localIdeographFontFamily: 'sans-serif',\n transformRequest: null,\n accessToken: null,\n fadeDuration: 300,\n crossSourceCollisions: true\n};\n\n/**\n * The `Map` object represents the map on your page. It exposes methods\n * and properties that enable you to programmatically change the map,\n * and fires events as users interact with it.\n *\n * You create a `Map` by specifying a `container` and other options.\n * Then Mapbox GL JS initializes the map on the page and returns your `Map`\n * object.\n *\n * @extends Evented\n * @param {Object} options\n * @param {HTMLElement|string} options.container The HTML element in which Mapbox GL JS will render the map, or the element's string `id`. The specified element must have no children.\n * @param {number} [options.minZoom=0] The minimum zoom level of the map (0-24).\n * @param {number} [options.maxZoom=22] The maximum zoom level of the map (0-24).\n * @param {number} [options.minPitch=0] The minimum pitch of the map (0-60).\n * @param {number} [options.maxPitch=60] The maximum pitch of the map (0-60).\n * @param {Object|string} [options.style] The map's Mapbox style. This must be an a JSON object conforming to\n * the schema described in the [Mapbox Style Specification](https://mapbox.com/mapbox-gl-style-spec/), or a URL to\n * such JSON.\n *\n * To load a style from the Mapbox API, you can use a URL of the form `mapbox://styles/:owner/:style`,\n * where `:owner` is your Mapbox account name and `:style` is the style ID. Or you can use one of the following\n * [the predefined Mapbox styles](https://www.mapbox.com/maps/):\n *\n * * `mapbox://styles/mapbox/streets-v11`\n * * `mapbox://styles/mapbox/outdoors-v11`\n * * `mapbox://styles/mapbox/light-v10`\n * * `mapbox://styles/mapbox/dark-v10`\n * * `mapbox://styles/mapbox/satellite-v9`\n * * `mapbox://styles/mapbox/satellite-streets-v11`\n * * `mapbox://styles/mapbox/navigation-preview-day-v4`\n * * `mapbox://styles/mapbox/navigation-preview-night-v4`\n * * `mapbox://styles/mapbox/navigation-guidance-day-v4`\n * * `mapbox://styles/mapbox/navigation-guidance-night-v4`\n *\n * Tilesets hosted with Mapbox can be style-optimized if you append `?optimize=true` to the end of your style URL, like `mapbox://styles/mapbox/streets-v11?optimize=true`.\n * Learn more about style-optimized vector tiles in our [API documentation](https://www.mapbox.com/api-documentation/maps/#retrieve-tiles).\n *\n * @param {(boolean|string)} [options.hash=false] If `true`, the map's position (zoom, center latitude, center longitude, bearing, and pitch) will be synced with the hash fragment of the page's URL.\n * For example, `http://path/to/my/page.html#2.59/39.26/53.07/-24.1/60`.\n * An additional string may optionally be provided to indicate a parameter-styled hash,\n * e.g. http://path/to/my/page.html#map=2.59/39.26/53.07/-24.1/60&foo=bar, where foo\n * is a custom parameter and bar is an arbitrary hash distinct from the map hash.\n * @param {boolean} [options.interactive=true] If `false`, no mouse, touch, or keyboard listeners will be attached to the map, so it will not respond to interaction.\n * @param {number} [options.bearingSnap=7] The threshold, measured in degrees, that determines when the map's\n * bearing will snap to north. For example, with a `bearingSnap` of 7, if the user rotates\n * the map within 7 degrees of north, the map will automatically snap to exact north.\n * @param {boolean} [options.pitchWithRotate=true] If `false`, the map's pitch (tilt) control with \"drag to rotate\" interaction will be disabled.\n * @param {number} [options.clickTolerance=3] The max number of pixels a user can shift the mouse pointer during a click for it to be considered a valid click (as opposed to a mouse drag).\n * @param {boolean} [options.attributionControl=true] If `true`, an {@link AttributionControl} will be added to the map.\n * @param {string | Array} [options.customAttribution] String or strings to show in an {@link AttributionControl}. Only applicable if `options.attributionControl` is `true`.\n * @param {string} [options.logoPosition='bottom-left'] A string representing the position of the Mapbox wordmark on the map. Valid options are `top-left`,`top-right`, `bottom-left`, `bottom-right`.\n * @param {boolean} [options.failIfMajorPerformanceCaveat=false] If `true`, map creation will fail if the performance of Mapbox\n * GL JS would be dramatically worse than expected (i.e. a software renderer would be used).\n * @param {boolean} [options.preserveDrawingBuffer=false] If `true`, the map's canvas can be exported to a PNG using `map.getCanvas().toDataURL()`. This is `false` by default as a performance optimization.\n * @param {boolean} [options.antialias] If `true`, the gl context will be created with MSAA antialiasing, which can be useful for antialiasing custom layers. this is `false` by default as a performance optimization.\n * @param {boolean} [options.refreshExpiredTiles=true] If `false`, the map won't attempt to re-request tiles once they expire per their HTTP `cacheControl`/`expires` headers.\n * @param {LngLatBoundsLike} [options.maxBounds] If set, the map will be constrained to the given bounds.\n * @param {boolean|Object} [options.scrollZoom=true] If `true`, the \"scroll to zoom\" interaction is enabled. An `Object` value is passed as options to {@link ScrollZoomHandler#enable}.\n * @param {boolean} [options.boxZoom=true] If `true`, the \"box zoom\" interaction is enabled (see {@link BoxZoomHandler}).\n * @param {boolean} [options.dragRotate=true] If `true`, the \"drag to rotate\" interaction is enabled (see {@link DragRotateHandler}).\n * @param {boolean|Object} [options.dragPan=true] If `true`, the \"drag to pan\" interaction is enabled. An `Object` value is passed as options to {@link DragPanHandler#enable}.\n * @param {boolean} [options.keyboard=true] If `true`, keyboard shortcuts are enabled (see {@link KeyboardHandler}).\n * @param {boolean} [options.doubleClickZoom=true] If `true`, the \"double click to zoom\" interaction is enabled (see {@link DoubleClickZoomHandler}).\n * @param {boolean|Object} [options.touchZoomRotate=true] If `true`, the \"pinch to rotate and zoom\" interaction is enabled. An `Object` value is passed as options to {@link TouchZoomRotateHandler#enable}.\n * @param {boolean|Object} [options.touchPitch=true] If `true`, the \"drag to pitch\" interaction is enabled. An `Object` value is passed as options to {@link TouchPitchHandler#enable}.\n * @param {boolean} [options.trackResize=true] If `true`, the map will automatically resize when the browser window resizes.\n * @param {LngLatLike} [options.center=[0, 0]] The inital geographical centerpoint of the map. If `center` is not specified in the constructor options, Mapbox GL JS will look for it in the map's style object. If it is not specified in the style, either, it will default to `[0, 0]` Note: Mapbox GL uses longitude, latitude coordinate order (as opposed to latitude, longitude) to match GeoJSON.\n * @param {number} [options.zoom=0] The initial zoom level of the map. If `zoom` is not specified in the constructor options, Mapbox GL JS will look for it in the map's style object. If it is not specified in the style, either, it will default to `0`.\n * @param {number} [options.bearing=0] The initial bearing (rotation) of the map, measured in degrees counter-clockwise from north. If `bearing` is not specified in the constructor options, Mapbox GL JS will look for it in the map's style object. If it is not specified in the style, either, it will default to `0`.\n * @param {number} [options.pitch=0] The initial pitch (tilt) of the map, measured in degrees away from the plane of the screen (0-60). If `pitch` is not specified in the constructor options, Mapbox GL JS will look for it in the map's style object. If it is not specified in the style, either, it will default to `0`.\n * @param {LngLatBoundsLike} [options.bounds] The initial bounds of the map. If `bounds` is specified, it overrides `center` and `zoom` constructor options.\n * @param {Object} [options.fitBoundsOptions] A {@link Map#fitBounds} options object to use _only_ when fitting the initial `bounds` provided above.\n * @param {boolean} [options.renderWorldCopies=true] If `true`, multiple copies of the world will be rendered side by side beyond -180 and 180 degrees longitude. If set to `false`:\n * - When the map is zoomed out far enough that a single representation of the world does not fill the map's entire\n * container, there will be blank space beyond 180 and -180 degrees longitude.\n * - Features that cross 180 and -180 degrees longitude will be cut in two (with one portion on the right edge of the\n * map and the other on the left edge of the map) at every zoom level.\n * @param {number} [options.maxTileCacheSize=null] The maximum number of tiles stored in the tile cache for a given source. If omitted, the cache will be dynamically sized based on the current viewport.\n * @param {string} [options.localIdeographFontFamily='sans-serif'] Defines a CSS\n * font-family for locally overriding generation of glyphs in the 'CJK Unified Ideographs', 'Hiragana', 'Katakana' and 'Hangul Syllables' ranges.\n * In these ranges, font settings from the map's style will be ignored, except for font-weight keywords (light/regular/medium/bold).\n * Set to `false`, to enable font settings from the map's style for these glyph ranges. Note that [Mapbox Studio](https://studio.mapbox.com/) sets this value to `false` by default.\n * The purpose of this option is to avoid bandwidth-intensive glyph server requests. (See [Use locally generated ideographs](https://www.mapbox.com/mapbox-gl-js/example/local-ideographs).)\n * @param {RequestTransformFunction} [options.transformRequest=null] A callback run before the Map makes a request for an external URL. The callback can be used to modify the url, set headers, or set the credentials property for cross-origin requests.\n * Expected to return an object with a `url` property and optionally `headers` and `credentials` properties.\n * @param {boolean} [options.collectResourceTiming=false] If `true`, Resource Timing API information will be collected for requests made by GeoJSON and Vector Tile web workers (this information is normally inaccessible from the main Javascript thread). Information will be returned in a `resourceTiming` property of relevant `data` events.\n * @param {number} [options.fadeDuration=300] Controls the duration of the fade-in/fade-out animation for label collisions, in milliseconds. This setting affects all symbol layers. This setting does not affect the duration of runtime styling transitions or raster tile cross-fading.\n * @param {boolean} [options.crossSourceCollisions=true] If `true`, symbols from multiple sources can collide with each other during collision detection. If `false`, collision detection is run separately for the symbols in each source.\n * @param {string} [options.accessToken=null] If specified, map will use this token instead of the one defined in mapboxgl.accessToken.\n * @param {Object} [options.locale=null] A patch to apply to the default localization table for UI strings, e.g. control tooltips. The `locale` object maps namespaced UI string IDs to translated strings in the target language; see `src/ui/default_locale.js` for an example with all supported string IDs. The object may specify all UI strings (thereby adding support for a new translation) or only a subset of strings (thereby patching the default translation table).\n * @example\n * var map = new mapboxgl.Map({\n * container: 'map',\n * center: [-122.420679, 37.772537],\n * zoom: 13,\n * style: style_object,\n * hash: true,\n * transformRequest: (url, resourceType)=> {\n * if(resourceType === 'Source' && url.startsWith('http://myHost')) {\n * return {\n * url: url.replace('http', 'https'),\n * headers: { 'my-custom-header': true},\n * credentials: 'include' // Include cookies for cross-origin requests\n * }\n * }\n * }\n * });\n * @see [Display a map](https://www.mapbox.com/mapbox-gl-js/examples/)\n */\nclass Map extends Camera {\n style: Style;\n painter: Painter;\n handlers: HandlerManager;\n\n _container: HTMLElement;\n _missingCSSCanary: HTMLElement;\n _canvasContainer: HTMLElement;\n _controlContainer: HTMLElement;\n _controlPositions: {[_: string]: HTMLElement};\n _interactive: ?boolean;\n _showTileBoundaries: ?boolean;\n _showCollisionBoxes: ?boolean;\n _showPadding: ?boolean;\n _showOverdrawInspector: boolean;\n _repaint: ?boolean;\n _vertices: ?boolean;\n _canvas: HTMLCanvasElement;\n _maxTileCacheSize: number;\n _frame: ?Cancelable;\n _styleDirty: ?boolean;\n _sourcesDirty: ?boolean;\n _placementDirty: ?boolean;\n _loaded: boolean;\n // accounts for placement finishing as well\n _fullyLoaded: boolean;\n _trackResize: boolean;\n _preserveDrawingBuffer: boolean;\n _failIfMajorPerformanceCaveat: boolean;\n _antialias: boolean;\n _refreshExpiredTiles: boolean;\n _hash: Hash;\n _delegatedListeners: any;\n _fadeDuration: number;\n _crossSourceCollisions: boolean;\n _crossFadingFactor: number;\n _collectResourceTiming: boolean;\n _renderTaskQueue: TaskQueue;\n _controls: Array;\n _mapId: number;\n _localIdeographFontFamily: string;\n _requestManager: RequestManager;\n _locale: Object;\n _removed: boolean;\n _clickTolerance: number;\n\n /**\n * The map's {@link ScrollZoomHandler}, which implements zooming in and out with a scroll wheel or trackpad.\n * Find more details and examples using `scrollZoom` in the {@link ScrollZoomHandler} section.\n */\n scrollZoom: ScrollZoomHandler;\n\n /**\n * The map's {@link BoxZoomHandler}, which implements zooming using a drag gesture with the Shift key pressed.\n * Find more details and examples using `boxZoom` in the {@link BoxZoomHandler} section.\n */\n boxZoom: BoxZoomHandler;\n\n /**\n * The map's {@link DragRotateHandler}, which implements rotating the map while dragging with the right\n * mouse button or with the Control key pressed. Find more details and examples using `dragRotate`\n * in the {@link DragRotateHandler} section.\n */\n dragRotate: DragRotateHandler;\n\n /**\n * The map's {@link DragPanHandler}, which implements dragging the map with a mouse or touch gesture.\n * Find more details and examples using `dragPan` in the {@link DragPanHandler} section.\n */\n dragPan: DragPanHandler;\n\n /**\n * The map's {@link KeyboardHandler}, which allows the user to zoom, rotate, and pan the map using keyboard\n * shortcuts. Find more details and examples using `keyboard` in the {@link KeyboardHandler} section.\n */\n keyboard: KeyboardHandler;\n\n /**\n * The map's {@link DoubleClickZoomHandler}, which allows the user to zoom by double clicking.\n * Find more details and examples using `doubleClickZoom` in the {@link DoubleClickZoomHandler} section.\n */\n doubleClickZoom: DoubleClickZoomHandler;\n\n /**\n * The map's {@link TouchZoomRotateHandler}, which allows the user to zoom or rotate the map with touch gestures.\n * Find more details and examples using `touchZoomRotate` in the {@link TouchZoomRotateHandler} section.\n */\n touchZoomRotate: TouchZoomRotateHandler;\n\n /**\n * The map's {@link TouchPitchHandler}, which allows the user to pitch the map with touch gestures.\n * Find more details and examples using `touchPitch` in the {@link TouchPitchHandler} section.\n */\n touchPitch: TouchPitchHandler;\n\n constructor(options: MapOptions) {\n PerformanceUtils.mark(PerformanceMarkers.create);\n\n options = extend({}, defaultOptions, options);\n\n if (options.minZoom != null && options.maxZoom != null && options.minZoom > options.maxZoom) {\n throw new Error(`maxZoom must be greater than or equal to minZoom`);\n }\n\n if (options.minPitch != null && options.maxPitch != null && options.minPitch > options.maxPitch) {\n throw new Error(`maxPitch must be greater than or equal to minPitch`);\n }\n\n if (options.minPitch != null && options.minPitch < defaultMinPitch) {\n throw new Error(`minPitch must be greater than or equal to ${defaultMinPitch}`);\n }\n\n if (options.maxPitch != null && options.maxPitch > defaultMaxPitch) {\n throw new Error(`maxPitch must be less than or equal to ${defaultMaxPitch}`);\n }\n\n const transform = new Transform(options.minZoom, options.maxZoom, options.minPitch, options.maxPitch, options.renderWorldCopies);\n super(transform, options);\n\n this._interactive = options.interactive;\n this._maxTileCacheSize = options.maxTileCacheSize;\n this._failIfMajorPerformanceCaveat = options.failIfMajorPerformanceCaveat;\n this._preserveDrawingBuffer = options.preserveDrawingBuffer;\n this._antialias = options.antialias;\n this._trackResize = options.trackResize;\n this._bearingSnap = options.bearingSnap;\n this._refreshExpiredTiles = options.refreshExpiredTiles;\n this._fadeDuration = options.fadeDuration;\n this._crossSourceCollisions = options.crossSourceCollisions;\n this._crossFadingFactor = 1;\n this._collectResourceTiming = options.collectResourceTiming;\n this._renderTaskQueue = new TaskQueue();\n this._controls = [];\n this._mapId = uniqueId();\n this._locale = extend({}, defaultLocale, options.locale);\n this._clickTolerance = options.clickTolerance;\n\n this._requestManager = new RequestManager(options.transformRequest, options.accessToken);\n\n if (typeof options.container === 'string') {\n this._container = window.document.getElementById(options.container);\n if (!this._container) {\n throw new Error(`Container '${options.container}' not found.`);\n }\n } else if (options.container instanceof HTMLElement) {\n this._container = options.container;\n } else {\n throw new Error(`Invalid type: 'container' must be a String or HTMLElement.`);\n }\n\n if (options.maxBounds) {\n this.setMaxBounds(options.maxBounds);\n }\n\n bindAll([\n '_onWindowOnline',\n '_onWindowResize',\n '_onMapScroll',\n '_contextLost',\n '_contextRestored'\n ], this);\n\n this._setupContainer();\n this._setupPainter();\n if (this.painter === undefined) {\n throw new Error(`Failed to initialize WebGL.`);\n }\n\n this.on('move', () => this._update(false));\n this.on('moveend', () => this._update(false));\n this.on('zoom', () => this._update(true));\n\n if (typeof window !== 'undefined') {\n window.addEventListener('online', this._onWindowOnline, false);\n window.addEventListener('resize', this._onWindowResize, false);\n window.addEventListener('orientationchange', this._onWindowResize, false);\n }\n\n this.handlers = new HandlerManager(this, options);\n\n const hashName = (typeof options.hash === 'string' && options.hash) || undefined;\n this._hash = options.hash && (new Hash(hashName)).addTo(this);\n // don't set position from options if set through hash\n if (!this._hash || !this._hash._onHashChange()) {\n this.jumpTo({\n center: options.center,\n zoom: options.zoom,\n bearing: options.bearing,\n pitch: options.pitch\n });\n\n if (options.bounds) {\n this.resize();\n this.fitBounds(options.bounds, extend({}, options.fitBoundsOptions, {duration: 0}));\n }\n }\n\n this.resize();\n\n this._localIdeographFontFamily = options.localIdeographFontFamily;\n if (options.style) this.setStyle(options.style, {localIdeographFontFamily: options.localIdeographFontFamily});\n\n if (options.attributionControl)\n this.addControl(new AttributionControl({customAttribution: options.customAttribution}));\n\n this.addControl(new LogoControl(), options.logoPosition);\n\n this.on('style.load', () => {\n if (this.transform.unmodified) {\n this.jumpTo((this.style.stylesheet: any));\n }\n });\n this.on('data', (event: MapDataEvent) => {\n this._update(event.dataType === 'style');\n this.fire(new Event(`${event.dataType}data`, event));\n });\n this.on('dataloading', (event: MapDataEvent) => {\n this.fire(new Event(`${event.dataType}dataloading`, event));\n });\n }\n\n /*\n * Returns a unique number for this map instance which is used for the MapLoadEvent\n * to make sure we only fire one event per instantiated map object.\n * @private\n * @returns {number}\n */\n _getMapId() {\n return this._mapId;\n }\n\n /**\n * Adds an {@link IControl} to the map, calling `control.onAdd(this)`.\n *\n * @param {IControl} control The {@link IControl} to add.\n * @param {string} [position] position on the map to which the control will be added.\n * Valid values are `'top-left'`, `'top-right'`, `'bottom-left'`, and `'bottom-right'`. Defaults to `'top-right'`.\n * @returns {Map} `this`\n * @example\n * // Add zoom and rotation controls to the map.\n * map.addControl(new mapboxgl.NavigationControl());\n * @see [Display map navigation controls](https://www.mapbox.com/mapbox-gl-js/example/navigation/)\n */\n addControl(control: IControl, position?: ControlPosition) {\n if (position === undefined) {\n if (control.getDefaultPosition) {\n position = control.getDefaultPosition();\n } else {\n position = 'top-right';\n }\n }\n if (!control || !control.onAdd) {\n return this.fire(new ErrorEvent(new Error(\n 'Invalid argument to map.addControl(). Argument must be a control with onAdd and onRemove methods.')));\n }\n const controlElement = control.onAdd(this);\n this._controls.push(control);\n\n const positionContainer = this._controlPositions[position];\n if (position.indexOf('bottom') !== -1) {\n positionContainer.insertBefore(controlElement, positionContainer.firstChild);\n } else {\n positionContainer.appendChild(controlElement);\n }\n return this;\n }\n\n /**\n * Removes the control from the map.\n *\n * @param {IControl} control The {@link IControl} to remove.\n * @returns {Map} `this`\n * @example\n * // Define a new navigation control.\n * var navigation = new mapboxgl.NavigationControl();\n * // Add zoom and rotation controls to the map.\n * map.addControl(navigation);\n * // Remove zoom and rotation controls from the map.\n * map.removeControl(navigation);\n */\n removeControl(control: IControl) {\n if (!control || !control.onRemove) {\n return this.fire(new ErrorEvent(new Error(\n 'Invalid argument to map.removeControl(). Argument must be a control with onAdd and onRemove methods.')));\n }\n const ci = this._controls.indexOf(control);\n if (ci > -1) this._controls.splice(ci, 1);\n control.onRemove(this);\n return this;\n }\n\n /**\n * Checks if a control exists on the map.\n *\n * @param {IControl} control The {@link IControl} to check.\n * @returns {boolean} True if map contains control.\n * @example\n * // Define a new navigation control.\n * var navigation = new mapboxgl.NavigationControl();\n * // Add zoom and rotation controls to the map.\n * map.addControl(navigation);\n * // Check that the navigation control exists on the map.\n * map.hasControl(navigation);\n */\n hasControl(control: IControl) {\n return this._controls.indexOf(control) > -1;\n }\n\n /**\n * Resizes the map according to the dimensions of its\n * `container` element.\n *\n * Checks if the map container size changed and updates the map if it has changed.\n * This method must be called after the map's `container` is resized programmatically\n * or when the map is shown after being initially hidden with CSS.\n *\n * @param eventData Additional properties to be passed to `movestart`, `move`, `resize`, and `moveend`\n * events that get triggered as a result of resize. This can be useful for differentiating the\n * source of an event (for example, user-initiated or programmatically-triggered events).\n * @returns {Map} `this`\n * @example\n * // Resize the map when the map container is shown\n * // after being initially hidden with CSS.\n * var mapDiv = document.getElementById('map');\n * if (mapDiv.style.visibility === true) map.resize();\n */\n resize(eventData?: Object) {\n const [width, height] = this._containerDimensions();\n\n // do nothing if container remained the same size\n if (width === this.transform.width && height === this.transform.height) return this;\n\n this._resizeCanvas(width, height);\n this.transform.resize(width, height);\n this.painter.resize(width, height);\n\n const fireMoving = !this._moving;\n if (fireMoving) {\n this.fire(new Event('movestart', eventData))\n .fire(new Event('move', eventData));\n }\n\n this.fire(new Event('resize', eventData));\n\n if (fireMoving) this.fire(new Event('moveend', eventData));\n\n return this;\n }\n\n /**\n * Returns the map's geographical bounds. When the bearing or pitch is non-zero, the visible region is not\n * an axis-aligned rectangle, and the result is the smallest bounds that encompasses the visible region.\n * @returns {LngLatBounds} The geographical bounds of the map as {@link LngLatBounds}.\n * @example\n * var bounds = map.getBounds();\n */\n getBounds(): LngLatBounds {\n return this.transform.getBounds();\n }\n\n /**\n * Returns the maximum geographical bounds the map is constrained to, or `null` if none set.\n * @returns The map object.\n * @example\n * var maxBounds = map.getMaxBounds();\n */\n getMaxBounds(): LngLatBounds | null {\n return this.transform.getMaxBounds();\n }\n\n /**\n * Sets or clears the map's geographical bounds.\n *\n * Pan and zoom operations are constrained within these bounds.\n * If a pan or zoom is performed that would\n * display regions outside these bounds, the map will\n * instead display a position and zoom level\n * as close as possible to the operation's request while still\n * remaining within the bounds.\n *\n * @param {LngLatBoundsLike | null | undefined} bounds The maximum bounds to set. If `null` or `undefined` is provided, the function removes the map's maximum bounds.\n * @returns {Map} `this`\n * @example\n * // Define bounds that conform to the `LngLatBoundsLike` object.\n * var bounds = [\n * [-74.04728, 40.68392], // [west, south]\n * [-73.91058, 40.87764] // [east, north]\n * ];\n * // Set the map's max bounds.\n * map.setMaxBounds(bounds);\n */\n setMaxBounds(bounds: LngLatBoundsLike) {\n this.transform.setMaxBounds(LngLatBounds.convert(bounds));\n return this._update();\n }\n\n /**\n * Sets or clears the map's minimum zoom level.\n * If the map's current zoom level is lower than the new minimum,\n * the map will zoom to the new minimum.\n *\n * It is not always possible to zoom out and reach the set `minZoom`.\n * Other factors such as map height may restrict zooming. For example,\n * if the map is 512px tall it will not be possible to zoom below zoom 0\n * no matter what the `minZoom` is set to.\n *\n * @param {number | null | undefined} minZoom The minimum zoom level to set (-2 - 24).\n * If `null` or `undefined` is provided, the function removes the current minimum zoom (i.e. sets it to -2).\n * @returns {Map} `this`\n * @example\n * map.setMinZoom(12.25);\n */\n setMinZoom(minZoom?: ?number) {\n\n minZoom = minZoom === null || minZoom === undefined ? defaultMinZoom : minZoom;\n\n if (minZoom >= defaultMinZoom && minZoom <= this.transform.maxZoom) {\n this.transform.minZoom = minZoom;\n this._update();\n\n if (this.getZoom() < minZoom) this.setZoom(minZoom);\n\n return this;\n\n } else throw new Error(`minZoom must be between ${defaultMinZoom} and the current maxZoom, inclusive`);\n }\n\n /**\n * Returns the map's minimum allowable zoom level.\n *\n * @returns {number} minZoom\n * @example\n * var minZoom = map.getMinZoom();\n */\n getMinZoom() { return this.transform.minZoom; }\n\n /**\n * Sets or clears the map's maximum zoom level.\n * If the map's current zoom level is higher than the new maximum,\n * the map will zoom to the new maximum.\n *\n * @param {number | null | undefined} maxZoom The maximum zoom level to set.\n * If `null` or `undefined` is provided, the function removes the current maximum zoom (sets it to 22).\n * @returns {Map} `this`\n * @example\n * map.setMaxZoom(18.75);\n */\n setMaxZoom(maxZoom?: ?number) {\n\n maxZoom = maxZoom === null || maxZoom === undefined ? defaultMaxZoom : maxZoom;\n\n if (maxZoom >= this.transform.minZoom) {\n this.transform.maxZoom = maxZoom;\n this._update();\n\n if (this.getZoom() > maxZoom) this.setZoom(maxZoom);\n\n return this;\n\n } else throw new Error(`maxZoom must be greater than the current minZoom`);\n }\n\n /**\n * Returns the map's maximum allowable zoom level.\n *\n * @returns {number} maxZoom\n * @example\n * var maxZoom = map.getMaxZoom();\n */\n getMaxZoom() { return this.transform.maxZoom; }\n\n /**\n * Sets or clears the map's minimum pitch.\n * If the map's current pitch is lower than the new minimum,\n * the map will pitch to the new minimum.\n *\n * @param {number | null | undefined} minPitch The minimum pitch to set (0-60).\n * If `null` or `undefined` is provided, the function removes the current minimum pitch (i.e. sets it to 0).\n * @returns {Map} `this`\n */\n setMinPitch(minPitch?: ?number) {\n\n minPitch = minPitch === null || minPitch === undefined ? defaultMinPitch : minPitch;\n\n if (minPitch < defaultMinPitch) {\n throw new Error(`minPitch must be greater than or equal to ${defaultMinPitch}`);\n }\n\n if (minPitch >= defaultMinPitch && minPitch <= this.transform.maxPitch) {\n this.transform.minPitch = minPitch;\n this._update();\n\n if (this.getPitch() < minPitch) this.setPitch(minPitch);\n\n return this;\n\n } else throw new Error(`minPitch must be between ${defaultMinPitch} and the current maxPitch, inclusive`);\n }\n\n /**\n * Returns the map's minimum allowable pitch.\n *\n * @returns {number} minPitch\n */\n getMinPitch() { return this.transform.minPitch; }\n\n /**\n * Sets or clears the map's maximum pitch.\n * If the map's current pitch is higher than the new maximum,\n * the map will pitch to the new maximum.\n *\n * @param {number | null | undefined} maxPitch The maximum pitch to set.\n * If `null` or `undefined` is provided, the function removes the current maximum pitch (sets it to 60).\n * @returns {Map} `this`\n */\n setMaxPitch(maxPitch?: ?number) {\n\n maxPitch = maxPitch === null || maxPitch === undefined ? defaultMaxPitch : maxPitch;\n\n if (maxPitch > defaultMaxPitch) {\n throw new Error(`maxPitch must be less than or equal to ${defaultMaxPitch}`);\n }\n\n if (maxPitch >= this.transform.minPitch) {\n this.transform.maxPitch = maxPitch;\n this._update();\n\n if (this.getPitch() > maxPitch) this.setPitch(maxPitch);\n\n return this;\n\n } else throw new Error(`maxPitch must be greater than the current minPitch`);\n }\n\n /**\n * Returns the map's maximum allowable pitch.\n *\n * @returns {number} maxPitch\n */\n getMaxPitch() { return this.transform.maxPitch; }\n\n /**\n * Returns the state of `renderWorldCopies`. If `true`, multiple copies of the world will be rendered side by side beyond -180 and 180 degrees longitude. If set to `false`:\n * - When the map is zoomed out far enough that a single representation of the world does not fill the map's entire\n * container, there will be blank space beyond 180 and -180 degrees longitude.\n * - Features that cross 180 and -180 degrees longitude will be cut in two (with one portion on the right edge of the\n * map and the other on the left edge of the map) at every zoom level.\n * @returns {boolean} renderWorldCopies\n * @example\n * var worldCopiesRendered = map.getRenderWorldCopies();\n * @see [Render world copies](https://docs.mapbox.com/mapbox-gl-js/example/render-world-copies/)\n */\n getRenderWorldCopies() { return this.transform.renderWorldCopies; }\n\n /**\n * Sets the state of `renderWorldCopies`.\n *\n * @param {boolean} renderWorldCopies If `true`, multiple copies of the world will be rendered side by side beyond -180 and 180 degrees longitude. If set to `false`:\n * - When the map is zoomed out far enough that a single representation of the world does not fill the map's entire\n * container, there will be blank space beyond 180 and -180 degrees longitude.\n * - Features that cross 180 and -180 degrees longitude will be cut in two (with one portion on the right edge of the\n * map and the other on the left edge of the map) at every zoom level.\n *\n * `undefined` is treated as `true`, `null` is treated as `false`.\n * @returns {Map} `this`\n * @example\n * map.setRenderWorldCopies(true);\n * @see [Render world copies](https://docs.mapbox.com/mapbox-gl-js/example/render-world-copies/)\n */\n setRenderWorldCopies(renderWorldCopies?: ?boolean) {\n this.transform.renderWorldCopies = renderWorldCopies;\n return this._update();\n }\n\n /**\n * Returns a {@link Point} representing pixel coordinates, relative to the map's `container`,\n * that correspond to the specified geographical location.\n *\n * @param {LngLatLike} lnglat The geographical location to project.\n * @returns {Point} The {@link Point} corresponding to `lnglat`, relative to the map's `container`.\n * @example\n * var coordinate = [-122.420679, 37.772537];\n * var point = map.project(coordinate);\n */\n project(lnglat: LngLatLike) {\n return this.transform.locationPoint(LngLat.convert(lnglat));\n }\n\n /**\n * Returns a {@link LngLat} representing geographical coordinates that correspond\n * to the specified pixel coordinates.\n *\n * @param {PointLike} point The pixel coordinates to unproject.\n * @returns {LngLat} The {@link LngLat} corresponding to `point`.\n * @example\n * map.on('click', function(e) {\n * // When the map is clicked, get the geographic coordinate.\n * var coordinate = map.unproject(e.point);\n * });\n */\n unproject(point: PointLike) {\n return this.transform.pointLocation(Point.convert(point));\n }\n\n /**\n * Returns true if the map is panning, zooming, rotating, or pitching due to a camera animation or user gesture.\n * @returns {boolean} True if the map is moving.\n * @example\n * var isMoving = map.isMoving();\n */\n isMoving(): boolean {\n return this._moving || this.handlers.isMoving();\n }\n\n /**\n * Returns true if the map is zooming due to a camera animation or user gesture.\n * @returns {boolean} True if the map is zooming.\n * @example\n * var isZooming = map.isZooming();\n */\n isZooming(): boolean {\n return this._zooming || this.handlers.isZooming();\n }\n\n /**\n * Returns true if the map is rotating due to a camera animation or user gesture.\n * @returns {boolean} True if the map is rotating.\n * @example\n * map.isRotating();\n */\n isRotating(): boolean {\n return this._rotating || this.handlers.isRotating();\n }\n\n _createDelegatedListener(type: MapEvent, layerId: any, listener: any) {\n if (type === 'mouseenter' || type === 'mouseover') {\n let mousein = false;\n const mousemove = (e) => {\n const features = this.getLayer(layerId) ? this.queryRenderedFeatures(e.point, {layers: [layerId]}) : [];\n if (!features.length) {\n mousein = false;\n } else if (!mousein) {\n mousein = true;\n listener.call(this, new MapMouseEvent(type, this, e.originalEvent, {features}));\n }\n };\n const mouseout = () => {\n mousein = false;\n };\n return {layer: layerId, listener, delegates: {mousemove, mouseout}};\n } else if (type === 'mouseleave' || type === 'mouseout') {\n let mousein = false;\n const mousemove = (e) => {\n const features = this.getLayer(layerId) ? this.queryRenderedFeatures(e.point, {layers: [layerId]}) : [];\n if (features.length) {\n mousein = true;\n } else if (mousein) {\n mousein = false;\n listener.call(this, new MapMouseEvent(type, this, e.originalEvent));\n }\n };\n const mouseout = (e) => {\n if (mousein) {\n mousein = false;\n listener.call(this, new MapMouseEvent(type, this, e.originalEvent));\n }\n };\n return {layer: layerId, listener, delegates: {mousemove, mouseout}};\n } else {\n const delegate = (e) => {\n const features = this.getLayer(layerId) ? this.queryRenderedFeatures(e.point, {layers: [layerId]}) : [];\n if (features.length) {\n // Here we need to mutate the original event, so that preventDefault works as expected.\n e.features = features;\n listener.call(this, e);\n delete e.features;\n }\n };\n return {layer: layerId, listener, delegates: {[type]: delegate}};\n }\n }\n\n /**\n * Adds a listener for events of a specified type, optionally limited to features in a specified style layer.\n *\n * @param {string} type The event type to listen for. Events compatible with the optional `layerId` parameter are triggered\n * when the cursor enters a visible portion of the specified layer from outside that layer or outside the map canvas.\n *\n * | Event | Compatible with `layerId` |\n * |-----------------------------------------------------------|---------------------------|\n * | [`mousedown`](#map.event:mousedown) | yes |\n * | [`mouseup`](#map.event:mouseup) | yes |\n * | [`mouseover`](#map.event:mouseover) | yes |\n * | [`mouseout`](#map.event:mouseout) | yes |\n * | [`mousemove`](#map.event:mousemove) | yes |\n * | [`mouseenter`](#map.event:mouseenter) | yes (required) |\n * | [`mouseleave`](#map.event:mouseleave) | yes (required) |\n * | [`click`](#map.event:click) | yes |\n * | [`dblclick`](#map.event:dblclick) | yes |\n * | [`contextmenu`](#map.event:contextmenu) | yes |\n * | [`touchstart`](#map.event:touchstart) | yes |\n * | [`touchend`](#map.event:touchend) | yes |\n * | [`touchcancel`](#map.event:touchcancel) | yes |\n * | [`wheel`](#map.event:wheel) | |\n * | [`resize`](#map.event:resize) | |\n * | [`remove`](#map.event:remove) | |\n * | [`touchmove`](#map.event:touchmove) | |\n * | [`movestart`](#map.event:movestart) | |\n * | [`move`](#map.event:move) | |\n * | [`moveend`](#map.event:moveend) | |\n * | [`dragstart`](#map.event:dragstart) | |\n * | [`drag`](#map.event:drag) | |\n * | [`dragend`](#map.event:dragend) | |\n * | [`zoomstart`](#map.event:zoomstart) | |\n * | [`zoom`](#map.event:zoom) | |\n * | [`zoomend`](#map.event:zoomend) | |\n * | [`rotatestart`](#map.event:rotatestart) | |\n * | [`rotate`](#map.event:rotate) | |\n * | [`rotateend`](#map.event:rotateend) | |\n * | [`pitchstart`](#map.event:pitchstart) | |\n * | [`pitch`](#map.event:pitch) | |\n * | [`pitchend`](#map.event:pitchend) | |\n * | [`boxzoomstart`](#map.event:boxzoomstart) | |\n * | [`boxzoomend`](#map.event:boxzoomend) | |\n * | [`boxzoomcancel`](#map.event:boxzoomcancel) | |\n * | [`webglcontextlost`](#map.event:webglcontextlost) | |\n * | [`webglcontextrestored`](#map.event:webglcontextrestored) | |\n * | [`load`](#map.event:load) | |\n * | [`render`](#map.event:render) | |\n * | [`idle`](#map.event:idle) | |\n * | [`error`](#map.event:error) | |\n * | [`data`](#map.event:data) | |\n * | [`styledata`](#map.event:styledata) | |\n * | [`sourcedata`](#map.event:sourcedata) | |\n * | [`dataloading`](#map.event:dataloading) | |\n * | [`styledataloading`](#map.event:styledataloading) | |\n * | [`sourcedataloading`](#map.event:sourcedataloading) | |\n * | [`styleimagemissing`](#map.event:styleimagemissing) | |\n *\n * @param {string} layerId (optional) The ID of a style layer. Event will only be triggered if its location\n * is within a visible feature in this layer. The event will have a `features` property containing\n * an array of the matching features. If `layerId` is not supplied, the event will not have a `features` property.\n * Please note that many event types are not compatible with the optional `layerId` parameter.\n * @param {Function} listener The function to be called when the event is fired.\n * @returns {Map} `this`\n * @example\n * // Set an event listener that will fire\n * // when the map has finished loading\n * map.on('load', function() {\n * // Once the map has finished loading,\n * // add a new layer\n * map.addLayer({\n * id: 'points-of-interest',\n * source: {\n * type: 'vector',\n * url: 'mapbox://mapbox.mapbox-streets-v8'\n * },\n * 'source-layer': 'poi_label',\n * type: 'circle',\n * paint: {\n * // Mapbox Style Specification paint properties\n * },\n * layout: {\n * // Mapbox Style Specification layout properties\n * }\n * });\n * });\n * @example\n * // Set an event listener that will fire\n * // when a feature on the countries layer of the map is clicked\n * map.on('click', 'countries', function(e) {\n * new mapboxgl.Popup()\n * .setLngLat(e.lngLat)\n * .setHTML(`Country name: ${e.features[0].properties.name}`)\n * .addTo(map);\n * });\n * @see [Display popup on click](https://docs.mapbox.com/mapbox-gl-js/example/popup-on-click/)\n * @see [Center the map on a clicked symbol](https://docs.mapbox.com/mapbox-gl-js/example/center-on-symbol/)\n * @see [Create a hover effect](https://docs.mapbox.com/mapbox-gl-js/example/hover-styles/)\n * @see [Create a draggable marker](https://docs.mapbox.com/mapbox-gl-js/example/drag-a-point/)\n */\n on(type: MapEvent, layerId: any, listener: any) {\n if (listener === undefined) {\n return super.on(type, layerId);\n }\n\n const delegatedListener = this._createDelegatedListener(type, layerId, listener);\n\n this._delegatedListeners = this._delegatedListeners || {};\n this._delegatedListeners[type] = this._delegatedListeners[type] || [];\n this._delegatedListeners[type].push(delegatedListener);\n\n for (const event in delegatedListener.delegates) {\n this.on((event: any), delegatedListener.delegates[event]);\n }\n\n return this;\n }\n\n /**\n * Adds a listener that will be called only once to a specified event type.\n *\n * @method\n * @name once\n * @memberof Map\n * @instance\n * @param {string} type The event type to add a listener for.\n * @param {Function} listener The function to be called when the event is fired.\n * The listener function is called with the data object passed to `fire`,\n * extended with `target` and `type` properties.\n * @returns {Map} `this`\n */\n\n /**\n * Adds a listener that will be called only once to a specified event type occurring on features in a specified style layer.\n *\n * @param {string} type The event type to listen for; one of `'mousedown'`, `'mouseup'`, `'click'`, `'dblclick'`,\n * `'mousemove'`, `'mouseenter'`, `'mouseleave'`, `'mouseover'`, `'mouseout'`, `'contextmenu'`, `'touchstart'`,\n * `'touchend'`, or `'touchcancel'`. `mouseenter` and `mouseover` events are triggered when the cursor enters\n * a visible portion of the specified layer from outside that layer or outside the map canvas. `mouseleave`\n * and `mouseout` events are triggered when the cursor leaves a visible portion of the specified layer, or leaves\n * the map canvas.\n * @param {string} layerId The ID of a style layer. Only events whose location is within a visible\n * feature in this layer will trigger the listener. The event will have a `features` property containing\n * an array of the matching features.\n * @param {Function} listener The function to be called when the event is fired.\n * @returns {Map} `this`\n */\n\n once(type: MapEvent, layerId: any, listener: any) {\n\n if (listener === undefined) {\n return super.once(type, layerId);\n }\n\n const delegatedListener = this._createDelegatedListener(type, layerId, listener);\n\n for (const event in delegatedListener.delegates) {\n this.once((event: any), delegatedListener.delegates[event]);\n }\n\n return this;\n }\n\n /**\n * Removes an event listener previously added with `Map#on`.\n *\n * @method\n * @name off\n * @memberof Map\n * @instance\n * @param {string} type The event type previously used to install the listener.\n * @param {Function} listener The function previously installed as a listener.\n * @returns {Map} `this`\n */\n\n /**\n * Removes an event listener for layer-specific events previously added with `Map#on`.\n *\n * @param {string} type The event type previously used to install the listener.\n * @param {string} layerId The layer ID previously used to install the listener.\n * @param {Function} listener The function previously installed as a listener.\n * @returns {Map} `this`\n */\n off(type: MapEvent, layerId: any, listener: any) {\n if (listener === undefined) {\n return super.off(type, layerId);\n }\n\n const removeDelegatedListener = (delegatedListeners) => {\n const listeners = delegatedListeners[type];\n for (let i = 0; i < listeners.length; i++) {\n const delegatedListener = listeners[i];\n if (delegatedListener.layer === layerId && delegatedListener.listener === listener) {\n for (const event in delegatedListener.delegates) {\n this.off((event: any), delegatedListener.delegates[event]);\n }\n listeners.splice(i, 1);\n return this;\n }\n }\n };\n\n if (this._delegatedListeners && this._delegatedListeners[type]) {\n removeDelegatedListener(this._delegatedListeners);\n }\n\n return this;\n }\n\n /**\n * Returns an array of [GeoJSON](http://geojson.org/)\n * [Feature objects](https://tools.ietf.org/html/rfc7946#section-3.2)\n * representing visible features that satisfy the query parameters.\n *\n * @param {PointLike|Array} [geometry] - The geometry of the query region:\n * either a single point or southwest and northeast points describing a bounding box.\n * Omitting this parameter (i.e. calling {@link Map#queryRenderedFeatures} with zero arguments,\n * or with only a `options` argument) is equivalent to passing a bounding box encompassing the entire\n * map viewport.\n * @param {Object} [options] Options object.\n * @param {Array} [options.layers] An array of [style layer IDs](https://docs.mapbox.com/mapbox-gl-js/style-spec/#layer-id) for the query to inspect.\n * Only features within these layers will be returned. If this parameter is undefined, all layers will be checked.\n * @param {Array} [options.filter] A [filter](https://docs.mapbox.com/mapbox-gl-js/style-spec/layers/#filter)\n * to limit query results.\n * @param {boolean} [options.validate=true] Whether to check if the [options.filter] conforms to the Mapbox GL Style Specification. Disabling validation is a performance optimization that should only be used if you have previously validated the values you will be passing to this function.\n *\n * @returns {Array} An array of [GeoJSON](http://geojson.org/)\n * [feature objects](https://tools.ietf.org/html/rfc7946#section-3.2).\n *\n * The `properties` value of each returned feature object contains the properties of its source feature. For GeoJSON sources, only\n * string and numeric property values are supported (i.e. `null`, `Array`, and `Object` values are not supported).\n *\n * Each feature includes top-level `layer`, `source`, and `sourceLayer` properties. The `layer` property is an object\n * representing the style layer to which the feature belongs. Layout and paint properties in this object contain values\n * which are fully evaluated for the given zoom level and feature.\n *\n * Only features that are currently rendered are included. Some features will **not** be included, like:\n *\n * - Features from layers whose `visibility` property is `\"none\"`.\n * - Features from layers whose zoom range excludes the current zoom level.\n * - Symbol features that have been hidden due to text or icon collision.\n *\n * Features from all other layers are included, including features that may have no visible\n * contribution to the rendered result; for example, because the layer's opacity or color alpha component is set to\n * 0.\n *\n * The topmost rendered feature appears first in the returned array, and subsequent features are sorted by\n * descending z-order. Features that are rendered multiple times (due to wrapping across the antimeridian at low\n * zoom levels) are returned only once (though subject to the following caveat).\n *\n * Because features come from tiled vector data or GeoJSON data that is converted to tiles internally, feature\n * geometries may be split or duplicated across tile boundaries and, as a result, features may appear multiple\n * times in query results. For example, suppose there is a highway running through the bounding rectangle of a query.\n * The results of the query will be those parts of the highway that lie within the map tiles covering the bounding\n * rectangle, even if the highway extends into other tiles, and the portion of the highway within each map tile\n * will be returned as a separate feature. Similarly, a point feature near a tile boundary may appear in multiple\n * tiles due to tile buffering.\n *\n * @example\n * // Find all features at a point\n * var features = map.queryRenderedFeatures(\n * [20, 35],\n * { layers: ['my-layer-name'] }\n * );\n *\n * @example\n * // Find all features within a static bounding box\n * var features = map.queryRenderedFeatures(\n * [[10, 20], [30, 50]],\n * { layers: ['my-layer-name'] }\n * );\n *\n * @example\n * // Find all features within a bounding box around a point\n * var width = 10;\n * var height = 20;\n * var features = map.queryRenderedFeatures([\n * [point.x - width / 2, point.y - height / 2],\n * [point.x + width / 2, point.y + height / 2]\n * ], { layers: ['my-layer-name'] });\n *\n * @example\n * // Query all rendered features from a single layer\n * var features = map.queryRenderedFeatures({ layers: ['my-layer-name'] });\n * @see [Get features under the mouse pointer](https://www.mapbox.com/mapbox-gl-js/example/queryrenderedfeatures/)\n * @see [Highlight features within a bounding box](https://www.mapbox.com/mapbox-gl-js/example/using-box-queryrenderedfeatures/)\n * @see [Filter features within map view](https://www.mapbox.com/mapbox-gl-js/example/filter-features-within-map-view/)\n */\n queryRenderedFeatures(geometry?: PointLike | [PointLike, PointLike], options?: Object) {\n // The first parameter can be omitted entirely, making this effectively an overloaded method\n // with two signatures:\n //\n // queryRenderedFeatures(geometry: PointLike | [PointLike, PointLike], options?: Object)\n // queryRenderedFeatures(options?: Object)\n //\n // There no way to express that in a way that's compatible with both flow and documentation.js.\n // Related: https://github.com/facebook/flow/issues/1556\n\n if (!this.style) {\n return [];\n }\n\n if (options === undefined && geometry !== undefined && !(geometry instanceof Point) && !Array.isArray(geometry)) {\n options = (geometry: Object);\n geometry = undefined;\n }\n\n options = options || {};\n geometry = geometry || [[0, 0], [this.transform.width, this.transform.height]];\n\n let queryGeometry;\n if (geometry instanceof Point || typeof geometry[0] === 'number') {\n queryGeometry = [Point.convert(geometry)];\n } else {\n const tl = Point.convert(geometry[0]);\n const br = Point.convert(geometry[1]);\n queryGeometry = [tl, new Point(br.x, tl.y), br, new Point(tl.x, br.y), tl];\n }\n\n return this.style.queryRenderedFeatures(queryGeometry, options, this.transform);\n }\n\n /**\n * Returns an array of [GeoJSON](http://geojson.org/)\n * [Feature objects](https://tools.ietf.org/html/rfc7946#section-3.2)\n * representing features within the specified vector tile or GeoJSON source that satisfy the query parameters.\n *\n * @param {string} sourceId The ID of the vector tile or GeoJSON source to query.\n * @param {Object} [parameters] Options object.\n * @param {string} [parameters.sourceLayer] The name of the [source layer](https://docs.mapbox.com/help/glossary/source-layer/)\n * to query. *For vector tile sources, this parameter is required.* For GeoJSON sources, it is ignored.\n * @param {Array} [parameters.filter] A [filter](https://docs.mapbox.com/mapbox-gl-js/style-spec/layers/#filter)\n * to limit query results.\n * @param {boolean} [parameters.validate=true] Whether to check if the [parameters.filter] conforms to the Mapbox GL Style Specification. Disabling validation is a performance optimization that should only be used if you have previously validated the values you will be passing to this function.\n *\n * @returns {Array} An array of [GeoJSON](http://geojson.org/)\n * [Feature objects](https://tools.ietf.org/html/rfc7946#section-3.2).\n *\n * In contrast to {@link Map#queryRenderedFeatures}, this function returns all features matching the query parameters,\n * whether or not they are rendered by the current style (i.e. visible). The domain of the query includes all currently-loaded\n * vector tiles and GeoJSON source tiles: this function does not check tiles outside the currently\n * visible viewport.\n *\n * Because features come from tiled vector data or GeoJSON data that is converted to tiles internally, feature\n * geometries may be split or duplicated across tile boundaries and, as a result, features may appear multiple\n * times in query results. For example, suppose there is a highway running through the bounding rectangle of a query.\n * The results of the query will be those parts of the highway that lie within the map tiles covering the bounding\n * rectangle, even if the highway extends into other tiles, and the portion of the highway within each map tile\n * will be returned as a separate feature. Similarly, a point feature near a tile boundary may appear in multiple\n * tiles due to tile buffering.\n *\n * @example\n * // Find all features in one source layer in a vector source\n * var features = map.querySourceFeatures('your-source-id', {\n * sourceLayer: 'your-source-layer'\n * });\n *\n * @see [Highlight features containing similar data](https://www.mapbox.com/mapbox-gl-js/example/query-similar-features/)\n */\n querySourceFeatures(sourceId: string, parameters: ?{sourceLayer: ?string, filter: ?Array, validate?: boolean}) {\n return this.style.querySourceFeatures(sourceId, parameters);\n }\n\n /**\n * Updates the map's Mapbox style object with a new value.\n *\n * If a style is already set when this is used and options.diff is set to true, the map renderer will attempt to compare the given style\n * against the map's current state and perform only the changes necessary to make the map style match the desired state. Changes in sprites\n * (images used for icons and patterns) and glyphs (fonts for label text) **cannot** be diffed. If the sprites or fonts used in the current\n * style and the given style are different in any way, the map renderer will force a full update, removing the current style and building\n * the given one from scratch.\n *\n *\n * @param style A JSON object conforming to the schema described in the\n * [Mapbox Style Specification](https://mapbox.com/mapbox-gl-style-spec/), or a URL to such JSON.\n * @param {Object} [options] Options object.\n * @param {boolean} [options.diff=true] If false, force a 'full' update, removing the current style\n * and building the given one instead of attempting a diff-based update.\n * @param {string} [options.localIdeographFontFamily='sans-serif'] Defines a CSS\n * font-family for locally overriding generation of glyphs in the 'CJK Unified Ideographs', 'Hiragana', 'Katakana' and 'Hangul Syllables' ranges.\n * In these ranges, font settings from the map's style will be ignored, except for font-weight keywords (light/regular/medium/bold).\n * Set to `false`, to enable font settings from the map's style for these glyph ranges.\n * Forces a full update.\n * @returns {Map} `this`\n *\n * @example\n * map.setStyle(\"mapbox://styles/mapbox/streets-v11\");\n *\n * @see [Change a map's style](https://www.mapbox.com/mapbox-gl-js/example/setstyle/)\n */\n setStyle(style: StyleSpecification | string | null, options?: {diff?: boolean} & StyleOptions) {\n options = extend({}, {localIdeographFontFamily: this._localIdeographFontFamily}, options);\n\n if ((options.diff !== false && options.localIdeographFontFamily === this._localIdeographFontFamily) && this.style && style) {\n this._diffStyle(style, options);\n return this;\n } else {\n this._localIdeographFontFamily = options.localIdeographFontFamily;\n return this._updateStyle(style, options);\n }\n }\n\n _getUIString(key: string) {\n const str = this._locale[key];\n if (str == null) {\n throw new Error(`Missing UI string '${key}'`);\n }\n\n return str;\n }\n\n _updateStyle(style: StyleSpecification | string | null, options?: {diff?: boolean} & StyleOptions) {\n if (this.style) {\n this.style.setEventedParent(null);\n this.style._remove();\n }\n\n if (!style) {\n delete this.style;\n return this;\n } else {\n this.style = new Style(this, options || {});\n }\n\n this.style.setEventedParent(this, {style: this.style});\n\n if (typeof style === 'string') {\n this.style.loadURL(style);\n } else {\n this.style.loadJSON(style);\n }\n\n return this;\n }\n\n _lazyInitEmptyStyle() {\n if (!this.style) {\n this.style = new Style(this, {});\n this.style.setEventedParent(this, {style: this.style});\n this.style.loadEmpty();\n }\n }\n\n _diffStyle(style: StyleSpecification | string, options?: {diff?: boolean} & StyleOptions) {\n if (typeof style === 'string') {\n const url = this._requestManager.normalizeStyleURL(style);\n const request = this._requestManager.transformRequest(url, ResourceType.Style);\n getJSON(request, (error: ?Error, json: ?Object) => {\n if (error) {\n this.fire(new ErrorEvent(error));\n } else if (json) {\n this._updateDiff(json, options);\n }\n });\n } else if (typeof style === 'object') {\n this._updateDiff(style, options);\n }\n }\n\n _updateDiff(style: StyleSpecification, options?: {diff?: boolean} & StyleOptions) {\n try {\n if (this.style.setState(style)) {\n this._update(true);\n }\n } catch (e) {\n warnOnce(\n `Unable to perform style diff: ${e.message || e.error || e}. Rebuilding the style from scratch.`\n );\n this._updateStyle(style, options);\n }\n }\n\n /**\n * Returns the map's Mapbox [style](https://docs.mapbox.com/help/glossary/style/) object, a JSON object which can be used to recreate the map's style.\n *\n * @returns {Object} The map's style JSON object.\n *\n * @example\n * var styleJson = map.getStyle();\n *\n */\n getStyle() {\n if (this.style) {\n return this.style.serialize();\n }\n }\n\n /**\n * Returns a Boolean indicating whether the map's style is fully loaded.\n *\n * @returns {boolean} A Boolean indicating whether the style is fully loaded.\n *\n * @example\n * var styleLoadStatus = map.isStyleLoaded();\n */\n isStyleLoaded() {\n if (!this.style) return warnOnce('There is no style added to the map.');\n return this.style.loaded();\n }\n\n /**\n * Adds a source to the map's style.\n *\n * @param {string} id The ID of the source to add. Must not conflict with existing sources.\n * @param {Object} source The source object, conforming to the\n * Mapbox Style Specification's [source definition](https://www.mapbox.com/mapbox-gl-style-spec/#sources) or\n * {@link CanvasSourceOptions}.\n * @fires source.add\n * @returns {Map} `this`\n * @example\n * map.addSource('my-data', {\n * type: 'vector',\n * url: 'mapbox://myusername.tilesetid'\n * });\n * @example\n * map.addSource('my-data', {\n * \"type\": \"geojson\",\n * \"data\": {\n * \"type\": \"Feature\",\n * \"geometry\": {\n * \"type\": \"Point\",\n * \"coordinates\": [-77.0323, 38.9131]\n * },\n * \"properties\": {\n * \"title\": \"Mapbox DC\",\n * \"marker-symbol\": \"monument\"\n * }\n * }\n * });\n * @see Vector source: [Show and hide layers](https://docs.mapbox.com/mapbox-gl-js/example/toggle-layers/)\n * @see GeoJSON source: [Add live realtime data](https://docs.mapbox.com/mapbox-gl-js/example/live-geojson/)\n * @see Raster DEM source: [Add hillshading](https://docs.mapbox.com/mapbox-gl-js/example/hillshade/)\n */\n addSource(id: string, source: SourceSpecification) {\n this._lazyInitEmptyStyle();\n this.style.addSource(id, source);\n return this._update(true);\n }\n\n /**\n * Returns a Boolean indicating whether the source is loaded. Returns `true` if the source with\n * the given ID in the map's style has no outstanding network requests, otherwise `false`.\n *\n * @param {string} id The ID of the source to be checked.\n * @returns {boolean} A Boolean indicating whether the source is loaded.\n * @example\n * var sourceLoaded = map.isSourceLoaded('bathymetry-data');\n */\n isSourceLoaded(id: string) {\n const source = this.style && this.style.sourceCaches[id];\n if (source === undefined) {\n this.fire(new ErrorEvent(new Error(`There is no source with ID '${id}'`)));\n return;\n }\n return source.loaded();\n }\n\n /**\n * Returns a Boolean indicating whether all tiles in the viewport from all sources on\n * the style are loaded.\n *\n * @returns {boolean} A Boolean indicating whether all tiles are loaded.\n * @example\n * var tilesLoaded = map.areTilesLoaded();\n */\n\n areTilesLoaded() {\n const sources = this.style && this.style.sourceCaches;\n for (const id in sources) {\n const source = sources[id];\n const tiles = source._tiles;\n for (const t in tiles) {\n const tile = tiles[t];\n if (!(tile.state === 'loaded' || tile.state === 'errored')) return false;\n }\n }\n return true;\n }\n\n /**\n * Adds a [custom source type](#Custom Sources), making it available for use with\n * {@link Map#addSource}.\n * @private\n * @param {string} name The name of the source type; source definition objects use this name in the `{type: ...}` field.\n * @param {Function} SourceType A {@link Source} constructor.\n * @param {Function} callback Called when the source type is ready or with an error argument if there is an error.\n */\n addSourceType(name: string, SourceType: any, callback: Function) {\n this._lazyInitEmptyStyle();\n return this.style.addSourceType(name, SourceType, callback);\n }\n\n /**\n * Removes a source from the map's style.\n *\n * @param {string} id The ID of the source to remove.\n * @returns {Map} `this`\n * @example\n * map.removeSource('bathymetry-data');\n */\n removeSource(id: string) {\n this.style.removeSource(id);\n return this._update(true);\n }\n\n /**\n * Returns the source with the specified ID in the map's style.\n *\n * This method is often used to update a source using the instance members for the relevant\n * source type as defined in [Sources](#sources).\n * For example, setting the `data` for a GeoJSON source or updating the `url` and `coordinates`\n * of an image source.\n *\n * @param {string} id The ID of the source to get.\n * @returns {?Object} The style source with the specified ID or `undefined` if the ID\n * corresponds to no existing sources.\n * The shape of the object varies by source type.\n * A list of options for each source type is available on the Mapbox Style Specification's\n * [Sources](https://docs.mapbox.com/mapbox-gl-js/style-spec/sources/) page.\n * @example\n * var sourceObject = map.getSource('points');\n * @see [Create a draggable point](https://docs.mapbox.com/mapbox-gl-js/example/drag-a-point/)\n * @see [Animate a point](https://docs.mapbox.com/mapbox-gl-js/example/animate-point-along-line/)\n * @see [Add live realtime data](https://docs.mapbox.com/mapbox-gl-js/example/live-geojson/)\n */\n getSource(id: string) {\n return this.style.getSource(id);\n }\n\n // eslint-disable-next-line jsdoc/require-returns\n /**\n * Add an image to the style. This image can be displayed on the map like any other icon in the style's\n * [sprite](https://docs.mapbox.com/help/glossary/sprite/) using the image's ID with\n * [`icon-image`](https://docs.mapbox.com/mapbox-gl-js/style-spec/#layout-symbol-icon-image),\n * [`background-pattern`](https://docs.mapbox.com/mapbox-gl-js/style-spec/#paint-background-background-pattern),\n * [`fill-pattern`](https://docs.mapbox.com/mapbox-gl-js/style-spec/#paint-fill-fill-pattern),\n * or [`line-pattern`](https://docs.mapbox.com/mapbox-gl-js/style-spec/#paint-line-line-pattern).\n * A {@link Map.event:error} event will be fired if there is not enough space in the sprite to add this image.\n *\n * @param id The ID of the image.\n * @param image The image as an `HTMLImageElement`, `ImageData`, `ImageBitmap` or object with `width`, `height`, and `data`\n * properties with the same format as `ImageData`.\n * @param options Options object.\n * @param options.pixelRatio The ratio of pixels in the image to physical pixels on the screen\n * @param options.sdf Whether the image should be interpreted as an SDF image\n * @param options.content `[x1, y1, x2, y2]` If `icon-text-fit` is used in a layer with this image, this option defines the part of the image that can be covered by the content in `text-field`.\n * @param options.stretchX `[[x1, x2], ...]` If `icon-text-fit` is used in a layer with this image, this option defines the part(s) of the image that can be stretched horizontally.\n * @param options.stretchY `[[y1, y2], ...]` If `icon-text-fit` is used in a layer with this image, this option defines the part(s) of the image that can be stretched vertically.\n *\n * @example\n * // If the style's sprite does not already contain an image with ID 'cat',\n * // add the image 'cat-icon.png' to the style's sprite with the ID 'cat'.\n * map.loadImage('https://upload.wikimedia.org/wikipedia/commons/thumb/6/60/Cat_silhouette.svg/400px-Cat_silhouette.svg.png', function(error, image) {\n * if (error) throw error;\n * if (!map.hasImage('cat')) map.addImage('cat', image);\n * });\n *\n *\n * // Add a stretchable image that can be used with `icon-text-fit`\n * // In this example, the image is 600px wide by 400px high.\n * map.loadImage('https://upload.wikimedia.org/wikipedia/commons/8/89/Black_and_White_Boxed_%28bordered%29.png', function(error, image) {\n * if (error) throw error;\n * if (!map.hasImage('border-image')) {\n * map.addImage('border-image', image, {\n * content: [16, 16, 300, 384], // place text over left half of image, avoiding the 16px border\n * stretchX: [[16, 584]], // stretch everything horizontally except the 16px border\n * stretchY: [[16, 384]], // stretch everything vertically except the 16px border\n * });\n * }\n * });\n *\n *\n * @see Use `HTMLImageElement`: [Add an icon to the map](https://www.mapbox.com/mapbox-gl-js/example/add-image/)\n * @see Use `ImageData`: [Add a generated icon to the map](https://www.mapbox.com/mapbox-gl-js/example/add-image-generated/)\n */\n addImage(id: string,\n image: HTMLImageElement | ImageBitmap | ImageData | {width: number, height: number, data: Uint8Array | Uint8ClampedArray} | StyleImageInterface,\n {pixelRatio = 1, sdf = false, stretchX, stretchY, content}: $Shape = {}) {\n this._lazyInitEmptyStyle();\n const version = 0;\n\n if (image instanceof HTMLImageElement || (ImageBitmap && image instanceof ImageBitmap)) {\n const {width, height, data} = browser.getImageData(image);\n this.style.addImage(id, {data: new RGBAImage({width, height}, data), pixelRatio, stretchX, stretchY, content, sdf, version});\n } else if (image.width === undefined || image.height === undefined) {\n return this.fire(new ErrorEvent(new Error(\n 'Invalid arguments to map.addImage(). The second argument must be an `HTMLImageElement`, `ImageData`, `ImageBitmap`, ' +\n 'or object with `width`, `height`, and `data` properties with the same format as `ImageData`')));\n } else {\n const {width, height, data} = image;\n const userImage = ((image: any): StyleImageInterface);\n\n this.style.addImage(id, {\n data: new RGBAImage({width, height}, new Uint8Array(data)),\n pixelRatio,\n stretchX,\n stretchY,\n content,\n sdf,\n version,\n userImage\n });\n\n if (userImage.onAdd) {\n userImage.onAdd(this, id);\n }\n }\n }\n\n // eslint-disable-next-line jsdoc/require-returns\n /**\n * Update an existing image in a style. This image can be displayed on the map like any other icon in the style's\n * [sprite](https://docs.mapbox.com/help/glossary/sprite/) using the image's ID with\n * [`icon-image`](https://docs.mapbox.com/mapbox-gl-js/style-spec/#layout-symbol-icon-image),\n * [`background-pattern`](https://docs.mapbox.com/mapbox-gl-js/style-spec/#paint-background-background-pattern),\n * [`fill-pattern`](https://docs.mapbox.com/mapbox-gl-js/style-spec/#paint-fill-fill-pattern),\n * or [`line-pattern`](https://docs.mapbox.com/mapbox-gl-js/style-spec/#paint-line-line-pattern).\n *\n * @param id The ID of the image.\n * @param image The image as an `HTMLImageElement`, `ImageData`, `ImageBitmap` or object with `width`, `height`, and `data`\n * properties with the same format as `ImageData`.\n *\n * @example\n * // If an image with the ID 'cat' already exists in the style's sprite,\n * // replace that image with a new image, 'other-cat-icon.png'.\n * if (map.hasImage('cat')) map.updateImage('cat', './other-cat-icon.png');\n */\n updateImage(id: string,\n image: HTMLImageElement | ImageBitmap | ImageData | {width: number, height: number, data: Uint8Array | Uint8ClampedArray} | StyleImageInterface) {\n\n const existingImage = this.style.getImage(id);\n if (!existingImage) {\n return this.fire(new ErrorEvent(new Error(\n 'The map has no image with that id. If you are adding a new image use `map.addImage(...)` instead.')));\n }\n const imageData = (image instanceof HTMLImageElement || (ImageBitmap && image instanceof ImageBitmap)) ? browser.getImageData(image) : image;\n const {width, height, data} = imageData;\n\n if (width === undefined || height === undefined) {\n return this.fire(new ErrorEvent(new Error(\n 'Invalid arguments to map.updateImage(). The second argument must be an `HTMLImageElement`, `ImageData`, `ImageBitmap`, ' +\n 'or object with `width`, `height`, and `data` properties with the same format as `ImageData`')));\n }\n\n if (width !== existingImage.data.width || height !== existingImage.data.height) {\n return this.fire(new ErrorEvent(new Error(\n 'The width and height of the updated image must be that same as the previous version of the image')));\n }\n\n const copy = !(image instanceof HTMLImageElement || (ImageBitmap && image instanceof ImageBitmap));\n existingImage.data.replace(data, copy);\n\n this.style.updateImage(id, existingImage);\n }\n\n /**\n * Check whether or not an image with a specific ID exists in the style. This checks both images\n * in the style's original [sprite](https://docs.mapbox.com/help/glossary/sprite/) and any images\n * that have been added at runtime using {@link Map#addImage}.\n *\n * @param id The ID of the image.\n *\n * @returns {boolean} A Boolean indicating whether the image exists.\n * @example\n * // Check if an image with the ID 'cat' exists in\n * // the style's sprite.\n * var catIconExists = map.hasImage('cat');\n */\n hasImage(id: string): boolean {\n if (!id) {\n this.fire(new ErrorEvent(new Error('Missing required image id')));\n return false;\n }\n\n return !!this.style.getImage(id);\n }\n\n /**\n * Remove an image from a style. This can be an image from the style's original\n * [sprite](https://docs.mapbox.com/help/glossary/sprite/) or any images\n * that have been added at runtime using {@link Map#addImage}.\n *\n * @param id The ID of the image.\n *\n * @example\n * // If an image with the ID 'cat' exists in\n * // the style's sprite, remove it.\n * if (map.hasImage('cat')) map.removeImage('cat');\n */\n removeImage(id: string) {\n this.style.removeImage(id);\n }\n\n /**\n * Load an image from an external URL to be used with {@link Map#addImage}. External\n * domains must support [CORS](https://developer.mozilla.org/en-US/docs/Web/HTTP/Access_control_CORS).\n *\n * @param {string} url The URL of the image file. Image file must be in png, webp, or jpg format.\n * @param {Function} callback Expecting `callback(error, data)`. Called when the image has loaded or with an error argument if there is an error.\n *\n * @example\n * // Load an image from an external URL.\n * map.loadImage('http://placekitten.com/50/50', function(error, image) {\n * if (error) throw error;\n * // Add the loaded image to the style's sprite with the ID 'kitten'.\n * map.addImage('kitten', image);\n * });\n *\n * @see [Add an icon to the map](https://www.mapbox.com/mapbox-gl-js/example/add-image/)\n */\n loadImage(url: string, callback: Function) {\n getImage(this._requestManager.transformRequest(url, ResourceType.Image), callback);\n }\n\n /**\n * Returns an Array of strings containing the IDs of all images currently available in the map.\n * This includes both images from the style's original [sprite](https://docs.mapbox.com/help/glossary/sprite/)\n * and any images that have been added at runtime using {@link Map#addImage}.\n *\n * @returns {Array} An Array of strings containing the names of all sprites/images currently available in the map.\n *\n * @example\n * var allImages = map.listImages();\n *\n */\n listImages() {\n return this.style.listImages();\n }\n\n /**\n * Adds a [Mapbox style layer](https://docs.mapbox.com/mapbox-gl-js/style-spec/#layers)\n * to the map's style.\n *\n * A layer defines how data from a specified source will be styled. Read more about layer types\n * and available paint and layout properties in the [Mapbox Style Specification](https://docs.mapbox.com/mapbox-gl-js/style-spec/#layers).\n *\n * @param {Object | CustomLayerInterface} layer The layer to add, conforming to either the Mapbox Style Specification's [layer definition](https://docs.mapbox.com/mapbox-gl-js/style-spec/#layers) or, less commonly, the {@link CustomLayerInterface} specification.\n * The Mapbox Style Specification's layer definition is appropriate for most layers.\n *\n * @param {string} layer.id A unique idenfier that you define.\n * @param {string} layer.type The type of layer (for example `fill` or `symbol`).\n * A list of layer types is available in the [Mapbox Style Specification](https://docs.mapbox.com/mapbox-gl-js/style-spec/layers/#type).\n *\n * (This can also be `custom`. For more information, see {@link CustomLayerInterface}.)\n * @param {string | Object} [layer.source] The data source for the layer.\n * Reference a source that has _already been defined_ using the source's unique id.\n * Reference a _new source_ using a source object (as defined in the [Mapbox Style Specification](https://docs.mapbox.com/mapbox-gl-js/style-spec/sources/)) directly.\n * This is **required** for all `layer.type` options _except_ for `custom`.\n * @param {string} [layer.sourceLayer] (optional) The name of the [source layer](https://docs.mapbox.com/help/glossary/source-layer/) within the specified `layer.source` to use for this style layer.\n * This is only applicable for vector tile sources and is **required** when `layer.source` is of the type `vector`.\n * @param {array} [layer.filter] (optional) An expression specifying conditions on source features.\n * Only features that match the filter are displayed.\n * The Mapbox Style Specification includes more information on the limitations of the [`filter`](https://docs.mapbox.com/mapbox-gl-js/style-spec/layers/#filter) parameter\n * and a complete list of available [expressions](https://docs.mapbox.com/mapbox-gl-js/style-spec/expressions/).\n * If no filter is provided, all features in the source (or source layer for vector tilesets) will be displayed.\n * @param {Object} [layer.paint] (optional) Paint properties for the layer.\n * Available paint properties vary by `layer.type`.\n * A full list of paint properties for each layer type is available in the [Mapbox Style Specification](https://docs.mapbox.com/mapbox-gl-js/style-spec/layers/).\n * If no paint properties are specified, default values will be used.\n * @param {Object} [layer.layout] (optional) Layout properties for the layer.\n * Available layout properties vary by `layer.type`.\n * A full list of layout properties for each layer type is available in the [Mapbox Style Specification](https://docs.mapbox.com/mapbox-gl-js/style-spec/layers/).\n * If no layout properties are specified, default values will be used.\n * @param {number} [layer.maxzoom] (optional) The maximum zoom level for the layer.\n * At zoom levels equal to or greater than the maxzoom, the layer will be hidden.\n * The value can be any number between `0` and `24` (inclusive).\n * If no maxzoom is provided, the layer will be visible at all zoom levels for which there are tiles available.\n * @param {number} [layer.minzoom] (optional) The minimum zoom level for the layer.\n * At zoom levels less than the minzoom, the layer will be hidden.\n * The value can be any number between `0` and `24` (inclusive).\n * If no minzoom is provided, the layer will be visible at all zoom levels for which there are tiles available.\n * @param {Object} [layer.metadata] (optional) Arbitrary properties useful to track with the layer, but do not influence rendering.\n * @param {string} [layer.renderingMode] This is only applicable for layers with the type `custom`.\n * See {@link CustomLayerInterface} for more information.\n * @param {string} [beforeId] The ID of an existing layer to insert the new layer before,\n * resulting in the new layer appearing visually beneath the existing layer.\n * If this argument is not specified, the layer will be appended to the end of the layers array\n * and appear visually above all other layers.\n *\n * @returns {Map} `this`\n *\n * @example\n * // Add a circle layer with a vector source\n * map.addLayer({\n * id: 'points-of-interest',\n * source: {\n * type: 'vector',\n * url: 'mapbox://mapbox.mapbox-streets-v8'\n * },\n * 'source-layer': 'poi_label',\n * type: 'circle',\n * paint: {\n * // Mapbox Style Specification paint properties\n * },\n * layout: {\n * // Mapbox Style Specification layout properties\n * }\n * });\n *\n * @example\n * // Define a source before using it to create a new layer\n * map.addSource('state-data', {\n * type: 'geojson',\n * data: 'path/to/data.geojson'\n * });\n *\n * map.addLayer({\n * id: 'states',\n * // References the GeoJSON source defined above\n * // and does not require a `source-layer`\n * source: 'state-data',\n * type: 'symbol',\n * layout: {\n * // Set the label content to the\n * // feature's `name` property\n * text-field: ['get', 'name']\n * }\n * });\n *\n * @example\n * // Add a new symbol layer before an existing layer\n * map.addLayer({\n * id: 'states',\n * // References a source that's already been defined\n * source: 'state-data',\n * type: 'symbol',\n * layout: {\n * // Set the label content to the\n * // feature's `name` property\n * text-field: ['get', 'name']\n * }\n * // Add the layer before the existing `cities` layer\n * }, 'cities');\n *\n * @see [Create and style clusters](https://docs.mapbox.com/mapbox-gl-js/example/cluster/)\n * @see [Add a vector tile source](https://docs.mapbox.com/mapbox-gl-js/example/vector-source/)\n * @see [Add a WMS source](https://docs.mapbox.com/mapbox-gl-js/example/wms/)\n */\n addLayer(layer: LayerSpecification | CustomLayerInterface, beforeId?: string) {\n this._lazyInitEmptyStyle();\n this.style.addLayer(layer, beforeId);\n return this._update(true);\n }\n\n /**\n * Moves a layer to a different z-position.\n *\n * @param {string} id The ID of the layer to move.\n * @param {string} [beforeId] The ID of an existing layer to insert the new layer before. When viewing the map, the `id` layer will appear beneath the `beforeId` layer. If `beforeId` is omitted, the layer will be appended to the end of the layers array and appear above all other layers on the map.\n * @returns {Map} `this`\n *\n * @example\n * // Move a layer with ID 'polygon' before the layer with ID 'country-label'. The `polygon` layer will appear beneath the `country-label` layer on the map.\n * map.moveLayer('polygon', 'country-label');\n */\n moveLayer(id: string, beforeId?: string) {\n this.style.moveLayer(id, beforeId);\n return this._update(true);\n }\n\n // eslint-disable-next-line jsdoc/require-returns\n /**\n * Removes the layer with the given ID from the map's style.\n *\n * If no such layer exists, an `error` event is fired.\n *\n * @param {string} id id of the layer to remove\n * @fires error\n *\n * @example\n * // If a layer with ID 'state-data' exists, remove it.\n * if (map.getLayer('state-data')) map.removeLayer('state-data');\n */\n removeLayer(id: string) {\n this.style.removeLayer(id);\n return this._update(true);\n }\n\n /**\n * Returns the layer with the specified ID in the map's style.\n *\n * @param {string} id The ID of the layer to get.\n * @returns {?Object} The layer with the specified ID, or `undefined`\n * if the ID corresponds to no existing layers.\n *\n * @example\n * var stateDataLayer = map.getLayer('state-data');\n *\n * @see [Filter symbols by toggling a list](https://www.mapbox.com/mapbox-gl-js/example/filter-markers/)\n * @see [Filter symbols by text input](https://www.mapbox.com/mapbox-gl-js/example/filter-markers-by-input/)\n */\n getLayer(id: string) {\n return this.style.getLayer(id);\n }\n\n /**\n * Sets the zoom extent for the specified style layer. The zoom extent includes the\n * [minimum zoom level](https://docs.mapbox.com/mapbox-gl-js/style-spec/#layer-minzoom)\n * and [maximum zoom level](https://docs.mapbox.com/mapbox-gl-js/style-spec/#layer-maxzoom))\n * at which the layer will be rendered.\n *\n * Note: For style layers using vector sources, style layers cannot be rendered at zoom levels lower than the\n * minimum zoom level of the _source layer_ because the data does not exist at those zoom levels. If the minimum\n * zoom level of the source layer is higher than the minimum zoom level defined in the style layer, the style\n * layer will not be rendered at all zoom levels in the zoom range.\n *\n * @param {string} layerId The ID of the layer to which the zoom extent will be applied.\n * @param {number} minzoom The minimum zoom to set (0-24).\n * @param {number} maxzoom The maximum zoom to set (0-24).\n * @returns {Map} `this`\n *\n * @example\n * map.setLayerZoomRange('my-layer', 2, 5);\n *\n */\n setLayerZoomRange(layerId: string, minzoom: number, maxzoom: number) {\n this.style.setLayerZoomRange(layerId, minzoom, maxzoom);\n return this._update(true);\n }\n\n /**\n * Sets the filter for the specified style layer.\n *\n * Filters control which features a style layer renders from its source.\n * Any feature for which the filter expression evaluates to `true` will be\n * rendered on the map. Those that are false will be hidden.\n *\n * Use `setFilter` to show a subset of your source data.\n *\n * To clear the filter, pass `null` or `undefined` as the second parameter.\n *\n * @param {string} layerId The ID of the layer to which the filter will be applied.\n * @param {Array | null | undefined} filter The filter, conforming to the Mapbox Style Specification's\n * [filter definition](https://docs.mapbox.com/mapbox-gl-js/style-spec/layers/#filter). If `null` or `undefined` is provided, the function removes any existing filter from the layer.\n * @param {Object} [options] Options object.\n * @param {boolean} [options.validate=true] Whether to check if the filter conforms to the Mapbox GL Style Specification. Disabling validation is a performance optimization that should only be used if you have previously validated the values you will be passing to this function.\n * @returns {Map} `this`\n *\n * @example\n * // display only features with the 'name' property 'USA'\n * map.setFilter('my-layer', ['==', ['get', 'name'], 'USA']);\n * @example\n * // display only features with five or more 'available-spots'\n * map.setFilter('bike-docks', ['>=', ['get', 'available-spots'], 5]);\n * @example\n * // remove the filter for the 'bike-docks' style layer\n * map.setFilter('bike-docks', null);\n *\n * @see [Filter features within map view](https://www.mapbox.com/mapbox-gl-js/example/filter-features-within-map-view/)\n * @see [Highlight features containing similar data](https://www.mapbox.com/mapbox-gl-js/example/query-similar-features/)\n * @see [Create a timeline animation](https://www.mapbox.com/mapbox-gl-js/example/timeline-animation/)\n * @see Tutorial: [Show changes over time](https://docs.mapbox.com/help/tutorials/show-changes-over-time/)\n */\n setFilter(layerId: string, filter: ?FilterSpecification, options: StyleSetterOptions = {}) {\n this.style.setFilter(layerId, filter, options);\n return this._update(true);\n }\n\n /**\n * Returns the filter applied to the specified style layer.\n *\n * @param {string} layerId The ID of the style layer whose filter to get.\n * @returns {Array} The layer's filter.\n */\n getFilter(layerId: string) {\n return this.style.getFilter(layerId);\n }\n\n /**\n * Sets the value of a paint property in the specified style layer.\n *\n * @param {string} layerId The ID of the layer to set the paint property in.\n * @param {string} name The name of the paint property to set.\n * @param {*} value The value of the paint property to set.\n * Must be of a type appropriate for the property, as defined in the [Mapbox Style Specification](https://www.mapbox.com/mapbox-gl-style-spec/).\n * @param {Object} [options] Options object.\n * @param {boolean} [options.validate=true] Whether to check if `value` conforms to the Mapbox GL Style Specification. Disabling validation is a performance optimization that should only be used if you have previously validated the values you will be passing to this function.\n * @returns {Map} `this`\n * @example\n * map.setPaintProperty('my-layer', 'fill-color', '#faafee');\n * @see [Change a layer's color with buttons](https://www.mapbox.com/mapbox-gl-js/example/color-switcher/)\n * @see [Adjust a layer's opacity](https://www.mapbox.com/mapbox-gl-js/example/adjust-layer-opacity/)\n * @see [Create a draggable point](https://www.mapbox.com/mapbox-gl-js/example/drag-a-point/)\n */\n setPaintProperty(layerId: string, name: string, value: any, options: StyleSetterOptions = {}) {\n this.style.setPaintProperty(layerId, name, value, options);\n return this._update(true);\n }\n\n /**\n * Returns the value of a paint property in the specified style layer.\n *\n * @param {string} layerId The ID of the layer to get the paint property from.\n * @param {string} name The name of a paint property to get.\n * @returns {*} The value of the specified paint property.\n */\n getPaintProperty(layerId: string, name: string) {\n return this.style.getPaintProperty(layerId, name);\n }\n\n /**\n * Sets the value of a layout property in the specified style layer.\n *\n * @param {string} layerId The ID of the layer to set the layout property in.\n * @param {string} name The name of the layout property to set.\n * @param {*} value The value of the layout property. Must be of a type appropriate for the property, as defined in the [Mapbox Style Specification](https://www.mapbox.com/mapbox-gl-style-spec/).\n * @param {Object} [options] Options object.\n * @param {boolean} [options.validate=true] Whether to check if `value` conforms to the Mapbox GL Style Specification. Disabling validation is a performance optimization that should only be used if you have previously validated the values you will be passing to this function.\n * @returns {Map} `this`\n * @example\n * map.setLayoutProperty('my-layer', 'visibility', 'none');\n * @see [Show and hide layers](https://docs.mapbox.com/mapbox-gl-js/example/toggle-layers/)\n */\n setLayoutProperty(layerId: string, name: string, value: any, options: StyleSetterOptions = {}) {\n this.style.setLayoutProperty(layerId, name, value, options);\n return this._update(true);\n }\n\n /**\n * Returns the value of a layout property in the specified style layer.\n *\n * @param {string} layerId The ID of the layer to get the layout property from.\n * @param {string} name The name of the layout property to get.\n * @returns {*} The value of the specified layout property.\n */\n getLayoutProperty(layerId: string, name: string) {\n return this.style.getLayoutProperty(layerId, name);\n }\n\n /**\n * Sets the any combination of light values.\n *\n * @param light Light properties to set. Must conform to the [Mapbox Style Specification](https://www.mapbox.com/mapbox-gl-style-spec/#light).\n * @param {Object} [options] Options object.\n * @param {boolean} [options.validate=true] Whether to check if the filter conforms to the Mapbox GL Style Specification. Disabling validation is a performance optimization that should only be used if you have previously validated the values you will be passing to this function.\n * @returns {Map} `this`\n * @example\n * var layerVisibility = map.getLayoutProperty('my-layer', 'visibility');\n * @see [Show and hide layers](https://docs.mapbox.com/mapbox-gl-js/example/toggle-layers/)\n */\n setLight(light: LightSpecification, options: StyleSetterOptions = {}) {\n this._lazyInitEmptyStyle();\n this.style.setLight(light, options);\n return this._update(true);\n }\n\n /**\n * Returns the value of the light object.\n *\n * @returns {Object} light Light properties of the style.\n */\n getLight() {\n return this.style.getLight();\n }\n\n // eslint-disable-next-line jsdoc/require-returns\n /**\n * Sets the `state` of a feature.\n * A feature's `state` is a set of user-defined key-value pairs that are assigned to a feature at runtime.\n * When using this method, the `state` object is merged with any existing key-value pairs in the feature's state.\n * Features are identified by their `feature.id` attribute, which can be any number or string.\n *\n * This method can only be used with sources that have a `feature.id` attribute. The `feature.id` attribute can be defined in three ways:\n * - For vector or GeoJSON sources, including an `id` attribute in the original data file.\n * - For vector or GeoJSON sources, using the [`promoteId`](https://docs.mapbox.com/mapbox-gl-js/style-spec/sources/#vector-promoteId) option at the time the source is defined.\n * - For GeoJSON sources, using the [`generateId`](https://docs.mapbox.com/mapbox-gl-js/style-spec/sources/#geojson-generateId) option to auto-assign an `id` based on the feature's index in the source data. If you change feature data using `map.getSource('some id').setData(..)`, you may need to re-apply state taking into account updated `id` values.\n *\n * _Note: You can use the [`feature-state` expression](https://docs.mapbox.com/mapbox-gl-js/style-spec/expressions/#feature-state) to access the values in a feature's state object for the purposes of styling._\n *\n * @param {Object} feature Feature identifier. Feature objects returned from\n * {@link Map#queryRenderedFeatures} or event handlers can be used as feature identifiers.\n * @param {string | number} feature.id Unique id of the feature.\n * @param {string} feature.source The id of the vector or GeoJSON source for the feature.\n * @param {string} [feature.sourceLayer] (optional) *For vector tile sources, `sourceLayer` is required.*\n * @param {Object} state A set of key-value pairs. The values should be valid JSON types.\n *\n * @example\n * // When the mouse moves over the `my-layer` layer, update\n * // the feature state for the feature under the mouse\n * map.on('mousemove', 'my-layer', function(e) {\n * if (e.features.length > 0) {\n * map.setFeatureState({\n * source: 'my-source',\n * sourceLayer: 'my-source-layer',\n * id: e.features[0].id,\n * }, {\n * hover: true\n * });\n * }\n * });\n *\n * @see [Create a hover effect](https://docs.mapbox.com/mapbox-gl-js/example/hover-styles/)\n * @see Tutorial: [Create interactive hover effects with Mapbox GL JS](https://docs.mapbox.com/help/tutorials/create-interactive-hover-effects-with-mapbox-gl-js/)\n */\n setFeatureState(feature: { source: string; sourceLayer?: string; id: string | number; }, state: Object) {\n this.style.setFeatureState(feature, state);\n return this._update();\n }\n\n // eslint-disable-next-line jsdoc/require-returns\n /**\n * Removes the `state` of a feature, setting it back to the default behavior.\n * If only a `target.source` is specified, it will remove the state for all features from that source.\n * If `target.id` is also specified, it will remove all keys for that feature's state.\n * If `key` is also specified, it removes only that key from that feature's state.\n * Features are identified by their `feature.id` attribute, which can be any number or string.\n *\n * @param {Object} target Identifier of where to remove state. It can be a source, a feature, or a specific key of feature.\n * Feature objects returned from {@link Map#queryRenderedFeatures} or event handlers can be used as feature identifiers.\n * @param {string | number} target.id (optional) Unique id of the feature. Optional if key is not specified.\n * @param {string} target.source The id of the vector or GeoJSON source for the feature.\n * @param {string} [target.sourceLayer] (optional) *For vector tile sources, `sourceLayer` is required.*\n * @param {string} key (optional) The key in the feature state to reset.\n *\n * @example\n * // Reset the entire state object for all features\n * // in the `my-source` source\n * map.removeFeatureState({\n * source: 'my-source'\n * });\n *\n * @example\n * // When the mouse leaves the `my-layer` layer,\n * // reset the entire state object for the\n * // feature under the mouse\n * map.on('mouseleave', 'my-layer', function(e) {\n * map.removeFeatureState({\n * source: 'my-source',\n * sourceLayer: 'my-source-layer',\n * id: e.features[0].id\n * });\n * });\n *\n * @example\n * // When the mouse leaves the `my-layer` layer,\n * // reset only the `hover` key-value pair in the\n * // state for the feature under the mouse\n * map.on('mouseleave', 'my-layer', function(e) {\n * map.removeFeatureState({\n * source: 'my-source',\n * sourceLayer: 'my-source-layer',\n * id: e.features[0].id\n * }, 'hover');\n * });\n *\n */\n removeFeatureState(target: { source: string; sourceLayer?: string; id?: string | number; }, key?: string) {\n this.style.removeFeatureState(target, key);\n return this._update();\n }\n\n /**\n * Gets the `state` of a feature.\n * A feature's `state` is a set of user-defined key-value pairs that are assigned to a feature at runtime.\n * Features are identified by their `feature.id` attribute, which can be any number or string.\n *\n * _Note: To access the values in a feature's state object for the purposes of styling the feature, use the [`feature-state` expression](https://docs.mapbox.com/mapbox-gl-js/style-spec/expressions/#feature-state)._\n *\n * @param {Object} feature Feature identifier. Feature objects returned from\n * {@link Map#queryRenderedFeatures} or event handlers can be used as feature identifiers.\n * @param {string | number} feature.id Unique id of the feature.\n * @param {string} feature.source The id of the vector or GeoJSON source for the feature.\n * @param {string} [feature.sourceLayer] (optional) *For vector tile sources, `sourceLayer` is required.*\n *\n * @returns {Object} The state of the feature: a set of key-value pairs that was assigned to the feature at runtime.\n *\n * @example\n * // When the mouse moves over the `my-layer` layer,\n * // get the feature state for the feature under the mouse\n * map.on('mousemove', 'my-layer', function(e) {\n * if (e.features.length > 0) {\n * map.getFeatureState({\n * source: 'my-source',\n * sourceLayer: 'my-source-layer',\n * id: e.features[0].id\n * });\n * }\n * });\n *\n */\n getFeatureState(feature: { source: string; sourceLayer?: string; id: string | number; }): any {\n return this.style.getFeatureState(feature);\n }\n\n /**\n * Returns the map's containing HTML element.\n *\n * @returns {HTMLElement} The map's container.\n */\n getContainer() {\n return this._container;\n }\n\n /**\n * Returns the HTML element containing the map's `` element.\n *\n * If you want to add non-GL overlays to the map, you should append them to this element.\n *\n * This is the element to which event bindings for map interactivity (such as panning and zooming) are\n * attached. It will receive bubbled events from child elements such as the ``, but not from\n * map controls.\n *\n * @returns {HTMLElement} The container of the map's ``.\n * @see [Create a draggable point](https://www.mapbox.com/mapbox-gl-js/example/drag-a-point/)\n * @see [Highlight features within a bounding box](https://www.mapbox.com/mapbox-gl-js/example/using-box-queryrenderedfeatures/)\n */\n getCanvasContainer() {\n return this._canvasContainer;\n }\n\n /**\n * Returns the map's `` element.\n *\n * @returns {HTMLCanvasElement} The map's `` element.\n * @see [Measure distances](https://www.mapbox.com/mapbox-gl-js/example/measure/)\n * @see [Display a popup on hover](https://www.mapbox.com/mapbox-gl-js/example/popup-on-hover/)\n * @see [Center the map on a clicked symbol](https://www.mapbox.com/mapbox-gl-js/example/center-on-symbol/)\n */\n getCanvas() {\n return this._canvas;\n }\n\n _containerDimensions() {\n let width = 0;\n let height = 0;\n\n if (this._container) {\n width = this._container.clientWidth || 400;\n height = this._container.clientHeight || 300;\n }\n\n return [width, height];\n }\n\n _detectMissingCSS(): void {\n const computedColor = window.getComputedStyle(this._missingCSSCanary).getPropertyValue('background-color');\n if (computedColor !== 'rgb(250, 128, 114)') {\n warnOnce('This page appears to be missing CSS declarations for ' +\n 'Mapbox GL JS, which may cause the map to display incorrectly. ' +\n 'Please ensure your page includes mapbox-gl.css, as described ' +\n 'in https://www.mapbox.com/mapbox-gl-js/api/.');\n }\n }\n\n _setupContainer() {\n const container = this._container;\n container.classList.add('mapboxgl-map');\n\n const missingCSSCanary = this._missingCSSCanary = DOM.create('div', 'mapboxgl-canary', container);\n missingCSSCanary.style.visibility = 'hidden';\n this._detectMissingCSS();\n\n const canvasContainer = this._canvasContainer = DOM.create('div', 'mapboxgl-canvas-container', container);\n if (this._interactive) {\n canvasContainer.classList.add('mapboxgl-interactive');\n }\n\n this._canvas = DOM.create('canvas', 'mapboxgl-canvas', canvasContainer);\n this._canvas.addEventListener('webglcontextlost', this._contextLost, false);\n this._canvas.addEventListener('webglcontextrestored', this._contextRestored, false);\n this._canvas.setAttribute('tabindex', '0');\n this._canvas.setAttribute('aria-label', 'Map');\n this._canvas.setAttribute('role', 'region');\n\n const dimensions = this._containerDimensions();\n this._resizeCanvas(dimensions[0], dimensions[1]);\n\n const controlContainer = this._controlContainer = DOM.create('div', 'mapboxgl-control-container', container);\n const positions = this._controlPositions = {};\n ['top-left', 'top-right', 'bottom-left', 'bottom-right'].forEach((positionName) => {\n positions[positionName] = DOM.create('div', `mapboxgl-ctrl-${positionName}`, controlContainer);\n });\n\n this._container.addEventListener('scroll', this._onMapScroll, false);\n }\n\n _resizeCanvas(width: number, height: number) {\n const pixelRatio = browser.devicePixelRatio || 1;\n\n // Request the required canvas size taking the pixelratio into account.\n this._canvas.width = pixelRatio * width;\n this._canvas.height = pixelRatio * height;\n\n // Maintain the same canvas size, potentially downscaling it for HiDPI displays\n this._canvas.style.width = `${width}px`;\n this._canvas.style.height = `${height}px`;\n }\n\n _setupPainter() {\n const attributes = extend({}, isSupported.webGLContextAttributes, {\n failIfMajorPerformanceCaveat: this._failIfMajorPerformanceCaveat,\n preserveDrawingBuffer: this._preserveDrawingBuffer,\n antialias: this._antialias || false\n });\n\n const gl = this._canvas.getContext('webgl', attributes) ||\n this._canvas.getContext('experimental-webgl', attributes);\n\n if (!gl) {\n this.fire(new ErrorEvent(new Error('Failed to initialize WebGL')));\n return;\n }\n\n this.painter = new Painter(gl, this.transform);\n\n webpSupported.testSupport(gl);\n }\n\n _contextLost(event: *) {\n event.preventDefault();\n if (this._frame) {\n this._frame.cancel();\n this._frame = null;\n }\n this.fire(new Event('webglcontextlost', {originalEvent: event}));\n }\n\n _contextRestored(event: *) {\n this._setupPainter();\n this.resize();\n this._update();\n this.fire(new Event('webglcontextrestored', {originalEvent: event}));\n }\n\n _onMapScroll(event: *) {\n if (event.target !== this._container) return;\n\n // Revert any scroll which would move the canvas outside of the view\n this._container.scrollTop = 0;\n this._container.scrollLeft = 0;\n return false;\n }\n\n /**\n * Returns a Boolean indicating whether the map is fully loaded.\n *\n * Returns `false` if the style is not yet fully loaded,\n * or if there has been a change to the sources or style that\n * has not yet fully loaded.\n *\n * @returns {boolean} A Boolean indicating whether the map is fully loaded.\n */\n loaded() {\n return !this._styleDirty && !this._sourcesDirty && !!this.style && this.style.loaded();\n }\n\n /**\n * Update this map's style and sources, and re-render the map.\n *\n * @param {boolean} updateStyle mark the map's style for reprocessing as\n * well as its sources\n * @returns {Map} this\n * @private\n */\n _update(updateStyle?: boolean) {\n if (!this.style) return this;\n\n this._styleDirty = this._styleDirty || updateStyle;\n this._sourcesDirty = true;\n this.triggerRepaint();\n\n return this;\n }\n\n /**\n * Request that the given callback be executed during the next render\n * frame. Schedule a render frame if one is not already scheduled.\n * @returns An id that can be used to cancel the callback\n * @private\n */\n _requestRenderFrame(callback: () => void): TaskID {\n this._update();\n return this._renderTaskQueue.add(callback);\n }\n\n _cancelRenderFrame(id: TaskID) {\n this._renderTaskQueue.remove(id);\n }\n\n /**\n * Call when a (re-)render of the map is required:\n * - The style has changed (`setPaintProperty()`, etc.)\n * - Source data has changed (e.g. tiles have finished loading)\n * - The map has is moving (or just finished moving)\n * - A transition is in progress\n *\n * @param {number} paintStartTimeStamp The time when the animation frame began executing.\n *\n * @returns {Map} this\n * @private\n */\n _render(paintStartTimeStamp: number) {\n let gpuTimer, frameStartTime = 0;\n const extTimerQuery = this.painter.context.extTimerQuery;\n if (this.listens('gpu-timing-frame')) {\n gpuTimer = extTimerQuery.createQueryEXT();\n extTimerQuery.beginQueryEXT(extTimerQuery.TIME_ELAPSED_EXT, gpuTimer);\n frameStartTime = browser.now();\n }\n\n // A custom layer may have used the context asynchronously. Mark the state as dirty.\n this.painter.context.setDirty();\n this.painter.setBaseState();\n\n this._renderTaskQueue.run(paintStartTimeStamp);\n // A task queue callback may have fired a user event which may have removed the map\n if (this._removed) return;\n\n let crossFading = false;\n\n // If the style has changed, the map is being zoomed, or a transition or fade is in progress:\n // - Apply style changes (in a batch)\n // - Recalculate paint properties.\n if (this.style && this._styleDirty) {\n this._styleDirty = false;\n\n const zoom = this.transform.zoom;\n const now = browser.now();\n this.style.zoomHistory.update(zoom, now);\n\n const parameters = new EvaluationParameters(zoom, {\n now,\n fadeDuration: this._fadeDuration,\n zoomHistory: this.style.zoomHistory,\n transition: this.style.getTransition()\n });\n\n const factor = parameters.crossFadingFactor();\n if (factor !== 1 || factor !== this._crossFadingFactor) {\n crossFading = true;\n this._crossFadingFactor = factor;\n }\n\n this.style.update(parameters);\n }\n\n // If we are in _render for any reason other than an in-progress paint\n // transition, update source caches to check for and load any tiles we\n // need for the current transform\n if (this.style && this._sourcesDirty) {\n this._sourcesDirty = false;\n this.style._updateSources(this.transform);\n }\n\n this._placementDirty = this.style && this.style._updatePlacement(this.painter.transform, this.showCollisionBoxes, this._fadeDuration, this._crossSourceCollisions);\n\n // Actually draw\n this.painter.render(this.style, {\n showTileBoundaries: this.showTileBoundaries,\n showOverdrawInspector: this._showOverdrawInspector,\n rotating: this.isRotating(),\n zooming: this.isZooming(),\n moving: this.isMoving(),\n fadeDuration: this._fadeDuration,\n showPadding: this.showPadding,\n gpuTiming: !!this.listens('gpu-timing-layer'),\n });\n\n this.fire(new Event('render'));\n\n if (this.loaded() && !this._loaded) {\n this._loaded = true;\n PerformanceUtils.mark(PerformanceMarkers.load);\n this.fire(new Event('load'));\n }\n\n if (this.style && (this.style.hasTransitions() || crossFading)) {\n this._styleDirty = true;\n }\n\n if (this.style && !this._placementDirty) {\n // Since no fade operations are in progress, we can release\n // all tiles held for fading. If we didn't do this, the tiles\n // would just sit in the SourceCaches until the next render\n this.style._releaseSymbolFadeTiles();\n }\n\n if (this.listens('gpu-timing-frame')) {\n const renderCPUTime = browser.now() - frameStartTime;\n extTimerQuery.endQueryEXT(extTimerQuery.TIME_ELAPSED_EXT, gpuTimer);\n setTimeout(() => {\n const renderGPUTime = extTimerQuery.getQueryObjectEXT(gpuTimer, extTimerQuery.QUERY_RESULT_EXT) / (1000 * 1000);\n extTimerQuery.deleteQueryEXT(gpuTimer);\n this.fire(new Event('gpu-timing-frame', {\n cpuTime: renderCPUTime,\n gpuTime: renderGPUTime\n }));\n }, 50); // Wait 50ms to give time for all GPU calls to finish before querying\n }\n\n if (this.listens('gpu-timing-layer')) {\n // Resetting the Painter's per-layer timing queries here allows us to isolate\n // the queries to individual frames.\n const frameLayerQueries = this.painter.collectGpuTimers();\n\n setTimeout(() => {\n const renderedLayerTimes = this.painter.queryGpuTimers(frameLayerQueries);\n\n this.fire(new Event('gpu-timing-layer', {\n layerTimes: renderedLayerTimes\n }));\n }, 50); // Wait 50ms to give time for all GPU calls to finish before querying\n }\n\n // Schedule another render frame if it's needed.\n //\n // Even though `_styleDirty` and `_sourcesDirty` are reset in this\n // method, synchronous events fired during Style#update or\n // Style#_updateSources could have caused them to be set again.\n const somethingDirty = this._sourcesDirty || this._styleDirty || this._placementDirty;\n if (somethingDirty || this._repaint) {\n this.triggerRepaint();\n } else if (!this.isMoving() && this.loaded()) {\n this.fire(new Event('idle'));\n }\n\n if (this._loaded && !this._fullyLoaded && !somethingDirty) {\n this._fullyLoaded = true;\n PerformanceUtils.mark(PerformanceMarkers.fullLoad);\n }\n\n return this;\n }\n\n /**\n * Clean up and release all internal resources associated with this map.\n *\n * This includes DOM elements, event bindings, web workers, and WebGL resources.\n *\n * Use this method when you are done using the map and wish to ensure that it no\n * longer consumes browser resources. Afterwards, you must not call any other\n * methods on the map.\n */\n remove() {\n if (this._hash) this._hash.remove();\n\n for (const control of this._controls) control.onRemove(this);\n this._controls = [];\n\n if (this._frame) {\n this._frame.cancel();\n this._frame = null;\n }\n this._renderTaskQueue.clear();\n this.painter.destroy();\n this.handlers.destroy();\n delete this.handlers;\n this.setStyle(null);\n if (typeof window !== 'undefined') {\n window.removeEventListener('resize', this._onWindowResize, false);\n window.removeEventListener('orientationchange', this._onWindowResize, false);\n window.removeEventListener('online', this._onWindowOnline, false);\n }\n\n const extension = this.painter.context.gl.getExtension('WEBGL_lose_context');\n if (extension) extension.loseContext();\n removeNode(this._canvasContainer);\n removeNode(this._controlContainer);\n removeNode(this._missingCSSCanary);\n this._container.classList.remove('mapboxgl-map');\n\n PerformanceUtils.clearMetrics();\n\n this._removed = true;\n this.fire(new Event('remove'));\n }\n\n /**\n * Trigger the rendering of a single frame. Use this method with custom layers to\n * repaint the map when the layer changes. Calling this multiple times before the\n * next frame is rendered will still result in only a single frame being rendered.\n * @example\n * map.triggerRepaint();\n * @see [Add a 3D model](https://docs.mapbox.com/mapbox-gl-js/example/add-3d-model/)\n * @see [Add an animated icon to the map](https://docs.mapbox.com/mapbox-gl-js/example/add-image-animated/)\n */\n triggerRepaint() {\n if (this.style && !this._frame) {\n this._frame = browser.frame((paintStartTimeStamp: number) => {\n PerformanceUtils.frame(paintStartTimeStamp);\n this._frame = null;\n this._render(paintStartTimeStamp);\n });\n }\n }\n\n _onWindowOnline() {\n this._update();\n }\n\n _onWindowResize(event: Event) {\n if (this._trackResize) {\n this.resize({originalEvent: event})._update();\n }\n }\n\n /**\n * Gets and sets a Boolean indicating whether the map will render an outline\n * around each tile and the tile ID. These tile boundaries are useful for\n * debugging.\n *\n * The uncompressed file size of the first vector source is drawn in the top left\n * corner of each tile, next to the tile ID.\n *\n * @name showTileBoundaries\n * @type {boolean}\n * @instance\n * @memberof Map\n * @example\n * map.showTileBoundaries = true;\n */\n get showTileBoundaries(): boolean { return !!this._showTileBoundaries; }\n set showTileBoundaries(value: boolean) {\n if (this._showTileBoundaries === value) return;\n this._showTileBoundaries = value;\n this._update();\n }\n\n /**\n * Gets and sets a Boolean indicating whether the map will visualize\n * the padding offsets.\n *\n * @name showPadding\n * @type {boolean}\n * @instance\n * @memberof Map\n */\n get showPadding(): boolean { return !!this._showPadding; }\n set showPadding(value: boolean) {\n if (this._showPadding === value) return;\n this._showPadding = value;\n this._update();\n }\n\n /**\n * Gets and sets a Boolean indicating whether the map will render boxes\n * around all symbols in the data source, revealing which symbols\n * were rendered or which were hidden due to collisions.\n * This information is useful for debugging.\n *\n * @name showCollisionBoxes\n * @type {boolean}\n * @instance\n * @memberof Map\n */\n get showCollisionBoxes(): boolean { return !!this._showCollisionBoxes; }\n set showCollisionBoxes(value: boolean) {\n if (this._showCollisionBoxes === value) return;\n this._showCollisionBoxes = value;\n if (value) {\n // When we turn collision boxes on we have to generate them for existing tiles\n // When we turn them off, there's no cost to leaving existing boxes in place\n this.style._generateCollisionBoxes();\n } else {\n // Otherwise, call an update to remove collision boxes\n this._update();\n }\n }\n\n /*\n * Gets and sets a Boolean indicating whether the map should color-code\n * each fragment to show how many times it has been shaded.\n * White fragments have been shaded 8 or more times.\n * Black fragments have been shaded 0 times.\n * This information is useful for debugging.\n *\n * @name showOverdraw\n * @type {boolean}\n * @instance\n * @memberof Map\n */\n get showOverdrawInspector(): boolean { return !!this._showOverdrawInspector; }\n set showOverdrawInspector(value: boolean) {\n if (this._showOverdrawInspector === value) return;\n this._showOverdrawInspector = value;\n this._update();\n }\n\n /**\n * Gets and sets a Boolean indicating whether the map will\n * continuously repaint. This information is useful for analyzing performance.\n *\n * @name repaint\n * @type {boolean}\n * @instance\n * @memberof Map\n */\n get repaint(): boolean { return !!this._repaint; }\n set repaint(value: boolean) {\n if (this._repaint !== value) {\n this._repaint = value;\n this.triggerRepaint();\n }\n }\n // show vertices\n get vertices(): boolean { return !!this._vertices; }\n set vertices(value: boolean) { this._vertices = value; this._update(); }\n\n // for cache browser tests\n _setCacheLimits(limit: number, checkThreshold: number) {\n setCacheLimits(limit, checkThreshold);\n }\n\n /**\n * The version of Mapbox GL JS in use as specified in package.json, CHANGELOG.md, and the GitHub release.\n *\n * @name version\n * @instance\n * @memberof Map\n * @var {string} version\n */\n\n get version(): string { return version; }\n}\n\nexport default Map;\n\nfunction removeNode(node) {\n if (node.parentNode) {\n node.parentNode.removeChild(node);\n }\n}\n\n/**\n * Interface for interactive controls added to the map. This is a\n * specification for implementers to model: it is not\n * an exported method or class.\n *\n * Controls must implement `onAdd` and `onRemove`, and must own an\n * element, which is often a `div` element. To use Mapbox GL JS's\n * default control styling, add the `mapboxgl-ctrl` class to your control's\n * node.\n *\n * @interface IControl\n * @example\n * // Control implemented as ES6 class\n * class HelloWorldControl {\n * onAdd(map) {\n * this._map = map;\n * this._container = document.createElement('div');\n * this._container.className = 'mapboxgl-ctrl';\n * this._container.textContent = 'Hello, world';\n * return this._container;\n * }\n *\n * onRemove() {\n * this._container.parentNode.removeChild(this._container);\n * this._map = undefined;\n * }\n * }\n *\n * // Control implemented as ES5 prototypical class\n * function HelloWorldControl() { }\n *\n * HelloWorldControl.prototype.onAdd = function(map) {\n * this._map = map;\n * this._container = document.createElement('div');\n * this._container.className = 'mapboxgl-ctrl';\n * this._container.textContent = 'Hello, world';\n * return this._container;\n * };\n *\n * HelloWorldControl.prototype.onRemove = function () {\n * this._container.parentNode.removeChild(this._container);\n * this._map = undefined;\n * };\n */\n\n/**\n * Register a control on the map and give it a chance to register event listeners\n * and resources. This method is called by {@link Map#addControl}\n * internally.\n *\n * @function\n * @memberof IControl\n * @instance\n * @name onAdd\n * @param {Map} map the Map this control will be added to\n * @returns {HTMLElement} The control's container element. This should\n * be created by the control and returned by onAdd without being attached\n * to the DOM: the map will insert the control's element into the DOM\n * as necessary.\n */\n\n/**\n * Unregister a control on the map and give it a chance to detach event listeners\n * and resources. This method is called by {@link Map#removeControl}\n * internally.\n *\n * @function\n * @memberof IControl\n * @instance\n * @name onRemove\n * @param {Map} map the Map this control will be removed from\n * @returns {undefined} there is no required return value for this method\n */\n\n/**\n * Optionally provide a default position for this control. If this method\n * is implemented and {@link Map#addControl} is called without the `position`\n * parameter, the value returned by getDefaultPosition will be used as the\n * control's position.\n *\n * @function\n * @memberof IControl\n * @instance\n * @name getDefaultPosition\n * @returns {string} a control position, one of the values valid in addControl.\n */\n\n/**\n * A [`Point` geometry](https://github.com/mapbox/point-geometry) object, which has\n * `x` and `y` properties representing screen coordinates in pixels.\n *\n * @typedef {Object} Point\n * @example\n * var point = new mapboxgl.Point(-77, 38);\n */\n\n/**\n * A {@link Point} or an array of two numbers representing `x` and `y` screen coordinates in pixels.\n *\n * @typedef {(Point | Array)} PointLike\n * @example\n * var p1 = new mapboxgl.Point(-77, 38); // a PointLike which is a Point\n * var p2 = [-77, 38]; // a PointLike which is an array of two numbers\n */\n", "// @flow\n\nimport DOM from '../../util/dom';\nimport {extend, bindAll} from '../../util/util';\nimport {MouseRotateHandler, MousePitchHandler} from '../handler/mouse';\nimport window from '../../util/window';\n\nimport type Map from '../map';\n\ntype Options = {\n showCompass?: boolean,\n showZoom?: boolean,\n visualizePitch?: boolean\n};\n\nconst defaultOptions: Options = {\n showCompass: true,\n showZoom: true,\n visualizePitch: false\n};\n\n/**\n * A `NavigationControl` control contains zoom buttons and a compass.\n *\n * @implements {IControl}\n * @param {Object} [options]\n * @param {Boolean} [options.showCompass=true] If `true` the compass button is included.\n * @param {Boolean} [options.showZoom=true] If `true` the zoom-in and zoom-out buttons are included.\n * @param {Boolean} [options.visualizePitch=false] If `true` the pitch is visualized by rotating X-axis of compass.\n * @example\n * var nav = new mapboxgl.NavigationControl();\n * map.addControl(nav, 'top-left');\n * @see [Display map navigation controls](https://www.mapbox.com/mapbox-gl-js/example/navigation/)\n * @see [Add a third party vector tile source](https://www.mapbox.com/mapbox-gl-js/example/third-party/)\n */\nclass NavigationControl {\n _map: Map;\n options: Options;\n _container: HTMLElement;\n _zoomInButton: HTMLButtonElement;\n _zoomOutButton: HTMLButtonElement;\n _compass: HTMLButtonElement;\n _compassIcon: HTMLElement;\n _handler: MouseRotateWrapper;\n\n constructor(options: Options) {\n this.options = extend({}, defaultOptions, options);\n\n this._container = DOM.create('div', 'mapboxgl-ctrl mapboxgl-ctrl-group');\n this._container.addEventListener('contextmenu', (e) => e.preventDefault());\n\n if (this.options.showZoom) {\n bindAll([\n '_setButtonTitle',\n '_updateZoomButtons'\n ], this);\n this._zoomInButton = this._createButton('mapboxgl-ctrl-zoom-in', (e) => this._map.zoomIn({}, {originalEvent: e}));\n DOM.create('span', `mapboxgl-ctrl-icon`, this._zoomInButton).setAttribute('aria-hidden', true);\n this._zoomOutButton = this._createButton('mapboxgl-ctrl-zoom-out', (e) => this._map.zoomOut({}, {originalEvent: e}));\n DOM.create('span', `mapboxgl-ctrl-icon`, this._zoomOutButton).setAttribute('aria-hidden', true);\n }\n if (this.options.showCompass) {\n bindAll([\n '_rotateCompassArrow'\n ], this);\n this._compass = this._createButton('mapboxgl-ctrl-compass', (e) => {\n if (this.options.visualizePitch) {\n this._map.resetNorthPitch({}, {originalEvent: e});\n } else {\n this._map.resetNorth({}, {originalEvent: e});\n }\n });\n this._compassIcon = DOM.create('span', 'mapboxgl-ctrl-icon', this._compass);\n this._compassIcon.setAttribute('aria-hidden', true);\n }\n }\n\n _updateZoomButtons() {\n const zoom = this._map.getZoom();\n const isMax = zoom === this._map.getMaxZoom();\n const isMin = zoom === this._map.getMinZoom();\n this._zoomInButton.disabled = isMax;\n this._zoomOutButton.disabled = isMin;\n this._zoomInButton.setAttribute('aria-disabled', isMax.toString());\n this._zoomOutButton.setAttribute('aria-disabled', isMin.toString());\n }\n\n _rotateCompassArrow() {\n const rotate = this.options.visualizePitch ?\n `scale(${1 / Math.pow(Math.cos(this._map.transform.pitch * (Math.PI / 180)), 0.5)}) rotateX(${this._map.transform.pitch}deg) rotateZ(${this._map.transform.angle * (180 / Math.PI)}deg)` :\n `rotate(${this._map.transform.angle * (180 / Math.PI)}deg)`;\n\n this._compassIcon.style.transform = rotate;\n }\n\n onAdd(map: Map) {\n this._map = map;\n if (this.options.showZoom) {\n this._setButtonTitle(this._zoomInButton, 'ZoomIn');\n this._setButtonTitle(this._zoomOutButton, 'ZoomOut');\n this._map.on('zoom', this._updateZoomButtons);\n this._updateZoomButtons();\n }\n if (this.options.showCompass) {\n this._setButtonTitle(this._compass, 'ResetBearing');\n if (this.options.visualizePitch) {\n this._map.on('pitch', this._rotateCompassArrow);\n }\n this._map.on('rotate', this._rotateCompassArrow);\n this._rotateCompassArrow();\n this._handler = new MouseRotateWrapper(this._map, this._compass, this.options.visualizePitch);\n }\n return this._container;\n }\n\n onRemove() {\n DOM.remove(this._container);\n if (this.options.showZoom) {\n this._map.off('zoom', this._updateZoomButtons);\n }\n if (this.options.showCompass) {\n if (this.options.visualizePitch) {\n this._map.off('pitch', this._rotateCompassArrow);\n }\n this._map.off('rotate', this._rotateCompassArrow);\n this._handler.off();\n delete this._handler;\n }\n\n delete this._map;\n }\n\n _createButton(className: string, fn: () => mixed) {\n const a = DOM.create('button', className, this._container);\n a.type = 'button';\n a.addEventListener('click', fn);\n return a;\n }\n\n _setButtonTitle(button: HTMLButtonElement, title: string) {\n const str = this._map._getUIString(`NavigationControl.${title}`);\n button.title = str;\n button.setAttribute('aria-label', str);\n }\n}\n\nclass MouseRotateWrapper {\n\n map: Map;\n _clickTolerance: number;\n element: HTMLElement;\n mouseRotate: MouseRotateHandler;\n mousePitch: MousePitchHandler;\n _startPos: Point;\n _lastPos: Point;\n\n constructor(map: Map, element: HTMLElement, pitch?: boolean = false) {\n this._clickTolerance = 10;\n this.element = element;\n this.mouseRotate = new MouseRotateHandler({clickTolerance: map.dragRotate._mouseRotate._clickTolerance});\n this.map = map;\n if (pitch) this.mousePitch = new MousePitchHandler({clickTolerance: map.dragRotate._mousePitch._clickTolerance});\n\n bindAll(['mousedown', 'mousemove', 'mouseup', 'touchstart', 'touchmove', 'touchend', 'reset'], this);\n DOM.addEventListener(element, 'mousedown', this.mousedown);\n DOM.addEventListener(element, 'touchstart', this.touchstart, {passive: false});\n DOM.addEventListener(element, 'touchmove', this.touchmove);\n DOM.addEventListener(element, 'touchend', this.touchend);\n DOM.addEventListener(element, 'touchcancel', this.reset);\n }\n\n down(e: MouseEvent, point: Point) {\n this.mouseRotate.mousedown(e, point);\n if (this.mousePitch) this.mousePitch.mousedown(e, point);\n DOM.disableDrag();\n }\n\n move(e: MouseEvent, point: Point) {\n const map = this.map;\n const r = this.mouseRotate.mousemoveWindow(e, point);\n if (r && r.bearingDelta) map.setBearing(map.getBearing() + r.bearingDelta);\n if (this.mousePitch) {\n const p = this.mousePitch.mousemoveWindow(e, point);\n if (p && p.pitchDelta) map.setPitch(map.getPitch() + p.pitchDelta);\n }\n }\n\n off() {\n const element = this.element;\n DOM.removeEventListener(element, 'mousedown', this.mousedown);\n DOM.removeEventListener(element, 'touchstart', this.touchstart, {passive: false});\n DOM.removeEventListener(element, 'touchmove', this.touchmove);\n DOM.removeEventListener(element, 'touchend', this.touchend);\n DOM.removeEventListener(element, 'touchcancel', this.reset);\n this.offTemp();\n }\n\n offTemp() {\n DOM.enableDrag();\n DOM.removeEventListener(window, 'mousemove', this.mousemove);\n DOM.removeEventListener(window, 'mouseup', this.mouseup);\n }\n\n mousedown(e: MouseEvent) {\n this.down(extend({}, e, {ctrlKey: true, preventDefault: () => e.preventDefault()}), DOM.mousePos(this.element, e));\n DOM.addEventListener(window, 'mousemove', this.mousemove);\n DOM.addEventListener(window, 'mouseup', this.mouseup);\n }\n\n mousemove(e: MouseEvent) {\n this.move(e, DOM.mousePos(this.element, e));\n }\n\n mouseup(e: MouseEvent) {\n this.mouseRotate.mouseupWindow(e);\n if (this.mousePitch) this.mousePitch.mouseupWindow(e);\n this.offTemp();\n }\n\n touchstart(e: TouchEvent) {\n if (e.targetTouches.length !== 1) {\n this.reset();\n } else {\n this._startPos = this._lastPos = DOM.touchPos(this.element, e.targetTouches)[0];\n this.down((({type: 'mousedown', button: 0, ctrlKey: true, preventDefault: () => e.preventDefault()}: any): MouseEvent), this._startPos);\n }\n }\n\n touchmove(e: TouchEvent) {\n if (e.targetTouches.length !== 1) {\n this.reset();\n } else {\n this._lastPos = DOM.touchPos(this.element, e.targetTouches)[0];\n this.move((({preventDefault: () => e.preventDefault()}: any): MouseEvent), this._lastPos);\n }\n }\n\n touchend(e: TouchEvent) {\n if (e.targetTouches.length === 0 &&\n this._startPos &&\n this._lastPos &&\n this._startPos.dist(this._lastPos) < this._clickTolerance) {\n this.element.click();\n }\n this.reset();\n }\n\n reset() {\n this.mouseRotate.reset();\n if (this.mousePitch) this.mousePitch.reset();\n delete this._startPos;\n delete this._lastPos;\n this.offTemp();\n }\n}\n\nexport default NavigationControl;\n", "// @flow\n\nimport LngLat from '../geo/lng_lat';\n\nimport type Point from '@mapbox/point-geometry';\nimport type Transform from '../geo/transform';\n\n/**\n * Given a LngLat, prior projected position, and a transform, return a new LngLat shifted\n * n × 360° east or west for some n ≥ 0 such that:\n *\n * * the projected location of the result is on screen, if possible, and secondarily:\n * * the difference between the projected location of the result and the prior position\n * is minimized.\n *\n * The object is to preserve perceived object constancy for Popups and Markers as much as\n * possible; they should avoid shifting large distances across the screen, even when the\n * map center changes by ±360° due to automatic wrapping, and when about to go off screen,\n * should wrap just enough to avoid doing so.\n *\n * @private\n */\nexport default function(lngLat: LngLat, priorPos: ?Point, transform: Transform): LngLat {\n lngLat = new LngLat(lngLat.lng, lngLat.lat);\n\n // First, try shifting one world in either direction, and see if either is closer to the\n // prior position. This preserves object constancy when the map center is auto-wrapped\n // during animations.\n if (priorPos) {\n const left = new LngLat(lngLat.lng - 360, lngLat.lat);\n const right = new LngLat(lngLat.lng + 360, lngLat.lat);\n const delta = transform.locationPoint(lngLat).distSqr(priorPos);\n if (transform.locationPoint(left).distSqr(priorPos) < delta) {\n lngLat = left;\n } else if (transform.locationPoint(right).distSqr(priorPos) < delta) {\n lngLat = right;\n }\n }\n\n // Second, wrap toward the center until the new position is on screen, or we can't get\n // any closer.\n while (Math.abs(lngLat.lng - transform.center.lng) > 180) {\n const pos = transform.locationPoint(lngLat);\n if (pos.x >= 0 && pos.y >= 0 && pos.x <= transform.width && pos.y <= transform.height) {\n break;\n }\n if (lngLat.lng > transform.center.lng) {\n lngLat.lng -= 360;\n } else {\n lngLat.lng += 360;\n }\n }\n\n return lngLat;\n}\n", "// @flow\n\nexport type Anchor =\n | 'center'\n | 'top'\n | 'bottom'\n | 'left'\n | 'right'\n | 'top-left'\n | 'top-right'\n | 'bottom-left'\n | 'bottom-right';\n\nexport const anchorTranslate: {[_: Anchor]: string} = {\n 'center': 'translate(-50%,-50%)',\n 'top': 'translate(-50%,0)',\n 'top-left': 'translate(0,0)',\n 'top-right': 'translate(-100%,0)',\n 'bottom': 'translate(-50%,-100%)',\n 'bottom-left': 'translate(0,-100%)',\n 'bottom-right': 'translate(-100%,-100%)',\n 'left': 'translate(0,-50%)',\n 'right': 'translate(-100%,-50%)'\n};\n\nexport function applyAnchorClass(element: HTMLElement, anchor: Anchor, prefix: string) {\n const classList = element.classList;\n for (const key in anchorTranslate) {\n classList.remove(`mapboxgl-${prefix}-anchor-${key}`);\n }\n classList.add(`mapboxgl-${prefix}-anchor-${anchor}`);\n}\n", "// @flow\n\nimport DOM from '../util/dom';\nimport window from '../util/window';\nimport LngLat from '../geo/lng_lat';\nimport Point from '@mapbox/point-geometry';\nimport smartWrap from '../util/smart_wrap';\nimport {bindAll, extend} from '../util/util';\nimport {type Anchor, anchorTranslate, applyAnchorClass} from './anchor';\nimport {Event, Evented} from '../util/evented';\nimport type Map from './map';\nimport type Popup from './popup';\nimport type {LngLatLike} from \"../geo/lng_lat\";\nimport type {MapMouseEvent, MapTouchEvent} from './events';\nimport type {PointLike} from '@mapbox/point-geometry';\n\ntype Options = {\n element?: HTMLElement,\n offset?: PointLike,\n anchor?: Anchor,\n color?: string,\n scale?: number,\n draggable?: boolean,\n clickTolerance?: number,\n rotation?: number,\n rotationAlignment?: string,\n pitchAlignment?: string\n};\n\n/**\n * Creates a marker component\n * @param {Object} [options]\n * @param {HTMLElement} [options.element] DOM element to use as a marker. The default is a light blue, droplet-shaped SVG marker.\n * @param {string} [options.anchor='center'] A string indicating the part of the Marker that should be positioned closest to the coordinate set via {@link Marker#setLngLat}.\n * Options are `'center'`, `'top'`, `'bottom'`, `'left'`, `'right'`, `'top-left'`, `'top-right'`, `'bottom-left'`, and `'bottom-right'`.\n * @param {PointLike} [options.offset] The offset in pixels as a {@link PointLike} object to apply relative to the element's center. Negatives indicate left and up.\n * @param {string} [options.color='#3FB1CE'] The color to use for the default marker if options.element is not provided. The default is light blue.\n * @param {number} [options.scale=1] The scale to use for the default marker if options.element is not provided. The default scale corresponds to a height of `41px` and a width of `27px`.\n * @param {boolean} [options.draggable=false] A boolean indicating whether or not a marker is able to be dragged to a new position on the map.\n * @param {number} [options.clickTolerance=0] The max number of pixels a user can shift the mouse pointer during a click on the marker for it to be considered a valid click (as opposed to a marker drag). The default is to inherit map's clickTolerance.\n * @param {number} [options.rotation=0] The rotation angle of the marker in degrees, relative to its respective `rotationAlignment` setting. A positive value will rotate the marker clockwise.\n * @param {string} [options.pitchAlignment='auto'] `map` aligns the `Marker` to the plane of the map. `viewport` aligns the `Marker` to the plane of the viewport. `auto` automatically matches the value of `rotationAlignment`.\n * @param {string} [options.rotationAlignment='auto'] `map` aligns the `Marker`'s rotation relative to the map, maintaining a bearing as the map rotates. `viewport` aligns the `Marker`'s rotation relative to the viewport, agnostic to map rotations. `auto` is equivalent to `viewport`.\n * @example\n * var marker = new mapboxgl.Marker()\n * .setLngLat([30.5, 50.5])\n * .addTo(map);\n * @example\n * // Set options\n * var marker = new mapboxgl.Marker({\n * color: \"#FFFFFF\",\n * draggable: true\n * }).setLngLat([30.5, 50.5])\n * .addTo(map);\n * @see [Add custom icons with Markers](https://www.mapbox.com/mapbox-gl-js/example/custom-marker-icons/)\n * @see [Create a draggable Marker](https://www.mapbox.com/mapbox-gl-js/example/drag-a-marker/)\n */\nexport default class Marker extends Evented {\n _map: Map;\n _anchor: Anchor;\n _offset: Point;\n _element: HTMLElement;\n _popup: ?Popup;\n _lngLat: LngLat;\n _pos: ?Point;\n _color: ?string;\n _scale: number;\n _defaultMarker: boolean;\n _draggable: boolean;\n _clickTolerance: number;\n _isDragging: boolean;\n _state: 'inactive' | 'pending' | 'active'; // used for handling drag events\n _positionDelta: ?Point;\n _pointerdownPos: ?Point;\n _rotation: number;\n _pitchAlignment: string;\n _rotationAlignment: string;\n _originalTabIndex: ?string; // original tabindex of _element\n\n constructor(options?: Options, legacyOptions?: Options) {\n super();\n // For backward compatibility -- the constructor used to accept the element as a\n // required first argument, before it was made optional.\n if (options instanceof window.HTMLElement || legacyOptions) {\n options = extend({element: options}, legacyOptions);\n }\n\n bindAll([\n '_update',\n '_onMove',\n '_onUp',\n '_addDragHandler',\n '_onMapClick',\n '_onKeyPress'\n ], this);\n\n this._anchor = options && options.anchor || 'center';\n this._color = options && options.color || '#3FB1CE';\n this._scale = options && options.scale || 1;\n this._draggable = options && options.draggable || false;\n this._clickTolerance = options && options.clickTolerance || 0;\n this._isDragging = false;\n this._state = 'inactive';\n this._rotation = options && options.rotation || 0;\n this._rotationAlignment = options && options.rotationAlignment || 'auto';\n this._pitchAlignment = options && options.pitchAlignment && options.pitchAlignment !== 'auto' ? options.pitchAlignment : this._rotationAlignment;\n\n if (!options || !options.element) {\n this._defaultMarker = true;\n this._element = DOM.create('div');\n this._element.setAttribute('aria-label', 'Map marker');\n\n // create default map marker SVG\n const svg = DOM.createNS('http://www.w3.org/2000/svg', 'svg');\n const defaultHeight = 41;\n const defaultWidth = 27;\n svg.setAttributeNS(null, 'display', 'block');\n svg.setAttributeNS(null, 'height', `${defaultHeight}px`);\n svg.setAttributeNS(null, 'width', `${defaultWidth}px`);\n svg.setAttributeNS(null, 'viewBox', `0 0 ${defaultWidth} ${defaultHeight}`);\n\n const markerLarge = DOM.createNS('http://www.w3.org/2000/svg', 'g');\n markerLarge.setAttributeNS(null, 'stroke', 'none');\n markerLarge.setAttributeNS(null, 'stroke-width', '1');\n markerLarge.setAttributeNS(null, 'fill', 'none');\n markerLarge.setAttributeNS(null, 'fill-rule', 'evenodd');\n\n const page1 = DOM.createNS('http://www.w3.org/2000/svg', 'g');\n page1.setAttributeNS(null, 'fill-rule', 'nonzero');\n\n const shadow = DOM.createNS('http://www.w3.org/2000/svg', 'g');\n shadow.setAttributeNS(null, 'transform', 'translate(3.0, 29.0)');\n shadow.setAttributeNS(null, 'fill', '#000000');\n\n const ellipses = [\n {'rx': '10.5', 'ry': '5.25002273'},\n {'rx': '10.5', 'ry': '5.25002273'},\n {'rx': '9.5', 'ry': '4.77275007'},\n {'rx': '8.5', 'ry': '4.29549936'},\n {'rx': '7.5', 'ry': '3.81822308'},\n {'rx': '6.5', 'ry': '3.34094679'},\n {'rx': '5.5', 'ry': '2.86367051'},\n {'rx': '4.5', 'ry': '2.38636864'}\n ];\n\n for (const data of ellipses) {\n const ellipse = DOM.createNS('http://www.w3.org/2000/svg', 'ellipse');\n ellipse.setAttributeNS(null, 'opacity', '0.04');\n ellipse.setAttributeNS(null, 'cx', '10.5');\n ellipse.setAttributeNS(null, 'cy', '5.80029008');\n ellipse.setAttributeNS(null, 'rx', data['rx']);\n ellipse.setAttributeNS(null, 'ry', data['ry']);\n shadow.appendChild(ellipse);\n }\n\n const background = DOM.createNS('http://www.w3.org/2000/svg', 'g');\n background.setAttributeNS(null, 'fill', this._color);\n\n const bgPath = DOM.createNS('http://www.w3.org/2000/svg', 'path');\n bgPath.setAttributeNS(null, 'd', 'M27,13.5 C27,19.074644 20.250001,27.000002 14.75,34.500002 C14.016665,35.500004 12.983335,35.500004 12.25,34.500002 C6.7499993,27.000002 0,19.222562 0,13.5 C0,6.0441559 6.0441559,0 13.5,0 C20.955844,0 27,6.0441559 27,13.5 Z');\n\n background.appendChild(bgPath);\n\n const border = DOM.createNS('http://www.w3.org/2000/svg', 'g');\n border.setAttributeNS(null, 'opacity', '0.25');\n border.setAttributeNS(null, 'fill', '#000000');\n\n const borderPath = DOM.createNS('http://www.w3.org/2000/svg', 'path');\n borderPath.setAttributeNS(null, 'd', 'M13.5,0 C6.0441559,0 0,6.0441559 0,13.5 C0,19.222562 6.7499993,27 12.25,34.5 C13,35.522727 14.016664,35.500004 14.75,34.5 C20.250001,27 27,19.074644 27,13.5 C27,6.0441559 20.955844,0 13.5,0 Z M13.5,1 C20.415404,1 26,6.584596 26,13.5 C26,15.898657 24.495584,19.181431 22.220703,22.738281 C19.945823,26.295132 16.705119,30.142167 13.943359,33.908203 C13.743445,34.180814 13.612715,34.322738 13.5,34.441406 C13.387285,34.322738 13.256555,34.180814 13.056641,33.908203 C10.284481,30.127985 7.4148684,26.314159 5.015625,22.773438 C2.6163816,19.232715 1,15.953538 1,13.5 C1,6.584596 6.584596,1 13.5,1 Z');\n\n border.appendChild(borderPath);\n\n const maki = DOM.createNS('http://www.w3.org/2000/svg', 'g');\n maki.setAttributeNS(null, 'transform', 'translate(6.0, 7.0)');\n maki.setAttributeNS(null, 'fill', '#FFFFFF');\n\n const circleContainer = DOM.createNS('http://www.w3.org/2000/svg', 'g');\n circleContainer.setAttributeNS(null, 'transform', 'translate(8.0, 8.0)');\n\n const circle1 = DOM.createNS('http://www.w3.org/2000/svg', 'circle');\n circle1.setAttributeNS(null, 'fill', '#000000');\n circle1.setAttributeNS(null, 'opacity', '0.25');\n circle1.setAttributeNS(null, 'cx', '5.5');\n circle1.setAttributeNS(null, 'cy', '5.5');\n circle1.setAttributeNS(null, 'r', '5.4999962');\n\n const circle2 = DOM.createNS('http://www.w3.org/2000/svg', 'circle');\n circle2.setAttributeNS(null, 'fill', '#FFFFFF');\n circle2.setAttributeNS(null, 'cx', '5.5');\n circle2.setAttributeNS(null, 'cy', '5.5');\n circle2.setAttributeNS(null, 'r', '5.4999962');\n\n circleContainer.appendChild(circle1);\n circleContainer.appendChild(circle2);\n\n page1.appendChild(shadow);\n page1.appendChild(background);\n page1.appendChild(border);\n page1.appendChild(maki);\n page1.appendChild(circleContainer);\n\n svg.appendChild(page1);\n\n svg.setAttributeNS(null, 'height', `${defaultHeight * this._scale}px`);\n svg.setAttributeNS(null, 'width', `${defaultWidth * this._scale}px`);\n\n this._element.appendChild(svg);\n\n // if no element and no offset option given apply an offset for the default marker\n // the -14 as the y value of the default marker offset was determined as follows\n //\n // the marker tip is at the center of the shadow ellipse from the default svg\n // the y value of the center of the shadow ellipse relative to the svg top left is \"shadow transform translate-y (29.0) + ellipse cy (5.80029008)\"\n // offset to the svg center \"height (41 / 2)\" gives (29.0 + 5.80029008) - (41 / 2) and rounded for an integer pixel offset gives 14\n // negative is used to move the marker up from the center so the tip is at the Marker lngLat\n this._offset = Point.convert(options && options.offset || [0, -14]);\n } else {\n this._element = options.element;\n this._offset = Point.convert(options && options.offset || [0, 0]);\n }\n\n this._element.classList.add('mapboxgl-marker');\n this._element.addEventListener('dragstart', (e: DragEvent) => {\n e.preventDefault();\n });\n this._element.addEventListener('mousedown', (e: MouseEvent) => {\n // prevent focusing on click\n e.preventDefault();\n });\n applyAnchorClass(this._element, this._anchor, 'marker');\n\n this._popup = null;\n }\n\n /**\n * Attaches the `Marker` to a `Map` object.\n * @param {Map} map The Mapbox GL JS map to add the marker to.\n * @returns {Marker} `this`\n * @example\n * var marker = new mapboxgl.Marker()\n * .setLngLat([30.5, 50.5])\n * .addTo(map); // add the marker to the map\n */\n addTo(map: Map) {\n this.remove();\n this._map = map;\n map.getCanvasContainer().appendChild(this._element);\n map.on('move', this._update);\n map.on('moveend', this._update);\n this.setDraggable(this._draggable);\n this._update();\n\n // If we attached the `click` listener to the marker element, the popup\n // would close once the event propogated to `map` due to the\n // `Popup#_onClickClose` listener.\n this._map.on('click', this._onMapClick);\n\n return this;\n }\n\n /**\n * Removes the marker from a map\n * @example\n * var marker = new mapboxgl.Marker().addTo(map);\n * marker.remove();\n * @returns {Marker} `this`\n */\n remove() {\n if (this._map) {\n this._map.off('click', this._onMapClick);\n this._map.off('move', this._update);\n this._map.off('moveend', this._update);\n this._map.off('mousedown', this._addDragHandler);\n this._map.off('touchstart', this._addDragHandler);\n this._map.off('mouseup', this._onUp);\n this._map.off('touchend', this._onUp);\n this._map.off('mousemove', this._onMove);\n this._map.off('touchmove', this._onMove);\n delete this._map;\n }\n DOM.remove(this._element);\n if (this._popup) this._popup.remove();\n return this;\n }\n\n /**\n * Get the marker's geographical location.\n *\n * The longitude of the result may differ by a multiple of 360 degrees from the longitude previously\n * set by `setLngLat` because `Marker` wraps the anchor longitude across copies of the world to keep\n * the marker on screen.\n *\n * @returns {LngLat} A {@link LngLat} describing the marker's location.\n * @example\n * // Store the marker's longitude and latitude coordinates in a variable\n * var lngLat = marker.getLngLat();\n * // Print the marker's longitude and latitude values in the console\n * console.log('Longitude: ' + lngLat.lng + ', Latitude: ' + lngLat.lat )\n * @see [Create a draggable Marker](https://docs.mapbox.com/mapbox-gl-js/example/drag-a-marker/)\n */\n getLngLat() {\n return this._lngLat;\n }\n\n /**\n * Set the marker's geographical position and move it.\n * @param {LngLat} lnglat A {@link LngLat} describing where the marker should be located.\n * @returns {Marker} `this`\n * @example\n * // Create a new marker, set the longitude and latitude, and add it to the map\n * new mapboxgl.Marker()\n * .setLngLat([-65.017, -16.457])\n * .addTo(map);\n * @see [Add custom icons with Markers](https://docs.mapbox.com/mapbox-gl-js/example/custom-marker-icons/)\n * @see [Create a draggable Marker](https://docs.mapbox.com/mapbox-gl-js/example/drag-a-marker/)\n * @see [Add a marker using a place name](https://docs.mapbox.com/mapbox-gl-js/example/marker-from-geocode/)\n */\n setLngLat(lnglat: LngLatLike) {\n this._lngLat = LngLat.convert(lnglat);\n this._pos = null;\n if (this._popup) this._popup.setLngLat(this._lngLat);\n this._update();\n return this;\n }\n\n /**\n * Returns the `Marker`'s HTML element.\n * @returns {HTMLElement} element\n */\n getElement() {\n return this._element;\n }\n\n /**\n * Binds a {@link Popup} to the {@link Marker}.\n * @param popup An instance of the {@link Popup} class. If undefined or null, any popup\n * set on this {@link Marker} instance is unset.\n * @returns {Marker} `this`\n * @example\n * var marker = new mapboxgl.Marker()\n * .setLngLat([0, 0])\n * .setPopup(new mapboxgl.Popup().setHTML(\"

Hello World!

\")) // add popup\n * .addTo(map);\n * @see [Attach a popup to a marker instance](https://docs.mapbox.com/mapbox-gl-js/example/set-popup/)\n */\n setPopup(popup: ?Popup) {\n if (this._popup) {\n this._popup.remove();\n this._popup = null;\n this._element.removeEventListener('keypress', this._onKeyPress);\n\n if (!this._originalTabIndex) {\n this._element.removeAttribute('tabindex');\n }\n }\n\n if (popup) {\n if (!('offset' in popup.options)) {\n const markerHeight = 41 - (5.8 / 2);\n const markerRadius = 13.5;\n const linearOffset = Math.sqrt(Math.pow(markerRadius, 2) / 2);\n popup.options.offset = this._defaultMarker ? {\n 'top': [0, 0],\n 'top-left': [0, 0],\n 'top-right': [0, 0],\n 'bottom': [0, -markerHeight],\n 'bottom-left': [linearOffset, (markerHeight - markerRadius + linearOffset) * -1],\n 'bottom-right': [-linearOffset, (markerHeight - markerRadius + linearOffset) * -1],\n 'left': [markerRadius, (markerHeight - markerRadius) * -1],\n 'right': [-markerRadius, (markerHeight - markerRadius) * -1]\n } : this._offset;\n }\n this._popup = popup;\n if (this._lngLat) this._popup.setLngLat(this._lngLat);\n\n this._originalTabIndex = this._element.getAttribute('tabindex');\n if (!this._originalTabIndex) {\n this._element.setAttribute('tabindex', '0');\n }\n this._element.addEventListener('keypress', this._onKeyPress);\n }\n\n return this;\n }\n\n _onKeyPress(e: KeyboardEvent) {\n const code = e.code;\n const legacyCode = e.charCode || e.keyCode;\n\n if (\n (code === 'Space') || (code === 'Enter') ||\n (legacyCode === 32) || (legacyCode === 13) // space or enter\n ) {\n this.togglePopup();\n }\n }\n\n _onMapClick(e: MapMouseEvent) {\n const targetElement = e.originalEvent.target;\n const element = this._element;\n\n if (this._popup && (targetElement === element || element.contains((targetElement: any)))) {\n this.togglePopup();\n }\n }\n\n /**\n * Returns the {@link Popup} instance that is bound to the {@link Marker}.\n * @returns {Popup} popup\n * @example\n * var marker = new mapboxgl.Marker()\n * .setLngLat([0, 0])\n * .setPopup(new mapboxgl.Popup().setHTML(\"

Hello World!

\"))\n * .addTo(map);\n *\n * console.log(marker.getPopup()); // return the popup instance\n */\n getPopup() {\n return this._popup;\n }\n\n /**\n * Opens or closes the {@link Popup} instance that is bound to the {@link Marker}, depending on the current state of the {@link Popup}.\n * @returns {Marker} `this`\n * @example\n * var marker = new mapboxgl.Marker()\n * .setLngLat([0, 0])\n * .setPopup(new mapboxgl.Popup().setHTML(\"

Hello World!

\"))\n * .addTo(map);\n *\n * marker.togglePopup(); // toggle popup open or closed\n */\n togglePopup() {\n const popup = this._popup;\n\n if (!popup) return this;\n else if (popup.isOpen()) popup.remove();\n else popup.addTo(this._map);\n return this;\n }\n\n _update(e?: {type: 'move' | 'moveend'}) {\n if (!this._map) return;\n\n if (this._map.transform.renderWorldCopies) {\n this._lngLat = smartWrap(this._lngLat, this._pos, this._map.transform);\n }\n\n this._pos = this._map.project(this._lngLat)._add(this._offset);\n\n let rotation = \"\";\n if (this._rotationAlignment === \"viewport\" || this._rotationAlignment === \"auto\") {\n rotation = `rotateZ(${this._rotation}deg)`;\n } else if (this._rotationAlignment === \"map\") {\n rotation = `rotateZ(${this._rotation - this._map.getBearing()}deg)`;\n }\n\n let pitch = \"\";\n if (this._pitchAlignment === \"viewport\" || this._pitchAlignment === \"auto\") {\n pitch = \"rotateX(0deg)\";\n } else if (this._pitchAlignment === \"map\") {\n pitch = `rotateX(${this._map.getPitch()}deg)`;\n }\n\n // because rounding the coordinates at every `move` event causes stuttered zooming\n // we only round them when _update is called with `moveend` or when its called with\n // no arguments (when the Marker is initialized or Marker#setLngLat is invoked).\n if (!e || e.type === \"moveend\") {\n this._pos = this._pos.round();\n }\n\n DOM.setTransform(this._element, `${anchorTranslate[this._anchor]} translate(${this._pos.x}px, ${this._pos.y}px) ${pitch} ${rotation}`);\n }\n\n /**\n * Get the marker's offset.\n * @returns {Point} The marker's screen coordinates in pixels.\n */\n getOffset() {\n return this._offset;\n }\n\n /**\n * Sets the offset of the marker\n * @param {PointLike} offset The offset in pixels as a {@link PointLike} object to apply relative to the element's center. Negatives indicate left and up.\n * @returns {Marker} `this`\n */\n setOffset(offset: PointLike) {\n this._offset = Point.convert(offset);\n this._update();\n return this;\n }\n\n _onMove(e: MapMouseEvent | MapTouchEvent) {\n if (!this._isDragging) {\n const clickTolerance = this._clickTolerance || this._map._clickTolerance;\n this._isDragging = e.point.dist(this._pointerdownPos) >= clickTolerance;\n }\n if (!this._isDragging) return;\n\n this._pos = e.point.sub(this._positionDelta);\n this._lngLat = this._map.unproject(this._pos);\n this.setLngLat(this._lngLat);\n // suppress click event so that popups don't toggle on drag\n this._element.style.pointerEvents = 'none';\n\n // make sure dragstart only fires on the first move event after mousedown.\n // this can't be on mousedown because that event doesn't necessarily\n // imply that a drag is about to happen.\n if (this._state === 'pending') {\n this._state = 'active';\n\n /**\n * Fired when dragging starts\n *\n * @event dragstart\n * @memberof Marker\n * @instance\n * @type {Object}\n * @property {Marker} marker object that is being dragged\n */\n this.fire(new Event('dragstart'));\n }\n\n /**\n * Fired while dragging\n *\n * @event drag\n * @memberof Marker\n * @instance\n * @type {Object}\n * @property {Marker} marker object that is being dragged\n */\n this.fire(new Event('drag'));\n }\n\n _onUp() {\n // revert to normal pointer event handling\n this._element.style.pointerEvents = 'auto';\n this._positionDelta = null;\n this._pointerdownPos = null;\n this._isDragging = false;\n this._map.off('mousemove', this._onMove);\n this._map.off('touchmove', this._onMove);\n\n // only fire dragend if it was preceded by at least one drag event\n if (this._state === 'active') {\n /**\n * Fired when the marker is finished being dragged\n *\n * @event dragend\n * @memberof Marker\n * @instance\n * @type {Object}\n * @property {Marker} marker object that was dragged\n */\n this.fire(new Event('dragend'));\n }\n\n this._state = 'inactive';\n }\n\n _addDragHandler(e: MapMouseEvent | MapTouchEvent) {\n if (this._element.contains((e.originalEvent.target: any))) {\n e.preventDefault();\n\n // We need to calculate the pixel distance between the click point\n // and the marker position, with the offset accounted for. Then we\n // can subtract this distance from the mousemove event's position\n // to calculate the new marker position.\n // If we don't do this, the marker 'jumps' to the click position\n // creating a jarring UX effect.\n this._positionDelta = e.point.sub(this._pos).add(this._offset);\n\n this._pointerdownPos = e.point;\n\n this._state = 'pending';\n this._map.on('mousemove', this._onMove);\n this._map.on('touchmove', this._onMove);\n this._map.once('mouseup', this._onUp);\n this._map.once('touchend', this._onUp);\n }\n }\n\n /**\n * Sets the `draggable` property and functionality of the marker\n * @param {boolean} [shouldBeDraggable=false] Turns drag functionality on/off\n * @returns {Marker} `this`\n */\n setDraggable(shouldBeDraggable: boolean) {\n this._draggable = !!shouldBeDraggable; // convert possible undefined value to false\n\n // handle case where map may not exist yet\n // e.g. when setDraggable is called before addTo\n if (this._map) {\n if (shouldBeDraggable) {\n this._map.on('mousedown', this._addDragHandler);\n this._map.on('touchstart', this._addDragHandler);\n } else {\n this._map.off('mousedown', this._addDragHandler);\n this._map.off('touchstart', this._addDragHandler);\n }\n }\n\n return this;\n }\n\n /**\n * Returns true if the marker can be dragged\n * @returns {boolean} True if the marker is draggable.\n */\n isDraggable() {\n return this._draggable;\n }\n\n /**\n * Sets the `rotation` property of the marker.\n * @param {number} [rotation=0] The rotation angle of the marker (clockwise, in degrees), relative to its respective {@link Marker#setRotationAlignment} setting.\n * @returns {Marker} `this`\n */\n setRotation(rotation: number) {\n this._rotation = rotation || 0;\n this._update();\n return this;\n }\n\n /**\n * Returns the current rotation angle of the marker (in degrees).\n * @returns {number} The current rotation angle of the marker.\n */\n getRotation() {\n return this._rotation;\n }\n\n /**\n * Sets the `rotationAlignment` property of the marker.\n * @param {string} [alignment='auto'] Sets the `rotationAlignment` property of the marker.\n * @returns {Marker} `this`\n */\n setRotationAlignment(alignment: string) {\n this._rotationAlignment = alignment || 'auto';\n this._update();\n return this;\n }\n\n /**\n * Returns the current `rotationAlignment` property of the marker.\n * @returns {string} The current rotational alignment of the marker.\n */\n getRotationAlignment() {\n return this._rotationAlignment;\n }\n\n /**\n * Sets the `pitchAlignment` property of the marker.\n * @param {string} [alignment] Sets the `pitchAlignment` property of the marker. If alignment is 'auto', it will automatically match `rotationAlignment`.\n * @returns {Marker} `this`\n */\n setPitchAlignment(alignment: string) {\n this._pitchAlignment = alignment && alignment !== 'auto' ? alignment : this._rotationAlignment;\n this._update();\n return this;\n }\n\n /**\n * Returns the current `pitchAlignment` property of the marker.\n * @returns {string} The current pitch alignment of the marker in degrees.\n */\n getPitchAlignment() {\n return this._pitchAlignment;\n }\n}\n", "// @flow\n\nimport {Event, Evented} from '../../util/evented';\nimport DOM from '../../util/dom';\nimport window from '../../util/window';\nimport {extend, bindAll, warnOnce} from '../../util/util';\nimport assert from 'assert';\nimport LngLat from '../../geo/lng_lat';\nimport Marker from '../marker';\n\nimport type Map from '../map';\nimport type {AnimationOptions, CameraOptions} from '../camera';\n\ntype Options = {\n positionOptions?: PositionOptions,\n fitBoundsOptions?: AnimationOptions & CameraOptions,\n trackUserLocation?: boolean,\n showAccuracyCircle?: boolean,\n showUserLocation?: boolean\n};\n\nconst defaultOptions: Options = {\n positionOptions: {\n enableHighAccuracy: false,\n maximumAge: 0,\n timeout: 6000 /* 6 sec */\n },\n fitBoundsOptions: {\n maxZoom: 15\n },\n trackUserLocation: false,\n showAccuracyCircle: true,\n showUserLocation: true\n};\n\nlet supportsGeolocation;\n\nfunction checkGeolocationSupport(callback) {\n if (supportsGeolocation !== undefined) {\n callback(supportsGeolocation);\n\n } else if (window.navigator.permissions !== undefined) {\n // navigator.permissions has incomplete browser support\n // http://caniuse.com/#feat=permissions-api\n // Test for the case where a browser disables Geolocation because of an\n // insecure origin\n window.navigator.permissions.query({name: 'geolocation'}).then((p) => {\n supportsGeolocation = p.state !== 'denied';\n callback(supportsGeolocation);\n });\n\n } else {\n supportsGeolocation = !!window.navigator.geolocation;\n callback(supportsGeolocation);\n }\n}\n\nlet numberOfWatches = 0;\nlet noTimeout = false;\n\n/**\n * A `GeolocateControl` control provides a button that uses the browser's geolocation\n * API to locate the user on the map.\n *\n * Not all browsers support geolocation,\n * and some users may disable the feature. Geolocation support for modern\n * browsers including Chrome requires sites to be served over HTTPS. If\n * geolocation support is not available, the GeolocateControl will show\n * as disabled.\n *\n * The zoom level applied will depend on the accuracy of the geolocation provided by the device.\n *\n * The GeolocateControl has two modes. If `trackUserLocation` is `false` (default) the control acts as a button, which when pressed will set the map's camera to target the user location. If the user moves, the map won't update. This is most suited for the desktop. If `trackUserLocation` is `true` the control acts as a toggle button that when active the user's location is actively monitored for changes. In this mode the GeolocateControl has three interaction states:\n * * active - the map's camera automatically updates as the user's location changes, keeping the location dot in the center. Initial state and upon clicking the `GeolocateControl` button.\n * * passive - the user's location dot automatically updates, but the map's camera does not. Occurs upon the user initiating a map movement.\n * * disabled - occurs if Geolocation is not available, disabled or denied.\n *\n * These interaction states can't be controlled programmatically, rather they are set based on user interactions.\n *\n * @implements {IControl}\n * @param {Object} [options]\n * @param {Object} [options.positionOptions={enableHighAccuracy: false, timeout: 6000}] A Geolocation API [PositionOptions](https://developer.mozilla.org/en-US/docs/Web/API/PositionOptions) object.\n * @param {Object} [options.fitBoundsOptions={maxZoom: 15}] A {@link Map#fitBounds} options object to use when the map is panned and zoomed to the user's location. The default is to use a `maxZoom` of 15 to limit how far the map will zoom in for very accurate locations.\n * @param {Object} [options.trackUserLocation=false] If `true` the Geolocate Control becomes a toggle button and when active the map will receive updates to the user's location as it changes.\n * @param {Object} [options.showAccuracyCircle=true] By default, if showUserLocation is `true`, a transparent circle will be drawn around the user location indicating the accuracy (95% confidence level) of the user's location. Set to `false` to disable. Always disabled when showUserLocation is `false`.\n * @param {Object} [options.showUserLocation=true] By default a dot will be shown on the map at the user's location. Set to `false` to disable.\n *\n * @example\n * map.addControl(new mapboxgl.GeolocateControl({\n * positionOptions: {\n * enableHighAccuracy: true\n * },\n * trackUserLocation: true\n * }));\n * @see [Locate the user](https://www.mapbox.com/mapbox-gl-js/example/locate-user/)\n */\nclass GeolocateControl extends Evented {\n _map: Map;\n options: Options;\n _container: HTMLElement;\n _dotElement: HTMLElement;\n _circleElement: HTMLElement;\n _geolocateButton: HTMLButtonElement;\n _geolocationWatchID: number;\n _timeoutId: ?TimeoutID;\n _watchState: 'OFF' | 'ACTIVE_LOCK' | 'WAITING_ACTIVE' | 'ACTIVE_ERROR' | 'BACKGROUND' | 'BACKGROUND_ERROR';\n _lastKnownPosition: any;\n _userLocationDotMarker: Marker;\n _accuracyCircleMarker: Marker;\n _accuracy: number;\n _setup: boolean; // set to true once the control has been setup\n\n constructor(options: Options) {\n super();\n this.options = extend({}, defaultOptions, options);\n\n bindAll([\n '_onSuccess',\n '_onError',\n '_onZoom',\n '_finish',\n '_setupUI',\n '_updateCamera',\n '_updateMarker'\n ], this);\n }\n\n onAdd(map: Map) {\n this._map = map;\n this._container = DOM.create('div', `mapboxgl-ctrl mapboxgl-ctrl-group`);\n checkGeolocationSupport(this._setupUI);\n return this._container;\n }\n\n onRemove() {\n // clear the geolocation watch if exists\n if (this._geolocationWatchID !== undefined) {\n window.navigator.geolocation.clearWatch(this._geolocationWatchID);\n this._geolocationWatchID = (undefined: any);\n }\n\n // clear the markers from the map\n if (this.options.showUserLocation && this._userLocationDotMarker) {\n this._userLocationDotMarker.remove();\n }\n if (this.options.showAccuracyCircle && this._accuracyCircleMarker) {\n this._accuracyCircleMarker.remove();\n }\n\n DOM.remove(this._container);\n this._map.off('zoom', this._onZoom);\n this._map = (undefined: any);\n numberOfWatches = 0;\n noTimeout = false;\n }\n\n /**\n * Check if the Geolocation API Position is outside the map's maxbounds.\n *\n * @param {Position} position the Geolocation API Position\n * @returns {boolean} Returns `true` if position is outside the map's maxbounds, otherwise returns `false`.\n * @private\n */\n _isOutOfMapMaxBounds(position: Position) {\n const bounds = this._map.getMaxBounds();\n const coordinates = position.coords;\n\n return bounds && (\n coordinates.longitude < bounds.getWest() ||\n coordinates.longitude > bounds.getEast() ||\n coordinates.latitude < bounds.getSouth() ||\n coordinates.latitude > bounds.getNorth()\n );\n }\n\n _setErrorState() {\n switch (this._watchState) {\n case 'WAITING_ACTIVE':\n this._watchState = 'ACTIVE_ERROR';\n this._geolocateButton.classList.remove('mapboxgl-ctrl-geolocate-active');\n this._geolocateButton.classList.add('mapboxgl-ctrl-geolocate-active-error');\n break;\n case 'ACTIVE_LOCK':\n this._watchState = 'ACTIVE_ERROR';\n this._geolocateButton.classList.remove('mapboxgl-ctrl-geolocate-active');\n this._geolocateButton.classList.add('mapboxgl-ctrl-geolocate-active-error');\n this._geolocateButton.classList.add('mapboxgl-ctrl-geolocate-waiting');\n // turn marker grey\n break;\n case 'BACKGROUND':\n this._watchState = 'BACKGROUND_ERROR';\n this._geolocateButton.classList.remove('mapboxgl-ctrl-geolocate-background');\n this._geolocateButton.classList.add('mapboxgl-ctrl-geolocate-background-error');\n this._geolocateButton.classList.add('mapboxgl-ctrl-geolocate-waiting');\n // turn marker grey\n break;\n case 'ACTIVE_ERROR':\n break;\n default:\n assert(false, `Unexpected watchState ${this._watchState}`);\n }\n }\n\n /**\n * When the Geolocation API returns a new location, update the GeolocateControl.\n *\n * @param {Position} position the Geolocation API Position\n * @private\n */\n _onSuccess(position: Position) {\n if (!this._map) {\n // control has since been removed\n return;\n }\n\n if (this._isOutOfMapMaxBounds(position)) {\n this._setErrorState();\n\n this.fire(new Event('outofmaxbounds', position));\n this._updateMarker();\n this._finish();\n\n return;\n }\n\n if (this.options.trackUserLocation) {\n // keep a record of the position so that if the state is BACKGROUND and the user\n // clicks the button, we can move to ACTIVE_LOCK immediately without waiting for\n // watchPosition to trigger _onSuccess\n this._lastKnownPosition = position;\n\n switch (this._watchState) {\n case 'WAITING_ACTIVE':\n case 'ACTIVE_LOCK':\n case 'ACTIVE_ERROR':\n this._watchState = 'ACTIVE_LOCK';\n this._geolocateButton.classList.remove('mapboxgl-ctrl-geolocate-waiting');\n this._geolocateButton.classList.remove('mapboxgl-ctrl-geolocate-active-error');\n this._geolocateButton.classList.add('mapboxgl-ctrl-geolocate-active');\n break;\n case 'BACKGROUND':\n case 'BACKGROUND_ERROR':\n this._watchState = 'BACKGROUND';\n this._geolocateButton.classList.remove('mapboxgl-ctrl-geolocate-waiting');\n this._geolocateButton.classList.remove('mapboxgl-ctrl-geolocate-background-error');\n this._geolocateButton.classList.add('mapboxgl-ctrl-geolocate-background');\n break;\n default:\n assert(false, `Unexpected watchState ${this._watchState}`);\n }\n }\n\n // if showUserLocation and the watch state isn't off then update the marker location\n if (this.options.showUserLocation && this._watchState !== 'OFF') {\n this._updateMarker(position);\n }\n\n // if in normal mode (not watch mode), or if in watch mode and the state is active watch\n // then update the camera\n if (!this.options.trackUserLocation || this._watchState === 'ACTIVE_LOCK') {\n this._updateCamera(position);\n }\n\n if (this.options.showUserLocation) {\n this._dotElement.classList.remove('mapboxgl-user-location-dot-stale');\n }\n\n this.fire(new Event('geolocate', position));\n this._finish();\n }\n\n /**\n * Update the camera location to center on the current position\n *\n * @param {Position} position the Geolocation API Position\n * @private\n */\n _updateCamera(position: Position) {\n const center = new LngLat(position.coords.longitude, position.coords.latitude);\n const radius = position.coords.accuracy;\n const bearing = this._map.getBearing();\n const options = extend({bearing}, this.options.fitBoundsOptions);\n\n this._map.fitBounds(center.toBounds(radius), options, {\n geolocateSource: true // tag this camera change so it won't cause the control to change to background state\n });\n }\n\n /**\n * Update the user location dot Marker to the current position\n *\n * @param {Position} [position] the Geolocation API Position\n * @private\n */\n _updateMarker(position: ?Position) {\n if (position) {\n const center = new LngLat(position.coords.longitude, position.coords.latitude);\n this._accuracyCircleMarker.setLngLat(center).addTo(this._map);\n this._userLocationDotMarker.setLngLat(center).addTo(this._map);\n this._accuracy = position.coords.accuracy;\n if (this.options.showUserLocation && this.options.showAccuracyCircle) {\n this._updateCircleRadius();\n }\n } else {\n this._userLocationDotMarker.remove();\n this._accuracyCircleMarker.remove();\n }\n }\n\n _updateCircleRadius() {\n assert(this._circleElement);\n const y = this._map._container.clientHeight / 2;\n const a = this._map.unproject([0, y]);\n const b = this._map.unproject([1, y]);\n const metersPerPixel = a.distanceTo(b);\n const circleDiameter = Math.ceil(2.0 * this._accuracy / metersPerPixel);\n this._circleElement.style.width = `${circleDiameter}px`;\n this._circleElement.style.height = `${circleDiameter}px`;\n }\n\n _onZoom() {\n if (this.options.showUserLocation && this.options.showAccuracyCircle) {\n this._updateCircleRadius();\n }\n }\n\n _onError(error: PositionError) {\n if (!this._map) {\n // control has since been removed\n return;\n }\n\n if (this.options.trackUserLocation) {\n if (error.code === 1) {\n // PERMISSION_DENIED\n this._watchState = 'OFF';\n this._geolocateButton.classList.remove('mapboxgl-ctrl-geolocate-waiting');\n this._geolocateButton.classList.remove('mapboxgl-ctrl-geolocate-active');\n this._geolocateButton.classList.remove('mapboxgl-ctrl-geolocate-active-error');\n this._geolocateButton.classList.remove('mapboxgl-ctrl-geolocate-background');\n this._geolocateButton.classList.remove('mapboxgl-ctrl-geolocate-background-error');\n this._geolocateButton.disabled = true;\n const title = this._map._getUIString('GeolocateControl.LocationNotAvailable');\n this._geolocateButton.title = title;\n this._geolocateButton.setAttribute('aria-label', title);\n\n if (this._geolocationWatchID !== undefined) {\n this._clearWatch();\n }\n } else if (error.code === 3 && noTimeout) {\n // this represents a forced error state\n // this was triggered to force immediate geolocation when a watch is already present\n // see https://github.com/mapbox/mapbox-gl-js/issues/8214\n // and https://w3c.github.io/geolocation-api/#example-5-forcing-the-user-agent-to-return-a-fresh-cached-position\n return;\n } else {\n this._setErrorState();\n }\n }\n\n if (this._watchState !== 'OFF' && this.options.showUserLocation) {\n this._dotElement.classList.add('mapboxgl-user-location-dot-stale');\n }\n\n this.fire(new Event('error', error));\n\n this._finish();\n }\n\n _finish() {\n if (this._timeoutId) { clearTimeout(this._timeoutId); }\n this._timeoutId = undefined;\n }\n\n _setupUI(supported: boolean) {\n this._container.addEventListener('contextmenu', (e: MouseEvent) => e.preventDefault());\n this._geolocateButton = DOM.create('button', `mapboxgl-ctrl-geolocate`, this._container);\n DOM.create('span', `mapboxgl-ctrl-icon`, this._geolocateButton).setAttribute('aria-hidden', true);\n this._geolocateButton.type = 'button';\n\n if (supported === false) {\n warnOnce('Geolocation support is not available so the GeolocateControl will be disabled.');\n const title = this._map._getUIString('GeolocateControl.LocationNotAvailable');\n this._geolocateButton.disabled = true;\n this._geolocateButton.title = title;\n this._geolocateButton.setAttribute('aria-label', title);\n } else {\n const title = this._map._getUIString('GeolocateControl.FindMyLocation');\n this._geolocateButton.title = title;\n this._geolocateButton.setAttribute('aria-label', title);\n }\n\n if (this.options.trackUserLocation) {\n this._geolocateButton.setAttribute('aria-pressed', 'false');\n this._watchState = 'OFF';\n }\n\n // when showUserLocation is enabled, keep the Geolocate button disabled until the device location marker is setup on the map\n if (this.options.showUserLocation) {\n this._dotElement = DOM.create('div', 'mapboxgl-user-location-dot');\n\n this._userLocationDotMarker = new Marker(this._dotElement);\n\n this._circleElement = DOM.create('div', 'mapboxgl-user-location-accuracy-circle');\n this._accuracyCircleMarker = new Marker({element: this._circleElement, pitchAlignment: 'map'});\n\n if (this.options.trackUserLocation) this._watchState = 'OFF';\n\n this._map.on('zoom', this._onZoom);\n }\n\n this._geolocateButton.addEventListener('click',\n this.trigger.bind(this));\n\n this._setup = true;\n\n // when the camera is changed (and it's not as a result of the Geolocation Control) change\n // the watch mode to background watch, so that the marker is updated but not the camera.\n if (this.options.trackUserLocation) {\n this._map.on('movestart', (event) => {\n const fromResize = event.originalEvent && event.originalEvent.type === 'resize';\n if (!event.geolocateSource && this._watchState === 'ACTIVE_LOCK' && !fromResize) {\n this._watchState = 'BACKGROUND';\n this._geolocateButton.classList.add('mapboxgl-ctrl-geolocate-background');\n this._geolocateButton.classList.remove('mapboxgl-ctrl-geolocate-active');\n\n this.fire(new Event('trackuserlocationend'));\n }\n });\n }\n }\n\n /**\n * Programmatically request and move the map to the user's location.\n *\n * @returns {boolean} Returns `false` if called before control was added to a map, otherwise returns `true`.\n * @example\n * // Initialize the geolocate control.\n * var geolocate = new mapboxgl.GeolocateControl({\n * positionOptions: {\n * enableHighAccuracy: true\n * },\n * trackUserLocation: true\n * });\n * // Add the control to the map.\n * map.addControl(geolocate);\n * map.on('load', function() {\n * geolocate.trigger();\n * });\n */\n trigger() {\n if (!this._setup) {\n warnOnce('Geolocate control triggered before added to a map');\n return false;\n }\n if (this.options.trackUserLocation) {\n // update watchState and do any outgoing state cleanup\n switch (this._watchState) {\n case 'OFF':\n // turn on the Geolocate Control\n this._watchState = 'WAITING_ACTIVE';\n\n this.fire(new Event('trackuserlocationstart'));\n break;\n case 'WAITING_ACTIVE':\n case 'ACTIVE_LOCK':\n case 'ACTIVE_ERROR':\n case 'BACKGROUND_ERROR':\n // turn off the Geolocate Control\n numberOfWatches--;\n noTimeout = false;\n this._watchState = 'OFF';\n this._geolocateButton.classList.remove('mapboxgl-ctrl-geolocate-waiting');\n this._geolocateButton.classList.remove('mapboxgl-ctrl-geolocate-active');\n this._geolocateButton.classList.remove('mapboxgl-ctrl-geolocate-active-error');\n this._geolocateButton.classList.remove('mapboxgl-ctrl-geolocate-background');\n this._geolocateButton.classList.remove('mapboxgl-ctrl-geolocate-background-error');\n\n this.fire(new Event('trackuserlocationend'));\n break;\n case 'BACKGROUND':\n this._watchState = 'ACTIVE_LOCK';\n this._geolocateButton.classList.remove('mapboxgl-ctrl-geolocate-background');\n // set camera to last known location\n if (this._lastKnownPosition) this._updateCamera(this._lastKnownPosition);\n\n this.fire(new Event('trackuserlocationstart'));\n break;\n default:\n assert(false, `Unexpected watchState ${this._watchState}`);\n }\n\n // incoming state setup\n switch (this._watchState) {\n case 'WAITING_ACTIVE':\n this._geolocateButton.classList.add('mapboxgl-ctrl-geolocate-waiting');\n this._geolocateButton.classList.add('mapboxgl-ctrl-geolocate-active');\n break;\n case 'ACTIVE_LOCK':\n this._geolocateButton.classList.add('mapboxgl-ctrl-geolocate-active');\n break;\n case 'ACTIVE_ERROR':\n this._geolocateButton.classList.add('mapboxgl-ctrl-geolocate-waiting');\n this._geolocateButton.classList.add('mapboxgl-ctrl-geolocate-active-error');\n break;\n case 'BACKGROUND':\n this._geolocateButton.classList.add('mapboxgl-ctrl-geolocate-background');\n break;\n case 'BACKGROUND_ERROR':\n this._geolocateButton.classList.add('mapboxgl-ctrl-geolocate-waiting');\n this._geolocateButton.classList.add('mapboxgl-ctrl-geolocate-background-error');\n break;\n case 'OFF':\n break;\n default:\n assert(false, `Unexpected watchState ${this._watchState}`);\n }\n\n // manage geolocation.watchPosition / geolocation.clearWatch\n if (this._watchState === 'OFF' && this._geolocationWatchID !== undefined) {\n // clear watchPosition as we've changed to an OFF state\n this._clearWatch();\n } else if (this._geolocationWatchID === undefined) {\n // enable watchPosition since watchState is not OFF and there is no watchPosition already running\n\n this._geolocateButton.classList.add('mapboxgl-ctrl-geolocate-waiting');\n this._geolocateButton.setAttribute('aria-pressed', 'true');\n\n numberOfWatches++;\n let positionOptions;\n if (numberOfWatches > 1) {\n positionOptions = {maximumAge:600000, timeout:0};\n noTimeout = true;\n } else {\n positionOptions = this.options.positionOptions;\n noTimeout = false;\n }\n\n this._geolocationWatchID = window.navigator.geolocation.watchPosition(\n this._onSuccess, this._onError, positionOptions);\n }\n } else {\n window.navigator.geolocation.getCurrentPosition(\n this._onSuccess, this._onError, this.options.positionOptions);\n\n // This timeout ensures that we still call finish() even if\n // the user declines to share their location in Firefox\n this._timeoutId = setTimeout(this._finish, 10000 /* 10sec */);\n }\n\n return true;\n }\n\n _clearWatch() {\n window.navigator.geolocation.clearWatch(this._geolocationWatchID);\n\n this._geolocationWatchID = (undefined: any);\n this._geolocateButton.classList.remove('mapboxgl-ctrl-geolocate-waiting');\n this._geolocateButton.setAttribute('aria-pressed', 'false');\n\n if (this.options.showUserLocation) {\n this._updateMarker(null);\n }\n }\n}\n\nexport default GeolocateControl;\n\n/* Geolocate Control Watch States\n * This is the private state of the control.\n *\n * OFF\n * off/inactive\n * WAITING_ACTIVE\n * Geolocate Control was clicked but still waiting for Geolocation API response with user location\n * ACTIVE_LOCK\n * Showing the user location as a dot AND tracking the camera to be fixed to their location. If their location changes the map moves to follow.\n * ACTIVE_ERROR\n * There was en error from the Geolocation API while trying to show and track the user location.\n * BACKGROUND\n * Showing the user location as a dot but the camera doesn't follow their location as it changes.\n * BACKGROUND_ERROR\n * There was an error from the Geolocation API while trying to show (but not track) the user location.\n */\n\n/**\n * Fired on each Geolocation API position update which returned as success.\n *\n * @event geolocate\n * @memberof GeolocateControl\n * @instance\n * @property {Position} data The returned [Position](https://developer.mozilla.org/en-US/docs/Web/API/Position) object from the callback in [Geolocation.getCurrentPosition()](https://developer.mozilla.org/en-US/docs/Web/API/Geolocation/getCurrentPosition) or [Geolocation.watchPosition()](https://developer.mozilla.org/en-US/docs/Web/API/Geolocation/watchPosition).\n * @example\n * // Initialize the geolocate control.\n * var geolocate = new mapboxgl.GeolocateControl({\n * positionOptions: {\n * enableHighAccuracy: true\n * },\n * trackUserLocation: true\n * });\n * // Add the control to the map.\n * map.addControl(geolocate);\n * // Set an event listener that fires\n * // when a geolocate event occurs.\n * geolocate.on('geolocate', function() {\n * console.log('A geolocate event has occurred.')\n * });\n *\n */\n\n/**\n * Fired on each Geolocation API position update which returned as an error.\n *\n * @event error\n * @memberof GeolocateControl\n * @instance\n * @property {PositionError} data The returned [PositionError](https://developer.mozilla.org/en-US/docs/Web/API/PositionError) object from the callback in [Geolocation.getCurrentPosition()](https://developer.mozilla.org/en-US/docs/Web/API/Geolocation/getCurrentPosition) or [Geolocation.watchPosition()](https://developer.mozilla.org/en-US/docs/Web/API/Geolocation/watchPosition).\n * @example\n * // Initialize the geolocate control.\n * var geolocate = new mapboxgl.GeolocateControl({\n * positionOptions: {\n * enableHighAccuracy: true\n * },\n * trackUserLocation: true\n * });\n * // Add the control to the map.\n * map.addControl(geolocate);\n * // Set an event listener that fires\n * // when an error event occurs.\n * geolocate.on('error', function() {\n * console.log('An error event has occurred.')\n * });\n *\n */\n\n/**\n * Fired on each Geolocation API position update which returned as success but user position is out of map maxBounds.\n *\n * @event outofmaxbounds\n * @memberof GeolocateControl\n * @instance\n * @property {Position} data The returned [Position](https://developer.mozilla.org/en-US/docs/Web/API/Position) object from the callback in [Geolocation.getCurrentPosition()](https://developer.mozilla.org/en-US/docs/Web/API/Geolocation/getCurrentPosition) or [Geolocation.watchPosition()](https://developer.mozilla.org/en-US/docs/Web/API/Geolocation/watchPosition).\n * @example\n * // Initialize the geolocate control.\n * var geolocate = new mapboxgl.GeolocateControl({\n * positionOptions: {\n * enableHighAccuracy: true\n * },\n * trackUserLocation: true\n * });\n * // Add the control to the map.\n * map.addControl(geolocate);\n * // Set an event listener that fires\n * // when an outofmaxbounds event occurs.\n * geolocate.on('outofmaxbounds', function() {\n * console.log('An outofmaxbounds event has occurred.')\n * });\n *\n */\n\n/**\n * Fired when the Geolocate Control changes to the active lock state, which happens either upon first obtaining a successful Geolocation API position for the user (a geolocate event will follow), or the user clicks the geolocate button when in the background state which uses the last known position to recenter the map and enter active lock state (no geolocate event will follow unless the users's location changes).\n *\n * @event trackuserlocationstart\n * @memberof GeolocateControl\n * @instance\n * @example\n * // Initialize the geolocate control.\n * var geolocate = new mapboxgl.GeolocateControl({\n * positionOptions: {\n * enableHighAccuracy: true\n * },\n * trackUserLocation: true\n * });\n * // Add the control to the map.\n * map.addControl(geolocate);\n * // Set an event listener that fires\n * // when a trackuserlocationstart event occurs.\n * geolocate.on('trackuserlocationstart', function() {\n * console.log('A trackuserlocationstart event has occurred.')\n * });\n *\n */\n\n/**\n * Fired when the Geolocate Control changes to the background state, which happens when a user changes the camera during an active position lock. This only applies when trackUserLocation is true. In the background state, the dot on the map will update with location updates but the camera will not.\n *\n * @event trackuserlocationend\n * @memberof GeolocateControl\n * @instance\n * @example\n * // Initialize the geolocate control.\n * var geolocate = new mapboxgl.GeolocateControl({\n * positionOptions: {\n * enableHighAccuracy: true\n * },\n * trackUserLocation: true\n * });\n * // Add the control to the map.\n * map.addControl(geolocate);\n * // Set an event listener that fires\n * // when a trackuserlocationend event occurs.\n * geolocate.on('trackuserlocationend', function() {\n * console.log('A trackuserlocationend event has occurred.')\n * });\n *\n */\n", "// @flow\n\nimport DOM from '../../util/dom';\nimport {extend, bindAll} from '../../util/util';\n\nimport type Map from '../map';\n\ntype Unit = 'imperial' | 'metric' | 'nautical';\n\ntype Options = {\n maxWidth?: number,\n unit?: Unit;\n};\n\nconst defaultOptions: Options = {\n maxWidth: 100,\n unit: 'metric'\n};\n\n/**\n * A `ScaleControl` control displays the ratio of a distance on the map to the corresponding distance on the ground.\n *\n * @implements {IControl}\n * @param {Object} [options]\n * @param {number} [options.maxWidth='100'] The maximum length of the scale control in pixels.\n * @param {string} [options.unit='metric'] Unit of the distance (`'imperial'`, `'metric'` or `'nautical'`).\n * @example\n * var scale = new mapboxgl.ScaleControl({\n * maxWidth: 80,\n * unit: 'imperial'\n * });\n * map.addControl(scale);\n *\n * scale.setUnit('metric');\n */\nclass ScaleControl {\n _map: Map;\n _container: HTMLElement;\n options: Options;\n\n constructor(options: Options) {\n this.options = extend({}, defaultOptions, options);\n\n bindAll([\n '_onMove',\n 'setUnit'\n ], this);\n }\n\n getDefaultPosition() {\n return 'bottom-left';\n }\n\n _onMove() {\n updateScale(this._map, this._container, this.options);\n }\n\n onAdd(map: Map) {\n this._map = map;\n this._container = DOM.create('div', 'mapboxgl-ctrl mapboxgl-ctrl-scale', map.getContainer());\n\n this._map.on('move', this._onMove);\n this._onMove();\n\n return this._container;\n }\n\n onRemove() {\n DOM.remove(this._container);\n this._map.off('move', this._onMove);\n this._map = (undefined: any);\n }\n\n /**\n * Set the scale's unit of the distance\n *\n * @param unit Unit of the distance (`'imperial'`, `'metric'` or `'nautical'`).\n */\n setUnit(unit: Unit) {\n this.options.unit = unit;\n updateScale(this._map, this._container, this.options);\n }\n}\n\nexport default ScaleControl;\n\nfunction updateScale(map, container, options) {\n // A horizontal scale is imagined to be present at center of the map\n // container with maximum length (Default) as 100px.\n // Using spherical law of cosines approximation, the real distance is\n // found between the two coordinates.\n const maxWidth = options && options.maxWidth || 100;\n\n const y = map._container.clientHeight / 2;\n const left = map.unproject([0, y]);\n const right = map.unproject([maxWidth, y]);\n const maxMeters = left.distanceTo(right);\n // The real distance corresponding to 100px scale length is rounded off to\n // near pretty number and the scale length for the same is found out.\n // Default unit of the scale is based on User's locale.\n if (options && options.unit === 'imperial') {\n const maxFeet = 3.2808 * maxMeters;\n if (maxFeet > 5280) {\n const maxMiles = maxFeet / 5280;\n setScale(container, maxWidth, maxMiles, map._getUIString('ScaleControl.Miles'));\n } else {\n setScale(container, maxWidth, maxFeet, map._getUIString('ScaleControl.Feet'));\n }\n } else if (options && options.unit === 'nautical') {\n const maxNauticals = maxMeters / 1852;\n setScale(container, maxWidth, maxNauticals, map._getUIString('ScaleControl.NauticalMiles'));\n } else if (maxMeters >= 1000) {\n setScale(container, maxWidth, maxMeters / 1000, map._getUIString('ScaleControl.Kilometers'));\n } else {\n setScale(container, maxWidth, maxMeters, map._getUIString('ScaleControl.Meters'));\n }\n}\n\nfunction setScale(container, maxWidth, maxDistance, unit) {\n const distance = getRoundNum(maxDistance);\n const ratio = distance / maxDistance;\n container.style.width = `${maxWidth * ratio}px`;\n container.innerHTML = `${distance} ${unit}`;\n}\n\nfunction getDecimalRoundNum(d) {\n const multiplier = Math.pow(10, Math.ceil(-Math.log(d) / Math.LN10));\n return Math.round(d * multiplier) / multiplier;\n}\n\nfunction getRoundNum(num) {\n const pow10 = Math.pow(10, (`${Math.floor(num)}`).length - 1);\n let d = num / pow10;\n\n d = d >= 10 ? 10 :\n d >= 5 ? 5 :\n d >= 3 ? 3 :\n d >= 2 ? 2 :\n d >= 1 ? 1 : getDecimalRoundNum(d);\n\n return pow10 * d;\n}\n", "// @flow\n\nimport DOM from '../../util/dom';\n\nimport {bindAll, warnOnce} from '../../util/util';\nimport window from '../../util/window';\n\nimport type Map from '../map';\n\ntype Options = {\n container?: HTMLElement\n};\n\n/**\n * A `FullscreenControl` control contains a button for toggling the map in and out of fullscreen mode.\n *\n * @implements {IControl}\n * @param {Object} [options]\n * @param {HTMLElement} [options.container] `container` is the [compatible DOM element](https://developer.mozilla.org/en-US/docs/Web/API/Element/requestFullScreen#Compatible_elements) which should be made full screen. By default, the map container element will be made full screen.\n *\n * @example\n * map.addControl(new mapboxgl.FullscreenControl({container: document.querySelector('body')}));\n * @see [View a fullscreen map](https://www.mapbox.com/mapbox-gl-js/example/fullscreen/)\n */\n\nclass FullscreenControl {\n _map: Map;\n _controlContainer: HTMLElement;\n _fullscreen: boolean;\n _fullscreenchange: string;\n _fullscreenButton: HTMLElement;\n _container: HTMLElement;\n\n constructor(options: Options) {\n this._fullscreen = false;\n if (options && options.container) {\n if (options.container instanceof window.HTMLElement) {\n this._container = options.container;\n } else {\n warnOnce('Full screen control \\'container\\' must be a DOM element.');\n }\n }\n bindAll([\n '_onClickFullscreen',\n '_changeIcon'\n ], this);\n if ('onfullscreenchange' in window.document) {\n this._fullscreenchange = 'fullscreenchange';\n } else if ('onmozfullscreenchange' in window.document) {\n this._fullscreenchange = 'mozfullscreenchange';\n } else if ('onwebkitfullscreenchange' in window.document) {\n this._fullscreenchange = 'webkitfullscreenchange';\n } else if ('onmsfullscreenchange' in window.document) {\n this._fullscreenchange = 'MSFullscreenChange';\n }\n }\n\n onAdd(map: Map) {\n this._map = map;\n if (!this._container) this._container = this._map.getContainer();\n this._controlContainer = DOM.create('div', `mapboxgl-ctrl mapboxgl-ctrl-group`);\n if (this._checkFullscreenSupport()) {\n this._setupUI();\n } else {\n this._controlContainer.style.display = 'none';\n warnOnce('This device does not support fullscreen mode.');\n }\n return this._controlContainer;\n }\n\n onRemove() {\n DOM.remove(this._controlContainer);\n this._map = (null: any);\n window.document.removeEventListener(this._fullscreenchange, this._changeIcon);\n }\n\n _checkFullscreenSupport() {\n return !!(\n window.document.fullscreenEnabled ||\n (window.document: any).mozFullScreenEnabled ||\n (window.document: any).msFullscreenEnabled ||\n (window.document: any).webkitFullscreenEnabled\n );\n }\n\n _setupUI() {\n const button = this._fullscreenButton = DOM.create('button', (`mapboxgl-ctrl-fullscreen`), this._controlContainer);\n DOM.create('span', `mapboxgl-ctrl-icon`, button).setAttribute('aria-hidden', true);\n button.type = 'button';\n this._updateTitle();\n this._fullscreenButton.addEventListener('click', this._onClickFullscreen);\n window.document.addEventListener(this._fullscreenchange, this._changeIcon);\n }\n\n _updateTitle() {\n const title = this._getTitle();\n this._fullscreenButton.setAttribute(\"aria-label\", title);\n this._fullscreenButton.title = title;\n }\n\n _getTitle() {\n return this._map._getUIString(this._isFullscreen() ? 'FullscreenControl.Exit' : 'FullscreenControl.Enter');\n }\n\n _isFullscreen() {\n return this._fullscreen;\n }\n\n _changeIcon() {\n const fullscreenElement =\n window.document.fullscreenElement ||\n (window.document: any).mozFullScreenElement ||\n (window.document: any).webkitFullscreenElement ||\n (window.document: any).msFullscreenElement;\n\n if ((fullscreenElement === this._container) !== this._fullscreen) {\n this._fullscreen = !this._fullscreen;\n this._fullscreenButton.classList.toggle(`mapboxgl-ctrl-shrink`);\n this._fullscreenButton.classList.toggle(`mapboxgl-ctrl-fullscreen`);\n this._updateTitle();\n }\n }\n\n _onClickFullscreen() {\n if (this._isFullscreen()) {\n if (window.document.exitFullscreen) {\n (window.document: any).exitFullscreen();\n } else if (window.document.mozCancelFullScreen) {\n (window.document: any).mozCancelFullScreen();\n } else if (window.document.msExitFullscreen) {\n (window.document: any).msExitFullscreen();\n } else if (window.document.webkitCancelFullScreen) {\n (window.document: any).webkitCancelFullScreen();\n }\n } else if (this._container.requestFullscreen) {\n this._container.requestFullscreen();\n } else if ((this._container: any).mozRequestFullScreen) {\n (this._container: any).mozRequestFullScreen();\n } else if ((this._container: any).msRequestFullscreen) {\n (this._container: any).msRequestFullscreen();\n } else if ((this._container: any).webkitRequestFullscreen) {\n (this._container: any).webkitRequestFullscreen();\n }\n }\n}\n\nexport default FullscreenControl;\n", "// @flow\n\nimport {extend, bindAll} from '../util/util';\nimport {Event, Evented} from '../util/evented';\nimport {MapMouseEvent} from '../ui/events';\nimport DOM from '../util/dom';\nimport LngLat from '../geo/lng_lat';\nimport Point from '@mapbox/point-geometry';\nimport window from '../util/window';\nimport smartWrap from '../util/smart_wrap';\nimport {type Anchor, anchorTranslate, applyAnchorClass} from './anchor';\n\nimport type Map from './map';\nimport type {LngLatLike} from '../geo/lng_lat';\nimport type {PointLike} from '@mapbox/point-geometry';\n\nconst defaultOptions = {\n closeButton: true,\n closeOnClick: true,\n focusAfterOpen: true,\n className: '',\n maxWidth: \"240px\"\n};\n\nexport type Offset = number | PointLike | {[_: Anchor]: PointLike};\n\nexport type PopupOptions = {\n closeButton?: boolean,\n closeOnClick?: boolean,\n closeOnMove?: boolean,\n focusAfterOpen?: boolean,\n anchor?: Anchor,\n offset?: Offset,\n className?: string,\n maxWidth?: string\n};\n\nconst focusQuerySelector = [\n \"a[href]\",\n \"[tabindex]:not([tabindex='-1'])\",\n \"[contenteditable]:not([contenteditable='false'])\",\n \"button:not([disabled])\",\n \"input:not([disabled])\",\n \"select:not([disabled])\",\n \"textarea:not([disabled])\",\n].join(\", \");\n\n/**\n * A popup component.\n *\n * @param {Object} [options]\n * @param {boolean} [options.closeButton=true] If `true`, a close button will appear in the\n * top right corner of the popup.\n * @param {boolean} [options.closeOnClick=true] If `true`, the popup will closed when the\n * map is clicked.\n * @param {boolean} [options.closeOnMove=false] If `true`, the popup will closed when the\n * map moves.\n * @param {boolean} [options.focusAfterOpen=true] If `true`, the popup will try to focus the\n * first focusable element inside the popup.\n * @param {string} [options.anchor] - A string indicating the part of the Popup that should\n * be positioned closest to the coordinate set via {@link Popup#setLngLat}.\n * Options are `'center'`, `'top'`, `'bottom'`, `'left'`, `'right'`, `'top-left'`,\n * `'top-right'`, `'bottom-left'`, and `'bottom-right'`. If unset the anchor will be\n * dynamically set to ensure the popup falls within the map container with a preference\n * for `'bottom'`.\n * @param {number|PointLike|Object} [options.offset] -\n * A pixel offset applied to the popup's location specified as:\n * - a single number specifying a distance from the popup's location\n * - a {@link PointLike} specifying a constant offset\n * - an object of {@link Point}s specifing an offset for each anchor position\n * Negative offsets indicate left and up.\n * @param {string} [options.className] Space-separated CSS class names to add to popup container\n * @param {string} [options.maxWidth='240px'] -\n * A string that sets the CSS property of the popup's maximum width, eg `'300px'`.\n * To ensure the popup resizes to fit its content, set this property to `'none'`.\n * Available values can be found here: https://developer.mozilla.org/en-US/docs/Web/CSS/max-width\n * @example\n * var markerHeight = 50, markerRadius = 10, linearOffset = 25;\n * var popupOffsets = {\n * 'top': [0, 0],\n * 'top-left': [0,0],\n * 'top-right': [0,0],\n * 'bottom': [0, -markerHeight],\n * 'bottom-left': [linearOffset, (markerHeight - markerRadius + linearOffset) * -1],\n * 'bottom-right': [-linearOffset, (markerHeight - markerRadius + linearOffset) * -1],\n * 'left': [markerRadius, (markerHeight - markerRadius) * -1],\n * 'right': [-markerRadius, (markerHeight - markerRadius) * -1]\n * };\n * var popup = new mapboxgl.Popup({offset: popupOffsets, className: 'my-class'})\n * .setLngLat(e.lngLat)\n * .setHTML(\"

Hello World!

\")\n * .setMaxWidth(\"300px\")\n * .addTo(map);\n * @see [Display a popup](https://www.mapbox.com/mapbox-gl-js/example/popup/)\n * @see [Display a popup on hover](https://www.mapbox.com/mapbox-gl-js/example/popup-on-hover/)\n * @see [Display a popup on click](https://www.mapbox.com/mapbox-gl-js/example/popup-on-click/)\n * @see [Attach a popup to a marker instance](https://www.mapbox.com/mapbox-gl-js/example/set-popup/)\n */\nexport default class Popup extends Evented {\n _map: Map;\n options: PopupOptions;\n _content: HTMLElement;\n _container: HTMLElement;\n _closeButton: HTMLElement;\n _tip: HTMLElement;\n _lngLat: LngLat;\n _trackPointer: boolean;\n _pos: ?Point;\n\n constructor(options: PopupOptions) {\n super();\n this.options = extend(Object.create(defaultOptions), options);\n bindAll(['_update', '_onClose', 'remove', '_onMouseMove', '_onMouseUp', '_onDrag'], this);\n }\n\n /**\n * Adds the popup to a map.\n *\n * @param {Map} map The Mapbox GL JS map to add the popup to.\n * @returns {Popup} `this`\n * @example\n * new mapboxgl.Popup()\n * .setLngLat([0, 0])\n * .setHTML(\"

Null Island

\")\n * .addTo(map);\n * @see [Display a popup](https://docs.mapbox.com/mapbox-gl-js/example/popup/)\n * @see [Display a popup on hover](https://docs.mapbox.com/mapbox-gl-js/example/popup-on-hover/)\n * @see [Display a popup on click](https://docs.mapbox.com/mapbox-gl-js/example/popup-on-click/)\n * @see [Show polygon information on click](https://docs.mapbox.com/mapbox-gl-js/example/polygon-popup-on-click/)\n */\n addTo(map: Map) {\n if (this._map) this.remove();\n\n this._map = map;\n if (this.options.closeOnClick) {\n this._map.on('click', this._onClose);\n }\n\n if (this.options.closeOnMove) {\n this._map.on('move', this._onClose);\n }\n\n this._map.on('remove', this.remove);\n this._update();\n this._focusFirstElement();\n\n if (this._trackPointer) {\n this._map.on('mousemove', this._onMouseMove);\n this._map.on('mouseup', this._onMouseUp);\n if (this._container) {\n this._container.classList.add('mapboxgl-popup-track-pointer');\n }\n this._map._canvasContainer.classList.add('mapboxgl-track-pointer');\n } else {\n this._map.on('move', this._update);\n }\n\n /**\n * Fired when the popup is opened manually or programatically.\n *\n * @event open\n * @memberof Popup\n * @instance\n * @type {Object}\n * @property {Popup} popup object that was opened\n *\n * @example\n * // Create a popup\n * var popup = new mapboxgl.Popup();\n * // Set an event listener that will fire\n * // any time the popup is opened\n * popup.on('open', function(){\n * console.log('popup was opened');\n * });\n *\n */\n this.fire(new Event('open'));\n\n return this;\n }\n\n /**\n * @returns {boolean} `true` if the popup is open, `false` if it is closed.\n */\n isOpen() {\n return !!this._map;\n }\n\n /**\n * Removes the popup from the map it has been added to.\n *\n * @example\n * var popup = new mapboxgl.Popup().addTo(map);\n * popup.remove();\n * @returns {Popup} `this`\n */\n remove() {\n if (this._content) {\n DOM.remove(this._content);\n }\n\n if (this._container) {\n DOM.remove(this._container);\n delete this._container;\n }\n\n if (this._map) {\n this._map.off('move', this._update);\n this._map.off('move', this._onClose);\n this._map.off('click', this._onClose);\n this._map.off('remove', this.remove);\n this._map.off('mousemove', this._onMouseMove);\n this._map.off('mouseup', this._onMouseUp);\n this._map.off('drag', this._onDrag);\n delete this._map;\n }\n\n /**\n * Fired when the popup is closed manually or programatically.\n *\n * @event close\n * @memberof Popup\n * @instance\n * @type {Object}\n * @property {Popup} popup object that was closed\n *\n * @example\n * // Create a popup\n * var popup = new mapboxgl.Popup();\n * // Set an event listener that will fire\n * // any time the popup is closed\n * popup.on('close', function(){\n * console.log('popup was closed');\n * });\n *\n */\n this.fire(new Event('close'));\n\n return this;\n }\n\n /**\n * Returns the geographical location of the popup's anchor.\n *\n * The longitude of the result may differ by a multiple of 360 degrees from the longitude previously\n * set by `setLngLat` because `Popup` wraps the anchor longitude across copies of the world to keep\n * the popup on screen.\n *\n * @returns {LngLat} The geographical location of the popup's anchor.\n */\n getLngLat() {\n return this._lngLat;\n }\n\n /**\n * Sets the geographical location of the popup's anchor, and moves the popup to it. Replaces trackPointer() behavior.\n *\n * @param lnglat The geographical location to set as the popup's anchor.\n * @returns {Popup} `this`\n */\n setLngLat(lnglat: LngLatLike) {\n this._lngLat = LngLat.convert(lnglat);\n this._pos = null;\n\n this._trackPointer = false;\n\n this._update();\n\n if (this._map) {\n this._map.on('move', this._update);\n this._map.off('mousemove', this._onMouseMove);\n if (this._container) {\n this._container.classList.remove('mapboxgl-popup-track-pointer');\n }\n this._map._canvasContainer.classList.remove('mapboxgl-track-pointer');\n }\n\n return this;\n }\n\n /**\n * Tracks the popup anchor to the cursor position on screens with a pointer device (it will be hidden on touchscreens). Replaces the `setLngLat` behavior.\n * For most use cases, set `closeOnClick` and `closeButton` to `false`.\n * @example\n * var popup = new mapboxgl.Popup({ closeOnClick: false, closeButton: false })\n * .setHTML(\"

Hello World!

\")\n * .trackPointer()\n * .addTo(map);\n * @returns {Popup} `this`\n */\n trackPointer() {\n this._trackPointer = true;\n this._pos = null;\n this._update();\n if (this._map) {\n this._map.off('move', this._update);\n this._map.on('mousemove', this._onMouseMove);\n this._map.on('drag', this._onDrag);\n if (this._container) {\n this._container.classList.add('mapboxgl-popup-track-pointer');\n }\n this._map._canvasContainer.classList.add('mapboxgl-track-pointer');\n }\n\n return this;\n\n }\n\n /**\n * Returns the `Popup`'s HTML element.\n * @example\n * // Change the `Popup` element's font size\n * var popup = new mapboxgl.Popup()\n * .setLngLat([-96, 37.8])\n * .setHTML(\"

Hello World!

\")\n * .addTo(map);\n * var popupElem = popup.getElement();\n * popupElem.style.fontSize = \"25px\";\n * @returns {HTMLElement} element\n */\n getElement() {\n return this._container;\n }\n\n /**\n * Sets the popup's content to a string of text.\n *\n * This function creates a [Text](https://developer.mozilla.org/en-US/docs/Web/API/Text) node in the DOM,\n * so it cannot insert raw HTML. Use this method for security against XSS\n * if the popup content is user-provided.\n *\n * @param text Textual content for the popup.\n * @returns {Popup} `this`\n * @example\n * var popup = new mapboxgl.Popup()\n * .setLngLat(e.lngLat)\n * .setText('Hello, world!')\n * .addTo(map);\n */\n setText(text: string) {\n return this.setDOMContent(window.document.createTextNode(text));\n }\n\n /**\n * Sets the popup's content to the HTML provided as a string.\n *\n * This method does not perform HTML filtering or sanitization, and must be\n * used only with trusted content. Consider {@link Popup#setText} if\n * the content is an untrusted text string.\n *\n * @param html A string representing HTML content for the popup.\n * @returns {Popup} `this`\n * @example\n * var popup = new mapboxgl.Popup()\n * .setLngLat(e.lngLat)\n * .setHTML(\"

Hello World!

\")\n * .addTo(map);\n * @see [Display a popup](https://docs.mapbox.com/mapbox-gl-js/example/popup/)\n * @see [Display a popup on hover](https://docs.mapbox.com/mapbox-gl-js/example/popup-on-hover/)\n * @see [Display a popup on click](https://docs.mapbox.com/mapbox-gl-js/example/popup-on-click/)\n * @see [Attach a popup to a marker instance](https://docs.mapbox.com/mapbox-gl-js/example/set-popup/)\n */\n setHTML(html: string) {\n const frag = window.document.createDocumentFragment();\n const temp = window.document.createElement('body');\n let child;\n temp.innerHTML = html;\n while (true) {\n child = temp.firstChild;\n if (!child) break;\n frag.appendChild(child);\n }\n\n return this.setDOMContent(frag);\n }\n\n /**\n * Returns the popup's maximum width.\n *\n * @returns {string} The maximum width of the popup.\n */\n getMaxWidth() {\n return this._container && this._container.style.maxWidth;\n }\n\n /**\n * Sets the popup's maximum width. This is setting the CSS property `max-width`.\n * Available values can be found here: https://developer.mozilla.org/en-US/docs/Web/CSS/max-width\n *\n * @param maxWidth A string representing the value for the maximum width.\n * @returns {Popup} `this`\n */\n setMaxWidth(maxWidth: string) {\n this.options.maxWidth = maxWidth;\n this._update();\n return this;\n }\n\n /**\n * Sets the popup's content to the element provided as a DOM node.\n *\n * @param htmlNode A DOM node to be used as content for the popup.\n * @returns {Popup} `this`\n * @example\n * // create an element with the popup content\n * var div = window.document.createElement('div');\n * div.innerHTML = 'Hello, world!';\n * var popup = new mapboxgl.Popup()\n * .setLngLat(e.lngLat)\n * .setDOMContent(div)\n * .addTo(map);\n */\n setDOMContent(htmlNode: Node) {\n if (this._content) {\n // Clear out children first.\n while (this._content.hasChildNodes()) {\n if (this._content.firstChild) {\n this._content.removeChild(this._content.firstChild);\n }\n }\n } else {\n this._content = DOM.create('div', 'mapboxgl-popup-content', this._container);\n }\n\n // The close button should be the last tabbable element inside the popup for a good keyboard UX.\n this._content.appendChild(htmlNode);\n this._createCloseButton();\n this._update();\n this._focusFirstElement();\n return this;\n }\n\n /**\n * Adds a CSS class to the popup container element.\n *\n * @param {string} className Non-empty string with CSS class name to add to popup container\n *\n * @example\n * let popup = new mapboxgl.Popup()\n * popup.addClassName('some-class')\n */\n addClassName(className: string) {\n if (this._container) {\n this._container.classList.add(className);\n }\n }\n\n /**\n * Removes a CSS class from the popup container element.\n *\n * @param {string} className Non-empty string with CSS class name to remove from popup container\n *\n * @example\n * let popup = new mapboxgl.Popup()\n * popup.removeClassName('some-class')\n */\n removeClassName(className: string) {\n if (this._container) {\n this._container.classList.remove(className);\n }\n }\n\n /**\n * Sets the popup's offset.\n *\n * @param offset Sets the popup's offset.\n * @returns {Popup} `this`\n */\n setOffset (offset?: Offset) {\n this.options.offset = offset;\n this._update();\n return this;\n }\n\n /**\n * Add or remove the given CSS class on the popup container, depending on whether the container currently has that class.\n *\n * @param {string} className Non-empty string with CSS class name to add/remove\n *\n * @returns {boolean} if the class was removed return false, if class was added, then return true\n *\n * @example\n * let popup = new mapboxgl.Popup()\n * popup.toggleClassName('toggleClass')\n */\n toggleClassName(className: string) {\n if (this._container) {\n return this._container.classList.toggle(className);\n }\n }\n\n _createCloseButton() {\n if (this.options.closeButton) {\n this._closeButton = DOM.create('button', 'mapboxgl-popup-close-button', this._content);\n this._closeButton.type = 'button';\n this._closeButton.setAttribute('aria-label', 'Close popup');\n this._closeButton.innerHTML = '×';\n this._closeButton.addEventListener('click', this._onClose);\n }\n }\n\n _onMouseUp(event: MapMouseEvent) {\n this._update(event.point);\n }\n\n _onMouseMove(event: MapMouseEvent) {\n this._update(event.point);\n }\n\n _onDrag(event: MapMouseEvent) {\n this._update(event.point);\n }\n\n _update(cursor: ?PointLike) {\n const hasPosition = this._lngLat || this._trackPointer;\n\n if (!this._map || !hasPosition || !this._content) { return; }\n\n if (!this._container) {\n this._container = DOM.create('div', 'mapboxgl-popup', this._map.getContainer());\n this._tip = DOM.create('div', 'mapboxgl-popup-tip', this._container);\n this._container.appendChild(this._content);\n if (this.options.className) {\n this.options.className.split(' ').forEach(name =>\n this._container.classList.add(name));\n }\n\n if (this._trackPointer) {\n this._container.classList.add('mapboxgl-popup-track-pointer');\n }\n }\n\n if (this.options.maxWidth && this._container.style.maxWidth !== this.options.maxWidth) {\n this._container.style.maxWidth = this.options.maxWidth;\n }\n\n if (this._map.transform.renderWorldCopies && !this._trackPointer) {\n this._lngLat = smartWrap(this._lngLat, this._pos, this._map.transform);\n }\n\n if (this._trackPointer && !cursor) return;\n\n const pos = this._pos = this._trackPointer && cursor ? cursor : this._map.project(this._lngLat);\n\n let anchor: ?Anchor = this.options.anchor;\n const offset = normalizeOffset(this.options.offset);\n\n if (!anchor) {\n const width = this._container.offsetWidth;\n const height = this._container.offsetHeight;\n let anchorComponents;\n\n if (pos.y + offset.bottom.y < height) {\n anchorComponents = ['top'];\n } else if (pos.y > this._map.transform.height - height) {\n anchorComponents = ['bottom'];\n } else {\n anchorComponents = [];\n }\n\n if (pos.x < width / 2) {\n anchorComponents.push('left');\n } else if (pos.x > this._map.transform.width - width / 2) {\n anchorComponents.push('right');\n }\n\n if (anchorComponents.length === 0) {\n anchor = 'bottom';\n } else {\n anchor = (anchorComponents.join('-'): any);\n }\n }\n\n const offsetedPos = pos.add(offset[anchor]).round();\n DOM.setTransform(this._container, `${anchorTranslate[anchor]} translate(${offsetedPos.x}px,${offsetedPos.y}px)`);\n applyAnchorClass(this._container, anchor, 'popup');\n }\n\n _focusFirstElement() {\n if (!this.options.focusAfterOpen || !this._container) return;\n\n const firstFocusable = this._container.querySelector(focusQuerySelector);\n\n if (firstFocusable) firstFocusable.focus();\n }\n\n _onClose() {\n this.remove();\n }\n}\n\nfunction normalizeOffset(offset: ?Offset) {\n if (!offset) {\n return normalizeOffset(new Point(0, 0));\n\n } else if (typeof offset === 'number') {\n // input specifies a radius from which to calculate offsets at all positions\n const cornerOffset = Math.round(Math.sqrt(0.5 * Math.pow(offset, 2)));\n return {\n 'center': new Point(0, 0),\n 'top': new Point(0, offset),\n 'top-left': new Point(cornerOffset, cornerOffset),\n 'top-right': new Point(-cornerOffset, cornerOffset),\n 'bottom': new Point(0, -offset),\n 'bottom-left': new Point(cornerOffset, -cornerOffset),\n 'bottom-right': new Point(-cornerOffset, -cornerOffset),\n 'left': new Point(offset, 0),\n 'right': new Point(-offset, 0)\n };\n\n } else if (offset instanceof Point || Array.isArray(offset)) {\n // input specifies a single offset to be applied to all positions\n const convertedOffset = Point.convert(offset);\n return {\n 'center': convertedOffset,\n 'top': convertedOffset,\n 'top-left': convertedOffset,\n 'top-right': convertedOffset,\n 'bottom': convertedOffset,\n 'bottom-left': convertedOffset,\n 'bottom-right': convertedOffset,\n 'left': convertedOffset,\n 'right': convertedOffset\n };\n\n } else {\n // input specifies an offset per position\n return {\n 'center': Point.convert(offset['center'] || [0, 0]),\n 'top': Point.convert(offset['top'] || [0, 0]),\n 'top-left': Point.convert(offset['top-left'] || [0, 0]),\n 'top-right': Point.convert(offset['top-right'] || [0, 0]),\n 'bottom': Point.convert(offset['bottom'] || [0, 0]),\n 'bottom-left': Point.convert(offset['bottom-left'] || [0, 0]),\n 'bottom-right': Point.convert(offset['bottom-right'] || [0, 0]),\n 'left': Point.convert(offset['left'] || [0, 0]),\n 'right': Point.convert(offset['right'] || [0, 0])\n };\n }\n}\n", "// @flow\n\nimport assert from 'assert';\nimport supported from '@mapbox/mapbox-gl-supported';\n\nimport {version} from '../package.json';\nimport Map from './ui/map';\nimport NavigationControl from './ui/control/navigation_control';\nimport GeolocateControl from './ui/control/geolocate_control';\nimport AttributionControl from './ui/control/attribution_control';\nimport ScaleControl from './ui/control/scale_control';\nimport FullscreenControl from './ui/control/fullscreen_control';\nimport Popup from './ui/popup';\nimport Marker from './ui/marker';\nimport Style from './style/style';\nimport LngLat from './geo/lng_lat';\nimport LngLatBounds from './geo/lng_lat_bounds';\nimport Point from '@mapbox/point-geometry';\nimport MercatorCoordinate from './geo/mercator_coordinate';\nimport {Evented} from './util/evented';\nimport config from './util/config';\nimport {Debug} from './util/debug';\nimport {isSafari} from './util/util';\nimport {setRTLTextPlugin, getRTLTextPluginStatus} from './source/rtl_text_plugin';\nimport WorkerPool from './util/worker_pool';\nimport {prewarm, clearPrewarmedResources} from './util/global_worker_pool';\nimport {clearTileCache} from './util/tile_request_cache';\nimport {PerformanceUtils} from './util/performance';\n\nconst exported = {\n version,\n supported,\n setRTLTextPlugin,\n getRTLTextPluginStatus,\n Map,\n NavigationControl,\n GeolocateControl,\n AttributionControl,\n ScaleControl,\n FullscreenControl,\n Popup,\n Marker,\n Style,\n LngLat,\n LngLatBounds,\n Point,\n MercatorCoordinate,\n Evented,\n config,\n /**\n * Initializes resources like WebWorkers that can be shared across maps to lower load\n * times in some situations. `mapboxgl.workerUrl` and `mapboxgl.workerCount`, if being\n * used, must be set before `prewarm()` is called to have an effect.\n *\n * By default, the lifecycle of these resources is managed automatically, and they are\n * lazily initialized when a Map is first created. By invoking `prewarm()`, these\n * resources will be created ahead of time, and will not be cleared when the last Map\n * is removed from the page. This allows them to be re-used by new Map instances that\n * are created later. They can be manually cleared by calling\n * `mapboxgl.clearPrewarmedResources()`. This is only necessary if your web page remains\n * active but stops using maps altogether.\n *\n * This is primarily useful when using GL-JS maps in a single page app, wherein a user\n * would navigate between various views that can cause Map instances to constantly be\n * created and destroyed.\n *\n * @function prewarm\n * @example\n * mapboxgl.prewarm()\n */\n prewarm,\n /**\n * Clears up resources that have previously been created by `mapboxgl.prewarm()`.\n * Note that this is typically not necessary. You should only call this function\n * if you expect the user of your app to not return to a Map view at any point\n * in your application.\n *\n * @function clearPrewarmedResources\n * @example\n * mapboxgl.clearPrewarmedResources()\n */\n clearPrewarmedResources,\n\n /**\n * Gets and sets the map's [access token](https://www.mapbox.com/help/define-access-token/).\n *\n * @var {string} accessToken\n * @returns {string} The currently set access token.\n * @example\n * mapboxgl.accessToken = myAccessToken;\n * @see [Display a map](https://www.mapbox.com/mapbox-gl-js/examples/)\n */\n get accessToken(): ?string {\n return config.ACCESS_TOKEN;\n },\n\n set accessToken(token: string) {\n config.ACCESS_TOKEN = token;\n },\n\n /**\n * Gets and sets the map's default API URL for requesting tiles, styles, sprites, and glyphs\n *\n * @var {string} baseApiUrl\n * @returns {string} The current base API URL.\n * @example\n * mapboxgl.baseApiUrl = 'https://api.mapbox.com';\n */\n get baseApiUrl(): ?string {\n return config.API_URL;\n },\n\n set baseApiUrl(url: string) {\n config.API_URL = url;\n },\n\n /**\n * Gets and sets the number of web workers instantiated on a page with GL JS maps.\n * By default, it is set to half the number of CPU cores (capped at 6).\n * Make sure to set this property before creating any map instances for it to have effect.\n *\n * @var {string} workerCount\n * @returns {number} Number of workers currently configured.\n * @example\n * mapboxgl.workerCount = 2;\n */\n get workerCount(): number {\n return WorkerPool.workerCount;\n },\n\n set workerCount(count: number) {\n WorkerPool.workerCount = count;\n },\n\n /**\n * Gets and sets the maximum number of images (raster tiles, sprites, icons) to load in parallel,\n * which affects performance in raster-heavy maps. 16 by default.\n *\n * @var {string} maxParallelImageRequests\n * @returns {number} Number of parallel requests currently configured.\n * @example\n * mapboxgl.maxParallelImageRequests = 10;\n */\n get maxParallelImageRequests(): number {\n return config.MAX_PARALLEL_IMAGE_REQUESTS;\n },\n\n set maxParallelImageRequests(numRequests: number) {\n config.MAX_PARALLEL_IMAGE_REQUESTS = numRequests;\n },\n\n /**\n * Clears browser storage used by this library. Using this method flushes the Mapbox tile\n * cache that is managed by this library. Tiles may still be cached by the browser\n * in some cases.\n *\n * This API is supported on browsers where the [`Cache` API](https://developer.mozilla.org/en-US/docs/Web/API/Cache)\n * is supported and enabled. This includes all major browsers when pages are served over\n * `https://`, except Internet Explorer and Edge Mobile.\n *\n * When called in unsupported browsers or environments (private or incognito mode), the\n * callback will be called with an error argument.\n *\n * @function clearStorage\n * @param {Function} callback Called with an error argument if there is an error.\n * @example\n * mapboxgl.clearStorage();\n */\n clearStorage(callback?: (err: ?Error) => void) {\n clearTileCache(callback);\n },\n\n workerUrl: ''\n};\n\n//This gets automatically stripped out in production builds.\nDebug.extend(exported, {isSafari, getPerformanceMetrics: PerformanceUtils.getPerformanceMetrics});\n\n/**\n * The version of Mapbox GL JS in use as specified in `package.json`,\n * `CHANGELOG.md`, and the GitHub release.\n *\n * @var {string} version\n */\n\n/**\n * Test whether the browser [supports Mapbox GL JS](https://www.mapbox.com/help/mapbox-browser-support/#mapbox-gl-js).\n *\n * @function supported\n * @param {Object} [options]\n * @param {boolean} [options.failIfMajorPerformanceCaveat=false] If `true`,\n * the function will return `false` if the performance of Mapbox GL JS would\n * be dramatically worse than expected (e.g. a software WebGL renderer would be used).\n * @return {boolean}\n * @example\n * // Show an alert if the browser does not support Mapbox GL\n * if (!mapboxgl.supported()) {\n * alert('Your browser does not support Mapbox GL');\n * }\n * @see [Check for browser support](https://www.mapbox.com/mapbox-gl-js/example/check-for-support/)\n */\n\n/**\n * Sets the map's [RTL text plugin](https://www.mapbox.com/mapbox-gl-js/plugins/#mapbox-gl-rtl-text).\n * Necessary for supporting the Arabic and Hebrew languages, which are written right-to-left. Mapbox Studio loads this plugin by default.\n *\n * @function setRTLTextPlugin\n * @param {string} pluginURL URL pointing to the Mapbox RTL text plugin source.\n * @param {Function} callback Called with an error argument if there is an error.\n * @param {boolean} lazy If set to `true`, mapboxgl will defer loading the plugin until rtl text is encountered,\n * rtl text will then be rendered only after the plugin finishes loading.\n * @example\n * mapboxgl.setRTLTextPlugin('https://api.mapbox.com/mapbox-gl-js/plugins/mapbox-gl-rtl-text/v0.2.0/mapbox-gl-rtl-text.js');\n * @see [Add support for right-to-left scripts](https://www.mapbox.com/mapbox-gl-js/example/mapbox-gl-rtl-text/)\n */\n\n/**\n * Gets the map's [RTL text plugin](https://www.mapbox.com/mapbox-gl-js/plugins/#mapbox-gl-rtl-text) status.\n * The status can be `unavailable` (i.e. not requested or removed), `loading`, `loaded` or `error`.\n * If the status is `loaded` and the plugin is requested again, an error will be thrown.\n *\n * @function getRTLTextPluginStatus\n * @example\n * const pluginStatus = mapboxgl.getRTLTextPluginStatus();\n */\n\nexport default exported;\n\n// canary assert: used to confirm that asserts have been removed from production build\nassert(true, 'canary assert');\n", "//\n// Our custom intro provides a specialized \"define()\" function, called by the\n// AMD modules below, that sets up the worker blob URL and then executes the\n// main module, storing its exported value as 'mapboxgl'\n\n// The three \"chunks\" imported here are produced by a first Rollup pass,\n// which outputs them as AMD modules.\n\n// Shared dependencies, i.e.:\n/*\ndefine(['exports'], function (exports) {\n // Code for all common dependencies\n // Each module's exports are attached attached to 'exports' (with\n // names rewritten to avoid collisions, etc.)\n})\n*/\nimport './build/mapboxgl/shared';\n\n// Worker and its unique dependencies, i.e.:\n/*\ndefine(['./shared.js'], function (__shared__js) {\n // Code for worker script and its unique dependencies.\n // Expects the output of 'shared' module to be passed in as an argument,\n // since all references to common deps look like, e.g.,\n // __shared__js.shapeText().\n});\n*/\n// When this wrapper function is passed to our custom define() above,\n// it gets stringified, together with the shared wrapper (using\n// Function.toString()), and the resulting string of code is made into a\n// Blob URL that gets used by the main module to create the web workers.\nimport './build/mapboxgl/worker';\n\n// Main module and its unique dependencies\n/*\ndefine(['./shared.js'], function (__shared__js) {\n // Code for main GL JS module and its unique dependencies.\n // Expects the output of 'shared' module to be passed in as an argument,\n // since all references to common deps look like, e.g.,\n // __shared__js.shapeText().\n //\n // Returns the actual mapboxgl (i.e. src/index.js)\n});\n*/\nimport './build/mapboxgl/index';\n\nexport default mapboxgl;\n", "/**\n * Copyright (c) 2014-present, Facebook, Inc.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\nvar runtime = (function (exports) {\n \"use strict\";\n\n var Op = Object.prototype;\n var hasOwn = Op.hasOwnProperty;\n var defineProperty = Object.defineProperty || function (obj, key, desc) { obj[key] = desc.value; };\n var undefined; // More compressible than void 0.\n var $Symbol = typeof Symbol === \"function\" ? Symbol : {};\n var iteratorSymbol = $Symbol.iterator || \"@@iterator\";\n var asyncIteratorSymbol = $Symbol.asyncIterator || \"@@asyncIterator\";\n var toStringTagSymbol = $Symbol.toStringTag || \"@@toStringTag\";\n\n function define(obj, key, value) {\n Object.defineProperty(obj, key, {\n value: value,\n enumerable: true,\n configurable: true,\n writable: true\n });\n return obj[key];\n }\n try {\n // IE 8 has a broken Object.defineProperty that only works on DOM objects.\n define({}, \"\");\n } catch (err) {\n define = function(obj, key, value) {\n return obj[key] = value;\n };\n }\n\n function wrap(innerFn, outerFn, self, tryLocsList) {\n // If outerFn provided and outerFn.prototype is a Generator, then outerFn.prototype instanceof Generator.\n var protoGenerator = outerFn && outerFn.prototype instanceof Generator ? outerFn : Generator;\n var generator = Object.create(protoGenerator.prototype);\n var context = new Context(tryLocsList || []);\n\n // The ._invoke method unifies the implementations of the .next,\n // .throw, and .return methods.\n defineProperty(generator, \"_invoke\", { value: makeInvokeMethod(innerFn, self, context) });\n\n return generator;\n }\n exports.wrap = wrap;\n\n // Try/catch helper to minimize deoptimizations. Returns a completion\n // record like context.tryEntries[i].completion. This interface could\n // have been (and was previously) designed to take a closure to be\n // invoked without arguments, but in all the cases we care about we\n // already have an existing method we want to call, so there's no need\n // to create a new function object. We can even get away with assuming\n // the method takes exactly one argument, since that happens to be true\n // in every case, so we don't have to touch the arguments object. The\n // only additional allocation required is the completion record, which\n // has a stable shape and so hopefully should be cheap to allocate.\n function tryCatch(fn, obj, arg) {\n try {\n return { type: \"normal\", arg: fn.call(obj, arg) };\n } catch (err) {\n return { type: \"throw\", arg: err };\n }\n }\n\n var GenStateSuspendedStart = \"suspendedStart\";\n var GenStateSuspendedYield = \"suspendedYield\";\n var GenStateExecuting = \"executing\";\n var GenStateCompleted = \"completed\";\n\n // Returning this object from the innerFn has the same effect as\n // breaking out of the dispatch switch statement.\n var ContinueSentinel = {};\n\n // Dummy constructor functions that we use as the .constructor and\n // .constructor.prototype properties for functions that return Generator\n // objects. For full spec compliance, you may wish to configure your\n // minifier not to mangle the names of these two functions.\n function Generator() {}\n function GeneratorFunction() {}\n function GeneratorFunctionPrototype() {}\n\n // This is a polyfill for %IteratorPrototype% for environments that\n // don't natively support it.\n var IteratorPrototype = {};\n define(IteratorPrototype, iteratorSymbol, function () {\n return this;\n });\n\n var getProto = Object.getPrototypeOf;\n var NativeIteratorPrototype = getProto && getProto(getProto(values([])));\n if (NativeIteratorPrototype &&\n NativeIteratorPrototype !== Op &&\n hasOwn.call(NativeIteratorPrototype, iteratorSymbol)) {\n // This environment has a native %IteratorPrototype%; use it instead\n // of the polyfill.\n IteratorPrototype = NativeIteratorPrototype;\n }\n\n var Gp = GeneratorFunctionPrototype.prototype =\n Generator.prototype = Object.create(IteratorPrototype);\n GeneratorFunction.prototype = GeneratorFunctionPrototype;\n defineProperty(Gp, \"constructor\", { value: GeneratorFunctionPrototype, configurable: true });\n defineProperty(\n GeneratorFunctionPrototype,\n \"constructor\",\n { value: GeneratorFunction, configurable: true }\n );\n GeneratorFunction.displayName = define(\n GeneratorFunctionPrototype,\n toStringTagSymbol,\n \"GeneratorFunction\"\n );\n\n // Helper for defining the .next, .throw, and .return methods of the\n // Iterator interface in terms of a single ._invoke method.\n function defineIteratorMethods(prototype) {\n [\"next\", \"throw\", \"return\"].forEach(function(method) {\n define(prototype, method, function(arg) {\n return this._invoke(method, arg);\n });\n });\n }\n\n exports.isGeneratorFunction = function(genFun) {\n var ctor = typeof genFun === \"function\" && genFun.constructor;\n return ctor\n ? ctor === GeneratorFunction ||\n // For the native GeneratorFunction constructor, the best we can\n // do is to check its .name property.\n (ctor.displayName || ctor.name) === \"GeneratorFunction\"\n : false;\n };\n\n exports.mark = function(genFun) {\n if (Object.setPrototypeOf) {\n Object.setPrototypeOf(genFun, GeneratorFunctionPrototype);\n } else {\n genFun.__proto__ = GeneratorFunctionPrototype;\n define(genFun, toStringTagSymbol, \"GeneratorFunction\");\n }\n genFun.prototype = Object.create(Gp);\n return genFun;\n };\n\n // Within the body of any async function, `await x` is transformed to\n // `yield regeneratorRuntime.awrap(x)`, so that the runtime can test\n // `hasOwn.call(value, \"__await\")` to determine if the yielded value is\n // meant to be awaited.\n exports.awrap = function(arg) {\n return { __await: arg };\n };\n\n function AsyncIterator(generator, PromiseImpl) {\n function invoke(method, arg, resolve, reject) {\n var record = tryCatch(generator[method], generator, arg);\n if (record.type === \"throw\") {\n reject(record.arg);\n } else {\n var result = record.arg;\n var value = result.value;\n if (value &&\n typeof value === \"object\" &&\n hasOwn.call(value, \"__await\")) {\n return PromiseImpl.resolve(value.__await).then(function(value) {\n invoke(\"next\", value, resolve, reject);\n }, function(err) {\n invoke(\"throw\", err, resolve, reject);\n });\n }\n\n return PromiseImpl.resolve(value).then(function(unwrapped) {\n // When a yielded Promise is resolved, its final value becomes\n // the .value of the Promise<{value,done}> result for the\n // current iteration.\n result.value = unwrapped;\n resolve(result);\n }, function(error) {\n // If a rejected Promise was yielded, throw the rejection back\n // into the async generator function so it can be handled there.\n return invoke(\"throw\", error, resolve, reject);\n });\n }\n }\n\n var previousPromise;\n\n function enqueue(method, arg) {\n function callInvokeWithMethodAndArg() {\n return new PromiseImpl(function(resolve, reject) {\n invoke(method, arg, resolve, reject);\n });\n }\n\n return previousPromise =\n // If enqueue has been called before, then we want to wait until\n // all previous Promises have been resolved before calling invoke,\n // so that results are always delivered in the correct order. If\n // enqueue has not been called before, then it is important to\n // call invoke immediately, without waiting on a callback to fire,\n // so that the async generator function has the opportunity to do\n // any necessary setup in a predictable way. This predictability\n // is why the Promise constructor synchronously invokes its\n // executor callback, and why async functions synchronously\n // execute code before the first await. Since we implement simple\n // async functions in terms of async generators, it is especially\n // important to get this right, even though it requires care.\n previousPromise ? previousPromise.then(\n callInvokeWithMethodAndArg,\n // Avoid propagating failures to Promises returned by later\n // invocations of the iterator.\n callInvokeWithMethodAndArg\n ) : callInvokeWithMethodAndArg();\n }\n\n // Define the unified helper method that is used to implement .next,\n // .throw, and .return (see defineIteratorMethods).\n defineProperty(this, \"_invoke\", { value: enqueue });\n }\n\n defineIteratorMethods(AsyncIterator.prototype);\n define(AsyncIterator.prototype, asyncIteratorSymbol, function () {\n return this;\n });\n exports.AsyncIterator = AsyncIterator;\n\n // Note that simple async functions are implemented on top of\n // AsyncIterator objects; they just return a Promise for the value of\n // the final result produced by the iterator.\n exports.async = function(innerFn, outerFn, self, tryLocsList, PromiseImpl) {\n if (PromiseImpl === void 0) PromiseImpl = Promise;\n\n var iter = new AsyncIterator(\n wrap(innerFn, outerFn, self, tryLocsList),\n PromiseImpl\n );\n\n return exports.isGeneratorFunction(outerFn)\n ? iter // If outerFn is a generator, return the full iterator.\n : iter.next().then(function(result) {\n return result.done ? result.value : iter.next();\n });\n };\n\n function makeInvokeMethod(innerFn, self, context) {\n var state = GenStateSuspendedStart;\n\n return function invoke(method, arg) {\n if (state === GenStateExecuting) {\n throw new Error(\"Generator is already running\");\n }\n\n if (state === GenStateCompleted) {\n if (method === \"throw\") {\n throw arg;\n }\n\n // Be forgiving, per 25.3.3.3.3 of the spec:\n // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-generatorresume\n return doneResult();\n }\n\n context.method = method;\n context.arg = arg;\n\n while (true) {\n var delegate = context.delegate;\n if (delegate) {\n var delegateResult = maybeInvokeDelegate(delegate, context);\n if (delegateResult) {\n if (delegateResult === ContinueSentinel) continue;\n return delegateResult;\n }\n }\n\n if (context.method === \"next\") {\n // Setting context._sent for legacy support of Babel's\n // function.sent implementation.\n context.sent = context._sent = context.arg;\n\n } else if (context.method === \"throw\") {\n if (state === GenStateSuspendedStart) {\n state = GenStateCompleted;\n throw context.arg;\n }\n\n context.dispatchException(context.arg);\n\n } else if (context.method === \"return\") {\n context.abrupt(\"return\", context.arg);\n }\n\n state = GenStateExecuting;\n\n var record = tryCatch(innerFn, self, context);\n if (record.type === \"normal\") {\n // If an exception is thrown from innerFn, we leave state ===\n // GenStateExecuting and loop back for another invocation.\n state = context.done\n ? GenStateCompleted\n : GenStateSuspendedYield;\n\n if (record.arg === ContinueSentinel) {\n continue;\n }\n\n return {\n value: record.arg,\n done: context.done\n };\n\n } else if (record.type === \"throw\") {\n state = GenStateCompleted;\n // Dispatch the exception by looping back around to the\n // context.dispatchException(context.arg) call above.\n context.method = \"throw\";\n context.arg = record.arg;\n }\n }\n };\n }\n\n // Call delegate.iterator[context.method](context.arg) and handle the\n // result, either by returning a { value, done } result from the\n // delegate iterator, or by modifying context.method and context.arg,\n // setting context.delegate to null, and returning the ContinueSentinel.\n function maybeInvokeDelegate(delegate, context) {\n var methodName = context.method;\n var method = delegate.iterator[methodName];\n if (method === undefined) {\n // A .throw or .return when the delegate iterator has no .throw\n // method, or a missing .next mehtod, always terminate the\n // yield* loop.\n context.delegate = null;\n\n // Note: [\"return\"] must be used for ES3 parsing compatibility.\n if (methodName === \"throw\" && delegate.iterator[\"return\"]) {\n // If the delegate iterator has a return method, give it a\n // chance to clean up.\n context.method = \"return\";\n context.arg = undefined;\n maybeInvokeDelegate(delegate, context);\n\n if (context.method === \"throw\") {\n // If maybeInvokeDelegate(context) changed context.method from\n // \"return\" to \"throw\", let that override the TypeError below.\n return ContinueSentinel;\n }\n }\n if (methodName !== \"return\") {\n context.method = \"throw\";\n context.arg = new TypeError(\n \"The iterator does not provide a '\" + methodName + \"' method\");\n }\n\n return ContinueSentinel;\n }\n\n var record = tryCatch(method, delegate.iterator, context.arg);\n\n if (record.type === \"throw\") {\n context.method = \"throw\";\n context.arg = record.arg;\n context.delegate = null;\n return ContinueSentinel;\n }\n\n var info = record.arg;\n\n if (! info) {\n context.method = \"throw\";\n context.arg = new TypeError(\"iterator result is not an object\");\n context.delegate = null;\n return ContinueSentinel;\n }\n\n if (info.done) {\n // Assign the result of the finished delegate to the temporary\n // variable specified by delegate.resultName (see delegateYield).\n context[delegate.resultName] = info.value;\n\n // Resume execution at the desired location (see delegateYield).\n context.next = delegate.nextLoc;\n\n // If context.method was \"throw\" but the delegate handled the\n // exception, let the outer generator proceed normally. If\n // context.method was \"next\", forget context.arg since it has been\n // \"consumed\" by the delegate iterator. If context.method was\n // \"return\", allow the original .return call to continue in the\n // outer generator.\n if (context.method !== \"return\") {\n context.method = \"next\";\n context.arg = undefined;\n }\n\n } else {\n // Re-yield the result returned by the delegate method.\n return info;\n }\n\n // The delegate iterator is finished, so forget it and continue with\n // the outer generator.\n context.delegate = null;\n return ContinueSentinel;\n }\n\n // Define Generator.prototype.{next,throw,return} in terms of the\n // unified ._invoke helper method.\n defineIteratorMethods(Gp);\n\n define(Gp, toStringTagSymbol, \"Generator\");\n\n // A Generator should always return itself as the iterator object when the\n // @@iterator function is called on it. Some browsers' implementations of the\n // iterator prototype chain incorrectly implement this, causing the Generator\n // object to not be returned from this call. This ensures that doesn't happen.\n // See https://github.com/facebook/regenerator/issues/274 for more details.\n define(Gp, iteratorSymbol, function() {\n return this;\n });\n\n define(Gp, \"toString\", function() {\n return \"[object Generator]\";\n });\n\n function pushTryEntry(locs) {\n var entry = { tryLoc: locs[0] };\n\n if (1 in locs) {\n entry.catchLoc = locs[1];\n }\n\n if (2 in locs) {\n entry.finallyLoc = locs[2];\n entry.afterLoc = locs[3];\n }\n\n this.tryEntries.push(entry);\n }\n\n function resetTryEntry(entry) {\n var record = entry.completion || {};\n record.type = \"normal\";\n delete record.arg;\n entry.completion = record;\n }\n\n function Context(tryLocsList) {\n // The root entry object (effectively a try statement without a catch\n // or a finally block) gives us a place to store values thrown from\n // locations where there is no enclosing try statement.\n this.tryEntries = [{ tryLoc: \"root\" }];\n tryLocsList.forEach(pushTryEntry, this);\n this.reset(true);\n }\n\n exports.keys = function(val) {\n var object = Object(val);\n var keys = [];\n for (var key in object) {\n keys.push(key);\n }\n keys.reverse();\n\n // Rather than returning an object with a next method, we keep\n // things simple and return the next function itself.\n return function next() {\n while (keys.length) {\n var key = keys.pop();\n if (key in object) {\n next.value = key;\n next.done = false;\n return next;\n }\n }\n\n // To avoid creating an additional object, we just hang the .value\n // and .done properties off the next function object itself. This\n // also ensures that the minifier will not anonymize the function.\n next.done = true;\n return next;\n };\n };\n\n function values(iterable) {\n if (iterable) {\n var iteratorMethod = iterable[iteratorSymbol];\n if (iteratorMethod) {\n return iteratorMethod.call(iterable);\n }\n\n if (typeof iterable.next === \"function\") {\n return iterable;\n }\n\n if (!isNaN(iterable.length)) {\n var i = -1, next = function next() {\n while (++i < iterable.length) {\n if (hasOwn.call(iterable, i)) {\n next.value = iterable[i];\n next.done = false;\n return next;\n }\n }\n\n next.value = undefined;\n next.done = true;\n\n return next;\n };\n\n return next.next = next;\n }\n }\n\n // Return an iterator with no values.\n return { next: doneResult };\n }\n exports.values = values;\n\n function doneResult() {\n return { value: undefined, done: true };\n }\n\n Context.prototype = {\n constructor: Context,\n\n reset: function(skipTempReset) {\n this.prev = 0;\n this.next = 0;\n // Resetting context._sent for legacy support of Babel's\n // function.sent implementation.\n this.sent = this._sent = undefined;\n this.done = false;\n this.delegate = null;\n\n this.method = \"next\";\n this.arg = undefined;\n\n this.tryEntries.forEach(resetTryEntry);\n\n if (!skipTempReset) {\n for (var name in this) {\n // Not sure about the optimal order of these conditions:\n if (name.charAt(0) === \"t\" &&\n hasOwn.call(this, name) &&\n !isNaN(+name.slice(1))) {\n this[name] = undefined;\n }\n }\n }\n },\n\n stop: function() {\n this.done = true;\n\n var rootEntry = this.tryEntries[0];\n var rootRecord = rootEntry.completion;\n if (rootRecord.type === \"throw\") {\n throw rootRecord.arg;\n }\n\n return this.rval;\n },\n\n dispatchException: function(exception) {\n if (this.done) {\n throw exception;\n }\n\n var context = this;\n function handle(loc, caught) {\n record.type = \"throw\";\n record.arg = exception;\n context.next = loc;\n\n if (caught) {\n // If the dispatched exception was caught by a catch block,\n // then let that catch block handle the exception normally.\n context.method = \"next\";\n context.arg = undefined;\n }\n\n return !! caught;\n }\n\n for (var i = this.tryEntries.length - 1; i >= 0; --i) {\n var entry = this.tryEntries[i];\n var record = entry.completion;\n\n if (entry.tryLoc === \"root\") {\n // Exception thrown outside of any try block that could handle\n // it, so set the completion value of the entire function to\n // throw the exception.\n return handle(\"end\");\n }\n\n if (entry.tryLoc <= this.prev) {\n var hasCatch = hasOwn.call(entry, \"catchLoc\");\n var hasFinally = hasOwn.call(entry, \"finallyLoc\");\n\n if (hasCatch && hasFinally) {\n if (this.prev < entry.catchLoc) {\n return handle(entry.catchLoc, true);\n } else if (this.prev < entry.finallyLoc) {\n return handle(entry.finallyLoc);\n }\n\n } else if (hasCatch) {\n if (this.prev < entry.catchLoc) {\n return handle(entry.catchLoc, true);\n }\n\n } else if (hasFinally) {\n if (this.prev < entry.finallyLoc) {\n return handle(entry.finallyLoc);\n }\n\n } else {\n throw new Error(\"try statement without catch or finally\");\n }\n }\n }\n },\n\n abrupt: function(type, arg) {\n for (var i = this.tryEntries.length - 1; i >= 0; --i) {\n var entry = this.tryEntries[i];\n if (entry.tryLoc <= this.prev &&\n hasOwn.call(entry, \"finallyLoc\") &&\n this.prev < entry.finallyLoc) {\n var finallyEntry = entry;\n break;\n }\n }\n\n if (finallyEntry &&\n (type === \"break\" ||\n type === \"continue\") &&\n finallyEntry.tryLoc <= arg &&\n arg <= finallyEntry.finallyLoc) {\n // Ignore the finally entry if control is not jumping to a\n // location outside the try/catch block.\n finallyEntry = null;\n }\n\n var record = finallyEntry ? finallyEntry.completion : {};\n record.type = type;\n record.arg = arg;\n\n if (finallyEntry) {\n this.method = \"next\";\n this.next = finallyEntry.finallyLoc;\n return ContinueSentinel;\n }\n\n return this.complete(record);\n },\n\n complete: function(record, afterLoc) {\n if (record.type === \"throw\") {\n throw record.arg;\n }\n\n if (record.type === \"break\" ||\n record.type === \"continue\") {\n this.next = record.arg;\n } else if (record.type === \"return\") {\n this.rval = this.arg = record.arg;\n this.method = \"return\";\n this.next = \"end\";\n } else if (record.type === \"normal\" && afterLoc) {\n this.next = afterLoc;\n }\n\n return ContinueSentinel;\n },\n\n finish: function(finallyLoc) {\n for (var i = this.tryEntries.length - 1; i >= 0; --i) {\n var entry = this.tryEntries[i];\n if (entry.finallyLoc === finallyLoc) {\n this.complete(entry.completion, entry.afterLoc);\n resetTryEntry(entry);\n return ContinueSentinel;\n }\n }\n },\n\n \"catch\": function(tryLoc) {\n for (var i = this.tryEntries.length - 1; i >= 0; --i) {\n var entry = this.tryEntries[i];\n if (entry.tryLoc === tryLoc) {\n var record = entry.completion;\n if (record.type === \"throw\") {\n var thrown = record.arg;\n resetTryEntry(entry);\n }\n return thrown;\n }\n }\n\n // The context.catch method must only be called with a location\n // argument that corresponds to a known catch block.\n throw new Error(\"illegal catch attempt\");\n },\n\n delegateYield: function(iterable, resultName, nextLoc) {\n this.delegate = {\n iterator: values(iterable),\n resultName: resultName,\n nextLoc: nextLoc\n };\n\n if (this.method === \"next\") {\n // Deliberately forget the last sent value so that we don't\n // accidentally pass it on to the delegate.\n this.arg = undefined;\n }\n\n return ContinueSentinel;\n }\n };\n\n // Regardless of whether this script is executing as a CommonJS module\n // or not, return the runtime object so that we can declare the variable\n // regeneratorRuntime in the outer scope, which allows this module to be\n // injected easily by `bin/regenerator --include-runtime script.js`.\n return exports;\n\n}(\n // If this script is executing as a CommonJS module, use module.exports\n // as the regeneratorRuntime namespace. Otherwise create a new empty\n // object. Either way, the resulting object will be used to initialize\n // the regeneratorRuntime variable at the top of this file.\n typeof module === \"object\" ? module.exports : {}\n));\n\ntry {\n regeneratorRuntime = runtime;\n} catch (accidentalStrictMode) {\n // This module should not be running in strict mode, so the above\n // assignment should always work unless something is misconfigured. Just\n // in case runtime.js accidentally runs in strict mode, in modern engines\n // we can explicitly access globalThis. In older engines we can escape\n // strict mode using a global Function call. This could conceivably fail\n // if a Content Security Policy forbids using Function, but in that case\n // the proper solution is to fix the accidental strict mode problem. If\n // you've misconfigured your bundler to force strict mode and applied a\n // CSP to forbid Function, and you're not willing to fix either of those\n // problems, please detail your unique predicament in a GitHub issue.\n if (typeof globalThis === \"object\") {\n globalThis.regeneratorRuntime = runtime;\n } else {\n Function(\"r\", \"regeneratorRuntime = r\")(runtime);\n }\n}\n", "(function(global, factory) {\n typeof exports === \"object\" && typeof module !== \"undefined\" ? factory(exports) : typeof define === \"function\" && define.amd ? define([ \"exports\" ], factory) : factory(global.ActiveStorage = {});\n})(this, function(exports) {\n \"use strict\";\n function createCommonjsModule(fn, module) {\n return module = {\n exports: {}\n }, fn(module, module.exports), module.exports;\n }\n var sparkMd5 = createCommonjsModule(function(module, exports) {\n (function(factory) {\n {\n module.exports = factory();\n }\n })(function(undefined) {\n var hex_chr = [ \"0\", \"1\", \"2\", \"3\", \"4\", \"5\", \"6\", \"7\", \"8\", \"9\", \"a\", \"b\", \"c\", \"d\", \"e\", \"f\" ];\n function md5cycle(x, k) {\n var a = x[0], b = x[1], c = x[2], d = x[3];\n a += (b & c | ~b & d) + k[0] - 680876936 | 0;\n a = (a << 7 | a >>> 25) + b | 0;\n d += (a & b | ~a & c) + k[1] - 389564586 | 0;\n d = (d << 12 | d >>> 20) + a | 0;\n c += (d & a | ~d & b) + k[2] + 606105819 | 0;\n c = (c << 17 | c >>> 15) + d | 0;\n b += (c & d | ~c & a) + k[3] - 1044525330 | 0;\n b = (b << 22 | b >>> 10) + c | 0;\n a += (b & c | ~b & d) + k[4] - 176418897 | 0;\n a = (a << 7 | a >>> 25) + b | 0;\n d += (a & b | ~a & c) + k[5] + 1200080426 | 0;\n d = (d << 12 | d >>> 20) + a | 0;\n c += (d & a | ~d & b) + k[6] - 1473231341 | 0;\n c = (c << 17 | c >>> 15) + d | 0;\n b += (c & d | ~c & a) + k[7] - 45705983 | 0;\n b = (b << 22 | b >>> 10) + c | 0;\n a += (b & c | ~b & d) + k[8] + 1770035416 | 0;\n a = (a << 7 | a >>> 25) + b | 0;\n d += (a & b | ~a & c) + k[9] - 1958414417 | 0;\n d = (d << 12 | d >>> 20) + a | 0;\n c += (d & a | ~d & b) + k[10] - 42063 | 0;\n c = (c << 17 | c >>> 15) + d | 0;\n b += (c & d | ~c & a) + k[11] - 1990404162 | 0;\n b = (b << 22 | b >>> 10) + c | 0;\n a += (b & c | ~b & d) + k[12] + 1804603682 | 0;\n a = (a << 7 | a >>> 25) + b | 0;\n d += (a & b | ~a & c) + k[13] - 40341101 | 0;\n d = (d << 12 | d >>> 20) + a | 0;\n c += (d & a | ~d & b) + k[14] - 1502002290 | 0;\n c = (c << 17 | c >>> 15) + d | 0;\n b += (c & d | ~c & a) + k[15] + 1236535329 | 0;\n b = (b << 22 | b >>> 10) + c | 0;\n a += (b & d | c & ~d) + k[1] - 165796510 | 0;\n a = (a << 5 | a >>> 27) + b | 0;\n d += (a & c | b & ~c) + k[6] - 1069501632 | 0;\n d = (d << 9 | d >>> 23) + a | 0;\n c += (d & b | a & ~b) + k[11] + 643717713 | 0;\n c = (c << 14 | c >>> 18) + d | 0;\n b += (c & a | d & ~a) + k[0] - 373897302 | 0;\n b = (b << 20 | b >>> 12) + c | 0;\n a += (b & d | c & ~d) + k[5] - 701558691 | 0;\n a = (a << 5 | a >>> 27) + b | 0;\n d += (a & c | b & ~c) + k[10] + 38016083 | 0;\n d = (d << 9 | d >>> 23) + a | 0;\n c += (d & b | a & ~b) + k[15] - 660478335 | 0;\n c = (c << 14 | c >>> 18) + d | 0;\n b += (c & a | d & ~a) + k[4] - 405537848 | 0;\n b = (b << 20 | b >>> 12) + c | 0;\n a += (b & d | c & ~d) + k[9] + 568446438 | 0;\n a = (a << 5 | a >>> 27) + b | 0;\n d += (a & c | b & ~c) + k[14] - 1019803690 | 0;\n d = (d << 9 | d >>> 23) + a | 0;\n c += (d & b | a & ~b) + k[3] - 187363961 | 0;\n c = (c << 14 | c >>> 18) + d | 0;\n b += (c & a | d & ~a) + k[8] + 1163531501 | 0;\n b = (b << 20 | b >>> 12) + c | 0;\n a += (b & d | c & ~d) + k[13] - 1444681467 | 0;\n a = (a << 5 | a >>> 27) + b | 0;\n d += (a & c | b & ~c) + k[2] - 51403784 | 0;\n d = (d << 9 | d >>> 23) + a | 0;\n c += (d & b | a & ~b) + k[7] + 1735328473 | 0;\n c = (c << 14 | c >>> 18) + d | 0;\n b += (c & a | d & ~a) + k[12] - 1926607734 | 0;\n b = (b << 20 | b >>> 12) + c | 0;\n a += (b ^ c ^ d) + k[5] - 378558 | 0;\n a = (a << 4 | a >>> 28) + b | 0;\n d += (a ^ b ^ c) + k[8] - 2022574463 | 0;\n d = (d << 11 | d >>> 21) + a | 0;\n c += (d ^ a ^ b) + k[11] + 1839030562 | 0;\n c = (c << 16 | c >>> 16) + d | 0;\n b += (c ^ d ^ a) + k[14] - 35309556 | 0;\n b = (b << 23 | b >>> 9) + c | 0;\n a += (b ^ c ^ d) + k[1] - 1530992060 | 0;\n a = (a << 4 | a >>> 28) + b | 0;\n d += (a ^ b ^ c) + k[4] + 1272893353 | 0;\n d = (d << 11 | d >>> 21) + a | 0;\n c += (d ^ a ^ b) + k[7] - 155497632 | 0;\n c = (c << 16 | c >>> 16) + d | 0;\n b += (c ^ d ^ a) + k[10] - 1094730640 | 0;\n b = (b << 23 | b >>> 9) + c | 0;\n a += (b ^ c ^ d) + k[13] + 681279174 | 0;\n a = (a << 4 | a >>> 28) + b | 0;\n d += (a ^ b ^ c) + k[0] - 358537222 | 0;\n d = (d << 11 | d >>> 21) + a | 0;\n c += (d ^ a ^ b) + k[3] - 722521979 | 0;\n c = (c << 16 | c >>> 16) + d | 0;\n b += (c ^ d ^ a) + k[6] + 76029189 | 0;\n b = (b << 23 | b >>> 9) + c | 0;\n a += (b ^ c ^ d) + k[9] - 640364487 | 0;\n a = (a << 4 | a >>> 28) + b | 0;\n d += (a ^ b ^ c) + k[12] - 421815835 | 0;\n d = (d << 11 | d >>> 21) + a | 0;\n c += (d ^ a ^ b) + k[15] + 530742520 | 0;\n c = (c << 16 | c >>> 16) + d | 0;\n b += (c ^ d ^ a) + k[2] - 995338651 | 0;\n b = (b << 23 | b >>> 9) + c | 0;\n a += (c ^ (b | ~d)) + k[0] - 198630844 | 0;\n a = (a << 6 | a >>> 26) + b | 0;\n d += (b ^ (a | ~c)) + k[7] + 1126891415 | 0;\n d = (d << 10 | d >>> 22) + a | 0;\n c += (a ^ (d | ~b)) + k[14] - 1416354905 | 0;\n c = (c << 15 | c >>> 17) + d | 0;\n b += (d ^ (c | ~a)) + k[5] - 57434055 | 0;\n b = (b << 21 | b >>> 11) + c | 0;\n a += (c ^ (b | ~d)) + k[12] + 1700485571 | 0;\n a = (a << 6 | a >>> 26) + b | 0;\n d += (b ^ (a | ~c)) + k[3] - 1894986606 | 0;\n d = (d << 10 | d >>> 22) + a | 0;\n c += (a ^ (d | ~b)) + k[10] - 1051523 | 0;\n c = (c << 15 | c >>> 17) + d | 0;\n b += (d ^ (c | ~a)) + k[1] - 2054922799 | 0;\n b = (b << 21 | b >>> 11) + c | 0;\n a += (c ^ (b | ~d)) + k[8] + 1873313359 | 0;\n a = (a << 6 | a >>> 26) + b | 0;\n d += (b ^ (a | ~c)) + k[15] - 30611744 | 0;\n d = (d << 10 | d >>> 22) + a | 0;\n c += (a ^ (d | ~b)) + k[6] - 1560198380 | 0;\n c = (c << 15 | c >>> 17) + d | 0;\n b += (d ^ (c | ~a)) + k[13] + 1309151649 | 0;\n b = (b << 21 | b >>> 11) + c | 0;\n a += (c ^ (b | ~d)) + k[4] - 145523070 | 0;\n a = (a << 6 | a >>> 26) + b | 0;\n d += (b ^ (a | ~c)) + k[11] - 1120210379 | 0;\n d = (d << 10 | d >>> 22) + a | 0;\n c += (a ^ (d | ~b)) + k[2] + 718787259 | 0;\n c = (c << 15 | c >>> 17) + d | 0;\n b += (d ^ (c | ~a)) + k[9] - 343485551 | 0;\n b = (b << 21 | b >>> 11) + c | 0;\n x[0] = a + x[0] | 0;\n x[1] = b + x[1] | 0;\n x[2] = c + x[2] | 0;\n x[3] = d + x[3] | 0;\n }\n function md5blk(s) {\n var md5blks = [], i;\n for (i = 0; i < 64; i += 4) {\n md5blks[i >> 2] = s.charCodeAt(i) + (s.charCodeAt(i + 1) << 8) + (s.charCodeAt(i + 2) << 16) + (s.charCodeAt(i + 3) << 24);\n }\n return md5blks;\n }\n function md5blk_array(a) {\n var md5blks = [], i;\n for (i = 0; i < 64; i += 4) {\n md5blks[i >> 2] = a[i] + (a[i + 1] << 8) + (a[i + 2] << 16) + (a[i + 3] << 24);\n }\n return md5blks;\n }\n function md51(s) {\n var n = s.length, state = [ 1732584193, -271733879, -1732584194, 271733878 ], i, length, tail, tmp, lo, hi;\n for (i = 64; i <= n; i += 64) {\n md5cycle(state, md5blk(s.substring(i - 64, i)));\n }\n s = s.substring(i - 64);\n length = s.length;\n tail = [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ];\n for (i = 0; i < length; i += 1) {\n tail[i >> 2] |= s.charCodeAt(i) << (i % 4 << 3);\n }\n tail[i >> 2] |= 128 << (i % 4 << 3);\n if (i > 55) {\n md5cycle(state, tail);\n for (i = 0; i < 16; i += 1) {\n tail[i] = 0;\n }\n }\n tmp = n * 8;\n tmp = tmp.toString(16).match(/(.*?)(.{0,8})$/);\n lo = parseInt(tmp[2], 16);\n hi = parseInt(tmp[1], 16) || 0;\n tail[14] = lo;\n tail[15] = hi;\n md5cycle(state, tail);\n return state;\n }\n function md51_array(a) {\n var n = a.length, state = [ 1732584193, -271733879, -1732584194, 271733878 ], i, length, tail, tmp, lo, hi;\n for (i = 64; i <= n; i += 64) {\n md5cycle(state, md5blk_array(a.subarray(i - 64, i)));\n }\n a = i - 64 < n ? a.subarray(i - 64) : new Uint8Array(0);\n length = a.length;\n tail = [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ];\n for (i = 0; i < length; i += 1) {\n tail[i >> 2] |= a[i] << (i % 4 << 3);\n }\n tail[i >> 2] |= 128 << (i % 4 << 3);\n if (i > 55) {\n md5cycle(state, tail);\n for (i = 0; i < 16; i += 1) {\n tail[i] = 0;\n }\n }\n tmp = n * 8;\n tmp = tmp.toString(16).match(/(.*?)(.{0,8})$/);\n lo = parseInt(tmp[2], 16);\n hi = parseInt(tmp[1], 16) || 0;\n tail[14] = lo;\n tail[15] = hi;\n md5cycle(state, tail);\n return state;\n }\n function rhex(n) {\n var s = \"\", j;\n for (j = 0; j < 4; j += 1) {\n s += hex_chr[n >> j * 8 + 4 & 15] + hex_chr[n >> j * 8 & 15];\n }\n return s;\n }\n function hex(x) {\n var i;\n for (i = 0; i < x.length; i += 1) {\n x[i] = rhex(x[i]);\n }\n return x.join(\"\");\n }\n if (hex(md51(\"hello\")) !== \"5d41402abc4b2a76b9719d911017c592\") ;\n if (typeof ArrayBuffer !== \"undefined\" && !ArrayBuffer.prototype.slice) {\n (function() {\n function clamp(val, length) {\n val = val | 0 || 0;\n if (val < 0) {\n return Math.max(val + length, 0);\n }\n return Math.min(val, length);\n }\n ArrayBuffer.prototype.slice = function(from, to) {\n var length = this.byteLength, begin = clamp(from, length), end = length, num, target, targetArray, sourceArray;\n if (to !== undefined) {\n end = clamp(to, length);\n }\n if (begin > end) {\n return new ArrayBuffer(0);\n }\n num = end - begin;\n target = new ArrayBuffer(num);\n targetArray = new Uint8Array(target);\n sourceArray = new Uint8Array(this, begin, num);\n targetArray.set(sourceArray);\n return target;\n };\n })();\n }\n function toUtf8(str) {\n if (/[\\u0080-\\uFFFF]/.test(str)) {\n str = unescape(encodeURIComponent(str));\n }\n return str;\n }\n function utf8Str2ArrayBuffer(str, returnUInt8Array) {\n var length = str.length, buff = new ArrayBuffer(length), arr = new Uint8Array(buff), i;\n for (i = 0; i < length; i += 1) {\n arr[i] = str.charCodeAt(i);\n }\n return returnUInt8Array ? arr : buff;\n }\n function arrayBuffer2Utf8Str(buff) {\n return String.fromCharCode.apply(null, new Uint8Array(buff));\n }\n function concatenateArrayBuffers(first, second, returnUInt8Array) {\n var result = new Uint8Array(first.byteLength + second.byteLength);\n result.set(new Uint8Array(first));\n result.set(new Uint8Array(second), first.byteLength);\n return returnUInt8Array ? result : result.buffer;\n }\n function hexToBinaryString(hex) {\n var bytes = [], length = hex.length, x;\n for (x = 0; x < length - 1; x += 2) {\n bytes.push(parseInt(hex.substr(x, 2), 16));\n }\n return String.fromCharCode.apply(String, bytes);\n }\n function SparkMD5() {\n this.reset();\n }\n SparkMD5.prototype.append = function(str) {\n this.appendBinary(toUtf8(str));\n return this;\n };\n SparkMD5.prototype.appendBinary = function(contents) {\n this._buff += contents;\n this._length += contents.length;\n var length = this._buff.length, i;\n for (i = 64; i <= length; i += 64) {\n md5cycle(this._hash, md5blk(this._buff.substring(i - 64, i)));\n }\n this._buff = this._buff.substring(i - 64);\n return this;\n };\n SparkMD5.prototype.end = function(raw) {\n var buff = this._buff, length = buff.length, i, tail = [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ], ret;\n for (i = 0; i < length; i += 1) {\n tail[i >> 2] |= buff.charCodeAt(i) << (i % 4 << 3);\n }\n this._finish(tail, length);\n ret = hex(this._hash);\n if (raw) {\n ret = hexToBinaryString(ret);\n }\n this.reset();\n return ret;\n };\n SparkMD5.prototype.reset = function() {\n this._buff = \"\";\n this._length = 0;\n this._hash = [ 1732584193, -271733879, -1732584194, 271733878 ];\n return this;\n };\n SparkMD5.prototype.getState = function() {\n return {\n buff: this._buff,\n length: this._length,\n hash: this._hash\n };\n };\n SparkMD5.prototype.setState = function(state) {\n this._buff = state.buff;\n this._length = state.length;\n this._hash = state.hash;\n return this;\n };\n SparkMD5.prototype.destroy = function() {\n delete this._hash;\n delete this._buff;\n delete this._length;\n };\n SparkMD5.prototype._finish = function(tail, length) {\n var i = length, tmp, lo, hi;\n tail[i >> 2] |= 128 << (i % 4 << 3);\n if (i > 55) {\n md5cycle(this._hash, tail);\n for (i = 0; i < 16; i += 1) {\n tail[i] = 0;\n }\n }\n tmp = this._length * 8;\n tmp = tmp.toString(16).match(/(.*?)(.{0,8})$/);\n lo = parseInt(tmp[2], 16);\n hi = parseInt(tmp[1], 16) || 0;\n tail[14] = lo;\n tail[15] = hi;\n md5cycle(this._hash, tail);\n };\n SparkMD5.hash = function(str, raw) {\n return SparkMD5.hashBinary(toUtf8(str), raw);\n };\n SparkMD5.hashBinary = function(content, raw) {\n var hash = md51(content), ret = hex(hash);\n return raw ? hexToBinaryString(ret) : ret;\n };\n SparkMD5.ArrayBuffer = function() {\n this.reset();\n };\n SparkMD5.ArrayBuffer.prototype.append = function(arr) {\n var buff = concatenateArrayBuffers(this._buff.buffer, arr, true), length = buff.length, i;\n this._length += arr.byteLength;\n for (i = 64; i <= length; i += 64) {\n md5cycle(this._hash, md5blk_array(buff.subarray(i - 64, i)));\n }\n this._buff = i - 64 < length ? new Uint8Array(buff.buffer.slice(i - 64)) : new Uint8Array(0);\n return this;\n };\n SparkMD5.ArrayBuffer.prototype.end = function(raw) {\n var buff = this._buff, length = buff.length, tail = [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ], i, ret;\n for (i = 0; i < length; i += 1) {\n tail[i >> 2] |= buff[i] << (i % 4 << 3);\n }\n this._finish(tail, length);\n ret = hex(this._hash);\n if (raw) {\n ret = hexToBinaryString(ret);\n }\n this.reset();\n return ret;\n };\n SparkMD5.ArrayBuffer.prototype.reset = function() {\n this._buff = new Uint8Array(0);\n this._length = 0;\n this._hash = [ 1732584193, -271733879, -1732584194, 271733878 ];\n return this;\n };\n SparkMD5.ArrayBuffer.prototype.getState = function() {\n var state = SparkMD5.prototype.getState.call(this);\n state.buff = arrayBuffer2Utf8Str(state.buff);\n return state;\n };\n SparkMD5.ArrayBuffer.prototype.setState = function(state) {\n state.buff = utf8Str2ArrayBuffer(state.buff, true);\n return SparkMD5.prototype.setState.call(this, state);\n };\n SparkMD5.ArrayBuffer.prototype.destroy = SparkMD5.prototype.destroy;\n SparkMD5.ArrayBuffer.prototype._finish = SparkMD5.prototype._finish;\n SparkMD5.ArrayBuffer.hash = function(arr, raw) {\n var hash = md51_array(new Uint8Array(arr)), ret = hex(hash);\n return raw ? hexToBinaryString(ret) : ret;\n };\n return SparkMD5;\n });\n });\n var classCallCheck = function(instance, Constructor) {\n if (!(instance instanceof Constructor)) {\n throw new TypeError(\"Cannot call a class as a function\");\n }\n };\n var createClass = function() {\n function defineProperties(target, props) {\n for (var i = 0; i < props.length; i++) {\n var descriptor = props[i];\n descriptor.enumerable = descriptor.enumerable || false;\n descriptor.configurable = true;\n if (\"value\" in descriptor) descriptor.writable = true;\n Object.defineProperty(target, descriptor.key, descriptor);\n }\n }\n return function(Constructor, protoProps, staticProps) {\n if (protoProps) defineProperties(Constructor.prototype, protoProps);\n if (staticProps) defineProperties(Constructor, staticProps);\n return Constructor;\n };\n }();\n var fileSlice = File.prototype.slice || File.prototype.mozSlice || File.prototype.webkitSlice;\n var FileChecksum = function() {\n createClass(FileChecksum, null, [ {\n key: \"create\",\n value: function create(file, callback) {\n var instance = new FileChecksum(file);\n instance.create(callback);\n }\n } ]);\n function FileChecksum(file) {\n classCallCheck(this, FileChecksum);\n this.file = file;\n this.chunkSize = 2097152;\n this.chunkCount = Math.ceil(this.file.size / this.chunkSize);\n this.chunkIndex = 0;\n }\n createClass(FileChecksum, [ {\n key: \"create\",\n value: function create(callback) {\n var _this = this;\n this.callback = callback;\n this.md5Buffer = new sparkMd5.ArrayBuffer();\n this.fileReader = new FileReader();\n this.fileReader.addEventListener(\"load\", function(event) {\n return _this.fileReaderDidLoad(event);\n });\n this.fileReader.addEventListener(\"error\", function(event) {\n return _this.fileReaderDidError(event);\n });\n this.readNextChunk();\n }\n }, {\n key: \"fileReaderDidLoad\",\n value: function fileReaderDidLoad(event) {\n this.md5Buffer.append(event.target.result);\n if (!this.readNextChunk()) {\n var binaryDigest = this.md5Buffer.end(true);\n var base64digest = btoa(binaryDigest);\n this.callback(null, base64digest);\n }\n }\n }, {\n key: \"fileReaderDidError\",\n value: function fileReaderDidError(event) {\n this.callback(\"Error reading \" + this.file.name);\n }\n }, {\n key: \"readNextChunk\",\n value: function readNextChunk() {\n if (this.chunkIndex < this.chunkCount || this.chunkIndex == 0 && this.chunkCount == 0) {\n var start = this.chunkIndex * this.chunkSize;\n var end = Math.min(start + this.chunkSize, this.file.size);\n var bytes = fileSlice.call(this.file, start, end);\n this.fileReader.readAsArrayBuffer(bytes);\n this.chunkIndex++;\n return true;\n } else {\n return false;\n }\n }\n } ]);\n return FileChecksum;\n }();\n function getMetaValue(name) {\n var element = findElement(document.head, 'meta[name=\"' + name + '\"]');\n if (element) {\n return element.getAttribute(\"content\");\n }\n }\n function findElements(root, selector) {\n if (typeof root == \"string\") {\n selector = root;\n root = document;\n }\n var elements = root.querySelectorAll(selector);\n return toArray$1(elements);\n }\n function findElement(root, selector) {\n if (typeof root == \"string\") {\n selector = root;\n root = document;\n }\n return root.querySelector(selector);\n }\n function dispatchEvent(element, type) {\n var eventInit = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};\n var disabled = element.disabled;\n var bubbles = eventInit.bubbles, cancelable = eventInit.cancelable, detail = eventInit.detail;\n var event = document.createEvent(\"Event\");\n event.initEvent(type, bubbles || true, cancelable || true);\n event.detail = detail || {};\n try {\n element.disabled = false;\n element.dispatchEvent(event);\n } finally {\n element.disabled = disabled;\n }\n return event;\n }\n function toArray$1(value) {\n if (Array.isArray(value)) {\n return value;\n } else if (Array.from) {\n return Array.from(value);\n } else {\n return [].slice.call(value);\n }\n }\n var BlobRecord = function() {\n function BlobRecord(file, checksum, url) {\n var _this = this;\n classCallCheck(this, BlobRecord);\n this.file = file;\n this.attributes = {\n filename: file.name,\n content_type: file.type || \"application/octet-stream\",\n byte_size: file.size,\n checksum: checksum\n };\n this.xhr = new XMLHttpRequest();\n this.xhr.open(\"POST\", url, true);\n this.xhr.responseType = \"json\";\n this.xhr.setRequestHeader(\"Content-Type\", \"application/json\");\n this.xhr.setRequestHeader(\"Accept\", \"application/json\");\n this.xhr.setRequestHeader(\"X-Requested-With\", \"XMLHttpRequest\");\n var csrfToken = getMetaValue(\"csrf-token\");\n if (csrfToken != undefined) {\n this.xhr.setRequestHeader(\"X-CSRF-Token\", csrfToken);\n }\n this.xhr.addEventListener(\"load\", function(event) {\n return _this.requestDidLoad(event);\n });\n this.xhr.addEventListener(\"error\", function(event) {\n return _this.requestDidError(event);\n });\n }\n createClass(BlobRecord, [ {\n key: \"create\",\n value: function create(callback) {\n this.callback = callback;\n this.xhr.send(JSON.stringify({\n blob: this.attributes\n }));\n }\n }, {\n key: \"requestDidLoad\",\n value: function requestDidLoad(event) {\n if (this.status >= 200 && this.status < 300) {\n var response = this.response;\n var direct_upload = response.direct_upload;\n delete response.direct_upload;\n this.attributes = response;\n this.directUploadData = direct_upload;\n this.callback(null, this.toJSON());\n } else {\n this.requestDidError(event);\n }\n }\n }, {\n key: \"requestDidError\",\n value: function requestDidError(event) {\n this.callback('Error creating Blob for \"' + this.file.name + '\". Status: ' + this.status);\n }\n }, {\n key: \"toJSON\",\n value: function toJSON() {\n var result = {};\n for (var key in this.attributes) {\n result[key] = this.attributes[key];\n }\n return result;\n }\n }, {\n key: \"status\",\n get: function get$$1() {\n return this.xhr.status;\n }\n }, {\n key: \"response\",\n get: function get$$1() {\n var _xhr = this.xhr, responseType = _xhr.responseType, response = _xhr.response;\n if (responseType == \"json\") {\n return response;\n } else {\n return JSON.parse(response);\n }\n }\n } ]);\n return BlobRecord;\n }();\n var BlobUpload = function() {\n function BlobUpload(blob) {\n var _this = this;\n classCallCheck(this, BlobUpload);\n this.blob = blob;\n this.file = blob.file;\n var _blob$directUploadDat = blob.directUploadData, url = _blob$directUploadDat.url, headers = _blob$directUploadDat.headers;\n this.xhr = new XMLHttpRequest();\n this.xhr.open(\"PUT\", url, true);\n this.xhr.responseType = \"text\";\n for (var key in headers) {\n this.xhr.setRequestHeader(key, headers[key]);\n }\n this.xhr.addEventListener(\"load\", function(event) {\n return _this.requestDidLoad(event);\n });\n this.xhr.addEventListener(\"error\", function(event) {\n return _this.requestDidError(event);\n });\n }\n createClass(BlobUpload, [ {\n key: \"create\",\n value: function create(callback) {\n this.callback = callback;\n this.xhr.send(this.file.slice());\n }\n }, {\n key: \"requestDidLoad\",\n value: function requestDidLoad(event) {\n var _xhr = this.xhr, status = _xhr.status, response = _xhr.response;\n if (status >= 200 && status < 300) {\n this.callback(null, response);\n } else {\n this.requestDidError(event);\n }\n }\n }, {\n key: \"requestDidError\",\n value: function requestDidError(event) {\n this.callback('Error storing \"' + this.file.name + '\". Status: ' + this.xhr.status);\n }\n } ]);\n return BlobUpload;\n }();\n var id = 0;\n var DirectUpload = function() {\n function DirectUpload(file, url, delegate) {\n classCallCheck(this, DirectUpload);\n this.id = ++id;\n this.file = file;\n this.url = url;\n this.delegate = delegate;\n }\n createClass(DirectUpload, [ {\n key: \"create\",\n value: function create(callback) {\n var _this = this;\n FileChecksum.create(this.file, function(error, checksum) {\n if (error) {\n callback(error);\n return;\n }\n var blob = new BlobRecord(_this.file, checksum, _this.url);\n notify(_this.delegate, \"directUploadWillCreateBlobWithXHR\", blob.xhr);\n blob.create(function(error) {\n if (error) {\n callback(error);\n } else {\n var upload = new BlobUpload(blob);\n notify(_this.delegate, \"directUploadWillStoreFileWithXHR\", upload.xhr);\n upload.create(function(error) {\n if (error) {\n callback(error);\n } else {\n callback(null, blob.toJSON());\n }\n });\n }\n });\n });\n }\n } ]);\n return DirectUpload;\n }();\n function notify(object, methodName) {\n if (object && typeof object[methodName] == \"function\") {\n for (var _len = arguments.length, messages = Array(_len > 2 ? _len - 2 : 0), _key = 2; _key < _len; _key++) {\n messages[_key - 2] = arguments[_key];\n }\n return object[methodName].apply(object, messages);\n }\n }\n var DirectUploadController = function() {\n function DirectUploadController(input, file) {\n classCallCheck(this, DirectUploadController);\n this.input = input;\n this.file = file;\n this.directUpload = new DirectUpload(this.file, this.url, this);\n this.dispatch(\"initialize\");\n }\n createClass(DirectUploadController, [ {\n key: \"start\",\n value: function start(callback) {\n var _this = this;\n var hiddenInput = document.createElement(\"input\");\n hiddenInput.type = \"hidden\";\n hiddenInput.name = this.input.name;\n this.input.insertAdjacentElement(\"beforebegin\", hiddenInput);\n this.dispatch(\"start\");\n this.directUpload.create(function(error, attributes) {\n if (error) {\n hiddenInput.parentNode.removeChild(hiddenInput);\n _this.dispatchError(error);\n } else {\n hiddenInput.value = attributes.signed_id;\n }\n _this.dispatch(\"end\");\n callback(error);\n });\n }\n }, {\n key: \"uploadRequestDidProgress\",\n value: function uploadRequestDidProgress(event) {\n var progress = event.loaded / event.total * 100;\n if (progress) {\n this.dispatch(\"progress\", {\n progress: progress\n });\n }\n }\n }, {\n key: \"dispatch\",\n value: function dispatch(name) {\n var detail = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n detail.file = this.file;\n detail.id = this.directUpload.id;\n return dispatchEvent(this.input, \"direct-upload:\" + name, {\n detail: detail\n });\n }\n }, {\n key: \"dispatchError\",\n value: function dispatchError(error) {\n var event = this.dispatch(\"error\", {\n error: error\n });\n if (!event.defaultPrevented) {\n alert(error);\n }\n }\n }, {\n key: \"directUploadWillCreateBlobWithXHR\",\n value: function directUploadWillCreateBlobWithXHR(xhr) {\n this.dispatch(\"before-blob-request\", {\n xhr: xhr\n });\n }\n }, {\n key: \"directUploadWillStoreFileWithXHR\",\n value: function directUploadWillStoreFileWithXHR(xhr) {\n var _this2 = this;\n this.dispatch(\"before-storage-request\", {\n xhr: xhr\n });\n xhr.upload.addEventListener(\"progress\", function(event) {\n return _this2.uploadRequestDidProgress(event);\n });\n }\n }, {\n key: \"url\",\n get: function get$$1() {\n return this.input.getAttribute(\"data-direct-upload-url\");\n }\n } ]);\n return DirectUploadController;\n }();\n var inputSelector = \"input[type=file][data-direct-upload-url]:not([disabled])\";\n var DirectUploadsController = function() {\n function DirectUploadsController(form) {\n classCallCheck(this, DirectUploadsController);\n this.form = form;\n this.inputs = findElements(form, inputSelector).filter(function(input) {\n return input.files.length;\n });\n }\n createClass(DirectUploadsController, [ {\n key: \"start\",\n value: function start(callback) {\n var _this = this;\n var controllers = this.createDirectUploadControllers();\n var startNextController = function startNextController() {\n var controller = controllers.shift();\n if (controller) {\n controller.start(function(error) {\n if (error) {\n callback(error);\n _this.dispatch(\"end\");\n } else {\n startNextController();\n }\n });\n } else {\n callback();\n _this.dispatch(\"end\");\n }\n };\n this.dispatch(\"start\");\n startNextController();\n }\n }, {\n key: \"createDirectUploadControllers\",\n value: function createDirectUploadControllers() {\n var controllers = [];\n this.inputs.forEach(function(input) {\n toArray$1(input.files).forEach(function(file) {\n var controller = new DirectUploadController(input, file);\n controllers.push(controller);\n });\n });\n return controllers;\n }\n }, {\n key: \"dispatch\",\n value: function dispatch(name) {\n var detail = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n return dispatchEvent(this.form, \"direct-uploads:\" + name, {\n detail: detail\n });\n }\n } ]);\n return DirectUploadsController;\n }();\n var processingAttribute = \"data-direct-uploads-processing\";\n var submitButtonsByForm = new WeakMap();\n var started = false;\n function start() {\n if (!started) {\n started = true;\n document.addEventListener(\"click\", didClick, true);\n document.addEventListener(\"submit\", didSubmitForm);\n document.addEventListener(\"ajax:before\", didSubmitRemoteElement);\n }\n }\n function didClick(event) {\n var target = event.target;\n if ((target.tagName == \"INPUT\" || target.tagName == \"BUTTON\") && target.type == \"submit\" && target.form) {\n submitButtonsByForm.set(target.form, target);\n }\n }\n function didSubmitForm(event) {\n handleFormSubmissionEvent(event);\n }\n function didSubmitRemoteElement(event) {\n if (event.target.tagName == \"FORM\") {\n handleFormSubmissionEvent(event);\n }\n }\n function handleFormSubmissionEvent(event) {\n var form = event.target;\n if (form.hasAttribute(processingAttribute)) {\n event.preventDefault();\n return;\n }\n var controller = new DirectUploadsController(form);\n var inputs = controller.inputs;\n if (inputs.length) {\n event.preventDefault();\n form.setAttribute(processingAttribute, \"\");\n inputs.forEach(disable);\n controller.start(function(error) {\n form.removeAttribute(processingAttribute);\n if (error) {\n inputs.forEach(enable);\n } else {\n submitForm(form);\n }\n });\n }\n }\n function submitForm(form) {\n var button = submitButtonsByForm.get(form) || findElement(form, \"input[type=submit], button[type=submit]\");\n if (button) {\n var _button = button, disabled = _button.disabled;\n button.disabled = false;\n button.focus();\n button.click();\n button.disabled = disabled;\n } else {\n button = document.createElement(\"input\");\n button.type = \"submit\";\n button.style.display = \"none\";\n form.appendChild(button);\n button.click();\n form.removeChild(button);\n }\n submitButtonsByForm.delete(form);\n }\n function disable(input) {\n input.disabled = true;\n }\n function enable(input) {\n input.disabled = false;\n }\n function autostart() {\n if (window.ActiveStorage) {\n start();\n }\n }\n setTimeout(autostart, 1);\n exports.start = start;\n exports.DirectUpload = DirectUpload;\n Object.defineProperty(exports, \"__esModule\", {\n value: true\n });\n});\n", "export default {\n logger: typeof console !== \"undefined\" ? console : undefined,\n WebSocket: typeof WebSocket !== \"undefined\" ? WebSocket : undefined,\n}\n", "import adapters from \"./adapters\"\n\n// The logger is disabled by default. You can enable it with:\n//\n// ActionCable.logger.enabled = true\n//\n// Example:\n//\n// import * as ActionCable from '@rails/actioncable'\n//\n// ActionCable.logger.enabled = true\n// ActionCable.logger.log('Connection Established.')\n//\n\nexport default {\n log(...messages) {\n if (this.enabled) {\n messages.push(Date.now())\n adapters.logger.log(\"[ActionCable]\", ...messages)\n }\n },\n}\n", "import logger from \"./logger\"\n\n// Responsible for ensuring the cable connection is in good health by validating the heartbeat pings sent from the server, and attempting\n// revival reconnections if things go astray. Internal class, not intended for direct user manipulation.\n\nconst now = () => new Date().getTime()\n\nconst secondsSince = time => (now() - time) / 1000\n\nclass ConnectionMonitor {\n constructor(connection) {\n this.visibilityDidChange = this.visibilityDidChange.bind(this)\n this.connection = connection\n this.reconnectAttempts = 0\n }\n\n start() {\n if (!this.isRunning()) {\n this.startedAt = now()\n delete this.stoppedAt\n this.startPolling()\n addEventListener(\"visibilitychange\", this.visibilityDidChange)\n logger.log(`ConnectionMonitor started. stale threshold = ${this.constructor.staleThreshold} s`)\n }\n }\n\n stop() {\n if (this.isRunning()) {\n this.stoppedAt = now()\n this.stopPolling()\n removeEventListener(\"visibilitychange\", this.visibilityDidChange)\n logger.log(\"ConnectionMonitor stopped\")\n }\n }\n\n isRunning() {\n return this.startedAt && !this.stoppedAt\n }\n\n recordMessage() {\n this.pingedAt = now()\n }\n\n recordConnect() {\n this.reconnectAttempts = 0\n delete this.disconnectedAt\n logger.log(\"ConnectionMonitor recorded connect\")\n }\n\n recordDisconnect() {\n this.disconnectedAt = now()\n logger.log(\"ConnectionMonitor recorded disconnect\")\n }\n\n // Private\n\n startPolling() {\n this.stopPolling()\n this.poll()\n }\n\n stopPolling() {\n clearTimeout(this.pollTimeout)\n }\n\n poll() {\n this.pollTimeout = setTimeout(() => {\n this.reconnectIfStale()\n this.poll()\n }\n , this.getPollInterval())\n }\n\n getPollInterval() {\n const { staleThreshold, reconnectionBackoffRate } = this.constructor\n const backoff = Math.pow(1 + reconnectionBackoffRate, Math.min(this.reconnectAttempts, 10))\n const jitterMax = this.reconnectAttempts === 0 ? 1.0 : reconnectionBackoffRate\n const jitter = jitterMax * Math.random()\n return staleThreshold * 1000 * backoff * (1 + jitter)\n }\n\n reconnectIfStale() {\n if (this.connectionIsStale()) {\n logger.log(`ConnectionMonitor detected stale connection. reconnectAttempts = ${this.reconnectAttempts}, time stale = ${secondsSince(this.refreshedAt)} s, stale threshold = ${this.constructor.staleThreshold} s`)\n this.reconnectAttempts++\n if (this.disconnectedRecently()) {\n logger.log(`ConnectionMonitor skipping reopening recent disconnect. time disconnected = ${secondsSince(this.disconnectedAt)} s`)\n } else {\n logger.log(\"ConnectionMonitor reopening\")\n this.connection.reopen()\n }\n }\n }\n\n get refreshedAt() {\n return this.pingedAt ? this.pingedAt : this.startedAt\n }\n\n connectionIsStale() {\n return secondsSince(this.refreshedAt) > this.constructor.staleThreshold\n }\n\n disconnectedRecently() {\n return this.disconnectedAt && (secondsSince(this.disconnectedAt) < this.constructor.staleThreshold)\n }\n\n visibilityDidChange() {\n if (document.visibilityState === \"visible\") {\n setTimeout(() => {\n if (this.connectionIsStale() || !this.connection.isOpen()) {\n logger.log(`ConnectionMonitor reopening stale connection on visibilitychange. visibilityState = ${document.visibilityState}`)\n this.connection.reopen()\n }\n }\n , 200)\n }\n }\n\n}\n\nConnectionMonitor.staleThreshold = 6 // Server::Connections::BEAT_INTERVAL * 2 (missed two pings)\nConnectionMonitor.reconnectionBackoffRate = 0.15\n\nexport default ConnectionMonitor\n", "export default {\n \"message_types\": {\n \"welcome\": \"welcome\",\n \"disconnect\": \"disconnect\",\n \"ping\": \"ping\",\n \"confirmation\": \"confirm_subscription\",\n \"rejection\": \"reject_subscription\"\n },\n \"disconnect_reasons\": {\n \"unauthorized\": \"unauthorized\",\n \"invalid_request\": \"invalid_request\",\n \"server_restart\": \"server_restart\",\n \"remote\": \"remote\"\n },\n \"default_mount_path\": \"/cable\",\n \"protocols\": [\n \"actioncable-v1-json\",\n \"actioncable-unsupported\"\n ]\n}\n", "import adapters from \"./adapters\"\nimport ConnectionMonitor from \"./connection_monitor\"\nimport INTERNAL from \"./internal\"\nimport logger from \"./logger\"\n\n// Encapsulate the cable connection held by the consumer. This is an internal class not intended for direct user manipulation.\n\nconst {message_types, protocols} = INTERNAL\nconst supportedProtocols = protocols.slice(0, protocols.length - 1)\n\nconst indexOf = [].indexOf\n\nclass Connection {\n constructor(consumer) {\n this.open = this.open.bind(this)\n this.consumer = consumer\n this.subscriptions = this.consumer.subscriptions\n this.monitor = new ConnectionMonitor(this)\n this.disconnected = true\n }\n\n send(data) {\n if (this.isOpen()) {\n this.webSocket.send(JSON.stringify(data))\n return true\n } else {\n return false\n }\n }\n\n open() {\n if (this.isActive()) {\n logger.log(`Attempted to open WebSocket, but existing socket is ${this.getState()}`)\n return false\n } else {\n const socketProtocols = [...protocols, ...this.consumer.subprotocols || []]\n logger.log(`Opening WebSocket, current state is ${this.getState()}, subprotocols: ${socketProtocols}`)\n if (this.webSocket) { this.uninstallEventHandlers() }\n this.webSocket = new adapters.WebSocket(this.consumer.url, socketProtocols)\n this.installEventHandlers()\n this.monitor.start()\n return true\n }\n }\n\n close({allowReconnect} = {allowReconnect: true}) {\n if (!allowReconnect) { this.monitor.stop() }\n // Avoid closing websockets in a \"connecting\" state due to Safari 15.1+ bug. See: https://github.com/rails/rails/issues/43835#issuecomment-1002288478\n if (this.isOpen()) {\n return this.webSocket.close()\n }\n }\n\n reopen() {\n logger.log(`Reopening WebSocket, current state is ${this.getState()}`)\n if (this.isActive()) {\n try {\n return this.close()\n } catch (error) {\n logger.log(\"Failed to reopen WebSocket\", error)\n }\n finally {\n logger.log(`Reopening WebSocket in ${this.constructor.reopenDelay}ms`)\n setTimeout(this.open, this.constructor.reopenDelay)\n }\n } else {\n return this.open()\n }\n }\n\n getProtocol() {\n if (this.webSocket) {\n return this.webSocket.protocol\n }\n }\n\n isOpen() {\n return this.isState(\"open\")\n }\n\n isActive() {\n return this.isState(\"open\", \"connecting\")\n }\n\n triedToReconnect() {\n return this.monitor.reconnectAttempts > 0\n }\n\n // Private\n\n isProtocolSupported() {\n return indexOf.call(supportedProtocols, this.getProtocol()) >= 0\n }\n\n isState(...states) {\n return indexOf.call(states, this.getState()) >= 0\n }\n\n getState() {\n if (this.webSocket) {\n for (let state in adapters.WebSocket) {\n if (adapters.WebSocket[state] === this.webSocket.readyState) {\n return state.toLowerCase()\n }\n }\n }\n return null\n }\n\n installEventHandlers() {\n for (let eventName in this.events) {\n const handler = this.events[eventName].bind(this)\n this.webSocket[`on${eventName}`] = handler\n }\n }\n\n uninstallEventHandlers() {\n for (let eventName in this.events) {\n this.webSocket[`on${eventName}`] = function() {}\n }\n }\n\n}\n\nConnection.reopenDelay = 500\n\nConnection.prototype.events = {\n message(event) {\n if (!this.isProtocolSupported()) { return }\n const {identifier, message, reason, reconnect, type} = JSON.parse(event.data)\n this.monitor.recordMessage()\n switch (type) {\n case message_types.welcome:\n if (this.triedToReconnect()) {\n this.reconnectAttempted = true\n }\n this.monitor.recordConnect()\n return this.subscriptions.reload()\n case message_types.disconnect:\n logger.log(`Disconnecting. Reason: ${reason}`)\n return this.close({allowReconnect: reconnect})\n case message_types.ping:\n return null\n case message_types.confirmation:\n this.subscriptions.confirmSubscription(identifier)\n if (this.reconnectAttempted) {\n this.reconnectAttempted = false\n return this.subscriptions.notify(identifier, \"connected\", {reconnected: true})\n } else {\n return this.subscriptions.notify(identifier, \"connected\", {reconnected: false})\n }\n case message_types.rejection:\n return this.subscriptions.reject(identifier)\n default:\n return this.subscriptions.notify(identifier, \"received\", message)\n }\n },\n\n open() {\n logger.log(`WebSocket onopen event, using '${this.getProtocol()}' subprotocol`)\n this.disconnected = false\n if (!this.isProtocolSupported()) {\n logger.log(\"Protocol is unsupported. Stopping monitor and disconnecting.\")\n return this.close({allowReconnect: false})\n }\n },\n\n close(event) {\n logger.log(\"WebSocket onclose event\")\n if (this.disconnected) { return }\n this.disconnected = true\n this.monitor.recordDisconnect()\n return this.subscriptions.notifyAll(\"disconnected\", {willAttemptReconnect: this.monitor.isRunning()})\n },\n\n error() {\n logger.log(\"WebSocket onerror event\")\n }\n}\n\nexport default Connection\n", "// A new subscription is created through the ActionCable.Subscriptions instance available on the consumer.\n// It provides a number of callbacks and a method for calling remote procedure calls on the corresponding\n// Channel instance on the server side.\n//\n// An example demonstrates the basic functionality:\n//\n// App.appearance = App.cable.subscriptions.create(\"AppearanceChannel\", {\n// connected() {\n// // Called once the subscription has been successfully completed\n// },\n//\n// disconnected({ willAttemptReconnect: boolean }) {\n// // Called when the client has disconnected with the server.\n// // The object will have an `willAttemptReconnect` property which\n// // says whether the client has the intention of attempting\n// // to reconnect.\n// },\n//\n// appear() {\n// this.perform('appear', {appearing_on: this.appearingOn()})\n// },\n//\n// away() {\n// this.perform('away')\n// },\n//\n// appearingOn() {\n// $('main').data('appearing-on')\n// }\n// })\n//\n// The methods #appear and #away forward their intent to the remote AppearanceChannel instance on the server\n// by calling the `perform` method with the first parameter being the action (which maps to AppearanceChannel#appear/away).\n// The second parameter is a hash that'll get JSON encoded and made available on the server in the data parameter.\n//\n// This is how the server component would look:\n//\n// class AppearanceChannel < ApplicationActionCable::Channel\n// def subscribed\n// current_user.appear\n// end\n//\n// def unsubscribed\n// current_user.disappear\n// end\n//\n// def appear(data)\n// current_user.appear on: data['appearing_on']\n// end\n//\n// def away\n// current_user.away\n// end\n// end\n//\n// The \"AppearanceChannel\" name is automatically mapped between the client-side subscription creation and the server-side Ruby class name.\n// The AppearanceChannel#appear/away public methods are exposed automatically to client-side invocation through the perform method.\n\nconst extend = function(object, properties) {\n if (properties != null) {\n for (let key in properties) {\n const value = properties[key]\n object[key] = value\n }\n }\n return object\n}\n\nexport default class Subscription {\n constructor(consumer, params = {}, mixin) {\n this.consumer = consumer\n this.identifier = JSON.stringify(params)\n extend(this, mixin)\n }\n\n // Perform a channel action with the optional data passed as an attribute\n perform(action, data = {}) {\n data.action = action\n return this.send(data)\n }\n\n send(data) {\n return this.consumer.send({command: \"message\", identifier: this.identifier, data: JSON.stringify(data)})\n }\n\n unsubscribe() {\n return this.consumer.subscriptions.remove(this)\n }\n}\n", "import logger from \"./logger\"\n\n// Responsible for ensuring channel subscribe command is confirmed, retrying until confirmation is received.\n// Internal class, not intended for direct user manipulation.\n\nclass SubscriptionGuarantor {\n constructor(subscriptions) {\n this.subscriptions = subscriptions\n this.pendingSubscriptions = []\n }\n\n guarantee(subscription) {\n if(this.pendingSubscriptions.indexOf(subscription) == -1){ \n logger.log(`SubscriptionGuarantor guaranteeing ${subscription.identifier}`)\n this.pendingSubscriptions.push(subscription) \n }\n else {\n logger.log(`SubscriptionGuarantor already guaranteeing ${subscription.identifier}`)\n }\n this.startGuaranteeing()\n }\n\n forget(subscription) {\n logger.log(`SubscriptionGuarantor forgetting ${subscription.identifier}`)\n this.pendingSubscriptions = (this.pendingSubscriptions.filter((s) => s !== subscription))\n }\n\n startGuaranteeing() {\n this.stopGuaranteeing()\n this.retrySubscribing()\n }\n \n stopGuaranteeing() {\n clearTimeout(this.retryTimeout)\n }\n\n retrySubscribing() {\n this.retryTimeout = setTimeout(() => {\n if (this.subscriptions && typeof(this.subscriptions.subscribe) === \"function\") {\n this.pendingSubscriptions.map((subscription) => {\n logger.log(`SubscriptionGuarantor resubscribing ${subscription.identifier}`)\n this.subscriptions.subscribe(subscription)\n })\n }\n }\n , 500)\n }\n}\n\nexport default SubscriptionGuarantor", "import logger from \"./logger\"\nimport Subscription from \"./subscription\"\nimport SubscriptionGuarantor from \"./subscription_guarantor\"\n\n// Collection class for creating (and internally managing) channel subscriptions.\n// The only method intended to be triggered by the user is ActionCable.Subscriptions#create,\n// and it should be called through the consumer like so:\n//\n// App = {}\n// App.cable = ActionCable.createConsumer(\"ws://example.com/accounts/1\")\n// App.appearance = App.cable.subscriptions.create(\"AppearanceChannel\")\n//\n// For more details on how you'd configure an actual channel subscription, see ActionCable.Subscription.\n\nexport default class Subscriptions {\n constructor(consumer) {\n this.consumer = consumer\n this.guarantor = new SubscriptionGuarantor(this)\n this.subscriptions = []\n }\n\n create(channelName, mixin) {\n const channel = channelName\n const params = typeof channel === \"object\" ? channel : {channel}\n const subscription = new Subscription(this.consumer, params, mixin)\n return this.add(subscription)\n }\n\n // Private\n\n add(subscription) {\n this.subscriptions.push(subscription)\n this.consumer.ensureActiveConnection()\n this.notify(subscription, \"initialized\")\n this.subscribe(subscription)\n return subscription\n }\n\n remove(subscription) {\n this.forget(subscription)\n if (!this.findAll(subscription.identifier).length) {\n this.sendCommand(subscription, \"unsubscribe\")\n }\n return subscription\n }\n\n reject(identifier) {\n return this.findAll(identifier).map((subscription) => {\n this.forget(subscription)\n this.notify(subscription, \"rejected\")\n return subscription\n })\n }\n\n forget(subscription) {\n this.guarantor.forget(subscription)\n this.subscriptions = (this.subscriptions.filter((s) => s !== subscription))\n return subscription\n }\n\n findAll(identifier) {\n return this.subscriptions.filter((s) => s.identifier === identifier)\n }\n\n reload() {\n return this.subscriptions.map((subscription) =>\n this.subscribe(subscription))\n }\n\n notifyAll(callbackName, ...args) {\n return this.subscriptions.map((subscription) =>\n this.notify(subscription, callbackName, ...args))\n }\n\n notify(subscription, callbackName, ...args) {\n let subscriptions\n if (typeof subscription === \"string\") {\n subscriptions = this.findAll(subscription)\n } else {\n subscriptions = [subscription]\n }\n\n return subscriptions.map((subscription) =>\n (typeof subscription[callbackName] === \"function\" ? subscription[callbackName](...args) : undefined))\n }\n\n subscribe(subscription) {\n if (this.sendCommand(subscription, \"subscribe\")) {\n this.guarantor.guarantee(subscription)\n }\n }\n\n confirmSubscription(identifier) {\n logger.log(`Subscription confirmed ${identifier}`)\n this.findAll(identifier).map((subscription) =>\n this.guarantor.forget(subscription))\n }\n\n sendCommand(subscription, command) {\n const {identifier} = subscription\n return this.consumer.send({command, identifier})\n }\n}\n", "import Connection from \"./connection\"\nimport Subscriptions from \"./subscriptions\"\n\n// The ActionCable.Consumer establishes the connection to a server-side Ruby Connection object. Once established,\n// the ActionCable.ConnectionMonitor will ensure that its properly maintained through heartbeats and checking for stale updates.\n// The Consumer instance is also the gateway to establishing subscriptions to desired channels through the #createSubscription\n// method.\n//\n// The following example shows how this can be set up:\n//\n// App = {}\n// App.cable = ActionCable.createConsumer(\"ws://example.com/accounts/1\")\n// App.appearance = App.cable.subscriptions.create(\"AppearanceChannel\")\n//\n// For more details on how you'd configure an actual channel subscription, see ActionCable.Subscription.\n//\n// When a consumer is created, it automatically connects with the server.\n//\n// To disconnect from the server, call\n//\n// App.cable.disconnect()\n//\n// and to restart the connection:\n//\n// App.cable.connect()\n//\n// Any channel subscriptions which existed prior to disconnecting will\n// automatically resubscribe.\n\nexport default class Consumer {\n constructor(url) {\n this._url = url\n this.subscriptions = new Subscriptions(this)\n this.connection = new Connection(this)\n this.subprotocols = []\n }\n\n get url() {\n return createWebSocketURL(this._url)\n }\n\n send(data) {\n return this.connection.send(data)\n }\n\n connect() {\n return this.connection.open()\n }\n\n disconnect() {\n return this.connection.close({allowReconnect: false})\n }\n\n ensureActiveConnection() {\n if (!this.connection.isActive()) {\n return this.connection.open()\n }\n }\n\n addSubProtocol(subprotocol) {\n this.subprotocols = [...this.subprotocols, subprotocol]\n }\n}\n\nexport function createWebSocketURL(url) {\n if (typeof url === \"function\") {\n url = url()\n }\n\n if (url && !/^wss?:/i.test(url)) {\n const a = document.createElement(\"a\")\n a.href = url\n // Fix populating Location properties in IE. Otherwise, protocol will be blank.\n a.href = a.href // eslint-disable-line\n a.protocol = a.protocol.replace(\"http\", \"ws\")\n return a.href\n } else {\n return url\n }\n}\n", "import adapters from \"./adapters\"\nimport Connection from \"./connection\"\nimport ConnectionMonitor from \"./connection_monitor\"\nimport Consumer, { createWebSocketURL } from \"./consumer\"\nimport INTERNAL from \"./internal\"\nimport logger from \"./logger\"\nimport Subscription from \"./subscription\"\nimport SubscriptionGuarantor from \"./subscription_guarantor\"\nimport Subscriptions from \"./subscriptions\"\n\nexport {\n Connection,\n ConnectionMonitor,\n Consumer,\n INTERNAL,\n Subscription,\n Subscriptions,\n SubscriptionGuarantor,\n adapters,\n createWebSocketURL,\n logger,\n}\n\nexport function createConsumer(url = getConfig(\"url\") || INTERNAL.default_mount_path) {\n return new Consumer(url)\n}\n\nexport function getConfig(name) {\n const element = document.head.querySelector(`meta[name='action-cable-${name}']`)\n if (element) {\n return element.getAttribute(\"content\")\n }\n}\n", "/*! https://mths.be/punycode v1.4.0 by @mathias */\n;(function(root) {\n\n\t/** Detect free variables */\n\tvar freeExports = typeof exports == 'object' && exports &&\n\t\t!exports.nodeType && exports;\n\tvar freeModule = typeof module == 'object' && module &&\n\t\t!module.nodeType && module;\n\tvar freeGlobal = typeof global == 'object' && global;\n\tif (\n\t\tfreeGlobal.global === freeGlobal ||\n\t\tfreeGlobal.window === freeGlobal ||\n\t\tfreeGlobal.self === freeGlobal\n\t) {\n\t\troot = freeGlobal;\n\t}\n\n\t/**\n\t * The `punycode` object.\n\t * @name punycode\n\t * @type Object\n\t */\n\tvar punycode,\n\n\t/** Highest positive signed 32-bit float value */\n\tmaxInt = 2147483647, // aka. 0x7FFFFFFF or 2^31-1\n\n\t/** Bootstring parameters */\n\tbase = 36,\n\ttMin = 1,\n\ttMax = 26,\n\tskew = 38,\n\tdamp = 700,\n\tinitialBias = 72,\n\tinitialN = 128, // 0x80\n\tdelimiter = '-', // '\\x2D'\n\n\t/** Regular expressions */\n\tregexPunycode = /^xn--/,\n\tregexNonASCII = /[^\\x20-\\x7E]/, // unprintable ASCII chars + non-ASCII chars\n\tregexSeparators = /[\\x2E\\u3002\\uFF0E\\uFF61]/g, // RFC 3490 separators\n\n\t/** Error messages */\n\terrors = {\n\t\t'overflow': 'Overflow: input needs wider integers to process',\n\t\t'not-basic': 'Illegal input >= 0x80 (not a basic code point)',\n\t\t'invalid-input': 'Invalid input'\n\t},\n\n\t/** Convenience shortcuts */\n\tbaseMinusTMin = base - tMin,\n\tfloor = Math.floor,\n\tstringFromCharCode = String.fromCharCode,\n\n\t/** Temporary variable */\n\tkey;\n\n\t/*--------------------------------------------------------------------------*/\n\n\t/**\n\t * A generic error utility function.\n\t * @private\n\t * @param {String} type The error type.\n\t * @returns {Error} Throws a `RangeError` with the applicable error message.\n\t */\n\tfunction error(type) {\n\t\tthrow new RangeError(errors[type]);\n\t}\n\n\t/**\n\t * A generic `Array#map` utility function.\n\t * @private\n\t * @param {Array} array The array to iterate over.\n\t * @param {Function} callback The function that gets called for every array\n\t * item.\n\t * @returns {Array} A new array of values returned by the callback function.\n\t */\n\tfunction map(array, fn) {\n\t\tvar length = array.length;\n\t\tvar result = [];\n\t\twhile (length--) {\n\t\t\tresult[length] = fn(array[length]);\n\t\t}\n\t\treturn result;\n\t}\n\n\t/**\n\t * A simple `Array#map`-like wrapper to work with domain name strings or email\n\t * addresses.\n\t * @private\n\t * @param {String} domain The domain name or email address.\n\t * @param {Function} callback The function that gets called for every\n\t * character.\n\t * @returns {Array} A new string of characters returned by the callback\n\t * function.\n\t */\n\tfunction mapDomain(string, fn) {\n\t\tvar parts = string.split('@');\n\t\tvar result = '';\n\t\tif (parts.length > 1) {\n\t\t\t// In email addresses, only the domain name should be punycoded. Leave\n\t\t\t// the local part (i.e. everything up to `@`) intact.\n\t\t\tresult = parts[0] + '@';\n\t\t\tstring = parts[1];\n\t\t}\n\t\t// Avoid `split(regex)` for IE8 compatibility. See #17.\n\t\tstring = string.replace(regexSeparators, '\\x2E');\n\t\tvar labels = string.split('.');\n\t\tvar encoded = map(labels, fn).join('.');\n\t\treturn result + encoded;\n\t}\n\n\t/**\n\t * Creates an array containing the numeric code points of each Unicode\n\t * character in the string. While JavaScript uses UCS-2 internally,\n\t * this function will convert a pair of surrogate halves (each of which\n\t * UCS-2 exposes as separate characters) into a single code point,\n\t * matching UTF-16.\n\t * @see `punycode.ucs2.encode`\n\t * @see \n\t * @memberOf punycode.ucs2\n\t * @name decode\n\t * @param {String} string The Unicode input string (UCS-2).\n\t * @returns {Array} The new array of code points.\n\t */\n\tfunction ucs2decode(string) {\n\t\tvar output = [],\n\t\t counter = 0,\n\t\t length = string.length,\n\t\t value,\n\t\t extra;\n\t\twhile (counter < length) {\n\t\t\tvalue = string.charCodeAt(counter++);\n\t\t\tif (value >= 0xD800 && value <= 0xDBFF && counter < length) {\n\t\t\t\t// high surrogate, and there is a next character\n\t\t\t\textra = string.charCodeAt(counter++);\n\t\t\t\tif ((extra & 0xFC00) == 0xDC00) { // low surrogate\n\t\t\t\t\toutput.push(((value & 0x3FF) << 10) + (extra & 0x3FF) + 0x10000);\n\t\t\t\t} else {\n\t\t\t\t\t// unmatched surrogate; only append this code unit, in case the next\n\t\t\t\t\t// code unit is the high surrogate of a surrogate pair\n\t\t\t\t\toutput.push(value);\n\t\t\t\t\tcounter--;\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\toutput.push(value);\n\t\t\t}\n\t\t}\n\t\treturn output;\n\t}\n\n\t/**\n\t * Creates a string based on an array of numeric code points.\n\t * @see `punycode.ucs2.decode`\n\t * @memberOf punycode.ucs2\n\t * @name encode\n\t * @param {Array} codePoints The array of numeric code points.\n\t * @returns {String} The new Unicode string (UCS-2).\n\t */\n\tfunction ucs2encode(array) {\n\t\treturn map(array, function(value) {\n\t\t\tvar output = '';\n\t\t\tif (value > 0xFFFF) {\n\t\t\t\tvalue -= 0x10000;\n\t\t\t\toutput += stringFromCharCode(value >>> 10 & 0x3FF | 0xD800);\n\t\t\t\tvalue = 0xDC00 | value & 0x3FF;\n\t\t\t}\n\t\t\toutput += stringFromCharCode(value);\n\t\t\treturn output;\n\t\t}).join('');\n\t}\n\n\t/**\n\t * Converts a basic code point into a digit/integer.\n\t * @see `digitToBasic()`\n\t * @private\n\t * @param {Number} codePoint The basic numeric code point value.\n\t * @returns {Number} The numeric value of a basic code point (for use in\n\t * representing integers) in the range `0` to `base - 1`, or `base` if\n\t * the code point does not represent a value.\n\t */\n\tfunction basicToDigit(codePoint) {\n\t\tif (codePoint - 48 < 10) {\n\t\t\treturn codePoint - 22;\n\t\t}\n\t\tif (codePoint - 65 < 26) {\n\t\t\treturn codePoint - 65;\n\t\t}\n\t\tif (codePoint - 97 < 26) {\n\t\t\treturn codePoint - 97;\n\t\t}\n\t\treturn base;\n\t}\n\n\t/**\n\t * Converts a digit/integer into a basic code point.\n\t * @see `basicToDigit()`\n\t * @private\n\t * @param {Number} digit The numeric value of a basic code point.\n\t * @returns {Number} The basic code point whose value (when used for\n\t * representing integers) is `digit`, which needs to be in the range\n\t * `0` to `base - 1`. If `flag` is non-zero, the uppercase form is\n\t * used; else, the lowercase form is used. The behavior is undefined\n\t * if `flag` is non-zero and `digit` has no uppercase form.\n\t */\n\tfunction digitToBasic(digit, flag) {\n\t\t// 0..25 map to ASCII a..z or A..Z\n\t\t// 26..35 map to ASCII 0..9\n\t\treturn digit + 22 + 75 * (digit < 26) - ((flag != 0) << 5);\n\t}\n\n\t/**\n\t * Bias adaptation function as per section 3.4 of RFC 3492.\n\t * https://tools.ietf.org/html/rfc3492#section-3.4\n\t * @private\n\t */\n\tfunction adapt(delta, numPoints, firstTime) {\n\t\tvar k = 0;\n\t\tdelta = firstTime ? floor(delta / damp) : delta >> 1;\n\t\tdelta += floor(delta / numPoints);\n\t\tfor (/* no initialization */; delta > baseMinusTMin * tMax >> 1; k += base) {\n\t\t\tdelta = floor(delta / baseMinusTMin);\n\t\t}\n\t\treturn floor(k + (baseMinusTMin + 1) * delta / (delta + skew));\n\t}\n\n\t/**\n\t * Converts a Punycode string of ASCII-only symbols to a string of Unicode\n\t * symbols.\n\t * @memberOf punycode\n\t * @param {String} input The Punycode string of ASCII-only symbols.\n\t * @returns {String} The resulting string of Unicode symbols.\n\t */\n\tfunction decode(input) {\n\t\t// Don't use UCS-2\n\t\tvar output = [],\n\t\t inputLength = input.length,\n\t\t out,\n\t\t i = 0,\n\t\t n = initialN,\n\t\t bias = initialBias,\n\t\t basic,\n\t\t j,\n\t\t index,\n\t\t oldi,\n\t\t w,\n\t\t k,\n\t\t digit,\n\t\t t,\n\t\t /** Cached calculation results */\n\t\t baseMinusT;\n\n\t\t// Handle the basic code points: let `basic` be the number of input code\n\t\t// points before the last delimiter, or `0` if there is none, then copy\n\t\t// the first basic code points to the output.\n\n\t\tbasic = input.lastIndexOf(delimiter);\n\t\tif (basic < 0) {\n\t\t\tbasic = 0;\n\t\t}\n\n\t\tfor (j = 0; j < basic; ++j) {\n\t\t\t// if it's not a basic code point\n\t\t\tif (input.charCodeAt(j) >= 0x80) {\n\t\t\t\terror('not-basic');\n\t\t\t}\n\t\t\toutput.push(input.charCodeAt(j));\n\t\t}\n\n\t\t// Main decoding loop: start just after the last delimiter if any basic code\n\t\t// points were copied; start at the beginning otherwise.\n\n\t\tfor (index = basic > 0 ? basic + 1 : 0; index < inputLength; /* no final expression */) {\n\n\t\t\t// `index` is the index of the next character to be consumed.\n\t\t\t// Decode a generalized variable-length integer into `delta`,\n\t\t\t// which gets added to `i`. The overflow checking is easier\n\t\t\t// if we increase `i` as we go, then subtract off its starting\n\t\t\t// value at the end to obtain `delta`.\n\t\t\tfor (oldi = i, w = 1, k = base; /* no condition */; k += base) {\n\n\t\t\t\tif (index >= inputLength) {\n\t\t\t\t\terror('invalid-input');\n\t\t\t\t}\n\n\t\t\t\tdigit = basicToDigit(input.charCodeAt(index++));\n\n\t\t\t\tif (digit >= base || digit > floor((maxInt - i) / w)) {\n\t\t\t\t\terror('overflow');\n\t\t\t\t}\n\n\t\t\t\ti += digit * w;\n\t\t\t\tt = k <= bias ? tMin : (k >= bias + tMax ? tMax : k - bias);\n\n\t\t\t\tif (digit < t) {\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\n\t\t\t\tbaseMinusT = base - t;\n\t\t\t\tif (w > floor(maxInt / baseMinusT)) {\n\t\t\t\t\terror('overflow');\n\t\t\t\t}\n\n\t\t\t\tw *= baseMinusT;\n\n\t\t\t}\n\n\t\t\tout = output.length + 1;\n\t\t\tbias = adapt(i - oldi, out, oldi == 0);\n\n\t\t\t// `i` was supposed to wrap around from `out` to `0`,\n\t\t\t// incrementing `n` each time, so we'll fix that now:\n\t\t\tif (floor(i / out) > maxInt - n) {\n\t\t\t\terror('overflow');\n\t\t\t}\n\n\t\t\tn += floor(i / out);\n\t\t\ti %= out;\n\n\t\t\t// Insert `n` at position `i` of the output\n\t\t\toutput.splice(i++, 0, n);\n\n\t\t}\n\n\t\treturn ucs2encode(output);\n\t}\n\n\t/**\n\t * Converts a string of Unicode symbols (e.g. a domain name label) to a\n\t * Punycode string of ASCII-only symbols.\n\t * @memberOf punycode\n\t * @param {String} input The string of Unicode symbols.\n\t * @returns {String} The resulting Punycode string of ASCII-only symbols.\n\t */\n\tfunction encode(input) {\n\t\tvar n,\n\t\t delta,\n\t\t handledCPCount,\n\t\t basicLength,\n\t\t bias,\n\t\t j,\n\t\t m,\n\t\t q,\n\t\t k,\n\t\t t,\n\t\t currentValue,\n\t\t output = [],\n\t\t /** `inputLength` will hold the number of code points in `input`. */\n\t\t inputLength,\n\t\t /** Cached calculation results */\n\t\t handledCPCountPlusOne,\n\t\t baseMinusT,\n\t\t qMinusT;\n\n\t\t// Convert the input in UCS-2 to Unicode\n\t\tinput = ucs2decode(input);\n\n\t\t// Cache the length\n\t\tinputLength = input.length;\n\n\t\t// Initialize the state\n\t\tn = initialN;\n\t\tdelta = 0;\n\t\tbias = initialBias;\n\n\t\t// Handle the basic code points\n\t\tfor (j = 0; j < inputLength; ++j) {\n\t\t\tcurrentValue = input[j];\n\t\t\tif (currentValue < 0x80) {\n\t\t\t\toutput.push(stringFromCharCode(currentValue));\n\t\t\t}\n\t\t}\n\n\t\thandledCPCount = basicLength = output.length;\n\n\t\t// `handledCPCount` is the number of code points that have been handled;\n\t\t// `basicLength` is the number of basic code points.\n\n\t\t// Finish the basic string - if it is not empty - with a delimiter\n\t\tif (basicLength) {\n\t\t\toutput.push(delimiter);\n\t\t}\n\n\t\t// Main encoding loop:\n\t\twhile (handledCPCount < inputLength) {\n\n\t\t\t// All non-basic code points < n have been handled already. Find the next\n\t\t\t// larger one:\n\t\t\tfor (m = maxInt, j = 0; j < inputLength; ++j) {\n\t\t\t\tcurrentValue = input[j];\n\t\t\t\tif (currentValue >= n && currentValue < m) {\n\t\t\t\t\tm = currentValue;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Increase `delta` enough to advance the decoder's state to ,\n\t\t\t// but guard against overflow\n\t\t\thandledCPCountPlusOne = handledCPCount + 1;\n\t\t\tif (m - n > floor((maxInt - delta) / handledCPCountPlusOne)) {\n\t\t\t\terror('overflow');\n\t\t\t}\n\n\t\t\tdelta += (m - n) * handledCPCountPlusOne;\n\t\t\tn = m;\n\n\t\t\tfor (j = 0; j < inputLength; ++j) {\n\t\t\t\tcurrentValue = input[j];\n\n\t\t\t\tif (currentValue < n && ++delta > maxInt) {\n\t\t\t\t\terror('overflow');\n\t\t\t\t}\n\n\t\t\t\tif (currentValue == n) {\n\t\t\t\t\t// Represent delta as a generalized variable-length integer\n\t\t\t\t\tfor (q = delta, k = base; /* no condition */; k += base) {\n\t\t\t\t\t\tt = k <= bias ? tMin : (k >= bias + tMax ? tMax : k - bias);\n\t\t\t\t\t\tif (q < t) {\n\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t}\n\t\t\t\t\t\tqMinusT = q - t;\n\t\t\t\t\t\tbaseMinusT = base - t;\n\t\t\t\t\t\toutput.push(\n\t\t\t\t\t\t\tstringFromCharCode(digitToBasic(t + qMinusT % baseMinusT, 0))\n\t\t\t\t\t\t);\n\t\t\t\t\t\tq = floor(qMinusT / baseMinusT);\n\t\t\t\t\t}\n\n\t\t\t\t\toutput.push(stringFromCharCode(digitToBasic(q, 0)));\n\t\t\t\t\tbias = adapt(delta, handledCPCountPlusOne, handledCPCount == basicLength);\n\t\t\t\t\tdelta = 0;\n\t\t\t\t\t++handledCPCount;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t++delta;\n\t\t\t++n;\n\n\t\t}\n\t\treturn output.join('');\n\t}\n\n\t/**\n\t * Converts a Punycode string representing a domain name or an email address\n\t * to Unicode. Only the Punycoded parts of the input will be converted, i.e.\n\t * it doesn't matter if you call it on a string that has already been\n\t * converted to Unicode.\n\t * @memberOf punycode\n\t * @param {String} input The Punycoded domain name or email address to\n\t * convert to Unicode.\n\t * @returns {String} The Unicode representation of the given Punycode\n\t * string.\n\t */\n\tfunction toUnicode(input) {\n\t\treturn mapDomain(input, function(string) {\n\t\t\treturn regexPunycode.test(string)\n\t\t\t\t? decode(string.slice(4).toLowerCase())\n\t\t\t\t: string;\n\t\t});\n\t}\n\n\t/**\n\t * Converts a Unicode string representing a domain name or an email address to\n\t * Punycode. Only the non-ASCII parts of the domain name will be converted,\n\t * i.e. it doesn't matter if you call it with a domain that's already in\n\t * ASCII.\n\t * @memberOf punycode\n\t * @param {String} input The domain name or email address to convert, as a\n\t * Unicode string.\n\t * @returns {String} The Punycode representation of the given domain name or\n\t * email address.\n\t */\n\tfunction toASCII(input) {\n\t\treturn mapDomain(input, function(string) {\n\t\t\treturn regexNonASCII.test(string)\n\t\t\t\t? 'xn--' + encode(string)\n\t\t\t\t: string;\n\t\t});\n\t}\n\n\t/*--------------------------------------------------------------------------*/\n\n\t/** Define the public API */\n\tpunycode = {\n\t\t/**\n\t\t * A string representing the current Punycode.js version number.\n\t\t * @memberOf punycode\n\t\t * @type String\n\t\t */\n\t\t'version': '1.3.2',\n\t\t/**\n\t\t * An object of methods to convert from JavaScript's internal character\n\t\t * representation (UCS-2) to Unicode code points, and back.\n\t\t * @see \n\t\t * @memberOf punycode\n\t\t * @type Object\n\t\t */\n\t\t'ucs2': {\n\t\t\t'decode': ucs2decode,\n\t\t\t'encode': ucs2encode\n\t\t},\n\t\t'decode': decode,\n\t\t'encode': encode,\n\t\t'toASCII': toASCII,\n\t\t'toUnicode': toUnicode\n\t};\n\n\t/** Expose `punycode` */\n\t// Some AMD build optimizers, like r.js, check for specific condition patterns\n\t// like the following:\n\tif (\n\t\ttypeof define == 'function' &&\n\t\ttypeof define.amd == 'object' &&\n\t\tdefine.amd\n\t) {\n\t\tdefine('punycode', function() {\n\t\t\treturn punycode;\n\t\t});\n\t} else if (freeExports && freeModule) {\n\t\tif (module.exports == freeExports) {\n\t\t\t// in Node.js, io.js, or RingoJS v0.8.0+\n\t\t\tfreeModule.exports = punycode;\n\t\t} else {\n\t\t\t// in Narwhal or RingoJS v0.7.0-\n\t\t\tfor (key in punycode) {\n\t\t\t\tpunycode.hasOwnProperty(key) && (freeExports[key] = punycode[key]);\n\t\t\t}\n\t\t}\n\t} else {\n\t\t// in Rhino or a web browser\n\t\troot.punycode = punycode;\n\t}\n\n}(this));\n", "/*!\n * URI.js - Mutating URLs\n * IPv6 Support\n *\n * Version: 1.19.11\n *\n * Author: Rodney Rehm\n * Web: http://medialize.github.io/URI.js/\n *\n * Licensed under\n * MIT License http://www.opensource.org/licenses/mit-license\n *\n */\n\n(function (root, factory) {\n 'use strict';\n // https://github.com/umdjs/umd/blob/master/returnExports.js\n if (typeof module === 'object' && module.exports) {\n // Node\n module.exports = factory();\n } else if (typeof define === 'function' && define.amd) {\n // AMD. Register as an anonymous module.\n define(factory);\n } else {\n // Browser globals (root is window)\n root.IPv6 = factory(root);\n }\n}(this, function (root) {\n 'use strict';\n\n /*\n var _in = \"fe80:0000:0000:0000:0204:61ff:fe9d:f156\";\n var _out = IPv6.best(_in);\n var _expected = \"fe80::204:61ff:fe9d:f156\";\n\n console.log(_in, _out, _expected, _out === _expected);\n */\n\n // save current IPv6 variable, if any\n var _IPv6 = root && root.IPv6;\n\n function bestPresentation(address) {\n // based on:\n // Javascript to test an IPv6 address for proper format, and to\n // present the \"best text representation\" according to IETF Draft RFC at\n // http://tools.ietf.org/html/draft-ietf-6man-text-addr-representation-04\n // 8 Feb 2010 Rich Brown, Dartware, LLC\n // Please feel free to use this code as long as you provide a link to\n // http://www.intermapper.com\n // http://intermapper.com/support/tools/IPV6-Validator.aspx\n // http://download.dartware.com/thirdparty/ipv6validator.js\n\n var _address = address.toLowerCase();\n var segments = _address.split(':');\n var length = segments.length;\n var total = 8;\n\n // trim colons (:: or ::a:b:c\u2026 or \u2026a:b:c::)\n if (segments[0] === '' && segments[1] === '' && segments[2] === '') {\n // must have been ::\n // remove first two items\n segments.shift();\n segments.shift();\n } else if (segments[0] === '' && segments[1] === '') {\n // must have been ::xxxx\n // remove the first item\n segments.shift();\n } else if (segments[length - 1] === '' && segments[length - 2] === '') {\n // must have been xxxx::\n segments.pop();\n }\n\n length = segments.length;\n\n // adjust total segments for IPv4 trailer\n if (segments[length - 1].indexOf('.') !== -1) {\n // found a \".\" which means IPv4\n total = 7;\n }\n\n // fill empty segments them with \"0000\"\n var pos;\n for (pos = 0; pos < length; pos++) {\n if (segments[pos] === '') {\n break;\n }\n }\n\n if (pos < total) {\n segments.splice(pos, 1, '0000');\n while (segments.length < total) {\n segments.splice(pos, 0, '0000');\n }\n }\n\n // strip leading zeros\n var _segments;\n for (var i = 0; i < total; i++) {\n _segments = segments[i].split('');\n for (var j = 0; j < 3 ; j++) {\n if (_segments[0] === '0' && _segments.length > 1) {\n _segments.splice(0,1);\n } else {\n break;\n }\n }\n\n segments[i] = _segments.join('');\n }\n\n // find longest sequence of zeroes and coalesce them into one segment\n var best = -1;\n var _best = 0;\n var _current = 0;\n var current = -1;\n var inzeroes = false;\n // i; already declared\n\n for (i = 0; i < total; i++) {\n if (inzeroes) {\n if (segments[i] === '0') {\n _current += 1;\n } else {\n inzeroes = false;\n if (_current > _best) {\n best = current;\n _best = _current;\n }\n }\n } else {\n if (segments[i] === '0') {\n inzeroes = true;\n current = i;\n _current = 1;\n }\n }\n }\n\n if (_current > _best) {\n best = current;\n _best = _current;\n }\n\n if (_best > 1) {\n segments.splice(best, _best, '');\n }\n\n length = segments.length;\n\n // assemble remaining segments\n var result = '';\n if (segments[0] === '') {\n result = ':';\n }\n\n for (i = 0; i < length; i++) {\n result += segments[i];\n if (i === length - 1) {\n break;\n }\n\n result += ':';\n }\n\n if (segments[length - 1] === '') {\n result += ':';\n }\n\n return result;\n }\n\n function noConflict() {\n /*jshint validthis: true */\n if (root.IPv6 === this) {\n root.IPv6 = _IPv6;\n }\n\n return this;\n }\n\n return {\n best: bestPresentation,\n noConflict: noConflict\n };\n}));\n", "/*!\n * URI.js - Mutating URLs\n * Second Level Domain (SLD) Support\n *\n * Version: 1.19.11\n *\n * Author: Rodney Rehm\n * Web: http://medialize.github.io/URI.js/\n *\n * Licensed under\n * MIT License http://www.opensource.org/licenses/mit-license\n *\n */\n\n(function (root, factory) {\n 'use strict';\n // https://github.com/umdjs/umd/blob/master/returnExports.js\n if (typeof module === 'object' && module.exports) {\n // Node\n module.exports = factory();\n } else if (typeof define === 'function' && define.amd) {\n // AMD. Register as an anonymous module.\n define(factory);\n } else {\n // Browser globals (root is window)\n root.SecondLevelDomains = factory(root);\n }\n}(this, function (root) {\n 'use strict';\n\n // save current SecondLevelDomains variable, if any\n var _SecondLevelDomains = root && root.SecondLevelDomains;\n\n var SLD = {\n // list of known Second Level Domains\n // converted list of SLDs from https://github.com/gavingmiller/second-level-domains\n // ----\n // publicsuffix.org is more current and actually used by a couple of browsers internally.\n // downside is it also contains domains like \"dyndns.org\" - which is fine for the security\n // issues browser have to deal with (SOP for cookies, etc) - but is way overboard for URI.js\n // ----\n list: {\n 'ac':' com gov mil net org ',\n 'ae':' ac co gov mil name net org pro sch ',\n 'af':' com edu gov net org ',\n 'al':' com edu gov mil net org ',\n 'ao':' co ed gv it og pb ',\n 'ar':' com edu gob gov int mil net org tur ',\n 'at':' ac co gv or ',\n 'au':' asn com csiro edu gov id net org ',\n 'ba':' co com edu gov mil net org rs unbi unmo unsa untz unze ',\n 'bb':' biz co com edu gov info net org store tv ',\n 'bh':' biz cc com edu gov info net org ',\n 'bn':' com edu gov net org ',\n 'bo':' com edu gob gov int mil net org tv ',\n 'br':' adm adv agr am arq art ato b bio blog bmd cim cng cnt com coop ecn edu eng esp etc eti far flog fm fnd fot fst g12 ggf gov imb ind inf jor jus lel mat med mil mus net nom not ntr odo org ppg pro psc psi qsl rec slg srv tmp trd tur tv vet vlog wiki zlg ',\n 'bs':' com edu gov net org ',\n 'bz':' du et om ov rg ',\n 'ca':' ab bc mb nb nf nl ns nt nu on pe qc sk yk ',\n 'ck':' biz co edu gen gov info net org ',\n 'cn':' ac ah bj com cq edu fj gd gov gs gx gz ha hb he hi hl hn jl js jx ln mil net nm nx org qh sc sd sh sn sx tj tw xj xz yn zj ',\n 'co':' com edu gov mil net nom org ',\n 'cr':' ac c co ed fi go or sa ',\n 'cy':' ac biz com ekloges gov ltd name net org parliament press pro tm ',\n 'do':' art com edu gob gov mil net org sld web ',\n 'dz':' art asso com edu gov net org pol ',\n 'ec':' com edu fin gov info med mil net org pro ',\n 'eg':' com edu eun gov mil name net org sci ',\n 'er':' com edu gov ind mil net org rochest w ',\n 'es':' com edu gob nom org ',\n 'et':' biz com edu gov info name net org ',\n 'fj':' ac biz com info mil name net org pro ',\n 'fk':' ac co gov net nom org ',\n 'fr':' asso com f gouv nom prd presse tm ',\n 'gg':' co net org ',\n 'gh':' com edu gov mil org ',\n 'gn':' ac com gov net org ',\n 'gr':' com edu gov mil net org ',\n 'gt':' com edu gob ind mil net org ',\n 'gu':' com edu gov net org ',\n 'hk':' com edu gov idv net org ',\n 'hu':' 2000 agrar bolt casino city co erotica erotika film forum games hotel info ingatlan jogasz konyvelo lakas media news org priv reklam sex shop sport suli szex tm tozsde utazas video ',\n 'id':' ac co go mil net or sch web ',\n 'il':' ac co gov idf k12 muni net org ',\n 'in':' ac co edu ernet firm gen gov i ind mil net nic org res ',\n 'iq':' com edu gov i mil net org ',\n 'ir':' ac co dnssec gov i id net org sch ',\n 'it':' edu gov ',\n 'je':' co net org ',\n 'jo':' com edu gov mil name net org sch ',\n 'jp':' ac ad co ed go gr lg ne or ',\n 'ke':' ac co go info me mobi ne or sc ',\n 'kh':' com edu gov mil net org per ',\n 'ki':' biz com de edu gov info mob net org tel ',\n 'km':' asso com coop edu gouv k medecin mil nom notaires pharmaciens presse tm veterinaire ',\n 'kn':' edu gov net org ',\n 'kr':' ac busan chungbuk chungnam co daegu daejeon es gangwon go gwangju gyeongbuk gyeonggi gyeongnam hs incheon jeju jeonbuk jeonnam k kg mil ms ne or pe re sc seoul ulsan ',\n 'kw':' com edu gov net org ',\n 'ky':' com edu gov net org ',\n 'kz':' com edu gov mil net org ',\n 'lb':' com edu gov net org ',\n 'lk':' assn com edu gov grp hotel int ltd net ngo org sch soc web ',\n 'lr':' com edu gov net org ',\n 'lv':' asn com conf edu gov id mil net org ',\n 'ly':' com edu gov id med net org plc sch ',\n 'ma':' ac co gov m net org press ',\n 'mc':' asso tm ',\n 'me':' ac co edu gov its net org priv ',\n 'mg':' com edu gov mil nom org prd tm ',\n 'mk':' com edu gov inf name net org pro ',\n 'ml':' com edu gov net org presse ',\n 'mn':' edu gov org ',\n 'mo':' com edu gov net org ',\n 'mt':' com edu gov net org ',\n 'mv':' aero biz com coop edu gov info int mil museum name net org pro ',\n 'mw':' ac co com coop edu gov int museum net org ',\n 'mx':' com edu gob net org ',\n 'my':' com edu gov mil name net org sch ',\n 'nf':' arts com firm info net other per rec store web ',\n 'ng':' biz com edu gov mil mobi name net org sch ',\n 'ni':' ac co com edu gob mil net nom org ',\n 'np':' com edu gov mil net org ',\n 'nr':' biz com edu gov info net org ',\n 'om':' ac biz co com edu gov med mil museum net org pro sch ',\n 'pe':' com edu gob mil net nom org sld ',\n 'ph':' com edu gov i mil net ngo org ',\n 'pk':' biz com edu fam gob gok gon gop gos gov net org web ',\n 'pl':' art bialystok biz com edu gda gdansk gorzow gov info katowice krakow lodz lublin mil net ngo olsztyn org poznan pwr radom slupsk szczecin torun warszawa waw wroc wroclaw zgora ',\n 'pr':' ac biz com edu est gov info isla name net org pro prof ',\n 'ps':' com edu gov net org plo sec ',\n 'pw':' belau co ed go ne or ',\n 'ro':' arts com firm info nom nt org rec store tm www ',\n 'rs':' ac co edu gov in org ',\n 'sb':' com edu gov net org ',\n 'sc':' com edu gov net org ',\n 'sh':' co com edu gov net nom org ',\n 'sl':' com edu gov net org ',\n 'st':' co com consulado edu embaixada gov mil net org principe saotome store ',\n 'sv':' com edu gob org red ',\n 'sz':' ac co org ',\n 'tr':' av bbs bel biz com dr edu gen gov info k12 name net org pol tel tsk tv web ',\n 'tt':' aero biz cat co com coop edu gov info int jobs mil mobi museum name net org pro tel travel ',\n 'tw':' club com ebiz edu game gov idv mil net org ',\n 'mu':' ac co com gov net or org ',\n 'mz':' ac co edu gov org ',\n 'na':' co com ',\n 'nz':' ac co cri geek gen govt health iwi maori mil net org parliament school ',\n 'pa':' abo ac com edu gob ing med net nom org sld ',\n 'pt':' com edu gov int net nome org publ ',\n 'py':' com edu gov mil net org ',\n 'qa':' com edu gov mil net org ',\n 're':' asso com nom ',\n 'ru':' ac adygeya altai amur arkhangelsk astrakhan bashkiria belgorod bir bryansk buryatia cbg chel chelyabinsk chita chukotka chuvashia com dagestan e-burg edu gov grozny int irkutsk ivanovo izhevsk jar joshkar-ola kalmykia kaluga kamchatka karelia kazan kchr kemerovo khabarovsk khakassia khv kirov koenig komi kostroma kranoyarsk kuban kurgan kursk lipetsk magadan mari mari-el marine mil mordovia mosreg msk murmansk nalchik net nnov nov novosibirsk nsk omsk orenburg org oryol penza perm pp pskov ptz rnd ryazan sakhalin samara saratov simbirsk smolensk spb stavropol stv surgut tambov tatarstan tom tomsk tsaritsyn tsk tula tuva tver tyumen udm udmurtia ulan-ude vladikavkaz vladimir vladivostok volgograd vologda voronezh vrn vyatka yakutia yamal yekaterinburg yuzhno-sakhalinsk ',\n 'rw':' ac co com edu gouv gov int mil net ',\n 'sa':' com edu gov med net org pub sch ',\n 'sd':' com edu gov info med net org tv ',\n 'se':' a ac b bd c d e f g h i k l m n o org p parti pp press r s t tm u w x y z ',\n 'sg':' com edu gov idn net org per ',\n 'sn':' art com edu gouv org perso univ ',\n 'sy':' com edu gov mil net news org ',\n 'th':' ac co go in mi net or ',\n 'tj':' ac biz co com edu go gov info int mil name net nic org test web ',\n 'tn':' agrinet com defense edunet ens fin gov ind info intl mincom nat net org perso rnrt rns rnu tourism ',\n 'tz':' ac co go ne or ',\n 'ua':' biz cherkassy chernigov chernovtsy ck cn co com crimea cv dn dnepropetrovsk donetsk dp edu gov if in ivano-frankivsk kh kharkov kherson khmelnitskiy kiev kirovograd km kr ks kv lg lugansk lutsk lviv me mk net nikolaev od odessa org pl poltava pp rovno rv sebastopol sumy te ternopil uzhgorod vinnica vn zaporizhzhe zhitomir zp zt ',\n 'ug':' ac co go ne or org sc ',\n 'uk':' ac bl british-library co cym gov govt icnet jet lea ltd me mil mod national-library-scotland nel net nhs nic nls org orgn parliament plc police sch scot soc ',\n 'us':' dni fed isa kids nsn ',\n 'uy':' com edu gub mil net org ',\n 've':' co com edu gob info mil net org web ',\n 'vi':' co com k12 net org ',\n 'vn':' ac biz com edu gov health info int name net org pro ',\n 'ye':' co com gov ltd me net org plc ',\n 'yu':' ac co edu gov org ',\n 'za':' ac agric alt bourse city co cybernet db edu gov grondar iaccess imt inca landesign law mil net ngo nis nom olivetti org pix school tm web ',\n 'zm':' ac co com edu gov net org sch ',\n // https://en.wikipedia.org/wiki/CentralNic#Second-level_domains\n 'com': 'ar br cn de eu gb gr hu jpn kr no qc ru sa se uk us uy za ',\n 'net': 'gb jp se uk ',\n 'org': 'ae',\n 'de': 'com '\n },\n // gorhill 2013-10-25: Using indexOf() instead Regexp(). Significant boost\n // in both performance and memory footprint. No initialization required.\n // http://jsperf.com/uri-js-sld-regex-vs-binary-search/4\n // Following methods use lastIndexOf() rather than array.split() in order\n // to avoid any memory allocations.\n has: function(domain) {\n var tldOffset = domain.lastIndexOf('.');\n if (tldOffset <= 0 || tldOffset >= (domain.length-1)) {\n return false;\n }\n var sldOffset = domain.lastIndexOf('.', tldOffset-1);\n if (sldOffset <= 0 || sldOffset >= (tldOffset-1)) {\n return false;\n }\n var sldList = SLD.list[domain.slice(tldOffset+1)];\n if (!sldList) {\n return false;\n }\n return sldList.indexOf(' ' + domain.slice(sldOffset+1, tldOffset) + ' ') >= 0;\n },\n is: function(domain) {\n var tldOffset = domain.lastIndexOf('.');\n if (tldOffset <= 0 || tldOffset >= (domain.length-1)) {\n return false;\n }\n var sldOffset = domain.lastIndexOf('.', tldOffset-1);\n if (sldOffset >= 0) {\n return false;\n }\n var sldList = SLD.list[domain.slice(tldOffset+1)];\n if (!sldList) {\n return false;\n }\n return sldList.indexOf(' ' + domain.slice(0, tldOffset) + ' ') >= 0;\n },\n get: function(domain) {\n var tldOffset = domain.lastIndexOf('.');\n if (tldOffset <= 0 || tldOffset >= (domain.length-1)) {\n return null;\n }\n var sldOffset = domain.lastIndexOf('.', tldOffset-1);\n if (sldOffset <= 0 || sldOffset >= (tldOffset-1)) {\n return null;\n }\n var sldList = SLD.list[domain.slice(tldOffset+1)];\n if (!sldList) {\n return null;\n }\n if (sldList.indexOf(' ' + domain.slice(sldOffset+1, tldOffset) + ' ') < 0) {\n return null;\n }\n return domain.slice(sldOffset+1);\n },\n noConflict: function(){\n if (root.SecondLevelDomains === this) {\n root.SecondLevelDomains = _SecondLevelDomains;\n }\n return this;\n }\n };\n\n return SLD;\n}));\n", "/*!\n * URI.js - Mutating URLs\n *\n * Version: 1.19.11\n *\n * Author: Rodney Rehm\n * Web: http://medialize.github.io/URI.js/\n *\n * Licensed under\n * MIT License http://www.opensource.org/licenses/mit-license\n *\n */\n(function (root, factory) {\n 'use strict';\n // https://github.com/umdjs/umd/blob/master/returnExports.js\n if (typeof module === 'object' && module.exports) {\n // Node\n module.exports = factory(require('./punycode'), require('./IPv6'), require('./SecondLevelDomains'));\n } else if (typeof define === 'function' && define.amd) {\n // AMD. Register as an anonymous module.\n define(['./punycode', './IPv6', './SecondLevelDomains'], factory);\n } else {\n // Browser globals (root is window)\n root.URI = factory(root.punycode, root.IPv6, root.SecondLevelDomains, root);\n }\n}(this, function (punycode, IPv6, SLD, root) {\n 'use strict';\n /*global location, escape, unescape */\n // FIXME: v2.0.0 renamce non-camelCase properties to uppercase\n /*jshint camelcase: false */\n\n // save current URI variable, if any\n var _URI = root && root.URI;\n\n function URI(url, base) {\n var _urlSupplied = arguments.length >= 1;\n var _baseSupplied = arguments.length >= 2;\n\n // Allow instantiation without the 'new' keyword\n if (!(this instanceof URI)) {\n if (_urlSupplied) {\n if (_baseSupplied) {\n return new URI(url, base);\n }\n\n return new URI(url);\n }\n\n return new URI();\n }\n\n if (url === undefined) {\n if (_urlSupplied) {\n throw new TypeError('undefined is not a valid argument for URI');\n }\n\n if (typeof location !== 'undefined') {\n url = location.href + '';\n } else {\n url = '';\n }\n }\n\n if (url === null) {\n if (_urlSupplied) {\n throw new TypeError('null is not a valid argument for URI');\n }\n }\n\n this.href(url);\n\n // resolve to base according to http://dvcs.w3.org/hg/url/raw-file/tip/Overview.html#constructor\n if (base !== undefined) {\n return this.absoluteTo(base);\n }\n\n return this;\n }\n\n function isInteger(value) {\n return /^[0-9]+$/.test(value);\n }\n\n URI.version = '1.19.11';\n\n var p = URI.prototype;\n var hasOwn = Object.prototype.hasOwnProperty;\n\n function escapeRegEx(string) {\n // https://github.com/medialize/URI.js/commit/85ac21783c11f8ccab06106dba9735a31a86924d#commitcomment-821963\n return string.replace(/([.*+?^=!:${}()|[\\]\\/\\\\])/g, '\\\\$1');\n }\n\n function getType(value) {\n // IE8 doesn't return [Object Undefined] but [Object Object] for undefined value\n if (value === undefined) {\n return 'Undefined';\n }\n\n return String(Object.prototype.toString.call(value)).slice(8, -1);\n }\n\n function isArray(obj) {\n return getType(obj) === 'Array';\n }\n\n function filterArrayValues(data, value) {\n var lookup = {};\n var i, length;\n\n if (getType(value) === 'RegExp') {\n lookup = null;\n } else if (isArray(value)) {\n for (i = 0, length = value.length; i < length; i++) {\n lookup[value[i]] = true;\n }\n } else {\n lookup[value] = true;\n }\n\n for (i = 0, length = data.length; i < length; i++) {\n /*jshint laxbreak: true */\n var _match = lookup && lookup[data[i]] !== undefined\n || !lookup && value.test(data[i]);\n /*jshint laxbreak: false */\n if (_match) {\n data.splice(i, 1);\n length--;\n i--;\n }\n }\n\n return data;\n }\n\n function arrayContains(list, value) {\n var i, length;\n\n // value may be string, number, array, regexp\n if (isArray(value)) {\n // Note: this can be optimized to O(n) (instead of current O(m * n))\n for (i = 0, length = value.length; i < length; i++) {\n if (!arrayContains(list, value[i])) {\n return false;\n }\n }\n\n return true;\n }\n\n var _type = getType(value);\n for (i = 0, length = list.length; i < length; i++) {\n if (_type === 'RegExp') {\n if (typeof list[i] === 'string' && list[i].match(value)) {\n return true;\n }\n } else if (list[i] === value) {\n return true;\n }\n }\n\n return false;\n }\n\n function arraysEqual(one, two) {\n if (!isArray(one) || !isArray(two)) {\n return false;\n }\n\n // arrays can't be equal if they have different amount of content\n if (one.length !== two.length) {\n return false;\n }\n\n one.sort();\n two.sort();\n\n for (var i = 0, l = one.length; i < l; i++) {\n if (one[i] !== two[i]) {\n return false;\n }\n }\n\n return true;\n }\n\n function trimSlashes(text) {\n var trim_expression = /^\\/+|\\/+$/g;\n return text.replace(trim_expression, '');\n }\n\n URI._parts = function() {\n return {\n protocol: null,\n username: null,\n password: null,\n hostname: null,\n urn: null,\n port: null,\n path: null,\n query: null,\n fragment: null,\n // state\n preventInvalidHostname: URI.preventInvalidHostname,\n duplicateQueryParameters: URI.duplicateQueryParameters,\n escapeQuerySpace: URI.escapeQuerySpace\n };\n };\n // state: throw on invalid hostname\n // see https://github.com/medialize/URI.js/pull/345\n // and https://github.com/medialize/URI.js/issues/354\n URI.preventInvalidHostname = false;\n // state: allow duplicate query parameters (a=1&a=1)\n URI.duplicateQueryParameters = false;\n // state: replaces + with %20 (space in query strings)\n URI.escapeQuerySpace = true;\n // static properties\n URI.protocol_expression = /^[a-z][a-z0-9.+-]*$/i;\n URI.idn_expression = /[^a-z0-9\\._-]/i;\n URI.punycode_expression = /(xn--)/i;\n // well, 333.444.555.666 matches, but it sure ain't no IPv4 - do we care?\n URI.ip4_expression = /^\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}$/;\n // credits to Rich Brown\n // source: http://forums.intermapper.com/viewtopic.php?p=1096#1096\n // specification: http://www.ietf.org/rfc/rfc4291.txt\n URI.ip6_expression = /^\\s*((([0-9A-Fa-f]{1,4}:){7}([0-9A-Fa-f]{1,4}|:))|(([0-9A-Fa-f]{1,4}:){6}(:[0-9A-Fa-f]{1,4}|((25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)(\\.(25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)){3})|:))|(([0-9A-Fa-f]{1,4}:){5}(((:[0-9A-Fa-f]{1,4}){1,2})|:((25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)(\\.(25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)){3})|:))|(([0-9A-Fa-f]{1,4}:){4}(((:[0-9A-Fa-f]{1,4}){1,3})|((:[0-9A-Fa-f]{1,4})?:((25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)(\\.(25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)){3}))|:))|(([0-9A-Fa-f]{1,4}:){3}(((:[0-9A-Fa-f]{1,4}){1,4})|((:[0-9A-Fa-f]{1,4}){0,2}:((25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)(\\.(25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)){3}))|:))|(([0-9A-Fa-f]{1,4}:){2}(((:[0-9A-Fa-f]{1,4}){1,5})|((:[0-9A-Fa-f]{1,4}){0,3}:((25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)(\\.(25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)){3}))|:))|(([0-9A-Fa-f]{1,4}:){1}(((:[0-9A-Fa-f]{1,4}){1,6})|((:[0-9A-Fa-f]{1,4}){0,4}:((25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)(\\.(25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)){3}))|:))|(:(((:[0-9A-Fa-f]{1,4}){1,7})|((:[0-9A-Fa-f]{1,4}){0,5}:((25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)(\\.(25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)){3}))|:)))(%.+)?\\s*$/;\n // expression used is \"gruber revised\" (@gruber v2) determined to be the\n // best solution in a regex-golf we did a couple of ages ago at\n // * http://mathiasbynens.be/demo/url-regex\n // * http://rodneyrehm.de/t/url-regex.html\n URI.find_uri_expression = /\\b((?:[a-z][\\w-]+:(?:\\/{1,3}|[a-z0-9%])|www\\d{0,3}[.]|[a-z0-9.\\-]+[.][a-z]{2,4}\\/)(?:[^\\s()<>]+|\\(([^\\s()<>]+|(\\([^\\s()<>]+\\)))*\\))+(?:\\(([^\\s()<>]+|(\\([^\\s()<>]+\\)))*\\)|[^\\s`!()\\[\\]{};:'\".,<>?\u00AB\u00BB\u201C\u201D\u2018\u2019]))/ig;\n URI.findUri = {\n // valid \"scheme://\" or \"www.\"\n start: /\\b(?:([a-z][a-z0-9.+-]*:\\/\\/)|www\\.)/gi,\n // everything up to the next whitespace\n end: /[\\s\\r\\n]|$/,\n // trim trailing punctuation captured by end RegExp\n trim: /[`!()\\[\\]{};:'\".,<>?\u00AB\u00BB\u201C\u201D\u201E\u2018\u2019]+$/,\n // balanced parens inclusion (), [], {}, <>\n parens: /(\\([^\\)]*\\)|\\[[^\\]]*\\]|\\{[^}]*\\}|<[^>]*>)/g,\n };\n URI.leading_whitespace_expression = /^[\\x00-\\x20\\u00a0\\u1680\\u2000-\\u200a\\u2028\\u2029\\u202f\\u205f\\u3000\\ufeff]+/\n // https://infra.spec.whatwg.org/#ascii-tab-or-newline\n URI.ascii_tab_whitespace = /[\\u0009\\u000A\\u000D]+/g\n // http://www.iana.org/assignments/uri-schemes.html\n // http://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbers#Well-known_ports\n URI.defaultPorts = {\n http: '80',\n https: '443',\n ftp: '21',\n gopher: '70',\n ws: '80',\n wss: '443'\n };\n // list of protocols which always require a hostname\n URI.hostProtocols = [\n 'http',\n 'https'\n ];\n\n // allowed hostname characters according to RFC 3986\n // ALPHA DIGIT \"-\" \".\" \"_\" \"~\" \"!\" \"$\" \"&\" \"'\" \"(\" \")\" \"*\" \"+\" \",\" \";\" \"=\" %encoded\n // I've never seen a (non-IDN) hostname other than: ALPHA DIGIT . - _\n URI.invalid_hostname_characters = /[^a-zA-Z0-9\\.\\-:_]/;\n // map DOM Elements to their URI attribute\n URI.domAttributes = {\n 'a': 'href',\n 'blockquote': 'cite',\n 'link': 'href',\n 'base': 'href',\n 'script': 'src',\n 'form': 'action',\n 'img': 'src',\n 'area': 'href',\n 'iframe': 'src',\n 'embed': 'src',\n 'source': 'src',\n 'track': 'src',\n 'input': 'src', // but only if type=\"image\"\n 'audio': 'src',\n 'video': 'src'\n };\n URI.getDomAttribute = function(node) {\n if (!node || !node.nodeName) {\n return undefined;\n }\n\n var nodeName = node.nodeName.toLowerCase();\n // should only expose src for type=\"image\"\n if (nodeName === 'input' && node.type !== 'image') {\n return undefined;\n }\n\n return URI.domAttributes[nodeName];\n };\n\n function escapeForDumbFirefox36(value) {\n // https://github.com/medialize/URI.js/issues/91\n return escape(value);\n }\n\n // encoding / decoding according to RFC3986\n function strictEncodeURIComponent(string) {\n // see https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/encodeURIComponent\n return encodeURIComponent(string)\n .replace(/[!'()*]/g, escapeForDumbFirefox36)\n .replace(/\\*/g, '%2A');\n }\n URI.encode = strictEncodeURIComponent;\n URI.decode = decodeURIComponent;\n URI.iso8859 = function() {\n URI.encode = escape;\n URI.decode = unescape;\n };\n URI.unicode = function() {\n URI.encode = strictEncodeURIComponent;\n URI.decode = decodeURIComponent;\n };\n URI.characters = {\n pathname: {\n encode: {\n // RFC3986 2.1: For consistency, URI producers and normalizers should\n // use uppercase hexadecimal digits for all percent-encodings.\n expression: /%(24|26|2B|2C|3B|3D|3A|40)/ig,\n map: {\n // -._~!'()*\n '%24': '$',\n '%26': '&',\n '%2B': '+',\n '%2C': ',',\n '%3B': ';',\n '%3D': '=',\n '%3A': ':',\n '%40': '@'\n }\n },\n decode: {\n expression: /[\\/\\?#]/g,\n map: {\n '/': '%2F',\n '?': '%3F',\n '#': '%23'\n }\n }\n },\n reserved: {\n encode: {\n // RFC3986 2.1: For consistency, URI producers and normalizers should\n // use uppercase hexadecimal digits for all percent-encodings.\n expression: /%(21|23|24|26|27|28|29|2A|2B|2C|2F|3A|3B|3D|3F|40|5B|5D)/ig,\n map: {\n // gen-delims\n '%3A': ':',\n '%2F': '/',\n '%3F': '?',\n '%23': '#',\n '%5B': '[',\n '%5D': ']',\n '%40': '@',\n // sub-delims\n '%21': '!',\n '%24': '$',\n '%26': '&',\n '%27': '\\'',\n '%28': '(',\n '%29': ')',\n '%2A': '*',\n '%2B': '+',\n '%2C': ',',\n '%3B': ';',\n '%3D': '='\n }\n }\n },\n urnpath: {\n // The characters under `encode` are the characters called out by RFC 2141 as being acceptable\n // for usage in a URN. RFC2141 also calls out \"-\", \".\", and \"_\" as acceptable characters, but\n // these aren't encoded by encodeURIComponent, so we don't have to call them out here. Also\n // note that the colon character is not featured in the encoding map; this is because URI.js\n // gives the colons in URNs semantic meaning as the delimiters of path segements, and so it\n // should not appear unencoded in a segment itself.\n // See also the note above about RFC3986 and capitalalized hex digits.\n encode: {\n expression: /%(21|24|27|28|29|2A|2B|2C|3B|3D|40)/ig,\n map: {\n '%21': '!',\n '%24': '$',\n '%27': '\\'',\n '%28': '(',\n '%29': ')',\n '%2A': '*',\n '%2B': '+',\n '%2C': ',',\n '%3B': ';',\n '%3D': '=',\n '%40': '@'\n }\n },\n // These characters are the characters called out by RFC2141 as \"reserved\" characters that\n // should never appear in a URN, plus the colon character (see note above).\n decode: {\n expression: /[\\/\\?#:]/g,\n map: {\n '/': '%2F',\n '?': '%3F',\n '#': '%23',\n ':': '%3A'\n }\n }\n }\n };\n URI.encodeQuery = function(string, escapeQuerySpace) {\n var escaped = URI.encode(string + '');\n if (escapeQuerySpace === undefined) {\n escapeQuerySpace = URI.escapeQuerySpace;\n }\n\n return escapeQuerySpace ? escaped.replace(/%20/g, '+') : escaped;\n };\n URI.decodeQuery = function(string, escapeQuerySpace) {\n string += '';\n if (escapeQuerySpace === undefined) {\n escapeQuerySpace = URI.escapeQuerySpace;\n }\n\n try {\n return URI.decode(escapeQuerySpace ? string.replace(/\\+/g, '%20') : string);\n } catch(e) {\n // we're not going to mess with weird encodings,\n // give up and return the undecoded original string\n // see https://github.com/medialize/URI.js/issues/87\n // see https://github.com/medialize/URI.js/issues/92\n return string;\n }\n };\n // generate encode/decode path functions\n var _parts = {'encode':'encode', 'decode':'decode'};\n var _part;\n var generateAccessor = function(_group, _part) {\n return function(string) {\n try {\n return URI[_part](string + '').replace(URI.characters[_group][_part].expression, function(c) {\n return URI.characters[_group][_part].map[c];\n });\n } catch (e) {\n // we're not going to mess with weird encodings,\n // give up and return the undecoded original string\n // see https://github.com/medialize/URI.js/issues/87\n // see https://github.com/medialize/URI.js/issues/92\n return string;\n }\n };\n };\n\n for (_part in _parts) {\n URI[_part + 'PathSegment'] = generateAccessor('pathname', _parts[_part]);\n URI[_part + 'UrnPathSegment'] = generateAccessor('urnpath', _parts[_part]);\n }\n\n var generateSegmentedPathFunction = function(_sep, _codingFuncName, _innerCodingFuncName) {\n return function(string) {\n // Why pass in names of functions, rather than the function objects themselves? The\n // definitions of some functions (but in particular, URI.decode) will occasionally change due\n // to URI.js having ISO8859 and Unicode modes. Passing in the name and getting it will ensure\n // that the functions we use here are \"fresh\".\n var actualCodingFunc;\n if (!_innerCodingFuncName) {\n actualCodingFunc = URI[_codingFuncName];\n } else {\n actualCodingFunc = function(string) {\n return URI[_codingFuncName](URI[_innerCodingFuncName](string));\n };\n }\n\n var segments = (string + '').split(_sep);\n\n for (var i = 0, length = segments.length; i < length; i++) {\n segments[i] = actualCodingFunc(segments[i]);\n }\n\n return segments.join(_sep);\n };\n };\n\n // This takes place outside the above loop because we don't want, e.g., encodeUrnPath functions.\n URI.decodePath = generateSegmentedPathFunction('/', 'decodePathSegment');\n URI.decodeUrnPath = generateSegmentedPathFunction(':', 'decodeUrnPathSegment');\n URI.recodePath = generateSegmentedPathFunction('/', 'encodePathSegment', 'decode');\n URI.recodeUrnPath = generateSegmentedPathFunction(':', 'encodeUrnPathSegment', 'decode');\n\n URI.encodeReserved = generateAccessor('reserved', 'encode');\n\n URI.parse = function(string, parts) {\n var pos;\n if (!parts) {\n parts = {\n preventInvalidHostname: URI.preventInvalidHostname\n };\n }\n\n string = string.replace(URI.leading_whitespace_expression, '')\n // https://infra.spec.whatwg.org/#ascii-tab-or-newline\n string = string.replace(URI.ascii_tab_whitespace, '')\n\n // [protocol\"://\"[username[\":\"password]\"@\"]hostname[\":\"port]\"/\"?][path][\"?\"querystring][\"#\"fragment]\n\n // extract fragment\n pos = string.indexOf('#');\n if (pos > -1) {\n // escaping?\n parts.fragment = string.substring(pos + 1) || null;\n string = string.substring(0, pos);\n }\n\n // extract query\n pos = string.indexOf('?');\n if (pos > -1) {\n // escaping?\n parts.query = string.substring(pos + 1) || null;\n string = string.substring(0, pos);\n }\n\n // slashes and backslashes have lost all meaning for the web protocols (https, http, wss, ws)\n string = string.replace(/^(https?|ftp|wss?)?:+[/\\\\]*/i, '$1://');\n // slashes and backslashes have lost all meaning for scheme relative URLs\n string = string.replace(/^[/\\\\]{2,}/i, '//');\n\n // extract protocol\n if (string.substring(0, 2) === '//') {\n // relative-scheme\n parts.protocol = null;\n string = string.substring(2);\n // extract \"user:pass@host:port\"\n string = URI.parseAuthority(string, parts);\n } else {\n pos = string.indexOf(':');\n if (pos > -1) {\n parts.protocol = string.substring(0, pos) || null;\n if (parts.protocol && !parts.protocol.match(URI.protocol_expression)) {\n // : may be within the path\n parts.protocol = undefined;\n } else if (string.substring(pos + 1, pos + 3).replace(/\\\\/g, '/') === '//') {\n string = string.substring(pos + 3);\n\n // extract \"user:pass@host:port\"\n string = URI.parseAuthority(string, parts);\n } else {\n string = string.substring(pos + 1);\n parts.urn = true;\n }\n }\n }\n\n // what's left must be the path\n parts.path = string;\n\n // and we're done\n return parts;\n };\n URI.parseHost = function(string, parts) {\n if (!string) {\n string = '';\n }\n\n // Copy chrome, IE, opera backslash-handling behavior.\n // Back slashes before the query string get converted to forward slashes\n // See: https://github.com/joyent/node/blob/386fd24f49b0e9d1a8a076592a404168faeecc34/lib/url.js#L115-L124\n // See: https://code.google.com/p/chromium/issues/detail?id=25916\n // https://github.com/medialize/URI.js/pull/233\n string = string.replace(/\\\\/g, '/');\n\n // extract host:port\n var pos = string.indexOf('/');\n var bracketPos;\n var t;\n\n if (pos === -1) {\n pos = string.length;\n }\n\n if (string.charAt(0) === '[') {\n // IPv6 host - http://tools.ietf.org/html/draft-ietf-6man-text-addr-representation-04#section-6\n // I claim most client software breaks on IPv6 anyways. To simplify things, URI only accepts\n // IPv6+port in the format [2001:db8::1]:80 (for the time being)\n bracketPos = string.indexOf(']');\n parts.hostname = string.substring(1, bracketPos) || null;\n parts.port = string.substring(bracketPos + 2, pos) || null;\n if (parts.port === '/') {\n parts.port = null;\n }\n } else {\n var firstColon = string.indexOf(':');\n var firstSlash = string.indexOf('/');\n var nextColon = string.indexOf(':', firstColon + 1);\n if (nextColon !== -1 && (firstSlash === -1 || nextColon < firstSlash)) {\n // IPv6 host contains multiple colons - but no port\n // this notation is actually not allowed by RFC 3986, but we're a liberal parser\n parts.hostname = string.substring(0, pos) || null;\n parts.port = null;\n } else {\n t = string.substring(0, pos).split(':');\n parts.hostname = t[0] || null;\n parts.port = t[1] || null;\n }\n }\n\n if (parts.hostname && string.substring(pos).charAt(0) !== '/') {\n pos++;\n string = '/' + string;\n }\n\n if (parts.preventInvalidHostname) {\n URI.ensureValidHostname(parts.hostname, parts.protocol);\n }\n\n if (parts.port) {\n URI.ensureValidPort(parts.port);\n }\n\n return string.substring(pos) || '/';\n };\n URI.parseAuthority = function(string, parts) {\n string = URI.parseUserinfo(string, parts);\n return URI.parseHost(string, parts);\n };\n URI.parseUserinfo = function(string, parts) {\n // extract username:password\n var _string = string\n var firstBackSlash = string.indexOf('\\\\');\n if (firstBackSlash !== -1) {\n string = string.replace(/\\\\/g, '/')\n }\n var firstSlash = string.indexOf('/');\n var pos = string.lastIndexOf('@', firstSlash > -1 ? firstSlash : string.length - 1);\n var t;\n\n // authority@ must come before /path or \\path\n if (pos > -1 && (firstSlash === -1 || pos < firstSlash)) {\n t = string.substring(0, pos).split(':');\n parts.username = t[0] ? URI.decode(t[0]) : null;\n t.shift();\n parts.password = t[0] ? URI.decode(t.join(':')) : null;\n string = _string.substring(pos + 1);\n } else {\n parts.username = null;\n parts.password = null;\n }\n\n return string;\n };\n URI.parseQuery = function(string, escapeQuerySpace) {\n if (!string) {\n return {};\n }\n\n // throw out the funky business - \"?\"[name\"=\"value\"&\"]+\n string = string.replace(/&+/g, '&').replace(/^\\?*&*|&+$/g, '');\n\n if (!string) {\n return {};\n }\n\n var items = {};\n var splits = string.split('&');\n var length = splits.length;\n var v, name, value;\n\n for (var i = 0; i < length; i++) {\n v = splits[i].split('=');\n name = URI.decodeQuery(v.shift(), escapeQuerySpace);\n // no \"=\" is null according to http://dvcs.w3.org/hg/url/raw-file/tip/Overview.html#collect-url-parameters\n value = v.length ? URI.decodeQuery(v.join('='), escapeQuerySpace) : null;\n\n if (name === '__proto__') {\n // ignore attempt at exploiting JavaScript internals\n continue;\n } else if (hasOwn.call(items, name)) {\n if (typeof items[name] === 'string' || items[name] === null) {\n items[name] = [items[name]];\n }\n\n items[name].push(value);\n } else {\n items[name] = value;\n }\n }\n\n return items;\n };\n\n URI.build = function(parts) {\n var t = '';\n var requireAbsolutePath = false\n\n if (parts.protocol) {\n t += parts.protocol + ':';\n }\n\n if (!parts.urn && (t || parts.hostname)) {\n t += '//';\n requireAbsolutePath = true\n }\n\n t += (URI.buildAuthority(parts) || '');\n\n if (typeof parts.path === 'string') {\n if (parts.path.charAt(0) !== '/' && requireAbsolutePath) {\n t += '/';\n }\n\n t += parts.path;\n }\n\n if (typeof parts.query === 'string' && parts.query) {\n t += '?' + parts.query;\n }\n\n if (typeof parts.fragment === 'string' && parts.fragment) {\n t += '#' + parts.fragment;\n }\n return t;\n };\n URI.buildHost = function(parts) {\n var t = '';\n\n if (!parts.hostname) {\n return '';\n } else if (URI.ip6_expression.test(parts.hostname)) {\n t += '[' + parts.hostname + ']';\n } else {\n t += parts.hostname;\n }\n\n if (parts.port) {\n t += ':' + parts.port;\n }\n\n return t;\n };\n URI.buildAuthority = function(parts) {\n return URI.buildUserinfo(parts) + URI.buildHost(parts);\n };\n URI.buildUserinfo = function(parts) {\n var t = '';\n\n if (parts.username) {\n t += URI.encode(parts.username);\n }\n\n if (parts.password) {\n t += ':' + URI.encode(parts.password);\n }\n\n if (t) {\n t += '@';\n }\n\n return t;\n };\n URI.buildQuery = function(data, duplicateQueryParameters, escapeQuerySpace) {\n // according to http://tools.ietf.org/html/rfc3986 or http://labs.apache.org/webarch/uri/rfc/rfc3986.html\n // being \u00BB-._~!$&'()*+,;=:@/?\u00AB %HEX and alnum are allowed\n // the RFC explicitly states ?/foo being a valid use case, no mention of parameter syntax!\n // URI.js treats the query string as being application/x-www-form-urlencoded\n // see http://www.w3.org/TR/REC-html40/interact/forms.html#form-content-type\n\n var t = '';\n var unique, key, i, length;\n for (key in data) {\n if (key === '__proto__') {\n // ignore attempt at exploiting JavaScript internals\n continue;\n } else if (hasOwn.call(data, key)) {\n if (isArray(data[key])) {\n unique = {};\n for (i = 0, length = data[key].length; i < length; i++) {\n if (data[key][i] !== undefined && unique[data[key][i] + ''] === undefined) {\n t += '&' + URI.buildQueryParameter(key, data[key][i], escapeQuerySpace);\n if (duplicateQueryParameters !== true) {\n unique[data[key][i] + ''] = true;\n }\n }\n }\n } else if (data[key] !== undefined) {\n t += '&' + URI.buildQueryParameter(key, data[key], escapeQuerySpace);\n }\n }\n }\n\n return t.substring(1);\n };\n URI.buildQueryParameter = function(name, value, escapeQuerySpace) {\n // http://www.w3.org/TR/REC-html40/interact/forms.html#form-content-type -- application/x-www-form-urlencoded\n // don't append \"=\" for null values, according to http://dvcs.w3.org/hg/url/raw-file/tip/Overview.html#url-parameter-serialization\n return URI.encodeQuery(name, escapeQuerySpace) + (value !== null ? '=' + URI.encodeQuery(value, escapeQuerySpace) : '');\n };\n\n URI.addQuery = function(data, name, value) {\n if (typeof name === 'object') {\n for (var key in name) {\n if (hasOwn.call(name, key)) {\n URI.addQuery(data, key, name[key]);\n }\n }\n } else if (typeof name === 'string') {\n if (data[name] === undefined) {\n data[name] = value;\n return;\n } else if (typeof data[name] === 'string') {\n data[name] = [data[name]];\n }\n\n if (!isArray(value)) {\n value = [value];\n }\n\n data[name] = (data[name] || []).concat(value);\n } else {\n throw new TypeError('URI.addQuery() accepts an object, string as the name parameter');\n }\n };\n\n URI.setQuery = function(data, name, value) {\n if (typeof name === 'object') {\n for (var key in name) {\n if (hasOwn.call(name, key)) {\n URI.setQuery(data, key, name[key]);\n }\n }\n } else if (typeof name === 'string') {\n data[name] = value === undefined ? null : value;\n } else {\n throw new TypeError('URI.setQuery() accepts an object, string as the name parameter');\n }\n };\n\n URI.removeQuery = function(data, name, value) {\n var i, length, key;\n\n if (isArray(name)) {\n for (i = 0, length = name.length; i < length; i++) {\n data[name[i]] = undefined;\n }\n } else if (getType(name) === 'RegExp') {\n for (key in data) {\n if (name.test(key)) {\n data[key] = undefined;\n }\n }\n } else if (typeof name === 'object') {\n for (key in name) {\n if (hasOwn.call(name, key)) {\n URI.removeQuery(data, key, name[key]);\n }\n }\n } else if (typeof name === 'string') {\n if (value !== undefined) {\n if (getType(value) === 'RegExp') {\n if (!isArray(data[name]) && value.test(data[name])) {\n data[name] = undefined;\n } else {\n data[name] = filterArrayValues(data[name], value);\n }\n } else if (data[name] === String(value) && (!isArray(value) || value.length === 1)) {\n data[name] = undefined;\n } else if (isArray(data[name])) {\n data[name] = filterArrayValues(data[name], value);\n }\n } else {\n data[name] = undefined;\n }\n } else {\n throw new TypeError('URI.removeQuery() accepts an object, string, RegExp as the first parameter');\n }\n };\n URI.hasQuery = function(data, name, value, withinArray) {\n switch (getType(name)) {\n case 'String':\n // Nothing to do here\n break;\n\n case 'RegExp':\n for (var key in data) {\n if (hasOwn.call(data, key)) {\n if (name.test(key) && (value === undefined || URI.hasQuery(data, key, value))) {\n return true;\n }\n }\n }\n\n return false;\n\n case 'Object':\n for (var _key in name) {\n if (hasOwn.call(name, _key)) {\n if (!URI.hasQuery(data, _key, name[_key])) {\n return false;\n }\n }\n }\n\n return true;\n\n default:\n throw new TypeError('URI.hasQuery() accepts a string, regular expression or object as the name parameter');\n }\n\n switch (getType(value)) {\n case 'Undefined':\n // true if exists (but may be empty)\n return name in data; // data[name] !== undefined;\n\n case 'Boolean':\n // true if exists and non-empty\n var _booly = Boolean(isArray(data[name]) ? data[name].length : data[name]);\n return value === _booly;\n\n case 'Function':\n // allow complex comparison\n return !!value(data[name], name, data);\n\n case 'Array':\n if (!isArray(data[name])) {\n return false;\n }\n\n var op = withinArray ? arrayContains : arraysEqual;\n return op(data[name], value);\n\n case 'RegExp':\n if (!isArray(data[name])) {\n return Boolean(data[name] && data[name].match(value));\n }\n\n if (!withinArray) {\n return false;\n }\n\n return arrayContains(data[name], value);\n\n case 'Number':\n value = String(value);\n /* falls through */\n case 'String':\n if (!isArray(data[name])) {\n return data[name] === value;\n }\n\n if (!withinArray) {\n return false;\n }\n\n return arrayContains(data[name], value);\n\n default:\n throw new TypeError('URI.hasQuery() accepts undefined, boolean, string, number, RegExp, Function as the value parameter');\n }\n };\n\n\n URI.joinPaths = function() {\n var input = [];\n var segments = [];\n var nonEmptySegments = 0;\n\n for (var i = 0; i < arguments.length; i++) {\n var url = new URI(arguments[i]);\n input.push(url);\n var _segments = url.segment();\n for (var s = 0; s < _segments.length; s++) {\n if (typeof _segments[s] === 'string') {\n segments.push(_segments[s]);\n }\n\n if (_segments[s]) {\n nonEmptySegments++;\n }\n }\n }\n\n if (!segments.length || !nonEmptySegments) {\n return new URI('');\n }\n\n var uri = new URI('').segment(segments);\n\n if (input[0].path() === '' || input[0].path().slice(0, 1) === '/') {\n uri.path('/' + uri.path());\n }\n\n return uri.normalize();\n };\n\n URI.commonPath = function(one, two) {\n var length = Math.min(one.length, two.length);\n var pos;\n\n // find first non-matching character\n for (pos = 0; pos < length; pos++) {\n if (one.charAt(pos) !== two.charAt(pos)) {\n pos--;\n break;\n }\n }\n\n if (pos < 1) {\n return one.charAt(0) === two.charAt(0) && one.charAt(0) === '/' ? '/' : '';\n }\n\n // revert to last /\n if (one.charAt(pos) !== '/' || two.charAt(pos) !== '/') {\n pos = one.substring(0, pos).lastIndexOf('/');\n }\n\n return one.substring(0, pos + 1);\n };\n\n URI.withinString = function(string, callback, options) {\n options || (options = {});\n var _start = options.start || URI.findUri.start;\n var _end = options.end || URI.findUri.end;\n var _trim = options.trim || URI.findUri.trim;\n var _parens = options.parens || URI.findUri.parens;\n var _attributeOpen = /[a-z0-9-]=[\"']?$/i;\n\n _start.lastIndex = 0;\n while (true) {\n var match = _start.exec(string);\n if (!match) {\n break;\n }\n\n var start = match.index;\n if (options.ignoreHtml) {\n // attribut(e=[\"']?$)\n var attributeOpen = string.slice(Math.max(start - 3, 0), start);\n if (attributeOpen && _attributeOpen.test(attributeOpen)) {\n continue;\n }\n }\n\n var end = start + string.slice(start).search(_end);\n var slice = string.slice(start, end);\n // make sure we include well balanced parens\n var parensEnd = -1;\n while (true) {\n var parensMatch = _parens.exec(slice);\n if (!parensMatch) {\n break;\n }\n\n var parensMatchEnd = parensMatch.index + parensMatch[0].length;\n parensEnd = Math.max(parensEnd, parensMatchEnd);\n }\n\n if (parensEnd > -1) {\n slice = slice.slice(0, parensEnd) + slice.slice(parensEnd).replace(_trim, '');\n } else {\n slice = slice.replace(_trim, '');\n }\n\n if (slice.length <= match[0].length) {\n // the extract only contains the starting marker of a URI,\n // e.g. \"www\" or \"http://\"\n continue;\n }\n\n if (options.ignore && options.ignore.test(slice)) {\n continue;\n }\n\n end = start + slice.length;\n var result = callback(slice, start, end, string);\n if (result === undefined) {\n _start.lastIndex = end;\n continue;\n }\n\n result = String(result);\n string = string.slice(0, start) + result + string.slice(end);\n _start.lastIndex = start + result.length;\n }\n\n _start.lastIndex = 0;\n return string;\n };\n\n URI.ensureValidHostname = function(v, protocol) {\n // Theoretically URIs allow percent-encoding in Hostnames (according to RFC 3986)\n // they are not part of DNS and therefore ignored by URI.js\n\n var hasHostname = !!v; // not null and not an empty string\n var hasProtocol = !!protocol;\n var rejectEmptyHostname = false;\n\n if (hasProtocol) {\n rejectEmptyHostname = arrayContains(URI.hostProtocols, protocol);\n }\n\n if (rejectEmptyHostname && !hasHostname) {\n throw new TypeError('Hostname cannot be empty, if protocol is ' + protocol);\n } else if (v && v.match(URI.invalid_hostname_characters)) {\n // test punycode\n if (!punycode) {\n throw new TypeError('Hostname \"' + v + '\" contains characters other than [A-Z0-9.-:_] and Punycode.js is not available');\n }\n if (punycode.toASCII(v).match(URI.invalid_hostname_characters)) {\n throw new TypeError('Hostname \"' + v + '\" contains characters other than [A-Z0-9.-:_]');\n }\n }\n };\n\n URI.ensureValidPort = function (v) {\n if (!v) {\n return;\n }\n\n var port = Number(v);\n if (isInteger(port) && (port > 0) && (port < 65536)) {\n return;\n }\n\n throw new TypeError('Port \"' + v + '\" is not a valid port');\n };\n\n // noConflict\n URI.noConflict = function(removeAll) {\n if (removeAll) {\n var unconflicted = {\n URI: this.noConflict()\n };\n\n if (root.URITemplate && typeof root.URITemplate.noConflict === 'function') {\n unconflicted.URITemplate = root.URITemplate.noConflict();\n }\n\n if (root.IPv6 && typeof root.IPv6.noConflict === 'function') {\n unconflicted.IPv6 = root.IPv6.noConflict();\n }\n\n if (root.SecondLevelDomains && typeof root.SecondLevelDomains.noConflict === 'function') {\n unconflicted.SecondLevelDomains = root.SecondLevelDomains.noConflict();\n }\n\n return unconflicted;\n } else if (root.URI === this) {\n root.URI = _URI;\n }\n\n return this;\n };\n\n p.build = function(deferBuild) {\n if (deferBuild === true) {\n this._deferred_build = true;\n } else if (deferBuild === undefined || this._deferred_build) {\n this._string = URI.build(this._parts);\n this._deferred_build = false;\n }\n\n return this;\n };\n\n p.clone = function() {\n return new URI(this);\n };\n\n p.valueOf = p.toString = function() {\n return this.build(false)._string;\n };\n\n\n function generateSimpleAccessor(_part){\n return function(v, build) {\n if (v === undefined) {\n return this._parts[_part] || '';\n } else {\n this._parts[_part] = v || null;\n this.build(!build);\n return this;\n }\n };\n }\n\n function generatePrefixAccessor(_part, _key){\n return function(v, build) {\n if (v === undefined) {\n return this._parts[_part] || '';\n } else {\n if (v !== null) {\n v = v + '';\n if (v.charAt(0) === _key) {\n v = v.substring(1);\n }\n }\n\n this._parts[_part] = v;\n this.build(!build);\n return this;\n }\n };\n }\n\n p.protocol = generateSimpleAccessor('protocol');\n p.username = generateSimpleAccessor('username');\n p.password = generateSimpleAccessor('password');\n p.hostname = generateSimpleAccessor('hostname');\n p.port = generateSimpleAccessor('port');\n p.query = generatePrefixAccessor('query', '?');\n p.fragment = generatePrefixAccessor('fragment', '#');\n\n p.search = function(v, build) {\n var t = this.query(v, build);\n return typeof t === 'string' && t.length ? ('?' + t) : t;\n };\n p.hash = function(v, build) {\n var t = this.fragment(v, build);\n return typeof t === 'string' && t.length ? ('#' + t) : t;\n };\n\n p.pathname = function(v, build) {\n if (v === undefined || v === true) {\n var res = this._parts.path || (this._parts.hostname ? '/' : '');\n return v ? (this._parts.urn ? URI.decodeUrnPath : URI.decodePath)(res) : res;\n } else {\n if (this._parts.urn) {\n this._parts.path = v ? URI.recodeUrnPath(v) : '';\n } else {\n this._parts.path = v ? URI.recodePath(v) : '/';\n }\n this.build(!build);\n return this;\n }\n };\n p.path = p.pathname;\n p.href = function(href, build) {\n var key;\n\n if (href === undefined) {\n return this.toString();\n }\n\n this._string = '';\n this._parts = URI._parts();\n\n var _URI = href instanceof URI;\n var _object = typeof href === 'object' && (href.hostname || href.path || href.pathname);\n if (href.nodeName) {\n var attribute = URI.getDomAttribute(href);\n href = href[attribute] || '';\n _object = false;\n }\n\n // window.location is reported to be an object, but it's not the sort\n // of object we're looking for:\n // * location.protocol ends with a colon\n // * location.query != object.search\n // * location.hash != object.fragment\n // simply serializing the unknown object should do the trick\n // (for location, not for everything...)\n if (!_URI && _object && href.pathname !== undefined) {\n href = href.toString();\n }\n\n if (typeof href === 'string' || href instanceof String) {\n this._parts = URI.parse(String(href), this._parts);\n } else if (_URI || _object) {\n var src = _URI ? href._parts : href;\n for (key in src) {\n if (key === 'query') { continue; }\n if (hasOwn.call(this._parts, key)) {\n this._parts[key] = src[key];\n }\n }\n if (src.query) {\n this.query(src.query, false);\n }\n } else {\n throw new TypeError('invalid input');\n }\n\n this.build(!build);\n return this;\n };\n\n // identification accessors\n p.is = function(what) {\n var ip = false;\n var ip4 = false;\n var ip6 = false;\n var name = false;\n var sld = false;\n var idn = false;\n var punycode = false;\n var relative = !this._parts.urn;\n\n if (this._parts.hostname) {\n relative = false;\n ip4 = URI.ip4_expression.test(this._parts.hostname);\n ip6 = URI.ip6_expression.test(this._parts.hostname);\n ip = ip4 || ip6;\n name = !ip;\n sld = name && SLD && SLD.has(this._parts.hostname);\n idn = name && URI.idn_expression.test(this._parts.hostname);\n punycode = name && URI.punycode_expression.test(this._parts.hostname);\n }\n\n switch (what.toLowerCase()) {\n case 'relative':\n return relative;\n\n case 'absolute':\n return !relative;\n\n // hostname identification\n case 'domain':\n case 'name':\n return name;\n\n case 'sld':\n return sld;\n\n case 'ip':\n return ip;\n\n case 'ip4':\n case 'ipv4':\n case 'inet4':\n return ip4;\n\n case 'ip6':\n case 'ipv6':\n case 'inet6':\n return ip6;\n\n case 'idn':\n return idn;\n\n case 'url':\n return !this._parts.urn;\n\n case 'urn':\n return !!this._parts.urn;\n\n case 'punycode':\n return punycode;\n }\n\n return null;\n };\n\n // component specific input validation\n var _protocol = p.protocol;\n var _port = p.port;\n var _hostname = p.hostname;\n\n p.protocol = function(v, build) {\n if (v) {\n // accept trailing ://\n v = v.replace(/:(\\/\\/)?$/, '');\n\n if (!v.match(URI.protocol_expression)) {\n throw new TypeError('Protocol \"' + v + '\" contains characters other than [A-Z0-9.+-] or doesn\\'t start with [A-Z]');\n }\n }\n\n return _protocol.call(this, v, build);\n };\n p.scheme = p.protocol;\n p.port = function(v, build) {\n if (this._parts.urn) {\n return v === undefined ? '' : this;\n }\n\n if (v !== undefined) {\n if (v === 0) {\n v = null;\n }\n\n if (v) {\n v += '';\n if (v.charAt(0) === ':') {\n v = v.substring(1);\n }\n\n URI.ensureValidPort(v);\n }\n }\n return _port.call(this, v, build);\n };\n p.hostname = function(v, build) {\n if (this._parts.urn) {\n return v === undefined ? '' : this;\n }\n\n if (v !== undefined) {\n var x = { preventInvalidHostname: this._parts.preventInvalidHostname };\n var res = URI.parseHost(v, x);\n if (res !== '/') {\n throw new TypeError('Hostname \"' + v + '\" contains characters other than [A-Z0-9.-]');\n }\n\n v = x.hostname;\n if (this._parts.preventInvalidHostname) {\n URI.ensureValidHostname(v, this._parts.protocol);\n }\n }\n\n return _hostname.call(this, v, build);\n };\n\n // compound accessors\n p.origin = function(v, build) {\n if (this._parts.urn) {\n return v === undefined ? '' : this;\n }\n\n if (v === undefined) {\n var protocol = this.protocol();\n var authority = this.authority();\n if (!authority) {\n return '';\n }\n\n return (protocol ? protocol + '://' : '') + this.authority();\n } else {\n var origin = URI(v);\n this\n .protocol(origin.protocol())\n .authority(origin.authority())\n .build(!build);\n return this;\n }\n };\n p.host = function(v, build) {\n if (this._parts.urn) {\n return v === undefined ? '' : this;\n }\n\n if (v === undefined) {\n return this._parts.hostname ? URI.buildHost(this._parts) : '';\n } else {\n var res = URI.parseHost(v, this._parts);\n if (res !== '/') {\n throw new TypeError('Hostname \"' + v + '\" contains characters other than [A-Z0-9.-]');\n }\n\n this.build(!build);\n return this;\n }\n };\n p.authority = function(v, build) {\n if (this._parts.urn) {\n return v === undefined ? '' : this;\n }\n\n if (v === undefined) {\n return this._parts.hostname ? URI.buildAuthority(this._parts) : '';\n } else {\n var res = URI.parseAuthority(v, this._parts);\n if (res !== '/') {\n throw new TypeError('Hostname \"' + v + '\" contains characters other than [A-Z0-9.-]');\n }\n\n this.build(!build);\n return this;\n }\n };\n p.userinfo = function(v, build) {\n if (this._parts.urn) {\n return v === undefined ? '' : this;\n }\n\n if (v === undefined) {\n var t = URI.buildUserinfo(this._parts);\n return t ? t.substring(0, t.length -1) : t;\n } else {\n if (v[v.length-1] !== '@') {\n v += '@';\n }\n\n URI.parseUserinfo(v, this._parts);\n this.build(!build);\n return this;\n }\n };\n p.resource = function(v, build) {\n var parts;\n\n if (v === undefined) {\n return this.path() + this.search() + this.hash();\n }\n\n parts = URI.parse(v);\n this._parts.path = parts.path;\n this._parts.query = parts.query;\n this._parts.fragment = parts.fragment;\n this.build(!build);\n return this;\n };\n\n // fraction accessors\n p.subdomain = function(v, build) {\n if (this._parts.urn) {\n return v === undefined ? '' : this;\n }\n\n // convenience, return \"www\" from \"www.example.org\"\n if (v === undefined) {\n if (!this._parts.hostname || this.is('IP')) {\n return '';\n }\n\n // grab domain and add another segment\n var end = this._parts.hostname.length - this.domain().length - 1;\n return this._parts.hostname.substring(0, end) || '';\n } else {\n var e = this._parts.hostname.length - this.domain().length;\n var sub = this._parts.hostname.substring(0, e);\n var replace = new RegExp('^' + escapeRegEx(sub));\n\n if (v && v.charAt(v.length - 1) !== '.') {\n v += '.';\n }\n\n if (v.indexOf(':') !== -1) {\n throw new TypeError('Domains cannot contain colons');\n }\n\n if (v) {\n URI.ensureValidHostname(v, this._parts.protocol);\n }\n\n this._parts.hostname = this._parts.hostname.replace(replace, v);\n this.build(!build);\n return this;\n }\n };\n p.domain = function(v, build) {\n if (this._parts.urn) {\n return v === undefined ? '' : this;\n }\n\n if (typeof v === 'boolean') {\n build = v;\n v = undefined;\n }\n\n // convenience, return \"example.org\" from \"www.example.org\"\n if (v === undefined) {\n if (!this._parts.hostname || this.is('IP')) {\n return '';\n }\n\n // if hostname consists of 1 or 2 segments, it must be the domain\n var t = this._parts.hostname.match(/\\./g);\n if (t && t.length < 2) {\n return this._parts.hostname;\n }\n\n // grab tld and add another segment\n var end = this._parts.hostname.length - this.tld(build).length - 1;\n end = this._parts.hostname.lastIndexOf('.', end -1) + 1;\n return this._parts.hostname.substring(end) || '';\n } else {\n if (!v) {\n throw new TypeError('cannot set domain empty');\n }\n\n if (v.indexOf(':') !== -1) {\n throw new TypeError('Domains cannot contain colons');\n }\n\n URI.ensureValidHostname(v, this._parts.protocol);\n\n if (!this._parts.hostname || this.is('IP')) {\n this._parts.hostname = v;\n } else {\n var replace = new RegExp(escapeRegEx(this.domain()) + '$');\n this._parts.hostname = this._parts.hostname.replace(replace, v);\n }\n\n this.build(!build);\n return this;\n }\n };\n p.tld = function(v, build) {\n if (this._parts.urn) {\n return v === undefined ? '' : this;\n }\n\n if (typeof v === 'boolean') {\n build = v;\n v = undefined;\n }\n\n // return \"org\" from \"www.example.org\"\n if (v === undefined) {\n if (!this._parts.hostname || this.is('IP')) {\n return '';\n }\n\n var pos = this._parts.hostname.lastIndexOf('.');\n var tld = this._parts.hostname.substring(pos + 1);\n\n if (build !== true && SLD && SLD.list[tld.toLowerCase()]) {\n return SLD.get(this._parts.hostname) || tld;\n }\n\n return tld;\n } else {\n var replace;\n\n if (!v) {\n throw new TypeError('cannot set TLD empty');\n } else if (v.match(/[^a-zA-Z0-9-]/)) {\n if (SLD && SLD.is(v)) {\n replace = new RegExp(escapeRegEx(this.tld()) + '$');\n this._parts.hostname = this._parts.hostname.replace(replace, v);\n } else {\n throw new TypeError('TLD \"' + v + '\" contains characters other than [A-Z0-9]');\n }\n } else if (!this._parts.hostname || this.is('IP')) {\n throw new ReferenceError('cannot set TLD on non-domain host');\n } else {\n replace = new RegExp(escapeRegEx(this.tld()) + '$');\n this._parts.hostname = this._parts.hostname.replace(replace, v);\n }\n\n this.build(!build);\n return this;\n }\n };\n p.directory = function(v, build) {\n if (this._parts.urn) {\n return v === undefined ? '' : this;\n }\n\n if (v === undefined || v === true) {\n if (!this._parts.path && !this._parts.hostname) {\n return '';\n }\n\n if (this._parts.path === '/') {\n return '/';\n }\n\n var end = this._parts.path.length - this.filename().length - 1;\n var res = this._parts.path.substring(0, end) || (this._parts.hostname ? '/' : '');\n\n return v ? URI.decodePath(res) : res;\n\n } else {\n var e = this._parts.path.length - this.filename().length;\n var directory = this._parts.path.substring(0, e);\n var replace = new RegExp('^' + escapeRegEx(directory));\n\n // fully qualifier directories begin with a slash\n if (!this.is('relative')) {\n if (!v) {\n v = '/';\n }\n\n if (v.charAt(0) !== '/') {\n v = '/' + v;\n }\n }\n\n // directories always end with a slash\n if (v && v.charAt(v.length - 1) !== '/') {\n v += '/';\n }\n\n v = URI.recodePath(v);\n this._parts.path = this._parts.path.replace(replace, v);\n this.build(!build);\n return this;\n }\n };\n p.filename = function(v, build) {\n if (this._parts.urn) {\n return v === undefined ? '' : this;\n }\n\n if (typeof v !== 'string') {\n if (!this._parts.path || this._parts.path === '/') {\n return '';\n }\n\n var pos = this._parts.path.lastIndexOf('/');\n var res = this._parts.path.substring(pos+1);\n\n return v ? URI.decodePathSegment(res) : res;\n } else {\n var mutatedDirectory = false;\n\n if (v.charAt(0) === '/') {\n v = v.substring(1);\n }\n\n if (v.match(/\\.?\\//)) {\n mutatedDirectory = true;\n }\n\n var replace = new RegExp(escapeRegEx(this.filename()) + '$');\n v = URI.recodePath(v);\n this._parts.path = this._parts.path.replace(replace, v);\n\n if (mutatedDirectory) {\n this.normalizePath(build);\n } else {\n this.build(!build);\n }\n\n return this;\n }\n };\n p.suffix = function(v, build) {\n if (this._parts.urn) {\n return v === undefined ? '' : this;\n }\n\n if (v === undefined || v === true) {\n if (!this._parts.path || this._parts.path === '/') {\n return '';\n }\n\n var filename = this.filename();\n var pos = filename.lastIndexOf('.');\n var s, res;\n\n if (pos === -1) {\n return '';\n }\n\n // suffix may only contain alnum characters (yup, I made this up.)\n s = filename.substring(pos+1);\n res = (/^[a-z0-9%]+$/i).test(s) ? s : '';\n return v ? URI.decodePathSegment(res) : res;\n } else {\n if (v.charAt(0) === '.') {\n v = v.substring(1);\n }\n\n var suffix = this.suffix();\n var replace;\n\n if (!suffix) {\n if (!v) {\n return this;\n }\n\n this._parts.path += '.' + URI.recodePath(v);\n } else if (!v) {\n replace = new RegExp(escapeRegEx('.' + suffix) + '$');\n } else {\n replace = new RegExp(escapeRegEx(suffix) + '$');\n }\n\n if (replace) {\n v = URI.recodePath(v);\n this._parts.path = this._parts.path.replace(replace, v);\n }\n\n this.build(!build);\n return this;\n }\n };\n p.segment = function(segment, v, build) {\n var separator = this._parts.urn ? ':' : '/';\n var path = this.path();\n var absolute = path.substring(0, 1) === '/';\n var segments = path.split(separator);\n\n if (segment !== undefined && typeof segment !== 'number') {\n build = v;\n v = segment;\n segment = undefined;\n }\n\n if (segment !== undefined && typeof segment !== 'number') {\n throw new Error('Bad segment \"' + segment + '\", must be 0-based integer');\n }\n\n if (absolute) {\n segments.shift();\n }\n\n if (segment < 0) {\n // allow negative indexes to address from the end\n segment = Math.max(segments.length + segment, 0);\n }\n\n if (v === undefined) {\n /*jshint laxbreak: true */\n return segment === undefined\n ? segments\n : segments[segment];\n /*jshint laxbreak: false */\n } else if (segment === null || segments[segment] === undefined) {\n if (isArray(v)) {\n segments = [];\n // collapse empty elements within array\n for (var i=0, l=v.length; i < l; i++) {\n if (!v[i].length && (!segments.length || !segments[segments.length -1].length)) {\n continue;\n }\n\n if (segments.length && !segments[segments.length -1].length) {\n segments.pop();\n }\n\n segments.push(trimSlashes(v[i]));\n }\n } else if (v || typeof v === 'string') {\n v = trimSlashes(v);\n if (segments[segments.length -1] === '') {\n // empty trailing elements have to be overwritten\n // to prevent results such as /foo//bar\n segments[segments.length -1] = v;\n } else {\n segments.push(v);\n }\n }\n } else {\n if (v) {\n segments[segment] = trimSlashes(v);\n } else {\n segments.splice(segment, 1);\n }\n }\n\n if (absolute) {\n segments.unshift('');\n }\n\n return this.path(segments.join(separator), build);\n };\n p.segmentCoded = function(segment, v, build) {\n var segments, i, l;\n\n if (typeof segment !== 'number') {\n build = v;\n v = segment;\n segment = undefined;\n }\n\n if (v === undefined) {\n segments = this.segment(segment, v, build);\n if (!isArray(segments)) {\n segments = segments !== undefined ? URI.decode(segments) : undefined;\n } else {\n for (i = 0, l = segments.length; i < l; i++) {\n segments[i] = URI.decode(segments[i]);\n }\n }\n\n return segments;\n }\n\n if (!isArray(v)) {\n v = (typeof v === 'string' || v instanceof String) ? URI.encode(v) : v;\n } else {\n for (i = 0, l = v.length; i < l; i++) {\n v[i] = URI.encode(v[i]);\n }\n }\n\n return this.segment(segment, v, build);\n };\n\n // mutating query string\n var q = p.query;\n p.query = function(v, build) {\n if (v === true) {\n return URI.parseQuery(this._parts.query, this._parts.escapeQuerySpace);\n } else if (typeof v === 'function') {\n var data = URI.parseQuery(this._parts.query, this._parts.escapeQuerySpace);\n var result = v.call(this, data);\n this._parts.query = URI.buildQuery(result || data, this._parts.duplicateQueryParameters, this._parts.escapeQuerySpace);\n this.build(!build);\n return this;\n } else if (v !== undefined && typeof v !== 'string') {\n this._parts.query = URI.buildQuery(v, this._parts.duplicateQueryParameters, this._parts.escapeQuerySpace);\n this.build(!build);\n return this;\n } else {\n return q.call(this, v, build);\n }\n };\n p.setQuery = function(name, value, build) {\n var data = URI.parseQuery(this._parts.query, this._parts.escapeQuerySpace);\n\n if (typeof name === 'string' || name instanceof String) {\n data[name] = value !== undefined ? value : null;\n } else if (typeof name === 'object') {\n for (var key in name) {\n if (hasOwn.call(name, key)) {\n data[key] = name[key];\n }\n }\n } else {\n throw new TypeError('URI.addQuery() accepts an object, string as the name parameter');\n }\n\n this._parts.query = URI.buildQuery(data, this._parts.duplicateQueryParameters, this._parts.escapeQuerySpace);\n if (typeof name !== 'string') {\n build = value;\n }\n\n this.build(!build);\n return this;\n };\n p.addQuery = function(name, value, build) {\n var data = URI.parseQuery(this._parts.query, this._parts.escapeQuerySpace);\n URI.addQuery(data, name, value === undefined ? null : value);\n this._parts.query = URI.buildQuery(data, this._parts.duplicateQueryParameters, this._parts.escapeQuerySpace);\n if (typeof name !== 'string') {\n build = value;\n }\n\n this.build(!build);\n return this;\n };\n p.removeQuery = function(name, value, build) {\n var data = URI.parseQuery(this._parts.query, this._parts.escapeQuerySpace);\n URI.removeQuery(data, name, value);\n this._parts.query = URI.buildQuery(data, this._parts.duplicateQueryParameters, this._parts.escapeQuerySpace);\n if (typeof name !== 'string') {\n build = value;\n }\n\n this.build(!build);\n return this;\n };\n p.hasQuery = function(name, value, withinArray) {\n var data = URI.parseQuery(this._parts.query, this._parts.escapeQuerySpace);\n return URI.hasQuery(data, name, value, withinArray);\n };\n p.setSearch = p.setQuery;\n p.addSearch = p.addQuery;\n p.removeSearch = p.removeQuery;\n p.hasSearch = p.hasQuery;\n\n // sanitizing URLs\n p.normalize = function() {\n if (this._parts.urn) {\n return this\n .normalizeProtocol(false)\n .normalizePath(false)\n .normalizeQuery(false)\n .normalizeFragment(false)\n .build();\n }\n\n return this\n .normalizeProtocol(false)\n .normalizeHostname(false)\n .normalizePort(false)\n .normalizePath(false)\n .normalizeQuery(false)\n .normalizeFragment(false)\n .build();\n };\n p.normalizeProtocol = function(build) {\n if (typeof this._parts.protocol === 'string') {\n this._parts.protocol = this._parts.protocol.toLowerCase();\n this.build(!build);\n }\n\n return this;\n };\n p.normalizeHostname = function(build) {\n if (this._parts.hostname) {\n if (this.is('IDN') && punycode) {\n this._parts.hostname = punycode.toASCII(this._parts.hostname);\n } else if (this.is('IPv6') && IPv6) {\n this._parts.hostname = IPv6.best(this._parts.hostname);\n }\n\n this._parts.hostname = this._parts.hostname.toLowerCase();\n this.build(!build);\n }\n\n return this;\n };\n p.normalizePort = function(build) {\n // remove port of it's the protocol's default\n if (typeof this._parts.protocol === 'string' && this._parts.port === URI.defaultPorts[this._parts.protocol]) {\n this._parts.port = null;\n this.build(!build);\n }\n\n return this;\n };\n p.normalizePath = function(build) {\n var _path = this._parts.path;\n if (!_path) {\n return this;\n }\n\n if (this._parts.urn) {\n this._parts.path = URI.recodeUrnPath(this._parts.path);\n this.build(!build);\n return this;\n }\n\n if (this._parts.path === '/') {\n return this;\n }\n\n _path = URI.recodePath(_path);\n\n var _was_relative;\n var _leadingParents = '';\n var _parent, _pos;\n\n // handle relative paths\n if (_path.charAt(0) !== '/') {\n _was_relative = true;\n _path = '/' + _path;\n }\n\n // handle relative files (as opposed to directories)\n if (_path.slice(-3) === '/..' || _path.slice(-2) === '/.') {\n _path += '/';\n }\n\n // resolve simples\n _path = _path\n .replace(/(\\/(\\.\\/)+)|(\\/\\.$)/g, '/')\n .replace(/\\/{2,}/g, '/');\n\n // remember leading parents\n if (_was_relative) {\n _leadingParents = _path.substring(1).match(/^(\\.\\.\\/)+/) || '';\n if (_leadingParents) {\n _leadingParents = _leadingParents[0];\n }\n }\n\n // resolve parents\n while (true) {\n _parent = _path.search(/\\/\\.\\.(\\/|$)/);\n if (_parent === -1) {\n // no more ../ to resolve\n break;\n } else if (_parent === 0) {\n // top level cannot be relative, skip it\n _path = _path.substring(3);\n continue;\n }\n\n _pos = _path.substring(0, _parent).lastIndexOf('/');\n if (_pos === -1) {\n _pos = _parent;\n }\n _path = _path.substring(0, _pos) + _path.substring(_parent + 3);\n }\n\n // revert to relative\n if (_was_relative && this.is('relative')) {\n _path = _leadingParents + _path.substring(1);\n }\n\n this._parts.path = _path;\n this.build(!build);\n return this;\n };\n p.normalizePathname = p.normalizePath;\n p.normalizeQuery = function(build) {\n if (typeof this._parts.query === 'string') {\n if (!this._parts.query.length) {\n this._parts.query = null;\n } else {\n this.query(URI.parseQuery(this._parts.query, this._parts.escapeQuerySpace));\n }\n\n this.build(!build);\n }\n\n return this;\n };\n p.normalizeFragment = function(build) {\n if (!this._parts.fragment) {\n this._parts.fragment = null;\n this.build(!build);\n }\n\n return this;\n };\n p.normalizeSearch = p.normalizeQuery;\n p.normalizeHash = p.normalizeFragment;\n\n p.iso8859 = function() {\n // expect unicode input, iso8859 output\n var e = URI.encode;\n var d = URI.decode;\n\n URI.encode = escape;\n URI.decode = decodeURIComponent;\n try {\n this.normalize();\n } finally {\n URI.encode = e;\n URI.decode = d;\n }\n return this;\n };\n\n p.unicode = function() {\n // expect iso8859 input, unicode output\n var e = URI.encode;\n var d = URI.decode;\n\n URI.encode = strictEncodeURIComponent;\n URI.decode = unescape;\n try {\n this.normalize();\n } finally {\n URI.encode = e;\n URI.decode = d;\n }\n return this;\n };\n\n p.readable = function() {\n var uri = this.clone();\n // removing username, password, because they shouldn't be displayed according to RFC 3986\n uri.username('').password('').normalize();\n var t = '';\n if (uri._parts.protocol) {\n t += uri._parts.protocol + '://';\n }\n\n if (uri._parts.hostname) {\n if (uri.is('punycode') && punycode) {\n t += punycode.toUnicode(uri._parts.hostname);\n if (uri._parts.port) {\n t += ':' + uri._parts.port;\n }\n } else {\n t += uri.host();\n }\n }\n\n if (uri._parts.hostname && uri._parts.path && uri._parts.path.charAt(0) !== '/') {\n t += '/';\n }\n\n t += uri.path(true);\n if (uri._parts.query) {\n var q = '';\n for (var i = 0, qp = uri._parts.query.split('&'), l = qp.length; i < l; i++) {\n var kv = (qp[i] || '').split('=');\n q += '&' + URI.decodeQuery(kv[0], this._parts.escapeQuerySpace)\n .replace(/&/g, '%26');\n\n if (kv[1] !== undefined) {\n q += '=' + URI.decodeQuery(kv[1], this._parts.escapeQuerySpace)\n .replace(/&/g, '%26');\n }\n }\n t += '?' + q.substring(1);\n }\n\n t += URI.decodeQuery(uri.hash(), true);\n return t;\n };\n\n // resolving relative and absolute URLs\n p.absoluteTo = function(base) {\n var resolved = this.clone();\n var properties = ['protocol', 'username', 'password', 'hostname', 'port'];\n var basedir, i, p;\n\n if (this._parts.urn) {\n throw new Error('URNs do not have any generally defined hierarchical components');\n }\n\n if (!(base instanceof URI)) {\n base = new URI(base);\n }\n\n if (resolved._parts.protocol) {\n // Directly returns even if this._parts.hostname is empty.\n return resolved;\n } else {\n resolved._parts.protocol = base._parts.protocol;\n }\n\n if (this._parts.hostname) {\n return resolved;\n }\n\n for (i = 0; (p = properties[i]); i++) {\n resolved._parts[p] = base._parts[p];\n }\n\n if (!resolved._parts.path) {\n resolved._parts.path = base._parts.path;\n if (!resolved._parts.query) {\n resolved._parts.query = base._parts.query;\n }\n } else {\n if (resolved._parts.path.substring(-2) === '..') {\n resolved._parts.path += '/';\n }\n\n if (resolved.path().charAt(0) !== '/') {\n basedir = base.directory();\n basedir = basedir ? basedir : base.path().indexOf('/') === 0 ? '/' : '';\n resolved._parts.path = (basedir ? (basedir + '/') : '') + resolved._parts.path;\n resolved.normalizePath();\n }\n }\n\n resolved.build();\n return resolved;\n };\n p.relativeTo = function(base) {\n var relative = this.clone().normalize();\n var relativeParts, baseParts, common, relativePath, basePath;\n\n if (relative._parts.urn) {\n throw new Error('URNs do not have any generally defined hierarchical components');\n }\n\n base = new URI(base).normalize();\n relativeParts = relative._parts;\n baseParts = base._parts;\n relativePath = relative.path();\n basePath = base.path();\n\n if (relativePath.charAt(0) !== '/') {\n throw new Error('URI is already relative');\n }\n\n if (basePath.charAt(0) !== '/') {\n throw new Error('Cannot calculate a URI relative to another relative URI');\n }\n\n if (relativeParts.protocol === baseParts.protocol) {\n relativeParts.protocol = null;\n }\n\n if (relativeParts.username !== baseParts.username || relativeParts.password !== baseParts.password) {\n return relative.build();\n }\n\n if (relativeParts.protocol !== null || relativeParts.username !== null || relativeParts.password !== null) {\n return relative.build();\n }\n\n if (relativeParts.hostname === baseParts.hostname && relativeParts.port === baseParts.port) {\n relativeParts.hostname = null;\n relativeParts.port = null;\n } else {\n return relative.build();\n }\n\n if (relativePath === basePath) {\n relativeParts.path = '';\n return relative.build();\n }\n\n // determine common sub path\n common = URI.commonPath(relativePath, basePath);\n\n // If the paths have nothing in common, return a relative URL with the absolute path.\n if (!common) {\n return relative.build();\n }\n\n var parents = baseParts.path\n .substring(common.length)\n .replace(/[^\\/]*$/, '')\n .replace(/.*?\\//g, '../');\n\n relativeParts.path = (parents + relativeParts.path.substring(common.length)) || './';\n\n return relative.build();\n };\n\n // comparing URIs\n p.equals = function(uri) {\n var one = this.clone();\n var two = new URI(uri);\n var one_map = {};\n var two_map = {};\n var checked = {};\n var one_query, two_query, key;\n\n one.normalize();\n two.normalize();\n\n // exact match\n if (one.toString() === two.toString()) {\n return true;\n }\n\n // extract query string\n one_query = one.query();\n two_query = two.query();\n one.query('');\n two.query('');\n\n // definitely not equal if not even non-query parts match\n if (one.toString() !== two.toString()) {\n return false;\n }\n\n // query parameters have the same length, even if they're permuted\n if (one_query.length !== two_query.length) {\n return false;\n }\n\n one_map = URI.parseQuery(one_query, this._parts.escapeQuerySpace);\n two_map = URI.parseQuery(two_query, this._parts.escapeQuerySpace);\n\n for (key in one_map) {\n if (hasOwn.call(one_map, key)) {\n if (!isArray(one_map[key])) {\n if (one_map[key] !== two_map[key]) {\n return false;\n }\n } else if (!arraysEqual(one_map[key], two_map[key])) {\n return false;\n }\n\n checked[key] = true;\n }\n }\n\n for (key in two_map) {\n if (hasOwn.call(two_map, key)) {\n if (!checked[key]) {\n // two contains a parameter not present in one\n return false;\n }\n }\n }\n\n return true;\n };\n\n // state\n p.preventInvalidHostname = function(v) {\n this._parts.preventInvalidHostname = !!v;\n return this;\n };\n\n p.duplicateQueryParameters = function(v) {\n this._parts.duplicateQueryParameters = !!v;\n return this;\n };\n\n p.escapeQuerySpace = function(v) {\n this._parts.escapeQuerySpace = !!v;\n return this;\n };\n\n return URI;\n}));\n", "// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/5/LICENSE\n\n// This is CodeMirror (https://codemirror.net/5), a code editor\n// implemented in JavaScript on top of the browser's DOM.\n//\n// You can find some technical background for some of the code below\n// at http://marijnhaverbeke.nl/blog/#cm-internals .\n\n(function (global, factory) {\n typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :\n typeof define === 'function' && define.amd ? define(factory) :\n (global = global || self, global.CodeMirror = factory());\n}(this, (function () { 'use strict';\n\n // Kludges for bugs and behavior differences that can't be feature\n // detected are enabled based on userAgent etc sniffing.\n var userAgent = navigator.userAgent;\n var platform = navigator.platform;\n\n var gecko = /gecko\\/\\d/i.test(userAgent);\n var ie_upto10 = /MSIE \\d/.test(userAgent);\n var ie_11up = /Trident\\/(?:[7-9]|\\d{2,})\\..*rv:(\\d+)/.exec(userAgent);\n var edge = /Edge\\/(\\d+)/.exec(userAgent);\n var ie = ie_upto10 || ie_11up || edge;\n var ie_version = ie && (ie_upto10 ? document.documentMode || 6 : +(edge || ie_11up)[1]);\n var webkit = !edge && /WebKit\\//.test(userAgent);\n var qtwebkit = webkit && /Qt\\/\\d+\\.\\d+/.test(userAgent);\n var chrome = !edge && /Chrome\\/(\\d+)/.exec(userAgent);\n var chrome_version = chrome && +chrome[1];\n var presto = /Opera\\//.test(userAgent);\n var safari = /Apple Computer/.test(navigator.vendor);\n var mac_geMountainLion = /Mac OS X 1\\d\\D([8-9]|\\d\\d)\\D/.test(userAgent);\n var phantom = /PhantomJS/.test(userAgent);\n\n var ios = safari && (/Mobile\\/\\w+/.test(userAgent) || navigator.maxTouchPoints > 2);\n var android = /Android/.test(userAgent);\n // This is woefully incomplete. Suggestions for alternative methods welcome.\n var mobile = ios || android || /webOS|BlackBerry|Opera Mini|Opera Mobi|IEMobile/i.test(userAgent);\n var mac = ios || /Mac/.test(platform);\n var chromeOS = /\\bCrOS\\b/.test(userAgent);\n var windows = /win/i.test(platform);\n\n var presto_version = presto && userAgent.match(/Version\\/(\\d*\\.\\d*)/);\n if (presto_version) { presto_version = Number(presto_version[1]); }\n if (presto_version && presto_version >= 15) { presto = false; webkit = true; }\n // Some browsers use the wrong event properties to signal cmd/ctrl on OS X\n var flipCtrlCmd = mac && (qtwebkit || presto && (presto_version == null || presto_version < 12.11));\n var captureRightClick = gecko || (ie && ie_version >= 9);\n\n function classTest(cls) { return new RegExp(\"(^|\\\\s)\" + cls + \"(?:$|\\\\s)\\\\s*\") }\n\n var rmClass = function(node, cls) {\n var current = node.className;\n var match = classTest(cls).exec(current);\n if (match) {\n var after = current.slice(match.index + match[0].length);\n node.className = current.slice(0, match.index) + (after ? match[1] + after : \"\");\n }\n };\n\n function removeChildren(e) {\n for (var count = e.childNodes.length; count > 0; --count)\n { e.removeChild(e.firstChild); }\n return e\n }\n\n function removeChildrenAndAdd(parent, e) {\n return removeChildren(parent).appendChild(e)\n }\n\n function elt(tag, content, className, style) {\n var e = document.createElement(tag);\n if (className) { e.className = className; }\n if (style) { e.style.cssText = style; }\n if (typeof content == \"string\") { e.appendChild(document.createTextNode(content)); }\n else if (content) { for (var i = 0; i < content.length; ++i) { e.appendChild(content[i]); } }\n return e\n }\n // wrapper for elt, which removes the elt from the accessibility tree\n function eltP(tag, content, className, style) {\n var e = elt(tag, content, className, style);\n e.setAttribute(\"role\", \"presentation\");\n return e\n }\n\n var range;\n if (document.createRange) { range = function(node, start, end, endNode) {\n var r = document.createRange();\n r.setEnd(endNode || node, end);\n r.setStart(node, start);\n return r\n }; }\n else { range = function(node, start, end) {\n var r = document.body.createTextRange();\n try { r.moveToElementText(node.parentNode); }\n catch(e) { return r }\n r.collapse(true);\n r.moveEnd(\"character\", end);\n r.moveStart(\"character\", start);\n return r\n }; }\n\n function contains(parent, child) {\n if (child.nodeType == 3) // Android browser always returns false when child is a textnode\n { child = child.parentNode; }\n if (parent.contains)\n { return parent.contains(child) }\n do {\n if (child.nodeType == 11) { child = child.host; }\n if (child == parent) { return true }\n } while (child = child.parentNode)\n }\n\n function activeElt(rootNode) {\n // IE and Edge may throw an \"Unspecified Error\" when accessing document.activeElement.\n // IE < 10 will throw when accessed while the page is loading or in an iframe.\n // IE > 9 and Edge will throw when accessed in an iframe if document.body is unavailable.\n var doc = rootNode.ownerDocument || rootNode;\n var activeElement;\n try {\n activeElement = rootNode.activeElement;\n } catch(e) {\n activeElement = doc.body || null;\n }\n while (activeElement && activeElement.shadowRoot && activeElement.shadowRoot.activeElement)\n { activeElement = activeElement.shadowRoot.activeElement; }\n return activeElement\n }\n\n function addClass(node, cls) {\n var current = node.className;\n if (!classTest(cls).test(current)) { node.className += (current ? \" \" : \"\") + cls; }\n }\n function joinClasses(a, b) {\n var as = a.split(\" \");\n for (var i = 0; i < as.length; i++)\n { if (as[i] && !classTest(as[i]).test(b)) { b += \" \" + as[i]; } }\n return b\n }\n\n var selectInput = function(node) { node.select(); };\n if (ios) // Mobile Safari apparently has a bug where select() is broken.\n { selectInput = function(node) { node.selectionStart = 0; node.selectionEnd = node.value.length; }; }\n else if (ie) // Suppress mysterious IE10 errors\n { selectInput = function(node) { try { node.select(); } catch(_e) {} }; }\n\n function doc(cm) { return cm.display.wrapper.ownerDocument }\n\n function root(cm) {\n return rootNode(cm.display.wrapper)\n }\n\n function rootNode(element) {\n // Detect modern browsers (2017+).\n return element.getRootNode ? element.getRootNode() : element.ownerDocument\n }\n\n function win(cm) { return doc(cm).defaultView }\n\n function bind(f) {\n var args = Array.prototype.slice.call(arguments, 1);\n return function(){return f.apply(null, args)}\n }\n\n function copyObj(obj, target, overwrite) {\n if (!target) { target = {}; }\n for (var prop in obj)\n { if (obj.hasOwnProperty(prop) && (overwrite !== false || !target.hasOwnProperty(prop)))\n { target[prop] = obj[prop]; } }\n return target\n }\n\n // Counts the column offset in a string, taking tabs into account.\n // Used mostly to find indentation.\n function countColumn(string, end, tabSize, startIndex, startValue) {\n if (end == null) {\n end = string.search(/[^\\s\\u00a0]/);\n if (end == -1) { end = string.length; }\n }\n for (var i = startIndex || 0, n = startValue || 0;;) {\n var nextTab = string.indexOf(\"\\t\", i);\n if (nextTab < 0 || nextTab >= end)\n { return n + (end - i) }\n n += nextTab - i;\n n += tabSize - (n % tabSize);\n i = nextTab + 1;\n }\n }\n\n var Delayed = function() {\n this.id = null;\n this.f = null;\n this.time = 0;\n this.handler = bind(this.onTimeout, this);\n };\n Delayed.prototype.onTimeout = function (self) {\n self.id = 0;\n if (self.time <= +new Date) {\n self.f();\n } else {\n setTimeout(self.handler, self.time - +new Date);\n }\n };\n Delayed.prototype.set = function (ms, f) {\n this.f = f;\n var time = +new Date + ms;\n if (!this.id || time < this.time) {\n clearTimeout(this.id);\n this.id = setTimeout(this.handler, ms);\n this.time = time;\n }\n };\n\n function indexOf(array, elt) {\n for (var i = 0; i < array.length; ++i)\n { if (array[i] == elt) { return i } }\n return -1\n }\n\n // Number of pixels added to scroller and sizer to hide scrollbar\n var scrollerGap = 50;\n\n // Returned or thrown by various protocols to signal 'I'm not\n // handling this'.\n var Pass = {toString: function(){return \"CodeMirror.Pass\"}};\n\n // Reused option objects for setSelection & friends\n var sel_dontScroll = {scroll: false}, sel_mouse = {origin: \"*mouse\"}, sel_move = {origin: \"+move\"};\n\n // The inverse of countColumn -- find the offset that corresponds to\n // a particular column.\n function findColumn(string, goal, tabSize) {\n for (var pos = 0, col = 0;;) {\n var nextTab = string.indexOf(\"\\t\", pos);\n if (nextTab == -1) { nextTab = string.length; }\n var skipped = nextTab - pos;\n if (nextTab == string.length || col + skipped >= goal)\n { return pos + Math.min(skipped, goal - col) }\n col += nextTab - pos;\n col += tabSize - (col % tabSize);\n pos = nextTab + 1;\n if (col >= goal) { return pos }\n }\n }\n\n var spaceStrs = [\"\"];\n function spaceStr(n) {\n while (spaceStrs.length <= n)\n { spaceStrs.push(lst(spaceStrs) + \" \"); }\n return spaceStrs[n]\n }\n\n function lst(arr) { return arr[arr.length-1] }\n\n function map(array, f) {\n var out = [];\n for (var i = 0; i < array.length; i++) { out[i] = f(array[i], i); }\n return out\n }\n\n function insertSorted(array, value, score) {\n var pos = 0, priority = score(value);\n while (pos < array.length && score(array[pos]) <= priority) { pos++; }\n array.splice(pos, 0, value);\n }\n\n function nothing() {}\n\n function createObj(base, props) {\n var inst;\n if (Object.create) {\n inst = Object.create(base);\n } else {\n nothing.prototype = base;\n inst = new nothing();\n }\n if (props) { copyObj(props, inst); }\n return inst\n }\n\n var nonASCIISingleCaseWordChar = /[\\u00df\\u0587\\u0590-\\u05f4\\u0600-\\u06ff\\u3040-\\u309f\\u30a0-\\u30ff\\u3400-\\u4db5\\u4e00-\\u9fcc\\uac00-\\ud7af]/;\n function isWordCharBasic(ch) {\n return /\\w/.test(ch) || ch > \"\\x80\" &&\n (ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch))\n }\n function isWordChar(ch, helper) {\n if (!helper) { return isWordCharBasic(ch) }\n if (helper.source.indexOf(\"\\\\w\") > -1 && isWordCharBasic(ch)) { return true }\n return helper.test(ch)\n }\n\n function isEmpty(obj) {\n for (var n in obj) { if (obj.hasOwnProperty(n) && obj[n]) { return false } }\n return true\n }\n\n // Extending unicode characters. A series of a non-extending char +\n // any number of extending chars is treated as a single unit as far\n // as editing and measuring is concerned. This is not fully correct,\n // since some scripts/fonts/browsers also treat other configurations\n // of code points as a group.\n var extendingChars = /[\\u0300-\\u036f\\u0483-\\u0489\\u0591-\\u05bd\\u05bf\\u05c1\\u05c2\\u05c4\\u05c5\\u05c7\\u0610-\\u061a\\u064b-\\u065e\\u0670\\u06d6-\\u06dc\\u06de-\\u06e4\\u06e7\\u06e8\\u06ea-\\u06ed\\u0711\\u0730-\\u074a\\u07a6-\\u07b0\\u07eb-\\u07f3\\u0816-\\u0819\\u081b-\\u0823\\u0825-\\u0827\\u0829-\\u082d\\u0900-\\u0902\\u093c\\u0941-\\u0948\\u094d\\u0951-\\u0955\\u0962\\u0963\\u0981\\u09bc\\u09be\\u09c1-\\u09c4\\u09cd\\u09d7\\u09e2\\u09e3\\u0a01\\u0a02\\u0a3c\\u0a41\\u0a42\\u0a47\\u0a48\\u0a4b-\\u0a4d\\u0a51\\u0a70\\u0a71\\u0a75\\u0a81\\u0a82\\u0abc\\u0ac1-\\u0ac5\\u0ac7\\u0ac8\\u0acd\\u0ae2\\u0ae3\\u0b01\\u0b3c\\u0b3e\\u0b3f\\u0b41-\\u0b44\\u0b4d\\u0b56\\u0b57\\u0b62\\u0b63\\u0b82\\u0bbe\\u0bc0\\u0bcd\\u0bd7\\u0c3e-\\u0c40\\u0c46-\\u0c48\\u0c4a-\\u0c4d\\u0c55\\u0c56\\u0c62\\u0c63\\u0cbc\\u0cbf\\u0cc2\\u0cc6\\u0ccc\\u0ccd\\u0cd5\\u0cd6\\u0ce2\\u0ce3\\u0d3e\\u0d41-\\u0d44\\u0d4d\\u0d57\\u0d62\\u0d63\\u0dca\\u0dcf\\u0dd2-\\u0dd4\\u0dd6\\u0ddf\\u0e31\\u0e34-\\u0e3a\\u0e47-\\u0e4e\\u0eb1\\u0eb4-\\u0eb9\\u0ebb\\u0ebc\\u0ec8-\\u0ecd\\u0f18\\u0f19\\u0f35\\u0f37\\u0f39\\u0f71-\\u0f7e\\u0f80-\\u0f84\\u0f86\\u0f87\\u0f90-\\u0f97\\u0f99-\\u0fbc\\u0fc6\\u102d-\\u1030\\u1032-\\u1037\\u1039\\u103a\\u103d\\u103e\\u1058\\u1059\\u105e-\\u1060\\u1071-\\u1074\\u1082\\u1085\\u1086\\u108d\\u109d\\u135f\\u1712-\\u1714\\u1732-\\u1734\\u1752\\u1753\\u1772\\u1773\\u17b7-\\u17bd\\u17c6\\u17c9-\\u17d3\\u17dd\\u180b-\\u180d\\u18a9\\u1920-\\u1922\\u1927\\u1928\\u1932\\u1939-\\u193b\\u1a17\\u1a18\\u1a56\\u1a58-\\u1a5e\\u1a60\\u1a62\\u1a65-\\u1a6c\\u1a73-\\u1a7c\\u1a7f\\u1b00-\\u1b03\\u1b34\\u1b36-\\u1b3a\\u1b3c\\u1b42\\u1b6b-\\u1b73\\u1b80\\u1b81\\u1ba2-\\u1ba5\\u1ba8\\u1ba9\\u1c2c-\\u1c33\\u1c36\\u1c37\\u1cd0-\\u1cd2\\u1cd4-\\u1ce0\\u1ce2-\\u1ce8\\u1ced\\u1dc0-\\u1de6\\u1dfd-\\u1dff\\u200c\\u200d\\u20d0-\\u20f0\\u2cef-\\u2cf1\\u2de0-\\u2dff\\u302a-\\u302f\\u3099\\u309a\\ua66f-\\ua672\\ua67c\\ua67d\\ua6f0\\ua6f1\\ua802\\ua806\\ua80b\\ua825\\ua826\\ua8c4\\ua8e0-\\ua8f1\\ua926-\\ua92d\\ua947-\\ua951\\ua980-\\ua982\\ua9b3\\ua9b6-\\ua9b9\\ua9bc\\uaa29-\\uaa2e\\uaa31\\uaa32\\uaa35\\uaa36\\uaa43\\uaa4c\\uaab0\\uaab2-\\uaab4\\uaab7\\uaab8\\uaabe\\uaabf\\uaac1\\uabe5\\uabe8\\uabed\\udc00-\\udfff\\ufb1e\\ufe00-\\ufe0f\\ufe20-\\ufe26\\uff9e\\uff9f]/;\n function isExtendingChar(ch) { return ch.charCodeAt(0) >= 768 && extendingChars.test(ch) }\n\n // Returns a number from the range [`0`; `str.length`] unless `pos` is outside that range.\n function skipExtendingChars(str, pos, dir) {\n while ((dir < 0 ? pos > 0 : pos < str.length) && isExtendingChar(str.charAt(pos))) { pos += dir; }\n return pos\n }\n\n // Returns the value from the range [`from`; `to`] that satisfies\n // `pred` and is closest to `from`. Assumes that at least `to`\n // satisfies `pred`. Supports `from` being greater than `to`.\n function findFirst(pred, from, to) {\n // At any point we are certain `to` satisfies `pred`, don't know\n // whether `from` does.\n var dir = from > to ? -1 : 1;\n for (;;) {\n if (from == to) { return from }\n var midF = (from + to) / 2, mid = dir < 0 ? Math.ceil(midF) : Math.floor(midF);\n if (mid == from) { return pred(mid) ? from : to }\n if (pred(mid)) { to = mid; }\n else { from = mid + dir; }\n }\n }\n\n // BIDI HELPERS\n\n function iterateBidiSections(order, from, to, f) {\n if (!order) { return f(from, to, \"ltr\", 0) }\n var found = false;\n for (var i = 0; i < order.length; ++i) {\n var part = order[i];\n if (part.from < to && part.to > from || from == to && part.to == from) {\n f(Math.max(part.from, from), Math.min(part.to, to), part.level == 1 ? \"rtl\" : \"ltr\", i);\n found = true;\n }\n }\n if (!found) { f(from, to, \"ltr\"); }\n }\n\n var bidiOther = null;\n function getBidiPartAt(order, ch, sticky) {\n var found;\n bidiOther = null;\n for (var i = 0; i < order.length; ++i) {\n var cur = order[i];\n if (cur.from < ch && cur.to > ch) { return i }\n if (cur.to == ch) {\n if (cur.from != cur.to && sticky == \"before\") { found = i; }\n else { bidiOther = i; }\n }\n if (cur.from == ch) {\n if (cur.from != cur.to && sticky != \"before\") { found = i; }\n else { bidiOther = i; }\n }\n }\n return found != null ? found : bidiOther\n }\n\n // Bidirectional ordering algorithm\n // See http://unicode.org/reports/tr9/tr9-13.html for the algorithm\n // that this (partially) implements.\n\n // One-char codes used for character types:\n // L (L): Left-to-Right\n // R (R): Right-to-Left\n // r (AL): Right-to-Left Arabic\n // 1 (EN): European Number\n // + (ES): European Number Separator\n // % (ET): European Number Terminator\n // n (AN): Arabic Number\n // , (CS): Common Number Separator\n // m (NSM): Non-Spacing Mark\n // b (BN): Boundary Neutral\n // s (B): Paragraph Separator\n // t (S): Segment Separator\n // w (WS): Whitespace\n // N (ON): Other Neutrals\n\n // Returns null if characters are ordered as they appear\n // (left-to-right), or an array of sections ({from, to, level}\n // objects) in the order in which they occur visually.\n var bidiOrdering = (function() {\n // Character types for codepoints 0 to 0xff\n var lowTypes = \"bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLN\";\n // Character types for codepoints 0x600 to 0x6f9\n var arabicTypes = \"nnnnnnNNr%%r,rNNmmmmmmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmmmnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmnNmmmmmmrrmmNmmmmrr1111111111\";\n function charType(code) {\n if (code <= 0xf7) { return lowTypes.charAt(code) }\n else if (0x590 <= code && code <= 0x5f4) { return \"R\" }\n else if (0x600 <= code && code <= 0x6f9) { return arabicTypes.charAt(code - 0x600) }\n else if (0x6ee <= code && code <= 0x8ac) { return \"r\" }\n else if (0x2000 <= code && code <= 0x200b) { return \"w\" }\n else if (code == 0x200c) { return \"b\" }\n else { return \"L\" }\n }\n\n var bidiRE = /[\\u0590-\\u05f4\\u0600-\\u06ff\\u0700-\\u08ac]/;\n var isNeutral = /[stwN]/, isStrong = /[LRr]/, countsAsLeft = /[Lb1n]/, countsAsNum = /[1n]/;\n\n function BidiSpan(level, from, to) {\n this.level = level;\n this.from = from; this.to = to;\n }\n\n return function(str, direction) {\n var outerType = direction == \"ltr\" ? \"L\" : \"R\";\n\n if (str.length == 0 || direction == \"ltr\" && !bidiRE.test(str)) { return false }\n var len = str.length, types = [];\n for (var i = 0; i < len; ++i)\n { types.push(charType(str.charCodeAt(i))); }\n\n // W1. Examine each non-spacing mark (NSM) in the level run, and\n // change the type of the NSM to the type of the previous\n // character. If the NSM is at the start of the level run, it will\n // get the type of sor.\n for (var i$1 = 0, prev = outerType; i$1 < len; ++i$1) {\n var type = types[i$1];\n if (type == \"m\") { types[i$1] = prev; }\n else { prev = type; }\n }\n\n // W2. Search backwards from each instance of a European number\n // until the first strong type (R, L, AL, or sor) is found. If an\n // AL is found, change the type of the European number to Arabic\n // number.\n // W3. Change all ALs to R.\n for (var i$2 = 0, cur = outerType; i$2 < len; ++i$2) {\n var type$1 = types[i$2];\n if (type$1 == \"1\" && cur == \"r\") { types[i$2] = \"n\"; }\n else if (isStrong.test(type$1)) { cur = type$1; if (type$1 == \"r\") { types[i$2] = \"R\"; } }\n }\n\n // W4. A single European separator between two European numbers\n // changes to a European number. A single common separator between\n // two numbers of the same type changes to that type.\n for (var i$3 = 1, prev$1 = types[0]; i$3 < len - 1; ++i$3) {\n var type$2 = types[i$3];\n if (type$2 == \"+\" && prev$1 == \"1\" && types[i$3+1] == \"1\") { types[i$3] = \"1\"; }\n else if (type$2 == \",\" && prev$1 == types[i$3+1] &&\n (prev$1 == \"1\" || prev$1 == \"n\")) { types[i$3] = prev$1; }\n prev$1 = type$2;\n }\n\n // W5. A sequence of European terminators adjacent to European\n // numbers changes to all European numbers.\n // W6. Otherwise, separators and terminators change to Other\n // Neutral.\n for (var i$4 = 0; i$4 < len; ++i$4) {\n var type$3 = types[i$4];\n if (type$3 == \",\") { types[i$4] = \"N\"; }\n else if (type$3 == \"%\") {\n var end = (void 0);\n for (end = i$4 + 1; end < len && types[end] == \"%\"; ++end) {}\n var replace = (i$4 && types[i$4-1] == \"!\") || (end < len && types[end] == \"1\") ? \"1\" : \"N\";\n for (var j = i$4; j < end; ++j) { types[j] = replace; }\n i$4 = end - 1;\n }\n }\n\n // W7. Search backwards from each instance of a European number\n // until the first strong type (R, L, or sor) is found. If an L is\n // found, then change the type of the European number to L.\n for (var i$5 = 0, cur$1 = outerType; i$5 < len; ++i$5) {\n var type$4 = types[i$5];\n if (cur$1 == \"L\" && type$4 == \"1\") { types[i$5] = \"L\"; }\n else if (isStrong.test(type$4)) { cur$1 = type$4; }\n }\n\n // N1. A sequence of neutrals takes the direction of the\n // surrounding strong text if the text on both sides has the same\n // direction. European and Arabic numbers act as if they were R in\n // terms of their influence on neutrals. Start-of-level-run (sor)\n // and end-of-level-run (eor) are used at level run boundaries.\n // N2. Any remaining neutrals take the embedding direction.\n for (var i$6 = 0; i$6 < len; ++i$6) {\n if (isNeutral.test(types[i$6])) {\n var end$1 = (void 0);\n for (end$1 = i$6 + 1; end$1 < len && isNeutral.test(types[end$1]); ++end$1) {}\n var before = (i$6 ? types[i$6-1] : outerType) == \"L\";\n var after = (end$1 < len ? types[end$1] : outerType) == \"L\";\n var replace$1 = before == after ? (before ? \"L\" : \"R\") : outerType;\n for (var j$1 = i$6; j$1 < end$1; ++j$1) { types[j$1] = replace$1; }\n i$6 = end$1 - 1;\n }\n }\n\n // Here we depart from the documented algorithm, in order to avoid\n // building up an actual levels array. Since there are only three\n // levels (0, 1, 2) in an implementation that doesn't take\n // explicit embedding into account, we can build up the order on\n // the fly, without following the level-based algorithm.\n var order = [], m;\n for (var i$7 = 0; i$7 < len;) {\n if (countsAsLeft.test(types[i$7])) {\n var start = i$7;\n for (++i$7; i$7 < len && countsAsLeft.test(types[i$7]); ++i$7) {}\n order.push(new BidiSpan(0, start, i$7));\n } else {\n var pos = i$7, at = order.length, isRTL = direction == \"rtl\" ? 1 : 0;\n for (++i$7; i$7 < len && types[i$7] != \"L\"; ++i$7) {}\n for (var j$2 = pos; j$2 < i$7;) {\n if (countsAsNum.test(types[j$2])) {\n if (pos < j$2) { order.splice(at, 0, new BidiSpan(1, pos, j$2)); at += isRTL; }\n var nstart = j$2;\n for (++j$2; j$2 < i$7 && countsAsNum.test(types[j$2]); ++j$2) {}\n order.splice(at, 0, new BidiSpan(2, nstart, j$2));\n at += isRTL;\n pos = j$2;\n } else { ++j$2; }\n }\n if (pos < i$7) { order.splice(at, 0, new BidiSpan(1, pos, i$7)); }\n }\n }\n if (direction == \"ltr\") {\n if (order[0].level == 1 && (m = str.match(/^\\s+/))) {\n order[0].from = m[0].length;\n order.unshift(new BidiSpan(0, 0, m[0].length));\n }\n if (lst(order).level == 1 && (m = str.match(/\\s+$/))) {\n lst(order).to -= m[0].length;\n order.push(new BidiSpan(0, len - m[0].length, len));\n }\n }\n\n return direction == \"rtl\" ? order.reverse() : order\n }\n })();\n\n // Get the bidi ordering for the given line (and cache it). Returns\n // false for lines that are fully left-to-right, and an array of\n // BidiSpan objects otherwise.\n function getOrder(line, direction) {\n var order = line.order;\n if (order == null) { order = line.order = bidiOrdering(line.text, direction); }\n return order\n }\n\n // EVENT HANDLING\n\n // Lightweight event framework. on/off also work on DOM nodes,\n // registering native DOM handlers.\n\n var noHandlers = [];\n\n var on = function(emitter, type, f) {\n if (emitter.addEventListener) {\n emitter.addEventListener(type, f, false);\n } else if (emitter.attachEvent) {\n emitter.attachEvent(\"on\" + type, f);\n } else {\n var map = emitter._handlers || (emitter._handlers = {});\n map[type] = (map[type] || noHandlers).concat(f);\n }\n };\n\n function getHandlers(emitter, type) {\n return emitter._handlers && emitter._handlers[type] || noHandlers\n }\n\n function off(emitter, type, f) {\n if (emitter.removeEventListener) {\n emitter.removeEventListener(type, f, false);\n } else if (emitter.detachEvent) {\n emitter.detachEvent(\"on\" + type, f);\n } else {\n var map = emitter._handlers, arr = map && map[type];\n if (arr) {\n var index = indexOf(arr, f);\n if (index > -1)\n { map[type] = arr.slice(0, index).concat(arr.slice(index + 1)); }\n }\n }\n }\n\n function signal(emitter, type /*, values...*/) {\n var handlers = getHandlers(emitter, type);\n if (!handlers.length) { return }\n var args = Array.prototype.slice.call(arguments, 2);\n for (var i = 0; i < handlers.length; ++i) { handlers[i].apply(null, args); }\n }\n\n // The DOM events that CodeMirror handles can be overridden by\n // registering a (non-DOM) handler on the editor for the event name,\n // and preventDefault-ing the event in that handler.\n function signalDOMEvent(cm, e, override) {\n if (typeof e == \"string\")\n { e = {type: e, preventDefault: function() { this.defaultPrevented = true; }}; }\n signal(cm, override || e.type, cm, e);\n return e_defaultPrevented(e) || e.codemirrorIgnore\n }\n\n function signalCursorActivity(cm) {\n var arr = cm._handlers && cm._handlers.cursorActivity;\n if (!arr) { return }\n var set = cm.curOp.cursorActivityHandlers || (cm.curOp.cursorActivityHandlers = []);\n for (var i = 0; i < arr.length; ++i) { if (indexOf(set, arr[i]) == -1)\n { set.push(arr[i]); } }\n }\n\n function hasHandler(emitter, type) {\n return getHandlers(emitter, type).length > 0\n }\n\n // Add on and off methods to a constructor's prototype, to make\n // registering events on such objects more convenient.\n function eventMixin(ctor) {\n ctor.prototype.on = function(type, f) {on(this, type, f);};\n ctor.prototype.off = function(type, f) {off(this, type, f);};\n }\n\n // Due to the fact that we still support jurassic IE versions, some\n // compatibility wrappers are needed.\n\n function e_preventDefault(e) {\n if (e.preventDefault) { e.preventDefault(); }\n else { e.returnValue = false; }\n }\n function e_stopPropagation(e) {\n if (e.stopPropagation) { e.stopPropagation(); }\n else { e.cancelBubble = true; }\n }\n function e_defaultPrevented(e) {\n return e.defaultPrevented != null ? e.defaultPrevented : e.returnValue == false\n }\n function e_stop(e) {e_preventDefault(e); e_stopPropagation(e);}\n\n function e_target(e) {return e.target || e.srcElement}\n function e_button(e) {\n var b = e.which;\n if (b == null) {\n if (e.button & 1) { b = 1; }\n else if (e.button & 2) { b = 3; }\n else if (e.button & 4) { b = 2; }\n }\n if (mac && e.ctrlKey && b == 1) { b = 3; }\n return b\n }\n\n // Detect drag-and-drop\n var dragAndDrop = function() {\n // There is *some* kind of drag-and-drop support in IE6-8, but I\n // couldn't get it to work yet.\n if (ie && ie_version < 9) { return false }\n var div = elt('div');\n return \"draggable\" in div || \"dragDrop\" in div\n }();\n\n var zwspSupported;\n function zeroWidthElement(measure) {\n if (zwspSupported == null) {\n var test = elt(\"span\", \"\\u200b\");\n removeChildrenAndAdd(measure, elt(\"span\", [test, document.createTextNode(\"x\")]));\n if (measure.firstChild.offsetHeight != 0)\n { zwspSupported = test.offsetWidth <= 1 && test.offsetHeight > 2 && !(ie && ie_version < 8); }\n }\n var node = zwspSupported ? elt(\"span\", \"\\u200b\") :\n elt(\"span\", \"\\u00a0\", null, \"display: inline-block; width: 1px; margin-right: -1px\");\n node.setAttribute(\"cm-text\", \"\");\n return node\n }\n\n // Feature-detect IE's crummy client rect reporting for bidi text\n var badBidiRects;\n function hasBadBidiRects(measure) {\n if (badBidiRects != null) { return badBidiRects }\n var txt = removeChildrenAndAdd(measure, document.createTextNode(\"A\\u062eA\"));\n var r0 = range(txt, 0, 1).getBoundingClientRect();\n var r1 = range(txt, 1, 2).getBoundingClientRect();\n removeChildren(measure);\n if (!r0 || r0.left == r0.right) { return false } // Safari returns null in some cases (#2780)\n return badBidiRects = (r1.right - r0.right < 3)\n }\n\n // See if \"\".split is the broken IE version, if so, provide an\n // alternative way to split lines.\n var splitLinesAuto = \"\\n\\nb\".split(/\\n/).length != 3 ? function (string) {\n var pos = 0, result = [], l = string.length;\n while (pos <= l) {\n var nl = string.indexOf(\"\\n\", pos);\n if (nl == -1) { nl = string.length; }\n var line = string.slice(pos, string.charAt(nl - 1) == \"\\r\" ? nl - 1 : nl);\n var rt = line.indexOf(\"\\r\");\n if (rt != -1) {\n result.push(line.slice(0, rt));\n pos += rt + 1;\n } else {\n result.push(line);\n pos = nl + 1;\n }\n }\n return result\n } : function (string) { return string.split(/\\r\\n?|\\n/); };\n\n var hasSelection = window.getSelection ? function (te) {\n try { return te.selectionStart != te.selectionEnd }\n catch(e) { return false }\n } : function (te) {\n var range;\n try {range = te.ownerDocument.selection.createRange();}\n catch(e) {}\n if (!range || range.parentElement() != te) { return false }\n return range.compareEndPoints(\"StartToEnd\", range) != 0\n };\n\n var hasCopyEvent = (function () {\n var e = elt(\"div\");\n if (\"oncopy\" in e) { return true }\n e.setAttribute(\"oncopy\", \"return;\");\n return typeof e.oncopy == \"function\"\n })();\n\n var badZoomedRects = null;\n function hasBadZoomedRects(measure) {\n if (badZoomedRects != null) { return badZoomedRects }\n var node = removeChildrenAndAdd(measure, elt(\"span\", \"x\"));\n var normal = node.getBoundingClientRect();\n var fromRange = range(node, 0, 1).getBoundingClientRect();\n return badZoomedRects = Math.abs(normal.left - fromRange.left) > 1\n }\n\n // Known modes, by name and by MIME\n var modes = {}, mimeModes = {};\n\n // Extra arguments are stored as the mode's dependencies, which is\n // used by (legacy) mechanisms like loadmode.js to automatically\n // load a mode. (Preferred mechanism is the require/define calls.)\n function defineMode(name, mode) {\n if (arguments.length > 2)\n { mode.dependencies = Array.prototype.slice.call(arguments, 2); }\n modes[name] = mode;\n }\n\n function defineMIME(mime, spec) {\n mimeModes[mime] = spec;\n }\n\n // Given a MIME type, a {name, ...options} config object, or a name\n // string, return a mode config object.\n function resolveMode(spec) {\n if (typeof spec == \"string\" && mimeModes.hasOwnProperty(spec)) {\n spec = mimeModes[spec];\n } else if (spec && typeof spec.name == \"string\" && mimeModes.hasOwnProperty(spec.name)) {\n var found = mimeModes[spec.name];\n if (typeof found == \"string\") { found = {name: found}; }\n spec = createObj(found, spec);\n spec.name = found.name;\n } else if (typeof spec == \"string\" && /^[\\w\\-]+\\/[\\w\\-]+\\+xml$/.test(spec)) {\n return resolveMode(\"application/xml\")\n } else if (typeof spec == \"string\" && /^[\\w\\-]+\\/[\\w\\-]+\\+json$/.test(spec)) {\n return resolveMode(\"application/json\")\n }\n if (typeof spec == \"string\") { return {name: spec} }\n else { return spec || {name: \"null\"} }\n }\n\n // Given a mode spec (anything that resolveMode accepts), find and\n // initialize an actual mode object.\n function getMode(options, spec) {\n spec = resolveMode(spec);\n var mfactory = modes[spec.name];\n if (!mfactory) { return getMode(options, \"text/plain\") }\n var modeObj = mfactory(options, spec);\n if (modeExtensions.hasOwnProperty(spec.name)) {\n var exts = modeExtensions[spec.name];\n for (var prop in exts) {\n if (!exts.hasOwnProperty(prop)) { continue }\n if (modeObj.hasOwnProperty(prop)) { modeObj[\"_\" + prop] = modeObj[prop]; }\n modeObj[prop] = exts[prop];\n }\n }\n modeObj.name = spec.name;\n if (spec.helperType) { modeObj.helperType = spec.helperType; }\n if (spec.modeProps) { for (var prop$1 in spec.modeProps)\n { modeObj[prop$1] = spec.modeProps[prop$1]; } }\n\n return modeObj\n }\n\n // This can be used to attach properties to mode objects from\n // outside the actual mode definition.\n var modeExtensions = {};\n function extendMode(mode, properties) {\n var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {});\n copyObj(properties, exts);\n }\n\n function copyState(mode, state) {\n if (state === true) { return state }\n if (mode.copyState) { return mode.copyState(state) }\n var nstate = {};\n for (var n in state) {\n var val = state[n];\n if (val instanceof Array) { val = val.concat([]); }\n nstate[n] = val;\n }\n return nstate\n }\n\n // Given a mode and a state (for that mode), find the inner mode and\n // state at the position that the state refers to.\n function innerMode(mode, state) {\n var info;\n while (mode.innerMode) {\n info = mode.innerMode(state);\n if (!info || info.mode == mode) { break }\n state = info.state;\n mode = info.mode;\n }\n return info || {mode: mode, state: state}\n }\n\n function startState(mode, a1, a2) {\n return mode.startState ? mode.startState(a1, a2) : true\n }\n\n // STRING STREAM\n\n // Fed to the mode parsers, provides helper functions to make\n // parsers more succinct.\n\n var StringStream = function(string, tabSize, lineOracle) {\n this.pos = this.start = 0;\n this.string = string;\n this.tabSize = tabSize || 8;\n this.lastColumnPos = this.lastColumnValue = 0;\n this.lineStart = 0;\n this.lineOracle = lineOracle;\n };\n\n StringStream.prototype.eol = function () {return this.pos >= this.string.length};\n StringStream.prototype.sol = function () {return this.pos == this.lineStart};\n StringStream.prototype.peek = function () {return this.string.charAt(this.pos) || undefined};\n StringStream.prototype.next = function () {\n if (this.pos < this.string.length)\n { return this.string.charAt(this.pos++) }\n };\n StringStream.prototype.eat = function (match) {\n var ch = this.string.charAt(this.pos);\n var ok;\n if (typeof match == \"string\") { ok = ch == match; }\n else { ok = ch && (match.test ? match.test(ch) : match(ch)); }\n if (ok) {++this.pos; return ch}\n };\n StringStream.prototype.eatWhile = function (match) {\n var start = this.pos;\n while (this.eat(match)){}\n return this.pos > start\n };\n StringStream.prototype.eatSpace = function () {\n var start = this.pos;\n while (/[\\s\\u00a0]/.test(this.string.charAt(this.pos))) { ++this.pos; }\n return this.pos > start\n };\n StringStream.prototype.skipToEnd = function () {this.pos = this.string.length;};\n StringStream.prototype.skipTo = function (ch) {\n var found = this.string.indexOf(ch, this.pos);\n if (found > -1) {this.pos = found; return true}\n };\n StringStream.prototype.backUp = function (n) {this.pos -= n;};\n StringStream.prototype.column = function () {\n if (this.lastColumnPos < this.start) {\n this.lastColumnValue = countColumn(this.string, this.start, this.tabSize, this.lastColumnPos, this.lastColumnValue);\n this.lastColumnPos = this.start;\n }\n return this.lastColumnValue - (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0)\n };\n StringStream.prototype.indentation = function () {\n return countColumn(this.string, null, this.tabSize) -\n (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0)\n };\n StringStream.prototype.match = function (pattern, consume, caseInsensitive) {\n if (typeof pattern == \"string\") {\n var cased = function (str) { return caseInsensitive ? str.toLowerCase() : str; };\n var substr = this.string.substr(this.pos, pattern.length);\n if (cased(substr) == cased(pattern)) {\n if (consume !== false) { this.pos += pattern.length; }\n return true\n }\n } else {\n var match = this.string.slice(this.pos).match(pattern);\n if (match && match.index > 0) { return null }\n if (match && consume !== false) { this.pos += match[0].length; }\n return match\n }\n };\n StringStream.prototype.current = function (){return this.string.slice(this.start, this.pos)};\n StringStream.prototype.hideFirstChars = function (n, inner) {\n this.lineStart += n;\n try { return inner() }\n finally { this.lineStart -= n; }\n };\n StringStream.prototype.lookAhead = function (n) {\n var oracle = this.lineOracle;\n return oracle && oracle.lookAhead(n)\n };\n StringStream.prototype.baseToken = function () {\n var oracle = this.lineOracle;\n return oracle && oracle.baseToken(this.pos)\n };\n\n // Find the line object corresponding to the given line number.\n function getLine(doc, n) {\n n -= doc.first;\n if (n < 0 || n >= doc.size) { throw new Error(\"There is no line \" + (n + doc.first) + \" in the document.\") }\n var chunk = doc;\n while (!chunk.lines) {\n for (var i = 0;; ++i) {\n var child = chunk.children[i], sz = child.chunkSize();\n if (n < sz) { chunk = child; break }\n n -= sz;\n }\n }\n return chunk.lines[n]\n }\n\n // Get the part of a document between two positions, as an array of\n // strings.\n function getBetween(doc, start, end) {\n var out = [], n = start.line;\n doc.iter(start.line, end.line + 1, function (line) {\n var text = line.text;\n if (n == end.line) { text = text.slice(0, end.ch); }\n if (n == start.line) { text = text.slice(start.ch); }\n out.push(text);\n ++n;\n });\n return out\n }\n // Get the lines between from and to, as array of strings.\n function getLines(doc, from, to) {\n var out = [];\n doc.iter(from, to, function (line) { out.push(line.text); }); // iter aborts when callback returns truthy value\n return out\n }\n\n // Update the height of a line, propagating the height change\n // upwards to parent nodes.\n function updateLineHeight(line, height) {\n var diff = height - line.height;\n if (diff) { for (var n = line; n; n = n.parent) { n.height += diff; } }\n }\n\n // Given a line object, find its line number by walking up through\n // its parent links.\n function lineNo(line) {\n if (line.parent == null) { return null }\n var cur = line.parent, no = indexOf(cur.lines, line);\n for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) {\n for (var i = 0;; ++i) {\n if (chunk.children[i] == cur) { break }\n no += chunk.children[i].chunkSize();\n }\n }\n return no + cur.first\n }\n\n // Find the line at the given vertical position, using the height\n // information in the document tree.\n function lineAtHeight(chunk, h) {\n var n = chunk.first;\n outer: do {\n for (var i$1 = 0; i$1 < chunk.children.length; ++i$1) {\n var child = chunk.children[i$1], ch = child.height;\n if (h < ch) { chunk = child; continue outer }\n h -= ch;\n n += child.chunkSize();\n }\n return n\n } while (!chunk.lines)\n var i = 0;\n for (; i < chunk.lines.length; ++i) {\n var line = chunk.lines[i], lh = line.height;\n if (h < lh) { break }\n h -= lh;\n }\n return n + i\n }\n\n function isLine(doc, l) {return l >= doc.first && l < doc.first + doc.size}\n\n function lineNumberFor(options, i) {\n return String(options.lineNumberFormatter(i + options.firstLineNumber))\n }\n\n // A Pos instance represents a position within the text.\n function Pos(line, ch, sticky) {\n if ( sticky === void 0 ) sticky = null;\n\n if (!(this instanceof Pos)) { return new Pos(line, ch, sticky) }\n this.line = line;\n this.ch = ch;\n this.sticky = sticky;\n }\n\n // Compare two positions, return 0 if they are the same, a negative\n // number when a is less, and a positive number otherwise.\n function cmp(a, b) { return a.line - b.line || a.ch - b.ch }\n\n function equalCursorPos(a, b) { return a.sticky == b.sticky && cmp(a, b) == 0 }\n\n function copyPos(x) {return Pos(x.line, x.ch)}\n function maxPos(a, b) { return cmp(a, b) < 0 ? b : a }\n function minPos(a, b) { return cmp(a, b) < 0 ? a : b }\n\n // Most of the external API clips given positions to make sure they\n // actually exist within the document.\n function clipLine(doc, n) {return Math.max(doc.first, Math.min(n, doc.first + doc.size - 1))}\n function clipPos(doc, pos) {\n if (pos.line < doc.first) { return Pos(doc.first, 0) }\n var last = doc.first + doc.size - 1;\n if (pos.line > last) { return Pos(last, getLine(doc, last).text.length) }\n return clipToLen(pos, getLine(doc, pos.line).text.length)\n }\n function clipToLen(pos, linelen) {\n var ch = pos.ch;\n if (ch == null || ch > linelen) { return Pos(pos.line, linelen) }\n else if (ch < 0) { return Pos(pos.line, 0) }\n else { return pos }\n }\n function clipPosArray(doc, array) {\n var out = [];\n for (var i = 0; i < array.length; i++) { out[i] = clipPos(doc, array[i]); }\n return out\n }\n\n var SavedContext = function(state, lookAhead) {\n this.state = state;\n this.lookAhead = lookAhead;\n };\n\n var Context = function(doc, state, line, lookAhead) {\n this.state = state;\n this.doc = doc;\n this.line = line;\n this.maxLookAhead = lookAhead || 0;\n this.baseTokens = null;\n this.baseTokenPos = 1;\n };\n\n Context.prototype.lookAhead = function (n) {\n var line = this.doc.getLine(this.line + n);\n if (line != null && n > this.maxLookAhead) { this.maxLookAhead = n; }\n return line\n };\n\n Context.prototype.baseToken = function (n) {\n if (!this.baseTokens) { return null }\n while (this.baseTokens[this.baseTokenPos] <= n)\n { this.baseTokenPos += 2; }\n var type = this.baseTokens[this.baseTokenPos + 1];\n return {type: type && type.replace(/( |^)overlay .*/, \"\"),\n size: this.baseTokens[this.baseTokenPos] - n}\n };\n\n Context.prototype.nextLine = function () {\n this.line++;\n if (this.maxLookAhead > 0) { this.maxLookAhead--; }\n };\n\n Context.fromSaved = function (doc, saved, line) {\n if (saved instanceof SavedContext)\n { return new Context(doc, copyState(doc.mode, saved.state), line, saved.lookAhead) }\n else\n { return new Context(doc, copyState(doc.mode, saved), line) }\n };\n\n Context.prototype.save = function (copy) {\n var state = copy !== false ? copyState(this.doc.mode, this.state) : this.state;\n return this.maxLookAhead > 0 ? new SavedContext(state, this.maxLookAhead) : state\n };\n\n\n // Compute a style array (an array starting with a mode generation\n // -- for invalidation -- followed by pairs of end positions and\n // style strings), which is used to highlight the tokens on the\n // line.\n function highlightLine(cm, line, context, forceToEnd) {\n // A styles array always starts with a number identifying the\n // mode/overlays that it is based on (for easy invalidation).\n var st = [cm.state.modeGen], lineClasses = {};\n // Compute the base array of styles\n runMode(cm, line.text, cm.doc.mode, context, function (end, style) { return st.push(end, style); },\n lineClasses, forceToEnd);\n var state = context.state;\n\n // Run overlays, adjust style array.\n var loop = function ( o ) {\n context.baseTokens = st;\n var overlay = cm.state.overlays[o], i = 1, at = 0;\n context.state = true;\n runMode(cm, line.text, overlay.mode, context, function (end, style) {\n var start = i;\n // Ensure there's a token end at the current position, and that i points at it\n while (at < end) {\n var i_end = st[i];\n if (i_end > end)\n { st.splice(i, 1, end, st[i+1], i_end); }\n i += 2;\n at = Math.min(end, i_end);\n }\n if (!style) { return }\n if (overlay.opaque) {\n st.splice(start, i - start, end, \"overlay \" + style);\n i = start + 2;\n } else {\n for (; start < i; start += 2) {\n var cur = st[start+1];\n st[start+1] = (cur ? cur + \" \" : \"\") + \"overlay \" + style;\n }\n }\n }, lineClasses);\n context.state = state;\n context.baseTokens = null;\n context.baseTokenPos = 1;\n };\n\n for (var o = 0; o < cm.state.overlays.length; ++o) loop( o );\n\n return {styles: st, classes: lineClasses.bgClass || lineClasses.textClass ? lineClasses : null}\n }\n\n function getLineStyles(cm, line, updateFrontier) {\n if (!line.styles || line.styles[0] != cm.state.modeGen) {\n var context = getContextBefore(cm, lineNo(line));\n var resetState = line.text.length > cm.options.maxHighlightLength && copyState(cm.doc.mode, context.state);\n var result = highlightLine(cm, line, context);\n if (resetState) { context.state = resetState; }\n line.stateAfter = context.save(!resetState);\n line.styles = result.styles;\n if (result.classes) { line.styleClasses = result.classes; }\n else if (line.styleClasses) { line.styleClasses = null; }\n if (updateFrontier === cm.doc.highlightFrontier)\n { cm.doc.modeFrontier = Math.max(cm.doc.modeFrontier, ++cm.doc.highlightFrontier); }\n }\n return line.styles\n }\n\n function getContextBefore(cm, n, precise) {\n var doc = cm.doc, display = cm.display;\n if (!doc.mode.startState) { return new Context(doc, true, n) }\n var start = findStartLine(cm, n, precise);\n var saved = start > doc.first && getLine(doc, start - 1).stateAfter;\n var context = saved ? Context.fromSaved(doc, saved, start) : new Context(doc, startState(doc.mode), start);\n\n doc.iter(start, n, function (line) {\n processLine(cm, line.text, context);\n var pos = context.line;\n line.stateAfter = pos == n - 1 || pos % 5 == 0 || pos >= display.viewFrom && pos < display.viewTo ? context.save() : null;\n context.nextLine();\n });\n if (precise) { doc.modeFrontier = context.line; }\n return context\n }\n\n // Lightweight form of highlight -- proceed over this line and\n // update state, but don't save a style array. Used for lines that\n // aren't currently visible.\n function processLine(cm, text, context, startAt) {\n var mode = cm.doc.mode;\n var stream = new StringStream(text, cm.options.tabSize, context);\n stream.start = stream.pos = startAt || 0;\n if (text == \"\") { callBlankLine(mode, context.state); }\n while (!stream.eol()) {\n readToken(mode, stream, context.state);\n stream.start = stream.pos;\n }\n }\n\n function callBlankLine(mode, state) {\n if (mode.blankLine) { return mode.blankLine(state) }\n if (!mode.innerMode) { return }\n var inner = innerMode(mode, state);\n if (inner.mode.blankLine) { return inner.mode.blankLine(inner.state) }\n }\n\n function readToken(mode, stream, state, inner) {\n for (var i = 0; i < 10; i++) {\n if (inner) { inner[0] = innerMode(mode, state).mode; }\n var style = mode.token(stream, state);\n if (stream.pos > stream.start) { return style }\n }\n throw new Error(\"Mode \" + mode.name + \" failed to advance stream.\")\n }\n\n var Token = function(stream, type, state) {\n this.start = stream.start; this.end = stream.pos;\n this.string = stream.current();\n this.type = type || null;\n this.state = state;\n };\n\n // Utility for getTokenAt and getLineTokens\n function takeToken(cm, pos, precise, asArray) {\n var doc = cm.doc, mode = doc.mode, style;\n pos = clipPos(doc, pos);\n var line = getLine(doc, pos.line), context = getContextBefore(cm, pos.line, precise);\n var stream = new StringStream(line.text, cm.options.tabSize, context), tokens;\n if (asArray) { tokens = []; }\n while ((asArray || stream.pos < pos.ch) && !stream.eol()) {\n stream.start = stream.pos;\n style = readToken(mode, stream, context.state);\n if (asArray) { tokens.push(new Token(stream, style, copyState(doc.mode, context.state))); }\n }\n return asArray ? tokens : new Token(stream, style, context.state)\n }\n\n function extractLineClasses(type, output) {\n if (type) { for (;;) {\n var lineClass = type.match(/(?:^|\\s+)line-(background-)?(\\S+)/);\n if (!lineClass) { break }\n type = type.slice(0, lineClass.index) + type.slice(lineClass.index + lineClass[0].length);\n var prop = lineClass[1] ? \"bgClass\" : \"textClass\";\n if (output[prop] == null)\n { output[prop] = lineClass[2]; }\n else if (!(new RegExp(\"(?:^|\\\\s)\" + lineClass[2] + \"(?:$|\\\\s)\")).test(output[prop]))\n { output[prop] += \" \" + lineClass[2]; }\n } }\n return type\n }\n\n // Run the given mode's parser over a line, calling f for each token.\n function runMode(cm, text, mode, context, f, lineClasses, forceToEnd) {\n var flattenSpans = mode.flattenSpans;\n if (flattenSpans == null) { flattenSpans = cm.options.flattenSpans; }\n var curStart = 0, curStyle = null;\n var stream = new StringStream(text, cm.options.tabSize, context), style;\n var inner = cm.options.addModeClass && [null];\n if (text == \"\") { extractLineClasses(callBlankLine(mode, context.state), lineClasses); }\n while (!stream.eol()) {\n if (stream.pos > cm.options.maxHighlightLength) {\n flattenSpans = false;\n if (forceToEnd) { processLine(cm, text, context, stream.pos); }\n stream.pos = text.length;\n style = null;\n } else {\n style = extractLineClasses(readToken(mode, stream, context.state, inner), lineClasses);\n }\n if (inner) {\n var mName = inner[0].name;\n if (mName) { style = \"m-\" + (style ? mName + \" \" + style : mName); }\n }\n if (!flattenSpans || curStyle != style) {\n while (curStart < stream.start) {\n curStart = Math.min(stream.start, curStart + 5000);\n f(curStart, curStyle);\n }\n curStyle = style;\n }\n stream.start = stream.pos;\n }\n while (curStart < stream.pos) {\n // Webkit seems to refuse to render text nodes longer than 57444\n // characters, and returns inaccurate measurements in nodes\n // starting around 5000 chars.\n var pos = Math.min(stream.pos, curStart + 5000);\n f(pos, curStyle);\n curStart = pos;\n }\n }\n\n // Finds the line to start with when starting a parse. Tries to\n // find a line with a stateAfter, so that it can start with a\n // valid state. If that fails, it returns the line with the\n // smallest indentation, which tends to need the least context to\n // parse correctly.\n function findStartLine(cm, n, precise) {\n var minindent, minline, doc = cm.doc;\n var lim = precise ? -1 : n - (cm.doc.mode.innerMode ? 1000 : 100);\n for (var search = n; search > lim; --search) {\n if (search <= doc.first) { return doc.first }\n var line = getLine(doc, search - 1), after = line.stateAfter;\n if (after && (!precise || search + (after instanceof SavedContext ? after.lookAhead : 0) <= doc.modeFrontier))\n { return search }\n var indented = countColumn(line.text, null, cm.options.tabSize);\n if (minline == null || minindent > indented) {\n minline = search - 1;\n minindent = indented;\n }\n }\n return minline\n }\n\n function retreatFrontier(doc, n) {\n doc.modeFrontier = Math.min(doc.modeFrontier, n);\n if (doc.highlightFrontier < n - 10) { return }\n var start = doc.first;\n for (var line = n - 1; line > start; line--) {\n var saved = getLine(doc, line).stateAfter;\n // change is on 3\n // state on line 1 looked ahead 2 -- so saw 3\n // test 1 + 2 < 3 should cover this\n if (saved && (!(saved instanceof SavedContext) || line + saved.lookAhead < n)) {\n start = line + 1;\n break\n }\n }\n doc.highlightFrontier = Math.min(doc.highlightFrontier, start);\n }\n\n // Optimize some code when these features are not used.\n var sawReadOnlySpans = false, sawCollapsedSpans = false;\n\n function seeReadOnlySpans() {\n sawReadOnlySpans = true;\n }\n\n function seeCollapsedSpans() {\n sawCollapsedSpans = true;\n }\n\n // TEXTMARKER SPANS\n\n function MarkedSpan(marker, from, to) {\n this.marker = marker;\n this.from = from; this.to = to;\n }\n\n // Search an array of spans for a span matching the given marker.\n function getMarkedSpanFor(spans, marker) {\n if (spans) { for (var i = 0; i < spans.length; ++i) {\n var span = spans[i];\n if (span.marker == marker) { return span }\n } }\n }\n\n // Remove a span from an array, returning undefined if no spans are\n // left (we don't store arrays for lines without spans).\n function removeMarkedSpan(spans, span) {\n var r;\n for (var i = 0; i < spans.length; ++i)\n { if (spans[i] != span) { (r || (r = [])).push(spans[i]); } }\n return r\n }\n\n // Add a span to a line.\n function addMarkedSpan(line, span, op) {\n var inThisOp = op && window.WeakSet && (op.markedSpans || (op.markedSpans = new WeakSet));\n if (inThisOp && line.markedSpans && inThisOp.has(line.markedSpans)) {\n line.markedSpans.push(span);\n } else {\n line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span];\n if (inThisOp) { inThisOp.add(line.markedSpans); }\n }\n span.marker.attachLine(line);\n }\n\n // Used for the algorithm that adjusts markers for a change in the\n // document. These functions cut an array of spans at a given\n // character position, returning an array of remaining chunks (or\n // undefined if nothing remains).\n function markedSpansBefore(old, startCh, isInsert) {\n var nw;\n if (old) { for (var i = 0; i < old.length; ++i) {\n var span = old[i], marker = span.marker;\n var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh);\n if (startsBefore || span.from == startCh && marker.type == \"bookmark\" && (!isInsert || !span.marker.insertLeft)) {\n var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh)\n ;(nw || (nw = [])).push(new MarkedSpan(marker, span.from, endsAfter ? null : span.to));\n }\n } }\n return nw\n }\n function markedSpansAfter(old, endCh, isInsert) {\n var nw;\n if (old) { for (var i = 0; i < old.length; ++i) {\n var span = old[i], marker = span.marker;\n var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= endCh : span.to > endCh);\n if (endsAfter || span.from == endCh && marker.type == \"bookmark\" && (!isInsert || span.marker.insertLeft)) {\n var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh)\n ;(nw || (nw = [])).push(new MarkedSpan(marker, startsBefore ? null : span.from - endCh,\n span.to == null ? null : span.to - endCh));\n }\n } }\n return nw\n }\n\n // Given a change object, compute the new set of marker spans that\n // cover the line in which the change took place. Removes spans\n // entirely within the change, reconnects spans belonging to the\n // same marker that appear on both sides of the change, and cuts off\n // spans partially within the change. Returns an array of span\n // arrays with one element for each line in (after) the change.\n function stretchSpansOverChange(doc, change) {\n if (change.full) { return null }\n var oldFirst = isLine(doc, change.from.line) && getLine(doc, change.from.line).markedSpans;\n var oldLast = isLine(doc, change.to.line) && getLine(doc, change.to.line).markedSpans;\n if (!oldFirst && !oldLast) { return null }\n\n var startCh = change.from.ch, endCh = change.to.ch, isInsert = cmp(change.from, change.to) == 0;\n // Get the spans that 'stick out' on both sides\n var first = markedSpansBefore(oldFirst, startCh, isInsert);\n var last = markedSpansAfter(oldLast, endCh, isInsert);\n\n // Next, merge those two ends\n var sameLine = change.text.length == 1, offset = lst(change.text).length + (sameLine ? startCh : 0);\n if (first) {\n // Fix up .to properties of first\n for (var i = 0; i < first.length; ++i) {\n var span = first[i];\n if (span.to == null) {\n var found = getMarkedSpanFor(last, span.marker);\n if (!found) { span.to = startCh; }\n else if (sameLine) { span.to = found.to == null ? null : found.to + offset; }\n }\n }\n }\n if (last) {\n // Fix up .from in last (or move them into first in case of sameLine)\n for (var i$1 = 0; i$1 < last.length; ++i$1) {\n var span$1 = last[i$1];\n if (span$1.to != null) { span$1.to += offset; }\n if (span$1.from == null) {\n var found$1 = getMarkedSpanFor(first, span$1.marker);\n if (!found$1) {\n span$1.from = offset;\n if (sameLine) { (first || (first = [])).push(span$1); }\n }\n } else {\n span$1.from += offset;\n if (sameLine) { (first || (first = [])).push(span$1); }\n }\n }\n }\n // Make sure we didn't create any zero-length spans\n if (first) { first = clearEmptySpans(first); }\n if (last && last != first) { last = clearEmptySpans(last); }\n\n var newMarkers = [first];\n if (!sameLine) {\n // Fill gap with whole-line-spans\n var gap = change.text.length - 2, gapMarkers;\n if (gap > 0 && first)\n { for (var i$2 = 0; i$2 < first.length; ++i$2)\n { if (first[i$2].to == null)\n { (gapMarkers || (gapMarkers = [])).push(new MarkedSpan(first[i$2].marker, null, null)); } } }\n for (var i$3 = 0; i$3 < gap; ++i$3)\n { newMarkers.push(gapMarkers); }\n newMarkers.push(last);\n }\n return newMarkers\n }\n\n // Remove spans that are empty and don't have a clearWhenEmpty\n // option of false.\n function clearEmptySpans(spans) {\n for (var i = 0; i < spans.length; ++i) {\n var span = spans[i];\n if (span.from != null && span.from == span.to && span.marker.clearWhenEmpty !== false)\n { spans.splice(i--, 1); }\n }\n if (!spans.length) { return null }\n return spans\n }\n\n // Used to 'clip' out readOnly ranges when making a change.\n function removeReadOnlyRanges(doc, from, to) {\n var markers = null;\n doc.iter(from.line, to.line + 1, function (line) {\n if (line.markedSpans) { for (var i = 0; i < line.markedSpans.length; ++i) {\n var mark = line.markedSpans[i].marker;\n if (mark.readOnly && (!markers || indexOf(markers, mark) == -1))\n { (markers || (markers = [])).push(mark); }\n } }\n });\n if (!markers) { return null }\n var parts = [{from: from, to: to}];\n for (var i = 0; i < markers.length; ++i) {\n var mk = markers[i], m = mk.find(0);\n for (var j = 0; j < parts.length; ++j) {\n var p = parts[j];\n if (cmp(p.to, m.from) < 0 || cmp(p.from, m.to) > 0) { continue }\n var newParts = [j, 1], dfrom = cmp(p.from, m.from), dto = cmp(p.to, m.to);\n if (dfrom < 0 || !mk.inclusiveLeft && !dfrom)\n { newParts.push({from: p.from, to: m.from}); }\n if (dto > 0 || !mk.inclusiveRight && !dto)\n { newParts.push({from: m.to, to: p.to}); }\n parts.splice.apply(parts, newParts);\n j += newParts.length - 3;\n }\n }\n return parts\n }\n\n // Connect or disconnect spans from a line.\n function detachMarkedSpans(line) {\n var spans = line.markedSpans;\n if (!spans) { return }\n for (var i = 0; i < spans.length; ++i)\n { spans[i].marker.detachLine(line); }\n line.markedSpans = null;\n }\n function attachMarkedSpans(line, spans) {\n if (!spans) { return }\n for (var i = 0; i < spans.length; ++i)\n { spans[i].marker.attachLine(line); }\n line.markedSpans = spans;\n }\n\n // Helpers used when computing which overlapping collapsed span\n // counts as the larger one.\n function extraLeft(marker) { return marker.inclusiveLeft ? -1 : 0 }\n function extraRight(marker) { return marker.inclusiveRight ? 1 : 0 }\n\n // Returns a number indicating which of two overlapping collapsed\n // spans is larger (and thus includes the other). Falls back to\n // comparing ids when the spans cover exactly the same range.\n function compareCollapsedMarkers(a, b) {\n var lenDiff = a.lines.length - b.lines.length;\n if (lenDiff != 0) { return lenDiff }\n var aPos = a.find(), bPos = b.find();\n var fromCmp = cmp(aPos.from, bPos.from) || extraLeft(a) - extraLeft(b);\n if (fromCmp) { return -fromCmp }\n var toCmp = cmp(aPos.to, bPos.to) || extraRight(a) - extraRight(b);\n if (toCmp) { return toCmp }\n return b.id - a.id\n }\n\n // Find out whether a line ends or starts in a collapsed span. If\n // so, return the marker for that span.\n function collapsedSpanAtSide(line, start) {\n var sps = sawCollapsedSpans && line.markedSpans, found;\n if (sps) { for (var sp = (void 0), i = 0; i < sps.length; ++i) {\n sp = sps[i];\n if (sp.marker.collapsed && (start ? sp.from : sp.to) == null &&\n (!found || compareCollapsedMarkers(found, sp.marker) < 0))\n { found = sp.marker; }\n } }\n return found\n }\n function collapsedSpanAtStart(line) { return collapsedSpanAtSide(line, true) }\n function collapsedSpanAtEnd(line) { return collapsedSpanAtSide(line, false) }\n\n function collapsedSpanAround(line, ch) {\n var sps = sawCollapsedSpans && line.markedSpans, found;\n if (sps) { for (var i = 0; i < sps.length; ++i) {\n var sp = sps[i];\n if (sp.marker.collapsed && (sp.from == null || sp.from < ch) && (sp.to == null || sp.to > ch) &&\n (!found || compareCollapsedMarkers(found, sp.marker) < 0)) { found = sp.marker; }\n } }\n return found\n }\n\n // Test whether there exists a collapsed span that partially\n // overlaps (covers the start or end, but not both) of a new span.\n // Such overlap is not allowed.\n function conflictingCollapsedRange(doc, lineNo, from, to, marker) {\n var line = getLine(doc, lineNo);\n var sps = sawCollapsedSpans && line.markedSpans;\n if (sps) { for (var i = 0; i < sps.length; ++i) {\n var sp = sps[i];\n if (!sp.marker.collapsed) { continue }\n var found = sp.marker.find(0);\n var fromCmp = cmp(found.from, from) || extraLeft(sp.marker) - extraLeft(marker);\n var toCmp = cmp(found.to, to) || extraRight(sp.marker) - extraRight(marker);\n if (fromCmp >= 0 && toCmp <= 0 || fromCmp <= 0 && toCmp >= 0) { continue }\n if (fromCmp <= 0 && (sp.marker.inclusiveRight && marker.inclusiveLeft ? cmp(found.to, from) >= 0 : cmp(found.to, from) > 0) ||\n fromCmp >= 0 && (sp.marker.inclusiveRight && marker.inclusiveLeft ? cmp(found.from, to) <= 0 : cmp(found.from, to) < 0))\n { return true }\n } }\n }\n\n // A visual line is a line as drawn on the screen. Folding, for\n // example, can cause multiple logical lines to appear on the same\n // visual line. This finds the start of the visual line that the\n // given line is part of (usually that is the line itself).\n function visualLine(line) {\n var merged;\n while (merged = collapsedSpanAtStart(line))\n { line = merged.find(-1, true).line; }\n return line\n }\n\n function visualLineEnd(line) {\n var merged;\n while (merged = collapsedSpanAtEnd(line))\n { line = merged.find(1, true).line; }\n return line\n }\n\n // Returns an array of logical lines that continue the visual line\n // started by the argument, or undefined if there are no such lines.\n function visualLineContinued(line) {\n var merged, lines;\n while (merged = collapsedSpanAtEnd(line)) {\n line = merged.find(1, true).line\n ;(lines || (lines = [])).push(line);\n }\n return lines\n }\n\n // Get the line number of the start of the visual line that the\n // given line number is part of.\n function visualLineNo(doc, lineN) {\n var line = getLine(doc, lineN), vis = visualLine(line);\n if (line == vis) { return lineN }\n return lineNo(vis)\n }\n\n // Get the line number of the start of the next visual line after\n // the given line.\n function visualLineEndNo(doc, lineN) {\n if (lineN > doc.lastLine()) { return lineN }\n var line = getLine(doc, lineN), merged;\n if (!lineIsHidden(doc, line)) { return lineN }\n while (merged = collapsedSpanAtEnd(line))\n { line = merged.find(1, true).line; }\n return lineNo(line) + 1\n }\n\n // Compute whether a line is hidden. Lines count as hidden when they\n // are part of a visual line that starts with another line, or when\n // they are entirely covered by collapsed, non-widget span.\n function lineIsHidden(doc, line) {\n var sps = sawCollapsedSpans && line.markedSpans;\n if (sps) { for (var sp = (void 0), i = 0; i < sps.length; ++i) {\n sp = sps[i];\n if (!sp.marker.collapsed) { continue }\n if (sp.from == null) { return true }\n if (sp.marker.widgetNode) { continue }\n if (sp.from == 0 && sp.marker.inclusiveLeft && lineIsHiddenInner(doc, line, sp))\n { return true }\n } }\n }\n function lineIsHiddenInner(doc, line, span) {\n if (span.to == null) {\n var end = span.marker.find(1, true);\n return lineIsHiddenInner(doc, end.line, getMarkedSpanFor(end.line.markedSpans, span.marker))\n }\n if (span.marker.inclusiveRight && span.to == line.text.length)\n { return true }\n for (var sp = (void 0), i = 0; i < line.markedSpans.length; ++i) {\n sp = line.markedSpans[i];\n if (sp.marker.collapsed && !sp.marker.widgetNode && sp.from == span.to &&\n (sp.to == null || sp.to != span.from) &&\n (sp.marker.inclusiveLeft || span.marker.inclusiveRight) &&\n lineIsHiddenInner(doc, line, sp)) { return true }\n }\n }\n\n // Find the height above the given line.\n function heightAtLine(lineObj) {\n lineObj = visualLine(lineObj);\n\n var h = 0, chunk = lineObj.parent;\n for (var i = 0; i < chunk.lines.length; ++i) {\n var line = chunk.lines[i];\n if (line == lineObj) { break }\n else { h += line.height; }\n }\n for (var p = chunk.parent; p; chunk = p, p = chunk.parent) {\n for (var i$1 = 0; i$1 < p.children.length; ++i$1) {\n var cur = p.children[i$1];\n if (cur == chunk) { break }\n else { h += cur.height; }\n }\n }\n return h\n }\n\n // Compute the character length of a line, taking into account\n // collapsed ranges (see markText) that might hide parts, and join\n // other lines onto it.\n function lineLength(line) {\n if (line.height == 0) { return 0 }\n var len = line.text.length, merged, cur = line;\n while (merged = collapsedSpanAtStart(cur)) {\n var found = merged.find(0, true);\n cur = found.from.line;\n len += found.from.ch - found.to.ch;\n }\n cur = line;\n while (merged = collapsedSpanAtEnd(cur)) {\n var found$1 = merged.find(0, true);\n len -= cur.text.length - found$1.from.ch;\n cur = found$1.to.line;\n len += cur.text.length - found$1.to.ch;\n }\n return len\n }\n\n // Find the longest line in the document.\n function findMaxLine(cm) {\n var d = cm.display, doc = cm.doc;\n d.maxLine = getLine(doc, doc.first);\n d.maxLineLength = lineLength(d.maxLine);\n d.maxLineChanged = true;\n doc.iter(function (line) {\n var len = lineLength(line);\n if (len > d.maxLineLength) {\n d.maxLineLength = len;\n d.maxLine = line;\n }\n });\n }\n\n // LINE DATA STRUCTURE\n\n // Line objects. These hold state related to a line, including\n // highlighting info (the styles array).\n var Line = function(text, markedSpans, estimateHeight) {\n this.text = text;\n attachMarkedSpans(this, markedSpans);\n this.height = estimateHeight ? estimateHeight(this) : 1;\n };\n\n Line.prototype.lineNo = function () { return lineNo(this) };\n eventMixin(Line);\n\n // Change the content (text, markers) of a line. Automatically\n // invalidates cached information and tries to re-estimate the\n // line's height.\n function updateLine(line, text, markedSpans, estimateHeight) {\n line.text = text;\n if (line.stateAfter) { line.stateAfter = null; }\n if (line.styles) { line.styles = null; }\n if (line.order != null) { line.order = null; }\n detachMarkedSpans(line);\n attachMarkedSpans(line, markedSpans);\n var estHeight = estimateHeight ? estimateHeight(line) : 1;\n if (estHeight != line.height) { updateLineHeight(line, estHeight); }\n }\n\n // Detach a line from the document tree and its markers.\n function cleanUpLine(line) {\n line.parent = null;\n detachMarkedSpans(line);\n }\n\n // Convert a style as returned by a mode (either null, or a string\n // containing one or more styles) to a CSS style. This is cached,\n // and also looks for line-wide styles.\n var styleToClassCache = {}, styleToClassCacheWithMode = {};\n function interpretTokenStyle(style, options) {\n if (!style || /^\\s*$/.test(style)) { return null }\n var cache = options.addModeClass ? styleToClassCacheWithMode : styleToClassCache;\n return cache[style] ||\n (cache[style] = style.replace(/\\S+/g, \"cm-$&\"))\n }\n\n // Render the DOM representation of the text of a line. Also builds\n // up a 'line map', which points at the DOM nodes that represent\n // specific stretches of text, and is used by the measuring code.\n // The returned object contains the DOM node, this map, and\n // information about line-wide styles that were set by the mode.\n function buildLineContent(cm, lineView) {\n // The padding-right forces the element to have a 'border', which\n // is needed on Webkit to be able to get line-level bounding\n // rectangles for it (in measureChar).\n var content = eltP(\"span\", null, null, webkit ? \"padding-right: .1px\" : null);\n var builder = {pre: eltP(\"pre\", [content], \"CodeMirror-line\"), content: content,\n col: 0, pos: 0, cm: cm,\n trailingSpace: false,\n splitSpaces: cm.getOption(\"lineWrapping\")};\n lineView.measure = {};\n\n // Iterate over the logical lines that make up this visual line.\n for (var i = 0; i <= (lineView.rest ? lineView.rest.length : 0); i++) {\n var line = i ? lineView.rest[i - 1] : lineView.line, order = (void 0);\n builder.pos = 0;\n builder.addToken = buildToken;\n // Optionally wire in some hacks into the token-rendering\n // algorithm, to deal with browser quirks.\n if (hasBadBidiRects(cm.display.measure) && (order = getOrder(line, cm.doc.direction)))\n { builder.addToken = buildTokenBadBidi(builder.addToken, order); }\n builder.map = [];\n var allowFrontierUpdate = lineView != cm.display.externalMeasured && lineNo(line);\n insertLineContent(line, builder, getLineStyles(cm, line, allowFrontierUpdate));\n if (line.styleClasses) {\n if (line.styleClasses.bgClass)\n { builder.bgClass = joinClasses(line.styleClasses.bgClass, builder.bgClass || \"\"); }\n if (line.styleClasses.textClass)\n { builder.textClass = joinClasses(line.styleClasses.textClass, builder.textClass || \"\"); }\n }\n\n // Ensure at least a single node is present, for measuring.\n if (builder.map.length == 0)\n { builder.map.push(0, 0, builder.content.appendChild(zeroWidthElement(cm.display.measure))); }\n\n // Store the map and a cache object for the current logical line\n if (i == 0) {\n lineView.measure.map = builder.map;\n lineView.measure.cache = {};\n } else {\n (lineView.measure.maps || (lineView.measure.maps = [])).push(builder.map)\n ;(lineView.measure.caches || (lineView.measure.caches = [])).push({});\n }\n }\n\n // See issue #2901\n if (webkit) {\n var last = builder.content.lastChild;\n if (/\\bcm-tab\\b/.test(last.className) || (last.querySelector && last.querySelector(\".cm-tab\")))\n { builder.content.className = \"cm-tab-wrap-hack\"; }\n }\n\n signal(cm, \"renderLine\", cm, lineView.line, builder.pre);\n if (builder.pre.className)\n { builder.textClass = joinClasses(builder.pre.className, builder.textClass || \"\"); }\n\n return builder\n }\n\n function defaultSpecialCharPlaceholder(ch) {\n var token = elt(\"span\", \"\\u2022\", \"cm-invalidchar\");\n token.title = \"\\\\u\" + ch.charCodeAt(0).toString(16);\n token.setAttribute(\"aria-label\", token.title);\n return token\n }\n\n // Build up the DOM representation for a single token, and add it to\n // the line map. Takes care to render special characters separately.\n function buildToken(builder, text, style, startStyle, endStyle, css, attributes) {\n if (!text) { return }\n var displayText = builder.splitSpaces ? splitSpaces(text, builder.trailingSpace) : text;\n var special = builder.cm.state.specialChars, mustWrap = false;\n var content;\n if (!special.test(text)) {\n builder.col += text.length;\n content = document.createTextNode(displayText);\n builder.map.push(builder.pos, builder.pos + text.length, content);\n if (ie && ie_version < 9) { mustWrap = true; }\n builder.pos += text.length;\n } else {\n content = document.createDocumentFragment();\n var pos = 0;\n while (true) {\n special.lastIndex = pos;\n var m = special.exec(text);\n var skipped = m ? m.index - pos : text.length - pos;\n if (skipped) {\n var txt = document.createTextNode(displayText.slice(pos, pos + skipped));\n if (ie && ie_version < 9) { content.appendChild(elt(\"span\", [txt])); }\n else { content.appendChild(txt); }\n builder.map.push(builder.pos, builder.pos + skipped, txt);\n builder.col += skipped;\n builder.pos += skipped;\n }\n if (!m) { break }\n pos += skipped + 1;\n var txt$1 = (void 0);\n if (m[0] == \"\\t\") {\n var tabSize = builder.cm.options.tabSize, tabWidth = tabSize - builder.col % tabSize;\n txt$1 = content.appendChild(elt(\"span\", spaceStr(tabWidth), \"cm-tab\"));\n txt$1.setAttribute(\"role\", \"presentation\");\n txt$1.setAttribute(\"cm-text\", \"\\t\");\n builder.col += tabWidth;\n } else if (m[0] == \"\\r\" || m[0] == \"\\n\") {\n txt$1 = content.appendChild(elt(\"span\", m[0] == \"\\r\" ? \"\\u240d\" : \"\\u2424\", \"cm-invalidchar\"));\n txt$1.setAttribute(\"cm-text\", m[0]);\n builder.col += 1;\n } else {\n txt$1 = builder.cm.options.specialCharPlaceholder(m[0]);\n txt$1.setAttribute(\"cm-text\", m[0]);\n if (ie && ie_version < 9) { content.appendChild(elt(\"span\", [txt$1])); }\n else { content.appendChild(txt$1); }\n builder.col += 1;\n }\n builder.map.push(builder.pos, builder.pos + 1, txt$1);\n builder.pos++;\n }\n }\n builder.trailingSpace = displayText.charCodeAt(text.length - 1) == 32;\n if (style || startStyle || endStyle || mustWrap || css || attributes) {\n var fullStyle = style || \"\";\n if (startStyle) { fullStyle += startStyle; }\n if (endStyle) { fullStyle += endStyle; }\n var token = elt(\"span\", [content], fullStyle, css);\n if (attributes) {\n for (var attr in attributes) { if (attributes.hasOwnProperty(attr) && attr != \"style\" && attr != \"class\")\n { token.setAttribute(attr, attributes[attr]); } }\n }\n return builder.content.appendChild(token)\n }\n builder.content.appendChild(content);\n }\n\n // Change some spaces to NBSP to prevent the browser from collapsing\n // trailing spaces at the end of a line when rendering text (issue #1362).\n function splitSpaces(text, trailingBefore) {\n if (text.length > 1 && !/ /.test(text)) { return text }\n var spaceBefore = trailingBefore, result = \"\";\n for (var i = 0; i < text.length; i++) {\n var ch = text.charAt(i);\n if (ch == \" \" && spaceBefore && (i == text.length - 1 || text.charCodeAt(i + 1) == 32))\n { ch = \"\\u00a0\"; }\n result += ch;\n spaceBefore = ch == \" \";\n }\n return result\n }\n\n // Work around nonsense dimensions being reported for stretches of\n // right-to-left text.\n function buildTokenBadBidi(inner, order) {\n return function (builder, text, style, startStyle, endStyle, css, attributes) {\n style = style ? style + \" cm-force-border\" : \"cm-force-border\";\n var start = builder.pos, end = start + text.length;\n for (;;) {\n // Find the part that overlaps with the start of this text\n var part = (void 0);\n for (var i = 0; i < order.length; i++) {\n part = order[i];\n if (part.to > start && part.from <= start) { break }\n }\n if (part.to >= end) { return inner(builder, text, style, startStyle, endStyle, css, attributes) }\n inner(builder, text.slice(0, part.to - start), style, startStyle, null, css, attributes);\n startStyle = null;\n text = text.slice(part.to - start);\n start = part.to;\n }\n }\n }\n\n function buildCollapsedSpan(builder, size, marker, ignoreWidget) {\n var widget = !ignoreWidget && marker.widgetNode;\n if (widget) { builder.map.push(builder.pos, builder.pos + size, widget); }\n if (!ignoreWidget && builder.cm.display.input.needsContentAttribute) {\n if (!widget)\n { widget = builder.content.appendChild(document.createElement(\"span\")); }\n widget.setAttribute(\"cm-marker\", marker.id);\n }\n if (widget) {\n builder.cm.display.input.setUneditable(widget);\n builder.content.appendChild(widget);\n }\n builder.pos += size;\n builder.trailingSpace = false;\n }\n\n // Outputs a number of spans to make up a line, taking highlighting\n // and marked text into account.\n function insertLineContent(line, builder, styles) {\n var spans = line.markedSpans, allText = line.text, at = 0;\n if (!spans) {\n for (var i$1 = 1; i$1 < styles.length; i$1+=2)\n { builder.addToken(builder, allText.slice(at, at = styles[i$1]), interpretTokenStyle(styles[i$1+1], builder.cm.options)); }\n return\n }\n\n var len = allText.length, pos = 0, i = 1, text = \"\", style, css;\n var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, collapsed, attributes;\n for (;;) {\n if (nextChange == pos) { // Update current marker set\n spanStyle = spanEndStyle = spanStartStyle = css = \"\";\n attributes = null;\n collapsed = null; nextChange = Infinity;\n var foundBookmarks = [], endStyles = (void 0);\n for (var j = 0; j < spans.length; ++j) {\n var sp = spans[j], m = sp.marker;\n if (m.type == \"bookmark\" && sp.from == pos && m.widgetNode) {\n foundBookmarks.push(m);\n } else if (sp.from <= pos && (sp.to == null || sp.to > pos || m.collapsed && sp.to == pos && sp.from == pos)) {\n if (sp.to != null && sp.to != pos && nextChange > sp.to) {\n nextChange = sp.to;\n spanEndStyle = \"\";\n }\n if (m.className) { spanStyle += \" \" + m.className; }\n if (m.css) { css = (css ? css + \";\" : \"\") + m.css; }\n if (m.startStyle && sp.from == pos) { spanStartStyle += \" \" + m.startStyle; }\n if (m.endStyle && sp.to == nextChange) { (endStyles || (endStyles = [])).push(m.endStyle, sp.to); }\n // support for the old title property\n // https://github.com/codemirror/CodeMirror/pull/5673\n if (m.title) { (attributes || (attributes = {})).title = m.title; }\n if (m.attributes) {\n for (var attr in m.attributes)\n { (attributes || (attributes = {}))[attr] = m.attributes[attr]; }\n }\n if (m.collapsed && (!collapsed || compareCollapsedMarkers(collapsed.marker, m) < 0))\n { collapsed = sp; }\n } else if (sp.from > pos && nextChange > sp.from) {\n nextChange = sp.from;\n }\n }\n if (endStyles) { for (var j$1 = 0; j$1 < endStyles.length; j$1 += 2)\n { if (endStyles[j$1 + 1] == nextChange) { spanEndStyle += \" \" + endStyles[j$1]; } } }\n\n if (!collapsed || collapsed.from == pos) { for (var j$2 = 0; j$2 < foundBookmarks.length; ++j$2)\n { buildCollapsedSpan(builder, 0, foundBookmarks[j$2]); } }\n if (collapsed && (collapsed.from || 0) == pos) {\n buildCollapsedSpan(builder, (collapsed.to == null ? len + 1 : collapsed.to) - pos,\n collapsed.marker, collapsed.from == null);\n if (collapsed.to == null) { return }\n if (collapsed.to == pos) { collapsed = false; }\n }\n }\n if (pos >= len) { break }\n\n var upto = Math.min(len, nextChange);\n while (true) {\n if (text) {\n var end = pos + text.length;\n if (!collapsed) {\n var tokenText = end > upto ? text.slice(0, upto - pos) : text;\n builder.addToken(builder, tokenText, style ? style + spanStyle : spanStyle,\n spanStartStyle, pos + tokenText.length == nextChange ? spanEndStyle : \"\", css, attributes);\n }\n if (end >= upto) {text = text.slice(upto - pos); pos = upto; break}\n pos = end;\n spanStartStyle = \"\";\n }\n text = allText.slice(at, at = styles[i++]);\n style = interpretTokenStyle(styles[i++], builder.cm.options);\n }\n }\n }\n\n\n // These objects are used to represent the visible (currently drawn)\n // part of the document. A LineView may correspond to multiple\n // logical lines, if those are connected by collapsed ranges.\n function LineView(doc, line, lineN) {\n // The starting line\n this.line = line;\n // Continuing lines, if any\n this.rest = visualLineContinued(line);\n // Number of logical lines in this visual line\n this.size = this.rest ? lineNo(lst(this.rest)) - lineN + 1 : 1;\n this.node = this.text = null;\n this.hidden = lineIsHidden(doc, line);\n }\n\n // Create a range of LineView objects for the given lines.\n function buildViewArray(cm, from, to) {\n var array = [], nextPos;\n for (var pos = from; pos < to; pos = nextPos) {\n var view = new LineView(cm.doc, getLine(cm.doc, pos), pos);\n nextPos = pos + view.size;\n array.push(view);\n }\n return array\n }\n\n var operationGroup = null;\n\n function pushOperation(op) {\n if (operationGroup) {\n operationGroup.ops.push(op);\n } else {\n op.ownsGroup = operationGroup = {\n ops: [op],\n delayedCallbacks: []\n };\n }\n }\n\n function fireCallbacksForOps(group) {\n // Calls delayed callbacks and cursorActivity handlers until no\n // new ones appear\n var callbacks = group.delayedCallbacks, i = 0;\n do {\n for (; i < callbacks.length; i++)\n { callbacks[i].call(null); }\n for (var j = 0; j < group.ops.length; j++) {\n var op = group.ops[j];\n if (op.cursorActivityHandlers)\n { while (op.cursorActivityCalled < op.cursorActivityHandlers.length)\n { op.cursorActivityHandlers[op.cursorActivityCalled++].call(null, op.cm); } }\n }\n } while (i < callbacks.length)\n }\n\n function finishOperation(op, endCb) {\n var group = op.ownsGroup;\n if (!group) { return }\n\n try { fireCallbacksForOps(group); }\n finally {\n operationGroup = null;\n endCb(group);\n }\n }\n\n var orphanDelayedCallbacks = null;\n\n // Often, we want to signal events at a point where we are in the\n // middle of some work, but don't want the handler to start calling\n // other methods on the editor, which might be in an inconsistent\n // state or simply not expect any other events to happen.\n // signalLater looks whether there are any handlers, and schedules\n // them to be executed when the last operation ends, or, if no\n // operation is active, when a timeout fires.\n function signalLater(emitter, type /*, values...*/) {\n var arr = getHandlers(emitter, type);\n if (!arr.length) { return }\n var args = Array.prototype.slice.call(arguments, 2), list;\n if (operationGroup) {\n list = operationGroup.delayedCallbacks;\n } else if (orphanDelayedCallbacks) {\n list = orphanDelayedCallbacks;\n } else {\n list = orphanDelayedCallbacks = [];\n setTimeout(fireOrphanDelayed, 0);\n }\n var loop = function ( i ) {\n list.push(function () { return arr[i].apply(null, args); });\n };\n\n for (var i = 0; i < arr.length; ++i)\n loop( i );\n }\n\n function fireOrphanDelayed() {\n var delayed = orphanDelayedCallbacks;\n orphanDelayedCallbacks = null;\n for (var i = 0; i < delayed.length; ++i) { delayed[i](); }\n }\n\n // When an aspect of a line changes, a string is added to\n // lineView.changes. This updates the relevant part of the line's\n // DOM structure.\n function updateLineForChanges(cm, lineView, lineN, dims) {\n for (var j = 0; j < lineView.changes.length; j++) {\n var type = lineView.changes[j];\n if (type == \"text\") { updateLineText(cm, lineView); }\n else if (type == \"gutter\") { updateLineGutter(cm, lineView, lineN, dims); }\n else if (type == \"class\") { updateLineClasses(cm, lineView); }\n else if (type == \"widget\") { updateLineWidgets(cm, lineView, dims); }\n }\n lineView.changes = null;\n }\n\n // Lines with gutter elements, widgets or a background class need to\n // be wrapped, and have the extra elements added to the wrapper div\n function ensureLineWrapped(lineView) {\n if (lineView.node == lineView.text) {\n lineView.node = elt(\"div\", null, null, \"position: relative\");\n if (lineView.text.parentNode)\n { lineView.text.parentNode.replaceChild(lineView.node, lineView.text); }\n lineView.node.appendChild(lineView.text);\n if (ie && ie_version < 8) { lineView.node.style.zIndex = 2; }\n }\n return lineView.node\n }\n\n function updateLineBackground(cm, lineView) {\n var cls = lineView.bgClass ? lineView.bgClass + \" \" + (lineView.line.bgClass || \"\") : lineView.line.bgClass;\n if (cls) { cls += \" CodeMirror-linebackground\"; }\n if (lineView.background) {\n if (cls) { lineView.background.className = cls; }\n else { lineView.background.parentNode.removeChild(lineView.background); lineView.background = null; }\n } else if (cls) {\n var wrap = ensureLineWrapped(lineView);\n lineView.background = wrap.insertBefore(elt(\"div\", null, cls), wrap.firstChild);\n cm.display.input.setUneditable(lineView.background);\n }\n }\n\n // Wrapper around buildLineContent which will reuse the structure\n // in display.externalMeasured when possible.\n function getLineContent(cm, lineView) {\n var ext = cm.display.externalMeasured;\n if (ext && ext.line == lineView.line) {\n cm.display.externalMeasured = null;\n lineView.measure = ext.measure;\n return ext.built\n }\n return buildLineContent(cm, lineView)\n }\n\n // Redraw the line's text. Interacts with the background and text\n // classes because the mode may output tokens that influence these\n // classes.\n function updateLineText(cm, lineView) {\n var cls = lineView.text.className;\n var built = getLineContent(cm, lineView);\n if (lineView.text == lineView.node) { lineView.node = built.pre; }\n lineView.text.parentNode.replaceChild(built.pre, lineView.text);\n lineView.text = built.pre;\n if (built.bgClass != lineView.bgClass || built.textClass != lineView.textClass) {\n lineView.bgClass = built.bgClass;\n lineView.textClass = built.textClass;\n updateLineClasses(cm, lineView);\n } else if (cls) {\n lineView.text.className = cls;\n }\n }\n\n function updateLineClasses(cm, lineView) {\n updateLineBackground(cm, lineView);\n if (lineView.line.wrapClass)\n { ensureLineWrapped(lineView).className = lineView.line.wrapClass; }\n else if (lineView.node != lineView.text)\n { lineView.node.className = \"\"; }\n var textClass = lineView.textClass ? lineView.textClass + \" \" + (lineView.line.textClass || \"\") : lineView.line.textClass;\n lineView.text.className = textClass || \"\";\n }\n\n function updateLineGutter(cm, lineView, lineN, dims) {\n if (lineView.gutter) {\n lineView.node.removeChild(lineView.gutter);\n lineView.gutter = null;\n }\n if (lineView.gutterBackground) {\n lineView.node.removeChild(lineView.gutterBackground);\n lineView.gutterBackground = null;\n }\n if (lineView.line.gutterClass) {\n var wrap = ensureLineWrapped(lineView);\n lineView.gutterBackground = elt(\"div\", null, \"CodeMirror-gutter-background \" + lineView.line.gutterClass,\n (\"left: \" + (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + \"px; width: \" + (dims.gutterTotalWidth) + \"px\"));\n cm.display.input.setUneditable(lineView.gutterBackground);\n wrap.insertBefore(lineView.gutterBackground, lineView.text);\n }\n var markers = lineView.line.gutterMarkers;\n if (cm.options.lineNumbers || markers) {\n var wrap$1 = ensureLineWrapped(lineView);\n var gutterWrap = lineView.gutter = elt(\"div\", null, \"CodeMirror-gutter-wrapper\", (\"left: \" + (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + \"px\"));\n gutterWrap.setAttribute(\"aria-hidden\", \"true\");\n cm.display.input.setUneditable(gutterWrap);\n wrap$1.insertBefore(gutterWrap, lineView.text);\n if (lineView.line.gutterClass)\n { gutterWrap.className += \" \" + lineView.line.gutterClass; }\n if (cm.options.lineNumbers && (!markers || !markers[\"CodeMirror-linenumbers\"]))\n { lineView.lineNumber = gutterWrap.appendChild(\n elt(\"div\", lineNumberFor(cm.options, lineN),\n \"CodeMirror-linenumber CodeMirror-gutter-elt\",\n (\"left: \" + (dims.gutterLeft[\"CodeMirror-linenumbers\"]) + \"px; width: \" + (cm.display.lineNumInnerWidth) + \"px\"))); }\n if (markers) { for (var k = 0; k < cm.display.gutterSpecs.length; ++k) {\n var id = cm.display.gutterSpecs[k].className, found = markers.hasOwnProperty(id) && markers[id];\n if (found)\n { gutterWrap.appendChild(elt(\"div\", [found], \"CodeMirror-gutter-elt\",\n (\"left: \" + (dims.gutterLeft[id]) + \"px; width: \" + (dims.gutterWidth[id]) + \"px\"))); }\n } }\n }\n }\n\n function updateLineWidgets(cm, lineView, dims) {\n if (lineView.alignable) { lineView.alignable = null; }\n var isWidget = classTest(\"CodeMirror-linewidget\");\n for (var node = lineView.node.firstChild, next = (void 0); node; node = next) {\n next = node.nextSibling;\n if (isWidget.test(node.className)) { lineView.node.removeChild(node); }\n }\n insertLineWidgets(cm, lineView, dims);\n }\n\n // Build a line's DOM representation from scratch\n function buildLineElement(cm, lineView, lineN, dims) {\n var built = getLineContent(cm, lineView);\n lineView.text = lineView.node = built.pre;\n if (built.bgClass) { lineView.bgClass = built.bgClass; }\n if (built.textClass) { lineView.textClass = built.textClass; }\n\n updateLineClasses(cm, lineView);\n updateLineGutter(cm, lineView, lineN, dims);\n insertLineWidgets(cm, lineView, dims);\n return lineView.node\n }\n\n // A lineView may contain multiple logical lines (when merged by\n // collapsed spans). The widgets for all of them need to be drawn.\n function insertLineWidgets(cm, lineView, dims) {\n insertLineWidgetsFor(cm, lineView.line, lineView, dims, true);\n if (lineView.rest) { for (var i = 0; i < lineView.rest.length; i++)\n { insertLineWidgetsFor(cm, lineView.rest[i], lineView, dims, false); } }\n }\n\n function insertLineWidgetsFor(cm, line, lineView, dims, allowAbove) {\n if (!line.widgets) { return }\n var wrap = ensureLineWrapped(lineView);\n for (var i = 0, ws = line.widgets; i < ws.length; ++i) {\n var widget = ws[i], node = elt(\"div\", [widget.node], \"CodeMirror-linewidget\" + (widget.className ? \" \" + widget.className : \"\"));\n if (!widget.handleMouseEvents) { node.setAttribute(\"cm-ignore-events\", \"true\"); }\n positionLineWidget(widget, node, lineView, dims);\n cm.display.input.setUneditable(node);\n if (allowAbove && widget.above)\n { wrap.insertBefore(node, lineView.gutter || lineView.text); }\n else\n { wrap.appendChild(node); }\n signalLater(widget, \"redraw\");\n }\n }\n\n function positionLineWidget(widget, node, lineView, dims) {\n if (widget.noHScroll) {\n (lineView.alignable || (lineView.alignable = [])).push(node);\n var width = dims.wrapperWidth;\n node.style.left = dims.fixedPos + \"px\";\n if (!widget.coverGutter) {\n width -= dims.gutterTotalWidth;\n node.style.paddingLeft = dims.gutterTotalWidth + \"px\";\n }\n node.style.width = width + \"px\";\n }\n if (widget.coverGutter) {\n node.style.zIndex = 5;\n node.style.position = \"relative\";\n if (!widget.noHScroll) { node.style.marginLeft = -dims.gutterTotalWidth + \"px\"; }\n }\n }\n\n function widgetHeight(widget) {\n if (widget.height != null) { return widget.height }\n var cm = widget.doc.cm;\n if (!cm) { return 0 }\n if (!contains(document.body, widget.node)) {\n var parentStyle = \"position: relative;\";\n if (widget.coverGutter)\n { parentStyle += \"margin-left: -\" + cm.display.gutters.offsetWidth + \"px;\"; }\n if (widget.noHScroll)\n { parentStyle += \"width: \" + cm.display.wrapper.clientWidth + \"px;\"; }\n removeChildrenAndAdd(cm.display.measure, elt(\"div\", [widget.node], null, parentStyle));\n }\n return widget.height = widget.node.parentNode.offsetHeight\n }\n\n // Return true when the given mouse event happened in a widget\n function eventInWidget(display, e) {\n for (var n = e_target(e); n != display.wrapper; n = n.parentNode) {\n if (!n || (n.nodeType == 1 && n.getAttribute(\"cm-ignore-events\") == \"true\") ||\n (n.parentNode == display.sizer && n != display.mover))\n { return true }\n }\n }\n\n // POSITION MEASUREMENT\n\n function paddingTop(display) {return display.lineSpace.offsetTop}\n function paddingVert(display) {return display.mover.offsetHeight - display.lineSpace.offsetHeight}\n function paddingH(display) {\n if (display.cachedPaddingH) { return display.cachedPaddingH }\n var e = removeChildrenAndAdd(display.measure, elt(\"pre\", \"x\", \"CodeMirror-line-like\"));\n var style = window.getComputedStyle ? window.getComputedStyle(e) : e.currentStyle;\n var data = {left: parseInt(style.paddingLeft), right: parseInt(style.paddingRight)};\n if (!isNaN(data.left) && !isNaN(data.right)) { display.cachedPaddingH = data; }\n return data\n }\n\n function scrollGap(cm) { return scrollerGap - cm.display.nativeBarWidth }\n function displayWidth(cm) {\n return cm.display.scroller.clientWidth - scrollGap(cm) - cm.display.barWidth\n }\n function displayHeight(cm) {\n return cm.display.scroller.clientHeight - scrollGap(cm) - cm.display.barHeight\n }\n\n // Ensure the lineView.wrapping.heights array is populated. This is\n // an array of bottom offsets for the lines that make up a drawn\n // line. When lineWrapping is on, there might be more than one\n // height.\n function ensureLineHeights(cm, lineView, rect) {\n var wrapping = cm.options.lineWrapping;\n var curWidth = wrapping && displayWidth(cm);\n if (!lineView.measure.heights || wrapping && lineView.measure.width != curWidth) {\n var heights = lineView.measure.heights = [];\n if (wrapping) {\n lineView.measure.width = curWidth;\n var rects = lineView.text.firstChild.getClientRects();\n for (var i = 0; i < rects.length - 1; i++) {\n var cur = rects[i], next = rects[i + 1];\n if (Math.abs(cur.bottom - next.bottom) > 2)\n { heights.push((cur.bottom + next.top) / 2 - rect.top); }\n }\n }\n heights.push(rect.bottom - rect.top);\n }\n }\n\n // Find a line map (mapping character offsets to text nodes) and a\n // measurement cache for the given line number. (A line view might\n // contain multiple lines when collapsed ranges are present.)\n function mapFromLineView(lineView, line, lineN) {\n if (lineView.line == line)\n { return {map: lineView.measure.map, cache: lineView.measure.cache} }\n if (lineView.rest) {\n for (var i = 0; i < lineView.rest.length; i++)\n { if (lineView.rest[i] == line)\n { return {map: lineView.measure.maps[i], cache: lineView.measure.caches[i]} } }\n for (var i$1 = 0; i$1 < lineView.rest.length; i$1++)\n { if (lineNo(lineView.rest[i$1]) > lineN)\n { return {map: lineView.measure.maps[i$1], cache: lineView.measure.caches[i$1], before: true} } }\n }\n }\n\n // Render a line into the hidden node display.externalMeasured. Used\n // when measurement is needed for a line that's not in the viewport.\n function updateExternalMeasurement(cm, line) {\n line = visualLine(line);\n var lineN = lineNo(line);\n var view = cm.display.externalMeasured = new LineView(cm.doc, line, lineN);\n view.lineN = lineN;\n var built = view.built = buildLineContent(cm, view);\n view.text = built.pre;\n removeChildrenAndAdd(cm.display.lineMeasure, built.pre);\n return view\n }\n\n // Get a {top, bottom, left, right} box (in line-local coordinates)\n // for a given character.\n function measureChar(cm, line, ch, bias) {\n return measureCharPrepared(cm, prepareMeasureForLine(cm, line), ch, bias)\n }\n\n // Find a line view that corresponds to the given line number.\n function findViewForLine(cm, lineN) {\n if (lineN >= cm.display.viewFrom && lineN < cm.display.viewTo)\n { return cm.display.view[findViewIndex(cm, lineN)] }\n var ext = cm.display.externalMeasured;\n if (ext && lineN >= ext.lineN && lineN < ext.lineN + ext.size)\n { return ext }\n }\n\n // Measurement can be split in two steps, the set-up work that\n // applies to the whole line, and the measurement of the actual\n // character. Functions like coordsChar, that need to do a lot of\n // measurements in a row, can thus ensure that the set-up work is\n // only done once.\n function prepareMeasureForLine(cm, line) {\n var lineN = lineNo(line);\n var view = findViewForLine(cm, lineN);\n if (view && !view.text) {\n view = null;\n } else if (view && view.changes) {\n updateLineForChanges(cm, view, lineN, getDimensions(cm));\n cm.curOp.forceUpdate = true;\n }\n if (!view)\n { view = updateExternalMeasurement(cm, line); }\n\n var info = mapFromLineView(view, line, lineN);\n return {\n line: line, view: view, rect: null,\n map: info.map, cache: info.cache, before: info.before,\n hasHeights: false\n }\n }\n\n // Given a prepared measurement object, measures the position of an\n // actual character (or fetches it from the cache).\n function measureCharPrepared(cm, prepared, ch, bias, varHeight) {\n if (prepared.before) { ch = -1; }\n var key = ch + (bias || \"\"), found;\n if (prepared.cache.hasOwnProperty(key)) {\n found = prepared.cache[key];\n } else {\n if (!prepared.rect)\n { prepared.rect = prepared.view.text.getBoundingClientRect(); }\n if (!prepared.hasHeights) {\n ensureLineHeights(cm, prepared.view, prepared.rect);\n prepared.hasHeights = true;\n }\n found = measureCharInner(cm, prepared, ch, bias);\n if (!found.bogus) { prepared.cache[key] = found; }\n }\n return {left: found.left, right: found.right,\n top: varHeight ? found.rtop : found.top,\n bottom: varHeight ? found.rbottom : found.bottom}\n }\n\n var nullRect = {left: 0, right: 0, top: 0, bottom: 0};\n\n function nodeAndOffsetInLineMap(map, ch, bias) {\n var node, start, end, collapse, mStart, mEnd;\n // First, search the line map for the text node corresponding to,\n // or closest to, the target character.\n for (var i = 0; i < map.length; i += 3) {\n mStart = map[i];\n mEnd = map[i + 1];\n if (ch < mStart) {\n start = 0; end = 1;\n collapse = \"left\";\n } else if (ch < mEnd) {\n start = ch - mStart;\n end = start + 1;\n } else if (i == map.length - 3 || ch == mEnd && map[i + 3] > ch) {\n end = mEnd - mStart;\n start = end - 1;\n if (ch >= mEnd) { collapse = \"right\"; }\n }\n if (start != null) {\n node = map[i + 2];\n if (mStart == mEnd && bias == (node.insertLeft ? \"left\" : \"right\"))\n { collapse = bias; }\n if (bias == \"left\" && start == 0)\n { while (i && map[i - 2] == map[i - 3] && map[i - 1].insertLeft) {\n node = map[(i -= 3) + 2];\n collapse = \"left\";\n } }\n if (bias == \"right\" && start == mEnd - mStart)\n { while (i < map.length - 3 && map[i + 3] == map[i + 4] && !map[i + 5].insertLeft) {\n node = map[(i += 3) + 2];\n collapse = \"right\";\n } }\n break\n }\n }\n return {node: node, start: start, end: end, collapse: collapse, coverStart: mStart, coverEnd: mEnd}\n }\n\n function getUsefulRect(rects, bias) {\n var rect = nullRect;\n if (bias == \"left\") { for (var i = 0; i < rects.length; i++) {\n if ((rect = rects[i]).left != rect.right) { break }\n } } else { for (var i$1 = rects.length - 1; i$1 >= 0; i$1--) {\n if ((rect = rects[i$1]).left != rect.right) { break }\n } }\n return rect\n }\n\n function measureCharInner(cm, prepared, ch, bias) {\n var place = nodeAndOffsetInLineMap(prepared.map, ch, bias);\n var node = place.node, start = place.start, end = place.end, collapse = place.collapse;\n\n var rect;\n if (node.nodeType == 3) { // If it is a text node, use a range to retrieve the coordinates.\n for (var i$1 = 0; i$1 < 4; i$1++) { // Retry a maximum of 4 times when nonsense rectangles are returned\n while (start && isExtendingChar(prepared.line.text.charAt(place.coverStart + start))) { --start; }\n while (place.coverStart + end < place.coverEnd && isExtendingChar(prepared.line.text.charAt(place.coverStart + end))) { ++end; }\n if (ie && ie_version < 9 && start == 0 && end == place.coverEnd - place.coverStart)\n { rect = node.parentNode.getBoundingClientRect(); }\n else\n { rect = getUsefulRect(range(node, start, end).getClientRects(), bias); }\n if (rect.left || rect.right || start == 0) { break }\n end = start;\n start = start - 1;\n collapse = \"right\";\n }\n if (ie && ie_version < 11) { rect = maybeUpdateRectForZooming(cm.display.measure, rect); }\n } else { // If it is a widget, simply get the box for the whole widget.\n if (start > 0) { collapse = bias = \"right\"; }\n var rects;\n if (cm.options.lineWrapping && (rects = node.getClientRects()).length > 1)\n { rect = rects[bias == \"right\" ? rects.length - 1 : 0]; }\n else\n { rect = node.getBoundingClientRect(); }\n }\n if (ie && ie_version < 9 && !start && (!rect || !rect.left && !rect.right)) {\n var rSpan = node.parentNode.getClientRects()[0];\n if (rSpan)\n { rect = {left: rSpan.left, right: rSpan.left + charWidth(cm.display), top: rSpan.top, bottom: rSpan.bottom}; }\n else\n { rect = nullRect; }\n }\n\n var rtop = rect.top - prepared.rect.top, rbot = rect.bottom - prepared.rect.top;\n var mid = (rtop + rbot) / 2;\n var heights = prepared.view.measure.heights;\n var i = 0;\n for (; i < heights.length - 1; i++)\n { if (mid < heights[i]) { break } }\n var top = i ? heights[i - 1] : 0, bot = heights[i];\n var result = {left: (collapse == \"right\" ? rect.right : rect.left) - prepared.rect.left,\n right: (collapse == \"left\" ? rect.left : rect.right) - prepared.rect.left,\n top: top, bottom: bot};\n if (!rect.left && !rect.right) { result.bogus = true; }\n if (!cm.options.singleCursorHeightPerLine) { result.rtop = rtop; result.rbottom = rbot; }\n\n return result\n }\n\n // Work around problem with bounding client rects on ranges being\n // returned incorrectly when zoomed on IE10 and below.\n function maybeUpdateRectForZooming(measure, rect) {\n if (!window.screen || screen.logicalXDPI == null ||\n screen.logicalXDPI == screen.deviceXDPI || !hasBadZoomedRects(measure))\n { return rect }\n var scaleX = screen.logicalXDPI / screen.deviceXDPI;\n var scaleY = screen.logicalYDPI / screen.deviceYDPI;\n return {left: rect.left * scaleX, right: rect.right * scaleX,\n top: rect.top * scaleY, bottom: rect.bottom * scaleY}\n }\n\n function clearLineMeasurementCacheFor(lineView) {\n if (lineView.measure) {\n lineView.measure.cache = {};\n lineView.measure.heights = null;\n if (lineView.rest) { for (var i = 0; i < lineView.rest.length; i++)\n { lineView.measure.caches[i] = {}; } }\n }\n }\n\n function clearLineMeasurementCache(cm) {\n cm.display.externalMeasure = null;\n removeChildren(cm.display.lineMeasure);\n for (var i = 0; i < cm.display.view.length; i++)\n { clearLineMeasurementCacheFor(cm.display.view[i]); }\n }\n\n function clearCaches(cm) {\n clearLineMeasurementCache(cm);\n cm.display.cachedCharWidth = cm.display.cachedTextHeight = cm.display.cachedPaddingH = null;\n if (!cm.options.lineWrapping) { cm.display.maxLineChanged = true; }\n cm.display.lineNumChars = null;\n }\n\n function pageScrollX(doc) {\n // Work around https://bugs.chromium.org/p/chromium/issues/detail?id=489206\n // which causes page_Offset and bounding client rects to use\n // different reference viewports and invalidate our calculations.\n if (chrome && android) { return -(doc.body.getBoundingClientRect().left - parseInt(getComputedStyle(doc.body).marginLeft)) }\n return doc.defaultView.pageXOffset || (doc.documentElement || doc.body).scrollLeft\n }\n function pageScrollY(doc) {\n if (chrome && android) { return -(doc.body.getBoundingClientRect().top - parseInt(getComputedStyle(doc.body).marginTop)) }\n return doc.defaultView.pageYOffset || (doc.documentElement || doc.body).scrollTop\n }\n\n function widgetTopHeight(lineObj) {\n var ref = visualLine(lineObj);\n var widgets = ref.widgets;\n var height = 0;\n if (widgets) { for (var i = 0; i < widgets.length; ++i) { if (widgets[i].above)\n { height += widgetHeight(widgets[i]); } } }\n return height\n }\n\n // Converts a {top, bottom, left, right} box from line-local\n // coordinates into another coordinate system. Context may be one of\n // \"line\", \"div\" (display.lineDiv), \"local\"./null (editor), \"window\",\n // or \"page\".\n function intoCoordSystem(cm, lineObj, rect, context, includeWidgets) {\n if (!includeWidgets) {\n var height = widgetTopHeight(lineObj);\n rect.top += height; rect.bottom += height;\n }\n if (context == \"line\") { return rect }\n if (!context) { context = \"local\"; }\n var yOff = heightAtLine(lineObj);\n if (context == \"local\") { yOff += paddingTop(cm.display); }\n else { yOff -= cm.display.viewOffset; }\n if (context == \"page\" || context == \"window\") {\n var lOff = cm.display.lineSpace.getBoundingClientRect();\n yOff += lOff.top + (context == \"window\" ? 0 : pageScrollY(doc(cm)));\n var xOff = lOff.left + (context == \"window\" ? 0 : pageScrollX(doc(cm)));\n rect.left += xOff; rect.right += xOff;\n }\n rect.top += yOff; rect.bottom += yOff;\n return rect\n }\n\n // Coverts a box from \"div\" coords to another coordinate system.\n // Context may be \"window\", \"page\", \"div\", or \"local\"./null.\n function fromCoordSystem(cm, coords, context) {\n if (context == \"div\") { return coords }\n var left = coords.left, top = coords.top;\n // First move into \"page\" coordinate system\n if (context == \"page\") {\n left -= pageScrollX(doc(cm));\n top -= pageScrollY(doc(cm));\n } else if (context == \"local\" || !context) {\n var localBox = cm.display.sizer.getBoundingClientRect();\n left += localBox.left;\n top += localBox.top;\n }\n\n var lineSpaceBox = cm.display.lineSpace.getBoundingClientRect();\n return {left: left - lineSpaceBox.left, top: top - lineSpaceBox.top}\n }\n\n function charCoords(cm, pos, context, lineObj, bias) {\n if (!lineObj) { lineObj = getLine(cm.doc, pos.line); }\n return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch, bias), context)\n }\n\n // Returns a box for a given cursor position, which may have an\n // 'other' property containing the position of the secondary cursor\n // on a bidi boundary.\n // A cursor Pos(line, char, \"before\") is on the same visual line as `char - 1`\n // and after `char - 1` in writing order of `char - 1`\n // A cursor Pos(line, char, \"after\") is on the same visual line as `char`\n // and before `char` in writing order of `char`\n // Examples (upper-case letters are RTL, lower-case are LTR):\n // Pos(0, 1, ...)\n // before after\n // ab a|b a|b\n // aB a|B aB|\n // Ab |Ab A|b\n // AB B|A B|A\n // Every position after the last character on a line is considered to stick\n // to the last character on the line.\n function cursorCoords(cm, pos, context, lineObj, preparedMeasure, varHeight) {\n lineObj = lineObj || getLine(cm.doc, pos.line);\n if (!preparedMeasure) { preparedMeasure = prepareMeasureForLine(cm, lineObj); }\n function get(ch, right) {\n var m = measureCharPrepared(cm, preparedMeasure, ch, right ? \"right\" : \"left\", varHeight);\n if (right) { m.left = m.right; } else { m.right = m.left; }\n return intoCoordSystem(cm, lineObj, m, context)\n }\n var order = getOrder(lineObj, cm.doc.direction), ch = pos.ch, sticky = pos.sticky;\n if (ch >= lineObj.text.length) {\n ch = lineObj.text.length;\n sticky = \"before\";\n } else if (ch <= 0) {\n ch = 0;\n sticky = \"after\";\n }\n if (!order) { return get(sticky == \"before\" ? ch - 1 : ch, sticky == \"before\") }\n\n function getBidi(ch, partPos, invert) {\n var part = order[partPos], right = part.level == 1;\n return get(invert ? ch - 1 : ch, right != invert)\n }\n var partPos = getBidiPartAt(order, ch, sticky);\n var other = bidiOther;\n var val = getBidi(ch, partPos, sticky == \"before\");\n if (other != null) { val.other = getBidi(ch, other, sticky != \"before\"); }\n return val\n }\n\n // Used to cheaply estimate the coordinates for a position. Used for\n // intermediate scroll updates.\n function estimateCoords(cm, pos) {\n var left = 0;\n pos = clipPos(cm.doc, pos);\n if (!cm.options.lineWrapping) { left = charWidth(cm.display) * pos.ch; }\n var lineObj = getLine(cm.doc, pos.line);\n var top = heightAtLine(lineObj) + paddingTop(cm.display);\n return {left: left, right: left, top: top, bottom: top + lineObj.height}\n }\n\n // Positions returned by coordsChar contain some extra information.\n // xRel is the relative x position of the input coordinates compared\n // to the found position (so xRel > 0 means the coordinates are to\n // the right of the character position, for example). When outside\n // is true, that means the coordinates lie outside the line's\n // vertical range.\n function PosWithInfo(line, ch, sticky, outside, xRel) {\n var pos = Pos(line, ch, sticky);\n pos.xRel = xRel;\n if (outside) { pos.outside = outside; }\n return pos\n }\n\n // Compute the character position closest to the given coordinates.\n // Input must be lineSpace-local (\"div\" coordinate system).\n function coordsChar(cm, x, y) {\n var doc = cm.doc;\n y += cm.display.viewOffset;\n if (y < 0) { return PosWithInfo(doc.first, 0, null, -1, -1) }\n var lineN = lineAtHeight(doc, y), last = doc.first + doc.size - 1;\n if (lineN > last)\n { return PosWithInfo(doc.first + doc.size - 1, getLine(doc, last).text.length, null, 1, 1) }\n if (x < 0) { x = 0; }\n\n var lineObj = getLine(doc, lineN);\n for (;;) {\n var found = coordsCharInner(cm, lineObj, lineN, x, y);\n var collapsed = collapsedSpanAround(lineObj, found.ch + (found.xRel > 0 || found.outside > 0 ? 1 : 0));\n if (!collapsed) { return found }\n var rangeEnd = collapsed.find(1);\n if (rangeEnd.line == lineN) { return rangeEnd }\n lineObj = getLine(doc, lineN = rangeEnd.line);\n }\n }\n\n function wrappedLineExtent(cm, lineObj, preparedMeasure, y) {\n y -= widgetTopHeight(lineObj);\n var end = lineObj.text.length;\n var begin = findFirst(function (ch) { return measureCharPrepared(cm, preparedMeasure, ch - 1).bottom <= y; }, end, 0);\n end = findFirst(function (ch) { return measureCharPrepared(cm, preparedMeasure, ch).top > y; }, begin, end);\n return {begin: begin, end: end}\n }\n\n function wrappedLineExtentChar(cm, lineObj, preparedMeasure, target) {\n if (!preparedMeasure) { preparedMeasure = prepareMeasureForLine(cm, lineObj); }\n var targetTop = intoCoordSystem(cm, lineObj, measureCharPrepared(cm, preparedMeasure, target), \"line\").top;\n return wrappedLineExtent(cm, lineObj, preparedMeasure, targetTop)\n }\n\n // Returns true if the given side of a box is after the given\n // coordinates, in top-to-bottom, left-to-right order.\n function boxIsAfter(box, x, y, left) {\n return box.bottom <= y ? false : box.top > y ? true : (left ? box.left : box.right) > x\n }\n\n function coordsCharInner(cm, lineObj, lineNo, x, y) {\n // Move y into line-local coordinate space\n y -= heightAtLine(lineObj);\n var preparedMeasure = prepareMeasureForLine(cm, lineObj);\n // When directly calling `measureCharPrepared`, we have to adjust\n // for the widgets at this line.\n var widgetHeight = widgetTopHeight(lineObj);\n var begin = 0, end = lineObj.text.length, ltr = true;\n\n var order = getOrder(lineObj, cm.doc.direction);\n // If the line isn't plain left-to-right text, first figure out\n // which bidi section the coordinates fall into.\n if (order) {\n var part = (cm.options.lineWrapping ? coordsBidiPartWrapped : coordsBidiPart)\n (cm, lineObj, lineNo, preparedMeasure, order, x, y);\n ltr = part.level != 1;\n // The awkward -1 offsets are needed because findFirst (called\n // on these below) will treat its first bound as inclusive,\n // second as exclusive, but we want to actually address the\n // characters in the part's range\n begin = ltr ? part.from : part.to - 1;\n end = ltr ? part.to : part.from - 1;\n }\n\n // A binary search to find the first character whose bounding box\n // starts after the coordinates. If we run across any whose box wrap\n // the coordinates, store that.\n var chAround = null, boxAround = null;\n var ch = findFirst(function (ch) {\n var box = measureCharPrepared(cm, preparedMeasure, ch);\n box.top += widgetHeight; box.bottom += widgetHeight;\n if (!boxIsAfter(box, x, y, false)) { return false }\n if (box.top <= y && box.left <= x) {\n chAround = ch;\n boxAround = box;\n }\n return true\n }, begin, end);\n\n var baseX, sticky, outside = false;\n // If a box around the coordinates was found, use that\n if (boxAround) {\n // Distinguish coordinates nearer to the left or right side of the box\n var atLeft = x - boxAround.left < boxAround.right - x, atStart = atLeft == ltr;\n ch = chAround + (atStart ? 0 : 1);\n sticky = atStart ? \"after\" : \"before\";\n baseX = atLeft ? boxAround.left : boxAround.right;\n } else {\n // (Adjust for extended bound, if necessary.)\n if (!ltr && (ch == end || ch == begin)) { ch++; }\n // To determine which side to associate with, get the box to the\n // left of the character and compare it's vertical position to the\n // coordinates\n sticky = ch == 0 ? \"after\" : ch == lineObj.text.length ? \"before\" :\n (measureCharPrepared(cm, preparedMeasure, ch - (ltr ? 1 : 0)).bottom + widgetHeight <= y) == ltr ?\n \"after\" : \"before\";\n // Now get accurate coordinates for this place, in order to get a\n // base X position\n var coords = cursorCoords(cm, Pos(lineNo, ch, sticky), \"line\", lineObj, preparedMeasure);\n baseX = coords.left;\n outside = y < coords.top ? -1 : y >= coords.bottom ? 1 : 0;\n }\n\n ch = skipExtendingChars(lineObj.text, ch, 1);\n return PosWithInfo(lineNo, ch, sticky, outside, x - baseX)\n }\n\n function coordsBidiPart(cm, lineObj, lineNo, preparedMeasure, order, x, y) {\n // Bidi parts are sorted left-to-right, and in a non-line-wrapping\n // situation, we can take this ordering to correspond to the visual\n // ordering. This finds the first part whose end is after the given\n // coordinates.\n var index = findFirst(function (i) {\n var part = order[i], ltr = part.level != 1;\n return boxIsAfter(cursorCoords(cm, Pos(lineNo, ltr ? part.to : part.from, ltr ? \"before\" : \"after\"),\n \"line\", lineObj, preparedMeasure), x, y, true)\n }, 0, order.length - 1);\n var part = order[index];\n // If this isn't the first part, the part's start is also after\n // the coordinates, and the coordinates aren't on the same line as\n // that start, move one part back.\n if (index > 0) {\n var ltr = part.level != 1;\n var start = cursorCoords(cm, Pos(lineNo, ltr ? part.from : part.to, ltr ? \"after\" : \"before\"),\n \"line\", lineObj, preparedMeasure);\n if (boxIsAfter(start, x, y, true) && start.top > y)\n { part = order[index - 1]; }\n }\n return part\n }\n\n function coordsBidiPartWrapped(cm, lineObj, _lineNo, preparedMeasure, order, x, y) {\n // In a wrapped line, rtl text on wrapping boundaries can do things\n // that don't correspond to the ordering in our `order` array at\n // all, so a binary search doesn't work, and we want to return a\n // part that only spans one line so that the binary search in\n // coordsCharInner is safe. As such, we first find the extent of the\n // wrapped line, and then do a flat search in which we discard any\n // spans that aren't on the line.\n var ref = wrappedLineExtent(cm, lineObj, preparedMeasure, y);\n var begin = ref.begin;\n var end = ref.end;\n if (/\\s/.test(lineObj.text.charAt(end - 1))) { end--; }\n var part = null, closestDist = null;\n for (var i = 0; i < order.length; i++) {\n var p = order[i];\n if (p.from >= end || p.to <= begin) { continue }\n var ltr = p.level != 1;\n var endX = measureCharPrepared(cm, preparedMeasure, ltr ? Math.min(end, p.to) - 1 : Math.max(begin, p.from)).right;\n // Weigh against spans ending before this, so that they are only\n // picked if nothing ends after\n var dist = endX < x ? x - endX + 1e9 : endX - x;\n if (!part || closestDist > dist) {\n part = p;\n closestDist = dist;\n }\n }\n if (!part) { part = order[order.length - 1]; }\n // Clip the part to the wrapped line.\n if (part.from < begin) { part = {from: begin, to: part.to, level: part.level}; }\n if (part.to > end) { part = {from: part.from, to: end, level: part.level}; }\n return part\n }\n\n var measureText;\n // Compute the default text height.\n function textHeight(display) {\n if (display.cachedTextHeight != null) { return display.cachedTextHeight }\n if (measureText == null) {\n measureText = elt(\"pre\", null, \"CodeMirror-line-like\");\n // Measure a bunch of lines, for browsers that compute\n // fractional heights.\n for (var i = 0; i < 49; ++i) {\n measureText.appendChild(document.createTextNode(\"x\"));\n measureText.appendChild(elt(\"br\"));\n }\n measureText.appendChild(document.createTextNode(\"x\"));\n }\n removeChildrenAndAdd(display.measure, measureText);\n var height = measureText.offsetHeight / 50;\n if (height > 3) { display.cachedTextHeight = height; }\n removeChildren(display.measure);\n return height || 1\n }\n\n // Compute the default character width.\n function charWidth(display) {\n if (display.cachedCharWidth != null) { return display.cachedCharWidth }\n var anchor = elt(\"span\", \"xxxxxxxxxx\");\n var pre = elt(\"pre\", [anchor], \"CodeMirror-line-like\");\n removeChildrenAndAdd(display.measure, pre);\n var rect = anchor.getBoundingClientRect(), width = (rect.right - rect.left) / 10;\n if (width > 2) { display.cachedCharWidth = width; }\n return width || 10\n }\n\n // Do a bulk-read of the DOM positions and sizes needed to draw the\n // view, so that we don't interleave reading and writing to the DOM.\n function getDimensions(cm) {\n var d = cm.display, left = {}, width = {};\n var gutterLeft = d.gutters.clientLeft;\n for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) {\n var id = cm.display.gutterSpecs[i].className;\n left[id] = n.offsetLeft + n.clientLeft + gutterLeft;\n width[id] = n.clientWidth;\n }\n return {fixedPos: compensateForHScroll(d),\n gutterTotalWidth: d.gutters.offsetWidth,\n gutterLeft: left,\n gutterWidth: width,\n wrapperWidth: d.wrapper.clientWidth}\n }\n\n // Computes display.scroller.scrollLeft + display.gutters.offsetWidth,\n // but using getBoundingClientRect to get a sub-pixel-accurate\n // result.\n function compensateForHScroll(display) {\n return display.scroller.getBoundingClientRect().left - display.sizer.getBoundingClientRect().left\n }\n\n // Returns a function that estimates the height of a line, to use as\n // first approximation until the line becomes visible (and is thus\n // properly measurable).\n function estimateHeight(cm) {\n var th = textHeight(cm.display), wrapping = cm.options.lineWrapping;\n var perLine = wrapping && Math.max(5, cm.display.scroller.clientWidth / charWidth(cm.display) - 3);\n return function (line) {\n if (lineIsHidden(cm.doc, line)) { return 0 }\n\n var widgetsHeight = 0;\n if (line.widgets) { for (var i = 0; i < line.widgets.length; i++) {\n if (line.widgets[i].height) { widgetsHeight += line.widgets[i].height; }\n } }\n\n if (wrapping)\n { return widgetsHeight + (Math.ceil(line.text.length / perLine) || 1) * th }\n else\n { return widgetsHeight + th }\n }\n }\n\n function estimateLineHeights(cm) {\n var doc = cm.doc, est = estimateHeight(cm);\n doc.iter(function (line) {\n var estHeight = est(line);\n if (estHeight != line.height) { updateLineHeight(line, estHeight); }\n });\n }\n\n // Given a mouse event, find the corresponding position. If liberal\n // is false, it checks whether a gutter or scrollbar was clicked,\n // and returns null if it was. forRect is used by rectangular\n // selections, and tries to estimate a character position even for\n // coordinates beyond the right of the text.\n function posFromMouse(cm, e, liberal, forRect) {\n var display = cm.display;\n if (!liberal && e_target(e).getAttribute(\"cm-not-content\") == \"true\") { return null }\n\n var x, y, space = display.lineSpace.getBoundingClientRect();\n // Fails unpredictably on IE[67] when mouse is dragged around quickly.\n try { x = e.clientX - space.left; y = e.clientY - space.top; }\n catch (e$1) { return null }\n var coords = coordsChar(cm, x, y), line;\n if (forRect && coords.xRel > 0 && (line = getLine(cm.doc, coords.line).text).length == coords.ch) {\n var colDiff = countColumn(line, line.length, cm.options.tabSize) - line.length;\n coords = Pos(coords.line, Math.max(0, Math.round((x - paddingH(cm.display).left) / charWidth(cm.display)) - colDiff));\n }\n return coords\n }\n\n // Find the view element corresponding to a given line. Return null\n // when the line isn't visible.\n function findViewIndex(cm, n) {\n if (n >= cm.display.viewTo) { return null }\n n -= cm.display.viewFrom;\n if (n < 0) { return null }\n var view = cm.display.view;\n for (var i = 0; i < view.length; i++) {\n n -= view[i].size;\n if (n < 0) { return i }\n }\n }\n\n // Updates the display.view data structure for a given change to the\n // document. From and to are in pre-change coordinates. Lendiff is\n // the amount of lines added or subtracted by the change. This is\n // used for changes that span multiple lines, or change the way\n // lines are divided into visual lines. regLineChange (below)\n // registers single-line changes.\n function regChange(cm, from, to, lendiff) {\n if (from == null) { from = cm.doc.first; }\n if (to == null) { to = cm.doc.first + cm.doc.size; }\n if (!lendiff) { lendiff = 0; }\n\n var display = cm.display;\n if (lendiff && to < display.viewTo &&\n (display.updateLineNumbers == null || display.updateLineNumbers > from))\n { display.updateLineNumbers = from; }\n\n cm.curOp.viewChanged = true;\n\n if (from >= display.viewTo) { // Change after\n if (sawCollapsedSpans && visualLineNo(cm.doc, from) < display.viewTo)\n { resetView(cm); }\n } else if (to <= display.viewFrom) { // Change before\n if (sawCollapsedSpans && visualLineEndNo(cm.doc, to + lendiff) > display.viewFrom) {\n resetView(cm);\n } else {\n display.viewFrom += lendiff;\n display.viewTo += lendiff;\n }\n } else if (from <= display.viewFrom && to >= display.viewTo) { // Full overlap\n resetView(cm);\n } else if (from <= display.viewFrom) { // Top overlap\n var cut = viewCuttingPoint(cm, to, to + lendiff, 1);\n if (cut) {\n display.view = display.view.slice(cut.index);\n display.viewFrom = cut.lineN;\n display.viewTo += lendiff;\n } else {\n resetView(cm);\n }\n } else if (to >= display.viewTo) { // Bottom overlap\n var cut$1 = viewCuttingPoint(cm, from, from, -1);\n if (cut$1) {\n display.view = display.view.slice(0, cut$1.index);\n display.viewTo = cut$1.lineN;\n } else {\n resetView(cm);\n }\n } else { // Gap in the middle\n var cutTop = viewCuttingPoint(cm, from, from, -1);\n var cutBot = viewCuttingPoint(cm, to, to + lendiff, 1);\n if (cutTop && cutBot) {\n display.view = display.view.slice(0, cutTop.index)\n .concat(buildViewArray(cm, cutTop.lineN, cutBot.lineN))\n .concat(display.view.slice(cutBot.index));\n display.viewTo += lendiff;\n } else {\n resetView(cm);\n }\n }\n\n var ext = display.externalMeasured;\n if (ext) {\n if (to < ext.lineN)\n { ext.lineN += lendiff; }\n else if (from < ext.lineN + ext.size)\n { display.externalMeasured = null; }\n }\n }\n\n // Register a change to a single line. Type must be one of \"text\",\n // \"gutter\", \"class\", \"widget\"\n function regLineChange(cm, line, type) {\n cm.curOp.viewChanged = true;\n var display = cm.display, ext = cm.display.externalMeasured;\n if (ext && line >= ext.lineN && line < ext.lineN + ext.size)\n { display.externalMeasured = null; }\n\n if (line < display.viewFrom || line >= display.viewTo) { return }\n var lineView = display.view[findViewIndex(cm, line)];\n if (lineView.node == null) { return }\n var arr = lineView.changes || (lineView.changes = []);\n if (indexOf(arr, type) == -1) { arr.push(type); }\n }\n\n // Clear the view.\n function resetView(cm) {\n cm.display.viewFrom = cm.display.viewTo = cm.doc.first;\n cm.display.view = [];\n cm.display.viewOffset = 0;\n }\n\n function viewCuttingPoint(cm, oldN, newN, dir) {\n var index = findViewIndex(cm, oldN), diff, view = cm.display.view;\n if (!sawCollapsedSpans || newN == cm.doc.first + cm.doc.size)\n { return {index: index, lineN: newN} }\n var n = cm.display.viewFrom;\n for (var i = 0; i < index; i++)\n { n += view[i].size; }\n if (n != oldN) {\n if (dir > 0) {\n if (index == view.length - 1) { return null }\n diff = (n + view[index].size) - oldN;\n index++;\n } else {\n diff = n - oldN;\n }\n oldN += diff; newN += diff;\n }\n while (visualLineNo(cm.doc, newN) != newN) {\n if (index == (dir < 0 ? 0 : view.length - 1)) { return null }\n newN += dir * view[index - (dir < 0 ? 1 : 0)].size;\n index += dir;\n }\n return {index: index, lineN: newN}\n }\n\n // Force the view to cover a given range, adding empty view element\n // or clipping off existing ones as needed.\n function adjustView(cm, from, to) {\n var display = cm.display, view = display.view;\n if (view.length == 0 || from >= display.viewTo || to <= display.viewFrom) {\n display.view = buildViewArray(cm, from, to);\n display.viewFrom = from;\n } else {\n if (display.viewFrom > from)\n { display.view = buildViewArray(cm, from, display.viewFrom).concat(display.view); }\n else if (display.viewFrom < from)\n { display.view = display.view.slice(findViewIndex(cm, from)); }\n display.viewFrom = from;\n if (display.viewTo < to)\n { display.view = display.view.concat(buildViewArray(cm, display.viewTo, to)); }\n else if (display.viewTo > to)\n { display.view = display.view.slice(0, findViewIndex(cm, to)); }\n }\n display.viewTo = to;\n }\n\n // Count the number of lines in the view whose DOM representation is\n // out of date (or nonexistent).\n function countDirtyView(cm) {\n var view = cm.display.view, dirty = 0;\n for (var i = 0; i < view.length; i++) {\n var lineView = view[i];\n if (!lineView.hidden && (!lineView.node || lineView.changes)) { ++dirty; }\n }\n return dirty\n }\n\n function updateSelection(cm) {\n cm.display.input.showSelection(cm.display.input.prepareSelection());\n }\n\n function prepareSelection(cm, primary) {\n if ( primary === void 0 ) primary = true;\n\n var doc = cm.doc, result = {};\n var curFragment = result.cursors = document.createDocumentFragment();\n var selFragment = result.selection = document.createDocumentFragment();\n\n var customCursor = cm.options.$customCursor;\n if (customCursor) { primary = true; }\n for (var i = 0; i < doc.sel.ranges.length; i++) {\n if (!primary && i == doc.sel.primIndex) { continue }\n var range = doc.sel.ranges[i];\n if (range.from().line >= cm.display.viewTo || range.to().line < cm.display.viewFrom) { continue }\n var collapsed = range.empty();\n if (customCursor) {\n var head = customCursor(cm, range);\n if (head) { drawSelectionCursor(cm, head, curFragment); }\n } else if (collapsed || cm.options.showCursorWhenSelecting) {\n drawSelectionCursor(cm, range.head, curFragment);\n }\n if (!collapsed)\n { drawSelectionRange(cm, range, selFragment); }\n }\n return result\n }\n\n // Draws a cursor for the given range\n function drawSelectionCursor(cm, head, output) {\n var pos = cursorCoords(cm, head, \"div\", null, null, !cm.options.singleCursorHeightPerLine);\n\n var cursor = output.appendChild(elt(\"div\", \"\\u00a0\", \"CodeMirror-cursor\"));\n cursor.style.left = pos.left + \"px\";\n cursor.style.top = pos.top + \"px\";\n cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + \"px\";\n\n if (/\\bcm-fat-cursor\\b/.test(cm.getWrapperElement().className)) {\n var charPos = charCoords(cm, head, \"div\", null, null);\n var width = charPos.right - charPos.left;\n cursor.style.width = (width > 0 ? width : cm.defaultCharWidth()) + \"px\";\n }\n\n if (pos.other) {\n // Secondary cursor, shown when on a 'jump' in bi-directional text\n var otherCursor = output.appendChild(elt(\"div\", \"\\u00a0\", \"CodeMirror-cursor CodeMirror-secondarycursor\"));\n otherCursor.style.display = \"\";\n otherCursor.style.left = pos.other.left + \"px\";\n otherCursor.style.top = pos.other.top + \"px\";\n otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + \"px\";\n }\n }\n\n function cmpCoords(a, b) { return a.top - b.top || a.left - b.left }\n\n // Draws the given range as a highlighted selection\n function drawSelectionRange(cm, range, output) {\n var display = cm.display, doc = cm.doc;\n var fragment = document.createDocumentFragment();\n var padding = paddingH(cm.display), leftSide = padding.left;\n var rightSide = Math.max(display.sizerWidth, displayWidth(cm) - display.sizer.offsetLeft) - padding.right;\n var docLTR = doc.direction == \"ltr\";\n\n function add(left, top, width, bottom) {\n if (top < 0) { top = 0; }\n top = Math.round(top);\n bottom = Math.round(bottom);\n fragment.appendChild(elt(\"div\", null, \"CodeMirror-selected\", (\"position: absolute; left: \" + left + \"px;\\n top: \" + top + \"px; width: \" + (width == null ? rightSide - left : width) + \"px;\\n height: \" + (bottom - top) + \"px\")));\n }\n\n function drawForLine(line, fromArg, toArg) {\n var lineObj = getLine(doc, line);\n var lineLen = lineObj.text.length;\n var start, end;\n function coords(ch, bias) {\n return charCoords(cm, Pos(line, ch), \"div\", lineObj, bias)\n }\n\n function wrapX(pos, dir, side) {\n var extent = wrappedLineExtentChar(cm, lineObj, null, pos);\n var prop = (dir == \"ltr\") == (side == \"after\") ? \"left\" : \"right\";\n var ch = side == \"after\" ? extent.begin : extent.end - (/\\s/.test(lineObj.text.charAt(extent.end - 1)) ? 2 : 1);\n return coords(ch, prop)[prop]\n }\n\n var order = getOrder(lineObj, doc.direction);\n iterateBidiSections(order, fromArg || 0, toArg == null ? lineLen : toArg, function (from, to, dir, i) {\n var ltr = dir == \"ltr\";\n var fromPos = coords(from, ltr ? \"left\" : \"right\");\n var toPos = coords(to - 1, ltr ? \"right\" : \"left\");\n\n var openStart = fromArg == null && from == 0, openEnd = toArg == null && to == lineLen;\n var first = i == 0, last = !order || i == order.length - 1;\n if (toPos.top - fromPos.top <= 3) { // Single line\n var openLeft = (docLTR ? openStart : openEnd) && first;\n var openRight = (docLTR ? openEnd : openStart) && last;\n var left = openLeft ? leftSide : (ltr ? fromPos : toPos).left;\n var right = openRight ? rightSide : (ltr ? toPos : fromPos).right;\n add(left, fromPos.top, right - left, fromPos.bottom);\n } else { // Multiple lines\n var topLeft, topRight, botLeft, botRight;\n if (ltr) {\n topLeft = docLTR && openStart && first ? leftSide : fromPos.left;\n topRight = docLTR ? rightSide : wrapX(from, dir, \"before\");\n botLeft = docLTR ? leftSide : wrapX(to, dir, \"after\");\n botRight = docLTR && openEnd && last ? rightSide : toPos.right;\n } else {\n topLeft = !docLTR ? leftSide : wrapX(from, dir, \"before\");\n topRight = !docLTR && openStart && first ? rightSide : fromPos.right;\n botLeft = !docLTR && openEnd && last ? leftSide : toPos.left;\n botRight = !docLTR ? rightSide : wrapX(to, dir, \"after\");\n }\n add(topLeft, fromPos.top, topRight - topLeft, fromPos.bottom);\n if (fromPos.bottom < toPos.top) { add(leftSide, fromPos.bottom, null, toPos.top); }\n add(botLeft, toPos.top, botRight - botLeft, toPos.bottom);\n }\n\n if (!start || cmpCoords(fromPos, start) < 0) { start = fromPos; }\n if (cmpCoords(toPos, start) < 0) { start = toPos; }\n if (!end || cmpCoords(fromPos, end) < 0) { end = fromPos; }\n if (cmpCoords(toPos, end) < 0) { end = toPos; }\n });\n return {start: start, end: end}\n }\n\n var sFrom = range.from(), sTo = range.to();\n if (sFrom.line == sTo.line) {\n drawForLine(sFrom.line, sFrom.ch, sTo.ch);\n } else {\n var fromLine = getLine(doc, sFrom.line), toLine = getLine(doc, sTo.line);\n var singleVLine = visualLine(fromLine) == visualLine(toLine);\n var leftEnd = drawForLine(sFrom.line, sFrom.ch, singleVLine ? fromLine.text.length + 1 : null).end;\n var rightStart = drawForLine(sTo.line, singleVLine ? 0 : null, sTo.ch).start;\n if (singleVLine) {\n if (leftEnd.top < rightStart.top - 2) {\n add(leftEnd.right, leftEnd.top, null, leftEnd.bottom);\n add(leftSide, rightStart.top, rightStart.left, rightStart.bottom);\n } else {\n add(leftEnd.right, leftEnd.top, rightStart.left - leftEnd.right, leftEnd.bottom);\n }\n }\n if (leftEnd.bottom < rightStart.top)\n { add(leftSide, leftEnd.bottom, null, rightStart.top); }\n }\n\n output.appendChild(fragment);\n }\n\n // Cursor-blinking\n function restartBlink(cm) {\n if (!cm.state.focused) { return }\n var display = cm.display;\n clearInterval(display.blinker);\n var on = true;\n display.cursorDiv.style.visibility = \"\";\n if (cm.options.cursorBlinkRate > 0)\n { display.blinker = setInterval(function () {\n if (!cm.hasFocus()) { onBlur(cm); }\n display.cursorDiv.style.visibility = (on = !on) ? \"\" : \"hidden\";\n }, cm.options.cursorBlinkRate); }\n else if (cm.options.cursorBlinkRate < 0)\n { display.cursorDiv.style.visibility = \"hidden\"; }\n }\n\n function ensureFocus(cm) {\n if (!cm.hasFocus()) {\n cm.display.input.focus();\n if (!cm.state.focused) { onFocus(cm); }\n }\n }\n\n function delayBlurEvent(cm) {\n cm.state.delayingBlurEvent = true;\n setTimeout(function () { if (cm.state.delayingBlurEvent) {\n cm.state.delayingBlurEvent = false;\n if (cm.state.focused) { onBlur(cm); }\n } }, 100);\n }\n\n function onFocus(cm, e) {\n if (cm.state.delayingBlurEvent && !cm.state.draggingText) { cm.state.delayingBlurEvent = false; }\n\n if (cm.options.readOnly == \"nocursor\") { return }\n if (!cm.state.focused) {\n signal(cm, \"focus\", cm, e);\n cm.state.focused = true;\n addClass(cm.display.wrapper, \"CodeMirror-focused\");\n // This test prevents this from firing when a context\n // menu is closed (since the input reset would kill the\n // select-all detection hack)\n if (!cm.curOp && cm.display.selForContextMenu != cm.doc.sel) {\n cm.display.input.reset();\n if (webkit) { setTimeout(function () { return cm.display.input.reset(true); }, 20); } // Issue #1730\n }\n cm.display.input.receivedFocus();\n }\n restartBlink(cm);\n }\n function onBlur(cm, e) {\n if (cm.state.delayingBlurEvent) { return }\n\n if (cm.state.focused) {\n signal(cm, \"blur\", cm, e);\n cm.state.focused = false;\n rmClass(cm.display.wrapper, \"CodeMirror-focused\");\n }\n clearInterval(cm.display.blinker);\n setTimeout(function () { if (!cm.state.focused) { cm.display.shift = false; } }, 150);\n }\n\n // Read the actual heights of the rendered lines, and update their\n // stored heights to match.\n function updateHeightsInViewport(cm) {\n var display = cm.display;\n var prevBottom = display.lineDiv.offsetTop;\n var viewTop = Math.max(0, display.scroller.getBoundingClientRect().top);\n var oldHeight = display.lineDiv.getBoundingClientRect().top;\n var mustScroll = 0;\n for (var i = 0; i < display.view.length; i++) {\n var cur = display.view[i], wrapping = cm.options.lineWrapping;\n var height = (void 0), width = 0;\n if (cur.hidden) { continue }\n oldHeight += cur.line.height;\n if (ie && ie_version < 8) {\n var bot = cur.node.offsetTop + cur.node.offsetHeight;\n height = bot - prevBottom;\n prevBottom = bot;\n } else {\n var box = cur.node.getBoundingClientRect();\n height = box.bottom - box.top;\n // Check that lines don't extend past the right of the current\n // editor width\n if (!wrapping && cur.text.firstChild)\n { width = cur.text.firstChild.getBoundingClientRect().right - box.left - 1; }\n }\n var diff = cur.line.height - height;\n if (diff > .005 || diff < -.005) {\n if (oldHeight < viewTop) { mustScroll -= diff; }\n updateLineHeight(cur.line, height);\n updateWidgetHeight(cur.line);\n if (cur.rest) { for (var j = 0; j < cur.rest.length; j++)\n { updateWidgetHeight(cur.rest[j]); } }\n }\n if (width > cm.display.sizerWidth) {\n var chWidth = Math.ceil(width / charWidth(cm.display));\n if (chWidth > cm.display.maxLineLength) {\n cm.display.maxLineLength = chWidth;\n cm.display.maxLine = cur.line;\n cm.display.maxLineChanged = true;\n }\n }\n }\n if (Math.abs(mustScroll) > 2) { display.scroller.scrollTop += mustScroll; }\n }\n\n // Read and store the height of line widgets associated with the\n // given line.\n function updateWidgetHeight(line) {\n if (line.widgets) { for (var i = 0; i < line.widgets.length; ++i) {\n var w = line.widgets[i], parent = w.node.parentNode;\n if (parent) { w.height = parent.offsetHeight; }\n } }\n }\n\n // Compute the lines that are visible in a given viewport (defaults\n // the current scroll position). viewport may contain top,\n // height, and ensure (see op.scrollToPos) properties.\n function visibleLines(display, doc, viewport) {\n var top = viewport && viewport.top != null ? Math.max(0, viewport.top) : display.scroller.scrollTop;\n top = Math.floor(top - paddingTop(display));\n var bottom = viewport && viewport.bottom != null ? viewport.bottom : top + display.wrapper.clientHeight;\n\n var from = lineAtHeight(doc, top), to = lineAtHeight(doc, bottom);\n // Ensure is a {from: {line, ch}, to: {line, ch}} object, and\n // forces those lines into the viewport (if possible).\n if (viewport && viewport.ensure) {\n var ensureFrom = viewport.ensure.from.line, ensureTo = viewport.ensure.to.line;\n if (ensureFrom < from) {\n from = ensureFrom;\n to = lineAtHeight(doc, heightAtLine(getLine(doc, ensureFrom)) + display.wrapper.clientHeight);\n } else if (Math.min(ensureTo, doc.lastLine()) >= to) {\n from = lineAtHeight(doc, heightAtLine(getLine(doc, ensureTo)) - display.wrapper.clientHeight);\n to = ensureTo;\n }\n }\n return {from: from, to: Math.max(to, from + 1)}\n }\n\n // SCROLLING THINGS INTO VIEW\n\n // If an editor sits on the top or bottom of the window, partially\n // scrolled out of view, this ensures that the cursor is visible.\n function maybeScrollWindow(cm, rect) {\n if (signalDOMEvent(cm, \"scrollCursorIntoView\")) { return }\n\n var display = cm.display, box = display.sizer.getBoundingClientRect(), doScroll = null;\n var doc = display.wrapper.ownerDocument;\n if (rect.top + box.top < 0) { doScroll = true; }\n else if (rect.bottom + box.top > (doc.defaultView.innerHeight || doc.documentElement.clientHeight)) { doScroll = false; }\n if (doScroll != null && !phantom) {\n var scrollNode = elt(\"div\", \"\\u200b\", null, (\"position: absolute;\\n top: \" + (rect.top - display.viewOffset - paddingTop(cm.display)) + \"px;\\n height: \" + (rect.bottom - rect.top + scrollGap(cm) + display.barHeight) + \"px;\\n left: \" + (rect.left) + \"px; width: \" + (Math.max(2, rect.right - rect.left)) + \"px;\"));\n cm.display.lineSpace.appendChild(scrollNode);\n scrollNode.scrollIntoView(doScroll);\n cm.display.lineSpace.removeChild(scrollNode);\n }\n }\n\n // Scroll a given position into view (immediately), verifying that\n // it actually became visible (as line heights are accurately\n // measured, the position of something may 'drift' during drawing).\n function scrollPosIntoView(cm, pos, end, margin) {\n if (margin == null) { margin = 0; }\n var rect;\n if (!cm.options.lineWrapping && pos == end) {\n // Set pos and end to the cursor positions around the character pos sticks to\n // If pos.sticky == \"before\", that is around pos.ch - 1, otherwise around pos.ch\n // If pos == Pos(_, 0, \"before\"), pos and end are unchanged\n end = pos.sticky == \"before\" ? Pos(pos.line, pos.ch + 1, \"before\") : pos;\n pos = pos.ch ? Pos(pos.line, pos.sticky == \"before\" ? pos.ch - 1 : pos.ch, \"after\") : pos;\n }\n for (var limit = 0; limit < 5; limit++) {\n var changed = false;\n var coords = cursorCoords(cm, pos);\n var endCoords = !end || end == pos ? coords : cursorCoords(cm, end);\n rect = {left: Math.min(coords.left, endCoords.left),\n top: Math.min(coords.top, endCoords.top) - margin,\n right: Math.max(coords.left, endCoords.left),\n bottom: Math.max(coords.bottom, endCoords.bottom) + margin};\n var scrollPos = calculateScrollPos(cm, rect);\n var startTop = cm.doc.scrollTop, startLeft = cm.doc.scrollLeft;\n if (scrollPos.scrollTop != null) {\n updateScrollTop(cm, scrollPos.scrollTop);\n if (Math.abs(cm.doc.scrollTop - startTop) > 1) { changed = true; }\n }\n if (scrollPos.scrollLeft != null) {\n setScrollLeft(cm, scrollPos.scrollLeft);\n if (Math.abs(cm.doc.scrollLeft - startLeft) > 1) { changed = true; }\n }\n if (!changed) { break }\n }\n return rect\n }\n\n // Scroll a given set of coordinates into view (immediately).\n function scrollIntoView(cm, rect) {\n var scrollPos = calculateScrollPos(cm, rect);\n if (scrollPos.scrollTop != null) { updateScrollTop(cm, scrollPos.scrollTop); }\n if (scrollPos.scrollLeft != null) { setScrollLeft(cm, scrollPos.scrollLeft); }\n }\n\n // Calculate a new scroll position needed to scroll the given\n // rectangle into view. Returns an object with scrollTop and\n // scrollLeft properties. When these are undefined, the\n // vertical/horizontal position does not need to be adjusted.\n function calculateScrollPos(cm, rect) {\n var display = cm.display, snapMargin = textHeight(cm.display);\n if (rect.top < 0) { rect.top = 0; }\n var screentop = cm.curOp && cm.curOp.scrollTop != null ? cm.curOp.scrollTop : display.scroller.scrollTop;\n var screen = displayHeight(cm), result = {};\n if (rect.bottom - rect.top > screen) { rect.bottom = rect.top + screen; }\n var docBottom = cm.doc.height + paddingVert(display);\n var atTop = rect.top < snapMargin, atBottom = rect.bottom > docBottom - snapMargin;\n if (rect.top < screentop) {\n result.scrollTop = atTop ? 0 : rect.top;\n } else if (rect.bottom > screentop + screen) {\n var newTop = Math.min(rect.top, (atBottom ? docBottom : rect.bottom) - screen);\n if (newTop != screentop) { result.scrollTop = newTop; }\n }\n\n var gutterSpace = cm.options.fixedGutter ? 0 : display.gutters.offsetWidth;\n var screenleft = cm.curOp && cm.curOp.scrollLeft != null ? cm.curOp.scrollLeft : display.scroller.scrollLeft - gutterSpace;\n var screenw = displayWidth(cm) - display.gutters.offsetWidth;\n var tooWide = rect.right - rect.left > screenw;\n if (tooWide) { rect.right = rect.left + screenw; }\n if (rect.left < 10)\n { result.scrollLeft = 0; }\n else if (rect.left < screenleft)\n { result.scrollLeft = Math.max(0, rect.left + gutterSpace - (tooWide ? 0 : 10)); }\n else if (rect.right > screenw + screenleft - 3)\n { result.scrollLeft = rect.right + (tooWide ? 0 : 10) - screenw; }\n return result\n }\n\n // Store a relative adjustment to the scroll position in the current\n // operation (to be applied when the operation finishes).\n function addToScrollTop(cm, top) {\n if (top == null) { return }\n resolveScrollToPos(cm);\n cm.curOp.scrollTop = (cm.curOp.scrollTop == null ? cm.doc.scrollTop : cm.curOp.scrollTop) + top;\n }\n\n // Make sure that at the end of the operation the current cursor is\n // shown.\n function ensureCursorVisible(cm) {\n resolveScrollToPos(cm);\n var cur = cm.getCursor();\n cm.curOp.scrollToPos = {from: cur, to: cur, margin: cm.options.cursorScrollMargin};\n }\n\n function scrollToCoords(cm, x, y) {\n if (x != null || y != null) { resolveScrollToPos(cm); }\n if (x != null) { cm.curOp.scrollLeft = x; }\n if (y != null) { cm.curOp.scrollTop = y; }\n }\n\n function scrollToRange(cm, range) {\n resolveScrollToPos(cm);\n cm.curOp.scrollToPos = range;\n }\n\n // When an operation has its scrollToPos property set, and another\n // scroll action is applied before the end of the operation, this\n // 'simulates' scrolling that position into view in a cheap way, so\n // that the effect of intermediate scroll commands is not ignored.\n function resolveScrollToPos(cm) {\n var range = cm.curOp.scrollToPos;\n if (range) {\n cm.curOp.scrollToPos = null;\n var from = estimateCoords(cm, range.from), to = estimateCoords(cm, range.to);\n scrollToCoordsRange(cm, from, to, range.margin);\n }\n }\n\n function scrollToCoordsRange(cm, from, to, margin) {\n var sPos = calculateScrollPos(cm, {\n left: Math.min(from.left, to.left),\n top: Math.min(from.top, to.top) - margin,\n right: Math.max(from.right, to.right),\n bottom: Math.max(from.bottom, to.bottom) + margin\n });\n scrollToCoords(cm, sPos.scrollLeft, sPos.scrollTop);\n }\n\n // Sync the scrollable area and scrollbars, ensure the viewport\n // covers the visible area.\n function updateScrollTop(cm, val) {\n if (Math.abs(cm.doc.scrollTop - val) < 2) { return }\n if (!gecko) { updateDisplaySimple(cm, {top: val}); }\n setScrollTop(cm, val, true);\n if (gecko) { updateDisplaySimple(cm); }\n startWorker(cm, 100);\n }\n\n function setScrollTop(cm, val, forceScroll) {\n val = Math.max(0, Math.min(cm.display.scroller.scrollHeight - cm.display.scroller.clientHeight, val));\n if (cm.display.scroller.scrollTop == val && !forceScroll) { return }\n cm.doc.scrollTop = val;\n cm.display.scrollbars.setScrollTop(val);\n if (cm.display.scroller.scrollTop != val) { cm.display.scroller.scrollTop = val; }\n }\n\n // Sync scroller and scrollbar, ensure the gutter elements are\n // aligned.\n function setScrollLeft(cm, val, isScroller, forceScroll) {\n val = Math.max(0, Math.min(val, cm.display.scroller.scrollWidth - cm.display.scroller.clientWidth));\n if ((isScroller ? val == cm.doc.scrollLeft : Math.abs(cm.doc.scrollLeft - val) < 2) && !forceScroll) { return }\n cm.doc.scrollLeft = val;\n alignHorizontally(cm);\n if (cm.display.scroller.scrollLeft != val) { cm.display.scroller.scrollLeft = val; }\n cm.display.scrollbars.setScrollLeft(val);\n }\n\n // SCROLLBARS\n\n // Prepare DOM reads needed to update the scrollbars. Done in one\n // shot to minimize update/measure roundtrips.\n function measureForScrollbars(cm) {\n var d = cm.display, gutterW = d.gutters.offsetWidth;\n var docH = Math.round(cm.doc.height + paddingVert(cm.display));\n return {\n clientHeight: d.scroller.clientHeight,\n viewHeight: d.wrapper.clientHeight,\n scrollWidth: d.scroller.scrollWidth, clientWidth: d.scroller.clientWidth,\n viewWidth: d.wrapper.clientWidth,\n barLeft: cm.options.fixedGutter ? gutterW : 0,\n docHeight: docH,\n scrollHeight: docH + scrollGap(cm) + d.barHeight,\n nativeBarWidth: d.nativeBarWidth,\n gutterWidth: gutterW\n }\n }\n\n var NativeScrollbars = function(place, scroll, cm) {\n this.cm = cm;\n var vert = this.vert = elt(\"div\", [elt(\"div\", null, null, \"min-width: 1px\")], \"CodeMirror-vscrollbar\");\n var horiz = this.horiz = elt(\"div\", [elt(\"div\", null, null, \"height: 100%; min-height: 1px\")], \"CodeMirror-hscrollbar\");\n vert.tabIndex = horiz.tabIndex = -1;\n place(vert); place(horiz);\n\n on(vert, \"scroll\", function () {\n if (vert.clientHeight) { scroll(vert.scrollTop, \"vertical\"); }\n });\n on(horiz, \"scroll\", function () {\n if (horiz.clientWidth) { scroll(horiz.scrollLeft, \"horizontal\"); }\n });\n\n this.checkedZeroWidth = false;\n // Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8).\n if (ie && ie_version < 8) { this.horiz.style.minHeight = this.vert.style.minWidth = \"18px\"; }\n };\n\n NativeScrollbars.prototype.update = function (measure) {\n var needsH = measure.scrollWidth > measure.clientWidth + 1;\n var needsV = measure.scrollHeight > measure.clientHeight + 1;\n var sWidth = measure.nativeBarWidth;\n\n if (needsV) {\n this.vert.style.display = \"block\";\n this.vert.style.bottom = needsH ? sWidth + \"px\" : \"0\";\n var totalHeight = measure.viewHeight - (needsH ? sWidth : 0);\n // A bug in IE8 can cause this value to be negative, so guard it.\n this.vert.firstChild.style.height =\n Math.max(0, measure.scrollHeight - measure.clientHeight + totalHeight) + \"px\";\n } else {\n this.vert.scrollTop = 0;\n this.vert.style.display = \"\";\n this.vert.firstChild.style.height = \"0\";\n }\n\n if (needsH) {\n this.horiz.style.display = \"block\";\n this.horiz.style.right = needsV ? sWidth + \"px\" : \"0\";\n this.horiz.style.left = measure.barLeft + \"px\";\n var totalWidth = measure.viewWidth - measure.barLeft - (needsV ? sWidth : 0);\n this.horiz.firstChild.style.width =\n Math.max(0, measure.scrollWidth - measure.clientWidth + totalWidth) + \"px\";\n } else {\n this.horiz.style.display = \"\";\n this.horiz.firstChild.style.width = \"0\";\n }\n\n if (!this.checkedZeroWidth && measure.clientHeight > 0) {\n if (sWidth == 0) { this.zeroWidthHack(); }\n this.checkedZeroWidth = true;\n }\n\n return {right: needsV ? sWidth : 0, bottom: needsH ? sWidth : 0}\n };\n\n NativeScrollbars.prototype.setScrollLeft = function (pos) {\n if (this.horiz.scrollLeft != pos) { this.horiz.scrollLeft = pos; }\n if (this.disableHoriz) { this.enableZeroWidthBar(this.horiz, this.disableHoriz, \"horiz\"); }\n };\n\n NativeScrollbars.prototype.setScrollTop = function (pos) {\n if (this.vert.scrollTop != pos) { this.vert.scrollTop = pos; }\n if (this.disableVert) { this.enableZeroWidthBar(this.vert, this.disableVert, \"vert\"); }\n };\n\n NativeScrollbars.prototype.zeroWidthHack = function () {\n var w = mac && !mac_geMountainLion ? \"12px\" : \"18px\";\n this.horiz.style.height = this.vert.style.width = w;\n this.horiz.style.visibility = this.vert.style.visibility = \"hidden\";\n this.disableHoriz = new Delayed;\n this.disableVert = new Delayed;\n };\n\n NativeScrollbars.prototype.enableZeroWidthBar = function (bar, delay, type) {\n bar.style.visibility = \"\";\n function maybeDisable() {\n // To find out whether the scrollbar is still visible, we\n // check whether the element under the pixel in the bottom\n // right corner of the scrollbar box is the scrollbar box\n // itself (when the bar is still visible) or its filler child\n // (when the bar is hidden). If it is still visible, we keep\n // it enabled, if it's hidden, we disable pointer events.\n var box = bar.getBoundingClientRect();\n var elt = type == \"vert\" ? document.elementFromPoint(box.right - 1, (box.top + box.bottom) / 2)\n : document.elementFromPoint((box.right + box.left) / 2, box.bottom - 1);\n if (elt != bar) { bar.style.visibility = \"hidden\"; }\n else { delay.set(1000, maybeDisable); }\n }\n delay.set(1000, maybeDisable);\n };\n\n NativeScrollbars.prototype.clear = function () {\n var parent = this.horiz.parentNode;\n parent.removeChild(this.horiz);\n parent.removeChild(this.vert);\n };\n\n var NullScrollbars = function () {};\n\n NullScrollbars.prototype.update = function () { return {bottom: 0, right: 0} };\n NullScrollbars.prototype.setScrollLeft = function () {};\n NullScrollbars.prototype.setScrollTop = function () {};\n NullScrollbars.prototype.clear = function () {};\n\n function updateScrollbars(cm, measure) {\n if (!measure) { measure = measureForScrollbars(cm); }\n var startWidth = cm.display.barWidth, startHeight = cm.display.barHeight;\n updateScrollbarsInner(cm, measure);\n for (var i = 0; i < 4 && startWidth != cm.display.barWidth || startHeight != cm.display.barHeight; i++) {\n if (startWidth != cm.display.barWidth && cm.options.lineWrapping)\n { updateHeightsInViewport(cm); }\n updateScrollbarsInner(cm, measureForScrollbars(cm));\n startWidth = cm.display.barWidth; startHeight = cm.display.barHeight;\n }\n }\n\n // Re-synchronize the fake scrollbars with the actual size of the\n // content.\n function updateScrollbarsInner(cm, measure) {\n var d = cm.display;\n var sizes = d.scrollbars.update(measure);\n\n d.sizer.style.paddingRight = (d.barWidth = sizes.right) + \"px\";\n d.sizer.style.paddingBottom = (d.barHeight = sizes.bottom) + \"px\";\n d.heightForcer.style.borderBottom = sizes.bottom + \"px solid transparent\";\n\n if (sizes.right && sizes.bottom) {\n d.scrollbarFiller.style.display = \"block\";\n d.scrollbarFiller.style.height = sizes.bottom + \"px\";\n d.scrollbarFiller.style.width = sizes.right + \"px\";\n } else { d.scrollbarFiller.style.display = \"\"; }\n if (sizes.bottom && cm.options.coverGutterNextToScrollbar && cm.options.fixedGutter) {\n d.gutterFiller.style.display = \"block\";\n d.gutterFiller.style.height = sizes.bottom + \"px\";\n d.gutterFiller.style.width = measure.gutterWidth + \"px\";\n } else { d.gutterFiller.style.display = \"\"; }\n }\n\n var scrollbarModel = {\"native\": NativeScrollbars, \"null\": NullScrollbars};\n\n function initScrollbars(cm) {\n if (cm.display.scrollbars) {\n cm.display.scrollbars.clear();\n if (cm.display.scrollbars.addClass)\n { rmClass(cm.display.wrapper, cm.display.scrollbars.addClass); }\n }\n\n cm.display.scrollbars = new scrollbarModel[cm.options.scrollbarStyle](function (node) {\n cm.display.wrapper.insertBefore(node, cm.display.scrollbarFiller);\n // Prevent clicks in the scrollbars from killing focus\n on(node, \"mousedown\", function () {\n if (cm.state.focused) { setTimeout(function () { return cm.display.input.focus(); }, 0); }\n });\n node.setAttribute(\"cm-not-content\", \"true\");\n }, function (pos, axis) {\n if (axis == \"horizontal\") { setScrollLeft(cm, pos); }\n else { updateScrollTop(cm, pos); }\n }, cm);\n if (cm.display.scrollbars.addClass)\n { addClass(cm.display.wrapper, cm.display.scrollbars.addClass); }\n }\n\n // Operations are used to wrap a series of changes to the editor\n // state in such a way that each change won't have to update the\n // cursor and display (which would be awkward, slow, and\n // error-prone). Instead, display updates are batched and then all\n // combined and executed at once.\n\n var nextOpId = 0;\n // Start a new operation.\n function startOperation(cm) {\n cm.curOp = {\n cm: cm,\n viewChanged: false, // Flag that indicates that lines might need to be redrawn\n startHeight: cm.doc.height, // Used to detect need to update scrollbar\n forceUpdate: false, // Used to force a redraw\n updateInput: 0, // Whether to reset the input textarea\n typing: false, // Whether this reset should be careful to leave existing text (for compositing)\n changeObjs: null, // Accumulated changes, for firing change events\n cursorActivityHandlers: null, // Set of handlers to fire cursorActivity on\n cursorActivityCalled: 0, // Tracks which cursorActivity handlers have been called already\n selectionChanged: false, // Whether the selection needs to be redrawn\n updateMaxLine: false, // Set when the widest line needs to be determined anew\n scrollLeft: null, scrollTop: null, // Intermediate scroll position, not pushed to DOM yet\n scrollToPos: null, // Used to scroll to a specific position\n focus: false,\n id: ++nextOpId, // Unique ID\n markArrays: null // Used by addMarkedSpan\n };\n pushOperation(cm.curOp);\n }\n\n // Finish an operation, updating the display and signalling delayed events\n function endOperation(cm) {\n var op = cm.curOp;\n if (op) { finishOperation(op, function (group) {\n for (var i = 0; i < group.ops.length; i++)\n { group.ops[i].cm.curOp = null; }\n endOperations(group);\n }); }\n }\n\n // The DOM updates done when an operation finishes are batched so\n // that the minimum number of relayouts are required.\n function endOperations(group) {\n var ops = group.ops;\n for (var i = 0; i < ops.length; i++) // Read DOM\n { endOperation_R1(ops[i]); }\n for (var i$1 = 0; i$1 < ops.length; i$1++) // Write DOM (maybe)\n { endOperation_W1(ops[i$1]); }\n for (var i$2 = 0; i$2 < ops.length; i$2++) // Read DOM\n { endOperation_R2(ops[i$2]); }\n for (var i$3 = 0; i$3 < ops.length; i$3++) // Write DOM (maybe)\n { endOperation_W2(ops[i$3]); }\n for (var i$4 = 0; i$4 < ops.length; i$4++) // Read DOM\n { endOperation_finish(ops[i$4]); }\n }\n\n function endOperation_R1(op) {\n var cm = op.cm, display = cm.display;\n maybeClipScrollbars(cm);\n if (op.updateMaxLine) { findMaxLine(cm); }\n\n op.mustUpdate = op.viewChanged || op.forceUpdate || op.scrollTop != null ||\n op.scrollToPos && (op.scrollToPos.from.line < display.viewFrom ||\n op.scrollToPos.to.line >= display.viewTo) ||\n display.maxLineChanged && cm.options.lineWrapping;\n op.update = op.mustUpdate &&\n new DisplayUpdate(cm, op.mustUpdate && {top: op.scrollTop, ensure: op.scrollToPos}, op.forceUpdate);\n }\n\n function endOperation_W1(op) {\n op.updatedDisplay = op.mustUpdate && updateDisplayIfNeeded(op.cm, op.update);\n }\n\n function endOperation_R2(op) {\n var cm = op.cm, display = cm.display;\n if (op.updatedDisplay) { updateHeightsInViewport(cm); }\n\n op.barMeasure = measureForScrollbars(cm);\n\n // If the max line changed since it was last measured, measure it,\n // and ensure the document's width matches it.\n // updateDisplay_W2 will use these properties to do the actual resizing\n if (display.maxLineChanged && !cm.options.lineWrapping) {\n op.adjustWidthTo = measureChar(cm, display.maxLine, display.maxLine.text.length).left + 3;\n cm.display.sizerWidth = op.adjustWidthTo;\n op.barMeasure.scrollWidth =\n Math.max(display.scroller.clientWidth, display.sizer.offsetLeft + op.adjustWidthTo + scrollGap(cm) + cm.display.barWidth);\n op.maxScrollLeft = Math.max(0, display.sizer.offsetLeft + op.adjustWidthTo - displayWidth(cm));\n }\n\n if (op.updatedDisplay || op.selectionChanged)\n { op.preparedSelection = display.input.prepareSelection(); }\n }\n\n function endOperation_W2(op) {\n var cm = op.cm;\n\n if (op.adjustWidthTo != null) {\n cm.display.sizer.style.minWidth = op.adjustWidthTo + \"px\";\n if (op.maxScrollLeft < cm.doc.scrollLeft)\n { setScrollLeft(cm, Math.min(cm.display.scroller.scrollLeft, op.maxScrollLeft), true); }\n cm.display.maxLineChanged = false;\n }\n\n var takeFocus = op.focus && op.focus == activeElt(root(cm));\n if (op.preparedSelection)\n { cm.display.input.showSelection(op.preparedSelection, takeFocus); }\n if (op.updatedDisplay || op.startHeight != cm.doc.height)\n { updateScrollbars(cm, op.barMeasure); }\n if (op.updatedDisplay)\n { setDocumentHeight(cm, op.barMeasure); }\n\n if (op.selectionChanged) { restartBlink(cm); }\n\n if (cm.state.focused && op.updateInput)\n { cm.display.input.reset(op.typing); }\n if (takeFocus) { ensureFocus(op.cm); }\n }\n\n function endOperation_finish(op) {\n var cm = op.cm, display = cm.display, doc = cm.doc;\n\n if (op.updatedDisplay) { postUpdateDisplay(cm, op.update); }\n\n // Abort mouse wheel delta measurement, when scrolling explicitly\n if (display.wheelStartX != null && (op.scrollTop != null || op.scrollLeft != null || op.scrollToPos))\n { display.wheelStartX = display.wheelStartY = null; }\n\n // Propagate the scroll position to the actual DOM scroller\n if (op.scrollTop != null) { setScrollTop(cm, op.scrollTop, op.forceScroll); }\n\n if (op.scrollLeft != null) { setScrollLeft(cm, op.scrollLeft, true, true); }\n // If we need to scroll a specific position into view, do so.\n if (op.scrollToPos) {\n var rect = scrollPosIntoView(cm, clipPos(doc, op.scrollToPos.from),\n clipPos(doc, op.scrollToPos.to), op.scrollToPos.margin);\n maybeScrollWindow(cm, rect);\n }\n\n // Fire events for markers that are hidden/unidden by editing or\n // undoing\n var hidden = op.maybeHiddenMarkers, unhidden = op.maybeUnhiddenMarkers;\n if (hidden) { for (var i = 0; i < hidden.length; ++i)\n { if (!hidden[i].lines.length) { signal(hidden[i], \"hide\"); } } }\n if (unhidden) { for (var i$1 = 0; i$1 < unhidden.length; ++i$1)\n { if (unhidden[i$1].lines.length) { signal(unhidden[i$1], \"unhide\"); } } }\n\n if (display.wrapper.offsetHeight)\n { doc.scrollTop = cm.display.scroller.scrollTop; }\n\n // Fire change events, and delayed event handlers\n if (op.changeObjs)\n { signal(cm, \"changes\", cm, op.changeObjs); }\n if (op.update)\n { op.update.finish(); }\n }\n\n // Run the given function in an operation\n function runInOp(cm, f) {\n if (cm.curOp) { return f() }\n startOperation(cm);\n try { return f() }\n finally { endOperation(cm); }\n }\n // Wraps a function in an operation. Returns the wrapped function.\n function operation(cm, f) {\n return function() {\n if (cm.curOp) { return f.apply(cm, arguments) }\n startOperation(cm);\n try { return f.apply(cm, arguments) }\n finally { endOperation(cm); }\n }\n }\n // Used to add methods to editor and doc instances, wrapping them in\n // operations.\n function methodOp(f) {\n return function() {\n if (this.curOp) { return f.apply(this, arguments) }\n startOperation(this);\n try { return f.apply(this, arguments) }\n finally { endOperation(this); }\n }\n }\n function docMethodOp(f) {\n return function() {\n var cm = this.cm;\n if (!cm || cm.curOp) { return f.apply(this, arguments) }\n startOperation(cm);\n try { return f.apply(this, arguments) }\n finally { endOperation(cm); }\n }\n }\n\n // HIGHLIGHT WORKER\n\n function startWorker(cm, time) {\n if (cm.doc.highlightFrontier < cm.display.viewTo)\n { cm.state.highlight.set(time, bind(highlightWorker, cm)); }\n }\n\n function highlightWorker(cm) {\n var doc = cm.doc;\n if (doc.highlightFrontier >= cm.display.viewTo) { return }\n var end = +new Date + cm.options.workTime;\n var context = getContextBefore(cm, doc.highlightFrontier);\n var changedLines = [];\n\n doc.iter(context.line, Math.min(doc.first + doc.size, cm.display.viewTo + 500), function (line) {\n if (context.line >= cm.display.viewFrom) { // Visible\n var oldStyles = line.styles;\n var resetState = line.text.length > cm.options.maxHighlightLength ? copyState(doc.mode, context.state) : null;\n var highlighted = highlightLine(cm, line, context, true);\n if (resetState) { context.state = resetState; }\n line.styles = highlighted.styles;\n var oldCls = line.styleClasses, newCls = highlighted.classes;\n if (newCls) { line.styleClasses = newCls; }\n else if (oldCls) { line.styleClasses = null; }\n var ischange = !oldStyles || oldStyles.length != line.styles.length ||\n oldCls != newCls && (!oldCls || !newCls || oldCls.bgClass != newCls.bgClass || oldCls.textClass != newCls.textClass);\n for (var i = 0; !ischange && i < oldStyles.length; ++i) { ischange = oldStyles[i] != line.styles[i]; }\n if (ischange) { changedLines.push(context.line); }\n line.stateAfter = context.save();\n context.nextLine();\n } else {\n if (line.text.length <= cm.options.maxHighlightLength)\n { processLine(cm, line.text, context); }\n line.stateAfter = context.line % 5 == 0 ? context.save() : null;\n context.nextLine();\n }\n if (+new Date > end) {\n startWorker(cm, cm.options.workDelay);\n return true\n }\n });\n doc.highlightFrontier = context.line;\n doc.modeFrontier = Math.max(doc.modeFrontier, context.line);\n if (changedLines.length) { runInOp(cm, function () {\n for (var i = 0; i < changedLines.length; i++)\n { regLineChange(cm, changedLines[i], \"text\"); }\n }); }\n }\n\n // DISPLAY DRAWING\n\n var DisplayUpdate = function(cm, viewport, force) {\n var display = cm.display;\n\n this.viewport = viewport;\n // Store some values that we'll need later (but don't want to force a relayout for)\n this.visible = visibleLines(display, cm.doc, viewport);\n this.editorIsHidden = !display.wrapper.offsetWidth;\n this.wrapperHeight = display.wrapper.clientHeight;\n this.wrapperWidth = display.wrapper.clientWidth;\n this.oldDisplayWidth = displayWidth(cm);\n this.force = force;\n this.dims = getDimensions(cm);\n this.events = [];\n };\n\n DisplayUpdate.prototype.signal = function (emitter, type) {\n if (hasHandler(emitter, type))\n { this.events.push(arguments); }\n };\n DisplayUpdate.prototype.finish = function () {\n for (var i = 0; i < this.events.length; i++)\n { signal.apply(null, this.events[i]); }\n };\n\n function maybeClipScrollbars(cm) {\n var display = cm.display;\n if (!display.scrollbarsClipped && display.scroller.offsetWidth) {\n display.nativeBarWidth = display.scroller.offsetWidth - display.scroller.clientWidth;\n display.heightForcer.style.height = scrollGap(cm) + \"px\";\n display.sizer.style.marginBottom = -display.nativeBarWidth + \"px\";\n display.sizer.style.borderRightWidth = scrollGap(cm) + \"px\";\n display.scrollbarsClipped = true;\n }\n }\n\n function selectionSnapshot(cm) {\n if (cm.hasFocus()) { return null }\n var active = activeElt(root(cm));\n if (!active || !contains(cm.display.lineDiv, active)) { return null }\n var result = {activeElt: active};\n if (window.getSelection) {\n var sel = win(cm).getSelection();\n if (sel.anchorNode && sel.extend && contains(cm.display.lineDiv, sel.anchorNode)) {\n result.anchorNode = sel.anchorNode;\n result.anchorOffset = sel.anchorOffset;\n result.focusNode = sel.focusNode;\n result.focusOffset = sel.focusOffset;\n }\n }\n return result\n }\n\n function restoreSelection(snapshot) {\n if (!snapshot || !snapshot.activeElt || snapshot.activeElt == activeElt(rootNode(snapshot.activeElt))) { return }\n snapshot.activeElt.focus();\n if (!/^(INPUT|TEXTAREA)$/.test(snapshot.activeElt.nodeName) &&\n snapshot.anchorNode && contains(document.body, snapshot.anchorNode) && contains(document.body, snapshot.focusNode)) {\n var doc = snapshot.activeElt.ownerDocument;\n var sel = doc.defaultView.getSelection(), range = doc.createRange();\n range.setEnd(snapshot.anchorNode, snapshot.anchorOffset);\n range.collapse(false);\n sel.removeAllRanges();\n sel.addRange(range);\n sel.extend(snapshot.focusNode, snapshot.focusOffset);\n }\n }\n\n // Does the actual updating of the line display. Bails out\n // (returning false) when there is nothing to be done and forced is\n // false.\n function updateDisplayIfNeeded(cm, update) {\n var display = cm.display, doc = cm.doc;\n\n if (update.editorIsHidden) {\n resetView(cm);\n return false\n }\n\n // Bail out if the visible area is already rendered and nothing changed.\n if (!update.force &&\n update.visible.from >= display.viewFrom && update.visible.to <= display.viewTo &&\n (display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo) &&\n display.renderedView == display.view && countDirtyView(cm) == 0)\n { return false }\n\n if (maybeUpdateLineNumberWidth(cm)) {\n resetView(cm);\n update.dims = getDimensions(cm);\n }\n\n // Compute a suitable new viewport (from & to)\n var end = doc.first + doc.size;\n var from = Math.max(update.visible.from - cm.options.viewportMargin, doc.first);\n var to = Math.min(end, update.visible.to + cm.options.viewportMargin);\n if (display.viewFrom < from && from - display.viewFrom < 20) { from = Math.max(doc.first, display.viewFrom); }\n if (display.viewTo > to && display.viewTo - to < 20) { to = Math.min(end, display.viewTo); }\n if (sawCollapsedSpans) {\n from = visualLineNo(cm.doc, from);\n to = visualLineEndNo(cm.doc, to);\n }\n\n var different = from != display.viewFrom || to != display.viewTo ||\n display.lastWrapHeight != update.wrapperHeight || display.lastWrapWidth != update.wrapperWidth;\n adjustView(cm, from, to);\n\n display.viewOffset = heightAtLine(getLine(cm.doc, display.viewFrom));\n // Position the mover div to align with the current scroll position\n cm.display.mover.style.top = display.viewOffset + \"px\";\n\n var toUpdate = countDirtyView(cm);\n if (!different && toUpdate == 0 && !update.force && display.renderedView == display.view &&\n (display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo))\n { return false }\n\n // For big changes, we hide the enclosing element during the\n // update, since that speeds up the operations on most browsers.\n var selSnapshot = selectionSnapshot(cm);\n if (toUpdate > 4) { display.lineDiv.style.display = \"none\"; }\n patchDisplay(cm, display.updateLineNumbers, update.dims);\n if (toUpdate > 4) { display.lineDiv.style.display = \"\"; }\n display.renderedView = display.view;\n // There might have been a widget with a focused element that got\n // hidden or updated, if so re-focus it.\n restoreSelection(selSnapshot);\n\n // Prevent selection and cursors from interfering with the scroll\n // width and height.\n removeChildren(display.cursorDiv);\n removeChildren(display.selectionDiv);\n display.gutters.style.height = display.sizer.style.minHeight = 0;\n\n if (different) {\n display.lastWrapHeight = update.wrapperHeight;\n display.lastWrapWidth = update.wrapperWidth;\n startWorker(cm, 400);\n }\n\n display.updateLineNumbers = null;\n\n return true\n }\n\n function postUpdateDisplay(cm, update) {\n var viewport = update.viewport;\n\n for (var first = true;; first = false) {\n if (!first || !cm.options.lineWrapping || update.oldDisplayWidth == displayWidth(cm)) {\n // Clip forced viewport to actual scrollable area.\n if (viewport && viewport.top != null)\n { viewport = {top: Math.min(cm.doc.height + paddingVert(cm.display) - displayHeight(cm), viewport.top)}; }\n // Updated line heights might result in the drawn area not\n // actually covering the viewport. Keep looping until it does.\n update.visible = visibleLines(cm.display, cm.doc, viewport);\n if (update.visible.from >= cm.display.viewFrom && update.visible.to <= cm.display.viewTo)\n { break }\n } else if (first) {\n update.visible = visibleLines(cm.display, cm.doc, viewport);\n }\n if (!updateDisplayIfNeeded(cm, update)) { break }\n updateHeightsInViewport(cm);\n var barMeasure = measureForScrollbars(cm);\n updateSelection(cm);\n updateScrollbars(cm, barMeasure);\n setDocumentHeight(cm, barMeasure);\n update.force = false;\n }\n\n update.signal(cm, \"update\", cm);\n if (cm.display.viewFrom != cm.display.reportedViewFrom || cm.display.viewTo != cm.display.reportedViewTo) {\n update.signal(cm, \"viewportChange\", cm, cm.display.viewFrom, cm.display.viewTo);\n cm.display.reportedViewFrom = cm.display.viewFrom; cm.display.reportedViewTo = cm.display.viewTo;\n }\n }\n\n function updateDisplaySimple(cm, viewport) {\n var update = new DisplayUpdate(cm, viewport);\n if (updateDisplayIfNeeded(cm, update)) {\n updateHeightsInViewport(cm);\n postUpdateDisplay(cm, update);\n var barMeasure = measureForScrollbars(cm);\n updateSelection(cm);\n updateScrollbars(cm, barMeasure);\n setDocumentHeight(cm, barMeasure);\n update.finish();\n }\n }\n\n // Sync the actual display DOM structure with display.view, removing\n // nodes for lines that are no longer in view, and creating the ones\n // that are not there yet, and updating the ones that are out of\n // date.\n function patchDisplay(cm, updateNumbersFrom, dims) {\n var display = cm.display, lineNumbers = cm.options.lineNumbers;\n var container = display.lineDiv, cur = container.firstChild;\n\n function rm(node) {\n var next = node.nextSibling;\n // Works around a throw-scroll bug in OS X Webkit\n if (webkit && mac && cm.display.currentWheelTarget == node)\n { node.style.display = \"none\"; }\n else\n { node.parentNode.removeChild(node); }\n return next\n }\n\n var view = display.view, lineN = display.viewFrom;\n // Loop over the elements in the view, syncing cur (the DOM nodes\n // in display.lineDiv) with the view as we go.\n for (var i = 0; i < view.length; i++) {\n var lineView = view[i];\n if (lineView.hidden) ; else if (!lineView.node || lineView.node.parentNode != container) { // Not drawn yet\n var node = buildLineElement(cm, lineView, lineN, dims);\n container.insertBefore(node, cur);\n } else { // Already drawn\n while (cur != lineView.node) { cur = rm(cur); }\n var updateNumber = lineNumbers && updateNumbersFrom != null &&\n updateNumbersFrom <= lineN && lineView.lineNumber;\n if (lineView.changes) {\n if (indexOf(lineView.changes, \"gutter\") > -1) { updateNumber = false; }\n updateLineForChanges(cm, lineView, lineN, dims);\n }\n if (updateNumber) {\n removeChildren(lineView.lineNumber);\n lineView.lineNumber.appendChild(document.createTextNode(lineNumberFor(cm.options, lineN)));\n }\n cur = lineView.node.nextSibling;\n }\n lineN += lineView.size;\n }\n while (cur) { cur = rm(cur); }\n }\n\n function updateGutterSpace(display) {\n var width = display.gutters.offsetWidth;\n display.sizer.style.marginLeft = width + \"px\";\n // Send an event to consumers responding to changes in gutter width.\n signalLater(display, \"gutterChanged\", display);\n }\n\n function setDocumentHeight(cm, measure) {\n cm.display.sizer.style.minHeight = measure.docHeight + \"px\";\n cm.display.heightForcer.style.top = measure.docHeight + \"px\";\n cm.display.gutters.style.height = (measure.docHeight + cm.display.barHeight + scrollGap(cm)) + \"px\";\n }\n\n // Re-align line numbers and gutter marks to compensate for\n // horizontal scrolling.\n function alignHorizontally(cm) {\n var display = cm.display, view = display.view;\n if (!display.alignWidgets && (!display.gutters.firstChild || !cm.options.fixedGutter)) { return }\n var comp = compensateForHScroll(display) - display.scroller.scrollLeft + cm.doc.scrollLeft;\n var gutterW = display.gutters.offsetWidth, left = comp + \"px\";\n for (var i = 0; i < view.length; i++) { if (!view[i].hidden) {\n if (cm.options.fixedGutter) {\n if (view[i].gutter)\n { view[i].gutter.style.left = left; }\n if (view[i].gutterBackground)\n { view[i].gutterBackground.style.left = left; }\n }\n var align = view[i].alignable;\n if (align) { for (var j = 0; j < align.length; j++)\n { align[j].style.left = left; } }\n } }\n if (cm.options.fixedGutter)\n { display.gutters.style.left = (comp + gutterW) + \"px\"; }\n }\n\n // Used to ensure that the line number gutter is still the right\n // size for the current document size. Returns true when an update\n // is needed.\n function maybeUpdateLineNumberWidth(cm) {\n if (!cm.options.lineNumbers) { return false }\n var doc = cm.doc, last = lineNumberFor(cm.options, doc.first + doc.size - 1), display = cm.display;\n if (last.length != display.lineNumChars) {\n var test = display.measure.appendChild(elt(\"div\", [elt(\"div\", last)],\n \"CodeMirror-linenumber CodeMirror-gutter-elt\"));\n var innerW = test.firstChild.offsetWidth, padding = test.offsetWidth - innerW;\n display.lineGutter.style.width = \"\";\n display.lineNumInnerWidth = Math.max(innerW, display.lineGutter.offsetWidth - padding) + 1;\n display.lineNumWidth = display.lineNumInnerWidth + padding;\n display.lineNumChars = display.lineNumInnerWidth ? last.length : -1;\n display.lineGutter.style.width = display.lineNumWidth + \"px\";\n updateGutterSpace(cm.display);\n return true\n }\n return false\n }\n\n function getGutters(gutters, lineNumbers) {\n var result = [], sawLineNumbers = false;\n for (var i = 0; i < gutters.length; i++) {\n var name = gutters[i], style = null;\n if (typeof name != \"string\") { style = name.style; name = name.className; }\n if (name == \"CodeMirror-linenumbers\") {\n if (!lineNumbers) { continue }\n else { sawLineNumbers = true; }\n }\n result.push({className: name, style: style});\n }\n if (lineNumbers && !sawLineNumbers) { result.push({className: \"CodeMirror-linenumbers\", style: null}); }\n return result\n }\n\n // Rebuild the gutter elements, ensure the margin to the left of the\n // code matches their width.\n function renderGutters(display) {\n var gutters = display.gutters, specs = display.gutterSpecs;\n removeChildren(gutters);\n display.lineGutter = null;\n for (var i = 0; i < specs.length; ++i) {\n var ref = specs[i];\n var className = ref.className;\n var style = ref.style;\n var gElt = gutters.appendChild(elt(\"div\", null, \"CodeMirror-gutter \" + className));\n if (style) { gElt.style.cssText = style; }\n if (className == \"CodeMirror-linenumbers\") {\n display.lineGutter = gElt;\n gElt.style.width = (display.lineNumWidth || 1) + \"px\";\n }\n }\n gutters.style.display = specs.length ? \"\" : \"none\";\n updateGutterSpace(display);\n }\n\n function updateGutters(cm) {\n renderGutters(cm.display);\n regChange(cm);\n alignHorizontally(cm);\n }\n\n // The display handles the DOM integration, both for input reading\n // and content drawing. It holds references to DOM nodes and\n // display-related state.\n\n function Display(place, doc, input, options) {\n var d = this;\n this.input = input;\n\n // Covers bottom-right square when both scrollbars are present.\n d.scrollbarFiller = elt(\"div\", null, \"CodeMirror-scrollbar-filler\");\n d.scrollbarFiller.setAttribute(\"cm-not-content\", \"true\");\n // Covers bottom of gutter when coverGutterNextToScrollbar is on\n // and h scrollbar is present.\n d.gutterFiller = elt(\"div\", null, \"CodeMirror-gutter-filler\");\n d.gutterFiller.setAttribute(\"cm-not-content\", \"true\");\n // Will contain the actual code, positioned to cover the viewport.\n d.lineDiv = eltP(\"div\", null, \"CodeMirror-code\");\n // Elements are added to these to represent selection and cursors.\n d.selectionDiv = elt(\"div\", null, null, \"position: relative; z-index: 1\");\n d.cursorDiv = elt(\"div\", null, \"CodeMirror-cursors\");\n // A visibility: hidden element used to find the size of things.\n d.measure = elt(\"div\", null, \"CodeMirror-measure\");\n // When lines outside of the viewport are measured, they are drawn in this.\n d.lineMeasure = elt(\"div\", null, \"CodeMirror-measure\");\n // Wraps everything that needs to exist inside the vertically-padded coordinate system\n d.lineSpace = eltP(\"div\", [d.measure, d.lineMeasure, d.selectionDiv, d.cursorDiv, d.lineDiv],\n null, \"position: relative; outline: none\");\n var lines = eltP(\"div\", [d.lineSpace], \"CodeMirror-lines\");\n // Moved around its parent to cover visible view.\n d.mover = elt(\"div\", [lines], null, \"position: relative\");\n // Set to the height of the document, allowing scrolling.\n d.sizer = elt(\"div\", [d.mover], \"CodeMirror-sizer\");\n d.sizerWidth = null;\n // Behavior of elts with overflow: auto and padding is\n // inconsistent across browsers. This is used to ensure the\n // scrollable area is big enough.\n d.heightForcer = elt(\"div\", null, null, \"position: absolute; height: \" + scrollerGap + \"px; width: 1px;\");\n // Will contain the gutters, if any.\n d.gutters = elt(\"div\", null, \"CodeMirror-gutters\");\n d.lineGutter = null;\n // Actual scrollable element.\n d.scroller = elt(\"div\", [d.sizer, d.heightForcer, d.gutters], \"CodeMirror-scroll\");\n d.scroller.setAttribute(\"tabIndex\", \"-1\");\n // The element in which the editor lives.\n d.wrapper = elt(\"div\", [d.scrollbarFiller, d.gutterFiller, d.scroller], \"CodeMirror\");\n // See #6982. FIXME remove when this has been fixed for a while in Chrome\n if (chrome && chrome_version === 105) { d.wrapper.style.clipPath = \"inset(0px)\"; }\n\n // This attribute is respected by automatic translation systems such as Google Translate,\n // and may also be respected by tools used by human translators.\n d.wrapper.setAttribute('translate', 'no');\n\n // Work around IE7 z-index bug (not perfect, hence IE7 not really being supported)\n if (ie && ie_version < 8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0; }\n if (!webkit && !(gecko && mobile)) { d.scroller.draggable = true; }\n\n if (place) {\n if (place.appendChild) { place.appendChild(d.wrapper); }\n else { place(d.wrapper); }\n }\n\n // Current rendered range (may be bigger than the view window).\n d.viewFrom = d.viewTo = doc.first;\n d.reportedViewFrom = d.reportedViewTo = doc.first;\n // Information about the rendered lines.\n d.view = [];\n d.renderedView = null;\n // Holds info about a single rendered line when it was rendered\n // for measurement, while not in view.\n d.externalMeasured = null;\n // Empty space (in pixels) above the view\n d.viewOffset = 0;\n d.lastWrapHeight = d.lastWrapWidth = 0;\n d.updateLineNumbers = null;\n\n d.nativeBarWidth = d.barHeight = d.barWidth = 0;\n d.scrollbarsClipped = false;\n\n // Used to only resize the line number gutter when necessary (when\n // the amount of lines crosses a boundary that makes its width change)\n d.lineNumWidth = d.lineNumInnerWidth = d.lineNumChars = null;\n // Set to true when a non-horizontal-scrolling line widget is\n // added. As an optimization, line widget aligning is skipped when\n // this is false.\n d.alignWidgets = false;\n\n d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null;\n\n // Tracks the maximum line length so that the horizontal scrollbar\n // can be kept static when scrolling.\n d.maxLine = null;\n d.maxLineLength = 0;\n d.maxLineChanged = false;\n\n // Used for measuring wheel scrolling granularity\n d.wheelDX = d.wheelDY = d.wheelStartX = d.wheelStartY = null;\n\n // True when shift is held down.\n d.shift = false;\n\n // Used to track whether anything happened since the context menu\n // was opened.\n d.selForContextMenu = null;\n\n d.activeTouch = null;\n\n d.gutterSpecs = getGutters(options.gutters, options.lineNumbers);\n renderGutters(d);\n\n input.init(d);\n }\n\n // Since the delta values reported on mouse wheel events are\n // unstandardized between browsers and even browser versions, and\n // generally horribly unpredictable, this code starts by measuring\n // the scroll effect that the first few mouse wheel events have,\n // and, from that, detects the way it can convert deltas to pixel\n // offsets afterwards.\n //\n // The reason we want to know the amount a wheel event will scroll\n // is that it gives us a chance to update the display before the\n // actual scrolling happens, reducing flickering.\n\n var wheelSamples = 0, wheelPixelsPerUnit = null;\n // Fill in a browser-detected starting value on browsers where we\n // know one. These don't have to be accurate -- the result of them\n // being wrong would just be a slight flicker on the first wheel\n // scroll (if it is large enough).\n if (ie) { wheelPixelsPerUnit = -.53; }\n else if (gecko) { wheelPixelsPerUnit = 15; }\n else if (chrome) { wheelPixelsPerUnit = -.7; }\n else if (safari) { wheelPixelsPerUnit = -1/3; }\n\n function wheelEventDelta(e) {\n var dx = e.wheelDeltaX, dy = e.wheelDeltaY;\n if (dx == null && e.detail && e.axis == e.HORIZONTAL_AXIS) { dx = e.detail; }\n if (dy == null && e.detail && e.axis == e.VERTICAL_AXIS) { dy = e.detail; }\n else if (dy == null) { dy = e.wheelDelta; }\n return {x: dx, y: dy}\n }\n function wheelEventPixels(e) {\n var delta = wheelEventDelta(e);\n delta.x *= wheelPixelsPerUnit;\n delta.y *= wheelPixelsPerUnit;\n return delta\n }\n\n function onScrollWheel(cm, e) {\n // On Chrome 102, viewport updates somehow stop wheel-based\n // scrolling. Turning off pointer events during the scroll seems\n // to avoid the issue.\n if (chrome && chrome_version == 102) {\n if (cm.display.chromeScrollHack == null) { cm.display.sizer.style.pointerEvents = \"none\"; }\n else { clearTimeout(cm.display.chromeScrollHack); }\n cm.display.chromeScrollHack = setTimeout(function () {\n cm.display.chromeScrollHack = null;\n cm.display.sizer.style.pointerEvents = \"\";\n }, 100);\n }\n var delta = wheelEventDelta(e), dx = delta.x, dy = delta.y;\n var pixelsPerUnit = wheelPixelsPerUnit;\n if (e.deltaMode === 0) {\n dx = e.deltaX;\n dy = e.deltaY;\n pixelsPerUnit = 1;\n }\n\n var display = cm.display, scroll = display.scroller;\n // Quit if there's nothing to scroll here\n var canScrollX = scroll.scrollWidth > scroll.clientWidth;\n var canScrollY = scroll.scrollHeight > scroll.clientHeight;\n if (!(dx && canScrollX || dy && canScrollY)) { return }\n\n // Webkit browsers on OS X abort momentum scrolls when the target\n // of the scroll event is removed from the scrollable element.\n // This hack (see related code in patchDisplay) makes sure the\n // element is kept around.\n if (dy && mac && webkit) {\n outer: for (var cur = e.target, view = display.view; cur != scroll; cur = cur.parentNode) {\n for (var i = 0; i < view.length; i++) {\n if (view[i].node == cur) {\n cm.display.currentWheelTarget = cur;\n break outer\n }\n }\n }\n }\n\n // On some browsers, horizontal scrolling will cause redraws to\n // happen before the gutter has been realigned, causing it to\n // wriggle around in a most unseemly way. When we have an\n // estimated pixels/delta value, we just handle horizontal\n // scrolling entirely here. It'll be slightly off from native, but\n // better than glitching out.\n if (dx && !gecko && !presto && pixelsPerUnit != null) {\n if (dy && canScrollY)\n { updateScrollTop(cm, Math.max(0, scroll.scrollTop + dy * pixelsPerUnit)); }\n setScrollLeft(cm, Math.max(0, scroll.scrollLeft + dx * pixelsPerUnit));\n // Only prevent default scrolling if vertical scrolling is\n // actually possible. Otherwise, it causes vertical scroll\n // jitter on OSX trackpads when deltaX is small and deltaY\n // is large (issue #3579)\n if (!dy || (dy && canScrollY))\n { e_preventDefault(e); }\n display.wheelStartX = null; // Abort measurement, if in progress\n return\n }\n\n // 'Project' the visible viewport to cover the area that is being\n // scrolled into view (if we know enough to estimate it).\n if (dy && pixelsPerUnit != null) {\n var pixels = dy * pixelsPerUnit;\n var top = cm.doc.scrollTop, bot = top + display.wrapper.clientHeight;\n if (pixels < 0) { top = Math.max(0, top + pixels - 50); }\n else { bot = Math.min(cm.doc.height, bot + pixels + 50); }\n updateDisplaySimple(cm, {top: top, bottom: bot});\n }\n\n if (wheelSamples < 20 && e.deltaMode !== 0) {\n if (display.wheelStartX == null) {\n display.wheelStartX = scroll.scrollLeft; display.wheelStartY = scroll.scrollTop;\n display.wheelDX = dx; display.wheelDY = dy;\n setTimeout(function () {\n if (display.wheelStartX == null) { return }\n var movedX = scroll.scrollLeft - display.wheelStartX;\n var movedY = scroll.scrollTop - display.wheelStartY;\n var sample = (movedY && display.wheelDY && movedY / display.wheelDY) ||\n (movedX && display.wheelDX && movedX / display.wheelDX);\n display.wheelStartX = display.wheelStartY = null;\n if (!sample) { return }\n wheelPixelsPerUnit = (wheelPixelsPerUnit * wheelSamples + sample) / (wheelSamples + 1);\n ++wheelSamples;\n }, 200);\n } else {\n display.wheelDX += dx; display.wheelDY += dy;\n }\n }\n }\n\n // Selection objects are immutable. A new one is created every time\n // the selection changes. A selection is one or more non-overlapping\n // (and non-touching) ranges, sorted, and an integer that indicates\n // which one is the primary selection (the one that's scrolled into\n // view, that getCursor returns, etc).\n var Selection = function(ranges, primIndex) {\n this.ranges = ranges;\n this.primIndex = primIndex;\n };\n\n Selection.prototype.primary = function () { return this.ranges[this.primIndex] };\n\n Selection.prototype.equals = function (other) {\n if (other == this) { return true }\n if (other.primIndex != this.primIndex || other.ranges.length != this.ranges.length) { return false }\n for (var i = 0; i < this.ranges.length; i++) {\n var here = this.ranges[i], there = other.ranges[i];\n if (!equalCursorPos(here.anchor, there.anchor) || !equalCursorPos(here.head, there.head)) { return false }\n }\n return true\n };\n\n Selection.prototype.deepCopy = function () {\n var out = [];\n for (var i = 0; i < this.ranges.length; i++)\n { out[i] = new Range(copyPos(this.ranges[i].anchor), copyPos(this.ranges[i].head)); }\n return new Selection(out, this.primIndex)\n };\n\n Selection.prototype.somethingSelected = function () {\n for (var i = 0; i < this.ranges.length; i++)\n { if (!this.ranges[i].empty()) { return true } }\n return false\n };\n\n Selection.prototype.contains = function (pos, end) {\n if (!end) { end = pos; }\n for (var i = 0; i < this.ranges.length; i++) {\n var range = this.ranges[i];\n if (cmp(end, range.from()) >= 0 && cmp(pos, range.to()) <= 0)\n { return i }\n }\n return -1\n };\n\n var Range = function(anchor, head) {\n this.anchor = anchor; this.head = head;\n };\n\n Range.prototype.from = function () { return minPos(this.anchor, this.head) };\n Range.prototype.to = function () { return maxPos(this.anchor, this.head) };\n Range.prototype.empty = function () { return this.head.line == this.anchor.line && this.head.ch == this.anchor.ch };\n\n // Take an unsorted, potentially overlapping set of ranges, and\n // build a selection out of it. 'Consumes' ranges array (modifying\n // it).\n function normalizeSelection(cm, ranges, primIndex) {\n var mayTouch = cm && cm.options.selectionsMayTouch;\n var prim = ranges[primIndex];\n ranges.sort(function (a, b) { return cmp(a.from(), b.from()); });\n primIndex = indexOf(ranges, prim);\n for (var i = 1; i < ranges.length; i++) {\n var cur = ranges[i], prev = ranges[i - 1];\n var diff = cmp(prev.to(), cur.from());\n if (mayTouch && !cur.empty() ? diff > 0 : diff >= 0) {\n var from = minPos(prev.from(), cur.from()), to = maxPos(prev.to(), cur.to());\n var inv = prev.empty() ? cur.from() == cur.head : prev.from() == prev.head;\n if (i <= primIndex) { --primIndex; }\n ranges.splice(--i, 2, new Range(inv ? to : from, inv ? from : to));\n }\n }\n return new Selection(ranges, primIndex)\n }\n\n function simpleSelection(anchor, head) {\n return new Selection([new Range(anchor, head || anchor)], 0)\n }\n\n // Compute the position of the end of a change (its 'to' property\n // refers to the pre-change end).\n function changeEnd(change) {\n if (!change.text) { return change.to }\n return Pos(change.from.line + change.text.length - 1,\n lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0))\n }\n\n // Adjust a position to refer to the post-change position of the\n // same text, or the end of the change if the change covers it.\n function adjustForChange(pos, change) {\n if (cmp(pos, change.from) < 0) { return pos }\n if (cmp(pos, change.to) <= 0) { return changeEnd(change) }\n\n var line = pos.line + change.text.length - (change.to.line - change.from.line) - 1, ch = pos.ch;\n if (pos.line == change.to.line) { ch += changeEnd(change).ch - change.to.ch; }\n return Pos(line, ch)\n }\n\n function computeSelAfterChange(doc, change) {\n var out = [];\n for (var i = 0; i < doc.sel.ranges.length; i++) {\n var range = doc.sel.ranges[i];\n out.push(new Range(adjustForChange(range.anchor, change),\n adjustForChange(range.head, change)));\n }\n return normalizeSelection(doc.cm, out, doc.sel.primIndex)\n }\n\n function offsetPos(pos, old, nw) {\n if (pos.line == old.line)\n { return Pos(nw.line, pos.ch - old.ch + nw.ch) }\n else\n { return Pos(nw.line + (pos.line - old.line), pos.ch) }\n }\n\n // Used by replaceSelections to allow moving the selection to the\n // start or around the replaced test. Hint may be \"start\" or \"around\".\n function computeReplacedSel(doc, changes, hint) {\n var out = [];\n var oldPrev = Pos(doc.first, 0), newPrev = oldPrev;\n for (var i = 0; i < changes.length; i++) {\n var change = changes[i];\n var from = offsetPos(change.from, oldPrev, newPrev);\n var to = offsetPos(changeEnd(change), oldPrev, newPrev);\n oldPrev = change.to;\n newPrev = to;\n if (hint == \"around\") {\n var range = doc.sel.ranges[i], inv = cmp(range.head, range.anchor) < 0;\n out[i] = new Range(inv ? to : from, inv ? from : to);\n } else {\n out[i] = new Range(from, from);\n }\n }\n return new Selection(out, doc.sel.primIndex)\n }\n\n // Used to get the editor into a consistent state again when options change.\n\n function loadMode(cm) {\n cm.doc.mode = getMode(cm.options, cm.doc.modeOption);\n resetModeState(cm);\n }\n\n function resetModeState(cm) {\n cm.doc.iter(function (line) {\n if (line.stateAfter) { line.stateAfter = null; }\n if (line.styles) { line.styles = null; }\n });\n cm.doc.modeFrontier = cm.doc.highlightFrontier = cm.doc.first;\n startWorker(cm, 100);\n cm.state.modeGen++;\n if (cm.curOp) { regChange(cm); }\n }\n\n // DOCUMENT DATA STRUCTURE\n\n // By default, updates that start and end at the beginning of a line\n // are treated specially, in order to make the association of line\n // widgets and marker elements with the text behave more intuitive.\n function isWholeLineUpdate(doc, change) {\n return change.from.ch == 0 && change.to.ch == 0 && lst(change.text) == \"\" &&\n (!doc.cm || doc.cm.options.wholeLineUpdateBefore)\n }\n\n // Perform a change on the document data structure.\n function updateDoc(doc, change, markedSpans, estimateHeight) {\n function spansFor(n) {return markedSpans ? markedSpans[n] : null}\n function update(line, text, spans) {\n updateLine(line, text, spans, estimateHeight);\n signalLater(line, \"change\", line, change);\n }\n function linesFor(start, end) {\n var result = [];\n for (var i = start; i < end; ++i)\n { result.push(new Line(text[i], spansFor(i), estimateHeight)); }\n return result\n }\n\n var from = change.from, to = change.to, text = change.text;\n var firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line);\n var lastText = lst(text), lastSpans = spansFor(text.length - 1), nlines = to.line - from.line;\n\n // Adjust the line structure\n if (change.full) {\n doc.insert(0, linesFor(0, text.length));\n doc.remove(text.length, doc.size - text.length);\n } else if (isWholeLineUpdate(doc, change)) {\n // This is a whole-line replace. Treated specially to make\n // sure line objects move the way they are supposed to.\n var added = linesFor(0, text.length - 1);\n update(lastLine, lastLine.text, lastSpans);\n if (nlines) { doc.remove(from.line, nlines); }\n if (added.length) { doc.insert(from.line, added); }\n } else if (firstLine == lastLine) {\n if (text.length == 1) {\n update(firstLine, firstLine.text.slice(0, from.ch) + lastText + firstLine.text.slice(to.ch), lastSpans);\n } else {\n var added$1 = linesFor(1, text.length - 1);\n added$1.push(new Line(lastText + firstLine.text.slice(to.ch), lastSpans, estimateHeight));\n update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0));\n doc.insert(from.line + 1, added$1);\n }\n } else if (text.length == 1) {\n update(firstLine, firstLine.text.slice(0, from.ch) + text[0] + lastLine.text.slice(to.ch), spansFor(0));\n doc.remove(from.line + 1, nlines);\n } else {\n update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0));\n update(lastLine, lastText + lastLine.text.slice(to.ch), lastSpans);\n var added$2 = linesFor(1, text.length - 1);\n if (nlines > 1) { doc.remove(from.line + 1, nlines - 1); }\n doc.insert(from.line + 1, added$2);\n }\n\n signalLater(doc, \"change\", doc, change);\n }\n\n // Call f for all linked documents.\n function linkedDocs(doc, f, sharedHistOnly) {\n function propagate(doc, skip, sharedHist) {\n if (doc.linked) { for (var i = 0; i < doc.linked.length; ++i) {\n var rel = doc.linked[i];\n if (rel.doc == skip) { continue }\n var shared = sharedHist && rel.sharedHist;\n if (sharedHistOnly && !shared) { continue }\n f(rel.doc, shared);\n propagate(rel.doc, doc, shared);\n } }\n }\n propagate(doc, null, true);\n }\n\n // Attach a document to an editor.\n function attachDoc(cm, doc) {\n if (doc.cm) { throw new Error(\"This document is already in use.\") }\n cm.doc = doc;\n doc.cm = cm;\n estimateLineHeights(cm);\n loadMode(cm);\n setDirectionClass(cm);\n cm.options.direction = doc.direction;\n if (!cm.options.lineWrapping) { findMaxLine(cm); }\n cm.options.mode = doc.modeOption;\n regChange(cm);\n }\n\n function setDirectionClass(cm) {\n (cm.doc.direction == \"rtl\" ? addClass : rmClass)(cm.display.lineDiv, \"CodeMirror-rtl\");\n }\n\n function directionChanged(cm) {\n runInOp(cm, function () {\n setDirectionClass(cm);\n regChange(cm);\n });\n }\n\n function History(prev) {\n // Arrays of change events and selections. Doing something adds an\n // event to done and clears undo. Undoing moves events from done\n // to undone, redoing moves them in the other direction.\n this.done = []; this.undone = [];\n this.undoDepth = prev ? prev.undoDepth : Infinity;\n // Used to track when changes can be merged into a single undo\n // event\n this.lastModTime = this.lastSelTime = 0;\n this.lastOp = this.lastSelOp = null;\n this.lastOrigin = this.lastSelOrigin = null;\n // Used by the isClean() method\n this.generation = this.maxGeneration = prev ? prev.maxGeneration : 1;\n }\n\n // Create a history change event from an updateDoc-style change\n // object.\n function historyChangeFromChange(doc, change) {\n var histChange = {from: copyPos(change.from), to: changeEnd(change), text: getBetween(doc, change.from, change.to)};\n attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1);\n linkedDocs(doc, function (doc) { return attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1); }, true);\n return histChange\n }\n\n // Pop all selection events off the end of a history array. Stop at\n // a change event.\n function clearSelectionEvents(array) {\n while (array.length) {\n var last = lst(array);\n if (last.ranges) { array.pop(); }\n else { break }\n }\n }\n\n // Find the top change event in the history. Pop off selection\n // events that are in the way.\n function lastChangeEvent(hist, force) {\n if (force) {\n clearSelectionEvents(hist.done);\n return lst(hist.done)\n } else if (hist.done.length && !lst(hist.done).ranges) {\n return lst(hist.done)\n } else if (hist.done.length > 1 && !hist.done[hist.done.length - 2].ranges) {\n hist.done.pop();\n return lst(hist.done)\n }\n }\n\n // Register a change in the history. Merges changes that are within\n // a single operation, or are close together with an origin that\n // allows merging (starting with \"+\") into a single event.\n function addChangeToHistory(doc, change, selAfter, opId) {\n var hist = doc.history;\n hist.undone.length = 0;\n var time = +new Date, cur;\n var last;\n\n if ((hist.lastOp == opId ||\n hist.lastOrigin == change.origin && change.origin &&\n ((change.origin.charAt(0) == \"+\" && hist.lastModTime > time - (doc.cm ? doc.cm.options.historyEventDelay : 500)) ||\n change.origin.charAt(0) == \"*\")) &&\n (cur = lastChangeEvent(hist, hist.lastOp == opId))) {\n // Merge this change into the last event\n last = lst(cur.changes);\n if (cmp(change.from, change.to) == 0 && cmp(change.from, last.to) == 0) {\n // Optimized case for simple insertion -- don't want to add\n // new changesets for every character typed\n last.to = changeEnd(change);\n } else {\n // Add new sub-event\n cur.changes.push(historyChangeFromChange(doc, change));\n }\n } else {\n // Can not be merged, start a new event.\n var before = lst(hist.done);\n if (!before || !before.ranges)\n { pushSelectionToHistory(doc.sel, hist.done); }\n cur = {changes: [historyChangeFromChange(doc, change)],\n generation: hist.generation};\n hist.done.push(cur);\n while (hist.done.length > hist.undoDepth) {\n hist.done.shift();\n if (!hist.done[0].ranges) { hist.done.shift(); }\n }\n }\n hist.done.push(selAfter);\n hist.generation = ++hist.maxGeneration;\n hist.lastModTime = hist.lastSelTime = time;\n hist.lastOp = hist.lastSelOp = opId;\n hist.lastOrigin = hist.lastSelOrigin = change.origin;\n\n if (!last) { signal(doc, \"historyAdded\"); }\n }\n\n function selectionEventCanBeMerged(doc, origin, prev, sel) {\n var ch = origin.charAt(0);\n return ch == \"*\" ||\n ch == \"+\" &&\n prev.ranges.length == sel.ranges.length &&\n prev.somethingSelected() == sel.somethingSelected() &&\n new Date - doc.history.lastSelTime <= (doc.cm ? doc.cm.options.historyEventDelay : 500)\n }\n\n // Called whenever the selection changes, sets the new selection as\n // the pending selection in the history, and pushes the old pending\n // selection into the 'done' array when it was significantly\n // different (in number of selected ranges, emptiness, or time).\n function addSelectionToHistory(doc, sel, opId, options) {\n var hist = doc.history, origin = options && options.origin;\n\n // A new event is started when the previous origin does not match\n // the current, or the origins don't allow matching. Origins\n // starting with * are always merged, those starting with + are\n // merged when similar and close together in time.\n if (opId == hist.lastSelOp ||\n (origin && hist.lastSelOrigin == origin &&\n (hist.lastModTime == hist.lastSelTime && hist.lastOrigin == origin ||\n selectionEventCanBeMerged(doc, origin, lst(hist.done), sel))))\n { hist.done[hist.done.length - 1] = sel; }\n else\n { pushSelectionToHistory(sel, hist.done); }\n\n hist.lastSelTime = +new Date;\n hist.lastSelOrigin = origin;\n hist.lastSelOp = opId;\n if (options && options.clearRedo !== false)\n { clearSelectionEvents(hist.undone); }\n }\n\n function pushSelectionToHistory(sel, dest) {\n var top = lst(dest);\n if (!(top && top.ranges && top.equals(sel)))\n { dest.push(sel); }\n }\n\n // Used to store marked span information in the history.\n function attachLocalSpans(doc, change, from, to) {\n var existing = change[\"spans_\" + doc.id], n = 0;\n doc.iter(Math.max(doc.first, from), Math.min(doc.first + doc.size, to), function (line) {\n if (line.markedSpans)\n { (existing || (existing = change[\"spans_\" + doc.id] = {}))[n] = line.markedSpans; }\n ++n;\n });\n }\n\n // When un/re-doing restores text containing marked spans, those\n // that have been explicitly cleared should not be restored.\n function removeClearedSpans(spans) {\n if (!spans) { return null }\n var out;\n for (var i = 0; i < spans.length; ++i) {\n if (spans[i].marker.explicitlyCleared) { if (!out) { out = spans.slice(0, i); } }\n else if (out) { out.push(spans[i]); }\n }\n return !out ? spans : out.length ? out : null\n }\n\n // Retrieve and filter the old marked spans stored in a change event.\n function getOldSpans(doc, change) {\n var found = change[\"spans_\" + doc.id];\n if (!found) { return null }\n var nw = [];\n for (var i = 0; i < change.text.length; ++i)\n { nw.push(removeClearedSpans(found[i])); }\n return nw\n }\n\n // Used for un/re-doing changes from the history. Combines the\n // result of computing the existing spans with the set of spans that\n // existed in the history (so that deleting around a span and then\n // undoing brings back the span).\n function mergeOldSpans(doc, change) {\n var old = getOldSpans(doc, change);\n var stretched = stretchSpansOverChange(doc, change);\n if (!old) { return stretched }\n if (!stretched) { return old }\n\n for (var i = 0; i < old.length; ++i) {\n var oldCur = old[i], stretchCur = stretched[i];\n if (oldCur && stretchCur) {\n spans: for (var j = 0; j < stretchCur.length; ++j) {\n var span = stretchCur[j];\n for (var k = 0; k < oldCur.length; ++k)\n { if (oldCur[k].marker == span.marker) { continue spans } }\n oldCur.push(span);\n }\n } else if (stretchCur) {\n old[i] = stretchCur;\n }\n }\n return old\n }\n\n // Used both to provide a JSON-safe object in .getHistory, and, when\n // detaching a document, to split the history in two\n function copyHistoryArray(events, newGroup, instantiateSel) {\n var copy = [];\n for (var i = 0; i < events.length; ++i) {\n var event = events[i];\n if (event.ranges) {\n copy.push(instantiateSel ? Selection.prototype.deepCopy.call(event) : event);\n continue\n }\n var changes = event.changes, newChanges = [];\n copy.push({changes: newChanges});\n for (var j = 0; j < changes.length; ++j) {\n var change = changes[j], m = (void 0);\n newChanges.push({from: change.from, to: change.to, text: change.text});\n if (newGroup) { for (var prop in change) { if (m = prop.match(/^spans_(\\d+)$/)) {\n if (indexOf(newGroup, Number(m[1])) > -1) {\n lst(newChanges)[prop] = change[prop];\n delete change[prop];\n }\n } } }\n }\n }\n return copy\n }\n\n // The 'scroll' parameter given to many of these indicated whether\n // the new cursor position should be scrolled into view after\n // modifying the selection.\n\n // If shift is held or the extend flag is set, extends a range to\n // include a given position (and optionally a second position).\n // Otherwise, simply returns the range between the given positions.\n // Used for cursor motion and such.\n function extendRange(range, head, other, extend) {\n if (extend) {\n var anchor = range.anchor;\n if (other) {\n var posBefore = cmp(head, anchor) < 0;\n if (posBefore != (cmp(other, anchor) < 0)) {\n anchor = head;\n head = other;\n } else if (posBefore != (cmp(head, other) < 0)) {\n head = other;\n }\n }\n return new Range(anchor, head)\n } else {\n return new Range(other || head, head)\n }\n }\n\n // Extend the primary selection range, discard the rest.\n function extendSelection(doc, head, other, options, extend) {\n if (extend == null) { extend = doc.cm && (doc.cm.display.shift || doc.extend); }\n setSelection(doc, new Selection([extendRange(doc.sel.primary(), head, other, extend)], 0), options);\n }\n\n // Extend all selections (pos is an array of selections with length\n // equal the number of selections)\n function extendSelections(doc, heads, options) {\n var out = [];\n var extend = doc.cm && (doc.cm.display.shift || doc.extend);\n for (var i = 0; i < doc.sel.ranges.length; i++)\n { out[i] = extendRange(doc.sel.ranges[i], heads[i], null, extend); }\n var newSel = normalizeSelection(doc.cm, out, doc.sel.primIndex);\n setSelection(doc, newSel, options);\n }\n\n // Updates a single range in the selection.\n function replaceOneSelection(doc, i, range, options) {\n var ranges = doc.sel.ranges.slice(0);\n ranges[i] = range;\n setSelection(doc, normalizeSelection(doc.cm, ranges, doc.sel.primIndex), options);\n }\n\n // Reset the selection to a single range.\n function setSimpleSelection(doc, anchor, head, options) {\n setSelection(doc, simpleSelection(anchor, head), options);\n }\n\n // Give beforeSelectionChange handlers a change to influence a\n // selection update.\n function filterSelectionChange(doc, sel, options) {\n var obj = {\n ranges: sel.ranges,\n update: function(ranges) {\n this.ranges = [];\n for (var i = 0; i < ranges.length; i++)\n { this.ranges[i] = new Range(clipPos(doc, ranges[i].anchor),\n clipPos(doc, ranges[i].head)); }\n },\n origin: options && options.origin\n };\n signal(doc, \"beforeSelectionChange\", doc, obj);\n if (doc.cm) { signal(doc.cm, \"beforeSelectionChange\", doc.cm, obj); }\n if (obj.ranges != sel.ranges) { return normalizeSelection(doc.cm, obj.ranges, obj.ranges.length - 1) }\n else { return sel }\n }\n\n function setSelectionReplaceHistory(doc, sel, options) {\n var done = doc.history.done, last = lst(done);\n if (last && last.ranges) {\n done[done.length - 1] = sel;\n setSelectionNoUndo(doc, sel, options);\n } else {\n setSelection(doc, sel, options);\n }\n }\n\n // Set a new selection.\n function setSelection(doc, sel, options) {\n setSelectionNoUndo(doc, sel, options);\n addSelectionToHistory(doc, doc.sel, doc.cm ? doc.cm.curOp.id : NaN, options);\n }\n\n function setSelectionNoUndo(doc, sel, options) {\n if (hasHandler(doc, \"beforeSelectionChange\") || doc.cm && hasHandler(doc.cm, \"beforeSelectionChange\"))\n { sel = filterSelectionChange(doc, sel, options); }\n\n var bias = options && options.bias ||\n (cmp(sel.primary().head, doc.sel.primary().head) < 0 ? -1 : 1);\n setSelectionInner(doc, skipAtomicInSelection(doc, sel, bias, true));\n\n if (!(options && options.scroll === false) && doc.cm && doc.cm.getOption(\"readOnly\") != \"nocursor\")\n { ensureCursorVisible(doc.cm); }\n }\n\n function setSelectionInner(doc, sel) {\n if (sel.equals(doc.sel)) { return }\n\n doc.sel = sel;\n\n if (doc.cm) {\n doc.cm.curOp.updateInput = 1;\n doc.cm.curOp.selectionChanged = true;\n signalCursorActivity(doc.cm);\n }\n signalLater(doc, \"cursorActivity\", doc);\n }\n\n // Verify that the selection does not partially select any atomic\n // marked ranges.\n function reCheckSelection(doc) {\n setSelectionInner(doc, skipAtomicInSelection(doc, doc.sel, null, false));\n }\n\n // Return a selection that does not partially select any atomic\n // ranges.\n function skipAtomicInSelection(doc, sel, bias, mayClear) {\n var out;\n for (var i = 0; i < sel.ranges.length; i++) {\n var range = sel.ranges[i];\n var old = sel.ranges.length == doc.sel.ranges.length && doc.sel.ranges[i];\n var newAnchor = skipAtomic(doc, range.anchor, old && old.anchor, bias, mayClear);\n var newHead = range.head == range.anchor ? newAnchor : skipAtomic(doc, range.head, old && old.head, bias, mayClear);\n if (out || newAnchor != range.anchor || newHead != range.head) {\n if (!out) { out = sel.ranges.slice(0, i); }\n out[i] = new Range(newAnchor, newHead);\n }\n }\n return out ? normalizeSelection(doc.cm, out, sel.primIndex) : sel\n }\n\n function skipAtomicInner(doc, pos, oldPos, dir, mayClear) {\n var line = getLine(doc, pos.line);\n if (line.markedSpans) { for (var i = 0; i < line.markedSpans.length; ++i) {\n var sp = line.markedSpans[i], m = sp.marker;\n\n // Determine if we should prevent the cursor being placed to the left/right of an atomic marker\n // Historically this was determined using the inclusiveLeft/Right option, but the new way to control it\n // is with selectLeft/Right\n var preventCursorLeft = (\"selectLeft\" in m) ? !m.selectLeft : m.inclusiveLeft;\n var preventCursorRight = (\"selectRight\" in m) ? !m.selectRight : m.inclusiveRight;\n\n if ((sp.from == null || (preventCursorLeft ? sp.from <= pos.ch : sp.from < pos.ch)) &&\n (sp.to == null || (preventCursorRight ? sp.to >= pos.ch : sp.to > pos.ch))) {\n if (mayClear) {\n signal(m, \"beforeCursorEnter\");\n if (m.explicitlyCleared) {\n if (!line.markedSpans) { break }\n else {--i; continue}\n }\n }\n if (!m.atomic) { continue }\n\n if (oldPos) {\n var near = m.find(dir < 0 ? 1 : -1), diff = (void 0);\n if (dir < 0 ? preventCursorRight : preventCursorLeft)\n { near = movePos(doc, near, -dir, near && near.line == pos.line ? line : null); }\n if (near && near.line == pos.line && (diff = cmp(near, oldPos)) && (dir < 0 ? diff < 0 : diff > 0))\n { return skipAtomicInner(doc, near, pos, dir, mayClear) }\n }\n\n var far = m.find(dir < 0 ? -1 : 1);\n if (dir < 0 ? preventCursorLeft : preventCursorRight)\n { far = movePos(doc, far, dir, far.line == pos.line ? line : null); }\n return far ? skipAtomicInner(doc, far, pos, dir, mayClear) : null\n }\n } }\n return pos\n }\n\n // Ensure a given position is not inside an atomic range.\n function skipAtomic(doc, pos, oldPos, bias, mayClear) {\n var dir = bias || 1;\n var found = skipAtomicInner(doc, pos, oldPos, dir, mayClear) ||\n (!mayClear && skipAtomicInner(doc, pos, oldPos, dir, true)) ||\n skipAtomicInner(doc, pos, oldPos, -dir, mayClear) ||\n (!mayClear && skipAtomicInner(doc, pos, oldPos, -dir, true));\n if (!found) {\n doc.cantEdit = true;\n return Pos(doc.first, 0)\n }\n return found\n }\n\n function movePos(doc, pos, dir, line) {\n if (dir < 0 && pos.ch == 0) {\n if (pos.line > doc.first) { return clipPos(doc, Pos(pos.line - 1)) }\n else { return null }\n } else if (dir > 0 && pos.ch == (line || getLine(doc, pos.line)).text.length) {\n if (pos.line < doc.first + doc.size - 1) { return Pos(pos.line + 1, 0) }\n else { return null }\n } else {\n return new Pos(pos.line, pos.ch + dir)\n }\n }\n\n function selectAll(cm) {\n cm.setSelection(Pos(cm.firstLine(), 0), Pos(cm.lastLine()), sel_dontScroll);\n }\n\n // UPDATING\n\n // Allow \"beforeChange\" event handlers to influence a change\n function filterChange(doc, change, update) {\n var obj = {\n canceled: false,\n from: change.from,\n to: change.to,\n text: change.text,\n origin: change.origin,\n cancel: function () { return obj.canceled = true; }\n };\n if (update) { obj.update = function (from, to, text, origin) {\n if (from) { obj.from = clipPos(doc, from); }\n if (to) { obj.to = clipPos(doc, to); }\n if (text) { obj.text = text; }\n if (origin !== undefined) { obj.origin = origin; }\n }; }\n signal(doc, \"beforeChange\", doc, obj);\n if (doc.cm) { signal(doc.cm, \"beforeChange\", doc.cm, obj); }\n\n if (obj.canceled) {\n if (doc.cm) { doc.cm.curOp.updateInput = 2; }\n return null\n }\n return {from: obj.from, to: obj.to, text: obj.text, origin: obj.origin}\n }\n\n // Apply a change to a document, and add it to the document's\n // history, and propagating it to all linked documents.\n function makeChange(doc, change, ignoreReadOnly) {\n if (doc.cm) {\n if (!doc.cm.curOp) { return operation(doc.cm, makeChange)(doc, change, ignoreReadOnly) }\n if (doc.cm.state.suppressEdits) { return }\n }\n\n if (hasHandler(doc, \"beforeChange\") || doc.cm && hasHandler(doc.cm, \"beforeChange\")) {\n change = filterChange(doc, change, true);\n if (!change) { return }\n }\n\n // Possibly split or suppress the update based on the presence\n // of read-only spans in its range.\n var split = sawReadOnlySpans && !ignoreReadOnly && removeReadOnlyRanges(doc, change.from, change.to);\n if (split) {\n for (var i = split.length - 1; i >= 0; --i)\n { makeChangeInner(doc, {from: split[i].from, to: split[i].to, text: i ? [\"\"] : change.text, origin: change.origin}); }\n } else {\n makeChangeInner(doc, change);\n }\n }\n\n function makeChangeInner(doc, change) {\n if (change.text.length == 1 && change.text[0] == \"\" && cmp(change.from, change.to) == 0) { return }\n var selAfter = computeSelAfterChange(doc, change);\n addChangeToHistory(doc, change, selAfter, doc.cm ? doc.cm.curOp.id : NaN);\n\n makeChangeSingleDoc(doc, change, selAfter, stretchSpansOverChange(doc, change));\n var rebased = [];\n\n linkedDocs(doc, function (doc, sharedHist) {\n if (!sharedHist && indexOf(rebased, doc.history) == -1) {\n rebaseHist(doc.history, change);\n rebased.push(doc.history);\n }\n makeChangeSingleDoc(doc, change, null, stretchSpansOverChange(doc, change));\n });\n }\n\n // Revert a change stored in a document's history.\n function makeChangeFromHistory(doc, type, allowSelectionOnly) {\n var suppress = doc.cm && doc.cm.state.suppressEdits;\n if (suppress && !allowSelectionOnly) { return }\n\n var hist = doc.history, event, selAfter = doc.sel;\n var source = type == \"undo\" ? hist.done : hist.undone, dest = type == \"undo\" ? hist.undone : hist.done;\n\n // Verify that there is a useable event (so that ctrl-z won't\n // needlessly clear selection events)\n var i = 0;\n for (; i < source.length; i++) {\n event = source[i];\n if (allowSelectionOnly ? event.ranges && !event.equals(doc.sel) : !event.ranges)\n { break }\n }\n if (i == source.length) { return }\n hist.lastOrigin = hist.lastSelOrigin = null;\n\n for (;;) {\n event = source.pop();\n if (event.ranges) {\n pushSelectionToHistory(event, dest);\n if (allowSelectionOnly && !event.equals(doc.sel)) {\n setSelection(doc, event, {clearRedo: false});\n return\n }\n selAfter = event;\n } else if (suppress) {\n source.push(event);\n return\n } else { break }\n }\n\n // Build up a reverse change object to add to the opposite history\n // stack (redo when undoing, and vice versa).\n var antiChanges = [];\n pushSelectionToHistory(selAfter, dest);\n dest.push({changes: antiChanges, generation: hist.generation});\n hist.generation = event.generation || ++hist.maxGeneration;\n\n var filter = hasHandler(doc, \"beforeChange\") || doc.cm && hasHandler(doc.cm, \"beforeChange\");\n\n var loop = function ( i ) {\n var change = event.changes[i];\n change.origin = type;\n if (filter && !filterChange(doc, change, false)) {\n source.length = 0;\n return {}\n }\n\n antiChanges.push(historyChangeFromChange(doc, change));\n\n var after = i ? computeSelAfterChange(doc, change) : lst(source);\n makeChangeSingleDoc(doc, change, after, mergeOldSpans(doc, change));\n if (!i && doc.cm) { doc.cm.scrollIntoView({from: change.from, to: changeEnd(change)}); }\n var rebased = [];\n\n // Propagate to the linked documents\n linkedDocs(doc, function (doc, sharedHist) {\n if (!sharedHist && indexOf(rebased, doc.history) == -1) {\n rebaseHist(doc.history, change);\n rebased.push(doc.history);\n }\n makeChangeSingleDoc(doc, change, null, mergeOldSpans(doc, change));\n });\n };\n\n for (var i$1 = event.changes.length - 1; i$1 >= 0; --i$1) {\n var returned = loop( i$1 );\n\n if ( returned ) return returned.v;\n }\n }\n\n // Sub-views need their line numbers shifted when text is added\n // above or below them in the parent document.\n function shiftDoc(doc, distance) {\n if (distance == 0) { return }\n doc.first += distance;\n doc.sel = new Selection(map(doc.sel.ranges, function (range) { return new Range(\n Pos(range.anchor.line + distance, range.anchor.ch),\n Pos(range.head.line + distance, range.head.ch)\n ); }), doc.sel.primIndex);\n if (doc.cm) {\n regChange(doc.cm, doc.first, doc.first - distance, distance);\n for (var d = doc.cm.display, l = d.viewFrom; l < d.viewTo; l++)\n { regLineChange(doc.cm, l, \"gutter\"); }\n }\n }\n\n // More lower-level change function, handling only a single document\n // (not linked ones).\n function makeChangeSingleDoc(doc, change, selAfter, spans) {\n if (doc.cm && !doc.cm.curOp)\n { return operation(doc.cm, makeChangeSingleDoc)(doc, change, selAfter, spans) }\n\n if (change.to.line < doc.first) {\n shiftDoc(doc, change.text.length - 1 - (change.to.line - change.from.line));\n return\n }\n if (change.from.line > doc.lastLine()) { return }\n\n // Clip the change to the size of this doc\n if (change.from.line < doc.first) {\n var shift = change.text.length - 1 - (doc.first - change.from.line);\n shiftDoc(doc, shift);\n change = {from: Pos(doc.first, 0), to: Pos(change.to.line + shift, change.to.ch),\n text: [lst(change.text)], origin: change.origin};\n }\n var last = doc.lastLine();\n if (change.to.line > last) {\n change = {from: change.from, to: Pos(last, getLine(doc, last).text.length),\n text: [change.text[0]], origin: change.origin};\n }\n\n change.removed = getBetween(doc, change.from, change.to);\n\n if (!selAfter) { selAfter = computeSelAfterChange(doc, change); }\n if (doc.cm) { makeChangeSingleDocInEditor(doc.cm, change, spans); }\n else { updateDoc(doc, change, spans); }\n setSelectionNoUndo(doc, selAfter, sel_dontScroll);\n\n if (doc.cantEdit && skipAtomic(doc, Pos(doc.firstLine(), 0)))\n { doc.cantEdit = false; }\n }\n\n // Handle the interaction of a change to a document with the editor\n // that this document is part of.\n function makeChangeSingleDocInEditor(cm, change, spans) {\n var doc = cm.doc, display = cm.display, from = change.from, to = change.to;\n\n var recomputeMaxLength = false, checkWidthStart = from.line;\n if (!cm.options.lineWrapping) {\n checkWidthStart = lineNo(visualLine(getLine(doc, from.line)));\n doc.iter(checkWidthStart, to.line + 1, function (line) {\n if (line == display.maxLine) {\n recomputeMaxLength = true;\n return true\n }\n });\n }\n\n if (doc.sel.contains(change.from, change.to) > -1)\n { signalCursorActivity(cm); }\n\n updateDoc(doc, change, spans, estimateHeight(cm));\n\n if (!cm.options.lineWrapping) {\n doc.iter(checkWidthStart, from.line + change.text.length, function (line) {\n var len = lineLength(line);\n if (len > display.maxLineLength) {\n display.maxLine = line;\n display.maxLineLength = len;\n display.maxLineChanged = true;\n recomputeMaxLength = false;\n }\n });\n if (recomputeMaxLength) { cm.curOp.updateMaxLine = true; }\n }\n\n retreatFrontier(doc, from.line);\n startWorker(cm, 400);\n\n var lendiff = change.text.length - (to.line - from.line) - 1;\n // Remember that these lines changed, for updating the display\n if (change.full)\n { regChange(cm); }\n else if (from.line == to.line && change.text.length == 1 && !isWholeLineUpdate(cm.doc, change))\n { regLineChange(cm, from.line, \"text\"); }\n else\n { regChange(cm, from.line, to.line + 1, lendiff); }\n\n var changesHandler = hasHandler(cm, \"changes\"), changeHandler = hasHandler(cm, \"change\");\n if (changeHandler || changesHandler) {\n var obj = {\n from: from, to: to,\n text: change.text,\n removed: change.removed,\n origin: change.origin\n };\n if (changeHandler) { signalLater(cm, \"change\", cm, obj); }\n if (changesHandler) { (cm.curOp.changeObjs || (cm.curOp.changeObjs = [])).push(obj); }\n }\n cm.display.selForContextMenu = null;\n }\n\n function replaceRange(doc, code, from, to, origin) {\n var assign;\n\n if (!to) { to = from; }\n if (cmp(to, from) < 0) { (assign = [to, from], from = assign[0], to = assign[1]); }\n if (typeof code == \"string\") { code = doc.splitLines(code); }\n makeChange(doc, {from: from, to: to, text: code, origin: origin});\n }\n\n // Rebasing/resetting history to deal with externally-sourced changes\n\n function rebaseHistSelSingle(pos, from, to, diff) {\n if (to < pos.line) {\n pos.line += diff;\n } else if (from < pos.line) {\n pos.line = from;\n pos.ch = 0;\n }\n }\n\n // Tries to rebase an array of history events given a change in the\n // document. If the change touches the same lines as the event, the\n // event, and everything 'behind' it, is discarded. If the change is\n // before the event, the event's positions are updated. Uses a\n // copy-on-write scheme for the positions, to avoid having to\n // reallocate them all on every rebase, but also avoid problems with\n // shared position objects being unsafely updated.\n function rebaseHistArray(array, from, to, diff) {\n for (var i = 0; i < array.length; ++i) {\n var sub = array[i], ok = true;\n if (sub.ranges) {\n if (!sub.copied) { sub = array[i] = sub.deepCopy(); sub.copied = true; }\n for (var j = 0; j < sub.ranges.length; j++) {\n rebaseHistSelSingle(sub.ranges[j].anchor, from, to, diff);\n rebaseHistSelSingle(sub.ranges[j].head, from, to, diff);\n }\n continue\n }\n for (var j$1 = 0; j$1 < sub.changes.length; ++j$1) {\n var cur = sub.changes[j$1];\n if (to < cur.from.line) {\n cur.from = Pos(cur.from.line + diff, cur.from.ch);\n cur.to = Pos(cur.to.line + diff, cur.to.ch);\n } else if (from <= cur.to.line) {\n ok = false;\n break\n }\n }\n if (!ok) {\n array.splice(0, i + 1);\n i = 0;\n }\n }\n }\n\n function rebaseHist(hist, change) {\n var from = change.from.line, to = change.to.line, diff = change.text.length - (to - from) - 1;\n rebaseHistArray(hist.done, from, to, diff);\n rebaseHistArray(hist.undone, from, to, diff);\n }\n\n // Utility for applying a change to a line by handle or number,\n // returning the number and optionally registering the line as\n // changed.\n function changeLine(doc, handle, changeType, op) {\n var no = handle, line = handle;\n if (typeof handle == \"number\") { line = getLine(doc, clipLine(doc, handle)); }\n else { no = lineNo(handle); }\n if (no == null) { return null }\n if (op(line, no) && doc.cm) { regLineChange(doc.cm, no, changeType); }\n return line\n }\n\n // The document is represented as a BTree consisting of leaves, with\n // chunk of lines in them, and branches, with up to ten leaves or\n // other branch nodes below them. The top node is always a branch\n // node, and is the document object itself (meaning it has\n // additional methods and properties).\n //\n // All nodes have parent links. The tree is used both to go from\n // line numbers to line objects, and to go from objects to numbers.\n // It also indexes by height, and is used to convert between height\n // and line object, and to find the total height of the document.\n //\n // See also http://marijnhaverbeke.nl/blog/codemirror-line-tree.html\n\n function LeafChunk(lines) {\n this.lines = lines;\n this.parent = null;\n var height = 0;\n for (var i = 0; i < lines.length; ++i) {\n lines[i].parent = this;\n height += lines[i].height;\n }\n this.height = height;\n }\n\n LeafChunk.prototype = {\n chunkSize: function() { return this.lines.length },\n\n // Remove the n lines at offset 'at'.\n removeInner: function(at, n) {\n for (var i = at, e = at + n; i < e; ++i) {\n var line = this.lines[i];\n this.height -= line.height;\n cleanUpLine(line);\n signalLater(line, \"delete\");\n }\n this.lines.splice(at, n);\n },\n\n // Helper used to collapse a small branch into a single leaf.\n collapse: function(lines) {\n lines.push.apply(lines, this.lines);\n },\n\n // Insert the given array of lines at offset 'at', count them as\n // having the given height.\n insertInner: function(at, lines, height) {\n this.height += height;\n this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at));\n for (var i = 0; i < lines.length; ++i) { lines[i].parent = this; }\n },\n\n // Used to iterate over a part of the tree.\n iterN: function(at, n, op) {\n for (var e = at + n; at < e; ++at)\n { if (op(this.lines[at])) { return true } }\n }\n };\n\n function BranchChunk(children) {\n this.children = children;\n var size = 0, height = 0;\n for (var i = 0; i < children.length; ++i) {\n var ch = children[i];\n size += ch.chunkSize(); height += ch.height;\n ch.parent = this;\n }\n this.size = size;\n this.height = height;\n this.parent = null;\n }\n\n BranchChunk.prototype = {\n chunkSize: function() { return this.size },\n\n removeInner: function(at, n) {\n this.size -= n;\n for (var i = 0; i < this.children.length; ++i) {\n var child = this.children[i], sz = child.chunkSize();\n if (at < sz) {\n var rm = Math.min(n, sz - at), oldHeight = child.height;\n child.removeInner(at, rm);\n this.height -= oldHeight - child.height;\n if (sz == rm) { this.children.splice(i--, 1); child.parent = null; }\n if ((n -= rm) == 0) { break }\n at = 0;\n } else { at -= sz; }\n }\n // If the result is smaller than 25 lines, ensure that it is a\n // single leaf node.\n if (this.size - n < 25 &&\n (this.children.length > 1 || !(this.children[0] instanceof LeafChunk))) {\n var lines = [];\n this.collapse(lines);\n this.children = [new LeafChunk(lines)];\n this.children[0].parent = this;\n }\n },\n\n collapse: function(lines) {\n for (var i = 0; i < this.children.length; ++i) { this.children[i].collapse(lines); }\n },\n\n insertInner: function(at, lines, height) {\n this.size += lines.length;\n this.height += height;\n for (var i = 0; i < this.children.length; ++i) {\n var child = this.children[i], sz = child.chunkSize();\n if (at <= sz) {\n child.insertInner(at, lines, height);\n if (child.lines && child.lines.length > 50) {\n // To avoid memory thrashing when child.lines is huge (e.g. first view of a large file), it's never spliced.\n // Instead, small slices are taken. They're taken in order because sequential memory accesses are fastest.\n var remaining = child.lines.length % 25 + 25;\n for (var pos = remaining; pos < child.lines.length;) {\n var leaf = new LeafChunk(child.lines.slice(pos, pos += 25));\n child.height -= leaf.height;\n this.children.splice(++i, 0, leaf);\n leaf.parent = this;\n }\n child.lines = child.lines.slice(0, remaining);\n this.maybeSpill();\n }\n break\n }\n at -= sz;\n }\n },\n\n // When a node has grown, check whether it should be split.\n maybeSpill: function() {\n if (this.children.length <= 10) { return }\n var me = this;\n do {\n var spilled = me.children.splice(me.children.length - 5, 5);\n var sibling = new BranchChunk(spilled);\n if (!me.parent) { // Become the parent node\n var copy = new BranchChunk(me.children);\n copy.parent = me;\n me.children = [copy, sibling];\n me = copy;\n } else {\n me.size -= sibling.size;\n me.height -= sibling.height;\n var myIndex = indexOf(me.parent.children, me);\n me.parent.children.splice(myIndex + 1, 0, sibling);\n }\n sibling.parent = me.parent;\n } while (me.children.length > 10)\n me.parent.maybeSpill();\n },\n\n iterN: function(at, n, op) {\n for (var i = 0; i < this.children.length; ++i) {\n var child = this.children[i], sz = child.chunkSize();\n if (at < sz) {\n var used = Math.min(n, sz - at);\n if (child.iterN(at, used, op)) { return true }\n if ((n -= used) == 0) { break }\n at = 0;\n } else { at -= sz; }\n }\n }\n };\n\n // Line widgets are block elements displayed above or below a line.\n\n var LineWidget = function(doc, node, options) {\n if (options) { for (var opt in options) { if (options.hasOwnProperty(opt))\n { this[opt] = options[opt]; } } }\n this.doc = doc;\n this.node = node;\n };\n\n LineWidget.prototype.clear = function () {\n var cm = this.doc.cm, ws = this.line.widgets, line = this.line, no = lineNo(line);\n if (no == null || !ws) { return }\n for (var i = 0; i < ws.length; ++i) { if (ws[i] == this) { ws.splice(i--, 1); } }\n if (!ws.length) { line.widgets = null; }\n var height = widgetHeight(this);\n updateLineHeight(line, Math.max(0, line.height - height));\n if (cm) {\n runInOp(cm, function () {\n adjustScrollWhenAboveVisible(cm, line, -height);\n regLineChange(cm, no, \"widget\");\n });\n signalLater(cm, \"lineWidgetCleared\", cm, this, no);\n }\n };\n\n LineWidget.prototype.changed = function () {\n var this$1 = this;\n\n var oldH = this.height, cm = this.doc.cm, line = this.line;\n this.height = null;\n var diff = widgetHeight(this) - oldH;\n if (!diff) { return }\n if (!lineIsHidden(this.doc, line)) { updateLineHeight(line, line.height + diff); }\n if (cm) {\n runInOp(cm, function () {\n cm.curOp.forceUpdate = true;\n adjustScrollWhenAboveVisible(cm, line, diff);\n signalLater(cm, \"lineWidgetChanged\", cm, this$1, lineNo(line));\n });\n }\n };\n eventMixin(LineWidget);\n\n function adjustScrollWhenAboveVisible(cm, line, diff) {\n if (heightAtLine(line) < ((cm.curOp && cm.curOp.scrollTop) || cm.doc.scrollTop))\n { addToScrollTop(cm, diff); }\n }\n\n function addLineWidget(doc, handle, node, options) {\n var widget = new LineWidget(doc, node, options);\n var cm = doc.cm;\n if (cm && widget.noHScroll) { cm.display.alignWidgets = true; }\n changeLine(doc, handle, \"widget\", function (line) {\n var widgets = line.widgets || (line.widgets = []);\n if (widget.insertAt == null) { widgets.push(widget); }\n else { widgets.splice(Math.min(widgets.length, Math.max(0, widget.insertAt)), 0, widget); }\n widget.line = line;\n if (cm && !lineIsHidden(doc, line)) {\n var aboveVisible = heightAtLine(line) < doc.scrollTop;\n updateLineHeight(line, line.height + widgetHeight(widget));\n if (aboveVisible) { addToScrollTop(cm, widget.height); }\n cm.curOp.forceUpdate = true;\n }\n return true\n });\n if (cm) { signalLater(cm, \"lineWidgetAdded\", cm, widget, typeof handle == \"number\" ? handle : lineNo(handle)); }\n return widget\n }\n\n // TEXTMARKERS\n\n // Created with markText and setBookmark methods. A TextMarker is a\n // handle that can be used to clear or find a marked position in the\n // document. Line objects hold arrays (markedSpans) containing\n // {from, to, marker} object pointing to such marker objects, and\n // indicating that such a marker is present on that line. Multiple\n // lines may point to the same marker when it spans across lines.\n // The spans will have null for their from/to properties when the\n // marker continues beyond the start/end of the line. Markers have\n // links back to the lines they currently touch.\n\n // Collapsed markers have unique ids, in order to be able to order\n // them, which is needed for uniquely determining an outer marker\n // when they overlap (they may nest, but not partially overlap).\n var nextMarkerId = 0;\n\n var TextMarker = function(doc, type) {\n this.lines = [];\n this.type = type;\n this.doc = doc;\n this.id = ++nextMarkerId;\n };\n\n // Clear the marker.\n TextMarker.prototype.clear = function () {\n if (this.explicitlyCleared) { return }\n var cm = this.doc.cm, withOp = cm && !cm.curOp;\n if (withOp) { startOperation(cm); }\n if (hasHandler(this, \"clear\")) {\n var found = this.find();\n if (found) { signalLater(this, \"clear\", found.from, found.to); }\n }\n var min = null, max = null;\n for (var i = 0; i < this.lines.length; ++i) {\n var line = this.lines[i];\n var span = getMarkedSpanFor(line.markedSpans, this);\n if (cm && !this.collapsed) { regLineChange(cm, lineNo(line), \"text\"); }\n else if (cm) {\n if (span.to != null) { max = lineNo(line); }\n if (span.from != null) { min = lineNo(line); }\n }\n line.markedSpans = removeMarkedSpan(line.markedSpans, span);\n if (span.from == null && this.collapsed && !lineIsHidden(this.doc, line) && cm)\n { updateLineHeight(line, textHeight(cm.display)); }\n }\n if (cm && this.collapsed && !cm.options.lineWrapping) { for (var i$1 = 0; i$1 < this.lines.length; ++i$1) {\n var visual = visualLine(this.lines[i$1]), len = lineLength(visual);\n if (len > cm.display.maxLineLength) {\n cm.display.maxLine = visual;\n cm.display.maxLineLength = len;\n cm.display.maxLineChanged = true;\n }\n } }\n\n if (min != null && cm && this.collapsed) { regChange(cm, min, max + 1); }\n this.lines.length = 0;\n this.explicitlyCleared = true;\n if (this.atomic && this.doc.cantEdit) {\n this.doc.cantEdit = false;\n if (cm) { reCheckSelection(cm.doc); }\n }\n if (cm) { signalLater(cm, \"markerCleared\", cm, this, min, max); }\n if (withOp) { endOperation(cm); }\n if (this.parent) { this.parent.clear(); }\n };\n\n // Find the position of the marker in the document. Returns a {from,\n // to} object by default. Side can be passed to get a specific side\n // -- 0 (both), -1 (left), or 1 (right). When lineObj is true, the\n // Pos objects returned contain a line object, rather than a line\n // number (used to prevent looking up the same line twice).\n TextMarker.prototype.find = function (side, lineObj) {\n if (side == null && this.type == \"bookmark\") { side = 1; }\n var from, to;\n for (var i = 0; i < this.lines.length; ++i) {\n var line = this.lines[i];\n var span = getMarkedSpanFor(line.markedSpans, this);\n if (span.from != null) {\n from = Pos(lineObj ? line : lineNo(line), span.from);\n if (side == -1) { return from }\n }\n if (span.to != null) {\n to = Pos(lineObj ? line : lineNo(line), span.to);\n if (side == 1) { return to }\n }\n }\n return from && {from: from, to: to}\n };\n\n // Signals that the marker's widget changed, and surrounding layout\n // should be recomputed.\n TextMarker.prototype.changed = function () {\n var this$1 = this;\n\n var pos = this.find(-1, true), widget = this, cm = this.doc.cm;\n if (!pos || !cm) { return }\n runInOp(cm, function () {\n var line = pos.line, lineN = lineNo(pos.line);\n var view = findViewForLine(cm, lineN);\n if (view) {\n clearLineMeasurementCacheFor(view);\n cm.curOp.selectionChanged = cm.curOp.forceUpdate = true;\n }\n cm.curOp.updateMaxLine = true;\n if (!lineIsHidden(widget.doc, line) && widget.height != null) {\n var oldHeight = widget.height;\n widget.height = null;\n var dHeight = widgetHeight(widget) - oldHeight;\n if (dHeight)\n { updateLineHeight(line, line.height + dHeight); }\n }\n signalLater(cm, \"markerChanged\", cm, this$1);\n });\n };\n\n TextMarker.prototype.attachLine = function (line) {\n if (!this.lines.length && this.doc.cm) {\n var op = this.doc.cm.curOp;\n if (!op.maybeHiddenMarkers || indexOf(op.maybeHiddenMarkers, this) == -1)\n { (op.maybeUnhiddenMarkers || (op.maybeUnhiddenMarkers = [])).push(this); }\n }\n this.lines.push(line);\n };\n\n TextMarker.prototype.detachLine = function (line) {\n this.lines.splice(indexOf(this.lines, line), 1);\n if (!this.lines.length && this.doc.cm) {\n var op = this.doc.cm.curOp\n ;(op.maybeHiddenMarkers || (op.maybeHiddenMarkers = [])).push(this);\n }\n };\n eventMixin(TextMarker);\n\n // Create a marker, wire it up to the right lines, and\n function markText(doc, from, to, options, type) {\n // Shared markers (across linked documents) are handled separately\n // (markTextShared will call out to this again, once per\n // document).\n if (options && options.shared) { return markTextShared(doc, from, to, options, type) }\n // Ensure we are in an operation.\n if (doc.cm && !doc.cm.curOp) { return operation(doc.cm, markText)(doc, from, to, options, type) }\n\n var marker = new TextMarker(doc, type), diff = cmp(from, to);\n if (options) { copyObj(options, marker, false); }\n // Don't connect empty markers unless clearWhenEmpty is false\n if (diff > 0 || diff == 0 && marker.clearWhenEmpty !== false)\n { return marker }\n if (marker.replacedWith) {\n // Showing up as a widget implies collapsed (widget replaces text)\n marker.collapsed = true;\n marker.widgetNode = eltP(\"span\", [marker.replacedWith], \"CodeMirror-widget\");\n if (!options.handleMouseEvents) { marker.widgetNode.setAttribute(\"cm-ignore-events\", \"true\"); }\n if (options.insertLeft) { marker.widgetNode.insertLeft = true; }\n }\n if (marker.collapsed) {\n if (conflictingCollapsedRange(doc, from.line, from, to, marker) ||\n from.line != to.line && conflictingCollapsedRange(doc, to.line, from, to, marker))\n { throw new Error(\"Inserting collapsed marker partially overlapping an existing one\") }\n seeCollapsedSpans();\n }\n\n if (marker.addToHistory)\n { addChangeToHistory(doc, {from: from, to: to, origin: \"markText\"}, doc.sel, NaN); }\n\n var curLine = from.line, cm = doc.cm, updateMaxLine;\n doc.iter(curLine, to.line + 1, function (line) {\n if (cm && marker.collapsed && !cm.options.lineWrapping && visualLine(line) == cm.display.maxLine)\n { updateMaxLine = true; }\n if (marker.collapsed && curLine != from.line) { updateLineHeight(line, 0); }\n addMarkedSpan(line, new MarkedSpan(marker,\n curLine == from.line ? from.ch : null,\n curLine == to.line ? to.ch : null), doc.cm && doc.cm.curOp);\n ++curLine;\n });\n // lineIsHidden depends on the presence of the spans, so needs a second pass\n if (marker.collapsed) { doc.iter(from.line, to.line + 1, function (line) {\n if (lineIsHidden(doc, line)) { updateLineHeight(line, 0); }\n }); }\n\n if (marker.clearOnEnter) { on(marker, \"beforeCursorEnter\", function () { return marker.clear(); }); }\n\n if (marker.readOnly) {\n seeReadOnlySpans();\n if (doc.history.done.length || doc.history.undone.length)\n { doc.clearHistory(); }\n }\n if (marker.collapsed) {\n marker.id = ++nextMarkerId;\n marker.atomic = true;\n }\n if (cm) {\n // Sync editor state\n if (updateMaxLine) { cm.curOp.updateMaxLine = true; }\n if (marker.collapsed)\n { regChange(cm, from.line, to.line + 1); }\n else if (marker.className || marker.startStyle || marker.endStyle || marker.css ||\n marker.attributes || marker.title)\n { for (var i = from.line; i <= to.line; i++) { regLineChange(cm, i, \"text\"); } }\n if (marker.atomic) { reCheckSelection(cm.doc); }\n signalLater(cm, \"markerAdded\", cm, marker);\n }\n return marker\n }\n\n // SHARED TEXTMARKERS\n\n // A shared marker spans multiple linked documents. It is\n // implemented as a meta-marker-object controlling multiple normal\n // markers.\n var SharedTextMarker = function(markers, primary) {\n this.markers = markers;\n this.primary = primary;\n for (var i = 0; i < markers.length; ++i)\n { markers[i].parent = this; }\n };\n\n SharedTextMarker.prototype.clear = function () {\n if (this.explicitlyCleared) { return }\n this.explicitlyCleared = true;\n for (var i = 0; i < this.markers.length; ++i)\n { this.markers[i].clear(); }\n signalLater(this, \"clear\");\n };\n\n SharedTextMarker.prototype.find = function (side, lineObj) {\n return this.primary.find(side, lineObj)\n };\n eventMixin(SharedTextMarker);\n\n function markTextShared(doc, from, to, options, type) {\n options = copyObj(options);\n options.shared = false;\n var markers = [markText(doc, from, to, options, type)], primary = markers[0];\n var widget = options.widgetNode;\n linkedDocs(doc, function (doc) {\n if (widget) { options.widgetNode = widget.cloneNode(true); }\n markers.push(markText(doc, clipPos(doc, from), clipPos(doc, to), options, type));\n for (var i = 0; i < doc.linked.length; ++i)\n { if (doc.linked[i].isParent) { return } }\n primary = lst(markers);\n });\n return new SharedTextMarker(markers, primary)\n }\n\n function findSharedMarkers(doc) {\n return doc.findMarks(Pos(doc.first, 0), doc.clipPos(Pos(doc.lastLine())), function (m) { return m.parent; })\n }\n\n function copySharedMarkers(doc, markers) {\n for (var i = 0; i < markers.length; i++) {\n var marker = markers[i], pos = marker.find();\n var mFrom = doc.clipPos(pos.from), mTo = doc.clipPos(pos.to);\n if (cmp(mFrom, mTo)) {\n var subMark = markText(doc, mFrom, mTo, marker.primary, marker.primary.type);\n marker.markers.push(subMark);\n subMark.parent = marker;\n }\n }\n }\n\n function detachSharedMarkers(markers) {\n var loop = function ( i ) {\n var marker = markers[i], linked = [marker.primary.doc];\n linkedDocs(marker.primary.doc, function (d) { return linked.push(d); });\n for (var j = 0; j < marker.markers.length; j++) {\n var subMarker = marker.markers[j];\n if (indexOf(linked, subMarker.doc) == -1) {\n subMarker.parent = null;\n marker.markers.splice(j--, 1);\n }\n }\n };\n\n for (var i = 0; i < markers.length; i++) loop( i );\n }\n\n var nextDocId = 0;\n var Doc = function(text, mode, firstLine, lineSep, direction) {\n if (!(this instanceof Doc)) { return new Doc(text, mode, firstLine, lineSep, direction) }\n if (firstLine == null) { firstLine = 0; }\n\n BranchChunk.call(this, [new LeafChunk([new Line(\"\", null)])]);\n this.first = firstLine;\n this.scrollTop = this.scrollLeft = 0;\n this.cantEdit = false;\n this.cleanGeneration = 1;\n this.modeFrontier = this.highlightFrontier = firstLine;\n var start = Pos(firstLine, 0);\n this.sel = simpleSelection(start);\n this.history = new History(null);\n this.id = ++nextDocId;\n this.modeOption = mode;\n this.lineSep = lineSep;\n this.direction = (direction == \"rtl\") ? \"rtl\" : \"ltr\";\n this.extend = false;\n\n if (typeof text == \"string\") { text = this.splitLines(text); }\n updateDoc(this, {from: start, to: start, text: text});\n setSelection(this, simpleSelection(start), sel_dontScroll);\n };\n\n Doc.prototype = createObj(BranchChunk.prototype, {\n constructor: Doc,\n // Iterate over the document. Supports two forms -- with only one\n // argument, it calls that for each line in the document. With\n // three, it iterates over the range given by the first two (with\n // the second being non-inclusive).\n iter: function(from, to, op) {\n if (op) { this.iterN(from - this.first, to - from, op); }\n else { this.iterN(this.first, this.first + this.size, from); }\n },\n\n // Non-public interface for adding and removing lines.\n insert: function(at, lines) {\n var height = 0;\n for (var i = 0; i < lines.length; ++i) { height += lines[i].height; }\n this.insertInner(at - this.first, lines, height);\n },\n remove: function(at, n) { this.removeInner(at - this.first, n); },\n\n // From here, the methods are part of the public interface. Most\n // are also available from CodeMirror (editor) instances.\n\n getValue: function(lineSep) {\n var lines = getLines(this, this.first, this.first + this.size);\n if (lineSep === false) { return lines }\n return lines.join(lineSep || this.lineSeparator())\n },\n setValue: docMethodOp(function(code) {\n var top = Pos(this.first, 0), last = this.first + this.size - 1;\n makeChange(this, {from: top, to: Pos(last, getLine(this, last).text.length),\n text: this.splitLines(code), origin: \"setValue\", full: true}, true);\n if (this.cm) { scrollToCoords(this.cm, 0, 0); }\n setSelection(this, simpleSelection(top), sel_dontScroll);\n }),\n replaceRange: function(code, from, to, origin) {\n from = clipPos(this, from);\n to = to ? clipPos(this, to) : from;\n replaceRange(this, code, from, to, origin);\n },\n getRange: function(from, to, lineSep) {\n var lines = getBetween(this, clipPos(this, from), clipPos(this, to));\n if (lineSep === false) { return lines }\n if (lineSep === '') { return lines.join('') }\n return lines.join(lineSep || this.lineSeparator())\n },\n\n getLine: function(line) {var l = this.getLineHandle(line); return l && l.text},\n\n getLineHandle: function(line) {if (isLine(this, line)) { return getLine(this, line) }},\n getLineNumber: function(line) {return lineNo(line)},\n\n getLineHandleVisualStart: function(line) {\n if (typeof line == \"number\") { line = getLine(this, line); }\n return visualLine(line)\n },\n\n lineCount: function() {return this.size},\n firstLine: function() {return this.first},\n lastLine: function() {return this.first + this.size - 1},\n\n clipPos: function(pos) {return clipPos(this, pos)},\n\n getCursor: function(start) {\n var range = this.sel.primary(), pos;\n if (start == null || start == \"head\") { pos = range.head; }\n else if (start == \"anchor\") { pos = range.anchor; }\n else if (start == \"end\" || start == \"to\" || start === false) { pos = range.to(); }\n else { pos = range.from(); }\n return pos\n },\n listSelections: function() { return this.sel.ranges },\n somethingSelected: function() {return this.sel.somethingSelected()},\n\n setCursor: docMethodOp(function(line, ch, options) {\n setSimpleSelection(this, clipPos(this, typeof line == \"number\" ? Pos(line, ch || 0) : line), null, options);\n }),\n setSelection: docMethodOp(function(anchor, head, options) {\n setSimpleSelection(this, clipPos(this, anchor), clipPos(this, head || anchor), options);\n }),\n extendSelection: docMethodOp(function(head, other, options) {\n extendSelection(this, clipPos(this, head), other && clipPos(this, other), options);\n }),\n extendSelections: docMethodOp(function(heads, options) {\n extendSelections(this, clipPosArray(this, heads), options);\n }),\n extendSelectionsBy: docMethodOp(function(f, options) {\n var heads = map(this.sel.ranges, f);\n extendSelections(this, clipPosArray(this, heads), options);\n }),\n setSelections: docMethodOp(function(ranges, primary, options) {\n if (!ranges.length) { return }\n var out = [];\n for (var i = 0; i < ranges.length; i++)\n { out[i] = new Range(clipPos(this, ranges[i].anchor),\n clipPos(this, ranges[i].head || ranges[i].anchor)); }\n if (primary == null) { primary = Math.min(ranges.length - 1, this.sel.primIndex); }\n setSelection(this, normalizeSelection(this.cm, out, primary), options);\n }),\n addSelection: docMethodOp(function(anchor, head, options) {\n var ranges = this.sel.ranges.slice(0);\n ranges.push(new Range(clipPos(this, anchor), clipPos(this, head || anchor)));\n setSelection(this, normalizeSelection(this.cm, ranges, ranges.length - 1), options);\n }),\n\n getSelection: function(lineSep) {\n var ranges = this.sel.ranges, lines;\n for (var i = 0; i < ranges.length; i++) {\n var sel = getBetween(this, ranges[i].from(), ranges[i].to());\n lines = lines ? lines.concat(sel) : sel;\n }\n if (lineSep === false) { return lines }\n else { return lines.join(lineSep || this.lineSeparator()) }\n },\n getSelections: function(lineSep) {\n var parts = [], ranges = this.sel.ranges;\n for (var i = 0; i < ranges.length; i++) {\n var sel = getBetween(this, ranges[i].from(), ranges[i].to());\n if (lineSep !== false) { sel = sel.join(lineSep || this.lineSeparator()); }\n parts[i] = sel;\n }\n return parts\n },\n replaceSelection: function(code, collapse, origin) {\n var dup = [];\n for (var i = 0; i < this.sel.ranges.length; i++)\n { dup[i] = code; }\n this.replaceSelections(dup, collapse, origin || \"+input\");\n },\n replaceSelections: docMethodOp(function(code, collapse, origin) {\n var changes = [], sel = this.sel;\n for (var i = 0; i < sel.ranges.length; i++) {\n var range = sel.ranges[i];\n changes[i] = {from: range.from(), to: range.to(), text: this.splitLines(code[i]), origin: origin};\n }\n var newSel = collapse && collapse != \"end\" && computeReplacedSel(this, changes, collapse);\n for (var i$1 = changes.length - 1; i$1 >= 0; i$1--)\n { makeChange(this, changes[i$1]); }\n if (newSel) { setSelectionReplaceHistory(this, newSel); }\n else if (this.cm) { ensureCursorVisible(this.cm); }\n }),\n undo: docMethodOp(function() {makeChangeFromHistory(this, \"undo\");}),\n redo: docMethodOp(function() {makeChangeFromHistory(this, \"redo\");}),\n undoSelection: docMethodOp(function() {makeChangeFromHistory(this, \"undo\", true);}),\n redoSelection: docMethodOp(function() {makeChangeFromHistory(this, \"redo\", true);}),\n\n setExtending: function(val) {this.extend = val;},\n getExtending: function() {return this.extend},\n\n historySize: function() {\n var hist = this.history, done = 0, undone = 0;\n for (var i = 0; i < hist.done.length; i++) { if (!hist.done[i].ranges) { ++done; } }\n for (var i$1 = 0; i$1 < hist.undone.length; i$1++) { if (!hist.undone[i$1].ranges) { ++undone; } }\n return {undo: done, redo: undone}\n },\n clearHistory: function() {\n var this$1 = this;\n\n this.history = new History(this.history);\n linkedDocs(this, function (doc) { return doc.history = this$1.history; }, true);\n },\n\n markClean: function() {\n this.cleanGeneration = this.changeGeneration(true);\n },\n changeGeneration: function(forceSplit) {\n if (forceSplit)\n { this.history.lastOp = this.history.lastSelOp = this.history.lastOrigin = null; }\n return this.history.generation\n },\n isClean: function (gen) {\n return this.history.generation == (gen || this.cleanGeneration)\n },\n\n getHistory: function() {\n return {done: copyHistoryArray(this.history.done),\n undone: copyHistoryArray(this.history.undone)}\n },\n setHistory: function(histData) {\n var hist = this.history = new History(this.history);\n hist.done = copyHistoryArray(histData.done.slice(0), null, true);\n hist.undone = copyHistoryArray(histData.undone.slice(0), null, true);\n },\n\n setGutterMarker: docMethodOp(function(line, gutterID, value) {\n return changeLine(this, line, \"gutter\", function (line) {\n var markers = line.gutterMarkers || (line.gutterMarkers = {});\n markers[gutterID] = value;\n if (!value && isEmpty(markers)) { line.gutterMarkers = null; }\n return true\n })\n }),\n\n clearGutter: docMethodOp(function(gutterID) {\n var this$1 = this;\n\n this.iter(function (line) {\n if (line.gutterMarkers && line.gutterMarkers[gutterID]) {\n changeLine(this$1, line, \"gutter\", function () {\n line.gutterMarkers[gutterID] = null;\n if (isEmpty(line.gutterMarkers)) { line.gutterMarkers = null; }\n return true\n });\n }\n });\n }),\n\n lineInfo: function(line) {\n var n;\n if (typeof line == \"number\") {\n if (!isLine(this, line)) { return null }\n n = line;\n line = getLine(this, line);\n if (!line) { return null }\n } else {\n n = lineNo(line);\n if (n == null) { return null }\n }\n return {line: n, handle: line, text: line.text, gutterMarkers: line.gutterMarkers,\n textClass: line.textClass, bgClass: line.bgClass, wrapClass: line.wrapClass,\n widgets: line.widgets}\n },\n\n addLineClass: docMethodOp(function(handle, where, cls) {\n return changeLine(this, handle, where == \"gutter\" ? \"gutter\" : \"class\", function (line) {\n var prop = where == \"text\" ? \"textClass\"\n : where == \"background\" ? \"bgClass\"\n : where == \"gutter\" ? \"gutterClass\" : \"wrapClass\";\n if (!line[prop]) { line[prop] = cls; }\n else if (classTest(cls).test(line[prop])) { return false }\n else { line[prop] += \" \" + cls; }\n return true\n })\n }),\n removeLineClass: docMethodOp(function(handle, where, cls) {\n return changeLine(this, handle, where == \"gutter\" ? \"gutter\" : \"class\", function (line) {\n var prop = where == \"text\" ? \"textClass\"\n : where == \"background\" ? \"bgClass\"\n : where == \"gutter\" ? \"gutterClass\" : \"wrapClass\";\n var cur = line[prop];\n if (!cur) { return false }\n else if (cls == null) { line[prop] = null; }\n else {\n var found = cur.match(classTest(cls));\n if (!found) { return false }\n var end = found.index + found[0].length;\n line[prop] = cur.slice(0, found.index) + (!found.index || end == cur.length ? \"\" : \" \") + cur.slice(end) || null;\n }\n return true\n })\n }),\n\n addLineWidget: docMethodOp(function(handle, node, options) {\n return addLineWidget(this, handle, node, options)\n }),\n removeLineWidget: function(widget) { widget.clear(); },\n\n markText: function(from, to, options) {\n return markText(this, clipPos(this, from), clipPos(this, to), options, options && options.type || \"range\")\n },\n setBookmark: function(pos, options) {\n var realOpts = {replacedWith: options && (options.nodeType == null ? options.widget : options),\n insertLeft: options && options.insertLeft,\n clearWhenEmpty: false, shared: options && options.shared,\n handleMouseEvents: options && options.handleMouseEvents};\n pos = clipPos(this, pos);\n return markText(this, pos, pos, realOpts, \"bookmark\")\n },\n findMarksAt: function(pos) {\n pos = clipPos(this, pos);\n var markers = [], spans = getLine(this, pos.line).markedSpans;\n if (spans) { for (var i = 0; i < spans.length; ++i) {\n var span = spans[i];\n if ((span.from == null || span.from <= pos.ch) &&\n (span.to == null || span.to >= pos.ch))\n { markers.push(span.marker.parent || span.marker); }\n } }\n return markers\n },\n findMarks: function(from, to, filter) {\n from = clipPos(this, from); to = clipPos(this, to);\n var found = [], lineNo = from.line;\n this.iter(from.line, to.line + 1, function (line) {\n var spans = line.markedSpans;\n if (spans) { for (var i = 0; i < spans.length; i++) {\n var span = spans[i];\n if (!(span.to != null && lineNo == from.line && from.ch >= span.to ||\n span.from == null && lineNo != from.line ||\n span.from != null && lineNo == to.line && span.from >= to.ch) &&\n (!filter || filter(span.marker)))\n { found.push(span.marker.parent || span.marker); }\n } }\n ++lineNo;\n });\n return found\n },\n getAllMarks: function() {\n var markers = [];\n this.iter(function (line) {\n var sps = line.markedSpans;\n if (sps) { for (var i = 0; i < sps.length; ++i)\n { if (sps[i].from != null) { markers.push(sps[i].marker); } } }\n });\n return markers\n },\n\n posFromIndex: function(off) {\n var ch, lineNo = this.first, sepSize = this.lineSeparator().length;\n this.iter(function (line) {\n var sz = line.text.length + sepSize;\n if (sz > off) { ch = off; return true }\n off -= sz;\n ++lineNo;\n });\n return clipPos(this, Pos(lineNo, ch))\n },\n indexFromPos: function (coords) {\n coords = clipPos(this, coords);\n var index = coords.ch;\n if (coords.line < this.first || coords.ch < 0) { return 0 }\n var sepSize = this.lineSeparator().length;\n this.iter(this.first, coords.line, function (line) { // iter aborts when callback returns a truthy value\n index += line.text.length + sepSize;\n });\n return index\n },\n\n copy: function(copyHistory) {\n var doc = new Doc(getLines(this, this.first, this.first + this.size),\n this.modeOption, this.first, this.lineSep, this.direction);\n doc.scrollTop = this.scrollTop; doc.scrollLeft = this.scrollLeft;\n doc.sel = this.sel;\n doc.extend = false;\n if (copyHistory) {\n doc.history.undoDepth = this.history.undoDepth;\n doc.setHistory(this.getHistory());\n }\n return doc\n },\n\n linkedDoc: function(options) {\n if (!options) { options = {}; }\n var from = this.first, to = this.first + this.size;\n if (options.from != null && options.from > from) { from = options.from; }\n if (options.to != null && options.to < to) { to = options.to; }\n var copy = new Doc(getLines(this, from, to), options.mode || this.modeOption, from, this.lineSep, this.direction);\n if (options.sharedHist) { copy.history = this.history\n ; }(this.linked || (this.linked = [])).push({doc: copy, sharedHist: options.sharedHist});\n copy.linked = [{doc: this, isParent: true, sharedHist: options.sharedHist}];\n copySharedMarkers(copy, findSharedMarkers(this));\n return copy\n },\n unlinkDoc: function(other) {\n if (other instanceof CodeMirror) { other = other.doc; }\n if (this.linked) { for (var i = 0; i < this.linked.length; ++i) {\n var link = this.linked[i];\n if (link.doc != other) { continue }\n this.linked.splice(i, 1);\n other.unlinkDoc(this);\n detachSharedMarkers(findSharedMarkers(this));\n break\n } }\n // If the histories were shared, split them again\n if (other.history == this.history) {\n var splitIds = [other.id];\n linkedDocs(other, function (doc) { return splitIds.push(doc.id); }, true);\n other.history = new History(null);\n other.history.done = copyHistoryArray(this.history.done, splitIds);\n other.history.undone = copyHistoryArray(this.history.undone, splitIds);\n }\n },\n iterLinkedDocs: function(f) {linkedDocs(this, f);},\n\n getMode: function() {return this.mode},\n getEditor: function() {return this.cm},\n\n splitLines: function(str) {\n if (this.lineSep) { return str.split(this.lineSep) }\n return splitLinesAuto(str)\n },\n lineSeparator: function() { return this.lineSep || \"\\n\" },\n\n setDirection: docMethodOp(function (dir) {\n if (dir != \"rtl\") { dir = \"ltr\"; }\n if (dir == this.direction) { return }\n this.direction = dir;\n this.iter(function (line) { return line.order = null; });\n if (this.cm) { directionChanged(this.cm); }\n })\n });\n\n // Public alias.\n Doc.prototype.eachLine = Doc.prototype.iter;\n\n // Kludge to work around strange IE behavior where it'll sometimes\n // re-fire a series of drag-related events right after the drop (#1551)\n var lastDrop = 0;\n\n function onDrop(e) {\n var cm = this;\n clearDragCursor(cm);\n if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e))\n { return }\n e_preventDefault(e);\n if (ie) { lastDrop = +new Date; }\n var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files;\n if (!pos || cm.isReadOnly()) { return }\n // Might be a file drop, in which case we simply extract the text\n // and insert it.\n if (files && files.length && window.FileReader && window.File) {\n var n = files.length, text = Array(n), read = 0;\n var markAsReadAndPasteIfAllFilesAreRead = function () {\n if (++read == n) {\n operation(cm, function () {\n pos = clipPos(cm.doc, pos);\n var change = {from: pos, to: pos,\n text: cm.doc.splitLines(\n text.filter(function (t) { return t != null; }).join(cm.doc.lineSeparator())),\n origin: \"paste\"};\n makeChange(cm.doc, change);\n setSelectionReplaceHistory(cm.doc, simpleSelection(clipPos(cm.doc, pos), clipPos(cm.doc, changeEnd(change))));\n })();\n }\n };\n var readTextFromFile = function (file, i) {\n if (cm.options.allowDropFileTypes &&\n indexOf(cm.options.allowDropFileTypes, file.type) == -1) {\n markAsReadAndPasteIfAllFilesAreRead();\n return\n }\n var reader = new FileReader;\n reader.onerror = function () { return markAsReadAndPasteIfAllFilesAreRead(); };\n reader.onload = function () {\n var content = reader.result;\n if (/[\\x00-\\x08\\x0e-\\x1f]{2}/.test(content)) {\n markAsReadAndPasteIfAllFilesAreRead();\n return\n }\n text[i] = content;\n markAsReadAndPasteIfAllFilesAreRead();\n };\n reader.readAsText(file);\n };\n for (var i = 0; i < files.length; i++) { readTextFromFile(files[i], i); }\n } else { // Normal drop\n // Don't do a replace if the drop happened inside of the selected text.\n if (cm.state.draggingText && cm.doc.sel.contains(pos) > -1) {\n cm.state.draggingText(e);\n // Ensure the editor is re-focused\n setTimeout(function () { return cm.display.input.focus(); }, 20);\n return\n }\n try {\n var text$1 = e.dataTransfer.getData(\"Text\");\n if (text$1) {\n var selected;\n if (cm.state.draggingText && !cm.state.draggingText.copy)\n { selected = cm.listSelections(); }\n setSelectionNoUndo(cm.doc, simpleSelection(pos, pos));\n if (selected) { for (var i$1 = 0; i$1 < selected.length; ++i$1)\n { replaceRange(cm.doc, \"\", selected[i$1].anchor, selected[i$1].head, \"drag\"); } }\n cm.replaceSelection(text$1, \"around\", \"paste\");\n cm.display.input.focus();\n }\n }\n catch(e$1){}\n }\n }\n\n function onDragStart(cm, e) {\n if (ie && (!cm.state.draggingText || +new Date - lastDrop < 100)) { e_stop(e); return }\n if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) { return }\n\n e.dataTransfer.setData(\"Text\", cm.getSelection());\n e.dataTransfer.effectAllowed = \"copyMove\";\n\n // Use dummy image instead of default browsers image.\n // Recent Safari (~6.0.2) have a tendency to segfault when this happens, so we don't do it there.\n if (e.dataTransfer.setDragImage && !safari) {\n var img = elt(\"img\", null, null, \"position: fixed; left: 0; top: 0;\");\n img.src = \"data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\";\n if (presto) {\n img.width = img.height = 1;\n cm.display.wrapper.appendChild(img);\n // Force a relayout, or Opera won't use our image for some obscure reason\n img._top = img.offsetTop;\n }\n e.dataTransfer.setDragImage(img, 0, 0);\n if (presto) { img.parentNode.removeChild(img); }\n }\n }\n\n function onDragOver(cm, e) {\n var pos = posFromMouse(cm, e);\n if (!pos) { return }\n var frag = document.createDocumentFragment();\n drawSelectionCursor(cm, pos, frag);\n if (!cm.display.dragCursor) {\n cm.display.dragCursor = elt(\"div\", null, \"CodeMirror-cursors CodeMirror-dragcursors\");\n cm.display.lineSpace.insertBefore(cm.display.dragCursor, cm.display.cursorDiv);\n }\n removeChildrenAndAdd(cm.display.dragCursor, frag);\n }\n\n function clearDragCursor(cm) {\n if (cm.display.dragCursor) {\n cm.display.lineSpace.removeChild(cm.display.dragCursor);\n cm.display.dragCursor = null;\n }\n }\n\n // These must be handled carefully, because naively registering a\n // handler for each editor will cause the editors to never be\n // garbage collected.\n\n function forEachCodeMirror(f) {\n if (!document.getElementsByClassName) { return }\n var byClass = document.getElementsByClassName(\"CodeMirror\"), editors = [];\n for (var i = 0; i < byClass.length; i++) {\n var cm = byClass[i].CodeMirror;\n if (cm) { editors.push(cm); }\n }\n if (editors.length) { editors[0].operation(function () {\n for (var i = 0; i < editors.length; i++) { f(editors[i]); }\n }); }\n }\n\n var globalsRegistered = false;\n function ensureGlobalHandlers() {\n if (globalsRegistered) { return }\n registerGlobalHandlers();\n globalsRegistered = true;\n }\n function registerGlobalHandlers() {\n // When the window resizes, we need to refresh active editors.\n var resizeTimer;\n on(window, \"resize\", function () {\n if (resizeTimer == null) { resizeTimer = setTimeout(function () {\n resizeTimer = null;\n forEachCodeMirror(onResize);\n }, 100); }\n });\n // When the window loses focus, we want to show the editor as blurred\n on(window, \"blur\", function () { return forEachCodeMirror(onBlur); });\n }\n // Called when the window resizes\n function onResize(cm) {\n var d = cm.display;\n // Might be a text scaling operation, clear size caches.\n d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null;\n d.scrollbarsClipped = false;\n cm.setSize();\n }\n\n var keyNames = {\n 3: \"Pause\", 8: \"Backspace\", 9: \"Tab\", 13: \"Enter\", 16: \"Shift\", 17: \"Ctrl\", 18: \"Alt\",\n 19: \"Pause\", 20: \"CapsLock\", 27: \"Esc\", 32: \"Space\", 33: \"PageUp\", 34: \"PageDown\", 35: \"End\",\n 36: \"Home\", 37: \"Left\", 38: \"Up\", 39: \"Right\", 40: \"Down\", 44: \"PrintScrn\", 45: \"Insert\",\n 46: \"Delete\", 59: \";\", 61: \"=\", 91: \"Mod\", 92: \"Mod\", 93: \"Mod\",\n 106: \"*\", 107: \"=\", 109: \"-\", 110: \".\", 111: \"/\", 145: \"ScrollLock\",\n 173: \"-\", 186: \";\", 187: \"=\", 188: \",\", 189: \"-\", 190: \".\", 191: \"/\", 192: \"`\", 219: \"[\", 220: \"\\\\\",\n 221: \"]\", 222: \"'\", 224: \"Mod\", 63232: \"Up\", 63233: \"Down\", 63234: \"Left\", 63235: \"Right\", 63272: \"Delete\",\n 63273: \"Home\", 63275: \"End\", 63276: \"PageUp\", 63277: \"PageDown\", 63302: \"Insert\"\n };\n\n // Number keys\n for (var i = 0; i < 10; i++) { keyNames[i + 48] = keyNames[i + 96] = String(i); }\n // Alphabetic keys\n for (var i$1 = 65; i$1 <= 90; i$1++) { keyNames[i$1] = String.fromCharCode(i$1); }\n // Function keys\n for (var i$2 = 1; i$2 <= 12; i$2++) { keyNames[i$2 + 111] = keyNames[i$2 + 63235] = \"F\" + i$2; }\n\n var keyMap = {};\n\n keyMap.basic = {\n \"Left\": \"goCharLeft\", \"Right\": \"goCharRight\", \"Up\": \"goLineUp\", \"Down\": \"goLineDown\",\n \"End\": \"goLineEnd\", \"Home\": \"goLineStartSmart\", \"PageUp\": \"goPageUp\", \"PageDown\": \"goPageDown\",\n \"Delete\": \"delCharAfter\", \"Backspace\": \"delCharBefore\", \"Shift-Backspace\": \"delCharBefore\",\n \"Tab\": \"defaultTab\", \"Shift-Tab\": \"indentAuto\",\n \"Enter\": \"newlineAndIndent\", \"Insert\": \"toggleOverwrite\",\n \"Esc\": \"singleSelection\"\n };\n // Note that the save and find-related commands aren't defined by\n // default. User code or addons can define them. Unknown commands\n // are simply ignored.\n keyMap.pcDefault = {\n \"Ctrl-A\": \"selectAll\", \"Ctrl-D\": \"deleteLine\", \"Ctrl-Z\": \"undo\", \"Shift-Ctrl-Z\": \"redo\", \"Ctrl-Y\": \"redo\",\n \"Ctrl-Home\": \"goDocStart\", \"Ctrl-End\": \"goDocEnd\", \"Ctrl-Up\": \"goLineUp\", \"Ctrl-Down\": \"goLineDown\",\n \"Ctrl-Left\": \"goGroupLeft\", \"Ctrl-Right\": \"goGroupRight\", \"Alt-Left\": \"goLineStart\", \"Alt-Right\": \"goLineEnd\",\n \"Ctrl-Backspace\": \"delGroupBefore\", \"Ctrl-Delete\": \"delGroupAfter\", \"Ctrl-S\": \"save\", \"Ctrl-F\": \"find\",\n \"Ctrl-G\": \"findNext\", \"Shift-Ctrl-G\": \"findPrev\", \"Shift-Ctrl-F\": \"replace\", \"Shift-Ctrl-R\": \"replaceAll\",\n \"Ctrl-[\": \"indentLess\", \"Ctrl-]\": \"indentMore\",\n \"Ctrl-U\": \"undoSelection\", \"Shift-Ctrl-U\": \"redoSelection\", \"Alt-U\": \"redoSelection\",\n \"fallthrough\": \"basic\"\n };\n // Very basic readline/emacs-style bindings, which are standard on Mac.\n keyMap.emacsy = {\n \"Ctrl-F\": \"goCharRight\", \"Ctrl-B\": \"goCharLeft\", \"Ctrl-P\": \"goLineUp\", \"Ctrl-N\": \"goLineDown\",\n \"Ctrl-A\": \"goLineStart\", \"Ctrl-E\": \"goLineEnd\", \"Ctrl-V\": \"goPageDown\", \"Shift-Ctrl-V\": \"goPageUp\",\n \"Ctrl-D\": \"delCharAfter\", \"Ctrl-H\": \"delCharBefore\", \"Alt-Backspace\": \"delWordBefore\", \"Ctrl-K\": \"killLine\",\n \"Ctrl-T\": \"transposeChars\", \"Ctrl-O\": \"openLine\"\n };\n keyMap.macDefault = {\n \"Cmd-A\": \"selectAll\", \"Cmd-D\": \"deleteLine\", \"Cmd-Z\": \"undo\", \"Shift-Cmd-Z\": \"redo\", \"Cmd-Y\": \"redo\",\n \"Cmd-Home\": \"goDocStart\", \"Cmd-Up\": \"goDocStart\", \"Cmd-End\": \"goDocEnd\", \"Cmd-Down\": \"goDocEnd\", \"Alt-Left\": \"goGroupLeft\",\n \"Alt-Right\": \"goGroupRight\", \"Cmd-Left\": \"goLineLeft\", \"Cmd-Right\": \"goLineRight\", \"Alt-Backspace\": \"delGroupBefore\",\n \"Ctrl-Alt-Backspace\": \"delGroupAfter\", \"Alt-Delete\": \"delGroupAfter\", \"Cmd-S\": \"save\", \"Cmd-F\": \"find\",\n \"Cmd-G\": \"findNext\", \"Shift-Cmd-G\": \"findPrev\", \"Cmd-Alt-F\": \"replace\", \"Shift-Cmd-Alt-F\": \"replaceAll\",\n \"Cmd-[\": \"indentLess\", \"Cmd-]\": \"indentMore\", \"Cmd-Backspace\": \"delWrappedLineLeft\", \"Cmd-Delete\": \"delWrappedLineRight\",\n \"Cmd-U\": \"undoSelection\", \"Shift-Cmd-U\": \"redoSelection\", \"Ctrl-Up\": \"goDocStart\", \"Ctrl-Down\": \"goDocEnd\",\n \"fallthrough\": [\"basic\", \"emacsy\"]\n };\n keyMap[\"default\"] = mac ? keyMap.macDefault : keyMap.pcDefault;\n\n // KEYMAP DISPATCH\n\n function normalizeKeyName(name) {\n var parts = name.split(/-(?!$)/);\n name = parts[parts.length - 1];\n var alt, ctrl, shift, cmd;\n for (var i = 0; i < parts.length - 1; i++) {\n var mod = parts[i];\n if (/^(cmd|meta|m)$/i.test(mod)) { cmd = true; }\n else if (/^a(lt)?$/i.test(mod)) { alt = true; }\n else if (/^(c|ctrl|control)$/i.test(mod)) { ctrl = true; }\n else if (/^s(hift)?$/i.test(mod)) { shift = true; }\n else { throw new Error(\"Unrecognized modifier name: \" + mod) }\n }\n if (alt) { name = \"Alt-\" + name; }\n if (ctrl) { name = \"Ctrl-\" + name; }\n if (cmd) { name = \"Cmd-\" + name; }\n if (shift) { name = \"Shift-\" + name; }\n return name\n }\n\n // This is a kludge to keep keymaps mostly working as raw objects\n // (backwards compatibility) while at the same time support features\n // like normalization and multi-stroke key bindings. It compiles a\n // new normalized keymap, and then updates the old object to reflect\n // this.\n function normalizeKeyMap(keymap) {\n var copy = {};\n for (var keyname in keymap) { if (keymap.hasOwnProperty(keyname)) {\n var value = keymap[keyname];\n if (/^(name|fallthrough|(de|at)tach)$/.test(keyname)) { continue }\n if (value == \"...\") { delete keymap[keyname]; continue }\n\n var keys = map(keyname.split(\" \"), normalizeKeyName);\n for (var i = 0; i < keys.length; i++) {\n var val = (void 0), name = (void 0);\n if (i == keys.length - 1) {\n name = keys.join(\" \");\n val = value;\n } else {\n name = keys.slice(0, i + 1).join(\" \");\n val = \"...\";\n }\n var prev = copy[name];\n if (!prev) { copy[name] = val; }\n else if (prev != val) { throw new Error(\"Inconsistent bindings for \" + name) }\n }\n delete keymap[keyname];\n } }\n for (var prop in copy) { keymap[prop] = copy[prop]; }\n return keymap\n }\n\n function lookupKey(key, map, handle, context) {\n map = getKeyMap(map);\n var found = map.call ? map.call(key, context) : map[key];\n if (found === false) { return \"nothing\" }\n if (found === \"...\") { return \"multi\" }\n if (found != null && handle(found)) { return \"handled\" }\n\n if (map.fallthrough) {\n if (Object.prototype.toString.call(map.fallthrough) != \"[object Array]\")\n { return lookupKey(key, map.fallthrough, handle, context) }\n for (var i = 0; i < map.fallthrough.length; i++) {\n var result = lookupKey(key, map.fallthrough[i], handle, context);\n if (result) { return result }\n }\n }\n }\n\n // Modifier key presses don't count as 'real' key presses for the\n // purpose of keymap fallthrough.\n function isModifierKey(value) {\n var name = typeof value == \"string\" ? value : keyNames[value.keyCode];\n return name == \"Ctrl\" || name == \"Alt\" || name == \"Shift\" || name == \"Mod\"\n }\n\n function addModifierNames(name, event, noShift) {\n var base = name;\n if (event.altKey && base != \"Alt\") { name = \"Alt-\" + name; }\n if ((flipCtrlCmd ? event.metaKey : event.ctrlKey) && base != \"Ctrl\") { name = \"Ctrl-\" + name; }\n if ((flipCtrlCmd ? event.ctrlKey : event.metaKey) && base != \"Mod\") { name = \"Cmd-\" + name; }\n if (!noShift && event.shiftKey && base != \"Shift\") { name = \"Shift-\" + name; }\n return name\n }\n\n // Look up the name of a key as indicated by an event object.\n function keyName(event, noShift) {\n if (presto && event.keyCode == 34 && event[\"char\"]) { return false }\n var name = keyNames[event.keyCode];\n if (name == null || event.altGraphKey) { return false }\n // Ctrl-ScrollLock has keyCode 3, same as Ctrl-Pause,\n // so we'll use event.code when available (Chrome 48+, FF 38+, Safari 10.1+)\n if (event.keyCode == 3 && event.code) { name = event.code; }\n return addModifierNames(name, event, noShift)\n }\n\n function getKeyMap(val) {\n return typeof val == \"string\" ? keyMap[val] : val\n }\n\n // Helper for deleting text near the selection(s), used to implement\n // backspace, delete, and similar functionality.\n function deleteNearSelection(cm, compute) {\n var ranges = cm.doc.sel.ranges, kill = [];\n // Build up a set of ranges to kill first, merging overlapping\n // ranges.\n for (var i = 0; i < ranges.length; i++) {\n var toKill = compute(ranges[i]);\n while (kill.length && cmp(toKill.from, lst(kill).to) <= 0) {\n var replaced = kill.pop();\n if (cmp(replaced.from, toKill.from) < 0) {\n toKill.from = replaced.from;\n break\n }\n }\n kill.push(toKill);\n }\n // Next, remove those actual ranges.\n runInOp(cm, function () {\n for (var i = kill.length - 1; i >= 0; i--)\n { replaceRange(cm.doc, \"\", kill[i].from, kill[i].to, \"+delete\"); }\n ensureCursorVisible(cm);\n });\n }\n\n function moveCharLogically(line, ch, dir) {\n var target = skipExtendingChars(line.text, ch + dir, dir);\n return target < 0 || target > line.text.length ? null : target\n }\n\n function moveLogically(line, start, dir) {\n var ch = moveCharLogically(line, start.ch, dir);\n return ch == null ? null : new Pos(start.line, ch, dir < 0 ? \"after\" : \"before\")\n }\n\n function endOfLine(visually, cm, lineObj, lineNo, dir) {\n if (visually) {\n if (cm.doc.direction == \"rtl\") { dir = -dir; }\n var order = getOrder(lineObj, cm.doc.direction);\n if (order) {\n var part = dir < 0 ? lst(order) : order[0];\n var moveInStorageOrder = (dir < 0) == (part.level == 1);\n var sticky = moveInStorageOrder ? \"after\" : \"before\";\n var ch;\n // With a wrapped rtl chunk (possibly spanning multiple bidi parts),\n // it could be that the last bidi part is not on the last visual line,\n // since visual lines contain content order-consecutive chunks.\n // Thus, in rtl, we are looking for the first (content-order) character\n // in the rtl chunk that is on the last line (that is, the same line\n // as the last (content-order) character).\n if (part.level > 0 || cm.doc.direction == \"rtl\") {\n var prep = prepareMeasureForLine(cm, lineObj);\n ch = dir < 0 ? lineObj.text.length - 1 : 0;\n var targetTop = measureCharPrepared(cm, prep, ch).top;\n ch = findFirst(function (ch) { return measureCharPrepared(cm, prep, ch).top == targetTop; }, (dir < 0) == (part.level == 1) ? part.from : part.to - 1, ch);\n if (sticky == \"before\") { ch = moveCharLogically(lineObj, ch, 1); }\n } else { ch = dir < 0 ? part.to : part.from; }\n return new Pos(lineNo, ch, sticky)\n }\n }\n return new Pos(lineNo, dir < 0 ? lineObj.text.length : 0, dir < 0 ? \"before\" : \"after\")\n }\n\n function moveVisually(cm, line, start, dir) {\n var bidi = getOrder(line, cm.doc.direction);\n if (!bidi) { return moveLogically(line, start, dir) }\n if (start.ch >= line.text.length) {\n start.ch = line.text.length;\n start.sticky = \"before\";\n } else if (start.ch <= 0) {\n start.ch = 0;\n start.sticky = \"after\";\n }\n var partPos = getBidiPartAt(bidi, start.ch, start.sticky), part = bidi[partPos];\n if (cm.doc.direction == \"ltr\" && part.level % 2 == 0 && (dir > 0 ? part.to > start.ch : part.from < start.ch)) {\n // Case 1: We move within an ltr part in an ltr editor. Even with wrapped lines,\n // nothing interesting happens.\n return moveLogically(line, start, dir)\n }\n\n var mv = function (pos, dir) { return moveCharLogically(line, pos instanceof Pos ? pos.ch : pos, dir); };\n var prep;\n var getWrappedLineExtent = function (ch) {\n if (!cm.options.lineWrapping) { return {begin: 0, end: line.text.length} }\n prep = prep || prepareMeasureForLine(cm, line);\n return wrappedLineExtentChar(cm, line, prep, ch)\n };\n var wrappedLineExtent = getWrappedLineExtent(start.sticky == \"before\" ? mv(start, -1) : start.ch);\n\n if (cm.doc.direction == \"rtl\" || part.level == 1) {\n var moveInStorageOrder = (part.level == 1) == (dir < 0);\n var ch = mv(start, moveInStorageOrder ? 1 : -1);\n if (ch != null && (!moveInStorageOrder ? ch >= part.from && ch >= wrappedLineExtent.begin : ch <= part.to && ch <= wrappedLineExtent.end)) {\n // Case 2: We move within an rtl part or in an rtl editor on the same visual line\n var sticky = moveInStorageOrder ? \"before\" : \"after\";\n return new Pos(start.line, ch, sticky)\n }\n }\n\n // Case 3: Could not move within this bidi part in this visual line, so leave\n // the current bidi part\n\n var searchInVisualLine = function (partPos, dir, wrappedLineExtent) {\n var getRes = function (ch, moveInStorageOrder) { return moveInStorageOrder\n ? new Pos(start.line, mv(ch, 1), \"before\")\n : new Pos(start.line, ch, \"after\"); };\n\n for (; partPos >= 0 && partPos < bidi.length; partPos += dir) {\n var part = bidi[partPos];\n var moveInStorageOrder = (dir > 0) == (part.level != 1);\n var ch = moveInStorageOrder ? wrappedLineExtent.begin : mv(wrappedLineExtent.end, -1);\n if (part.from <= ch && ch < part.to) { return getRes(ch, moveInStorageOrder) }\n ch = moveInStorageOrder ? part.from : mv(part.to, -1);\n if (wrappedLineExtent.begin <= ch && ch < wrappedLineExtent.end) { return getRes(ch, moveInStorageOrder) }\n }\n };\n\n // Case 3a: Look for other bidi parts on the same visual line\n var res = searchInVisualLine(partPos + dir, dir, wrappedLineExtent);\n if (res) { return res }\n\n // Case 3b: Look for other bidi parts on the next visual line\n var nextCh = dir > 0 ? wrappedLineExtent.end : mv(wrappedLineExtent.begin, -1);\n if (nextCh != null && !(dir > 0 && nextCh == line.text.length)) {\n res = searchInVisualLine(dir > 0 ? 0 : bidi.length - 1, dir, getWrappedLineExtent(nextCh));\n if (res) { return res }\n }\n\n // Case 4: Nowhere to move\n return null\n }\n\n // Commands are parameter-less actions that can be performed on an\n // editor, mostly used for keybindings.\n var commands = {\n selectAll: selectAll,\n singleSelection: function (cm) { return cm.setSelection(cm.getCursor(\"anchor\"), cm.getCursor(\"head\"), sel_dontScroll); },\n killLine: function (cm) { return deleteNearSelection(cm, function (range) {\n if (range.empty()) {\n var len = getLine(cm.doc, range.head.line).text.length;\n if (range.head.ch == len && range.head.line < cm.lastLine())\n { return {from: range.head, to: Pos(range.head.line + 1, 0)} }\n else\n { return {from: range.head, to: Pos(range.head.line, len)} }\n } else {\n return {from: range.from(), to: range.to()}\n }\n }); },\n deleteLine: function (cm) { return deleteNearSelection(cm, function (range) { return ({\n from: Pos(range.from().line, 0),\n to: clipPos(cm.doc, Pos(range.to().line + 1, 0))\n }); }); },\n delLineLeft: function (cm) { return deleteNearSelection(cm, function (range) { return ({\n from: Pos(range.from().line, 0), to: range.from()\n }); }); },\n delWrappedLineLeft: function (cm) { return deleteNearSelection(cm, function (range) {\n var top = cm.charCoords(range.head, \"div\").top + 5;\n var leftPos = cm.coordsChar({left: 0, top: top}, \"div\");\n return {from: leftPos, to: range.from()}\n }); },\n delWrappedLineRight: function (cm) { return deleteNearSelection(cm, function (range) {\n var top = cm.charCoords(range.head, \"div\").top + 5;\n var rightPos = cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, \"div\");\n return {from: range.from(), to: rightPos }\n }); },\n undo: function (cm) { return cm.undo(); },\n redo: function (cm) { return cm.redo(); },\n undoSelection: function (cm) { return cm.undoSelection(); },\n redoSelection: function (cm) { return cm.redoSelection(); },\n goDocStart: function (cm) { return cm.extendSelection(Pos(cm.firstLine(), 0)); },\n goDocEnd: function (cm) { return cm.extendSelection(Pos(cm.lastLine())); },\n goLineStart: function (cm) { return cm.extendSelectionsBy(function (range) { return lineStart(cm, range.head.line); },\n {origin: \"+move\", bias: 1}\n ); },\n goLineStartSmart: function (cm) { return cm.extendSelectionsBy(function (range) { return lineStartSmart(cm, range.head); },\n {origin: \"+move\", bias: 1}\n ); },\n goLineEnd: function (cm) { return cm.extendSelectionsBy(function (range) { return lineEnd(cm, range.head.line); },\n {origin: \"+move\", bias: -1}\n ); },\n goLineRight: function (cm) { return cm.extendSelectionsBy(function (range) {\n var top = cm.cursorCoords(range.head, \"div\").top + 5;\n return cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, \"div\")\n }, sel_move); },\n goLineLeft: function (cm) { return cm.extendSelectionsBy(function (range) {\n var top = cm.cursorCoords(range.head, \"div\").top + 5;\n return cm.coordsChar({left: 0, top: top}, \"div\")\n }, sel_move); },\n goLineLeftSmart: function (cm) { return cm.extendSelectionsBy(function (range) {\n var top = cm.cursorCoords(range.head, \"div\").top + 5;\n var pos = cm.coordsChar({left: 0, top: top}, \"div\");\n if (pos.ch < cm.getLine(pos.line).search(/\\S/)) { return lineStartSmart(cm, range.head) }\n return pos\n }, sel_move); },\n goLineUp: function (cm) { return cm.moveV(-1, \"line\"); },\n goLineDown: function (cm) { return cm.moveV(1, \"line\"); },\n goPageUp: function (cm) { return cm.moveV(-1, \"page\"); },\n goPageDown: function (cm) { return cm.moveV(1, \"page\"); },\n goCharLeft: function (cm) { return cm.moveH(-1, \"char\"); },\n goCharRight: function (cm) { return cm.moveH(1, \"char\"); },\n goColumnLeft: function (cm) { return cm.moveH(-1, \"column\"); },\n goColumnRight: function (cm) { return cm.moveH(1, \"column\"); },\n goWordLeft: function (cm) { return cm.moveH(-1, \"word\"); },\n goGroupRight: function (cm) { return cm.moveH(1, \"group\"); },\n goGroupLeft: function (cm) { return cm.moveH(-1, \"group\"); },\n goWordRight: function (cm) { return cm.moveH(1, \"word\"); },\n delCharBefore: function (cm) { return cm.deleteH(-1, \"codepoint\"); },\n delCharAfter: function (cm) { return cm.deleteH(1, \"char\"); },\n delWordBefore: function (cm) { return cm.deleteH(-1, \"word\"); },\n delWordAfter: function (cm) { return cm.deleteH(1, \"word\"); },\n delGroupBefore: function (cm) { return cm.deleteH(-1, \"group\"); },\n delGroupAfter: function (cm) { return cm.deleteH(1, \"group\"); },\n indentAuto: function (cm) { return cm.indentSelection(\"smart\"); },\n indentMore: function (cm) { return cm.indentSelection(\"add\"); },\n indentLess: function (cm) { return cm.indentSelection(\"subtract\"); },\n insertTab: function (cm) { return cm.replaceSelection(\"\\t\"); },\n insertSoftTab: function (cm) {\n var spaces = [], ranges = cm.listSelections(), tabSize = cm.options.tabSize;\n for (var i = 0; i < ranges.length; i++) {\n var pos = ranges[i].from();\n var col = countColumn(cm.getLine(pos.line), pos.ch, tabSize);\n spaces.push(spaceStr(tabSize - col % tabSize));\n }\n cm.replaceSelections(spaces);\n },\n defaultTab: function (cm) {\n if (cm.somethingSelected()) { cm.indentSelection(\"add\"); }\n else { cm.execCommand(\"insertTab\"); }\n },\n // Swap the two chars left and right of each selection's head.\n // Move cursor behind the two swapped characters afterwards.\n //\n // Doesn't consider line feeds a character.\n // Doesn't scan more than one line above to find a character.\n // Doesn't do anything on an empty line.\n // Doesn't do anything with non-empty selections.\n transposeChars: function (cm) { return runInOp(cm, function () {\n var ranges = cm.listSelections(), newSel = [];\n for (var i = 0; i < ranges.length; i++) {\n if (!ranges[i].empty()) { continue }\n var cur = ranges[i].head, line = getLine(cm.doc, cur.line).text;\n if (line) {\n if (cur.ch == line.length) { cur = new Pos(cur.line, cur.ch - 1); }\n if (cur.ch > 0) {\n cur = new Pos(cur.line, cur.ch + 1);\n cm.replaceRange(line.charAt(cur.ch - 1) + line.charAt(cur.ch - 2),\n Pos(cur.line, cur.ch - 2), cur, \"+transpose\");\n } else if (cur.line > cm.doc.first) {\n var prev = getLine(cm.doc, cur.line - 1).text;\n if (prev) {\n cur = new Pos(cur.line, 1);\n cm.replaceRange(line.charAt(0) + cm.doc.lineSeparator() +\n prev.charAt(prev.length - 1),\n Pos(cur.line - 1, prev.length - 1), cur, \"+transpose\");\n }\n }\n }\n newSel.push(new Range(cur, cur));\n }\n cm.setSelections(newSel);\n }); },\n newlineAndIndent: function (cm) { return runInOp(cm, function () {\n var sels = cm.listSelections();\n for (var i = sels.length - 1; i >= 0; i--)\n { cm.replaceRange(cm.doc.lineSeparator(), sels[i].anchor, sels[i].head, \"+input\"); }\n sels = cm.listSelections();\n for (var i$1 = 0; i$1 < sels.length; i$1++)\n { cm.indentLine(sels[i$1].from().line, null, true); }\n ensureCursorVisible(cm);\n }); },\n openLine: function (cm) { return cm.replaceSelection(\"\\n\", \"start\"); },\n toggleOverwrite: function (cm) { return cm.toggleOverwrite(); }\n };\n\n\n function lineStart(cm, lineN) {\n var line = getLine(cm.doc, lineN);\n var visual = visualLine(line);\n if (visual != line) { lineN = lineNo(visual); }\n return endOfLine(true, cm, visual, lineN, 1)\n }\n function lineEnd(cm, lineN) {\n var line = getLine(cm.doc, lineN);\n var visual = visualLineEnd(line);\n if (visual != line) { lineN = lineNo(visual); }\n return endOfLine(true, cm, line, lineN, -1)\n }\n function lineStartSmart(cm, pos) {\n var start = lineStart(cm, pos.line);\n var line = getLine(cm.doc, start.line);\n var order = getOrder(line, cm.doc.direction);\n if (!order || order[0].level == 0) {\n var firstNonWS = Math.max(start.ch, line.text.search(/\\S/));\n var inWS = pos.line == start.line && pos.ch <= firstNonWS && pos.ch;\n return Pos(start.line, inWS ? 0 : firstNonWS, start.sticky)\n }\n return start\n }\n\n // Run a handler that was bound to a key.\n function doHandleBinding(cm, bound, dropShift) {\n if (typeof bound == \"string\") {\n bound = commands[bound];\n if (!bound) { return false }\n }\n // Ensure previous input has been read, so that the handler sees a\n // consistent view of the document\n cm.display.input.ensurePolled();\n var prevShift = cm.display.shift, done = false;\n try {\n if (cm.isReadOnly()) { cm.state.suppressEdits = true; }\n if (dropShift) { cm.display.shift = false; }\n done = bound(cm) != Pass;\n } finally {\n cm.display.shift = prevShift;\n cm.state.suppressEdits = false;\n }\n return done\n }\n\n function lookupKeyForEditor(cm, name, handle) {\n for (var i = 0; i < cm.state.keyMaps.length; i++) {\n var result = lookupKey(name, cm.state.keyMaps[i], handle, cm);\n if (result) { return result }\n }\n return (cm.options.extraKeys && lookupKey(name, cm.options.extraKeys, handle, cm))\n || lookupKey(name, cm.options.keyMap, handle, cm)\n }\n\n // Note that, despite the name, this function is also used to check\n // for bound mouse clicks.\n\n var stopSeq = new Delayed;\n\n function dispatchKey(cm, name, e, handle) {\n var seq = cm.state.keySeq;\n if (seq) {\n if (isModifierKey(name)) { return \"handled\" }\n if (/\\'$/.test(name))\n { cm.state.keySeq = null; }\n else\n { stopSeq.set(50, function () {\n if (cm.state.keySeq == seq) {\n cm.state.keySeq = null;\n cm.display.input.reset();\n }\n }); }\n if (dispatchKeyInner(cm, seq + \" \" + name, e, handle)) { return true }\n }\n return dispatchKeyInner(cm, name, e, handle)\n }\n\n function dispatchKeyInner(cm, name, e, handle) {\n var result = lookupKeyForEditor(cm, name, handle);\n\n if (result == \"multi\")\n { cm.state.keySeq = name; }\n if (result == \"handled\")\n { signalLater(cm, \"keyHandled\", cm, name, e); }\n\n if (result == \"handled\" || result == \"multi\") {\n e_preventDefault(e);\n restartBlink(cm);\n }\n\n return !!result\n }\n\n // Handle a key from the keydown event.\n function handleKeyBinding(cm, e) {\n var name = keyName(e, true);\n if (!name) { return false }\n\n if (e.shiftKey && !cm.state.keySeq) {\n // First try to resolve full name (including 'Shift-'). Failing\n // that, see if there is a cursor-motion command (starting with\n // 'go') bound to the keyname without 'Shift-'.\n return dispatchKey(cm, \"Shift-\" + name, e, function (b) { return doHandleBinding(cm, b, true); })\n || dispatchKey(cm, name, e, function (b) {\n if (typeof b == \"string\" ? /^go[A-Z]/.test(b) : b.motion)\n { return doHandleBinding(cm, b) }\n })\n } else {\n return dispatchKey(cm, name, e, function (b) { return doHandleBinding(cm, b); })\n }\n }\n\n // Handle a key from the keypress event\n function handleCharBinding(cm, e, ch) {\n return dispatchKey(cm, \"'\" + ch + \"'\", e, function (b) { return doHandleBinding(cm, b, true); })\n }\n\n var lastStoppedKey = null;\n function onKeyDown(e) {\n var cm = this;\n if (e.target && e.target != cm.display.input.getField()) { return }\n cm.curOp.focus = activeElt(root(cm));\n if (signalDOMEvent(cm, e)) { return }\n // IE does strange things with escape.\n if (ie && ie_version < 11 && e.keyCode == 27) { e.returnValue = false; }\n var code = e.keyCode;\n cm.display.shift = code == 16 || e.shiftKey;\n var handled = handleKeyBinding(cm, e);\n if (presto) {\n lastStoppedKey = handled ? code : null;\n // Opera has no cut event... we try to at least catch the key combo\n if (!handled && code == 88 && !hasCopyEvent && (mac ? e.metaKey : e.ctrlKey))\n { cm.replaceSelection(\"\", null, \"cut\"); }\n }\n if (gecko && !mac && !handled && code == 46 && e.shiftKey && !e.ctrlKey && document.execCommand)\n { document.execCommand(\"cut\"); }\n\n // Turn mouse into crosshair when Alt is held on Mac.\n if (code == 18 && !/\\bCodeMirror-crosshair\\b/.test(cm.display.lineDiv.className))\n { showCrossHair(cm); }\n }\n\n function showCrossHair(cm) {\n var lineDiv = cm.display.lineDiv;\n addClass(lineDiv, \"CodeMirror-crosshair\");\n\n function up(e) {\n if (e.keyCode == 18 || !e.altKey) {\n rmClass(lineDiv, \"CodeMirror-crosshair\");\n off(document, \"keyup\", up);\n off(document, \"mouseover\", up);\n }\n }\n on(document, \"keyup\", up);\n on(document, \"mouseover\", up);\n }\n\n function onKeyUp(e) {\n if (e.keyCode == 16) { this.doc.sel.shift = false; }\n signalDOMEvent(this, e);\n }\n\n function onKeyPress(e) {\n var cm = this;\n if (e.target && e.target != cm.display.input.getField()) { return }\n if (eventInWidget(cm.display, e) || signalDOMEvent(cm, e) || e.ctrlKey && !e.altKey || mac && e.metaKey) { return }\n var keyCode = e.keyCode, charCode = e.charCode;\n if (presto && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return}\n if ((presto && (!e.which || e.which < 10)) && handleKeyBinding(cm, e)) { return }\n var ch = String.fromCharCode(charCode == null ? keyCode : charCode);\n // Some browsers fire keypress events for backspace\n if (ch == \"\\x08\") { return }\n if (handleCharBinding(cm, e, ch)) { return }\n cm.display.input.onKeyPress(e);\n }\n\n var DOUBLECLICK_DELAY = 400;\n\n var PastClick = function(time, pos, button) {\n this.time = time;\n this.pos = pos;\n this.button = button;\n };\n\n PastClick.prototype.compare = function (time, pos, button) {\n return this.time + DOUBLECLICK_DELAY > time &&\n cmp(pos, this.pos) == 0 && button == this.button\n };\n\n var lastClick, lastDoubleClick;\n function clickRepeat(pos, button) {\n var now = +new Date;\n if (lastDoubleClick && lastDoubleClick.compare(now, pos, button)) {\n lastClick = lastDoubleClick = null;\n return \"triple\"\n } else if (lastClick && lastClick.compare(now, pos, button)) {\n lastDoubleClick = new PastClick(now, pos, button);\n lastClick = null;\n return \"double\"\n } else {\n lastClick = new PastClick(now, pos, button);\n lastDoubleClick = null;\n return \"single\"\n }\n }\n\n // A mouse down can be a single click, double click, triple click,\n // start of selection drag, start of text drag, new cursor\n // (ctrl-click), rectangle drag (alt-drag), or xwin\n // middle-click-paste. Or it might be a click on something we should\n // not interfere with, such as a scrollbar or widget.\n function onMouseDown(e) {\n var cm = this, display = cm.display;\n if (signalDOMEvent(cm, e) || display.activeTouch && display.input.supportsTouch()) { return }\n display.input.ensurePolled();\n display.shift = e.shiftKey;\n\n if (eventInWidget(display, e)) {\n if (!webkit) {\n // Briefly turn off draggability, to allow widgets to do\n // normal dragging things.\n display.scroller.draggable = false;\n setTimeout(function () { return display.scroller.draggable = true; }, 100);\n }\n return\n }\n if (clickInGutter(cm, e)) { return }\n var pos = posFromMouse(cm, e), button = e_button(e), repeat = pos ? clickRepeat(pos, button) : \"single\";\n win(cm).focus();\n\n // #3261: make sure, that we're not starting a second selection\n if (button == 1 && cm.state.selectingText)\n { cm.state.selectingText(e); }\n\n if (pos && handleMappedButton(cm, button, pos, repeat, e)) { return }\n\n if (button == 1) {\n if (pos) { leftButtonDown(cm, pos, repeat, e); }\n else if (e_target(e) == display.scroller) { e_preventDefault(e); }\n } else if (button == 2) {\n if (pos) { extendSelection(cm.doc, pos); }\n setTimeout(function () { return display.input.focus(); }, 20);\n } else if (button == 3) {\n if (captureRightClick) { cm.display.input.onContextMenu(e); }\n else { delayBlurEvent(cm); }\n }\n }\n\n function handleMappedButton(cm, button, pos, repeat, event) {\n var name = \"Click\";\n if (repeat == \"double\") { name = \"Double\" + name; }\n else if (repeat == \"triple\") { name = \"Triple\" + name; }\n name = (button == 1 ? \"Left\" : button == 2 ? \"Middle\" : \"Right\") + name;\n\n return dispatchKey(cm, addModifierNames(name, event), event, function (bound) {\n if (typeof bound == \"string\") { bound = commands[bound]; }\n if (!bound) { return false }\n var done = false;\n try {\n if (cm.isReadOnly()) { cm.state.suppressEdits = true; }\n done = bound(cm, pos) != Pass;\n } finally {\n cm.state.suppressEdits = false;\n }\n return done\n })\n }\n\n function configureMouse(cm, repeat, event) {\n var option = cm.getOption(\"configureMouse\");\n var value = option ? option(cm, repeat, event) : {};\n if (value.unit == null) {\n var rect = chromeOS ? event.shiftKey && event.metaKey : event.altKey;\n value.unit = rect ? \"rectangle\" : repeat == \"single\" ? \"char\" : repeat == \"double\" ? \"word\" : \"line\";\n }\n if (value.extend == null || cm.doc.extend) { value.extend = cm.doc.extend || event.shiftKey; }\n if (value.addNew == null) { value.addNew = mac ? event.metaKey : event.ctrlKey; }\n if (value.moveOnDrag == null) { value.moveOnDrag = !(mac ? event.altKey : event.ctrlKey); }\n return value\n }\n\n function leftButtonDown(cm, pos, repeat, event) {\n if (ie) { setTimeout(bind(ensureFocus, cm), 0); }\n else { cm.curOp.focus = activeElt(root(cm)); }\n\n var behavior = configureMouse(cm, repeat, event);\n\n var sel = cm.doc.sel, contained;\n if (cm.options.dragDrop && dragAndDrop && !cm.isReadOnly() &&\n repeat == \"single\" && (contained = sel.contains(pos)) > -1 &&\n (cmp((contained = sel.ranges[contained]).from(), pos) < 0 || pos.xRel > 0) &&\n (cmp(contained.to(), pos) > 0 || pos.xRel < 0))\n { leftButtonStartDrag(cm, event, pos, behavior); }\n else\n { leftButtonSelect(cm, event, pos, behavior); }\n }\n\n // Start a text drag. When it ends, see if any dragging actually\n // happen, and treat as a click if it didn't.\n function leftButtonStartDrag(cm, event, pos, behavior) {\n var display = cm.display, moved = false;\n var dragEnd = operation(cm, function (e) {\n if (webkit) { display.scroller.draggable = false; }\n cm.state.draggingText = false;\n if (cm.state.delayingBlurEvent) {\n if (cm.hasFocus()) { cm.state.delayingBlurEvent = false; }\n else { delayBlurEvent(cm); }\n }\n off(display.wrapper.ownerDocument, \"mouseup\", dragEnd);\n off(display.wrapper.ownerDocument, \"mousemove\", mouseMove);\n off(display.scroller, \"dragstart\", dragStart);\n off(display.scroller, \"drop\", dragEnd);\n if (!moved) {\n e_preventDefault(e);\n if (!behavior.addNew)\n { extendSelection(cm.doc, pos, null, null, behavior.extend); }\n // Work around unexplainable focus problem in IE9 (#2127) and Chrome (#3081)\n if ((webkit && !safari) || ie && ie_version == 9)\n { setTimeout(function () {display.wrapper.ownerDocument.body.focus({preventScroll: true}); display.input.focus();}, 20); }\n else\n { display.input.focus(); }\n }\n });\n var mouseMove = function(e2) {\n moved = moved || Math.abs(event.clientX - e2.clientX) + Math.abs(event.clientY - e2.clientY) >= 10;\n };\n var dragStart = function () { return moved = true; };\n // Let the drag handler handle this.\n if (webkit) { display.scroller.draggable = true; }\n cm.state.draggingText = dragEnd;\n dragEnd.copy = !behavior.moveOnDrag;\n on(display.wrapper.ownerDocument, \"mouseup\", dragEnd);\n on(display.wrapper.ownerDocument, \"mousemove\", mouseMove);\n on(display.scroller, \"dragstart\", dragStart);\n on(display.scroller, \"drop\", dragEnd);\n\n cm.state.delayingBlurEvent = true;\n setTimeout(function () { return display.input.focus(); }, 20);\n // IE's approach to draggable\n if (display.scroller.dragDrop) { display.scroller.dragDrop(); }\n }\n\n function rangeForUnit(cm, pos, unit) {\n if (unit == \"char\") { return new Range(pos, pos) }\n if (unit == \"word\") { return cm.findWordAt(pos) }\n if (unit == \"line\") { return new Range(Pos(pos.line, 0), clipPos(cm.doc, Pos(pos.line + 1, 0))) }\n var result = unit(cm, pos);\n return new Range(result.from, result.to)\n }\n\n // Normal selection, as opposed to text dragging.\n function leftButtonSelect(cm, event, start, behavior) {\n if (ie) { delayBlurEvent(cm); }\n var display = cm.display, doc = cm.doc;\n e_preventDefault(event);\n\n var ourRange, ourIndex, startSel = doc.sel, ranges = startSel.ranges;\n if (behavior.addNew && !behavior.extend) {\n ourIndex = doc.sel.contains(start);\n if (ourIndex > -1)\n { ourRange = ranges[ourIndex]; }\n else\n { ourRange = new Range(start, start); }\n } else {\n ourRange = doc.sel.primary();\n ourIndex = doc.sel.primIndex;\n }\n\n if (behavior.unit == \"rectangle\") {\n if (!behavior.addNew) { ourRange = new Range(start, start); }\n start = posFromMouse(cm, event, true, true);\n ourIndex = -1;\n } else {\n var range = rangeForUnit(cm, start, behavior.unit);\n if (behavior.extend)\n { ourRange = extendRange(ourRange, range.anchor, range.head, behavior.extend); }\n else\n { ourRange = range; }\n }\n\n if (!behavior.addNew) {\n ourIndex = 0;\n setSelection(doc, new Selection([ourRange], 0), sel_mouse);\n startSel = doc.sel;\n } else if (ourIndex == -1) {\n ourIndex = ranges.length;\n setSelection(doc, normalizeSelection(cm, ranges.concat([ourRange]), ourIndex),\n {scroll: false, origin: \"*mouse\"});\n } else if (ranges.length > 1 && ranges[ourIndex].empty() && behavior.unit == \"char\" && !behavior.extend) {\n setSelection(doc, normalizeSelection(cm, ranges.slice(0, ourIndex).concat(ranges.slice(ourIndex + 1)), 0),\n {scroll: false, origin: \"*mouse\"});\n startSel = doc.sel;\n } else {\n replaceOneSelection(doc, ourIndex, ourRange, sel_mouse);\n }\n\n var lastPos = start;\n function extendTo(pos) {\n if (cmp(lastPos, pos) == 0) { return }\n lastPos = pos;\n\n if (behavior.unit == \"rectangle\") {\n var ranges = [], tabSize = cm.options.tabSize;\n var startCol = countColumn(getLine(doc, start.line).text, start.ch, tabSize);\n var posCol = countColumn(getLine(doc, pos.line).text, pos.ch, tabSize);\n var left = Math.min(startCol, posCol), right = Math.max(startCol, posCol);\n for (var line = Math.min(start.line, pos.line), end = Math.min(cm.lastLine(), Math.max(start.line, pos.line));\n line <= end; line++) {\n var text = getLine(doc, line).text, leftPos = findColumn(text, left, tabSize);\n if (left == right)\n { ranges.push(new Range(Pos(line, leftPos), Pos(line, leftPos))); }\n else if (text.length > leftPos)\n { ranges.push(new Range(Pos(line, leftPos), Pos(line, findColumn(text, right, tabSize)))); }\n }\n if (!ranges.length) { ranges.push(new Range(start, start)); }\n setSelection(doc, normalizeSelection(cm, startSel.ranges.slice(0, ourIndex).concat(ranges), ourIndex),\n {origin: \"*mouse\", scroll: false});\n cm.scrollIntoView(pos);\n } else {\n var oldRange = ourRange;\n var range = rangeForUnit(cm, pos, behavior.unit);\n var anchor = oldRange.anchor, head;\n if (cmp(range.anchor, anchor) > 0) {\n head = range.head;\n anchor = minPos(oldRange.from(), range.anchor);\n } else {\n head = range.anchor;\n anchor = maxPos(oldRange.to(), range.head);\n }\n var ranges$1 = startSel.ranges.slice(0);\n ranges$1[ourIndex] = bidiSimplify(cm, new Range(clipPos(doc, anchor), head));\n setSelection(doc, normalizeSelection(cm, ranges$1, ourIndex), sel_mouse);\n }\n }\n\n var editorSize = display.wrapper.getBoundingClientRect();\n // Used to ensure timeout re-tries don't fire when another extend\n // happened in the meantime (clearTimeout isn't reliable -- at\n // least on Chrome, the timeouts still happen even when cleared,\n // if the clear happens after their scheduled firing time).\n var counter = 0;\n\n function extend(e) {\n var curCount = ++counter;\n var cur = posFromMouse(cm, e, true, behavior.unit == \"rectangle\");\n if (!cur) { return }\n if (cmp(cur, lastPos) != 0) {\n cm.curOp.focus = activeElt(root(cm));\n extendTo(cur);\n var visible = visibleLines(display, doc);\n if (cur.line >= visible.to || cur.line < visible.from)\n { setTimeout(operation(cm, function () {if (counter == curCount) { extend(e); }}), 150); }\n } else {\n var outside = e.clientY < editorSize.top ? -20 : e.clientY > editorSize.bottom ? 20 : 0;\n if (outside) { setTimeout(operation(cm, function () {\n if (counter != curCount) { return }\n display.scroller.scrollTop += outside;\n extend(e);\n }), 50); }\n }\n }\n\n function done(e) {\n cm.state.selectingText = false;\n counter = Infinity;\n // If e is null or undefined we interpret this as someone trying\n // to explicitly cancel the selection rather than the user\n // letting go of the mouse button.\n if (e) {\n e_preventDefault(e);\n display.input.focus();\n }\n off(display.wrapper.ownerDocument, \"mousemove\", move);\n off(display.wrapper.ownerDocument, \"mouseup\", up);\n doc.history.lastSelOrigin = null;\n }\n\n var move = operation(cm, function (e) {\n if (e.buttons === 0 || !e_button(e)) { done(e); }\n else { extend(e); }\n });\n var up = operation(cm, done);\n cm.state.selectingText = up;\n on(display.wrapper.ownerDocument, \"mousemove\", move);\n on(display.wrapper.ownerDocument, \"mouseup\", up);\n }\n\n // Used when mouse-selecting to adjust the anchor to the proper side\n // of a bidi jump depending on the visual position of the head.\n function bidiSimplify(cm, range) {\n var anchor = range.anchor;\n var head = range.head;\n var anchorLine = getLine(cm.doc, anchor.line);\n if (cmp(anchor, head) == 0 && anchor.sticky == head.sticky) { return range }\n var order = getOrder(anchorLine);\n if (!order) { return range }\n var index = getBidiPartAt(order, anchor.ch, anchor.sticky), part = order[index];\n if (part.from != anchor.ch && part.to != anchor.ch) { return range }\n var boundary = index + ((part.from == anchor.ch) == (part.level != 1) ? 0 : 1);\n if (boundary == 0 || boundary == order.length) { return range }\n\n // Compute the relative visual position of the head compared to the\n // anchor (<0 is to the left, >0 to the right)\n var leftSide;\n if (head.line != anchor.line) {\n leftSide = (head.line - anchor.line) * (cm.doc.direction == \"ltr\" ? 1 : -1) > 0;\n } else {\n var headIndex = getBidiPartAt(order, head.ch, head.sticky);\n var dir = headIndex - index || (head.ch - anchor.ch) * (part.level == 1 ? -1 : 1);\n if (headIndex == boundary - 1 || headIndex == boundary)\n { leftSide = dir < 0; }\n else\n { leftSide = dir > 0; }\n }\n\n var usePart = order[boundary + (leftSide ? -1 : 0)];\n var from = leftSide == (usePart.level == 1);\n var ch = from ? usePart.from : usePart.to, sticky = from ? \"after\" : \"before\";\n return anchor.ch == ch && anchor.sticky == sticky ? range : new Range(new Pos(anchor.line, ch, sticky), head)\n }\n\n\n // Determines whether an event happened in the gutter, and fires the\n // handlers for the corresponding event.\n function gutterEvent(cm, e, type, prevent) {\n var mX, mY;\n if (e.touches) {\n mX = e.touches[0].clientX;\n mY = e.touches[0].clientY;\n } else {\n try { mX = e.clientX; mY = e.clientY; }\n catch(e$1) { return false }\n }\n if (mX >= Math.floor(cm.display.gutters.getBoundingClientRect().right)) { return false }\n if (prevent) { e_preventDefault(e); }\n\n var display = cm.display;\n var lineBox = display.lineDiv.getBoundingClientRect();\n\n if (mY > lineBox.bottom || !hasHandler(cm, type)) { return e_defaultPrevented(e) }\n mY -= lineBox.top - display.viewOffset;\n\n for (var i = 0; i < cm.display.gutterSpecs.length; ++i) {\n var g = display.gutters.childNodes[i];\n if (g && g.getBoundingClientRect().right >= mX) {\n var line = lineAtHeight(cm.doc, mY);\n var gutter = cm.display.gutterSpecs[i];\n signal(cm, type, cm, line, gutter.className, e);\n return e_defaultPrevented(e)\n }\n }\n }\n\n function clickInGutter(cm, e) {\n return gutterEvent(cm, e, \"gutterClick\", true)\n }\n\n // CONTEXT MENU HANDLING\n\n // To make the context menu work, we need to briefly unhide the\n // textarea (making it as unobtrusive as possible) to let the\n // right-click take effect on it.\n function onContextMenu(cm, e) {\n if (eventInWidget(cm.display, e) || contextMenuInGutter(cm, e)) { return }\n if (signalDOMEvent(cm, e, \"contextmenu\")) { return }\n if (!captureRightClick) { cm.display.input.onContextMenu(e); }\n }\n\n function contextMenuInGutter(cm, e) {\n if (!hasHandler(cm, \"gutterContextMenu\")) { return false }\n return gutterEvent(cm, e, \"gutterContextMenu\", false)\n }\n\n function themeChanged(cm) {\n cm.display.wrapper.className = cm.display.wrapper.className.replace(/\\s*cm-s-\\S+/g, \"\") +\n cm.options.theme.replace(/(^|\\s)\\s*/g, \" cm-s-\");\n clearCaches(cm);\n }\n\n var Init = {toString: function(){return \"CodeMirror.Init\"}};\n\n var defaults = {};\n var optionHandlers = {};\n\n function defineOptions(CodeMirror) {\n var optionHandlers = CodeMirror.optionHandlers;\n\n function option(name, deflt, handle, notOnInit) {\n CodeMirror.defaults[name] = deflt;\n if (handle) { optionHandlers[name] =\n notOnInit ? function (cm, val, old) {if (old != Init) { handle(cm, val, old); }} : handle; }\n }\n\n CodeMirror.defineOption = option;\n\n // Passed to option handlers when there is no old value.\n CodeMirror.Init = Init;\n\n // These two are, on init, called from the constructor because they\n // have to be initialized before the editor can start at all.\n option(\"value\", \"\", function (cm, val) { return cm.setValue(val); }, true);\n option(\"mode\", null, function (cm, val) {\n cm.doc.modeOption = val;\n loadMode(cm);\n }, true);\n\n option(\"indentUnit\", 2, loadMode, true);\n option(\"indentWithTabs\", false);\n option(\"smartIndent\", true);\n option(\"tabSize\", 4, function (cm) {\n resetModeState(cm);\n clearCaches(cm);\n regChange(cm);\n }, true);\n\n option(\"lineSeparator\", null, function (cm, val) {\n cm.doc.lineSep = val;\n if (!val) { return }\n var newBreaks = [], lineNo = cm.doc.first;\n cm.doc.iter(function (line) {\n for (var pos = 0;;) {\n var found = line.text.indexOf(val, pos);\n if (found == -1) { break }\n pos = found + val.length;\n newBreaks.push(Pos(lineNo, found));\n }\n lineNo++;\n });\n for (var i = newBreaks.length - 1; i >= 0; i--)\n { replaceRange(cm.doc, val, newBreaks[i], Pos(newBreaks[i].line, newBreaks[i].ch + val.length)); }\n });\n option(\"specialChars\", /[\\u0000-\\u001f\\u007f-\\u009f\\u00ad\\u061c\\u200b\\u200e\\u200f\\u2028\\u2029\\u202d\\u202e\\u2066\\u2067\\u2069\\ufeff\\ufff9-\\ufffc]/g, function (cm, val, old) {\n cm.state.specialChars = new RegExp(val.source + (val.test(\"\\t\") ? \"\" : \"|\\t\"), \"g\");\n if (old != Init) { cm.refresh(); }\n });\n option(\"specialCharPlaceholder\", defaultSpecialCharPlaceholder, function (cm) { return cm.refresh(); }, true);\n option(\"electricChars\", true);\n option(\"inputStyle\", mobile ? \"contenteditable\" : \"textarea\", function () {\n throw new Error(\"inputStyle can not (yet) be changed in a running editor\") // FIXME\n }, true);\n option(\"spellcheck\", false, function (cm, val) { return cm.getInputField().spellcheck = val; }, true);\n option(\"autocorrect\", false, function (cm, val) { return cm.getInputField().autocorrect = val; }, true);\n option(\"autocapitalize\", false, function (cm, val) { return cm.getInputField().autocapitalize = val; }, true);\n option(\"rtlMoveVisually\", !windows);\n option(\"wholeLineUpdateBefore\", true);\n\n option(\"theme\", \"default\", function (cm) {\n themeChanged(cm);\n updateGutters(cm);\n }, true);\n option(\"keyMap\", \"default\", function (cm, val, old) {\n var next = getKeyMap(val);\n var prev = old != Init && getKeyMap(old);\n if (prev && prev.detach) { prev.detach(cm, next); }\n if (next.attach) { next.attach(cm, prev || null); }\n });\n option(\"extraKeys\", null);\n option(\"configureMouse\", null);\n\n option(\"lineWrapping\", false, wrappingChanged, true);\n option(\"gutters\", [], function (cm, val) {\n cm.display.gutterSpecs = getGutters(val, cm.options.lineNumbers);\n updateGutters(cm);\n }, true);\n option(\"fixedGutter\", true, function (cm, val) {\n cm.display.gutters.style.left = val ? compensateForHScroll(cm.display) + \"px\" : \"0\";\n cm.refresh();\n }, true);\n option(\"coverGutterNextToScrollbar\", false, function (cm) { return updateScrollbars(cm); }, true);\n option(\"scrollbarStyle\", \"native\", function (cm) {\n initScrollbars(cm);\n updateScrollbars(cm);\n cm.display.scrollbars.setScrollTop(cm.doc.scrollTop);\n cm.display.scrollbars.setScrollLeft(cm.doc.scrollLeft);\n }, true);\n option(\"lineNumbers\", false, function (cm, val) {\n cm.display.gutterSpecs = getGutters(cm.options.gutters, val);\n updateGutters(cm);\n }, true);\n option(\"firstLineNumber\", 1, updateGutters, true);\n option(\"lineNumberFormatter\", function (integer) { return integer; }, updateGutters, true);\n option(\"showCursorWhenSelecting\", false, updateSelection, true);\n\n option(\"resetSelectionOnContextMenu\", true);\n option(\"lineWiseCopyCut\", true);\n option(\"pasteLinesPerSelection\", true);\n option(\"selectionsMayTouch\", false);\n\n option(\"readOnly\", false, function (cm, val) {\n if (val == \"nocursor\") {\n onBlur(cm);\n cm.display.input.blur();\n }\n cm.display.input.readOnlyChanged(val);\n });\n\n option(\"screenReaderLabel\", null, function (cm, val) {\n val = (val === '') ? null : val;\n cm.display.input.screenReaderLabelChanged(val);\n });\n\n option(\"disableInput\", false, function (cm, val) {if (!val) { cm.display.input.reset(); }}, true);\n option(\"dragDrop\", true, dragDropChanged);\n option(\"allowDropFileTypes\", null);\n\n option(\"cursorBlinkRate\", 530);\n option(\"cursorScrollMargin\", 0);\n option(\"cursorHeight\", 1, updateSelection, true);\n option(\"singleCursorHeightPerLine\", true, updateSelection, true);\n option(\"workTime\", 100);\n option(\"workDelay\", 100);\n option(\"flattenSpans\", true, resetModeState, true);\n option(\"addModeClass\", false, resetModeState, true);\n option(\"pollInterval\", 100);\n option(\"undoDepth\", 200, function (cm, val) { return cm.doc.history.undoDepth = val; });\n option(\"historyEventDelay\", 1250);\n option(\"viewportMargin\", 10, function (cm) { return cm.refresh(); }, true);\n option(\"maxHighlightLength\", 10000, resetModeState, true);\n option(\"moveInputWithCursor\", true, function (cm, val) {\n if (!val) { cm.display.input.resetPosition(); }\n });\n\n option(\"tabindex\", null, function (cm, val) { return cm.display.input.getField().tabIndex = val || \"\"; });\n option(\"autofocus\", null);\n option(\"direction\", \"ltr\", function (cm, val) { return cm.doc.setDirection(val); }, true);\n option(\"phrases\", null);\n }\n\n function dragDropChanged(cm, value, old) {\n var wasOn = old && old != Init;\n if (!value != !wasOn) {\n var funcs = cm.display.dragFunctions;\n var toggle = value ? on : off;\n toggle(cm.display.scroller, \"dragstart\", funcs.start);\n toggle(cm.display.scroller, \"dragenter\", funcs.enter);\n toggle(cm.display.scroller, \"dragover\", funcs.over);\n toggle(cm.display.scroller, \"dragleave\", funcs.leave);\n toggle(cm.display.scroller, \"drop\", funcs.drop);\n }\n }\n\n function wrappingChanged(cm) {\n if (cm.options.lineWrapping) {\n addClass(cm.display.wrapper, \"CodeMirror-wrap\");\n cm.display.sizer.style.minWidth = \"\";\n cm.display.sizerWidth = null;\n } else {\n rmClass(cm.display.wrapper, \"CodeMirror-wrap\");\n findMaxLine(cm);\n }\n estimateLineHeights(cm);\n regChange(cm);\n clearCaches(cm);\n setTimeout(function () { return updateScrollbars(cm); }, 100);\n }\n\n // A CodeMirror instance represents an editor. This is the object\n // that user code is usually dealing with.\n\n function CodeMirror(place, options) {\n var this$1 = this;\n\n if (!(this instanceof CodeMirror)) { return new CodeMirror(place, options) }\n\n this.options = options = options ? copyObj(options) : {};\n // Determine effective options based on given values and defaults.\n copyObj(defaults, options, false);\n\n var doc = options.value;\n if (typeof doc == \"string\") { doc = new Doc(doc, options.mode, null, options.lineSeparator, options.direction); }\n else if (options.mode) { doc.modeOption = options.mode; }\n this.doc = doc;\n\n var input = new CodeMirror.inputStyles[options.inputStyle](this);\n var display = this.display = new Display(place, doc, input, options);\n display.wrapper.CodeMirror = this;\n themeChanged(this);\n if (options.lineWrapping)\n { this.display.wrapper.className += \" CodeMirror-wrap\"; }\n initScrollbars(this);\n\n this.state = {\n keyMaps: [], // stores maps added by addKeyMap\n overlays: [], // highlighting overlays, as added by addOverlay\n modeGen: 0, // bumped when mode/overlay changes, used to invalidate highlighting info\n overwrite: false,\n delayingBlurEvent: false,\n focused: false,\n suppressEdits: false, // used to disable editing during key handlers when in readOnly mode\n pasteIncoming: -1, cutIncoming: -1, // help recognize paste/cut edits in input.poll\n selectingText: false,\n draggingText: false,\n highlight: new Delayed(), // stores highlight worker timeout\n keySeq: null, // Unfinished key sequence\n specialChars: null\n };\n\n if (options.autofocus && !mobile) { display.input.focus(); }\n\n // Override magic textarea content restore that IE sometimes does\n // on our hidden textarea on reload\n if (ie && ie_version < 11) { setTimeout(function () { return this$1.display.input.reset(true); }, 20); }\n\n registerEventHandlers(this);\n ensureGlobalHandlers();\n\n startOperation(this);\n this.curOp.forceUpdate = true;\n attachDoc(this, doc);\n\n if ((options.autofocus && !mobile) || this.hasFocus())\n { setTimeout(function () {\n if (this$1.hasFocus() && !this$1.state.focused) { onFocus(this$1); }\n }, 20); }\n else\n { onBlur(this); }\n\n for (var opt in optionHandlers) { if (optionHandlers.hasOwnProperty(opt))\n { optionHandlers[opt](this, options[opt], Init); } }\n maybeUpdateLineNumberWidth(this);\n if (options.finishInit) { options.finishInit(this); }\n for (var i = 0; i < initHooks.length; ++i) { initHooks[i](this); }\n endOperation(this);\n // Suppress optimizelegibility in Webkit, since it breaks text\n // measuring on line wrapping boundaries.\n if (webkit && options.lineWrapping &&\n getComputedStyle(display.lineDiv).textRendering == \"optimizelegibility\")\n { display.lineDiv.style.textRendering = \"auto\"; }\n }\n\n // The default configuration options.\n CodeMirror.defaults = defaults;\n // Functions to run when options are changed.\n CodeMirror.optionHandlers = optionHandlers;\n\n // Attach the necessary event handlers when initializing the editor\n function registerEventHandlers(cm) {\n var d = cm.display;\n on(d.scroller, \"mousedown\", operation(cm, onMouseDown));\n // Older IE's will not fire a second mousedown for a double click\n if (ie && ie_version < 11)\n { on(d.scroller, \"dblclick\", operation(cm, function (e) {\n if (signalDOMEvent(cm, e)) { return }\n var pos = posFromMouse(cm, e);\n if (!pos || clickInGutter(cm, e) || eventInWidget(cm.display, e)) { return }\n e_preventDefault(e);\n var word = cm.findWordAt(pos);\n extendSelection(cm.doc, word.anchor, word.head);\n })); }\n else\n { on(d.scroller, \"dblclick\", function (e) { return signalDOMEvent(cm, e) || e_preventDefault(e); }); }\n // Some browsers fire contextmenu *after* opening the menu, at\n // which point we can't mess with it anymore. Context menu is\n // handled in onMouseDown for these browsers.\n on(d.scroller, \"contextmenu\", function (e) { return onContextMenu(cm, e); });\n on(d.input.getField(), \"contextmenu\", function (e) {\n if (!d.scroller.contains(e.target)) { onContextMenu(cm, e); }\n });\n\n // Used to suppress mouse event handling when a touch happens\n var touchFinished, prevTouch = {end: 0};\n function finishTouch() {\n if (d.activeTouch) {\n touchFinished = setTimeout(function () { return d.activeTouch = null; }, 1000);\n prevTouch = d.activeTouch;\n prevTouch.end = +new Date;\n }\n }\n function isMouseLikeTouchEvent(e) {\n if (e.touches.length != 1) { return false }\n var touch = e.touches[0];\n return touch.radiusX <= 1 && touch.radiusY <= 1\n }\n function farAway(touch, other) {\n if (other.left == null) { return true }\n var dx = other.left - touch.left, dy = other.top - touch.top;\n return dx * dx + dy * dy > 20 * 20\n }\n on(d.scroller, \"touchstart\", function (e) {\n if (!signalDOMEvent(cm, e) && !isMouseLikeTouchEvent(e) && !clickInGutter(cm, e)) {\n d.input.ensurePolled();\n clearTimeout(touchFinished);\n var now = +new Date;\n d.activeTouch = {start: now, moved: false,\n prev: now - prevTouch.end <= 300 ? prevTouch : null};\n if (e.touches.length == 1) {\n d.activeTouch.left = e.touches[0].pageX;\n d.activeTouch.top = e.touches[0].pageY;\n }\n }\n });\n on(d.scroller, \"touchmove\", function () {\n if (d.activeTouch) { d.activeTouch.moved = true; }\n });\n on(d.scroller, \"touchend\", function (e) {\n var touch = d.activeTouch;\n if (touch && !eventInWidget(d, e) && touch.left != null &&\n !touch.moved && new Date - touch.start < 300) {\n var pos = cm.coordsChar(d.activeTouch, \"page\"), range;\n if (!touch.prev || farAway(touch, touch.prev)) // Single tap\n { range = new Range(pos, pos); }\n else if (!touch.prev.prev || farAway(touch, touch.prev.prev)) // Double tap\n { range = cm.findWordAt(pos); }\n else // Triple tap\n { range = new Range(Pos(pos.line, 0), clipPos(cm.doc, Pos(pos.line + 1, 0))); }\n cm.setSelection(range.anchor, range.head);\n cm.focus();\n e_preventDefault(e);\n }\n finishTouch();\n });\n on(d.scroller, \"touchcancel\", finishTouch);\n\n // Sync scrolling between fake scrollbars and real scrollable\n // area, ensure viewport is updated when scrolling.\n on(d.scroller, \"scroll\", function () {\n if (d.scroller.clientHeight) {\n updateScrollTop(cm, d.scroller.scrollTop);\n setScrollLeft(cm, d.scroller.scrollLeft, true);\n signal(cm, \"scroll\", cm);\n }\n });\n\n // Listen to wheel events in order to try and update the viewport on time.\n on(d.scroller, \"mousewheel\", function (e) { return onScrollWheel(cm, e); });\n on(d.scroller, \"DOMMouseScroll\", function (e) { return onScrollWheel(cm, e); });\n\n // Prevent wrapper from ever scrolling\n on(d.wrapper, \"scroll\", function () { return d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; });\n\n d.dragFunctions = {\n enter: function (e) {if (!signalDOMEvent(cm, e)) { e_stop(e); }},\n over: function (e) {if (!signalDOMEvent(cm, e)) { onDragOver(cm, e); e_stop(e); }},\n start: function (e) { return onDragStart(cm, e); },\n drop: operation(cm, onDrop),\n leave: function (e) {if (!signalDOMEvent(cm, e)) { clearDragCursor(cm); }}\n };\n\n var inp = d.input.getField();\n on(inp, \"keyup\", function (e) { return onKeyUp.call(cm, e); });\n on(inp, \"keydown\", operation(cm, onKeyDown));\n on(inp, \"keypress\", operation(cm, onKeyPress));\n on(inp, \"focus\", function (e) { return onFocus(cm, e); });\n on(inp, \"blur\", function (e) { return onBlur(cm, e); });\n }\n\n var initHooks = [];\n CodeMirror.defineInitHook = function (f) { return initHooks.push(f); };\n\n // Indent the given line. The how parameter can be \"smart\",\n // \"add\"/null, \"subtract\", or \"prev\". When aggressive is false\n // (typically set to true for forced single-line indents), empty\n // lines are not indented, and places where the mode returns Pass\n // are left alone.\n function indentLine(cm, n, how, aggressive) {\n var doc = cm.doc, state;\n if (how == null) { how = \"add\"; }\n if (how == \"smart\") {\n // Fall back to \"prev\" when the mode doesn't have an indentation\n // method.\n if (!doc.mode.indent) { how = \"prev\"; }\n else { state = getContextBefore(cm, n).state; }\n }\n\n var tabSize = cm.options.tabSize;\n var line = getLine(doc, n), curSpace = countColumn(line.text, null, tabSize);\n if (line.stateAfter) { line.stateAfter = null; }\n var curSpaceString = line.text.match(/^\\s*/)[0], indentation;\n if (!aggressive && !/\\S/.test(line.text)) {\n indentation = 0;\n how = \"not\";\n } else if (how == \"smart\") {\n indentation = doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text);\n if (indentation == Pass || indentation > 150) {\n if (!aggressive) { return }\n how = \"prev\";\n }\n }\n if (how == \"prev\") {\n if (n > doc.first) { indentation = countColumn(getLine(doc, n-1).text, null, tabSize); }\n else { indentation = 0; }\n } else if (how == \"add\") {\n indentation = curSpace + cm.options.indentUnit;\n } else if (how == \"subtract\") {\n indentation = curSpace - cm.options.indentUnit;\n } else if (typeof how == \"number\") {\n indentation = curSpace + how;\n }\n indentation = Math.max(0, indentation);\n\n var indentString = \"\", pos = 0;\n if (cm.options.indentWithTabs)\n { for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += \"\\t\";} }\n if (pos < indentation) { indentString += spaceStr(indentation - pos); }\n\n if (indentString != curSpaceString) {\n replaceRange(doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), \"+input\");\n line.stateAfter = null;\n return true\n } else {\n // Ensure that, if the cursor was in the whitespace at the start\n // of the line, it is moved to the end of that space.\n for (var i$1 = 0; i$1 < doc.sel.ranges.length; i$1++) {\n var range = doc.sel.ranges[i$1];\n if (range.head.line == n && range.head.ch < curSpaceString.length) {\n var pos$1 = Pos(n, curSpaceString.length);\n replaceOneSelection(doc, i$1, new Range(pos$1, pos$1));\n break\n }\n }\n }\n }\n\n // This will be set to a {lineWise: bool, text: [string]} object, so\n // that, when pasting, we know what kind of selections the copied\n // text was made out of.\n var lastCopied = null;\n\n function setLastCopied(newLastCopied) {\n lastCopied = newLastCopied;\n }\n\n function applyTextInput(cm, inserted, deleted, sel, origin) {\n var doc = cm.doc;\n cm.display.shift = false;\n if (!sel) { sel = doc.sel; }\n\n var recent = +new Date - 200;\n var paste = origin == \"paste\" || cm.state.pasteIncoming > recent;\n var textLines = splitLinesAuto(inserted), multiPaste = null;\n // When pasting N lines into N selections, insert one line per selection\n if (paste && sel.ranges.length > 1) {\n if (lastCopied && lastCopied.text.join(\"\\n\") == inserted) {\n if (sel.ranges.length % lastCopied.text.length == 0) {\n multiPaste = [];\n for (var i = 0; i < lastCopied.text.length; i++)\n { multiPaste.push(doc.splitLines(lastCopied.text[i])); }\n }\n } else if (textLines.length == sel.ranges.length && cm.options.pasteLinesPerSelection) {\n multiPaste = map(textLines, function (l) { return [l]; });\n }\n }\n\n var updateInput = cm.curOp.updateInput;\n // Normal behavior is to insert the new text into every selection\n for (var i$1 = sel.ranges.length - 1; i$1 >= 0; i$1--) {\n var range = sel.ranges[i$1];\n var from = range.from(), to = range.to();\n if (range.empty()) {\n if (deleted && deleted > 0) // Handle deletion\n { from = Pos(from.line, from.ch - deleted); }\n else if (cm.state.overwrite && !paste) // Handle overwrite\n { to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + lst(textLines).length)); }\n else if (paste && lastCopied && lastCopied.lineWise && lastCopied.text.join(\"\\n\") == textLines.join(\"\\n\"))\n { from = to = Pos(from.line, 0); }\n }\n var changeEvent = {from: from, to: to, text: multiPaste ? multiPaste[i$1 % multiPaste.length] : textLines,\n origin: origin || (paste ? \"paste\" : cm.state.cutIncoming > recent ? \"cut\" : \"+input\")};\n makeChange(cm.doc, changeEvent);\n signalLater(cm, \"inputRead\", cm, changeEvent);\n }\n if (inserted && !paste)\n { triggerElectric(cm, inserted); }\n\n ensureCursorVisible(cm);\n if (cm.curOp.updateInput < 2) { cm.curOp.updateInput = updateInput; }\n cm.curOp.typing = true;\n cm.state.pasteIncoming = cm.state.cutIncoming = -1;\n }\n\n function handlePaste(e, cm) {\n var pasted = e.clipboardData && e.clipboardData.getData(\"Text\");\n if (pasted) {\n e.preventDefault();\n if (!cm.isReadOnly() && !cm.options.disableInput && cm.hasFocus())\n { runInOp(cm, function () { return applyTextInput(cm, pasted, 0, null, \"paste\"); }); }\n return true\n }\n }\n\n function triggerElectric(cm, inserted) {\n // When an 'electric' character is inserted, immediately trigger a reindent\n if (!cm.options.electricChars || !cm.options.smartIndent) { return }\n var sel = cm.doc.sel;\n\n for (var i = sel.ranges.length - 1; i >= 0; i--) {\n var range = sel.ranges[i];\n if (range.head.ch > 100 || (i && sel.ranges[i - 1].head.line == range.head.line)) { continue }\n var mode = cm.getModeAt(range.head);\n var indented = false;\n if (mode.electricChars) {\n for (var j = 0; j < mode.electricChars.length; j++)\n { if (inserted.indexOf(mode.electricChars.charAt(j)) > -1) {\n indented = indentLine(cm, range.head.line, \"smart\");\n break\n } }\n } else if (mode.electricInput) {\n if (mode.electricInput.test(getLine(cm.doc, range.head.line).text.slice(0, range.head.ch)))\n { indented = indentLine(cm, range.head.line, \"smart\"); }\n }\n if (indented) { signalLater(cm, \"electricInput\", cm, range.head.line); }\n }\n }\n\n function copyableRanges(cm) {\n var text = [], ranges = [];\n for (var i = 0; i < cm.doc.sel.ranges.length; i++) {\n var line = cm.doc.sel.ranges[i].head.line;\n var lineRange = {anchor: Pos(line, 0), head: Pos(line + 1, 0)};\n ranges.push(lineRange);\n text.push(cm.getRange(lineRange.anchor, lineRange.head));\n }\n return {text: text, ranges: ranges}\n }\n\n function disableBrowserMagic(field, spellcheck, autocorrect, autocapitalize) {\n field.setAttribute(\"autocorrect\", autocorrect ? \"on\" : \"off\");\n field.setAttribute(\"autocapitalize\", autocapitalize ? \"on\" : \"off\");\n field.setAttribute(\"spellcheck\", !!spellcheck);\n }\n\n function hiddenTextarea() {\n var te = elt(\"textarea\", null, null, \"position: absolute; bottom: -1em; padding: 0; width: 1px; height: 1em; min-height: 1em; outline: none\");\n var div = elt(\"div\", [te], null, \"overflow: hidden; position: relative; width: 3px; height: 0px;\");\n // The textarea is kept positioned near the cursor to prevent the\n // fact that it'll be scrolled into view on input from scrolling\n // our fake cursor out of view. On webkit, when wrap=off, paste is\n // very slow. So make the area wide instead.\n if (webkit) { te.style.width = \"1000px\"; }\n else { te.setAttribute(\"wrap\", \"off\"); }\n // If border: 0; -- iOS fails to open keyboard (issue #1287)\n if (ios) { te.style.border = \"1px solid black\"; }\n return div\n }\n\n // The publicly visible API. Note that methodOp(f) means\n // 'wrap f in an operation, performed on its `this` parameter'.\n\n // This is not the complete set of editor methods. Most of the\n // methods defined on the Doc type are also injected into\n // CodeMirror.prototype, for backwards compatibility and\n // convenience.\n\n function addEditorMethods(CodeMirror) {\n var optionHandlers = CodeMirror.optionHandlers;\n\n var helpers = CodeMirror.helpers = {};\n\n CodeMirror.prototype = {\n constructor: CodeMirror,\n focus: function(){win(this).focus(); this.display.input.focus();},\n\n setOption: function(option, value) {\n var options = this.options, old = options[option];\n if (options[option] == value && option != \"mode\") { return }\n options[option] = value;\n if (optionHandlers.hasOwnProperty(option))\n { operation(this, optionHandlers[option])(this, value, old); }\n signal(this, \"optionChange\", this, option);\n },\n\n getOption: function(option) {return this.options[option]},\n getDoc: function() {return this.doc},\n\n addKeyMap: function(map, bottom) {\n this.state.keyMaps[bottom ? \"push\" : \"unshift\"](getKeyMap(map));\n },\n removeKeyMap: function(map) {\n var maps = this.state.keyMaps;\n for (var i = 0; i < maps.length; ++i)\n { if (maps[i] == map || maps[i].name == map) {\n maps.splice(i, 1);\n return true\n } }\n },\n\n addOverlay: methodOp(function(spec, options) {\n var mode = spec.token ? spec : CodeMirror.getMode(this.options, spec);\n if (mode.startState) { throw new Error(\"Overlays may not be stateful.\") }\n insertSorted(this.state.overlays,\n {mode: mode, modeSpec: spec, opaque: options && options.opaque,\n priority: (options && options.priority) || 0},\n function (overlay) { return overlay.priority; });\n this.state.modeGen++;\n regChange(this);\n }),\n removeOverlay: methodOp(function(spec) {\n var overlays = this.state.overlays;\n for (var i = 0; i < overlays.length; ++i) {\n var cur = overlays[i].modeSpec;\n if (cur == spec || typeof spec == \"string\" && cur.name == spec) {\n overlays.splice(i, 1);\n this.state.modeGen++;\n regChange(this);\n return\n }\n }\n }),\n\n indentLine: methodOp(function(n, dir, aggressive) {\n if (typeof dir != \"string\" && typeof dir != \"number\") {\n if (dir == null) { dir = this.options.smartIndent ? \"smart\" : \"prev\"; }\n else { dir = dir ? \"add\" : \"subtract\"; }\n }\n if (isLine(this.doc, n)) { indentLine(this, n, dir, aggressive); }\n }),\n indentSelection: methodOp(function(how) {\n var ranges = this.doc.sel.ranges, end = -1;\n for (var i = 0; i < ranges.length; i++) {\n var range = ranges[i];\n if (!range.empty()) {\n var from = range.from(), to = range.to();\n var start = Math.max(end, from.line);\n end = Math.min(this.lastLine(), to.line - (to.ch ? 0 : 1)) + 1;\n for (var j = start; j < end; ++j)\n { indentLine(this, j, how); }\n var newRanges = this.doc.sel.ranges;\n if (from.ch == 0 && ranges.length == newRanges.length && newRanges[i].from().ch > 0)\n { replaceOneSelection(this.doc, i, new Range(from, newRanges[i].to()), sel_dontScroll); }\n } else if (range.head.line > end) {\n indentLine(this, range.head.line, how, true);\n end = range.head.line;\n if (i == this.doc.sel.primIndex) { ensureCursorVisible(this); }\n }\n }\n }),\n\n // Fetch the parser token for a given character. Useful for hacks\n // that want to inspect the mode state (say, for completion).\n getTokenAt: function(pos, precise) {\n return takeToken(this, pos, precise)\n },\n\n getLineTokens: function(line, precise) {\n return takeToken(this, Pos(line), precise, true)\n },\n\n getTokenTypeAt: function(pos) {\n pos = clipPos(this.doc, pos);\n var styles = getLineStyles(this, getLine(this.doc, pos.line));\n var before = 0, after = (styles.length - 1) / 2, ch = pos.ch;\n var type;\n if (ch == 0) { type = styles[2]; }\n else { for (;;) {\n var mid = (before + after) >> 1;\n if ((mid ? styles[mid * 2 - 1] : 0) >= ch) { after = mid; }\n else if (styles[mid * 2 + 1] < ch) { before = mid + 1; }\n else { type = styles[mid * 2 + 2]; break }\n } }\n var cut = type ? type.indexOf(\"overlay \") : -1;\n return cut < 0 ? type : cut == 0 ? null : type.slice(0, cut - 1)\n },\n\n getModeAt: function(pos) {\n var mode = this.doc.mode;\n if (!mode.innerMode) { return mode }\n return CodeMirror.innerMode(mode, this.getTokenAt(pos).state).mode\n },\n\n getHelper: function(pos, type) {\n return this.getHelpers(pos, type)[0]\n },\n\n getHelpers: function(pos, type) {\n var found = [];\n if (!helpers.hasOwnProperty(type)) { return found }\n var help = helpers[type], mode = this.getModeAt(pos);\n if (typeof mode[type] == \"string\") {\n if (help[mode[type]]) { found.push(help[mode[type]]); }\n } else if (mode[type]) {\n for (var i = 0; i < mode[type].length; i++) {\n var val = help[mode[type][i]];\n if (val) { found.push(val); }\n }\n } else if (mode.helperType && help[mode.helperType]) {\n found.push(help[mode.helperType]);\n } else if (help[mode.name]) {\n found.push(help[mode.name]);\n }\n for (var i$1 = 0; i$1 < help._global.length; i$1++) {\n var cur = help._global[i$1];\n if (cur.pred(mode, this) && indexOf(found, cur.val) == -1)\n { found.push(cur.val); }\n }\n return found\n },\n\n getStateAfter: function(line, precise) {\n var doc = this.doc;\n line = clipLine(doc, line == null ? doc.first + doc.size - 1: line);\n return getContextBefore(this, line + 1, precise).state\n },\n\n cursorCoords: function(start, mode) {\n var pos, range = this.doc.sel.primary();\n if (start == null) { pos = range.head; }\n else if (typeof start == \"object\") { pos = clipPos(this.doc, start); }\n else { pos = start ? range.from() : range.to(); }\n return cursorCoords(this, pos, mode || \"page\")\n },\n\n charCoords: function(pos, mode) {\n return charCoords(this, clipPos(this.doc, pos), mode || \"page\")\n },\n\n coordsChar: function(coords, mode) {\n coords = fromCoordSystem(this, coords, mode || \"page\");\n return coordsChar(this, coords.left, coords.top)\n },\n\n lineAtHeight: function(height, mode) {\n height = fromCoordSystem(this, {top: height, left: 0}, mode || \"page\").top;\n return lineAtHeight(this.doc, height + this.display.viewOffset)\n },\n heightAtLine: function(line, mode, includeWidgets) {\n var end = false, lineObj;\n if (typeof line == \"number\") {\n var last = this.doc.first + this.doc.size - 1;\n if (line < this.doc.first) { line = this.doc.first; }\n else if (line > last) { line = last; end = true; }\n lineObj = getLine(this.doc, line);\n } else {\n lineObj = line;\n }\n return intoCoordSystem(this, lineObj, {top: 0, left: 0}, mode || \"page\", includeWidgets || end).top +\n (end ? this.doc.height - heightAtLine(lineObj) : 0)\n },\n\n defaultTextHeight: function() { return textHeight(this.display) },\n defaultCharWidth: function() { return charWidth(this.display) },\n\n getViewport: function() { return {from: this.display.viewFrom, to: this.display.viewTo}},\n\n addWidget: function(pos, node, scroll, vert, horiz) {\n var display = this.display;\n pos = cursorCoords(this, clipPos(this.doc, pos));\n var top = pos.bottom, left = pos.left;\n node.style.position = \"absolute\";\n node.setAttribute(\"cm-ignore-events\", \"true\");\n this.display.input.setUneditable(node);\n display.sizer.appendChild(node);\n if (vert == \"over\") {\n top = pos.top;\n } else if (vert == \"above\" || vert == \"near\") {\n var vspace = Math.max(display.wrapper.clientHeight, this.doc.height),\n hspace = Math.max(display.sizer.clientWidth, display.lineSpace.clientWidth);\n // Default to positioning above (if specified and possible); otherwise default to positioning below\n if ((vert == 'above' || pos.bottom + node.offsetHeight > vspace) && pos.top > node.offsetHeight)\n { top = pos.top - node.offsetHeight; }\n else if (pos.bottom + node.offsetHeight <= vspace)\n { top = pos.bottom; }\n if (left + node.offsetWidth > hspace)\n { left = hspace - node.offsetWidth; }\n }\n node.style.top = top + \"px\";\n node.style.left = node.style.right = \"\";\n if (horiz == \"right\") {\n left = display.sizer.clientWidth - node.offsetWidth;\n node.style.right = \"0px\";\n } else {\n if (horiz == \"left\") { left = 0; }\n else if (horiz == \"middle\") { left = (display.sizer.clientWidth - node.offsetWidth) / 2; }\n node.style.left = left + \"px\";\n }\n if (scroll)\n { scrollIntoView(this, {left: left, top: top, right: left + node.offsetWidth, bottom: top + node.offsetHeight}); }\n },\n\n triggerOnKeyDown: methodOp(onKeyDown),\n triggerOnKeyPress: methodOp(onKeyPress),\n triggerOnKeyUp: onKeyUp,\n triggerOnMouseDown: methodOp(onMouseDown),\n\n execCommand: function(cmd) {\n if (commands.hasOwnProperty(cmd))\n { return commands[cmd].call(null, this) }\n },\n\n triggerElectric: methodOp(function(text) { triggerElectric(this, text); }),\n\n findPosH: function(from, amount, unit, visually) {\n var dir = 1;\n if (amount < 0) { dir = -1; amount = -amount; }\n var cur = clipPos(this.doc, from);\n for (var i = 0; i < amount; ++i) {\n cur = findPosH(this.doc, cur, dir, unit, visually);\n if (cur.hitSide) { break }\n }\n return cur\n },\n\n moveH: methodOp(function(dir, unit) {\n var this$1 = this;\n\n this.extendSelectionsBy(function (range) {\n if (this$1.display.shift || this$1.doc.extend || range.empty())\n { return findPosH(this$1.doc, range.head, dir, unit, this$1.options.rtlMoveVisually) }\n else\n { return dir < 0 ? range.from() : range.to() }\n }, sel_move);\n }),\n\n deleteH: methodOp(function(dir, unit) {\n var sel = this.doc.sel, doc = this.doc;\n if (sel.somethingSelected())\n { doc.replaceSelection(\"\", null, \"+delete\"); }\n else\n { deleteNearSelection(this, function (range) {\n var other = findPosH(doc, range.head, dir, unit, false);\n return dir < 0 ? {from: other, to: range.head} : {from: range.head, to: other}\n }); }\n }),\n\n findPosV: function(from, amount, unit, goalColumn) {\n var dir = 1, x = goalColumn;\n if (amount < 0) { dir = -1; amount = -amount; }\n var cur = clipPos(this.doc, from);\n for (var i = 0; i < amount; ++i) {\n var coords = cursorCoords(this, cur, \"div\");\n if (x == null) { x = coords.left; }\n else { coords.left = x; }\n cur = findPosV(this, coords, dir, unit);\n if (cur.hitSide) { break }\n }\n return cur\n },\n\n moveV: methodOp(function(dir, unit) {\n var this$1 = this;\n\n var doc = this.doc, goals = [];\n var collapse = !this.display.shift && !doc.extend && doc.sel.somethingSelected();\n doc.extendSelectionsBy(function (range) {\n if (collapse)\n { return dir < 0 ? range.from() : range.to() }\n var headPos = cursorCoords(this$1, range.head, \"div\");\n if (range.goalColumn != null) { headPos.left = range.goalColumn; }\n goals.push(headPos.left);\n var pos = findPosV(this$1, headPos, dir, unit);\n if (unit == \"page\" && range == doc.sel.primary())\n { addToScrollTop(this$1, charCoords(this$1, pos, \"div\").top - headPos.top); }\n return pos\n }, sel_move);\n if (goals.length) { for (var i = 0; i < doc.sel.ranges.length; i++)\n { doc.sel.ranges[i].goalColumn = goals[i]; } }\n }),\n\n // Find the word at the given position (as returned by coordsChar).\n findWordAt: function(pos) {\n var doc = this.doc, line = getLine(doc, pos.line).text;\n var start = pos.ch, end = pos.ch;\n if (line) {\n var helper = this.getHelper(pos, \"wordChars\");\n if ((pos.sticky == \"before\" || end == line.length) && start) { --start; } else { ++end; }\n var startChar = line.charAt(start);\n var check = isWordChar(startChar, helper)\n ? function (ch) { return isWordChar(ch, helper); }\n : /\\s/.test(startChar) ? function (ch) { return /\\s/.test(ch); }\n : function (ch) { return (!/\\s/.test(ch) && !isWordChar(ch)); };\n while (start > 0 && check(line.charAt(start - 1))) { --start; }\n while (end < line.length && check(line.charAt(end))) { ++end; }\n }\n return new Range(Pos(pos.line, start), Pos(pos.line, end))\n },\n\n toggleOverwrite: function(value) {\n if (value != null && value == this.state.overwrite) { return }\n if (this.state.overwrite = !this.state.overwrite)\n { addClass(this.display.cursorDiv, \"CodeMirror-overwrite\"); }\n else\n { rmClass(this.display.cursorDiv, \"CodeMirror-overwrite\"); }\n\n signal(this, \"overwriteToggle\", this, this.state.overwrite);\n },\n hasFocus: function() { return this.display.input.getField() == activeElt(root(this)) },\n isReadOnly: function() { return !!(this.options.readOnly || this.doc.cantEdit) },\n\n scrollTo: methodOp(function (x, y) { scrollToCoords(this, x, y); }),\n getScrollInfo: function() {\n var scroller = this.display.scroller;\n return {left: scroller.scrollLeft, top: scroller.scrollTop,\n height: scroller.scrollHeight - scrollGap(this) - this.display.barHeight,\n width: scroller.scrollWidth - scrollGap(this) - this.display.barWidth,\n clientHeight: displayHeight(this), clientWidth: displayWidth(this)}\n },\n\n scrollIntoView: methodOp(function(range, margin) {\n if (range == null) {\n range = {from: this.doc.sel.primary().head, to: null};\n if (margin == null) { margin = this.options.cursorScrollMargin; }\n } else if (typeof range == \"number\") {\n range = {from: Pos(range, 0), to: null};\n } else if (range.from == null) {\n range = {from: range, to: null};\n }\n if (!range.to) { range.to = range.from; }\n range.margin = margin || 0;\n\n if (range.from.line != null) {\n scrollToRange(this, range);\n } else {\n scrollToCoordsRange(this, range.from, range.to, range.margin);\n }\n }),\n\n setSize: methodOp(function(width, height) {\n var this$1 = this;\n\n var interpret = function (val) { return typeof val == \"number\" || /^\\d+$/.test(String(val)) ? val + \"px\" : val; };\n if (width != null) { this.display.wrapper.style.width = interpret(width); }\n if (height != null) { this.display.wrapper.style.height = interpret(height); }\n if (this.options.lineWrapping) { clearLineMeasurementCache(this); }\n var lineNo = this.display.viewFrom;\n this.doc.iter(lineNo, this.display.viewTo, function (line) {\n if (line.widgets) { for (var i = 0; i < line.widgets.length; i++)\n { if (line.widgets[i].noHScroll) { regLineChange(this$1, lineNo, \"widget\"); break } } }\n ++lineNo;\n });\n this.curOp.forceUpdate = true;\n signal(this, \"refresh\", this);\n }),\n\n operation: function(f){return runInOp(this, f)},\n startOperation: function(){return startOperation(this)},\n endOperation: function(){return endOperation(this)},\n\n refresh: methodOp(function() {\n var oldHeight = this.display.cachedTextHeight;\n regChange(this);\n this.curOp.forceUpdate = true;\n clearCaches(this);\n scrollToCoords(this, this.doc.scrollLeft, this.doc.scrollTop);\n updateGutterSpace(this.display);\n if (oldHeight == null || Math.abs(oldHeight - textHeight(this.display)) > .5 || this.options.lineWrapping)\n { estimateLineHeights(this); }\n signal(this, \"refresh\", this);\n }),\n\n swapDoc: methodOp(function(doc) {\n var old = this.doc;\n old.cm = null;\n // Cancel the current text selection if any (#5821)\n if (this.state.selectingText) { this.state.selectingText(); }\n attachDoc(this, doc);\n clearCaches(this);\n this.display.input.reset();\n scrollToCoords(this, doc.scrollLeft, doc.scrollTop);\n this.curOp.forceScroll = true;\n signalLater(this, \"swapDoc\", this, old);\n return old\n }),\n\n phrase: function(phraseText) {\n var phrases = this.options.phrases;\n return phrases && Object.prototype.hasOwnProperty.call(phrases, phraseText) ? phrases[phraseText] : phraseText\n },\n\n getInputField: function(){return this.display.input.getField()},\n getWrapperElement: function(){return this.display.wrapper},\n getScrollerElement: function(){return this.display.scroller},\n getGutterElement: function(){return this.display.gutters}\n };\n eventMixin(CodeMirror);\n\n CodeMirror.registerHelper = function(type, name, value) {\n if (!helpers.hasOwnProperty(type)) { helpers[type] = CodeMirror[type] = {_global: []}; }\n helpers[type][name] = value;\n };\n CodeMirror.registerGlobalHelper = function(type, name, predicate, value) {\n CodeMirror.registerHelper(type, name, value);\n helpers[type]._global.push({pred: predicate, val: value});\n };\n }\n\n // Used for horizontal relative motion. Dir is -1 or 1 (left or\n // right), unit can be \"codepoint\", \"char\", \"column\" (like char, but\n // doesn't cross line boundaries), \"word\" (across next word), or\n // \"group\" (to the start of next group of word or\n // non-word-non-whitespace chars). The visually param controls\n // whether, in right-to-left text, direction 1 means to move towards\n // the next index in the string, or towards the character to the right\n // of the current position. The resulting position will have a\n // hitSide=true property if it reached the end of the document.\n function findPosH(doc, pos, dir, unit, visually) {\n var oldPos = pos;\n var origDir = dir;\n var lineObj = getLine(doc, pos.line);\n var lineDir = visually && doc.direction == \"rtl\" ? -dir : dir;\n function findNextLine() {\n var l = pos.line + lineDir;\n if (l < doc.first || l >= doc.first + doc.size) { return false }\n pos = new Pos(l, pos.ch, pos.sticky);\n return lineObj = getLine(doc, l)\n }\n function moveOnce(boundToLine) {\n var next;\n if (unit == \"codepoint\") {\n var ch = lineObj.text.charCodeAt(pos.ch + (dir > 0 ? 0 : -1));\n if (isNaN(ch)) {\n next = null;\n } else {\n var astral = dir > 0 ? ch >= 0xD800 && ch < 0xDC00 : ch >= 0xDC00 && ch < 0xDFFF;\n next = new Pos(pos.line, Math.max(0, Math.min(lineObj.text.length, pos.ch + dir * (astral ? 2 : 1))), -dir);\n }\n } else if (visually) {\n next = moveVisually(doc.cm, lineObj, pos, dir);\n } else {\n next = moveLogically(lineObj, pos, dir);\n }\n if (next == null) {\n if (!boundToLine && findNextLine())\n { pos = endOfLine(visually, doc.cm, lineObj, pos.line, lineDir); }\n else\n { return false }\n } else {\n pos = next;\n }\n return true\n }\n\n if (unit == \"char\" || unit == \"codepoint\") {\n moveOnce();\n } else if (unit == \"column\") {\n moveOnce(true);\n } else if (unit == \"word\" || unit == \"group\") {\n var sawType = null, group = unit == \"group\";\n var helper = doc.cm && doc.cm.getHelper(pos, \"wordChars\");\n for (var first = true;; first = false) {\n if (dir < 0 && !moveOnce(!first)) { break }\n var cur = lineObj.text.charAt(pos.ch) || \"\\n\";\n var type = isWordChar(cur, helper) ? \"w\"\n : group && cur == \"\\n\" ? \"n\"\n : !group || /\\s/.test(cur) ? null\n : \"p\";\n if (group && !first && !type) { type = \"s\"; }\n if (sawType && sawType != type) {\n if (dir < 0) {dir = 1; moveOnce(); pos.sticky = \"after\";}\n break\n }\n\n if (type) { sawType = type; }\n if (dir > 0 && !moveOnce(!first)) { break }\n }\n }\n var result = skipAtomic(doc, pos, oldPos, origDir, true);\n if (equalCursorPos(oldPos, result)) { result.hitSide = true; }\n return result\n }\n\n // For relative vertical movement. Dir may be -1 or 1. Unit can be\n // \"page\" or \"line\". The resulting position will have a hitSide=true\n // property if it reached the end of the document.\n function findPosV(cm, pos, dir, unit) {\n var doc = cm.doc, x = pos.left, y;\n if (unit == \"page\") {\n var pageSize = Math.min(cm.display.wrapper.clientHeight, win(cm).innerHeight || doc(cm).documentElement.clientHeight);\n var moveAmount = Math.max(pageSize - .5 * textHeight(cm.display), 3);\n y = (dir > 0 ? pos.bottom : pos.top) + dir * moveAmount;\n\n } else if (unit == \"line\") {\n y = dir > 0 ? pos.bottom + 3 : pos.top - 3;\n }\n var target;\n for (;;) {\n target = coordsChar(cm, x, y);\n if (!target.outside) { break }\n if (dir < 0 ? y <= 0 : y >= doc.height) { target.hitSide = true; break }\n y += dir * 5;\n }\n return target\n }\n\n // CONTENTEDITABLE INPUT STYLE\n\n var ContentEditableInput = function(cm) {\n this.cm = cm;\n this.lastAnchorNode = this.lastAnchorOffset = this.lastFocusNode = this.lastFocusOffset = null;\n this.polling = new Delayed();\n this.composing = null;\n this.gracePeriod = false;\n this.readDOMTimeout = null;\n };\n\n ContentEditableInput.prototype.init = function (display) {\n var this$1 = this;\n\n var input = this, cm = input.cm;\n var div = input.div = display.lineDiv;\n div.contentEditable = true;\n disableBrowserMagic(div, cm.options.spellcheck, cm.options.autocorrect, cm.options.autocapitalize);\n\n function belongsToInput(e) {\n for (var t = e.target; t; t = t.parentNode) {\n if (t == div) { return true }\n if (/\\bCodeMirror-(?:line)?widget\\b/.test(t.className)) { break }\n }\n return false\n }\n\n on(div, \"paste\", function (e) {\n if (!belongsToInput(e) || signalDOMEvent(cm, e) || handlePaste(e, cm)) { return }\n // IE doesn't fire input events, so we schedule a read for the pasted content in this way\n if (ie_version <= 11) { setTimeout(operation(cm, function () { return this$1.updateFromDOM(); }), 20); }\n });\n\n on(div, \"compositionstart\", function (e) {\n this$1.composing = {data: e.data, done: false};\n });\n on(div, \"compositionupdate\", function (e) {\n if (!this$1.composing) { this$1.composing = {data: e.data, done: false}; }\n });\n on(div, \"compositionend\", function (e) {\n if (this$1.composing) {\n if (e.data != this$1.composing.data) { this$1.readFromDOMSoon(); }\n this$1.composing.done = true;\n }\n });\n\n on(div, \"touchstart\", function () { return input.forceCompositionEnd(); });\n\n on(div, \"input\", function () {\n if (!this$1.composing) { this$1.readFromDOMSoon(); }\n });\n\n function onCopyCut(e) {\n if (!belongsToInput(e) || signalDOMEvent(cm, e)) { return }\n if (cm.somethingSelected()) {\n setLastCopied({lineWise: false, text: cm.getSelections()});\n if (e.type == \"cut\") { cm.replaceSelection(\"\", null, \"cut\"); }\n } else if (!cm.options.lineWiseCopyCut) {\n return\n } else {\n var ranges = copyableRanges(cm);\n setLastCopied({lineWise: true, text: ranges.text});\n if (e.type == \"cut\") {\n cm.operation(function () {\n cm.setSelections(ranges.ranges, 0, sel_dontScroll);\n cm.replaceSelection(\"\", null, \"cut\");\n });\n }\n }\n if (e.clipboardData) {\n e.clipboardData.clearData();\n var content = lastCopied.text.join(\"\\n\");\n // iOS exposes the clipboard API, but seems to discard content inserted into it\n e.clipboardData.setData(\"Text\", content);\n if (e.clipboardData.getData(\"Text\") == content) {\n e.preventDefault();\n return\n }\n }\n // Old-fashioned briefly-focus-a-textarea hack\n var kludge = hiddenTextarea(), te = kludge.firstChild;\n disableBrowserMagic(te);\n cm.display.lineSpace.insertBefore(kludge, cm.display.lineSpace.firstChild);\n te.value = lastCopied.text.join(\"\\n\");\n var hadFocus = activeElt(rootNode(div));\n selectInput(te);\n setTimeout(function () {\n cm.display.lineSpace.removeChild(kludge);\n hadFocus.focus();\n if (hadFocus == div) { input.showPrimarySelection(); }\n }, 50);\n }\n on(div, \"copy\", onCopyCut);\n on(div, \"cut\", onCopyCut);\n };\n\n ContentEditableInput.prototype.screenReaderLabelChanged = function (label) {\n // Label for screenreaders, accessibility\n if(label) {\n this.div.setAttribute('aria-label', label);\n } else {\n this.div.removeAttribute('aria-label');\n }\n };\n\n ContentEditableInput.prototype.prepareSelection = function () {\n var result = prepareSelection(this.cm, false);\n result.focus = activeElt(rootNode(this.div)) == this.div;\n return result\n };\n\n ContentEditableInput.prototype.showSelection = function (info, takeFocus) {\n if (!info || !this.cm.display.view.length) { return }\n if (info.focus || takeFocus) { this.showPrimarySelection(); }\n this.showMultipleSelections(info);\n };\n\n ContentEditableInput.prototype.getSelection = function () {\n return this.cm.display.wrapper.ownerDocument.getSelection()\n };\n\n ContentEditableInput.prototype.showPrimarySelection = function () {\n var sel = this.getSelection(), cm = this.cm, prim = cm.doc.sel.primary();\n var from = prim.from(), to = prim.to();\n\n if (cm.display.viewTo == cm.display.viewFrom || from.line >= cm.display.viewTo || to.line < cm.display.viewFrom) {\n sel.removeAllRanges();\n return\n }\n\n var curAnchor = domToPos(cm, sel.anchorNode, sel.anchorOffset);\n var curFocus = domToPos(cm, sel.focusNode, sel.focusOffset);\n if (curAnchor && !curAnchor.bad && curFocus && !curFocus.bad &&\n cmp(minPos(curAnchor, curFocus), from) == 0 &&\n cmp(maxPos(curAnchor, curFocus), to) == 0)\n { return }\n\n var view = cm.display.view;\n var start = (from.line >= cm.display.viewFrom && posToDOM(cm, from)) ||\n {node: view[0].measure.map[2], offset: 0};\n var end = to.line < cm.display.viewTo && posToDOM(cm, to);\n if (!end) {\n var measure = view[view.length - 1].measure;\n var map = measure.maps ? measure.maps[measure.maps.length - 1] : measure.map;\n end = {node: map[map.length - 1], offset: map[map.length - 2] - map[map.length - 3]};\n }\n\n if (!start || !end) {\n sel.removeAllRanges();\n return\n }\n\n var old = sel.rangeCount && sel.getRangeAt(0), rng;\n try { rng = range(start.node, start.offset, end.offset, end.node); }\n catch(e) {} // Our model of the DOM might be outdated, in which case the range we try to set can be impossible\n if (rng) {\n if (!gecko && cm.state.focused) {\n sel.collapse(start.node, start.offset);\n if (!rng.collapsed) {\n sel.removeAllRanges();\n sel.addRange(rng);\n }\n } else {\n sel.removeAllRanges();\n sel.addRange(rng);\n }\n if (old && sel.anchorNode == null) { sel.addRange(old); }\n else if (gecko) { this.startGracePeriod(); }\n }\n this.rememberSelection();\n };\n\n ContentEditableInput.prototype.startGracePeriod = function () {\n var this$1 = this;\n\n clearTimeout(this.gracePeriod);\n this.gracePeriod = setTimeout(function () {\n this$1.gracePeriod = false;\n if (this$1.selectionChanged())\n { this$1.cm.operation(function () { return this$1.cm.curOp.selectionChanged = true; }); }\n }, 20);\n };\n\n ContentEditableInput.prototype.showMultipleSelections = function (info) {\n removeChildrenAndAdd(this.cm.display.cursorDiv, info.cursors);\n removeChildrenAndAdd(this.cm.display.selectionDiv, info.selection);\n };\n\n ContentEditableInput.prototype.rememberSelection = function () {\n var sel = this.getSelection();\n this.lastAnchorNode = sel.anchorNode; this.lastAnchorOffset = sel.anchorOffset;\n this.lastFocusNode = sel.focusNode; this.lastFocusOffset = sel.focusOffset;\n };\n\n ContentEditableInput.prototype.selectionInEditor = function () {\n var sel = this.getSelection();\n if (!sel.rangeCount) { return false }\n var node = sel.getRangeAt(0).commonAncestorContainer;\n return contains(this.div, node)\n };\n\n ContentEditableInput.prototype.focus = function () {\n if (this.cm.options.readOnly != \"nocursor\") {\n if (!this.selectionInEditor() || activeElt(rootNode(this.div)) != this.div)\n { this.showSelection(this.prepareSelection(), true); }\n this.div.focus();\n }\n };\n ContentEditableInput.prototype.blur = function () { this.div.blur(); };\n ContentEditableInput.prototype.getField = function () { return this.div };\n\n ContentEditableInput.prototype.supportsTouch = function () { return true };\n\n ContentEditableInput.prototype.receivedFocus = function () {\n var this$1 = this;\n\n var input = this;\n if (this.selectionInEditor())\n { setTimeout(function () { return this$1.pollSelection(); }, 20); }\n else\n { runInOp(this.cm, function () { return input.cm.curOp.selectionChanged = true; }); }\n\n function poll() {\n if (input.cm.state.focused) {\n input.pollSelection();\n input.polling.set(input.cm.options.pollInterval, poll);\n }\n }\n this.polling.set(this.cm.options.pollInterval, poll);\n };\n\n ContentEditableInput.prototype.selectionChanged = function () {\n var sel = this.getSelection();\n return sel.anchorNode != this.lastAnchorNode || sel.anchorOffset != this.lastAnchorOffset ||\n sel.focusNode != this.lastFocusNode || sel.focusOffset != this.lastFocusOffset\n };\n\n ContentEditableInput.prototype.pollSelection = function () {\n if (this.readDOMTimeout != null || this.gracePeriod || !this.selectionChanged()) { return }\n var sel = this.getSelection(), cm = this.cm;\n // On Android Chrome (version 56, at least), backspacing into an\n // uneditable block element will put the cursor in that element,\n // and then, because it's not editable, hide the virtual keyboard.\n // Because Android doesn't allow us to actually detect backspace\n // presses in a sane way, this code checks for when that happens\n // and simulates a backspace press in this case.\n if (android && chrome && this.cm.display.gutterSpecs.length && isInGutter(sel.anchorNode)) {\n this.cm.triggerOnKeyDown({type: \"keydown\", keyCode: 8, preventDefault: Math.abs});\n this.blur();\n this.focus();\n return\n }\n if (this.composing) { return }\n this.rememberSelection();\n var anchor = domToPos(cm, sel.anchorNode, sel.anchorOffset);\n var head = domToPos(cm, sel.focusNode, sel.focusOffset);\n if (anchor && head) { runInOp(cm, function () {\n setSelection(cm.doc, simpleSelection(anchor, head), sel_dontScroll);\n if (anchor.bad || head.bad) { cm.curOp.selectionChanged = true; }\n }); }\n };\n\n ContentEditableInput.prototype.pollContent = function () {\n if (this.readDOMTimeout != null) {\n clearTimeout(this.readDOMTimeout);\n this.readDOMTimeout = null;\n }\n\n var cm = this.cm, display = cm.display, sel = cm.doc.sel.primary();\n var from = sel.from(), to = sel.to();\n if (from.ch == 0 && from.line > cm.firstLine())\n { from = Pos(from.line - 1, getLine(cm.doc, from.line - 1).length); }\n if (to.ch == getLine(cm.doc, to.line).text.length && to.line < cm.lastLine())\n { to = Pos(to.line + 1, 0); }\n if (from.line < display.viewFrom || to.line > display.viewTo - 1) { return false }\n\n var fromIndex, fromLine, fromNode;\n if (from.line == display.viewFrom || (fromIndex = findViewIndex(cm, from.line)) == 0) {\n fromLine = lineNo(display.view[0].line);\n fromNode = display.view[0].node;\n } else {\n fromLine = lineNo(display.view[fromIndex].line);\n fromNode = display.view[fromIndex - 1].node.nextSibling;\n }\n var toIndex = findViewIndex(cm, to.line);\n var toLine, toNode;\n if (toIndex == display.view.length - 1) {\n toLine = display.viewTo - 1;\n toNode = display.lineDiv.lastChild;\n } else {\n toLine = lineNo(display.view[toIndex + 1].line) - 1;\n toNode = display.view[toIndex + 1].node.previousSibling;\n }\n\n if (!fromNode) { return false }\n var newText = cm.doc.splitLines(domTextBetween(cm, fromNode, toNode, fromLine, toLine));\n var oldText = getBetween(cm.doc, Pos(fromLine, 0), Pos(toLine, getLine(cm.doc, toLine).text.length));\n while (newText.length > 1 && oldText.length > 1) {\n if (lst(newText) == lst(oldText)) { newText.pop(); oldText.pop(); toLine--; }\n else if (newText[0] == oldText[0]) { newText.shift(); oldText.shift(); fromLine++; }\n else { break }\n }\n\n var cutFront = 0, cutEnd = 0;\n var newTop = newText[0], oldTop = oldText[0], maxCutFront = Math.min(newTop.length, oldTop.length);\n while (cutFront < maxCutFront && newTop.charCodeAt(cutFront) == oldTop.charCodeAt(cutFront))\n { ++cutFront; }\n var newBot = lst(newText), oldBot = lst(oldText);\n var maxCutEnd = Math.min(newBot.length - (newText.length == 1 ? cutFront : 0),\n oldBot.length - (oldText.length == 1 ? cutFront : 0));\n while (cutEnd < maxCutEnd &&\n newBot.charCodeAt(newBot.length - cutEnd - 1) == oldBot.charCodeAt(oldBot.length - cutEnd - 1))\n { ++cutEnd; }\n // Try to move start of change to start of selection if ambiguous\n if (newText.length == 1 && oldText.length == 1 && fromLine == from.line) {\n while (cutFront && cutFront > from.ch &&\n newBot.charCodeAt(newBot.length - cutEnd - 1) == oldBot.charCodeAt(oldBot.length - cutEnd - 1)) {\n cutFront--;\n cutEnd++;\n }\n }\n\n newText[newText.length - 1] = newBot.slice(0, newBot.length - cutEnd).replace(/^\\u200b+/, \"\");\n newText[0] = newText[0].slice(cutFront).replace(/\\u200b+$/, \"\");\n\n var chFrom = Pos(fromLine, cutFront);\n var chTo = Pos(toLine, oldText.length ? lst(oldText).length - cutEnd : 0);\n if (newText.length > 1 || newText[0] || cmp(chFrom, chTo)) {\n replaceRange(cm.doc, newText, chFrom, chTo, \"+input\");\n return true\n }\n };\n\n ContentEditableInput.prototype.ensurePolled = function () {\n this.forceCompositionEnd();\n };\n ContentEditableInput.prototype.reset = function () {\n this.forceCompositionEnd();\n };\n ContentEditableInput.prototype.forceCompositionEnd = function () {\n if (!this.composing) { return }\n clearTimeout(this.readDOMTimeout);\n this.composing = null;\n this.updateFromDOM();\n this.div.blur();\n this.div.focus();\n };\n ContentEditableInput.prototype.readFromDOMSoon = function () {\n var this$1 = this;\n\n if (this.readDOMTimeout != null) { return }\n this.readDOMTimeout = setTimeout(function () {\n this$1.readDOMTimeout = null;\n if (this$1.composing) {\n if (this$1.composing.done) { this$1.composing = null; }\n else { return }\n }\n this$1.updateFromDOM();\n }, 80);\n };\n\n ContentEditableInput.prototype.updateFromDOM = function () {\n var this$1 = this;\n\n if (this.cm.isReadOnly() || !this.pollContent())\n { runInOp(this.cm, function () { return regChange(this$1.cm); }); }\n };\n\n ContentEditableInput.prototype.setUneditable = function (node) {\n node.contentEditable = \"false\";\n };\n\n ContentEditableInput.prototype.onKeyPress = function (e) {\n if (e.charCode == 0 || this.composing) { return }\n e.preventDefault();\n if (!this.cm.isReadOnly())\n { operation(this.cm, applyTextInput)(this.cm, String.fromCharCode(e.charCode == null ? e.keyCode : e.charCode), 0); }\n };\n\n ContentEditableInput.prototype.readOnlyChanged = function (val) {\n this.div.contentEditable = String(val != \"nocursor\");\n };\n\n ContentEditableInput.prototype.onContextMenu = function () {};\n ContentEditableInput.prototype.resetPosition = function () {};\n\n ContentEditableInput.prototype.needsContentAttribute = true;\n\n function posToDOM(cm, pos) {\n var view = findViewForLine(cm, pos.line);\n if (!view || view.hidden) { return null }\n var line = getLine(cm.doc, pos.line);\n var info = mapFromLineView(view, line, pos.line);\n\n var order = getOrder(line, cm.doc.direction), side = \"left\";\n if (order) {\n var partPos = getBidiPartAt(order, pos.ch);\n side = partPos % 2 ? \"right\" : \"left\";\n }\n var result = nodeAndOffsetInLineMap(info.map, pos.ch, side);\n result.offset = result.collapse == \"right\" ? result.end : result.start;\n return result\n }\n\n function isInGutter(node) {\n for (var scan = node; scan; scan = scan.parentNode)\n { if (/CodeMirror-gutter-wrapper/.test(scan.className)) { return true } }\n return false\n }\n\n function badPos(pos, bad) { if (bad) { pos.bad = true; } return pos }\n\n function domTextBetween(cm, from, to, fromLine, toLine) {\n var text = \"\", closing = false, lineSep = cm.doc.lineSeparator(), extraLinebreak = false;\n function recognizeMarker(id) { return function (marker) { return marker.id == id; } }\n function close() {\n if (closing) {\n text += lineSep;\n if (extraLinebreak) { text += lineSep; }\n closing = extraLinebreak = false;\n }\n }\n function addText(str) {\n if (str) {\n close();\n text += str;\n }\n }\n function walk(node) {\n if (node.nodeType == 1) {\n var cmText = node.getAttribute(\"cm-text\");\n if (cmText) {\n addText(cmText);\n return\n }\n var markerID = node.getAttribute(\"cm-marker\"), range;\n if (markerID) {\n var found = cm.findMarks(Pos(fromLine, 0), Pos(toLine + 1, 0), recognizeMarker(+markerID));\n if (found.length && (range = found[0].find(0)))\n { addText(getBetween(cm.doc, range.from, range.to).join(lineSep)); }\n return\n }\n if (node.getAttribute(\"contenteditable\") == \"false\") { return }\n var isBlock = /^(pre|div|p|li|table|br)$/i.test(node.nodeName);\n if (!/^br$/i.test(node.nodeName) && node.textContent.length == 0) { return }\n\n if (isBlock) { close(); }\n for (var i = 0; i < node.childNodes.length; i++)\n { walk(node.childNodes[i]); }\n\n if (/^(pre|p)$/i.test(node.nodeName)) { extraLinebreak = true; }\n if (isBlock) { closing = true; }\n } else if (node.nodeType == 3) {\n addText(node.nodeValue.replace(/\\u200b/g, \"\").replace(/\\u00a0/g, \" \"));\n }\n }\n for (;;) {\n walk(from);\n if (from == to) { break }\n from = from.nextSibling;\n extraLinebreak = false;\n }\n return text\n }\n\n function domToPos(cm, node, offset) {\n var lineNode;\n if (node == cm.display.lineDiv) {\n lineNode = cm.display.lineDiv.childNodes[offset];\n if (!lineNode) { return badPos(cm.clipPos(Pos(cm.display.viewTo - 1)), true) }\n node = null; offset = 0;\n } else {\n for (lineNode = node;; lineNode = lineNode.parentNode) {\n if (!lineNode || lineNode == cm.display.lineDiv) { return null }\n if (lineNode.parentNode && lineNode.parentNode == cm.display.lineDiv) { break }\n }\n }\n for (var i = 0; i < cm.display.view.length; i++) {\n var lineView = cm.display.view[i];\n if (lineView.node == lineNode)\n { return locateNodeInLineView(lineView, node, offset) }\n }\n }\n\n function locateNodeInLineView(lineView, node, offset) {\n var wrapper = lineView.text.firstChild, bad = false;\n if (!node || !contains(wrapper, node)) { return badPos(Pos(lineNo(lineView.line), 0), true) }\n if (node == wrapper) {\n bad = true;\n node = wrapper.childNodes[offset];\n offset = 0;\n if (!node) {\n var line = lineView.rest ? lst(lineView.rest) : lineView.line;\n return badPos(Pos(lineNo(line), line.text.length), bad)\n }\n }\n\n var textNode = node.nodeType == 3 ? node : null, topNode = node;\n if (!textNode && node.childNodes.length == 1 && node.firstChild.nodeType == 3) {\n textNode = node.firstChild;\n if (offset) { offset = textNode.nodeValue.length; }\n }\n while (topNode.parentNode != wrapper) { topNode = topNode.parentNode; }\n var measure = lineView.measure, maps = measure.maps;\n\n function find(textNode, topNode, offset) {\n for (var i = -1; i < (maps ? maps.length : 0); i++) {\n var map = i < 0 ? measure.map : maps[i];\n for (var j = 0; j < map.length; j += 3) {\n var curNode = map[j + 2];\n if (curNode == textNode || curNode == topNode) {\n var line = lineNo(i < 0 ? lineView.line : lineView.rest[i]);\n var ch = map[j] + offset;\n if (offset < 0 || curNode != textNode) { ch = map[j + (offset ? 1 : 0)]; }\n return Pos(line, ch)\n }\n }\n }\n }\n var found = find(textNode, topNode, offset);\n if (found) { return badPos(found, bad) }\n\n // FIXME this is all really shaky. might handle the few cases it needs to handle, but likely to cause problems\n for (var after = topNode.nextSibling, dist = textNode ? textNode.nodeValue.length - offset : 0; after; after = after.nextSibling) {\n found = find(after, after.firstChild, 0);\n if (found)\n { return badPos(Pos(found.line, found.ch - dist), bad) }\n else\n { dist += after.textContent.length; }\n }\n for (var before = topNode.previousSibling, dist$1 = offset; before; before = before.previousSibling) {\n found = find(before, before.firstChild, -1);\n if (found)\n { return badPos(Pos(found.line, found.ch + dist$1), bad) }\n else\n { dist$1 += before.textContent.length; }\n }\n }\n\n // TEXTAREA INPUT STYLE\n\n var TextareaInput = function(cm) {\n this.cm = cm;\n // See input.poll and input.reset\n this.prevInput = \"\";\n\n // Flag that indicates whether we expect input to appear real soon\n // now (after some event like 'keypress' or 'input') and are\n // polling intensively.\n this.pollingFast = false;\n // Self-resetting timeout for the poller\n this.polling = new Delayed();\n // Used to work around IE issue with selection being forgotten when focus moves away from textarea\n this.hasSelection = false;\n this.composing = null;\n this.resetting = false;\n };\n\n TextareaInput.prototype.init = function (display) {\n var this$1 = this;\n\n var input = this, cm = this.cm;\n this.createField(display);\n var te = this.textarea;\n\n display.wrapper.insertBefore(this.wrapper, display.wrapper.firstChild);\n\n // Needed to hide big blue blinking cursor on Mobile Safari (doesn't seem to work in iOS 8 anymore)\n if (ios) { te.style.width = \"0px\"; }\n\n on(te, \"input\", function () {\n if (ie && ie_version >= 9 && this$1.hasSelection) { this$1.hasSelection = null; }\n input.poll();\n });\n\n on(te, \"paste\", function (e) {\n if (signalDOMEvent(cm, e) || handlePaste(e, cm)) { return }\n\n cm.state.pasteIncoming = +new Date;\n input.fastPoll();\n });\n\n function prepareCopyCut(e) {\n if (signalDOMEvent(cm, e)) { return }\n if (cm.somethingSelected()) {\n setLastCopied({lineWise: false, text: cm.getSelections()});\n } else if (!cm.options.lineWiseCopyCut) {\n return\n } else {\n var ranges = copyableRanges(cm);\n setLastCopied({lineWise: true, text: ranges.text});\n if (e.type == \"cut\") {\n cm.setSelections(ranges.ranges, null, sel_dontScroll);\n } else {\n input.prevInput = \"\";\n te.value = ranges.text.join(\"\\n\");\n selectInput(te);\n }\n }\n if (e.type == \"cut\") { cm.state.cutIncoming = +new Date; }\n }\n on(te, \"cut\", prepareCopyCut);\n on(te, \"copy\", prepareCopyCut);\n\n on(display.scroller, \"paste\", function (e) {\n if (eventInWidget(display, e) || signalDOMEvent(cm, e)) { return }\n if (!te.dispatchEvent) {\n cm.state.pasteIncoming = +new Date;\n input.focus();\n return\n }\n\n // Pass the `paste` event to the textarea so it's handled by its event listener.\n var event = new Event(\"paste\");\n event.clipboardData = e.clipboardData;\n te.dispatchEvent(event);\n });\n\n // Prevent normal selection in the editor (we handle our own)\n on(display.lineSpace, \"selectstart\", function (e) {\n if (!eventInWidget(display, e)) { e_preventDefault(e); }\n });\n\n on(te, \"compositionstart\", function () {\n var start = cm.getCursor(\"from\");\n if (input.composing) { input.composing.range.clear(); }\n input.composing = {\n start: start,\n range: cm.markText(start, cm.getCursor(\"to\"), {className: \"CodeMirror-composing\"})\n };\n });\n on(te, \"compositionend\", function () {\n if (input.composing) {\n input.poll();\n input.composing.range.clear();\n input.composing = null;\n }\n });\n };\n\n TextareaInput.prototype.createField = function (_display) {\n // Wraps and hides input textarea\n this.wrapper = hiddenTextarea();\n // The semihidden textarea that is focused when the editor is\n // focused, and receives input.\n this.textarea = this.wrapper.firstChild;\n var opts = this.cm.options;\n disableBrowserMagic(this.textarea, opts.spellcheck, opts.autocorrect, opts.autocapitalize);\n };\n\n TextareaInput.prototype.screenReaderLabelChanged = function (label) {\n // Label for screenreaders, accessibility\n if(label) {\n this.textarea.setAttribute('aria-label', label);\n } else {\n this.textarea.removeAttribute('aria-label');\n }\n };\n\n TextareaInput.prototype.prepareSelection = function () {\n // Redraw the selection and/or cursor\n var cm = this.cm, display = cm.display, doc = cm.doc;\n var result = prepareSelection(cm);\n\n // Move the hidden textarea near the cursor to prevent scrolling artifacts\n if (cm.options.moveInputWithCursor) {\n var headPos = cursorCoords(cm, doc.sel.primary().head, \"div\");\n var wrapOff = display.wrapper.getBoundingClientRect(), lineOff = display.lineDiv.getBoundingClientRect();\n result.teTop = Math.max(0, Math.min(display.wrapper.clientHeight - 10,\n headPos.top + lineOff.top - wrapOff.top));\n result.teLeft = Math.max(0, Math.min(display.wrapper.clientWidth - 10,\n headPos.left + lineOff.left - wrapOff.left));\n }\n\n return result\n };\n\n TextareaInput.prototype.showSelection = function (drawn) {\n var cm = this.cm, display = cm.display;\n removeChildrenAndAdd(display.cursorDiv, drawn.cursors);\n removeChildrenAndAdd(display.selectionDiv, drawn.selection);\n if (drawn.teTop != null) {\n this.wrapper.style.top = drawn.teTop + \"px\";\n this.wrapper.style.left = drawn.teLeft + \"px\";\n }\n };\n\n // Reset the input to correspond to the selection (or to be empty,\n // when not typing and nothing is selected)\n TextareaInput.prototype.reset = function (typing) {\n if (this.contextMenuPending || this.composing && typing) { return }\n var cm = this.cm;\n this.resetting = true;\n if (cm.somethingSelected()) {\n this.prevInput = \"\";\n var content = cm.getSelection();\n this.textarea.value = content;\n if (cm.state.focused) { selectInput(this.textarea); }\n if (ie && ie_version >= 9) { this.hasSelection = content; }\n } else if (!typing) {\n this.prevInput = this.textarea.value = \"\";\n if (ie && ie_version >= 9) { this.hasSelection = null; }\n }\n this.resetting = false;\n };\n\n TextareaInput.prototype.getField = function () { return this.textarea };\n\n TextareaInput.prototype.supportsTouch = function () { return false };\n\n TextareaInput.prototype.focus = function () {\n if (this.cm.options.readOnly != \"nocursor\" && (!mobile || activeElt(rootNode(this.textarea)) != this.textarea)) {\n try { this.textarea.focus(); }\n catch (e) {} // IE8 will throw if the textarea is display: none or not in DOM\n }\n };\n\n TextareaInput.prototype.blur = function () { this.textarea.blur(); };\n\n TextareaInput.prototype.resetPosition = function () {\n this.wrapper.style.top = this.wrapper.style.left = 0;\n };\n\n TextareaInput.prototype.receivedFocus = function () { this.slowPoll(); };\n\n // Poll for input changes, using the normal rate of polling. This\n // runs as long as the editor is focused.\n TextareaInput.prototype.slowPoll = function () {\n var this$1 = this;\n\n if (this.pollingFast) { return }\n this.polling.set(this.cm.options.pollInterval, function () {\n this$1.poll();\n if (this$1.cm.state.focused) { this$1.slowPoll(); }\n });\n };\n\n // When an event has just come in that is likely to add or change\n // something in the input textarea, we poll faster, to ensure that\n // the change appears on the screen quickly.\n TextareaInput.prototype.fastPoll = function () {\n var missed = false, input = this;\n input.pollingFast = true;\n function p() {\n var changed = input.poll();\n if (!changed && !missed) {missed = true; input.polling.set(60, p);}\n else {input.pollingFast = false; input.slowPoll();}\n }\n input.polling.set(20, p);\n };\n\n // Read input from the textarea, and update the document to match.\n // When something is selected, it is present in the textarea, and\n // selected (unless it is huge, in which case a placeholder is\n // used). When nothing is selected, the cursor sits after previously\n // seen text (can be empty), which is stored in prevInput (we must\n // not reset the textarea when typing, because that breaks IME).\n TextareaInput.prototype.poll = function () {\n var this$1 = this;\n\n var cm = this.cm, input = this.textarea, prevInput = this.prevInput;\n // Since this is called a *lot*, try to bail out as cheaply as\n // possible when it is clear that nothing happened. hasSelection\n // will be the case when there is a lot of text in the textarea,\n // in which case reading its value would be expensive.\n if (this.contextMenuPending || this.resetting || !cm.state.focused ||\n (hasSelection(input) && !prevInput && !this.composing) ||\n cm.isReadOnly() || cm.options.disableInput || cm.state.keySeq)\n { return false }\n\n var text = input.value;\n // If nothing changed, bail.\n if (text == prevInput && !cm.somethingSelected()) { return false }\n // Work around nonsensical selection resetting in IE9/10, and\n // inexplicable appearance of private area unicode characters on\n // some key combos in Mac (#2689).\n if (ie && ie_version >= 9 && this.hasSelection === text ||\n mac && /[\\uf700-\\uf7ff]/.test(text)) {\n cm.display.input.reset();\n return false\n }\n\n if (cm.doc.sel == cm.display.selForContextMenu) {\n var first = text.charCodeAt(0);\n if (first == 0x200b && !prevInput) { prevInput = \"\\u200b\"; }\n if (first == 0x21da) { this.reset(); return this.cm.execCommand(\"undo\") }\n }\n // Find the part of the input that is actually new\n var same = 0, l = Math.min(prevInput.length, text.length);\n while (same < l && prevInput.charCodeAt(same) == text.charCodeAt(same)) { ++same; }\n\n runInOp(cm, function () {\n applyTextInput(cm, text.slice(same), prevInput.length - same,\n null, this$1.composing ? \"*compose\" : null);\n\n // Don't leave long text in the textarea, since it makes further polling slow\n if (text.length > 1000 || text.indexOf(\"\\n\") > -1) { input.value = this$1.prevInput = \"\"; }\n else { this$1.prevInput = text; }\n\n if (this$1.composing) {\n this$1.composing.range.clear();\n this$1.composing.range = cm.markText(this$1.composing.start, cm.getCursor(\"to\"),\n {className: \"CodeMirror-composing\"});\n }\n });\n return true\n };\n\n TextareaInput.prototype.ensurePolled = function () {\n if (this.pollingFast && this.poll()) { this.pollingFast = false; }\n };\n\n TextareaInput.prototype.onKeyPress = function () {\n if (ie && ie_version >= 9) { this.hasSelection = null; }\n this.fastPoll();\n };\n\n TextareaInput.prototype.onContextMenu = function (e) {\n var input = this, cm = input.cm, display = cm.display, te = input.textarea;\n if (input.contextMenuPending) { input.contextMenuPending(); }\n var pos = posFromMouse(cm, e), scrollPos = display.scroller.scrollTop;\n if (!pos || presto) { return } // Opera is difficult.\n\n // Reset the current text selection only if the click is done outside of the selection\n // and 'resetSelectionOnContextMenu' option is true.\n var reset = cm.options.resetSelectionOnContextMenu;\n if (reset && cm.doc.sel.contains(pos) == -1)\n { operation(cm, setSelection)(cm.doc, simpleSelection(pos), sel_dontScroll); }\n\n var oldCSS = te.style.cssText, oldWrapperCSS = input.wrapper.style.cssText;\n var wrapperBox = input.wrapper.offsetParent.getBoundingClientRect();\n input.wrapper.style.cssText = \"position: static\";\n te.style.cssText = \"position: absolute; width: 30px; height: 30px;\\n top: \" + (e.clientY - wrapperBox.top - 5) + \"px; left: \" + (e.clientX - wrapperBox.left - 5) + \"px;\\n z-index: 1000; background: \" + (ie ? \"rgba(255, 255, 255, .05)\" : \"transparent\") + \";\\n outline: none; border-width: 0; outline: none; overflow: hidden; opacity: .05; filter: alpha(opacity=5);\";\n var oldScrollY;\n if (webkit) { oldScrollY = te.ownerDocument.defaultView.scrollY; } // Work around Chrome issue (#2712)\n display.input.focus();\n if (webkit) { te.ownerDocument.defaultView.scrollTo(null, oldScrollY); }\n display.input.reset();\n // Adds \"Select all\" to context menu in FF\n if (!cm.somethingSelected()) { te.value = input.prevInput = \" \"; }\n input.contextMenuPending = rehide;\n display.selForContextMenu = cm.doc.sel;\n clearTimeout(display.detectingSelectAll);\n\n // Select-all will be greyed out if there's nothing to select, so\n // this adds a zero-width space so that we can later check whether\n // it got selected.\n function prepareSelectAllHack() {\n if (te.selectionStart != null) {\n var selected = cm.somethingSelected();\n var extval = \"\\u200b\" + (selected ? te.value : \"\");\n te.value = \"\\u21da\"; // Used to catch context-menu undo\n te.value = extval;\n input.prevInput = selected ? \"\" : \"\\u200b\";\n te.selectionStart = 1; te.selectionEnd = extval.length;\n // Re-set this, in case some other handler touched the\n // selection in the meantime.\n display.selForContextMenu = cm.doc.sel;\n }\n }\n function rehide() {\n if (input.contextMenuPending != rehide) { return }\n input.contextMenuPending = false;\n input.wrapper.style.cssText = oldWrapperCSS;\n te.style.cssText = oldCSS;\n if (ie && ie_version < 9) { display.scrollbars.setScrollTop(display.scroller.scrollTop = scrollPos); }\n\n // Try to detect the user choosing select-all\n if (te.selectionStart != null) {\n if (!ie || (ie && ie_version < 9)) { prepareSelectAllHack(); }\n var i = 0, poll = function () {\n if (display.selForContextMenu == cm.doc.sel && te.selectionStart == 0 &&\n te.selectionEnd > 0 && input.prevInput == \"\\u200b\") {\n operation(cm, selectAll)(cm);\n } else if (i++ < 10) {\n display.detectingSelectAll = setTimeout(poll, 500);\n } else {\n display.selForContextMenu = null;\n display.input.reset();\n }\n };\n display.detectingSelectAll = setTimeout(poll, 200);\n }\n }\n\n if (ie && ie_version >= 9) { prepareSelectAllHack(); }\n if (captureRightClick) {\n e_stop(e);\n var mouseup = function () {\n off(window, \"mouseup\", mouseup);\n setTimeout(rehide, 20);\n };\n on(window, \"mouseup\", mouseup);\n } else {\n setTimeout(rehide, 50);\n }\n };\n\n TextareaInput.prototype.readOnlyChanged = function (val) {\n if (!val) { this.reset(); }\n this.textarea.disabled = val == \"nocursor\";\n this.textarea.readOnly = !!val;\n };\n\n TextareaInput.prototype.setUneditable = function () {};\n\n TextareaInput.prototype.needsContentAttribute = false;\n\n function fromTextArea(textarea, options) {\n options = options ? copyObj(options) : {};\n options.value = textarea.value;\n if (!options.tabindex && textarea.tabIndex)\n { options.tabindex = textarea.tabIndex; }\n if (!options.placeholder && textarea.placeholder)\n { options.placeholder = textarea.placeholder; }\n // Set autofocus to true if this textarea is focused, or if it has\n // autofocus and no other element is focused.\n if (options.autofocus == null) {\n var hasFocus = activeElt(rootNode(textarea));\n options.autofocus = hasFocus == textarea ||\n textarea.getAttribute(\"autofocus\") != null && hasFocus == document.body;\n }\n\n function save() {textarea.value = cm.getValue();}\n\n var realSubmit;\n if (textarea.form) {\n on(textarea.form, \"submit\", save);\n // Deplorable hack to make the submit method do the right thing.\n if (!options.leaveSubmitMethodAlone) {\n var form = textarea.form;\n realSubmit = form.submit;\n try {\n var wrappedSubmit = form.submit = function () {\n save();\n form.submit = realSubmit;\n form.submit();\n form.submit = wrappedSubmit;\n };\n } catch(e) {}\n }\n }\n\n options.finishInit = function (cm) {\n cm.save = save;\n cm.getTextArea = function () { return textarea; };\n cm.toTextArea = function () {\n cm.toTextArea = isNaN; // Prevent this from being ran twice\n save();\n textarea.parentNode.removeChild(cm.getWrapperElement());\n textarea.style.display = \"\";\n if (textarea.form) {\n off(textarea.form, \"submit\", save);\n if (!options.leaveSubmitMethodAlone && typeof textarea.form.submit == \"function\")\n { textarea.form.submit = realSubmit; }\n }\n };\n };\n\n textarea.style.display = \"none\";\n var cm = CodeMirror(function (node) { return textarea.parentNode.insertBefore(node, textarea.nextSibling); },\n options);\n return cm\n }\n\n function addLegacyProps(CodeMirror) {\n CodeMirror.off = off;\n CodeMirror.on = on;\n CodeMirror.wheelEventPixels = wheelEventPixels;\n CodeMirror.Doc = Doc;\n CodeMirror.splitLines = splitLinesAuto;\n CodeMirror.countColumn = countColumn;\n CodeMirror.findColumn = findColumn;\n CodeMirror.isWordChar = isWordCharBasic;\n CodeMirror.Pass = Pass;\n CodeMirror.signal = signal;\n CodeMirror.Line = Line;\n CodeMirror.changeEnd = changeEnd;\n CodeMirror.scrollbarModel = scrollbarModel;\n CodeMirror.Pos = Pos;\n CodeMirror.cmpPos = cmp;\n CodeMirror.modes = modes;\n CodeMirror.mimeModes = mimeModes;\n CodeMirror.resolveMode = resolveMode;\n CodeMirror.getMode = getMode;\n CodeMirror.modeExtensions = modeExtensions;\n CodeMirror.extendMode = extendMode;\n CodeMirror.copyState = copyState;\n CodeMirror.startState = startState;\n CodeMirror.innerMode = innerMode;\n CodeMirror.commands = commands;\n CodeMirror.keyMap = keyMap;\n CodeMirror.keyName = keyName;\n CodeMirror.isModifierKey = isModifierKey;\n CodeMirror.lookupKey = lookupKey;\n CodeMirror.normalizeKeyMap = normalizeKeyMap;\n CodeMirror.StringStream = StringStream;\n CodeMirror.SharedTextMarker = SharedTextMarker;\n CodeMirror.TextMarker = TextMarker;\n CodeMirror.LineWidget = LineWidget;\n CodeMirror.e_preventDefault = e_preventDefault;\n CodeMirror.e_stopPropagation = e_stopPropagation;\n CodeMirror.e_stop = e_stop;\n CodeMirror.addClass = addClass;\n CodeMirror.contains = contains;\n CodeMirror.rmClass = rmClass;\n CodeMirror.keyNames = keyNames;\n }\n\n // EDITOR CONSTRUCTOR\n\n defineOptions(CodeMirror);\n\n addEditorMethods(CodeMirror);\n\n // Set up methods on CodeMirror's prototype to redirect to the editor's document.\n var dontDelegate = \"iter insert remove copy getEditor constructor\".split(\" \");\n for (var prop in Doc.prototype) { if (Doc.prototype.hasOwnProperty(prop) && indexOf(dontDelegate, prop) < 0)\n { CodeMirror.prototype[prop] = (function(method) {\n return function() {return method.apply(this.doc, arguments)}\n })(Doc.prototype[prop]); } }\n\n eventMixin(Doc);\n CodeMirror.inputStyles = {\"textarea\": TextareaInput, \"contenteditable\": ContentEditableInput};\n\n // Extra arguments are stored as the mode's dependencies, which is\n // used by (legacy) mechanisms like loadmode.js to automatically\n // load a mode. (Preferred mechanism is the require/define calls.)\n CodeMirror.defineMode = function(name/*, mode, \u2026*/) {\n if (!CodeMirror.defaults.mode && name != \"null\") { CodeMirror.defaults.mode = name; }\n defineMode.apply(this, arguments);\n };\n\n CodeMirror.defineMIME = defineMIME;\n\n // Minimal default mode.\n CodeMirror.defineMode(\"null\", function () { return ({token: function (stream) { return stream.skipToEnd(); }}); });\n CodeMirror.defineMIME(\"text/plain\", \"null\");\n\n // EXTENSIONS\n\n CodeMirror.defineExtension = function (name, func) {\n CodeMirror.prototype[name] = func;\n };\n CodeMirror.defineDocExtension = function (name, func) {\n Doc.prototype[name] = func;\n };\n\n CodeMirror.fromTextArea = fromTextArea;\n\n addLegacyProps(CodeMirror);\n\n CodeMirror.version = \"5.65.20\";\n\n return CodeMirror;\n\n})));\n", "// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/5/LICENSE\n\n(function(mod) {\n if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n mod(require(\"../../lib/codemirror\"));\n else if (typeof define == \"function\" && define.amd) // AMD\n define([\"../../lib/codemirror\"], mod);\n else // Plain browser env\n mod(CodeMirror);\n})(function(CodeMirror) {\n\"use strict\";\n\nCodeMirror.defineMode(\"css\", function(config, parserConfig) {\n var inline = parserConfig.inline\n if (!parserConfig.propertyKeywords) parserConfig = CodeMirror.resolveMode(\"text/css\");\n\n var indentUnit = config.indentUnit,\n tokenHooks = parserConfig.tokenHooks,\n documentTypes = parserConfig.documentTypes || {},\n mediaTypes = parserConfig.mediaTypes || {},\n mediaFeatures = parserConfig.mediaFeatures || {},\n mediaValueKeywords = parserConfig.mediaValueKeywords || {},\n propertyKeywords = parserConfig.propertyKeywords || {},\n nonStandardPropertyKeywords = parserConfig.nonStandardPropertyKeywords || {},\n fontProperties = parserConfig.fontProperties || {},\n counterDescriptors = parserConfig.counterDescriptors || {},\n colorKeywords = parserConfig.colorKeywords || {},\n valueKeywords = parserConfig.valueKeywords || {},\n allowNested = parserConfig.allowNested,\n lineComment = parserConfig.lineComment,\n supportsAtComponent = parserConfig.supportsAtComponent === true,\n highlightNonStandardPropertyKeywords = config.highlightNonStandardPropertyKeywords !== false;\n\n var type, override;\n function ret(style, tp) { type = tp; return style; }\n\n // Tokenizers\n\n function tokenBase(stream, state) {\n var ch = stream.next();\n if (tokenHooks[ch]) {\n var result = tokenHooks[ch](stream, state);\n if (result !== false) return result;\n }\n if (ch == \"@\") {\n stream.eatWhile(/[\\w\\\\\\-]/);\n return ret(\"def\", stream.current());\n } else if (ch == \"=\" || (ch == \"~\" || ch == \"|\") && stream.eat(\"=\")) {\n return ret(null, \"compare\");\n } else if (ch == \"\\\"\" || ch == \"'\") {\n state.tokenize = tokenString(ch);\n return state.tokenize(stream, state);\n } else if (ch == \"#\") {\n stream.eatWhile(/[\\w\\\\\\-]/);\n return ret(\"atom\", \"hash\");\n } else if (ch == \"!\") {\n stream.match(/^\\s*\\w*/);\n return ret(\"keyword\", \"important\");\n } else if (/\\d/.test(ch) || ch == \".\" && stream.eat(/\\d/)) {\n stream.eatWhile(/[\\w.%]/);\n return ret(\"number\", \"unit\");\n } else if (ch === \"-\") {\n if (/[\\d.]/.test(stream.peek())) {\n stream.eatWhile(/[\\w.%]/);\n return ret(\"number\", \"unit\");\n } else if (stream.match(/^-[\\w\\\\\\-]*/)) {\n stream.eatWhile(/[\\w\\\\\\-]/);\n if (stream.match(/^\\s*:/, false))\n return ret(\"variable-2\", \"variable-definition\");\n return ret(\"variable-2\", \"variable\");\n } else if (stream.match(/^\\w+-/)) {\n return ret(\"meta\", \"meta\");\n }\n } else if (/[,+>*\\/]/.test(ch)) {\n return ret(null, \"select-op\");\n } else if (ch == \".\" && stream.match(/^-?[_a-z][_a-z0-9-]*/i)) {\n return ret(\"qualifier\", \"qualifier\");\n } else if (/[:;{}\\[\\]\\(\\)]/.test(ch)) {\n return ret(null, ch);\n } else if (stream.match(/^[\\w-.]+(?=\\()/)) {\n if (/^(url(-prefix)?|domain|regexp)$/i.test(stream.current())) {\n state.tokenize = tokenParenthesized;\n }\n return ret(\"variable callee\", \"variable\");\n } else if (/[\\w\\\\\\-]/.test(ch)) {\n stream.eatWhile(/[\\w\\\\\\-]/);\n return ret(\"property\", \"word\");\n } else {\n return ret(null, null);\n }\n }\n\n function tokenString(quote) {\n return function(stream, state) {\n var escaped = false, ch;\n while ((ch = stream.next()) != null) {\n if (ch == quote && !escaped) {\n if (quote == \")\") stream.backUp(1);\n break;\n }\n escaped = !escaped && ch == \"\\\\\";\n }\n if (ch == quote || !escaped && quote != \")\") state.tokenize = null;\n return ret(\"string\", \"string\");\n };\n }\n\n function tokenParenthesized(stream, state) {\n stream.next(); // Must be '('\n if (!stream.match(/^\\s*[\\\"\\')]/, false))\n state.tokenize = tokenString(\")\");\n else\n state.tokenize = null;\n return ret(null, \"(\");\n }\n\n // Context management\n\n function Context(type, indent, prev) {\n this.type = type;\n this.indent = indent;\n this.prev = prev;\n }\n\n function pushContext(state, stream, type, indent) {\n state.context = new Context(type, stream.indentation() + (indent === false ? 0 : indentUnit), state.context);\n return type;\n }\n\n function popContext(state) {\n if (state.context.prev)\n state.context = state.context.prev;\n return state.context.type;\n }\n\n function pass(type, stream, state) {\n return states[state.context.type](type, stream, state);\n }\n function popAndPass(type, stream, state, n) {\n for (var i = n || 1; i > 0; i--)\n state.context = state.context.prev;\n return pass(type, stream, state);\n }\n\n // Parser\n\n function wordAsValue(stream) {\n var word = stream.current().toLowerCase();\n if (valueKeywords.hasOwnProperty(word))\n override = \"atom\";\n else if (colorKeywords.hasOwnProperty(word))\n override = \"keyword\";\n else\n override = \"variable\";\n }\n\n var states = {};\n\n states.top = function(type, stream, state) {\n if (type == \"{\") {\n return pushContext(state, stream, \"block\");\n } else if (type == \"}\" && state.context.prev) {\n return popContext(state);\n } else if (supportsAtComponent && /@component/i.test(type)) {\n return pushContext(state, stream, \"atComponentBlock\");\n } else if (/^@(-moz-)?document$/i.test(type)) {\n return pushContext(state, stream, \"documentTypes\");\n } else if (/^@(media|supports|(-moz-)?document|import)$/i.test(type)) {\n return pushContext(state, stream, \"atBlock\");\n } else if (/^@(font-face|counter-style)/i.test(type)) {\n state.stateArg = type;\n return \"restricted_atBlock_before\";\n } else if (/^@(-(moz|ms|o|webkit)-)?keyframes$/i.test(type)) {\n return \"keyframes\";\n } else if (type && type.charAt(0) == \"@\") {\n return pushContext(state, stream, \"at\");\n } else if (type == \"hash\") {\n override = \"builtin\";\n } else if (type == \"word\") {\n override = \"tag\";\n } else if (type == \"variable-definition\") {\n return \"maybeprop\";\n } else if (type == \"interpolation\") {\n return pushContext(state, stream, \"interpolation\");\n } else if (type == \":\") {\n return \"pseudo\";\n } else if (allowNested && type == \"(\") {\n return pushContext(state, stream, \"parens\");\n }\n return state.context.type;\n };\n\n states.block = function(type, stream, state) {\n if (type == \"word\") {\n var word = stream.current().toLowerCase();\n if (propertyKeywords.hasOwnProperty(word)) {\n override = \"property\";\n return \"maybeprop\";\n } else if (nonStandardPropertyKeywords.hasOwnProperty(word)) {\n override = highlightNonStandardPropertyKeywords ? \"string-2\" : \"property\";\n return \"maybeprop\";\n } else if (allowNested) {\n override = stream.match(/^\\s*:(?:\\s|$)/, false) ? \"property\" : \"tag\";\n return \"block\";\n } else {\n override += \" error\";\n return \"maybeprop\";\n }\n } else if (type == \"meta\") {\n return \"block\";\n } else if (!allowNested && (type == \"hash\" || type == \"qualifier\")) {\n override = \"error\";\n return \"block\";\n } else {\n return states.top(type, stream, state);\n }\n };\n\n states.maybeprop = function(type, stream, state) {\n if (type == \":\") return pushContext(state, stream, \"prop\");\n return pass(type, stream, state);\n };\n\n states.prop = function(type, stream, state) {\n if (type == \";\") return popContext(state);\n if (type == \"{\" && allowNested) return pushContext(state, stream, \"propBlock\");\n if (type == \"}\" || type == \"{\") return popAndPass(type, stream, state);\n if (type == \"(\") return pushContext(state, stream, \"parens\");\n\n if (type == \"hash\" && !/^#([0-9a-fA-F]{3,4}|[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$/.test(stream.current())) {\n override += \" error\";\n } else if (type == \"word\") {\n wordAsValue(stream);\n } else if (type == \"interpolation\") {\n return pushContext(state, stream, \"interpolation\");\n }\n return \"prop\";\n };\n\n states.propBlock = function(type, _stream, state) {\n if (type == \"}\") return popContext(state);\n if (type == \"word\") { override = \"property\"; return \"maybeprop\"; }\n return state.context.type;\n };\n\n states.parens = function(type, stream, state) {\n if (type == \"{\" || type == \"}\") return popAndPass(type, stream, state);\n if (type == \")\") return popContext(state);\n if (type == \"(\") return pushContext(state, stream, \"parens\");\n if (type == \"interpolation\") return pushContext(state, stream, \"interpolation\");\n if (type == \"word\") wordAsValue(stream);\n return \"parens\";\n };\n\n states.pseudo = function(type, stream, state) {\n if (type == \"meta\") return \"pseudo\";\n\n if (type == \"word\") {\n override = \"variable-3\";\n return state.context.type;\n }\n return pass(type, stream, state);\n };\n\n states.documentTypes = function(type, stream, state) {\n if (type == \"word\" && documentTypes.hasOwnProperty(stream.current())) {\n override = \"tag\";\n return state.context.type;\n } else {\n return states.atBlock(type, stream, state);\n }\n };\n\n states.atBlock = function(type, stream, state) {\n if (type == \"(\") return pushContext(state, stream, \"atBlock_parens\");\n if (type == \"}\" || type == \";\") return popAndPass(type, stream, state);\n if (type == \"{\") return popContext(state) && pushContext(state, stream, allowNested ? \"block\" : \"top\");\n\n if (type == \"interpolation\") return pushContext(state, stream, \"interpolation\");\n\n if (type == \"word\") {\n var word = stream.current().toLowerCase();\n if (word == \"only\" || word == \"not\" || word == \"and\" || word == \"or\")\n override = \"keyword\";\n else if (mediaTypes.hasOwnProperty(word))\n override = \"attribute\";\n else if (mediaFeatures.hasOwnProperty(word))\n override = \"property\";\n else if (mediaValueKeywords.hasOwnProperty(word))\n override = \"keyword\";\n else if (propertyKeywords.hasOwnProperty(word))\n override = \"property\";\n else if (nonStandardPropertyKeywords.hasOwnProperty(word))\n override = highlightNonStandardPropertyKeywords ? \"string-2\" : \"property\";\n else if (valueKeywords.hasOwnProperty(word))\n override = \"atom\";\n else if (colorKeywords.hasOwnProperty(word))\n override = \"keyword\";\n else\n override = \"error\";\n }\n return state.context.type;\n };\n\n states.atComponentBlock = function(type, stream, state) {\n if (type == \"}\")\n return popAndPass(type, stream, state);\n if (type == \"{\")\n return popContext(state) && pushContext(state, stream, allowNested ? \"block\" : \"top\", false);\n if (type == \"word\")\n override = \"error\";\n return state.context.type;\n };\n\n states.atBlock_parens = function(type, stream, state) {\n if (type == \")\") return popContext(state);\n if (type == \"{\" || type == \"}\") return popAndPass(type, stream, state, 2);\n return states.atBlock(type, stream, state);\n };\n\n states.restricted_atBlock_before = function(type, stream, state) {\n if (type == \"{\")\n return pushContext(state, stream, \"restricted_atBlock\");\n if (type == \"word\" && state.stateArg == \"@counter-style\") {\n override = \"variable\";\n return \"restricted_atBlock_before\";\n }\n return pass(type, stream, state);\n };\n\n states.restricted_atBlock = function(type, stream, state) {\n if (type == \"}\") {\n state.stateArg = null;\n return popContext(state);\n }\n if (type == \"word\") {\n if ((state.stateArg == \"@font-face\" && !fontProperties.hasOwnProperty(stream.current().toLowerCase())) ||\n (state.stateArg == \"@counter-style\" && !counterDescriptors.hasOwnProperty(stream.current().toLowerCase())))\n override = \"error\";\n else\n override = \"property\";\n return \"maybeprop\";\n }\n return \"restricted_atBlock\";\n };\n\n states.keyframes = function(type, stream, state) {\n if (type == \"word\") { override = \"variable\"; return \"keyframes\"; }\n if (type == \"{\") return pushContext(state, stream, \"top\");\n return pass(type, stream, state);\n };\n\n states.at = function(type, stream, state) {\n if (type == \";\") return popContext(state);\n if (type == \"{\" || type == \"}\") return popAndPass(type, stream, state);\n if (type == \"word\") override = \"tag\";\n else if (type == \"hash\") override = \"builtin\";\n return \"at\";\n };\n\n states.interpolation = function(type, stream, state) {\n if (type == \"}\") return popContext(state);\n if (type == \"{\" || type == \";\") return popAndPass(type, stream, state);\n if (type == \"word\") override = \"variable\";\n else if (type != \"variable\" && type != \"(\" && type != \")\") override = \"error\";\n return \"interpolation\";\n };\n\n return {\n startState: function(base) {\n return {tokenize: null,\n state: inline ? \"block\" : \"top\",\n stateArg: null,\n context: new Context(inline ? \"block\" : \"top\", base || 0, null)};\n },\n\n token: function(stream, state) {\n if (!state.tokenize && stream.eatSpace()) return null;\n var style = (state.tokenize || tokenBase)(stream, state);\n if (style && typeof style == \"object\") {\n type = style[1];\n style = style[0];\n }\n override = style;\n if (type != \"comment\")\n state.state = states[state.state](type, stream, state);\n return override;\n },\n\n indent: function(state, textAfter) {\n var cx = state.context, ch = textAfter && textAfter.charAt(0);\n var indent = cx.indent;\n if (cx.type == \"prop\" && (ch == \"}\" || ch == \")\")) cx = cx.prev;\n if (cx.prev) {\n if (ch == \"}\" && (cx.type == \"block\" || cx.type == \"top\" ||\n cx.type == \"interpolation\" || cx.type == \"restricted_atBlock\")) {\n // Resume indentation from parent context.\n cx = cx.prev;\n indent = cx.indent;\n } else if (ch == \")\" && (cx.type == \"parens\" || cx.type == \"atBlock_parens\") ||\n ch == \"{\" && (cx.type == \"at\" || cx.type == \"atBlock\")) {\n // Dedent relative to current context.\n indent = Math.max(0, cx.indent - indentUnit);\n }\n }\n return indent;\n },\n\n electricChars: \"}\",\n blockCommentStart: \"/*\",\n blockCommentEnd: \"*/\",\n blockCommentContinue: \" * \",\n lineComment: lineComment,\n fold: \"brace\"\n };\n});\n\n function keySet(array) {\n var keys = {};\n for (var i = 0; i < array.length; ++i) {\n keys[array[i].toLowerCase()] = true;\n }\n return keys;\n }\n\n var documentTypes_ = [\n \"domain\", \"regexp\", \"url\", \"url-prefix\"\n ], documentTypes = keySet(documentTypes_);\n\n var mediaTypes_ = [\n \"all\", \"aural\", \"braille\", \"handheld\", \"print\", \"projection\", \"screen\",\n \"tty\", \"tv\", \"embossed\"\n ], mediaTypes = keySet(mediaTypes_);\n\n var mediaFeatures_ = [\n \"width\", \"min-width\", \"max-width\", \"height\", \"min-height\", \"max-height\",\n \"device-width\", \"min-device-width\", \"max-device-width\", \"device-height\",\n \"min-device-height\", \"max-device-height\", \"aspect-ratio\",\n \"min-aspect-ratio\", \"max-aspect-ratio\", \"device-aspect-ratio\",\n \"min-device-aspect-ratio\", \"max-device-aspect-ratio\", \"color\", \"min-color\",\n \"max-color\", \"color-index\", \"min-color-index\", \"max-color-index\",\n \"monochrome\", \"min-monochrome\", \"max-monochrome\", \"resolution\",\n \"min-resolution\", \"max-resolution\", \"scan\", \"grid\", \"orientation\",\n \"device-pixel-ratio\", \"min-device-pixel-ratio\", \"max-device-pixel-ratio\",\n \"pointer\", \"any-pointer\", \"hover\", \"any-hover\", \"prefers-color-scheme\",\n \"dynamic-range\", \"video-dynamic-range\"\n ], mediaFeatures = keySet(mediaFeatures_);\n\n var mediaValueKeywords_ = [\n \"landscape\", \"portrait\", \"none\", \"coarse\", \"fine\", \"on-demand\", \"hover\",\n \"interlace\", \"progressive\",\n \"dark\", \"light\",\n \"standard\", \"high\"\n ], mediaValueKeywords = keySet(mediaValueKeywords_);\n\n var propertyKeywords_ = [\n \"align-content\", \"align-items\", \"align-self\", \"alignment-adjust\",\n \"alignment-baseline\", \"all\", \"anchor-point\", \"animation\", \"animation-delay\",\n \"animation-direction\", \"animation-duration\", \"animation-fill-mode\",\n \"animation-iteration-count\", \"animation-name\", \"animation-play-state\",\n \"animation-timing-function\", \"appearance\", \"azimuth\", \"backdrop-filter\",\n \"backface-visibility\", \"background\", \"background-attachment\",\n \"background-blend-mode\", \"background-clip\", \"background-color\",\n \"background-image\", \"background-origin\", \"background-position\",\n \"background-position-x\", \"background-position-y\", \"background-repeat\",\n \"background-size\", \"baseline-shift\", \"binding\", \"bleed\", \"block-size\",\n \"bookmark-label\", \"bookmark-level\", \"bookmark-state\", \"bookmark-target\",\n \"border\", \"border-bottom\", \"border-bottom-color\", \"border-bottom-left-radius\",\n \"border-bottom-right-radius\", \"border-bottom-style\", \"border-bottom-width\",\n \"border-collapse\", \"border-color\", \"border-image\", \"border-image-outset\",\n \"border-image-repeat\", \"border-image-slice\", \"border-image-source\",\n \"border-image-width\", \"border-left\", \"border-left-color\", \"border-left-style\",\n \"border-left-width\", \"border-radius\", \"border-right\", \"border-right-color\",\n \"border-right-style\", \"border-right-width\", \"border-spacing\", \"border-style\",\n \"border-top\", \"border-top-color\", \"border-top-left-radius\",\n \"border-top-right-radius\", \"border-top-style\", \"border-top-width\",\n \"border-width\", \"bottom\", \"box-decoration-break\", \"box-shadow\", \"box-sizing\",\n \"break-after\", \"break-before\", \"break-inside\", \"caption-side\", \"caret-color\",\n \"clear\", \"clip\", \"color\", \"color-profile\", \"column-count\", \"column-fill\",\n \"column-gap\", \"column-rule\", \"column-rule-color\", \"column-rule-style\",\n \"column-rule-width\", \"column-span\", \"column-width\", \"columns\", \"contain\",\n \"content\", \"counter-increment\", \"counter-reset\", \"crop\", \"cue\", \"cue-after\",\n \"cue-before\", \"cursor\", \"direction\", \"display\", \"dominant-baseline\",\n \"drop-initial-after-adjust\", \"drop-initial-after-align\",\n \"drop-initial-before-adjust\", \"drop-initial-before-align\", \"drop-initial-size\",\n \"drop-initial-value\", \"elevation\", \"empty-cells\", \"fit\", \"fit-content\", \"fit-position\",\n \"flex\", \"flex-basis\", \"flex-direction\", \"flex-flow\", \"flex-grow\",\n \"flex-shrink\", \"flex-wrap\", \"float\", \"float-offset\", \"flow-from\", \"flow-into\",\n \"font\", \"font-family\", \"font-feature-settings\", \"font-kerning\",\n \"font-language-override\", \"font-optical-sizing\", \"font-size\",\n \"font-size-adjust\", \"font-stretch\", \"font-style\", \"font-synthesis\",\n \"font-variant\", \"font-variant-alternates\", \"font-variant-caps\",\n \"font-variant-east-asian\", \"font-variant-ligatures\", \"font-variant-numeric\",\n \"font-variant-position\", \"font-variation-settings\", \"font-weight\", \"gap\",\n \"grid\", \"grid-area\", \"grid-auto-columns\", \"grid-auto-flow\", \"grid-auto-rows\",\n \"grid-column\", \"grid-column-end\", \"grid-column-gap\", \"grid-column-start\",\n \"grid-gap\", \"grid-row\", \"grid-row-end\", \"grid-row-gap\", \"grid-row-start\",\n \"grid-template\", \"grid-template-areas\", \"grid-template-columns\",\n \"grid-template-rows\", \"hanging-punctuation\", \"height\", \"hyphens\", \"icon\",\n \"image-orientation\", \"image-rendering\", \"image-resolution\", \"inline-box-align\",\n \"inset\", \"inset-block\", \"inset-block-end\", \"inset-block-start\", \"inset-inline\",\n \"inset-inline-end\", \"inset-inline-start\", \"isolation\", \"justify-content\",\n \"justify-items\", \"justify-self\", \"left\", \"letter-spacing\", \"line-break\",\n \"line-height\", \"line-height-step\", \"line-stacking\", \"line-stacking-ruby\",\n \"line-stacking-shift\", \"line-stacking-strategy\", \"list-style\",\n \"list-style-image\", \"list-style-position\", \"list-style-type\", \"margin\",\n \"margin-bottom\", \"margin-left\", \"margin-right\", \"margin-top\", \"marks\",\n \"marquee-direction\", \"marquee-loop\", \"marquee-play-count\", \"marquee-speed\",\n \"marquee-style\", \"mask-clip\", \"mask-composite\", \"mask-image\", \"mask-mode\",\n \"mask-origin\", \"mask-position\", \"mask-repeat\", \"mask-size\",\"mask-type\",\n \"max-block-size\", \"max-height\", \"max-inline-size\",\n \"max-width\", \"min-block-size\", \"min-height\", \"min-inline-size\", \"min-width\",\n \"mix-blend-mode\", \"move-to\", \"nav-down\", \"nav-index\", \"nav-left\", \"nav-right\",\n \"nav-up\", \"object-fit\", \"object-position\", \"offset\", \"offset-anchor\",\n \"offset-distance\", \"offset-path\", \"offset-position\", \"offset-rotate\",\n \"opacity\", \"order\", \"orphans\", \"outline\", \"outline-color\", \"outline-offset\",\n \"outline-style\", \"outline-width\", \"overflow\", \"overflow-style\",\n \"overflow-wrap\", \"overflow-x\", \"overflow-y\", \"padding\", \"padding-bottom\",\n \"padding-left\", \"padding-right\", \"padding-top\", \"page\", \"page-break-after\",\n \"page-break-before\", \"page-break-inside\", \"page-policy\", \"pause\",\n \"pause-after\", \"pause-before\", \"perspective\", \"perspective-origin\", \"pitch\",\n \"pitch-range\", \"place-content\", \"place-items\", \"place-self\", \"play-during\",\n \"position\", \"presentation-level\", \"punctuation-trim\", \"quotes\",\n \"region-break-after\", \"region-break-before\", \"region-break-inside\",\n \"region-fragment\", \"rendering-intent\", \"resize\", \"rest\", \"rest-after\",\n \"rest-before\", \"richness\", \"right\", \"rotate\", \"rotation\", \"rotation-point\",\n \"row-gap\", \"ruby-align\", \"ruby-overhang\", \"ruby-position\", \"ruby-span\",\n \"scale\", \"scroll-behavior\", \"scroll-margin\", \"scroll-margin-block\",\n \"scroll-margin-block-end\", \"scroll-margin-block-start\", \"scroll-margin-bottom\",\n \"scroll-margin-inline\", \"scroll-margin-inline-end\",\n \"scroll-margin-inline-start\", \"scroll-margin-left\", \"scroll-margin-right\",\n \"scroll-margin-top\", \"scroll-padding\", \"scroll-padding-block\",\n \"scroll-padding-block-end\", \"scroll-padding-block-start\",\n \"scroll-padding-bottom\", \"scroll-padding-inline\", \"scroll-padding-inline-end\",\n \"scroll-padding-inline-start\", \"scroll-padding-left\", \"scroll-padding-right\",\n \"scroll-padding-top\", \"scroll-snap-align\", \"scroll-snap-type\",\n \"shape-image-threshold\", \"shape-inside\", \"shape-margin\", \"shape-outside\",\n \"size\", \"speak\", \"speak-as\", \"speak-header\", \"speak-numeral\",\n \"speak-punctuation\", \"speech-rate\", \"stress\", \"string-set\", \"tab-size\",\n \"table-layout\", \"target\", \"target-name\", \"target-new\", \"target-position\",\n \"text-align\", \"text-align-last\", \"text-combine-upright\", \"text-decoration\",\n \"text-decoration-color\", \"text-decoration-line\", \"text-decoration-skip\",\n \"text-decoration-skip-ink\", \"text-decoration-style\", \"text-emphasis\",\n \"text-emphasis-color\", \"text-emphasis-position\", \"text-emphasis-style\",\n \"text-height\", \"text-indent\", \"text-justify\", \"text-orientation\",\n \"text-outline\", \"text-overflow\", \"text-rendering\", \"text-shadow\",\n \"text-size-adjust\", \"text-space-collapse\", \"text-transform\",\n \"text-underline-position\", \"text-wrap\", \"top\", \"touch-action\", \"transform\", \"transform-origin\",\n \"transform-style\", \"transition\", \"transition-delay\", \"transition-duration\",\n \"transition-property\", \"transition-timing-function\", \"translate\",\n \"unicode-bidi\", \"user-select\", \"vertical-align\", \"visibility\", \"voice-balance\",\n \"voice-duration\", \"voice-family\", \"voice-pitch\", \"voice-range\", \"voice-rate\",\n \"voice-stress\", \"voice-volume\", \"volume\", \"white-space\", \"widows\", \"width\",\n \"will-change\", \"word-break\", \"word-spacing\", \"word-wrap\", \"writing-mode\", \"z-index\",\n // SVG-specific\n \"clip-path\", \"clip-rule\", \"mask\", \"enable-background\", \"filter\", \"flood-color\",\n \"flood-opacity\", \"lighting-color\", \"stop-color\", \"stop-opacity\", \"pointer-events\",\n \"color-interpolation\", \"color-interpolation-filters\",\n \"color-rendering\", \"fill\", \"fill-opacity\", \"fill-rule\", \"image-rendering\",\n \"marker\", \"marker-end\", \"marker-mid\", \"marker-start\", \"paint-order\", \"shape-rendering\", \"stroke\",\n \"stroke-dasharray\", \"stroke-dashoffset\", \"stroke-linecap\", \"stroke-linejoin\",\n \"stroke-miterlimit\", \"stroke-opacity\", \"stroke-width\", \"text-rendering\",\n \"baseline-shift\", \"dominant-baseline\", \"glyph-orientation-horizontal\",\n \"glyph-orientation-vertical\", \"text-anchor\", \"writing-mode\",\n ], propertyKeywords = keySet(propertyKeywords_);\n\n var nonStandardPropertyKeywords_ = [\n \"accent-color\", \"aspect-ratio\", \"border-block\", \"border-block-color\", \"border-block-end\",\n \"border-block-end-color\", \"border-block-end-style\", \"border-block-end-width\",\n \"border-block-start\", \"border-block-start-color\", \"border-block-start-style\",\n \"border-block-start-width\", \"border-block-style\", \"border-block-width\",\n \"border-inline\", \"border-inline-color\", \"border-inline-end\",\n \"border-inline-end-color\", \"border-inline-end-style\",\n \"border-inline-end-width\", \"border-inline-start\", \"border-inline-start-color\",\n \"border-inline-start-style\", \"border-inline-start-width\",\n \"border-inline-style\", \"border-inline-width\", \"content-visibility\", \"margin-block\",\n \"margin-block-end\", \"margin-block-start\", \"margin-inline\", \"margin-inline-end\",\n \"margin-inline-start\", \"overflow-anchor\", \"overscroll-behavior\", \"padding-block\", \"padding-block-end\",\n \"padding-block-start\", \"padding-inline\", \"padding-inline-end\",\n \"padding-inline-start\", \"scroll-snap-stop\", \"scrollbar-3d-light-color\",\n \"scrollbar-arrow-color\", \"scrollbar-base-color\", \"scrollbar-dark-shadow-color\",\n \"scrollbar-face-color\", \"scrollbar-highlight-color\", \"scrollbar-shadow-color\",\n \"scrollbar-track-color\", \"searchfield-cancel-button\", \"searchfield-decoration\",\n \"searchfield-results-button\", \"searchfield-results-decoration\", \"shape-inside\", \"zoom\"\n ], nonStandardPropertyKeywords = keySet(nonStandardPropertyKeywords_);\n\n var fontProperties_ = [\n \"font-display\", \"font-family\", \"src\", \"unicode-range\", \"font-variant\",\n \"font-feature-settings\", \"font-stretch\", \"font-weight\", \"font-style\"\n ], fontProperties = keySet(fontProperties_);\n\n var counterDescriptors_ = [\n \"additive-symbols\", \"fallback\", \"negative\", \"pad\", \"prefix\", \"range\",\n \"speak-as\", \"suffix\", \"symbols\", \"system\"\n ], counterDescriptors = keySet(counterDescriptors_);\n\n var colorKeywords_ = [\n \"aliceblue\", \"antiquewhite\", \"aqua\", \"aquamarine\", \"azure\", \"beige\",\n \"bisque\", \"black\", \"blanchedalmond\", \"blue\", \"blueviolet\", \"brown\",\n \"burlywood\", \"cadetblue\", \"chartreuse\", \"chocolate\", \"coral\", \"cornflowerblue\",\n \"cornsilk\", \"crimson\", \"cyan\", \"darkblue\", \"darkcyan\", \"darkgoldenrod\",\n \"darkgray\", \"darkgreen\", \"darkgrey\", \"darkkhaki\", \"darkmagenta\", \"darkolivegreen\",\n \"darkorange\", \"darkorchid\", \"darkred\", \"darksalmon\", \"darkseagreen\",\n \"darkslateblue\", \"darkslategray\", \"darkslategrey\", \"darkturquoise\", \"darkviolet\",\n \"deeppink\", \"deepskyblue\", \"dimgray\", \"dimgrey\", \"dodgerblue\", \"firebrick\",\n \"floralwhite\", \"forestgreen\", \"fuchsia\", \"gainsboro\", \"ghostwhite\",\n \"gold\", \"goldenrod\", \"gray\", \"grey\", \"green\", \"greenyellow\", \"honeydew\",\n \"hotpink\", \"indianred\", \"indigo\", \"ivory\", \"khaki\", \"lavender\",\n \"lavenderblush\", \"lawngreen\", \"lemonchiffon\", \"lightblue\", \"lightcoral\",\n \"lightcyan\", \"lightgoldenrodyellow\", \"lightgray\", \"lightgreen\", \"lightgrey\", \"lightpink\",\n \"lightsalmon\", \"lightseagreen\", \"lightskyblue\", \"lightslategray\", \"lightslategrey\",\n \"lightsteelblue\", \"lightyellow\", \"lime\", \"limegreen\", \"linen\", \"magenta\",\n \"maroon\", \"mediumaquamarine\", \"mediumblue\", \"mediumorchid\", \"mediumpurple\",\n \"mediumseagreen\", \"mediumslateblue\", \"mediumspringgreen\", \"mediumturquoise\",\n \"mediumvioletred\", \"midnightblue\", \"mintcream\", \"mistyrose\", \"moccasin\",\n \"navajowhite\", \"navy\", \"oldlace\", \"olive\", \"olivedrab\", \"orange\", \"orangered\",\n \"orchid\", \"palegoldenrod\", \"palegreen\", \"paleturquoise\", \"palevioletred\",\n \"papayawhip\", \"peachpuff\", \"peru\", \"pink\", \"plum\", \"powderblue\",\n \"purple\", \"rebeccapurple\", \"red\", \"rosybrown\", \"royalblue\", \"saddlebrown\",\n \"salmon\", \"sandybrown\", \"seagreen\", \"seashell\", \"sienna\", \"silver\", \"skyblue\",\n \"slateblue\", \"slategray\", \"slategrey\", \"snow\", \"springgreen\", \"steelblue\", \"tan\",\n \"teal\", \"thistle\", \"tomato\", \"turquoise\", \"violet\", \"wheat\", \"white\",\n \"whitesmoke\", \"yellow\", \"yellowgreen\"\n ], colorKeywords = keySet(colorKeywords_);\n\n var valueKeywords_ = [\n \"above\", \"absolute\", \"activeborder\", \"additive\", \"activecaption\", \"afar\",\n \"after-white-space\", \"ahead\", \"alias\", \"all\", \"all-scroll\", \"alphabetic\", \"alternate\",\n \"always\", \"amharic\", \"amharic-abegede\", \"antialiased\", \"appworkspace\",\n \"arabic-indic\", \"armenian\", \"asterisks\", \"attr\", \"auto\", \"auto-flow\", \"avoid\", \"avoid-column\", \"avoid-page\",\n \"avoid-region\", \"axis-pan\", \"background\", \"backwards\", \"baseline\", \"below\", \"bidi-override\", \"binary\",\n \"bengali\", \"blink\", \"block\", \"block-axis\", \"blur\", \"bold\", \"bolder\", \"border\", \"border-box\",\n \"both\", \"bottom\", \"break\", \"break-all\", \"break-word\", \"brightness\", \"bullets\", \"button\",\n \"buttonface\", \"buttonhighlight\", \"buttonshadow\", \"buttontext\", \"calc\", \"cambodian\",\n \"capitalize\", \"caps-lock-indicator\", \"caption\", \"captiontext\", \"caret\",\n \"cell\", \"center\", \"checkbox\", \"circle\", \"cjk-decimal\", \"cjk-earthly-branch\",\n \"cjk-heavenly-stem\", \"cjk-ideographic\", \"clear\", \"clip\", \"close-quote\",\n \"col-resize\", \"collapse\", \"color\", \"color-burn\", \"color-dodge\", \"column\", \"column-reverse\",\n \"compact\", \"condensed\", \"conic-gradient\", \"contain\", \"content\", \"contents\",\n \"content-box\", \"context-menu\", \"continuous\", \"contrast\", \"copy\", \"counter\", \"counters\", \"cover\", \"crop\",\n \"cross\", \"crosshair\", \"cubic-bezier\", \"currentcolor\", \"cursive\", \"cyclic\", \"darken\", \"dashed\", \"decimal\",\n \"decimal-leading-zero\", \"default\", \"default-button\", \"dense\", \"destination-atop\",\n \"destination-in\", \"destination-out\", \"destination-over\", \"devanagari\", \"difference\",\n \"disc\", \"discard\", \"disclosure-closed\", \"disclosure-open\", \"document\",\n \"dot-dash\", \"dot-dot-dash\",\n \"dotted\", \"double\", \"down\", \"drop-shadow\", \"e-resize\", \"ease\", \"ease-in\", \"ease-in-out\", \"ease-out\",\n \"element\", \"ellipse\", \"ellipsis\", \"embed\", \"end\", \"ethiopic\", \"ethiopic-abegede\",\n \"ethiopic-abegede-am-et\", \"ethiopic-abegede-gez\", \"ethiopic-abegede-ti-er\",\n \"ethiopic-abegede-ti-et\", \"ethiopic-halehame-aa-er\",\n \"ethiopic-halehame-aa-et\", \"ethiopic-halehame-am-et\",\n \"ethiopic-halehame-gez\", \"ethiopic-halehame-om-et\",\n \"ethiopic-halehame-sid-et\", \"ethiopic-halehame-so-et\",\n \"ethiopic-halehame-ti-er\", \"ethiopic-halehame-ti-et\", \"ethiopic-halehame-tig\",\n \"ethiopic-numeric\", \"ew-resize\", \"exclusion\", \"expanded\", \"extends\", \"extra-condensed\",\n \"extra-expanded\", \"fantasy\", \"fast\", \"fill\", \"fill-box\", \"fixed\", \"flat\", \"flex\", \"flex-end\", \"flex-start\", \"footnotes\",\n \"forwards\", \"from\", \"geometricPrecision\", \"georgian\", \"grayscale\", \"graytext\", \"grid\", \"groove\",\n \"gujarati\", \"gurmukhi\", \"hand\", \"hangul\", \"hangul-consonant\", \"hard-light\", \"hebrew\",\n \"help\", \"hidden\", \"hide\", \"higher\", \"highlight\", \"highlighttext\",\n \"hiragana\", \"hiragana-iroha\", \"horizontal\", \"hsl\", \"hsla\", \"hue\", \"hue-rotate\", \"icon\", \"ignore\",\n \"inactiveborder\", \"inactivecaption\", \"inactivecaptiontext\", \"infinite\",\n \"infobackground\", \"infotext\", \"inherit\", \"initial\", \"inline\", \"inline-axis\",\n \"inline-block\", \"inline-flex\", \"inline-grid\", \"inline-table\", \"inset\", \"inside\", \"intrinsic\", \"invert\",\n \"italic\", \"japanese-formal\", \"japanese-informal\", \"justify\", \"kannada\",\n \"katakana\", \"katakana-iroha\", \"keep-all\", \"khmer\",\n \"korean-hangul-formal\", \"korean-hanja-formal\", \"korean-hanja-informal\",\n \"landscape\", \"lao\", \"large\", \"larger\", \"left\", \"level\", \"lighter\", \"lighten\",\n \"line-through\", \"linear\", \"linear-gradient\", \"lines\", \"list-item\", \"listbox\", \"listitem\",\n \"local\", \"logical\", \"loud\", \"lower\", \"lower-alpha\", \"lower-armenian\",\n \"lower-greek\", \"lower-hexadecimal\", \"lower-latin\", \"lower-norwegian\",\n \"lower-roman\", \"lowercase\", \"ltr\", \"luminosity\", \"malayalam\", \"manipulation\", \"match\", \"matrix\", \"matrix3d\",\n \"media-play-button\", \"media-slider\", \"media-sliderthumb\",\n \"media-volume-slider\", \"media-volume-sliderthumb\", \"medium\",\n \"menu\", \"menulist\", \"menulist-button\",\n \"menutext\", \"message-box\", \"middle\", \"min-intrinsic\",\n \"mix\", \"mongolian\", \"monospace\", \"move\", \"multiple\", \"multiple_mask_images\", \"multiply\", \"myanmar\", \"n-resize\",\n \"narrower\", \"ne-resize\", \"nesw-resize\", \"no-close-quote\", \"no-drop\",\n \"no-open-quote\", \"no-repeat\", \"none\", \"normal\", \"not-allowed\", \"nowrap\",\n \"ns-resize\", \"numbers\", \"numeric\", \"nw-resize\", \"nwse-resize\", \"oblique\", \"octal\", \"opacity\", \"open-quote\",\n \"optimizeLegibility\", \"optimizeSpeed\", \"oriya\", \"oromo\", \"outset\",\n \"outside\", \"outside-shape\", \"overlay\", \"overline\", \"padding\", \"padding-box\",\n \"painted\", \"page\", \"paused\", \"persian\", \"perspective\", \"pinch-zoom\", \"plus-darker\", \"plus-lighter\",\n \"pointer\", \"polygon\", \"portrait\", \"pre\", \"pre-line\", \"pre-wrap\", \"preserve-3d\",\n \"progress\", \"push-button\", \"radial-gradient\", \"radio\", \"read-only\",\n \"read-write\", \"read-write-plaintext-only\", \"rectangle\", \"region\",\n \"relative\", \"repeat\", \"repeating-linear-gradient\", \"repeating-radial-gradient\",\n \"repeating-conic-gradient\", \"repeat-x\", \"repeat-y\", \"reset\", \"reverse\",\n \"rgb\", \"rgba\", \"ridge\", \"right\", \"rotate\", \"rotate3d\", \"rotateX\", \"rotateY\",\n \"rotateZ\", \"round\", \"row\", \"row-resize\", \"row-reverse\", \"rtl\", \"run-in\", \"running\",\n \"s-resize\", \"sans-serif\", \"saturate\", \"saturation\", \"scale\", \"scale3d\", \"scaleX\", \"scaleY\", \"scaleZ\", \"screen\",\n \"scroll\", \"scrollbar\", \"scroll-position\", \"se-resize\", \"searchfield\",\n \"searchfield-cancel-button\", \"searchfield-decoration\",\n \"searchfield-results-button\", \"searchfield-results-decoration\", \"self-start\", \"self-end\",\n \"semi-condensed\", \"semi-expanded\", \"separate\", \"sepia\", \"serif\", \"show\", \"sidama\",\n \"simp-chinese-formal\", \"simp-chinese-informal\", \"single\",\n \"skew\", \"skewX\", \"skewY\", \"skip-white-space\", \"slide\", \"slider-horizontal\",\n \"slider-vertical\", \"sliderthumb-horizontal\", \"sliderthumb-vertical\", \"slow\",\n \"small\", \"small-caps\", \"small-caption\", \"smaller\", \"soft-light\", \"solid\", \"somali\",\n \"source-atop\", \"source-in\", \"source-out\", \"source-over\", \"space\", \"space-around\", \"space-between\", \"space-evenly\", \"spell-out\", \"square\",\n \"square-button\", \"start\", \"static\", \"status-bar\", \"stretch\", \"stroke\", \"stroke-box\", \"sub\",\n \"subpixel-antialiased\", \"svg_masks\", \"super\", \"sw-resize\", \"symbolic\", \"symbols\", \"system-ui\", \"table\",\n \"table-caption\", \"table-cell\", \"table-column\", \"table-column-group\",\n \"table-footer-group\", \"table-header-group\", \"table-row\", \"table-row-group\",\n \"tamil\",\n \"telugu\", \"text\", \"text-bottom\", \"text-top\", \"textarea\", \"textfield\", \"thai\",\n \"thick\", \"thin\", \"threeddarkshadow\", \"threedface\", \"threedhighlight\",\n \"threedlightshadow\", \"threedshadow\", \"tibetan\", \"tigre\", \"tigrinya-er\",\n \"tigrinya-er-abegede\", \"tigrinya-et\", \"tigrinya-et-abegede\", \"to\", \"top\",\n \"trad-chinese-formal\", \"trad-chinese-informal\", \"transform\",\n \"translate\", \"translate3d\", \"translateX\", \"translateY\", \"translateZ\",\n \"transparent\", \"ultra-condensed\", \"ultra-expanded\", \"underline\", \"unidirectional-pan\", \"unset\", \"up\",\n \"upper-alpha\", \"upper-armenian\", \"upper-greek\", \"upper-hexadecimal\",\n \"upper-latin\", \"upper-norwegian\", \"upper-roman\", \"uppercase\", \"urdu\", \"url\",\n \"var\", \"vertical\", \"vertical-text\", \"view-box\", \"visible\", \"visibleFill\", \"visiblePainted\",\n \"visibleStroke\", \"visual\", \"w-resize\", \"wait\", \"wave\", \"wider\",\n \"window\", \"windowframe\", \"windowtext\", \"words\", \"wrap\", \"wrap-reverse\", \"x-large\", \"x-small\", \"xor\",\n \"xx-large\", \"xx-small\"\n ], valueKeywords = keySet(valueKeywords_);\n\n var allWords = documentTypes_.concat(mediaTypes_).concat(mediaFeatures_).concat(mediaValueKeywords_)\n .concat(propertyKeywords_).concat(nonStandardPropertyKeywords_).concat(colorKeywords_)\n .concat(valueKeywords_);\n CodeMirror.registerHelper(\"hintWords\", \"css\", allWords);\n\n function tokenCComment(stream, state) {\n var maybeEnd = false, ch;\n while ((ch = stream.next()) != null) {\n if (maybeEnd && ch == \"/\") {\n state.tokenize = null;\n break;\n }\n maybeEnd = (ch == \"*\");\n }\n return [\"comment\", \"comment\"];\n }\n\n CodeMirror.defineMIME(\"text/css\", {\n documentTypes: documentTypes,\n mediaTypes: mediaTypes,\n mediaFeatures: mediaFeatures,\n mediaValueKeywords: mediaValueKeywords,\n propertyKeywords: propertyKeywords,\n nonStandardPropertyKeywords: nonStandardPropertyKeywords,\n fontProperties: fontProperties,\n counterDescriptors: counterDescriptors,\n colorKeywords: colorKeywords,\n valueKeywords: valueKeywords,\n tokenHooks: {\n \"/\": function(stream, state) {\n if (!stream.eat(\"*\")) return false;\n state.tokenize = tokenCComment;\n return tokenCComment(stream, state);\n }\n },\n name: \"css\"\n });\n\n CodeMirror.defineMIME(\"text/x-scss\", {\n mediaTypes: mediaTypes,\n mediaFeatures: mediaFeatures,\n mediaValueKeywords: mediaValueKeywords,\n propertyKeywords: propertyKeywords,\n nonStandardPropertyKeywords: nonStandardPropertyKeywords,\n colorKeywords: colorKeywords,\n valueKeywords: valueKeywords,\n fontProperties: fontProperties,\n allowNested: true,\n lineComment: \"//\",\n tokenHooks: {\n \"/\": function(stream, state) {\n if (stream.eat(\"/\")) {\n stream.skipToEnd();\n return [\"comment\", \"comment\"];\n } else if (stream.eat(\"*\")) {\n state.tokenize = tokenCComment;\n return tokenCComment(stream, state);\n } else {\n return [\"operator\", \"operator\"];\n }\n },\n \":\": function(stream) {\n if (stream.match(/^\\s*\\{/, false))\n return [null, null]\n return false;\n },\n \"$\": function(stream) {\n stream.match(/^[\\w-]+/);\n if (stream.match(/^\\s*:/, false))\n return [\"variable-2\", \"variable-definition\"];\n return [\"variable-2\", \"variable\"];\n },\n \"#\": function(stream) {\n if (!stream.eat(\"{\")) return false;\n return [null, \"interpolation\"];\n }\n },\n name: \"css\",\n helperType: \"scss\"\n });\n\n CodeMirror.defineMIME(\"text/x-less\", {\n mediaTypes: mediaTypes,\n mediaFeatures: mediaFeatures,\n mediaValueKeywords: mediaValueKeywords,\n propertyKeywords: propertyKeywords,\n nonStandardPropertyKeywords: nonStandardPropertyKeywords,\n colorKeywords: colorKeywords,\n valueKeywords: valueKeywords,\n fontProperties: fontProperties,\n allowNested: true,\n lineComment: \"//\",\n tokenHooks: {\n \"/\": function(stream, state) {\n if (stream.eat(\"/\")) {\n stream.skipToEnd();\n return [\"comment\", \"comment\"];\n } else if (stream.eat(\"*\")) {\n state.tokenize = tokenCComment;\n return tokenCComment(stream, state);\n } else {\n return [\"operator\", \"operator\"];\n }\n },\n \"@\": function(stream) {\n if (stream.eat(\"{\")) return [null, \"interpolation\"];\n if (stream.match(/^(charset|document|font-face|import|(-(moz|ms|o|webkit)-)?keyframes|media|namespace|page|supports)\\b/i, false)) return false;\n stream.eatWhile(/[\\w\\\\\\-]/);\n if (stream.match(/^\\s*:/, false))\n return [\"variable-2\", \"variable-definition\"];\n return [\"variable-2\", \"variable\"];\n },\n \"&\": function() {\n return [\"atom\", \"atom\"];\n }\n },\n name: \"css\",\n helperType: \"less\"\n });\n\n CodeMirror.defineMIME(\"text/x-gss\", {\n documentTypes: documentTypes,\n mediaTypes: mediaTypes,\n mediaFeatures: mediaFeatures,\n propertyKeywords: propertyKeywords,\n nonStandardPropertyKeywords: nonStandardPropertyKeywords,\n fontProperties: fontProperties,\n counterDescriptors: counterDescriptors,\n colorKeywords: colorKeywords,\n valueKeywords: valueKeywords,\n supportsAtComponent: true,\n tokenHooks: {\n \"/\": function(stream, state) {\n if (!stream.eat(\"*\")) return false;\n state.tokenize = tokenCComment;\n return tokenCComment(stream, state);\n }\n },\n name: \"css\",\n helperType: \"gss\"\n });\n\n});\n", "// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/5/LICENSE\n\n(function(mod) {\n if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n mod(require(\"../../lib/codemirror\"));\n else if (typeof define == \"function\" && define.amd) // AMD\n define([\"../../lib/codemirror\"], mod);\n else // Plain browser env\n mod(CodeMirror);\n})(function(CodeMirror) {\n \"use strict\";\n\n CodeMirror.defineSimpleMode = function(name, states) {\n CodeMirror.defineMode(name, function(config) {\n return CodeMirror.simpleMode(config, states);\n });\n };\n\n CodeMirror.simpleMode = function(config, states) {\n ensureState(states, \"start\");\n var states_ = {}, meta = states.meta || {}, hasIndentation = false;\n for (var state in states) if (state != meta && states.hasOwnProperty(state)) {\n var list = states_[state] = [], orig = states[state];\n for (var i = 0; i < orig.length; i++) {\n var data = orig[i];\n list.push(new Rule(data, states));\n if (data.indent || data.dedent) hasIndentation = true;\n }\n }\n var mode = {\n startState: function() {\n return {state: \"start\", pending: null,\n local: null, localState: null,\n indent: hasIndentation ? [] : null};\n },\n copyState: function(state) {\n var s = {state: state.state, pending: state.pending,\n local: state.local, localState: null,\n indent: state.indent && state.indent.slice(0)};\n if (state.localState)\n s.localState = CodeMirror.copyState(state.local.mode, state.localState);\n if (state.stack)\n s.stack = state.stack.slice(0);\n for (var pers = state.persistentStates; pers; pers = pers.next)\n s.persistentStates = {mode: pers.mode,\n spec: pers.spec,\n state: pers.state == state.localState ? s.localState : CodeMirror.copyState(pers.mode, pers.state),\n next: s.persistentStates};\n return s;\n },\n token: tokenFunction(states_, config),\n innerMode: function(state) { return state.local && {mode: state.local.mode, state: state.localState}; },\n indent: indentFunction(states_, meta)\n };\n if (meta) for (var prop in meta) if (meta.hasOwnProperty(prop))\n mode[prop] = meta[prop];\n return mode;\n };\n\n function ensureState(states, name) {\n if (!states.hasOwnProperty(name))\n throw new Error(\"Undefined state \" + name + \" in simple mode\");\n }\n\n function toRegex(val, caret) {\n if (!val) return /(?:)/;\n var flags = \"\";\n if (val instanceof RegExp) {\n if (val.ignoreCase) flags = \"i\";\n if (val.unicode) flags += \"u\"\n val = val.source;\n } else {\n val = String(val);\n }\n return new RegExp((caret === false ? \"\" : \"^\") + \"(?:\" + val + \")\", flags);\n }\n\n function asToken(val) {\n if (!val) return null;\n if (val.apply) return val\n if (typeof val == \"string\") return val.replace(/\\./g, \" \");\n var result = [];\n for (var i = 0; i < val.length; i++)\n result.push(val[i] && val[i].replace(/\\./g, \" \"));\n return result;\n }\n\n function Rule(data, states) {\n if (data.next || data.push) ensureState(states, data.next || data.push);\n this.regex = toRegex(data.regex);\n this.token = asToken(data.token);\n this.data = data;\n }\n\n function tokenFunction(states, config) {\n return function(stream, state) {\n if (state.pending) {\n var pend = state.pending.shift();\n if (state.pending.length == 0) state.pending = null;\n stream.pos += pend.text.length;\n return pend.token;\n }\n\n if (state.local) {\n if (state.local.end && stream.match(state.local.end)) {\n var tok = state.local.endToken || null;\n state.local = state.localState = null;\n return tok;\n } else {\n var tok = state.local.mode.token(stream, state.localState), m;\n if (state.local.endScan && (m = state.local.endScan.exec(stream.current())))\n stream.pos = stream.start + m.index;\n return tok;\n }\n }\n\n var curState = states[state.state];\n for (var i = 0; i < curState.length; i++) {\n var rule = curState[i];\n var matches = (!rule.data.sol || stream.sol()) && stream.match(rule.regex);\n if (matches) {\n if (rule.data.next) {\n state.state = rule.data.next;\n } else if (rule.data.push) {\n (state.stack || (state.stack = [])).push(state.state);\n state.state = rule.data.push;\n } else if (rule.data.pop && state.stack && state.stack.length) {\n state.state = state.stack.pop();\n }\n\n if (rule.data.mode)\n enterLocalMode(config, state, rule.data.mode, rule.token);\n if (rule.data.indent)\n state.indent.push(stream.indentation() + config.indentUnit);\n if (rule.data.dedent)\n state.indent.pop();\n var token = rule.token\n if (token && token.apply) token = token(matches)\n if (matches.length > 2 && rule.token && typeof rule.token != \"string\") {\n for (var j = 2; j < matches.length; j++)\n if (matches[j])\n (state.pending || (state.pending = [])).push({text: matches[j], token: rule.token[j - 1]});\n stream.backUp(matches[0].length - (matches[1] ? matches[1].length : 0));\n return token[0];\n } else if (token && token.join) {\n return token[0];\n } else {\n return token;\n }\n }\n }\n stream.next();\n return null;\n };\n }\n\n function cmp(a, b) {\n if (a === b) return true;\n if (!a || typeof a != \"object\" || !b || typeof b != \"object\") return false;\n var props = 0;\n for (var prop in a) if (a.hasOwnProperty(prop)) {\n if (!b.hasOwnProperty(prop) || !cmp(a[prop], b[prop])) return false;\n props++;\n }\n for (var prop in b) if (b.hasOwnProperty(prop)) props--;\n return props == 0;\n }\n\n function enterLocalMode(config, state, spec, token) {\n var pers;\n if (spec.persistent) for (var p = state.persistentStates; p && !pers; p = p.next)\n if (spec.spec ? cmp(spec.spec, p.spec) : spec.mode == p.mode) pers = p;\n var mode = pers ? pers.mode : spec.mode || CodeMirror.getMode(config, spec.spec);\n var lState = pers ? pers.state : CodeMirror.startState(mode);\n if (spec.persistent && !pers)\n state.persistentStates = {mode: mode, spec: spec.spec, state: lState, next: state.persistentStates};\n\n state.localState = lState;\n state.local = {mode: mode,\n end: spec.end && toRegex(spec.end),\n endScan: spec.end && spec.forceEnd !== false && toRegex(spec.end, false),\n endToken: token && token.join ? token[token.length - 1] : token};\n }\n\n function indexOf(val, arr) {\n for (var i = 0; i < arr.length; i++) if (arr[i] === val) return true;\n }\n\n function indentFunction(states, meta) {\n return function(state, textAfter, line) {\n if (state.local && state.local.mode.indent)\n return state.local.mode.indent(state.localState, textAfter, line);\n if (state.indent == null || state.local || meta.dontIndentStates && indexOf(state.state, meta.dontIndentStates) > -1)\n return CodeMirror.Pass;\n\n var pos = state.indent.length - 1, rules = states[state.state];\n scan: for (;;) {\n for (var i = 0; i < rules.length; i++) {\n var rule = rules[i];\n if (rule.data.dedent && rule.data.dedentIfLineStart !== false) {\n var m = rule.regex.exec(textAfter);\n if (m && m[0]) {\n pos--;\n if (rule.next || rule.push) rules = states[rule.next || rule.push];\n textAfter = textAfter.slice(m[0].length);\n continue scan;\n }\n }\n }\n break;\n }\n return pos < 0 ? 0 : state.indent[pos];\n };\n }\n});\n", "// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/5/LICENSE\n\n(function(mod) {\n if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n mod(require(\"../../lib/codemirror\"), require(\"../../addon/mode/simple\"));\n else if (typeof define == \"function\" && define.amd) // AMD\n define([\"../../lib/codemirror\", \"../../addon/mode/simple\"], mod);\n else // Plain browser env\n mod(CodeMirror);\n})(function(CodeMirror) {\n \"use strict\";\n\n var from = \"from\";\n var fromRegex = new RegExp(\"^(\\\\s*)\\\\b(\" + from + \")\\\\b\", \"i\");\n\n var shells = [\"run\", \"cmd\", \"entrypoint\", \"shell\"];\n var shellsAsArrayRegex = new RegExp(\"^(\\\\s*)(\" + shells.join('|') + \")(\\\\s+\\\\[)\", \"i\");\n\n var expose = \"expose\";\n var exposeRegex = new RegExp(\"^(\\\\s*)(\" + expose + \")(\\\\s+)\", \"i\");\n\n var others = [\n \"arg\", \"from\", \"maintainer\", \"label\", \"env\",\n \"add\", \"copy\", \"volume\", \"user\",\n \"workdir\", \"onbuild\", \"stopsignal\", \"healthcheck\", \"shell\"\n ];\n\n // Collect all Dockerfile directives\n var instructions = [from, expose].concat(shells).concat(others),\n instructionRegex = \"(\" + instructions.join('|') + \")\",\n instructionOnlyLine = new RegExp(\"^(\\\\s*)\" + instructionRegex + \"(\\\\s*)(#.*)?$\", \"i\"),\n instructionWithArguments = new RegExp(\"^(\\\\s*)\" + instructionRegex + \"(\\\\s+)\", \"i\");\n\n CodeMirror.defineSimpleMode(\"dockerfile\", {\n start: [\n // Block comment: This is a line starting with a comment\n {\n regex: /^\\s*#.*$/,\n sol: true,\n token: \"comment\"\n },\n {\n regex: fromRegex,\n token: [null, \"keyword\"],\n sol: true,\n next: \"from\"\n },\n // Highlight an instruction without any arguments (for convenience)\n {\n regex: instructionOnlyLine,\n token: [null, \"keyword\", null, \"error\"],\n sol: true\n },\n {\n regex: shellsAsArrayRegex,\n token: [null, \"keyword\", null],\n sol: true,\n next: \"array\"\n },\n {\n regex: exposeRegex,\n token: [null, \"keyword\", null],\n sol: true,\n next: \"expose\"\n },\n // Highlight an instruction followed by arguments\n {\n regex: instructionWithArguments,\n token: [null, \"keyword\", null],\n sol: true,\n next: \"arguments\"\n },\n {\n regex: /./,\n token: null\n }\n ],\n from: [\n {\n regex: /\\s*$/,\n token: null,\n next: \"start\"\n },\n {\n // Line comment without instruction arguments is an error\n regex: /(\\s*)(#.*)$/,\n token: [null, \"error\"],\n next: \"start\"\n },\n {\n regex: /(\\s*\\S+\\s+)(as)/i,\n token: [null, \"keyword\"],\n next: \"start\"\n },\n // Fail safe return to start\n {\n token: null,\n next: \"start\"\n }\n ],\n single: [\n {\n regex: /(?:[^\\\\']|\\\\.)/,\n token: \"string\"\n },\n {\n regex: /'/,\n token: \"string\",\n pop: true\n }\n ],\n double: [\n {\n regex: /(?:[^\\\\\"]|\\\\.)/,\n token: \"string\"\n },\n {\n regex: /\"/,\n token: \"string\",\n pop: true\n }\n ],\n array: [\n {\n regex: /\\]/,\n token: null,\n next: \"start\"\n },\n {\n regex: /\"(?:[^\\\\\"]|\\\\.)*\"?/,\n token: \"string\"\n }\n ],\n expose: [\n {\n regex: /\\d+$/,\n token: \"number\",\n next: \"start\"\n },\n {\n regex: /[^\\d]+$/,\n token: null,\n next: \"start\"\n },\n {\n regex: /\\d+/,\n token: \"number\"\n },\n {\n regex: /[^\\d]+/,\n token: null\n },\n // Fail safe return to start\n {\n token: null,\n next: \"start\"\n }\n ],\n arguments: [\n {\n regex: /^\\s*#.*$/,\n sol: true,\n token: \"comment\"\n },\n {\n regex: /\"(?:[^\\\\\"]|\\\\.)*\"?$/,\n token: \"string\",\n next: \"start\"\n },\n {\n regex: /\"/,\n token: \"string\",\n push: \"double\"\n },\n {\n regex: /'(?:[^\\\\']|\\\\.)*'?$/,\n token: \"string\",\n next: \"start\"\n },\n {\n regex: /'/,\n token: \"string\",\n push: \"single\"\n },\n {\n regex: /[^#\"']+[\\\\`]$/,\n token: null\n },\n {\n regex: /[^#\"']+$/,\n token: null,\n next: \"start\"\n },\n {\n regex: /[^#\"']+/,\n token: null\n },\n // Fail safe return to start\n {\n token: null,\n next: \"start\"\n }\n ],\n meta: {\n lineComment: \"#\"\n }\n });\n\n CodeMirror.defineMIME(\"text/x-dockerfile\", \"dockerfile\");\n});\n", "// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/5/LICENSE\n\n(function(mod) {\n if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n mod(require(\"../../lib/codemirror\"));\n else if (typeof define == \"function\" && define.amd) // AMD\n define([\"../../lib/codemirror\"], mod);\n else // Plain browser env\n mod(CodeMirror);\n})(function(CodeMirror) {\n\"use strict\";\n\nvar htmlConfig = {\n autoSelfClosers: {'area': true, 'base': true, 'br': true, 'col': true, 'command': true,\n 'embed': true, 'frame': true, 'hr': true, 'img': true, 'input': true,\n 'keygen': true, 'link': true, 'meta': true, 'param': true, 'source': true,\n 'track': true, 'wbr': true, 'menuitem': true},\n implicitlyClosed: {'dd': true, 'li': true, 'optgroup': true, 'option': true, 'p': true,\n 'rp': true, 'rt': true, 'tbody': true, 'td': true, 'tfoot': true,\n 'th': true, 'tr': true},\n contextGrabbers: {\n 'dd': {'dd': true, 'dt': true},\n 'dt': {'dd': true, 'dt': true},\n 'li': {'li': true},\n 'option': {'option': true, 'optgroup': true},\n 'optgroup': {'optgroup': true},\n 'p': {'address': true, 'article': true, 'aside': true, 'blockquote': true, 'dir': true,\n 'div': true, 'dl': true, 'fieldset': true, 'footer': true, 'form': true,\n 'h1': true, 'h2': true, 'h3': true, 'h4': true, 'h5': true, 'h6': true,\n 'header': true, 'hgroup': true, 'hr': true, 'menu': true, 'nav': true, 'ol': true,\n 'p': true, 'pre': true, 'section': true, 'table': true, 'ul': true},\n 'rp': {'rp': true, 'rt': true},\n 'rt': {'rp': true, 'rt': true},\n 'tbody': {'tbody': true, 'tfoot': true},\n 'td': {'td': true, 'th': true},\n 'tfoot': {'tbody': true},\n 'th': {'td': true, 'th': true},\n 'thead': {'tbody': true, 'tfoot': true},\n 'tr': {'tr': true}\n },\n doNotIndent: {\"pre\": true},\n allowUnquoted: true,\n allowMissing: true,\n caseFold: true\n}\n\nvar xmlConfig = {\n autoSelfClosers: {},\n implicitlyClosed: {},\n contextGrabbers: {},\n doNotIndent: {},\n allowUnquoted: false,\n allowMissing: false,\n allowMissingTagName: false,\n caseFold: false\n}\n\nCodeMirror.defineMode(\"xml\", function(editorConf, config_) {\n var indentUnit = editorConf.indentUnit\n var config = {}\n var defaults = config_.htmlMode ? htmlConfig : xmlConfig\n for (var prop in defaults) config[prop] = defaults[prop]\n for (var prop in config_) config[prop] = config_[prop]\n\n // Return variables for tokenizers\n var type, setStyle;\n\n function inText(stream, state) {\n function chain(parser) {\n state.tokenize = parser;\n return parser(stream, state);\n }\n\n var ch = stream.next();\n if (ch == \"<\") {\n if (stream.eat(\"!\")) {\n if (stream.eat(\"[\")) {\n if (stream.match(\"CDATA[\")) return chain(inBlock(\"atom\", \"]]>\"));\n else return null;\n } else if (stream.match(\"--\")) {\n return chain(inBlock(\"comment\", \"-->\"));\n } else if (stream.match(\"DOCTYPE\", true, true)) {\n stream.eatWhile(/[\\w\\._\\-]/);\n return chain(doctype(1));\n } else {\n return null;\n }\n } else if (stream.eat(\"?\")) {\n stream.eatWhile(/[\\w\\._\\-]/);\n state.tokenize = inBlock(\"meta\", \"?>\");\n return \"meta\";\n } else {\n type = stream.eat(\"/\") ? \"closeTag\" : \"openTag\";\n state.tokenize = inTag;\n return \"tag bracket\";\n }\n } else if (ch == \"&\") {\n var ok;\n if (stream.eat(\"#\")) {\n if (stream.eat(\"x\")) {\n ok = stream.eatWhile(/[a-fA-F\\d]/) && stream.eat(\";\");\n } else {\n ok = stream.eatWhile(/[\\d]/) && stream.eat(\";\");\n }\n } else {\n ok = stream.eatWhile(/[\\w\\.\\-:]/) && stream.eat(\";\");\n }\n return ok ? \"atom\" : \"error\";\n } else {\n stream.eatWhile(/[^&<]/);\n return null;\n }\n }\n inText.isInText = true;\n\n function inTag(stream, state) {\n var ch = stream.next();\n if (ch == \">\" || (ch == \"/\" && stream.eat(\">\"))) {\n state.tokenize = inText;\n type = ch == \">\" ? \"endTag\" : \"selfcloseTag\";\n return \"tag bracket\";\n } else if (ch == \"=\") {\n type = \"equals\";\n return null;\n } else if (ch == \"<\") {\n state.tokenize = inText;\n state.state = baseState;\n state.tagName = state.tagStart = null;\n var next = state.tokenize(stream, state);\n return next ? next + \" tag error\" : \"tag error\";\n } else if (/[\\'\\\"]/.test(ch)) {\n state.tokenize = inAttribute(ch);\n state.stringStartCol = stream.column();\n return state.tokenize(stream, state);\n } else {\n stream.match(/^[^\\s\\u00a0=<>\\\"\\']*[^\\s\\u00a0=<>\\\"\\'\\/]/);\n return \"word\";\n }\n }\n\n function inAttribute(quote) {\n var closure = function(stream, state) {\n while (!stream.eol()) {\n if (stream.next() == quote) {\n state.tokenize = inTag;\n break;\n }\n }\n return \"string\";\n };\n closure.isInAttribute = true;\n return closure;\n }\n\n function inBlock(style, terminator) {\n return function(stream, state) {\n while (!stream.eol()) {\n if (stream.match(terminator)) {\n state.tokenize = inText;\n break;\n }\n stream.next();\n }\n return style;\n }\n }\n\n function doctype(depth) {\n return function(stream, state) {\n var ch;\n while ((ch = stream.next()) != null) {\n if (ch == \"<\") {\n state.tokenize = doctype(depth + 1);\n return state.tokenize(stream, state);\n } else if (ch == \">\") {\n if (depth == 1) {\n state.tokenize = inText;\n break;\n } else {\n state.tokenize = doctype(depth - 1);\n return state.tokenize(stream, state);\n }\n }\n }\n return \"meta\";\n };\n }\n\n function lower(tagName) {\n return tagName && tagName.toLowerCase();\n }\n\n function Context(state, tagName, startOfLine) {\n this.prev = state.context;\n this.tagName = tagName || \"\";\n this.indent = state.indented;\n this.startOfLine = startOfLine;\n if (config.doNotIndent.hasOwnProperty(tagName) || (state.context && state.context.noIndent))\n this.noIndent = true;\n }\n function popContext(state) {\n if (state.context) state.context = state.context.prev;\n }\n function maybePopContext(state, nextTagName) {\n var parentTagName;\n while (true) {\n if (!state.context) {\n return;\n }\n parentTagName = state.context.tagName;\n if (!config.contextGrabbers.hasOwnProperty(lower(parentTagName)) ||\n !config.contextGrabbers[lower(parentTagName)].hasOwnProperty(lower(nextTagName))) {\n return;\n }\n popContext(state);\n }\n }\n\n function baseState(type, stream, state) {\n if (type == \"openTag\") {\n state.tagStart = stream.column();\n return tagNameState;\n } else if (type == \"closeTag\") {\n return closeTagNameState;\n } else {\n return baseState;\n }\n }\n function tagNameState(type, stream, state) {\n if (type == \"word\") {\n state.tagName = stream.current();\n setStyle = \"tag\";\n return attrState;\n } else if (config.allowMissingTagName && type == \"endTag\") {\n setStyle = \"tag bracket\";\n return attrState(type, stream, state);\n } else {\n setStyle = \"error\";\n return tagNameState;\n }\n }\n function closeTagNameState(type, stream, state) {\n if (type == \"word\") {\n var tagName = stream.current();\n if (state.context && state.context.tagName != tagName &&\n config.implicitlyClosed.hasOwnProperty(lower(state.context.tagName)))\n popContext(state);\n if ((state.context && state.context.tagName == tagName) || config.matchClosing === false) {\n setStyle = \"tag\";\n return closeState;\n } else {\n setStyle = \"tag error\";\n return closeStateErr;\n }\n } else if (config.allowMissingTagName && type == \"endTag\") {\n setStyle = \"tag bracket\";\n return closeState(type, stream, state);\n } else {\n setStyle = \"error\";\n return closeStateErr;\n }\n }\n\n function closeState(type, _stream, state) {\n if (type != \"endTag\") {\n setStyle = \"error\";\n return closeState;\n }\n popContext(state);\n return baseState;\n }\n function closeStateErr(type, stream, state) {\n setStyle = \"error\";\n return closeState(type, stream, state);\n }\n\n function attrState(type, _stream, state) {\n if (type == \"word\") {\n setStyle = \"attribute\";\n return attrEqState;\n } else if (type == \"endTag\" || type == \"selfcloseTag\") {\n var tagName = state.tagName, tagStart = state.tagStart;\n state.tagName = state.tagStart = null;\n if (type == \"selfcloseTag\" ||\n config.autoSelfClosers.hasOwnProperty(lower(tagName))) {\n maybePopContext(state, tagName);\n } else {\n maybePopContext(state, tagName);\n state.context = new Context(state, tagName, tagStart == state.indented);\n }\n return baseState;\n }\n setStyle = \"error\";\n return attrState;\n }\n function attrEqState(type, stream, state) {\n if (type == \"equals\") return attrValueState;\n if (!config.allowMissing) setStyle = \"error\";\n return attrState(type, stream, state);\n }\n function attrValueState(type, stream, state) {\n if (type == \"string\") return attrContinuedState;\n if (type == \"word\" && config.allowUnquoted) {setStyle = \"string\"; return attrState;}\n setStyle = \"error\";\n return attrState(type, stream, state);\n }\n function attrContinuedState(type, stream, state) {\n if (type == \"string\") return attrContinuedState;\n return attrState(type, stream, state);\n }\n\n return {\n startState: function(baseIndent) {\n var state = {tokenize: inText,\n state: baseState,\n indented: baseIndent || 0,\n tagName: null, tagStart: null,\n context: null}\n if (baseIndent != null) state.baseIndent = baseIndent\n return state\n },\n\n token: function(stream, state) {\n if (!state.tagName && stream.sol())\n state.indented = stream.indentation();\n\n if (stream.eatSpace()) return null;\n type = null;\n var style = state.tokenize(stream, state);\n if ((style || type) && style != \"comment\") {\n setStyle = null;\n state.state = state.state(type || style, stream, state);\n if (setStyle)\n style = setStyle == \"error\" ? style + \" error\" : setStyle;\n }\n return style;\n },\n\n indent: function(state, textAfter, fullLine) {\n var context = state.context;\n // Indent multi-line strings (e.g. css).\n if (state.tokenize.isInAttribute) {\n if (state.tagStart == state.indented)\n return state.stringStartCol + 1;\n else\n return state.indented + indentUnit;\n }\n if (context && context.noIndent) return CodeMirror.Pass;\n if (state.tokenize != inTag && state.tokenize != inText)\n return fullLine ? fullLine.match(/^(\\s*)/)[0].length : 0;\n // Indent the starts of attribute names.\n if (state.tagName) {\n if (config.multilineTagIndentPastTag !== false)\n return state.tagStart + state.tagName.length + 2;\n else\n return state.tagStart + indentUnit * (config.multilineTagIndentFactor || 1);\n }\n if (config.alignCDATA && /$/,\n blockCommentStart: \"\",\n\n configuration: config.htmlMode ? \"html\" : \"xml\",\n helperType: config.htmlMode ? \"html\" : \"xml\",\n\n skipAttribute: function(state) {\n if (state.state == attrValueState)\n state.state = attrState\n },\n\n xmlCurrentTag: function(state) {\n return state.tagName ? {name: state.tagName, close: state.type == \"closeTag\"} : null\n },\n\n xmlCurrentContext: function(state) {\n var context = []\n for (var cx = state.context; cx; cx = cx.prev)\n context.push(cx.tagName)\n return context.reverse()\n }\n };\n});\n\nCodeMirror.defineMIME(\"text/xml\", \"xml\");\nCodeMirror.defineMIME(\"application/xml\", \"xml\");\nif (!CodeMirror.mimeModes.hasOwnProperty(\"text/html\"))\n CodeMirror.defineMIME(\"text/html\", {name: \"xml\", htmlMode: true});\n\n});\n", "// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/5/LICENSE\n\n(function(mod) {\n if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n mod(require(\"../../lib/codemirror\"));\n else if (typeof define == \"function\" && define.amd) // AMD\n define([\"../../lib/codemirror\"], mod);\n else // Plain browser env\n mod(CodeMirror);\n})(function(CodeMirror) {\n\"use strict\";\n\nCodeMirror.defineMode(\"javascript\", function(config, parserConfig) {\n var indentUnit = config.indentUnit;\n var statementIndent = parserConfig.statementIndent;\n var jsonldMode = parserConfig.jsonld;\n var jsonMode = parserConfig.json || jsonldMode;\n var trackScope = parserConfig.trackScope !== false\n var isTS = parserConfig.typescript;\n var wordRE = parserConfig.wordCharacters || /[\\w$\\xa1-\\uffff]/;\n\n // Tokenizer\n\n var keywords = function(){\n function kw(type) {return {type: type, style: \"keyword\"};}\n var A = kw(\"keyword a\"), B = kw(\"keyword b\"), C = kw(\"keyword c\"), D = kw(\"keyword d\");\n var operator = kw(\"operator\"), atom = {type: \"atom\", style: \"atom\"};\n\n return {\n \"if\": kw(\"if\"), \"while\": A, \"with\": A, \"else\": B, \"do\": B, \"try\": B, \"finally\": B,\n \"return\": D, \"break\": D, \"continue\": D, \"new\": kw(\"new\"), \"delete\": C, \"void\": C, \"throw\": C,\n \"debugger\": kw(\"debugger\"), \"var\": kw(\"var\"), \"const\": kw(\"var\"), \"let\": kw(\"var\"),\n \"function\": kw(\"function\"), \"catch\": kw(\"catch\"),\n \"for\": kw(\"for\"), \"switch\": kw(\"switch\"), \"case\": kw(\"case\"), \"default\": kw(\"default\"),\n \"in\": operator, \"typeof\": operator, \"instanceof\": operator,\n \"true\": atom, \"false\": atom, \"null\": atom, \"undefined\": atom, \"NaN\": atom, \"Infinity\": atom,\n \"this\": kw(\"this\"), \"class\": kw(\"class\"), \"super\": kw(\"atom\"),\n \"yield\": C, \"export\": kw(\"export\"), \"import\": kw(\"import\"), \"extends\": C,\n \"await\": C\n };\n }();\n\n var isOperatorChar = /[+\\-*&%=<>!?|~^@]/;\n var isJsonldKeyword = /^@(context|id|value|language|type|container|list|set|reverse|index|base|vocab|graph)\"/;\n\n function readRegexp(stream) {\n var escaped = false, next, inSet = false;\n while ((next = stream.next()) != null) {\n if (!escaped) {\n if (next == \"/\" && !inSet) return;\n if (next == \"[\") inSet = true;\n else if (inSet && next == \"]\") inSet = false;\n }\n escaped = !escaped && next == \"\\\\\";\n }\n }\n\n // Used as scratch variables to communicate multiple values without\n // consing up tons of objects.\n var type, content;\n function ret(tp, style, cont) {\n type = tp; content = cont;\n return style;\n }\n function tokenBase(stream, state) {\n var ch = stream.next();\n if (ch == '\"' || ch == \"'\") {\n state.tokenize = tokenString(ch);\n return state.tokenize(stream, state);\n } else if (ch == \".\" && stream.match(/^\\d[\\d_]*(?:[eE][+\\-]?[\\d_]+)?/)) {\n return ret(\"number\", \"number\");\n } else if (ch == \".\" && stream.match(\"..\")) {\n return ret(\"spread\", \"meta\");\n } else if (/[\\[\\]{}\\(\\),;\\:\\.]/.test(ch)) {\n return ret(ch);\n } else if (ch == \"=\" && stream.eat(\">\")) {\n return ret(\"=>\", \"operator\");\n } else if (ch == \"0\" && stream.match(/^(?:x[\\dA-Fa-f_]+|o[0-7_]+|b[01_]+)n?/)) {\n return ret(\"number\", \"number\");\n } else if (/\\d/.test(ch)) {\n stream.match(/^[\\d_]*(?:n|(?:\\.[\\d_]*)?(?:[eE][+\\-]?[\\d_]+)?)?/);\n return ret(\"number\", \"number\");\n } else if (ch == \"/\") {\n if (stream.eat(\"*\")) {\n state.tokenize = tokenComment;\n return tokenComment(stream, state);\n } else if (stream.eat(\"/\")) {\n stream.skipToEnd();\n return ret(\"comment\", \"comment\");\n } else if (expressionAllowed(stream, state, 1)) {\n readRegexp(stream);\n stream.match(/^\\b(([gimyus])(?![gimyus]*\\2))+\\b/);\n return ret(\"regexp\", \"string-2\");\n } else {\n stream.eat(\"=\");\n return ret(\"operator\", \"operator\", stream.current());\n }\n } else if (ch == \"`\") {\n state.tokenize = tokenQuasi;\n return tokenQuasi(stream, state);\n } else if (ch == \"#\" && stream.peek() == \"!\") {\n stream.skipToEnd();\n return ret(\"meta\", \"meta\");\n } else if (ch == \"#\" && stream.eatWhile(wordRE)) {\n return ret(\"variable\", \"property\")\n } else if (ch == \"<\" && stream.match(\"!--\") ||\n (ch == \"-\" && stream.match(\"->\") && !/\\S/.test(stream.string.slice(0, stream.start)))) {\n stream.skipToEnd()\n return ret(\"comment\", \"comment\")\n } else if (isOperatorChar.test(ch)) {\n if (ch != \">\" || !state.lexical || state.lexical.type != \">\") {\n if (stream.eat(\"=\")) {\n if (ch == \"!\" || ch == \"=\") stream.eat(\"=\")\n } else if (/[<>*+\\-|&?]/.test(ch)) {\n stream.eat(ch)\n if (ch == \">\") stream.eat(ch)\n }\n }\n if (ch == \"?\" && stream.eat(\".\")) return ret(\".\")\n return ret(\"operator\", \"operator\", stream.current());\n } else if (wordRE.test(ch)) {\n stream.eatWhile(wordRE);\n var word = stream.current()\n if (state.lastType != \".\") {\n if (keywords.propertyIsEnumerable(word)) {\n var kw = keywords[word]\n return ret(kw.type, kw.style, word)\n }\n if (word == \"async\" && stream.match(/^(\\s|\\/\\*([^*]|\\*(?!\\/))*?\\*\\/)*[\\[\\(\\w]/, false))\n return ret(\"async\", \"keyword\", word)\n }\n return ret(\"variable\", \"variable\", word)\n }\n }\n\n function tokenString(quote) {\n return function(stream, state) {\n var escaped = false, next;\n if (jsonldMode && stream.peek() == \"@\" && stream.match(isJsonldKeyword)){\n state.tokenize = tokenBase;\n return ret(\"jsonld-keyword\", \"meta\");\n }\n while ((next = stream.next()) != null) {\n if (next == quote && !escaped) break;\n escaped = !escaped && next == \"\\\\\";\n }\n if (!escaped) state.tokenize = tokenBase;\n return ret(\"string\", \"string\");\n };\n }\n\n function tokenComment(stream, state) {\n var maybeEnd = false, ch;\n while (ch = stream.next()) {\n if (ch == \"/\" && maybeEnd) {\n state.tokenize = tokenBase;\n break;\n }\n maybeEnd = (ch == \"*\");\n }\n return ret(\"comment\", \"comment\");\n }\n\n function tokenQuasi(stream, state) {\n var escaped = false, next;\n while ((next = stream.next()) != null) {\n if (!escaped && (next == \"`\" || next == \"$\" && stream.eat(\"{\"))) {\n state.tokenize = tokenBase;\n break;\n }\n escaped = !escaped && next == \"\\\\\";\n }\n return ret(\"quasi\", \"string-2\", stream.current());\n }\n\n var brackets = \"([{}])\";\n // This is a crude lookahead trick to try and notice that we're\n // parsing the argument patterns for a fat-arrow function before we\n // actually hit the arrow token. It only works if the arrow is on\n // the same line as the arguments and there's no strange noise\n // (comments) in between. Fallback is to only notice when we hit the\n // arrow, and not declare the arguments as locals for the arrow\n // body.\n function findFatArrow(stream, state) {\n if (state.fatArrowAt) state.fatArrowAt = null;\n var arrow = stream.string.indexOf(\"=>\", stream.start);\n if (arrow < 0) return;\n\n if (isTS) { // Try to skip TypeScript return type declarations after the arguments\n var m = /:\\s*(?:\\w+(?:<[^>]*>|\\[\\])?|\\{[^}]*\\})\\s*$/.exec(stream.string.slice(stream.start, arrow))\n if (m) arrow = m.index\n }\n\n var depth = 0, sawSomething = false;\n for (var pos = arrow - 1; pos >= 0; --pos) {\n var ch = stream.string.charAt(pos);\n var bracket = brackets.indexOf(ch);\n if (bracket >= 0 && bracket < 3) {\n if (!depth) { ++pos; break; }\n if (--depth == 0) { if (ch == \"(\") sawSomething = true; break; }\n } else if (bracket >= 3 && bracket < 6) {\n ++depth;\n } else if (wordRE.test(ch)) {\n sawSomething = true;\n } else if (/[\"'\\/`]/.test(ch)) {\n for (;; --pos) {\n if (pos == 0) return\n var next = stream.string.charAt(pos - 1)\n if (next == ch && stream.string.charAt(pos - 2) != \"\\\\\") { pos--; break }\n }\n } else if (sawSomething && !depth) {\n ++pos;\n break;\n }\n }\n if (sawSomething && !depth) state.fatArrowAt = pos;\n }\n\n // Parser\n\n var atomicTypes = {\"atom\": true, \"number\": true, \"variable\": true, \"string\": true,\n \"regexp\": true, \"this\": true, \"import\": true, \"jsonld-keyword\": true};\n\n function JSLexical(indented, column, type, align, prev, info) {\n this.indented = indented;\n this.column = column;\n this.type = type;\n this.prev = prev;\n this.info = info;\n if (align != null) this.align = align;\n }\n\n function inScope(state, varname) {\n if (!trackScope) return false\n for (var v = state.localVars; v; v = v.next)\n if (v.name == varname) return true;\n for (var cx = state.context; cx; cx = cx.prev) {\n for (var v = cx.vars; v; v = v.next)\n if (v.name == varname) return true;\n }\n }\n\n function parseJS(state, style, type, content, stream) {\n var cc = state.cc;\n // Communicate our context to the combinators.\n // (Less wasteful than consing up a hundred closures on every call.)\n cx.state = state; cx.stream = stream; cx.marked = null, cx.cc = cc; cx.style = style;\n\n if (!state.lexical.hasOwnProperty(\"align\"))\n state.lexical.align = true;\n\n while(true) {\n var combinator = cc.length ? cc.pop() : jsonMode ? expression : statement;\n if (combinator(type, content)) {\n while(cc.length && cc[cc.length - 1].lex)\n cc.pop()();\n if (cx.marked) return cx.marked;\n if (type == \"variable\" && inScope(state, content)) return \"variable-2\";\n return style;\n }\n }\n }\n\n // Combinator utils\n\n var cx = {state: null, column: null, marked: null, cc: null};\n function pass() {\n for (var i = arguments.length - 1; i >= 0; i--) cx.cc.push(arguments[i]);\n }\n function cont() {\n pass.apply(null, arguments);\n return true;\n }\n function inList(name, list) {\n for (var v = list; v; v = v.next) if (v.name == name) return true\n return false;\n }\n function register(varname) {\n var state = cx.state;\n cx.marked = \"def\";\n if (!trackScope) return\n if (state.context) {\n if (state.lexical.info == \"var\" && state.context && state.context.block) {\n // FIXME function decls are also not block scoped\n var newContext = registerVarScoped(varname, state.context)\n if (newContext != null) {\n state.context = newContext\n return\n }\n } else if (!inList(varname, state.localVars)) {\n state.localVars = new Var(varname, state.localVars)\n return\n }\n }\n // Fall through means this is global\n if (parserConfig.globalVars && !inList(varname, state.globalVars))\n state.globalVars = new Var(varname, state.globalVars)\n }\n function registerVarScoped(varname, context) {\n if (!context) {\n return null\n } else if (context.block) {\n var inner = registerVarScoped(varname, context.prev)\n if (!inner) return null\n if (inner == context.prev) return context\n return new Context(inner, context.vars, true)\n } else if (inList(varname, context.vars)) {\n return context\n } else {\n return new Context(context.prev, new Var(varname, context.vars), false)\n }\n }\n\n function isModifier(name) {\n return name == \"public\" || name == \"private\" || name == \"protected\" || name == \"abstract\" || name == \"readonly\"\n }\n\n // Combinators\n\n function Context(prev, vars, block) { this.prev = prev; this.vars = vars; this.block = block }\n function Var(name, next) { this.name = name; this.next = next }\n\n var defaultVars = new Var(\"this\", new Var(\"arguments\", null))\n function pushcontext() {\n cx.state.context = new Context(cx.state.context, cx.state.localVars, false)\n cx.state.localVars = defaultVars\n }\n function pushblockcontext() {\n cx.state.context = new Context(cx.state.context, cx.state.localVars, true)\n cx.state.localVars = null\n }\n pushcontext.lex = pushblockcontext.lex = true\n function popcontext() {\n cx.state.localVars = cx.state.context.vars\n cx.state.context = cx.state.context.prev\n }\n popcontext.lex = true\n function pushlex(type, info) {\n var result = function() {\n var state = cx.state, indent = state.indented;\n if (state.lexical.type == \"stat\") indent = state.lexical.indented;\n else for (var outer = state.lexical; outer && outer.type == \")\" && outer.align; outer = outer.prev)\n indent = outer.indented;\n state.lexical = new JSLexical(indent, cx.stream.column(), type, null, state.lexical, info);\n };\n result.lex = true;\n return result;\n }\n function poplex() {\n var state = cx.state;\n if (state.lexical.prev) {\n if (state.lexical.type == \")\")\n state.indented = state.lexical.indented;\n state.lexical = state.lexical.prev;\n }\n }\n poplex.lex = true;\n\n function expect(wanted) {\n function exp(type) {\n if (type == wanted) return cont();\n else if (wanted == \";\" || type == \"}\" || type == \")\" || type == \"]\") return pass();\n else return cont(exp);\n };\n return exp;\n }\n\n function statement(type, value) {\n if (type == \"var\") return cont(pushlex(\"vardef\", value), vardef, expect(\";\"), poplex);\n if (type == \"keyword a\") return cont(pushlex(\"form\"), parenExpr, statement, poplex);\n if (type == \"keyword b\") return cont(pushlex(\"form\"), statement, poplex);\n if (type == \"keyword d\") return cx.stream.match(/^\\s*$/, false) ? cont() : cont(pushlex(\"stat\"), maybeexpression, expect(\";\"), poplex);\n if (type == \"debugger\") return cont(expect(\";\"));\n if (type == \"{\") return cont(pushlex(\"}\"), pushblockcontext, block, poplex, popcontext);\n if (type == \";\") return cont();\n if (type == \"if\") {\n if (cx.state.lexical.info == \"else\" && cx.state.cc[cx.state.cc.length - 1] == poplex)\n cx.state.cc.pop()();\n return cont(pushlex(\"form\"), parenExpr, statement, poplex, maybeelse);\n }\n if (type == \"function\") return cont(functiondef);\n if (type == \"for\") return cont(pushlex(\"form\"), pushblockcontext, forspec, statement, popcontext, poplex);\n if (type == \"class\" || (isTS && value == \"interface\")) {\n cx.marked = \"keyword\"\n return cont(pushlex(\"form\", type == \"class\" ? type : value), className, poplex)\n }\n if (type == \"variable\") {\n if (isTS && value == \"declare\") {\n cx.marked = \"keyword\"\n return cont(statement)\n } else if (isTS && (value == \"module\" || value == \"enum\" || value == \"type\") && cx.stream.match(/^\\s*\\w/, false)) {\n cx.marked = \"keyword\"\n if (value == \"enum\") return cont(enumdef);\n else if (value == \"type\") return cont(typename, expect(\"operator\"), typeexpr, expect(\";\"));\n else return cont(pushlex(\"form\"), pattern, expect(\"{\"), pushlex(\"}\"), block, poplex, poplex)\n } else if (isTS && value == \"namespace\") {\n cx.marked = \"keyword\"\n return cont(pushlex(\"form\"), expression, statement, poplex)\n } else if (isTS && value == \"abstract\") {\n cx.marked = \"keyword\"\n return cont(statement)\n } else {\n return cont(pushlex(\"stat\"), maybelabel);\n }\n }\n if (type == \"switch\") return cont(pushlex(\"form\"), parenExpr, expect(\"{\"), pushlex(\"}\", \"switch\"), pushblockcontext,\n block, poplex, poplex, popcontext);\n if (type == \"case\") return cont(expression, expect(\":\"));\n if (type == \"default\") return cont(expect(\":\"));\n if (type == \"catch\") return cont(pushlex(\"form\"), pushcontext, maybeCatchBinding, statement, poplex, popcontext);\n if (type == \"export\") return cont(pushlex(\"stat\"), afterExport, poplex);\n if (type == \"import\") return cont(pushlex(\"stat\"), afterImport, poplex);\n if (type == \"async\") return cont(statement)\n if (value == \"@\") return cont(expression, statement)\n return pass(pushlex(\"stat\"), expression, expect(\";\"), poplex);\n }\n function maybeCatchBinding(type) {\n if (type == \"(\") return cont(funarg, expect(\")\"))\n }\n function expression(type, value) {\n return expressionInner(type, value, false);\n }\n function expressionNoComma(type, value) {\n return expressionInner(type, value, true);\n }\n function parenExpr(type) {\n if (type != \"(\") return pass()\n return cont(pushlex(\")\"), maybeexpression, expect(\")\"), poplex)\n }\n function expressionInner(type, value, noComma) {\n if (cx.state.fatArrowAt == cx.stream.start) {\n var body = noComma ? arrowBodyNoComma : arrowBody;\n if (type == \"(\") return cont(pushcontext, pushlex(\")\"), commasep(funarg, \")\"), poplex, expect(\"=>\"), body, popcontext);\n else if (type == \"variable\") return pass(pushcontext, pattern, expect(\"=>\"), body, popcontext);\n }\n\n var maybeop = noComma ? maybeoperatorNoComma : maybeoperatorComma;\n if (atomicTypes.hasOwnProperty(type)) return cont(maybeop);\n if (type == \"function\") return cont(functiondef, maybeop);\n if (type == \"class\" || (isTS && value == \"interface\")) { cx.marked = \"keyword\"; return cont(pushlex(\"form\"), classExpression, poplex); }\n if (type == \"keyword c\" || type == \"async\") return cont(noComma ? expressionNoComma : expression);\n if (type == \"(\") return cont(pushlex(\")\"), maybeexpression, expect(\")\"), poplex, maybeop);\n if (type == \"operator\" || type == \"spread\") return cont(noComma ? expressionNoComma : expression);\n if (type == \"[\") return cont(pushlex(\"]\"), arrayLiteral, poplex, maybeop);\n if (type == \"{\") return contCommasep(objprop, \"}\", null, maybeop);\n if (type == \"quasi\") return pass(quasi, maybeop);\n if (type == \"new\") return cont(maybeTarget(noComma));\n return cont();\n }\n function maybeexpression(type) {\n if (type.match(/[;\\}\\)\\],]/)) return pass();\n return pass(expression);\n }\n\n function maybeoperatorComma(type, value) {\n if (type == \",\") return cont(maybeexpression);\n return maybeoperatorNoComma(type, value, false);\n }\n function maybeoperatorNoComma(type, value, noComma) {\n var me = noComma == false ? maybeoperatorComma : maybeoperatorNoComma;\n var expr = noComma == false ? expression : expressionNoComma;\n if (type == \"=>\") return cont(pushcontext, noComma ? arrowBodyNoComma : arrowBody, popcontext);\n if (type == \"operator\") {\n if (/\\+\\+|--/.test(value) || isTS && value == \"!\") return cont(me);\n if (isTS && value == \"<\" && cx.stream.match(/^([^<>]|<[^<>]*>)*>\\s*\\(/, false))\n return cont(pushlex(\">\"), commasep(typeexpr, \">\"), poplex, me);\n if (value == \"?\") return cont(expression, expect(\":\"), expr);\n return cont(expr);\n }\n if (type == \"quasi\") { return pass(quasi, me); }\n if (type == \";\") return;\n if (type == \"(\") return contCommasep(expressionNoComma, \")\", \"call\", me);\n if (type == \".\") return cont(property, me);\n if (type == \"[\") return cont(pushlex(\"]\"), maybeexpression, expect(\"]\"), poplex, me);\n if (isTS && value == \"as\") { cx.marked = \"keyword\"; return cont(typeexpr, me) }\n if (type == \"regexp\") {\n cx.state.lastType = cx.marked = \"operator\"\n cx.stream.backUp(cx.stream.pos - cx.stream.start - 1)\n return cont(expr)\n }\n }\n function quasi(type, value) {\n if (type != \"quasi\") return pass();\n if (value.slice(value.length - 2) != \"${\") return cont(quasi);\n return cont(maybeexpression, continueQuasi);\n }\n function continueQuasi(type) {\n if (type == \"}\") {\n cx.marked = \"string-2\";\n cx.state.tokenize = tokenQuasi;\n return cont(quasi);\n }\n }\n function arrowBody(type) {\n findFatArrow(cx.stream, cx.state);\n return pass(type == \"{\" ? statement : expression);\n }\n function arrowBodyNoComma(type) {\n findFatArrow(cx.stream, cx.state);\n return pass(type == \"{\" ? statement : expressionNoComma);\n }\n function maybeTarget(noComma) {\n return function(type) {\n if (type == \".\") return cont(noComma ? targetNoComma : target);\n else if (type == \"variable\" && isTS) return cont(maybeTypeArgs, noComma ? maybeoperatorNoComma : maybeoperatorComma)\n else return pass(noComma ? expressionNoComma : expression);\n };\n }\n function target(_, value) {\n if (value == \"target\") { cx.marked = \"keyword\"; return cont(maybeoperatorComma); }\n }\n function targetNoComma(_, value) {\n if (value == \"target\") { cx.marked = \"keyword\"; return cont(maybeoperatorNoComma); }\n }\n function maybelabel(type) {\n if (type == \":\") return cont(poplex, statement);\n return pass(maybeoperatorComma, expect(\";\"), poplex);\n }\n function property(type) {\n if (type == \"variable\") {cx.marked = \"property\"; return cont();}\n }\n function objprop(type, value) {\n if (type == \"async\") {\n cx.marked = \"property\";\n return cont(objprop);\n } else if (type == \"variable\" || cx.style == \"keyword\") {\n cx.marked = \"property\";\n if (value == \"get\" || value == \"set\") return cont(getterSetter);\n var m // Work around fat-arrow-detection complication for detecting typescript typed arrow params\n if (isTS && cx.state.fatArrowAt == cx.stream.start && (m = cx.stream.match(/^\\s*:\\s*/, false)))\n cx.state.fatArrowAt = cx.stream.pos + m[0].length\n return cont(afterprop);\n } else if (type == \"number\" || type == \"string\") {\n cx.marked = jsonldMode ? \"property\" : (cx.style + \" property\");\n return cont(afterprop);\n } else if (type == \"jsonld-keyword\") {\n return cont(afterprop);\n } else if (isTS && isModifier(value)) {\n cx.marked = \"keyword\"\n return cont(objprop)\n } else if (type == \"[\") {\n return cont(expression, maybetype, expect(\"]\"), afterprop);\n } else if (type == \"spread\") {\n return cont(expressionNoComma, afterprop);\n } else if (value == \"*\") {\n cx.marked = \"keyword\";\n return cont(objprop);\n } else if (type == \":\") {\n return pass(afterprop)\n }\n }\n function getterSetter(type) {\n if (type != \"variable\") return pass(afterprop);\n cx.marked = \"property\";\n return cont(functiondef);\n }\n function afterprop(type) {\n if (type == \":\") return cont(expressionNoComma);\n if (type == \"(\") return pass(functiondef);\n }\n function commasep(what, end, sep) {\n function proceed(type, value) {\n if (sep ? sep.indexOf(type) > -1 : type == \",\") {\n var lex = cx.state.lexical;\n if (lex.info == \"call\") lex.pos = (lex.pos || 0) + 1;\n return cont(function(type, value) {\n if (type == end || value == end) return pass()\n return pass(what)\n }, proceed);\n }\n if (type == end || value == end) return cont();\n if (sep && sep.indexOf(\";\") > -1) return pass(what)\n return cont(expect(end));\n }\n return function(type, value) {\n if (type == end || value == end) return cont();\n return pass(what, proceed);\n };\n }\n function contCommasep(what, end, info) {\n for (var i = 3; i < arguments.length; i++)\n cx.cc.push(arguments[i]);\n return cont(pushlex(end, info), commasep(what, end), poplex);\n }\n function block(type) {\n if (type == \"}\") return cont();\n return pass(statement, block);\n }\n function maybetype(type, value) {\n if (isTS) {\n if (type == \":\") return cont(typeexpr);\n if (value == \"?\") return cont(maybetype);\n }\n }\n function maybetypeOrIn(type, value) {\n if (isTS && (type == \":\" || value == \"in\")) return cont(typeexpr)\n }\n function mayberettype(type) {\n if (isTS && type == \":\") {\n if (cx.stream.match(/^\\s*\\w+\\s+is\\b/, false)) return cont(expression, isKW, typeexpr)\n else return cont(typeexpr)\n }\n }\n function isKW(_, value) {\n if (value == \"is\") {\n cx.marked = \"keyword\"\n return cont()\n }\n }\n function typeexpr(type, value) {\n if (value == \"keyof\" || value == \"typeof\" || value == \"infer\" || value == \"readonly\") {\n cx.marked = \"keyword\"\n return cont(value == \"typeof\" ? expressionNoComma : typeexpr)\n }\n if (type == \"variable\" || value == \"void\") {\n cx.marked = \"type\"\n return cont(afterType)\n }\n if (value == \"|\" || value == \"&\") return cont(typeexpr)\n if (type == \"string\" || type == \"number\" || type == \"atom\") return cont(afterType);\n if (type == \"[\") return cont(pushlex(\"]\"), commasep(typeexpr, \"]\", \",\"), poplex, afterType)\n if (type == \"{\") return cont(pushlex(\"}\"), typeprops, poplex, afterType)\n if (type == \"(\") return cont(commasep(typearg, \")\"), maybeReturnType, afterType)\n if (type == \"<\") return cont(commasep(typeexpr, \">\"), typeexpr)\n if (type == \"quasi\") { return pass(quasiType, afterType); }\n }\n function maybeReturnType(type) {\n if (type == \"=>\") return cont(typeexpr)\n }\n function typeprops(type) {\n if (type.match(/[\\}\\)\\]]/)) return cont()\n if (type == \",\" || type == \";\") return cont(typeprops)\n return pass(typeprop, typeprops)\n }\n function typeprop(type, value) {\n if (type == \"variable\" || cx.style == \"keyword\") {\n cx.marked = \"property\"\n return cont(typeprop)\n } else if (value == \"?\" || type == \"number\" || type == \"string\") {\n return cont(typeprop)\n } else if (type == \":\") {\n return cont(typeexpr)\n } else if (type == \"[\") {\n return cont(expect(\"variable\"), maybetypeOrIn, expect(\"]\"), typeprop)\n } else if (type == \"(\") {\n return pass(functiondecl, typeprop)\n } else if (!type.match(/[;\\}\\)\\],]/)) {\n return cont()\n }\n }\n function quasiType(type, value) {\n if (type != \"quasi\") return pass();\n if (value.slice(value.length - 2) != \"${\") return cont(quasiType);\n return cont(typeexpr, continueQuasiType);\n }\n function continueQuasiType(type) {\n if (type == \"}\") {\n cx.marked = \"string-2\";\n cx.state.tokenize = tokenQuasi;\n return cont(quasiType);\n }\n }\n function typearg(type, value) {\n if (type == \"variable\" && cx.stream.match(/^\\s*[?:]/, false) || value == \"?\") return cont(typearg)\n if (type == \":\") return cont(typeexpr)\n if (type == \"spread\") return cont(typearg)\n return pass(typeexpr)\n }\n function afterType(type, value) {\n if (value == \"<\") return cont(pushlex(\">\"), commasep(typeexpr, \">\"), poplex, afterType)\n if (value == \"|\" || type == \".\" || value == \"&\") return cont(typeexpr)\n if (type == \"[\") return cont(typeexpr, expect(\"]\"), afterType)\n if (value == \"extends\" || value == \"implements\") { cx.marked = \"keyword\"; return cont(typeexpr) }\n if (value == \"?\") return cont(typeexpr, expect(\":\"), typeexpr)\n }\n function maybeTypeArgs(_, value) {\n if (value == \"<\") return cont(pushlex(\">\"), commasep(typeexpr, \">\"), poplex, afterType)\n }\n function typeparam() {\n return pass(typeexpr, maybeTypeDefault)\n }\n function maybeTypeDefault(_, value) {\n if (value == \"=\") return cont(typeexpr)\n }\n function vardef(_, value) {\n if (value == \"enum\") {cx.marked = \"keyword\"; return cont(enumdef)}\n return pass(pattern, maybetype, maybeAssign, vardefCont);\n }\n function pattern(type, value) {\n if (isTS && isModifier(value)) { cx.marked = \"keyword\"; return cont(pattern) }\n if (type == \"variable\") { register(value); return cont(); }\n if (type == \"spread\") return cont(pattern);\n if (type == \"[\") return contCommasep(eltpattern, \"]\");\n if (type == \"{\") return contCommasep(proppattern, \"}\");\n }\n function proppattern(type, value) {\n if (type == \"variable\" && !cx.stream.match(/^\\s*:/, false)) {\n register(value);\n return cont(maybeAssign);\n }\n if (type == \"variable\") cx.marked = \"property\";\n if (type == \"spread\") return cont(pattern);\n if (type == \"}\") return pass();\n if (type == \"[\") return cont(expression, expect(']'), expect(':'), proppattern);\n return cont(expect(\":\"), pattern, maybeAssign);\n }\n function eltpattern() {\n return pass(pattern, maybeAssign)\n }\n function maybeAssign(_type, value) {\n if (value == \"=\") return cont(expressionNoComma);\n }\n function vardefCont(type) {\n if (type == \",\") return cont(vardef);\n }\n function maybeelse(type, value) {\n if (type == \"keyword b\" && value == \"else\") return cont(pushlex(\"form\", \"else\"), statement, poplex);\n }\n function forspec(type, value) {\n if (value == \"await\") return cont(forspec);\n if (type == \"(\") return cont(pushlex(\")\"), forspec1, poplex);\n }\n function forspec1(type) {\n if (type == \"var\") return cont(vardef, forspec2);\n if (type == \"variable\") return cont(forspec2);\n return pass(forspec2)\n }\n function forspec2(type, value) {\n if (type == \")\") return cont()\n if (type == \";\") return cont(forspec2)\n if (value == \"in\" || value == \"of\") { cx.marked = \"keyword\"; return cont(expression, forspec2) }\n return pass(expression, forspec2)\n }\n function functiondef(type, value) {\n if (value == \"*\") {cx.marked = \"keyword\"; return cont(functiondef);}\n if (type == \"variable\") {register(value); return cont(functiondef);}\n if (type == \"(\") return cont(pushcontext, pushlex(\")\"), commasep(funarg, \")\"), poplex, mayberettype, statement, popcontext);\n if (isTS && value == \"<\") return cont(pushlex(\">\"), commasep(typeparam, \">\"), poplex, functiondef)\n }\n function functiondecl(type, value) {\n if (value == \"*\") {cx.marked = \"keyword\"; return cont(functiondecl);}\n if (type == \"variable\") {register(value); return cont(functiondecl);}\n if (type == \"(\") return cont(pushcontext, pushlex(\")\"), commasep(funarg, \")\"), poplex, mayberettype, popcontext);\n if (isTS && value == \"<\") return cont(pushlex(\">\"), commasep(typeparam, \">\"), poplex, functiondecl)\n }\n function typename(type, value) {\n if (type == \"keyword\" || type == \"variable\") {\n cx.marked = \"type\"\n return cont(typename)\n } else if (value == \"<\") {\n return cont(pushlex(\">\"), commasep(typeparam, \">\"), poplex)\n }\n }\n function funarg(type, value) {\n if (value == \"@\") cont(expression, funarg)\n if (type == \"spread\") return cont(funarg);\n if (isTS && isModifier(value)) { cx.marked = \"keyword\"; return cont(funarg); }\n if (isTS && type == \"this\") return cont(maybetype, maybeAssign)\n return pass(pattern, maybetype, maybeAssign);\n }\n function classExpression(type, value) {\n // Class expressions may have an optional name.\n if (type == \"variable\") return className(type, value);\n return classNameAfter(type, value);\n }\n function className(type, value) {\n if (type == \"variable\") {register(value); return cont(classNameAfter);}\n }\n function classNameAfter(type, value) {\n if (value == \"<\") return cont(pushlex(\">\"), commasep(typeparam, \">\"), poplex, classNameAfter)\n if (value == \"extends\" || value == \"implements\" || (isTS && type == \",\")) {\n if (value == \"implements\") cx.marked = \"keyword\";\n return cont(isTS ? typeexpr : expression, classNameAfter);\n }\n if (type == \"{\") return cont(pushlex(\"}\"), classBody, poplex);\n }\n function classBody(type, value) {\n if (type == \"async\" ||\n (type == \"variable\" &&\n (value == \"static\" || value == \"get\" || value == \"set\" || (isTS && isModifier(value))) &&\n cx.stream.match(/^\\s+#?[\\w$\\xa1-\\uffff]/, false))) {\n cx.marked = \"keyword\";\n return cont(classBody);\n }\n if (type == \"variable\" || cx.style == \"keyword\") {\n cx.marked = \"property\";\n return cont(classfield, classBody);\n }\n if (type == \"number\" || type == \"string\") return cont(classfield, classBody);\n if (type == \"[\")\n return cont(expression, maybetype, expect(\"]\"), classfield, classBody)\n if (value == \"*\") {\n cx.marked = \"keyword\";\n return cont(classBody);\n }\n if (isTS && type == \"(\") return pass(functiondecl, classBody)\n if (type == \";\" || type == \",\") return cont(classBody);\n if (type == \"}\") return cont();\n if (value == \"@\") return cont(expression, classBody)\n }\n function classfield(type, value) {\n if (value == \"!\") return cont(classfield)\n if (value == \"?\") return cont(classfield)\n if (type == \":\") return cont(typeexpr, maybeAssign)\n if (value == \"=\") return cont(expressionNoComma)\n var context = cx.state.lexical.prev, isInterface = context && context.info == \"interface\"\n return pass(isInterface ? functiondecl : functiondef)\n }\n function afterExport(type, value) {\n if (value == \"*\") { cx.marked = \"keyword\"; return cont(maybeFrom, expect(\";\")); }\n if (value == \"default\") { cx.marked = \"keyword\"; return cont(expression, expect(\";\")); }\n if (type == \"{\") return cont(commasep(exportField, \"}\"), maybeFrom, expect(\";\"));\n return pass(statement);\n }\n function exportField(type, value) {\n if (value == \"as\") { cx.marked = \"keyword\"; return cont(expect(\"variable\")); }\n if (type == \"variable\") return pass(expressionNoComma, exportField);\n }\n function afterImport(type) {\n if (type == \"string\") return cont();\n if (type == \"(\") return pass(expression);\n if (type == \".\") return pass(maybeoperatorComma);\n return pass(importSpec, maybeMoreImports, maybeFrom);\n }\n function importSpec(type, value) {\n if (type == \"{\") return contCommasep(importSpec, \"}\");\n if (type == \"variable\") register(value);\n if (value == \"*\") cx.marked = \"keyword\";\n return cont(maybeAs);\n }\n function maybeMoreImports(type) {\n if (type == \",\") return cont(importSpec, maybeMoreImports)\n }\n function maybeAs(_type, value) {\n if (value == \"as\") { cx.marked = \"keyword\"; return cont(importSpec); }\n }\n function maybeFrom(_type, value) {\n if (value == \"from\") { cx.marked = \"keyword\"; return cont(expression); }\n }\n function arrayLiteral(type) {\n if (type == \"]\") return cont();\n return pass(commasep(expressionNoComma, \"]\"));\n }\n function enumdef() {\n return pass(pushlex(\"form\"), pattern, expect(\"{\"), pushlex(\"}\"), commasep(enummember, \"}\"), poplex, poplex)\n }\n function enummember() {\n return pass(pattern, maybeAssign);\n }\n\n function isContinuedStatement(state, textAfter) {\n return state.lastType == \"operator\" || state.lastType == \",\" ||\n isOperatorChar.test(textAfter.charAt(0)) ||\n /[,.]/.test(textAfter.charAt(0));\n }\n\n function expressionAllowed(stream, state, backUp) {\n return state.tokenize == tokenBase &&\n /^(?:operator|sof|keyword [bcd]|case|new|export|default|spread|[\\[{}\\(,;:]|=>)$/.test(state.lastType) ||\n (state.lastType == \"quasi\" && /\\{\\s*$/.test(stream.string.slice(0, stream.pos - (backUp || 0))))\n }\n\n // Interface\n\n return {\n startState: function(basecolumn) {\n var state = {\n tokenize: tokenBase,\n lastType: \"sof\",\n cc: [],\n lexical: new JSLexical((basecolumn || 0) - indentUnit, 0, \"block\", false),\n localVars: parserConfig.localVars,\n context: parserConfig.localVars && new Context(null, null, false),\n indented: basecolumn || 0\n };\n if (parserConfig.globalVars && typeof parserConfig.globalVars == \"object\")\n state.globalVars = parserConfig.globalVars;\n return state;\n },\n\n token: function(stream, state) {\n if (stream.sol()) {\n if (!state.lexical.hasOwnProperty(\"align\"))\n state.lexical.align = false;\n state.indented = stream.indentation();\n findFatArrow(stream, state);\n }\n if (state.tokenize != tokenComment && stream.eatSpace()) return null;\n var style = state.tokenize(stream, state);\n if (type == \"comment\") return style;\n state.lastType = type == \"operator\" && (content == \"++\" || content == \"--\") ? \"incdec\" : type;\n return parseJS(state, style, type, content, stream);\n },\n\n indent: function(state, textAfter) {\n if (state.tokenize == tokenComment || state.tokenize == tokenQuasi) return CodeMirror.Pass;\n if (state.tokenize != tokenBase) return 0;\n var firstChar = textAfter && textAfter.charAt(0), lexical = state.lexical, top\n // Kludge to prevent 'maybelse' from blocking lexical scope pops\n if (!/^\\s*else\\b/.test(textAfter)) for (var i = state.cc.length - 1; i >= 0; --i) {\n var c = state.cc[i];\n if (c == poplex) lexical = lexical.prev;\n else if (c != maybeelse && c != popcontext) break;\n }\n while ((lexical.type == \"stat\" || lexical.type == \"form\") &&\n (firstChar == \"}\" || ((top = state.cc[state.cc.length - 1]) &&\n (top == maybeoperatorComma || top == maybeoperatorNoComma) &&\n !/^[,\\.=+\\-*:?[\\(]/.test(textAfter))))\n lexical = lexical.prev;\n if (statementIndent && lexical.type == \")\" && lexical.prev.type == \"stat\")\n lexical = lexical.prev;\n var type = lexical.type, closing = firstChar == type;\n\n if (type == \"vardef\") return lexical.indented + (state.lastType == \"operator\" || state.lastType == \",\" ? lexical.info.length + 1 : 0);\n else if (type == \"form\" && firstChar == \"{\") return lexical.indented;\n else if (type == \"form\") return lexical.indented + indentUnit;\n else if (type == \"stat\")\n return lexical.indented + (isContinuedStatement(state, textAfter) ? statementIndent || indentUnit : 0);\n else if (lexical.info == \"switch\" && !closing && parserConfig.doubleIndentSwitch != false)\n return lexical.indented + (/^(?:case|default)\\b/.test(textAfter) ? indentUnit : 2 * indentUnit);\n else if (lexical.align) return lexical.column + (closing ? 0 : 1);\n else return lexical.indented + (closing ? 0 : indentUnit);\n },\n\n electricInput: /^\\s*(?:case .*?:|default:|\\{|\\})$/,\n blockCommentStart: jsonMode ? null : \"/*\",\n blockCommentEnd: jsonMode ? null : \"*/\",\n blockCommentContinue: jsonMode ? null : \" * \",\n lineComment: jsonMode ? null : \"//\",\n fold: \"brace\",\n closeBrackets: \"()[]{}''\\\"\\\"``\",\n\n helperType: jsonMode ? \"json\" : \"javascript\",\n jsonldMode: jsonldMode,\n jsonMode: jsonMode,\n\n expressionAllowed: expressionAllowed,\n\n skipExpression: function(state) {\n parseJS(state, \"atom\", \"atom\", \"true\", new CodeMirror.StringStream(\"\", 2, null))\n }\n };\n});\n\nCodeMirror.registerHelper(\"wordChars\", \"javascript\", /[\\w$]/);\n\nCodeMirror.defineMIME(\"text/javascript\", \"javascript\");\nCodeMirror.defineMIME(\"text/ecmascript\", \"javascript\");\nCodeMirror.defineMIME(\"application/javascript\", \"javascript\");\nCodeMirror.defineMIME(\"application/x-javascript\", \"javascript\");\nCodeMirror.defineMIME(\"application/ecmascript\", \"javascript\");\nCodeMirror.defineMIME(\"application/json\", { name: \"javascript\", json: true });\nCodeMirror.defineMIME(\"application/x-json\", { name: \"javascript\", json: true });\nCodeMirror.defineMIME(\"application/manifest+json\", { name: \"javascript\", json: true })\nCodeMirror.defineMIME(\"application/ld+json\", { name: \"javascript\", jsonld: true });\nCodeMirror.defineMIME(\"text/typescript\", { name: \"javascript\", typescript: true });\nCodeMirror.defineMIME(\"application/typescript\", { name: \"javascript\", typescript: true });\n\n});\n", "// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/5/LICENSE\n\n(function(mod) {\n if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n mod(require(\"../../lib/codemirror\"), require(\"../xml/xml\"), require(\"../javascript/javascript\"), require(\"../css/css\"));\n else if (typeof define == \"function\" && define.amd) // AMD\n define([\"../../lib/codemirror\", \"../xml/xml\", \"../javascript/javascript\", \"../css/css\"], mod);\n else // Plain browser env\n mod(CodeMirror);\n})(function(CodeMirror) {\n \"use strict\";\n\n var defaultTags = {\n script: [\n [\"lang\", /(javascript|babel)/i, \"javascript\"],\n [\"type\", /^(?:text|application)\\/(?:x-)?(?:java|ecma)script$|^module$|^$/i, \"javascript\"],\n [\"type\", /./, \"text/plain\"],\n [null, null, \"javascript\"]\n ],\n style: [\n [\"lang\", /^css$/i, \"css\"],\n [\"type\", /^(text\\/)?(x-)?(stylesheet|css)$/i, \"css\"],\n [\"type\", /./, \"text/plain\"],\n [null, null, \"css\"]\n ]\n };\n\n function maybeBackup(stream, pat, style) {\n var cur = stream.current(), close = cur.search(pat);\n if (close > -1) {\n stream.backUp(cur.length - close);\n } else if (cur.match(/<\\/?$/)) {\n stream.backUp(cur.length);\n if (!stream.match(pat, false)) stream.match(cur);\n }\n return style;\n }\n\n var attrRegexpCache = {};\n function getAttrRegexp(attr) {\n var regexp = attrRegexpCache[attr];\n if (regexp) return regexp;\n return attrRegexpCache[attr] = new RegExp(\"\\\\s+\" + attr + \"\\\\s*=\\\\s*('|\\\")?([^'\\\"]+)('|\\\")?\\\\s*\");\n }\n\n function getAttrValue(text, attr) {\n var match = text.match(getAttrRegexp(attr))\n return match ? /^\\s*(.*?)\\s*$/.exec(match[2])[1] : \"\"\n }\n\n function getTagRegexp(tagName, anchored) {\n return new RegExp((anchored ? \"^\" : \"\") + \"<\\/\\\\s*\" + tagName + \"\\\\s*>\", \"i\");\n }\n\n function addTags(from, to) {\n for (var tag in from) {\n var dest = to[tag] || (to[tag] = []);\n var source = from[tag];\n for (var i = source.length - 1; i >= 0; i--)\n dest.unshift(source[i])\n }\n }\n\n function findMatchingMode(tagInfo, tagText) {\n for (var i = 0; i < tagInfo.length; i++) {\n var spec = tagInfo[i];\n if (!spec[0] || spec[1].test(getAttrValue(tagText, spec[0]))) return spec[2];\n }\n }\n\n CodeMirror.defineMode(\"htmlmixed\", function (config, parserConfig) {\n var htmlMode = CodeMirror.getMode(config, {\n name: \"xml\",\n htmlMode: true,\n multilineTagIndentFactor: parserConfig.multilineTagIndentFactor,\n multilineTagIndentPastTag: parserConfig.multilineTagIndentPastTag,\n allowMissingTagName: parserConfig.allowMissingTagName,\n });\n\n var tags = {};\n var configTags = parserConfig && parserConfig.tags, configScript = parserConfig && parserConfig.scriptTypes;\n addTags(defaultTags, tags);\n if (configTags) addTags(configTags, tags);\n if (configScript) for (var i = configScript.length - 1; i >= 0; i--)\n tags.script.unshift([\"type\", configScript[i].matches, configScript[i].mode])\n\n function html(stream, state) {\n var style = htmlMode.token(stream, state.htmlState), tag = /\\btag\\b/.test(style), tagName\n if (tag && !/[<>\\s\\/]/.test(stream.current()) &&\n (tagName = state.htmlState.tagName && state.htmlState.tagName.toLowerCase()) &&\n tags.hasOwnProperty(tagName)) {\n state.inTag = tagName + \" \"\n } else if (state.inTag && tag && />$/.test(stream.current())) {\n var inTag = /^([\\S]+) (.*)/.exec(state.inTag)\n state.inTag = null\n var modeSpec = stream.current() == \">\" && findMatchingMode(tags[inTag[1]], inTag[2])\n var mode = CodeMirror.getMode(config, modeSpec)\n var endTagA = getTagRegexp(inTag[1], true), endTag = getTagRegexp(inTag[1], false);\n state.token = function (stream, state) {\n if (stream.match(endTagA, false)) {\n state.token = html;\n state.localState = state.localMode = null;\n return null;\n }\n return maybeBackup(stream, endTag, state.localMode.token(stream, state.localState));\n };\n state.localMode = mode;\n state.localState = CodeMirror.startState(mode, htmlMode.indent(state.htmlState, \"\", \"\"));\n } else if (state.inTag) {\n state.inTag += stream.current()\n if (stream.eol()) state.inTag += \" \"\n }\n return style;\n };\n\n return {\n startState: function () {\n var state = CodeMirror.startState(htmlMode);\n return {token: html, inTag: null, localMode: null, localState: null, htmlState: state};\n },\n\n copyState: function (state) {\n var local;\n if (state.localState) {\n local = CodeMirror.copyState(state.localMode, state.localState);\n }\n return {token: state.token, inTag: state.inTag,\n localMode: state.localMode, localState: local,\n htmlState: CodeMirror.copyState(htmlMode, state.htmlState)};\n },\n\n token: function (stream, state) {\n return state.token(stream, state);\n },\n\n indent: function (state, textAfter, line) {\n if (!state.localMode || /^\\s*<\\//.test(textAfter))\n return htmlMode.indent(state.htmlState, textAfter, line);\n else if (state.localMode.indent)\n return state.localMode.indent(state.localState, textAfter, line);\n else\n return CodeMirror.Pass;\n },\n\n innerMode: function (state) {\n return {state: state.localState || state.htmlState, mode: state.localMode || htmlMode};\n }\n };\n }, \"xml\", \"javascript\", \"css\");\n\n CodeMirror.defineMIME(\"text/html\", \"htmlmixed\");\n});\n", "// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/5/LICENSE\n\n(function(mod) {\n if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n mod(require(\"../lib/codemirror\"));\n else if (typeof define == \"function\" && define.amd) // AMD\n define([\"../lib/codemirror\"], mod);\n else // Plain browser env\n mod(CodeMirror);\n})(function(CodeMirror) {\n \"use strict\";\n\n CodeMirror.modeInfo = [\n {name: \"APL\", mime: \"text/apl\", mode: \"apl\", ext: [\"dyalog\", \"apl\"]},\n {name: \"PGP\", mimes: [\"application/pgp\", \"application/pgp-encrypted\", \"application/pgp-keys\", \"application/pgp-signature\"], mode: \"asciiarmor\", ext: [\"asc\", \"pgp\", \"sig\"]},\n {name: \"ASN.1\", mime: \"text/x-ttcn-asn\", mode: \"asn.1\", ext: [\"asn\", \"asn1\"]},\n {name: \"Asterisk\", mime: \"text/x-asterisk\", mode: \"asterisk\", file: /^extensions\\.conf$/i},\n {name: \"Brainfuck\", mime: \"text/x-brainfuck\", mode: \"brainfuck\", ext: [\"b\", \"bf\"]},\n {name: \"C\", mime: \"text/x-csrc\", mode: \"clike\", ext: [\"c\", \"h\", \"ino\"]},\n {name: \"C++\", mime: \"text/x-c++src\", mode: \"clike\", ext: [\"cpp\", \"c++\", \"cc\", \"cxx\", \"hpp\", \"h++\", \"hh\", \"hxx\"], alias: [\"cpp\"]},\n {name: \"Cobol\", mime: \"text/x-cobol\", mode: \"cobol\", ext: [\"cob\", \"cpy\", \"cbl\"]},\n {name: \"C#\", mime: \"text/x-csharp\", mode: \"clike\", ext: [\"cs\"], alias: [\"csharp\", \"cs\"]},\n {name: \"Clojure\", mime: \"text/x-clojure\", mode: \"clojure\", ext: [\"clj\", \"cljc\", \"cljx\"]},\n {name: \"ClojureScript\", mime: \"text/x-clojurescript\", mode: \"clojure\", ext: [\"cljs\"]},\n {name: \"Closure Stylesheets (GSS)\", mime: \"text/x-gss\", mode: \"css\", ext: [\"gss\"]},\n {name: \"CMake\", mime: \"text/x-cmake\", mode: \"cmake\", ext: [\"cmake\", \"cmake.in\"], file: /^CMakeLists\\.txt$/},\n {name: \"CoffeeScript\", mimes: [\"application/vnd.coffeescript\", \"text/coffeescript\", \"text/x-coffeescript\"], mode: \"coffeescript\", ext: [\"coffee\"], alias: [\"coffee\", \"coffee-script\"]},\n {name: \"Common Lisp\", mime: \"text/x-common-lisp\", mode: \"commonlisp\", ext: [\"cl\", \"lisp\", \"el\"], alias: [\"lisp\"]},\n {name: \"Cypher\", mime: \"application/x-cypher-query\", mode: \"cypher\", ext: [\"cyp\", \"cypher\"]},\n {name: \"Cython\", mime: \"text/x-cython\", mode: \"python\", ext: [\"pyx\", \"pxd\", \"pxi\"]},\n {name: \"Crystal\", mime: \"text/x-crystal\", mode: \"crystal\", ext: [\"cr\"]},\n {name: \"CSS\", mime: \"text/css\", mode: \"css\", ext: [\"css\"]},\n {name: \"CQL\", mime: \"text/x-cassandra\", mode: \"sql\", ext: [\"cql\"]},\n {name: \"D\", mime: \"text/x-d\", mode: \"d\", ext: [\"d\"]},\n {name: \"Dart\", mimes: [\"application/dart\", \"text/x-dart\"], mode: \"dart\", ext: [\"dart\"]},\n {name: \"diff\", mime: \"text/x-diff\", mode: \"diff\", ext: [\"diff\", \"patch\"]},\n {name: \"Django\", mime: \"text/x-django\", mode: \"django\"},\n {name: \"Dockerfile\", mime: \"text/x-dockerfile\", mode: \"dockerfile\", file: /^Dockerfile$/},\n {name: \"DTD\", mime: \"application/xml-dtd\", mode: \"dtd\", ext: [\"dtd\"]},\n {name: \"Dylan\", mime: \"text/x-dylan\", mode: \"dylan\", ext: [\"dylan\", \"dyl\", \"intr\"]},\n {name: \"EBNF\", mime: \"text/x-ebnf\", mode: \"ebnf\"},\n {name: \"ECL\", mime: \"text/x-ecl\", mode: \"ecl\", ext: [\"ecl\"]},\n {name: \"edn\", mime: \"application/edn\", mode: \"clojure\", ext: [\"edn\"]},\n {name: \"Eiffel\", mime: \"text/x-eiffel\", mode: \"eiffel\", ext: [\"e\"]},\n {name: \"Elm\", mime: \"text/x-elm\", mode: \"elm\", ext: [\"elm\"]},\n {name: \"Embedded JavaScript\", mime: \"application/x-ejs\", mode: \"htmlembedded\", ext: [\"ejs\"]},\n {name: \"Embedded Ruby\", mime: \"application/x-erb\", mode: \"htmlembedded\", ext: [\"erb\"]},\n {name: \"Erlang\", mime: \"text/x-erlang\", mode: \"erlang\", ext: [\"erl\"]},\n {name: \"Esper\", mime: \"text/x-esper\", mode: \"sql\"},\n {name: \"Factor\", mime: \"text/x-factor\", mode: \"factor\", ext: [\"factor\"]},\n {name: \"FCL\", mime: \"text/x-fcl\", mode: \"fcl\"},\n {name: \"Forth\", mime: \"text/x-forth\", mode: \"forth\", ext: [\"forth\", \"fth\", \"4th\"]},\n {name: \"Fortran\", mime: \"text/x-fortran\", mode: \"fortran\", ext: [\"f\", \"for\", \"f77\", \"f90\", \"f95\"]},\n {name: \"F#\", mime: \"text/x-fsharp\", mode: \"mllike\", ext: [\"fs\"], alias: [\"fsharp\"]},\n {name: \"Gas\", mime: \"text/x-gas\", mode: \"gas\", ext: [\"s\"]},\n {name: \"Gherkin\", mime: \"text/x-feature\", mode: \"gherkin\", ext: [\"feature\"]},\n {name: \"GitHub Flavored Markdown\", mime: \"text/x-gfm\", mode: \"gfm\", file: /^(readme|contributing|history)\\.md$/i},\n {name: \"Go\", mime: \"text/x-go\", mode: \"go\", ext: [\"go\"]},\n {name: \"Groovy\", mime: \"text/x-groovy\", mode: \"groovy\", ext: [\"groovy\", \"gradle\"], file: /^Jenkinsfile$/},\n {name: \"HAML\", mime: \"text/x-haml\", mode: \"haml\", ext: [\"haml\"]},\n {name: \"Haskell\", mime: \"text/x-haskell\", mode: \"haskell\", ext: [\"hs\"]},\n {name: \"Haskell (Literate)\", mime: \"text/x-literate-haskell\", mode: \"haskell-literate\", ext: [\"lhs\"]},\n {name: \"Haxe\", mime: \"text/x-haxe\", mode: \"haxe\", ext: [\"hx\"]},\n {name: \"HXML\", mime: \"text/x-hxml\", mode: \"haxe\", ext: [\"hxml\"]},\n {name: \"ASP.NET\", mime: \"application/x-aspx\", mode: \"htmlembedded\", ext: [\"aspx\"], alias: [\"asp\", \"aspx\"]},\n {name: \"HTML\", mime: \"text/html\", mode: \"htmlmixed\", ext: [\"html\", \"htm\", \"handlebars\", \"hbs\"], alias: [\"xhtml\"]},\n {name: \"HTTP\", mime: \"message/http\", mode: \"http\"},\n {name: \"IDL\", mime: \"text/x-idl\", mode: \"idl\", ext: [\"pro\"]},\n {name: \"Pug\", mime: \"text/x-pug\", mode: \"pug\", ext: [\"jade\", \"pug\"], alias: [\"jade\"]},\n {name: \"Java\", mime: \"text/x-java\", mode: \"clike\", ext: [\"java\"]},\n {name: \"Java Server Pages\", mime: \"application/x-jsp\", mode: \"htmlembedded\", ext: [\"jsp\"], alias: [\"jsp\"]},\n {name: \"JavaScript\", mimes: [\"text/javascript\", \"text/ecmascript\", \"application/javascript\", \"application/x-javascript\", \"application/ecmascript\"],\n mode: \"javascript\", ext: [\"js\"], alias: [\"ecmascript\", \"js\", \"node\"]},\n {name: \"JSON\", mimes: [\"application/json\", \"application/x-json\"], mode: \"javascript\", ext: [\"json\", \"map\"], alias: [\"json5\"]},\n {name: \"JSON-LD\", mime: \"application/ld+json\", mode: \"javascript\", ext: [\"jsonld\"], alias: [\"jsonld\"]},\n {name: \"JSX\", mime: \"text/jsx\", mode: \"jsx\", ext: [\"jsx\"]},\n {name: \"Jinja2\", mime: \"text/jinja2\", mode: \"jinja2\", ext: [\"j2\", \"jinja\", \"jinja2\"]},\n {name: \"Julia\", mime: \"text/x-julia\", mode: \"julia\", ext: [\"jl\"], alias: [\"jl\"]},\n {name: \"Kotlin\", mime: \"text/x-kotlin\", mode: \"clike\", ext: [\"kt\"]},\n {name: \"LESS\", mime: \"text/x-less\", mode: \"css\", ext: [\"less\"]},\n {name: \"LiveScript\", mime: \"text/x-livescript\", mode: \"livescript\", ext: [\"ls\"], alias: [\"ls\"]},\n {name: \"Lua\", mime: \"text/x-lua\", mode: \"lua\", ext: [\"lua\"]},\n {name: \"Markdown\", mime: \"text/x-markdown\", mode: \"markdown\", ext: [\"markdown\", \"md\", \"mkd\"]},\n {name: \"mIRC\", mime: \"text/mirc\", mode: \"mirc\"},\n {name: \"MariaDB SQL\", mime: \"text/x-mariadb\", mode: \"sql\"},\n {name: \"Mathematica\", mime: \"text/x-mathematica\", mode: \"mathematica\", ext: [\"m\", \"nb\", \"wl\", \"wls\"]},\n {name: \"Modelica\", mime: \"text/x-modelica\", mode: \"modelica\", ext: [\"mo\"]},\n {name: \"MUMPS\", mime: \"text/x-mumps\", mode: \"mumps\", ext: [\"mps\"]},\n {name: \"MS SQL\", mime: \"text/x-mssql\", mode: \"sql\"},\n {name: \"mbox\", mime: \"application/mbox\", mode: \"mbox\", ext: [\"mbox\"]},\n {name: \"MySQL\", mime: \"text/x-mysql\", mode: \"sql\"},\n {name: \"Nginx\", mime: \"text/x-nginx-conf\", mode: \"nginx\", file: /nginx.*\\.conf$/i},\n {name: \"NSIS\", mime: \"text/x-nsis\", mode: \"nsis\", ext: [\"nsh\", \"nsi\"]},\n {name: \"NTriples\", mimes: [\"application/n-triples\", \"application/n-quads\", \"text/n-triples\"],\n mode: \"ntriples\", ext: [\"nt\", \"nq\"]},\n {name: \"Objective-C\", mime: \"text/x-objectivec\", mode: \"clike\", ext: [\"m\"], alias: [\"objective-c\", \"objc\"]},\n {name: \"Objective-C++\", mime: \"text/x-objectivec++\", mode: \"clike\", ext: [\"mm\"], alias: [\"objective-c++\", \"objc++\"]},\n {name: \"OCaml\", mime: \"text/x-ocaml\", mode: \"mllike\", ext: [\"ml\", \"mli\", \"mll\", \"mly\"]},\n {name: \"Octave\", mime: \"text/x-octave\", mode: \"octave\", ext: [\"m\"]},\n {name: \"Oz\", mime: \"text/x-oz\", mode: \"oz\", ext: [\"oz\"]},\n {name: \"Pascal\", mime: \"text/x-pascal\", mode: \"pascal\", ext: [\"p\", \"pas\"]},\n {name: \"PEG.js\", mime: \"null\", mode: \"pegjs\", ext: [\"jsonld\"]},\n {name: \"Perl\", mime: \"text/x-perl\", mode: \"perl\", ext: [\"pl\", \"pm\"]},\n {name: \"PHP\", mimes: [\"text/x-php\", \"application/x-httpd-php\", \"application/x-httpd-php-open\"], mode: \"php\", ext: [\"php\", \"php3\", \"php4\", \"php5\", \"php7\", \"phtml\"]},\n {name: \"Pig\", mime: \"text/x-pig\", mode: \"pig\", ext: [\"pig\"]},\n {name: \"Plain Text\", mime: \"text/plain\", mode: \"null\", ext: [\"txt\", \"text\", \"conf\", \"def\", \"list\", \"log\"]},\n {name: \"PLSQL\", mime: \"text/x-plsql\", mode: \"sql\", ext: [\"pls\"]},\n {name: \"PostgreSQL\", mime: \"text/x-pgsql\", mode: \"sql\"},\n {name: \"PowerShell\", mime: \"application/x-powershell\", mode: \"powershell\", ext: [\"ps1\", \"psd1\", \"psm1\"]},\n {name: \"Properties files\", mime: \"text/x-properties\", mode: \"properties\", ext: [\"properties\", \"ini\", \"in\"], alias: [\"ini\", \"properties\"]},\n {name: \"ProtoBuf\", mime: \"text/x-protobuf\", mode: \"protobuf\", ext: [\"proto\"]},\n {name: \"Python\", mime: \"text/x-python\", mode: \"python\", ext: [\"BUILD\", \"bzl\", \"py\", \"pyw\"], file: /^(BUCK|BUILD)$/},\n {name: \"Puppet\", mime: \"text/x-puppet\", mode: \"puppet\", ext: [\"pp\"]},\n {name: \"Q\", mime: \"text/x-q\", mode: \"q\", ext: [\"q\"]},\n {name: \"R\", mime: \"text/x-rsrc\", mode: \"r\", ext: [\"r\", \"R\"], alias: [\"rscript\"]},\n {name: \"reStructuredText\", mime: \"text/x-rst\", mode: \"rst\", ext: [\"rst\"], alias: [\"rst\"]},\n {name: \"RPM Changes\", mime: \"text/x-rpm-changes\", mode: \"rpm\"},\n {name: \"RPM Spec\", mime: \"text/x-rpm-spec\", mode: \"rpm\", ext: [\"spec\"]},\n {name: \"Ruby\", mime: \"text/x-ruby\", mode: \"ruby\", ext: [\"rb\"], alias: [\"jruby\", \"macruby\", \"rake\", \"rb\", \"rbx\"]},\n {name: \"Rust\", mime: \"text/x-rustsrc\", mode: \"rust\", ext: [\"rs\"]},\n {name: \"SAS\", mime: \"text/x-sas\", mode: \"sas\", ext: [\"sas\"]},\n {name: \"Sass\", mime: \"text/x-sass\", mode: \"sass\", ext: [\"sass\"]},\n {name: \"Scala\", mime: \"text/x-scala\", mode: \"clike\", ext: [\"scala\"]},\n {name: \"Scheme\", mime: \"text/x-scheme\", mode: \"scheme\", ext: [\"scm\", \"ss\"]},\n {name: \"SCSS\", mime: \"text/x-scss\", mode: \"css\", ext: [\"scss\"]},\n {name: \"Shell\", mimes: [\"text/x-sh\", \"application/x-sh\"], mode: \"shell\", ext: [\"sh\", \"ksh\", \"bash\"], alias: [\"bash\", \"sh\", \"zsh\"], file: /^PKGBUILD$/},\n {name: \"Sieve\", mime: \"application/sieve\", mode: \"sieve\", ext: [\"siv\", \"sieve\"]},\n {name: \"Slim\", mimes: [\"text/x-slim\", \"application/x-slim\"], mode: \"slim\", ext: [\"slim\"]},\n {name: \"Smalltalk\", mime: \"text/x-stsrc\", mode: \"smalltalk\", ext: [\"st\"]},\n {name: \"Smarty\", mime: \"text/x-smarty\", mode: \"smarty\", ext: [\"tpl\"]},\n {name: \"Solr\", mime: \"text/x-solr\", mode: \"solr\"},\n {name: \"SML\", mime: \"text/x-sml\", mode: \"mllike\", ext: [\"sml\", \"sig\", \"fun\", \"smackspec\"]},\n {name: \"Soy\", mime: \"text/x-soy\", mode: \"soy\", ext: [\"soy\"], alias: [\"closure template\"]},\n {name: \"SPARQL\", mime: \"application/sparql-query\", mode: \"sparql\", ext: [\"rq\", \"sparql\"], alias: [\"sparul\"]},\n {name: \"Spreadsheet\", mime: \"text/x-spreadsheet\", mode: \"spreadsheet\", alias: [\"excel\", \"formula\"]},\n {name: \"SQL\", mime: \"text/x-sql\", mode: \"sql\", ext: [\"sql\"]},\n {name: \"SQLite\", mime: \"text/x-sqlite\", mode: \"sql\"},\n {name: \"Squirrel\", mime: \"text/x-squirrel\", mode: \"clike\", ext: [\"nut\"]},\n {name: \"Stylus\", mime: \"text/x-styl\", mode: \"stylus\", ext: [\"styl\"]},\n {name: \"Swift\", mime: \"text/x-swift\", mode: \"swift\", ext: [\"swift\"]},\n {name: \"sTeX\", mime: \"text/x-stex\", mode: \"stex\"},\n {name: \"LaTeX\", mime: \"text/x-latex\", mode: \"stex\", ext: [\"text\", \"ltx\", \"tex\"], alias: [\"tex\"]},\n {name: \"SystemVerilog\", mime: \"text/x-systemverilog\", mode: \"verilog\", ext: [\"v\", \"sv\", \"svh\"]},\n {name: \"Tcl\", mime: \"text/x-tcl\", mode: \"tcl\", ext: [\"tcl\"]},\n {name: \"Textile\", mime: \"text/x-textile\", mode: \"textile\", ext: [\"textile\"]},\n {name: \"TiddlyWiki\", mime: \"text/x-tiddlywiki\", mode: \"tiddlywiki\"},\n {name: \"Tiki wiki\", mime: \"text/tiki\", mode: \"tiki\"},\n {name: \"TOML\", mime: \"text/x-toml\", mode: \"toml\", ext: [\"toml\"]},\n {name: \"Tornado\", mime: \"text/x-tornado\", mode: \"tornado\"},\n {name: \"troff\", mime: \"text/troff\", mode: \"troff\", ext: [\"1\", \"2\", \"3\", \"4\", \"5\", \"6\", \"7\", \"8\", \"9\"]},\n {name: \"TTCN\", mime: \"text/x-ttcn\", mode: \"ttcn\", ext: [\"ttcn\", \"ttcn3\", \"ttcnpp\"]},\n {name: \"TTCN_CFG\", mime: \"text/x-ttcn-cfg\", mode: \"ttcn-cfg\", ext: [\"cfg\"]},\n {name: \"Turtle\", mime: \"text/turtle\", mode: \"turtle\", ext: [\"ttl\"]},\n {name: \"TypeScript\", mime: \"application/typescript\", mode: \"javascript\", ext: [\"ts\"], alias: [\"ts\"]},\n {name: \"TypeScript-JSX\", mime: \"text/typescript-jsx\", mode: \"jsx\", ext: [\"tsx\"], alias: [\"tsx\"]},\n {name: \"Twig\", mime: \"text/x-twig\", mode: \"twig\"},\n {name: \"Web IDL\", mime: \"text/x-webidl\", mode: \"webidl\", ext: [\"webidl\"]},\n {name: \"VB.NET\", mime: \"text/x-vb\", mode: \"vb\", ext: [\"vb\"]},\n {name: \"VBScript\", mime: \"text/vbscript\", mode: \"vbscript\", ext: [\"vbs\"]},\n {name: \"Velocity\", mime: \"text/velocity\", mode: \"velocity\", ext: [\"vtl\"]},\n {name: \"Verilog\", mime: \"text/x-verilog\", mode: \"verilog\", ext: [\"v\"]},\n {name: \"VHDL\", mime: \"text/x-vhdl\", mode: \"vhdl\", ext: [\"vhd\", \"vhdl\"]},\n {name: \"Vue.js Component\", mimes: [\"script/x-vue\", \"text/x-vue\"], mode: \"vue\", ext: [\"vue\"]},\n {name: \"XML\", mimes: [\"application/xml\", \"text/xml\"], mode: \"xml\", ext: [\"xml\", \"xsl\", \"xsd\", \"svg\"], alias: [\"rss\", \"wsdl\", \"xsd\"]},\n {name: \"XQuery\", mime: \"application/xquery\", mode: \"xquery\", ext: [\"xy\", \"xquery\"]},\n {name: \"Yacas\", mime: \"text/x-yacas\", mode: \"yacas\", ext: [\"ys\"]},\n {name: \"YAML\", mimes: [\"text/x-yaml\", \"text/yaml\"], mode: \"yaml\", ext: [\"yaml\", \"yml\"], alias: [\"yml\"]},\n {name: \"Z80\", mime: \"text/x-z80\", mode: \"z80\", ext: [\"z80\"]},\n {name: \"mscgen\", mime: \"text/x-mscgen\", mode: \"mscgen\", ext: [\"mscgen\", \"mscin\", \"msc\"]},\n {name: \"xu\", mime: \"text/x-xu\", mode: \"mscgen\", ext: [\"xu\"]},\n {name: \"msgenny\", mime: \"text/x-msgenny\", mode: \"mscgen\", ext: [\"msgenny\"]},\n {name: \"WebAssembly\", mime: \"text/webassembly\", mode: \"wast\", ext: [\"wat\", \"wast\"]},\n ];\n // Ensure all modes have a mime property for backwards compatibility\n for (var i = 0; i < CodeMirror.modeInfo.length; i++) {\n var info = CodeMirror.modeInfo[i];\n if (info.mimes) info.mime = info.mimes[0];\n }\n\n CodeMirror.findModeByMIME = function(mime) {\n mime = mime.toLowerCase();\n for (var i = 0; i < CodeMirror.modeInfo.length; i++) {\n var info = CodeMirror.modeInfo[i];\n if (info.mime == mime) return info;\n if (info.mimes) for (var j = 0; j < info.mimes.length; j++)\n if (info.mimes[j] == mime) return info;\n }\n if (/\\+xml$/.test(mime)) return CodeMirror.findModeByMIME(\"application/xml\")\n if (/\\+json$/.test(mime)) return CodeMirror.findModeByMIME(\"application/json\")\n };\n\n CodeMirror.findModeByExtension = function(ext) {\n ext = ext.toLowerCase();\n for (var i = 0; i < CodeMirror.modeInfo.length; i++) {\n var info = CodeMirror.modeInfo[i];\n if (info.ext) for (var j = 0; j < info.ext.length; j++)\n if (info.ext[j] == ext) return info;\n }\n };\n\n CodeMirror.findModeByFileName = function(filename) {\n for (var i = 0; i < CodeMirror.modeInfo.length; i++) {\n var info = CodeMirror.modeInfo[i];\n if (info.file && info.file.test(filename)) return info;\n }\n var dot = filename.lastIndexOf(\".\");\n var ext = dot > -1 && filename.substring(dot + 1, filename.length);\n if (ext) return CodeMirror.findModeByExtension(ext);\n };\n\n CodeMirror.findModeByName = function(name) {\n name = name.toLowerCase();\n for (var i = 0; i < CodeMirror.modeInfo.length; i++) {\n var info = CodeMirror.modeInfo[i];\n if (info.name.toLowerCase() == name) return info;\n if (info.alias) for (var j = 0; j < info.alias.length; j++)\n if (info.alias[j].toLowerCase() == name) return info;\n }\n };\n});\n", "// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/5/LICENSE\n\n(function(mod) {\n if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n mod(require(\"../../lib/codemirror\"), require(\"../xml/xml\"), require(\"../meta\"));\n else if (typeof define == \"function\" && define.amd) // AMD\n define([\"../../lib/codemirror\", \"../xml/xml\", \"../meta\"], mod);\n else // Plain browser env\n mod(CodeMirror);\n})(function(CodeMirror) {\n\"use strict\";\n\nCodeMirror.defineMode(\"markdown\", function(cmCfg, modeCfg) {\n\n var htmlMode = CodeMirror.getMode(cmCfg, \"text/html\");\n var htmlModeMissing = htmlMode.name == \"null\"\n\n function getMode(name) {\n if (CodeMirror.findModeByName) {\n var found = CodeMirror.findModeByName(name);\n if (found) name = found.mime || found.mimes[0];\n }\n var mode = CodeMirror.getMode(cmCfg, name);\n return mode.name == \"null\" ? null : mode;\n }\n\n // Should characters that affect highlighting be highlighted separate?\n // Does not include characters that will be output (such as `1.` and `-` for lists)\n if (modeCfg.highlightFormatting === undefined)\n modeCfg.highlightFormatting = false;\n\n // Maximum number of nested blockquotes. Set to 0 for infinite nesting.\n // Excess `>` will emit `error` token.\n if (modeCfg.maxBlockquoteDepth === undefined)\n modeCfg.maxBlockquoteDepth = 0;\n\n // Turn on task lists? (\"- [ ] \" and \"- [x] \")\n if (modeCfg.taskLists === undefined) modeCfg.taskLists = false;\n\n // Turn on strikethrough syntax\n if (modeCfg.strikethrough === undefined)\n modeCfg.strikethrough = false;\n\n if (modeCfg.emoji === undefined)\n modeCfg.emoji = false;\n\n if (modeCfg.fencedCodeBlockHighlighting === undefined)\n modeCfg.fencedCodeBlockHighlighting = true;\n\n if (modeCfg.fencedCodeBlockDefaultMode === undefined)\n modeCfg.fencedCodeBlockDefaultMode = 'text/plain';\n\n if (modeCfg.xml === undefined)\n modeCfg.xml = true;\n\n // Allow token types to be overridden by user-provided token types.\n if (modeCfg.tokenTypeOverrides === undefined)\n modeCfg.tokenTypeOverrides = {};\n\n var tokenTypes = {\n header: \"header\",\n code: \"comment\",\n quote: \"quote\",\n list1: \"variable-2\",\n list2: \"variable-3\",\n list3: \"keyword\",\n hr: \"hr\",\n image: \"image\",\n imageAltText: \"image-alt-text\",\n imageMarker: \"image-marker\",\n formatting: \"formatting\",\n linkInline: \"link\",\n linkEmail: \"link\",\n linkText: \"link\",\n linkHref: \"string\",\n em: \"em\",\n strong: \"strong\",\n strikethrough: \"strikethrough\",\n emoji: \"builtin\"\n };\n\n for (var tokenType in tokenTypes) {\n if (tokenTypes.hasOwnProperty(tokenType) && modeCfg.tokenTypeOverrides[tokenType]) {\n tokenTypes[tokenType] = modeCfg.tokenTypeOverrides[tokenType];\n }\n }\n\n var hrRE = /^([*\\-_])(?:\\s*\\1){2,}\\s*$/\n , listRE = /^(?:[*\\-+]|^[0-9]+([.)]))\\s+/\n , taskListRE = /^\\[(x| )\\](?=\\s)/i // Must follow listRE\n , atxHeaderRE = modeCfg.allowAtxHeaderWithoutSpace ? /^(#+)/ : /^(#+)(?: |$)/\n , setextHeaderRE = /^ {0,3}(?:\\={1,}|-{2,})\\s*$/\n , textRE = /^[^#!\\[\\]*_\\\\<>` \"'(~:]+/\n , fencedCodeRE = /^(~~~+|```+)[ \\t]*([\\w\\/+#-]*)[^\\n`]*$/\n , linkDefRE = /^\\s*\\[[^\\]]+?\\]:.*$/ // naive link-definition\n , punctuation = /[!\"#$%&'()*+,\\-.\\/:;<=>?@\\[\\\\\\]^_`{|}~\\xA1\\xA7\\xAB\\xB6\\xB7\\xBB\\xBF\\u037E\\u0387\\u055A-\\u055F\\u0589\\u058A\\u05BE\\u05C0\\u05C3\\u05C6\\u05F3\\u05F4\\u0609\\u060A\\u060C\\u060D\\u061B\\u061E\\u061F\\u066A-\\u066D\\u06D4\\u0700-\\u070D\\u07F7-\\u07F9\\u0830-\\u083E\\u085E\\u0964\\u0965\\u0970\\u0AF0\\u0DF4\\u0E4F\\u0E5A\\u0E5B\\u0F04-\\u0F12\\u0F14\\u0F3A-\\u0F3D\\u0F85\\u0FD0-\\u0FD4\\u0FD9\\u0FDA\\u104A-\\u104F\\u10FB\\u1360-\\u1368\\u1400\\u166D\\u166E\\u169B\\u169C\\u16EB-\\u16ED\\u1735\\u1736\\u17D4-\\u17D6\\u17D8-\\u17DA\\u1800-\\u180A\\u1944\\u1945\\u1A1E\\u1A1F\\u1AA0-\\u1AA6\\u1AA8-\\u1AAD\\u1B5A-\\u1B60\\u1BFC-\\u1BFF\\u1C3B-\\u1C3F\\u1C7E\\u1C7F\\u1CC0-\\u1CC7\\u1CD3\\u2010-\\u2027\\u2030-\\u2043\\u2045-\\u2051\\u2053-\\u205E\\u207D\\u207E\\u208D\\u208E\\u2308-\\u230B\\u2329\\u232A\\u2768-\\u2775\\u27C5\\u27C6\\u27E6-\\u27EF\\u2983-\\u2998\\u29D8-\\u29DB\\u29FC\\u29FD\\u2CF9-\\u2CFC\\u2CFE\\u2CFF\\u2D70\\u2E00-\\u2E2E\\u2E30-\\u2E42\\u3001-\\u3003\\u3008-\\u3011\\u3014-\\u301F\\u3030\\u303D\\u30A0\\u30FB\\uA4FE\\uA4FF\\uA60D-\\uA60F\\uA673\\uA67E\\uA6F2-\\uA6F7\\uA874-\\uA877\\uA8CE\\uA8CF\\uA8F8-\\uA8FA\\uA8FC\\uA92E\\uA92F\\uA95F\\uA9C1-\\uA9CD\\uA9DE\\uA9DF\\uAA5C-\\uAA5F\\uAADE\\uAADF\\uAAF0\\uAAF1\\uABEB\\uFD3E\\uFD3F\\uFE10-\\uFE19\\uFE30-\\uFE52\\uFE54-\\uFE61\\uFE63\\uFE68\\uFE6A\\uFE6B\\uFF01-\\uFF03\\uFF05-\\uFF0A\\uFF0C-\\uFF0F\\uFF1A\\uFF1B\\uFF1F\\uFF20\\uFF3B-\\uFF3D\\uFF3F\\uFF5B\\uFF5D\\uFF5F-\\uFF65]|\\uD800[\\uDD00-\\uDD02\\uDF9F\\uDFD0]|\\uD801\\uDD6F|\\uD802[\\uDC57\\uDD1F\\uDD3F\\uDE50-\\uDE58\\uDE7F\\uDEF0-\\uDEF6\\uDF39-\\uDF3F\\uDF99-\\uDF9C]|\\uD804[\\uDC47-\\uDC4D\\uDCBB\\uDCBC\\uDCBE-\\uDCC1\\uDD40-\\uDD43\\uDD74\\uDD75\\uDDC5-\\uDDC9\\uDDCD\\uDDDB\\uDDDD-\\uDDDF\\uDE38-\\uDE3D\\uDEA9]|\\uD805[\\uDCC6\\uDDC1-\\uDDD7\\uDE41-\\uDE43\\uDF3C-\\uDF3E]|\\uD809[\\uDC70-\\uDC74]|\\uD81A[\\uDE6E\\uDE6F\\uDEF5\\uDF37-\\uDF3B\\uDF44]|\\uD82F\\uDC9F|\\uD836[\\uDE87-\\uDE8B]/\n , expandedTab = \" \" // CommonMark specifies tab as 4 spaces\n\n function switchInline(stream, state, f) {\n state.f = state.inline = f;\n return f(stream, state);\n }\n\n function switchBlock(stream, state, f) {\n state.f = state.block = f;\n return f(stream, state);\n }\n\n function lineIsEmpty(line) {\n return !line || !/\\S/.test(line.string)\n }\n\n // Blocks\n\n function blankLine(state) {\n // Reset linkTitle state\n state.linkTitle = false;\n state.linkHref = false;\n state.linkText = false;\n // Reset EM state\n state.em = false;\n // Reset STRONG state\n state.strong = false;\n // Reset strikethrough state\n state.strikethrough = false;\n // Reset state.quote\n state.quote = 0;\n // Reset state.indentedCode\n state.indentedCode = false;\n if (state.f == htmlBlock) {\n var exit = htmlModeMissing\n if (!exit) {\n var inner = CodeMirror.innerMode(htmlMode, state.htmlState)\n exit = inner.mode.name == \"xml\" && inner.state.tagStart === null &&\n (!inner.state.context && inner.state.tokenize.isInText)\n }\n if (exit) {\n state.f = inlineNormal;\n state.block = blockNormal;\n state.htmlState = null;\n }\n }\n // Reset state.trailingSpace\n state.trailingSpace = 0;\n state.trailingSpaceNewLine = false;\n // Mark this line as blank\n state.prevLine = state.thisLine\n state.thisLine = {stream: null}\n return null;\n }\n\n function blockNormal(stream, state) {\n var firstTokenOnLine = stream.column() === state.indentation;\n var prevLineLineIsEmpty = lineIsEmpty(state.prevLine.stream);\n var prevLineIsIndentedCode = state.indentedCode;\n var prevLineIsHr = state.prevLine.hr;\n var prevLineIsList = state.list !== false;\n var maxNonCodeIndentation = (state.listStack[state.listStack.length - 1] || 0) + 3;\n\n state.indentedCode = false;\n\n var lineIndentation = state.indentation;\n // compute once per line (on first token)\n if (state.indentationDiff === null) {\n state.indentationDiff = state.indentation;\n if (prevLineIsList) {\n state.list = null;\n // While this list item's marker's indentation is less than the deepest\n // list item's content's indentation,pop the deepest list item\n // indentation off the stack, and update block indentation state\n while (lineIndentation < state.listStack[state.listStack.length - 1]) {\n state.listStack.pop();\n if (state.listStack.length) {\n state.indentation = state.listStack[state.listStack.length - 1];\n // less than the first list's indent -> the line is no longer a list\n } else {\n state.list = false;\n }\n }\n if (state.list !== false) {\n state.indentationDiff = lineIndentation - state.listStack[state.listStack.length - 1]\n }\n }\n }\n\n // not comprehensive (currently only for setext detection purposes)\n var allowsInlineContinuation = (\n !prevLineLineIsEmpty && !prevLineIsHr && !state.prevLine.header &&\n (!prevLineIsList || !prevLineIsIndentedCode) &&\n !state.prevLine.fencedCodeEnd\n );\n\n var isHr = (state.list === false || prevLineIsHr || prevLineLineIsEmpty) &&\n state.indentation <= maxNonCodeIndentation && stream.match(hrRE);\n\n var match = null;\n if (state.indentationDiff >= 4 && (prevLineIsIndentedCode || state.prevLine.fencedCodeEnd ||\n state.prevLine.header || prevLineLineIsEmpty)) {\n stream.skipToEnd();\n state.indentedCode = true;\n return tokenTypes.code;\n } else if (stream.eatSpace()) {\n return null;\n } else if (firstTokenOnLine && state.indentation <= maxNonCodeIndentation && (match = stream.match(atxHeaderRE)) && match[1].length <= 6) {\n state.quote = 0;\n state.header = match[1].length;\n state.thisLine.header = true;\n if (modeCfg.highlightFormatting) state.formatting = \"header\";\n state.f = state.inline;\n return getType(state);\n } else if (state.indentation <= maxNonCodeIndentation && stream.eat('>')) {\n state.quote = firstTokenOnLine ? 1 : state.quote + 1;\n if (modeCfg.highlightFormatting) state.formatting = \"quote\";\n stream.eatSpace();\n return getType(state);\n } else if (!isHr && !state.setext && firstTokenOnLine && state.indentation <= maxNonCodeIndentation && (match = stream.match(listRE))) {\n var listType = match[1] ? \"ol\" : \"ul\";\n\n state.indentation = lineIndentation + stream.current().length;\n state.list = true;\n state.quote = 0;\n\n // Add this list item's content's indentation to the stack\n state.listStack.push(state.indentation);\n // Reset inline styles which shouldn't propagate across list items\n state.em = false;\n state.strong = false;\n state.code = false;\n state.strikethrough = false;\n\n if (modeCfg.taskLists && stream.match(taskListRE, false)) {\n state.taskList = true;\n }\n state.f = state.inline;\n if (modeCfg.highlightFormatting) state.formatting = [\"list\", \"list-\" + listType];\n return getType(state);\n } else if (firstTokenOnLine && state.indentation <= maxNonCodeIndentation && (match = stream.match(fencedCodeRE, true))) {\n state.quote = 0;\n state.fencedEndRE = new RegExp(match[1] + \"+ *$\");\n // try switching mode\n state.localMode = modeCfg.fencedCodeBlockHighlighting && getMode(match[2] || modeCfg.fencedCodeBlockDefaultMode );\n if (state.localMode) state.localState = CodeMirror.startState(state.localMode);\n state.f = state.block = local;\n if (modeCfg.highlightFormatting) state.formatting = \"code-block\";\n state.code = -1\n return getType(state);\n // SETEXT has lowest block-scope precedence after HR, so check it after\n // the others (code, blockquote, list...)\n } else if (\n // if setext set, indicates line after ---/===\n state.setext || (\n // line before ---/===\n (!allowsInlineContinuation || !prevLineIsList) && !state.quote && state.list === false &&\n !state.code && !isHr && !linkDefRE.test(stream.string) &&\n (match = stream.lookAhead(1)) && (match = match.match(setextHeaderRE))\n )\n ) {\n if ( !state.setext ) {\n state.header = match[0].charAt(0) == '=' ? 1 : 2;\n state.setext = state.header;\n } else {\n state.header = state.setext;\n // has no effect on type so we can reset it now\n state.setext = 0;\n stream.skipToEnd();\n if (modeCfg.highlightFormatting) state.formatting = \"header\";\n }\n state.thisLine.header = true;\n state.f = state.inline;\n return getType(state);\n } else if (isHr) {\n stream.skipToEnd();\n state.hr = true;\n state.thisLine.hr = true;\n return tokenTypes.hr;\n } else if (stream.peek() === '[') {\n return switchInline(stream, state, footnoteLink);\n }\n\n return switchInline(stream, state, state.inline);\n }\n\n function htmlBlock(stream, state) {\n var style = htmlMode.token(stream, state.htmlState);\n if (!htmlModeMissing) {\n var inner = CodeMirror.innerMode(htmlMode, state.htmlState)\n if ((inner.mode.name == \"xml\" && inner.state.tagStart === null &&\n (!inner.state.context && inner.state.tokenize.isInText)) ||\n (state.md_inside && stream.current().indexOf(\">\") > -1)) {\n state.f = inlineNormal;\n state.block = blockNormal;\n state.htmlState = null;\n }\n }\n return style;\n }\n\n function local(stream, state) {\n var currListInd = state.listStack[state.listStack.length - 1] || 0;\n var hasExitedList = state.indentation < currListInd;\n var maxFencedEndInd = currListInd + 3;\n if (state.fencedEndRE && state.indentation <= maxFencedEndInd && (hasExitedList || stream.match(state.fencedEndRE))) {\n if (modeCfg.highlightFormatting) state.formatting = \"code-block\";\n var returnType;\n if (!hasExitedList) returnType = getType(state)\n state.localMode = state.localState = null;\n state.block = blockNormal;\n state.f = inlineNormal;\n state.fencedEndRE = null;\n state.code = 0\n state.thisLine.fencedCodeEnd = true;\n if (hasExitedList) return switchBlock(stream, state, state.block);\n return returnType;\n } else if (state.localMode) {\n return state.localMode.token(stream, state.localState);\n } else {\n stream.skipToEnd();\n return tokenTypes.code;\n }\n }\n\n // Inline\n function getType(state) {\n var styles = [];\n\n if (state.formatting) {\n styles.push(tokenTypes.formatting);\n\n if (typeof state.formatting === \"string\") state.formatting = [state.formatting];\n\n for (var i = 0; i < state.formatting.length; i++) {\n styles.push(tokenTypes.formatting + \"-\" + state.formatting[i]);\n\n if (state.formatting[i] === \"header\") {\n styles.push(tokenTypes.formatting + \"-\" + state.formatting[i] + \"-\" + state.header);\n }\n\n // Add `formatting-quote` and `formatting-quote-#` for blockquotes\n // Add `error` instead if the maximum blockquote nesting depth is passed\n if (state.formatting[i] === \"quote\") {\n if (!modeCfg.maxBlockquoteDepth || modeCfg.maxBlockquoteDepth >= state.quote) {\n styles.push(tokenTypes.formatting + \"-\" + state.formatting[i] + \"-\" + state.quote);\n } else {\n styles.push(\"error\");\n }\n }\n }\n }\n\n if (state.taskOpen) {\n styles.push(\"meta\");\n return styles.length ? styles.join(' ') : null;\n }\n if (state.taskClosed) {\n styles.push(\"property\");\n return styles.length ? styles.join(' ') : null;\n }\n\n if (state.linkHref) {\n styles.push(tokenTypes.linkHref, \"url\");\n } else { // Only apply inline styles to non-url text\n if (state.strong) { styles.push(tokenTypes.strong); }\n if (state.em) { styles.push(tokenTypes.em); }\n if (state.strikethrough) { styles.push(tokenTypes.strikethrough); }\n if (state.emoji) { styles.push(tokenTypes.emoji); }\n if (state.linkText) { styles.push(tokenTypes.linkText); }\n if (state.code) { styles.push(tokenTypes.code); }\n if (state.image) { styles.push(tokenTypes.image); }\n if (state.imageAltText) { styles.push(tokenTypes.imageAltText, \"link\"); }\n if (state.imageMarker) { styles.push(tokenTypes.imageMarker); }\n }\n\n if (state.header) { styles.push(tokenTypes.header, tokenTypes.header + \"-\" + state.header); }\n\n if (state.quote) {\n styles.push(tokenTypes.quote);\n\n // Add `quote-#` where the maximum for `#` is modeCfg.maxBlockquoteDepth\n if (!modeCfg.maxBlockquoteDepth || modeCfg.maxBlockquoteDepth >= state.quote) {\n styles.push(tokenTypes.quote + \"-\" + state.quote);\n } else {\n styles.push(tokenTypes.quote + \"-\" + modeCfg.maxBlockquoteDepth);\n }\n }\n\n if (state.list !== false) {\n var listMod = (state.listStack.length - 1) % 3;\n if (!listMod) {\n styles.push(tokenTypes.list1);\n } else if (listMod === 1) {\n styles.push(tokenTypes.list2);\n } else {\n styles.push(tokenTypes.list3);\n }\n }\n\n if (state.trailingSpaceNewLine) {\n styles.push(\"trailing-space-new-line\");\n } else if (state.trailingSpace) {\n styles.push(\"trailing-space-\" + (state.trailingSpace % 2 ? \"a\" : \"b\"));\n }\n\n return styles.length ? styles.join(' ') : null;\n }\n\n function handleText(stream, state) {\n if (stream.match(textRE, true)) {\n return getType(state);\n }\n return undefined;\n }\n\n function inlineNormal(stream, state) {\n var style = state.text(stream, state);\n if (typeof style !== 'undefined')\n return style;\n\n if (state.list) { // List marker (*, +, -, 1., etc)\n state.list = null;\n return getType(state);\n }\n\n if (state.taskList) {\n var taskOpen = stream.match(taskListRE, true)[1] === \" \";\n if (taskOpen) state.taskOpen = true;\n else state.taskClosed = true;\n if (modeCfg.highlightFormatting) state.formatting = \"task\";\n state.taskList = false;\n return getType(state);\n }\n\n state.taskOpen = false;\n state.taskClosed = false;\n\n if (state.header && stream.match(/^#+$/, true)) {\n if (modeCfg.highlightFormatting) state.formatting = \"header\";\n return getType(state);\n }\n\n var ch = stream.next();\n\n // Matches link titles present on next line\n if (state.linkTitle) {\n state.linkTitle = false;\n var matchCh = ch;\n if (ch === '(') {\n matchCh = ')';\n }\n matchCh = (matchCh+'').replace(/([.?*+^\\[\\]\\\\(){}|-])/g, \"\\\\$1\");\n var regex = '^\\\\s*(?:[^' + matchCh + '\\\\\\\\]+|\\\\\\\\\\\\\\\\|\\\\\\\\.)' + matchCh;\n if (stream.match(new RegExp(regex), true)) {\n return tokenTypes.linkHref;\n }\n }\n\n // If this block is changed, it may need to be updated in GFM mode\n if (ch === '`') {\n var previousFormatting = state.formatting;\n if (modeCfg.highlightFormatting) state.formatting = \"code\";\n stream.eatWhile('`');\n var count = stream.current().length\n if (state.code == 0 && (!state.quote || count == 1)) {\n state.code = count\n return getType(state)\n } else if (count == state.code) { // Must be exact\n var t = getType(state)\n state.code = 0\n return t\n } else {\n state.formatting = previousFormatting\n return getType(state)\n }\n } else if (state.code) {\n return getType(state);\n }\n\n if (ch === '\\\\') {\n stream.next();\n if (modeCfg.highlightFormatting) {\n var type = getType(state);\n var formattingEscape = tokenTypes.formatting + \"-escape\";\n return type ? type + \" \" + formattingEscape : formattingEscape;\n }\n }\n\n if (ch === '!' && stream.match(/\\[[^\\]]*\\] ?(?:\\(|\\[)/, false)) {\n state.imageMarker = true;\n state.image = true;\n if (modeCfg.highlightFormatting) state.formatting = \"image\";\n return getType(state);\n }\n\n if (ch === '[' && state.imageMarker && stream.match(/[^\\]]*\\](\\(.*?\\)| ?\\[.*?\\])/, false)) {\n state.imageMarker = false;\n state.imageAltText = true\n if (modeCfg.highlightFormatting) state.formatting = \"image\";\n return getType(state);\n }\n\n if (ch === ']' && state.imageAltText) {\n if (modeCfg.highlightFormatting) state.formatting = \"image\";\n var type = getType(state);\n state.imageAltText = false;\n state.image = false;\n state.inline = state.f = linkHref;\n return type;\n }\n\n if (ch === '[' && !state.image) {\n if (state.linkText && stream.match(/^.*?\\]/)) return getType(state)\n state.linkText = true;\n if (modeCfg.highlightFormatting) state.formatting = \"link\";\n return getType(state);\n }\n\n if (ch === ']' && state.linkText) {\n if (modeCfg.highlightFormatting) state.formatting = \"link\";\n var type = getType(state);\n state.linkText = false;\n state.inline = state.f = stream.match(/\\(.*?\\)| ?\\[.*?\\]/, false) ? linkHref : inlineNormal\n return type;\n }\n\n if (ch === '<' && stream.match(/^(https?|ftps?):\\/\\/(?:[^\\\\>]|\\\\.)+>/, false)) {\n state.f = state.inline = linkInline;\n if (modeCfg.highlightFormatting) state.formatting = \"link\";\n var type = getType(state);\n if (type){\n type += \" \";\n } else {\n type = \"\";\n }\n return type + tokenTypes.linkInline;\n }\n\n if (ch === '<' && stream.match(/^[^> \\\\]+@(?:[^\\\\>]|\\\\.)+>/, false)) {\n state.f = state.inline = linkInline;\n if (modeCfg.highlightFormatting) state.formatting = \"link\";\n var type = getType(state);\n if (type){\n type += \" \";\n } else {\n type = \"\";\n }\n return type + tokenTypes.linkEmail;\n }\n\n if (modeCfg.xml && ch === '<' && stream.match(/^(!--|\\?|!\\[CDATA\\[|[a-z][a-z0-9-]*(?:\\s+[a-z_:.\\-]+(?:\\s*=\\s*[^>]+)?)*\\s*(?:>|$))/i, false)) {\n var end = stream.string.indexOf(\">\", stream.pos);\n if (end != -1) {\n var atts = stream.string.substring(stream.start, end);\n if (/markdown\\s*=\\s*('|\"){0,1}1('|\"){0,1}/.test(atts)) state.md_inside = true;\n }\n stream.backUp(1);\n state.htmlState = CodeMirror.startState(htmlMode);\n return switchBlock(stream, state, htmlBlock);\n }\n\n if (modeCfg.xml && ch === '<' && stream.match(/^\\/\\w*?>/)) {\n state.md_inside = false;\n return \"tag\";\n } else if (ch === \"*\" || ch === \"_\") {\n var len = 1, before = stream.pos == 1 ? \" \" : stream.string.charAt(stream.pos - 2)\n while (len < 3 && stream.eat(ch)) len++\n var after = stream.peek() || \" \"\n // See http://spec.commonmark.org/0.27/#emphasis-and-strong-emphasis\n var leftFlanking = !/\\s/.test(after) && (!punctuation.test(after) || /\\s/.test(before) || punctuation.test(before))\n var rightFlanking = !/\\s/.test(before) && (!punctuation.test(before) || /\\s/.test(after) || punctuation.test(after))\n var setEm = null, setStrong = null\n if (len % 2) { // Em\n if (!state.em && leftFlanking && (ch === \"*\" || !rightFlanking || punctuation.test(before)))\n setEm = true\n else if (state.em == ch && rightFlanking && (ch === \"*\" || !leftFlanking || punctuation.test(after)))\n setEm = false\n }\n if (len > 1) { // Strong\n if (!state.strong && leftFlanking && (ch === \"*\" || !rightFlanking || punctuation.test(before)))\n setStrong = true\n else if (state.strong == ch && rightFlanking && (ch === \"*\" || !leftFlanking || punctuation.test(after)))\n setStrong = false\n }\n if (setStrong != null || setEm != null) {\n if (modeCfg.highlightFormatting) state.formatting = setEm == null ? \"strong\" : setStrong == null ? \"em\" : \"strong em\"\n if (setEm === true) state.em = ch\n if (setStrong === true) state.strong = ch\n var t = getType(state)\n if (setEm === false) state.em = false\n if (setStrong === false) state.strong = false\n return t\n }\n } else if (ch === ' ') {\n if (stream.eat('*') || stream.eat('_')) { // Probably surrounded by spaces\n if (stream.peek() === ' ') { // Surrounded by spaces, ignore\n return getType(state);\n } else { // Not surrounded by spaces, back up pointer\n stream.backUp(1);\n }\n }\n }\n\n if (modeCfg.strikethrough) {\n if (ch === '~' && stream.eatWhile(ch)) {\n if (state.strikethrough) {// Remove strikethrough\n if (modeCfg.highlightFormatting) state.formatting = \"strikethrough\";\n var t = getType(state);\n state.strikethrough = false;\n return t;\n } else if (stream.match(/^[^\\s]/, false)) {// Add strikethrough\n state.strikethrough = true;\n if (modeCfg.highlightFormatting) state.formatting = \"strikethrough\";\n return getType(state);\n }\n } else if (ch === ' ') {\n if (stream.match('~~', true)) { // Probably surrounded by space\n if (stream.peek() === ' ') { // Surrounded by spaces, ignore\n return getType(state);\n } else { // Not surrounded by spaces, back up pointer\n stream.backUp(2);\n }\n }\n }\n }\n\n if (modeCfg.emoji && ch === \":\" && stream.match(/^(?:[a-z_\\d+][a-z_\\d+-]*|\\-[a-z_\\d+][a-z_\\d+-]*):/)) {\n state.emoji = true;\n if (modeCfg.highlightFormatting) state.formatting = \"emoji\";\n var retType = getType(state);\n state.emoji = false;\n return retType;\n }\n\n if (ch === ' ') {\n if (stream.match(/^ +$/, false)) {\n state.trailingSpace++;\n } else if (state.trailingSpace) {\n state.trailingSpaceNewLine = true;\n }\n }\n\n return getType(state);\n }\n\n function linkInline(stream, state) {\n var ch = stream.next();\n\n if (ch === \">\") {\n state.f = state.inline = inlineNormal;\n if (modeCfg.highlightFormatting) state.formatting = \"link\";\n var type = getType(state);\n if (type){\n type += \" \";\n } else {\n type = \"\";\n }\n return type + tokenTypes.linkInline;\n }\n\n stream.match(/^[^>]+/, true);\n\n return tokenTypes.linkInline;\n }\n\n function linkHref(stream, state) {\n // Check if space, and return NULL if so (to avoid marking the space)\n if(stream.eatSpace()){\n return null;\n }\n var ch = stream.next();\n if (ch === '(' || ch === '[') {\n state.f = state.inline = getLinkHrefInside(ch === \"(\" ? \")\" : \"]\");\n if (modeCfg.highlightFormatting) state.formatting = \"link-string\";\n state.linkHref = true;\n return getType(state);\n }\n return 'error';\n }\n\n var linkRE = {\n \")\": /^(?:[^\\\\\\(\\)]|\\\\.|\\((?:[^\\\\\\(\\)]|\\\\.)*\\))*?(?=\\))/,\n \"]\": /^(?:[^\\\\\\[\\]]|\\\\.|\\[(?:[^\\\\\\[\\]]|\\\\.)*\\])*?(?=\\])/\n }\n\n function getLinkHrefInside(endChar) {\n return function(stream, state) {\n var ch = stream.next();\n\n if (ch === endChar) {\n state.f = state.inline = inlineNormal;\n if (modeCfg.highlightFormatting) state.formatting = \"link-string\";\n var returnState = getType(state);\n state.linkHref = false;\n return returnState;\n }\n\n stream.match(linkRE[endChar])\n state.linkHref = true;\n return getType(state);\n };\n }\n\n function footnoteLink(stream, state) {\n if (stream.match(/^([^\\]\\\\]|\\\\.)*\\]:/, false)) {\n state.f = footnoteLinkInside;\n stream.next(); // Consume [\n if (modeCfg.highlightFormatting) state.formatting = \"link\";\n state.linkText = true;\n return getType(state);\n }\n return switchInline(stream, state, inlineNormal);\n }\n\n function footnoteLinkInside(stream, state) {\n if (stream.match(']:', true)) {\n state.f = state.inline = footnoteUrl;\n if (modeCfg.highlightFormatting) state.formatting = \"link\";\n var returnType = getType(state);\n state.linkText = false;\n return returnType;\n }\n\n stream.match(/^([^\\]\\\\]|\\\\.)+/, true);\n\n return tokenTypes.linkText;\n }\n\n function footnoteUrl(stream, state) {\n // Check if space, and return NULL if so (to avoid marking the space)\n if(stream.eatSpace()){\n return null;\n }\n // Match URL\n stream.match(/^[^\\s]+/, true);\n // Check for link title\n if (stream.peek() === undefined) { // End of line, set flag to check next line\n state.linkTitle = true;\n } else { // More content on line, check if link title\n stream.match(/^(?:\\s+(?:\"(?:[^\"\\\\]|\\\\.)+\"|'(?:[^'\\\\]|\\\\.)+'|\\((?:[^)\\\\]|\\\\.)+\\)))?/, true);\n }\n state.f = state.inline = inlineNormal;\n return tokenTypes.linkHref + \" url\";\n }\n\n var mode = {\n startState: function() {\n return {\n f: blockNormal,\n\n prevLine: {stream: null},\n thisLine: {stream: null},\n\n block: blockNormal,\n htmlState: null,\n indentation: 0,\n\n inline: inlineNormal,\n text: handleText,\n\n formatting: false,\n linkText: false,\n linkHref: false,\n linkTitle: false,\n code: 0,\n em: false,\n strong: false,\n header: 0,\n setext: 0,\n hr: false,\n taskList: false,\n list: false,\n listStack: [],\n quote: 0,\n trailingSpace: 0,\n trailingSpaceNewLine: false,\n strikethrough: false,\n emoji: false,\n fencedEndRE: null\n };\n },\n\n copyState: function(s) {\n return {\n f: s.f,\n\n prevLine: s.prevLine,\n thisLine: s.thisLine,\n\n block: s.block,\n htmlState: s.htmlState && CodeMirror.copyState(htmlMode, s.htmlState),\n indentation: s.indentation,\n\n localMode: s.localMode,\n localState: s.localMode ? CodeMirror.copyState(s.localMode, s.localState) : null,\n\n inline: s.inline,\n text: s.text,\n formatting: false,\n linkText: s.linkText,\n linkTitle: s.linkTitle,\n linkHref: s.linkHref,\n code: s.code,\n em: s.em,\n strong: s.strong,\n strikethrough: s.strikethrough,\n emoji: s.emoji,\n header: s.header,\n setext: s.setext,\n hr: s.hr,\n taskList: s.taskList,\n list: s.list,\n listStack: s.listStack.slice(0),\n quote: s.quote,\n indentedCode: s.indentedCode,\n trailingSpace: s.trailingSpace,\n trailingSpaceNewLine: s.trailingSpaceNewLine,\n md_inside: s.md_inside,\n fencedEndRE: s.fencedEndRE\n };\n },\n\n token: function(stream, state) {\n\n // Reset state.formatting\n state.formatting = false;\n\n if (stream != state.thisLine.stream) {\n state.header = 0;\n state.hr = false;\n\n if (stream.match(/^\\s*$/, true)) {\n blankLine(state);\n return null;\n }\n\n state.prevLine = state.thisLine\n state.thisLine = {stream: stream}\n\n // Reset state.taskList\n state.taskList = false;\n\n // Reset state.trailingSpace\n state.trailingSpace = 0;\n state.trailingSpaceNewLine = false;\n\n if (!state.localState) {\n state.f = state.block;\n if (state.f != htmlBlock) {\n var indentation = stream.match(/^\\s*/, true)[0].replace(/\\t/g, expandedTab).length;\n state.indentation = indentation;\n state.indentationDiff = null;\n if (indentation > 0) return null;\n }\n }\n }\n return state.f(stream, state);\n },\n\n innerMode: function(state) {\n if (state.block == htmlBlock) return {state: state.htmlState, mode: htmlMode};\n if (state.localState) return {state: state.localState, mode: state.localMode};\n return {state: state, mode: mode};\n },\n\n indent: function(state, textAfter, line) {\n if (state.block == htmlBlock && htmlMode.indent) return htmlMode.indent(state.htmlState, textAfter, line)\n if (state.localState && state.localMode.indent) return state.localMode.indent(state.localState, textAfter, line)\n return CodeMirror.Pass\n },\n\n blankLine: blankLine,\n\n getType: getType,\n\n blockCommentStart: \"\",\n closeBrackets: \"()[]{}''\\\"\\\"``\",\n fold: \"markdown\"\n };\n return mode;\n}, \"xml\");\n\nCodeMirror.defineMIME(\"text/markdown\", \"markdown\");\n\nCodeMirror.defineMIME(\"text/x-markdown\", \"markdown\");\n\n});\n", "// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/5/LICENSE\n\n(function(mod) {\n if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n mod(require(\"../../lib/codemirror\"));\n else if (typeof define == \"function\" && define.amd) // AMD\n define([\"../../lib/codemirror\"], mod);\n else // Plain browser env\n mod(CodeMirror);\n})(function(CodeMirror) {\n\"use strict\";\n\nCodeMirror.defineMode(\"nginx\", function(config) {\n\n function words(str) {\n var obj = {}, words = str.split(\" \");\n for (var i = 0; i < words.length; ++i) obj[words[i]] = true;\n return obj;\n }\n\n var keywords = words(\n /* ngxDirectiveControl */ \"break return rewrite set\" +\n /* ngxDirective */ \" accept_mutex accept_mutex_delay access_log add_after_body add_before_body add_header addition_types aio alias allow ancient_browser ancient_browser_value auth_basic auth_basic_user_file auth_http auth_http_header auth_http_timeout autoindex autoindex_exact_size autoindex_localtime charset charset_types client_body_buffer_size client_body_in_file_only client_body_in_single_buffer client_body_temp_path client_body_timeout client_header_buffer_size client_header_timeout client_max_body_size connection_pool_size create_full_put_path daemon dav_access dav_methods debug_connection debug_points default_type degradation degrade deny devpoll_changes devpoll_events directio directio_alignment empty_gif env epoll_events error_log eventport_events expires fastcgi_bind fastcgi_buffer_size fastcgi_buffers fastcgi_busy_buffers_size fastcgi_cache fastcgi_cache_key fastcgi_cache_methods fastcgi_cache_min_uses fastcgi_cache_path fastcgi_cache_use_stale fastcgi_cache_valid fastcgi_catch_stderr fastcgi_connect_timeout fastcgi_hide_header fastcgi_ignore_client_abort fastcgi_ignore_headers fastcgi_index fastcgi_intercept_errors fastcgi_max_temp_file_size fastcgi_next_upstream fastcgi_param fastcgi_pass_header fastcgi_pass_request_body fastcgi_pass_request_headers fastcgi_read_timeout fastcgi_send_lowat fastcgi_send_timeout fastcgi_split_path_info fastcgi_store fastcgi_store_access fastcgi_temp_file_write_size fastcgi_temp_path fastcgi_upstream_fail_timeout fastcgi_upstream_max_fails flv geoip_city geoip_country google_perftools_profiles gzip gzip_buffers gzip_comp_level gzip_disable gzip_hash gzip_http_version gzip_min_length gzip_no_buffer gzip_proxied gzip_static gzip_types gzip_vary gzip_window if_modified_since ignore_invalid_headers image_filter image_filter_buffer image_filter_jpeg_quality image_filter_transparency imap_auth imap_capabilities imap_client_buffer index ip_hash keepalive_requests keepalive_timeout kqueue_changes kqueue_events large_client_header_buffers limit_conn limit_conn_log_level limit_rate limit_rate_after limit_req limit_req_log_level limit_req_zone limit_zone lingering_time lingering_timeout lock_file log_format log_not_found log_subrequest map_hash_bucket_size map_hash_max_size master_process memcached_bind memcached_buffer_size memcached_connect_timeout memcached_next_upstream memcached_read_timeout memcached_send_timeout memcached_upstream_fail_timeout memcached_upstream_max_fails merge_slashes min_delete_depth modern_browser modern_browser_value msie_padding msie_refresh multi_accept open_file_cache open_file_cache_errors open_file_cache_events open_file_cache_min_uses open_file_cache_valid open_log_file_cache output_buffers override_charset perl perl_modules perl_require perl_set pid pop3_auth pop3_capabilities port_in_redirect postpone_gzipping postpone_output protocol proxy proxy_bind proxy_buffer proxy_buffer_size proxy_buffering proxy_buffers proxy_busy_buffers_size proxy_cache proxy_cache_key proxy_cache_methods proxy_cache_min_uses proxy_cache_path proxy_cache_use_stale proxy_cache_valid proxy_connect_timeout proxy_headers_hash_bucket_size proxy_headers_hash_max_size proxy_hide_header proxy_ignore_client_abort proxy_ignore_headers proxy_intercept_errors proxy_max_temp_file_size proxy_method proxy_next_upstream proxy_pass_error_message proxy_pass_header proxy_pass_request_body proxy_pass_request_headers proxy_read_timeout proxy_redirect proxy_send_lowat proxy_send_timeout proxy_set_body proxy_set_header proxy_ssl_session_reuse proxy_store proxy_store_access proxy_temp_file_write_size proxy_temp_path proxy_timeout proxy_upstream_fail_timeout proxy_upstream_max_fails random_index read_ahead real_ip_header recursive_error_pages request_pool_size reset_timedout_connection resolver resolver_timeout rewrite_log rtsig_overflow_events rtsig_overflow_test rtsig_overflow_threshold rtsig_signo satisfy secure_link_secret send_lowat send_timeout sendfile sendfile_max_chunk server_name_in_redirect server_names_hash_bucket_size server_names_hash_max_size server_tokens set_real_ip_from smtp_auth smtp_capabilities smtp_client_buffer smtp_greeting_delay so_keepalive source_charset ssi ssi_ignore_recycled_buffers ssi_min_file_chunk ssi_silent_errors ssi_types ssi_value_length ssl ssl_certificate ssl_certificate_key ssl_ciphers ssl_client_certificate ssl_crl ssl_dhparam ssl_engine ssl_prefer_server_ciphers ssl_protocols ssl_session_cache ssl_session_timeout ssl_verify_client ssl_verify_depth starttls stub_status sub_filter sub_filter_once sub_filter_types tcp_nodelay tcp_nopush thread_stack_size timeout timer_resolution types_hash_bucket_size types_hash_max_size underscores_in_headers uninitialized_variable_warn use user userid userid_domain userid_expires userid_mark userid_name userid_p3p userid_path userid_service valid_referers variables_hash_bucket_size variables_hash_max_size worker_connections worker_cpu_affinity worker_priority worker_processes worker_rlimit_core worker_rlimit_nofile worker_rlimit_sigpending worker_threads working_directory xclient xml_entities xslt_stylesheet xslt_typesdrew@li229-23\"\n );\n\n var keywords_block = words(\n /* ngxDirectiveBlock */ \"http mail events server types location upstream charset_map limit_except if geo map\"\n );\n\n var keywords_important = words(\n /* ngxDirectiveImportant */ \"include root server server_name listen internal proxy_pass memcached_pass fastcgi_pass try_files\"\n );\n\n var indentUnit = config.indentUnit, type;\n function ret(style, tp) {type = tp; return style;}\n\n function tokenBase(stream, state) {\n\n\n stream.eatWhile(/[\\w\\$_]/);\n\n var cur = stream.current();\n\n\n if (keywords.propertyIsEnumerable(cur)) {\n return \"keyword\";\n }\n else if (keywords_block.propertyIsEnumerable(cur)) {\n return \"variable-2\";\n }\n else if (keywords_important.propertyIsEnumerable(cur)) {\n return \"string-2\";\n }\n /**/\n\n var ch = stream.next();\n if (ch == \"@\") {stream.eatWhile(/[\\w\\\\\\-]/); return ret(\"meta\", stream.current());}\n else if (ch == \"/\" && stream.eat(\"*\")) {\n state.tokenize = tokenCComment;\n return tokenCComment(stream, state);\n }\n else if (ch == \"<\" && stream.eat(\"!\")) {\n state.tokenize = tokenSGMLComment;\n return tokenSGMLComment(stream, state);\n }\n else if (ch == \"=\") ret(null, \"compare\");\n else if ((ch == \"~\" || ch == \"|\") && stream.eat(\"=\")) return ret(null, \"compare\");\n else if (ch == \"\\\"\" || ch == \"'\") {\n state.tokenize = tokenString(ch);\n return state.tokenize(stream, state);\n }\n else if (ch == \"#\") {\n stream.skipToEnd();\n return ret(\"comment\", \"comment\");\n }\n else if (ch == \"!\") {\n stream.match(/^\\s*\\w*/);\n return ret(\"keyword\", \"important\");\n }\n else if (/\\d/.test(ch)) {\n stream.eatWhile(/[\\w.%]/);\n return ret(\"number\", \"unit\");\n }\n else if (/[,.+>*\\/]/.test(ch)) {\n return ret(null, \"select-op\");\n }\n else if (/[;{}:\\[\\]]/.test(ch)) {\n return ret(null, ch);\n }\n else {\n stream.eatWhile(/[\\w\\\\\\-]/);\n return ret(\"variable\", \"variable\");\n }\n }\n\n function tokenCComment(stream, state) {\n var maybeEnd = false, ch;\n while ((ch = stream.next()) != null) {\n if (maybeEnd && ch == \"/\") {\n state.tokenize = tokenBase;\n break;\n }\n maybeEnd = (ch == \"*\");\n }\n return ret(\"comment\", \"comment\");\n }\n\n function tokenSGMLComment(stream, state) {\n var dashes = 0, ch;\n while ((ch = stream.next()) != null) {\n if (dashes >= 2 && ch == \">\") {\n state.tokenize = tokenBase;\n break;\n }\n dashes = (ch == \"-\") ? dashes + 1 : 0;\n }\n return ret(\"comment\", \"comment\");\n }\n\n function tokenString(quote) {\n return function(stream, state) {\n var escaped = false, ch;\n while ((ch = stream.next()) != null) {\n if (ch == quote && !escaped)\n break;\n escaped = !escaped && ch == \"\\\\\";\n }\n if (!escaped) state.tokenize = tokenBase;\n return ret(\"string\", \"string\");\n };\n }\n\n return {\n startState: function(base) {\n return {tokenize: tokenBase,\n baseIndent: base || 0,\n stack: []};\n },\n\n token: function(stream, state) {\n if (stream.eatSpace()) return null;\n type = null;\n var style = state.tokenize(stream, state);\n\n var context = state.stack[state.stack.length-1];\n if (type == \"hash\" && context == \"rule\") style = \"atom\";\n else if (style == \"variable\") {\n if (context == \"rule\") style = \"number\";\n else if (!context || context == \"@media{\") style = \"tag\";\n }\n\n if (context == \"rule\" && /^[\\{\\};]$/.test(type))\n state.stack.pop();\n if (type == \"{\") {\n if (context == \"@media\") state.stack[state.stack.length-1] = \"@media{\";\n else state.stack.push(\"{\");\n }\n else if (type == \"}\") state.stack.pop();\n else if (type == \"@media\") state.stack.push(\"@media\");\n else if (context == \"{\" && type != \"comment\") state.stack.push(\"rule\");\n return style;\n },\n\n indent: function(state, textAfter) {\n var n = state.stack.length;\n if (/^\\}/.test(textAfter))\n n -= state.stack[state.stack.length-1] == \"rule\" ? 2 : 1;\n return state.baseIndent + n * indentUnit;\n },\n\n electricChars: \"}\"\n };\n});\n\nCodeMirror.defineMIME(\"text/x-nginx-conf\", \"nginx\");\n\n});\n", "// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/5/LICENSE\n\n(function(mod) {\n if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n mod(require(\"../../lib/codemirror\"));\n else if (typeof define == \"function\" && define.amd) // AMD\n define([\"../../lib/codemirror\"], mod);\n else // Plain browser env\n mod(CodeMirror);\n})(function(CodeMirror) {\n\"use strict\";\n\nfunction Context(indented, column, type, info, align, prev) {\n this.indented = indented;\n this.column = column;\n this.type = type;\n this.info = info;\n this.align = align;\n this.prev = prev;\n}\nfunction pushContext(state, col, type, info) {\n var indent = state.indented;\n if (state.context && state.context.type == \"statement\" && type != \"statement\")\n indent = state.context.indented;\n return state.context = new Context(indent, col, type, info, null, state.context);\n}\nfunction popContext(state) {\n var t = state.context.type;\n if (t == \")\" || t == \"]\" || t == \"}\")\n state.indented = state.context.indented;\n return state.context = state.context.prev;\n}\n\nfunction typeBefore(stream, state, pos) {\n if (state.prevToken == \"variable\" || state.prevToken == \"type\") return true;\n if (/\\S(?:[^- ]>|[*\\]])\\s*$|\\*$/.test(stream.string.slice(0, pos))) return true;\n if (state.typeAtEndOfLine && stream.column() == stream.indentation()) return true;\n}\n\nfunction isTopScope(context) {\n for (;;) {\n if (!context || context.type == \"top\") return true;\n if (context.type == \"}\" && context.prev.info != \"namespace\") return false;\n context = context.prev;\n }\n}\n\nCodeMirror.defineMode(\"clike\", function(config, parserConfig) {\n var indentUnit = config.indentUnit,\n statementIndentUnit = parserConfig.statementIndentUnit || indentUnit,\n dontAlignCalls = parserConfig.dontAlignCalls,\n keywords = parserConfig.keywords || {},\n types = parserConfig.types || {},\n builtin = parserConfig.builtin || {},\n blockKeywords = parserConfig.blockKeywords || {},\n defKeywords = parserConfig.defKeywords || {},\n atoms = parserConfig.atoms || {},\n hooks = parserConfig.hooks || {},\n multiLineStrings = parserConfig.multiLineStrings,\n indentStatements = parserConfig.indentStatements !== false,\n indentSwitch = parserConfig.indentSwitch !== false,\n namespaceSeparator = parserConfig.namespaceSeparator,\n isPunctuationChar = parserConfig.isPunctuationChar || /[\\[\\]{}\\(\\),;\\:\\.]/,\n numberStart = parserConfig.numberStart || /[\\d\\.]/,\n number = parserConfig.number || /^(?:0x[a-f\\d]+|0b[01]+|(?:\\d+\\.?\\d*|\\.\\d+)(?:e[-+]?\\d+)?)(u|ll?|l|f)?/i,\n isOperatorChar = parserConfig.isOperatorChar || /[+\\-*&%=<>!?|\\/]/,\n isIdentifierChar = parserConfig.isIdentifierChar || /[\\w\\$_\\xa1-\\uffff]/,\n // An optional function that takes a {string} token and returns true if it\n // should be treated as a builtin.\n isReservedIdentifier = parserConfig.isReservedIdentifier || false;\n\n var curPunc, isDefKeyword;\n\n function tokenBase(stream, state) {\n var ch = stream.next();\n if (hooks[ch]) {\n var result = hooks[ch](stream, state);\n if (result !== false) return result;\n }\n if (ch == '\"' || ch == \"'\") {\n state.tokenize = tokenString(ch);\n return state.tokenize(stream, state);\n }\n if (numberStart.test(ch)) {\n stream.backUp(1)\n if (stream.match(number)) return \"number\"\n stream.next()\n }\n if (isPunctuationChar.test(ch)) {\n curPunc = ch;\n return null;\n }\n if (ch == \"/\") {\n if (stream.eat(\"*\")) {\n state.tokenize = tokenComment;\n return tokenComment(stream, state);\n }\n if (stream.eat(\"/\")) {\n stream.skipToEnd();\n return \"comment\";\n }\n }\n if (isOperatorChar.test(ch)) {\n while (!stream.match(/^\\/[\\/*]/, false) && stream.eat(isOperatorChar)) {}\n return \"operator\";\n }\n stream.eatWhile(isIdentifierChar);\n if (namespaceSeparator) while (stream.match(namespaceSeparator))\n stream.eatWhile(isIdentifierChar);\n\n var cur = stream.current();\n if (contains(keywords, cur)) {\n if (contains(blockKeywords, cur)) curPunc = \"newstatement\";\n if (contains(defKeywords, cur)) isDefKeyword = true;\n return \"keyword\";\n }\n if (contains(types, cur)) return \"type\";\n if (contains(builtin, cur)\n || (isReservedIdentifier && isReservedIdentifier(cur))) {\n if (contains(blockKeywords, cur)) curPunc = \"newstatement\";\n return \"builtin\";\n }\n if (contains(atoms, cur)) return \"atom\";\n return \"variable\";\n }\n\n function tokenString(quote) {\n return function(stream, state) {\n var escaped = false, next, end = false;\n while ((next = stream.next()) != null) {\n if (next == quote && !escaped) {end = true; break;}\n escaped = !escaped && next == \"\\\\\";\n }\n if (end || !(escaped || multiLineStrings))\n state.tokenize = null;\n return \"string\";\n };\n }\n\n function tokenComment(stream, state) {\n var maybeEnd = false, ch;\n while (ch = stream.next()) {\n if (ch == \"/\" && maybeEnd) {\n state.tokenize = null;\n break;\n }\n maybeEnd = (ch == \"*\");\n }\n return \"comment\";\n }\n\n function maybeEOL(stream, state) {\n if (parserConfig.typeFirstDefinitions && stream.eol() && isTopScope(state.context))\n state.typeAtEndOfLine = typeBefore(stream, state, stream.pos)\n }\n\n // Interface\n\n return {\n startState: function(basecolumn) {\n return {\n tokenize: null,\n context: new Context((basecolumn || 0) - indentUnit, 0, \"top\", null, false),\n indented: 0,\n startOfLine: true,\n prevToken: null\n };\n },\n\n token: function(stream, state) {\n var ctx = state.context;\n if (stream.sol()) {\n if (ctx.align == null) ctx.align = false;\n state.indented = stream.indentation();\n state.startOfLine = true;\n }\n if (stream.eatSpace()) { maybeEOL(stream, state); return null; }\n curPunc = isDefKeyword = null;\n var style = (state.tokenize || tokenBase)(stream, state);\n if (style == \"comment\" || style == \"meta\") return style;\n if (ctx.align == null) ctx.align = true;\n\n if (curPunc == \";\" || curPunc == \":\" || (curPunc == \",\" && stream.match(/^\\s*(?:\\/\\/.*)?$/, false)))\n while (state.context.type == \"statement\") popContext(state);\n else if (curPunc == \"{\") pushContext(state, stream.column(), \"}\");\n else if (curPunc == \"[\") pushContext(state, stream.column(), \"]\");\n else if (curPunc == \"(\") pushContext(state, stream.column(), \")\");\n else if (curPunc == \"}\") {\n while (ctx.type == \"statement\") ctx = popContext(state);\n if (ctx.type == \"}\") ctx = popContext(state);\n while (ctx.type == \"statement\") ctx = popContext(state);\n }\n else if (curPunc == ctx.type) popContext(state);\n else if (indentStatements &&\n (((ctx.type == \"}\" || ctx.type == \"top\") && curPunc != \";\") ||\n (ctx.type == \"statement\" && curPunc == \"newstatement\"))) {\n pushContext(state, stream.column(), \"statement\", stream.current());\n }\n\n if (style == \"variable\" &&\n ((state.prevToken == \"def\" ||\n (parserConfig.typeFirstDefinitions && typeBefore(stream, state, stream.start) &&\n isTopScope(state.context) && stream.match(/^\\s*\\(/, false)))))\n style = \"def\";\n\n if (hooks.token) {\n var result = hooks.token(stream, state, style);\n if (result !== undefined) style = result;\n }\n\n if (style == \"def\" && parserConfig.styleDefs === false) style = \"variable\";\n\n state.startOfLine = false;\n state.prevToken = isDefKeyword ? \"def\" : style || curPunc;\n maybeEOL(stream, state);\n return style;\n },\n\n indent: function(state, textAfter) {\n if (state.tokenize != tokenBase && state.tokenize != null || state.typeAtEndOfLine && isTopScope(state.context))\n return CodeMirror.Pass;\n var ctx = state.context, firstChar = textAfter && textAfter.charAt(0);\n var closing = firstChar == ctx.type;\n if (ctx.type == \"statement\" && firstChar == \"}\") ctx = ctx.prev;\n if (parserConfig.dontIndentStatements)\n while (ctx.type == \"statement\" && parserConfig.dontIndentStatements.test(ctx.info))\n ctx = ctx.prev\n if (hooks.indent) {\n var hook = hooks.indent(state, ctx, textAfter, indentUnit);\n if (typeof hook == \"number\") return hook\n }\n var switchBlock = ctx.prev && ctx.prev.info == \"switch\";\n if (parserConfig.allmanIndentation && /[{(]/.test(firstChar)) {\n while (ctx.type != \"top\" && ctx.type != \"}\") ctx = ctx.prev\n return ctx.indented\n }\n if (ctx.type == \"statement\")\n return ctx.indented + (firstChar == \"{\" ? 0 : statementIndentUnit);\n if (ctx.align && (!dontAlignCalls || ctx.type != \")\"))\n return ctx.column + (closing ? 0 : 1);\n if (ctx.type == \")\" && !closing)\n return ctx.indented + statementIndentUnit;\n\n return ctx.indented + (closing ? 0 : indentUnit) +\n (!closing && switchBlock && !/^(?:case|default)\\b/.test(textAfter) ? indentUnit : 0);\n },\n\n electricInput: indentSwitch ? /^\\s*(?:case .*?:|default:|\\{\\}?|\\})$/ : /^\\s*[{}]$/,\n blockCommentStart: \"/*\",\n blockCommentEnd: \"*/\",\n blockCommentContinue: \" * \",\n lineComment: \"//\",\n fold: \"brace\"\n };\n});\n\n function words(str) {\n var obj = {}, words = str.split(\" \");\n for (var i = 0; i < words.length; ++i) obj[words[i]] = true;\n return obj;\n }\n function contains(words, word) {\n if (typeof words === \"function\") {\n return words(word);\n } else {\n return words.propertyIsEnumerable(word);\n }\n }\n var cKeywords = \"auto if break case register continue return default do sizeof \" +\n \"static else struct switch extern typedef union for goto while enum const \" +\n \"volatile inline restrict asm fortran\";\n\n // Keywords from https://en.cppreference.com/w/cpp/keyword includes C++20.\n var cppKeywords = \"alignas alignof and and_eq audit axiom bitand bitor catch \" +\n \"class compl concept constexpr const_cast decltype delete dynamic_cast \" +\n \"explicit export final friend import module mutable namespace new noexcept \" +\n \"not not_eq operator or or_eq override private protected public \" +\n \"reinterpret_cast requires static_assert static_cast template this \" +\n \"thread_local throw try typeid typename using virtual xor xor_eq\";\n\n var objCKeywords = \"bycopy byref in inout oneway out self super atomic nonatomic retain copy \" +\n \"readwrite readonly strong weak assign typeof nullable nonnull null_resettable _cmd \" +\n \"@interface @implementation @end @protocol @encode @property @synthesize @dynamic @class \" +\n \"@public @package @private @protected @required @optional @try @catch @finally @import \" +\n \"@selector @encode @defs @synchronized @autoreleasepool @compatibility_alias @available\";\n\n var objCBuiltins = \"FOUNDATION_EXPORT FOUNDATION_EXTERN NS_INLINE NS_FORMAT_FUNCTION \" +\n \" NS_RETURNS_RETAINEDNS_ERROR_ENUM NS_RETURNS_NOT_RETAINED NS_RETURNS_INNER_POINTER \" +\n \"NS_DESIGNATED_INITIALIZER NS_ENUM NS_OPTIONS NS_REQUIRES_NIL_TERMINATION \" +\n \"NS_ASSUME_NONNULL_BEGIN NS_ASSUME_NONNULL_END NS_SWIFT_NAME NS_REFINED_FOR_SWIFT\"\n\n // Do not use this. Use the cTypes function below. This is global just to avoid\n // excessive calls when cTypes is being called multiple times during a parse.\n var basicCTypes = words(\"int long char short double float unsigned signed \" +\n \"void bool\");\n\n // Do not use this. Use the objCTypes function below. This is global just to avoid\n // excessive calls when objCTypes is being called multiple times during a parse.\n var basicObjCTypes = words(\"SEL instancetype id Class Protocol BOOL\");\n\n // Returns true if identifier is a \"C\" type.\n // C type is defined as those that are reserved by the compiler (basicTypes),\n // and those that end in _t (Reserved by POSIX for types)\n // http://www.gnu.org/software/libc/manual/html_node/Reserved-Names.html\n function cTypes(identifier) {\n return contains(basicCTypes, identifier) || /.+_t$/.test(identifier);\n }\n\n // Returns true if identifier is a \"Objective C\" type.\n function objCTypes(identifier) {\n return cTypes(identifier) || contains(basicObjCTypes, identifier);\n }\n\n var cBlockKeywords = \"case do else for if switch while struct enum union\";\n var cDefKeywords = \"struct enum union\";\n\n function cppHook(stream, state) {\n if (!state.startOfLine) return false\n for (var ch, next = null; ch = stream.peek();) {\n if (ch == \"\\\\\" && stream.match(/^.$/)) {\n next = cppHook\n break\n } else if (ch == \"/\" && stream.match(/^\\/[\\/\\*]/, false)) {\n break\n }\n stream.next()\n }\n state.tokenize = next\n return \"meta\"\n }\n\n function pointerHook(_stream, state) {\n if (state.prevToken == \"type\") return \"type\";\n return false;\n }\n\n // For C and C++ (and ObjC): identifiers starting with __\n // or _ followed by a capital letter are reserved for the compiler.\n function cIsReservedIdentifier(token) {\n if (!token || token.length < 2) return false;\n if (token[0] != '_') return false;\n return (token[1] == '_') || (token[1] !== token[1].toLowerCase());\n }\n\n function cpp14Literal(stream) {\n stream.eatWhile(/[\\w\\.']/);\n return \"number\";\n }\n\n function cpp11StringHook(stream, state) {\n stream.backUp(1);\n // Raw strings.\n if (stream.match(/^(?:R|u8R|uR|UR|LR)/)) {\n var match = stream.match(/^\"([^\\s\\\\()]{0,16})\\(/);\n if (!match) {\n return false;\n }\n state.cpp11RawStringDelim = match[1];\n state.tokenize = tokenRawString;\n return tokenRawString(stream, state);\n }\n // Unicode strings/chars.\n if (stream.match(/^(?:u8|u|U|L)/)) {\n if (stream.match(/^[\"']/, /* eat */ false)) {\n return \"string\";\n }\n return false;\n }\n // Ignore this hook.\n stream.next();\n return false;\n }\n\n function cppLooksLikeConstructor(word) {\n var lastTwo = /(\\w+)::~?(\\w+)$/.exec(word);\n return lastTwo && lastTwo[1] == lastTwo[2];\n }\n\n // C#-style strings where \"\" escapes a quote.\n function tokenAtString(stream, state) {\n var next;\n while ((next = stream.next()) != null) {\n if (next == '\"' && !stream.eat('\"')) {\n state.tokenize = null;\n break;\n }\n }\n return \"string\";\n }\n\n // C++11 raw string literal is \"( anything )\", where\n // can be a string up to 16 characters long.\n function tokenRawString(stream, state) {\n // Escape characters that have special regex meanings.\n var delim = state.cpp11RawStringDelim.replace(/[^\\w\\s]/g, '\\\\$&');\n var match = stream.match(new RegExp(\".*?\\\\)\" + delim + '\"'));\n if (match)\n state.tokenize = null;\n else\n stream.skipToEnd();\n return \"string\";\n }\n\n function def(mimes, mode) {\n if (typeof mimes == \"string\") mimes = [mimes];\n var words = [];\n function add(obj) {\n if (obj) for (var prop in obj) if (obj.hasOwnProperty(prop))\n words.push(prop);\n }\n add(mode.keywords);\n add(mode.types);\n add(mode.builtin);\n add(mode.atoms);\n if (words.length) {\n mode.helperType = mimes[0];\n CodeMirror.registerHelper(\"hintWords\", mimes[0], words);\n }\n\n for (var i = 0; i < mimes.length; ++i)\n CodeMirror.defineMIME(mimes[i], mode);\n }\n\n def([\"text/x-csrc\", \"text/x-c\", \"text/x-chdr\"], {\n name: \"clike\",\n keywords: words(cKeywords),\n types: cTypes,\n blockKeywords: words(cBlockKeywords),\n defKeywords: words(cDefKeywords),\n typeFirstDefinitions: true,\n atoms: words(\"NULL true false\"),\n isReservedIdentifier: cIsReservedIdentifier,\n hooks: {\n \"#\": cppHook,\n \"*\": pointerHook,\n },\n modeProps: {fold: [\"brace\", \"include\"]}\n });\n\n def([\"text/x-c++src\", \"text/x-c++hdr\"], {\n name: \"clike\",\n keywords: words(cKeywords + \" \" + cppKeywords),\n types: cTypes,\n blockKeywords: words(cBlockKeywords + \" class try catch\"),\n defKeywords: words(cDefKeywords + \" class namespace\"),\n typeFirstDefinitions: true,\n atoms: words(\"true false NULL nullptr\"),\n dontIndentStatements: /^template$/,\n isIdentifierChar: /[\\w\\$_~\\xa1-\\uffff]/,\n isReservedIdentifier: cIsReservedIdentifier,\n hooks: {\n \"#\": cppHook,\n \"*\": pointerHook,\n \"u\": cpp11StringHook,\n \"U\": cpp11StringHook,\n \"L\": cpp11StringHook,\n \"R\": cpp11StringHook,\n \"0\": cpp14Literal,\n \"1\": cpp14Literal,\n \"2\": cpp14Literal,\n \"3\": cpp14Literal,\n \"4\": cpp14Literal,\n \"5\": cpp14Literal,\n \"6\": cpp14Literal,\n \"7\": cpp14Literal,\n \"8\": cpp14Literal,\n \"9\": cpp14Literal,\n token: function(stream, state, style) {\n if (style == \"variable\" && stream.peek() == \"(\" &&\n (state.prevToken == \";\" || state.prevToken == null ||\n state.prevToken == \"}\") &&\n cppLooksLikeConstructor(stream.current()))\n return \"def\";\n }\n },\n namespaceSeparator: \"::\",\n modeProps: {fold: [\"brace\", \"include\"]}\n });\n\n def(\"text/x-java\", {\n name: \"clike\",\n keywords: words(\"abstract assert break case catch class const continue default \" +\n \"do else enum extends final finally for goto if implements import \" +\n \"instanceof interface native new package private protected public \" +\n \"return static strictfp super switch synchronized this throw throws transient \" +\n \"try volatile while @interface\"),\n types: words(\"var byte short int long float double boolean char void Boolean Byte Character Double Float \" +\n \"Integer Long Number Object Short String StringBuffer StringBuilder Void\"),\n blockKeywords: words(\"catch class do else finally for if switch try while\"),\n defKeywords: words(\"class interface enum @interface\"),\n typeFirstDefinitions: true,\n atoms: words(\"true false null\"),\n number: /^(?:0x[a-f\\d_]+|0b[01_]+|(?:[\\d_]+\\.?\\d*|\\.\\d+)(?:e[-+]?[\\d_]+)?)(u|ll?|l|f)?/i,\n hooks: {\n \"@\": function(stream) {\n // Don't match the @interface keyword.\n if (stream.match('interface', false)) return false;\n\n stream.eatWhile(/[\\w\\$_]/);\n return \"meta\";\n },\n '\"': function(stream, state) {\n if (!stream.match(/\"\"$/)) return false;\n state.tokenize = tokenTripleString;\n return state.tokenize(stream, state);\n }\n },\n modeProps: {fold: [\"brace\", \"import\"]}\n });\n\n def(\"text/x-csharp\", {\n name: \"clike\",\n keywords: words(\"abstract as async await base break case catch checked class const continue\" +\n \" default delegate do else enum event explicit extern finally fixed for\" +\n \" foreach goto if implicit in init interface internal is lock namespace new\" +\n \" operator out override params private protected public readonly record ref required return sealed\" +\n \" sizeof stackalloc static struct switch this throw try typeof unchecked\" +\n \" unsafe using virtual void volatile while add alias ascending descending dynamic from get\" +\n \" global group into join let orderby partial remove select set value var yield\"),\n types: words(\"Action Boolean Byte Char DateTime DateTimeOffset Decimal Double Func\" +\n \" Guid Int16 Int32 Int64 Object SByte Single String Task TimeSpan UInt16 UInt32\" +\n \" UInt64 bool byte char decimal double short int long object\" +\n \" sbyte float string ushort uint ulong\"),\n blockKeywords: words(\"catch class do else finally for foreach if struct switch try while\"),\n defKeywords: words(\"class interface namespace record struct var\"),\n typeFirstDefinitions: true,\n atoms: words(\"true false null\"),\n hooks: {\n \"@\": function(stream, state) {\n if (stream.eat('\"')) {\n state.tokenize = tokenAtString;\n return tokenAtString(stream, state);\n }\n stream.eatWhile(/[\\w\\$_]/);\n return \"meta\";\n }\n }\n });\n\n function tokenTripleString(stream, state) {\n var escaped = false;\n while (!stream.eol()) {\n if (!escaped && stream.match('\"\"\"')) {\n state.tokenize = null;\n break;\n }\n escaped = stream.next() == \"\\\\\" && !escaped;\n }\n return \"string\";\n }\n\n function tokenNestedComment(depth) {\n return function (stream, state) {\n var ch\n while (ch = stream.next()) {\n if (ch == \"*\" && stream.eat(\"/\")) {\n if (depth == 1) {\n state.tokenize = null\n break\n } else {\n state.tokenize = tokenNestedComment(depth - 1)\n return state.tokenize(stream, state)\n }\n } else if (ch == \"/\" && stream.eat(\"*\")) {\n state.tokenize = tokenNestedComment(depth + 1)\n return state.tokenize(stream, state)\n }\n }\n return \"comment\"\n }\n }\n\n def(\"text/x-scala\", {\n name: \"clike\",\n keywords: words(\n /* scala */\n \"abstract case catch class def do else extends final finally for forSome if \" +\n \"implicit import lazy match new null object override package private protected return \" +\n \"sealed super this throw trait try type val var while with yield _ \" +\n\n /* package scala */\n \"assert assume require print println printf readLine readBoolean readByte readShort \" +\n \"readChar readInt readLong readFloat readDouble\"\n ),\n types: words(\n \"AnyVal App Application Array BufferedIterator BigDecimal BigInt Char Console Either \" +\n \"Enumeration Equiv Error Exception Fractional Function IndexedSeq Int Integral Iterable \" +\n \"Iterator List Map Numeric Nil NotNull Option Ordered Ordering PartialFunction PartialOrdering \" +\n \"Product Proxy Range Responder Seq Serializable Set Specializable Stream StringBuilder \" +\n \"StringContext Symbol Throwable Traversable TraversableOnce Tuple Unit Vector \" +\n\n /* package java.lang */\n \"Boolean Byte Character CharSequence Class ClassLoader Cloneable Comparable \" +\n \"Compiler Double Exception Float Integer Long Math Number Object Package Pair Process \" +\n \"Runtime Runnable SecurityManager Short StackTraceElement StrictMath String \" +\n \"StringBuffer System Thread ThreadGroup ThreadLocal Throwable Triple Void\"\n ),\n multiLineStrings: true,\n blockKeywords: words(\"catch class enum do else finally for forSome if match switch try while\"),\n defKeywords: words(\"class enum def object package trait type val var\"),\n atoms: words(\"true false null\"),\n indentStatements: false,\n indentSwitch: false,\n isOperatorChar: /[+\\-*&%=<>!?|\\/#:@]/,\n hooks: {\n \"@\": function(stream) {\n stream.eatWhile(/[\\w\\$_]/);\n return \"meta\";\n },\n '\"': function(stream, state) {\n if (!stream.match('\"\"')) return false;\n state.tokenize = tokenTripleString;\n return state.tokenize(stream, state);\n },\n \"'\": function(stream) {\n if (stream.match(/^(\\\\[^'\\s]+|[^\\\\'])'/)) return \"string-2\"\n stream.eatWhile(/[\\w\\$_\\xa1-\\uffff]/);\n return \"atom\";\n },\n \"=\": function(stream, state) {\n var cx = state.context\n if (cx.type == \"}\" && cx.align && stream.eat(\">\")) {\n state.context = new Context(cx.indented, cx.column, cx.type, cx.info, null, cx.prev)\n return \"operator\"\n } else {\n return false\n }\n },\n\n \"/\": function(stream, state) {\n if (!stream.eat(\"*\")) return false\n state.tokenize = tokenNestedComment(1)\n return state.tokenize(stream, state)\n }\n },\n modeProps: {closeBrackets: {pairs: '()[]{}\"\"', triples: '\"'}}\n });\n\n function tokenKotlinString(tripleString){\n return function (stream, state) {\n var escaped = false, next, end = false;\n while (!stream.eol()) {\n if (!tripleString && !escaped && stream.match('\"') ) {end = true; break;}\n if (tripleString && stream.match('\"\"\"')) {end = true; break;}\n next = stream.next();\n if(!escaped && next == \"$\" && stream.match('{'))\n stream.skipTo(\"}\");\n escaped = !escaped && next == \"\\\\\" && !tripleString;\n }\n if (end || !tripleString)\n state.tokenize = null;\n return \"string\";\n }\n }\n\n def(\"text/x-kotlin\", {\n name: \"clike\",\n keywords: words(\n /*keywords*/\n \"package as typealias class interface this super val operator \" +\n \"var fun for is in This throw return annotation \" +\n \"break continue object if else while do try when !in !is as? \" +\n\n /*soft keywords*/\n \"file import where by get set abstract enum open inner override private public internal \" +\n \"protected catch finally out final vararg reified dynamic companion constructor init \" +\n \"sealed field property receiver param sparam lateinit data inline noinline tailrec \" +\n \"external annotation crossinline const operator infix suspend actual expect setparam value\"\n ),\n types: words(\n /* package java.lang */\n \"Boolean Byte Character CharSequence Class ClassLoader Cloneable Comparable \" +\n \"Compiler Double Exception Float Integer Long Math Number Object Package Pair Process \" +\n \"Runtime Runnable SecurityManager Short StackTraceElement StrictMath String \" +\n \"StringBuffer System Thread ThreadGroup ThreadLocal Throwable Triple Void Annotation Any BooleanArray \" +\n \"ByteArray Char CharArray DeprecationLevel DoubleArray Enum FloatArray Function Int IntArray Lazy \" +\n \"LazyThreadSafetyMode LongArray Nothing ShortArray Unit\"\n ),\n intendSwitch: false,\n indentStatements: false,\n multiLineStrings: true,\n number: /^(?:0x[a-f\\d_]+|0b[01_]+|(?:[\\d_]+(\\.\\d+)?|\\.\\d+)(?:e[-+]?[\\d_]+)?)(u|ll?|l|f)?/i,\n blockKeywords: words(\"catch class do else finally for if where try while enum\"),\n defKeywords: words(\"class val var object interface fun\"),\n atoms: words(\"true false null this\"),\n hooks: {\n \"@\": function(stream) {\n stream.eatWhile(/[\\w\\$_]/);\n return \"meta\";\n },\n '*': function(_stream, state) {\n return state.prevToken == '.' ? 'variable' : 'operator';\n },\n '\"': function(stream, state) {\n state.tokenize = tokenKotlinString(stream.match('\"\"'));\n return state.tokenize(stream, state);\n },\n \"/\": function(stream, state) {\n if (!stream.eat(\"*\")) return false;\n state.tokenize = tokenNestedComment(1);\n return state.tokenize(stream, state)\n },\n indent: function(state, ctx, textAfter, indentUnit) {\n var firstChar = textAfter && textAfter.charAt(0);\n if ((state.prevToken == \"}\" || state.prevToken == \")\") && textAfter == \"\")\n return state.indented;\n if ((state.prevToken == \"operator\" && textAfter != \"}\" && state.context.type != \"}\") ||\n state.prevToken == \"variable\" && firstChar == \".\" ||\n (state.prevToken == \"}\" || state.prevToken == \")\") && firstChar == \".\")\n return indentUnit * 2 + ctx.indented;\n if (ctx.align && ctx.type == \"}\")\n return ctx.indented + (state.context.type == (textAfter || \"\").charAt(0) ? 0 : indentUnit);\n }\n },\n modeProps: {closeBrackets: {triples: '\"'}}\n });\n\n def([\"x-shader/x-vertex\", \"x-shader/x-fragment\"], {\n name: \"clike\",\n keywords: words(\"sampler1D sampler2D sampler3D samplerCube \" +\n \"sampler1DShadow sampler2DShadow \" +\n \"const attribute uniform varying \" +\n \"break continue discard return \" +\n \"for while do if else struct \" +\n \"in out inout\"),\n types: words(\"float int bool void \" +\n \"vec2 vec3 vec4 ivec2 ivec3 ivec4 bvec2 bvec3 bvec4 \" +\n \"mat2 mat3 mat4\"),\n blockKeywords: words(\"for while do if else struct\"),\n builtin: words(\"radians degrees sin cos tan asin acos atan \" +\n \"pow exp log exp2 sqrt inversesqrt \" +\n \"abs sign floor ceil fract mod min max clamp mix step smoothstep \" +\n \"length distance dot cross normalize ftransform faceforward \" +\n \"reflect refract matrixCompMult \" +\n \"lessThan lessThanEqual greaterThan greaterThanEqual \" +\n \"equal notEqual any all not \" +\n \"texture1D texture1DProj texture1DLod texture1DProjLod \" +\n \"texture2D texture2DProj texture2DLod texture2DProjLod \" +\n \"texture3D texture3DProj texture3DLod texture3DProjLod \" +\n \"textureCube textureCubeLod \" +\n \"shadow1D shadow2D shadow1DProj shadow2DProj \" +\n \"shadow1DLod shadow2DLod shadow1DProjLod shadow2DProjLod \" +\n \"dFdx dFdy fwidth \" +\n \"noise1 noise2 noise3 noise4\"),\n atoms: words(\"true false \" +\n \"gl_FragColor gl_SecondaryColor gl_Normal gl_Vertex \" +\n \"gl_MultiTexCoord0 gl_MultiTexCoord1 gl_MultiTexCoord2 gl_MultiTexCoord3 \" +\n \"gl_MultiTexCoord4 gl_MultiTexCoord5 gl_MultiTexCoord6 gl_MultiTexCoord7 \" +\n \"gl_FogCoord gl_PointCoord \" +\n \"gl_Position gl_PointSize gl_ClipVertex \" +\n \"gl_FrontColor gl_BackColor gl_FrontSecondaryColor gl_BackSecondaryColor \" +\n \"gl_TexCoord gl_FogFragCoord \" +\n \"gl_FragCoord gl_FrontFacing \" +\n \"gl_FragData gl_FragDepth \" +\n \"gl_ModelViewMatrix gl_ProjectionMatrix gl_ModelViewProjectionMatrix \" +\n \"gl_TextureMatrix gl_NormalMatrix gl_ModelViewMatrixInverse \" +\n \"gl_ProjectionMatrixInverse gl_ModelViewProjectionMatrixInverse \" +\n \"gl_TextureMatrixTranspose gl_ModelViewMatrixInverseTranspose \" +\n \"gl_ProjectionMatrixInverseTranspose \" +\n \"gl_ModelViewProjectionMatrixInverseTranspose \" +\n \"gl_TextureMatrixInverseTranspose \" +\n \"gl_NormalScale gl_DepthRange gl_ClipPlane \" +\n \"gl_Point gl_FrontMaterial gl_BackMaterial gl_LightSource gl_LightModel \" +\n \"gl_FrontLightModelProduct gl_BackLightModelProduct \" +\n \"gl_TextureColor gl_EyePlaneS gl_EyePlaneT gl_EyePlaneR gl_EyePlaneQ \" +\n \"gl_FogParameters \" +\n \"gl_MaxLights gl_MaxClipPlanes gl_MaxTextureUnits gl_MaxTextureCoords \" +\n \"gl_MaxVertexAttribs gl_MaxVertexUniformComponents gl_MaxVaryingFloats \" +\n \"gl_MaxVertexTextureImageUnits gl_MaxTextureImageUnits \" +\n \"gl_MaxFragmentUniformComponents gl_MaxCombineTextureImageUnits \" +\n \"gl_MaxDrawBuffers\"),\n indentSwitch: false,\n hooks: {\"#\": cppHook},\n modeProps: {fold: [\"brace\", \"include\"]}\n });\n\n def(\"text/x-nesc\", {\n name: \"clike\",\n keywords: words(cKeywords + \" as atomic async call command component components configuration event generic \" +\n \"implementation includes interface module new norace nx_struct nx_union post provides \" +\n \"signal task uses abstract extends\"),\n types: cTypes,\n blockKeywords: words(cBlockKeywords),\n atoms: words(\"null true false\"),\n hooks: {\"#\": cppHook},\n modeProps: {fold: [\"brace\", \"include\"]}\n });\n\n def(\"text/x-objectivec\", {\n name: \"clike\",\n keywords: words(cKeywords + \" \" + objCKeywords),\n types: objCTypes,\n builtin: words(objCBuiltins),\n blockKeywords: words(cBlockKeywords + \" @synthesize @try @catch @finally @autoreleasepool @synchronized\"),\n defKeywords: words(cDefKeywords + \" @interface @implementation @protocol @class\"),\n dontIndentStatements: /^@.*$/,\n typeFirstDefinitions: true,\n atoms: words(\"YES NO NULL Nil nil true false nullptr\"),\n isReservedIdentifier: cIsReservedIdentifier,\n hooks: {\n \"#\": cppHook,\n \"*\": pointerHook,\n },\n modeProps: {fold: [\"brace\", \"include\"]}\n });\n\n def(\"text/x-objectivec++\", {\n name: \"clike\",\n keywords: words(cKeywords + \" \" + objCKeywords + \" \" + cppKeywords),\n types: objCTypes,\n builtin: words(objCBuiltins),\n blockKeywords: words(cBlockKeywords + \" @synthesize @try @catch @finally @autoreleasepool @synchronized class try catch\"),\n defKeywords: words(cDefKeywords + \" @interface @implementation @protocol @class class namespace\"),\n dontIndentStatements: /^@.*$|^template$/,\n typeFirstDefinitions: true,\n atoms: words(\"YES NO NULL Nil nil true false nullptr\"),\n isReservedIdentifier: cIsReservedIdentifier,\n hooks: {\n \"#\": cppHook,\n \"*\": pointerHook,\n \"u\": cpp11StringHook,\n \"U\": cpp11StringHook,\n \"L\": cpp11StringHook,\n \"R\": cpp11StringHook,\n \"0\": cpp14Literal,\n \"1\": cpp14Literal,\n \"2\": cpp14Literal,\n \"3\": cpp14Literal,\n \"4\": cpp14Literal,\n \"5\": cpp14Literal,\n \"6\": cpp14Literal,\n \"7\": cpp14Literal,\n \"8\": cpp14Literal,\n \"9\": cpp14Literal,\n token: function(stream, state, style) {\n if (style == \"variable\" && stream.peek() == \"(\" &&\n (state.prevToken == \";\" || state.prevToken == null ||\n state.prevToken == \"}\") &&\n cppLooksLikeConstructor(stream.current()))\n return \"def\";\n }\n },\n namespaceSeparator: \"::\",\n modeProps: {fold: [\"brace\", \"include\"]}\n });\n\n def(\"text/x-squirrel\", {\n name: \"clike\",\n keywords: words(\"base break clone continue const default delete enum extends function in class\" +\n \" foreach local resume return this throw typeof yield constructor instanceof static\"),\n types: cTypes,\n blockKeywords: words(\"case catch class else for foreach if switch try while\"),\n defKeywords: words(\"function local class\"),\n typeFirstDefinitions: true,\n atoms: words(\"true false null\"),\n hooks: {\"#\": cppHook},\n modeProps: {fold: [\"brace\", \"include\"]}\n });\n\n // Ceylon Strings need to deal with interpolation\n var stringTokenizer = null;\n function tokenCeylonString(type) {\n return function(stream, state) {\n var escaped = false, next, end = false;\n while (!stream.eol()) {\n if (!escaped && stream.match('\"') &&\n (type == \"single\" || stream.match('\"\"'))) {\n end = true;\n break;\n }\n if (!escaped && stream.match('``')) {\n stringTokenizer = tokenCeylonString(type);\n end = true;\n break;\n }\n next = stream.next();\n escaped = type == \"single\" && !escaped && next == \"\\\\\";\n }\n if (end)\n state.tokenize = null;\n return \"string\";\n }\n }\n\n def(\"text/x-ceylon\", {\n name: \"clike\",\n keywords: words(\"abstracts alias assembly assert assign break case catch class continue dynamic else\" +\n \" exists extends finally for function given if import in interface is let module new\" +\n \" nonempty object of out outer package return satisfies super switch then this throw\" +\n \" try value void while\"),\n types: function(word) {\n // In Ceylon all identifiers that start with an uppercase are types\n var first = word.charAt(0);\n return (first === first.toUpperCase() && first !== first.toLowerCase());\n },\n blockKeywords: words(\"case catch class dynamic else finally for function if interface module new object switch try while\"),\n defKeywords: words(\"class dynamic function interface module object package value\"),\n builtin: words(\"abstract actual aliased annotation by default deprecated doc final formal late license\" +\n \" native optional sealed see serializable shared suppressWarnings tagged throws variable\"),\n isPunctuationChar: /[\\[\\]{}\\(\\),;\\:\\.`]/,\n isOperatorChar: /[+\\-*&%=<>!?|^~:\\/]/,\n numberStart: /[\\d#$]/,\n number: /^(?:#[\\da-fA-F_]+|\\$[01_]+|[\\d_]+[kMGTPmunpf]?|[\\d_]+\\.[\\d_]+(?:[eE][-+]?\\d+|[kMGTPmunpf]|)|)/i,\n multiLineStrings: true,\n typeFirstDefinitions: true,\n atoms: words(\"true false null larger smaller equal empty finished\"),\n indentSwitch: false,\n styleDefs: false,\n hooks: {\n \"@\": function(stream) {\n stream.eatWhile(/[\\w\\$_]/);\n return \"meta\";\n },\n '\"': function(stream, state) {\n state.tokenize = tokenCeylonString(stream.match('\"\"') ? \"triple\" : \"single\");\n return state.tokenize(stream, state);\n },\n '`': function(stream, state) {\n if (!stringTokenizer || !stream.match('`')) return false;\n state.tokenize = stringTokenizer;\n stringTokenizer = null;\n return state.tokenize(stream, state);\n },\n \"'\": function(stream) {\n stream.eatWhile(/[\\w\\$_\\xa1-\\uffff]/);\n return \"atom\";\n },\n token: function(_stream, state, style) {\n if ((style == \"variable\" || style == \"type\") &&\n state.prevToken == \".\") {\n return \"variable-2\";\n }\n }\n },\n modeProps: {\n fold: [\"brace\", \"import\"],\n closeBrackets: {triples: '\"'}\n }\n });\n\n});\n", "// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/5/LICENSE\n\n(function(mod) {\n if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n mod(require(\"../../lib/codemirror\"), require(\"../htmlmixed/htmlmixed\"), require(\"../clike/clike\"));\n else if (typeof define == \"function\" && define.amd) // AMD\n define([\"../../lib/codemirror\", \"../htmlmixed/htmlmixed\", \"../clike/clike\"], mod);\n else // Plain browser env\n mod(CodeMirror);\n})(function(CodeMirror) {\n \"use strict\";\n\n function keywords(str) {\n var obj = {}, words = str.split(\" \");\n for (var i = 0; i < words.length; ++i) obj[words[i]] = true;\n return obj;\n }\n\n // Helper for phpString\n function matchSequence(list, end, escapes) {\n if (list.length == 0) return phpString(end);\n return function (stream, state) {\n var patterns = list[0];\n for (var i = 0; i < patterns.length; i++) if (stream.match(patterns[i][0])) {\n state.tokenize = matchSequence(list.slice(1), end);\n return patterns[i][1];\n }\n state.tokenize = phpString(end, escapes);\n return \"string\";\n };\n }\n function phpString(closing, escapes) {\n return function(stream, state) { return phpString_(stream, state, closing, escapes); };\n }\n function phpString_(stream, state, closing, escapes) {\n // \"Complex\" syntax\n if (escapes !== false && stream.match(\"${\", false) || stream.match(\"{$\", false)) {\n state.tokenize = null;\n return \"string\";\n }\n\n // Simple syntax\n if (escapes !== false && stream.match(/^\\$[a-zA-Z_][a-zA-Z0-9_]*/)) {\n // After the variable name there may appear array or object operator.\n if (stream.match(\"[\", false)) {\n // Match array operator\n state.tokenize = matchSequence([\n [[\"[\", null]],\n [[/\\d[\\w\\.]*/, \"number\"],\n [/\\$[a-zA-Z_][a-zA-Z0-9_]*/, \"variable-2\"],\n [/[\\w\\$]+/, \"variable\"]],\n [[\"]\", null]]\n ], closing, escapes);\n }\n if (stream.match(/^->\\w/, false)) {\n // Match object operator\n state.tokenize = matchSequence([\n [[\"->\", null]],\n [[/[\\w]+/, \"variable\"]]\n ], closing, escapes);\n }\n return \"variable-2\";\n }\n\n var escaped = false;\n // Normal string\n while (!stream.eol() &&\n (escaped || escapes === false ||\n (!stream.match(\"{$\", false) &&\n !stream.match(/^(\\$[a-zA-Z_][a-zA-Z0-9_]*|\\$\\{)/, false)))) {\n if (!escaped && stream.match(closing)) {\n state.tokenize = null;\n state.tokStack.pop(); state.tokStack.pop();\n break;\n }\n escaped = stream.next() == \"\\\\\" && !escaped;\n }\n return \"string\";\n }\n\n var phpKeywords = \"abstract and array as break case catch class clone const continue declare default \" +\n \"do else elseif enddeclare endfor endforeach endif endswitch endwhile enum extends final \" +\n \"for foreach function global goto if implements interface instanceof namespace \" +\n \"new or private protected public static switch throw trait try use var while xor \" +\n \"die echo empty exit eval include include_once isset list require require_once return \" +\n \"print unset __halt_compiler self static parent yield insteadof finally readonly match\";\n var phpAtoms = \"true false null TRUE FALSE NULL __CLASS__ __DIR__ __FILE__ __LINE__ __METHOD__ __FUNCTION__ __NAMESPACE__ __TRAIT__\";\n var phpBuiltin = \"func_num_args func_get_arg func_get_args strlen strcmp strncmp strcasecmp strncasecmp each error_reporting define defined trigger_error user_error set_error_handler restore_error_handler get_declared_classes get_loaded_extensions extension_loaded get_extension_funcs debug_backtrace constant bin2hex hex2bin sleep usleep time mktime gmmktime strftime gmstrftime strtotime date gmdate getdate localtime checkdate flush wordwrap htmlspecialchars htmlentities html_entity_decode md5 md5_file crc32 getimagesize image_type_to_mime_type phpinfo phpversion phpcredits strnatcmp strnatcasecmp substr_count strspn strcspn strtok strtoupper strtolower strpos strrpos strrev hebrev hebrevc nl2br basename dirname pathinfo stripslashes stripcslashes strstr stristr strrchr str_shuffle str_word_count strcoll substr substr_replace quotemeta ucfirst ucwords strtr addslashes addcslashes rtrim str_replace str_repeat count_chars chunk_split trim ltrim strip_tags similar_text explode implode setlocale localeconv parse_str str_pad chop strchr sprintf printf vprintf vsprintf sscanf fscanf parse_url urlencode urldecode rawurlencode rawurldecode readlink linkinfo link unlink exec system escapeshellcmd escapeshellarg passthru shell_exec proc_open proc_close rand srand getrandmax mt_rand mt_srand mt_getrandmax base64_decode base64_encode abs ceil floor round is_finite is_nan is_infinite bindec hexdec octdec decbin decoct dechex base_convert number_format fmod ip2long long2ip getenv putenv getopt microtime gettimeofday getrusage uniqid quoted_printable_decode set_time_limit get_cfg_var magic_quotes_runtime set_magic_quotes_runtime get_magic_quotes_gpc get_magic_quotes_runtime import_request_variables error_log serialize unserialize memory_get_usage memory_get_peak_usage var_dump var_export debug_zval_dump print_r highlight_file show_source highlight_string ini_get ini_get_all ini_set ini_alter ini_restore get_include_path set_include_path restore_include_path setcookie header headers_sent connection_aborted connection_status ignore_user_abort parse_ini_file is_uploaded_file move_uploaded_file intval floatval doubleval strval gettype settype is_null is_resource is_bool is_long is_float is_int is_integer is_double is_real is_numeric is_string is_array is_object is_scalar ereg ereg_replace eregi eregi_replace split spliti join sql_regcase dl pclose popen readfile rewind rmdir umask fclose feof fgetc fgets fgetss fread fopen fpassthru ftruncate fstat fseek ftell fflush fwrite fputs mkdir rename copy tempnam tmpfile file file_get_contents file_put_contents stream_select stream_context_create stream_context_set_params stream_context_set_option stream_context_get_options stream_filter_prepend stream_filter_append fgetcsv flock get_meta_tags stream_set_write_buffer set_file_buffer set_socket_blocking stream_set_blocking socket_set_blocking stream_get_meta_data stream_register_wrapper stream_wrapper_register stream_set_timeout socket_set_timeout socket_get_status realpath fnmatch fsockopen pfsockopen pack unpack get_browser crypt opendir closedir chdir getcwd rewinddir readdir dir glob fileatime filectime filegroup fileinode filemtime fileowner fileperms filesize filetype file_exists is_writable is_writeable is_readable is_executable is_file is_dir is_link stat lstat chown touch clearstatcache mail ob_start ob_flush ob_clean ob_end_flush ob_end_clean ob_get_flush ob_get_clean ob_get_length ob_get_level ob_get_status ob_get_contents ob_implicit_flush ob_list_handlers ksort krsort natsort natcasesort asort arsort sort rsort usort uasort uksort shuffle array_walk count end prev next reset current key min max in_array array_search extract compact array_fill range array_multisort array_push array_pop array_shift array_unshift array_splice array_slice array_merge array_merge_recursive array_keys array_values array_count_values array_reverse array_reduce array_pad array_flip array_change_key_case array_rand array_unique array_intersect array_intersect_assoc array_diff array_diff_assoc array_sum array_filter array_map array_chunk array_key_exists array_intersect_key array_combine array_column pos sizeof key_exists assert assert_options version_compare ftok str_rot13 aggregate session_name session_module_name session_save_path session_id session_regenerate_id session_decode session_register session_unregister session_is_registered session_encode session_start session_destroy session_unset session_set_save_handler session_cache_limiter session_cache_expire session_set_cookie_params session_get_cookie_params session_write_close preg_match preg_match_all preg_replace preg_replace_callback preg_split preg_quote preg_grep overload ctype_alnum ctype_alpha ctype_cntrl ctype_digit ctype_lower ctype_graph ctype_print ctype_punct ctype_space ctype_upper ctype_xdigit virtual apache_request_headers apache_note apache_lookup_uri apache_child_terminate apache_setenv apache_response_headers apache_get_version getallheaders mysql_connect mysql_pconnect mysql_close mysql_select_db mysql_create_db mysql_drop_db mysql_query mysql_unbuffered_query mysql_db_query mysql_list_dbs mysql_list_tables mysql_list_fields mysql_list_processes mysql_error mysql_errno mysql_affected_rows mysql_insert_id mysql_result mysql_num_rows mysql_num_fields mysql_fetch_row mysql_fetch_array mysql_fetch_assoc mysql_fetch_object mysql_data_seek mysql_fetch_lengths mysql_fetch_field mysql_field_seek mysql_free_result mysql_field_name mysql_field_table mysql_field_len mysql_field_type mysql_field_flags mysql_escape_string mysql_real_escape_string mysql_stat mysql_thread_id mysql_client_encoding mysql_get_client_info mysql_get_host_info mysql_get_proto_info mysql_get_server_info mysql_info mysql mysql_fieldname mysql_fieldtable mysql_fieldlen mysql_fieldtype mysql_fieldflags mysql_selectdb mysql_createdb mysql_dropdb mysql_freeresult mysql_numfields mysql_numrows mysql_listdbs mysql_listtables mysql_listfields mysql_db_name mysql_dbname mysql_tablename mysql_table_name pg_connect pg_pconnect pg_close pg_connection_status pg_connection_busy pg_connection_reset pg_host pg_dbname pg_port pg_tty pg_options pg_ping pg_query pg_send_query pg_cancel_query pg_fetch_result pg_fetch_row pg_fetch_assoc pg_fetch_array pg_fetch_object pg_fetch_all pg_affected_rows pg_get_result pg_result_seek pg_result_status pg_free_result pg_last_oid pg_num_rows pg_num_fields pg_field_name pg_field_num pg_field_size pg_field_type pg_field_prtlen pg_field_is_null pg_get_notify pg_get_pid pg_result_error pg_last_error pg_last_notice pg_put_line pg_end_copy pg_copy_to pg_copy_from pg_trace pg_untrace pg_lo_create pg_lo_unlink pg_lo_open pg_lo_close pg_lo_read pg_lo_write pg_lo_read_all pg_lo_import pg_lo_export pg_lo_seek pg_lo_tell pg_escape_string pg_escape_bytea pg_unescape_bytea pg_client_encoding pg_set_client_encoding pg_meta_data pg_convert pg_insert pg_update pg_delete pg_select pg_exec pg_getlastoid pg_cmdtuples pg_errormessage pg_numrows pg_numfields pg_fieldname pg_fieldsize pg_fieldtype pg_fieldnum pg_fieldprtlen pg_fieldisnull pg_freeresult pg_result pg_loreadall pg_locreate pg_lounlink pg_loopen pg_loclose pg_loread pg_lowrite pg_loimport pg_loexport http_response_code get_declared_traits getimagesizefromstring socket_import_stream stream_set_chunk_size trait_exists header_register_callback class_uses session_status session_register_shutdown echo print global static exit array empty eval isset unset die include require include_once require_once json_decode json_encode json_last_error json_last_error_msg curl_close curl_copy_handle curl_errno curl_error curl_escape curl_exec curl_file_create curl_getinfo curl_init curl_multi_add_handle curl_multi_close curl_multi_exec curl_multi_getcontent curl_multi_info_read curl_multi_init curl_multi_remove_handle curl_multi_select curl_multi_setopt curl_multi_strerror curl_pause curl_reset curl_setopt_array curl_setopt curl_share_close curl_share_init curl_share_setopt curl_strerror curl_unescape curl_version mysqli_affected_rows mysqli_autocommit mysqli_change_user mysqli_character_set_name mysqli_close mysqli_commit mysqli_connect_errno mysqli_connect_error mysqli_connect mysqli_data_seek mysqli_debug mysqli_dump_debug_info mysqli_errno mysqli_error_list mysqli_error mysqli_fetch_all mysqli_fetch_array mysqli_fetch_assoc mysqli_fetch_field_direct mysqli_fetch_field mysqli_fetch_fields mysqli_fetch_lengths mysqli_fetch_object mysqli_fetch_row mysqli_field_count mysqli_field_seek mysqli_field_tell mysqli_free_result mysqli_get_charset mysqli_get_client_info mysqli_get_client_stats mysqli_get_client_version mysqli_get_connection_stats mysqli_get_host_info mysqli_get_proto_info mysqli_get_server_info mysqli_get_server_version mysqli_info mysqli_init mysqli_insert_id mysqli_kill mysqli_more_results mysqli_multi_query mysqli_next_result mysqli_num_fields mysqli_num_rows mysqli_options mysqli_ping mysqli_prepare mysqli_query mysqli_real_connect mysqli_real_escape_string mysqli_real_query mysqli_reap_async_query mysqli_refresh mysqli_rollback mysqli_select_db mysqli_set_charset mysqli_set_local_infile_default mysqli_set_local_infile_handler mysqli_sqlstate mysqli_ssl_set mysqli_stat mysqli_stmt_init mysqli_store_result mysqli_thread_id mysqli_thread_safe mysqli_use_result mysqli_warning_count\";\n CodeMirror.registerHelper(\"hintWords\", \"php\", [phpKeywords, phpAtoms, phpBuiltin].join(\" \").split(\" \"));\n CodeMirror.registerHelper(\"wordChars\", \"php\", /[\\w$]/);\n\n var phpConfig = {\n name: \"clike\",\n helperType: \"php\",\n keywords: keywords(phpKeywords),\n blockKeywords: keywords(\"catch do else elseif for foreach if switch try while finally\"),\n defKeywords: keywords(\"class enum function interface namespace trait\"),\n atoms: keywords(phpAtoms),\n builtin: keywords(phpBuiltin),\n multiLineStrings: true,\n hooks: {\n \"$\": function(stream) {\n stream.eatWhile(/[\\w\\$_]/);\n return \"variable-2\";\n },\n \"<\": function(stream, state) {\n var before;\n if (before = stream.match(/^<<\\s*/)) {\n var quoted = stream.eat(/['\"]/);\n stream.eatWhile(/[\\w\\.]/);\n var delim = stream.current().slice(before[0].length + (quoted ? 2 : 1));\n if (quoted) stream.eat(quoted);\n if (delim) {\n (state.tokStack || (state.tokStack = [])).push(delim, 0);\n state.tokenize = phpString(delim, quoted != \"'\");\n return \"string\";\n }\n }\n return false;\n },\n \"#\": function(stream) {\n while (!stream.eol() && !stream.match(\"?>\", false)) stream.next();\n return \"comment\";\n },\n \"/\": function(stream) {\n if (stream.eat(\"/\")) {\n while (!stream.eol() && !stream.match(\"?>\", false)) stream.next();\n return \"comment\";\n }\n return false;\n },\n '\"': function(_stream, state) {\n (state.tokStack || (state.tokStack = [])).push('\"', 0);\n state.tokenize = phpString('\"');\n return \"string\";\n },\n \"{\": function(_stream, state) {\n if (state.tokStack && state.tokStack.length)\n state.tokStack[state.tokStack.length - 1]++;\n return false;\n },\n \"}\": function(_stream, state) {\n if (state.tokStack && state.tokStack.length > 0 &&\n !--state.tokStack[state.tokStack.length - 1]) {\n state.tokenize = phpString(state.tokStack[state.tokStack.length - 2]);\n }\n return false;\n }\n }\n };\n\n CodeMirror.defineMode(\"php\", function(config, parserConfig) {\n var htmlMode = CodeMirror.getMode(config, (parserConfig && parserConfig.htmlMode) || \"text/html\");\n var phpMode = CodeMirror.getMode(config, phpConfig);\n\n function dispatch(stream, state) {\n var isPHP = state.curMode == phpMode;\n if (stream.sol() && state.pending && state.pending != '\"' && state.pending != \"'\") state.pending = null;\n if (!isPHP) {\n if (stream.match(/^<\\?\\w*/)) {\n state.curMode = phpMode;\n if (!state.php) state.php = CodeMirror.startState(phpMode, htmlMode.indent(state.html, \"\", \"\"))\n state.curState = state.php;\n return \"meta\";\n }\n if (state.pending == '\"' || state.pending == \"'\") {\n while (!stream.eol() && stream.next() != state.pending) {}\n var style = \"string\";\n } else if (state.pending && stream.pos < state.pending.end) {\n stream.pos = state.pending.end;\n var style = state.pending.style;\n } else {\n var style = htmlMode.token(stream, state.curState);\n }\n if (state.pending) state.pending = null;\n var cur = stream.current(), openPHP = cur.search(/<\\?/), m;\n if (openPHP != -1) {\n if (style == \"string\" && (m = cur.match(/[\\'\\\"]$/)) && !/\\?>/.test(cur)) state.pending = m[0];\n else state.pending = {end: stream.pos, style: style};\n stream.backUp(cur.length - openPHP);\n }\n return style;\n } else if (isPHP && state.php.tokenize == null && stream.match(\"?>\")) {\n state.curMode = htmlMode;\n state.curState = state.html;\n if (!state.php.context.prev) state.php = null;\n return \"meta\";\n } else {\n return phpMode.token(stream, state.curState);\n }\n }\n\n return {\n startState: function() {\n var html = CodeMirror.startState(htmlMode)\n var php = parserConfig.startOpen ? CodeMirror.startState(phpMode) : null\n return {html: html,\n php: php,\n curMode: parserConfig.startOpen ? phpMode : htmlMode,\n curState: parserConfig.startOpen ? php : html,\n pending: null};\n },\n\n copyState: function(state) {\n var html = state.html, htmlNew = CodeMirror.copyState(htmlMode, html),\n php = state.php, phpNew = php && CodeMirror.copyState(phpMode, php), cur;\n if (state.curMode == htmlMode) cur = htmlNew;\n else cur = phpNew;\n return {html: htmlNew, php: phpNew, curMode: state.curMode, curState: cur,\n pending: state.pending};\n },\n\n token: dispatch,\n\n indent: function(state, textAfter, line) {\n if ((state.curMode != phpMode && /^\\s*<\\//.test(textAfter)) ||\n (state.curMode == phpMode && /^\\?>/.test(textAfter)))\n return htmlMode.indent(state.html, textAfter, line);\n return state.curMode.indent(state.curState, textAfter, line);\n },\n\n blockCommentStart: \"/*\",\n blockCommentEnd: \"*/\",\n lineComment: \"//\",\n\n innerMode: function(state) { return {state: state.curState, mode: state.curMode}; }\n };\n }, \"htmlmixed\", \"clike\");\n\n CodeMirror.defineMIME(\"application/x-httpd-php\", \"php\");\n CodeMirror.defineMIME(\"application/x-httpd-php-open\", {name: \"php\", startOpen: true});\n CodeMirror.defineMIME(\"text/x-php\", phpConfig);\n});\n", "// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/5/LICENSE\n\n(function(mod) {\n if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n mod(require(\"../../lib/codemirror\"));\n else if (typeof define == \"function\" && define.amd) // AMD\n define([\"../../lib/codemirror\"], mod);\n else // Plain browser env\n mod(CodeMirror);\n})(function(CodeMirror) {\n\"use strict\";\n\nfunction wordObj(words) {\n var o = {};\n for (var i = 0, e = words.length; i < e; ++i) o[words[i]] = true;\n return o;\n}\n\nvar keywordList = [\n \"alias\", \"and\", \"BEGIN\", \"begin\", \"break\", \"case\", \"class\", \"def\", \"defined?\", \"do\", \"else\",\n \"elsif\", \"END\", \"end\", \"ensure\", \"false\", \"for\", \"if\", \"in\", \"module\", \"next\", \"not\", \"or\",\n \"redo\", \"rescue\", \"retry\", \"return\", \"self\", \"super\", \"then\", \"true\", \"undef\", \"unless\",\n \"until\", \"when\", \"while\", \"yield\", \"nil\", \"raise\", \"throw\", \"catch\", \"fail\", \"loop\", \"callcc\",\n \"caller\", \"lambda\", \"proc\", \"public\", \"protected\", \"private\", \"require\", \"load\",\n \"require_relative\", \"extend\", \"autoload\", \"__END__\", \"__FILE__\", \"__LINE__\", \"__dir__\"\n], keywords = wordObj(keywordList);\n\nvar indentWords = wordObj([\"def\", \"class\", \"case\", \"for\", \"while\", \"until\", \"module\",\n \"catch\", \"loop\", \"proc\", \"begin\"]);\nvar dedentWords = wordObj([\"end\", \"until\"]);\nvar opening = {\"[\": \"]\", \"{\": \"}\", \"(\": \")\"};\nvar closing = {\"]\": \"[\", \"}\": \"{\", \")\": \"(\"};\n\nCodeMirror.defineMode(\"ruby\", function(config) {\n var curPunc;\n\n function chain(newtok, stream, state) {\n state.tokenize.push(newtok);\n return newtok(stream, state);\n }\n\n function tokenBase(stream, state) {\n if (stream.sol() && stream.match(\"=begin\") && stream.eol()) {\n state.tokenize.push(readBlockComment);\n return \"comment\";\n }\n if (stream.eatSpace()) return null;\n var ch = stream.next(), m;\n if (ch == \"`\" || ch == \"'\" || ch == '\"') {\n return chain(readQuoted(ch, \"string\", ch == '\"' || ch == \"`\"), stream, state);\n } else if (ch == \"/\") {\n if (regexpAhead(stream))\n return chain(readQuoted(ch, \"string-2\", true), stream, state);\n else\n return \"operator\";\n } else if (ch == \"%\") {\n var style = \"string\", embed = true;\n if (stream.eat(\"s\")) style = \"atom\";\n else if (stream.eat(/[WQ]/)) style = \"string\";\n else if (stream.eat(/[r]/)) style = \"string-2\";\n else if (stream.eat(/[wxq]/)) { style = \"string\"; embed = false; }\n var delim = stream.eat(/[^\\w\\s=]/);\n if (!delim) return \"operator\";\n if (opening.propertyIsEnumerable(delim)) delim = opening[delim];\n return chain(readQuoted(delim, style, embed, true), stream, state);\n } else if (ch == \"#\") {\n stream.skipToEnd();\n return \"comment\";\n } else if (ch == \"<\" && (m = stream.match(/^<([-~])[\\`\\\"\\']?([a-zA-Z_?]\\w*)[\\`\\\"\\']?(?:;|$)/))) {\n return chain(readHereDoc(m[2], m[1]), stream, state);\n } else if (ch == \"0\") {\n if (stream.eat(\"x\")) stream.eatWhile(/[\\da-fA-F]/);\n else if (stream.eat(\"b\")) stream.eatWhile(/[01]/);\n else stream.eatWhile(/[0-7]/);\n return \"number\";\n } else if (/\\d/.test(ch)) {\n stream.match(/^[\\d_]*(?:\\.[\\d_]+)?(?:[eE][+\\-]?[\\d_]+)?/);\n return \"number\";\n } else if (ch == \"?\") {\n while (stream.match(/^\\\\[CM]-/)) {}\n if (stream.eat(\"\\\\\")) stream.eatWhile(/\\w/);\n else stream.next();\n return \"string\";\n } else if (ch == \":\") {\n if (stream.eat(\"'\")) return chain(readQuoted(\"'\", \"atom\", false), stream, state);\n if (stream.eat('\"')) return chain(readQuoted('\"', \"atom\", true), stream, state);\n\n // :> :>> :< :<< are valid symbols\n if (stream.eat(/[\\<\\>]/)) {\n stream.eat(/[\\<\\>]/);\n return \"atom\";\n }\n\n // :+ :- :/ :* :| :& :! are valid symbols\n if (stream.eat(/[\\+\\-\\*\\/\\&\\|\\:\\!]/)) {\n return \"atom\";\n }\n\n // Symbols can't start by a digit\n if (stream.eat(/[a-zA-Z$@_\\xa1-\\uffff]/)) {\n stream.eatWhile(/[\\w$\\xa1-\\uffff]/);\n // Only one ? ! = is allowed and only as the last character\n stream.eat(/[\\?\\!\\=]/);\n return \"atom\";\n }\n return \"operator\";\n } else if (ch == \"@\" && stream.match(/^@?[a-zA-Z_\\xa1-\\uffff]/)) {\n stream.eat(\"@\");\n stream.eatWhile(/[\\w\\xa1-\\uffff]/);\n return \"variable-2\";\n } else if (ch == \"$\") {\n if (stream.eat(/[a-zA-Z_]/)) {\n stream.eatWhile(/[\\w]/);\n } else if (stream.eat(/\\d/)) {\n stream.eat(/\\d/);\n } else {\n stream.next(); // Must be a special global like $: or $!\n }\n return \"variable-3\";\n } else if (/[a-zA-Z_\\xa1-\\uffff]/.test(ch)) {\n stream.eatWhile(/[\\w\\xa1-\\uffff]/);\n stream.eat(/[\\?\\!]/);\n if (stream.eat(\":\")) return \"atom\";\n return \"ident\";\n } else if (ch == \"|\" && (state.varList || state.lastTok == \"{\" || state.lastTok == \"do\")) {\n curPunc = \"|\";\n return null;\n } else if (/[\\(\\)\\[\\]{}\\\\;]/.test(ch)) {\n curPunc = ch;\n return null;\n } else if (ch == \"-\" && stream.eat(\">\")) {\n return \"arrow\";\n } else if (/[=+\\-\\/*:\\.^%<>~|]/.test(ch)) {\n var more = stream.eatWhile(/[=+\\-\\/*:\\.^%<>~|]/);\n if (ch == \".\" && !more) curPunc = \".\";\n return \"operator\";\n } else {\n return null;\n }\n }\n\n function regexpAhead(stream) {\n var start = stream.pos, depth = 0, next, found = false, escaped = false\n while ((next = stream.next()) != null) {\n if (!escaped) {\n if (\"[{(\".indexOf(next) > -1) {\n depth++\n } else if (\"]})\".indexOf(next) > -1) {\n depth--\n if (depth < 0) break\n } else if (next == \"/\" && depth == 0) {\n found = true\n break\n }\n escaped = next == \"\\\\\"\n } else {\n escaped = false\n }\n }\n stream.backUp(stream.pos - start)\n return found\n }\n\n function tokenBaseUntilBrace(depth) {\n if (!depth) depth = 1;\n return function(stream, state) {\n if (stream.peek() == \"}\") {\n if (depth == 1) {\n state.tokenize.pop();\n return state.tokenize[state.tokenize.length-1](stream, state);\n } else {\n state.tokenize[state.tokenize.length - 1] = tokenBaseUntilBrace(depth - 1);\n }\n } else if (stream.peek() == \"{\") {\n state.tokenize[state.tokenize.length - 1] = tokenBaseUntilBrace(depth + 1);\n }\n return tokenBase(stream, state);\n };\n }\n function tokenBaseOnce() {\n var alreadyCalled = false;\n return function(stream, state) {\n if (alreadyCalled) {\n state.tokenize.pop();\n return state.tokenize[state.tokenize.length-1](stream, state);\n }\n alreadyCalled = true;\n return tokenBase(stream, state);\n };\n }\n function readQuoted(quote, style, embed, unescaped) {\n return function(stream, state) {\n var escaped = false, ch;\n\n if (state.context.type === 'read-quoted-paused') {\n state.context = state.context.prev;\n stream.eat(\"}\");\n }\n\n while ((ch = stream.next()) != null) {\n if (ch == quote && (unescaped || !escaped)) {\n state.tokenize.pop();\n break;\n }\n if (embed && ch == \"#\" && !escaped) {\n if (stream.eat(\"{\")) {\n if (quote == \"}\") {\n state.context = {prev: state.context, type: 'read-quoted-paused'};\n }\n state.tokenize.push(tokenBaseUntilBrace());\n break;\n } else if (/[@\\$]/.test(stream.peek())) {\n state.tokenize.push(tokenBaseOnce());\n break;\n }\n }\n escaped = !escaped && ch == \"\\\\\";\n }\n return style;\n };\n }\n function readHereDoc(phrase, mayIndent) {\n return function(stream, state) {\n if (mayIndent) stream.eatSpace()\n if (stream.match(phrase)) state.tokenize.pop();\n else stream.skipToEnd();\n return \"string\";\n };\n }\n function readBlockComment(stream, state) {\n if (stream.sol() && stream.match(\"=end\") && stream.eol())\n state.tokenize.pop();\n stream.skipToEnd();\n return \"comment\";\n }\n\n return {\n startState: function() {\n return {tokenize: [tokenBase],\n indented: 0,\n context: {type: \"top\", indented: -config.indentUnit},\n continuedLine: false,\n lastTok: null,\n varList: false};\n },\n\n token: function(stream, state) {\n curPunc = null;\n if (stream.sol()) state.indented = stream.indentation();\n var style = state.tokenize[state.tokenize.length-1](stream, state), kwtype;\n var thisTok = curPunc;\n if (style == \"ident\") {\n var word = stream.current();\n style = state.lastTok == \".\" ? \"property\"\n : keywords.propertyIsEnumerable(stream.current()) ? \"keyword\"\n : /^[A-Z]/.test(word) ? \"tag\"\n : (state.lastTok == \"def\" || state.lastTok == \"class\" || state.varList) ? \"def\"\n : \"variable\";\n if (style == \"keyword\") {\n thisTok = word;\n if (indentWords.propertyIsEnumerable(word)) kwtype = \"indent\";\n else if (dedentWords.propertyIsEnumerable(word)) kwtype = \"dedent\";\n else if ((word == \"if\" || word == \"unless\") && stream.column() == stream.indentation())\n kwtype = \"indent\";\n else if (word == \"do\" && state.context.indented < state.indented)\n kwtype = \"indent\";\n }\n }\n if (curPunc || (style && style != \"comment\")) state.lastTok = thisTok;\n if (curPunc == \"|\") state.varList = !state.varList;\n\n if (kwtype == \"indent\" || /[\\(\\[\\{]/.test(curPunc))\n state.context = {prev: state.context, type: curPunc || style, indented: state.indented};\n else if ((kwtype == \"dedent\" || /[\\)\\]\\}]/.test(curPunc)) && state.context.prev)\n state.context = state.context.prev;\n\n if (stream.eol())\n state.continuedLine = (curPunc == \"\\\\\" || style == \"operator\");\n return style;\n },\n\n indent: function(state, textAfter) {\n if (state.tokenize[state.tokenize.length-1] != tokenBase) return CodeMirror.Pass;\n var firstChar = textAfter && textAfter.charAt(0);\n var ct = state.context;\n var closed = ct.type == closing[firstChar] ||\n ct.type == \"keyword\" && /^(?:end|until|else|elsif|when|rescue)\\b/.test(textAfter);\n return ct.indented + (closed ? 0 : config.indentUnit) +\n (state.continuedLine ? config.indentUnit : 0);\n },\n\n electricInput: /^\\s*(?:end|rescue|elsif|else|\\})$/,\n lineComment: \"#\",\n fold: \"indent\"\n };\n});\n\nCodeMirror.defineMIME(\"text/x-ruby\", \"ruby\");\n\nCodeMirror.registerHelper(\"hintWords\", \"ruby\", keywordList);\n\n});\n", "// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/5/LICENSE\n\n(function(mod) {\n if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n mod(require(\"../../lib/codemirror\"), require(\"../css/css\"));\n else if (typeof define == \"function\" && define.amd) // AMD\n define([\"../../lib/codemirror\", \"../css/css\"], mod);\n else // Plain browser env\n mod(CodeMirror);\n})(function(CodeMirror) {\n\"use strict\";\n\nCodeMirror.defineMode(\"sass\", function(config) {\n var cssMode = CodeMirror.mimeModes[\"text/css\"];\n var propertyKeywords = cssMode.propertyKeywords || {},\n colorKeywords = cssMode.colorKeywords || {},\n valueKeywords = cssMode.valueKeywords || {},\n fontProperties = cssMode.fontProperties || {};\n\n function tokenRegexp(words) {\n return new RegExp(\"^\" + words.join(\"|\"));\n }\n\n var keywords = [\"true\", \"false\", \"null\", \"auto\"];\n var keywordsRegexp = new RegExp(\"^\" + keywords.join(\"|\"));\n\n var operators = [\"\\\\(\", \"\\\\)\", \"=\", \">\", \"<\", \"==\", \">=\", \"<=\", \"\\\\+\", \"-\",\n \"\\\\!=\", \"/\", \"\\\\*\", \"%\", \"and\", \"or\", \"not\", \";\",\"\\\\{\",\"\\\\}\",\":\"];\n var opRegexp = tokenRegexp(operators);\n\n var pseudoElementsRegexp = /^::?[a-zA-Z_][\\w\\-]*/;\n\n var word;\n\n function isEndLine(stream) {\n return !stream.peek() || stream.match(/\\s+$/, false);\n }\n\n function urlTokens(stream, state) {\n var ch = stream.peek();\n\n if (ch === \")\") {\n stream.next();\n state.tokenizer = tokenBase;\n return \"operator\";\n } else if (ch === \"(\") {\n stream.next();\n stream.eatSpace();\n\n return \"operator\";\n } else if (ch === \"'\" || ch === '\"') {\n state.tokenizer = buildStringTokenizer(stream.next());\n return \"string\";\n } else {\n state.tokenizer = buildStringTokenizer(\")\", false);\n return \"string\";\n }\n }\n function comment(indentation, multiLine) {\n return function(stream, state) {\n if (stream.sol() && stream.indentation() <= indentation) {\n state.tokenizer = tokenBase;\n return tokenBase(stream, state);\n }\n\n if (multiLine && stream.skipTo(\"*/\")) {\n stream.next();\n stream.next();\n state.tokenizer = tokenBase;\n } else {\n stream.skipToEnd();\n }\n\n return \"comment\";\n };\n }\n\n function buildStringTokenizer(quote, greedy) {\n if (greedy == null) { greedy = true; }\n\n function stringTokenizer(stream, state) {\n var nextChar = stream.next();\n var peekChar = stream.peek();\n var previousChar = stream.string.charAt(stream.pos-2);\n\n var endingString = ((nextChar !== \"\\\\\" && peekChar === quote) || (nextChar === quote && previousChar !== \"\\\\\"));\n\n if (endingString) {\n if (nextChar !== quote && greedy) { stream.next(); }\n if (isEndLine(stream)) {\n state.cursorHalf = 0;\n }\n state.tokenizer = tokenBase;\n return \"string\";\n } else if (nextChar === \"#\" && peekChar === \"{\") {\n state.tokenizer = buildInterpolationTokenizer(stringTokenizer);\n stream.next();\n return \"operator\";\n } else {\n return \"string\";\n }\n }\n\n return stringTokenizer;\n }\n\n function buildInterpolationTokenizer(currentTokenizer) {\n return function(stream, state) {\n if (stream.peek() === \"}\") {\n stream.next();\n state.tokenizer = currentTokenizer;\n return \"operator\";\n } else {\n return tokenBase(stream, state);\n }\n };\n }\n\n function indent(state) {\n if (state.indentCount == 0) {\n state.indentCount++;\n var lastScopeOffset = state.scopes[0].offset;\n var currentOffset = lastScopeOffset + config.indentUnit;\n state.scopes.unshift({ offset:currentOffset });\n }\n }\n\n function dedent(state) {\n if (state.scopes.length == 1) return;\n\n state.scopes.shift();\n }\n\n function tokenBase(stream, state) {\n var ch = stream.peek();\n\n // Comment\n if (stream.match(\"/*\")) {\n state.tokenizer = comment(stream.indentation(), true);\n return state.tokenizer(stream, state);\n }\n if (stream.match(\"//\")) {\n state.tokenizer = comment(stream.indentation(), false);\n return state.tokenizer(stream, state);\n }\n\n // Interpolation\n if (stream.match(\"#{\")) {\n state.tokenizer = buildInterpolationTokenizer(tokenBase);\n return \"operator\";\n }\n\n // Strings\n if (ch === '\"' || ch === \"'\") {\n stream.next();\n state.tokenizer = buildStringTokenizer(ch);\n return \"string\";\n }\n\n if(!state.cursorHalf){// state.cursorHalf === 0\n // first half i.e. before : for key-value pairs\n // including selectors\n\n if (ch === \"-\") {\n if (stream.match(/^-\\w+-/)) {\n return \"meta\";\n }\n }\n\n if (ch === \".\") {\n stream.next();\n if (stream.match(/^[\\w-]+/)) {\n indent(state);\n return \"qualifier\";\n } else if (stream.peek() === \"#\") {\n indent(state);\n return \"tag\";\n }\n }\n\n if (ch === \"#\") {\n stream.next();\n // ID selectors\n if (stream.match(/^[\\w-]+/)) {\n indent(state);\n return \"builtin\";\n }\n if (stream.peek() === \"#\") {\n indent(state);\n return \"tag\";\n }\n }\n\n // Variables\n if (ch === \"$\") {\n stream.next();\n stream.eatWhile(/[\\w-]/);\n return \"variable-2\";\n }\n\n // Numbers\n if (stream.match(/^-?[0-9\\.]+/))\n return \"number\";\n\n // Units\n if (stream.match(/^(px|em|in)\\b/))\n return \"unit\";\n\n if (stream.match(keywordsRegexp))\n return \"keyword\";\n\n if (stream.match(/^url/) && stream.peek() === \"(\") {\n state.tokenizer = urlTokens;\n return \"atom\";\n }\n\n if (ch === \"=\") {\n // Match shortcut mixin definition\n if (stream.match(/^=[\\w-]+/)) {\n indent(state);\n return \"meta\";\n }\n }\n\n if (ch === \"+\") {\n // Match shortcut mixin definition\n if (stream.match(/^\\+[\\w-]+/)){\n return \"variable-3\";\n }\n }\n\n if(ch === \"@\"){\n if(stream.match('@extend')){\n if(!stream.match(/\\s*[\\w]/))\n dedent(state);\n }\n }\n\n\n // Indent Directives\n if (stream.match(/^@(else if|if|media|else|for|each|while|mixin|function)/)) {\n indent(state);\n return \"def\";\n }\n\n // Other Directives\n if (ch === \"@\") {\n stream.next();\n stream.eatWhile(/[\\w-]/);\n return \"def\";\n }\n\n if (stream.eatWhile(/[\\w-]/)){\n if(stream.match(/ *: *[\\w-\\+\\$#!\\(\"']/,false)){\n word = stream.current().toLowerCase();\n var prop = state.prevProp + \"-\" + word;\n if (propertyKeywords.hasOwnProperty(prop)) {\n return \"property\";\n } else if (propertyKeywords.hasOwnProperty(word)) {\n state.prevProp = word;\n return \"property\";\n } else if (fontProperties.hasOwnProperty(word)) {\n return \"property\";\n }\n return \"tag\";\n }\n else if(stream.match(/ *:/,false)){\n indent(state);\n state.cursorHalf = 1;\n state.prevProp = stream.current().toLowerCase();\n return \"property\";\n }\n else if(stream.match(/ *,/,false)){\n return \"tag\";\n }\n else{\n indent(state);\n return \"tag\";\n }\n }\n\n if(ch === \":\"){\n if (stream.match(pseudoElementsRegexp)){ // could be a pseudo-element\n return \"variable-3\";\n }\n stream.next();\n state.cursorHalf=1;\n return \"operator\";\n }\n\n } // cursorHalf===0 ends here\n else{\n\n if (ch === \"#\") {\n stream.next();\n // Hex numbers\n if (stream.match(/[0-9a-fA-F]{6}|[0-9a-fA-F]{3}/)){\n if (isEndLine(stream)) {\n state.cursorHalf = 0;\n }\n return \"number\";\n }\n }\n\n // Numbers\n if (stream.match(/^-?[0-9\\.]+/)){\n if (isEndLine(stream)) {\n state.cursorHalf = 0;\n }\n return \"number\";\n }\n\n // Units\n if (stream.match(/^(px|em|in)\\b/)){\n if (isEndLine(stream)) {\n state.cursorHalf = 0;\n }\n return \"unit\";\n }\n\n if (stream.match(keywordsRegexp)){\n if (isEndLine(stream)) {\n state.cursorHalf = 0;\n }\n return \"keyword\";\n }\n\n if (stream.match(/^url/) && stream.peek() === \"(\") {\n state.tokenizer = urlTokens;\n if (isEndLine(stream)) {\n state.cursorHalf = 0;\n }\n return \"atom\";\n }\n\n // Variables\n if (ch === \"$\") {\n stream.next();\n stream.eatWhile(/[\\w-]/);\n if (isEndLine(stream)) {\n state.cursorHalf = 0;\n }\n return \"variable-2\";\n }\n\n // bang character for !important, !default, etc.\n if (ch === \"!\") {\n stream.next();\n state.cursorHalf = 0;\n return stream.match(/^[\\w]+/) ? \"keyword\": \"operator\";\n }\n\n if (stream.match(opRegexp)){\n if (isEndLine(stream)) {\n state.cursorHalf = 0;\n }\n return \"operator\";\n }\n\n // attributes\n if (stream.eatWhile(/[\\w-]/)) {\n if (isEndLine(stream)) {\n state.cursorHalf = 0;\n }\n word = stream.current().toLowerCase();\n if (valueKeywords.hasOwnProperty(word)) {\n return \"atom\";\n } else if (colorKeywords.hasOwnProperty(word)) {\n return \"keyword\";\n } else if (propertyKeywords.hasOwnProperty(word)) {\n state.prevProp = stream.current().toLowerCase();\n return \"property\";\n } else {\n return \"tag\";\n }\n }\n\n //stream.eatSpace();\n if (isEndLine(stream)) {\n state.cursorHalf = 0;\n return null;\n }\n\n } // else ends here\n\n if (stream.match(opRegexp))\n return \"operator\";\n\n // If we haven't returned by now, we move 1 character\n // and return an error\n stream.next();\n return null;\n }\n\n function tokenLexer(stream, state) {\n if (stream.sol()) state.indentCount = 0;\n var style = state.tokenizer(stream, state);\n var current = stream.current();\n\n if (current === \"@return\" || current === \"}\"){\n dedent(state);\n }\n\n if (style !== null) {\n var startOfToken = stream.pos - current.length;\n\n var withCurrentIndent = startOfToken + (config.indentUnit * state.indentCount);\n\n var newScopes = [];\n\n for (var i = 0; i < state.scopes.length; i++) {\n var scope = state.scopes[i];\n\n if (scope.offset <= withCurrentIndent)\n newScopes.push(scope);\n }\n\n state.scopes = newScopes;\n }\n\n\n return style;\n }\n\n return {\n startState: function() {\n return {\n tokenizer: tokenBase,\n scopes: [{offset: 0, type: \"sass\"}],\n indentCount: 0,\n cursorHalf: 0, // cursor half tells us if cursor lies after (1)\n // or before (0) colon (well... more or less)\n definedVars: [],\n definedMixins: []\n };\n },\n token: function(stream, state) {\n var style = tokenLexer(stream, state);\n\n state.lastToken = { style: style, content: stream.current() };\n\n return style;\n },\n\n indent: function(state) {\n return state.scopes[0].offset;\n },\n\n blockCommentStart: \"/*\",\n blockCommentEnd: \"*/\",\n lineComment: \"//\",\n fold: \"indent\"\n };\n}, \"css\");\n\nCodeMirror.defineMIME(\"text/x-sass\", \"sass\");\n\n});\n", "// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/5/LICENSE\n\n(function(mod) {\n if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n mod(require(\"../../lib/codemirror\"));\n else if (typeof define == \"function\" && define.amd) // AMD\n define([\"../../lib/codemirror\"], mod);\n else // Plain browser env\n mod(CodeMirror);\n})(function(CodeMirror) {\n\"use strict\";\n\nCodeMirror.defineMode('shell', function() {\n\n var words = {};\n function define(style, dict) {\n for(var i = 0; i < dict.length; i++) {\n words[dict[i]] = style;\n }\n };\n\n var commonAtoms = [\"true\", \"false\"];\n var commonKeywords = [\"if\", \"then\", \"do\", \"else\", \"elif\", \"while\", \"until\", \"for\", \"in\", \"esac\", \"fi\",\n \"fin\", \"fil\", \"done\", \"exit\", \"set\", \"unset\", \"export\", \"function\"];\n var commonCommands = [\"ab\", \"awk\", \"bash\", \"beep\", \"cat\", \"cc\", \"cd\", \"chown\", \"chmod\", \"chroot\", \"clear\",\n \"cp\", \"curl\", \"cut\", \"diff\", \"echo\", \"find\", \"gawk\", \"gcc\", \"get\", \"git\", \"grep\", \"hg\", \"kill\", \"killall\",\n \"ln\", \"ls\", \"make\", \"mkdir\", \"openssl\", \"mv\", \"nc\", \"nl\", \"node\", \"npm\", \"ping\", \"ps\", \"restart\", \"rm\",\n \"rmdir\", \"sed\", \"service\", \"sh\", \"shopt\", \"shred\", \"source\", \"sort\", \"sleep\", \"ssh\", \"start\", \"stop\",\n \"su\", \"sudo\", \"svn\", \"tee\", \"telnet\", \"top\", \"touch\", \"vi\", \"vim\", \"wall\", \"wc\", \"wget\", \"who\", \"write\",\n \"yes\", \"zsh\"];\n\n CodeMirror.registerHelper(\"hintWords\", \"shell\", commonAtoms.concat(commonKeywords, commonCommands));\n\n define('atom', commonAtoms);\n define('keyword', commonKeywords);\n define('builtin', commonCommands);\n\n function tokenBase(stream, state) {\n if (stream.eatSpace()) return null;\n\n var sol = stream.sol();\n var ch = stream.next();\n\n if (ch === '\\\\') {\n stream.next();\n return null;\n }\n if (ch === '\\'' || ch === '\"' || ch === '`') {\n state.tokens.unshift(tokenString(ch, ch === \"`\" ? \"quote\" : \"string\"));\n return tokenize(stream, state);\n }\n if (ch === '#') {\n if (sol && stream.eat('!')) {\n stream.skipToEnd();\n return 'meta'; // 'comment'?\n }\n stream.skipToEnd();\n return 'comment';\n }\n if (ch === '$') {\n state.tokens.unshift(tokenDollar);\n return tokenize(stream, state);\n }\n if (ch === '+' || ch === '=') {\n return 'operator';\n }\n if (ch === '-') {\n stream.eat('-');\n stream.eatWhile(/\\w/);\n return 'attribute';\n }\n if (ch == \"<\") {\n if (stream.match(\"<<\")) return \"operator\"\n var heredoc = stream.match(/^<-?\\s*['\"]?([^'\"]*)['\"]?/)\n if (heredoc) {\n state.tokens.unshift(tokenHeredoc(heredoc[1]))\n return 'string-2'\n }\n }\n if (/\\d/.test(ch)) {\n stream.eatWhile(/\\d/);\n if(stream.eol() || !/\\w/.test(stream.peek())) {\n return 'number';\n }\n }\n stream.eatWhile(/[\\w-]/);\n var cur = stream.current();\n if (stream.peek() === '=' && /\\w+/.test(cur)) return 'def';\n return words.hasOwnProperty(cur) ? words[cur] : null;\n }\n\n function tokenString(quote, style) {\n var close = quote == \"(\" ? \")\" : quote == \"{\" ? \"}\" : quote\n return function(stream, state) {\n var next, escaped = false;\n while ((next = stream.next()) != null) {\n if (next === close && !escaped) {\n state.tokens.shift();\n break;\n } else if (next === '$' && !escaped && quote !== \"'\" && stream.peek() != close) {\n escaped = true;\n stream.backUp(1);\n state.tokens.unshift(tokenDollar);\n break;\n } else if (!escaped && quote !== close && next === quote) {\n state.tokens.unshift(tokenString(quote, style))\n return tokenize(stream, state)\n } else if (!escaped && /['\"]/.test(next) && !/['\"]/.test(quote)) {\n state.tokens.unshift(tokenStringStart(next, \"string\"));\n stream.backUp(1);\n break;\n }\n escaped = !escaped && next === '\\\\';\n }\n return style;\n };\n };\n\n function tokenStringStart(quote, style) {\n return function(stream, state) {\n state.tokens[0] = tokenString(quote, style)\n stream.next()\n return tokenize(stream, state)\n }\n }\n\n var tokenDollar = function(stream, state) {\n if (state.tokens.length > 1) stream.eat('$');\n var ch = stream.next()\n if (/['\"({]/.test(ch)) {\n state.tokens[0] = tokenString(ch, ch == \"(\" ? \"quote\" : ch == \"{\" ? \"def\" : \"string\");\n return tokenize(stream, state);\n }\n if (!/\\d/.test(ch)) stream.eatWhile(/\\w/);\n state.tokens.shift();\n return 'def';\n };\n\n function tokenHeredoc(delim) {\n return function(stream, state) {\n if (stream.sol() && stream.string == delim) state.tokens.shift()\n stream.skipToEnd()\n return \"string-2\"\n }\n }\n\n function tokenize(stream, state) {\n return (state.tokens[0] || tokenBase) (stream, state);\n };\n\n return {\n startState: function() {return {tokens:[]};},\n token: function(stream, state) {\n return tokenize(stream, state);\n },\n closeBrackets: \"()[]{}''\\\"\\\"``\",\n lineComment: '#',\n fold: \"brace\"\n };\n});\n\nCodeMirror.defineMIME('text/x-sh', 'shell');\n// Apache uses a slightly different Media Type for Shell scripts\n// http://svn.apache.org/repos/asf/httpd/httpd/trunk/docs/conf/mime.types\nCodeMirror.defineMIME('application/x-sh', 'shell');\n\n});\n", "// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/5/LICENSE\n\n(function(mod) {\n if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n mod(require(\"../../lib/codemirror\"));\n else if (typeof define == \"function\" && define.amd) // AMD\n define([\"../../lib/codemirror\"], mod);\n else // Plain browser env\n mod(CodeMirror);\n})(function(CodeMirror) {\n\"use strict\";\n\nCodeMirror.defineMode(\"sql\", function(config, parserConfig) {\n var client = parserConfig.client || {},\n atoms = parserConfig.atoms || {\"false\": true, \"true\": true, \"null\": true},\n builtin = parserConfig.builtin || set(defaultBuiltin),\n keywords = parserConfig.keywords || set(sqlKeywords),\n operatorChars = parserConfig.operatorChars || /^[*+\\-%<>!=&|~^\\/]/,\n support = parserConfig.support || {},\n hooks = parserConfig.hooks || {},\n dateSQL = parserConfig.dateSQL || {\"date\" : true, \"time\" : true, \"timestamp\" : true},\n backslashStringEscapes = parserConfig.backslashStringEscapes !== false,\n brackets = parserConfig.brackets || /^[\\{}\\(\\)\\[\\]]/,\n punctuation = parserConfig.punctuation || /^[;.,:]/\n\n function tokenBase(stream, state) {\n var ch = stream.next();\n\n // call hooks from the mime type\n if (hooks[ch]) {\n var result = hooks[ch](stream, state);\n if (result !== false) return result;\n }\n\n if (support.hexNumber &&\n ((ch == \"0\" && stream.match(/^[xX][0-9a-fA-F]+/))\n || (ch == \"x\" || ch == \"X\") && stream.match(/^'[0-9a-fA-F]*'/))) {\n // hex\n // ref: https://dev.mysql.com/doc/refman/8.0/en/hexadecimal-literals.html\n return \"number\";\n } else if (support.binaryNumber &&\n (((ch == \"b\" || ch == \"B\") && stream.match(/^'[01]*'/))\n || (ch == \"0\" && stream.match(/^b[01]+/)))) {\n // bitstring\n // ref: https://dev.mysql.com/doc/refman/8.0/en/bit-value-literals.html\n return \"number\";\n } else if (ch.charCodeAt(0) > 47 && ch.charCodeAt(0) < 58) {\n // numbers\n // ref: https://dev.mysql.com/doc/refman/8.0/en/number-literals.html\n stream.match(/^[0-9]*(\\.[0-9]+)?([eE][-+]?[0-9]+)?/);\n support.decimallessFloat && stream.match(/^\\.(?!\\.)/);\n return \"number\";\n } else if (ch == \"?\" && (stream.eatSpace() || stream.eol() || stream.eat(\";\"))) {\n // placeholders\n return \"variable-3\";\n } else if (ch == \"'\" || (ch == '\"' && support.doubleQuote)) {\n // strings\n // ref: https://dev.mysql.com/doc/refman/8.0/en/string-literals.html\n state.tokenize = tokenLiteral(ch);\n return state.tokenize(stream, state);\n } else if ((((support.nCharCast && (ch == \"n\" || ch == \"N\"))\n || (support.charsetCast && ch == \"_\" && stream.match(/[a-z][a-z0-9]*/i)))\n && (stream.peek() == \"'\" || stream.peek() == '\"'))) {\n // charset casting: _utf8'str', N'str', n'str'\n // ref: https://dev.mysql.com/doc/refman/8.0/en/string-literals.html\n return \"keyword\";\n } else if (support.escapeConstant && (ch == \"e\" || ch == \"E\")\n && (stream.peek() == \"'\" || (stream.peek() == '\"' && support.doubleQuote))) {\n // escape constant: E'str', e'str'\n // ref: https://www.postgresql.org/docs/current/sql-syntax-lexical.html#SQL-SYNTAX-STRINGS-ESCAPE\n state.tokenize = function(stream, state) {\n return (state.tokenize = tokenLiteral(stream.next(), true))(stream, state);\n }\n return \"keyword\";\n } else if (support.commentSlashSlash && ch == \"/\" && stream.eat(\"/\")) {\n // 1-line comment\n stream.skipToEnd();\n return \"comment\";\n } else if ((support.commentHash && ch == \"#\")\n || (ch == \"-\" && stream.eat(\"-\") && (!support.commentSpaceRequired || stream.eat(\" \")))) {\n // 1-line comments\n // ref: https://kb.askmonty.org/en/comment-syntax/\n stream.skipToEnd();\n return \"comment\";\n } else if (ch == \"/\" && stream.eat(\"*\")) {\n // multi-line comments\n // ref: https://kb.askmonty.org/en/comment-syntax/\n state.tokenize = tokenComment(1);\n return state.tokenize(stream, state);\n } else if (ch == \".\") {\n // .1 for 0.1\n if (support.zerolessFloat && stream.match(/^(?:\\d+(?:e[+-]?\\d+)?)/i))\n return \"number\";\n if (stream.match(/^\\.+/))\n return null\n if (stream.match(/^[\\w\\d_$#]+/))\n return \"variable-2\";\n } else if (operatorChars.test(ch)) {\n // operators\n stream.eatWhile(operatorChars);\n return \"operator\";\n } else if (brackets.test(ch)) {\n // brackets\n return \"bracket\";\n } else if (punctuation.test(ch)) {\n // punctuation\n stream.eatWhile(punctuation);\n return \"punctuation\";\n } else if (ch == '{' &&\n (stream.match(/^( )*(d|D|t|T|ts|TS)( )*'[^']*'( )*}/) || stream.match(/^( )*(d|D|t|T|ts|TS)( )*\"[^\"]*\"( )*}/))) {\n // dates (weird ODBC syntax)\n // ref: https://dev.mysql.com/doc/refman/8.0/en/date-and-time-literals.html\n return \"number\";\n } else {\n stream.eatWhile(/^[_\\w\\d]/);\n var word = stream.current().toLowerCase();\n // dates (standard SQL syntax)\n // ref: https://dev.mysql.com/doc/refman/8.0/en/date-and-time-literals.html\n if (dateSQL.hasOwnProperty(word) && (stream.match(/^( )+'[^']*'/) || stream.match(/^( )+\"[^\"]*\"/)))\n return \"number\";\n if (atoms.hasOwnProperty(word)) return \"atom\";\n if (builtin.hasOwnProperty(word)) return \"type\";\n if (keywords.hasOwnProperty(word)) return \"keyword\";\n if (client.hasOwnProperty(word)) return \"builtin\";\n return null;\n }\n }\n\n // 'string', with char specified in quote escaped by '\\'\n function tokenLiteral(quote, backslashEscapes) {\n return function(stream, state) {\n var escaped = false, ch;\n while ((ch = stream.next()) != null) {\n if (ch == quote && !escaped) {\n state.tokenize = tokenBase;\n break;\n }\n escaped = (backslashStringEscapes || backslashEscapes) && !escaped && ch == \"\\\\\";\n }\n return \"string\";\n };\n }\n function tokenComment(depth) {\n return function(stream, state) {\n var m = stream.match(/^.*?(\\/\\*|\\*\\/)/)\n if (!m) stream.skipToEnd()\n else if (m[1] == \"/*\") state.tokenize = tokenComment(depth + 1)\n else if (depth > 1) state.tokenize = tokenComment(depth - 1)\n else state.tokenize = tokenBase\n return \"comment\"\n }\n }\n\n function pushContext(stream, state, type) {\n state.context = {\n prev: state.context,\n indent: stream.indentation(),\n col: stream.column(),\n type: type\n };\n }\n\n function popContext(state) {\n state.indent = state.context.indent;\n state.context = state.context.prev;\n }\n\n return {\n startState: function() {\n return {tokenize: tokenBase, context: null};\n },\n\n token: function(stream, state) {\n if (stream.sol()) {\n if (state.context && state.context.align == null)\n state.context.align = false;\n }\n if (state.tokenize == tokenBase && stream.eatSpace()) return null;\n\n var style = state.tokenize(stream, state);\n if (style == \"comment\") return style;\n\n if (state.context && state.context.align == null)\n state.context.align = true;\n\n var tok = stream.current();\n if (tok == \"(\")\n pushContext(stream, state, \")\");\n else if (tok == \"[\")\n pushContext(stream, state, \"]\");\n else if (state.context && state.context.type == tok)\n popContext(state);\n return style;\n },\n\n indent: function(state, textAfter) {\n var cx = state.context;\n if (!cx) return CodeMirror.Pass;\n var closing = textAfter.charAt(0) == cx.type;\n if (cx.align) return cx.col + (closing ? 0 : 1);\n else return cx.indent + (closing ? 0 : config.indentUnit);\n },\n\n blockCommentStart: \"/*\",\n blockCommentEnd: \"*/\",\n lineComment: support.commentSlashSlash ? \"//\" : support.commentHash ? \"#\" : \"--\",\n closeBrackets: \"()[]{}''\\\"\\\"``\",\n config: parserConfig\n };\n});\n\n // `identifier`\n function hookIdentifier(stream) {\n // MySQL/MariaDB identifiers\n // ref: https://dev.mysql.com/doc/refman/8.0/en/identifier-qualifiers.html\n var ch;\n while ((ch = stream.next()) != null) {\n if (ch == \"`\" && !stream.eat(\"`\")) return \"variable-2\";\n }\n stream.backUp(stream.current().length - 1);\n return stream.eatWhile(/\\w/) ? \"variable-2\" : null;\n }\n\n // \"identifier\"\n function hookIdentifierDoublequote(stream) {\n // Standard SQL /SQLite identifiers\n // ref: http://web.archive.org/web/20160813185132/http://savage.net.au/SQL/sql-99.bnf.html#delimited%20identifier\n // ref: http://sqlite.org/lang_keywords.html\n var ch;\n while ((ch = stream.next()) != null) {\n if (ch == \"\\\"\" && !stream.eat(\"\\\"\")) return \"variable-2\";\n }\n stream.backUp(stream.current().length - 1);\n return stream.eatWhile(/\\w/) ? \"variable-2\" : null;\n }\n\n // variable token\n function hookVar(stream) {\n // variables\n // @@prefix.varName @varName\n // varName can be quoted with ` or ' or \"\n // ref: https://dev.mysql.com/doc/refman/8.0/en/user-variables.html\n if (stream.eat(\"@\")) {\n stream.match('session.');\n stream.match('local.');\n stream.match('global.');\n }\n\n if (stream.eat(\"'\")) {\n stream.match(/^.*'/);\n return \"variable-2\";\n } else if (stream.eat('\"')) {\n stream.match(/^.*\"/);\n return \"variable-2\";\n } else if (stream.eat(\"`\")) {\n stream.match(/^.*`/);\n return \"variable-2\";\n } else if (stream.match(/^[0-9a-zA-Z$\\.\\_]+/)) {\n return \"variable-2\";\n }\n return null;\n };\n\n // short client keyword token\n function hookClient(stream) {\n // \\N means NULL\n // ref: https://dev.mysql.com/doc/refman/8.0/en/null-values.html\n if (stream.eat(\"N\")) {\n return \"atom\";\n }\n // \\g, etc\n // ref: https://dev.mysql.com/doc/refman/8.0/en/mysql-commands.html\n return stream.match(/^[a-zA-Z.#!?]/) ? \"variable-2\" : null;\n }\n\n // these keywords are used by all SQL dialects (however, a mode can still overwrite it)\n var sqlKeywords = \"alter and as asc between by count create delete desc distinct drop from group having in insert into is join like not on or order select set table union update values where limit \";\n\n // turn a space-separated list into an array\n function set(str) {\n var obj = {}, words = str.split(\" \");\n for (var i = 0; i < words.length; ++i) obj[words[i]] = true;\n return obj;\n }\n\n var defaultBuiltin = \"bool boolean bit blob enum long longblob longtext medium mediumblob mediumint mediumtext time timestamp tinyblob tinyint tinytext text bigint int int1 int2 int3 int4 int8 integer float float4 float8 double char varbinary varchar varcharacter precision real date datetime year unsigned signed decimal numeric\"\n\n // A generic SQL Mode. It's not a standard, it just tries to support what is generally supported\n CodeMirror.defineMIME(\"text/x-sql\", {\n name: \"sql\",\n keywords: set(sqlKeywords + \"begin\"),\n builtin: set(defaultBuiltin),\n atoms: set(\"false true null unknown\"),\n dateSQL: set(\"date time timestamp\"),\n support: set(\"doubleQuote binaryNumber hexNumber\")\n });\n\n CodeMirror.defineMIME(\"text/x-mssql\", {\n name: \"sql\",\n client: set(\"$partition binary_checksum checksum connectionproperty context_info current_request_id error_line error_message error_number error_procedure error_severity error_state formatmessage get_filestream_transaction_context getansinull host_id host_name isnull isnumeric min_active_rowversion newid newsequentialid rowcount_big xact_state object_id\"),\n keywords: set(sqlKeywords + \"begin trigger proc view index for add constraint key primary foreign collate clustered nonclustered declare exec go if use index holdlock nolock nowait paglock readcommitted readcommittedlock readpast readuncommitted repeatableread rowlock serializable snapshot tablock tablockx updlock with\"),\n builtin: set(\"bigint numeric bit smallint decimal smallmoney int tinyint money float real char varchar text nchar nvarchar ntext binary varbinary image cursor timestamp hierarchyid uniqueidentifier sql_variant xml table \"),\n atoms: set(\"is not null like and or in left right between inner outer join all any some cross unpivot pivot exists\"),\n operatorChars: /^[*+\\-%<>!=^\\&|\\/]/,\n brackets: /^[\\{}\\(\\)]/,\n punctuation: /^[;.,:/]/,\n backslashStringEscapes: false,\n dateSQL: set(\"date datetimeoffset datetime2 smalldatetime datetime time\"),\n hooks: {\n \"@\": hookVar\n }\n });\n\n CodeMirror.defineMIME(\"text/x-mysql\", {\n name: \"sql\",\n client: set(\"charset clear connect edit ego exit go help nopager notee nowarning pager print prompt quit rehash source status system tee\"),\n keywords: set(sqlKeywords + \"accessible action add after algorithm all analyze asensitive at authors auto_increment autocommit avg avg_row_length before binary binlog both btree cache call cascade cascaded case catalog_name chain change changed character check checkpoint checksum class_origin client_statistics close coalesce code collate collation collations column columns comment commit committed completion concurrent condition connection consistent constraint contains continue contributors convert cross current current_date current_time current_timestamp current_user cursor data database databases day_hour day_microsecond day_minute day_second deallocate dec declare default delay_key_write delayed delimiter des_key_file describe deterministic dev_pop dev_samp deviance diagnostics directory disable discard distinctrow div dual dumpfile each elseif enable enclosed end ends engine engines enum errors escape escaped even event events every execute exists exit explain extended fast fetch field fields first flush for force foreign found_rows full fulltext function general get global grant grants group group_concat handler hash help high_priority hosts hour_microsecond hour_minute hour_second if ignore ignore_server_ids import index index_statistics infile inner innodb inout insensitive insert_method install interval invoker isolation iterate key keys kill language last leading leave left level limit linear lines list load local localtime localtimestamp lock logs low_priority master master_heartbeat_period master_ssl_verify_server_cert masters match max max_rows maxvalue message_text middleint migrate min min_rows minute_microsecond minute_second mod mode modifies modify mutex mysql_errno natural next no no_write_to_binlog offline offset one online open optimize option optionally out outer outfile pack_keys parser partition partitions password phase plugin plugins prepare preserve prev primary privileges procedure processlist profile profiles purge query quick range read read_write reads real rebuild recover references regexp relaylog release remove rename reorganize repair repeatable replace require resignal restrict resume return returns revoke right rlike rollback rollup row row_format rtree savepoint schedule schema schema_name schemas second_microsecond security sensitive separator serializable server session share show signal slave slow smallint snapshot soname spatial specific sql sql_big_result sql_buffer_result sql_cache sql_calc_found_rows sql_no_cache sql_small_result sqlexception sqlstate sqlwarning ssl start starting starts status std stddev stddev_pop stddev_samp storage straight_join subclass_origin sum suspend table_name table_statistics tables tablespace temporary terminated to trailing transaction trigger triggers truncate uncommitted undo uninstall unique unlock upgrade usage use use_frm user user_resources user_statistics using utc_date utc_time utc_timestamp value variables varying view views warnings when while with work write xa xor year_month zerofill begin do then else loop repeat\"),\n builtin: set(\"bool boolean bit blob decimal double float long longblob longtext medium mediumblob mediumint mediumtext time timestamp tinyblob tinyint tinytext text bigint int int1 int2 int3 int4 int8 integer float float4 float8 double char varbinary varchar varcharacter precision date datetime year unsigned signed numeric\"),\n atoms: set(\"false true null unknown\"),\n operatorChars: /^[*+\\-%<>!=&|^]/,\n dateSQL: set(\"date time timestamp\"),\n support: set(\"decimallessFloat zerolessFloat binaryNumber hexNumber doubleQuote nCharCast charsetCast commentHash commentSpaceRequired\"),\n hooks: {\n \"@\": hookVar,\n \"`\": hookIdentifier,\n \"\\\\\": hookClient\n }\n });\n\n CodeMirror.defineMIME(\"text/x-mariadb\", {\n name: \"sql\",\n client: set(\"charset clear connect edit ego exit go help nopager notee nowarning pager print prompt quit rehash source status system tee\"),\n keywords: set(sqlKeywords + \"accessible action add after algorithm all always analyze asensitive at authors auto_increment autocommit avg avg_row_length before binary binlog both btree cache call cascade cascaded case catalog_name chain change changed character check checkpoint checksum class_origin client_statistics close coalesce code collate collation collations column columns comment commit committed completion concurrent condition connection consistent constraint contains continue contributors convert cross current current_date current_time current_timestamp current_user cursor data database databases day_hour day_microsecond day_minute day_second deallocate dec declare default delay_key_write delayed delimiter des_key_file describe deterministic dev_pop dev_samp deviance diagnostics directory disable discard distinctrow div dual dumpfile each elseif enable enclosed end ends engine engines enum errors escape escaped even event events every execute exists exit explain extended fast fetch field fields first flush for force foreign found_rows full fulltext function general generated get global grant grants group group_concat handler hard hash help high_priority hosts hour_microsecond hour_minute hour_second if ignore ignore_server_ids import index index_statistics infile inner innodb inout insensitive insert_method install interval invoker isolation iterate key keys kill language last leading leave left level limit linear lines list load local localtime localtimestamp lock logs low_priority master master_heartbeat_period master_ssl_verify_server_cert masters match max max_rows maxvalue message_text middleint migrate min min_rows minute_microsecond minute_second mod mode modifies modify mutex mysql_errno natural next no no_write_to_binlog offline offset one online open optimize option optionally out outer outfile pack_keys parser partition partitions password persistent phase plugin plugins prepare preserve prev primary privileges procedure processlist profile profiles purge query quick range read read_write reads real rebuild recover references regexp relaylog release remove rename reorganize repair repeatable replace require resignal restrict resume return returns revoke right rlike rollback rollup row row_format rtree savepoint schedule schema schema_name schemas second_microsecond security sensitive separator serializable server session share show shutdown signal slave slow smallint snapshot soft soname spatial specific sql sql_big_result sql_buffer_result sql_cache sql_calc_found_rows sql_no_cache sql_small_result sqlexception sqlstate sqlwarning ssl start starting starts status std stddev stddev_pop stddev_samp storage straight_join subclass_origin sum suspend table_name table_statistics tables tablespace temporary terminated to trailing transaction trigger triggers truncate uncommitted undo uninstall unique unlock upgrade usage use use_frm user user_resources user_statistics using utc_date utc_time utc_timestamp value variables varying view views virtual warnings when while with work write xa xor year_month zerofill begin do then else loop repeat\"),\n builtin: set(\"bool boolean bit blob decimal double float long longblob longtext medium mediumblob mediumint mediumtext time timestamp tinyblob tinyint tinytext text bigint int int1 int2 int3 int4 int8 integer float float4 float8 double char varbinary varchar varcharacter precision date datetime year unsigned signed numeric\"),\n atoms: set(\"false true null unknown\"),\n operatorChars: /^[*+\\-%<>!=&|^]/,\n dateSQL: set(\"date time timestamp\"),\n support: set(\"decimallessFloat zerolessFloat binaryNumber hexNumber doubleQuote nCharCast charsetCast commentHash commentSpaceRequired\"),\n hooks: {\n \"@\": hookVar,\n \"`\": hookIdentifier,\n \"\\\\\": hookClient\n }\n });\n\n // provided by the phpLiteAdmin project - phpliteadmin.org\n CodeMirror.defineMIME(\"text/x-sqlite\", {\n name: \"sql\",\n // commands of the official SQLite client, ref: https://www.sqlite.org/cli.html#dotcmd\n client: set(\"auth backup bail binary changes check clone databases dbinfo dump echo eqp exit explain fullschema headers help import imposter indexes iotrace limit lint load log mode nullvalue once open output print prompt quit read restore save scanstats schema separator session shell show stats system tables testcase timeout timer trace vfsinfo vfslist vfsname width\"),\n // ref: http://sqlite.org/lang_keywords.html\n keywords: set(sqlKeywords + \"abort action add after all analyze attach autoincrement before begin cascade case cast check collate column commit conflict constraint cross current_date current_time current_timestamp database default deferrable deferred detach each else end escape except exclusive exists explain fail for foreign full glob if ignore immediate index indexed initially inner instead intersect isnull key left limit match natural no notnull null of offset outer plan pragma primary query raise recursive references regexp reindex release rename replace restrict right rollback row savepoint temp temporary then to transaction trigger unique using vacuum view virtual when with without\"),\n // SQLite is weakly typed, ref: http://sqlite.org/datatype3.html. This is just a list of some common types.\n builtin: set(\"bool boolean bit blob decimal double float long longblob longtext medium mediumblob mediumint mediumtext time timestamp tinyblob tinyint tinytext text clob bigint int int2 int8 integer float double char varchar date datetime year unsigned signed numeric real\"),\n // ref: http://sqlite.org/syntax/literal-value.html\n atoms: set(\"null current_date current_time current_timestamp\"),\n // ref: http://sqlite.org/lang_expr.html#binaryops\n operatorChars: /^[*+\\-%<>!=&|/~]/,\n // SQLite is weakly typed, ref: http://sqlite.org/datatype3.html. This is just a list of some common types.\n dateSQL: set(\"date time timestamp datetime\"),\n support: set(\"decimallessFloat zerolessFloat\"),\n identifierQuote: \"\\\"\", //ref: http://sqlite.org/lang_keywords.html\n hooks: {\n // bind-parameters ref:http://sqlite.org/lang_expr.html#varparam\n \"@\": hookVar,\n \":\": hookVar,\n \"?\": hookVar,\n \"$\": hookVar,\n // The preferred way to escape Identifiers is using double quotes, ref: http://sqlite.org/lang_keywords.html\n \"\\\"\": hookIdentifierDoublequote,\n // there is also support for backticks, ref: http://sqlite.org/lang_keywords.html\n \"`\": hookIdentifier\n }\n });\n\n // the query language used by Apache Cassandra is called CQL, but this mime type\n // is called Cassandra to avoid confusion with Contextual Query Language\n CodeMirror.defineMIME(\"text/x-cassandra\", {\n name: \"sql\",\n client: { },\n keywords: set(\"add all allow alter and any apply as asc authorize batch begin by clustering columnfamily compact consistency count create custom delete desc distinct drop each_quorum exists filtering from grant if in index insert into key keyspace keyspaces level limit local_one local_quorum modify nan norecursive nosuperuser not of on one order password permission permissions primary quorum rename revoke schema select set storage superuser table three to token truncate ttl two type unlogged update use user users using values where with writetime\"),\n builtin: set(\"ascii bigint blob boolean counter decimal double float frozen inet int list map static text timestamp timeuuid tuple uuid varchar varint\"),\n atoms: set(\"false true infinity NaN\"),\n operatorChars: /^[<>=]/,\n dateSQL: { },\n support: set(\"commentSlashSlash decimallessFloat\"),\n hooks: { }\n });\n\n // this is based on Peter Raganitsch's 'plsql' mode\n CodeMirror.defineMIME(\"text/x-plsql\", {\n name: \"sql\",\n client: set(\"appinfo arraysize autocommit autoprint autorecovery autotrace blockterminator break btitle cmdsep colsep compatibility compute concat copycommit copytypecheck define describe echo editfile embedded escape exec execute feedback flagger flush heading headsep instance linesize lno loboffset logsource long longchunksize markup native newpage numformat numwidth pagesize pause pno recsep recsepchar release repfooter repheader serveroutput shiftinout show showmode size spool sqlblanklines sqlcase sqlcode sqlcontinue sqlnumber sqlpluscompatibility sqlprefix sqlprompt sqlterminator suffix tab term termout time timing trimout trimspool ttitle underline verify version wrap\"),\n keywords: set(\"abort accept access add all alter and any array arraylen as asc assert assign at attributes audit authorization avg base_table begin between binary_integer body boolean by case cast char char_base check close cluster clusters colauth column comment commit compress connect connected constant constraint crash create current currval cursor data_base database date dba deallocate debugoff debugon decimal declare default definition delay delete desc digits dispose distinct do drop else elseif elsif enable end entry escape exception exception_init exchange exclusive exists exit external fast fetch file for force form from function generic goto grant group having identified if immediate in increment index indexes indicator initial initrans insert interface intersect into is key level library like limited local lock log logging long loop master maxextents maxtrans member minextents minus mislabel mode modify multiset new next no noaudit nocompress nologging noparallel not nowait number_base object of off offline on online only open option or order out package parallel partition pctfree pctincrease pctused pls_integer positive positiven pragma primary prior private privileges procedure public raise range raw read rebuild record ref references refresh release rename replace resource restrict return returning returns reverse revoke rollback row rowid rowlabel rownum rows run savepoint schema segment select separate session set share snapshot some space split sql start statement storage subtype successful synonym tabauth table tables tablespace task terminate then to trigger truncate type union unique unlimited unrecoverable unusable update use using validate value values variable view views when whenever where while with work\"),\n builtin: set(\"abs acos add_months ascii asin atan atan2 average bfile bfilename bigserial bit blob ceil character chartorowid chr clob concat convert cos cosh count dec decode deref dual dump dup_val_on_index empty error exp false float floor found glb greatest hextoraw initcap instr instrb int integer isopen last_day least length lengthb ln lower lpad ltrim lub make_ref max min mlslabel mod months_between natural naturaln nchar nclob new_time next_day nextval nls_charset_decl_len nls_charset_id nls_charset_name nls_initcap nls_lower nls_sort nls_upper nlssort no_data_found notfound null number numeric nvarchar2 nvl others power rawtohex real reftohex round rowcount rowidtochar rowtype rpad rtrim serial sign signtype sin sinh smallint soundex sqlcode sqlerrm sqrt stddev string substr substrb sum sysdate tan tanh to_char text to_date to_label to_multi_byte to_number to_single_byte translate true trunc uid unlogged upper user userenv varchar varchar2 variance varying vsize xml\"),\n operatorChars: /^[*\\/+\\-%<>!=~]/,\n dateSQL: set(\"date time timestamp\"),\n support: set(\"doubleQuote nCharCast zerolessFloat binaryNumber hexNumber\")\n });\n\n // Created to support specific hive keywords\n CodeMirror.defineMIME(\"text/x-hive\", {\n name: \"sql\",\n keywords: set(\"select alter $elem$ $key$ $value$ add after all analyze and archive as asc before between binary both bucket buckets by cascade case cast change cluster clustered clusterstatus collection column columns comment compute concatenate continue create cross cursor data database databases dbproperties deferred delete delimited desc describe directory disable distinct distribute drop else enable end escaped exclusive exists explain export extended external fetch fields fileformat first format formatted from full function functions grant group having hold_ddltime idxproperties if import in index indexes inpath inputdriver inputformat insert intersect into is items join keys lateral left like limit lines load local location lock locks mapjoin materialized minus msck no_drop nocompress not of offline on option or order out outer outputdriver outputformat overwrite partition partitioned partitions percent plus preserve procedure purge range rcfile read readonly reads rebuild recordreader recordwriter recover reduce regexp rename repair replace restrict revoke right rlike row schema schemas semi sequencefile serde serdeproperties set shared show show_database sort sorted ssl statistics stored streamtable table tables tablesample tblproperties temporary terminated textfile then tmp to touch transform trigger unarchive undo union uniquejoin unlock update use using utc utc_tmestamp view when where while with admin authorization char compact compactions conf cube current current_date current_timestamp day decimal defined dependency directories elem_type exchange file following for grouping hour ignore inner interval jar less logical macro minute month more none noscan over owner partialscan preceding pretty principals protection reload rewrite role roles rollup rows second server sets skewed transactions truncate unbounded unset uri user values window year\"),\n builtin: set(\"bool boolean long timestamp tinyint smallint bigint int float double date datetime unsigned string array struct map uniontype key_type utctimestamp value_type varchar\"),\n atoms: set(\"false true null unknown\"),\n operatorChars: /^[*+\\-%<>!=]/,\n dateSQL: set(\"date timestamp\"),\n support: set(\"doubleQuote binaryNumber hexNumber\")\n });\n\n CodeMirror.defineMIME(\"text/x-pgsql\", {\n name: \"sql\",\n client: set(\"source\"),\n // For PostgreSQL - https://www.postgresql.org/docs/11/sql-keywords-appendix.html\n // For pl/pgsql lang - https://github.com/postgres/postgres/blob/REL_11_2/src/pl/plpgsql/src/pl_scanner.c\n keywords: set(sqlKeywords + \"a abort abs absent absolute access according action ada add admin after aggregate alias all allocate also alter always analyse analyze and any are array array_agg array_max_cardinality as asc asensitive assert assertion assignment asymmetric at atomic attach attribute attributes authorization avg backward base64 before begin begin_frame begin_partition bernoulli between bigint binary bit bit_length blob blocked bom boolean both breadth by c cache call called cardinality cascade cascaded case cast catalog catalog_name ceil ceiling chain char char_length character character_length character_set_catalog character_set_name character_set_schema characteristics characters check checkpoint class class_origin clob close cluster coalesce cobol collate collation collation_catalog collation_name collation_schema collect column column_name columns command_function command_function_code comment comments commit committed concurrently condition condition_number configuration conflict connect connection connection_name constant constraint constraint_catalog constraint_name constraint_schema constraints constructor contains content continue control conversion convert copy corr corresponding cost count covar_pop covar_samp create cross csv cube cume_dist current current_catalog current_date current_default_transform_group current_path current_role current_row current_schema current_time current_timestamp current_transform_group_for_type current_user cursor cursor_name cycle data database datalink datatype date datetime_interval_code datetime_interval_precision day db deallocate debug dec decimal declare default defaults deferrable deferred defined definer degree delete delimiter delimiters dense_rank depends depth deref derived desc describe descriptor detach detail deterministic diagnostics dictionary disable discard disconnect dispatch distinct dlnewcopy dlpreviouscopy dlurlcomplete dlurlcompleteonly dlurlcompletewrite dlurlpath dlurlpathonly dlurlpathwrite dlurlscheme dlurlserver dlvalue do document domain double drop dump dynamic dynamic_function dynamic_function_code each element else elseif elsif empty enable encoding encrypted end end_frame end_partition endexec enforced enum equals errcode error escape event every except exception exclude excluding exclusive exec execute exists exit exp explain expression extension external extract false family fetch file filter final first first_value flag float floor following for force foreach foreign fortran forward found frame_row free freeze from fs full function functions fusion g general generated get global go goto grant granted greatest group grouping groups handler having header hex hierarchy hint hold hour id identity if ignore ilike immediate immediately immutable implementation implicit import in include including increment indent index indexes indicator info inherit inherits initially inline inner inout input insensitive insert instance instantiable instead int integer integrity intersect intersection interval into invoker is isnull isolation join k key key_member key_type label lag language large last last_value lateral lead leading leakproof least left length level library like like_regex limit link listen ln load local localtime localtimestamp location locator lock locked log logged loop lower m map mapping match matched materialized max max_cardinality maxvalue member merge message message_length message_octet_length message_text method min minute minvalue mod mode modifies module month more move multiset mumps name names namespace national natural nchar nclob nesting new next nfc nfd nfkc nfkd nil no none normalize normalized not nothing notice notify notnull nowait nth_value ntile null nullable nullif nulls number numeric object occurrences_regex octet_length octets of off offset oids old on only open operator option options or order ordering ordinality others out outer output over overlaps overlay overriding owned owner p pad parallel parameter parameter_mode parameter_name parameter_ordinal_position parameter_specific_catalog parameter_specific_name parameter_specific_schema parser partial partition pascal passing passthrough password path percent percent_rank percentile_cont percentile_disc perform period permission pg_context pg_datatype_name pg_exception_context pg_exception_detail pg_exception_hint placing plans pli policy portion position position_regex power precedes preceding precision prepare prepared preserve primary print_strict_params prior privileges procedural procedure procedures program public publication query quote raise range rank read reads real reassign recheck recovery recursive ref references referencing refresh regr_avgx regr_avgy regr_count regr_intercept regr_r2 regr_slope regr_sxx regr_sxy regr_syy reindex relative release rename repeatable replace replica requiring reset respect restart restore restrict result result_oid return returned_cardinality returned_length returned_octet_length returned_sqlstate returning returns reverse revoke right role rollback rollup routine routine_catalog routine_name routine_schema routines row row_count row_number rows rowtype rule savepoint scale schema schema_name schemas scope scope_catalog scope_name scope_schema scroll search second section security select selective self sensitive sequence sequences serializable server server_name session session_user set setof sets share show similar simple size skip slice smallint snapshot some source space specific specific_name specifictype sql sqlcode sqlerror sqlexception sqlstate sqlwarning sqrt stable stacked standalone start state statement static statistics stddev_pop stddev_samp stdin stdout storage strict strip structure style subclass_origin submultiset subscription substring substring_regex succeeds sum symmetric sysid system system_time system_user t table table_name tables tablesample tablespace temp template temporary text then ties time timestamp timezone_hour timezone_minute to token top_level_count trailing transaction transaction_active transactions_committed transactions_rolled_back transform transforms translate translate_regex translation treat trigger trigger_catalog trigger_name trigger_schema trim trim_array true truncate trusted type types uescape unbounded uncommitted under unencrypted union unique unknown unlink unlisten unlogged unnamed unnest until untyped update upper uri usage use_column use_variable user user_defined_type_catalog user_defined_type_code user_defined_type_name user_defined_type_schema using vacuum valid validate validator value value_of values var_pop var_samp varbinary varchar variable_conflict variadic varying verbose version versioning view views volatile warning when whenever where while whitespace width_bucket window with within without work wrapper write xml xmlagg xmlattributes xmlbinary xmlcast xmlcomment xmlconcat xmldeclaration xmldocument xmlelement xmlexists xmlforest xmliterate xmlnamespaces xmlparse xmlpi xmlquery xmlroot xmlschema xmlserialize xmltable xmltext xmlvalidate year yes zone\"),\n // https://www.postgresql.org/docs/11/datatype.html\n builtin: set(\"bigint int8 bigserial serial8 bit varying varbit boolean bool box bytea character char varchar cidr circle date double precision float8 inet integer int int4 interval json jsonb line lseg macaddr macaddr8 money numeric decimal path pg_lsn point polygon real float4 smallint int2 smallserial serial2 serial serial4 text time zone timetz timestamp timestamptz tsquery tsvector txid_snapshot uuid xml\"),\n atoms: set(\"false true null unknown\"),\n operatorChars: /^[*\\/+\\-%<>!=&|^\\/#@?~]/,\n backslashStringEscapes: false,\n identifierQuote: \"\\\"\", // https://www.postgresql.org/docs/current/sql-syntax-lexical.html#SQL-SYNTAX-IDENTIFIERS\n hooks: {\n \"\\\"\": hookIdentifierDoublequote\n },\n dateSQL: set(\"date time timestamp\"),\n support: set(\"decimallessFloat zerolessFloat binaryNumber hexNumber nCharCast charsetCast escapeConstant\")\n });\n\n // Google's SQL-like query language, GQL\n CodeMirror.defineMIME(\"text/x-gql\", {\n name: \"sql\",\n keywords: set(\"ancestor and asc by contains desc descendant distinct from group has in is limit offset on order select superset where\"),\n atoms: set(\"false true\"),\n builtin: set(\"blob datetime first key __key__ string integer double boolean null\"),\n operatorChars: /^[*+\\-%<>!=]/\n });\n\n // Greenplum\n CodeMirror.defineMIME(\"text/x-gpsql\", {\n name: \"sql\",\n client: set(\"source\"),\n //https://github.com/greenplum-db/gpdb/blob/master/src/include/parser/kwlist.h\n keywords: set(\"abort absolute access action active add admin after aggregate all also alter always analyse analyze and any array as asc assertion assignment asymmetric at authorization backward before begin between bigint binary bit boolean both by cache called cascade cascaded case cast chain char character characteristics check checkpoint class close cluster coalesce codegen collate column comment commit committed concurrency concurrently configuration connection constraint constraints contains content continue conversion copy cost cpu_rate_limit create createdb createexttable createrole createuser cross csv cube current current_catalog current_date current_role current_schema current_time current_timestamp current_user cursor cycle data database day deallocate dec decimal declare decode default defaults deferrable deferred definer delete delimiter delimiters deny desc dictionary disable discard distinct distributed do document domain double drop dxl each else enable encoding encrypted end enum errors escape every except exchange exclude excluding exclusive execute exists explain extension external extract false family fetch fields filespace fill filter first float following for force foreign format forward freeze from full function global grant granted greatest group group_id grouping handler hash having header hold host hour identity if ignore ilike immediate immutable implicit in including inclusive increment index indexes inherit inherits initially inline inner inout input insensitive insert instead int integer intersect interval into invoker is isnull isolation join key language large last leading least left level like limit list listen load local localtime localtimestamp location lock log login mapping master match maxvalue median merge minute minvalue missing mode modifies modify month move name names national natural nchar new newline next no nocreatedb nocreateexttable nocreaterole nocreateuser noinherit nologin none noovercommit nosuperuser not nothing notify notnull nowait null nullif nulls numeric object of off offset oids old on only operator option options or order ordered others out outer over overcommit overlaps overlay owned owner parser partial partition partitions passing password percent percentile_cont percentile_disc placing plans position preceding precision prepare prepared preserve primary prior privileges procedural procedure protocol queue quote randomly range read readable reads real reassign recheck recursive ref references reindex reject relative release rename repeatable replace replica reset resource restart restrict returning returns revoke right role rollback rollup rootpartition row rows rule savepoint scatter schema scroll search second security segment select sequence serializable session session_user set setof sets share show similar simple smallint some split sql stable standalone start statement statistics stdin stdout storage strict strip subpartition subpartitions substring superuser symmetric sysid system table tablespace temp template temporary text then threshold ties time timestamp to trailing transaction treat trigger trim true truncate trusted type unbounded uncommitted unencrypted union unique unknown unlisten until update user using vacuum valid validation validator value values varchar variadic varying verbose version view volatile web when where whitespace window with within without work writable write xml xmlattributes xmlconcat xmlelement xmlexists xmlforest xmlparse xmlpi xmlroot xmlserialize year yes zone\"),\n builtin: set(\"bigint int8 bigserial serial8 bit varying varbit boolean bool box bytea character char varchar cidr circle date double precision float float8 inet integer int int4 interval json jsonb line lseg macaddr macaddr8 money numeric decimal path pg_lsn point polygon real float4 smallint int2 smallserial serial2 serial serial4 text time without zone with timetz timestamp timestamptz tsquery tsvector txid_snapshot uuid xml\"),\n atoms: set(\"false true null unknown\"),\n operatorChars: /^[*+\\-%<>!=&|^\\/#@?~]/,\n dateSQL: set(\"date time timestamp\"),\n support: set(\"decimallessFloat zerolessFloat binaryNumber hexNumber nCharCast charsetCast\")\n });\n\n // Spark SQL\n CodeMirror.defineMIME(\"text/x-sparksql\", {\n name: \"sql\",\n keywords: set(\"add after all alter analyze and anti archive array as asc at between bucket buckets by cache cascade case cast change clear cluster clustered codegen collection column columns comment commit compact compactions compute concatenate cost create cross cube current current_date current_timestamp database databases data dbproperties defined delete delimited deny desc describe dfs directories distinct distribute drop else end escaped except exchange exists explain export extended external false fields fileformat first following for format formatted from full function functions global grant group grouping having if ignore import in index indexes inner inpath inputformat insert intersect interval into is items join keys last lateral lazy left like limit lines list load local location lock locks logical macro map minus msck natural no not null nulls of on optimize option options or order out outer outputformat over overwrite partition partitioned partitions percent preceding principals purge range recordreader recordwriter recover reduce refresh regexp rename repair replace reset restrict revoke right rlike role roles rollback rollup row rows schema schemas select semi separated serde serdeproperties set sets show skewed sort sorted start statistics stored stratify struct table tables tablesample tblproperties temp temporary terminated then to touch transaction transactions transform true truncate unarchive unbounded uncache union unlock unset use using values view when where window with\"),\n builtin: set(\"abs acos acosh add_months aggregate and any approx_count_distinct approx_percentile array array_contains array_distinct array_except array_intersect array_join array_max array_min array_position array_remove array_repeat array_sort array_union arrays_overlap arrays_zip ascii asin asinh assert_true atan atan2 atanh avg base64 between bigint bin binary bit_and bit_count bit_get bit_length bit_or bit_xor bool_and bool_or boolean bround btrim cardinality case cast cbrt ceil ceiling char char_length character_length chr coalesce collect_list collect_set concat concat_ws conv corr cos cosh cot count count_if count_min_sketch covar_pop covar_samp crc32 cume_dist current_catalog current_database current_date current_timestamp current_timezone current_user date date_add date_format date_from_unix_date date_part date_sub date_trunc datediff day dayofmonth dayofweek dayofyear decimal decode degrees delimited dense_rank div double e element_at elt encode every exists exp explode explode_outer expm1 extract factorial filter find_in_set first first_value flatten float floor forall format_number format_string from_csv from_json from_unixtime from_utc_timestamp get_json_object getbit greatest grouping grouping_id hash hex hour hypot if ifnull in initcap inline inline_outer input_file_block_length input_file_block_start input_file_name inputformat instr int isnan isnotnull isnull java_method json_array_length json_object_keys json_tuple kurtosis lag last last_day last_value lcase lead least left length levenshtein like ln locate log log10 log1p log2 lower lpad ltrim make_date make_dt_interval make_interval make_timestamp make_ym_interval map map_concat map_entries map_filter map_from_arrays map_from_entries map_keys map_values map_zip_with max max_by md5 mean min min_by minute mod monotonically_increasing_id month months_between named_struct nanvl negative next_day not now nth_value ntile nullif nvl nvl2 octet_length or outputformat overlay parse_url percent_rank percentile percentile_approx pi pmod posexplode posexplode_outer position positive pow power printf quarter radians raise_error rand randn random rank rcfile reflect regexp regexp_extract regexp_extract_all regexp_like regexp_replace repeat replace reverse right rint rlike round row_number rpad rtrim schema_of_csv schema_of_json second sentences sequence sequencefile serde session_window sha sha1 sha2 shiftleft shiftright shiftrightunsigned shuffle sign signum sin sinh size skewness slice smallint some sort_array soundex space spark_partition_id split sqrt stack std stddev stddev_pop stddev_samp str_to_map string struct substr substring substring_index sum tan tanh textfile timestamp timestamp_micros timestamp_millis timestamp_seconds tinyint to_csv to_date to_json to_timestamp to_unix_timestamp to_utc_timestamp transform transform_keys transform_values translate trim trunc try_add try_divide typeof ucase unbase64 unhex uniontype unix_date unix_micros unix_millis unix_seconds unix_timestamp upper uuid var_pop var_samp variance version weekday weekofyear when width_bucket window xpath xpath_boolean xpath_double xpath_float xpath_int xpath_long xpath_number xpath_short xpath_string xxhash64 year zip_with\"),\n atoms: set(\"false true null\"),\n operatorChars: /^[*\\/+\\-%<>!=~&|^]/,\n dateSQL: set(\"date time timestamp\"),\n support: set(\"doubleQuote zerolessFloat\")\n });\n\n // Esper\n CodeMirror.defineMIME(\"text/x-esper\", {\n name: \"sql\",\n client: set(\"source\"),\n // http://www.espertech.com/esper/release-5.5.0/esper-reference/html/appendix_keywords.html\n keywords: set(\"alter and as asc between by count create delete desc distinct drop from group having in insert into is join like not on or order select set table union update values where limit after all and as at asc avedev avg between by case cast coalesce count create current_timestamp day days delete define desc distinct else end escape events every exists false first from full group having hour hours in inner insert instanceof into irstream is istream join last lastweekday left limit like max match_recognize matches median measures metadatasql min minute minutes msec millisecond milliseconds not null offset on or order outer output partition pattern prev prior regexp retain-union retain-intersection right rstream sec second seconds select set some snapshot sql stddev sum then true unidirectional until update variable weekday when where window\"),\n builtin: {},\n atoms: set(\"false true null\"),\n operatorChars: /^[*+\\-%<>!=&|^\\/#@?~]/,\n dateSQL: set(\"time\"),\n support: set(\"decimallessFloat zerolessFloat binaryNumber hexNumber\")\n });\n\n // Trino (formerly known as Presto)\n CodeMirror.defineMIME(\"text/x-trino\", {\n name: \"sql\",\n // https://github.com/trinodb/trino/blob/bc7a4eeedde28684c7ae6f74cefcaf7c6e782174/core/trino-parser/src/main/antlr4/io/trino/sql/parser/SqlBase.g4#L859-L1129\n // https://github.com/trinodb/trino/blob/bc7a4eeedde28684c7ae6f74cefcaf7c6e782174/docs/src/main/sphinx/functions/list.rst\n keywords: set(\"abs absent acos add admin after all all_match alter analyze and any any_match approx_distinct approx_most_frequent approx_percentile approx_set arbitrary array_agg array_distinct array_except array_intersect array_join array_max array_min array_position array_remove array_sort array_union arrays_overlap as asc asin at at_timezone atan atan2 authorization avg bar bernoulli beta_cdf between bing_tile bing_tile_at bing_tile_coordinates bing_tile_polygon bing_tile_quadkey bing_tile_zoom_level bing_tiles_around bit_count bitwise_and bitwise_and_agg bitwise_left_shift bitwise_not bitwise_or bitwise_or_agg bitwise_right_shift bitwise_right_shift_arithmetic bitwise_xor bool_and bool_or both by call cardinality cascade case cast catalogs cbrt ceil ceiling char2hexint checksum chr classify coalesce codepoint column columns combinations comment commit committed concat concat_ws conditional constraint contains contains_sequence convex_hull_agg copartition corr cos cosh cosine_similarity count count_if covar_pop covar_samp crc32 create cross cube cume_dist current current_catalog current_date current_groups current_path current_role current_schema current_time current_timestamp current_timezone current_user data date_add date_diff date_format date_parse date_trunc day day_of_month day_of_week day_of_year deallocate default define definer degrees delete dense_rank deny desc describe descriptor distinct distributed dow doy drop e element_at else empty empty_approx_set encoding end error escape evaluate_classifier_predictions every except excluding execute exists exp explain extract false features fetch filter final first first_value flatten floor following for format format_datetime format_number from from_base from_base32 from_base64 from_base64url from_big_endian_32 from_big_endian_64 from_encoded_polyline from_geojson_geometry from_hex from_ieee754_32 from_ieee754_64 from_iso8601_date from_iso8601_timestamp from_iso8601_timestamp_nanos from_unixtime from_unixtime_nanos from_utf8 full functions geometric_mean geometry_from_hadoop_shape geometry_invalid_reason geometry_nearest_points geometry_to_bing_tiles geometry_union geometry_union_agg grant granted grants graphviz great_circle_distance greatest group grouping groups hamming_distance hash_counts having histogram hmac_md5 hmac_sha1 hmac_sha256 hmac_sha512 hour human_readable_seconds if ignore in including index infinity initial inner input insert intersect intersection_cardinality into inverse_beta_cdf inverse_normal_cdf invoker io is is_finite is_infinite is_json_scalar is_nan isolation jaccard_index join json_array json_array_contains json_array_get json_array_length json_exists json_extract json_extract_scalar json_format json_object json_parse json_query json_size json_value keep key keys kurtosis lag last last_day_of_month last_value lateral lead leading learn_classifier learn_libsvm_classifier learn_libsvm_regressor learn_regressor least left length level levenshtein_distance like limit line_interpolate_point line_interpolate_points line_locate_point listagg ln local localtime localtimestamp log log10 log2 logical lower lpad ltrim luhn_check make_set_digest map_agg map_concat map_entries map_filter map_from_entries map_keys map_union map_values map_zip_with match match_recognize matched matches materialized max max_by md5 measures merge merge_set_digest millisecond min min_by minute mod month multimap_agg multimap_from_entries murmur3 nan natural next nfc nfd nfkc nfkd ngrams no none none_match normal_cdf normalize not now nth_value ntile null nullif nulls numeric_histogram object objectid_timestamp of offset omit on one only option or order ordinality outer output over overflow parse_data_size parse_datetime parse_duration partition partitions passing past path pattern per percent_rank permute pi position pow power preceding prepare privileges properties prune qdigest_agg quarter quotes radians rand random range rank read recursive reduce reduce_agg refresh regexp_count regexp_extract regexp_extract_all regexp_like regexp_position regexp_replace regexp_split regr_intercept regr_slope regress rename render repeat repeatable replace reset respect restrict returning reverse revoke rgb right role roles rollback rollup round row_number rows rpad rtrim running scalar schema schemas second security seek select sequence serializable session set sets sha1 sha256 sha512 show shuffle sign simplify_geometry sin skewness skip slice some soundex spatial_partitioning spatial_partitions split split_part split_to_map split_to_multimap spooky_hash_v2_32 spooky_hash_v2_64 sqrt st_area st_asbinary st_astext st_boundary st_buffer st_centroid st_contains st_convexhull st_coorddim st_crosses st_difference st_dimension st_disjoint st_distance st_endpoint st_envelope st_envelopeaspts st_equals st_exteriorring st_geometries st_geometryfromtext st_geometryn st_geometrytype st_geomfrombinary st_interiorringn st_interiorrings st_intersection st_intersects st_isclosed st_isempty st_isring st_issimple st_isvalid st_length st_linefromtext st_linestring st_multipoint st_numgeometries st_numinteriorring st_numpoints st_overlaps st_point st_pointn st_points st_polygon st_relate st_startpoint st_symdifference st_touches st_union st_within st_x st_xmax st_xmin st_y st_ymax st_ymin start starts_with stats stddev stddev_pop stddev_samp string strpos subset substr substring sum system table tables tablesample tan tanh tdigest_agg text then ties timestamp_objectid timezone_hour timezone_minute to to_base to_base32 to_base64 to_base64url to_big_endian_32 to_big_endian_64 to_char to_date to_encoded_polyline to_geojson_geometry to_geometry to_hex to_ieee754_32 to_ieee754_64 to_iso8601 to_milliseconds to_spherical_geography to_timestamp to_unixtime to_utf8 trailing transaction transform transform_keys transform_values translate trim trim_array true truncate try try_cast type typeof uescape unbounded uncommitted unconditional union unique unknown unmatched unnest update upper url_decode url_encode url_extract_fragment url_extract_host url_extract_parameter url_extract_path url_extract_port url_extract_protocol url_extract_query use user using utf16 utf32 utf8 validate value value_at_quantile values values_at_quantiles var_pop var_samp variance verbose version view week week_of_year when where width_bucket wilson_interval_lower wilson_interval_upper window with with_timezone within without word_stem work wrapper write xxhash64 year year_of_week yow zip zip_with\"),\n // https://github.com/trinodb/trino/blob/bc7a4eeedde28684c7ae6f74cefcaf7c6e782174/core/trino-main/src/main/java/io/trino/metadata/TypeRegistry.java#L131-L168\n // https://github.com/trinodb/trino/blob/bc7a4eeedde28684c7ae6f74cefcaf7c6e782174/plugin/trino-ml/src/main/java/io/trino/plugin/ml/MLPlugin.java#L35\n // https://github.com/trinodb/trino/blob/bc7a4eeedde28684c7ae6f74cefcaf7c6e782174/plugin/trino-mongodb/src/main/java/io/trino/plugin/mongodb/MongoPlugin.java#L32\n // https://github.com/trinodb/trino/blob/bc7a4eeedde28684c7ae6f74cefcaf7c6e782174/plugin/trino-geospatial/src/main/java/io/trino/plugin/geospatial/GeoPlugin.java#L37\n builtin: set(\"array bigint bingtile boolean char codepoints color date decimal double function geometry hyperloglog int integer interval ipaddress joniregexp json json2016 jsonpath kdbtree likepattern map model objectid p4hyperloglog precision qdigest re2jregexp real regressor row setdigest smallint sphericalgeography tdigest time timestamp tinyint uuid varbinary varchar zone\"),\n atoms: set(\"false true null unknown\"),\n // https://trino.io/docs/current/functions/list.html#id1\n operatorChars: /^[[\\]|<>=!\\-+*/%]/,\n dateSQL: set(\"date time timestamp zone\"),\n // hexNumber is necessary for VARBINARY literals, e.g. X'65683F'\n // but it also enables 0xFF hex numbers, which Trino doesn't support.\n support: set(\"decimallessFloat zerolessFloat hexNumber\")\n });\n});\n\n/*\n How Properties of Mime Types are used by SQL Mode\n =================================================\n\n keywords:\n A list of keywords you want to be highlighted.\n builtin:\n A list of builtin types you want to be highlighted (if you want types to be of class \"builtin\" instead of \"keyword\").\n operatorChars:\n All characters that must be handled as operators.\n client:\n Commands parsed and executed by the client (not the server).\n support:\n A list of supported syntaxes which are not common, but are supported by more than 1 DBMS.\n * zerolessFloat: .1\n * decimallessFloat: 1.\n * hexNumber: X'01AF' X'01af' x'01AF' x'01af' 0x01AF 0x01af\n * binaryNumber: b'01' B'01' 0b01\n * doubleQuote: \"string\"\n * escapeConstant: E''\n * nCharCast: N'string'\n * charsetCast: _utf8'string'\n * commentHash: use # char for comments\n * commentSlashSlash: use // for comments\n * commentSpaceRequired: require a space after -- for comments\n atoms:\n Keywords that must be highlighted as atoms,. Some DBMS's support more atoms than others:\n UNKNOWN, INFINITY, UNDERFLOW, NaN...\n dateSQL:\n Used for date/time SQL standard syntax, because not all DBMS's support same temporal types.\n*/\n", "// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/5/LICENSE\n\n// Utility function that allows modes to be combined. The mode given\n// as the base argument takes care of most of the normal mode\n// functionality, but a second (typically simple) mode is used, which\n// can override the style of text. Both modes get to parse all of the\n// text, but when both assign a non-null style to a piece of code, the\n// overlay wins, unless the combine argument was true and not overridden,\n// or state.overlay.combineTokens was true, in which case the styles are\n// combined.\n\n(function(mod) {\n if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n mod(require(\"../../lib/codemirror\"));\n else if (typeof define == \"function\" && define.amd) // AMD\n define([\"../../lib/codemirror\"], mod);\n else // Plain browser env\n mod(CodeMirror);\n})(function(CodeMirror) {\n\"use strict\";\n\nCodeMirror.overlayMode = function(base, overlay, combine) {\n return {\n startState: function() {\n return {\n base: CodeMirror.startState(base),\n overlay: CodeMirror.startState(overlay),\n basePos: 0, baseCur: null,\n overlayPos: 0, overlayCur: null,\n streamSeen: null\n };\n },\n copyState: function(state) {\n return {\n base: CodeMirror.copyState(base, state.base),\n overlay: CodeMirror.copyState(overlay, state.overlay),\n basePos: state.basePos, baseCur: null,\n overlayPos: state.overlayPos, overlayCur: null\n };\n },\n\n token: function(stream, state) {\n if (stream != state.streamSeen ||\n Math.min(state.basePos, state.overlayPos) < stream.start) {\n state.streamSeen = stream;\n state.basePos = state.overlayPos = stream.start;\n }\n\n if (stream.start == state.basePos) {\n state.baseCur = base.token(stream, state.base);\n state.basePos = stream.pos;\n }\n if (stream.start == state.overlayPos) {\n stream.pos = stream.start;\n state.overlayCur = overlay.token(stream, state.overlay);\n state.overlayPos = stream.pos;\n }\n stream.pos = Math.min(state.basePos, state.overlayPos);\n\n // state.overlay.combineTokens always takes precedence over combine,\n // unless set to null\n if (state.overlayCur == null) return state.baseCur;\n else if (state.baseCur != null &&\n state.overlay.combineTokens ||\n combine && state.overlay.combineTokens == null)\n return state.baseCur + \" \" + state.overlayCur;\n else return state.overlayCur;\n },\n\n indent: base.indent && function(state, textAfter, line) {\n return base.indent(state.base, textAfter, line);\n },\n electricChars: base.electricChars,\n\n innerMode: function(state) { return {state: state.base, mode: base}; },\n\n blankLine: function(state) {\n var baseToken, overlayToken;\n if (base.blankLine) baseToken = base.blankLine(state.base);\n if (overlay.blankLine) overlayToken = overlay.blankLine(state.overlay);\n\n return overlayToken == null ?\n baseToken :\n (combine && baseToken != null ? baseToken + \" \" + overlayToken : overlayToken);\n }\n };\n};\n\n});\n", "// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/5/LICENSE\n\n/**\n * Link to the project's GitHub page:\n * https://github.com/pickhardt/coffeescript-codemirror-mode\n */\n(function(mod) {\n if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n mod(require(\"../../lib/codemirror\"));\n else if (typeof define == \"function\" && define.amd) // AMD\n define([\"../../lib/codemirror\"], mod);\n else // Plain browser env\n mod(CodeMirror);\n})(function(CodeMirror) {\n\"use strict\";\n\nCodeMirror.defineMode(\"coffeescript\", function(conf, parserConf) {\n var ERRORCLASS = \"error\";\n\n function wordRegexp(words) {\n return new RegExp(\"^((\" + words.join(\")|(\") + \"))\\\\b\");\n }\n\n var operators = /^(?:->|=>|\\+[+=]?|-[\\-=]?|\\*[\\*=]?|\\/[\\/=]?|[=!]=|<[><]?=?|>>?=?|%=?|&=?|\\|=?|\\^=?|\\~|!|\\?|(or|and|\\|\\||&&|\\?)=)/;\n var delimiters = /^(?:[()\\[\\]{},:`=;]|\\.\\.?\\.?)/;\n var identifiers = /^[_A-Za-z$][_A-Za-z$0-9]*/;\n var atProp = /^@[_A-Za-z$][_A-Za-z$0-9]*/;\n\n var wordOperators = wordRegexp([\"and\", \"or\", \"not\",\n \"is\", \"isnt\", \"in\",\n \"instanceof\", \"typeof\"]);\n var indentKeywords = [\"for\", \"while\", \"loop\", \"if\", \"unless\", \"else\",\n \"switch\", \"try\", \"catch\", \"finally\", \"class\"];\n var commonKeywords = [\"break\", \"by\", \"continue\", \"debugger\", \"delete\",\n \"do\", \"in\", \"of\", \"new\", \"return\", \"then\",\n \"this\", \"@\", \"throw\", \"when\", \"until\", \"extends\"];\n\n var keywords = wordRegexp(indentKeywords.concat(commonKeywords));\n\n indentKeywords = wordRegexp(indentKeywords);\n\n\n var stringPrefixes = /^('{3}|\\\"{3}|['\\\"])/;\n var regexPrefixes = /^(\\/{3}|\\/)/;\n var commonConstants = [\"Infinity\", \"NaN\", \"undefined\", \"null\", \"true\", \"false\", \"on\", \"off\", \"yes\", \"no\"];\n var constants = wordRegexp(commonConstants);\n\n // Tokenizers\n function tokenBase(stream, state) {\n // Handle scope changes\n if (stream.sol()) {\n if (state.scope.align === null) state.scope.align = false;\n var scopeOffset = state.scope.offset;\n if (stream.eatSpace()) {\n var lineOffset = stream.indentation();\n if (lineOffset > scopeOffset && state.scope.type == \"coffee\") {\n return \"indent\";\n } else if (lineOffset < scopeOffset) {\n return \"dedent\";\n }\n return null;\n } else {\n if (scopeOffset > 0) {\n dedent(stream, state);\n }\n }\n }\n if (stream.eatSpace()) {\n return null;\n }\n\n var ch = stream.peek();\n\n // Handle docco title comment (single line)\n if (stream.match(\"####\")) {\n stream.skipToEnd();\n return \"comment\";\n }\n\n // Handle multi line comments\n if (stream.match(\"###\")) {\n state.tokenize = longComment;\n return state.tokenize(stream, state);\n }\n\n // Single line comment\n if (ch === \"#\") {\n stream.skipToEnd();\n return \"comment\";\n }\n\n // Handle number literals\n if (stream.match(/^-?[0-9\\.]/, false)) {\n var floatLiteral = false;\n // Floats\n if (stream.match(/^-?\\d*\\.\\d+(e[\\+\\-]?\\d+)?/i)) {\n floatLiteral = true;\n }\n if (stream.match(/^-?\\d+\\.\\d*/)) {\n floatLiteral = true;\n }\n if (stream.match(/^-?\\.\\d+/)) {\n floatLiteral = true;\n }\n\n if (floatLiteral) {\n // prevent from getting extra . on 1..\n if (stream.peek() == \".\"){\n stream.backUp(1);\n }\n return \"number\";\n }\n // Integers\n var intLiteral = false;\n // Hex\n if (stream.match(/^-?0x[0-9a-f]+/i)) {\n intLiteral = true;\n }\n // Decimal\n if (stream.match(/^-?[1-9]\\d*(e[\\+\\-]?\\d+)?/)) {\n intLiteral = true;\n }\n // Zero by itself with no other piece of number.\n if (stream.match(/^-?0(?![\\dx])/i)) {\n intLiteral = true;\n }\n if (intLiteral) {\n return \"number\";\n }\n }\n\n // Handle strings\n if (stream.match(stringPrefixes)) {\n state.tokenize = tokenFactory(stream.current(), false, \"string\");\n return state.tokenize(stream, state);\n }\n // Handle regex literals\n if (stream.match(regexPrefixes)) {\n if (stream.current() != \"/\" || stream.match(/^.*\\//, false)) { // prevent highlight of division\n state.tokenize = tokenFactory(stream.current(), true, \"string-2\");\n return state.tokenize(stream, state);\n } else {\n stream.backUp(1);\n }\n }\n\n\n\n // Handle operators and delimiters\n if (stream.match(operators) || stream.match(wordOperators)) {\n return \"operator\";\n }\n if (stream.match(delimiters)) {\n return \"punctuation\";\n }\n\n if (stream.match(constants)) {\n return \"atom\";\n }\n\n if (stream.match(atProp) || state.prop && stream.match(identifiers)) {\n return \"property\";\n }\n\n if (stream.match(keywords)) {\n return \"keyword\";\n }\n\n if (stream.match(identifiers)) {\n return \"variable\";\n }\n\n // Handle non-detected items\n stream.next();\n return ERRORCLASS;\n }\n\n function tokenFactory(delimiter, singleline, outclass) {\n return function(stream, state) {\n while (!stream.eol()) {\n stream.eatWhile(/[^'\"\\/\\\\]/);\n if (stream.eat(\"\\\\\")) {\n stream.next();\n if (singleline && stream.eol()) {\n return outclass;\n }\n } else if (stream.match(delimiter)) {\n state.tokenize = tokenBase;\n return outclass;\n } else {\n stream.eat(/['\"\\/]/);\n }\n }\n if (singleline) {\n if (parserConf.singleLineStringErrors) {\n outclass = ERRORCLASS;\n } else {\n state.tokenize = tokenBase;\n }\n }\n return outclass;\n };\n }\n\n function longComment(stream, state) {\n while (!stream.eol()) {\n stream.eatWhile(/[^#]/);\n if (stream.match(\"###\")) {\n state.tokenize = tokenBase;\n break;\n }\n stream.eatWhile(\"#\");\n }\n return \"comment\";\n }\n\n function indent(stream, state, type) {\n type = type || \"coffee\";\n var offset = 0, align = false, alignOffset = null;\n for (var scope = state.scope; scope; scope = scope.prev) {\n if (scope.type === \"coffee\" || scope.type == \"}\") {\n offset = scope.offset + conf.indentUnit;\n break;\n }\n }\n if (type !== \"coffee\") {\n align = null;\n alignOffset = stream.column() + stream.current().length;\n } else if (state.scope.align) {\n state.scope.align = false;\n }\n state.scope = {\n offset: offset,\n type: type,\n prev: state.scope,\n align: align,\n alignOffset: alignOffset\n };\n }\n\n function dedent(stream, state) {\n if (!state.scope.prev) return;\n if (state.scope.type === \"coffee\") {\n var _indent = stream.indentation();\n var matched = false;\n for (var scope = state.scope; scope; scope = scope.prev) {\n if (_indent === scope.offset) {\n matched = true;\n break;\n }\n }\n if (!matched) {\n return true;\n }\n while (state.scope.prev && state.scope.offset !== _indent) {\n state.scope = state.scope.prev;\n }\n return false;\n } else {\n state.scope = state.scope.prev;\n return false;\n }\n }\n\n function tokenLexer(stream, state) {\n var style = state.tokenize(stream, state);\n var current = stream.current();\n\n // Handle scope changes.\n if (current === \"return\") {\n state.dedent = true;\n }\n if (((current === \"->\" || current === \"=>\") && stream.eol())\n || style === \"indent\") {\n indent(stream, state);\n }\n var delimiter_index = \"[({\".indexOf(current);\n if (delimiter_index !== -1) {\n indent(stream, state, \"])}\".slice(delimiter_index, delimiter_index+1));\n }\n if (indentKeywords.exec(current)){\n indent(stream, state);\n }\n if (current == \"then\"){\n dedent(stream, state);\n }\n\n\n if (style === \"dedent\") {\n if (dedent(stream, state)) {\n return ERRORCLASS;\n }\n }\n delimiter_index = \"])}\".indexOf(current);\n if (delimiter_index !== -1) {\n while (state.scope.type == \"coffee\" && state.scope.prev)\n state.scope = state.scope.prev;\n if (state.scope.type == current)\n state.scope = state.scope.prev;\n }\n if (state.dedent && stream.eol()) {\n if (state.scope.type == \"coffee\" && state.scope.prev)\n state.scope = state.scope.prev;\n state.dedent = false;\n }\n\n return style;\n }\n\n var external = {\n startState: function(basecolumn) {\n return {\n tokenize: tokenBase,\n scope: {offset:basecolumn || 0, type:\"coffee\", prev: null, align: false},\n prop: false,\n dedent: 0\n };\n },\n\n token: function(stream, state) {\n var fillAlign = state.scope.align === null && state.scope;\n if (fillAlign && stream.sol()) fillAlign.align = false;\n\n var style = tokenLexer(stream, state);\n if (style && style != \"comment\") {\n if (fillAlign) fillAlign.align = true;\n state.prop = style == \"punctuation\" && stream.current() == \".\"\n }\n\n return style;\n },\n\n indent: function(state, text) {\n if (state.tokenize != tokenBase) return 0;\n var scope = state.scope;\n var closer = text && \"])}\".indexOf(text.charAt(0)) > -1;\n if (closer) while (scope.type == \"coffee\" && scope.prev) scope = scope.prev;\n var closes = closer && scope.type === text.charAt(0);\n if (scope.align)\n return scope.alignOffset - (closes ? 1 : 0);\n else\n return (closes ? scope.prev : scope).offset;\n },\n\n lineComment: \"#\",\n fold: \"indent\"\n };\n return external;\n});\n\n// IANA registered media type\n// https://www.iana.org/assignments/media-types/\nCodeMirror.defineMIME(\"application/vnd.coffeescript\", \"coffeescript\");\n\nCodeMirror.defineMIME(\"text/x-coffeescript\", \"coffeescript\");\nCodeMirror.defineMIME(\"text/coffeescript\", \"coffeescript\");\n\n});\n", "// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/5/LICENSE\n\n// Stylus mode created by Dmitry Kiselyov http://git.io/AaRB\n\n(function(mod) {\n if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n mod(require(\"../../lib/codemirror\"));\n else if (typeof define == \"function\" && define.amd) // AMD\n define([\"../../lib/codemirror\"], mod);\n else // Plain browser env\n mod(CodeMirror);\n})(function(CodeMirror) {\n \"use strict\";\n\n CodeMirror.defineMode(\"stylus\", function(config) {\n var indentUnit = config.indentUnit,\n indentUnitString = '',\n tagKeywords = keySet(tagKeywords_),\n tagVariablesRegexp = /^(a|b|i|s|col|em)$/i,\n propertyKeywords = keySet(propertyKeywords_),\n nonStandardPropertyKeywords = keySet(nonStandardPropertyKeywords_),\n valueKeywords = keySet(valueKeywords_),\n colorKeywords = keySet(colorKeywords_),\n documentTypes = keySet(documentTypes_),\n documentTypesRegexp = wordRegexp(documentTypes_),\n mediaFeatures = keySet(mediaFeatures_),\n mediaTypes = keySet(mediaTypes_),\n fontProperties = keySet(fontProperties_),\n operatorsRegexp = /^\\s*([.]{2,3}|&&|\\|\\||\\*\\*|[?!=:]?=|[-+*\\/%<>]=?|\\?:|\\~)/,\n wordOperatorKeywordsRegexp = wordRegexp(wordOperatorKeywords_),\n blockKeywords = keySet(blockKeywords_),\n vendorPrefixesRegexp = new RegExp(/^\\-(moz|ms|o|webkit)-/i),\n commonAtoms = keySet(commonAtoms_),\n firstWordMatch = \"\",\n states = {},\n ch,\n style,\n type,\n override;\n\n while (indentUnitString.length < indentUnit) indentUnitString += ' ';\n\n /**\n * Tokenizers\n */\n function tokenBase(stream, state) {\n firstWordMatch = stream.string.match(/(^[\\w-]+\\s*=\\s*$)|(^\\s*[\\w-]+\\s*=\\s*[\\w-])|(^\\s*(\\.|#|@|\\$|\\&|\\[|\\d|\\+|::?|\\{|\\>|~|\\/)?\\s*[\\w-]*([a-z0-9-]|\\*|\\/\\*)(\\(|,)?)/);\n state.context.line.firstWord = firstWordMatch ? firstWordMatch[0].replace(/^\\s*/, \"\") : \"\";\n state.context.line.indent = stream.indentation();\n ch = stream.peek();\n\n // Line comment\n if (stream.match(\"//\")) {\n stream.skipToEnd();\n return [\"comment\", \"comment\"];\n }\n // Block comment\n if (stream.match(\"/*\")) {\n state.tokenize = tokenCComment;\n return tokenCComment(stream, state);\n }\n // String\n if (ch == \"\\\"\" || ch == \"'\") {\n stream.next();\n state.tokenize = tokenString(ch);\n return state.tokenize(stream, state);\n }\n // Def\n if (ch == \"@\") {\n stream.next();\n stream.eatWhile(/[\\w\\\\-]/);\n return [\"def\", stream.current()];\n }\n // ID selector or Hex color\n if (ch == \"#\") {\n stream.next();\n // Hex color\n if (stream.match(/^[0-9a-f]{3}([0-9a-f]([0-9a-f]{2}){0,2})?\\b(?!-)/i)) {\n return [\"atom\", \"atom\"];\n }\n // ID selector\n if (stream.match(/^[a-z][\\w-]*/i)) {\n return [\"builtin\", \"hash\"];\n }\n }\n // Vendor prefixes\n if (stream.match(vendorPrefixesRegexp)) {\n return [\"meta\", \"vendor-prefixes\"];\n }\n // Numbers\n if (stream.match(/^-?[0-9]?\\.?[0-9]/)) {\n stream.eatWhile(/[a-z%]/i);\n return [\"number\", \"unit\"];\n }\n // !important|optional\n if (ch == \"!\") {\n stream.next();\n return [stream.match(/^(important|optional)/i) ? \"keyword\": \"operator\", \"important\"];\n }\n // Class\n if (ch == \".\" && stream.match(/^\\.[a-z][\\w-]*/i)) {\n return [\"qualifier\", \"qualifier\"];\n }\n // url url-prefix domain regexp\n if (stream.match(documentTypesRegexp)) {\n if (stream.peek() == \"(\") state.tokenize = tokenParenthesized;\n return [\"property\", \"word\"];\n }\n // Mixins / Functions\n if (stream.match(/^[a-z][\\w-]*\\(/i)) {\n stream.backUp(1);\n return [\"keyword\", \"mixin\"];\n }\n // Block mixins\n if (stream.match(/^(\\+|-)[a-z][\\w-]*\\(/i)) {\n stream.backUp(1);\n return [\"keyword\", \"block-mixin\"];\n }\n // Parent Reference BEM naming\n if (stream.string.match(/^\\s*&/) && stream.match(/^[-_]+[a-z][\\w-]*/)) {\n return [\"qualifier\", \"qualifier\"];\n }\n // / Root Reference & Parent Reference\n if (stream.match(/^(\\/|&)(-|_|:|\\.|#|[a-z])/)) {\n stream.backUp(1);\n return [\"variable-3\", \"reference\"];\n }\n if (stream.match(/^&{1}\\s*$/)) {\n return [\"variable-3\", \"reference\"];\n }\n // Word operator\n if (stream.match(wordOperatorKeywordsRegexp)) {\n return [\"operator\", \"operator\"];\n }\n // Word\n if (stream.match(/^\\$?[-_]*[a-z0-9]+[\\w-]*/i)) {\n // Variable\n if (stream.match(/^(\\.|\\[)[\\w-\\'\\\"\\]]+/i, false)) {\n if (!wordIsTag(stream.current())) {\n stream.match('.');\n return [\"variable-2\", \"variable-name\"];\n }\n }\n return [\"variable-2\", \"word\"];\n }\n // Operators\n if (stream.match(operatorsRegexp)) {\n return [\"operator\", stream.current()];\n }\n // Delimiters\n if (/[:;,{}\\[\\]\\(\\)]/.test(ch)) {\n stream.next();\n return [null, ch];\n }\n // Non-detected items\n stream.next();\n return [null, null];\n }\n\n /**\n * Token comment\n */\n function tokenCComment(stream, state) {\n var maybeEnd = false, ch;\n while ((ch = stream.next()) != null) {\n if (maybeEnd && ch == \"/\") {\n state.tokenize = null;\n break;\n }\n maybeEnd = (ch == \"*\");\n }\n return [\"comment\", \"comment\"];\n }\n\n /**\n * Token string\n */\n function tokenString(quote) {\n return function(stream, state) {\n var escaped = false, ch;\n while ((ch = stream.next()) != null) {\n if (ch == quote && !escaped) {\n if (quote == \")\") stream.backUp(1);\n break;\n }\n escaped = !escaped && ch == \"\\\\\";\n }\n if (ch == quote || !escaped && quote != \")\") state.tokenize = null;\n return [\"string\", \"string\"];\n };\n }\n\n /**\n * Token parenthesized\n */\n function tokenParenthesized(stream, state) {\n stream.next(); // Must be \"(\"\n if (!stream.match(/\\s*[\\\"\\')]/, false))\n state.tokenize = tokenString(\")\");\n else\n state.tokenize = null;\n return [null, \"(\"];\n }\n\n /**\n * Context management\n */\n function Context(type, indent, prev, line) {\n this.type = type;\n this.indent = indent;\n this.prev = prev;\n this.line = line || {firstWord: \"\", indent: 0};\n }\n\n function pushContext(state, stream, type, indent) {\n indent = indent >= 0 ? indent : indentUnit;\n state.context = new Context(type, stream.indentation() + indent, state.context);\n return type;\n }\n\n function popContext(state, currentIndent) {\n var contextIndent = state.context.indent - indentUnit;\n currentIndent = currentIndent || false;\n state.context = state.context.prev;\n if (currentIndent) state.context.indent = contextIndent;\n return state.context.type;\n }\n\n function pass(type, stream, state) {\n return states[state.context.type](type, stream, state);\n }\n\n function popAndPass(type, stream, state, n) {\n for (var i = n || 1; i > 0; i--)\n state.context = state.context.prev;\n return pass(type, stream, state);\n }\n\n\n /**\n * Parser\n */\n function wordIsTag(word) {\n return word.toLowerCase() in tagKeywords;\n }\n\n function wordIsProperty(word) {\n word = word.toLowerCase();\n return word in propertyKeywords || word in fontProperties;\n }\n\n function wordIsBlock(word) {\n return word.toLowerCase() in blockKeywords;\n }\n\n function wordIsVendorPrefix(word) {\n return word.toLowerCase().match(vendorPrefixesRegexp);\n }\n\n function wordAsValue(word) {\n var wordLC = word.toLowerCase();\n var override = \"variable-2\";\n if (wordIsTag(word)) override = \"tag\";\n else if (wordIsBlock(word)) override = \"block-keyword\";\n else if (wordIsProperty(word)) override = \"property\";\n else if (wordLC in valueKeywords || wordLC in commonAtoms) override = \"atom\";\n else if (wordLC == \"return\" || wordLC in colorKeywords) override = \"keyword\";\n\n // Font family\n else if (word.match(/^[A-Z]/)) override = \"string\";\n return override;\n }\n\n function typeIsBlock(type, stream) {\n return ((endOfLine(stream) && (type == \"{\" || type == \"]\" || type == \"hash\" || type == \"qualifier\")) || type == \"block-mixin\");\n }\n\n function typeIsInterpolation(type, stream) {\n return type == \"{\" && stream.match(/^\\s*\\$?[\\w-]+/i, false);\n }\n\n function typeIsPseudo(type, stream) {\n return type == \":\" && stream.match(/^[a-z-]+/, false);\n }\n\n function startOfLine(stream) {\n return stream.sol() || stream.string.match(new RegExp(\"^\\\\s*\" + escapeRegExp(stream.current())));\n }\n\n function endOfLine(stream) {\n return stream.eol() || stream.match(/^\\s*$/, false);\n }\n\n function firstWordOfLine(line) {\n var re = /^\\s*[-_]*[a-z0-9]+[\\w-]*/i;\n var result = typeof line == \"string\" ? line.match(re) : line.string.match(re);\n return result ? result[0].replace(/^\\s*/, \"\") : \"\";\n }\n\n\n /**\n * Block\n */\n states.block = function(type, stream, state) {\n if ((type == \"comment\" && startOfLine(stream)) ||\n (type == \",\" && endOfLine(stream)) ||\n type == \"mixin\") {\n return pushContext(state, stream, \"block\", 0);\n }\n if (typeIsInterpolation(type, stream)) {\n return pushContext(state, stream, \"interpolation\");\n }\n if (endOfLine(stream) && type == \"]\") {\n if (!/^\\s*(\\.|#|:|\\[|\\*|&)/.test(stream.string) && !wordIsTag(firstWordOfLine(stream))) {\n return pushContext(state, stream, \"block\", 0);\n }\n }\n if (typeIsBlock(type, stream)) {\n return pushContext(state, stream, \"block\");\n }\n if (type == \"}\" && endOfLine(stream)) {\n return pushContext(state, stream, \"block\", 0);\n }\n if (type == \"variable-name\") {\n if (stream.string.match(/^\\s?\\$[\\w-\\.\\[\\]\\'\\\"]+$/) || wordIsBlock(firstWordOfLine(stream))) {\n return pushContext(state, stream, \"variableName\");\n }\n else {\n return pushContext(state, stream, \"variableName\", 0);\n }\n }\n if (type == \"=\") {\n if (!endOfLine(stream) && !wordIsBlock(firstWordOfLine(stream))) {\n return pushContext(state, stream, \"block\", 0);\n }\n return pushContext(state, stream, \"block\");\n }\n if (type == \"*\") {\n if (endOfLine(stream) || stream.match(/\\s*(,|\\.|#|\\[|:|{)/,false)) {\n override = \"tag\";\n return pushContext(state, stream, \"block\");\n }\n }\n if (typeIsPseudo(type, stream)) {\n return pushContext(state, stream, \"pseudo\");\n }\n if (/@(font-face|media|supports|(-moz-)?document)/.test(type)) {\n return pushContext(state, stream, endOfLine(stream) ? \"block\" : \"atBlock\");\n }\n if (/@(-(moz|ms|o|webkit)-)?keyframes$/.test(type)) {\n return pushContext(state, stream, \"keyframes\");\n }\n if (/@extends?/.test(type)) {\n return pushContext(state, stream, \"extend\", 0);\n }\n if (type && type.charAt(0) == \"@\") {\n\n // Property Lookup\n if (stream.indentation() > 0 && wordIsProperty(stream.current().slice(1))) {\n override = \"variable-2\";\n return \"block\";\n }\n if (/(@import|@require|@charset)/.test(type)) {\n return pushContext(state, stream, \"block\", 0);\n }\n return pushContext(state, stream, \"block\");\n }\n if (type == \"reference\" && endOfLine(stream)) {\n return pushContext(state, stream, \"block\");\n }\n if (type == \"(\") {\n return pushContext(state, stream, \"parens\");\n }\n\n if (type == \"vendor-prefixes\") {\n return pushContext(state, stream, \"vendorPrefixes\");\n }\n if (type == \"word\") {\n var word = stream.current();\n override = wordAsValue(word);\n\n if (override == \"property\") {\n if (startOfLine(stream)) {\n return pushContext(state, stream, \"block\", 0);\n } else {\n override = \"atom\";\n return \"block\";\n }\n }\n\n if (override == \"tag\") {\n\n // tag is a css value\n if (/embed|menu|pre|progress|sub|table/.test(word)) {\n if (wordIsProperty(firstWordOfLine(stream))) {\n override = \"atom\";\n return \"block\";\n }\n }\n\n // tag is an attribute\n if (stream.string.match(new RegExp(\"\\\\[\\\\s*\" + word + \"|\" + word +\"\\\\s*\\\\]\"))) {\n override = \"atom\";\n return \"block\";\n }\n\n // tag is a variable\n if (tagVariablesRegexp.test(word)) {\n if ((startOfLine(stream) && stream.string.match(/=/)) ||\n (!startOfLine(stream) &&\n !stream.string.match(/^(\\s*\\.|#|\\&|\\[|\\/|>|\\*)/) &&\n !wordIsTag(firstWordOfLine(stream)))) {\n override = \"variable-2\";\n if (wordIsBlock(firstWordOfLine(stream))) return \"block\";\n return pushContext(state, stream, \"block\", 0);\n }\n }\n\n if (endOfLine(stream)) return pushContext(state, stream, \"block\");\n }\n if (override == \"block-keyword\") {\n override = \"keyword\";\n\n // Postfix conditionals\n if (stream.current(/(if|unless)/) && !startOfLine(stream)) {\n return \"block\";\n }\n return pushContext(state, stream, \"block\");\n }\n if (word == \"return\") return pushContext(state, stream, \"block\", 0);\n\n // Placeholder selector\n if (override == \"variable-2\" && stream.string.match(/^\\s?\\$[\\w-\\.\\[\\]\\'\\\"]+$/)) {\n return pushContext(state, stream, \"block\");\n }\n }\n return state.context.type;\n };\n\n\n /**\n * Parens\n */\n states.parens = function(type, stream, state) {\n if (type == \"(\") return pushContext(state, stream, \"parens\");\n if (type == \")\") {\n if (state.context.prev.type == \"parens\") {\n return popContext(state);\n }\n if ((stream.string.match(/^[a-z][\\w-]*\\(/i) && endOfLine(stream)) ||\n wordIsBlock(firstWordOfLine(stream)) ||\n /(\\.|#|:|\\[|\\*|&|>|~|\\+|\\/)/.test(firstWordOfLine(stream)) ||\n (!stream.string.match(/^-?[a-z][\\w-\\.\\[\\]\\'\\\"]*\\s*=/) &&\n wordIsTag(firstWordOfLine(stream)))) {\n return pushContext(state, stream, \"block\");\n }\n if (stream.string.match(/^[\\$-]?[a-z][\\w-\\.\\[\\]\\'\\\"]*\\s*=/) ||\n stream.string.match(/^\\s*(\\(|\\)|[0-9])/) ||\n stream.string.match(/^\\s+[a-z][\\w-]*\\(/i) ||\n stream.string.match(/^\\s+[\\$-]?[a-z]/i)) {\n return pushContext(state, stream, \"block\", 0);\n }\n if (endOfLine(stream)) return pushContext(state, stream, \"block\");\n else return pushContext(state, stream, \"block\", 0);\n }\n if (type && type.charAt(0) == \"@\" && wordIsProperty(stream.current().slice(1))) {\n override = \"variable-2\";\n }\n if (type == \"word\") {\n var word = stream.current();\n override = wordAsValue(word);\n if (override == \"tag\" && tagVariablesRegexp.test(word)) {\n override = \"variable-2\";\n }\n if (override == \"property\" || word == \"to\") override = \"atom\";\n }\n if (type == \"variable-name\") {\n return pushContext(state, stream, \"variableName\");\n }\n if (typeIsPseudo(type, stream)) {\n return pushContext(state, stream, \"pseudo\");\n }\n return state.context.type;\n };\n\n\n /**\n * Vendor prefixes\n */\n states.vendorPrefixes = function(type, stream, state) {\n if (type == \"word\") {\n override = \"property\";\n return pushContext(state, stream, \"block\", 0);\n }\n return popContext(state);\n };\n\n\n /**\n * Pseudo\n */\n states.pseudo = function(type, stream, state) {\n if (!wordIsProperty(firstWordOfLine(stream.string))) {\n stream.match(/^[a-z-]+/);\n override = \"variable-3\";\n if (endOfLine(stream)) return pushContext(state, stream, \"block\");\n return popContext(state);\n }\n return popAndPass(type, stream, state);\n };\n\n\n /**\n * atBlock\n */\n states.atBlock = function(type, stream, state) {\n if (type == \"(\") return pushContext(state, stream, \"atBlock_parens\");\n if (typeIsBlock(type, stream)) {\n return pushContext(state, stream, \"block\");\n }\n if (typeIsInterpolation(type, stream)) {\n return pushContext(state, stream, \"interpolation\");\n }\n if (type == \"word\") {\n var word = stream.current().toLowerCase();\n if (/^(only|not|and|or)$/.test(word))\n override = \"keyword\";\n else if (documentTypes.hasOwnProperty(word))\n override = \"tag\";\n else if (mediaTypes.hasOwnProperty(word))\n override = \"attribute\";\n else if (mediaFeatures.hasOwnProperty(word))\n override = \"property\";\n else if (nonStandardPropertyKeywords.hasOwnProperty(word))\n override = \"string-2\";\n else override = wordAsValue(stream.current());\n if (override == \"tag\" && endOfLine(stream)) {\n return pushContext(state, stream, \"block\");\n }\n }\n if (type == \"operator\" && /^(not|and|or)$/.test(stream.current())) {\n override = \"keyword\";\n }\n return state.context.type;\n };\n\n states.atBlock_parens = function(type, stream, state) {\n if (type == \"{\" || type == \"}\") return state.context.type;\n if (type == \")\") {\n if (endOfLine(stream)) return pushContext(state, stream, \"block\");\n else return pushContext(state, stream, \"atBlock\");\n }\n if (type == \"word\") {\n var word = stream.current().toLowerCase();\n override = wordAsValue(word);\n if (/^(max|min)/.test(word)) override = \"property\";\n if (override == \"tag\") {\n tagVariablesRegexp.test(word) ? override = \"variable-2\" : override = \"atom\";\n }\n return state.context.type;\n }\n return states.atBlock(type, stream, state);\n };\n\n\n /**\n * Keyframes\n */\n states.keyframes = function(type, stream, state) {\n if (stream.indentation() == \"0\" && ((type == \"}\" && startOfLine(stream)) || type == \"]\" || type == \"hash\"\n || type == \"qualifier\" || wordIsTag(stream.current()))) {\n return popAndPass(type, stream, state);\n }\n if (type == \"{\") return pushContext(state, stream, \"keyframes\");\n if (type == \"}\") {\n if (startOfLine(stream)) return popContext(state, true);\n else return pushContext(state, stream, \"keyframes\");\n }\n if (type == \"unit\" && /^[0-9]+\\%$/.test(stream.current())) {\n return pushContext(state, stream, \"keyframes\");\n }\n if (type == \"word\") {\n override = wordAsValue(stream.current());\n if (override == \"block-keyword\") {\n override = \"keyword\";\n return pushContext(state, stream, \"keyframes\");\n }\n }\n if (/@(font-face|media|supports|(-moz-)?document)/.test(type)) {\n return pushContext(state, stream, endOfLine(stream) ? \"block\" : \"atBlock\");\n }\n if (type == \"mixin\") {\n return pushContext(state, stream, \"block\", 0);\n }\n return state.context.type;\n };\n\n\n /**\n * Interpolation\n */\n states.interpolation = function(type, stream, state) {\n if (type == \"{\") popContext(state) && pushContext(state, stream, \"block\");\n if (type == \"}\") {\n if (stream.string.match(/^\\s*(\\.|#|:|\\[|\\*|&|>|~|\\+|\\/)/i) ||\n (stream.string.match(/^\\s*[a-z]/i) && wordIsTag(firstWordOfLine(stream)))) {\n return pushContext(state, stream, \"block\");\n }\n if (!stream.string.match(/^(\\{|\\s*\\&)/) ||\n stream.match(/\\s*[\\w-]/,false)) {\n return pushContext(state, stream, \"block\", 0);\n }\n return pushContext(state, stream, \"block\");\n }\n if (type == \"variable-name\") {\n return pushContext(state, stream, \"variableName\", 0);\n }\n if (type == \"word\") {\n override = wordAsValue(stream.current());\n if (override == \"tag\") override = \"atom\";\n }\n return state.context.type;\n };\n\n\n /**\n * Extend/s\n */\n states.extend = function(type, stream, state) {\n if (type == \"[\" || type == \"=\") return \"extend\";\n if (type == \"]\") return popContext(state);\n if (type == \"word\") {\n override = wordAsValue(stream.current());\n return \"extend\";\n }\n return popContext(state);\n };\n\n\n /**\n * Variable name\n */\n states.variableName = function(type, stream, state) {\n if (type == \"string\" || type == \"[\" || type == \"]\" || stream.current().match(/^(\\.|\\$)/)) {\n if (stream.current().match(/^\\.[\\w-]+/i)) override = \"variable-2\";\n return \"variableName\";\n }\n return popAndPass(type, stream, state);\n };\n\n\n return {\n startState: function(base) {\n return {\n tokenize: null,\n state: \"block\",\n context: new Context(\"block\", base || 0, null)\n };\n },\n token: function(stream, state) {\n if (!state.tokenize && stream.eatSpace()) return null;\n style = (state.tokenize || tokenBase)(stream, state);\n if (style && typeof style == \"object\") {\n type = style[1];\n style = style[0];\n }\n override = style;\n state.state = states[state.state](type, stream, state);\n return override;\n },\n indent: function(state, textAfter, line) {\n\n var cx = state.context,\n ch = textAfter && textAfter.charAt(0),\n indent = cx.indent,\n lineFirstWord = firstWordOfLine(textAfter),\n lineIndent = line.match(/^\\s*/)[0].replace(/\\t/g, indentUnitString).length,\n prevLineFirstWord = state.context.prev ? state.context.prev.line.firstWord : \"\",\n prevLineIndent = state.context.prev ? state.context.prev.line.indent : lineIndent;\n\n if (cx.prev &&\n (ch == \"}\" && (cx.type == \"block\" || cx.type == \"atBlock\" || cx.type == \"keyframes\") ||\n ch == \")\" && (cx.type == \"parens\" || cx.type == \"atBlock_parens\") ||\n ch == \"{\" && (cx.type == \"at\"))) {\n indent = cx.indent - indentUnit;\n } else if (!(/(\\})/.test(ch))) {\n if (/@|\\$|\\d/.test(ch) ||\n /^\\{/.test(textAfter) ||\n/^\\s*\\/(\\/|\\*)/.test(textAfter) ||\n /^\\s*\\/\\*/.test(prevLineFirstWord) ||\n /^\\s*[\\w-\\.\\[\\]\\'\\\"]+\\s*(\\?|:|\\+)?=/i.test(textAfter) ||\n/^(\\+|-)?[a-z][\\w-]*\\(/i.test(textAfter) ||\n/^return/.test(textAfter) ||\n wordIsBlock(lineFirstWord)) {\n indent = lineIndent;\n } else if (/(\\.|#|:|\\[|\\*|&|>|~|\\+|\\/)/.test(ch) || wordIsTag(lineFirstWord)) {\n if (/\\,\\s*$/.test(prevLineFirstWord)) {\n indent = prevLineIndent;\n } else if (/^\\s+/.test(line) && (/(\\.|#|:|\\[|\\*|&|>|~|\\+|\\/)/.test(prevLineFirstWord) || wordIsTag(prevLineFirstWord))) {\n indent = lineIndent <= prevLineIndent ? prevLineIndent : prevLineIndent + indentUnit;\n } else {\n indent = lineIndent;\n }\n } else if (!/,\\s*$/.test(line) && (wordIsVendorPrefix(lineFirstWord) || wordIsProperty(lineFirstWord))) {\n if (wordIsBlock(prevLineFirstWord)) {\n indent = lineIndent <= prevLineIndent ? prevLineIndent : prevLineIndent + indentUnit;\n } else if (/^\\{/.test(prevLineFirstWord)) {\n indent = lineIndent <= prevLineIndent ? lineIndent : prevLineIndent + indentUnit;\n } else if (wordIsVendorPrefix(prevLineFirstWord) || wordIsProperty(prevLineFirstWord)) {\n indent = lineIndent >= prevLineIndent ? prevLineIndent : lineIndent;\n } else if (/^(\\.|#|:|\\[|\\*|&|@|\\+|\\-|>|~|\\/)/.test(prevLineFirstWord) ||\n /=\\s*$/.test(prevLineFirstWord) ||\n wordIsTag(prevLineFirstWord) ||\n /^\\$[\\w-\\.\\[\\]\\'\\\"]/.test(prevLineFirstWord)) {\n indent = prevLineIndent + indentUnit;\n } else {\n indent = lineIndent;\n }\n }\n }\n return indent;\n },\n electricChars: \"}\",\n blockCommentStart: \"/*\",\n blockCommentEnd: \"*/\",\n blockCommentContinue: \" * \",\n lineComment: \"//\",\n fold: \"indent\"\n };\n });\n\n // developer.mozilla.org/en-US/docs/Web/HTML/Element\n var tagKeywords_ = [\"a\",\"abbr\",\"address\",\"area\",\"article\",\"aside\",\"audio\", \"b\", \"base\",\"bdi\", \"bdo\",\"bgsound\",\"blockquote\",\"body\",\"br\",\"button\",\"canvas\",\"caption\",\"cite\", \"code\",\"col\",\"colgroup\",\"data\",\"datalist\",\"dd\",\"del\",\"details\",\"dfn\",\"div\", \"dl\",\"dt\",\"em\",\"embed\",\"fieldset\",\"figcaption\",\"figure\",\"footer\",\"form\",\"h1\", \"h2\",\"h3\",\"h4\",\"h5\",\"h6\",\"head\",\"header\",\"hgroup\",\"hr\",\"html\",\"i\",\"iframe\", \"img\",\"input\",\"ins\",\"kbd\",\"keygen\",\"label\",\"legend\",\"li\",\"link\",\"main\",\"map\", \"mark\",\"marquee\",\"menu\",\"menuitem\",\"meta\",\"meter\",\"nav\",\"nobr\",\"noframes\", \"noscript\",\"object\",\"ol\",\"optgroup\",\"option\",\"output\",\"p\",\"param\",\"pre\", \"progress\",\"q\",\"rp\",\"rt\",\"ruby\",\"s\",\"samp\",\"script\",\"section\",\"select\", \"small\",\"source\",\"span\",\"strong\",\"style\",\"sub\",\"summary\",\"sup\",\"table\",\"tbody\",\"td\",\"textarea\",\"tfoot\",\"th\",\"thead\",\"time\",\"tr\",\"track\", \"u\",\"ul\",\"var\",\"video\"];\n\n // github.com/codemirror/CodeMirror/blob/master/mode/css/css.js\n // Note, \"url-prefix\" should precede \"url\" in order to match correctly in documentTypesRegexp\n var documentTypes_ = [\"domain\", \"regexp\", \"url-prefix\", \"url\"];\n var mediaTypes_ = [\"all\",\"aural\",\"braille\",\"handheld\",\"print\",\"projection\",\"screen\",\"tty\",\"tv\",\"embossed\"];\n var mediaFeatures_ = [\"width\",\"min-width\",\"max-width\",\"height\",\"min-height\",\"max-height\",\"device-width\",\"min-device-width\",\"max-device-width\",\"device-height\",\"min-device-height\",\"max-device-height\",\"aspect-ratio\",\"min-aspect-ratio\",\"max-aspect-ratio\",\"device-aspect-ratio\",\"min-device-aspect-ratio\",\"max-device-aspect-ratio\",\"color\",\"min-color\",\"max-color\",\"color-index\",\"min-color-index\",\"max-color-index\",\"monochrome\",\"min-monochrome\",\"max-monochrome\",\"resolution\",\"min-resolution\",\"max-resolution\",\"scan\",\"grid\",\"dynamic-range\",\"video-dynamic-range\"];\n var propertyKeywords_ = [\"align-content\",\"align-items\",\"align-self\",\"alignment-adjust\",\"alignment-baseline\",\"anchor-point\",\"animation\",\"animation-delay\",\"animation-direction\",\"animation-duration\",\"animation-fill-mode\",\"animation-iteration-count\",\"animation-name\",\"animation-play-state\",\"animation-timing-function\",\"appearance\",\"azimuth\",\"backface-visibility\",\"background\",\"background-attachment\",\"background-clip\",\"background-color\",\"background-image\",\"background-origin\",\"background-position\",\"background-repeat\",\"background-size\",\"baseline-shift\",\"binding\",\"bleed\",\"bookmark-label\",\"bookmark-level\",\"bookmark-state\",\"bookmark-target\",\"border\",\"border-bottom\",\"border-bottom-color\",\"border-bottom-left-radius\",\"border-bottom-right-radius\",\"border-bottom-style\",\"border-bottom-width\",\"border-collapse\",\"border-color\",\"border-image\",\"border-image-outset\",\"border-image-repeat\",\"border-image-slice\",\"border-image-source\",\"border-image-width\",\"border-left\",\"border-left-color\",\"border-left-style\",\"border-left-width\",\"border-radius\",\"border-right\",\"border-right-color\",\"border-right-style\",\"border-right-width\",\"border-spacing\",\"border-style\",\"border-top\",\"border-top-color\",\"border-top-left-radius\",\"border-top-right-radius\",\"border-top-style\",\"border-top-width\",\"border-width\",\"bottom\",\"box-decoration-break\",\"box-shadow\",\"box-sizing\",\"break-after\",\"break-before\",\"break-inside\",\"caption-side\",\"clear\",\"clip\",\"color\",\"color-profile\",\"column-count\",\"column-fill\",\"column-gap\",\"column-rule\",\"column-rule-color\",\"column-rule-style\",\"column-rule-width\",\"column-span\",\"column-width\",\"columns\",\"content\",\"counter-increment\",\"counter-reset\",\"crop\",\"cue\",\"cue-after\",\"cue-before\",\"cursor\",\"direction\",\"display\",\"dominant-baseline\",\"drop-initial-after-adjust\",\"drop-initial-after-align\",\"drop-initial-before-adjust\",\"drop-initial-before-align\",\"drop-initial-size\",\"drop-initial-value\",\"elevation\",\"empty-cells\",\"fit\",\"fit-position\",\"flex\",\"flex-basis\",\"flex-direction\",\"flex-flow\",\"flex-grow\",\"flex-shrink\",\"flex-wrap\",\"float\",\"float-offset\",\"flow-from\",\"flow-into\",\"font\",\"font-feature-settings\",\"font-family\",\"font-kerning\",\"font-language-override\",\"font-size\",\"font-size-adjust\",\"font-stretch\",\"font-style\",\"font-synthesis\",\"font-variant\",\"font-variant-alternates\",\"font-variant-caps\",\"font-variant-east-asian\",\"font-variant-ligatures\",\"font-variant-numeric\",\"font-variant-position\",\"font-weight\",\"grid\",\"grid-area\",\"grid-auto-columns\",\"grid-auto-flow\",\"grid-auto-position\",\"grid-auto-rows\",\"grid-column\",\"grid-column-end\",\"grid-column-start\",\"grid-row\",\"grid-row-end\",\"grid-row-start\",\"grid-template\",\"grid-template-areas\",\"grid-template-columns\",\"grid-template-rows\",\"hanging-punctuation\",\"height\",\"hyphens\",\"icon\",\"image-orientation\",\"image-rendering\",\"image-resolution\",\"inline-box-align\",\"justify-content\",\"left\",\"letter-spacing\",\"line-break\",\"line-height\",\"line-stacking\",\"line-stacking-ruby\",\"line-stacking-shift\",\"line-stacking-strategy\",\"list-style\",\"list-style-image\",\"list-style-position\",\"list-style-type\",\"margin\",\"margin-bottom\",\"margin-left\",\"margin-right\",\"margin-top\",\"marker-offset\",\"marks\",\"marquee-direction\",\"marquee-loop\",\"marquee-play-count\",\"marquee-speed\",\"marquee-style\",\"max-height\",\"max-width\",\"min-height\",\"min-width\",\"move-to\",\"nav-down\",\"nav-index\",\"nav-left\",\"nav-right\",\"nav-up\",\"object-fit\",\"object-position\",\"opacity\",\"order\",\"orphans\",\"outline\",\"outline-color\",\"outline-offset\",\"outline-style\",\"outline-width\",\"overflow\",\"overflow-style\",\"overflow-wrap\",\"overflow-x\",\"overflow-y\",\"padding\",\"padding-bottom\",\"padding-left\",\"padding-right\",\"padding-top\",\"page\",\"page-break-after\",\"page-break-before\",\"page-break-inside\",\"page-policy\",\"pause\",\"pause-after\",\"pause-before\",\"perspective\",\"perspective-origin\",\"pitch\",\"pitch-range\",\"play-during\",\"position\",\"presentation-level\",\"punctuation-trim\",\"quotes\",\"region-break-after\",\"region-break-before\",\"region-break-inside\",\"region-fragment\",\"rendering-intent\",\"resize\",\"rest\",\"rest-after\",\"rest-before\",\"richness\",\"right\",\"rotation\",\"rotation-point\",\"ruby-align\",\"ruby-overhang\",\"ruby-position\",\"ruby-span\",\"shape-image-threshold\",\"shape-inside\",\"shape-margin\",\"shape-outside\",\"size\",\"speak\",\"speak-as\",\"speak-header\",\"speak-numeral\",\"speak-punctuation\",\"speech-rate\",\"stress\",\"string-set\",\"tab-size\",\"table-layout\",\"target\",\"target-name\",\"target-new\",\"target-position\",\"text-align\",\"text-align-last\",\"text-decoration\",\"text-decoration-color\",\"text-decoration-line\",\"text-decoration-skip\",\"text-decoration-style\",\"text-emphasis\",\"text-emphasis-color\",\"text-emphasis-position\",\"text-emphasis-style\",\"text-height\",\"text-indent\",\"text-justify\",\"text-outline\",\"text-overflow\",\"text-shadow\",\"text-size-adjust\",\"text-space-collapse\",\"text-transform\",\"text-underline-position\",\"text-wrap\",\"top\",\"transform\",\"transform-origin\",\"transform-style\",\"transition\",\"transition-delay\",\"transition-duration\",\"transition-property\",\"transition-timing-function\",\"unicode-bidi\",\"vertical-align\",\"visibility\",\"voice-balance\",\"voice-duration\",\"voice-family\",\"voice-pitch\",\"voice-range\",\"voice-rate\",\"voice-stress\",\"voice-volume\",\"volume\",\"white-space\",\"widows\",\"width\",\"will-change\",\"word-break\",\"word-spacing\",\"word-wrap\",\"z-index\",\"clip-path\",\"clip-rule\",\"mask\",\"enable-background\",\"filter\",\"flood-color\",\"flood-opacity\",\"lighting-color\",\"stop-color\",\"stop-opacity\",\"pointer-events\",\"color-interpolation\",\"color-interpolation-filters\",\"color-rendering\",\"fill\",\"fill-opacity\",\"fill-rule\",\"image-rendering\",\"marker\",\"marker-end\",\"marker-mid\",\"marker-start\",\"shape-rendering\",\"stroke\",\"stroke-dasharray\",\"stroke-dashoffset\",\"stroke-linecap\",\"stroke-linejoin\",\"stroke-miterlimit\",\"stroke-opacity\",\"stroke-width\",\"text-rendering\",\"baseline-shift\",\"dominant-baseline\",\"glyph-orientation-horizontal\",\"glyph-orientation-vertical\",\"text-anchor\",\"writing-mode\",\"font-smoothing\",\"osx-font-smoothing\"];\n var nonStandardPropertyKeywords_ = [\"scrollbar-arrow-color\",\"scrollbar-base-color\",\"scrollbar-dark-shadow-color\",\"scrollbar-face-color\",\"scrollbar-highlight-color\",\"scrollbar-shadow-color\",\"scrollbar-3d-light-color\",\"scrollbar-track-color\",\"shape-inside\",\"searchfield-cancel-button\",\"searchfield-decoration\",\"searchfield-results-button\",\"searchfield-results-decoration\",\"zoom\"];\n var fontProperties_ = [\"font-family\",\"src\",\"unicode-range\",\"font-variant\",\"font-feature-settings\",\"font-stretch\",\"font-weight\",\"font-style\"];\n var colorKeywords_ = [\"aliceblue\",\"antiquewhite\",\"aqua\",\"aquamarine\",\"azure\",\"beige\",\"bisque\",\"black\",\"blanchedalmond\",\"blue\",\"blueviolet\",\"brown\",\"burlywood\",\"cadetblue\",\"chartreuse\",\"chocolate\",\"coral\",\"cornflowerblue\",\"cornsilk\",\"crimson\",\"cyan\",\"darkblue\",\"darkcyan\",\"darkgoldenrod\",\"darkgray\",\"darkgreen\",\"darkkhaki\",\"darkmagenta\",\"darkolivegreen\",\"darkorange\",\"darkorchid\",\"darkred\",\"darksalmon\",\"darkseagreen\",\"darkslateblue\",\"darkslategray\",\"darkturquoise\",\"darkviolet\",\"deeppink\",\"deepskyblue\",\"dimgray\",\"dodgerblue\",\"firebrick\",\"floralwhite\",\"forestgreen\",\"fuchsia\",\"gainsboro\",\"ghostwhite\",\"gold\",\"goldenrod\",\"gray\",\"grey\",\"green\",\"greenyellow\",\"honeydew\",\"hotpink\",\"indianred\",\"indigo\",\"ivory\",\"khaki\",\"lavender\",\"lavenderblush\",\"lawngreen\",\"lemonchiffon\",\"lightblue\",\"lightcoral\",\"lightcyan\",\"lightgoldenrodyellow\",\"lightgray\",\"lightgreen\",\"lightpink\",\"lightsalmon\",\"lightseagreen\",\"lightskyblue\",\"lightslategray\",\"lightsteelblue\",\"lightyellow\",\"lime\",\"limegreen\",\"linen\",\"magenta\",\"maroon\",\"mediumaquamarine\",\"mediumblue\",\"mediumorchid\",\"mediumpurple\",\"mediumseagreen\",\"mediumslateblue\",\"mediumspringgreen\",\"mediumturquoise\",\"mediumvioletred\",\"midnightblue\",\"mintcream\",\"mistyrose\",\"moccasin\",\"navajowhite\",\"navy\",\"oldlace\",\"olive\",\"olivedrab\",\"orange\",\"orangered\",\"orchid\",\"palegoldenrod\",\"palegreen\",\"paleturquoise\",\"palevioletred\",\"papayawhip\",\"peachpuff\",\"peru\",\"pink\",\"plum\",\"powderblue\",\"purple\",\"rebeccapurple\",\"red\",\"rosybrown\",\"royalblue\",\"saddlebrown\",\"salmon\",\"sandybrown\",\"seagreen\",\"seashell\",\"sienna\",\"silver\",\"skyblue\",\"slateblue\",\"slategray\",\"snow\",\"springgreen\",\"steelblue\",\"tan\",\"teal\",\"thistle\",\"tomato\",\"turquoise\",\"violet\",\"wheat\",\"white\",\"whitesmoke\",\"yellow\",\"yellowgreen\"];\n var valueKeywords_ = [\"above\",\"absolute\",\"activeborder\",\"additive\",\"activecaption\",\"afar\",\"after-white-space\",\"ahead\",\"alias\",\"all\",\"all-scroll\",\"alphabetic\",\"alternate\",\"always\",\"amharic\",\"amharic-abegede\",\"antialiased\",\"appworkspace\",\"arabic-indic\",\"armenian\",\"asterisks\",\"attr\",\"auto\",\"avoid\",\"avoid-column\",\"avoid-page\",\"avoid-region\",\"background\",\"backwards\",\"baseline\",\"below\",\"bidi-override\",\"binary\",\"bengali\",\"blink\",\"block\",\"block-axis\",\"bold\",\"bolder\",\"border\",\"border-box\",\"both\",\"bottom\",\"break\",\"break-all\",\"break-word\",\"bullets\",\"button\",\"buttonface\",\"buttonhighlight\",\"buttonshadow\",\"buttontext\",\"calc\",\"cambodian\",\"capitalize\",\"caps-lock-indicator\",\"caption\",\"captiontext\",\"caret\",\"cell\",\"center\",\"checkbox\",\"circle\",\"cjk-decimal\",\"cjk-earthly-branch\",\"cjk-heavenly-stem\",\"cjk-ideographic\",\"clear\",\"clip\",\"close-quote\",\"col-resize\",\"collapse\",\"column\",\"compact\",\"condensed\",\"conic-gradient\",\"contain\",\"content\",\"contents\",\"content-box\",\"context-menu\",\"continuous\",\"copy\",\"counter\",\"counters\",\"cover\",\"crop\",\"cross\",\"crosshair\",\"currentcolor\",\"cursive\",\"cyclic\",\"dashed\",\"decimal\",\"decimal-leading-zero\",\"default\",\"default-button\",\"destination-atop\",\"destination-in\",\"destination-out\",\"destination-over\",\"devanagari\",\"disc\",\"discard\",\"disclosure-closed\",\"disclosure-open\",\"document\",\"dot-dash\",\"dot-dot-dash\",\"dotted\",\"double\",\"down\",\"e-resize\",\"ease\",\"ease-in\",\"ease-in-out\",\"ease-out\",\"element\",\"ellipse\",\"ellipsis\",\"embed\",\"end\",\"ethiopic\",\"ethiopic-abegede\",\"ethiopic-abegede-am-et\",\"ethiopic-abegede-gez\",\"ethiopic-abegede-ti-er\",\"ethiopic-abegede-ti-et\",\"ethiopic-halehame-aa-er\",\"ethiopic-halehame-aa-et\",\"ethiopic-halehame-am-et\",\"ethiopic-halehame-gez\",\"ethiopic-halehame-om-et\",\"ethiopic-halehame-sid-et\",\"ethiopic-halehame-so-et\",\"ethiopic-halehame-ti-er\",\"ethiopic-halehame-ti-et\",\"ethiopic-halehame-tig\",\"ethiopic-numeric\",\"ew-resize\",\"expanded\",\"extends\",\"extra-condensed\",\"extra-expanded\",\"fantasy\",\"fast\",\"fill\",\"fixed\",\"flat\",\"flex\",\"footnotes\",\"forwards\",\"from\",\"geometricPrecision\",\"georgian\",\"graytext\",\"groove\",\"gujarati\",\"gurmukhi\",\"hand\",\"hangul\",\"hangul-consonant\",\"hebrew\",\"help\",\"hidden\",\"hide\",\"high\",\"higher\",\"highlight\",\"highlighttext\",\"hiragana\",\"hiragana-iroha\",\"horizontal\",\"hsl\",\"hsla\",\"icon\",\"ignore\",\"inactiveborder\",\"inactivecaption\",\"inactivecaptiontext\",\"infinite\",\"infobackground\",\"infotext\",\"inherit\",\"initial\",\"inline\",\"inline-axis\",\"inline-block\",\"inline-flex\",\"inline-table\",\"inset\",\"inside\",\"intrinsic\",\"invert\",\"italic\",\"japanese-formal\",\"japanese-informal\",\"justify\",\"kannada\",\"katakana\",\"katakana-iroha\",\"keep-all\",\"khmer\",\"korean-hangul-formal\",\"korean-hanja-formal\",\"korean-hanja-informal\",\"landscape\",\"lao\",\"large\",\"larger\",\"left\",\"level\",\"lighter\",\"line-through\",\"linear\",\"linear-gradient\",\"lines\",\"list-item\",\"listbox\",\"listitem\",\"local\",\"logical\",\"loud\",\"lower\",\"lower-alpha\",\"lower-armenian\",\"lower-greek\",\"lower-hexadecimal\",\"lower-latin\",\"lower-norwegian\",\"lower-roman\",\"lowercase\",\"ltr\",\"malayalam\",\"match\",\"matrix\",\"matrix3d\",\"media-play-button\",\"media-slider\",\"media-sliderthumb\",\"media-volume-slider\",\"media-volume-sliderthumb\",\"medium\",\"menu\",\"menulist\",\"menulist-button\",\"menutext\",\"message-box\",\"middle\",\"min-intrinsic\",\"mix\",\"mongolian\",\"monospace\",\"move\",\"multiple\",\"myanmar\",\"n-resize\",\"narrower\",\"ne-resize\",\"nesw-resize\",\"no-close-quote\",\"no-drop\",\"no-open-quote\",\"no-repeat\",\"none\",\"normal\",\"not-allowed\",\"nowrap\",\"ns-resize\",\"numbers\",\"numeric\",\"nw-resize\",\"nwse-resize\",\"oblique\",\"octal\",\"open-quote\",\"optimizeLegibility\",\"optimizeSpeed\",\"oriya\",\"oromo\",\"outset\",\"outside\",\"outside-shape\",\"overlay\",\"overline\",\"padding\",\"padding-box\",\"painted\",\"page\",\"paused\",\"persian\",\"perspective\",\"plus-darker\",\"plus-lighter\",\"pointer\",\"polygon\",\"portrait\",\"pre\",\"pre-line\",\"pre-wrap\",\"preserve-3d\",\"progress\",\"push-button\",\"radial-gradient\",\"radio\",\"read-only\",\"read-write\",\"read-write-plaintext-only\",\"rectangle\",\"region\",\"relative\",\"repeat\",\"repeating-linear-gradient\",\"repeating-radial-gradient\",\"repeating-conic-gradient\",\"repeat-x\",\"repeat-y\",\"reset\",\"reverse\",\"rgb\",\"rgba\",\"ridge\",\"right\",\"rotate\",\"rotate3d\",\"rotateX\",\"rotateY\",\"rotateZ\",\"round\",\"row-resize\",\"rtl\",\"run-in\",\"running\",\"s-resize\",\"sans-serif\",\"scale\",\"scale3d\",\"scaleX\",\"scaleY\",\"scaleZ\",\"scroll\",\"scrollbar\",\"scroll-position\",\"se-resize\",\"searchfield\",\"searchfield-cancel-button\",\"searchfield-decoration\",\"searchfield-results-button\",\"searchfield-results-decoration\",\"semi-condensed\",\"semi-expanded\",\"separate\",\"serif\",\"show\",\"sidama\",\"simp-chinese-formal\",\"simp-chinese-informal\",\"single\",\"skew\",\"skewX\",\"skewY\",\"skip-white-space\",\"slide\",\"slider-horizontal\",\"slider-vertical\",\"sliderthumb-horizontal\",\"sliderthumb-vertical\",\"slow\",\"small\",\"small-caps\",\"small-caption\",\"smaller\",\"solid\",\"somali\",\"source-atop\",\"source-in\",\"source-out\",\"source-over\",\"space\",\"spell-out\",\"square\",\"square-button\",\"standard\",\"start\",\"static\",\"status-bar\",\"stretch\",\"stroke\",\"sub\",\"subpixel-antialiased\",\"super\",\"sw-resize\",\"symbolic\",\"symbols\",\"table\",\"table-caption\",\"table-cell\",\"table-column\",\"table-column-group\",\"table-footer-group\",\"table-header-group\",\"table-row\",\"table-row-group\",\"tamil\",\"telugu\",\"text\",\"text-bottom\",\"text-top\",\"textarea\",\"textfield\",\"thai\",\"thick\",\"thin\",\"threeddarkshadow\",\"threedface\",\"threedhighlight\",\"threedlightshadow\",\"threedshadow\",\"tibetan\",\"tigre\",\"tigrinya-er\",\"tigrinya-er-abegede\",\"tigrinya-et\",\"tigrinya-et-abegede\",\"to\",\"top\",\"trad-chinese-formal\",\"trad-chinese-informal\",\"translate\",\"translate3d\",\"translateX\",\"translateY\",\"translateZ\",\"transparent\",\"ultra-condensed\",\"ultra-expanded\",\"underline\",\"up\",\"upper-alpha\",\"upper-armenian\",\"upper-greek\",\"upper-hexadecimal\",\"upper-latin\",\"upper-norwegian\",\"upper-roman\",\"uppercase\",\"urdu\",\"url\",\"var\",\"vertical\",\"vertical-text\",\"visible\",\"visibleFill\",\"visiblePainted\",\"visibleStroke\",\"visual\",\"w-resize\",\"wait\",\"wave\",\"wider\",\"window\",\"windowframe\",\"windowtext\",\"words\",\"x-large\",\"x-small\",\"xor\",\"xx-large\",\"xx-small\",\"bicubic\",\"optimizespeed\",\"grayscale\",\"row\",\"row-reverse\",\"wrap\",\"wrap-reverse\",\"column-reverse\",\"flex-start\",\"flex-end\",\"space-between\",\"space-around\", \"unset\"];\n\n var wordOperatorKeywords_ = [\"in\",\"and\",\"or\",\"not\",\"is not\",\"is a\",\"is\",\"isnt\",\"defined\",\"if unless\"],\n blockKeywords_ = [\"for\",\"if\",\"else\",\"unless\", \"from\", \"to\"],\n commonAtoms_ = [\"null\",\"true\",\"false\",\"href\",\"title\",\"type\",\"not-allowed\",\"readonly\",\"disabled\"],\n commonDef_ = [\"@font-face\", \"@keyframes\", \"@media\", \"@viewport\", \"@page\", \"@host\", \"@supports\", \"@block\", \"@css\"];\n\n var hintWords = tagKeywords_.concat(documentTypes_,mediaTypes_,mediaFeatures_,\n propertyKeywords_,nonStandardPropertyKeywords_,\n colorKeywords_,valueKeywords_,fontProperties_,\n wordOperatorKeywords_,blockKeywords_,\n commonAtoms_,commonDef_);\n\n function wordRegexp(words) {\n words = words.sort(function(a,b){return b > a;});\n return new RegExp(\"^((\" + words.join(\")|(\") + \"))\\\\b\");\n }\n\n function keySet(array) {\n var keys = {};\n for (var i = 0; i < array.length; ++i) keys[array[i]] = true;\n return keys;\n }\n\n function escapeRegExp(text) {\n return text.replace(/[-[\\]{}()*+?.,\\\\^$|#\\s]/g, \"\\\\$&\");\n }\n\n CodeMirror.registerHelper(\"hintWords\", \"stylus\", hintWords);\n CodeMirror.defineMIME(\"text/x-styl\", \"stylus\");\n});\n", "// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/5/LICENSE\n\n(function(mod) {\n if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n mod(require(\"../../lib/codemirror\"), require(\"../javascript/javascript\"), require(\"../css/css\"), require(\"../htmlmixed/htmlmixed\"));\n else if (typeof define == \"function\" && define.amd) // AMD\n define([\"../../lib/codemirror\", \"../javascript/javascript\", \"../css/css\", \"../htmlmixed/htmlmixed\"], mod);\n else // Plain browser env\n mod(CodeMirror);\n})(function(CodeMirror) {\n\"use strict\";\n\nCodeMirror.defineMode(\"pug\", function (config) {\n // token types\n var KEYWORD = 'keyword';\n var DOCTYPE = 'meta';\n var ID = 'builtin';\n var CLASS = 'qualifier';\n\n var ATTRS_NEST = {\n '{': '}',\n '(': ')',\n '[': ']'\n };\n\n var jsMode = CodeMirror.getMode(config, 'javascript');\n\n function State() {\n this.javaScriptLine = false;\n this.javaScriptLineExcludesColon = false;\n\n this.javaScriptArguments = false;\n this.javaScriptArgumentsDepth = 0;\n\n this.isInterpolating = false;\n this.interpolationNesting = 0;\n\n this.jsState = CodeMirror.startState(jsMode);\n\n this.restOfLine = '';\n\n this.isIncludeFiltered = false;\n this.isEach = false;\n\n this.lastTag = '';\n this.scriptType = '';\n\n // Attributes Mode\n this.isAttrs = false;\n this.attrsNest = [];\n this.inAttributeName = true;\n this.attributeIsType = false;\n this.attrValue = '';\n\n // Indented Mode\n this.indentOf = Infinity;\n this.indentToken = '';\n\n this.innerMode = null;\n this.innerState = null;\n\n this.innerModeForLine = false;\n }\n /**\n * Safely copy a state\n *\n * @return {State}\n */\n State.prototype.copy = function () {\n var res = new State();\n res.javaScriptLine = this.javaScriptLine;\n res.javaScriptLineExcludesColon = this.javaScriptLineExcludesColon;\n res.javaScriptArguments = this.javaScriptArguments;\n res.javaScriptArgumentsDepth = this.javaScriptArgumentsDepth;\n res.isInterpolating = this.isInterpolating;\n res.interpolationNesting = this.interpolationNesting;\n\n res.jsState = CodeMirror.copyState(jsMode, this.jsState);\n\n res.innerMode = this.innerMode;\n if (this.innerMode && this.innerState) {\n res.innerState = CodeMirror.copyState(this.innerMode, this.innerState);\n }\n\n res.restOfLine = this.restOfLine;\n\n res.isIncludeFiltered = this.isIncludeFiltered;\n res.isEach = this.isEach;\n res.lastTag = this.lastTag;\n res.scriptType = this.scriptType;\n res.isAttrs = this.isAttrs;\n res.attrsNest = this.attrsNest.slice();\n res.inAttributeName = this.inAttributeName;\n res.attributeIsType = this.attributeIsType;\n res.attrValue = this.attrValue;\n res.indentOf = this.indentOf;\n res.indentToken = this.indentToken;\n\n res.innerModeForLine = this.innerModeForLine;\n\n return res;\n };\n\n function javaScript(stream, state) {\n if (stream.sol()) {\n // if javaScriptLine was set at end of line, ignore it\n state.javaScriptLine = false;\n state.javaScriptLineExcludesColon = false;\n }\n if (state.javaScriptLine) {\n if (state.javaScriptLineExcludesColon && stream.peek() === ':') {\n state.javaScriptLine = false;\n state.javaScriptLineExcludesColon = false;\n return;\n }\n var tok = jsMode.token(stream, state.jsState);\n if (stream.eol()) state.javaScriptLine = false;\n return tok || true;\n }\n }\n function javaScriptArguments(stream, state) {\n if (state.javaScriptArguments) {\n if (state.javaScriptArgumentsDepth === 0 && stream.peek() !== '(') {\n state.javaScriptArguments = false;\n return;\n }\n if (stream.peek() === '(') {\n state.javaScriptArgumentsDepth++;\n } else if (stream.peek() === ')') {\n state.javaScriptArgumentsDepth--;\n }\n if (state.javaScriptArgumentsDepth === 0) {\n state.javaScriptArguments = false;\n return;\n }\n\n var tok = jsMode.token(stream, state.jsState);\n return tok || true;\n }\n }\n\n function yieldStatement(stream) {\n if (stream.match(/^yield\\b/)) {\n return 'keyword';\n }\n }\n\n function doctype(stream) {\n if (stream.match(/^(?:doctype) *([^\\n]+)?/)) {\n return DOCTYPE;\n }\n }\n\n function interpolation(stream, state) {\n if (stream.match('#{')) {\n state.isInterpolating = true;\n state.interpolationNesting = 0;\n return 'punctuation';\n }\n }\n\n function interpolationContinued(stream, state) {\n if (state.isInterpolating) {\n if (stream.peek() === '}') {\n state.interpolationNesting--;\n if (state.interpolationNesting < 0) {\n stream.next();\n state.isInterpolating = false;\n return 'punctuation';\n }\n } else if (stream.peek() === '{') {\n state.interpolationNesting++;\n }\n return jsMode.token(stream, state.jsState) || true;\n }\n }\n\n function caseStatement(stream, state) {\n if (stream.match(/^case\\b/)) {\n state.javaScriptLine = true;\n return KEYWORD;\n }\n }\n\n function when(stream, state) {\n if (stream.match(/^when\\b/)) {\n state.javaScriptLine = true;\n state.javaScriptLineExcludesColon = true;\n return KEYWORD;\n }\n }\n\n function defaultStatement(stream) {\n if (stream.match(/^default\\b/)) {\n return KEYWORD;\n }\n }\n\n function extendsStatement(stream, state) {\n if (stream.match(/^extends?\\b/)) {\n state.restOfLine = 'string';\n return KEYWORD;\n }\n }\n\n function append(stream, state) {\n if (stream.match(/^append\\b/)) {\n state.restOfLine = 'variable';\n return KEYWORD;\n }\n }\n function prepend(stream, state) {\n if (stream.match(/^prepend\\b/)) {\n state.restOfLine = 'variable';\n return KEYWORD;\n }\n }\n function block(stream, state) {\n if (stream.match(/^block\\b *(?:(prepend|append)\\b)?/)) {\n state.restOfLine = 'variable';\n return KEYWORD;\n }\n }\n\n function include(stream, state) {\n if (stream.match(/^include\\b/)) {\n state.restOfLine = 'string';\n return KEYWORD;\n }\n }\n\n function includeFiltered(stream, state) {\n if (stream.match(/^include:([a-zA-Z0-9\\-]+)/, false) && stream.match('include')) {\n state.isIncludeFiltered = true;\n return KEYWORD;\n }\n }\n\n function includeFilteredContinued(stream, state) {\n if (state.isIncludeFiltered) {\n var tok = filter(stream, state);\n state.isIncludeFiltered = false;\n state.restOfLine = 'string';\n return tok;\n }\n }\n\n function mixin(stream, state) {\n if (stream.match(/^mixin\\b/)) {\n state.javaScriptLine = true;\n return KEYWORD;\n }\n }\n\n function call(stream, state) {\n if (stream.match(/^\\+([-\\w]+)/)) {\n if (!stream.match(/^\\( *[-\\w]+ *=/, false)) {\n state.javaScriptArguments = true;\n state.javaScriptArgumentsDepth = 0;\n }\n return 'variable';\n }\n if (stream.match('+#{', false)) {\n stream.next();\n state.mixinCallAfter = true;\n return interpolation(stream, state);\n }\n }\n function callArguments(stream, state) {\n if (state.mixinCallAfter) {\n state.mixinCallAfter = false;\n if (!stream.match(/^\\( *[-\\w]+ *=/, false)) {\n state.javaScriptArguments = true;\n state.javaScriptArgumentsDepth = 0;\n }\n return true;\n }\n }\n\n function conditional(stream, state) {\n if (stream.match(/^(if|unless|else if|else)\\b/)) {\n state.javaScriptLine = true;\n return KEYWORD;\n }\n }\n\n function each(stream, state) {\n if (stream.match(/^(- *)?(each|for)\\b/)) {\n state.isEach = true;\n return KEYWORD;\n }\n }\n function eachContinued(stream, state) {\n if (state.isEach) {\n if (stream.match(/^ in\\b/)) {\n state.javaScriptLine = true;\n state.isEach = false;\n return KEYWORD;\n } else if (stream.sol() || stream.eol()) {\n state.isEach = false;\n } else if (stream.next()) {\n while (!stream.match(/^ in\\b/, false) && stream.next());\n return 'variable';\n }\n }\n }\n\n function whileStatement(stream, state) {\n if (stream.match(/^while\\b/)) {\n state.javaScriptLine = true;\n return KEYWORD;\n }\n }\n\n function tag(stream, state) {\n var captures;\n if (captures = stream.match(/^(\\w(?:[-:\\w]*\\w)?)\\/?/)) {\n state.lastTag = captures[1].toLowerCase();\n if (state.lastTag === 'script') {\n state.scriptType = 'application/javascript';\n }\n return 'tag';\n }\n }\n\n function filter(stream, state) {\n if (stream.match(/^:([\\w\\-]+)/)) {\n var innerMode;\n if (config && config.innerModes) {\n innerMode = config.innerModes(stream.current().substring(1));\n }\n if (!innerMode) {\n innerMode = stream.current().substring(1);\n }\n if (typeof innerMode === 'string') {\n innerMode = CodeMirror.getMode(config, innerMode);\n }\n setInnerMode(stream, state, innerMode);\n return 'atom';\n }\n }\n\n function code(stream, state) {\n if (stream.match(/^(!?=|-)/)) {\n state.javaScriptLine = true;\n return 'punctuation';\n }\n }\n\n function id(stream) {\n if (stream.match(/^#([\\w-]+)/)) {\n return ID;\n }\n }\n\n function className(stream) {\n if (stream.match(/^\\.([\\w-]+)/)) {\n return CLASS;\n }\n }\n\n function attrs(stream, state) {\n if (stream.peek() == '(') {\n stream.next();\n state.isAttrs = true;\n state.attrsNest = [];\n state.inAttributeName = true;\n state.attrValue = '';\n state.attributeIsType = false;\n return 'punctuation';\n }\n }\n\n function attrsContinued(stream, state) {\n if (state.isAttrs) {\n if (ATTRS_NEST[stream.peek()]) {\n state.attrsNest.push(ATTRS_NEST[stream.peek()]);\n }\n if (state.attrsNest[state.attrsNest.length - 1] === stream.peek()) {\n state.attrsNest.pop();\n } else if (stream.eat(')')) {\n state.isAttrs = false;\n return 'punctuation';\n }\n if (state.inAttributeName && stream.match(/^[^=,\\)!]+/)) {\n if (stream.peek() === '=' || stream.peek() === '!') {\n state.inAttributeName = false;\n state.jsState = CodeMirror.startState(jsMode);\n if (state.lastTag === 'script' && stream.current().trim().toLowerCase() === 'type') {\n state.attributeIsType = true;\n } else {\n state.attributeIsType = false;\n }\n }\n return 'attribute';\n }\n\n var tok = jsMode.token(stream, state.jsState);\n if (state.attributeIsType && tok === 'string') {\n state.scriptType = stream.current().toString();\n }\n if (state.attrsNest.length === 0 && (tok === 'string' || tok === 'variable' || tok === 'keyword')) {\n try {\n Function('', 'var x ' + state.attrValue.replace(/,\\s*$/, '').replace(/^!/, ''));\n state.inAttributeName = true;\n state.attrValue = '';\n stream.backUp(stream.current().length);\n return attrsContinued(stream, state);\n } catch (ex) {\n //not the end of an attribute\n }\n }\n state.attrValue += stream.current();\n return tok || true;\n }\n }\n\n function attributesBlock(stream, state) {\n if (stream.match(/^&attributes\\b/)) {\n state.javaScriptArguments = true;\n state.javaScriptArgumentsDepth = 0;\n return 'keyword';\n }\n }\n\n function indent(stream) {\n if (stream.sol() && stream.eatSpace()) {\n return 'indent';\n }\n }\n\n function comment(stream, state) {\n if (stream.match(/^ *\\/\\/(-)?([^\\n]*)/)) {\n state.indentOf = stream.indentation();\n state.indentToken = 'comment';\n return 'comment';\n }\n }\n\n function colon(stream) {\n if (stream.match(/^: */)) {\n return 'colon';\n }\n }\n\n function text(stream, state) {\n if (stream.match(/^(?:\\| ?| )([^\\n]+)/)) {\n return 'string';\n }\n if (stream.match(/^(<[^\\n]*)/, false)) {\n // html string\n setInnerMode(stream, state, 'htmlmixed');\n state.innerModeForLine = true;\n return innerMode(stream, state, true);\n }\n }\n\n function dot(stream, state) {\n if (stream.eat('.')) {\n var innerMode = null;\n if (state.lastTag === 'script' && state.scriptType.toLowerCase().indexOf('javascript') != -1) {\n innerMode = state.scriptType.toLowerCase().replace(/\"|'/g, '');\n } else if (state.lastTag === 'style') {\n innerMode = 'css';\n }\n setInnerMode(stream, state, innerMode);\n return 'dot';\n }\n }\n\n function fail(stream) {\n stream.next();\n return null;\n }\n\n\n function setInnerMode(stream, state, mode) {\n mode = CodeMirror.mimeModes[mode] || mode;\n mode = config.innerModes ? config.innerModes(mode) || mode : mode;\n mode = CodeMirror.mimeModes[mode] || mode;\n mode = CodeMirror.getMode(config, mode);\n state.indentOf = stream.indentation();\n\n if (mode && mode.name !== 'null') {\n state.innerMode = mode;\n } else {\n state.indentToken = 'string';\n }\n }\n function innerMode(stream, state, force) {\n if (stream.indentation() > state.indentOf || (state.innerModeForLine && !stream.sol()) || force) {\n if (state.innerMode) {\n if (!state.innerState) {\n state.innerState = state.innerMode.startState ? CodeMirror.startState(state.innerMode, stream.indentation()) : {};\n }\n return stream.hideFirstChars(state.indentOf + 2, function () {\n return state.innerMode.token(stream, state.innerState) || true;\n });\n } else {\n stream.skipToEnd();\n return state.indentToken;\n }\n } else if (stream.sol()) {\n state.indentOf = Infinity;\n state.indentToken = null;\n state.innerMode = null;\n state.innerState = null;\n }\n }\n function restOfLine(stream, state) {\n if (stream.sol()) {\n // if restOfLine was set at end of line, ignore it\n state.restOfLine = '';\n }\n if (state.restOfLine) {\n stream.skipToEnd();\n var tok = state.restOfLine;\n state.restOfLine = '';\n return tok;\n }\n }\n\n\n function startState() {\n return new State();\n }\n function copyState(state) {\n return state.copy();\n }\n /**\n * Get the next token in the stream\n *\n * @param {Stream} stream\n * @param {State} state\n */\n function nextToken(stream, state) {\n var tok = innerMode(stream, state)\n || restOfLine(stream, state)\n || interpolationContinued(stream, state)\n || includeFilteredContinued(stream, state)\n || eachContinued(stream, state)\n || attrsContinued(stream, state)\n || javaScript(stream, state)\n || javaScriptArguments(stream, state)\n || callArguments(stream, state)\n\n || yieldStatement(stream)\n || doctype(stream)\n || interpolation(stream, state)\n || caseStatement(stream, state)\n || when(stream, state)\n || defaultStatement(stream)\n || extendsStatement(stream, state)\n || append(stream, state)\n || prepend(stream, state)\n || block(stream, state)\n || include(stream, state)\n || includeFiltered(stream, state)\n || mixin(stream, state)\n || call(stream, state)\n || conditional(stream, state)\n || each(stream, state)\n || whileStatement(stream, state)\n || tag(stream, state)\n || filter(stream, state)\n || code(stream, state)\n || id(stream)\n || className(stream)\n || attrs(stream, state)\n || attributesBlock(stream, state)\n || indent(stream)\n || text(stream, state)\n || comment(stream, state)\n || colon(stream)\n || dot(stream, state)\n || fail(stream);\n\n return tok === true ? null : tok;\n }\n return {\n startState: startState,\n copyState: copyState,\n token: nextToken\n };\n}, 'javascript', 'css', 'htmlmixed');\n\nCodeMirror.defineMIME('text/x-pug', 'pug');\nCodeMirror.defineMIME('text/x-jade', 'pug');\n\n});\n", "// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/5/LICENSE\n\n(function(mod) {\n if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n mod(require(\"../../lib/codemirror\"));\n else if (typeof define == \"function\" && define.amd) // AMD\n define([\"../../lib/codemirror\"], mod);\n else // Plain browser env\n mod(CodeMirror);\n})(function(CodeMirror) {\n\"use strict\";\n\nCodeMirror.multiplexingMode = function(outer /*, others */) {\n // Others should be {open, close, mode [, delimStyle] [, innerStyle] [, parseDelimiters]} objects\n var others = Array.prototype.slice.call(arguments, 1);\n\n function indexOf(string, pattern, from, returnEnd) {\n if (typeof pattern == \"string\") {\n var found = string.indexOf(pattern, from);\n return returnEnd && found > -1 ? found + pattern.length : found;\n }\n var m = pattern.exec(from ? string.slice(from) : string);\n return m ? m.index + from + (returnEnd ? m[0].length : 0) : -1;\n }\n\n return {\n startState: function() {\n return {\n outer: CodeMirror.startState(outer),\n innerActive: null,\n inner: null,\n startingInner: false\n };\n },\n\n copyState: function(state) {\n return {\n outer: CodeMirror.copyState(outer, state.outer),\n innerActive: state.innerActive,\n inner: state.innerActive && CodeMirror.copyState(state.innerActive.mode, state.inner),\n startingInner: state.startingInner\n };\n },\n\n token: function(stream, state) {\n if (!state.innerActive) {\n var cutOff = Infinity, oldContent = stream.string;\n for (var i = 0; i < others.length; ++i) {\n var other = others[i];\n var found = indexOf(oldContent, other.open, stream.pos);\n if (found == stream.pos) {\n if (!other.parseDelimiters) stream.match(other.open);\n state.startingInner = !!other.parseDelimiters\n state.innerActive = other;\n\n // Get the outer indent, making sure to handle CodeMirror.Pass\n var outerIndent = 0;\n if (outer.indent) {\n var possibleOuterIndent = outer.indent(state.outer, \"\", \"\");\n if (possibleOuterIndent !== CodeMirror.Pass) outerIndent = possibleOuterIndent;\n }\n\n state.inner = CodeMirror.startState(other.mode, outerIndent);\n return other.delimStyle && (other.delimStyle + \" \" + other.delimStyle + \"-open\");\n } else if (found != -1 && found < cutOff) {\n cutOff = found;\n }\n }\n if (cutOff != Infinity) stream.string = oldContent.slice(0, cutOff);\n var outerToken = outer.token(stream, state.outer);\n if (cutOff != Infinity) stream.string = oldContent;\n return outerToken;\n } else {\n var curInner = state.innerActive, oldContent = stream.string;\n if (!curInner.close && stream.sol()) {\n state.innerActive = state.inner = null;\n return this.token(stream, state);\n }\n var found = curInner.close && !state.startingInner ?\n indexOf(oldContent, curInner.close, stream.pos, curInner.parseDelimiters) : -1;\n if (found == stream.pos && !curInner.parseDelimiters) {\n stream.match(curInner.close);\n state.innerActive = state.inner = null;\n return curInner.delimStyle && (curInner.delimStyle + \" \" + curInner.delimStyle + \"-close\");\n }\n if (found > -1) stream.string = oldContent.slice(0, found);\n var innerToken = curInner.mode.token(stream, state.inner);\n if (found > -1) stream.string = oldContent;\n else if (stream.pos > stream.start) state.startingInner = false\n\n if (found == stream.pos && curInner.parseDelimiters)\n state.innerActive = state.inner = null;\n\n if (curInner.innerStyle) {\n if (innerToken) innerToken = innerToken + \" \" + curInner.innerStyle;\n else innerToken = curInner.innerStyle;\n }\n\n return innerToken;\n }\n },\n\n indent: function(state, textAfter, line) {\n var mode = state.innerActive ? state.innerActive.mode : outer;\n if (!mode.indent) return CodeMirror.Pass;\n return mode.indent(state.innerActive ? state.inner : state.outer, textAfter, line);\n },\n\n blankLine: function(state) {\n var mode = state.innerActive ? state.innerActive.mode : outer;\n if (mode.blankLine) {\n mode.blankLine(state.innerActive ? state.inner : state.outer);\n }\n if (!state.innerActive) {\n for (var i = 0; i < others.length; ++i) {\n var other = others[i];\n if (other.open === \"\\n\") {\n state.innerActive = other;\n state.inner = CodeMirror.startState(other.mode, mode.indent ? mode.indent(state.outer, \"\", \"\") : 0);\n }\n }\n } else if (state.innerActive.close === \"\\n\") {\n state.innerActive = state.inner = null;\n }\n },\n\n electricChars: outer.electricChars,\n\n innerMode: function(state) {\n return state.inner ? {state: state.inner, mode: state.innerActive.mode} : {state: state.outer, mode: outer};\n }\n };\n};\n\n});\n", "// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/5/LICENSE\n\n(function(mod) {\n if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n mod(require(\"../../lib/codemirror\"), require(\"../../addon/mode/simple\"), require(\"../../addon/mode/multiplex\"));\n else if (typeof define == \"function\" && define.amd) // AMD\n define([\"../../lib/codemirror\", \"../../addon/mode/simple\", \"../../addon/mode/multiplex\"], mod);\n else // Plain browser env\n mod(CodeMirror);\n})(function(CodeMirror) {\n \"use strict\";\n\n CodeMirror.defineSimpleMode(\"handlebars-tags\", {\n start: [\n { regex: /\\{\\{\\{/, push: \"handlebars_raw\", token: \"tag\" },\n { regex: /\\{\\{!--/, push: \"dash_comment\", token: \"comment\" },\n { regex: /\\{\\{!/, push: \"comment\", token: \"comment\" },\n { regex: /\\{\\{/, push: \"handlebars\", token: \"tag\" }\n ],\n handlebars_raw: [\n { regex: /\\}\\}\\}/, pop: true, token: \"tag\" },\n ],\n handlebars: [\n { regex: /\\}\\}/, pop: true, token: \"tag\" },\n\n // Double and single quotes\n { regex: /\"(?:[^\\\\\"]|\\\\.)*\"?/, token: \"string\" },\n { regex: /'(?:[^\\\\']|\\\\.)*'?/, token: \"string\" },\n\n // Handlebars keywords\n { regex: />|[#\\/]([A-Za-z_]\\w*)/, token: \"keyword\" },\n { regex: /(?:else|this)\\b/, token: \"keyword\" },\n\n // Numeral\n { regex: /\\d+/i, token: \"number\" },\n\n // Atoms like = and .\n { regex: /=|~|@|true|false/, token: \"atom\" },\n\n // Paths\n { regex: /(?:\\.\\.\\/)*(?:[A-Za-z_][\\w\\.]*)+/, token: \"variable-2\" }\n ],\n dash_comment: [\n { regex: /--\\}\\}/, pop: true, token: \"comment\" },\n\n // Commented code\n { regex: /./, token: \"comment\"}\n ],\n comment: [\n { regex: /\\}\\}/, pop: true, token: \"comment\" },\n { regex: /./, token: \"comment\" }\n ],\n meta: {\n blockCommentStart: \"{{--\",\n blockCommentEnd: \"--}}\"\n }\n });\n\n CodeMirror.defineMode(\"handlebars\", function(config, parserConfig) {\n var handlebars = CodeMirror.getMode(config, \"handlebars-tags\");\n if (!parserConfig || !parserConfig.base) return handlebars;\n return CodeMirror.multiplexingMode(\n CodeMirror.getMode(config, parserConfig.base),\n {open: \"{{\", close: /\\}\\}\\}?/, mode: handlebars, parseDelimiters: true}\n );\n });\n\n CodeMirror.defineMIME(\"text/x-handlebars-template\", \"handlebars\");\n});\n", "// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/5/LICENSE\n\n(function (mod) {\n \"use strict\";\n if (typeof exports === \"object\" && typeof module === \"object\") {// CommonJS\n mod(require(\"../../lib/codemirror\"),\n require(\"../../addon/mode/overlay\"),\n require(\"../xml/xml\"),\n require(\"../javascript/javascript\"),\n require(\"../coffeescript/coffeescript\"),\n require(\"../css/css\"),\n require(\"../sass/sass\"),\n require(\"../stylus/stylus\"),\n require(\"../pug/pug\"),\n require(\"../handlebars/handlebars\"));\n } else if (typeof define === \"function\" && define.amd) { // AMD\n define([\"../../lib/codemirror\",\n \"../../addon/mode/overlay\",\n \"../xml/xml\",\n \"../javascript/javascript\",\n \"../coffeescript/coffeescript\",\n \"../css/css\",\n \"../sass/sass\",\n \"../stylus/stylus\",\n \"../pug/pug\",\n \"../handlebars/handlebars\"], mod);\n } else { // Plain browser env\n mod(CodeMirror);\n }\n})(function (CodeMirror) {\n var tagLanguages = {\n script: [\n [\"lang\", /coffee(script)?/, \"coffeescript\"],\n [\"type\", /^(?:text|application)\\/(?:x-)?coffee(?:script)?$/, \"coffeescript\"],\n [\"lang\", /^babel$/, \"javascript\"],\n [\"type\", /^text\\/babel$/, \"javascript\"],\n [\"type\", /^text\\/ecmascript-\\d+$/, \"javascript\"]\n ],\n style: [\n [\"lang\", /^stylus$/i, \"stylus\"],\n [\"lang\", /^sass$/i, \"sass\"],\n [\"lang\", /^less$/i, \"text/x-less\"],\n [\"lang\", /^scss$/i, \"text/x-scss\"],\n [\"type\", /^(text\\/)?(x-)?styl(us)?$/i, \"stylus\"],\n [\"type\", /^text\\/sass/i, \"sass\"],\n [\"type\", /^(text\\/)?(x-)?scss$/i, \"text/x-scss\"],\n [\"type\", /^(text\\/)?(x-)?less$/i, \"text/x-less\"]\n ],\n template: [\n [\"lang\", /^vue-template$/i, \"vue\"],\n [\"lang\", /^pug$/i, \"pug\"],\n [\"lang\", /^handlebars$/i, \"handlebars\"],\n [\"type\", /^(text\\/)?(x-)?pug$/i, \"pug\"],\n [\"type\", /^text\\/x-handlebars-template$/i, \"handlebars\"],\n [null, null, \"vue-template\"]\n ]\n };\n\n CodeMirror.defineMode(\"vue-template\", function (config, parserConfig) {\n var mustacheOverlay = {\n token: function (stream) {\n if (stream.match(/^\\{\\{.*?\\}\\}/)) return \"meta mustache\";\n while (stream.next() && !stream.match(\"{{\", false)) {}\n return null;\n }\n };\n return CodeMirror.overlayMode(CodeMirror.getMode(config, parserConfig.backdrop || \"text/html\"), mustacheOverlay);\n });\n\n CodeMirror.defineMode(\"vue\", function (config) {\n return CodeMirror.getMode(config, {name: \"htmlmixed\", tags: tagLanguages});\n }, \"htmlmixed\", \"xml\", \"javascript\", \"coffeescript\", \"css\", \"sass\", \"stylus\", \"pug\", \"handlebars\");\n\n CodeMirror.defineMIME(\"script/x-vue\", \"vue\");\n CodeMirror.defineMIME(\"text/x-vue\", \"vue\");\n});\n", "// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/5/LICENSE\n\n(function(mod) {\n if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n mod(require(\"../../lib/codemirror\"));\n else if (typeof define == \"function\" && define.amd) // AMD\n define([\"../../lib/codemirror\"], mod);\n else // Plain browser env\n mod(CodeMirror);\n})(function(CodeMirror) {\n\"use strict\";\n\nCodeMirror.defineMode(\"yaml\", function() {\n\n var cons = ['true', 'false', 'on', 'off', 'yes', 'no'];\n var keywordRegex = new RegExp(\"\\\\b((\"+cons.join(\")|(\")+\"))$\", 'i');\n\n return {\n token: function(stream, state) {\n var ch = stream.peek();\n var esc = state.escaped;\n state.escaped = false;\n /* comments */\n if (ch == \"#\" && (stream.pos == 0 || /\\s/.test(stream.string.charAt(stream.pos - 1)))) {\n stream.skipToEnd();\n return \"comment\";\n }\n\n if (stream.match(/^('([^']|\\\\.)*'?|\"([^\"]|\\\\.)*\"?)/))\n return \"string\";\n\n if (state.literal && stream.indentation() > state.keyCol) {\n stream.skipToEnd(); return \"string\";\n } else if (state.literal) { state.literal = false; }\n if (stream.sol()) {\n state.keyCol = 0;\n state.pair = false;\n state.pairStart = false;\n /* document start */\n if(stream.match('---')) { return \"def\"; }\n /* document end */\n if (stream.match('...')) { return \"def\"; }\n /* array list item */\n if (stream.match(/\\s*-\\s+/)) { return 'meta'; }\n }\n /* inline pairs/lists */\n if (stream.match(/^(\\{|\\}|\\[|\\])/)) {\n if (ch == '{')\n state.inlinePairs++;\n else if (ch == '}')\n state.inlinePairs--;\n else if (ch == '[')\n state.inlineList++;\n else\n state.inlineList--;\n return 'meta';\n }\n\n /* list separator */\n if (state.inlineList > 0 && !esc && ch == ',') {\n stream.next();\n return 'meta';\n }\n /* pairs separator */\n if (state.inlinePairs > 0 && !esc && ch == ',') {\n state.keyCol = 0;\n state.pair = false;\n state.pairStart = false;\n stream.next();\n return 'meta';\n }\n\n /* start of value of a pair */\n if (state.pairStart) {\n /* block literals */\n if (stream.match(/^\\s*(\\||\\>)\\s*/)) { state.literal = true; return 'meta'; };\n /* references */\n if (stream.match(/^\\s*(\\&|\\*)[a-z0-9\\._-]+\\b/i)) { return 'variable-2'; }\n /* numbers */\n if (state.inlinePairs == 0 && stream.match(/^\\s*-?[0-9\\.\\,]+\\s?$/)) { return 'number'; }\n if (state.inlinePairs > 0 && stream.match(/^\\s*-?[0-9\\.\\,]+\\s?(?=(,|}))/)) { return 'number'; }\n /* keywords */\n if (stream.match(keywordRegex)) { return 'keyword'; }\n }\n\n /* pairs (associative arrays) -> key */\n if (!state.pair && stream.match(/^\\s*(?:[,\\[\\]{}&*!|>'\"%@`][^\\s'\":]|[^\\s,\\[\\]{}#&*!|>'\"%@`])[^#:]*(?=:($|\\s))/)) {\n state.pair = true;\n state.keyCol = stream.indentation();\n return \"atom\";\n }\n if (state.pair && stream.match(/^:\\s*/)) { state.pairStart = true; return 'meta'; }\n\n /* nothing found, continue */\n state.pairStart = false;\n state.escaped = (ch == '\\\\');\n stream.next();\n return null;\n },\n startState: function() {\n return {\n pair: false,\n pairStart: false,\n keyCol: 0,\n inlinePairs: 0,\n inlineList: 0,\n literal: false,\n escaped: false\n };\n },\n lineComment: \"#\",\n fold: \"indent\"\n };\n});\n\nCodeMirror.defineMIME(\"text/x-yaml\", \"yaml\");\nCodeMirror.defineMIME(\"text/yaml\", \"yaml\");\n\n});\n", "// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/5/LICENSE\n\n(function(mod) {\n if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n mod(require(\"../../lib/codemirror\"));\n else if (typeof define == \"function\" && define.amd) // AMD\n define([\"../../lib/codemirror\"], mod);\n else // Plain browser env\n mod(CodeMirror);\n})(function(CodeMirror) {\n \"use strict\";\n\n var listRE = /^(\\s*)(>[> ]*|[*+-] \\[[x ]\\]\\s|[*+-]\\s|(\\d+)([.)]))(\\s*)/,\n emptyListRE = /^(\\s*)(>[> ]*|[*+-] \\[[x ]\\]|[*+-]|(\\d+)[.)])(\\s*)$/,\n unorderedListRE = /[*+-]\\s/;\n\n CodeMirror.commands.newlineAndIndentContinueMarkdownList = function(cm) {\n if (cm.getOption(\"disableInput\")) return CodeMirror.Pass;\n var ranges = cm.listSelections(), replacements = [];\n for (var i = 0; i < ranges.length; i++) {\n var pos = ranges[i].head;\n\n // If we're not in Markdown mode, fall back to normal newlineAndIndent\n var eolState = cm.getStateAfter(pos.line);\n var inner = CodeMirror.innerMode(cm.getMode(), eolState);\n if (inner.mode.name !== \"markdown\" && inner.mode.helperType !== \"markdown\") {\n cm.execCommand(\"newlineAndIndent\");\n return;\n } else {\n eolState = inner.state;\n }\n\n var inList = eolState.list !== false;\n var inQuote = eolState.quote !== 0;\n\n var line = cm.getLine(pos.line), match = listRE.exec(line);\n var cursorBeforeBullet = /^\\s*$/.test(line.slice(0, pos.ch));\n if (!ranges[i].empty() || (!inList && !inQuote) || !match || cursorBeforeBullet) {\n cm.execCommand(\"newlineAndIndent\");\n return;\n }\n if (emptyListRE.test(line)) {\n var endOfQuote = inQuote && />\\s*$/.test(line)\n var endOfList = !/>\\s*$/.test(line)\n if (endOfQuote || endOfList) cm.replaceRange(\"\", {\n line: pos.line, ch: 0\n }, {\n line: pos.line, ch: pos.ch + 1\n });\n replacements[i] = \"\\n\";\n } else {\n var indent = match[1], after = match[5];\n var numbered = !(unorderedListRE.test(match[2]) || match[2].indexOf(\">\") >= 0);\n var bullet = numbered ? (parseInt(match[3], 10) + 1) + match[4] : match[2].replace(\"x\", \" \");\n replacements[i] = \"\\n\" + indent + bullet + after;\n\n if (numbered) incrementRemainingMarkdownListNumbers(cm, pos);\n }\n }\n\n cm.replaceSelections(replacements);\n };\n\n // Auto-updating Markdown list numbers when a new item is added to the\n // middle of a list\n function incrementRemainingMarkdownListNumbers(cm, pos) {\n var startLine = pos.line, lookAhead = 0, skipCount = 0;\n var startItem = listRE.exec(cm.getLine(startLine)), startIndent = startItem[1];\n\n do {\n lookAhead += 1;\n var nextLineNumber = startLine + lookAhead;\n var nextLine = cm.getLine(nextLineNumber), nextItem = listRE.exec(nextLine);\n\n if (nextItem) {\n var nextIndent = nextItem[1];\n var newNumber = (parseInt(startItem[3], 10) + lookAhead - skipCount);\n var nextNumber = (parseInt(nextItem[3], 10)), itemNumber = nextNumber;\n\n if (startIndent === nextIndent && !isNaN(nextNumber)) {\n if (newNumber === nextNumber) itemNumber = nextNumber + 1;\n if (newNumber > nextNumber) itemNumber = newNumber + 1;\n cm.replaceRange(\n nextLine.replace(listRE, nextIndent + itemNumber + nextItem[4] + nextItem[5]),\n {\n line: nextLineNumber, ch: 0\n }, {\n line: nextLineNumber, ch: nextLine.length\n });\n } else {\n if (startIndent.length > nextIndent.length) return;\n // This doesn't run if the next line immediately indents, as it is\n // not clear of the users intention (new indented item or same level)\n if ((startIndent.length < nextIndent.length) && (lookAhead === 1)) return;\n skipCount += 1;\n }\n }\n } while (nextItem);\n }\n});\n", "// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: http://codemirror.net/LICENSE\n\nvar CodeMirror = require('codemirror');\n\nCodeMirror.commands.tabAndIndentMarkdownList = function (cm) {\n var ranges = cm.listSelections();\n var pos = ranges[0].head;\n var eolState = cm.getStateAfter(pos.line);\n var inList = eolState.list !== false;\n\n if (inList) {\n cm.execCommand('indentMore');\n return;\n }\n\n if (cm.options.indentWithTabs) {\n cm.execCommand('insertTab');\n } else {\n var spaces = Array(cm.options.tabSize + 1).join(' ');\n cm.replaceSelection(spaces);\n }\n};\n\nCodeMirror.commands.shiftTabAndUnindentMarkdownList = function (cm) {\n var ranges = cm.listSelections();\n var pos = ranges[0].head;\n var eolState = cm.getStateAfter(pos.line);\n var inList = eolState.list !== false;\n\n if (inList) {\n cm.execCommand('indentLess');\n return;\n }\n\n if (cm.options.indentWithTabs) {\n cm.execCommand('insertTab');\n } else {\n var spaces = Array(cm.options.tabSize + 1).join(' ');\n cm.replaceSelection(spaces);\n }\n};\n", "// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/5/LICENSE\n\n(function(mod) {\n if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n mod(require(\"../../lib/codemirror\"));\n else if (typeof define == \"function\" && define.amd) // AMD\n define([\"../../lib/codemirror\"], mod);\n else // Plain browser env\n mod(CodeMirror);\n})(function(CodeMirror) {\n \"use strict\";\n\n CodeMirror.defineOption(\"fullScreen\", false, function(cm, val, old) {\n if (old == CodeMirror.Init) old = false;\n if (!old == !val) return;\n if (val) setFullscreen(cm);\n else setNormal(cm);\n });\n\n function setFullscreen(cm) {\n var wrap = cm.getWrapperElement();\n cm.state.fullScreenRestore = {scrollTop: window.pageYOffset, scrollLeft: window.pageXOffset,\n width: wrap.style.width, height: wrap.style.height};\n wrap.style.width = \"\";\n wrap.style.height = \"auto\";\n wrap.className += \" CodeMirror-fullscreen\";\n document.documentElement.style.overflow = \"hidden\";\n cm.refresh();\n }\n\n function setNormal(cm) {\n var wrap = cm.getWrapperElement();\n wrap.className = wrap.className.replace(/\\s*CodeMirror-fullscreen\\b/, \"\");\n document.documentElement.style.overflow = \"\";\n var info = cm.state.fullScreenRestore;\n wrap.style.width = info.width; wrap.style.height = info.height;\n window.scrollTo(info.scrollLeft, info.scrollTop);\n cm.refresh();\n }\n});\n", "// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/5/LICENSE\n\n(function(mod) {\n if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n mod(require(\"../../lib/codemirror\"));\n else if (typeof define == \"function\" && define.amd) // AMD\n define([\"../../lib/codemirror\"], mod);\n else // Plain browser env\n mod(CodeMirror);\n})(function(CodeMirror) {\n CodeMirror.defineOption(\"placeholder\", \"\", function(cm, val, old) {\n var prev = old && old != CodeMirror.Init;\n if (val && !prev) {\n cm.on(\"blur\", onBlur);\n cm.on(\"change\", onChange);\n cm.on(\"swapDoc\", onChange);\n CodeMirror.on(cm.getInputField(), \"compositionupdate\", cm.state.placeholderCompose = function() { onComposition(cm) })\n onChange(cm);\n } else if (!val && prev) {\n cm.off(\"blur\", onBlur);\n cm.off(\"change\", onChange);\n cm.off(\"swapDoc\", onChange);\n CodeMirror.off(cm.getInputField(), \"compositionupdate\", cm.state.placeholderCompose)\n clearPlaceholder(cm);\n var wrapper = cm.getWrapperElement();\n wrapper.className = wrapper.className.replace(\" CodeMirror-empty\", \"\");\n }\n\n if (val && !cm.hasFocus()) onBlur(cm);\n });\n\n function clearPlaceholder(cm) {\n if (cm.state.placeholder) {\n cm.state.placeholder.parentNode.removeChild(cm.state.placeholder);\n cm.state.placeholder = null;\n }\n }\n function setPlaceholder(cm) {\n clearPlaceholder(cm);\n var elt = cm.state.placeholder = document.createElement(\"pre\");\n elt.style.cssText = \"height: 0; overflow: visible\";\n elt.style.direction = cm.getOption(\"direction\");\n elt.className = \"CodeMirror-placeholder CodeMirror-line-like\";\n var placeHolder = cm.getOption(\"placeholder\")\n if (typeof placeHolder == \"string\") placeHolder = document.createTextNode(placeHolder)\n elt.appendChild(placeHolder)\n cm.display.lineSpace.insertBefore(elt, cm.display.lineSpace.firstChild);\n }\n\n function onComposition(cm) {\n setTimeout(function() {\n var empty = false\n if (cm.lineCount() == 1) {\n var input = cm.getInputField()\n empty = input.nodeName == \"TEXTAREA\" ? !cm.getLine(0).length\n : !/[^\\u200b]/.test(input.querySelector(\".CodeMirror-line\").textContent)\n }\n if (empty) setPlaceholder(cm)\n else clearPlaceholder(cm)\n }, 20)\n }\n\n function onBlur(cm) {\n if (isEmpty(cm)) setPlaceholder(cm);\n }\n function onChange(cm) {\n var wrapper = cm.getWrapperElement(), empty = isEmpty(cm);\n wrapper.className = wrapper.className.replace(\" CodeMirror-empty\", \"\") + (empty ? \" CodeMirror-empty\" : \"\");\n\n if (empty) setPlaceholder(cm);\n else clearPlaceholder(cm);\n }\n\n function isEmpty(cm) {\n return (cm.lineCount() === 1) && (cm.getLine(0) === \"\");\n }\n});\n", "// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/5/LICENSE\n\n(function(mod) {\n if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n mod(require(\"../../lib/codemirror\"))\n else if (typeof define == \"function\" && define.amd) // AMD\n define([\"../../lib/codemirror\"], mod)\n else // Plain browser env\n mod(CodeMirror)\n})(function(CodeMirror) {\n \"use strict\"\n\n CodeMirror.defineOption(\"autoRefresh\", false, function(cm, val) {\n if (cm.state.autoRefresh) {\n stopListening(cm, cm.state.autoRefresh)\n cm.state.autoRefresh = null\n }\n if (val && cm.display.wrapper.offsetHeight == 0)\n startListening(cm, cm.state.autoRefresh = {delay: val.delay || 250})\n })\n\n function startListening(cm, state) {\n function check() {\n if (cm.display.wrapper.offsetHeight) {\n stopListening(cm, state)\n if (cm.display.lastWrapHeight != cm.display.wrapper.clientHeight)\n cm.refresh()\n } else {\n state.timeout = setTimeout(check, state.delay)\n }\n }\n state.timeout = setTimeout(check, state.delay)\n state.hurry = function() {\n clearTimeout(state.timeout)\n state.timeout = setTimeout(check, 50)\n }\n CodeMirror.on(window, \"mouseup\", state.hurry)\n CodeMirror.on(window, \"keyup\", state.hurry)\n }\n\n function stopListening(_cm, state) {\n clearTimeout(state.timeout)\n CodeMirror.off(window, \"mouseup\", state.hurry)\n CodeMirror.off(window, \"keyup\", state.hurry)\n }\n});\n", "// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/5/LICENSE\n\n// Because sometimes you need to mark the selected *text*.\n//\n// Adds an option 'styleSelectedText' which, when enabled, gives\n// selected text the CSS class given as option value, or\n// \"CodeMirror-selectedtext\" when the value is not a string.\n\n(function(mod) {\n if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n mod(require(\"../../lib/codemirror\"));\n else if (typeof define == \"function\" && define.amd) // AMD\n define([\"../../lib/codemirror\"], mod);\n else // Plain browser env\n mod(CodeMirror);\n})(function(CodeMirror) {\n \"use strict\";\n\n CodeMirror.defineOption(\"styleSelectedText\", false, function(cm, val, old) {\n var prev = old && old != CodeMirror.Init;\n if (val && !prev) {\n cm.state.markedSelection = [];\n cm.state.markedSelectionStyle = typeof val == \"string\" ? val : \"CodeMirror-selectedtext\";\n reset(cm);\n cm.on(\"cursorActivity\", onCursorActivity);\n cm.on(\"change\", onChange);\n } else if (!val && prev) {\n cm.off(\"cursorActivity\", onCursorActivity);\n cm.off(\"change\", onChange);\n clear(cm);\n cm.state.markedSelection = cm.state.markedSelectionStyle = null;\n }\n });\n\n function onCursorActivity(cm) {\n if (cm.state.markedSelection)\n cm.operation(function() { update(cm); });\n }\n\n function onChange(cm) {\n if (cm.state.markedSelection && cm.state.markedSelection.length)\n cm.operation(function() { clear(cm); });\n }\n\n var CHUNK_SIZE = 8;\n var Pos = CodeMirror.Pos;\n var cmp = CodeMirror.cmpPos;\n\n function coverRange(cm, from, to, addAt) {\n if (cmp(from, to) == 0) return;\n var array = cm.state.markedSelection;\n var cls = cm.state.markedSelectionStyle;\n for (var line = from.line;;) {\n var start = line == from.line ? from : Pos(line, 0);\n var endLine = line + CHUNK_SIZE, atEnd = endLine >= to.line;\n var end = atEnd ? to : Pos(endLine, 0);\n var mark = cm.markText(start, end, {className: cls});\n if (addAt == null) array.push(mark);\n else array.splice(addAt++, 0, mark);\n if (atEnd) break;\n line = endLine;\n }\n }\n\n function clear(cm) {\n var array = cm.state.markedSelection;\n for (var i = 0; i < array.length; ++i) array[i].clear();\n array.length = 0;\n }\n\n function reset(cm) {\n clear(cm);\n var ranges = cm.listSelections();\n for (var i = 0; i < ranges.length; i++)\n coverRange(cm, ranges[i].from(), ranges[i].to());\n }\n\n function update(cm) {\n if (!cm.somethingSelected()) return clear(cm);\n if (cm.listSelections().length > 1) return reset(cm);\n\n var from = cm.getCursor(\"start\"), to = cm.getCursor(\"end\");\n\n var array = cm.state.markedSelection;\n if (!array.length) return coverRange(cm, from, to);\n\n var coverStart = array[0].find(), coverEnd = array[array.length - 1].find();\n if (!coverStart || !coverEnd || to.line - from.line <= CHUNK_SIZE ||\n cmp(from, coverEnd.to) >= 0 || cmp(to, coverStart.from) <= 0)\n return reset(cm);\n\n while (cmp(from, coverStart.from) > 0) {\n array.shift().clear();\n coverStart = array[0].find();\n }\n if (cmp(from, coverStart.from) < 0) {\n if (coverStart.to.line - from.line < CHUNK_SIZE) {\n array.shift().clear();\n coverRange(cm, from, coverStart.to, 0);\n } else {\n coverRange(cm, from, coverStart.from, 0);\n }\n }\n\n while (cmp(to, coverEnd.to) < 0) {\n array.pop().clear();\n coverEnd = array[array.length - 1].find();\n }\n if (cmp(to, coverEnd.to) > 0) {\n if (to.line - coverEnd.from.line < CHUNK_SIZE) {\n array.pop().clear();\n coverRange(cm, coverEnd.from, to);\n } else {\n coverRange(cm, coverEnd.to, to);\n }\n }\n }\n});\n", "// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/5/LICENSE\n\n(function(mod) {\n if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n mod(require(\"../../lib/codemirror\"))\n else if (typeof define == \"function\" && define.amd) // AMD\n define([\"../../lib/codemirror\"], mod)\n else // Plain browser env\n mod(CodeMirror)\n})(function(CodeMirror) {\n \"use strict\"\n var Pos = CodeMirror.Pos\n\n function regexpFlags(regexp) {\n var flags = regexp.flags\n return flags != null ? flags : (regexp.ignoreCase ? \"i\" : \"\")\n + (regexp.global ? \"g\" : \"\")\n + (regexp.multiline ? \"m\" : \"\")\n }\n\n function ensureFlags(regexp, flags) {\n var current = regexpFlags(regexp), target = current\n for (var i = 0; i < flags.length; i++) if (target.indexOf(flags.charAt(i)) == -1)\n target += flags.charAt(i)\n return current == target ? regexp : new RegExp(regexp.source, target)\n }\n\n function maybeMultiline(regexp) {\n return /\\\\s|\\\\n|\\n|\\\\W|\\\\D|\\[\\^/.test(regexp.source)\n }\n\n function searchRegexpForward(doc, regexp, start) {\n regexp = ensureFlags(regexp, \"g\")\n for (var line = start.line, ch = start.ch, last = doc.lastLine(); line <= last; line++, ch = 0) {\n regexp.lastIndex = ch\n var string = doc.getLine(line), match = regexp.exec(string)\n if (match)\n return {from: Pos(line, match.index),\n to: Pos(line, match.index + match[0].length),\n match: match}\n }\n }\n\n function searchRegexpForwardMultiline(doc, regexp, start) {\n if (!maybeMultiline(regexp)) return searchRegexpForward(doc, regexp, start)\n\n regexp = ensureFlags(regexp, \"gm\")\n var string, chunk = 1\n for (var line = start.line, last = doc.lastLine(); line <= last;) {\n // This grows the search buffer in exponentially-sized chunks\n // between matches, so that nearby matches are fast and don't\n // require concatenating the whole document (in case we're\n // searching for something that has tons of matches), but at the\n // same time, the amount of retries is limited.\n for (var i = 0; i < chunk; i++) {\n if (line > last) break\n var curLine = doc.getLine(line++)\n string = string == null ? curLine : string + \"\\n\" + curLine\n }\n chunk = chunk * 2\n regexp.lastIndex = start.ch\n var match = regexp.exec(string)\n if (match) {\n var before = string.slice(0, match.index).split(\"\\n\"), inside = match[0].split(\"\\n\")\n var startLine = start.line + before.length - 1, startCh = before[before.length - 1].length\n return {from: Pos(startLine, startCh),\n to: Pos(startLine + inside.length - 1,\n inside.length == 1 ? startCh + inside[0].length : inside[inside.length - 1].length),\n match: match}\n }\n }\n }\n\n function lastMatchIn(string, regexp, endMargin) {\n var match, from = 0\n while (from <= string.length) {\n regexp.lastIndex = from\n var newMatch = regexp.exec(string)\n if (!newMatch) break\n var end = newMatch.index + newMatch[0].length\n if (end > string.length - endMargin) break\n if (!match || end > match.index + match[0].length)\n match = newMatch\n from = newMatch.index + 1\n }\n return match\n }\n\n function searchRegexpBackward(doc, regexp, start) {\n regexp = ensureFlags(regexp, \"g\")\n for (var line = start.line, ch = start.ch, first = doc.firstLine(); line >= first; line--, ch = -1) {\n var string = doc.getLine(line)\n var match = lastMatchIn(string, regexp, ch < 0 ? 0 : string.length - ch)\n if (match)\n return {from: Pos(line, match.index),\n to: Pos(line, match.index + match[0].length),\n match: match}\n }\n }\n\n function searchRegexpBackwardMultiline(doc, regexp, start) {\n if (!maybeMultiline(regexp)) return searchRegexpBackward(doc, regexp, start)\n regexp = ensureFlags(regexp, \"gm\")\n var string, chunkSize = 1, endMargin = doc.getLine(start.line).length - start.ch\n for (var line = start.line, first = doc.firstLine(); line >= first;) {\n for (var i = 0; i < chunkSize && line >= first; i++) {\n var curLine = doc.getLine(line--)\n string = string == null ? curLine : curLine + \"\\n\" + string\n }\n chunkSize *= 2\n\n var match = lastMatchIn(string, regexp, endMargin)\n if (match) {\n var before = string.slice(0, match.index).split(\"\\n\"), inside = match[0].split(\"\\n\")\n var startLine = line + before.length, startCh = before[before.length - 1].length\n return {from: Pos(startLine, startCh),\n to: Pos(startLine + inside.length - 1,\n inside.length == 1 ? startCh + inside[0].length : inside[inside.length - 1].length),\n match: match}\n }\n }\n }\n\n var doFold, noFold\n if (String.prototype.normalize) {\n doFold = function(str) { return str.normalize(\"NFD\").toLowerCase() }\n noFold = function(str) { return str.normalize(\"NFD\") }\n } else {\n doFold = function(str) { return str.toLowerCase() }\n noFold = function(str) { return str }\n }\n\n // Maps a position in a case-folded line back to a position in the original line\n // (compensating for codepoints increasing in number during folding)\n function adjustPos(orig, folded, pos, foldFunc) {\n if (orig.length == folded.length) return pos\n for (var min = 0, max = pos + Math.max(0, orig.length - folded.length);;) {\n if (min == max) return min\n var mid = (min + max) >> 1\n var len = foldFunc(orig.slice(0, mid)).length\n if (len == pos) return mid\n else if (len > pos) max = mid\n else min = mid + 1\n }\n }\n\n function searchStringForward(doc, query, start, caseFold) {\n // Empty string would match anything and never progress, so we\n // define it to match nothing instead.\n if (!query.length) return null\n var fold = caseFold ? doFold : noFold\n var lines = fold(query).split(/\\r|\\n\\r?/)\n\n search: for (var line = start.line, ch = start.ch, last = doc.lastLine() + 1 - lines.length; line <= last; line++, ch = 0) {\n var orig = doc.getLine(line).slice(ch), string = fold(orig)\n if (lines.length == 1) {\n var found = string.indexOf(lines[0])\n if (found == -1) continue search\n var start = adjustPos(orig, string, found, fold) + ch\n return {from: Pos(line, adjustPos(orig, string, found, fold) + ch),\n to: Pos(line, adjustPos(orig, string, found + lines[0].length, fold) + ch)}\n } else {\n var cutFrom = string.length - lines[0].length\n if (string.slice(cutFrom) != lines[0]) continue search\n for (var i = 1; i < lines.length - 1; i++)\n if (fold(doc.getLine(line + i)) != lines[i]) continue search\n var end = doc.getLine(line + lines.length - 1), endString = fold(end), lastLine = lines[lines.length - 1]\n if (endString.slice(0, lastLine.length) != lastLine) continue search\n return {from: Pos(line, adjustPos(orig, string, cutFrom, fold) + ch),\n to: Pos(line + lines.length - 1, adjustPos(end, endString, lastLine.length, fold))}\n }\n }\n }\n\n function searchStringBackward(doc, query, start, caseFold) {\n if (!query.length) return null\n var fold = caseFold ? doFold : noFold\n var lines = fold(query).split(/\\r|\\n\\r?/)\n\n search: for (var line = start.line, ch = start.ch, first = doc.firstLine() - 1 + lines.length; line >= first; line--, ch = -1) {\n var orig = doc.getLine(line)\n if (ch > -1) orig = orig.slice(0, ch)\n var string = fold(orig)\n if (lines.length == 1) {\n var found = string.lastIndexOf(lines[0])\n if (found == -1) continue search\n return {from: Pos(line, adjustPos(orig, string, found, fold)),\n to: Pos(line, adjustPos(orig, string, found + lines[0].length, fold))}\n } else {\n var lastLine = lines[lines.length - 1]\n if (string.slice(0, lastLine.length) != lastLine) continue search\n for (var i = 1, start = line - lines.length + 1; i < lines.length - 1; i++)\n if (fold(doc.getLine(start + i)) != lines[i]) continue search\n var top = doc.getLine(line + 1 - lines.length), topString = fold(top)\n if (topString.slice(topString.length - lines[0].length) != lines[0]) continue search\n return {from: Pos(line + 1 - lines.length, adjustPos(top, topString, top.length - lines[0].length, fold)),\n to: Pos(line, adjustPos(orig, string, lastLine.length, fold))}\n }\n }\n }\n\n function SearchCursor(doc, query, pos, options) {\n this.atOccurrence = false\n this.afterEmptyMatch = false\n this.doc = doc\n pos = pos ? doc.clipPos(pos) : Pos(0, 0)\n this.pos = {from: pos, to: pos}\n\n var caseFold\n if (typeof options == \"object\") {\n caseFold = options.caseFold\n } else { // Backwards compat for when caseFold was the 4th argument\n caseFold = options\n options = null\n }\n\n if (typeof query == \"string\") {\n if (caseFold == null) caseFold = false\n this.matches = function(reverse, pos) {\n return (reverse ? searchStringBackward : searchStringForward)(doc, query, pos, caseFold)\n }\n } else {\n query = ensureFlags(query, \"gm\")\n if (!options || options.multiline !== false)\n this.matches = function(reverse, pos) {\n return (reverse ? searchRegexpBackwardMultiline : searchRegexpForwardMultiline)(doc, query, pos)\n }\n else\n this.matches = function(reverse, pos) {\n return (reverse ? searchRegexpBackward : searchRegexpForward)(doc, query, pos)\n }\n }\n }\n\n SearchCursor.prototype = {\n findNext: function() {return this.find(false)},\n findPrevious: function() {return this.find(true)},\n\n find: function(reverse) {\n var head = this.doc.clipPos(reverse ? this.pos.from : this.pos.to);\n if (this.afterEmptyMatch && this.atOccurrence) {\n // do not return the same 0 width match twice\n head = Pos(head.line, head.ch)\n if (reverse) {\n head.ch--;\n if (head.ch < 0) {\n head.line--;\n head.ch = (this.doc.getLine(head.line) || \"\").length;\n }\n } else {\n head.ch++;\n if (head.ch > (this.doc.getLine(head.line) || \"\").length) {\n head.ch = 0;\n head.line++;\n }\n }\n if (CodeMirror.cmpPos(head, this.doc.clipPos(head)) != 0) {\n return this.atOccurrence = false\n }\n }\n var result = this.matches(reverse, head)\n this.afterEmptyMatch = result && CodeMirror.cmpPos(result.from, result.to) == 0\n\n if (result) {\n this.pos = result\n this.atOccurrence = true\n return this.pos.match || true\n } else {\n var end = Pos(reverse ? this.doc.firstLine() : this.doc.lastLine() + 1, 0)\n this.pos = {from: end, to: end}\n return this.atOccurrence = false\n }\n },\n\n from: function() {if (this.atOccurrence) return this.pos.from},\n to: function() {if (this.atOccurrence) return this.pos.to},\n\n replace: function(newText, origin) {\n if (!this.atOccurrence) return\n var lines = CodeMirror.splitLines(newText)\n this.doc.replaceRange(lines, this.pos.from, this.pos.to, origin)\n this.pos.to = Pos(this.pos.from.line + lines.length - 1,\n lines[lines.length - 1].length + (lines.length == 1 ? this.pos.from.ch : 0))\n }\n }\n\n CodeMirror.defineExtension(\"getSearchCursor\", function(query, pos, caseFold) {\n return new SearchCursor(this.doc, query, pos, caseFold)\n })\n CodeMirror.defineDocExtension(\"getSearchCursor\", function(query, pos, caseFold) {\n return new SearchCursor(this, query, pos, caseFold)\n })\n\n CodeMirror.defineExtension(\"selectMatches\", function(query, caseFold) {\n var ranges = []\n var cur = this.getSearchCursor(query, this.getCursor(\"from\"), caseFold)\n while (cur.findNext()) {\n if (CodeMirror.cmpPos(cur.to(), this.getCursor(\"to\")) > 0) break\n ranges.push({anchor: cur.from(), head: cur.to()})\n }\n if (ranges.length)\n this.setSelections(ranges, 0)\n })\n});\n", "// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/5/LICENSE\n\n(function(mod) {\n if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n mod(require(\"../../lib/codemirror\"), require(\"../markdown/markdown\"), require(\"../../addon/mode/overlay\"));\n else if (typeof define == \"function\" && define.amd) // AMD\n define([\"../../lib/codemirror\", \"../markdown/markdown\", \"../../addon/mode/overlay\"], mod);\n else // Plain browser env\n mod(CodeMirror);\n})(function(CodeMirror) {\n\"use strict\";\n\nvar urlRE = /^((?:(?:aaas?|about|acap|adiumxtra|af[ps]|aim|apt|attachment|aw|beshare|bitcoin|bolo|callto|cap|chrome(?:-extension)?|cid|coap|com-eventbrite-attendee|content|crid|cvs|data|dav|dict|dlna-(?:playcontainer|playsingle)|dns|doi|dtn|dvb|ed2k|facetime|feed|file|finger|fish|ftp|geo|gg|git|gizmoproject|go|gopher|gtalk|h323|hcp|https?|iax|icap|icon|im|imap|info|ipn|ipp|irc[6s]?|iris(?:\\.beep|\\.lwz|\\.xpc|\\.xpcs)?|itms|jar|javascript|jms|keyparc|lastfm|ldaps?|magnet|mailto|maps|market|message|mid|mms|ms-help|msnim|msrps?|mtqp|mumble|mupdate|mvn|news|nfs|nih?|nntp|notes|oid|opaquelocktoken|palm|paparazzi|platform|pop|pres|proxy|psyc|query|res(?:ource)?|rmi|rsync|rtmp|rtsp|secondlife|service|session|sftp|sgn|shttp|sieve|sips?|skype|sm[bs]|snmp|soap\\.beeps?|soldat|spotify|ssh|steam|svn|tag|teamspeak|tel(?:net)?|tftp|things|thismessage|tip|tn3270|tv|udp|unreal|urn|ut2004|vemmi|ventrilo|view-source|webcal|wss?|wtai|wyciwyg|xcon(?:-userid)?|xfire|xmlrpc\\.beeps?|xmpp|xri|ymsgr|z39\\.50[rs]?):(?:\\/{1,3}|[a-z0-9%])|www\\d{0,3}[.]|[a-z0-9.\\-]+[.][a-z]{2,4}\\/)(?:[^\\s()<>]|\\([^\\s()<>]*\\))+(?:\\([^\\s()<>]*\\)|[^\\s`*!()\\[\\]{};:'\".,<>?\u00AB\u00BB\u201C\u201D\u2018\u2019]))/i\n\nCodeMirror.defineMode(\"gfm\", function(config, modeConfig) {\n var codeDepth = 0;\n function blankLine(state) {\n state.code = false;\n return null;\n }\n var gfmOverlay = {\n startState: function() {\n return {\n code: false,\n codeBlock: false,\n ateSpace: false\n };\n },\n copyState: function(s) {\n return {\n code: s.code,\n codeBlock: s.codeBlock,\n ateSpace: s.ateSpace\n };\n },\n token: function(stream, state) {\n state.combineTokens = null;\n\n // Hack to prevent formatting override inside code blocks (block and inline)\n if (state.codeBlock) {\n if (stream.match(/^```+/)) {\n state.codeBlock = false;\n return null;\n }\n stream.skipToEnd();\n return null;\n }\n if (stream.sol()) {\n state.code = false;\n }\n if (stream.sol() && stream.match(/^```+/)) {\n stream.skipToEnd();\n state.codeBlock = true;\n return null;\n }\n // If this block is changed, it may need to be updated in Markdown mode\n if (stream.peek() === '`') {\n stream.next();\n var before = stream.pos;\n stream.eatWhile('`');\n var difference = 1 + stream.pos - before;\n if (!state.code) {\n codeDepth = difference;\n state.code = true;\n } else {\n if (difference === codeDepth) { // Must be exact\n state.code = false;\n }\n }\n return null;\n } else if (state.code) {\n stream.next();\n return null;\n }\n // Check if space. If so, links can be formatted later on\n if (stream.eatSpace()) {\n state.ateSpace = true;\n return null;\n }\n if (stream.sol() || state.ateSpace) {\n state.ateSpace = false;\n if (modeConfig.gitHubSpice !== false) {\n if(stream.match(/^(?:[a-zA-Z0-9\\-_]+\\/)?(?:[a-zA-Z0-9\\-_]+@)?(?=.{0,6}\\d)(?:[a-f0-9]{7,40}\\b)/)) {\n // User/Project@SHA\n // User@SHA\n // SHA\n state.combineTokens = true;\n return \"link\";\n } else if (stream.match(/^(?:[a-zA-Z0-9\\-_]+\\/)?(?:[a-zA-Z0-9\\-_]+)?#[0-9]+\\b/)) {\n // User/Project#Num\n // User#Num\n // #Num\n state.combineTokens = true;\n return \"link\";\n }\n }\n }\n if (stream.match(urlRE) &&\n stream.string.slice(stream.start - 2, stream.start) != \"](\" &&\n (stream.start == 0 || /\\W/.test(stream.string.charAt(stream.start - 1)))) {\n // URLs\n // Taken from http://daringfireball.net/2010/07/improved_regex_for_matching_urls\n // And then (issue #1160) simplified to make it not crash the Chrome Regexp engine\n // And then limited url schemes to the CommonMark list, so foo:bar isn't matched as a URL\n state.combineTokens = true;\n return \"link\";\n }\n stream.next();\n return null;\n },\n blankLine: blankLine\n };\n\n var markdownConfig = {\n taskLists: true,\n strikethrough: true,\n emoji: true\n };\n for (var attr in modeConfig) {\n markdownConfig[attr] = modeConfig[attr];\n }\n markdownConfig.name = \"markdown\";\n return CodeMirror.overlayMode(CodeMirror.getMode(config, markdownConfig), gfmOverlay);\n\n}, \"markdown\");\n\n CodeMirror.defineMIME(\"text/x-gfm\", \"gfm\");\n});\n", "/* globals chrome: false */\n/* globals __dirname: false */\n/* globals require: false */\n/* globals Buffer: false */\n/* globals module: false */\n/**\n * Typo is a JavaScript implementation of a spellchecker using hunspell-style\n * dictionaries.\n */\nvar Typo;\n(function () {\n \"use strict\";\n /**\n * Typo constructor.\n *\n * @param {string} [dictionary] The locale code of the dictionary being used. e.g.,\n * \"en_US\". This is only used to auto-load dictionaries.\n * @param {string} [affData] The data from the dictionary's .aff file. If omitted\n * and Typo.js is being used in a Chrome extension, the .aff\n * file will be loaded automatically from\n * lib/typo/dictionaries/[dictionary]/[dictionary].aff\n * In other environments, it will be loaded from\n * [settings.dictionaryPath]/dictionaries/[dictionary]/[dictionary].aff\n * @param {string} [wordsData] The data from the dictionary's .dic file. If omitted\n * and Typo.js is being used in a Chrome extension, the .dic\n * file will be loaded automatically from\n * lib/typo/dictionaries/[dictionary]/[dictionary].dic\n * In other environments, it will be loaded from\n * [settings.dictionaryPath]/dictionaries/[dictionary]/[dictionary].dic\n * @param {Object} [settings] Constructor settings. Available properties are:\n * {string} [dictionaryPath]: path to load dictionary from in non-chrome\n * environment.\n * {Object} [flags]: flag information.\n * {boolean} [asyncLoad]: If true, affData and wordsData will be loaded\n * asynchronously.\n * {Function} [loadedCallback]: Called when both affData and wordsData\n * have been loaded. Only used if asyncLoad is set to true. The parameter\n * is the instantiated Typo object.\n *\n * @returns {Typo} A Typo object.\n */\n Typo = function (dictionary, affData, wordsData, settings) {\n settings = settings || {};\n this.dictionary = null;\n this.rules = {};\n this.dictionaryTable = {};\n this.compoundRules = [];\n this.compoundRuleCodes = {};\n this.replacementTable = [];\n this.flags = settings.flags || {};\n this.memoized = {};\n this.loaded = false;\n var self = this;\n var path;\n // Loop-control variables.\n var i, j, _len, _jlen;\n if (dictionary) {\n self.dictionary = dictionary;\n // If the data is preloaded, just setup the Typo object.\n if (affData && wordsData) {\n setup();\n }\n // Loading data for browser extentions.\n else if (typeof window !== 'undefined' && ((window.chrome && window.chrome.runtime) || (window.browser && window.browser.runtime))) {\n var runtime = window.chrome && window.chrome.runtime ? window.chrome.runtime : window.browser.runtime;\n if (settings.dictionaryPath) {\n path = settings.dictionaryPath;\n }\n else {\n path = \"typo/dictionaries\";\n }\n if (!affData)\n readDataFile(runtime.getURL(path + \"/\" + dictionary + \"/\" + dictionary + \".aff\"), setAffData);\n if (!wordsData)\n readDataFile(runtime.getURL(path + \"/\" + dictionary + \"/\" + dictionary + \".dic\"), setWordsData);\n }\n // Loading data for Node.js or other environments.\n else {\n if (settings.dictionaryPath) {\n path = settings.dictionaryPath;\n }\n else if (typeof __dirname !== 'undefined') {\n path = __dirname + '/dictionaries';\n }\n else {\n path = './dictionaries';\n }\n if (!affData)\n readDataFile(path + \"/\" + dictionary + \"/\" + dictionary + \".aff\", setAffData);\n if (!wordsData)\n readDataFile(path + \"/\" + dictionary + \"/\" + dictionary + \".dic\", setWordsData);\n }\n }\n function readDataFile(url, setFunc) {\n var response = self._readFile(url, null, settings === null || settings === void 0 ? void 0 : settings.asyncLoad);\n if (settings === null || settings === void 0 ? void 0 : settings.asyncLoad) {\n response.then(function (data) {\n setFunc(data);\n });\n }\n else {\n setFunc(response);\n }\n }\n function setAffData(data) {\n affData = data;\n if (wordsData) {\n setup();\n }\n }\n function setWordsData(data) {\n wordsData = data;\n if (affData) {\n setup();\n }\n }\n function setup() {\n self.rules = self._parseAFF(affData);\n // Save the rule codes that are used in compound rules.\n self.compoundRuleCodes = {};\n for (i = 0, _len = self.compoundRules.length; i < _len; i++) {\n var rule = self.compoundRules[i];\n for (j = 0, _jlen = rule.length; j < _jlen; j++) {\n self.compoundRuleCodes[rule[j]] = [];\n }\n }\n // If we add this ONLYINCOMPOUND flag to self.compoundRuleCodes, then _parseDIC\n // will do the work of saving the list of words that are compound-only.\n if (\"ONLYINCOMPOUND\" in self.flags) {\n self.compoundRuleCodes[self.flags.ONLYINCOMPOUND] = [];\n }\n self.dictionaryTable = self._parseDIC(wordsData);\n // Get rid of any codes from the compound rule codes that are never used\n // (or that were special regex characters). Not especially necessary...\n for (i in self.compoundRuleCodes) {\n if (self.compoundRuleCodes[i].length === 0) {\n delete self.compoundRuleCodes[i];\n }\n }\n // Build the full regular expressions for each compound rule.\n // I have a feeling (but no confirmation yet) that this method of\n // testing for compound words is probably slow.\n for (i = 0, _len = self.compoundRules.length; i < _len; i++) {\n var ruleText = self.compoundRules[i];\n var expressionText = \"\";\n for (j = 0, _jlen = ruleText.length; j < _jlen; j++) {\n var character = ruleText[j];\n if (character in self.compoundRuleCodes) {\n expressionText += \"(\" + self.compoundRuleCodes[character].join(\"|\") + \")\";\n }\n else {\n expressionText += character;\n }\n }\n self.compoundRules[i] = new RegExp('^' + expressionText + '$', \"i\");\n }\n self.loaded = true;\n if ((settings === null || settings === void 0 ? void 0 : settings.asyncLoad) && (settings === null || settings === void 0 ? void 0 : settings.loadedCallback)) {\n settings.loadedCallback(self);\n }\n }\n return this;\n };\n Typo.prototype = {\n /**\n * Loads a Typo instance from a hash of all of the Typo properties.\n *\n * @param {object} obj A hash of Typo properties, probably gotten from a JSON.parse(JSON.stringify(typo_instance)).\n */\n load: function (obj) {\n for (var i in obj) {\n if (obj.hasOwnProperty(i)) {\n this[i] = obj[i];\n }\n }\n return this;\n },\n /**\n * Read the contents of a file.\n *\n * @param {string} path The path (relative) to the file.\n * @param {string} [charset=\"ISO8859-1\"] The expected charset of the file\n * @param {boolean} async If true, the file will be read asynchronously. For node.js this does nothing, all\n * files are read synchronously.\n * @returns {string} The file data if async is false, otherwise a promise object. If running node.js, the data is\n * always returned.\n */\n _readFile: function (path, charset, async) {\n var _a;\n charset = charset || \"utf8\";\n if (typeof XMLHttpRequest !== 'undefined') {\n var req_1 = new XMLHttpRequest();\n req_1.open(\"GET\", path, !!async);\n (_a = req_1.overrideMimeType) === null || _a === void 0 ? void 0 : _a.call(req_1, \"text/plain; charset=\" + charset);\n if (!!async) {\n var promise = new Promise(function (resolve, reject) {\n req_1.onload = function () {\n if (req_1.status === 200) {\n resolve(req_1.responseText);\n }\n else {\n reject(req_1.statusText);\n }\n };\n req_1.onerror = function () {\n reject(req_1.statusText);\n };\n });\n req_1.send(null);\n return promise;\n }\n else {\n req_1.send(null);\n return req_1.responseText;\n }\n }\n else if (typeof require !== 'undefined') {\n // Node.js\n var fs = require(\"fs\");\n try {\n if (fs.existsSync(path)) {\n return fs.readFileSync(path, charset);\n }\n else {\n console.log(\"Path \" + path + \" does not exist.\");\n }\n }\n catch (e) {\n console.log(e);\n }\n return '';\n }\n return '';\n },\n /**\n * Parse the rules out from a .aff file.\n *\n * @param {string} data The contents of the affix file.\n * @returns object The rules from the file.\n */\n _parseAFF: function (data) {\n var rules = {};\n var line, subline, numEntries, lineParts;\n var i, j, _len, _jlen;\n var lines = data.split(/\\r?\\n/);\n for (i = 0, _len = lines.length; i < _len; i++) {\n // Remove comment lines\n line = this._removeAffixComments(lines[i]);\n line = line.trim();\n if (!line) {\n continue;\n }\n var definitionParts = line.split(/\\s+/);\n var ruleType = definitionParts[0];\n if (ruleType === \"PFX\" || ruleType === \"SFX\") {\n var ruleCode = definitionParts[1];\n var combineable = definitionParts[2];\n numEntries = parseInt(definitionParts[3], 10);\n var entries = [];\n for (j = i + 1, _jlen = i + 1 + numEntries; j < _jlen; j++) {\n subline = lines[j];\n lineParts = subline.split(/\\s+/);\n var charactersToRemove = lineParts[2];\n var additionParts = lineParts[3].split(\"/\");\n var charactersToAdd = additionParts[0];\n if (charactersToAdd === \"0\")\n charactersToAdd = \"\";\n var continuationClasses = this.parseRuleCodes(additionParts[1]);\n var regexToMatch = lineParts[4];\n var entry = {\n add: charactersToAdd\n };\n if (continuationClasses.length > 0)\n entry.continuationClasses = continuationClasses;\n if (regexToMatch !== \".\") {\n if (ruleType === \"SFX\") {\n entry.match = new RegExp(regexToMatch + \"$\");\n }\n else {\n entry.match = new RegExp(\"^\" + regexToMatch);\n }\n }\n if (charactersToRemove != \"0\") {\n if (ruleType === \"SFX\") {\n entry.remove = new RegExp(charactersToRemove + \"$\");\n }\n else {\n entry.remove = charactersToRemove;\n }\n }\n entries.push(entry);\n }\n rules[ruleCode] = { \"type\": ruleType, \"combineable\": (combineable === \"Y\"), \"entries\": entries };\n i += numEntries;\n }\n else if (ruleType === \"COMPOUNDRULE\") {\n numEntries = parseInt(definitionParts[1], 10);\n for (j = i + 1, _jlen = i + 1 + numEntries; j < _jlen; j++) {\n line = lines[j];\n lineParts = line.split(/\\s+/);\n this.compoundRules.push(lineParts[1]);\n }\n i += numEntries;\n }\n else if (ruleType === \"REP\") {\n lineParts = line.split(/\\s+/);\n if (lineParts.length === 3) {\n this.replacementTable.push([lineParts[1], lineParts[2]]);\n }\n }\n else {\n // ONLYINCOMPOUND\n // COMPOUNDMIN\n // FLAG\n // KEEPCASE\n // NEEDAFFIX\n this.flags[ruleType] = definitionParts[1];\n }\n }\n return rules;\n },\n /**\n * Removes comments.\n *\n * @param {string} data A line from an affix file.\n * @return {string} The cleaned-up line.\n */\n _removeAffixComments: function (line) {\n // This used to remove any string starting with '#' up to the end of the line,\n // but some COMPOUNDRULE definitions include '#' as part of the rule.\n // So, only remove lines that begin with a comment, optionally preceded by whitespace.\n if (line.match(/^\\s*#/)) {\n return '';\n }\n return line;\n },\n /**\n * Parses the words out from the .dic file.\n *\n * @param {string} data The data from the dictionary file.\n * @returns HashMap The lookup table containing all of the words and\n * word forms from the dictionary.\n */\n _parseDIC: function (data) {\n data = this._removeDicComments(data);\n var lines = data.split(/\\r?\\n/);\n var dictionaryTable = {};\n function addWord(word, rules) {\n // Some dictionaries will list the same word multiple times with different rule sets.\n if (!dictionaryTable.hasOwnProperty(word)) {\n dictionaryTable[word] = null;\n }\n if (rules.length > 0) {\n if (dictionaryTable[word] === null) {\n dictionaryTable[word] = [];\n }\n dictionaryTable[word].push(rules);\n }\n }\n // The first line is the number of words in the dictionary.\n for (var i = 1, _len = lines.length; i < _len; i++) {\n var line = lines[i];\n if (!line) {\n // Ignore empty lines.\n continue;\n }\n // The line format is one of:\n // word\n // word/flags\n // word/flags xx:abc yy:def\n // word xx:abc yy:def\n // We don't use the morphological flags (xx:abc, yy:def) and we don't want them included\n // in the extracted flags.\n var just_word_and_flags = line.replace(/\\s.*$/, '');\n // just_word_and_flags is definitely one of:\n // word\n // word/flags\n var parts = just_word_and_flags.split('/', 2);\n var word = parts[0];\n // Now for each affix rule, generate that form of the word.\n if (parts.length > 1) {\n var ruleCodesArray = this.parseRuleCodes(parts[1]);\n // Save the ruleCodes for compound word situations.\n if (!(\"NEEDAFFIX\" in this.flags) || ruleCodesArray.indexOf(this.flags.NEEDAFFIX) === -1) {\n addWord(word, ruleCodesArray);\n }\n for (var j = 0, _jlen = ruleCodesArray.length; j < _jlen; j++) {\n var code = ruleCodesArray[j];\n var rule = this.rules[code];\n if (rule) {\n var newWords = this._applyRule(word, rule);\n for (var ii = 0, _iilen = newWords.length; ii < _iilen; ii++) {\n var newWord = newWords[ii];\n addWord(newWord, []);\n if (rule.combineable) {\n for (var k = j + 1; k < _jlen; k++) {\n var combineCode = ruleCodesArray[k];\n var combineRule = this.rules[combineCode];\n if (combineRule) {\n if (combineRule.combineable && (rule.type != combineRule.type)) {\n var otherNewWords = this._applyRule(newWord, combineRule);\n for (var iii = 0, _iiilen = otherNewWords.length; iii < _iiilen; iii++) {\n var otherNewWord = otherNewWords[iii];\n addWord(otherNewWord, []);\n }\n }\n }\n }\n }\n }\n }\n if (code in this.compoundRuleCodes) {\n this.compoundRuleCodes[code].push(word);\n }\n }\n }\n else {\n addWord(word.trim(), []);\n }\n }\n return dictionaryTable;\n },\n /**\n * Removes comment lines and then cleans up blank lines and trailing whitespace.\n *\n * @param {string} data The data from a .dic file.\n * @return {string} The cleaned-up data.\n */\n _removeDicComments: function (data) {\n // I can't find any official documentation on it, but at least the de_DE\n // dictionary uses tab-indented lines as comments.\n // Remove comments\n data = data.replace(/^\\t.*$/mg, \"\");\n return data;\n },\n parseRuleCodes: function (textCodes) {\n if (!textCodes) {\n return [];\n }\n else if (!(\"FLAG\" in this.flags)) {\n // The flag symbols are single characters\n return textCodes.split(\"\");\n }\n else if (this.flags.FLAG === \"long\") {\n // The flag symbols are two characters long.\n var flags = [];\n for (var i = 0, _len = textCodes.length; i < _len; i += 2) {\n flags.push(textCodes.substr(i, 2));\n }\n return flags;\n }\n else if (this.flags.FLAG === \"num\") {\n // The flag symbols are a CSV list of numbers.\n return textCodes.split(\",\");\n }\n else if (this.flags.FLAG === \"UTF-8\") {\n // The flags are single UTF-8 characters.\n // @see https://github.com/cfinke/Typo.js/issues/57\n return Array.from(textCodes);\n }\n else {\n // It's possible that this fallback case will not work for all FLAG values,\n // but I think it's more likely to work than not returning anything at all.\n return textCodes.split(\"\");\n }\n },\n /**\n * Applies an affix rule to a word.\n *\n * @param {string} word The base word.\n * @param {Object} rule The affix rule.\n * @returns {string[]} The new words generated by the rule.\n */\n _applyRule: function (word, rule) {\n var entries = rule.entries;\n var newWords = [];\n for (var i = 0, _len = entries.length; i < _len; i++) {\n var entry = entries[i];\n if (!entry.match || word.match(entry.match)) {\n var newWord = word;\n if (entry.remove) {\n newWord = newWord.replace(entry.remove, \"\");\n }\n if (rule.type === \"SFX\") {\n newWord = newWord + entry.add;\n }\n else {\n newWord = entry.add + newWord;\n }\n newWords.push(newWord);\n if (\"continuationClasses\" in entry) {\n for (var j = 0, _jlen = entry.continuationClasses.length; j < _jlen; j++) {\n var continuationRule = this.rules[entry.continuationClasses[j]];\n if (continuationRule) {\n newWords = newWords.concat(this._applyRule(newWord, continuationRule));\n }\n /*\n else {\n // This shouldn't happen, but it does, at least in the de_DE dictionary.\n // I think the author mistakenly supplied lower-case rule codes instead\n // of upper-case.\n }\n */\n }\n }\n }\n }\n return newWords;\n },\n /**\n * Checks whether a word or a capitalization variant exists in the current dictionary.\n * The word is trimmed and several variations of capitalizations are checked.\n * If you want to check a word without any changes made to it, call checkExact()\n *\n * @see http://blog.stevenlevithan.com/archives/faster-trim-javascript re:trimming function\n *\n * @param {string} aWord The word to check.\n * @returns {boolean}\n */\n check: function (aWord) {\n if (!this.loaded) {\n throw \"Dictionary not loaded.\";\n }\n if (!aWord) {\n return false;\n }\n // Remove leading and trailing whitespace\n var trimmedWord = aWord.replace(/^\\s\\s*/, '').replace(/\\s\\s*$/, '');\n if (this.checkExact(trimmedWord)) {\n return true;\n }\n // The exact word is not in the dictionary.\n if (trimmedWord.toUpperCase() === trimmedWord) {\n // The word was supplied in all uppercase.\n // Check for a capitalized form of the word.\n var capitalizedWord = trimmedWord[0] + trimmedWord.substring(1).toLowerCase();\n if (this.hasFlag(capitalizedWord, \"KEEPCASE\")) {\n // Capitalization variants are not allowed for this word.\n return false;\n }\n if (this.checkExact(capitalizedWord)) {\n // The all-caps word is a capitalized word spelled correctly.\n return true;\n }\n if (this.checkExact(trimmedWord.toLowerCase())) {\n // The all-caps is a lowercase word spelled correctly.\n return true;\n }\n }\n var uncapitalizedWord = trimmedWord[0].toLowerCase() + trimmedWord.substring(1);\n if (uncapitalizedWord !== trimmedWord) {\n if (this.hasFlag(uncapitalizedWord, \"KEEPCASE\")) {\n // Capitalization variants are not allowed for this word.\n return false;\n }\n // Check for an uncapitalized form\n if (this.checkExact(uncapitalizedWord)) {\n // The word is spelled correctly but with the first letter capitalized.\n return true;\n }\n }\n return false;\n },\n /**\n * Checks whether a word exists in the current dictionary.\n *\n * @param {string} word The word to check.\n * @returns {boolean}\n */\n checkExact: function (word) {\n if (!this.loaded) {\n throw \"Dictionary not loaded.\";\n }\n var ruleCodes = this.dictionaryTable[word];\n var i, _len;\n if (typeof ruleCodes === 'undefined') {\n // Check if this might be a compound word.\n if (\"COMPOUNDMIN\" in this.flags && word.length >= this.flags.COMPOUNDMIN) {\n for (i = 0, _len = this.compoundRules.length; i < _len; i++) {\n if (word.match(this.compoundRules[i])) {\n return true;\n }\n }\n }\n }\n else if (ruleCodes === null) {\n // a null (but not undefined) value for an entry in the dictionary table\n // means that the word is in the dictionary but has no flags.\n return true;\n }\n else if (typeof ruleCodes === 'object') { // this.dictionary['hasOwnProperty'] will be a function.\n for (i = 0, _len = ruleCodes.length; i < _len; i++) {\n if (!this.hasFlag(word, \"ONLYINCOMPOUND\", ruleCodes[i])) {\n return true;\n }\n }\n }\n return false;\n },\n /**\n * Looks up whether a given word is flagged with a given flag.\n *\n * @param {string} word The word in question.\n * @param {string} flag The flag in question.\n * @return {boolean}\n */\n hasFlag: function (word, flag, wordFlags) {\n if (!this.loaded) {\n throw \"Dictionary not loaded.\";\n }\n if (flag in this.flags) {\n if (typeof wordFlags === 'undefined') {\n wordFlags = Array.prototype.concat.apply([], this.dictionaryTable[word]);\n }\n if (wordFlags && wordFlags.indexOf(this.flags[flag]) !== -1) {\n return true;\n }\n }\n return false;\n },\n /**\n * Returns a list of suggestions for a misspelled word.\n *\n * @see http://www.norvig.com/spell-correct.html for the basis of this suggestor.\n * This suggestor is primitive, but it works.\n *\n * @param {string} word The misspelling.\n * @param {number} [limit=5] The maximum number of suggestions to return.\n * @returns {string[]} The array of suggestions.\n */\n alphabet: \"\",\n suggest: function (word, limit) {\n if (!this.loaded) {\n throw \"Dictionary not loaded.\";\n }\n limit = limit || 5;\n if (this.memoized.hasOwnProperty(word)) {\n var memoizedLimit = this.memoized[word]['limit'];\n // Only return the cached list if it's big enough or if there weren't enough suggestions\n // to fill a smaller limit.\n if (limit <= memoizedLimit || this.memoized[word]['suggestions'].length < memoizedLimit) {\n return this.memoized[word]['suggestions'].slice(0, limit);\n }\n }\n if (this.check(word))\n return [];\n // Check the replacement table.\n for (var i = 0, _len = this.replacementTable.length; i < _len; i++) {\n var replacementEntry = this.replacementTable[i];\n if (word.indexOf(replacementEntry[0]) !== -1) {\n var correctedWord = word.replace(replacementEntry[0], replacementEntry[1]);\n if (this.check(correctedWord)) {\n return [correctedWord];\n }\n }\n }\n if (!this.alphabet) {\n // Use the English alphabet as the default. Problematic, but backwards-compatible.\n this.alphabet = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';\n // Any characters defined in the affix file as substitutions can go in the alphabet too.\n // Note that dictionaries do not include the entire alphabet in the TRY flag when it's there.\n // For example, Q is not in the default English TRY list; that's why having the default\n // alphabet above is useful.\n if ('TRY' in this.flags) {\n this.alphabet += this.flags['TRY'];\n }\n // Plus any additional characters specifically defined as being allowed in words.\n if ('WORDCHARS' in this.flags) {\n this.alphabet += this.flags['WORDCHARS'];\n }\n // Remove any duplicates.\n var alphaArray = this.alphabet.split(\"\");\n alphaArray.sort();\n var alphaHash = {};\n for (var i = 0; i < alphaArray.length; i++) {\n alphaHash[alphaArray[i]] = true;\n }\n this.alphabet = '';\n for (var i in alphaHash) {\n this.alphabet += i;\n }\n }\n var self = this;\n /**\n * Returns a hash keyed by all of the strings that can be made by making a single edit to the word (or words in) `words`\n * The value of each entry is the number of unique ways that the resulting word can be made.\n *\n * @arg HashMap words A hash keyed by words (all with the value `true` to make lookups very quick).\n * @arg boolean known_only Whether this function should ignore strings that are not in the dictionary.\n */\n function edits1(words, known_only) {\n var rv = {};\n var i, j, _iilen, _len, _jlen, _edit;\n var alphabetLength = self.alphabet.length;\n for (var word_1 in words) {\n for (i = 0, _len = word_1.length + 1; i < _len; i++) {\n var s = [word_1.substring(0, i), word_1.substring(i)];\n // Remove a letter.\n if (s[1]) {\n _edit = s[0] + s[1].substring(1);\n if (!known_only || self.check(_edit)) {\n if (!(_edit in rv)) {\n rv[_edit] = 1;\n }\n else {\n rv[_edit] += 1;\n }\n }\n }\n // Transpose letters\n // Eliminate transpositions of identical letters\n if (s[1].length > 1 && s[1][1] !== s[1][0]) {\n _edit = s[0] + s[1][1] + s[1][0] + s[1].substring(2);\n if (!known_only || self.check(_edit)) {\n if (!(_edit in rv)) {\n rv[_edit] = 1;\n }\n else {\n rv[_edit] += 1;\n }\n }\n }\n if (s[1]) {\n // Replace a letter with another letter.\n var lettercase = (s[1].substring(0, 1).toUpperCase() === s[1].substring(0, 1)) ? 'uppercase' : 'lowercase';\n for (j = 0; j < alphabetLength; j++) {\n var replacementLetter = self.alphabet[j];\n // Set the case of the replacement letter to the same as the letter being replaced.\n if ('uppercase' === lettercase) {\n replacementLetter = replacementLetter.toUpperCase();\n }\n // Eliminate replacement of a letter by itself\n if (replacementLetter != s[1].substring(0, 1)) {\n _edit = s[0] + replacementLetter + s[1].substring(1);\n if (!known_only || self.check(_edit)) {\n if (!(_edit in rv)) {\n rv[_edit] = 1;\n }\n else {\n rv[_edit] += 1;\n }\n }\n }\n }\n }\n if (s[1]) {\n // Add a letter between each letter.\n for (j = 0; j < alphabetLength; j++) {\n // If the letters on each side are capitalized, capitalize the replacement.\n var lettercase = (s[0].substring(-1).toUpperCase() === s[0].substring(-1) && s[1].substring(0, 1).toUpperCase() === s[1].substring(0, 1)) ? 'uppercase' : 'lowercase';\n var replacementLetter = self.alphabet[j];\n if ('uppercase' === lettercase) {\n replacementLetter = replacementLetter.toUpperCase();\n }\n _edit = s[0] + replacementLetter + s[1];\n if (!known_only || self.check(_edit)) {\n if (!(_edit in rv)) {\n rv[_edit] = 1;\n }\n else {\n rv[_edit] += 1;\n }\n }\n }\n }\n }\n }\n return rv;\n }\n function correct(word) {\n var _a;\n // Get the edit-distance-1 and edit-distance-2 forms of this word.\n var ed1 = edits1((_a = {}, _a[word] = true, _a));\n var ed2 = edits1(ed1, true);\n // Sort the edits based on how many different ways they were created.\n var weighted_corrections = ed2;\n for (var ed1word in ed1) {\n if (!self.check(ed1word)) {\n continue;\n }\n if (ed1word in weighted_corrections) {\n weighted_corrections[ed1word] += ed1[ed1word];\n }\n else {\n weighted_corrections[ed1word] = ed1[ed1word];\n }\n }\n var i, _len;\n var sorted_corrections = [];\n for (i in weighted_corrections) {\n if (weighted_corrections.hasOwnProperty(i)) {\n if (self.hasFlag(i, \"PRIORITYSUGGEST\")) {\n // We've defined a new affix rule called PRIORITYSUGGEST, indicating that\n // if this word is in the suggestions list for a misspelled word, it should\n // be given priority over other suggestions.\n //\n // Add a large number to its weight to push it to the top of the list.\n // If multiple priority suggestions are in the list, they'll still be ranked\n // against each other, but they'll all be above non-priority suggestions.\n weighted_corrections[i] += 1000;\n }\n sorted_corrections.push([i, weighted_corrections[i]]);\n }\n }\n function sorter(a, b) {\n var a_val = a[1];\n var b_val = b[1];\n if (a_val < b_val) {\n return -1;\n }\n else if (a_val > b_val) {\n return 1;\n }\n // @todo If a and b are equally weighted, add our own weight based on something like the key locations on this language's default keyboard.\n return b[0].localeCompare(a[0]);\n }\n sorted_corrections.sort(sorter).reverse();\n var rv = [];\n var capitalization_scheme = \"lowercase\";\n if (word.toUpperCase() === word) {\n capitalization_scheme = \"uppercase\";\n }\n else if (word.substr(0, 1).toUpperCase() + word.substr(1).toLowerCase() === word) {\n capitalization_scheme = \"capitalized\";\n }\n var working_limit = limit;\n for (i = 0; i < Math.min(working_limit, sorted_corrections.length); i++) {\n if (\"uppercase\" === capitalization_scheme) {\n sorted_corrections[i][0] = sorted_corrections[i][0].toUpperCase();\n }\n else if (\"capitalized\" === capitalization_scheme) {\n sorted_corrections[i][0] = sorted_corrections[i][0].substr(0, 1).toUpperCase() + sorted_corrections[i][0].substr(1);\n }\n if (!self.hasFlag(sorted_corrections[i][0], \"NOSUGGEST\") && rv.indexOf(sorted_corrections[i][0]) === -1) {\n rv.push(sorted_corrections[i][0]);\n }\n else {\n // If one of the corrections is not eligible as a suggestion , make sure we still return the right number of suggestions.\n working_limit++;\n }\n }\n return rv;\n }\n this.memoized[word] = {\n 'suggestions': correct(word),\n 'limit': limit\n };\n return this.memoized[word]['suggestions'];\n }\n };\n})();\n// Support for use as a node.js module.\nif (typeof module !== 'undefined') {\n module.exports = Typo;\n}\n", "// Use strict mode (https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Strict_mode)\n\"use strict\";\n\n\n// Requires\nvar Typo = require(\"typo-js\");\n\n\n// Create function\nfunction CodeMirrorSpellChecker(options) {\n\t// Initialize\n\toptions = options || {};\n\n\n\t// Verify\n\tif(typeof options.codeMirrorInstance !== \"function\" || typeof options.codeMirrorInstance.defineMode !== \"function\") {\n\t\tconsole.log(\"CodeMirror Spell Checker: You must provide an instance of CodeMirror via the option `codeMirrorInstance`\");\n\t\treturn;\n\t}\n\n\n\t// Because some browsers don't support this functionality yet\n\tif(!String.prototype.includes) {\n\t\tString.prototype.includes = function() {\n\t\t\t\"use strict\";\n\t\t\treturn String.prototype.indexOf.apply(this, arguments) !== -1;\n\t\t};\n\t}\n\n\n\t// Define the new mode\n\toptions.codeMirrorInstance.defineMode(\"spell-checker\", function(config) {\n\t\t// Load AFF/DIC data\n\t\tif(!CodeMirrorSpellChecker.aff_loading) {\n\t\t\tCodeMirrorSpellChecker.aff_loading = true;\n\t\t\tvar xhr_aff = new XMLHttpRequest();\n\t\t\txhr_aff.open(\"GET\", \"https://cdn.jsdelivr.net/codemirror.spell-checker/latest/en_US.aff\", true);\n\t\t\txhr_aff.onload = function() {\n\t\t\t\tif(xhr_aff.readyState === 4 && xhr_aff.status === 200) {\n\t\t\t\t\tCodeMirrorSpellChecker.aff_data = xhr_aff.responseText;\n\t\t\t\t\tCodeMirrorSpellChecker.num_loaded++;\n\n\t\t\t\t\tif(CodeMirrorSpellChecker.num_loaded == 2) {\n\t\t\t\t\t\tCodeMirrorSpellChecker.typo = new Typo(\"en_US\", CodeMirrorSpellChecker.aff_data, CodeMirrorSpellChecker.dic_data, {\n\t\t\t\t\t\t\tplatform: \"any\"\n\t\t\t\t\t\t});\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t};\n\t\t\txhr_aff.send(null);\n\t\t}\n\n\t\tif(!CodeMirrorSpellChecker.dic_loading) {\n\t\t\tCodeMirrorSpellChecker.dic_loading = true;\n\t\t\tvar xhr_dic = new XMLHttpRequest();\n\t\t\txhr_dic.open(\"GET\", \"https://cdn.jsdelivr.net/codemirror.spell-checker/latest/en_US.dic\", true);\n\t\t\txhr_dic.onload = function() {\n\t\t\t\tif(xhr_dic.readyState === 4 && xhr_dic.status === 200) {\n\t\t\t\t\tCodeMirrorSpellChecker.dic_data = xhr_dic.responseText;\n\t\t\t\t\tCodeMirrorSpellChecker.num_loaded++;\n\n\t\t\t\t\tif(CodeMirrorSpellChecker.num_loaded == 2) {\n\t\t\t\t\t\tCodeMirrorSpellChecker.typo = new Typo(\"en_US\", CodeMirrorSpellChecker.aff_data, CodeMirrorSpellChecker.dic_data, {\n\t\t\t\t\t\t\tplatform: \"any\"\n\t\t\t\t\t\t});\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t};\n\t\t\txhr_dic.send(null);\n\t\t}\n\n\n\t\t// Define what separates a word\n\t\tvar rx_word = \"!\\\"#$%&()*+,-./:;<=>?@[\\\\]^_`{|}~ \";\n\n\n\t\t// Create the overlay and such\n\t\tvar overlay = {\n\t\t\ttoken: function(stream) {\n\t\t\t\tvar ch = stream.peek();\n\t\t\t\tvar word = \"\";\n\n\t\t\t\tif(rx_word.includes(ch)) {\n\t\t\t\t\tstream.next();\n\t\t\t\t\treturn null;\n\t\t\t\t}\n\n\t\t\t\twhile((ch = stream.peek()) != null && !rx_word.includes(ch)) {\n\t\t\t\t\tword += ch;\n\t\t\t\t\tstream.next();\n\t\t\t\t}\n\n\t\t\t\tif(CodeMirrorSpellChecker.typo && !CodeMirrorSpellChecker.typo.check(word))\n\t\t\t\t\treturn \"spell-error\"; // CSS class: cm-spell-error\n\n\t\t\t\treturn null;\n\t\t\t}\n\t\t};\n\n\t\tvar mode = options.codeMirrorInstance.getMode(\n\t\t\tconfig, config.backdrop || \"text/plain\"\n\t\t);\n\n\t\treturn options.codeMirrorInstance.overlayMode(mode, overlay, true);\n\t});\n}\n\n\n// Initialize data globally to reduce memory consumption\nCodeMirrorSpellChecker.num_loaded = 0;\nCodeMirrorSpellChecker.aff_loading = false;\nCodeMirrorSpellChecker.dic_loading = false;\nCodeMirrorSpellChecker.aff_data = \"\";\nCodeMirrorSpellChecker.dic_data = \"\";\nCodeMirrorSpellChecker.typo;\n\n\n// Export\nmodule.exports = CodeMirrorSpellChecker;", "/**\n * marked v4.3.0 - a markdown parser\n * Copyright (c) 2011-2023, Christopher Jeffrey. (MIT Licensed)\n * https://github.com/markedjs/marked\n */\n\n/**\n * DO NOT EDIT THIS FILE\n * The code in this file is generated from files in ./src/\n */\n\n'use strict';\n\nfunction _defineProperties(target, props) {\n for (var i = 0; i < props.length; i++) {\n var descriptor = props[i];\n descriptor.enumerable = descriptor.enumerable || false;\n descriptor.configurable = true;\n if (\"value\" in descriptor) descriptor.writable = true;\n Object.defineProperty(target, _toPropertyKey(descriptor.key), descriptor);\n }\n}\nfunction _createClass(Constructor, protoProps, staticProps) {\n if (protoProps) _defineProperties(Constructor.prototype, protoProps);\n if (staticProps) _defineProperties(Constructor, staticProps);\n Object.defineProperty(Constructor, \"prototype\", {\n writable: false\n });\n return Constructor;\n}\nfunction _extends() {\n _extends = Object.assign ? Object.assign.bind() : function (target) {\n for (var i = 1; i < arguments.length; i++) {\n var source = arguments[i];\n for (var key in source) {\n if (Object.prototype.hasOwnProperty.call(source, key)) {\n target[key] = source[key];\n }\n }\n }\n return target;\n };\n return _extends.apply(this, arguments);\n}\nfunction _unsupportedIterableToArray(o, minLen) {\n if (!o) return;\n if (typeof o === \"string\") return _arrayLikeToArray(o, minLen);\n var n = Object.prototype.toString.call(o).slice(8, -1);\n if (n === \"Object\" && o.constructor) n = o.constructor.name;\n if (n === \"Map\" || n === \"Set\") return Array.from(o);\n if (n === \"Arguments\" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen);\n}\nfunction _arrayLikeToArray(arr, len) {\n if (len == null || len > arr.length) len = arr.length;\n for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i];\n return arr2;\n}\nfunction _createForOfIteratorHelperLoose(o, allowArrayLike) {\n var it = typeof Symbol !== \"undefined\" && o[Symbol.iterator] || o[\"@@iterator\"];\n if (it) return (it = it.call(o)).next.bind(it);\n if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === \"number\") {\n if (it) o = it;\n var i = 0;\n return function () {\n if (i >= o.length) return {\n done: true\n };\n return {\n done: false,\n value: o[i++]\n };\n };\n }\n throw new TypeError(\"Invalid attempt to iterate non-iterable instance.\\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.\");\n}\nfunction _toPrimitive(input, hint) {\n if (typeof input !== \"object\" || input === null) return input;\n var prim = input[Symbol.toPrimitive];\n if (prim !== undefined) {\n var res = prim.call(input, hint || \"default\");\n if (typeof res !== \"object\") return res;\n throw new TypeError(\"@@toPrimitive must return a primitive value.\");\n }\n return (hint === \"string\" ? String : Number)(input);\n}\nfunction _toPropertyKey(arg) {\n var key = _toPrimitive(arg, \"string\");\n return typeof key === \"symbol\" ? key : String(key);\n}\n\nfunction getDefaults() {\n return {\n async: false,\n baseUrl: null,\n breaks: false,\n extensions: null,\n gfm: true,\n headerIds: true,\n headerPrefix: '',\n highlight: null,\n hooks: null,\n langPrefix: 'language-',\n mangle: true,\n pedantic: false,\n renderer: null,\n sanitize: false,\n sanitizer: null,\n silent: false,\n smartypants: false,\n tokenizer: null,\n walkTokens: null,\n xhtml: false\n };\n}\nexports.defaults = getDefaults();\nfunction changeDefaults(newDefaults) {\n exports.defaults = newDefaults;\n}\n\n/**\n * Helpers\n */\nvar escapeTest = /[&<>\"']/;\nvar escapeReplace = new RegExp(escapeTest.source, 'g');\nvar escapeTestNoEncode = /[<>\"']|&(?!(#\\d{1,7}|#[Xx][a-fA-F0-9]{1,6}|\\w+);)/;\nvar escapeReplaceNoEncode = new RegExp(escapeTestNoEncode.source, 'g');\nvar escapeReplacements = {\n '&': '&',\n '<': '<',\n '>': '>',\n '\"': '"',\n \"'\": '''\n};\nvar getEscapeReplacement = function getEscapeReplacement(ch) {\n return escapeReplacements[ch];\n};\nfunction escape(html, encode) {\n if (encode) {\n if (escapeTest.test(html)) {\n return html.replace(escapeReplace, getEscapeReplacement);\n }\n } else {\n if (escapeTestNoEncode.test(html)) {\n return html.replace(escapeReplaceNoEncode, getEscapeReplacement);\n }\n }\n return html;\n}\nvar unescapeTest = /&(#(?:\\d+)|(?:#x[0-9A-Fa-f]+)|(?:\\w+));?/ig;\n\n/**\n * @param {string} html\n */\nfunction unescape(html) {\n // explicitly match decimal, hex, and named HTML entities\n return html.replace(unescapeTest, function (_, n) {\n n = n.toLowerCase();\n if (n === 'colon') return ':';\n if (n.charAt(0) === '#') {\n return n.charAt(1) === 'x' ? String.fromCharCode(parseInt(n.substring(2), 16)) : String.fromCharCode(+n.substring(1));\n }\n return '';\n });\n}\nvar caret = /(^|[^\\[])\\^/g;\n\n/**\n * @param {string | RegExp} regex\n * @param {string} opt\n */\nfunction edit(regex, opt) {\n regex = typeof regex === 'string' ? regex : regex.source;\n opt = opt || '';\n var obj = {\n replace: function replace(name, val) {\n val = val.source || val;\n val = val.replace(caret, '$1');\n regex = regex.replace(name, val);\n return obj;\n },\n getRegex: function getRegex() {\n return new RegExp(regex, opt);\n }\n };\n return obj;\n}\nvar nonWordAndColonTest = /[^\\w:]/g;\nvar originIndependentUrl = /^$|^[a-z][a-z0-9+.-]*:|^[?#]/i;\n\n/**\n * @param {boolean} sanitize\n * @param {string} base\n * @param {string} href\n */\nfunction cleanUrl(sanitize, base, href) {\n if (sanitize) {\n var prot;\n try {\n prot = decodeURIComponent(unescape(href)).replace(nonWordAndColonTest, '').toLowerCase();\n } catch (e) {\n return null;\n }\n if (prot.indexOf('javascript:') === 0 || prot.indexOf('vbscript:') === 0 || prot.indexOf('data:') === 0) {\n return null;\n }\n }\n if (base && !originIndependentUrl.test(href)) {\n href = resolveUrl(base, href);\n }\n try {\n href = encodeURI(href).replace(/%25/g, '%');\n } catch (e) {\n return null;\n }\n return href;\n}\nvar baseUrls = {};\nvar justDomain = /^[^:]+:\\/*[^/]*$/;\nvar protocol = /^([^:]+:)[\\s\\S]*$/;\nvar domain = /^([^:]+:\\/*[^/]*)[\\s\\S]*$/;\n\n/**\n * @param {string} base\n * @param {string} href\n */\nfunction resolveUrl(base, href) {\n if (!baseUrls[' ' + base]) {\n // we can ignore everything in base after the last slash of its path component,\n // but we might need to add _that_\n // https://tools.ietf.org/html/rfc3986#section-3\n if (justDomain.test(base)) {\n baseUrls[' ' + base] = base + '/';\n } else {\n baseUrls[' ' + base] = rtrim(base, '/', true);\n }\n }\n base = baseUrls[' ' + base];\n var relativeBase = base.indexOf(':') === -1;\n if (href.substring(0, 2) === '//') {\n if (relativeBase) {\n return href;\n }\n return base.replace(protocol, '$1') + href;\n } else if (href.charAt(0) === '/') {\n if (relativeBase) {\n return href;\n }\n return base.replace(domain, '$1') + href;\n } else {\n return base + href;\n }\n}\nvar noopTest = {\n exec: function noopTest() {}\n};\nfunction splitCells(tableRow, count) {\n // ensure that every cell-delimiting pipe has a space\n // before it to distinguish it from an escaped pipe\n var row = tableRow.replace(/\\|/g, function (match, offset, str) {\n var escaped = false,\n curr = offset;\n while (--curr >= 0 && str[curr] === '\\\\') {\n escaped = !escaped;\n }\n if (escaped) {\n // odd number of slashes means | is escaped\n // so we leave it alone\n return '|';\n } else {\n // add space before unescaped |\n return ' |';\n }\n }),\n cells = row.split(/ \\|/);\n var i = 0;\n\n // First/last cell in a row cannot be empty if it has no leading/trailing pipe\n if (!cells[0].trim()) {\n cells.shift();\n }\n if (cells.length > 0 && !cells[cells.length - 1].trim()) {\n cells.pop();\n }\n if (cells.length > count) {\n cells.splice(count);\n } else {\n while (cells.length < count) {\n cells.push('');\n }\n }\n for (; i < cells.length; i++) {\n // leading or trailing whitespace is ignored per the gfm spec\n cells[i] = cells[i].trim().replace(/\\\\\\|/g, '|');\n }\n return cells;\n}\n\n/**\n * Remove trailing 'c's. Equivalent to str.replace(/c*$/, '').\n * /c*$/ is vulnerable to REDOS.\n *\n * @param {string} str\n * @param {string} c\n * @param {boolean} invert Remove suffix of non-c chars instead. Default falsey.\n */\nfunction rtrim(str, c, invert) {\n var l = str.length;\n if (l === 0) {\n return '';\n }\n\n // Length of suffix matching the invert condition.\n var suffLen = 0;\n\n // Step left until we fail to match the invert condition.\n while (suffLen < l) {\n var currChar = str.charAt(l - suffLen - 1);\n if (currChar === c && !invert) {\n suffLen++;\n } else if (currChar !== c && invert) {\n suffLen++;\n } else {\n break;\n }\n }\n return str.slice(0, l - suffLen);\n}\nfunction findClosingBracket(str, b) {\n if (str.indexOf(b[1]) === -1) {\n return -1;\n }\n var l = str.length;\n var level = 0,\n i = 0;\n for (; i < l; i++) {\n if (str[i] === '\\\\') {\n i++;\n } else if (str[i] === b[0]) {\n level++;\n } else if (str[i] === b[1]) {\n level--;\n if (level < 0) {\n return i;\n }\n }\n }\n return -1;\n}\nfunction checkSanitizeDeprecation(opt) {\n if (opt && opt.sanitize && !opt.silent) {\n console.warn('marked(): sanitize and sanitizer parameters are deprecated since version 0.7.0, should not be used and will be removed in the future. Read more here: https://marked.js.org/#/USING_ADVANCED.md#options');\n }\n}\n\n// copied from https://stackoverflow.com/a/5450113/806777\n/**\n * @param {string} pattern\n * @param {number} count\n */\nfunction repeatString(pattern, count) {\n if (count < 1) {\n return '';\n }\n var result = '';\n while (count > 1) {\n if (count & 1) {\n result += pattern;\n }\n count >>= 1;\n pattern += pattern;\n }\n return result + pattern;\n}\n\nfunction outputLink(cap, link, raw, lexer) {\n var href = link.href;\n var title = link.title ? escape(link.title) : null;\n var text = cap[1].replace(/\\\\([\\[\\]])/g, '$1');\n if (cap[0].charAt(0) !== '!') {\n lexer.state.inLink = true;\n var token = {\n type: 'link',\n raw: raw,\n href: href,\n title: title,\n text: text,\n tokens: lexer.inlineTokens(text)\n };\n lexer.state.inLink = false;\n return token;\n }\n return {\n type: 'image',\n raw: raw,\n href: href,\n title: title,\n text: escape(text)\n };\n}\nfunction indentCodeCompensation(raw, text) {\n var matchIndentToCode = raw.match(/^(\\s+)(?:```)/);\n if (matchIndentToCode === null) {\n return text;\n }\n var indentToCode = matchIndentToCode[1];\n return text.split('\\n').map(function (node) {\n var matchIndentInNode = node.match(/^\\s+/);\n if (matchIndentInNode === null) {\n return node;\n }\n var indentInNode = matchIndentInNode[0];\n if (indentInNode.length >= indentToCode.length) {\n return node.slice(indentToCode.length);\n }\n return node;\n }).join('\\n');\n}\n\n/**\n * Tokenizer\n */\nvar Tokenizer = /*#__PURE__*/function () {\n function Tokenizer(options) {\n this.options = options || exports.defaults;\n }\n var _proto = Tokenizer.prototype;\n _proto.space = function space(src) {\n var cap = this.rules.block.newline.exec(src);\n if (cap && cap[0].length > 0) {\n return {\n type: 'space',\n raw: cap[0]\n };\n }\n };\n _proto.code = function code(src) {\n var cap = this.rules.block.code.exec(src);\n if (cap) {\n var text = cap[0].replace(/^ {1,4}/gm, '');\n return {\n type: 'code',\n raw: cap[0],\n codeBlockStyle: 'indented',\n text: !this.options.pedantic ? rtrim(text, '\\n') : text\n };\n }\n };\n _proto.fences = function fences(src) {\n var cap = this.rules.block.fences.exec(src);\n if (cap) {\n var raw = cap[0];\n var text = indentCodeCompensation(raw, cap[3] || '');\n return {\n type: 'code',\n raw: raw,\n lang: cap[2] ? cap[2].trim().replace(this.rules.inline._escapes, '$1') : cap[2],\n text: text\n };\n }\n };\n _proto.heading = function heading(src) {\n var cap = this.rules.block.heading.exec(src);\n if (cap) {\n var text = cap[2].trim();\n\n // remove trailing #s\n if (/#$/.test(text)) {\n var trimmed = rtrim(text, '#');\n if (this.options.pedantic) {\n text = trimmed.trim();\n } else if (!trimmed || / $/.test(trimmed)) {\n // CommonMark requires space before trailing #s\n text = trimmed.trim();\n }\n }\n return {\n type: 'heading',\n raw: cap[0],\n depth: cap[1].length,\n text: text,\n tokens: this.lexer.inline(text)\n };\n }\n };\n _proto.hr = function hr(src) {\n var cap = this.rules.block.hr.exec(src);\n if (cap) {\n return {\n type: 'hr',\n raw: cap[0]\n };\n }\n };\n _proto.blockquote = function blockquote(src) {\n var cap = this.rules.block.blockquote.exec(src);\n if (cap) {\n var text = cap[0].replace(/^ *>[ \\t]?/gm, '');\n var top = this.lexer.state.top;\n this.lexer.state.top = true;\n var tokens = this.lexer.blockTokens(text);\n this.lexer.state.top = top;\n return {\n type: 'blockquote',\n raw: cap[0],\n tokens: tokens,\n text: text\n };\n }\n };\n _proto.list = function list(src) {\n var cap = this.rules.block.list.exec(src);\n if (cap) {\n var raw, istask, ischecked, indent, i, blankLine, endsWithBlankLine, line, nextLine, rawLine, itemContents, endEarly;\n var bull = cap[1].trim();\n var isordered = bull.length > 1;\n var list = {\n type: 'list',\n raw: '',\n ordered: isordered,\n start: isordered ? +bull.slice(0, -1) : '',\n loose: false,\n items: []\n };\n bull = isordered ? \"\\\\d{1,9}\\\\\" + bull.slice(-1) : \"\\\\\" + bull;\n if (this.options.pedantic) {\n bull = isordered ? bull : '[*+-]';\n }\n\n // Get next list item\n var itemRegex = new RegExp(\"^( {0,3}\" + bull + \")((?:[\\t ][^\\\\n]*)?(?:\\\\n|$))\");\n\n // Check if current bullet point can start a new List Item\n while (src) {\n endEarly = false;\n if (!(cap = itemRegex.exec(src))) {\n break;\n }\n if (this.rules.block.hr.test(src)) {\n // End list if bullet was actually HR (possibly move into itemRegex?)\n break;\n }\n raw = cap[0];\n src = src.substring(raw.length);\n line = cap[2].split('\\n', 1)[0].replace(/^\\t+/, function (t) {\n return ' '.repeat(3 * t.length);\n });\n nextLine = src.split('\\n', 1)[0];\n if (this.options.pedantic) {\n indent = 2;\n itemContents = line.trimLeft();\n } else {\n indent = cap[2].search(/[^ ]/); // Find first non-space char\n indent = indent > 4 ? 1 : indent; // Treat indented code blocks (> 4 spaces) as having only 1 indent\n itemContents = line.slice(indent);\n indent += cap[1].length;\n }\n blankLine = false;\n if (!line && /^ *$/.test(nextLine)) {\n // Items begin with at most one blank line\n raw += nextLine + '\\n';\n src = src.substring(nextLine.length + 1);\n endEarly = true;\n }\n if (!endEarly) {\n var nextBulletRegex = new RegExp(\"^ {0,\" + Math.min(3, indent - 1) + \"}(?:[*+-]|\\\\d{1,9}[.)])((?:[ \\t][^\\\\n]*)?(?:\\\\n|$))\");\n var hrRegex = new RegExp(\"^ {0,\" + Math.min(3, indent - 1) + \"}((?:- *){3,}|(?:_ *){3,}|(?:\\\\* *){3,})(?:\\\\n+|$)\");\n var fencesBeginRegex = new RegExp(\"^ {0,\" + Math.min(3, indent - 1) + \"}(?:```|~~~)\");\n var headingBeginRegex = new RegExp(\"^ {0,\" + Math.min(3, indent - 1) + \"}#\");\n\n // Check if following lines should be included in List Item\n while (src) {\n rawLine = src.split('\\n', 1)[0];\n nextLine = rawLine;\n\n // Re-align to follow commonmark nesting rules\n if (this.options.pedantic) {\n nextLine = nextLine.replace(/^ {1,4}(?=( {4})*[^ ])/g, ' ');\n }\n\n // End list item if found code fences\n if (fencesBeginRegex.test(nextLine)) {\n break;\n }\n\n // End list item if found start of new heading\n if (headingBeginRegex.test(nextLine)) {\n break;\n }\n\n // End list item if found start of new bullet\n if (nextBulletRegex.test(nextLine)) {\n break;\n }\n\n // Horizontal rule found\n if (hrRegex.test(src)) {\n break;\n }\n if (nextLine.search(/[^ ]/) >= indent || !nextLine.trim()) {\n // Dedent if possible\n itemContents += '\\n' + nextLine.slice(indent);\n } else {\n // not enough indentation\n if (blankLine) {\n break;\n }\n\n // paragraph continuation unless last line was a different block level element\n if (line.search(/[^ ]/) >= 4) {\n // indented code block\n break;\n }\n if (fencesBeginRegex.test(line)) {\n break;\n }\n if (headingBeginRegex.test(line)) {\n break;\n }\n if (hrRegex.test(line)) {\n break;\n }\n itemContents += '\\n' + nextLine;\n }\n if (!blankLine && !nextLine.trim()) {\n // Check if current line is blank\n blankLine = true;\n }\n raw += rawLine + '\\n';\n src = src.substring(rawLine.length + 1);\n line = nextLine.slice(indent);\n }\n }\n if (!list.loose) {\n // If the previous item ended with a blank line, the list is loose\n if (endsWithBlankLine) {\n list.loose = true;\n } else if (/\\n *\\n *$/.test(raw)) {\n endsWithBlankLine = true;\n }\n }\n\n // Check for task list items\n if (this.options.gfm) {\n istask = /^\\[[ xX]\\] /.exec(itemContents);\n if (istask) {\n ischecked = istask[0] !== '[ ] ';\n itemContents = itemContents.replace(/^\\[[ xX]\\] +/, '');\n }\n }\n list.items.push({\n type: 'list_item',\n raw: raw,\n task: !!istask,\n checked: ischecked,\n loose: false,\n text: itemContents\n });\n list.raw += raw;\n }\n\n // Do not consume newlines at end of final item. Alternatively, make itemRegex *start* with any newlines to simplify/speed up endsWithBlankLine logic\n list.items[list.items.length - 1].raw = raw.trimRight();\n list.items[list.items.length - 1].text = itemContents.trimRight();\n list.raw = list.raw.trimRight();\n var l = list.items.length;\n\n // Item child tokens handled here at end because we needed to have the final item to trim it first\n for (i = 0; i < l; i++) {\n this.lexer.state.top = false;\n list.items[i].tokens = this.lexer.blockTokens(list.items[i].text, []);\n if (!list.loose) {\n // Check if list should be loose\n var spacers = list.items[i].tokens.filter(function (t) {\n return t.type === 'space';\n });\n var hasMultipleLineBreaks = spacers.length > 0 && spacers.some(function (t) {\n return /\\n.*\\n/.test(t.raw);\n });\n list.loose = hasMultipleLineBreaks;\n }\n }\n\n // Set all items to loose if list is loose\n if (list.loose) {\n for (i = 0; i < l; i++) {\n list.items[i].loose = true;\n }\n }\n return list;\n }\n };\n _proto.html = function html(src) {\n var cap = this.rules.block.html.exec(src);\n if (cap) {\n var token = {\n type: 'html',\n raw: cap[0],\n pre: !this.options.sanitizer && (cap[1] === 'pre' || cap[1] === 'script' || cap[1] === 'style'),\n text: cap[0]\n };\n if (this.options.sanitize) {\n var text = this.options.sanitizer ? this.options.sanitizer(cap[0]) : escape(cap[0]);\n token.type = 'paragraph';\n token.text = text;\n token.tokens = this.lexer.inline(text);\n }\n return token;\n }\n };\n _proto.def = function def(src) {\n var cap = this.rules.block.def.exec(src);\n if (cap) {\n var tag = cap[1].toLowerCase().replace(/\\s+/g, ' ');\n var href = cap[2] ? cap[2].replace(/^<(.*)>$/, '$1').replace(this.rules.inline._escapes, '$1') : '';\n var title = cap[3] ? cap[3].substring(1, cap[3].length - 1).replace(this.rules.inline._escapes, '$1') : cap[3];\n return {\n type: 'def',\n tag: tag,\n raw: cap[0],\n href: href,\n title: title\n };\n }\n };\n _proto.table = function table(src) {\n var cap = this.rules.block.table.exec(src);\n if (cap) {\n var item = {\n type: 'table',\n header: splitCells(cap[1]).map(function (c) {\n return {\n text: c\n };\n }),\n align: cap[2].replace(/^ *|\\| *$/g, '').split(/ *\\| */),\n rows: cap[3] && cap[3].trim() ? cap[3].replace(/\\n[ \\t]*$/, '').split('\\n') : []\n };\n if (item.header.length === item.align.length) {\n item.raw = cap[0];\n var l = item.align.length;\n var i, j, k, row;\n for (i = 0; i < l; i++) {\n if (/^ *-+: *$/.test(item.align[i])) {\n item.align[i] = 'right';\n } else if (/^ *:-+: *$/.test(item.align[i])) {\n item.align[i] = 'center';\n } else if (/^ *:-+ *$/.test(item.align[i])) {\n item.align[i] = 'left';\n } else {\n item.align[i] = null;\n }\n }\n l = item.rows.length;\n for (i = 0; i < l; i++) {\n item.rows[i] = splitCells(item.rows[i], item.header.length).map(function (c) {\n return {\n text: c\n };\n });\n }\n\n // parse child tokens inside headers and cells\n\n // header child tokens\n l = item.header.length;\n for (j = 0; j < l; j++) {\n item.header[j].tokens = this.lexer.inline(item.header[j].text);\n }\n\n // cell child tokens\n l = item.rows.length;\n for (j = 0; j < l; j++) {\n row = item.rows[j];\n for (k = 0; k < row.length; k++) {\n row[k].tokens = this.lexer.inline(row[k].text);\n }\n }\n return item;\n }\n }\n };\n _proto.lheading = function lheading(src) {\n var cap = this.rules.block.lheading.exec(src);\n if (cap) {\n return {\n type: 'heading',\n raw: cap[0],\n depth: cap[2].charAt(0) === '=' ? 1 : 2,\n text: cap[1],\n tokens: this.lexer.inline(cap[1])\n };\n }\n };\n _proto.paragraph = function paragraph(src) {\n var cap = this.rules.block.paragraph.exec(src);\n if (cap) {\n var text = cap[1].charAt(cap[1].length - 1) === '\\n' ? cap[1].slice(0, -1) : cap[1];\n return {\n type: 'paragraph',\n raw: cap[0],\n text: text,\n tokens: this.lexer.inline(text)\n };\n }\n };\n _proto.text = function text(src) {\n var cap = this.rules.block.text.exec(src);\n if (cap) {\n return {\n type: 'text',\n raw: cap[0],\n text: cap[0],\n tokens: this.lexer.inline(cap[0])\n };\n }\n };\n _proto.escape = function escape$1(src) {\n var cap = this.rules.inline.escape.exec(src);\n if (cap) {\n return {\n type: 'escape',\n raw: cap[0],\n text: escape(cap[1])\n };\n }\n };\n _proto.tag = function tag(src) {\n var cap = this.rules.inline.tag.exec(src);\n if (cap) {\n if (!this.lexer.state.inLink && /^/i.test(cap[0])) {\n this.lexer.state.inLink = false;\n }\n if (!this.lexer.state.inRawBlock && /^<(pre|code|kbd|script)(\\s|>)/i.test(cap[0])) {\n this.lexer.state.inRawBlock = true;\n } else if (this.lexer.state.inRawBlock && /^<\\/(pre|code|kbd|script)(\\s|>)/i.test(cap[0])) {\n this.lexer.state.inRawBlock = false;\n }\n return {\n type: this.options.sanitize ? 'text' : 'html',\n raw: cap[0],\n inLink: this.lexer.state.inLink,\n inRawBlock: this.lexer.state.inRawBlock,\n text: this.options.sanitize ? this.options.sanitizer ? this.options.sanitizer(cap[0]) : escape(cap[0]) : cap[0]\n };\n }\n };\n _proto.link = function link(src) {\n var cap = this.rules.inline.link.exec(src);\n if (cap) {\n var trimmedUrl = cap[2].trim();\n if (!this.options.pedantic && /^$/.test(trimmedUrl)) {\n return;\n }\n\n // ending angle bracket cannot be escaped\n var rtrimSlash = rtrim(trimmedUrl.slice(0, -1), '\\\\');\n if ((trimmedUrl.length - rtrimSlash.length) % 2 === 0) {\n return;\n }\n } else {\n // find closing parenthesis\n var lastParenIndex = findClosingBracket(cap[2], '()');\n if (lastParenIndex > -1) {\n var start = cap[0].indexOf('!') === 0 ? 5 : 4;\n var linkLen = start + cap[1].length + lastParenIndex;\n cap[2] = cap[2].substring(0, lastParenIndex);\n cap[0] = cap[0].substring(0, linkLen).trim();\n cap[3] = '';\n }\n }\n var href = cap[2];\n var title = '';\n if (this.options.pedantic) {\n // split pedantic href and title\n var link = /^([^'\"]*[^\\s])\\s+(['\"])(.*)\\2/.exec(href);\n if (link) {\n href = link[1];\n title = link[3];\n }\n } else {\n title = cap[3] ? cap[3].slice(1, -1) : '';\n }\n href = href.trim();\n if (/^$/.test(trimmedUrl)) {\n // pedantic allows starting angle bracket without ending angle bracket\n href = href.slice(1);\n } else {\n href = href.slice(1, -1);\n }\n }\n return outputLink(cap, {\n href: href ? href.replace(this.rules.inline._escapes, '$1') : href,\n title: title ? title.replace(this.rules.inline._escapes, '$1') : title\n }, cap[0], this.lexer);\n }\n };\n _proto.reflink = function reflink(src, links) {\n var cap;\n if ((cap = this.rules.inline.reflink.exec(src)) || (cap = this.rules.inline.nolink.exec(src))) {\n var link = (cap[2] || cap[1]).replace(/\\s+/g, ' ');\n link = links[link.toLowerCase()];\n if (!link) {\n var text = cap[0].charAt(0);\n return {\n type: 'text',\n raw: text,\n text: text\n };\n }\n return outputLink(cap, link, cap[0], this.lexer);\n }\n };\n _proto.emStrong = function emStrong(src, maskedSrc, prevChar) {\n if (prevChar === void 0) {\n prevChar = '';\n }\n var match = this.rules.inline.emStrong.lDelim.exec(src);\n if (!match) return;\n\n // _ can't be between two alphanumerics. \\p{L}\\p{N} includes non-english alphabet/numbers as well\n if (match[3] && 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DE64\\uDE67-\\uDE6A\\uDE6C-\\uDE72\\uDE74-\\uDE77\\uDE79-\\uDE7C\\uDE7E\\uDE80-\\uDE89\\uDE8B-\\uDE9B\\uDEA1-\\uDEA3\\uDEA5-\\uDEA9\\uDEAB-\\uDEBB]|\\uD83C[\\uDD00-\\uDD0C]|\\uD83E[\\uDFF0-\\uDFF9]|\\uD869[\\uDC00-\\uDEDF\\uDF00-\\uDFFF]|\\uD86D[\\uDC00-\\uDF38\\uDF40-\\uDFFF]|\\uD86E[\\uDC00-\\uDC1D\\uDC20-\\uDFFF]|\\uD873[\\uDC00-\\uDEA1\\uDEB0-\\uDFFF]|\\uD87A[\\uDC00-\\uDFE0]|\\uD87E[\\uDC00-\\uDE1D]|\\uD884[\\uDC00-\\uDF4A])/)) return;\n var nextChar = match[1] || match[2] || '';\n if (!nextChar || nextChar && (prevChar === '' || this.rules.inline.punctuation.exec(prevChar))) {\n var lLength = match[0].length - 1;\n var rDelim,\n rLength,\n delimTotal = lLength,\n midDelimTotal = 0;\n var endReg = match[0][0] === '*' ? this.rules.inline.emStrong.rDelimAst : this.rules.inline.emStrong.rDelimUnd;\n endReg.lastIndex = 0;\n\n // Clip maskedSrc to same section of string as src (move to lexer?)\n maskedSrc = maskedSrc.slice(-1 * src.length + lLength);\n while ((match = endReg.exec(maskedSrc)) != null) {\n rDelim = match[1] || match[2] || match[3] || match[4] || match[5] || match[6];\n if (!rDelim) continue; // skip single * in __abc*abc__\n\n rLength = rDelim.length;\n if (match[3] || match[4]) {\n // found another Left Delim\n delimTotal += rLength;\n continue;\n } else if (match[5] || match[6]) {\n // either Left or Right Delim\n if (lLength % 3 && !((lLength + rLength) % 3)) {\n midDelimTotal += rLength;\n continue; // CommonMark Emphasis Rules 9-10\n }\n }\n\n delimTotal -= rLength;\n if (delimTotal > 0) continue; // Haven't found enough closing delimiters\n\n // Remove extra characters. *a*** -> *a*\n rLength = Math.min(rLength, rLength + delimTotal + midDelimTotal);\n var raw = src.slice(0, lLength + match.index + (match[0].length - rDelim.length) + rLength);\n\n // Create `em` if smallest delimiter has odd char count. *a***\n if (Math.min(lLength, rLength) % 2) {\n var _text = raw.slice(1, -1);\n return {\n type: 'em',\n raw: raw,\n text: _text,\n tokens: this.lexer.inlineTokens(_text)\n };\n }\n\n // Create 'strong' if smallest delimiter has even char count. **a***\n var text = raw.slice(2, -2);\n return {\n type: 'strong',\n raw: raw,\n text: text,\n tokens: this.lexer.inlineTokens(text)\n };\n }\n }\n };\n _proto.codespan = function codespan(src) {\n var cap = this.rules.inline.code.exec(src);\n if (cap) {\n var text = cap[2].replace(/\\n/g, ' ');\n var hasNonSpaceChars = /[^ ]/.test(text);\n var hasSpaceCharsOnBothEnds = /^ /.test(text) && / $/.test(text);\n if (hasNonSpaceChars && hasSpaceCharsOnBothEnds) {\n text = text.substring(1, text.length - 1);\n }\n text = escape(text, true);\n return {\n type: 'codespan',\n raw: cap[0],\n text: text\n };\n }\n };\n _proto.br = function br(src) {\n var cap = this.rules.inline.br.exec(src);\n if (cap) {\n return {\n type: 'br',\n raw: cap[0]\n };\n }\n };\n _proto.del = function del(src) {\n var cap = this.rules.inline.del.exec(src);\n if (cap) {\n return {\n type: 'del',\n raw: cap[0],\n text: cap[2],\n tokens: this.lexer.inlineTokens(cap[2])\n };\n }\n };\n _proto.autolink = function autolink(src, mangle) {\n var cap = this.rules.inline.autolink.exec(src);\n if (cap) {\n var text, href;\n if (cap[2] === '@') {\n text = escape(this.options.mangle ? mangle(cap[1]) : cap[1]);\n href = 'mailto:' + text;\n } else {\n text = escape(cap[1]);\n href = text;\n }\n return {\n type: 'link',\n raw: cap[0],\n text: text,\n href: href,\n tokens: [{\n type: 'text',\n raw: text,\n text: text\n }]\n };\n }\n };\n _proto.url = function url(src, mangle) {\n var cap;\n if (cap = this.rules.inline.url.exec(src)) {\n var text, href;\n if (cap[2] === '@') {\n text = escape(this.options.mangle ? mangle(cap[0]) : cap[0]);\n href = 'mailto:' + text;\n } else {\n // do extended autolink path validation\n var prevCapZero;\n do {\n prevCapZero = cap[0];\n cap[0] = this.rules.inline._backpedal.exec(cap[0])[0];\n } while (prevCapZero !== cap[0]);\n text = escape(cap[0]);\n if (cap[1] === 'www.') {\n href = 'http://' + cap[0];\n } else {\n href = cap[0];\n }\n }\n return {\n type: 'link',\n raw: cap[0],\n text: text,\n href: href,\n tokens: [{\n type: 'text',\n raw: text,\n text: text\n }]\n };\n }\n };\n _proto.inlineText = function inlineText(src, smartypants) {\n var cap = this.rules.inline.text.exec(src);\n if (cap) {\n var text;\n if (this.lexer.state.inRawBlock) {\n text = this.options.sanitize ? this.options.sanitizer ? this.options.sanitizer(cap[0]) : escape(cap[0]) : cap[0];\n } else {\n text = escape(this.options.smartypants ? smartypants(cap[0]) : cap[0]);\n }\n return {\n type: 'text',\n raw: cap[0],\n text: text\n };\n }\n };\n return Tokenizer;\n}();\n\n/**\n * Block-Level Grammar\n */\nvar block = {\n newline: /^(?: *(?:\\n|$))+/,\n code: /^( {4}[^\\n]+(?:\\n(?: *(?:\\n|$))*)?)+/,\n fences: /^ {0,3}(`{3,}(?=[^`\\n]*(?:\\n|$))|~{3,})([^\\n]*)(?:\\n|$)(?:|([\\s\\S]*?)(?:\\n|$))(?: {0,3}\\1[~`]* *(?=\\n|$)|$)/,\n hr: /^ {0,3}((?:-[\\t ]*){3,}|(?:_[ \\t]*){3,}|(?:\\*[ \\t]*){3,})(?:\\n+|$)/,\n heading: /^ {0,3}(#{1,6})(?=\\s|$)(.*)(?:\\n+|$)/,\n blockquote: /^( {0,3}> ?(paragraph|[^\\n]*)(?:\\n|$))+/,\n list: /^( {0,3}bull)([ \\t][^\\n]+?)?(?:\\n|$)/,\n html: '^ {0,3}(?:' // optional indentation\n + '<(script|pre|style|textarea)[\\\\s>][\\\\s\\\\S]*?(?:[^\\\\n]*\\\\n+|$)' // (1)\n + '|comment[^\\\\n]*(\\\\n+|$)' // (2)\n + '|<\\\\?[\\\\s\\\\S]*?(?:\\\\?>\\\\n*|$)' // (3)\n + '|\\\\n*|$)' // (4)\n + '|\\\\n*|$)' // (5)\n + '|)[\\\\s\\\\S]*?(?:(?:\\\\n *)+\\\\n|$)' // (6)\n + '|<(?!script|pre|style|textarea)([a-z][\\\\w-]*)(?:attribute)*? */?>(?=[ \\\\t]*(?:\\\\n|$))[\\\\s\\\\S]*?(?:(?:\\\\n *)+\\\\n|$)' // (7) open tag\n + '|(?=[ \\\\t]*(?:\\\\n|$))[\\\\s\\\\S]*?(?:(?:\\\\n *)+\\\\n|$)' // (7) closing tag\n + ')',\n def: /^ {0,3}\\[(label)\\]: *(?:\\n *)?([^<\\s][^\\s]*|<.*?>)(?:(?: +(?:\\n *)?| *\\n *)(title))? *(?:\\n+|$)/,\n table: noopTest,\n lheading: /^((?:.|\\n(?!\\n))+?)\\n {0,3}(=+|-+) *(?:\\n+|$)/,\n // regex template, placeholders will be replaced according to different paragraph\n // interruption rules of commonmark and the original markdown spec:\n _paragraph: /^([^\\n]+(?:\\n(?!hr|heading|lheading|blockquote|fences|list|html|table| +\\n)[^\\n]+)*)/,\n text: /^[^\\n]+/\n};\nblock._label = /(?!\\s*\\])(?:\\\\.|[^\\[\\]\\\\])+/;\nblock._title = /(?:\"(?:\\\\\"?|[^\"\\\\])*\"|'[^'\\n]*(?:\\n[^'\\n]+)*\\n?'|\\([^()]*\\))/;\nblock.def = edit(block.def).replace('label', block._label).replace('title', block._title).getRegex();\nblock.bullet = /(?:[*+-]|\\d{1,9}[.)])/;\nblock.listItemStart = edit(/^( *)(bull) */).replace('bull', block.bullet).getRegex();\nblock.list = edit(block.list).replace(/bull/g, block.bullet).replace('hr', '\\\\n+(?=\\\\1?(?:(?:- *){3,}|(?:_ *){3,}|(?:\\\\* *){3,})(?:\\\\n+|$))').replace('def', '\\\\n+(?=' + block.def.source + ')').getRegex();\nblock._tag = 'address|article|aside|base|basefont|blockquote|body|caption' + '|center|col|colgroup|dd|details|dialog|dir|div|dl|dt|fieldset|figcaption' + '|figure|footer|form|frame|frameset|h[1-6]|head|header|hr|html|iframe' + '|legend|li|link|main|menu|menuitem|meta|nav|noframes|ol|optgroup|option' + '|p|param|section|source|summary|table|tbody|td|tfoot|th|thead|title|tr' + '|track|ul';\nblock._comment = /|$)/;\nblock.html = edit(block.html, 'i').replace('comment', block._comment).replace('tag', block._tag).replace('attribute', / +[a-zA-Z:_][\\w.:-]*(?: *= *\"[^\"\\n]*\"| *= *'[^'\\n]*'| *= *[^\\s\"'=<>`]+)?/).getRegex();\nblock.paragraph = edit(block._paragraph).replace('hr', block.hr).replace('heading', ' {0,3}#{1,6} ').replace('|lheading', '') // setex headings don't interrupt commonmark paragraphs\n.replace('|table', '').replace('blockquote', ' {0,3}>').replace('fences', ' {0,3}(?:`{3,}(?=[^`\\\\n]*\\\\n)|~{3,})[^\\\\n]*\\\\n').replace('list', ' {0,3}(?:[*+-]|1[.)]) ') // only lists starting from 1 can interrupt\n.replace('html', ')|<(?:script|pre|style|textarea|!--)').replace('tag', block._tag) // pars can be interrupted by type (6) html blocks\n.getRegex();\nblock.blockquote = edit(block.blockquote).replace('paragraph', block.paragraph).getRegex();\n\n/**\n * Normal Block Grammar\n */\n\nblock.normal = _extends({}, block);\n\n/**\n * GFM Block Grammar\n */\n\nblock.gfm = _extends({}, block.normal, {\n table: '^ *([^\\\\n ].*\\\\|.*)\\\\n' // Header\n + ' {0,3}(?:\\\\| *)?(:?-+:? *(?:\\\\| *:?-+:? *)*)(?:\\\\| *)?' // Align\n + '(?:\\\\n((?:(?! *\\\\n|hr|heading|blockquote|code|fences|list|html).*(?:\\\\n|$))*)\\\\n*|$)' // Cells\n});\n\nblock.gfm.table = edit(block.gfm.table).replace('hr', block.hr).replace('heading', ' {0,3}#{1,6} ').replace('blockquote', ' {0,3}>').replace('code', ' {4}[^\\\\n]').replace('fences', ' {0,3}(?:`{3,}(?=[^`\\\\n]*\\\\n)|~{3,})[^\\\\n]*\\\\n').replace('list', ' {0,3}(?:[*+-]|1[.)]) ') // only lists starting from 1 can interrupt\n.replace('html', ')|<(?:script|pre|style|textarea|!--)').replace('tag', block._tag) // tables can be interrupted by type (6) html blocks\n.getRegex();\nblock.gfm.paragraph = edit(block._paragraph).replace('hr', block.hr).replace('heading', ' {0,3}#{1,6} ').replace('|lheading', '') // setex headings don't interrupt commonmark paragraphs\n.replace('table', block.gfm.table) // interrupt paragraphs with table\n.replace('blockquote', ' {0,3}>').replace('fences', ' {0,3}(?:`{3,}(?=[^`\\\\n]*\\\\n)|~{3,})[^\\\\n]*\\\\n').replace('list', ' {0,3}(?:[*+-]|1[.)]) ') // only lists starting from 1 can interrupt\n.replace('html', ')|<(?:script|pre|style|textarea|!--)').replace('tag', block._tag) // pars can be interrupted by type (6) html blocks\n.getRegex();\n/**\n * Pedantic grammar (original John Gruber's loose markdown specification)\n */\n\nblock.pedantic = _extends({}, block.normal, {\n html: edit('^ *(?:comment *(?:\\\\n|\\\\s*$)' + '|<(tag)[\\\\s\\\\S]+? *(?:\\\\n{2,}|\\\\s*$)' // closed tag\n + '|\\\\s]*)*?/?> *(?:\\\\n{2,}|\\\\s*$))').replace('comment', block._comment).replace(/tag/g, '(?!(?:' + 'a|em|strong|small|s|cite|q|dfn|abbr|data|time|code|var|samp|kbd|sub' + '|sup|i|b|u|mark|ruby|rt|rp|bdi|bdo|span|br|wbr|ins|del|img)' + '\\\\b)\\\\w+(?!:|[^\\\\w\\\\s@]*@)\\\\b').getRegex(),\n def: /^ *\\[([^\\]]+)\\]: *]+)>?(?: +([\"(][^\\n]+[\")]))? *(?:\\n+|$)/,\n heading: /^(#{1,6})(.*)(?:\\n+|$)/,\n fences: noopTest,\n // fences not supported\n lheading: /^(.+?)\\n {0,3}(=+|-+) *(?:\\n+|$)/,\n paragraph: edit(block.normal._paragraph).replace('hr', block.hr).replace('heading', ' *#{1,6} *[^\\n]').replace('lheading', block.lheading).replace('blockquote', ' {0,3}>').replace('|fences', '').replace('|list', '').replace('|html', '').getRegex()\n});\n\n/**\n * Inline-Level Grammar\n */\nvar inline = {\n escape: /^\\\\([!\"#$%&'()*+,\\-./:;<=>?@\\[\\]\\\\^_`{|}~])/,\n autolink: /^<(scheme:[^\\s\\x00-\\x1f<>]*|email)>/,\n url: noopTest,\n tag: '^comment' + '|^' // self-closing tag\n + '|^<[a-zA-Z][\\\\w-]*(?:attribute)*?\\\\s*/?>' // open tag\n + '|^<\\\\?[\\\\s\\\\S]*?\\\\?>' // processing instruction, e.g. \n + '|^' // declaration, e.g. \n + '|^',\n // CDATA section\n link: /^!?\\[(label)\\]\\(\\s*(href)(?:\\s+(title))?\\s*\\)/,\n reflink: /^!?\\[(label)\\]\\[(ref)\\]/,\n nolink: /^!?\\[(ref)\\](?:\\[\\])?/,\n reflinkSearch: 'reflink|nolink(?!\\\\()',\n emStrong: {\n lDelim: /^(?:\\*+(?:([punct_])|[^\\s*]))|^_+(?:([punct*])|([^\\s_]))/,\n // (1) and (2) can only be a Right Delimiter. (3) and (4) can only be Left. (5) and (6) can be either Left or Right.\n // () Skip orphan inside strong () Consume to delim (1) #*** (2) a***#, a*** (3) #***a, ***a (4) ***# (5) #***# (6) a***a\n rDelimAst: /^(?:[^_*\\\\]|\\\\.)*?\\_\\_(?:[^_*\\\\]|\\\\.)*?\\*(?:[^_*\\\\]|\\\\.)*?(?=\\_\\_)|(?:[^*\\\\]|\\\\.)+(?=[^*])|[punct_](\\*+)(?=[\\s]|$)|(?:[^punct*_\\s\\\\]|\\\\.)(\\*+)(?=[punct_\\s]|$)|[punct_\\s](\\*+)(?=[^punct*_\\s])|[\\s](\\*+)(?=[punct_])|[punct_](\\*+)(?=[punct_])|(?:[^punct*_\\s\\\\]|\\\\.)(\\*+)(?=[^punct*_\\s])/,\n rDelimUnd: /^(?:[^_*\\\\]|\\\\.)*?\\*\\*(?:[^_*\\\\]|\\\\.)*?\\_(?:[^_*\\\\]|\\\\.)*?(?=\\*\\*)|(?:[^_\\\\]|\\\\.)+(?=[^_])|[punct*](\\_+)(?=[\\s]|$)|(?:[^punct*_\\s\\\\]|\\\\.)(\\_+)(?=[punct*\\s]|$)|[punct*\\s](\\_+)(?=[^punct*_\\s])|[\\s](\\_+)(?=[punct*])|[punct*](\\_+)(?=[punct*])/ // ^- Not allowed for _\n },\n\n code: /^(`+)([^`]|[^`][\\s\\S]*?[^`])\\1(?!`)/,\n br: /^( {2,}|\\\\)\\n(?!\\s*$)/,\n del: noopTest,\n text: /^(`+|[^`])(?:(?= {2,}\\n)|[\\s\\S]*?(?:(?=[\\\\?@\\\\[\\\\]`^{|}~';\ninline.punctuation = edit(inline.punctuation).replace(/punctuation/g, inline._punctuation).getRegex();\n\n// sequences em should skip over [title](link), `code`, \ninline.blockSkip = /\\[[^\\]]*?\\]\\([^\\)]*?\\)|`[^`]*?`|<[^>]*?>/g;\n// lookbehind is not available on Safari as of version 16\n// inline.escapedEmSt = /(?<=(?:^|[^\\\\)(?:\\\\[^])*)\\\\[*_]/g;\ninline.escapedEmSt = /(?:^|[^\\\\])(?:\\\\\\\\)*\\\\[*_]/g;\ninline._comment = edit(block._comment).replace('(?:-->|$)', '-->').getRegex();\ninline.emStrong.lDelim = edit(inline.emStrong.lDelim).replace(/punct/g, inline._punctuation).getRegex();\ninline.emStrong.rDelimAst = edit(inline.emStrong.rDelimAst, 'g').replace(/punct/g, inline._punctuation).getRegex();\ninline.emStrong.rDelimUnd = edit(inline.emStrong.rDelimUnd, 'g').replace(/punct/g, inline._punctuation).getRegex();\ninline._escapes = /\\\\([!\"#$%&'()*+,\\-./:;<=>?@\\[\\]\\\\^_`{|}~])/g;\ninline._scheme = /[a-zA-Z][a-zA-Z0-9+.-]{1,31}/;\ninline._email = /[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+(@)[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)+(?![-_])/;\ninline.autolink = edit(inline.autolink).replace('scheme', inline._scheme).replace('email', inline._email).getRegex();\ninline._attribute = /\\s+[a-zA-Z:_][\\w.:-]*(?:\\s*=\\s*\"[^\"]*\"|\\s*=\\s*'[^']*'|\\s*=\\s*[^\\s\"'=<>`]+)?/;\ninline.tag = edit(inline.tag).replace('comment', inline._comment).replace('attribute', inline._attribute).getRegex();\ninline._label = /(?:\\[(?:\\\\.|[^\\[\\]\\\\])*\\]|\\\\.|`[^`]*`|[^\\[\\]\\\\`])*?/;\ninline._href = /<(?:\\\\.|[^\\n<>\\\\])+>|[^\\s\\x00-\\x1f]*/;\ninline._title = /\"(?:\\\\\"?|[^\"\\\\])*\"|'(?:\\\\'?|[^'\\\\])*'|\\((?:\\\\\\)?|[^)\\\\])*\\)/;\ninline.link = edit(inline.link).replace('label', inline._label).replace('href', inline._href).replace('title', inline._title).getRegex();\ninline.reflink = edit(inline.reflink).replace('label', inline._label).replace('ref', block._label).getRegex();\ninline.nolink = edit(inline.nolink).replace('ref', block._label).getRegex();\ninline.reflinkSearch = edit(inline.reflinkSearch, 'g').replace('reflink', inline.reflink).replace('nolink', inline.nolink).getRegex();\n\n/**\n * Normal Inline Grammar\n */\n\ninline.normal = _extends({}, inline);\n\n/**\n * Pedantic Inline Grammar\n */\n\ninline.pedantic = _extends({}, inline.normal, {\n strong: {\n start: /^__|\\*\\*/,\n middle: /^__(?=\\S)([\\s\\S]*?\\S)__(?!_)|^\\*\\*(?=\\S)([\\s\\S]*?\\S)\\*\\*(?!\\*)/,\n endAst: /\\*\\*(?!\\*)/g,\n endUnd: /__(?!_)/g\n },\n em: {\n start: /^_|\\*/,\n middle: /^()\\*(?=\\S)([\\s\\S]*?\\S)\\*(?!\\*)|^_(?=\\S)([\\s\\S]*?\\S)_(?!_)/,\n endAst: /\\*(?!\\*)/g,\n endUnd: /_(?!_)/g\n },\n link: edit(/^!?\\[(label)\\]\\((.*?)\\)/).replace('label', inline._label).getRegex(),\n reflink: edit(/^!?\\[(label)\\]\\s*\\[([^\\]]*)\\]/).replace('label', inline._label).getRegex()\n});\n\n/**\n * GFM Inline Grammar\n */\n\ninline.gfm = _extends({}, inline.normal, {\n escape: edit(inline.escape).replace('])', '~|])').getRegex(),\n _extended_email: /[A-Za-z0-9._+-]+(@)[a-zA-Z0-9-_]+(?:\\.[a-zA-Z0-9-_]*[a-zA-Z0-9])+(?![-_])/,\n url: /^((?:ftp|https?):\\/\\/|www\\.)(?:[a-zA-Z0-9\\-]+\\.?)+[^\\s<]*|^email/,\n _backpedal: /(?:[^?!.,:;*_'\"~()&]+|\\([^)]*\\)|&(?![a-zA-Z0-9]+;$)|[?!.,:;*_'\"~)]+(?!$))+/,\n del: /^(~~?)(?=[^\\s~])([\\s\\S]*?[^\\s~])\\1(?=[^~]|$)/,\n text: /^([`~]+|[^`~])(?:(?= {2,}\\n)|(?=[a-zA-Z0-9.!#$%&'*+\\/=?_`{\\|}~-]+@)|[\\s\\S]*?(?:(?=[\\\\ 0.5) {\n ch = 'x' + ch.toString(16);\n }\n out += '&#' + ch + ';';\n }\n return out;\n}\n\n/**\n * Block Lexer\n */\nvar Lexer = /*#__PURE__*/function () {\n function Lexer(options) {\n this.tokens = [];\n this.tokens.links = Object.create(null);\n this.options = options || exports.defaults;\n this.options.tokenizer = this.options.tokenizer || new Tokenizer();\n this.tokenizer = this.options.tokenizer;\n this.tokenizer.options = this.options;\n this.tokenizer.lexer = this;\n this.inlineQueue = [];\n this.state = {\n inLink: false,\n inRawBlock: false,\n top: true\n };\n var rules = {\n block: block.normal,\n inline: inline.normal\n };\n if (this.options.pedantic) {\n rules.block = block.pedantic;\n rules.inline = inline.pedantic;\n } else if (this.options.gfm) {\n rules.block = block.gfm;\n if (this.options.breaks) {\n rules.inline = inline.breaks;\n } else {\n rules.inline = inline.gfm;\n }\n }\n this.tokenizer.rules = rules;\n }\n\n /**\n * Expose Rules\n */\n /**\n * Static Lex Method\n */\n Lexer.lex = function lex(src, options) {\n var lexer = new Lexer(options);\n return lexer.lex(src);\n }\n\n /**\n * Static Lex Inline Method\n */;\n Lexer.lexInline = function lexInline(src, options) {\n var lexer = new Lexer(options);\n return lexer.inlineTokens(src);\n }\n\n /**\n * Preprocessing\n */;\n var _proto = Lexer.prototype;\n _proto.lex = function lex(src) {\n src = src.replace(/\\r\\n|\\r/g, '\\n');\n this.blockTokens(src, this.tokens);\n var next;\n while (next = this.inlineQueue.shift()) {\n this.inlineTokens(next.src, next.tokens);\n }\n return this.tokens;\n }\n\n /**\n * Lexing\n */;\n _proto.blockTokens = function blockTokens(src, tokens) {\n var _this = this;\n if (tokens === void 0) {\n tokens = [];\n }\n if (this.options.pedantic) {\n src = src.replace(/\\t/g, ' ').replace(/^ +$/gm, '');\n } else {\n src = src.replace(/^( *)(\\t+)/gm, function (_, leading, tabs) {\n return leading + ' '.repeat(tabs.length);\n });\n }\n var token, lastToken, cutSrc, lastParagraphClipped;\n while (src) {\n if (this.options.extensions && this.options.extensions.block && this.options.extensions.block.some(function (extTokenizer) {\n if (token = extTokenizer.call({\n lexer: _this\n }, src, tokens)) {\n src = src.substring(token.raw.length);\n tokens.push(token);\n return true;\n }\n return false;\n })) {\n continue;\n }\n\n // newline\n if (token = this.tokenizer.space(src)) {\n src = src.substring(token.raw.length);\n if (token.raw.length === 1 && tokens.length > 0) {\n // if there's a single \\n as a spacer, it's terminating the last line,\n // so move it there so that we don't get unecessary paragraph tags\n tokens[tokens.length - 1].raw += '\\n';\n } else {\n tokens.push(token);\n }\n continue;\n }\n\n // code\n if (token = this.tokenizer.code(src)) {\n src = src.substring(token.raw.length);\n lastToken = tokens[tokens.length - 1];\n // An indented code block cannot interrupt a paragraph.\n if (lastToken && (lastToken.type === 'paragraph' || lastToken.type === 'text')) {\n lastToken.raw += '\\n' + token.raw;\n lastToken.text += '\\n' + token.text;\n this.inlineQueue[this.inlineQueue.length - 1].src = lastToken.text;\n } else {\n tokens.push(token);\n }\n continue;\n }\n\n // fences\n if (token = this.tokenizer.fences(src)) {\n src = src.substring(token.raw.length);\n tokens.push(token);\n continue;\n }\n\n // heading\n if (token = this.tokenizer.heading(src)) {\n src = src.substring(token.raw.length);\n tokens.push(token);\n continue;\n }\n\n // hr\n if (token = this.tokenizer.hr(src)) {\n src = src.substring(token.raw.length);\n tokens.push(token);\n continue;\n }\n\n // blockquote\n if (token = this.tokenizer.blockquote(src)) {\n src = src.substring(token.raw.length);\n tokens.push(token);\n continue;\n }\n\n // list\n if (token = this.tokenizer.list(src)) {\n src = src.substring(token.raw.length);\n tokens.push(token);\n continue;\n }\n\n // html\n if (token = this.tokenizer.html(src)) {\n src = src.substring(token.raw.length);\n tokens.push(token);\n continue;\n }\n\n // def\n if (token = this.tokenizer.def(src)) {\n src = src.substring(token.raw.length);\n lastToken = tokens[tokens.length - 1];\n if (lastToken && (lastToken.type === 'paragraph' || lastToken.type === 'text')) {\n lastToken.raw += '\\n' + token.raw;\n lastToken.text += '\\n' + token.raw;\n this.inlineQueue[this.inlineQueue.length - 1].src = lastToken.text;\n } else if (!this.tokens.links[token.tag]) {\n this.tokens.links[token.tag] = {\n href: token.href,\n title: token.title\n };\n }\n continue;\n }\n\n // table (gfm)\n if (token = this.tokenizer.table(src)) {\n src = src.substring(token.raw.length);\n tokens.push(token);\n continue;\n }\n\n // lheading\n if (token = this.tokenizer.lheading(src)) {\n src = src.substring(token.raw.length);\n tokens.push(token);\n continue;\n }\n\n // top-level paragraph\n // prevent paragraph consuming extensions by clipping 'src' to extension start\n cutSrc = src;\n if (this.options.extensions && this.options.extensions.startBlock) {\n (function () {\n var startIndex = Infinity;\n var tempSrc = src.slice(1);\n var tempStart = void 0;\n _this.options.extensions.startBlock.forEach(function (getStartIndex) {\n tempStart = getStartIndex.call({\n lexer: this\n }, tempSrc);\n if (typeof tempStart === 'number' && tempStart >= 0) {\n startIndex = Math.min(startIndex, tempStart);\n }\n });\n if (startIndex < Infinity && startIndex >= 0) {\n cutSrc = src.substring(0, startIndex + 1);\n }\n })();\n }\n if (this.state.top && (token = this.tokenizer.paragraph(cutSrc))) {\n lastToken = tokens[tokens.length - 1];\n if (lastParagraphClipped && lastToken.type === 'paragraph') {\n lastToken.raw += '\\n' + token.raw;\n lastToken.text += '\\n' + token.text;\n this.inlineQueue.pop();\n this.inlineQueue[this.inlineQueue.length - 1].src = lastToken.text;\n } else {\n tokens.push(token);\n }\n lastParagraphClipped = cutSrc.length !== src.length;\n src = src.substring(token.raw.length);\n continue;\n }\n\n // text\n if (token = this.tokenizer.text(src)) {\n src = src.substring(token.raw.length);\n lastToken = tokens[tokens.length - 1];\n if (lastToken && lastToken.type === 'text') {\n lastToken.raw += '\\n' + token.raw;\n lastToken.text += '\\n' + token.text;\n this.inlineQueue.pop();\n this.inlineQueue[this.inlineQueue.length - 1].src = lastToken.text;\n } else {\n tokens.push(token);\n }\n continue;\n }\n if (src) {\n var errMsg = 'Infinite loop on byte: ' + src.charCodeAt(0);\n if (this.options.silent) {\n console.error(errMsg);\n break;\n } else {\n throw new Error(errMsg);\n }\n }\n }\n this.state.top = true;\n return tokens;\n };\n _proto.inline = function inline(src, tokens) {\n if (tokens === void 0) {\n tokens = [];\n }\n this.inlineQueue.push({\n src: src,\n tokens: tokens\n });\n return tokens;\n }\n\n /**\n * Lexing/Compiling\n */;\n _proto.inlineTokens = function inlineTokens(src, tokens) {\n var _this2 = this;\n if (tokens === void 0) {\n tokens = [];\n }\n var token, lastToken, cutSrc;\n\n // String with links masked to avoid interference with em and strong\n var maskedSrc = src;\n var match;\n var keepPrevChar, prevChar;\n\n // Mask out reflinks\n if (this.tokens.links) {\n var links = Object.keys(this.tokens.links);\n if (links.length > 0) {\n while ((match = this.tokenizer.rules.inline.reflinkSearch.exec(maskedSrc)) != null) {\n if (links.includes(match[0].slice(match[0].lastIndexOf('[') + 1, -1))) {\n maskedSrc = maskedSrc.slice(0, match.index) + '[' + repeatString('a', match[0].length - 2) + ']' + maskedSrc.slice(this.tokenizer.rules.inline.reflinkSearch.lastIndex);\n }\n }\n }\n }\n // Mask out other blocks\n while ((match = this.tokenizer.rules.inline.blockSkip.exec(maskedSrc)) != null) {\n maskedSrc = maskedSrc.slice(0, match.index) + '[' + repeatString('a', match[0].length - 2) + ']' + maskedSrc.slice(this.tokenizer.rules.inline.blockSkip.lastIndex);\n }\n\n // Mask out escaped em & strong delimiters\n while ((match = this.tokenizer.rules.inline.escapedEmSt.exec(maskedSrc)) != null) {\n maskedSrc = maskedSrc.slice(0, match.index + match[0].length - 2) + '++' + maskedSrc.slice(this.tokenizer.rules.inline.escapedEmSt.lastIndex);\n this.tokenizer.rules.inline.escapedEmSt.lastIndex--;\n }\n while (src) {\n if (!keepPrevChar) {\n prevChar = '';\n }\n keepPrevChar = false;\n\n // extensions\n if (this.options.extensions && this.options.extensions.inline && this.options.extensions.inline.some(function (extTokenizer) {\n if (token = extTokenizer.call({\n lexer: _this2\n }, src, tokens)) {\n src = src.substring(token.raw.length);\n tokens.push(token);\n return true;\n }\n return false;\n })) {\n continue;\n }\n\n // escape\n if (token = this.tokenizer.escape(src)) {\n src = src.substring(token.raw.length);\n tokens.push(token);\n continue;\n }\n\n // tag\n if (token = this.tokenizer.tag(src)) {\n src = src.substring(token.raw.length);\n lastToken = tokens[tokens.length - 1];\n if (lastToken && token.type === 'text' && lastToken.type === 'text') {\n lastToken.raw += token.raw;\n lastToken.text += token.text;\n } else {\n tokens.push(token);\n }\n continue;\n }\n\n // link\n if (token = this.tokenizer.link(src)) {\n src = src.substring(token.raw.length);\n tokens.push(token);\n continue;\n }\n\n // reflink, nolink\n if (token = this.tokenizer.reflink(src, this.tokens.links)) {\n src = src.substring(token.raw.length);\n lastToken = tokens[tokens.length - 1];\n if (lastToken && token.type === 'text' && lastToken.type === 'text') {\n lastToken.raw += token.raw;\n lastToken.text += token.text;\n } else {\n tokens.push(token);\n }\n continue;\n }\n\n // em & strong\n if (token = this.tokenizer.emStrong(src, maskedSrc, prevChar)) {\n src = src.substring(token.raw.length);\n tokens.push(token);\n continue;\n }\n\n // code\n if (token = this.tokenizer.codespan(src)) {\n src = src.substring(token.raw.length);\n tokens.push(token);\n continue;\n }\n\n // br\n if (token = this.tokenizer.br(src)) {\n src = src.substring(token.raw.length);\n tokens.push(token);\n continue;\n }\n\n // del (gfm)\n if (token = this.tokenizer.del(src)) {\n src = src.substring(token.raw.length);\n tokens.push(token);\n continue;\n }\n\n // autolink\n if (token = this.tokenizer.autolink(src, mangle)) {\n src = src.substring(token.raw.length);\n tokens.push(token);\n continue;\n }\n\n // url (gfm)\n if (!this.state.inLink && (token = this.tokenizer.url(src, mangle))) {\n src = src.substring(token.raw.length);\n tokens.push(token);\n continue;\n }\n\n // text\n // prevent inlineText consuming extensions by clipping 'src' to extension start\n cutSrc = src;\n if (this.options.extensions && this.options.extensions.startInline) {\n (function () {\n var startIndex = Infinity;\n var tempSrc = src.slice(1);\n var tempStart = void 0;\n _this2.options.extensions.startInline.forEach(function (getStartIndex) {\n tempStart = getStartIndex.call({\n lexer: this\n }, tempSrc);\n if (typeof tempStart === 'number' && tempStart >= 0) {\n startIndex = Math.min(startIndex, tempStart);\n }\n });\n if (startIndex < Infinity && startIndex >= 0) {\n cutSrc = src.substring(0, startIndex + 1);\n }\n })();\n }\n if (token = this.tokenizer.inlineText(cutSrc, smartypants)) {\n src = src.substring(token.raw.length);\n if (token.raw.slice(-1) !== '_') {\n // Track prevChar before string of ____ started\n prevChar = token.raw.slice(-1);\n }\n keepPrevChar = true;\n lastToken = tokens[tokens.length - 1];\n if (lastToken && lastToken.type === 'text') {\n lastToken.raw += token.raw;\n lastToken.text += token.text;\n } else {\n tokens.push(token);\n }\n continue;\n }\n if (src) {\n var errMsg = 'Infinite loop on byte: ' + src.charCodeAt(0);\n if (this.options.silent) {\n console.error(errMsg);\n break;\n } else {\n throw new Error(errMsg);\n }\n }\n }\n return tokens;\n };\n _createClass(Lexer, null, [{\n key: \"rules\",\n get: function get() {\n return {\n block: block,\n inline: inline\n };\n }\n }]);\n return Lexer;\n}();\n\n/**\n * Renderer\n */\nvar Renderer = /*#__PURE__*/function () {\n function Renderer(options) {\n this.options = options || exports.defaults;\n }\n var _proto = Renderer.prototype;\n _proto.code = function code(_code, infostring, escaped) {\n var lang = (infostring || '').match(/\\S*/)[0];\n if (this.options.highlight) {\n var out = this.options.highlight(_code, lang);\n if (out != null && out !== _code) {\n escaped = true;\n _code = out;\n }\n }\n _code = _code.replace(/\\n$/, '') + '\\n';\n if (!lang) {\n return '
' + (escaped ? _code : escape(_code, true)) + '
\\n';\n }\n return '
' + (escaped ? _code : escape(_code, true)) + '
\\n';\n }\n\n /**\n * @param {string} quote\n */;\n _proto.blockquote = function blockquote(quote) {\n return \"
\\n\" + quote + \"
\\n\";\n };\n _proto.html = function html(_html) {\n return _html;\n }\n\n /**\n * @param {string} text\n * @param {string} level\n * @param {string} raw\n * @param {any} slugger\n */;\n _proto.heading = function heading(text, level, raw, slugger) {\n if (this.options.headerIds) {\n var id = this.options.headerPrefix + slugger.slug(raw);\n return \"\" + text + \"\\n\";\n }\n\n // ignore IDs\n return \"\" + text + \"\\n\";\n };\n _proto.hr = function hr() {\n return this.options.xhtml ? '
\\n' : '
\\n';\n };\n _proto.list = function list(body, ordered, start) {\n var type = ordered ? 'ol' : 'ul',\n startatt = ordered && start !== 1 ? ' start=\"' + start + '\"' : '';\n return '<' + type + startatt + '>\\n' + body + '\\n';\n }\n\n /**\n * @param {string} text\n */;\n _proto.listitem = function listitem(text) {\n return \"
  • \" + text + \"
  • \\n\";\n };\n _proto.checkbox = function checkbox(checked) {\n return ' ';\n }\n\n /**\n * @param {string} text\n */;\n _proto.paragraph = function paragraph(text) {\n return \"

    \" + text + \"

    \\n\";\n }\n\n /**\n * @param {string} header\n * @param {string} body\n */;\n _proto.table = function table(header, body) {\n if (body) body = \"\" + body + \"\";\n return '\\n' + '\\n' + header + '\\n' + body + '
    \\n';\n }\n\n /**\n * @param {string} content\n */;\n _proto.tablerow = function tablerow(content) {\n return \"\\n\" + content + \"\\n\";\n };\n _proto.tablecell = function tablecell(content, flags) {\n var type = flags.header ? 'th' : 'td';\n var tag = flags.align ? \"<\" + type + \" align=\\\"\" + flags.align + \"\\\">\" : \"<\" + type + \">\";\n return tag + content + (\"\\n\");\n }\n\n /**\n * span level renderer\n * @param {string} text\n */;\n _proto.strong = function strong(text) {\n return \"\" + text + \"\";\n }\n\n /**\n * @param {string} text\n */;\n _proto.em = function em(text) {\n return \"\" + text + \"\";\n }\n\n /**\n * @param {string} text\n */;\n _proto.codespan = function codespan(text) {\n return \"\" + text + \"\";\n };\n _proto.br = function br() {\n return this.options.xhtml ? '
    ' : '
    ';\n }\n\n /**\n * @param {string} text\n */;\n _proto.del = function del(text) {\n return \"\" + text + \"\";\n }\n\n /**\n * @param {string} href\n * @param {string} title\n * @param {string} text\n */;\n _proto.link = function link(href, title, text) {\n href = cleanUrl(this.options.sanitize, this.options.baseUrl, href);\n if (href === null) {\n return text;\n }\n var out = '
    ';\n return out;\n }\n\n /**\n * @param {string} href\n * @param {string} title\n * @param {string} text\n */;\n _proto.image = function image(href, title, text) {\n href = cleanUrl(this.options.sanitize, this.options.baseUrl, href);\n if (href === null) {\n return text;\n }\n var out = \"\\\"\"' : '>';\n return out;\n };\n _proto.text = function text(_text) {\n return _text;\n };\n return Renderer;\n}();\n\n/**\n * TextRenderer\n * returns only the textual part of the token\n */\nvar TextRenderer = /*#__PURE__*/function () {\n function TextRenderer() {}\n var _proto = TextRenderer.prototype;\n // no need for block level renderers\n _proto.strong = function strong(text) {\n return text;\n };\n _proto.em = function em(text) {\n return text;\n };\n _proto.codespan = function codespan(text) {\n return text;\n };\n _proto.del = function del(text) {\n return text;\n };\n _proto.html = function html(text) {\n return text;\n };\n _proto.text = function text(_text) {\n return _text;\n };\n _proto.link = function link(href, title, text) {\n return '' + text;\n };\n _proto.image = function image(href, title, text) {\n return '' + text;\n };\n _proto.br = function br() {\n return '';\n };\n return TextRenderer;\n}();\n\n/**\n * Slugger generates header id\n */\nvar Slugger = /*#__PURE__*/function () {\n function Slugger() {\n this.seen = {};\n }\n\n /**\n * @param {string} value\n */\n var _proto = Slugger.prototype;\n _proto.serialize = function serialize(value) {\n return value.toLowerCase().trim()\n // remove html tags\n .replace(/<[!\\/a-z].*?>/ig, '')\n // remove unwanted chars\n .replace(/[\\u2000-\\u206F\\u2E00-\\u2E7F\\\\'!\"#$%&()*+,./:;<=>?@[\\]^`{|}~]/g, '').replace(/\\s/g, '-');\n }\n\n /**\n * Finds the next safe (unique) slug to use\n * @param {string} originalSlug\n * @param {boolean} isDryRun\n */;\n _proto.getNextSafeSlug = function getNextSafeSlug(originalSlug, isDryRun) {\n var slug = originalSlug;\n var occurenceAccumulator = 0;\n if (this.seen.hasOwnProperty(slug)) {\n occurenceAccumulator = this.seen[originalSlug];\n do {\n occurenceAccumulator++;\n slug = originalSlug + '-' + occurenceAccumulator;\n } while (this.seen.hasOwnProperty(slug));\n }\n if (!isDryRun) {\n this.seen[originalSlug] = occurenceAccumulator;\n this.seen[slug] = 0;\n }\n return slug;\n }\n\n /**\n * Convert string to unique id\n * @param {object} [options]\n * @param {boolean} [options.dryrun] Generates the next unique slug without\n * updating the internal accumulator.\n */;\n _proto.slug = function slug(value, options) {\n if (options === void 0) {\n options = {};\n }\n var slug = this.serialize(value);\n return this.getNextSafeSlug(slug, options.dryrun);\n };\n return Slugger;\n}();\n\n/**\n * Parsing & Compiling\n */\nvar Parser = /*#__PURE__*/function () {\n function Parser(options) {\n this.options = options || exports.defaults;\n this.options.renderer = this.options.renderer || new Renderer();\n this.renderer = this.options.renderer;\n this.renderer.options = this.options;\n this.textRenderer = new TextRenderer();\n this.slugger = new Slugger();\n }\n\n /**\n * Static Parse Method\n */\n Parser.parse = function parse(tokens, options) {\n var parser = new Parser(options);\n return parser.parse(tokens);\n }\n\n /**\n * Static Parse Inline Method\n */;\n Parser.parseInline = function parseInline(tokens, options) {\n var parser = new Parser(options);\n return parser.parseInline(tokens);\n }\n\n /**\n * Parse Loop\n */;\n var _proto = Parser.prototype;\n _proto.parse = function parse(tokens, top) {\n if (top === void 0) {\n top = true;\n }\n var out = '',\n i,\n j,\n k,\n l2,\n l3,\n row,\n cell,\n header,\n body,\n token,\n ordered,\n start,\n loose,\n itemBody,\n item,\n checked,\n task,\n checkbox,\n ret;\n var l = tokens.length;\n for (i = 0; i < l; i++) {\n token = tokens[i];\n\n // Run any renderer extensions\n if (this.options.extensions && this.options.extensions.renderers && this.options.extensions.renderers[token.type]) {\n ret = this.options.extensions.renderers[token.type].call({\n parser: this\n }, token);\n if (ret !== false || !['space', 'hr', 'heading', 'code', 'table', 'blockquote', 'list', 'html', 'paragraph', 'text'].includes(token.type)) {\n out += ret || '';\n continue;\n }\n }\n switch (token.type) {\n case 'space':\n {\n continue;\n }\n case 'hr':\n {\n out += this.renderer.hr();\n continue;\n }\n case 'heading':\n {\n out += this.renderer.heading(this.parseInline(token.tokens), token.depth, unescape(this.parseInline(token.tokens, this.textRenderer)), this.slugger);\n continue;\n }\n case 'code':\n {\n out += this.renderer.code(token.text, token.lang, token.escaped);\n continue;\n }\n case 'table':\n {\n header = '';\n\n // header\n cell = '';\n l2 = token.header.length;\n for (j = 0; j < l2; j++) {\n cell += this.renderer.tablecell(this.parseInline(token.header[j].tokens), {\n header: true,\n align: token.align[j]\n });\n }\n header += this.renderer.tablerow(cell);\n body = '';\n l2 = token.rows.length;\n for (j = 0; j < l2; j++) {\n row = token.rows[j];\n cell = '';\n l3 = row.length;\n for (k = 0; k < l3; k++) {\n cell += this.renderer.tablecell(this.parseInline(row[k].tokens), {\n header: false,\n align: token.align[k]\n });\n }\n body += this.renderer.tablerow(cell);\n }\n out += this.renderer.table(header, body);\n continue;\n }\n case 'blockquote':\n {\n body = this.parse(token.tokens);\n out += this.renderer.blockquote(body);\n continue;\n }\n case 'list':\n {\n ordered = token.ordered;\n start = token.start;\n loose = token.loose;\n l2 = token.items.length;\n body = '';\n for (j = 0; j < l2; j++) {\n item = token.items[j];\n checked = item.checked;\n task = item.task;\n itemBody = '';\n if (item.task) {\n checkbox = this.renderer.checkbox(checked);\n if (loose) {\n if (item.tokens.length > 0 && item.tokens[0].type === 'paragraph') {\n item.tokens[0].text = checkbox + ' ' + item.tokens[0].text;\n if (item.tokens[0].tokens && item.tokens[0].tokens.length > 0 && item.tokens[0].tokens[0].type === 'text') {\n item.tokens[0].tokens[0].text = checkbox + ' ' + item.tokens[0].tokens[0].text;\n }\n } else {\n item.tokens.unshift({\n type: 'text',\n text: checkbox\n });\n }\n } else {\n itemBody += checkbox;\n }\n }\n itemBody += this.parse(item.tokens, loose);\n body += this.renderer.listitem(itemBody, task, checked);\n }\n out += this.renderer.list(body, ordered, start);\n continue;\n }\n case 'html':\n {\n // TODO parse inline content if parameter markdown=1\n out += this.renderer.html(token.text);\n continue;\n }\n case 'paragraph':\n {\n out += this.renderer.paragraph(this.parseInline(token.tokens));\n continue;\n }\n case 'text':\n {\n body = token.tokens ? this.parseInline(token.tokens) : token.text;\n while (i + 1 < l && tokens[i + 1].type === 'text') {\n token = tokens[++i];\n body += '\\n' + (token.tokens ? this.parseInline(token.tokens) : token.text);\n }\n out += top ? this.renderer.paragraph(body) : body;\n continue;\n }\n default:\n {\n var errMsg = 'Token with \"' + token.type + '\" type was not found.';\n if (this.options.silent) {\n console.error(errMsg);\n return;\n } else {\n throw new Error(errMsg);\n }\n }\n }\n }\n return out;\n }\n\n /**\n * Parse Inline Tokens\n */;\n _proto.parseInline = function parseInline(tokens, renderer) {\n renderer = renderer || this.renderer;\n var out = '',\n i,\n token,\n ret;\n var l = tokens.length;\n for (i = 0; i < l; i++) {\n token = tokens[i];\n\n // Run any renderer extensions\n if (this.options.extensions && this.options.extensions.renderers && this.options.extensions.renderers[token.type]) {\n ret = this.options.extensions.renderers[token.type].call({\n parser: this\n }, token);\n if (ret !== false || !['escape', 'html', 'link', 'image', 'strong', 'em', 'codespan', 'br', 'del', 'text'].includes(token.type)) {\n out += ret || '';\n continue;\n }\n }\n switch (token.type) {\n case 'escape':\n {\n out += renderer.text(token.text);\n break;\n }\n case 'html':\n {\n out += renderer.html(token.text);\n break;\n }\n case 'link':\n {\n out += renderer.link(token.href, token.title, this.parseInline(token.tokens, renderer));\n break;\n }\n case 'image':\n {\n out += renderer.image(token.href, token.title, token.text);\n break;\n }\n case 'strong':\n {\n out += renderer.strong(this.parseInline(token.tokens, renderer));\n break;\n }\n case 'em':\n {\n out += renderer.em(this.parseInline(token.tokens, renderer));\n break;\n }\n case 'codespan':\n {\n out += renderer.codespan(token.text);\n break;\n }\n case 'br':\n {\n out += renderer.br();\n break;\n }\n case 'del':\n {\n out += renderer.del(this.parseInline(token.tokens, renderer));\n break;\n }\n case 'text':\n {\n out += renderer.text(token.text);\n break;\n }\n default:\n {\n var errMsg = 'Token with \"' + token.type + '\" type was not found.';\n if (this.options.silent) {\n console.error(errMsg);\n return;\n } else {\n throw new Error(errMsg);\n }\n }\n }\n }\n return out;\n };\n return Parser;\n}();\n\nvar Hooks = /*#__PURE__*/function () {\n function Hooks(options) {\n this.options = options || exports.defaults;\n }\n var _proto = Hooks.prototype;\n /**\n * Process markdown before marked\n */\n _proto.preprocess = function preprocess(markdown) {\n return markdown;\n }\n\n /**\n * Process HTML after marked is finished\n */;\n _proto.postprocess = function postprocess(html) {\n return html;\n };\n return Hooks;\n}();\nHooks.passThroughHooks = new Set(['preprocess', 'postprocess']);\n\nfunction onError(silent, async, callback) {\n return function (e) {\n e.message += '\\nPlease report this to https://github.com/markedjs/marked.';\n if (silent) {\n var msg = '

    An error occurred:

    ' + escape(e.message + '', true) + '
    ';\n if (async) {\n return Promise.resolve(msg);\n }\n if (callback) {\n callback(null, msg);\n return;\n }\n return msg;\n }\n if (async) {\n return Promise.reject(e);\n }\n if (callback) {\n callback(e);\n return;\n }\n throw e;\n };\n}\nfunction parseMarkdown(lexer, parser) {\n return function (src, opt, callback) {\n if (typeof opt === 'function') {\n callback = opt;\n opt = null;\n }\n var origOpt = _extends({}, opt);\n opt = _extends({}, marked.defaults, origOpt);\n var throwError = onError(opt.silent, opt.async, callback);\n\n // throw error in case of non string input\n if (typeof src === 'undefined' || src === null) {\n return throwError(new Error('marked(): input parameter is undefined or null'));\n }\n if (typeof src !== 'string') {\n return throwError(new Error('marked(): input parameter is of type ' + Object.prototype.toString.call(src) + ', string expected'));\n }\n checkSanitizeDeprecation(opt);\n if (opt.hooks) {\n opt.hooks.options = opt;\n }\n if (callback) {\n var highlight = opt.highlight;\n var tokens;\n try {\n if (opt.hooks) {\n src = opt.hooks.preprocess(src);\n }\n tokens = lexer(src, opt);\n } catch (e) {\n return throwError(e);\n }\n var done = function done(err) {\n var out;\n if (!err) {\n try {\n if (opt.walkTokens) {\n marked.walkTokens(tokens, opt.walkTokens);\n }\n out = parser(tokens, opt);\n if (opt.hooks) {\n out = opt.hooks.postprocess(out);\n }\n } catch (e) {\n err = e;\n }\n }\n opt.highlight = highlight;\n return err ? throwError(err) : callback(null, out);\n };\n if (!highlight || highlight.length < 3) {\n return done();\n }\n delete opt.highlight;\n if (!tokens.length) return done();\n var pending = 0;\n marked.walkTokens(tokens, function (token) {\n if (token.type === 'code') {\n pending++;\n setTimeout(function () {\n highlight(token.text, token.lang, function (err, code) {\n if (err) {\n return done(err);\n }\n if (code != null && code !== token.text) {\n token.text = code;\n token.escaped = true;\n }\n pending--;\n if (pending === 0) {\n done();\n }\n });\n }, 0);\n }\n });\n if (pending === 0) {\n done();\n }\n return;\n }\n if (opt.async) {\n return Promise.resolve(opt.hooks ? opt.hooks.preprocess(src) : src).then(function (src) {\n return lexer(src, opt);\n }).then(function (tokens) {\n return opt.walkTokens ? Promise.all(marked.walkTokens(tokens, opt.walkTokens)).then(function () {\n return tokens;\n }) : tokens;\n }).then(function (tokens) {\n return parser(tokens, opt);\n }).then(function (html) {\n return opt.hooks ? opt.hooks.postprocess(html) : html;\n })[\"catch\"](throwError);\n }\n try {\n if (opt.hooks) {\n src = opt.hooks.preprocess(src);\n }\n var _tokens = lexer(src, opt);\n if (opt.walkTokens) {\n marked.walkTokens(_tokens, opt.walkTokens);\n }\n var html = parser(_tokens, opt);\n if (opt.hooks) {\n html = opt.hooks.postprocess(html);\n }\n return html;\n } catch (e) {\n return throwError(e);\n }\n };\n}\n\n/**\n * Marked\n */\nfunction marked(src, opt, callback) {\n return parseMarkdown(Lexer.lex, Parser.parse)(src, opt, callback);\n}\n\n/**\n * Options\n */\n\nmarked.options = marked.setOptions = function (opt) {\n marked.defaults = _extends({}, marked.defaults, opt);\n changeDefaults(marked.defaults);\n return marked;\n};\nmarked.getDefaults = getDefaults;\nmarked.defaults = exports.defaults;\n\n/**\n * Use Extension\n */\n\nmarked.use = function () {\n var extensions = marked.defaults.extensions || {\n renderers: {},\n childTokens: {}\n };\n for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {\n args[_key] = arguments[_key];\n }\n args.forEach(function (pack) {\n // copy options to new object\n var opts = _extends({}, pack);\n\n // set async to true if it was set to true before\n opts.async = marked.defaults.async || opts.async || false;\n\n // ==-- Parse \"addon\" extensions --== //\n if (pack.extensions) {\n pack.extensions.forEach(function (ext) {\n if (!ext.name) {\n throw new Error('extension name required');\n }\n if (ext.renderer) {\n // Renderer extensions\n var prevRenderer = extensions.renderers[ext.name];\n if (prevRenderer) {\n // Replace extension with func to run new extension but fall back if false\n extensions.renderers[ext.name] = function () {\n for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {\n args[_key2] = arguments[_key2];\n }\n var ret = ext.renderer.apply(this, args);\n if (ret === false) {\n ret = prevRenderer.apply(this, args);\n }\n return ret;\n };\n } else {\n extensions.renderers[ext.name] = ext.renderer;\n }\n }\n if (ext.tokenizer) {\n // Tokenizer Extensions\n if (!ext.level || ext.level !== 'block' && ext.level !== 'inline') {\n throw new Error(\"extension level must be 'block' or 'inline'\");\n }\n if (extensions[ext.level]) {\n extensions[ext.level].unshift(ext.tokenizer);\n } else {\n extensions[ext.level] = [ext.tokenizer];\n }\n if (ext.start) {\n // Function to check for start of token\n if (ext.level === 'block') {\n if (extensions.startBlock) {\n extensions.startBlock.push(ext.start);\n } else {\n extensions.startBlock = [ext.start];\n }\n } else if (ext.level === 'inline') {\n if (extensions.startInline) {\n extensions.startInline.push(ext.start);\n } else {\n extensions.startInline = [ext.start];\n }\n }\n }\n }\n if (ext.childTokens) {\n // Child tokens to be visited by walkTokens\n extensions.childTokens[ext.name] = ext.childTokens;\n }\n });\n opts.extensions = extensions;\n }\n\n // ==-- Parse \"overwrite\" extensions --== //\n if (pack.renderer) {\n (function () {\n var renderer = marked.defaults.renderer || new Renderer();\n var _loop = function _loop(prop) {\n var prevRenderer = renderer[prop];\n // Replace renderer with func to run extension, but fall back if false\n renderer[prop] = function () {\n for (var _len3 = arguments.length, args = new Array(_len3), _key3 = 0; _key3 < _len3; _key3++) {\n args[_key3] = arguments[_key3];\n }\n var ret = pack.renderer[prop].apply(renderer, args);\n if (ret === false) {\n ret = prevRenderer.apply(renderer, args);\n }\n return ret;\n };\n };\n for (var prop in pack.renderer) {\n _loop(prop);\n }\n opts.renderer = renderer;\n })();\n }\n if (pack.tokenizer) {\n (function () {\n var tokenizer = marked.defaults.tokenizer || new Tokenizer();\n var _loop2 = function _loop2(prop) {\n var prevTokenizer = tokenizer[prop];\n // Replace tokenizer with func to run extension, but fall back if false\n tokenizer[prop] = function () {\n for (var _len4 = arguments.length, args = new Array(_len4), _key4 = 0; _key4 < _len4; _key4++) {\n args[_key4] = arguments[_key4];\n }\n var ret = pack.tokenizer[prop].apply(tokenizer, args);\n if (ret === false) {\n ret = prevTokenizer.apply(tokenizer, args);\n }\n return ret;\n };\n };\n for (var prop in pack.tokenizer) {\n _loop2(prop);\n }\n opts.tokenizer = tokenizer;\n })();\n }\n\n // ==-- Parse Hooks extensions --== //\n if (pack.hooks) {\n (function () {\n var hooks = marked.defaults.hooks || new Hooks();\n var _loop3 = function _loop3(prop) {\n var prevHook = hooks[prop];\n if (Hooks.passThroughHooks.has(prop)) {\n hooks[prop] = function (arg) {\n if (marked.defaults.async) {\n return Promise.resolve(pack.hooks[prop].call(hooks, arg)).then(function (ret) {\n return prevHook.call(hooks, ret);\n });\n }\n var ret = pack.hooks[prop].call(hooks, arg);\n return prevHook.call(hooks, ret);\n };\n } else {\n hooks[prop] = function () {\n for (var _len5 = arguments.length, args = new Array(_len5), _key5 = 0; _key5 < _len5; _key5++) {\n args[_key5] = arguments[_key5];\n }\n var ret = pack.hooks[prop].apply(hooks, args);\n if (ret === false) {\n ret = prevHook.apply(hooks, args);\n }\n return ret;\n };\n }\n };\n for (var prop in pack.hooks) {\n _loop3(prop);\n }\n opts.hooks = hooks;\n })();\n }\n\n // ==-- Parse WalkTokens extensions --== //\n if (pack.walkTokens) {\n var _walkTokens = marked.defaults.walkTokens;\n opts.walkTokens = function (token) {\n var values = [];\n values.push(pack.walkTokens.call(this, token));\n if (_walkTokens) {\n values = values.concat(_walkTokens.call(this, token));\n }\n return values;\n };\n }\n marked.setOptions(opts);\n });\n};\n\n/**\n * Run callback for every token\n */\n\nmarked.walkTokens = function (tokens, callback) {\n var values = [];\n var _loop4 = function _loop4() {\n var token = _step.value;\n values = values.concat(callback.call(marked, token));\n switch (token.type) {\n case 'table':\n {\n for (var _iterator2 = _createForOfIteratorHelperLoose(token.header), _step2; !(_step2 = _iterator2()).done;) {\n var cell = _step2.value;\n values = values.concat(marked.walkTokens(cell.tokens, callback));\n }\n for (var _iterator3 = _createForOfIteratorHelperLoose(token.rows), _step3; !(_step3 = _iterator3()).done;) {\n var row = _step3.value;\n for (var _iterator4 = _createForOfIteratorHelperLoose(row), _step4; !(_step4 = _iterator4()).done;) {\n var _cell = _step4.value;\n values = values.concat(marked.walkTokens(_cell.tokens, callback));\n }\n }\n break;\n }\n case 'list':\n {\n values = values.concat(marked.walkTokens(token.items, callback));\n break;\n }\n default:\n {\n if (marked.defaults.extensions && marked.defaults.extensions.childTokens && marked.defaults.extensions.childTokens[token.type]) {\n // Walk any extensions\n marked.defaults.extensions.childTokens[token.type].forEach(function (childTokens) {\n values = values.concat(marked.walkTokens(token[childTokens], callback));\n });\n } else if (token.tokens) {\n values = values.concat(marked.walkTokens(token.tokens, callback));\n }\n }\n }\n };\n for (var _iterator = _createForOfIteratorHelperLoose(tokens), _step; !(_step = _iterator()).done;) {\n _loop4();\n }\n return values;\n};\n\n/**\n * Parse Inline\n * @param {string} src\n */\nmarked.parseInline = parseMarkdown(Lexer.lexInline, Parser.parseInline);\n\n/**\n * Expose\n */\nmarked.Parser = Parser;\nmarked.parser = Parser.parse;\nmarked.Renderer = Renderer;\nmarked.TextRenderer = TextRenderer;\nmarked.Lexer = Lexer;\nmarked.lexer = Lexer.lex;\nmarked.Tokenizer = Tokenizer;\nmarked.Slugger = Slugger;\nmarked.Hooks = Hooks;\nmarked.parse = marked;\nvar options = marked.options;\nvar setOptions = marked.setOptions;\nvar use = marked.use;\nvar walkTokens = marked.walkTokens;\nvar parseInline = marked.parseInline;\nvar parse = marked;\nvar parser = Parser.parse;\nvar lexer = Lexer.lex;\n\nexports.Hooks = Hooks;\nexports.Lexer = Lexer;\nexports.Parser = Parser;\nexports.Renderer = Renderer;\nexports.Slugger = Slugger;\nexports.TextRenderer = TextRenderer;\nexports.Tokenizer = Tokenizer;\nexports.getDefaults = getDefaults;\nexports.lexer = lexer;\nexports.marked = marked;\nexports.options = options;\nexports.parse = parse;\nexports.parseInline = parseInline;\nexports.parser = parser;\nexports.setOptions = setOptions;\nexports.use = use;\nexports.walkTokens = walkTokens;\n", "'use strict';\nvar CodeMirror = require('codemirror');\nrequire('codemirror/addon/edit/continuelist.js');\nrequire('./codemirror/tablist');\nrequire('codemirror/addon/display/fullscreen.js');\nrequire('codemirror/mode/markdown/markdown.js');\nrequire('codemirror/addon/mode/overlay.js');\nrequire('codemirror/addon/display/placeholder.js');\nrequire('codemirror/addon/display/autorefresh.js');\nrequire('codemirror/addon/selection/mark-selection.js');\nrequire('codemirror/addon/search/searchcursor.js');\nrequire('codemirror/mode/gfm/gfm.js');\nrequire('codemirror/mode/xml/xml.js');\nvar CodeMirrorSpellChecker = require('codemirror-spell-checker');\nvar marked = require('marked').marked;\n\n\n// Some variables\nvar isMac = /Mac/.test(navigator.platform);\nvar anchorToExternalRegex = new RegExp(/()+?/g);\n\n// Mapping of actions that can be bound to keyboard shortcuts or toolbar buttons\nvar bindings = {\n 'toggleBold': toggleBold,\n 'toggleItalic': toggleItalic,\n 'drawLink': drawLink,\n 'toggleHeadingSmaller': toggleHeadingSmaller,\n 'toggleHeadingBigger': toggleHeadingBigger,\n 'drawImage': drawImage,\n 'toggleBlockquote': toggleBlockquote,\n 'toggleOrderedList': toggleOrderedList,\n 'toggleUnorderedList': toggleUnorderedList,\n 'toggleCheckList': toggleCheckList,\n 'toggleCodeBlock': toggleCodeBlock,\n 'togglePreview': togglePreview,\n 'toggleStrikethrough': toggleStrikethrough,\n 'toggleHeading1': toggleHeading1,\n 'toggleHeading2': toggleHeading2,\n 'toggleHeading3': toggleHeading3,\n 'toggleHeading4': toggleHeading4,\n 'toggleHeading5': toggleHeading5,\n 'toggleHeading6': toggleHeading6,\n 'cleanBlock': cleanBlock,\n 'drawTable': drawTable,\n 'drawHorizontalRule': drawHorizontalRule,\n 'undo': undo,\n 'redo': redo,\n 'toggleSideBySide': toggleSideBySide,\n 'toggleFullScreen': toggleFullScreen,\n};\n\nvar shortcuts = {\n 'toggleBold': 'Cmd-B',\n 'toggleItalic': 'Cmd-I',\n 'drawLink': 'Cmd-K',\n 'toggleHeadingSmaller': 'Cmd-H',\n 'toggleHeadingBigger': 'Shift-Cmd-H',\n 'toggleHeading1': 'Ctrl+Alt+1',\n 'toggleHeading2': 'Ctrl+Alt+2',\n 'toggleHeading3': 'Ctrl+Alt+3',\n 'toggleHeading4': 'Ctrl+Alt+4',\n 'toggleHeading5': 'Ctrl+Alt+5',\n 'toggleHeading6': 'Ctrl+Alt+6',\n 'cleanBlock': 'Cmd-E',\n 'drawImage': 'Cmd-Alt-I',\n 'toggleBlockquote': 'Cmd-\\'',\n 'toggleOrderedList': 'Cmd-Alt-L',\n 'toggleUnorderedList': 'Cmd-L',\n 'toggleCheckList': 'Shift-Cmd-L',\n 'toggleCodeBlock': 'Cmd-Alt-C',\n 'togglePreview': 'Cmd-P',\n 'toggleSideBySide': 'F9',\n 'toggleFullScreen': 'F11',\n};\n\nvar getBindingName = function (f) {\n for (var key in bindings) {\n if (bindings[key] === f) {\n return key;\n }\n }\n return null;\n};\n\nvar isMobile = function () {\n var check = false;\n (function (a) {\n if (/(android|bb\\d+|meego).+mobile|avantgo|bada\\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\\.(browser|link)|vodafone|wap|windows ce|xda|xiino|android|ipad|playbook|silk/i.test(a) || /1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw-(n|u)|c55\\/|capi|ccwa|cdm-|cell|chtm|cldc|cmd-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc-s|devi|dica|dmob|do(c|p)o|ds(12|-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(-|_)|g1 u|g560|gene|gf-5|g-mo|go(\\.w|od)|gr(ad|un)|haie|hcit|hd-(m|p|t)|hei-|hi(pt|ta)|hp( i|ip)|hs-c|ht(c(-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i-(20|go|ma)|i230|iac( |-|\\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\\/)|klon|kpt |kwc-|kyo(c|k)|le(no|xi)|lg( g|\\/(k|l|u)|50|54|-[a-w])|libw|lynx|m1-w|m3ga|m50\\/|ma(te|ui|xo)|mc(01|21|ca)|m-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|-([1-8]|c))|phil|pire|pl(ay|uc)|pn-2|po(ck|rt|se)|prox|psio|pt-g|qa-a|qc(07|12|21|32|60|-[2-7]|i-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h-|oo|p-)|sdk\\/|se(c(-|0|1)|47|mc|nd|ri)|sgh-|shar|sie(-|m)|sk-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h-|v-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl-|tdg-|tel(i|m)|tim-|t-mo|to(pl|sh)|ts(70|m-|m3|m5)|tx-9|up(\\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas-|your|zeto|zte-/i.test(a.substr(0, 4))) check = true;\n })(navigator.userAgent || navigator.vendor || window.opera);\n return check;\n};\n\n/**\n * Modify HTML to add 'target=\"_blank\"' to links so they open in new tabs by default.\n * @param {string} htmlText - HTML to be modified.\n * @return {string} The modified HTML text.\n */\nfunction addAnchorTargetBlank(htmlText) {\n var match;\n while ((match = anchorToExternalRegex.exec(htmlText)) !== null) {\n // With only one capture group in the RegExp, we can safely take the first index from the match.\n var linkString = match[0];\n\n if (linkString.indexOf('target=') === -1) {\n var fixedLinkString = linkString.replace(/>$/, ' target=\"_blank\">');\n htmlText = htmlText.replace(linkString, fixedLinkString);\n }\n }\n return htmlText;\n}\n\n/**\n * Modify HTML to remove the list-style when rendering checkboxes.\n * @param {string} htmlText - HTML to be modified.\n * @return {string} The modified HTML text.\n */\nfunction removeListStyleWhenCheckbox(htmlText) {\n\n var parser = new DOMParser();\n var htmlDoc = parser.parseFromString(htmlText, 'text/html');\n var listItems = htmlDoc.getElementsByTagName('li');\n\n for (var i = 0; i < listItems.length; i++) {\n var listItem = listItems[i];\n\n for (var j = 0; j < listItem.children.length; j++) {\n var listItemChild = listItem.children[j];\n\n if (listItemChild instanceof HTMLInputElement && listItemChild.type === 'checkbox') {\n // From Github: margin: 0 .2em .25em -1.6em;\n listItem.style.marginLeft = '-1.5em';\n listItem.style.listStyleType = 'none';\n }\n }\n }\n\n return htmlDoc.documentElement.innerHTML;\n}\n\n/**\n * Fix shortcut. Mac use Command, others use Ctrl.\n */\nfunction fixShortcut(name) {\n if (isMac) {\n name = name.replace('Ctrl', 'Cmd');\n } else {\n name = name.replace('Cmd', 'Ctrl');\n }\n return name;\n}\n\n/**\n * Create dropdown block\n */\nfunction createToolbarDropdown(options, enableTooltips, shortcuts, parent) {\n var el = createToolbarButton(options, false, enableTooltips, shortcuts, 'button', parent);\n el.classList.add('easymde-dropdown');\n\n el.onclick = function () {\n el.focus();\n };\n\n var content = document.createElement('div');\n content.className = 'easymde-dropdown-content';\n for (var childrenIndex = 0; childrenIndex < options.children.length; childrenIndex++) {\n\n var child = options.children[childrenIndex];\n var childElement;\n\n if (typeof child === 'string' && child in toolbarBuiltInButtons) {\n childElement = createToolbarButton(toolbarBuiltInButtons[child], true, enableTooltips, shortcuts, 'button', parent);\n } else {\n childElement = createToolbarButton(child, true, enableTooltips, shortcuts, 'button', parent);\n }\n\n childElement.addEventListener('click', function (e) { e.stopPropagation(); }, false);\n content.appendChild(childElement);\n }\n el.appendChild(content);\n return el;\n}\n\n/**\n * Create button element for toolbar.\n */\nfunction createToolbarButton(options, enableActions, enableTooltips, shortcuts, markup, parent) {\n options = options || {};\n var el = document.createElement(markup);\n\n // Add 'custom' attributes as early as possible, so that 'official' attributes will never be overwritten.\n if (options.attributes) {\n for (var attribute in options.attributes) {\n if (Object.prototype.hasOwnProperty.call(options.attributes, attribute)) {\n el.setAttribute(attribute, options.attributes[attribute]);\n }\n }\n }\n\n var classNamePrefix = parent.options.toolbarButtonClassPrefix ? parent.options.toolbarButtonClassPrefix + '-' : '';\n el.className = classNamePrefix + options.name;\n el.setAttribute('type', markup);\n enableTooltips = (enableTooltips == undefined) ? true : enableTooltips;\n\n if (options.text) {\n el.innerText = options.text;\n }\n\n // Properly handle custom shortcuts\n if (options.name && options.name in shortcuts) {\n bindings[options.name] = options.action;\n }\n\n if (options.title && enableTooltips) {\n el.title = createTooltip(options.title, options.action, shortcuts);\n\n if (isMac) {\n el.title = el.title.replace('Ctrl', '\u2318');\n el.title = el.title.replace('Alt', '\u2325');\n }\n }\n\n if (options.title) {\n el.setAttribute('aria-label', options.title);\n }\n\n if (options.noDisable) {\n el.classList.add('no-disable');\n }\n\n if (options.noMobile) {\n el.classList.add('no-mobile');\n }\n\n // Prevent errors if there is no class name in custom options\n var classNameParts = [];\n if (typeof options.className !== 'undefined') {\n classNameParts = options.className.split(' ');\n }\n\n // Provide backwards compatibility with simple-markdown-editor by adding custom classes to the button.\n var iconClasses = [];\n for (var classNameIndex = 0; classNameIndex < classNameParts.length; classNameIndex++) {\n var classNamePart = classNameParts[classNameIndex];\n // Split icon classes from the button.\n // Regex will detect \"fa\", \"fas\", \"fa-something\" and \"fa-some-icon-1\", but not \"fanfare\".\n if (classNamePart.match(/^fa([srlb]|(-[\\w-]*)|$)/)) {\n iconClasses.push(classNamePart);\n } else {\n el.classList.add(classNamePart);\n }\n }\n\n el.tabIndex = -1;\n\n if (iconClasses.length > 0) {\n // Create icon element and append as a child to the button\n var icon = document.createElement('i');\n for (var iconClassIndex = 0; iconClassIndex < iconClasses.length; iconClassIndex++) {\n var iconClass = iconClasses[iconClassIndex];\n icon.classList.add(iconClass);\n }\n el.appendChild(icon);\n }\n\n // If there is a custom icon markup set, use that\n if (typeof options.icon !== 'undefined') {\n el.innerHTML = options.icon;\n }\n\n if (options.action && enableActions) {\n if (typeof options.action === 'function') {\n el.onclick = function (e) {\n e.preventDefault();\n options.action(parent);\n };\n } else if (typeof options.action === 'string') {\n el.onclick = function (e) {\n e.preventDefault();\n window.open(options.action, '_blank');\n };\n }\n }\n\n return el;\n}\n\nfunction createSep() {\n var el = document.createElement('i');\n el.className = 'separator';\n el.innerHTML = '|';\n return el;\n}\n\nfunction createTooltip(title, action, shortcuts) {\n var actionName;\n var tooltip = title;\n\n if (action) {\n actionName = getBindingName(action);\n if (shortcuts[actionName]) {\n tooltip += ' (' + fixShortcut(shortcuts[actionName]) + ')';\n }\n }\n\n return tooltip;\n}\n\n/**\n * The state of CodeMirror at the given position.\n */\nfunction getState(cm, pos) {\n pos = pos || cm.getCursor('start');\n var stat = cm.getTokenAt(pos);\n if (!stat.type) return {};\n\n var types = stat.type.split(' ');\n\n var ret = {},\n data, text;\n for (var i = 0; i < types.length; i++) {\n data = types[i];\n if (data === 'strong') {\n ret.bold = true;\n } else if (data === 'variable-2') {\n text = cm.getLine(pos.line);\n if (/^\\s*\\d+\\.\\s/.test(text)) {\n ret['ordered-list'] = true;\n } else if (/^\\s*- \\[[ xX]]\\s/.test(text)) {\n ret['check-list'] = true;\n } else {\n ret['unordered-list'] = true;\n }\n } else if (data === 'atom') {\n ret.quote = true;\n } else if (data === 'em') {\n ret.italic = true;\n } else if (data === 'quote') {\n ret.quote = true;\n } else if (data === 'strikethrough') {\n ret.strikethrough = true;\n } else if (data === 'comment') {\n ret.code = true;\n } else if (data === 'link' && !ret.image) {\n ret.link = true;\n } else if (data === 'image') {\n ret.image = true;\n } else if (data.match(/^header(-[1-6])?$/)) {\n ret[data.replace('header', 'heading')] = true;\n }\n }\n return ret;\n}\n\n\n// Saved overflow setting\nvar saved_overflow = '';\n\n/**\n * Toggle full screen of the editor.\n * @param {EasyMDE} editor\n */\nfunction toggleFullScreen(editor) {\n // Set fullscreen\n var cm = editor.codemirror;\n cm.setOption('fullScreen', !cm.getOption('fullScreen'));\n\n\n // Prevent scrolling on body during fullscreen active\n if (cm.getOption('fullScreen')) {\n saved_overflow = document.body.style.overflow;\n document.body.style.overflow = 'hidden';\n } else {\n document.body.style.overflow = saved_overflow;\n }\n\n var wrapper = cm.getWrapperElement();\n var sidebyside = wrapper.nextSibling;\n\n if (sidebyside.classList.contains('editor-preview-active-side')) {\n if (editor.options.sideBySideFullscreen === false) {\n // if side-by-side not-fullscreen ok, apply classes as needed\n var easyMDEContainer = wrapper.parentNode;\n if (cm.getOption('fullScreen')) {\n easyMDEContainer.classList.remove('sided--no-fullscreen');\n } else {\n easyMDEContainer.classList.add('sided--no-fullscreen');\n }\n } else {\n toggleSideBySide(editor);\n }\n }\n\n if (editor.options.onToggleFullScreen) {\n editor.options.onToggleFullScreen(cm.getOption('fullScreen') || false);\n }\n\n // Remove or set maxHeight\n if (typeof editor.options.maxHeight !== 'undefined') {\n if (cm.getOption('fullScreen')) {\n cm.getScrollerElement().style.removeProperty('height');\n sidebyside.style.removeProperty('height');\n } else {\n cm.getScrollerElement().style.height = editor.options.maxHeight;\n editor.setPreviewMaxHeight();\n }\n }\n\n // Update toolbar class\n editor.toolbar_div.classList.toggle('fullscreen');\n\n // Update toolbar button\n if (editor.toolbarElements && editor.toolbarElements.fullscreen) {\n var toolbarButton = editor.toolbarElements.fullscreen;\n toolbarButton.classList.toggle('active');\n }\n}\n\n\n/**\n * Action for toggling bold.\n * @param {EasyMDE} editor\n */\nfunction toggleBold(editor) {\n _toggleBlock(editor, 'bold', editor.options.blockStyles.bold);\n}\n\n\n/**\n * Action for toggling italic.\n * @param {EasyMDE} editor\n */\nfunction toggleItalic(editor) {\n _toggleBlock(editor, 'italic', editor.options.blockStyles.italic);\n}\n\n\n/**\n * Action for toggling strikethrough.\n * @param {EasyMDE} editor\n */\nfunction toggleStrikethrough(editor) {\n _toggleBlock(editor, 'strikethrough', '~~');\n}\n\n/**\n * Action for toggling code block.\n * @param {EasyMDE} editor\n */\nfunction toggleCodeBlock(editor) {\n var fenceCharsToInsert = editor.options.blockStyles.code;\n\n function fencing_line(line) {\n /* return true, if this is a ``` or ~~~ line */\n if (typeof line !== 'object') {\n throw 'fencing_line() takes a \\'line\\' object (not a line number, or line text). Got: ' + typeof line + ': ' + line;\n }\n return line.styles && line.styles[2] && line.styles[2].indexOf('formatting-code-block') !== -1;\n }\n\n function token_state(token) {\n // base goes an extra level deep when mode backdrops are used, e.g. spellchecker on\n return token.state.base.base || token.state.base;\n }\n\n function code_type(cm, line_num, line, firstTok, lastTok) {\n /*\n * Return \"single\", \"indented\", \"fenced\" or false\n *\n * cm and line_num are required. Others are optional for efficiency\n * To check in the middle of a line, pass in firstTok yourself.\n */\n line = line || cm.getLineHandle(line_num);\n firstTok = firstTok || cm.getTokenAt({\n line: line_num,\n ch: 1,\n });\n lastTok = lastTok || (!!line.text && cm.getTokenAt({\n line: line_num,\n ch: line.text.length - 1,\n }));\n var types = firstTok.type ? firstTok.type.split(' ') : [];\n if (lastTok && token_state(lastTok).indentedCode) {\n // have to check last char, since first chars of first line aren\"t marked as indented\n return 'indented';\n } else if (types.indexOf('comment') === -1) {\n // has to be after \"indented\" check, since first chars of first indented line aren\"t marked as such\n return false;\n } else if (token_state(firstTok).fencedChars || token_state(lastTok).fencedChars || fencing_line(line)) {\n return 'fenced';\n } else {\n return 'single';\n }\n }\n\n function insertFencingAtSelection(cm, cur_start, cur_end, fenceCharsToInsert) {\n var start_line_sel = cur_start.line + 1,\n end_line_sel = cur_end.line + 1,\n sel_multi = cur_start.line !== cur_end.line,\n repl_start = fenceCharsToInsert + '\\n',\n repl_end = '\\n' + fenceCharsToInsert;\n if (sel_multi) {\n end_line_sel++;\n }\n // handle last char including \\n or not\n if (sel_multi && cur_end.ch === 0) {\n repl_end = fenceCharsToInsert + '\\n';\n end_line_sel--;\n }\n _replaceSelection(cm, false, [repl_start, repl_end]);\n cm.setSelection({\n line: start_line_sel,\n ch: 0,\n }, {\n line: end_line_sel,\n ch: 0,\n });\n }\n\n var cm = editor.codemirror,\n cur_start = cm.getCursor('start'),\n cur_end = cm.getCursor('end'),\n tok = cm.getTokenAt({\n line: cur_start.line,\n ch: cur_start.ch || 1,\n }), // avoid ch 0 which is a cursor pos but not token\n line = cm.getLineHandle(cur_start.line),\n is_code = code_type(cm, cur_start.line, line, tok);\n var block_start, block_end, lineCount;\n\n if (is_code === 'single') {\n // similar to some EasyMDE _toggleBlock logic\n var start = line.text.slice(0, cur_start.ch).replace('`', ''),\n end = line.text.slice(cur_start.ch).replace('`', '');\n cm.replaceRange(start + end, {\n line: cur_start.line,\n ch: 0,\n }, {\n line: cur_start.line,\n ch: 99999999999999,\n });\n cur_start.ch--;\n if (cur_start !== cur_end) {\n cur_end.ch--;\n }\n cm.setSelection(cur_start, cur_end);\n cm.focus();\n } else if (is_code === 'fenced') {\n if (cur_start.line !== cur_end.line || cur_start.ch !== cur_end.ch) {\n // use selection\n\n // find the fenced line so we know what type it is (tilde, backticks, number of them)\n for (block_start = cur_start.line; block_start >= 0; block_start--) {\n line = cm.getLineHandle(block_start);\n if (fencing_line(line)) {\n break;\n }\n }\n var fencedTok = cm.getTokenAt({\n line: block_start,\n ch: 1,\n });\n var fence_chars = token_state(fencedTok).fencedChars;\n var start_text, start_line;\n var end_text, end_line;\n // check for selection going up against fenced lines, in which case we don't want to add more fencing\n if (fencing_line(cm.getLineHandle(cur_start.line))) {\n start_text = '';\n start_line = cur_start.line;\n } else if (fencing_line(cm.getLineHandle(cur_start.line - 1))) {\n start_text = '';\n start_line = cur_start.line - 1;\n } else {\n start_text = fence_chars + '\\n';\n start_line = cur_start.line;\n }\n if (fencing_line(cm.getLineHandle(cur_end.line))) {\n end_text = '';\n end_line = cur_end.line;\n if (cur_end.ch === 0) {\n end_line += 1;\n }\n } else if (cur_end.ch !== 0 && fencing_line(cm.getLineHandle(cur_end.line + 1))) {\n end_text = '';\n end_line = cur_end.line + 1;\n } else {\n end_text = fence_chars + '\\n';\n end_line = cur_end.line + 1;\n }\n if (cur_end.ch === 0) {\n // full last line selected, putting cursor at beginning of next\n end_line -= 1;\n }\n cm.operation(function () {\n // end line first, so that line numbers don't change\n cm.replaceRange(end_text, {\n line: end_line,\n ch: 0,\n }, {\n line: end_line + (end_text ? 0 : 1),\n ch: 0,\n });\n cm.replaceRange(start_text, {\n line: start_line,\n ch: 0,\n }, {\n line: start_line + (start_text ? 0 : 1),\n ch: 0,\n });\n });\n cm.setSelection({\n line: start_line + (start_text ? 1 : 0),\n ch: 0,\n }, {\n line: end_line + (start_text ? 1 : -1),\n ch: 0,\n });\n cm.focus();\n } else {\n // no selection, search for ends of this fenced block\n var search_from = cur_start.line;\n if (fencing_line(cm.getLineHandle(cur_start.line))) { // gets a little tricky if cursor is right on a fenced line\n if (code_type(cm, cur_start.line + 1) === 'fenced') {\n block_start = cur_start.line;\n search_from = cur_start.line + 1; // for searching for \"end\"\n } else {\n block_end = cur_start.line;\n search_from = cur_start.line - 1; // for searching for \"start\"\n }\n }\n if (block_start === undefined) {\n for (block_start = search_from; block_start >= 0; block_start--) {\n line = cm.getLineHandle(block_start);\n if (fencing_line(line)) {\n break;\n }\n }\n }\n if (block_end === undefined) {\n lineCount = cm.lineCount();\n for (block_end = search_from; block_end < lineCount; block_end++) {\n line = cm.getLineHandle(block_end);\n if (fencing_line(line)) {\n break;\n }\n }\n }\n cm.operation(function () {\n cm.replaceRange('', {\n line: block_start,\n ch: 0,\n }, {\n line: block_start + 1,\n ch: 0,\n });\n cm.replaceRange('', {\n line: block_end - 1,\n ch: 0,\n }, {\n line: block_end,\n ch: 0,\n });\n });\n cm.focus();\n }\n } else if (is_code === 'indented') {\n if (cur_start.line !== cur_end.line || cur_start.ch !== cur_end.ch) {\n // use selection\n block_start = cur_start.line;\n block_end = cur_end.line;\n if (cur_end.ch === 0) {\n block_end--;\n }\n } else {\n // no selection, search for ends of this indented block\n for (block_start = cur_start.line; block_start >= 0; block_start--) {\n line = cm.getLineHandle(block_start);\n if (line.text.match(/^\\s*$/)) {\n // empty or all whitespace - keep going\n continue;\n } else {\n if (code_type(cm, block_start, line) !== 'indented') {\n block_start += 1;\n break;\n }\n }\n }\n lineCount = cm.lineCount();\n for (block_end = cur_start.line; block_end < lineCount; block_end++) {\n line = cm.getLineHandle(block_end);\n if (line.text.match(/^\\s*$/)) {\n // empty or all whitespace - keep going\n continue;\n } else {\n if (code_type(cm, block_end, line) !== 'indented') {\n block_end -= 1;\n break;\n }\n }\n }\n }\n // if we are going to un-indent based on a selected set of lines, and the next line is indented too, we need to\n // insert a blank line so that the next line(s) continue to be indented code\n var next_line = cm.getLineHandle(block_end + 1),\n next_line_last_tok = next_line && cm.getTokenAt({\n line: block_end + 1,\n ch: next_line.text.length - 1,\n }),\n next_line_indented = next_line_last_tok && token_state(next_line_last_tok).indentedCode;\n if (next_line_indented) {\n cm.replaceRange('\\n', {\n line: block_end + 1,\n ch: 0,\n });\n }\n\n for (var i = block_start; i <= block_end; i++) {\n cm.indentLine(i, 'subtract'); // TODO: this doesn't get tracked in the history, so can't be undone :(\n }\n cm.focus();\n } else {\n // insert code formatting\n var no_sel_and_starting_of_line = (cur_start.line === cur_end.line && cur_start.ch === cur_end.ch && cur_start.ch === 0);\n var sel_multi = cur_start.line !== cur_end.line;\n if (no_sel_and_starting_of_line || sel_multi) {\n insertFencingAtSelection(cm, cur_start, cur_end, fenceCharsToInsert);\n } else {\n _replaceSelection(cm, false, ['`', '`']);\n }\n }\n}\n\n/**\n * Action for toggling blockquote.\n */\nfunction toggleBlockquote(editor) {\n _toggleLine(editor.codemirror, 'quote');\n}\n\n/**\n * Action for toggling heading size: normal -> h1 -> h2 -> h3 -> h4 -> h5 -> h6 -> normal\n */\nfunction toggleHeadingSmaller(editor) {\n _toggleHeading(editor.codemirror, 'smaller');\n}\n\n/**\n * Action for toggling heading size: normal -> h6 -> h5 -> h4 -> h3 -> h2 -> h1 -> normal\n */\nfunction toggleHeadingBigger(editor) {\n _toggleHeading(editor.codemirror, 'bigger');\n}\n\n/**\n * Action for toggling heading size 1\n */\nfunction toggleHeading1(editor) {\n _toggleHeading(editor.codemirror, undefined, 1);\n}\n\n/**\n * Action for toggling heading size 2\n */\nfunction toggleHeading2(editor) {\n _toggleHeading(editor.codemirror, undefined, 2);\n}\n\n/**\n * Action for toggling heading size 3\n */\nfunction toggleHeading3(editor) {\n _toggleHeading(editor.codemirror, undefined, 3);\n}\n\n/**\n * Action for toggling heading size 4\n */\nfunction toggleHeading4(editor) {\n _toggleHeading(editor.codemirror, undefined, 4);\n}\n\n/**\n * Action for toggling heading size 5\n */\nfunction toggleHeading5(editor) {\n _toggleHeading(editor.codemirror, undefined, 5);\n}\n\n/**\n * Action for toggling heading size 6\n */\nfunction toggleHeading6(editor) {\n _toggleHeading(editor.codemirror, undefined, 6);\n}\n\n\n/**\n * Action for toggling ul.\n */\nfunction toggleUnorderedList(editor) {\n var cm = editor.codemirror;\n\n var listStyle = '*'; // Default\n if (['-', '+', '*'].includes(editor.options.unorderedListStyle)) {\n listStyle = editor.options.unorderedListStyle;\n }\n\n _toggleLine(cm, 'unordered-list', listStyle);\n}\n\n\n/**\n * Action for toggling ol.\n */\nfunction toggleOrderedList(editor) {\n _toggleLine(editor.codemirror, 'ordered-list');\n}\n\nfunction toggleCheckList(editor) {\n _toggleLine(editor.codemirror, 'check-list');\n}\n\n/**\n * Action for clean block (remove headline, list, blockquote code, markers)\n */\nfunction cleanBlock(editor) {\n _cleanBlock(editor.codemirror);\n}\n\n/**\n * Action for drawing a link.\n * @param {EasyMDE} editor\n */\nfunction drawLink(editor) {\n var options = editor.options;\n var url = 'https://';\n if (options.promptURLs) {\n var result = prompt(options.promptTexts.link, url);\n if (!result) {\n return false;\n }\n url = escapePromptURL(result);\n }\n _toggleLink(editor, 'link', options.insertTexts.link, url);\n}\n\n/**\n * Action for drawing an img.\n * @param {EasyMDE} editor\n */\nfunction drawImage(editor) {\n var options = editor.options;\n var url = 'https://';\n if (options.promptURLs) {\n var result = prompt(options.promptTexts.image, url);\n if (!result) {\n return false;\n }\n url = escapePromptURL(result);\n }\n _toggleLink(editor, 'image', options.insertTexts.image, url);\n}\n\n/**\n * Encode and escape URLs to prevent breaking up rendered Markdown links.\n * @param {string} url The url of the link or image\n */\nfunction escapePromptURL(url) {\n return encodeURI(url).replace(/([\\\\()])/g, '\\\\$1');\n}\n\n/**\n * Action for opening the browse-file window to upload an image to a server.\n * @param {EasyMDE} editor The EasyMDE object\n */\nfunction drawUploadedImage(editor) {\n // TODO: Draw the image template with a fake url? ie: '![](importing foo.png...)'\n editor.openBrowseFileWindow();\n}\n\n/**\n * Action executed after an image have been successfully imported on the server.\n * @param {EasyMDE} editor The EasyMDE object\n * @param {string} url The url of the uploaded image\n */\nfunction afterImageUploaded(editor, url) {\n var cm = editor.codemirror;\n var stat = getState(cm);\n var options = editor.options;\n var imageName = url.substr(url.lastIndexOf('/') + 1);\n var ext = imageName.substring(imageName.lastIndexOf('.') + 1).replace(/\\?.*$/, '').toLowerCase();\n\n // Check if media is an image\n if (['png', 'jpg', 'jpeg', 'gif', 'svg', 'apng', 'avif', 'webp'].includes(ext)) {\n _replaceSelection(cm, stat.image, options.insertTexts.uploadedImage, url);\n } else {\n var text_link = options.insertTexts.link;\n text_link[0] = '[' + imageName;\n _replaceSelection(cm, stat.link, text_link, url);\n }\n\n // show uploaded image filename for 1000ms\n editor.updateStatusBar('upload-image', editor.options.imageTexts.sbOnUploaded.replace('#image_name#', imageName));\n setTimeout(function () {\n editor.updateStatusBar('upload-image', editor.options.imageTexts.sbInit);\n }, 1000);\n}\n\n/**\n * Action for drawing a table.\n * @param {EasyMDE} editor\n */\nfunction drawTable(editor) {\n var cm = editor.codemirror;\n var stat = getState(cm);\n var options = editor.options;\n _replaceSelection(cm, stat.table, options.insertTexts.table);\n}\n\n/**\n * Action for drawing a horizontal rule.\n * @param {EasyMDE} editor\n */\nfunction drawHorizontalRule(editor) {\n var cm = editor.codemirror;\n var stat = getState(cm);\n var options = editor.options;\n _replaceSelection(cm, stat.image, options.insertTexts.horizontalRule);\n}\n\n\n/**\n * Undo action.\n * @param {EasyMDE} editor\n */\nfunction undo(editor) {\n var cm = editor.codemirror;\n cm.undo();\n cm.focus();\n}\n\n\n/**\n * Redo action.\n * @param {EasyMDE} editor\n */\nfunction redo(editor) {\n var cm = editor.codemirror;\n cm.redo();\n cm.focus();\n}\n\n\n/**\n * Toggle side by side preview\n * @param {EasyMDE} editor\n */\nfunction toggleSideBySide(editor) {\n var cm = editor.codemirror;\n var wrapper = cm.getWrapperElement();\n var preview = wrapper.nextSibling;\n var toolbarButton = editor.toolbarElements && editor.toolbarElements['side-by-side'];\n var useSideBySideListener = false;\n\n var easyMDEContainer = wrapper.parentNode;\n\n if (preview.classList.contains('editor-preview-active-side')) {\n if (editor.options.sideBySideFullscreen === false) {\n // if side-by-side not-fullscreen ok, remove classes when hiding side\n easyMDEContainer.classList.remove('sided--no-fullscreen');\n }\n preview.classList.remove('editor-preview-active-side');\n if (toolbarButton) toolbarButton.classList.remove('active');\n wrapper.classList.remove('CodeMirror-sided');\n } else {\n // When the preview button is clicked for the first time,\n // give some time for the transition from editor.css to fire and the view to slide from right to left,\n // instead of just appearing.\n setTimeout(function () {\n if (!cm.getOption('fullScreen')) {\n if (editor.options.sideBySideFullscreen === false) {\n // if side-by-side not-fullscreen ok, add classes when not fullscreen and showing side\n easyMDEContainer.classList.add('sided--no-fullscreen');\n } else {\n toggleFullScreen(editor);\n }\n }\n preview.classList.add('editor-preview-active-side');\n }, 1);\n if (toolbarButton) toolbarButton.classList.add('active');\n wrapper.classList.add('CodeMirror-sided');\n useSideBySideListener = true;\n }\n\n // Hide normal preview if active\n var previewNormal = wrapper.lastChild;\n if (previewNormal.classList.contains('editor-preview-active')) {\n previewNormal.classList.remove('editor-preview-active');\n var toolbar = editor.toolbarElements.preview;\n var toolbar_div = editor.toolbar_div;\n toolbar.classList.remove('active');\n toolbar_div.classList.remove('disabled-for-preview');\n }\n\n var sideBySideRenderingFunction = function () {\n var newValue = editor.options.previewRender(editor.value(), preview);\n if (newValue != null) {\n preview.innerHTML = newValue;\n }\n };\n\n if (!cm.sideBySideRenderingFunction) {\n cm.sideBySideRenderingFunction = sideBySideRenderingFunction;\n }\n\n if (useSideBySideListener) {\n var newValue = editor.options.previewRender(editor.value(), preview);\n if (newValue != null) {\n preview.innerHTML = newValue;\n }\n cm.on('update', cm.sideBySideRenderingFunction);\n } else {\n cm.off('update', cm.sideBySideRenderingFunction);\n }\n\n // Refresh to fix selection being off (#309)\n cm.refresh();\n}\n\n\n/**\n * Preview action.\n * @param {EasyMDE} editor\n */\nfunction togglePreview(editor) {\n var cm = editor.codemirror;\n var wrapper = cm.getWrapperElement();\n var toolbar_div = editor.toolbar_div;\n var toolbar = editor.options.toolbar ? editor.toolbarElements.preview : false;\n var preview = wrapper.lastChild;\n\n // Turn off side by side if needed\n var sidebyside = cm.getWrapperElement().nextSibling;\n if (sidebyside.classList.contains('editor-preview-active-side'))\n toggleSideBySide(editor);\n\n if (!preview || !preview.classList.contains('editor-preview-full')) {\n\n preview = document.createElement('div');\n preview.className = 'editor-preview-full';\n\n if (editor.options.previewClass) {\n\n if (Array.isArray(editor.options.previewClass)) {\n for (var i = 0; i < editor.options.previewClass.length; i++) {\n preview.classList.add(editor.options.previewClass[i]);\n }\n\n } else if (typeof editor.options.previewClass === 'string') {\n preview.classList.add(editor.options.previewClass);\n }\n }\n\n wrapper.appendChild(preview);\n }\n\n if (preview.classList.contains('editor-preview-active')) {\n preview.classList.remove('editor-preview-active');\n if (toolbar) {\n toolbar.classList.remove('active');\n toolbar_div.classList.remove('disabled-for-preview');\n }\n } else {\n // When the preview button is clicked for the first time,\n // give some time for the transition from editor.css to fire and the view to slide from right to left,\n // instead of just appearing.\n setTimeout(function () {\n preview.classList.add('editor-preview-active');\n }, 1);\n if (toolbar) {\n toolbar.classList.add('active');\n toolbar_div.classList.add('disabled-for-preview');\n }\n }\n\n var preview_result = editor.options.previewRender(editor.value(), preview);\n if (preview_result !== null) {\n preview.innerHTML = preview_result;\n }\n\n}\n\nfunction _replaceSelection(cm, active, startEnd, url) {\n if (cm.getWrapperElement().lastChild.classList.contains('editor-preview-active'))\n return;\n\n var text;\n var start = startEnd[0];\n var end = startEnd[1];\n var startPoint = {},\n endPoint = {};\n Object.assign(startPoint, cm.getCursor('start'));\n Object.assign(endPoint, cm.getCursor('end'));\n if (url) {\n start = start.replace('#url#', url); // url is in start for upload-image\n end = end.replace('#url#', url);\n }\n if (active) {\n text = cm.getLine(startPoint.line);\n start = text.slice(0, startPoint.ch);\n end = text.slice(startPoint.ch);\n cm.replaceRange(start + end, {\n line: startPoint.line,\n ch: 0,\n });\n } else {\n text = cm.getSelection();\n cm.replaceSelection(start + text + end);\n\n startPoint.ch += start.length;\n if (startPoint !== endPoint) {\n endPoint.ch += start.length;\n }\n }\n cm.setSelection(startPoint, endPoint);\n cm.focus();\n}\n\n\nfunction _toggleHeading(cm, direction, size) {\n if (cm.getWrapperElement().lastChild.classList.contains('editor-preview-active'))\n return;\n\n var startPoint = cm.getCursor('start');\n var endPoint = cm.getCursor('end');\n for (var i = startPoint.line; i <= endPoint.line; i++) {\n (function (i) {\n var text = cm.getLine(i);\n var currHeadingLevel = text.search(/[^#]/);\n\n if (direction !== undefined) {\n if (currHeadingLevel <= 0) {\n if (direction == 'bigger') {\n text = '###### ' + text;\n } else {\n text = '# ' + text;\n }\n } else if (currHeadingLevel == 6 && direction == 'smaller') {\n text = text.substr(7);\n } else if (currHeadingLevel == 1 && direction == 'bigger') {\n text = text.substr(2);\n } else {\n if (direction == 'bigger') {\n text = text.substr(1);\n } else {\n text = '#' + text;\n }\n }\n } else {\n if (currHeadingLevel <= 0) {\n text = '#'.repeat(size) + ' ' + text;\n } else if (currHeadingLevel == size) {\n text = text.substr(currHeadingLevel + 1);\n } else {\n text = '#'.repeat(size) + ' ' + text.substr(currHeadingLevel + 1);\n }\n }\n\n cm.replaceRange(text, {\n line: i,\n ch: 0,\n }, {\n line: i,\n ch: 99999999999999,\n });\n })(i);\n }\n cm.focus();\n}\n\n\nfunction _toggleLine(cm, name, liststyle) {\n if (cm.getWrapperElement().lastChild.classList.contains('editor-preview-active'))\n return;\n\n var listRegexp = /^(\\s*)(\\*|-|\\+|\\d*\\.)(\\s+)/;\n var whitespacesRegexp = /^\\s*/;\n\n var stat = getState(cm);\n var startPoint = cm.getCursor('start');\n var endPoint = cm.getCursor('end');\n var repl = {\n 'quote': /^(\\s*)>\\s+/,\n 'unordered-list': listRegexp,\n 'ordered-list': listRegexp,\n 'check-list': /^(\\s*)(- \\[[ xX]])(\\s+)/,\n };\n\n var _getChar = function (name, i) {\n var map = {\n 'quote': '>',\n 'unordered-list': liststyle,\n 'ordered-list': '%%i.',\n 'check-list': '- [ ]',\n };\n\n return map[name].replace('%%i', i);\n };\n\n var _checkChar = function (name, char) {\n var map = {\n 'quote': '>',\n 'unordered-list': '\\\\' + liststyle,\n 'ordered-list': '\\\\d+.',\n 'check-list': '- \\\\[[ xX]]',\n };\n var rt = new RegExp(map[name]);\n\n return char && rt.test(char);\n };\n\n var _toggle = function (name, text, untoggleOnly) {\n var arr = listRegexp.exec(text);\n var char = _getChar(name, line);\n if (arr !== null) {\n if (_checkChar(name, arr[2])) {\n char = '';\n }\n text = arr[1] + char + arr[3] + text.replace(whitespacesRegexp, '').replace(repl[name], '$1');\n } else if (untoggleOnly == false) {\n text = char + ' ' + text;\n }\n return text;\n };\n\n var line = 1;\n var listTypes = ['unordered-list', 'ordered-list', 'check-list'];\n var currentType = Object.keys(stat)[0];\n // After selectAll the cursor's start sits at column 0, where getTokenAt\n // yields no type \u2014 stat comes back empty and currentType is undefined,\n // making the swap branch below unreachable. Fall back to detecting the\n // type from the first selected line's text.\n if (!listTypes.includes(currentType)) {\n var firstLineText = cm.getLine(startPoint.line);\n if (/^\\s*- \\[[ xX]]\\s/.test(firstLineText)) currentType = 'check-list';\n else if (/^\\s*\\d+\\.\\s/.test(firstLineText)) currentType = 'ordered-list';\n else if (/^\\s*[*\\-+]\\s/.test(firstLineText)) currentType = 'unordered-list';\n }\n for (var i = startPoint.line; i <= endPoint.line; i++) {\n (function (i) {\n var text = cm.getLine(i);\n if (stat[name]) {\n text = text.replace(repl[name], '$1');\n } else if ( listTypes.includes(currentType) && listTypes.includes(name) ) {\n text = text.replace(repl[currentType], '$1');\n text = _toggle(name, text, false);\n line += 1;\n } else {\n text = _toggle(name, text, false);\n line += 1;\n }\n cm.replaceRange(text, {\n line: i,\n ch: 0,\n }, {\n line: i,\n ch: 99999999999999,\n });\n })(i);\n }\n cm.focus();\n}\n\n/**\n * @param {EasyMDE} editor\n * @param {'link' | 'image'} type\n * @param {string} startEnd\n * @param {string} url\n */\nfunction _toggleLink(editor, type, startEnd, url) {\n if (!editor.codemirror || editor.isPreviewActive()) {\n return;\n }\n\n var cm = editor.codemirror;\n var stat = getState(cm);\n var active = stat[type];\n if (!active) {\n _replaceSelection(cm, active, startEnd, url);\n return;\n }\n\n var startPoint = cm.getCursor('start');\n var endPoint = cm.getCursor('end');\n var text = cm.getLine(startPoint.line);\n var start = text.slice(0, startPoint.ch);\n var end = text.slice(startPoint.ch);\n\n if (type == 'link') {\n start = start.replace(/(.*)[^!]\\[/, '$1');\n } else if (type == 'image') {\n start = start.replace(/(.*)!\\[$/, '$1');\n }\n end = end.replace(/]\\(.*?\\)/, '');\n\n cm.replaceRange(start + end, {\n line: startPoint.line,\n ch: 0,\n }, {\n line: startPoint.line,\n ch: 99999999999999,\n });\n\n startPoint.ch -= startEnd[0].length;\n if (startPoint !== endPoint) {\n endPoint.ch -= startEnd[0].length;\n }\n cm.setSelection(startPoint, endPoint);\n cm.focus();\n}\n\n/**\n * @param {EasyMDE} editor\n */\nfunction _toggleBlock(editor, type, start_chars, end_chars) {\n if (!editor.codemirror || editor.isPreviewActive()) {\n return;\n }\n\n end_chars = (typeof end_chars === 'undefined') ? start_chars : end_chars;\n var cm = editor.codemirror;\n var stat = getState(cm);\n\n var text;\n var start = start_chars;\n var end = end_chars;\n\n var startPoint = cm.getCursor('start');\n var endPoint = cm.getCursor('end');\n\n if (stat[type]) {\n text = cm.getLine(startPoint.line);\n start = text.slice(0, startPoint.ch);\n end = text.slice(startPoint.ch);\n if (type == 'bold') {\n start = start.replace(/(\\*\\*|__)(?![\\s\\S]*(\\*\\*|__))/, '');\n end = end.replace(/(\\*\\*|__)/, '');\n } else if (type == 'italic') {\n start = start.replace(/(\\*|_)(?![\\s\\S]*(\\*|_))/, '');\n end = end.replace(/(\\*|_)/, '');\n } else if (type == 'strikethrough') {\n start = start.replace(/(\\*\\*|~~)(?![\\s\\S]*(\\*\\*|~~))/, '');\n end = end.replace(/(\\*\\*|~~)/, '');\n }\n cm.replaceRange(start + end, {\n line: startPoint.line,\n ch: 0,\n }, {\n line: startPoint.line,\n ch: 99999999999999,\n });\n\n if (type == 'bold' || type == 'strikethrough') {\n startPoint.ch -= 2;\n if (startPoint !== endPoint) {\n endPoint.ch -= 2;\n }\n } else if (type == 'italic') {\n startPoint.ch -= 1;\n if (startPoint !== endPoint) {\n endPoint.ch -= 1;\n }\n }\n } else {\n text = cm.getSelection();\n if (type == 'bold') {\n text = text.split('**').join('');\n text = text.split('__').join('');\n } else if (type == 'italic') {\n text = text.split('*').join('');\n text = text.split('_').join('');\n } else if (type == 'strikethrough') {\n text = text.split('~~').join('');\n }\n cm.replaceSelection(start + text + end);\n\n startPoint.ch += start_chars.length;\n endPoint.ch = startPoint.ch + text.length;\n }\n\n cm.setSelection(startPoint, endPoint);\n cm.focus();\n}\n\nfunction _cleanBlock(cm) {\n if (cm.getWrapperElement().lastChild.classList.contains('editor-preview-active'))\n return;\n\n var startPoint = cm.getCursor('start');\n var endPoint = cm.getCursor('end');\n var text;\n\n for (var line = startPoint.line; line <= endPoint.line; line++) {\n text = cm.getLine(line);\n text = text.replace(/^[ ]*([# ]+|\\*|-|[> ]+|[0-9]+(.|\\)))[ ]*/, '');\n\n cm.replaceRange(text, {\n line: line,\n ch: 0,\n }, {\n line: line,\n ch: 99999999999999,\n });\n }\n}\n\n/**\n * Convert a number of bytes to a human-readable file size. If you desire\n * to add a space between the value and the unit, you need to add this space\n * to the given units.\n * @param bytes {number} A number of bytes, as integer. Ex: 421137\n * @param units {number[]} An array of human-readable units, ie. [' B', ' K', ' MB']\n * @returns string A human-readable file size. Ex: '412 KB'\n */\nfunction humanFileSize(bytes, units) {\n if (Math.abs(bytes) < 1024) {\n return '' + bytes + units[0];\n }\n var u = 0;\n do {\n bytes /= 1024;\n ++u;\n } while (Math.abs(bytes) >= 1024 && u < units.length);\n return '' + bytes.toFixed(1) + units[u];\n}\n\n// Merge the properties of one object into another.\nfunction _mergeProperties(target, source) {\n for (var property in source) {\n if (Object.prototype.hasOwnProperty.call(source, property)) {\n if (source[property] instanceof Array) {\n target[property] = source[property].concat(target[property] instanceof Array ? target[property] : []);\n } else if (\n source[property] !== null &&\n typeof source[property] === 'object' &&\n source[property].constructor === Object\n ) {\n target[property] = _mergeProperties(target[property] || {}, source[property]);\n } else {\n target[property] = source[property];\n }\n }\n }\n\n return target;\n}\n\n// Merge an arbitrary number of objects into one.\nfunction extend(target) {\n for (var i = 1; i < arguments.length; i++) {\n target = _mergeProperties(target, arguments[i]);\n }\n\n return target;\n}\n\n/* The right word count in respect for CJK. */\nfunction wordCount(data) {\n var pattern = /[a-zA-Z0-9_\\u00A0-\\u02AF\\u0392-\\u03c9\\u0410-\\u04F9]+|[\\u4E00-\\u9FFF\\u3400-\\u4dbf\\uf900-\\ufaff\\u3040-\\u309f\\uac00-\\ud7af]+/g;\n var m = data.match(pattern);\n var count = 0;\n if (m === null) return count;\n for (var i = 0; i < m.length; i++) {\n if (m[i].charCodeAt(0) >= 0x4E00) {\n count += m[i].length;\n } else {\n count += 1;\n }\n }\n return count;\n}\n\nvar iconClassMap = {\n 'bold': 'fa fa-bold',\n 'italic': 'fa fa-italic',\n 'strikethrough': 'fa fa-strikethrough',\n 'heading': 'fa fa-header fa-heading',\n 'heading-smaller': 'fa fa-header fa-heading header-smaller',\n 'heading-bigger': 'fa fa-header fa-heading header-bigger',\n 'heading-1': 'fa fa-header fa-heading header-1',\n 'heading-2': 'fa fa-header fa-heading header-2',\n 'heading-3': 'fa fa-header fa-heading header-3',\n 'code': 'fa fa-code',\n 'quote': 'fa fa-quote-left',\n 'ordered-list': 'fa fa-list-ol',\n 'unordered-list': 'fa fa-list-ul',\n 'check-list': 'fa fa-check-square-o',\n 'clean-block': 'fa fa-eraser',\n 'link': 'fa fa-link',\n 'image': 'fa fa-image',\n 'upload-image': 'fa fa-image',\n 'table': 'fa fa-table',\n 'horizontal-rule': 'fa fa-minus',\n 'preview': 'fa fa-eye',\n 'side-by-side': 'fa fa-columns',\n 'fullscreen': 'fa fa-arrows-alt',\n 'guide': 'fa fa-question-circle',\n 'undo': 'fa fa-undo',\n 'redo': 'fa fa-repeat fa-redo',\n};\n\nvar toolbarBuiltInButtons = {\n 'bold': {\n name: 'bold',\n action: toggleBold,\n className: iconClassMap['bold'],\n title: 'Bold',\n default: true,\n },\n 'italic': {\n name: 'italic',\n action: toggleItalic,\n className: iconClassMap['italic'],\n title: 'Italic',\n default: true,\n },\n 'strikethrough': {\n name: 'strikethrough',\n action: toggleStrikethrough,\n className: iconClassMap['strikethrough'],\n title: 'Strikethrough',\n },\n 'heading': {\n name: 'heading',\n action: toggleHeadingSmaller,\n className: iconClassMap['heading'],\n title: 'Heading',\n default: true,\n },\n 'heading-smaller': {\n name: 'heading-smaller',\n action: toggleHeadingSmaller,\n className: iconClassMap['heading-smaller'],\n title: 'Smaller Heading',\n },\n 'heading-bigger': {\n name: 'heading-bigger',\n action: toggleHeadingBigger,\n className: iconClassMap['heading-bigger'],\n title: 'Bigger Heading',\n },\n 'heading-1': {\n name: 'heading-1',\n action: toggleHeading1,\n className: iconClassMap['heading-1'],\n title: 'Big Heading',\n },\n 'heading-2': {\n name: 'heading-2',\n action: toggleHeading2,\n className: iconClassMap['heading-2'],\n title: 'Medium Heading',\n },\n 'heading-3': {\n name: 'heading-3',\n action: toggleHeading3,\n className: iconClassMap['heading-3'],\n title: 'Small Heading',\n },\n 'separator-1': {\n name: 'separator-1',\n },\n 'code': {\n name: 'code',\n action: toggleCodeBlock,\n className: iconClassMap['code'],\n title: 'Code',\n },\n 'quote': {\n name: 'quote',\n action: toggleBlockquote,\n className: iconClassMap['quote'],\n title: 'Quote',\n default: true,\n },\n 'unordered-list': {\n name: 'unordered-list',\n action: toggleUnorderedList,\n className: iconClassMap['unordered-list'],\n title: 'Generic List',\n default: true,\n },\n 'ordered-list': {\n name: 'ordered-list',\n action: toggleOrderedList,\n className: iconClassMap['ordered-list'],\n title: 'Numbered List',\n default: true,\n },\n 'check-list': {\n name: 'check-list',\n action: toggleCheckList,\n className: iconClassMap['check-list'],\n title: 'Check List',\n default: true,\n },\n 'clean-block': {\n name: 'clean-block',\n action: cleanBlock,\n className: iconClassMap['clean-block'],\n title: 'Clean block',\n },\n 'separator-2': {\n name: 'separator-2',\n },\n 'link': {\n name: 'link',\n action: drawLink,\n className: iconClassMap['link'],\n title: 'Create Link',\n default: true,\n },\n 'image': {\n name: 'image',\n action: drawImage,\n className: iconClassMap['image'],\n title: 'Insert Image',\n default: true,\n },\n 'upload-image': {\n name: 'upload-image',\n action: drawUploadedImage,\n className: iconClassMap['upload-image'],\n title: 'Import an image',\n },\n 'table': {\n name: 'table',\n action: drawTable,\n className: iconClassMap['table'],\n title: 'Insert Table',\n },\n 'horizontal-rule': {\n name: 'horizontal-rule',\n action: drawHorizontalRule,\n className: iconClassMap['horizontal-rule'],\n title: 'Insert Horizontal Line',\n },\n 'separator-3': {\n name: 'separator-3',\n },\n 'preview': {\n name: 'preview',\n action: togglePreview,\n className: iconClassMap['preview'],\n noDisable: true,\n title: 'Toggle Preview',\n default: true,\n },\n 'side-by-side': {\n name: 'side-by-side',\n action: toggleSideBySide,\n className: iconClassMap['side-by-side'],\n noDisable: true,\n noMobile: true,\n title: 'Toggle Side by Side',\n default: true,\n },\n 'fullscreen': {\n name: 'fullscreen',\n action: toggleFullScreen,\n className: iconClassMap['fullscreen'],\n noDisable: true,\n noMobile: true,\n title: 'Toggle Fullscreen',\n default: true,\n },\n 'separator-4': {\n name: 'separator-4',\n },\n 'guide': {\n name: 'guide',\n action: 'https://www.markdownguide.org/basic-syntax/',\n className: iconClassMap['guide'],\n noDisable: true,\n title: 'Markdown Guide',\n default: true,\n },\n 'separator-5': {\n name: 'separator-5',\n },\n 'undo': {\n name: 'undo',\n action: undo,\n className: iconClassMap['undo'],\n noDisable: true,\n title: 'Undo',\n },\n 'redo': {\n name: 'redo',\n action: redo,\n className: iconClassMap['redo'],\n noDisable: true,\n title: 'Redo',\n },\n};\n\nvar insertTexts = {\n link: ['[', '](#url#)'],\n image: ['![', '](#url#)'],\n uploadedImage: ['![](#url#)', ''],\n // uploadedImage: ['![](#url#)\\n', ''], // TODO: New line insertion doesn't work here.\n table: ['', '\\n\\n| Column 1 | Column 2 | Column 3 |\\n| -------- | -------- | -------- |\\n| Text | Text | Text |\\n\\n'],\n horizontalRule: ['', '\\n\\n-----\\n\\n'],\n};\n\nvar promptTexts = {\n link: 'URL for the link:',\n image: 'URL of the image:',\n};\n\nvar timeFormat = {\n locale: 'en-US',\n format: {\n hour: '2-digit',\n minute: '2-digit',\n },\n};\n\nvar blockStyles = {\n 'bold': '**',\n 'code': '```',\n 'italic': '*',\n};\n\n/**\n * Texts displayed to the user (mainly on the status bar) for the import image\n * feature. Can be used for customization or internationalization.\n */\nvar imageTexts = {\n sbInit: 'Attach files by drag and dropping or pasting from clipboard.',\n sbOnDragEnter: 'Drop image to upload it.',\n sbOnDrop: 'Uploading image #images_names#...',\n sbProgress: 'Uploading #file_name#: #progress#%',\n sbOnUploaded: 'Uploaded #image_name#',\n sizeUnits: ' B, KB, MB',\n};\n\n/**\n * Errors displayed to the user, using the `errorCallback` option. Can be used for\n * customization or internationalization.\n */\nvar errorMessages = {\n noFileGiven: 'You must select a file.',\n typeNotAllowed: 'This image type is not allowed.',\n fileTooLarge: 'Image #image_name# is too big (#image_size#).\\n' +\n 'Maximum file size is #image_max_size#.',\n importError: 'Something went wrong when uploading the image #image_name#.',\n};\n\n/**\n * Interface of EasyMDE.\n */\nfunction EasyMDE(options) {\n // Handle options parameter\n options = options || {};\n\n // Used later to refer to it\"s parent\n options.parent = this;\n\n // Check if Font Awesome needs to be auto downloaded\n var autoDownloadFA = true;\n\n if (options.autoDownloadFontAwesome === false) {\n autoDownloadFA = false;\n }\n\n if (options.autoDownloadFontAwesome !== true) {\n var styleSheets = document.styleSheets;\n for (var i = 0; i < styleSheets.length; i++) {\n if (!styleSheets[i].href)\n continue;\n\n if (styleSheets[i].href.indexOf('//maxcdn.bootstrapcdn.com/font-awesome/') > -1) {\n autoDownloadFA = false;\n }\n }\n }\n\n if (autoDownloadFA) {\n var link = document.createElement('link');\n link.rel = 'stylesheet';\n link.href = 'https://maxcdn.bootstrapcdn.com/font-awesome/latest/css/font-awesome.min.css';\n document.getElementsByTagName('head')[0].appendChild(link);\n }\n\n\n // Find the textarea to use\n if (options.element) {\n this.element = options.element;\n } else if (options.element === null) {\n // This means that the element option was specified, but no element was found\n console.log('EasyMDE: Error. No element was found.');\n return;\n }\n\n\n // Handle toolbar\n if (options.toolbar === undefined) {\n // Initialize\n options.toolbar = [];\n\n\n // Loop over the built in buttons, to get the preferred order\n for (var key in toolbarBuiltInButtons) {\n if (Object.prototype.hasOwnProperty.call(toolbarBuiltInButtons, key)) {\n if (key.indexOf('separator-') != -1) {\n options.toolbar.push('|');\n }\n\n if (toolbarBuiltInButtons[key].default === true || (options.showIcons && options.showIcons.constructor === Array && options.showIcons.indexOf(key) != -1)) {\n options.toolbar.push(key);\n }\n }\n }\n }\n\n // Editor preview styling class.\n if (!Object.prototype.hasOwnProperty.call(options, 'previewClass')) {\n options.previewClass = 'editor-preview';\n }\n\n // Handle status bar\n if (!Object.prototype.hasOwnProperty.call(options, 'status')) {\n options.status = ['autosave', 'lines', 'words', 'cursor'];\n\n if (options.uploadImage) {\n options.status.unshift('upload-image');\n }\n }\n\n\n // Add default preview rendering function\n if (!options.previewRender) {\n options.previewRender = function (plainText) {\n // Note: \"this\" refers to the options object\n return this.parent.markdown(plainText);\n };\n }\n\n\n // Set default options for parsing config\n options.parsingConfig = extend({\n highlightFormatting: true, // needed for toggleCodeBlock to detect types of code\n }, options.parsingConfig || {});\n\n\n // Merging the insertTexts, with the given options\n options.insertTexts = extend({}, insertTexts, options.insertTexts || {});\n\n\n // Merging the promptTexts, with the given options\n options.promptTexts = extend({}, promptTexts, options.promptTexts || {});\n\n\n // Merging the blockStyles, with the given options\n options.blockStyles = extend({}, blockStyles, options.blockStyles || {});\n\n\n if (options.autosave != undefined) {\n // Merging the Autosave timeFormat, with the given options\n options.autosave.timeFormat = extend({}, timeFormat, options.autosave.timeFormat || {});\n }\n\n options.iconClassMap = extend({}, iconClassMap, options.iconClassMap || {});\n\n // Merging the shortcuts, with the given options\n options.shortcuts = extend({}, shortcuts, options.shortcuts || {});\n\n options.maxHeight = options.maxHeight || undefined;\n\n options.direction = options.direction || 'ltr';\n\n if (typeof options.maxHeight !== 'undefined') {\n // Min and max height are equal if maxHeight is set\n options.minHeight = options.maxHeight;\n } else {\n options.minHeight = options.minHeight || '300px';\n }\n\n options.errorCallback = options.errorCallback || function (errorMessage) {\n alert(errorMessage);\n };\n\n // Import-image default configuration\n options.uploadImage = options.uploadImage || false;\n options.imageMaxSize = options.imageMaxSize || 2097152; // 1024 * 1024 * 2\n options.imageAccept = options.imageAccept || 'image/png, image/jpeg, image/gif, image/avif';\n options.imageTexts = extend({}, imageTexts, options.imageTexts || {});\n options.errorMessages = extend({}, errorMessages, options.errorMessages || {});\n options.imagePathAbsolute = options.imagePathAbsolute || false;\n options.imageCSRFName = options.imageCSRFName || 'csrfmiddlewaretoken';\n options.imageCSRFHeader = options.imageCSRFHeader || false;\n options.imageInputName = options.imageInputName || 'image';\n\n\n // Change unique_id to uniqueId for backwards compatibility\n if (options.autosave != undefined && options.autosave.unique_id != undefined && options.autosave.unique_id != '')\n options.autosave.uniqueId = options.autosave.unique_id;\n\n // If overlay mode is specified and combine is not provided, default it to true\n if (options.overlayMode && options.overlayMode.combine === undefined) {\n options.overlayMode.combine = true;\n }\n\n // Update this options\n this.options = options;\n\n\n // Auto render\n this.render();\n\n\n // The codemirror component is only available after rendering\n // so, the setter for the initialValue can only run after\n // the element has been rendered\n if (options.initialValue && (!this.options.autosave || this.options.autosave.foundSavedValue !== true)) {\n this.value(options.initialValue);\n }\n\n if (options.uploadImage) {\n var self = this;\n\n this.codemirror.on('dragenter', function (cm, event) {\n self.updateStatusBar('upload-image', self.options.imageTexts.sbOnDragEnter);\n event.stopPropagation();\n event.preventDefault();\n });\n this.codemirror.on('dragend', function (cm, event) {\n self.updateStatusBar('upload-image', self.options.imageTexts.sbInit);\n event.stopPropagation();\n event.preventDefault();\n });\n this.codemirror.on('dragleave', function (cm, event) {\n self.updateStatusBar('upload-image', self.options.imageTexts.sbInit);\n event.stopPropagation();\n event.preventDefault();\n });\n\n this.codemirror.on('dragover', function (cm, event) {\n self.updateStatusBar('upload-image', self.options.imageTexts.sbOnDragEnter);\n event.stopPropagation();\n event.preventDefault();\n });\n\n this.codemirror.on('drop', function (cm, event) {\n event.stopPropagation();\n event.preventDefault();\n if (options.imageUploadFunction) {\n self.uploadImagesUsingCustomFunction(options.imageUploadFunction, event.dataTransfer.files);\n } else {\n self.uploadImages(event.dataTransfer.files);\n }\n });\n\n this.codemirror.on('paste', function (cm, event) {\n if (options.imageUploadFunction) {\n self.uploadImagesUsingCustomFunction(options.imageUploadFunction, event.clipboardData.files);\n } else {\n self.uploadImages(event.clipboardData.files);\n }\n });\n }\n}\n\n/**\n * Upload asynchronously a list of images to a server.\n *\n * Can be triggered by:\n * - drag&drop;\n * - copy-paste;\n * - the browse-file window (opened when the user clicks on the *upload-image* icon).\n * @param {FileList} files The files to upload the the server.\n * @param [onSuccess] {function} see EasyMDE.prototype.uploadImage\n * @param [onError] {function} see EasyMDE.prototype.uploadImage\n */\nEasyMDE.prototype.uploadImages = function (files, onSuccess, onError) {\n if (files.length === 0) {\n return;\n }\n var names = [];\n for (var i = 0; i < files.length; i++) {\n names.push(files[i].name);\n this.uploadImage(files[i], onSuccess, onError);\n }\n this.updateStatusBar('upload-image', this.options.imageTexts.sbOnDrop.replace('#images_names#', names.join(', ')));\n};\n\n/**\n * Upload asynchronously a list of images to a server.\n *\n * Can be triggered by:\n * - drag&drop;\n * - copy-paste;\n * - the browse-file window (opened when the user clicks on the *upload-image* icon).\n * @param imageUploadFunction {Function} The custom function to upload the image passed in options.\n * @param {FileList} files The files to upload the the server.\n */\nEasyMDE.prototype.uploadImagesUsingCustomFunction = function (imageUploadFunction, files) {\n if (files.length === 0) {\n return;\n }\n var names = [];\n for (var i = 0; i < files.length; i++) {\n names.push(files[i].name);\n this.uploadImageUsingCustomFunction(imageUploadFunction, files[i]);\n }\n this.updateStatusBar('upload-image', this.options.imageTexts.sbOnDrop.replace('#images_names#', names.join(', ')));\n};\n\n/**\n * Update an item in the status bar.\n * @param itemName {string} The name of the item to update (ie. 'upload-image', 'autosave', etc.).\n * @param content {string} the new content of the item to write in the status bar.\n */\nEasyMDE.prototype.updateStatusBar = function (itemName, content) {\n if (!this.gui.statusbar) {\n return;\n }\n\n var matchingClasses = this.gui.statusbar.getElementsByClassName(itemName);\n if (matchingClasses.length === 1) {\n this.gui.statusbar.getElementsByClassName(itemName)[0].textContent = content;\n } else if (matchingClasses.length === 0) {\n console.log('EasyMDE: status bar item ' + itemName + ' was not found.');\n } else {\n console.log('EasyMDE: Several status bar items named ' + itemName + ' was found.');\n }\n};\n\n/**\n * Default markdown render.\n */\nEasyMDE.prototype.markdown = function (text) {\n if (marked) {\n // Initialize\n var markedOptions;\n if (this.options && this.options.renderingConfig && this.options.renderingConfig.markedOptions) {\n markedOptions = this.options.renderingConfig.markedOptions;\n } else {\n markedOptions = {};\n }\n\n // Update options\n if (this.options && this.options.renderingConfig && this.options.renderingConfig.singleLineBreaks === false) {\n markedOptions.breaks = false;\n } else {\n markedOptions.breaks = true;\n }\n\n if (this.options && this.options.renderingConfig && this.options.renderingConfig.codeSyntaxHighlighting === true) {\n\n /* Get HLJS from config or window */\n var hljs = this.options.renderingConfig.hljs || window.hljs;\n\n /* Check if HLJS loaded */\n if (hljs) {\n markedOptions.highlight = function (code, language) {\n if (language && hljs.getLanguage(language)) {\n return hljs.highlight(language, code).value;\n } else {\n return hljs.highlightAuto(code).value;\n }\n };\n }\n }\n\n // Set options\n marked.use(markedOptions);\n\n // Convert the markdown to HTML\n var htmlText = marked.parse(text);\n\n // Sanitize HTML\n if (this.options.renderingConfig && typeof this.options.renderingConfig.sanitizerFunction === 'function') {\n htmlText = this.options.renderingConfig.sanitizerFunction.call(this, htmlText);\n }\n\n // Edit the HTML anchors to add 'target=\"_blank\"' by default.\n htmlText = addAnchorTargetBlank(htmlText);\n\n // Remove list-style when rendering checkboxes\n htmlText = removeListStyleWhenCheckbox(htmlText);\n\n return htmlText;\n }\n};\n\n/**\n * Render editor to the given element.\n */\nEasyMDE.prototype.render = function (el) {\n if (!el) {\n el = this.element || document.getElementsByTagName('textarea')[0];\n }\n\n if (this._rendered && this._rendered === el) {\n // Already rendered.\n return;\n }\n\n this.element = el;\n var options = this.options;\n\n var self = this;\n var keyMaps = {};\n\n for (var key in options.shortcuts) {\n // null stands for \"do not bind this command\"\n if (options.shortcuts[key] !== null && bindings[key] !== null) {\n (function (key) {\n keyMaps[fixShortcut(options.shortcuts[key])] = function () {\n var action = bindings[key];\n if (typeof action === 'function') {\n action(self);\n } else if (typeof action === 'string') {\n window.open(action, '_blank');\n }\n };\n })(key);\n }\n }\n\n keyMaps['Enter'] = 'newlineAndIndentContinueMarkdownList';\n keyMaps['Tab'] = 'tabAndIndentMarkdownList';\n keyMaps['Shift-Tab'] = 'shiftTabAndUnindentMarkdownList';\n keyMaps['Esc'] = function (cm) {\n if (cm.getOption('fullScreen')) toggleFullScreen(self);\n };\n\n this.documentOnKeyDown = function (e) {\n e = e || window.event;\n\n if (e.keyCode == 27) {\n if (self.codemirror.getOption('fullScreen')) toggleFullScreen(self);\n }\n };\n document.addEventListener('keydown', this.documentOnKeyDown, false);\n\n var mode, backdrop;\n\n // CodeMirror overlay mode\n if (options.overlayMode) {\n CodeMirror.defineMode('overlay-mode', function (config) {\n return CodeMirror.overlayMode(CodeMirror.getMode(config, options.spellChecker !== false ? 'spell-checker' : 'gfm'), options.overlayMode.mode, options.overlayMode.combine);\n });\n\n mode = 'overlay-mode';\n backdrop = options.parsingConfig;\n backdrop.gitHubSpice = false;\n } else {\n mode = options.parsingConfig;\n mode.name = 'gfm';\n mode.gitHubSpice = false;\n }\n if (options.spellChecker !== false) {\n mode = 'spell-checker';\n backdrop = options.parsingConfig;\n backdrop.name = 'gfm';\n backdrop.gitHubSpice = false;\n\n if (typeof options.spellChecker === 'function') {\n options.spellChecker({\n codeMirrorInstance: CodeMirror,\n });\n } else {\n CodeMirrorSpellChecker({\n codeMirrorInstance: CodeMirror,\n });\n }\n }\n\n // eslint-disable-next-line no-unused-vars\n function configureMouse(cm, repeat, event) {\n return {\n addNew: false,\n };\n }\n\n this.codemirror = CodeMirror.fromTextArea(el, {\n mode: mode,\n backdrop: backdrop,\n theme: (options.theme != undefined) ? options.theme : 'easymde',\n tabSize: (options.tabSize != undefined) ? options.tabSize : 2,\n indentUnit: (options.tabSize != undefined) ? options.tabSize : 2,\n indentWithTabs: (options.indentWithTabs === false) ? false : true,\n lineNumbers: (options.lineNumbers === true) ? true : false,\n autofocus: (options.autofocus === true) ? true : false,\n extraKeys: keyMaps,\n direction: options.direction,\n lineWrapping: (options.lineWrapping === false) ? false : true,\n allowDropFileTypes: ['text/plain'],\n placeholder: options.placeholder || el.getAttribute('placeholder') || '',\n styleSelectedText: (options.styleSelectedText != undefined) ? options.styleSelectedText : !isMobile(),\n scrollbarStyle: (options.scrollbarStyle != undefined) ? options.scrollbarStyle : 'native',\n configureMouse: configureMouse,\n inputStyle: (options.inputStyle != undefined) ? options.inputStyle : isMobile() ? 'contenteditable' : 'textarea',\n spellcheck: (options.nativeSpellcheck != undefined) ? options.nativeSpellcheck : true,\n autoRefresh: (options.autoRefresh != undefined) ? options.autoRefresh : false,\n });\n\n this.codemirror.getScrollerElement().style.minHeight = options.minHeight;\n\n if (typeof options.maxHeight !== 'undefined') {\n this.codemirror.getScrollerElement().style.height = options.maxHeight;\n }\n\n if (options.forceSync === true) {\n var cm = this.codemirror;\n cm.on('change', function () {\n cm.save();\n });\n }\n\n this.gui = {};\n\n // Wrap Codemirror with container before create toolbar, etc,\n // to use with sideBySideFullscreen option.\n var easyMDEContainer = document.createElement('div');\n easyMDEContainer.classList.add('EasyMDEContainer');\n easyMDEContainer.setAttribute('role', 'application');\n var cmWrapper = this.codemirror.getWrapperElement();\n cmWrapper.parentNode.insertBefore(easyMDEContainer, cmWrapper);\n easyMDEContainer.appendChild(cmWrapper);\n\n if (options.toolbar !== false) {\n this.gui.toolbar = this.createToolbar();\n }\n if (options.status !== false) {\n this.gui.statusbar = this.createStatusbar();\n }\n if (options.autosave != undefined && options.autosave.enabled === true) {\n this.autosave(); // use to load localstorage content\n this.codemirror.on('change', function () {\n clearTimeout(self._autosave_timeout);\n self._autosave_timeout = setTimeout(function () {\n self.autosave();\n }, self.options.autosave.submit_delay || self.options.autosave.delay || 1000);\n });\n }\n\n function calcHeight(naturalWidth, naturalHeight) {\n var height;\n var viewportWidth = window.getComputedStyle(document.querySelector('.CodeMirror-sizer')).width.replace('px', '');\n if (naturalWidth < viewportWidth) {\n height = naturalHeight + 'px';\n } else {\n height = (naturalHeight / naturalWidth * 100) + '%';\n }\n return height;\n }\n\n var _vm = this;\n\n\n function assignImageBlockAttributes(parentEl, img) {\n var url = (new URL(img.url, document.baseURI)).href;\n parentEl.setAttribute('data-img-src', url);\n parentEl.setAttribute('style', '--bg-image:url(' + url + ');--width:' + img.naturalWidth + 'px;--height:' + calcHeight(img.naturalWidth, img.naturalHeight));\n _vm.codemirror.setSize();\n }\n\n function handleImages() {\n if (!options.previewImagesInEditor) {\n return;\n }\n\n easyMDEContainer.querySelectorAll('.cm-image-marker').forEach(function (e) {\n var parentEl = e.parentElement;\n if (!parentEl.innerText.match(/^!\\[.*?\\]\\(.*\\)/g)) {\n // if img pasted on the same line with other text, don't preview, preview only images on separate line\n return;\n }\n if (!parentEl.hasAttribute('data-img-src')) {\n var srcAttr = parentEl.innerText.match(/!\\[.*?\\]\\((.*?)\\)/); // might require better parsing according to markdown spec\n if (!window.EMDEimagesCache) {\n window.EMDEimagesCache = {};\n }\n\n if (srcAttr && srcAttr.length >= 2) {\n var keySrc = srcAttr[1];\n\n if (options.imagesPreviewHandler) {\n var newSrc = options.imagesPreviewHandler(srcAttr[1]);\n // defensive check making sure the handler provided by the user returns a string\n if (typeof newSrc === 'string') {\n keySrc = newSrc;\n }\n }\n\n if (!window.EMDEimagesCache[keySrc]) {\n window.EMDEimagesCache[keySrc] = {};\n var img = document.createElement('img');\n img.onload = function () {\n window.EMDEimagesCache[keySrc] = {\n naturalWidth: img.naturalWidth,\n naturalHeight: img.naturalHeight,\n url: keySrc,\n };\n assignImageBlockAttributes(parentEl, window.EMDEimagesCache[keySrc]);\n };\n img.src = keySrc;\n } else {\n assignImageBlockAttributes(parentEl, window.EMDEimagesCache[keySrc]);\n }\n }\n }\n });\n }\n\n this.codemirror.on('update', function () {\n handleImages();\n });\n\n this.gui.sideBySide = this.createSideBySide();\n this._rendered = this.element;\n\n if (options.autofocus === true || el.autofocus) {\n this.codemirror.focus();\n }\n\n // Fixes CodeMirror bug (#344)\n var temp_cm = this.codemirror;\n setTimeout(function () {\n temp_cm.refresh();\n }.bind(temp_cm), 0);\n};\n\nEasyMDE.prototype.cleanup = function () {\n document.removeEventListener('keydown', this.documentOnKeyDown);\n};\n\n// Safari, in Private Browsing Mode, looks like it supports localStorage but all calls to setItem throw QuotaExceededError. We're going to detect this and set a variable accordingly.\nfunction isLocalStorageAvailable() {\n if (typeof localStorage === 'object') {\n try {\n localStorage.setItem('smde_localStorage', 1);\n localStorage.removeItem('smde_localStorage');\n } catch (e) {\n return false;\n }\n } else {\n return false;\n }\n\n return true;\n}\n\nEasyMDE.prototype.autosave = function () {\n if (isLocalStorageAvailable()) {\n var easyMDE = this;\n\n if (this.options.autosave.uniqueId == undefined || this.options.autosave.uniqueId == '') {\n console.log('EasyMDE: You must set a uniqueId to use the autosave feature');\n return;\n }\n\n if (this.options.autosave.binded !== true) {\n if (easyMDE.element.form != null && easyMDE.element.form != undefined) {\n easyMDE.element.form.addEventListener('submit', function () {\n clearTimeout(easyMDE.autosaveTimeoutId);\n easyMDE.autosaveTimeoutId = undefined;\n\n localStorage.removeItem('smde_' + easyMDE.options.autosave.uniqueId);\n });\n }\n\n this.options.autosave.binded = true;\n }\n\n if (this.options.autosave.loaded !== true) {\n if (typeof localStorage.getItem('smde_' + this.options.autosave.uniqueId) == 'string' && localStorage.getItem('smde_' + this.options.autosave.uniqueId) != '') {\n this.codemirror.setValue(localStorage.getItem('smde_' + this.options.autosave.uniqueId));\n this.options.autosave.foundSavedValue = true;\n }\n\n this.options.autosave.loaded = true;\n }\n\n var value = easyMDE.value();\n if (value !== '') {\n localStorage.setItem('smde_' + this.options.autosave.uniqueId, value);\n } else {\n localStorage.removeItem('smde_' + this.options.autosave.uniqueId);\n }\n\n var el = document.getElementById('autosaved');\n if (el != null && el != undefined && el != '') {\n var d = new Date();\n var dd = new Intl.DateTimeFormat([this.options.autosave.timeFormat.locale, 'en-US'], this.options.autosave.timeFormat.format).format(d);\n var save = this.options.autosave.text == undefined ? 'Autosaved: ' : this.options.autosave.text;\n\n el.innerHTML = save + dd;\n }\n } else {\n console.log('EasyMDE: localStorage not available, cannot autosave');\n }\n};\n\nEasyMDE.prototype.clearAutosavedValue = function () {\n if (isLocalStorageAvailable()) {\n if (this.options.autosave == undefined || this.options.autosave.uniqueId == undefined || this.options.autosave.uniqueId == '') {\n console.log('EasyMDE: You must set a uniqueId to clear the autosave value');\n return;\n }\n\n localStorage.removeItem('smde_' + this.options.autosave.uniqueId);\n } else {\n console.log('EasyMDE: localStorage not available, cannot autosave');\n }\n};\n\n/**\n * Open the browse-file window to upload an image to a server.\n * @param [onSuccess] {function} see EasyMDE.prototype.uploadImage\n * @param [onError] {function} see EasyMDE.prototype.uploadImage\n */\nEasyMDE.prototype.openBrowseFileWindow = function (onSuccess, onError) {\n var self = this;\n var imageInput = this.gui.toolbar.getElementsByClassName('imageInput')[0];\n imageInput.click(); //dispatchEvent(new MouseEvent('click')); // replaced with click() for IE11 compatibility.\n function onChange(event) {\n if (self.options.imageUploadFunction) {\n self.uploadImagesUsingCustomFunction(self.options.imageUploadFunction, event.target.files);\n } else {\n self.uploadImages(event.target.files, onSuccess, onError);\n }\n imageInput.removeEventListener('change', onChange);\n }\n\n imageInput.addEventListener('change', onChange);\n};\n\n/**\n * Upload an image to the server.\n *\n * @param file {File} The image to upload, as a HTML5 File object (https://developer.mozilla.org/en-US/docs/Web/API/File)\n * @param [onSuccess] {function} A callback function to execute after the image has been successfully uploaded, with one parameter:\n * - url (string): The URL of the uploaded image.\n * @param [onError] {function} A callback function to execute when the image upload fails, with one parameter:\n * - error (string): the detailed error to display to the user (based on messages from options.errorMessages).\n */\nEasyMDE.prototype.uploadImage = function (file, onSuccess, onError) {\n var self = this;\n onSuccess = onSuccess || function onSuccess(imageUrl) {\n afterImageUploaded(self, imageUrl);\n };\n\n function onErrorSup(errorMessage) {\n // show error on status bar and reset after 10000ms\n self.updateStatusBar('upload-image', errorMessage);\n\n setTimeout(function () {\n self.updateStatusBar('upload-image', self.options.imageTexts.sbInit);\n }, 10000);\n\n // run custom error handler\n if (onError && typeof onError === 'function') {\n onError(errorMessage);\n }\n // run error handler from options, this alerts the message.\n self.options.errorCallback(errorMessage);\n }\n\n function fillErrorMessage(errorMessage) {\n var units = self.options.imageTexts.sizeUnits.split(',');\n return errorMessage\n .replace('#image_name#', file.name)\n .replace('#image_size#', humanFileSize(file.size, units))\n .replace('#image_max_size#', humanFileSize(self.options.imageMaxSize, units));\n }\n\n if (file.size > this.options.imageMaxSize) {\n onErrorSup(fillErrorMessage(this.options.errorMessages.fileTooLarge));\n return;\n }\n\n var formData = new FormData();\n formData.append('image', file);\n\n // insert CSRF body token if provided in config.\n if (self.options.imageCSRFToken && !self.options.imageCSRFHeader) {\n formData.append(self.options.imageCSRFName, self.options.imageCSRFToken);\n }\n\n var request = new XMLHttpRequest();\n request.upload.onprogress = function (event) {\n if (event.lengthComputable) {\n var progress = '' + Math.round((event.loaded * 100) / event.total);\n self.updateStatusBar('upload-image', self.options.imageTexts.sbProgress.replace('#file_name#', file.name).replace('#progress#', progress));\n }\n };\n request.open('POST', this.options.imageUploadEndpoint);\n\n // insert CSRF header token if provided in config.\n if (self.options.imageCSRFToken && self.options.imageCSRFHeader) {\n request.setRequestHeader(self.options.imageCSRFName, self.options.imageCSRFToken);\n }\n\n request.onload = function () {\n try {\n var response = JSON.parse(this.responseText);\n } catch (error) {\n console.error('EasyMDE: The server did not return a valid json.');\n onErrorSup(fillErrorMessage(self.options.errorMessages.importError));\n return;\n }\n if (this.status === 200 && response && !response.error && response.data && response.data.filePath) {\n onSuccess((self.options.imagePathAbsolute ? '' : (window.location.origin + '/')) + response.data.filePath);\n } else {\n if (response.error && response.error in self.options.errorMessages) { // preformatted error message\n onErrorSup(fillErrorMessage(self.options.errorMessages[response.error]));\n } else if (response.error) { // server side generated error message\n onErrorSup(fillErrorMessage(response.error));\n } else { //unknown error\n console.error('EasyMDE: Received an unexpected response after uploading the image.'\n + this.status + ' (' + this.statusText + ')');\n onErrorSup(fillErrorMessage(self.options.errorMessages.importError));\n }\n }\n };\n\n request.onerror = function (event) {\n console.error('EasyMDE: An unexpected error occurred when trying to upload the image.'\n + event.target.status + ' (' + event.target.statusText + ')');\n onErrorSup(self.options.errorMessages.importError);\n };\n\n request.send(formData);\n\n};\n\n/**\n * Upload an image to the server using a custom upload function.\n *\n * @param imageUploadFunction {Function} The custom function to upload the image passed in options\n * @param file {File} The image to upload, as a HTML5 File object (https://developer.mozilla.org/en-US/docs/Web/API/File).\n */\nEasyMDE.prototype.uploadImageUsingCustomFunction = function (imageUploadFunction, file) {\n var self = this;\n\n function onSuccess(imageUrl) {\n afterImageUploaded(self, imageUrl);\n }\n\n function onError(errorMessage) {\n var filledErrorMessage = fillErrorMessage(errorMessage);\n // show error on status bar and reset after 10000ms\n self.updateStatusBar('upload-image', filledErrorMessage);\n\n setTimeout(function () {\n self.updateStatusBar('upload-image', self.options.imageTexts.sbInit);\n }, 10000);\n\n // run error handler from options, this alerts the message.\n self.options.errorCallback(filledErrorMessage);\n }\n\n function fillErrorMessage(errorMessage) {\n var units = self.options.imageTexts.sizeUnits.split(',');\n return errorMessage\n .replace('#image_name#', file.name)\n .replace('#image_size#', humanFileSize(file.size, units))\n .replace('#image_max_size#', humanFileSize(self.options.imageMaxSize, units));\n }\n\n imageUploadFunction.apply(this, [file, onSuccess, onError]);\n};\n\nEasyMDE.prototype.setPreviewMaxHeight = function () {\n var cm = this.codemirror;\n var wrapper = cm.getWrapperElement();\n var preview = wrapper.nextSibling;\n\n // Calc preview max height\n var paddingTop = parseInt(window.getComputedStyle(wrapper).paddingTop);\n var borderTopWidth = parseInt(window.getComputedStyle(wrapper).borderTopWidth);\n var optionsMaxHeight = parseInt(this.options.maxHeight);\n var wrapperMaxHeight = optionsMaxHeight + paddingTop * 2 + borderTopWidth * 2;\n var previewMaxHeight = wrapperMaxHeight.toString() + 'px';\n\n preview.style.height = previewMaxHeight;\n};\n\nEasyMDE.prototype.createSideBySide = function () {\n var cm = this.codemirror;\n var wrapper = cm.getWrapperElement();\n var preview = wrapper.nextSibling;\n\n if (!preview || !preview.classList.contains('editor-preview-side')) {\n preview = document.createElement('div');\n preview.className = 'editor-preview-side';\n\n if (this.options.previewClass) {\n\n if (Array.isArray(this.options.previewClass)) {\n for (var i = 0; i < this.options.previewClass.length; i++) {\n preview.classList.add(this.options.previewClass[i]);\n }\n\n } else if (typeof this.options.previewClass === 'string') {\n preview.classList.add(this.options.previewClass);\n }\n }\n\n wrapper.parentNode.insertBefore(preview, wrapper.nextSibling);\n }\n\n if (typeof this.options.maxHeight !== 'undefined') {\n this.setPreviewMaxHeight();\n }\n\n if (this.options.syncSideBySidePreviewScroll === false) return preview;\n // Syncs scroll editor -> preview\n var cScroll = false;\n var pScroll = false;\n cm.on('scroll', function (v) {\n if (cScroll) {\n cScroll = false;\n return;\n }\n pScroll = true;\n var height = v.getScrollInfo().height - v.getScrollInfo().clientHeight;\n var ratio = parseFloat(v.getScrollInfo().top) / height;\n var move = (preview.scrollHeight - preview.clientHeight) * ratio;\n preview.scrollTop = move;\n });\n\n // Syncs scroll preview -> editor\n preview.onscroll = function () {\n if (pScroll) {\n pScroll = false;\n return;\n }\n cScroll = true;\n var height = preview.scrollHeight - preview.clientHeight;\n var ratio = parseFloat(preview.scrollTop) / height;\n var move = (cm.getScrollInfo().height - cm.getScrollInfo().clientHeight) * ratio;\n cm.scrollTo(0, move);\n };\n return preview;\n};\n\nEasyMDE.prototype.createToolbar = function (items) {\n items = items || this.options.toolbar;\n\n if (!items || items.length === 0) {\n return;\n }\n var i;\n for (i = 0; i < items.length; i++) {\n if (toolbarBuiltInButtons[items[i]] != undefined) {\n items[i] = toolbarBuiltInButtons[items[i]];\n }\n }\n\n var bar = document.createElement('div');\n bar.className = 'editor-toolbar';\n bar.setAttribute('role', 'toolbar');\n\n var self = this;\n\n var toolbarData = {};\n self.toolbar = items;\n\n for (i = 0; i < items.length; i++) {\n if (items[i].name == 'guide' && self.options.toolbarGuideIcon === false)\n continue;\n\n if (self.options.hideIcons && self.options.hideIcons.indexOf(items[i].name) != -1)\n continue;\n\n // Fullscreen does not work well on mobile devices (even tablets)\n // In the future, hopefully this can be resolved\n if ((items[i].name == 'fullscreen' || items[i].name == 'side-by-side') && isMobile())\n continue;\n\n\n // Don't include trailing separators\n if (items[i] === '|') {\n var nonSeparatorIconsFollow = false;\n\n for (var x = (i + 1); x < items.length; x++) {\n if (items[x] !== '|' && (!self.options.hideIcons || self.options.hideIcons.indexOf(items[x].name) == -1)) {\n nonSeparatorIconsFollow = true;\n }\n }\n\n if (!nonSeparatorIconsFollow)\n continue;\n }\n\n\n // Create the icon and append to the toolbar\n (function (item) {\n var el;\n if (item === '|') {\n el = createSep();\n } else if (item.children) {\n el = createToolbarDropdown(item, self.options.toolbarTips, self.options.shortcuts, self);\n } else {\n el = createToolbarButton(item, true, self.options.toolbarTips, self.options.shortcuts, 'button', self);\n }\n\n\n toolbarData[item.name || item] = el;\n bar.appendChild(el);\n\n // Create the input element (ie. ), used among\n // with the 'import-image' icon to open the browse-file window.\n if (item.name === 'upload-image') {\n var imageInput = document.createElement('input');\n imageInput.className = 'imageInput';\n imageInput.type = 'file';\n imageInput.multiple = true;\n imageInput.name = self.options.imageInputName;\n imageInput.accept = self.options.imageAccept;\n imageInput.style.display = 'none';\n imageInput.style.opacity = 0;\n bar.appendChild(imageInput);\n }\n })(items[i]);\n }\n\n self.toolbar_div = bar;\n self.toolbarElements = toolbarData;\n\n var cm = this.codemirror;\n cm.on('cursorActivity', function () {\n var stat = getState(cm);\n\n for (var key in toolbarData) {\n (function (key) {\n var el = toolbarData[key];\n if (stat[key]) {\n el.classList.add('active');\n } else if (key != 'fullscreen' && key != 'side-by-side') {\n el.classList.remove('active');\n }\n })(key);\n }\n });\n\n var cmWrapper = cm.getWrapperElement();\n cmWrapper.parentNode.insertBefore(bar, cmWrapper);\n return bar;\n};\n\nEasyMDE.prototype.createStatusbar = function (status) {\n // Initialize\n status = status || this.options.status;\n var options = this.options;\n var cm = this.codemirror;\n\n // Make sure the status variable is valid\n if (!status || status.length === 0) {\n return;\n }\n\n // Set up the built-in items\n var items = [];\n var i, onUpdate, onActivity, defaultValue;\n\n for (i = 0; i < status.length; i++) {\n // Reset some values\n onUpdate = undefined;\n onActivity = undefined;\n defaultValue = undefined;\n\n\n // Handle if custom or not\n if (typeof status[i] === 'object') {\n items.push({\n className: status[i].className,\n defaultValue: status[i].defaultValue,\n onUpdate: status[i].onUpdate,\n onActivity: status[i].onActivity,\n });\n } else {\n var name = status[i];\n\n if (name === 'words') {\n defaultValue = function (el) {\n el.innerHTML = wordCount(cm.getValue());\n };\n onUpdate = function (el) {\n el.innerHTML = wordCount(cm.getValue());\n };\n } else if (name === 'lines') {\n defaultValue = function (el) {\n el.innerHTML = cm.lineCount();\n };\n onUpdate = function (el) {\n el.innerHTML = cm.lineCount();\n };\n } else if (name === 'cursor') {\n defaultValue = function (el) {\n el.innerHTML = '1:1';\n };\n onActivity = function (el) {\n var pos = cm.getCursor();\n var posLine = pos.line + 1;\n var posColumn = pos.ch + 1;\n el.innerHTML = posLine + ':' + posColumn;\n };\n } else if (name === 'autosave') {\n defaultValue = function (el) {\n if (options.autosave != undefined && options.autosave.enabled === true) {\n el.setAttribute('id', 'autosaved');\n }\n };\n } else if (name === 'upload-image') {\n defaultValue = function (el) {\n el.innerHTML = options.imageTexts.sbInit;\n };\n }\n\n items.push({\n className: name,\n defaultValue: defaultValue,\n onUpdate: onUpdate,\n onActivity: onActivity,\n });\n }\n }\n\n\n // Create element for the status bar\n var bar = document.createElement('div');\n bar.className = 'editor-statusbar';\n\n\n // Create a new span for each item\n for (i = 0; i < items.length; i++) {\n // Store in temporary variable\n var item = items[i];\n\n\n // Create span element\n var el = document.createElement('span');\n el.className = item.className;\n\n\n // Ensure the defaultValue is a function\n if (typeof item.defaultValue === 'function') {\n item.defaultValue(el);\n }\n\n\n // Ensure the onUpdate is a function\n if (typeof item.onUpdate === 'function') {\n // Create a closure around the span of the current action, then execute the onUpdate handler\n this.codemirror.on('update', (function (el, item) {\n return function () {\n item.onUpdate(el);\n };\n }(el, item)));\n }\n if (typeof item.onActivity === 'function') {\n // Create a closure around the span of the current action, then execute the onActivity handler\n this.codemirror.on('cursorActivity', (function (el, item) {\n return function () {\n item.onActivity(el);\n };\n }(el, item)));\n }\n\n\n // Append the item to the status bar\n bar.appendChild(el);\n }\n\n\n // Insert the status bar into the DOM\n var cmWrapper = this.codemirror.getWrapperElement();\n cmWrapper.parentNode.insertBefore(bar, cmWrapper.nextSibling);\n return bar;\n};\n\n/**\n * Get or set the text content.\n */\nEasyMDE.prototype.value = function (val) {\n var cm = this.codemirror;\n if (val === undefined) {\n return cm.getValue();\n } else {\n cm.getDoc().setValue(val);\n if (this.isPreviewActive()) {\n var wrapper = cm.getWrapperElement();\n var preview = wrapper.lastChild;\n var preview_result = this.options.previewRender(val, preview);\n if (preview_result !== null) {\n preview.innerHTML = preview_result;\n }\n\n }\n return this;\n }\n};\n\n\n/**\n * Bind static methods for exports.\n */\nEasyMDE.toggleBold = toggleBold;\nEasyMDE.toggleItalic = toggleItalic;\nEasyMDE.toggleStrikethrough = toggleStrikethrough;\nEasyMDE.toggleBlockquote = toggleBlockquote;\nEasyMDE.toggleHeadingSmaller = toggleHeadingSmaller;\nEasyMDE.toggleHeadingBigger = toggleHeadingBigger;\nEasyMDE.toggleHeading1 = toggleHeading1;\nEasyMDE.toggleHeading2 = toggleHeading2;\nEasyMDE.toggleHeading3 = toggleHeading3;\nEasyMDE.toggleHeading4 = toggleHeading4;\nEasyMDE.toggleHeading5 = toggleHeading5;\nEasyMDE.toggleHeading6 = toggleHeading6;\nEasyMDE.toggleCodeBlock = toggleCodeBlock;\nEasyMDE.toggleUnorderedList = toggleUnorderedList;\nEasyMDE.toggleOrderedList = toggleOrderedList;\nEasyMDE.toggleCheckList = toggleCheckList;\nEasyMDE.cleanBlock = cleanBlock;\nEasyMDE.drawLink = drawLink;\nEasyMDE.drawImage = drawImage;\nEasyMDE.drawUploadedImage = drawUploadedImage;\nEasyMDE.drawTable = drawTable;\nEasyMDE.drawHorizontalRule = drawHorizontalRule;\nEasyMDE.undo = undo;\nEasyMDE.redo = redo;\nEasyMDE.togglePreview = togglePreview;\nEasyMDE.toggleSideBySide = toggleSideBySide;\nEasyMDE.toggleFullScreen = toggleFullScreen;\n\n/**\n * Bind instance methods for exports.\n */\nEasyMDE.prototype.toggleBold = function () {\n toggleBold(this);\n};\nEasyMDE.prototype.toggleItalic = function () {\n toggleItalic(this);\n};\nEasyMDE.prototype.toggleStrikethrough = function () {\n toggleStrikethrough(this);\n};\nEasyMDE.prototype.toggleBlockquote = function () {\n toggleBlockquote(this);\n};\nEasyMDE.prototype.toggleHeadingSmaller = function () {\n toggleHeadingSmaller(this);\n};\nEasyMDE.prototype.toggleHeadingBigger = function () {\n toggleHeadingBigger(this);\n};\nEasyMDE.prototype.toggleHeading1 = function () {\n toggleHeading1(this);\n};\nEasyMDE.prototype.toggleHeading2 = function () {\n toggleHeading2(this);\n};\nEasyMDE.prototype.toggleHeading3 = function () {\n toggleHeading3(this);\n};\nEasyMDE.prototype.toggleHeading4 = function () {\n toggleHeading4(this);\n};\nEasyMDE.prototype.toggleHeading5 = function () {\n toggleHeading5(this);\n};\nEasyMDE.prototype.toggleHeading6 = function () {\n toggleHeading6(this);\n};\nEasyMDE.prototype.toggleCodeBlock = function () {\n toggleCodeBlock(this);\n};\nEasyMDE.prototype.toggleUnorderedList = function () {\n toggleUnorderedList(this);\n};\nEasyMDE.prototype.toggleOrderedList = function () {\n toggleOrderedList(this);\n};\nEasyMDE.prototype.toggleCheckList = function () {\n toggleCheckList(this);\n};\nEasyMDE.prototype.cleanBlock = function () {\n cleanBlock(this);\n};\nEasyMDE.prototype.drawLink = function () {\n drawLink(this);\n};\nEasyMDE.prototype.drawImage = function () {\n drawImage(this);\n};\nEasyMDE.prototype.drawUploadedImage = function () {\n drawUploadedImage(this);\n};\nEasyMDE.prototype.drawTable = function () {\n drawTable(this);\n};\nEasyMDE.prototype.drawHorizontalRule = function () {\n drawHorizontalRule(this);\n};\nEasyMDE.prototype.undo = function () {\n undo(this);\n};\nEasyMDE.prototype.redo = function () {\n redo(this);\n};\nEasyMDE.prototype.togglePreview = function () {\n togglePreview(this);\n};\nEasyMDE.prototype.toggleSideBySide = function () {\n toggleSideBySide(this);\n};\nEasyMDE.prototype.toggleFullScreen = function () {\n toggleFullScreen(this);\n};\n\nEasyMDE.prototype.isPreviewActive = function () {\n var cm = this.codemirror;\n var wrapper = cm.getWrapperElement();\n var preview = wrapper.lastChild;\n\n return preview.classList.contains('editor-preview-active');\n};\n\nEasyMDE.prototype.isSideBySideActive = function () {\n var cm = this.codemirror;\n var wrapper = cm.getWrapperElement();\n var preview = wrapper.nextSibling;\n\n return preview.classList.contains('editor-preview-active-side');\n};\n\nEasyMDE.prototype.isFullscreenActive = function () {\n var cm = this.codemirror;\n\n return cm.getOption('fullScreen');\n};\n\nEasyMDE.prototype.getState = function () {\n var cm = this.codemirror;\n\n return getState(cm);\n};\n\nEasyMDE.prototype.toTextArea = function () {\n var cm = this.codemirror;\n var wrapper = cm.getWrapperElement();\n var easyMDEContainer = wrapper.parentNode;\n\n if (easyMDEContainer) {\n if (this.gui.toolbar) {\n easyMDEContainer.removeChild(this.gui.toolbar);\n }\n if (this.gui.statusbar) {\n easyMDEContainer.removeChild(this.gui.statusbar);\n }\n if (this.gui.sideBySide) {\n easyMDEContainer.removeChild(this.gui.sideBySide);\n }\n }\n\n // Unwrap easyMDEcontainer before codemirror toTextArea() call\n easyMDEContainer.parentNode.insertBefore(wrapper, easyMDEContainer);\n easyMDEContainer.remove();\n\n cm.toTextArea();\n\n if (this.autosaveTimeoutId) {\n clearTimeout(this.autosaveTimeoutId);\n this.autosaveTimeoutId = undefined;\n this.clearAutosavedValue();\n }\n};\n\nmodule.exports = EasyMDE;\n", "/**\n * @license\n * Lodash \n * Copyright OpenJS Foundation and other contributors \n * Released under MIT license \n * Based on Underscore.js 1.8.3 \n * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors\n */\n;(function() {\n\n /** Used as a safe reference for `undefined` in pre-ES5 environments. */\n var undefined;\n\n /** Used as the semantic version number. */\n var VERSION = '4.18.1';\n\n /** Used as the size to enable large array optimizations. */\n var LARGE_ARRAY_SIZE = 200;\n\n /** Error message constants. */\n var CORE_ERROR_TEXT = 'Unsupported core-js use. Try https://npms.io/search?q=ponyfill.',\n FUNC_ERROR_TEXT = 'Expected a function',\n INVALID_TEMPL_VAR_ERROR_TEXT = 'Invalid `variable` option passed into `_.template`',\n INVALID_TEMPL_IMPORTS_ERROR_TEXT = 'Invalid `imports` option passed into `_.template`';\n\n /** Used to stand-in for `undefined` hash values. */\n var HASH_UNDEFINED = '__lodash_hash_undefined__';\n\n /** Used as the maximum memoize cache size. */\n var MAX_MEMOIZE_SIZE = 500;\n\n /** Used as the internal argument placeholder. */\n var PLACEHOLDER = '__lodash_placeholder__';\n\n /** Used to compose bitmasks for cloning. */\n var CLONE_DEEP_FLAG = 1,\n CLONE_FLAT_FLAG = 2,\n CLONE_SYMBOLS_FLAG = 4;\n\n /** Used to compose bitmasks for value comparisons. */\n var COMPARE_PARTIAL_FLAG = 1,\n COMPARE_UNORDERED_FLAG = 2;\n\n /** Used to compose bitmasks for function metadata. */\n var WRAP_BIND_FLAG = 1,\n WRAP_BIND_KEY_FLAG = 2,\n WRAP_CURRY_BOUND_FLAG = 4,\n WRAP_CURRY_FLAG = 8,\n WRAP_CURRY_RIGHT_FLAG = 16,\n WRAP_PARTIAL_FLAG = 32,\n WRAP_PARTIAL_RIGHT_FLAG = 64,\n WRAP_ARY_FLAG = 128,\n WRAP_REARG_FLAG = 256,\n WRAP_FLIP_FLAG = 512;\n\n /** Used as default options for `_.truncate`. */\n var DEFAULT_TRUNC_LENGTH = 30,\n DEFAULT_TRUNC_OMISSION = '...';\n\n /** Used to detect hot functions by number of calls within a span of milliseconds. */\n var HOT_COUNT = 800,\n HOT_SPAN = 16;\n\n /** Used to indicate the type of lazy iteratees. */\n var LAZY_FILTER_FLAG = 1,\n LAZY_MAP_FLAG = 2,\n LAZY_WHILE_FLAG = 3;\n\n /** Used as references for various `Number` constants. */\n var INFINITY = 1 / 0,\n MAX_SAFE_INTEGER = 9007199254740991,\n MAX_INTEGER = 1.7976931348623157e+308,\n NAN = 0 / 0;\n\n /** Used as references for the maximum length and index of an array. */\n var MAX_ARRAY_LENGTH = 4294967295,\n MAX_ARRAY_INDEX = MAX_ARRAY_LENGTH - 1,\n HALF_MAX_ARRAY_LENGTH = MAX_ARRAY_LENGTH >>> 1;\n\n /** Used to associate wrap methods with their bit flags. */\n var wrapFlags = [\n ['ary', WRAP_ARY_FLAG],\n ['bind', WRAP_BIND_FLAG],\n ['bindKey', WRAP_BIND_KEY_FLAG],\n ['curry', WRAP_CURRY_FLAG],\n ['curryRight', WRAP_CURRY_RIGHT_FLAG],\n ['flip', WRAP_FLIP_FLAG],\n ['partial', WRAP_PARTIAL_FLAG],\n ['partialRight', WRAP_PARTIAL_RIGHT_FLAG],\n ['rearg', WRAP_REARG_FLAG]\n ];\n\n /** `Object#toString` result references. */\n var argsTag = '[object Arguments]',\n arrayTag = '[object Array]',\n asyncTag = '[object AsyncFunction]',\n boolTag = '[object Boolean]',\n dateTag = '[object Date]',\n domExcTag = '[object DOMException]',\n errorTag = '[object Error]',\n funcTag = '[object Function]',\n genTag = '[object GeneratorFunction]',\n mapTag = '[object Map]',\n numberTag = '[object Number]',\n nullTag = '[object Null]',\n objectTag = '[object Object]',\n promiseTag = '[object Promise]',\n proxyTag = '[object Proxy]',\n regexpTag = '[object RegExp]',\n setTag = '[object Set]',\n stringTag = '[object String]',\n symbolTag = '[object Symbol]',\n undefinedTag = '[object Undefined]',\n weakMapTag = '[object WeakMap]',\n weakSetTag = '[object WeakSet]';\n\n var arrayBufferTag = '[object ArrayBuffer]',\n dataViewTag = '[object DataView]',\n float32Tag = '[object Float32Array]',\n float64Tag = '[object Float64Array]',\n int8Tag = '[object Int8Array]',\n int16Tag = '[object Int16Array]',\n int32Tag = '[object Int32Array]',\n uint8Tag = '[object Uint8Array]',\n uint8ClampedTag = '[object Uint8ClampedArray]',\n uint16Tag = '[object Uint16Array]',\n uint32Tag = '[object Uint32Array]';\n\n /** Used to match empty string literals in compiled template source. */\n var reEmptyStringLeading = /\\b__p \\+= '';/g,\n reEmptyStringMiddle = /\\b(__p \\+=) '' \\+/g,\n reEmptyStringTrailing = /(__e\\(.*?\\)|\\b__t\\)) \\+\\n'';/g;\n\n /** Used to match HTML entities and HTML characters. */\n var reEscapedHtml = /&(?:amp|lt|gt|quot|#39);/g,\n reUnescapedHtml = /[&<>\"']/g,\n reHasEscapedHtml = RegExp(reEscapedHtml.source),\n reHasUnescapedHtml = RegExp(reUnescapedHtml.source);\n\n /** Used to match template delimiters. */\n var reEscape = /<%-([\\s\\S]+?)%>/g,\n reEvaluate = /<%([\\s\\S]+?)%>/g,\n reInterpolate = /<%=([\\s\\S]+?)%>/g;\n\n /** Used to match property names within property paths. */\n var reIsDeepProp = /\\.|\\[(?:[^[\\]]*|([\"'])(?:(?!\\1)[^\\\\]|\\\\.)*?\\1)\\]/,\n reIsPlainProp = /^\\w*$/,\n rePropName = /[^.[\\]]+|\\[(?:(-?\\d+(?:\\.\\d+)?)|([\"'])((?:(?!\\2)[^\\\\]|\\\\.)*?)\\2)\\]|(?=(?:\\.|\\[\\])(?:\\.|\\[\\]|$))/g;\n\n /**\n * Used to match `RegExp`\n * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).\n */\n var reRegExpChar = /[\\\\^$.*+?()[\\]{}|]/g,\n reHasRegExpChar = RegExp(reRegExpChar.source);\n\n /** Used to match leading whitespace. */\n var reTrimStart = /^\\s+/;\n\n /** Used to match a single whitespace character. */\n var reWhitespace = /\\s/;\n\n /** Used to match wrap detail comments. */\n var reWrapComment = /\\{(?:\\n\\/\\* \\[wrapped with .+\\] \\*\\/)?\\n?/,\n reWrapDetails = /\\{\\n\\/\\* \\[wrapped with (.+)\\] \\*/,\n reSplitDetails = /,? & /;\n\n /** Used to match words composed of alphanumeric characters. */\n var reAsciiWord = /[^\\x00-\\x2f\\x3a-\\x40\\x5b-\\x60\\x7b-\\x7f]+/g;\n\n /**\n * Used to validate the `validate` option in `_.template` variable.\n *\n * Forbids characters which could potentially change the meaning of the function argument definition:\n * - \"(),\" (modification of function parameters)\n * - \"=\" (default value)\n * - \"[]{}\" (destructuring of function parameters)\n * - \"/\" (beginning of a comment)\n * - whitespace\n */\n var reForbiddenIdentifierChars = /[()=,{}\\[\\]\\/\\s]/;\n\n /** Used to match backslashes in property paths. */\n var reEscapeChar = /\\\\(\\\\)?/g;\n\n /**\n * Used to match\n * [ES template delimiters](http://ecma-international.org/ecma-262/7.0/#sec-template-literal-lexical-components).\n */\n var reEsTemplate = /\\$\\{([^\\\\}]*(?:\\\\.[^\\\\}]*)*)\\}/g;\n\n /** Used to match `RegExp` flags from their coerced string values. */\n var reFlags = /\\w*$/;\n\n /** Used to detect bad signed hexadecimal string values. */\n var reIsBadHex = /^[-+]0x[0-9a-f]+$/i;\n\n /** Used to detect binary string values. */\n var reIsBinary = /^0b[01]+$/i;\n\n /** Used to detect host constructors (Safari). */\n var reIsHostCtor = /^\\[object .+?Constructor\\]$/;\n\n /** Used to detect octal string values. */\n var reIsOctal = /^0o[0-7]+$/i;\n\n /** Used to detect unsigned integer values. */\n var reIsUint = /^(?:0|[1-9]\\d*)$/;\n\n /** Used to match Latin Unicode letters (excluding mathematical operators). */\n var reLatin = /[\\xc0-\\xd6\\xd8-\\xf6\\xf8-\\xff\\u0100-\\u017f]/g;\n\n /** Used to ensure capturing order of template delimiters. */\n var reNoMatch = /($^)/;\n\n /** Used to match unescaped characters in compiled string literals. */\n var reUnescapedString = /['\\n\\r\\u2028\\u2029\\\\]/g;\n\n /** Used to compose unicode character classes. */\n var rsAstralRange = '\\\\ud800-\\\\udfff',\n rsComboMarksRange = '\\\\u0300-\\\\u036f',\n reComboHalfMarksRange = '\\\\ufe20-\\\\ufe2f',\n rsComboSymbolsRange = '\\\\u20d0-\\\\u20ff',\n rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange,\n rsDingbatRange = '\\\\u2700-\\\\u27bf',\n rsLowerRange = 'a-z\\\\xdf-\\\\xf6\\\\xf8-\\\\xff',\n rsMathOpRange = '\\\\xac\\\\xb1\\\\xd7\\\\xf7',\n rsNonCharRange = '\\\\x00-\\\\x2f\\\\x3a-\\\\x40\\\\x5b-\\\\x60\\\\x7b-\\\\xbf',\n rsPunctuationRange = '\\\\u2000-\\\\u206f',\n rsSpaceRange = ' \\\\t\\\\x0b\\\\f\\\\xa0\\\\ufeff\\\\n\\\\r\\\\u2028\\\\u2029\\\\u1680\\\\u180e\\\\u2000\\\\u2001\\\\u2002\\\\u2003\\\\u2004\\\\u2005\\\\u2006\\\\u2007\\\\u2008\\\\u2009\\\\u200a\\\\u202f\\\\u205f\\\\u3000',\n rsUpperRange = 'A-Z\\\\xc0-\\\\xd6\\\\xd8-\\\\xde',\n rsVarRange = '\\\\ufe0e\\\\ufe0f',\n rsBreakRange = rsMathOpRange + rsNonCharRange + rsPunctuationRange + rsSpaceRange;\n\n /** Used to compose unicode capture groups. */\n var rsApos = \"['\\u2019]\",\n rsAstral = '[' + rsAstralRange + ']',\n rsBreak = '[' + rsBreakRange + ']',\n rsCombo = '[' + rsComboRange + ']',\n rsDigits = '\\\\d+',\n rsDingbat = '[' + rsDingbatRange + ']',\n rsLower = '[' + rsLowerRange + ']',\n rsMisc = '[^' + rsAstralRange + rsBreakRange + rsDigits + rsDingbatRange + rsLowerRange + rsUpperRange + ']',\n rsFitz = '\\\\ud83c[\\\\udffb-\\\\udfff]',\n rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',\n rsNonAstral = '[^' + rsAstralRange + ']',\n rsRegional = '(?:\\\\ud83c[\\\\udde6-\\\\uddff]){2}',\n rsSurrPair = '[\\\\ud800-\\\\udbff][\\\\udc00-\\\\udfff]',\n rsUpper = '[' + rsUpperRange + ']',\n rsZWJ = '\\\\u200d';\n\n /** Used to compose unicode regexes. */\n var rsMiscLower = '(?:' + rsLower + '|' + rsMisc + ')',\n rsMiscUpper = '(?:' + rsUpper + '|' + rsMisc + ')',\n rsOptContrLower = '(?:' + rsApos + '(?:d|ll|m|re|s|t|ve))?',\n rsOptContrUpper = '(?:' + rsApos + '(?:D|LL|M|RE|S|T|VE))?',\n reOptMod = rsModifier + '?',\n rsOptVar = '[' + rsVarRange + ']?',\n rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',\n rsOrdLower = '\\\\d*(?:1st|2nd|3rd|(?![123])\\\\dth)(?=\\\\b|[A-Z_])',\n rsOrdUpper = '\\\\d*(?:1ST|2ND|3RD|(?![123])\\\\dTH)(?=\\\\b|[a-z_])',\n rsSeq = rsOptVar + reOptMod + rsOptJoin,\n rsEmoji = '(?:' + [rsDingbat, rsRegional, rsSurrPair].join('|') + ')' + rsSeq,\n rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')';\n\n /** Used to match apostrophes. */\n var reApos = RegExp(rsApos, 'g');\n\n /**\n * Used to match [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks) and\n * [combining diacritical marks for symbols](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks_for_Symbols).\n */\n var reComboMark = RegExp(rsCombo, 'g');\n\n /** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */\n var reUnicode = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g');\n\n /** Used to match complex or compound words. */\n var reUnicodeWord = RegExp([\n rsUpper + '?' + rsLower + '+' + rsOptContrLower + '(?=' + [rsBreak, rsUpper, '$'].join('|') + ')',\n rsMiscUpper + '+' + rsOptContrUpper + '(?=' + [rsBreak, rsUpper + rsMiscLower, '$'].join('|') + ')',\n rsUpper + '?' + rsMiscLower + '+' + rsOptContrLower,\n rsUpper + '+' + rsOptContrUpper,\n rsOrdUpper,\n rsOrdLower,\n rsDigits,\n rsEmoji\n ].join('|'), 'g');\n\n /** Used to detect strings with [zero-width joiners or code points from the astral planes](http://eev.ee/blog/2015/09/12/dark-corners-of-unicode/). */\n var reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange + rsComboRange + rsVarRange + ']');\n\n /** Used to detect strings that need a more robust regexp to match words. */\n var reHasUnicodeWord = /[a-z][A-Z]|[A-Z]{2}[a-z]|[0-9][a-zA-Z]|[a-zA-Z][0-9]|[^a-zA-Z0-9 ]/;\n\n /** Used to assign default `context` object properties. */\n var contextProps = [\n 'Array', 'Buffer', 'DataView', 'Date', 'Error', 'Float32Array', 'Float64Array',\n 'Function', 'Int8Array', 'Int16Array', 'Int32Array', 'Map', 'Math', 'Object',\n 'Promise', 'RegExp', 'Set', 'String', 'Symbol', 'TypeError', 'Uint8Array',\n 'Uint8ClampedArray', 'Uint16Array', 'Uint32Array', 'WeakMap',\n '_', 'clearTimeout', 'isFinite', 'parseInt', 'setTimeout'\n ];\n\n /** Used to make template sourceURLs easier to identify. */\n var templateCounter = -1;\n\n /** Used to identify `toStringTag` values of typed arrays. */\n var typedArrayTags = {};\n typedArrayTags[float32Tag] = typedArrayTags[float64Tag] =\n typedArrayTags[int8Tag] = typedArrayTags[int16Tag] =\n typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] =\n typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] =\n typedArrayTags[uint32Tag] = true;\n typedArrayTags[argsTag] = typedArrayTags[arrayTag] =\n typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] =\n typedArrayTags[dataViewTag] = typedArrayTags[dateTag] =\n typedArrayTags[errorTag] = typedArrayTags[funcTag] =\n typedArrayTags[mapTag] = typedArrayTags[numberTag] =\n typedArrayTags[objectTag] = typedArrayTags[regexpTag] =\n typedArrayTags[setTag] = typedArrayTags[stringTag] =\n typedArrayTags[weakMapTag] = false;\n\n /** Used to identify `toStringTag` values supported by `_.clone`. */\n var cloneableTags = {};\n cloneableTags[argsTag] = cloneableTags[arrayTag] =\n cloneableTags[arrayBufferTag] = cloneableTags[dataViewTag] =\n cloneableTags[boolTag] = cloneableTags[dateTag] =\n cloneableTags[float32Tag] = cloneableTags[float64Tag] =\n cloneableTags[int8Tag] = cloneableTags[int16Tag] =\n cloneableTags[int32Tag] = cloneableTags[mapTag] =\n cloneableTags[numberTag] = cloneableTags[objectTag] =\n cloneableTags[regexpTag] = cloneableTags[setTag] =\n cloneableTags[stringTag] = cloneableTags[symbolTag] =\n cloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] =\n cloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true;\n cloneableTags[errorTag] = cloneableTags[funcTag] =\n cloneableTags[weakMapTag] = false;\n\n /** Used to map Latin Unicode letters to basic Latin letters. */\n var deburredLetters = {\n // Latin-1 Supplement block.\n '\\xc0': 'A', '\\xc1': 'A', '\\xc2': 'A', '\\xc3': 'A', '\\xc4': 'A', '\\xc5': 'A',\n '\\xe0': 'a', '\\xe1': 'a', '\\xe2': 'a', '\\xe3': 'a', '\\xe4': 'a', '\\xe5': 'a',\n '\\xc7': 'C', '\\xe7': 'c',\n '\\xd0': 'D', '\\xf0': 'd',\n '\\xc8': 'E', '\\xc9': 'E', '\\xca': 'E', '\\xcb': 'E',\n '\\xe8': 'e', '\\xe9': 'e', '\\xea': 'e', '\\xeb': 'e',\n '\\xcc': 'I', '\\xcd': 'I', '\\xce': 'I', '\\xcf': 'I',\n '\\xec': 'i', '\\xed': 'i', '\\xee': 'i', '\\xef': 'i',\n '\\xd1': 'N', '\\xf1': 'n',\n '\\xd2': 'O', '\\xd3': 'O', '\\xd4': 'O', '\\xd5': 'O', '\\xd6': 'O', '\\xd8': 'O',\n '\\xf2': 'o', '\\xf3': 'o', '\\xf4': 'o', '\\xf5': 'o', '\\xf6': 'o', '\\xf8': 'o',\n '\\xd9': 'U', '\\xda': 'U', '\\xdb': 'U', '\\xdc': 'U',\n '\\xf9': 'u', '\\xfa': 'u', '\\xfb': 'u', '\\xfc': 'u',\n '\\xdd': 'Y', '\\xfd': 'y', '\\xff': 'y',\n '\\xc6': 'Ae', '\\xe6': 'ae',\n '\\xde': 'Th', '\\xfe': 'th',\n '\\xdf': 'ss',\n // Latin Extended-A block.\n '\\u0100': 'A', '\\u0102': 'A', '\\u0104': 'A',\n '\\u0101': 'a', '\\u0103': 'a', '\\u0105': 'a',\n '\\u0106': 'C', '\\u0108': 'C', '\\u010a': 'C', '\\u010c': 'C',\n '\\u0107': 'c', '\\u0109': 'c', '\\u010b': 'c', '\\u010d': 'c',\n '\\u010e': 'D', '\\u0110': 'D', '\\u010f': 'd', '\\u0111': 'd',\n '\\u0112': 'E', '\\u0114': 'E', '\\u0116': 'E', '\\u0118': 'E', '\\u011a': 'E',\n '\\u0113': 'e', '\\u0115': 'e', '\\u0117': 'e', '\\u0119': 'e', '\\u011b': 'e',\n '\\u011c': 'G', '\\u011e': 'G', '\\u0120': 'G', '\\u0122': 'G',\n '\\u011d': 'g', '\\u011f': 'g', '\\u0121': 'g', '\\u0123': 'g',\n '\\u0124': 'H', '\\u0126': 'H', '\\u0125': 'h', '\\u0127': 'h',\n '\\u0128': 'I', '\\u012a': 'I', '\\u012c': 'I', '\\u012e': 'I', '\\u0130': 'I',\n '\\u0129': 'i', '\\u012b': 'i', '\\u012d': 'i', '\\u012f': 'i', '\\u0131': 'i',\n '\\u0134': 'J', '\\u0135': 'j',\n '\\u0136': 'K', '\\u0137': 'k', '\\u0138': 'k',\n '\\u0139': 'L', '\\u013b': 'L', '\\u013d': 'L', '\\u013f': 'L', '\\u0141': 'L',\n '\\u013a': 'l', '\\u013c': 'l', '\\u013e': 'l', '\\u0140': 'l', '\\u0142': 'l',\n '\\u0143': 'N', '\\u0145': 'N', '\\u0147': 'N', '\\u014a': 'N',\n '\\u0144': 'n', '\\u0146': 'n', '\\u0148': 'n', '\\u014b': 'n',\n '\\u014c': 'O', '\\u014e': 'O', '\\u0150': 'O',\n '\\u014d': 'o', '\\u014f': 'o', '\\u0151': 'o',\n '\\u0154': 'R', '\\u0156': 'R', '\\u0158': 'R',\n '\\u0155': 'r', '\\u0157': 'r', '\\u0159': 'r',\n '\\u015a': 'S', '\\u015c': 'S', '\\u015e': 'S', '\\u0160': 'S',\n '\\u015b': 's', '\\u015d': 's', '\\u015f': 's', '\\u0161': 's',\n '\\u0162': 'T', '\\u0164': 'T', '\\u0166': 'T',\n '\\u0163': 't', '\\u0165': 't', '\\u0167': 't',\n '\\u0168': 'U', '\\u016a': 'U', '\\u016c': 'U', '\\u016e': 'U', '\\u0170': 'U', '\\u0172': 'U',\n '\\u0169': 'u', '\\u016b': 'u', '\\u016d': 'u', '\\u016f': 'u', '\\u0171': 'u', '\\u0173': 'u',\n '\\u0174': 'W', '\\u0175': 'w',\n '\\u0176': 'Y', '\\u0177': 'y', '\\u0178': 'Y',\n '\\u0179': 'Z', '\\u017b': 'Z', '\\u017d': 'Z',\n '\\u017a': 'z', '\\u017c': 'z', '\\u017e': 'z',\n '\\u0132': 'IJ', '\\u0133': 'ij',\n '\\u0152': 'Oe', '\\u0153': 'oe',\n '\\u0149': \"'n\", '\\u017f': 's'\n };\n\n /** Used to map characters to HTML entities. */\n var htmlEscapes = {\n '&': '&',\n '<': '<',\n '>': '>',\n '\"': '"',\n \"'\": '''\n };\n\n /** Used to map HTML entities to characters. */\n var htmlUnescapes = {\n '&': '&',\n '<': '<',\n '>': '>',\n '"': '\"',\n ''': \"'\"\n };\n\n /** Used to escape characters for inclusion in compiled string literals. */\n var stringEscapes = {\n '\\\\': '\\\\',\n \"'\": \"'\",\n '\\n': 'n',\n '\\r': 'r',\n '\\u2028': 'u2028',\n '\\u2029': 'u2029'\n };\n\n /** Built-in method references without a dependency on `root`. */\n var freeParseFloat = parseFloat,\n freeParseInt = parseInt;\n\n /** Detect free variable `global` from Node.js. */\n var freeGlobal = typeof global == 'object' && global && global.Object === Object && global;\n\n /** Detect free variable `self`. */\n var freeSelf = typeof self == 'object' && self && self.Object === Object && self;\n\n /** Used as a reference to the global object. */\n var root = freeGlobal || freeSelf || Function('return this')();\n\n /** Detect free variable `exports`. */\n var freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports;\n\n /** Detect free variable `module`. */\n var freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module;\n\n /** Detect the popular CommonJS extension `module.exports`. */\n var moduleExports = freeModule && freeModule.exports === freeExports;\n\n /** Detect free variable `process` from Node.js. */\n var freeProcess = moduleExports && freeGlobal.process;\n\n /** Used to access faster Node.js helpers. */\n var nodeUtil = (function() {\n try {\n // Use `util.types` for Node.js 10+.\n var types = freeModule && freeModule.require && freeModule.require('util').types;\n\n if (types) {\n return types;\n }\n\n // Legacy `process.binding('util')` for Node.js < 10.\n return freeProcess && freeProcess.binding && freeProcess.binding('util');\n } catch (e) {}\n }());\n\n /* Node.js helper references. */\n var nodeIsArrayBuffer = nodeUtil && nodeUtil.isArrayBuffer,\n nodeIsDate = nodeUtil && nodeUtil.isDate,\n nodeIsMap = nodeUtil && nodeUtil.isMap,\n nodeIsRegExp = nodeUtil && nodeUtil.isRegExp,\n nodeIsSet = nodeUtil && nodeUtil.isSet,\n nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray;\n\n /*--------------------------------------------------------------------------*/\n\n /**\n * A faster alternative to `Function#apply`, this function invokes `func`\n * with the `this` binding of `thisArg` and the arguments of `args`.\n *\n * @private\n * @param {Function} func The function to invoke.\n * @param {*} thisArg The `this` binding of `func`.\n * @param {Array} args The arguments to invoke `func` with.\n * @returns {*} Returns the result of `func`.\n */\n function apply(func, thisArg, args) {\n switch (args.length) {\n case 0: return func.call(thisArg);\n case 1: return func.call(thisArg, args[0]);\n case 2: return func.call(thisArg, args[0], args[1]);\n case 3: return func.call(thisArg, args[0], args[1], args[2]);\n }\n return func.apply(thisArg, args);\n }\n\n /**\n * A specialized version of `baseAggregator` for arrays.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} setter The function to set `accumulator` values.\n * @param {Function} iteratee The iteratee to transform keys.\n * @param {Object} accumulator The initial aggregated object.\n * @returns {Function} Returns `accumulator`.\n */\n function arrayAggregator(array, setter, iteratee, accumulator) {\n var index = -1,\n length = array == null ? 0 : array.length;\n\n while (++index < length) {\n var value = array[index];\n setter(accumulator, value, iteratee(value), array);\n }\n return accumulator;\n }\n\n /**\n * A specialized version of `_.forEach` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns `array`.\n */\n function arrayEach(array, iteratee) {\n var index = -1,\n length = array == null ? 0 : array.length;\n\n while (++index < length) {\n if (iteratee(array[index], index, array) === false) {\n break;\n }\n }\n return array;\n }\n\n /**\n * A specialized version of `_.forEachRight` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns `array`.\n */\n function arrayEachRight(array, iteratee) {\n var length = array == null ? 0 : array.length;\n\n while (length--) {\n if (iteratee(array[length], length, array) === false) {\n break;\n }\n }\n return array;\n }\n\n /**\n * A specialized version of `_.every` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {boolean} Returns `true` if all elements pass the predicate check,\n * else `false`.\n */\n function arrayEvery(array, predicate) {\n var index = -1,\n length = array == null ? 0 : array.length;\n\n while (++index < length) {\n if (!predicate(array[index], index, array)) {\n return false;\n }\n }\n return true;\n }\n\n /**\n * A specialized version of `_.filter` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {Array} Returns the new filtered array.\n */\n function arrayFilter(array, predicate) {\n var index = -1,\n length = array == null ? 0 : array.length,\n resIndex = 0,\n result = [];\n\n while (++index < length) {\n var value = array[index];\n if (predicate(value, index, array)) {\n result[resIndex++] = value;\n }\n }\n return result;\n }\n\n /**\n * A specialized version of `_.includes` for arrays without support for\n * specifying an index to search from.\n *\n * @private\n * @param {Array} [array] The array to inspect.\n * @param {*} target The value to search for.\n * @returns {boolean} Returns `true` if `target` is found, else `false`.\n */\n function arrayIncludes(array, value) {\n var length = array == null ? 0 : array.length;\n return !!length && baseIndexOf(array, value, 0) > -1;\n }\n\n /**\n * This function is like `arrayIncludes` except that it accepts a comparator.\n *\n * @private\n * @param {Array} [array] The array to inspect.\n * @param {*} target The value to search for.\n * @param {Function} comparator The comparator invoked per element.\n * @returns {boolean} Returns `true` if `target` is found, else `false`.\n */\n function arrayIncludesWith(array, value, comparator) {\n var index = -1,\n length = array == null ? 0 : array.length;\n\n while (++index < length) {\n if (comparator(value, array[index])) {\n return true;\n }\n }\n return false;\n }\n\n /**\n * A specialized version of `_.map` for arrays without support for iteratee\n * shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns the new mapped array.\n */\n function arrayMap(array, iteratee) {\n var index = -1,\n length = array == null ? 0 : array.length,\n result = Array(length);\n\n while (++index < length) {\n result[index] = iteratee(array[index], index, array);\n }\n return result;\n }\n\n /**\n * Appends the elements of `values` to `array`.\n *\n * @private\n * @param {Array} array The array to modify.\n * @param {Array} values The values to append.\n * @returns {Array} Returns `array`.\n */\n function arrayPush(array, values) {\n var index = -1,\n length = values.length,\n offset = array.length;\n\n while (++index < length) {\n array[offset + index] = values[index];\n }\n return array;\n }\n\n /**\n * A specialized version of `_.reduce` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @param {*} [accumulator] The initial value.\n * @param {boolean} [initAccum] Specify using the first element of `array` as\n * the initial value.\n * @returns {*} Returns the accumulated value.\n */\n function arrayReduce(array, iteratee, accumulator, initAccum) {\n var index = -1,\n length = array == null ? 0 : array.length;\n\n if (initAccum && length) {\n accumulator = array[++index];\n }\n while (++index < length) {\n accumulator = iteratee(accumulator, array[index], index, array);\n }\n return accumulator;\n }\n\n /**\n * A specialized version of `_.reduceRight` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @param {*} [accumulator] The initial value.\n * @param {boolean} [initAccum] Specify using the last element of `array` as\n * the initial value.\n * @returns {*} Returns the accumulated value.\n */\n function arrayReduceRight(array, iteratee, accumulator, initAccum) {\n var length = array == null ? 0 : array.length;\n if (initAccum && length) {\n accumulator = array[--length];\n }\n while (length--) {\n accumulator = iteratee(accumulator, array[length], length, array);\n }\n return accumulator;\n }\n\n /**\n * A specialized version of `_.some` for arrays without support for iteratee\n * shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {boolean} Returns `true` if any element passes the predicate check,\n * else `false`.\n */\n function arraySome(array, predicate) {\n var index = -1,\n length = array == null ? 0 : array.length;\n\n while (++index < length) {\n if (predicate(array[index], index, array)) {\n return true;\n }\n }\n return false;\n }\n\n /**\n * Gets the size of an ASCII `string`.\n *\n * @private\n * @param {string} string The string inspect.\n * @returns {number} Returns the string size.\n */\n var asciiSize = baseProperty('length');\n\n /**\n * Converts an ASCII `string` to an array.\n *\n * @private\n * @param {string} string The string to convert.\n * @returns {Array} Returns the converted array.\n */\n function asciiToArray(string) {\n return string.split('');\n }\n\n /**\n * Splits an ASCII `string` into an array of its words.\n *\n * @private\n * @param {string} The string to inspect.\n * @returns {Array} Returns the words of `string`.\n */\n function asciiWords(string) {\n return string.match(reAsciiWord) || [];\n }\n\n /**\n * The base implementation of methods like `_.findKey` and `_.findLastKey`,\n * without support for iteratee shorthands, which iterates over `collection`\n * using `eachFunc`.\n *\n * @private\n * @param {Array|Object} collection The collection to inspect.\n * @param {Function} predicate The function invoked per iteration.\n * @param {Function} eachFunc The function to iterate over `collection`.\n * @returns {*} Returns the found element or its key, else `undefined`.\n */\n function baseFindKey(collection, predicate, eachFunc) {\n var result;\n eachFunc(collection, function(value, key, collection) {\n if (predicate(value, key, collection)) {\n result = key;\n return false;\n }\n });\n return result;\n }\n\n /**\n * The base implementation of `_.findIndex` and `_.findLastIndex` without\n * support for iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {Function} predicate The function invoked per iteration.\n * @param {number} fromIndex The index to search from.\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\n function baseFindIndex(array, predicate, fromIndex, fromRight) {\n var length = array.length,\n index = fromIndex + (fromRight ? 1 : -1);\n\n while ((fromRight ? index-- : ++index < length)) {\n if (predicate(array[index], index, array)) {\n return index;\n }\n }\n return -1;\n }\n\n /**\n * The base implementation of `_.indexOf` without `fromIndex` bounds checks.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @param {number} fromIndex The index to search from.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\n function baseIndexOf(array, value, fromIndex) {\n return value === value\n ? strictIndexOf(array, value, fromIndex)\n : baseFindIndex(array, baseIsNaN, fromIndex);\n }\n\n /**\n * This function is like `baseIndexOf` except that it accepts a comparator.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @param {number} fromIndex The index to search from.\n * @param {Function} comparator The comparator invoked per element.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\n function baseIndexOfWith(array, value, fromIndex, comparator) {\n var index = fromIndex - 1,\n length = array.length;\n\n while (++index < length) {\n if (comparator(array[index], value)) {\n return index;\n }\n }\n return -1;\n }\n\n /**\n * The base implementation of `_.isNaN` without support for number objects.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.\n */\n function baseIsNaN(value) {\n return value !== value;\n }\n\n /**\n * The base implementation of `_.mean` and `_.meanBy` without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {number} Returns the mean.\n */\n function baseMean(array, iteratee) {\n var length = array == null ? 0 : array.length;\n return length ? (baseSum(array, iteratee) / length) : NAN;\n }\n\n /**\n * The base implementation of `_.property` without support for deep paths.\n *\n * @private\n * @param {string} key The key of the property to get.\n * @returns {Function} Returns the new accessor function.\n */\n function baseProperty(key) {\n return function(object) {\n return object == null ? undefined : object[key];\n };\n }\n\n /**\n * The base implementation of `_.propertyOf` without support for deep paths.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Function} Returns the new accessor function.\n */\n function basePropertyOf(object) {\n return function(key) {\n return object == null ? undefined : object[key];\n };\n }\n\n /**\n * The base implementation of `_.reduce` and `_.reduceRight`, without support\n * for iteratee shorthands, which iterates over `collection` using `eachFunc`.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @param {*} accumulator The initial value.\n * @param {boolean} initAccum Specify using the first or last element of\n * `collection` as the initial value.\n * @param {Function} eachFunc The function to iterate over `collection`.\n * @returns {*} Returns the accumulated value.\n */\n function baseReduce(collection, iteratee, accumulator, initAccum, eachFunc) {\n eachFunc(collection, function(value, index, collection) {\n accumulator = initAccum\n ? (initAccum = false, value)\n : iteratee(accumulator, value, index, collection);\n });\n return accumulator;\n }\n\n /**\n * The base implementation of `_.sortBy` which uses `comparer` to define the\n * sort order of `array` and replaces criteria objects with their corresponding\n * values.\n *\n * @private\n * @param {Array} array The array to sort.\n * @param {Function} comparer The function to define sort order.\n * @returns {Array} Returns `array`.\n */\n function baseSortBy(array, comparer) {\n var length = array.length;\n\n array.sort(comparer);\n while (length--) {\n array[length] = array[length].value;\n }\n return array;\n }\n\n /**\n * The base implementation of `_.sum` and `_.sumBy` without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {number} Returns the sum.\n */\n function baseSum(array, iteratee) {\n var result,\n index = -1,\n length = array.length;\n\n while (++index < length) {\n var current = iteratee(array[index]);\n if (current !== undefined) {\n result = result === undefined ? current : (result + current);\n }\n }\n return result;\n }\n\n /**\n * The base implementation of `_.times` without support for iteratee shorthands\n * or max array length checks.\n *\n * @private\n * @param {number} n The number of times to invoke `iteratee`.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns the array of results.\n */\n function baseTimes(n, iteratee) {\n var index = -1,\n result = Array(n);\n\n while (++index < n) {\n result[index] = iteratee(index);\n }\n return result;\n }\n\n /**\n * The base implementation of `_.toPairs` and `_.toPairsIn` which creates an array\n * of key-value pairs for `object` corresponding to the property names of `props`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array} props The property names to get values for.\n * @returns {Object} Returns the key-value pairs.\n */\n function baseToPairs(object, props) {\n return arrayMap(props, function(key) {\n return [key, object[key]];\n });\n }\n\n /**\n * The base implementation of `_.trim`.\n *\n * @private\n * @param {string} string The string to trim.\n * @returns {string} Returns the trimmed string.\n */\n function baseTrim(string) {\n return string\n ? string.slice(0, trimmedEndIndex(string) + 1).replace(reTrimStart, '')\n : string;\n }\n\n /**\n * The base implementation of `_.unary` without support for storing metadata.\n *\n * @private\n * @param {Function} func The function to cap arguments for.\n * @returns {Function} Returns the new capped function.\n */\n function baseUnary(func) {\n return function(value) {\n return func(value);\n };\n }\n\n /**\n * The base implementation of `_.values` and `_.valuesIn` which creates an\n * array of `object` property values corresponding to the property names\n * of `props`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array} props The property names to get values for.\n * @returns {Object} Returns the array of property values.\n */\n function baseValues(object, props) {\n return arrayMap(props, function(key) {\n return object[key];\n });\n }\n\n /**\n * Checks if a `cache` value for `key` exists.\n *\n * @private\n * @param {Object} cache The cache to query.\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\n function cacheHas(cache, key) {\n return cache.has(key);\n }\n\n /**\n * Used by `_.trim` and `_.trimStart` to get the index of the first string symbol\n * that is not found in the character symbols.\n *\n * @private\n * @param {Array} strSymbols The string symbols to inspect.\n * @param {Array} chrSymbols The character symbols to find.\n * @returns {number} Returns the index of the first unmatched string symbol.\n */\n function charsStartIndex(strSymbols, chrSymbols) {\n var index = -1,\n length = strSymbols.length;\n\n while (++index < length && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}\n return index;\n }\n\n /**\n * Used by `_.trim` and `_.trimEnd` to get the index of the last string symbol\n * that is not found in the character symbols.\n *\n * @private\n * @param {Array} strSymbols The string symbols to inspect.\n * @param {Array} chrSymbols The character symbols to find.\n * @returns {number} Returns the index of the last unmatched string symbol.\n */\n function charsEndIndex(strSymbols, chrSymbols) {\n var index = strSymbols.length;\n\n while (index-- && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}\n return index;\n }\n\n /**\n * Gets the number of `placeholder` occurrences in `array`.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {*} placeholder The placeholder to search for.\n * @returns {number} Returns the placeholder count.\n */\n function countHolders(array, placeholder) {\n var length = array.length,\n result = 0;\n\n while (length--) {\n if (array[length] === placeholder) {\n ++result;\n }\n }\n return result;\n }\n\n /**\n * Used by `_.deburr` to convert Latin-1 Supplement and Latin Extended-A\n * letters to basic Latin letters.\n *\n * @private\n * @param {string} letter The matched letter to deburr.\n * @returns {string} Returns the deburred letter.\n */\n var deburrLetter = basePropertyOf(deburredLetters);\n\n /**\n * Used by `_.escape` to convert characters to HTML entities.\n *\n * @private\n * @param {string} chr The matched character to escape.\n * @returns {string} Returns the escaped character.\n */\n var escapeHtmlChar = basePropertyOf(htmlEscapes);\n\n /**\n * Used by `_.template` to escape characters for inclusion in compiled string literals.\n *\n * @private\n * @param {string} chr The matched character to escape.\n * @returns {string} Returns the escaped character.\n */\n function escapeStringChar(chr) {\n return '\\\\' + stringEscapes[chr];\n }\n\n /**\n * Gets the value at `key` of `object`.\n *\n * @private\n * @param {Object} [object] The object to query.\n * @param {string} key The key of the property to get.\n * @returns {*} Returns the property value.\n */\n function getValue(object, key) {\n return object == null ? undefined : object[key];\n }\n\n /**\n * Checks if `string` contains Unicode symbols.\n *\n * @private\n * @param {string} string The string to inspect.\n * @returns {boolean} Returns `true` if a symbol is found, else `false`.\n */\n function hasUnicode(string) {\n return reHasUnicode.test(string);\n }\n\n /**\n * Checks if `string` contains a word composed of Unicode symbols.\n *\n * @private\n * @param {string} string The string to inspect.\n * @returns {boolean} Returns `true` if a word is found, else `false`.\n */\n function hasUnicodeWord(string) {\n return reHasUnicodeWord.test(string);\n }\n\n /**\n * Converts `iterator` to an array.\n *\n * @private\n * @param {Object} iterator The iterator to convert.\n * @returns {Array} Returns the converted array.\n */\n function iteratorToArray(iterator) {\n var data,\n result = [];\n\n while (!(data = iterator.next()).done) {\n result.push(data.value);\n }\n return result;\n }\n\n /**\n * Converts `map` to its key-value pairs.\n *\n * @private\n * @param {Object} map The map to convert.\n * @returns {Array} Returns the key-value pairs.\n */\n function mapToArray(map) {\n var index = -1,\n result = Array(map.size);\n\n map.forEach(function(value, key) {\n result[++index] = [key, value];\n });\n return result;\n }\n\n /**\n * Creates a unary function that invokes `func` with its argument transformed.\n *\n * @private\n * @param {Function} func The function to wrap.\n * @param {Function} transform The argument transform.\n * @returns {Function} Returns the new function.\n */\n function overArg(func, transform) {\n return function(arg) {\n return func(transform(arg));\n };\n }\n\n /**\n * Replaces all `placeholder` elements in `array` with an internal placeholder\n * and returns an array of their indexes.\n *\n * @private\n * @param {Array} array The array to modify.\n * @param {*} placeholder The placeholder to replace.\n * @returns {Array} Returns the new array of placeholder indexes.\n */\n function replaceHolders(array, placeholder) {\n var index = -1,\n length = array.length,\n resIndex = 0,\n result = [];\n\n while (++index < length) {\n var value = array[index];\n if (value === placeholder || value === PLACEHOLDER) {\n array[index] = PLACEHOLDER;\n result[resIndex++] = index;\n }\n }\n return result;\n }\n\n /**\n * Converts `set` to an array of its values.\n *\n * @private\n * @param {Object} set The set to convert.\n * @returns {Array} Returns the values.\n */\n function setToArray(set) {\n var index = -1,\n result = Array(set.size);\n\n set.forEach(function(value) {\n result[++index] = value;\n });\n return result;\n }\n\n /**\n * Converts `set` to its value-value pairs.\n *\n * @private\n * @param {Object} set The set to convert.\n * @returns {Array} Returns the value-value pairs.\n */\n function setToPairs(set) {\n var index = -1,\n result = Array(set.size);\n\n set.forEach(function(value) {\n result[++index] = [value, value];\n });\n return result;\n }\n\n /**\n * A specialized version of `_.indexOf` which performs strict equality\n * comparisons of values, i.e. `===`.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @param {number} fromIndex The index to search from.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\n function strictIndexOf(array, value, fromIndex) {\n var index = fromIndex - 1,\n length = array.length;\n\n while (++index < length) {\n if (array[index] === value) {\n return index;\n }\n }\n return -1;\n }\n\n /**\n * A specialized version of `_.lastIndexOf` which performs strict equality\n * comparisons of values, i.e. `===`.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @param {number} fromIndex The index to search from.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\n function strictLastIndexOf(array, value, fromIndex) {\n var index = fromIndex + 1;\n while (index--) {\n if (array[index] === value) {\n return index;\n }\n }\n return index;\n }\n\n /**\n * Gets the number of symbols in `string`.\n *\n * @private\n * @param {string} string The string to inspect.\n * @returns {number} Returns the string size.\n */\n function stringSize(string) {\n return hasUnicode(string)\n ? unicodeSize(string)\n : asciiSize(string);\n }\n\n /**\n * Converts `string` to an array.\n *\n * @private\n * @param {string} string The string to convert.\n * @returns {Array} Returns the converted array.\n */\n function stringToArray(string) {\n return hasUnicode(string)\n ? unicodeToArray(string)\n : asciiToArray(string);\n }\n\n /**\n * Used by `_.trim` and `_.trimEnd` to get the index of the last non-whitespace\n * character of `string`.\n *\n * @private\n * @param {string} string The string to inspect.\n * @returns {number} Returns the index of the last non-whitespace character.\n */\n function trimmedEndIndex(string) {\n var index = string.length;\n\n while (index-- && reWhitespace.test(string.charAt(index))) {}\n return index;\n }\n\n /**\n * Used by `_.unescape` to convert HTML entities to characters.\n *\n * @private\n * @param {string} chr The matched character to unescape.\n * @returns {string} Returns the unescaped character.\n */\n var unescapeHtmlChar = basePropertyOf(htmlUnescapes);\n\n /**\n * Gets the size of a Unicode `string`.\n *\n * @private\n * @param {string} string The string inspect.\n * @returns {number} Returns the string size.\n */\n function unicodeSize(string) {\n var result = reUnicode.lastIndex = 0;\n while (reUnicode.test(string)) {\n ++result;\n }\n return result;\n }\n\n /**\n * Converts a Unicode `string` to an array.\n *\n * @private\n * @param {string} string The string to convert.\n * @returns {Array} Returns the converted array.\n */\n function unicodeToArray(string) {\n return string.match(reUnicode) || [];\n }\n\n /**\n * Splits a Unicode `string` into an array of its words.\n *\n * @private\n * @param {string} The string to inspect.\n * @returns {Array} Returns the words of `string`.\n */\n function unicodeWords(string) {\n return string.match(reUnicodeWord) || [];\n }\n\n /*--------------------------------------------------------------------------*/\n\n /**\n * Create a new pristine `lodash` function using the `context` object.\n *\n * @static\n * @memberOf _\n * @since 1.1.0\n * @category Util\n * @param {Object} [context=root] The context object.\n * @returns {Function} Returns a new `lodash` function.\n * @example\n *\n * _.mixin({ 'foo': _.constant('foo') });\n *\n * var lodash = _.runInContext();\n * lodash.mixin({ 'bar': lodash.constant('bar') });\n *\n * _.isFunction(_.foo);\n * // => true\n * _.isFunction(_.bar);\n * // => false\n *\n * lodash.isFunction(lodash.foo);\n * // => false\n * lodash.isFunction(lodash.bar);\n * // => true\n *\n * // Create a suped-up `defer` in Node.js.\n * var defer = _.runInContext({ 'setTimeout': setImmediate }).defer;\n */\n var runInContext = (function runInContext(context) {\n context = context == null ? root : _.defaults(root.Object(), context, _.pick(root, contextProps));\n\n /** Built-in constructor references. */\n var Array = context.Array,\n Date = context.Date,\n Error = context.Error,\n Function = context.Function,\n Math = context.Math,\n Object = context.Object,\n RegExp = context.RegExp,\n String = context.String,\n TypeError = context.TypeError;\n\n /** Used for built-in method references. */\n var arrayProto = Array.prototype,\n funcProto = Function.prototype,\n objectProto = Object.prototype;\n\n /** Used to detect overreaching core-js shims. */\n var coreJsData = context['__core-js_shared__'];\n\n /** Used to resolve the decompiled source of functions. */\n var funcToString = funcProto.toString;\n\n /** Used to check objects for own properties. */\n var hasOwnProperty = objectProto.hasOwnProperty;\n\n /** Used to generate unique IDs. */\n var idCounter = 0;\n\n /** Used to detect methods masquerading as native. */\n var maskSrcKey = (function() {\n var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || '');\n return uid ? ('Symbol(src)_1.' + uid) : '';\n }());\n\n /**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)\n * of values.\n */\n var nativeObjectToString = objectProto.toString;\n\n /** Used to infer the `Object` constructor. */\n var objectCtorString = funcToString.call(Object);\n\n /** Used to restore the original `_` reference in `_.noConflict`. */\n var oldDash = root._;\n\n /** Used to detect if a method is native. */\n var reIsNative = RegExp('^' +\n funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\\\$&')\n .replace(/hasOwnProperty|(function).*?(?=\\\\\\()| for .+?(?=\\\\\\])/g, '$1.*?') + '$'\n );\n\n /** Built-in value references. */\n var Buffer = moduleExports ? context.Buffer : undefined,\n Symbol = context.Symbol,\n Uint8Array = context.Uint8Array,\n allocUnsafe = Buffer ? Buffer.allocUnsafe : undefined,\n getPrototype = overArg(Object.getPrototypeOf, Object),\n objectCreate = Object.create,\n propertyIsEnumerable = objectProto.propertyIsEnumerable,\n splice = arrayProto.splice,\n spreadableSymbol = Symbol ? Symbol.isConcatSpreadable : undefined,\n symIterator = Symbol ? Symbol.iterator : undefined,\n symToStringTag = Symbol ? Symbol.toStringTag : undefined;\n\n var defineProperty = (function() {\n try {\n var func = getNative(Object, 'defineProperty');\n func({}, '', {});\n return func;\n } catch (e) {}\n }());\n\n /** Mocked built-ins. */\n var ctxClearTimeout = context.clearTimeout !== root.clearTimeout && context.clearTimeout,\n ctxNow = Date && Date.now !== root.Date.now && Date.now,\n ctxSetTimeout = context.setTimeout !== root.setTimeout && context.setTimeout;\n\n /* Built-in method references for those with the same name as other `lodash` methods. */\n var nativeCeil = Math.ceil,\n nativeFloor = Math.floor,\n nativeGetSymbols = Object.getOwnPropertySymbols,\n nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined,\n nativeIsFinite = context.isFinite,\n nativeJoin = arrayProto.join,\n nativeKeys = overArg(Object.keys, Object),\n nativeMax = Math.max,\n nativeMin = Math.min,\n nativeNow = Date.now,\n nativeParseInt = context.parseInt,\n nativeRandom = Math.random,\n nativeReverse = arrayProto.reverse;\n\n /* Built-in method references that are verified to be native. */\n var DataView = getNative(context, 'DataView'),\n Map = getNative(context, 'Map'),\n Promise = getNative(context, 'Promise'),\n Set = getNative(context, 'Set'),\n WeakMap = getNative(context, 'WeakMap'),\n nativeCreate = getNative(Object, 'create');\n\n /** Used to store function metadata. */\n var metaMap = WeakMap && new WeakMap;\n\n /** Used to lookup unminified function names. */\n var realNames = {};\n\n /** Used to detect maps, sets, and weakmaps. */\n var dataViewCtorString = toSource(DataView),\n mapCtorString = toSource(Map),\n promiseCtorString = toSource(Promise),\n setCtorString = toSource(Set),\n weakMapCtorString = toSource(WeakMap);\n\n /** Used to convert symbols to primitives and strings. */\n var symbolProto = Symbol ? Symbol.prototype : undefined,\n symbolValueOf = symbolProto ? symbolProto.valueOf : undefined,\n symbolToString = symbolProto ? symbolProto.toString : undefined;\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates a `lodash` object which wraps `value` to enable implicit method\n * chain sequences. Methods that operate on and return arrays, collections,\n * and functions can be chained together. Methods that retrieve a single value\n * or may return a primitive value will automatically end the chain sequence\n * and return the unwrapped value. Otherwise, the value must be unwrapped\n * with `_#value`.\n *\n * Explicit chain sequences, which must be unwrapped with `_#value`, may be\n * enabled using `_.chain`.\n *\n * The execution of chained methods is lazy, that is, it's deferred until\n * `_#value` is implicitly or explicitly called.\n *\n * Lazy evaluation allows several methods to support shortcut fusion.\n * Shortcut fusion is an optimization to merge iteratee calls; this avoids\n * the creation of intermediate arrays and can greatly reduce the number of\n * iteratee executions. Sections of a chain sequence qualify for shortcut\n * fusion if the section is applied to an array and iteratees accept only\n * one argument. The heuristic for whether a section qualifies for shortcut\n * fusion is subject to change.\n *\n * Chaining is supported in custom builds as long as the `_#value` method is\n * directly or indirectly included in the build.\n *\n * In addition to lodash methods, wrappers have `Array` and `String` methods.\n *\n * The wrapper `Array` methods are:\n * `concat`, `join`, `pop`, `push`, `shift`, `sort`, `splice`, and `unshift`\n *\n * The wrapper `String` methods are:\n * `replace` and `split`\n *\n * The wrapper methods that support shortcut fusion are:\n * `at`, `compact`, `drop`, `dropRight`, `dropWhile`, `filter`, `find`,\n * `findLast`, `head`, `initial`, `last`, `map`, `reject`, `reverse`, `slice`,\n * `tail`, `take`, `takeRight`, `takeRightWhile`, `takeWhile`, and `toArray`\n *\n * The chainable wrapper methods are:\n * `after`, `ary`, `assign`, `assignIn`, `assignInWith`, `assignWith`, `at`,\n * `before`, `bind`, `bindAll`, `bindKey`, `castArray`, `chain`, `chunk`,\n * `commit`, `compact`, `concat`, `conforms`, `constant`, `countBy`, `create`,\n * `curry`, `debounce`, `defaults`, `defaultsDeep`, `defer`, `delay`,\n * `difference`, `differenceBy`, `differenceWith`, `drop`, `dropRight`,\n * `dropRightWhile`, `dropWhile`, `extend`, `extendWith`, `fill`, `filter`,\n * `flatMap`, `flatMapDeep`, `flatMapDepth`, `flatten`, `flattenDeep`,\n * `flattenDepth`, `flip`, `flow`, `flowRight`, `fromPairs`, `functions`,\n * `functionsIn`, `groupBy`, `initial`, `intersection`, `intersectionBy`,\n * `intersectionWith`, `invert`, `invertBy`, `invokeMap`, `iteratee`, `keyBy`,\n * `keys`, `keysIn`, `map`, `mapKeys`, `mapValues`, `matches`, `matchesProperty`,\n * `memoize`, `merge`, `mergeWith`, `method`, `methodOf`, `mixin`, `negate`,\n * `nthArg`, `omit`, `omitBy`, `once`, `orderBy`, `over`, `overArgs`,\n * `overEvery`, `overSome`, `partial`, `partialRight`, `partition`, `pick`,\n * `pickBy`, `plant`, `property`, `propertyOf`, `pull`, `pullAll`, `pullAllBy`,\n * `pullAllWith`, `pullAt`, `push`, `range`, `rangeRight`, `rearg`, `reject`,\n * `remove`, `rest`, `reverse`, `sampleSize`, `set`, `setWith`, `shuffle`,\n * `slice`, `sort`, `sortBy`, `splice`, `spread`, `tail`, `take`, `takeRight`,\n * `takeRightWhile`, `takeWhile`, `tap`, `throttle`, `thru`, `toArray`,\n * `toPairs`, `toPairsIn`, `toPath`, `toPlainObject`, `transform`, `unary`,\n * `union`, `unionBy`, `unionWith`, `uniq`, `uniqBy`, `uniqWith`, `unset`,\n * `unshift`, `unzip`, `unzipWith`, `update`, `updateWith`, `values`,\n * `valuesIn`, `without`, `wrap`, `xor`, `xorBy`, `xorWith`, `zip`,\n * `zipObject`, `zipObjectDeep`, and `zipWith`\n *\n * The wrapper methods that are **not** chainable by default are:\n * `add`, `attempt`, `camelCase`, `capitalize`, `ceil`, `clamp`, `clone`,\n * `cloneDeep`, `cloneDeepWith`, `cloneWith`, `conformsTo`, `deburr`,\n * `defaultTo`, `divide`, `each`, `eachRight`, `endsWith`, `eq`, `escape`,\n * `escapeRegExp`, `every`, `find`, `findIndex`, `findKey`, `findLast`,\n * `findLastIndex`, `findLastKey`, `first`, `floor`, `forEach`, `forEachRight`,\n * `forIn`, `forInRight`, `forOwn`, `forOwnRight`, `get`, `gt`, `gte`, `has`,\n * `hasIn`, `head`, `identity`, `includes`, `indexOf`, `inRange`, `invoke`,\n * `isArguments`, `isArray`, `isArrayBuffer`, `isArrayLike`, `isArrayLikeObject`,\n * `isBoolean`, `isBuffer`, `isDate`, `isElement`, `isEmpty`, `isEqual`,\n * `isEqualWith`, `isError`, `isFinite`, `isFunction`, `isInteger`, `isLength`,\n * `isMap`, `isMatch`, `isMatchWith`, `isNaN`, `isNative`, `isNil`, `isNull`,\n * `isNumber`, `isObject`, `isObjectLike`, `isPlainObject`, `isRegExp`,\n * `isSafeInteger`, `isSet`, `isString`, `isUndefined`, `isTypedArray`,\n * `isWeakMap`, `isWeakSet`, `join`, `kebabCase`, `last`, `lastIndexOf`,\n * `lowerCase`, `lowerFirst`, `lt`, `lte`, `max`, `maxBy`, `mean`, `meanBy`,\n * `min`, `minBy`, `multiply`, `noConflict`, `noop`, `now`, `nth`, `pad`,\n * `padEnd`, `padStart`, `parseInt`, `pop`, `random`, `reduce`, `reduceRight`,\n * `repeat`, `result`, `round`, `runInContext`, `sample`, `shift`, `size`,\n * `snakeCase`, `some`, `sortedIndex`, `sortedIndexBy`, `sortedLastIndex`,\n * `sortedLastIndexBy`, `startCase`, `startsWith`, `stubArray`, `stubFalse`,\n * `stubObject`, `stubString`, `stubTrue`, `subtract`, `sum`, `sumBy`,\n * `template`, `times`, `toFinite`, `toInteger`, `toJSON`, `toLength`,\n * `toLower`, `toNumber`, `toSafeInteger`, `toString`, `toUpper`, `trim`,\n * `trimEnd`, `trimStart`, `truncate`, `unescape`, `uniqueId`, `upperCase`,\n * `upperFirst`, `value`, and `words`\n *\n * @name _\n * @constructor\n * @category Seq\n * @param {*} value The value to wrap in a `lodash` instance.\n * @returns {Object} Returns the new `lodash` wrapper instance.\n * @example\n *\n * function square(n) {\n * return n * n;\n * }\n *\n * var wrapped = _([1, 2, 3]);\n *\n * // Returns an unwrapped value.\n * wrapped.reduce(_.add);\n * // => 6\n *\n * // Returns a wrapped value.\n * var squares = wrapped.map(square);\n *\n * _.isArray(squares);\n * // => false\n *\n * _.isArray(squares.value());\n * // => true\n */\n function lodash(value) {\n if (isObjectLike(value) && !isArray(value) && !(value instanceof LazyWrapper)) {\n if (value instanceof LodashWrapper) {\n return value;\n }\n if (hasOwnProperty.call(value, '__wrapped__')) {\n return wrapperClone(value);\n }\n }\n return new LodashWrapper(value);\n }\n\n /**\n * The base implementation of `_.create` without support for assigning\n * properties to the created object.\n *\n * @private\n * @param {Object} proto The object to inherit from.\n * @returns {Object} Returns the new object.\n */\n var baseCreate = (function() {\n function object() {}\n return function(proto) {\n if (!isObject(proto)) {\n return {};\n }\n if (objectCreate) {\n return objectCreate(proto);\n }\n object.prototype = proto;\n var result = new object;\n object.prototype = undefined;\n return result;\n };\n }());\n\n /**\n * The function whose prototype chain sequence wrappers inherit from.\n *\n * @private\n */\n function baseLodash() {\n // No operation performed.\n }\n\n /**\n * The base constructor for creating `lodash` wrapper objects.\n *\n * @private\n * @param {*} value The value to wrap.\n * @param {boolean} [chainAll] Enable explicit method chain sequences.\n */\n function LodashWrapper(value, chainAll) {\n this.__wrapped__ = value;\n this.__actions__ = [];\n this.__chain__ = !!chainAll;\n this.__index__ = 0;\n this.__values__ = undefined;\n }\n\n /**\n * By default, the template delimiters used by lodash are like those in\n * embedded Ruby (ERB) as well as ES2015 template strings. Change the\n * following template settings to use alternative delimiters.\n *\n * **Security:** See\n * [threat model](https://github.com/lodash/lodash/blob/main/threat-model.md)\n * \u2014 `_.template` is insecure and will be removed in v5.\n *\n * @static\n * @memberOf _\n * @type {Object}\n */\n lodash.templateSettings = {\n\n /**\n * Used to detect `data` property values to be HTML-escaped.\n *\n * @memberOf _.templateSettings\n * @type {RegExp}\n */\n 'escape': reEscape,\n\n /**\n * Used to detect code to be evaluated.\n *\n * @memberOf _.templateSettings\n * @type {RegExp}\n */\n 'evaluate': reEvaluate,\n\n /**\n * Used to detect `data` property values to inject.\n *\n * @memberOf _.templateSettings\n * @type {RegExp}\n */\n 'interpolate': reInterpolate,\n\n /**\n * Used to reference the data object in the template text.\n *\n * @memberOf _.templateSettings\n * @type {string}\n */\n 'variable': '',\n\n /**\n * Used to import variables into the compiled template.\n *\n * @memberOf _.templateSettings\n * @type {Object}\n */\n 'imports': {\n\n /**\n * A reference to the `lodash` function.\n *\n * @memberOf _.templateSettings.imports\n * @type {Function}\n */\n '_': lodash\n }\n };\n\n // Ensure wrappers are instances of `baseLodash`.\n lodash.prototype = baseLodash.prototype;\n lodash.prototype.constructor = lodash;\n\n LodashWrapper.prototype = baseCreate(baseLodash.prototype);\n LodashWrapper.prototype.constructor = LodashWrapper;\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates a lazy wrapper object which wraps `value` to enable lazy evaluation.\n *\n * @private\n * @constructor\n * @param {*} value The value to wrap.\n */\n function LazyWrapper(value) {\n this.__wrapped__ = value;\n this.__actions__ = [];\n this.__dir__ = 1;\n this.__filtered__ = false;\n this.__iteratees__ = [];\n this.__takeCount__ = MAX_ARRAY_LENGTH;\n this.__views__ = [];\n }\n\n /**\n * Creates a clone of the lazy wrapper object.\n *\n * @private\n * @name clone\n * @memberOf LazyWrapper\n * @returns {Object} Returns the cloned `LazyWrapper` object.\n */\n function lazyClone() {\n var result = new LazyWrapper(this.__wrapped__);\n result.__actions__ = copyArray(this.__actions__);\n result.__dir__ = this.__dir__;\n result.__filtered__ = this.__filtered__;\n result.__iteratees__ = copyArray(this.__iteratees__);\n result.__takeCount__ = this.__takeCount__;\n result.__views__ = copyArray(this.__views__);\n return result;\n }\n\n /**\n * Reverses the direction of lazy iteration.\n *\n * @private\n * @name reverse\n * @memberOf LazyWrapper\n * @returns {Object} Returns the new reversed `LazyWrapper` object.\n */\n function lazyReverse() {\n if (this.__filtered__) {\n var result = new LazyWrapper(this);\n result.__dir__ = -1;\n result.__filtered__ = true;\n } else {\n result = this.clone();\n result.__dir__ *= -1;\n }\n return result;\n }\n\n /**\n * Extracts the unwrapped value from its lazy wrapper.\n *\n * @private\n * @name value\n * @memberOf LazyWrapper\n * @returns {*} Returns the unwrapped value.\n */\n function lazyValue() {\n var array = this.__wrapped__.value(),\n dir = this.__dir__,\n isArr = isArray(array),\n isRight = dir < 0,\n arrLength = isArr ? array.length : 0,\n view = getView(0, arrLength, this.__views__),\n start = view.start,\n end = view.end,\n length = end - start,\n index = isRight ? end : (start - 1),\n iteratees = this.__iteratees__,\n iterLength = iteratees.length,\n resIndex = 0,\n takeCount = nativeMin(length, this.__takeCount__);\n\n if (!isArr || (!isRight && arrLength == length && takeCount == length)) {\n return baseWrapperValue(array, this.__actions__);\n }\n var result = [];\n\n outer:\n while (length-- && resIndex < takeCount) {\n index += dir;\n\n var iterIndex = -1,\n value = array[index];\n\n while (++iterIndex < iterLength) {\n var data = iteratees[iterIndex],\n iteratee = data.iteratee,\n type = data.type,\n computed = iteratee(value);\n\n if (type == LAZY_MAP_FLAG) {\n value = computed;\n } else if (!computed) {\n if (type == LAZY_FILTER_FLAG) {\n continue outer;\n } else {\n break outer;\n }\n }\n }\n result[resIndex++] = value;\n }\n return result;\n }\n\n // Ensure `LazyWrapper` is an instance of `baseLodash`.\n LazyWrapper.prototype = baseCreate(baseLodash.prototype);\n LazyWrapper.prototype.constructor = LazyWrapper;\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates a hash object.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\n function Hash(entries) {\n var index = -1,\n length = entries == null ? 0 : entries.length;\n\n this.clear();\n while (++index < length) {\n var entry = entries[index];\n this.set(entry[0], entry[1]);\n }\n }\n\n /**\n * Removes all key-value entries from the hash.\n *\n * @private\n * @name clear\n * @memberOf Hash\n */\n function hashClear() {\n this.__data__ = nativeCreate ? nativeCreate(null) : {};\n this.size = 0;\n }\n\n /**\n * Removes `key` and its value from the hash.\n *\n * @private\n * @name delete\n * @memberOf Hash\n * @param {Object} hash The hash to modify.\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\n function hashDelete(key) {\n var result = this.has(key) && delete this.__data__[key];\n this.size -= result ? 1 : 0;\n return result;\n }\n\n /**\n * Gets the hash value for `key`.\n *\n * @private\n * @name get\n * @memberOf Hash\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\n function hashGet(key) {\n var data = this.__data__;\n if (nativeCreate) {\n var result = data[key];\n return result === HASH_UNDEFINED ? undefined : result;\n }\n return hasOwnProperty.call(data, key) ? data[key] : undefined;\n }\n\n /**\n * Checks if a hash value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf Hash\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\n function hashHas(key) {\n var data = this.__data__;\n return nativeCreate ? (data[key] !== undefined) : hasOwnProperty.call(data, key);\n }\n\n /**\n * Sets the hash `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf Hash\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the hash instance.\n */\n function hashSet(key, value) {\n var data = this.__data__;\n this.size += this.has(key) ? 0 : 1;\n data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value;\n return this;\n }\n\n // Add methods to `Hash`.\n Hash.prototype.clear = hashClear;\n Hash.prototype['delete'] = hashDelete;\n Hash.prototype.get = hashGet;\n Hash.prototype.has = hashHas;\n Hash.prototype.set = hashSet;\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates an list cache object.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\n function ListCache(entries) {\n var index = -1,\n length = entries == null ? 0 : entries.length;\n\n this.clear();\n while (++index < length) {\n var entry = entries[index];\n this.set(entry[0], entry[1]);\n }\n }\n\n /**\n * Removes all key-value entries from the list cache.\n *\n * @private\n * @name clear\n * @memberOf ListCache\n */\n function listCacheClear() {\n this.__data__ = [];\n this.size = 0;\n }\n\n /**\n * Removes `key` and its value from the list cache.\n *\n * @private\n * @name delete\n * @memberOf ListCache\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\n function listCacheDelete(key) {\n var data = this.__data__,\n index = assocIndexOf(data, key);\n\n if (index < 0) {\n return false;\n }\n var lastIndex = data.length - 1;\n if (index == lastIndex) {\n data.pop();\n } else {\n splice.call(data, index, 1);\n }\n --this.size;\n return true;\n }\n\n /**\n * Gets the list cache value for `key`.\n *\n * @private\n * @name get\n * @memberOf ListCache\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\n function listCacheGet(key) {\n var data = this.__data__,\n index = assocIndexOf(data, key);\n\n return index < 0 ? undefined : data[index][1];\n }\n\n /**\n * Checks if a list cache value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf ListCache\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\n function listCacheHas(key) {\n return assocIndexOf(this.__data__, key) > -1;\n }\n\n /**\n * Sets the list cache `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf ListCache\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the list cache instance.\n */\n function listCacheSet(key, value) {\n var data = this.__data__,\n index = assocIndexOf(data, key);\n\n if (index < 0) {\n ++this.size;\n data.push([key, value]);\n } else {\n data[index][1] = value;\n }\n return this;\n }\n\n // Add methods to `ListCache`.\n ListCache.prototype.clear = listCacheClear;\n ListCache.prototype['delete'] = listCacheDelete;\n ListCache.prototype.get = listCacheGet;\n ListCache.prototype.has = listCacheHas;\n ListCache.prototype.set = listCacheSet;\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates a map cache object to store key-value pairs.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\n function MapCache(entries) {\n var index = -1,\n length = entries == null ? 0 : entries.length;\n\n this.clear();\n while (++index < length) {\n var entry = entries[index];\n this.set(entry[0], entry[1]);\n }\n }\n\n /**\n * Removes all key-value entries from the map.\n *\n * @private\n * @name clear\n * @memberOf MapCache\n */\n function mapCacheClear() {\n this.size = 0;\n this.__data__ = {\n 'hash': new Hash,\n 'map': new (Map || ListCache),\n 'string': new Hash\n };\n }\n\n /**\n * Removes `key` and its value from the map.\n *\n * @private\n * @name delete\n * @memberOf MapCache\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\n function mapCacheDelete(key) {\n var result = getMapData(this, key)['delete'](key);\n this.size -= result ? 1 : 0;\n return result;\n }\n\n /**\n * Gets the map value for `key`.\n *\n * @private\n * @name get\n * @memberOf MapCache\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\n function mapCacheGet(key) {\n return getMapData(this, key).get(key);\n }\n\n /**\n * Checks if a map value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf MapCache\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\n function mapCacheHas(key) {\n return getMapData(this, key).has(key);\n }\n\n /**\n * Sets the map `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf MapCache\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the map cache instance.\n */\n function mapCacheSet(key, value) {\n var data = getMapData(this, key),\n size = data.size;\n\n data.set(key, value);\n this.size += data.size == size ? 0 : 1;\n return this;\n }\n\n // Add methods to `MapCache`.\n MapCache.prototype.clear = mapCacheClear;\n MapCache.prototype['delete'] = mapCacheDelete;\n MapCache.prototype.get = mapCacheGet;\n MapCache.prototype.has = mapCacheHas;\n MapCache.prototype.set = mapCacheSet;\n\n /*------------------------------------------------------------------------*/\n\n /**\n *\n * Creates an array cache object to store unique values.\n *\n * @private\n * @constructor\n * @param {Array} [values] The values to cache.\n */\n function SetCache(values) {\n var index = -1,\n length = values == null ? 0 : values.length;\n\n this.__data__ = new MapCache;\n while (++index < length) {\n this.add(values[index]);\n }\n }\n\n /**\n * Adds `value` to the array cache.\n *\n * @private\n * @name add\n * @memberOf SetCache\n * @alias push\n * @param {*} value The value to cache.\n * @returns {Object} Returns the cache instance.\n */\n function setCacheAdd(value) {\n this.__data__.set(value, HASH_UNDEFINED);\n return this;\n }\n\n /**\n * Checks if `value` is in the array cache.\n *\n * @private\n * @name has\n * @memberOf SetCache\n * @param {*} value The value to search for.\n * @returns {boolean} Returns `true` if `value` is found, else `false`.\n */\n function setCacheHas(value) {\n return this.__data__.has(value);\n }\n\n // Add methods to `SetCache`.\n SetCache.prototype.add = SetCache.prototype.push = setCacheAdd;\n SetCache.prototype.has = setCacheHas;\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates a stack cache object to store key-value pairs.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\n function Stack(entries) {\n var data = this.__data__ = new ListCache(entries);\n this.size = data.size;\n }\n\n /**\n * Removes all key-value entries from the stack.\n *\n * @private\n * @name clear\n * @memberOf Stack\n */\n function stackClear() {\n this.__data__ = new ListCache;\n this.size = 0;\n }\n\n /**\n * Removes `key` and its value from the stack.\n *\n * @private\n * @name delete\n * @memberOf Stack\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\n function stackDelete(key) {\n var data = this.__data__,\n result = data['delete'](key);\n\n this.size = data.size;\n return result;\n }\n\n /**\n * Gets the stack value for `key`.\n *\n * @private\n * @name get\n * @memberOf Stack\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\n function stackGet(key) {\n return this.__data__.get(key);\n }\n\n /**\n * Checks if a stack value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf Stack\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\n function stackHas(key) {\n return this.__data__.has(key);\n }\n\n /**\n * Sets the stack `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf Stack\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the stack cache instance.\n */\n function stackSet(key, value) {\n var data = this.__data__;\n if (data instanceof ListCache) {\n var pairs = data.__data__;\n if (!Map || (pairs.length < LARGE_ARRAY_SIZE - 1)) {\n pairs.push([key, value]);\n this.size = ++data.size;\n return this;\n }\n data = this.__data__ = new MapCache(pairs);\n }\n data.set(key, value);\n this.size = data.size;\n return this;\n }\n\n // Add methods to `Stack`.\n Stack.prototype.clear = stackClear;\n Stack.prototype['delete'] = stackDelete;\n Stack.prototype.get = stackGet;\n Stack.prototype.has = stackHas;\n Stack.prototype.set = stackSet;\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates an array of the enumerable property names of the array-like `value`.\n *\n * @private\n * @param {*} value The value to query.\n * @param {boolean} inherited Specify returning inherited property names.\n * @returns {Array} Returns the array of property names.\n */\n function arrayLikeKeys(value, inherited) {\n var isArr = isArray(value),\n isArg = !isArr && isArguments(value),\n isBuff = !isArr && !isArg && isBuffer(value),\n isType = !isArr && !isArg && !isBuff && isTypedArray(value),\n skipIndexes = isArr || isArg || isBuff || isType,\n result = skipIndexes ? baseTimes(value.length, String) : [],\n length = result.length;\n\n for (var key in value) {\n if ((inherited || hasOwnProperty.call(value, key)) &&\n !(skipIndexes && (\n // Safari 9 has enumerable `arguments.length` in strict mode.\n key == 'length' ||\n // Node.js 0.10 has enumerable non-index properties on buffers.\n (isBuff && (key == 'offset' || key == 'parent')) ||\n // PhantomJS 2 has enumerable non-index properties on typed arrays.\n (isType && (key == 'buffer' || key == 'byteLength' || key == 'byteOffset')) ||\n // Skip index properties.\n isIndex(key, length)\n ))) {\n result.push(key);\n }\n }\n return result;\n }\n\n /**\n * A specialized version of `_.sample` for arrays.\n *\n * @private\n * @param {Array} array The array to sample.\n * @returns {*} Returns the random element.\n */\n function arraySample(array) {\n var length = array.length;\n return length ? array[baseRandom(0, length - 1)] : undefined;\n }\n\n /**\n * A specialized version of `_.sampleSize` for arrays.\n *\n * @private\n * @param {Array} array The array to sample.\n * @param {number} n The number of elements to sample.\n * @returns {Array} Returns the random elements.\n */\n function arraySampleSize(array, n) {\n return shuffleSelf(copyArray(array), baseClamp(n, 0, array.length));\n }\n\n /**\n * A specialized version of `_.shuffle` for arrays.\n *\n * @private\n * @param {Array} array The array to shuffle.\n * @returns {Array} Returns the new shuffled array.\n */\n function arrayShuffle(array) {\n return shuffleSelf(copyArray(array));\n }\n\n /**\n * This function is like `assignValue` except that it doesn't assign\n * `undefined` values.\n *\n * @private\n * @param {Object} object The object to modify.\n * @param {string} key The key of the property to assign.\n * @param {*} value The value to assign.\n */\n function assignMergeValue(object, key, value) {\n if ((value !== undefined && !eq(object[key], value)) ||\n (value === undefined && !(key in object))) {\n baseAssignValue(object, key, value);\n }\n }\n\n /**\n * Assigns `value` to `key` of `object` if the existing value is not equivalent\n * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons.\n *\n * @private\n * @param {Object} object The object to modify.\n * @param {string} key The key of the property to assign.\n * @param {*} value The value to assign.\n */\n function assignValue(object, key, value) {\n var objValue = object[key];\n if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) ||\n (value === undefined && !(key in object))) {\n baseAssignValue(object, key, value);\n }\n }\n\n /**\n * Gets the index at which the `key` is found in `array` of key-value pairs.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {*} key The key to search for.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\n function assocIndexOf(array, key) {\n var length = array.length;\n while (length--) {\n if (eq(array[length][0], key)) {\n return length;\n }\n }\n return -1;\n }\n\n /**\n * Aggregates elements of `collection` on `accumulator` with keys transformed\n * by `iteratee` and values set by `setter`.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} setter The function to set `accumulator` values.\n * @param {Function} iteratee The iteratee to transform keys.\n * @param {Object} accumulator The initial aggregated object.\n * @returns {Function} Returns `accumulator`.\n */\n function baseAggregator(collection, setter, iteratee, accumulator) {\n baseEach(collection, function(value, key, collection) {\n setter(accumulator, value, iteratee(value), collection);\n });\n return accumulator;\n }\n\n /**\n * The base implementation of `_.assign` without support for multiple sources\n * or `customizer` functions.\n *\n * @private\n * @param {Object} object The destination object.\n * @param {Object} source The source object.\n * @returns {Object} Returns `object`.\n */\n function baseAssign(object, source) {\n return object && copyObject(source, keys(source), object);\n }\n\n /**\n * The base implementation of `_.assignIn` without support for multiple sources\n * or `customizer` functions.\n *\n * @private\n * @param {Object} object The destination object.\n * @param {Object} source The source object.\n * @returns {Object} Returns `object`.\n */\n function baseAssignIn(object, source) {\n return object && copyObject(source, keysIn(source), object);\n }\n\n /**\n * The base implementation of `assignValue` and `assignMergeValue` without\n * value checks.\n *\n * @private\n * @param {Object} object The object to modify.\n * @param {string} key The key of the property to assign.\n * @param {*} value The value to assign.\n */\n function baseAssignValue(object, key, value) {\n if (key == '__proto__' && defineProperty) {\n defineProperty(object, key, {\n 'configurable': true,\n 'enumerable': true,\n 'value': value,\n 'writable': true\n });\n } else {\n object[key] = value;\n }\n }\n\n /**\n * The base implementation of `_.at` without support for individual paths.\n *\n * @private\n * @param {Object} object The object to iterate over.\n * @param {string[]} paths The property paths to pick.\n * @returns {Array} Returns the picked elements.\n */\n function baseAt(object, paths) {\n var index = -1,\n length = paths.length,\n result = Array(length),\n skip = object == null;\n\n while (++index < length) {\n result[index] = skip ? undefined : get(object, paths[index]);\n }\n return result;\n }\n\n /**\n * The base implementation of `_.clamp` which doesn't coerce arguments.\n *\n * @private\n * @param {number} number The number to clamp.\n * @param {number} [lower] The lower bound.\n * @param {number} upper The upper bound.\n * @returns {number} Returns the clamped number.\n */\n function baseClamp(number, lower, upper) {\n if (number === number) {\n if (upper !== undefined) {\n number = number <= upper ? number : upper;\n }\n if (lower !== undefined) {\n number = number >= lower ? number : lower;\n }\n }\n return number;\n }\n\n /**\n * The base implementation of `_.clone` and `_.cloneDeep` which tracks\n * traversed objects.\n *\n * @private\n * @param {*} value The value to clone.\n * @param {boolean} bitmask The bitmask flags.\n * 1 - Deep clone\n * 2 - Flatten inherited properties\n * 4 - Clone symbols\n * @param {Function} [customizer] The function to customize cloning.\n * @param {string} [key] The key of `value`.\n * @param {Object} [object] The parent object of `value`.\n * @param {Object} [stack] Tracks traversed objects and their clone counterparts.\n * @returns {*} Returns the cloned value.\n */\n function baseClone(value, bitmask, customizer, key, object, stack) {\n var result,\n isDeep = bitmask & CLONE_DEEP_FLAG,\n isFlat = bitmask & CLONE_FLAT_FLAG,\n isFull = bitmask & CLONE_SYMBOLS_FLAG;\n\n if (customizer) {\n result = object ? customizer(value, key, object, stack) : customizer(value);\n }\n if (result !== undefined) {\n return result;\n }\n if (!isObject(value)) {\n return value;\n }\n var isArr = isArray(value);\n if (isArr) {\n result = initCloneArray(value);\n if (!isDeep) {\n return copyArray(value, result);\n }\n } else {\n var tag = getTag(value),\n isFunc = tag == funcTag || tag == genTag;\n\n if (isBuffer(value)) {\n return cloneBuffer(value, isDeep);\n }\n if (tag == objectTag || tag == argsTag || (isFunc && !object)) {\n result = (isFlat || isFunc) ? {} : initCloneObject(value);\n if (!isDeep) {\n return isFlat\n ? copySymbolsIn(value, baseAssignIn(result, value))\n : copySymbols(value, baseAssign(result, value));\n }\n } else {\n if (!cloneableTags[tag]) {\n return object ? value : {};\n }\n result = initCloneByTag(value, tag, isDeep);\n }\n }\n // Check for circular references and return its corresponding clone.\n stack || (stack = new Stack);\n var stacked = stack.get(value);\n if (stacked) {\n return stacked;\n }\n stack.set(value, result);\n\n if (isSet(value)) {\n value.forEach(function(subValue) {\n result.add(baseClone(subValue, bitmask, customizer, subValue, value, stack));\n });\n } else if (isMap(value)) {\n value.forEach(function(subValue, key) {\n result.set(key, baseClone(subValue, bitmask, customizer, key, value, stack));\n });\n }\n\n var keysFunc = isFull\n ? (isFlat ? getAllKeysIn : getAllKeys)\n : (isFlat ? keysIn : keys);\n\n var props = isArr ? undefined : keysFunc(value);\n arrayEach(props || value, function(subValue, key) {\n if (props) {\n key = subValue;\n subValue = value[key];\n }\n // Recursively populate clone (susceptible to call stack limits).\n assignValue(result, key, baseClone(subValue, bitmask, customizer, key, value, stack));\n });\n return result;\n }\n\n /**\n * The base implementation of `_.conforms` which doesn't clone `source`.\n *\n * @private\n * @param {Object} source The object of property predicates to conform to.\n * @returns {Function} Returns the new spec function.\n */\n function baseConforms(source) {\n var props = keys(source);\n return function(object) {\n return baseConformsTo(object, source, props);\n };\n }\n\n /**\n * The base implementation of `_.conformsTo` which accepts `props` to check.\n *\n * @private\n * @param {Object} object The object to inspect.\n * @param {Object} source The object of property predicates to conform to.\n * @returns {boolean} Returns `true` if `object` conforms, else `false`.\n */\n function baseConformsTo(object, source, props) {\n var length = props.length;\n if (object == null) {\n return !length;\n }\n object = Object(object);\n while (length--) {\n var key = props[length],\n predicate = source[key],\n value = object[key];\n\n if ((value === undefined && !(key in object)) || !predicate(value)) {\n return false;\n }\n }\n return true;\n }\n\n /**\n * The base implementation of `_.delay` and `_.defer` which accepts `args`\n * to provide to `func`.\n *\n * @private\n * @param {Function} func The function to delay.\n * @param {number} wait The number of milliseconds to delay invocation.\n * @param {Array} args The arguments to provide to `func`.\n * @returns {number|Object} Returns the timer id or timeout object.\n */\n function baseDelay(func, wait, args) {\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n return setTimeout(function() { func.apply(undefined, args); }, wait);\n }\n\n /**\n * The base implementation of methods like `_.difference` without support\n * for excluding multiple arrays or iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {Array} values The values to exclude.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n */\n function baseDifference(array, values, iteratee, comparator) {\n var index = -1,\n includes = arrayIncludes,\n isCommon = true,\n length = array.length,\n result = [],\n valuesLength = values.length;\n\n if (!length) {\n return result;\n }\n if (iteratee) {\n values = arrayMap(values, baseUnary(iteratee));\n }\n if (comparator) {\n includes = arrayIncludesWith;\n isCommon = false;\n }\n else if (values.length >= LARGE_ARRAY_SIZE) {\n includes = cacheHas;\n isCommon = false;\n values = new SetCache(values);\n }\n outer:\n while (++index < length) {\n var value = array[index],\n computed = iteratee == null ? value : iteratee(value);\n\n value = (comparator || value !== 0) ? value : 0;\n if (isCommon && computed === computed) {\n var valuesIndex = valuesLength;\n while (valuesIndex--) {\n if (values[valuesIndex] === computed) {\n continue outer;\n }\n }\n result.push(value);\n }\n else if (!includes(values, computed, comparator)) {\n result.push(value);\n }\n }\n return result;\n }\n\n /**\n * The base implementation of `_.forEach` without support for iteratee shorthands.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array|Object} Returns `collection`.\n */\n var baseEach = createBaseEach(baseForOwn);\n\n /**\n * The base implementation of `_.forEachRight` without support for iteratee shorthands.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array|Object} Returns `collection`.\n */\n var baseEachRight = createBaseEach(baseForOwnRight, true);\n\n /**\n * The base implementation of `_.every` without support for iteratee shorthands.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {boolean} Returns `true` if all elements pass the predicate check,\n * else `false`\n */\n function baseEvery(collection, predicate) {\n var result = true;\n baseEach(collection, function(value, index, collection) {\n result = !!predicate(value, index, collection);\n return result;\n });\n return result;\n }\n\n /**\n * The base implementation of methods like `_.max` and `_.min` which accepts a\n * `comparator` to determine the extremum value.\n *\n * @private\n * @param {Array} array The array to iterate over.\n * @param {Function} iteratee The iteratee invoked per iteration.\n * @param {Function} comparator The comparator used to compare values.\n * @returns {*} Returns the extremum value.\n */\n function baseExtremum(array, iteratee, comparator) {\n var index = -1,\n length = array.length;\n\n while (++index < length) {\n var value = array[index],\n current = iteratee(value);\n\n if (current != null && (computed === undefined\n ? (current === current && !isSymbol(current))\n : comparator(current, computed)\n )) {\n var computed = current,\n result = value;\n }\n }\n return result;\n }\n\n /**\n * The base implementation of `_.fill` without an iteratee call guard.\n *\n * @private\n * @param {Array} array The array to fill.\n * @param {*} value The value to fill `array` with.\n * @param {number} [start=0] The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns `array`.\n */\n function baseFill(array, value, start, end) {\n var length = array.length;\n\n start = toInteger(start);\n if (start < 0) {\n start = -start > length ? 0 : (length + start);\n }\n end = (end === undefined || end > length) ? length : toInteger(end);\n if (end < 0) {\n end += length;\n }\n end = start > end ? 0 : toLength(end);\n while (start < end) {\n array[start++] = value;\n }\n return array;\n }\n\n /**\n * The base implementation of `_.filter` without support for iteratee shorthands.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {Array} Returns the new filtered array.\n */\n function baseFilter(collection, predicate) {\n var result = [];\n baseEach(collection, function(value, index, collection) {\n if (predicate(value, index, collection)) {\n result.push(value);\n }\n });\n return result;\n }\n\n /**\n * The base implementation of `_.flatten` with support for restricting flattening.\n *\n * @private\n * @param {Array} array The array to flatten.\n * @param {number} depth The maximum recursion depth.\n * @param {boolean} [predicate=isFlattenable] The function invoked per iteration.\n * @param {boolean} [isStrict] Restrict to values that pass `predicate` checks.\n * @param {Array} [result=[]] The initial result value.\n * @returns {Array} Returns the new flattened array.\n */\n function baseFlatten(array, depth, predicate, isStrict, result) {\n var index = -1,\n length = array.length;\n\n predicate || (predicate = isFlattenable);\n result || (result = []);\n\n while (++index < length) {\n var value = array[index];\n if (depth > 0 && predicate(value)) {\n if (depth > 1) {\n // Recursively flatten arrays (susceptible to call stack limits).\n baseFlatten(value, depth - 1, predicate, isStrict, result);\n } else {\n arrayPush(result, value);\n }\n } else if (!isStrict) {\n result[result.length] = value;\n }\n }\n return result;\n }\n\n /**\n * The base implementation of `baseForOwn` which iterates over `object`\n * properties returned by `keysFunc` and invokes `iteratee` for each property.\n * Iteratee functions may exit iteration early by explicitly returning `false`.\n *\n * @private\n * @param {Object} object The object to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @param {Function} keysFunc The function to get the keys of `object`.\n * @returns {Object} Returns `object`.\n */\n var baseFor = createBaseFor();\n\n /**\n * This function is like `baseFor` except that it iterates over properties\n * in the opposite order.\n *\n * @private\n * @param {Object} object The object to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @param {Function} keysFunc The function to get the keys of `object`.\n * @returns {Object} Returns `object`.\n */\n var baseForRight = createBaseFor(true);\n\n /**\n * The base implementation of `_.forOwn` without support for iteratee shorthands.\n *\n * @private\n * @param {Object} object The object to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Object} Returns `object`.\n */\n function baseForOwn(object, iteratee) {\n return object && baseFor(object, iteratee, keys);\n }\n\n /**\n * The base implementation of `_.forOwnRight` without support for iteratee shorthands.\n *\n * @private\n * @param {Object} object The object to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Object} Returns `object`.\n */\n function baseForOwnRight(object, iteratee) {\n return object && baseForRight(object, iteratee, keys);\n }\n\n /**\n * The base implementation of `_.functions` which creates an array of\n * `object` function property names filtered from `props`.\n *\n * @private\n * @param {Object} object The object to inspect.\n * @param {Array} props The property names to filter.\n * @returns {Array} Returns the function names.\n */\n function baseFunctions(object, props) {\n return arrayFilter(props, function(key) {\n return isFunction(object[key]);\n });\n }\n\n /**\n * The base implementation of `_.get` without support for default values.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array|string} path The path of the property to get.\n * @returns {*} Returns the resolved value.\n */\n function baseGet(object, path) {\n path = castPath(path, object);\n\n var index = 0,\n length = path.length;\n\n while (object != null && index < length) {\n object = object[toKey(path[index++])];\n }\n return (index && index == length) ? object : undefined;\n }\n\n /**\n * The base implementation of `getAllKeys` and `getAllKeysIn` which uses\n * `keysFunc` and `symbolsFunc` to get the enumerable property names and\n * symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Function} keysFunc The function to get the keys of `object`.\n * @param {Function} symbolsFunc The function to get the symbols of `object`.\n * @returns {Array} Returns the array of property names and symbols.\n */\n function baseGetAllKeys(object, keysFunc, symbolsFunc) {\n var result = keysFunc(object);\n return isArray(object) ? result : arrayPush(result, symbolsFunc(object));\n }\n\n /**\n * The base implementation of `getTag` without fallbacks for buggy environments.\n *\n * @private\n * @param {*} value The value to query.\n * @returns {string} Returns the `toStringTag`.\n */\n function baseGetTag(value) {\n if (value == null) {\n return value === undefined ? undefinedTag : nullTag;\n }\n return (symToStringTag && symToStringTag in Object(value))\n ? getRawTag(value)\n : objectToString(value);\n }\n\n /**\n * The base implementation of `_.gt` which doesn't coerce arguments.\n *\n * @private\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if `value` is greater than `other`,\n * else `false`.\n */\n function baseGt(value, other) {\n return value > other;\n }\n\n /**\n * The base implementation of `_.has` without support for deep paths.\n *\n * @private\n * @param {Object} [object] The object to query.\n * @param {Array|string} key The key to check.\n * @returns {boolean} Returns `true` if `key` exists, else `false`.\n */\n function baseHas(object, key) {\n return object != null && hasOwnProperty.call(object, key);\n }\n\n /**\n * The base implementation of `_.hasIn` without support for deep paths.\n *\n * @private\n * @param {Object} [object] The object to query.\n * @param {Array|string} key The key to check.\n * @returns {boolean} Returns `true` if `key` exists, else `false`.\n */\n function baseHasIn(object, key) {\n return object != null && key in Object(object);\n }\n\n /**\n * The base implementation of `_.inRange` which doesn't coerce arguments.\n *\n * @private\n * @param {number} number The number to check.\n * @param {number} start The start of the range.\n * @param {number} end The end of the range.\n * @returns {boolean} Returns `true` if `number` is in the range, else `false`.\n */\n function baseInRange(number, start, end) {\n return number >= nativeMin(start, end) && number < nativeMax(start, end);\n }\n\n /**\n * The base implementation of methods like `_.intersection`, without support\n * for iteratee shorthands, that accepts an array of arrays to inspect.\n *\n * @private\n * @param {Array} arrays The arrays to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of shared values.\n */\n function baseIntersection(arrays, iteratee, comparator) {\n var includes = comparator ? arrayIncludesWith : arrayIncludes,\n length = arrays[0].length,\n othLength = arrays.length,\n othIndex = othLength,\n caches = Array(othLength),\n maxLength = Infinity,\n result = [];\n\n while (othIndex--) {\n var array = arrays[othIndex];\n if (othIndex && iteratee) {\n array = arrayMap(array, baseUnary(iteratee));\n }\n maxLength = nativeMin(array.length, maxLength);\n caches[othIndex] = !comparator && (iteratee || (length >= 120 && array.length >= 120))\n ? new SetCache(othIndex && array)\n : undefined;\n }\n array = arrays[0];\n\n var index = -1,\n seen = caches[0];\n\n outer:\n while (++index < length && result.length < maxLength) {\n var value = array[index],\n computed = iteratee ? iteratee(value) : value;\n\n value = (comparator || value !== 0) ? value : 0;\n if (!(seen\n ? cacheHas(seen, computed)\n : includes(result, computed, comparator)\n )) {\n othIndex = othLength;\n while (--othIndex) {\n var cache = caches[othIndex];\n if (!(cache\n ? cacheHas(cache, computed)\n : includes(arrays[othIndex], computed, comparator))\n ) {\n continue outer;\n }\n }\n if (seen) {\n seen.push(computed);\n }\n result.push(value);\n }\n }\n return result;\n }\n\n /**\n * The base implementation of `_.invert` and `_.invertBy` which inverts\n * `object` with values transformed by `iteratee` and set by `setter`.\n *\n * @private\n * @param {Object} object The object to iterate over.\n * @param {Function} setter The function to set `accumulator` values.\n * @param {Function} iteratee The iteratee to transform values.\n * @param {Object} accumulator The initial inverted object.\n * @returns {Function} Returns `accumulator`.\n */\n function baseInverter(object, setter, iteratee, accumulator) {\n baseForOwn(object, function(value, key, object) {\n setter(accumulator, iteratee(value), key, object);\n });\n return accumulator;\n }\n\n /**\n * The base implementation of `_.invoke` without support for individual\n * method arguments.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array|string} path The path of the method to invoke.\n * @param {Array} args The arguments to invoke the method with.\n * @returns {*} Returns the result of the invoked method.\n */\n function baseInvoke(object, path, args) {\n path = castPath(path, object);\n object = parent(object, path);\n var func = object == null ? object : object[toKey(last(path))];\n return func == null ? undefined : apply(func, object, args);\n }\n\n /**\n * The base implementation of `_.isArguments`.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an `arguments` object,\n */\n function baseIsArguments(value) {\n return isObjectLike(value) && baseGetTag(value) == argsTag;\n }\n\n /**\n * The base implementation of `_.isArrayBuffer` without Node.js optimizations.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.\n */\n function baseIsArrayBuffer(value) {\n return isObjectLike(value) && baseGetTag(value) == arrayBufferTag;\n }\n\n /**\n * The base implementation of `_.isDate` without Node.js optimizations.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a date object, else `false`.\n */\n function baseIsDate(value) {\n return isObjectLike(value) && baseGetTag(value) == dateTag;\n }\n\n /**\n * The base implementation of `_.isEqual` which supports partial comparisons\n * and tracks traversed objects.\n *\n * @private\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @param {boolean} bitmask The bitmask flags.\n * 1 - Unordered comparison\n * 2 - Partial comparison\n * @param {Function} [customizer] The function to customize comparisons.\n * @param {Object} [stack] Tracks traversed `value` and `other` objects.\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n */\n function baseIsEqual(value, other, bitmask, customizer, stack) {\n if (value === other) {\n return true;\n }\n if (value == null || other == null || (!isObjectLike(value) && !isObjectLike(other))) {\n return value !== value && other !== other;\n }\n return baseIsEqualDeep(value, other, bitmask, customizer, baseIsEqual, stack);\n }\n\n /**\n * A specialized version of `baseIsEqual` for arrays and objects which performs\n * deep comparisons and tracks traversed objects enabling objects with circular\n * references to be compared.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n * @param {Function} customizer The function to customize comparisons.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Object} [stack] Tracks traversed `object` and `other` objects.\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n */\n function baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) {\n var objIsArr = isArray(object),\n othIsArr = isArray(other),\n objTag = objIsArr ? arrayTag : getTag(object),\n othTag = othIsArr ? arrayTag : getTag(other);\n\n objTag = objTag == argsTag ? objectTag : objTag;\n othTag = othTag == argsTag ? objectTag : othTag;\n\n var objIsObj = objTag == objectTag,\n othIsObj = othTag == objectTag,\n isSameTag = objTag == othTag;\n\n if (isSameTag && isBuffer(object)) {\n if (!isBuffer(other)) {\n return false;\n }\n objIsArr = true;\n objIsObj = false;\n }\n if (isSameTag && !objIsObj) {\n stack || (stack = new Stack);\n return (objIsArr || isTypedArray(object))\n ? equalArrays(object, other, bitmask, customizer, equalFunc, stack)\n : equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack);\n }\n if (!(bitmask & COMPARE_PARTIAL_FLAG)) {\n var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),\n othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__');\n\n if (objIsWrapped || othIsWrapped) {\n var objUnwrapped = objIsWrapped ? object.value() : object,\n othUnwrapped = othIsWrapped ? other.value() : other;\n\n stack || (stack = new Stack);\n return equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack);\n }\n }\n if (!isSameTag) {\n return false;\n }\n stack || (stack = new Stack);\n return equalObjects(object, other, bitmask, customizer, equalFunc, stack);\n }\n\n /**\n * The base implementation of `_.isMap` without Node.js optimizations.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a map, else `false`.\n */\n function baseIsMap(value) {\n return isObjectLike(value) && getTag(value) == mapTag;\n }\n\n /**\n * The base implementation of `_.isMatch` without support for iteratee shorthands.\n *\n * @private\n * @param {Object} object The object to inspect.\n * @param {Object} source The object of property values to match.\n * @param {Array} matchData The property names, values, and compare flags to match.\n * @param {Function} [customizer] The function to customize comparisons.\n * @returns {boolean} Returns `true` if `object` is a match, else `false`.\n */\n function baseIsMatch(object, source, matchData, customizer) {\n var index = matchData.length,\n length = index,\n noCustomizer = !customizer;\n\n if (object == null) {\n return !length;\n }\n object = Object(object);\n while (index--) {\n var data = matchData[index];\n if ((noCustomizer && data[2])\n ? data[1] !== object[data[0]]\n : !(data[0] in object)\n ) {\n return false;\n }\n }\n while (++index < length) {\n data = matchData[index];\n var key = data[0],\n objValue = object[key],\n srcValue = data[1];\n\n if (noCustomizer && data[2]) {\n if (objValue === undefined && !(key in object)) {\n return false;\n }\n } else {\n var stack = new Stack;\n if (customizer) {\n var result = customizer(objValue, srcValue, key, object, source, stack);\n }\n if (!(result === undefined\n ? baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG, customizer, stack)\n : result\n )) {\n return false;\n }\n }\n }\n return true;\n }\n\n /**\n * The base implementation of `_.isNative` without bad shim checks.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a native function,\n * else `false`.\n */\n function baseIsNative(value) {\n if (!isObject(value) || isMasked(value)) {\n return false;\n }\n var pattern = isFunction(value) ? reIsNative : reIsHostCtor;\n return pattern.test(toSource(value));\n }\n\n /**\n * The base implementation of `_.isRegExp` without Node.js optimizations.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.\n */\n function baseIsRegExp(value) {\n return isObjectLike(value) && baseGetTag(value) == regexpTag;\n }\n\n /**\n * The base implementation of `_.isSet` without Node.js optimizations.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a set, else `false`.\n */\n function baseIsSet(value) {\n return isObjectLike(value) && getTag(value) == setTag;\n }\n\n /**\n * The base implementation of `_.isTypedArray` without Node.js optimizations.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.\n */\n function baseIsTypedArray(value) {\n return isObjectLike(value) &&\n isLength(value.length) && !!typedArrayTags[baseGetTag(value)];\n }\n\n /**\n * The base implementation of `_.iteratee`.\n *\n * @private\n * @param {*} [value=_.identity] The value to convert to an iteratee.\n * @returns {Function} Returns the iteratee.\n */\n function baseIteratee(value) {\n // Don't store the `typeof` result in a variable to avoid a JIT bug in Safari 9.\n // See https://bugs.webkit.org/show_bug.cgi?id=156034 for more details.\n if (typeof value == 'function') {\n return value;\n }\n if (value == null) {\n return identity;\n }\n if (typeof value == 'object') {\n return isArray(value)\n ? baseMatchesProperty(value[0], value[1])\n : baseMatches(value);\n }\n return property(value);\n }\n\n /**\n * The base implementation of `_.keys` which doesn't treat sparse arrays as dense.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n */\n function baseKeys(object) {\n if (!isPrototype(object)) {\n return nativeKeys(object);\n }\n var result = [];\n for (var key in Object(object)) {\n if (hasOwnProperty.call(object, key) && key != 'constructor') {\n result.push(key);\n }\n }\n return result;\n }\n\n /**\n * The base implementation of `_.keysIn` which doesn't treat sparse arrays as dense.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n */\n function baseKeysIn(object) {\n if (!isObject(object)) {\n return nativeKeysIn(object);\n }\n var isProto = isPrototype(object),\n result = [];\n\n for (var key in object) {\n if (!(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) {\n result.push(key);\n }\n }\n return result;\n }\n\n /**\n * The base implementation of `_.lt` which doesn't coerce arguments.\n *\n * @private\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if `value` is less than `other`,\n * else `false`.\n */\n function baseLt(value, other) {\n return value < other;\n }\n\n /**\n * The base implementation of `_.map` without support for iteratee shorthands.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns the new mapped array.\n */\n function baseMap(collection, iteratee) {\n var index = -1,\n result = isArrayLike(collection) ? Array(collection.length) : [];\n\n baseEach(collection, function(value, key, collection) {\n result[++index] = iteratee(value, key, collection);\n });\n return result;\n }\n\n /**\n * The base implementation of `_.matches` which doesn't clone `source`.\n *\n * @private\n * @param {Object} source The object of property values to match.\n * @returns {Function} Returns the new spec function.\n */\n function baseMatches(source) {\n var matchData = getMatchData(source);\n if (matchData.length == 1 && matchData[0][2]) {\n return matchesStrictComparable(matchData[0][0], matchData[0][1]);\n }\n return function(object) {\n return object === source || baseIsMatch(object, source, matchData);\n };\n }\n\n /**\n * The base implementation of `_.matchesProperty` which doesn't clone `srcValue`.\n *\n * @private\n * @param {string} path The path of the property to get.\n * @param {*} srcValue The value to match.\n * @returns {Function} Returns the new spec function.\n */\n function baseMatchesProperty(path, srcValue) {\n if (isKey(path) && isStrictComparable(srcValue)) {\n return matchesStrictComparable(toKey(path), srcValue);\n }\n return function(object) {\n var objValue = get(object, path);\n return (objValue === undefined && objValue === srcValue)\n ? hasIn(object, path)\n : baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG);\n };\n }\n\n /**\n * The base implementation of `_.merge` without support for multiple sources.\n *\n * @private\n * @param {Object} object The destination object.\n * @param {Object} source The source object.\n * @param {number} srcIndex The index of `source`.\n * @param {Function} [customizer] The function to customize merged values.\n * @param {Object} [stack] Tracks traversed source values and their merged\n * counterparts.\n */\n function baseMerge(object, source, srcIndex, customizer, stack) {\n if (object === source) {\n return;\n }\n baseFor(source, function(srcValue, key) {\n stack || (stack = new Stack);\n if (isObject(srcValue)) {\n baseMergeDeep(object, source, key, srcIndex, baseMerge, customizer, stack);\n }\n else {\n var newValue = customizer\n ? customizer(safeGet(object, key), srcValue, (key + ''), object, source, stack)\n : undefined;\n\n if (newValue === undefined) {\n newValue = srcValue;\n }\n assignMergeValue(object, key, newValue);\n }\n }, keysIn);\n }\n\n /**\n * A specialized version of `baseMerge` for arrays and objects which performs\n * deep merges and tracks traversed objects enabling objects with circular\n * references to be merged.\n *\n * @private\n * @param {Object} object The destination object.\n * @param {Object} source The source object.\n * @param {string} key The key of the value to merge.\n * @param {number} srcIndex The index of `source`.\n * @param {Function} mergeFunc The function to merge values.\n * @param {Function} [customizer] The function to customize assigned values.\n * @param {Object} [stack] Tracks traversed source values and their merged\n * counterparts.\n */\n function baseMergeDeep(object, source, key, srcIndex, mergeFunc, customizer, stack) {\n var objValue = safeGet(object, key),\n srcValue = safeGet(source, key),\n stacked = stack.get(srcValue);\n\n if (stacked) {\n assignMergeValue(object, key, stacked);\n return;\n }\n var newValue = customizer\n ? customizer(objValue, srcValue, (key + ''), object, source, stack)\n : undefined;\n\n var isCommon = newValue === undefined;\n\n if (isCommon) {\n var isArr = isArray(srcValue),\n isBuff = !isArr && isBuffer(srcValue),\n isTyped = !isArr && !isBuff && isTypedArray(srcValue);\n\n newValue = srcValue;\n if (isArr || isBuff || isTyped) {\n if (isArray(objValue)) {\n newValue = objValue;\n }\n else if (isArrayLikeObject(objValue)) {\n newValue = copyArray(objValue);\n }\n else if (isBuff) {\n isCommon = false;\n newValue = cloneBuffer(srcValue, true);\n }\n else if (isTyped) {\n isCommon = false;\n newValue = cloneTypedArray(srcValue, true);\n }\n else {\n newValue = [];\n }\n }\n else if (isPlainObject(srcValue) || isArguments(srcValue)) {\n newValue = objValue;\n if (isArguments(objValue)) {\n newValue = toPlainObject(objValue);\n }\n else if (!isObject(objValue) || isFunction(objValue)) {\n newValue = initCloneObject(srcValue);\n }\n }\n else {\n isCommon = false;\n }\n }\n if (isCommon) {\n // Recursively merge objects and arrays (susceptible to call stack limits).\n stack.set(srcValue, newValue);\n mergeFunc(newValue, srcValue, srcIndex, customizer, stack);\n stack['delete'](srcValue);\n }\n assignMergeValue(object, key, newValue);\n }\n\n /**\n * The base implementation of `_.nth` which doesn't coerce arguments.\n *\n * @private\n * @param {Array} array The array to query.\n * @param {number} n The index of the element to return.\n * @returns {*} Returns the nth element of `array`.\n */\n function baseNth(array, n) {\n var length = array.length;\n if (!length) {\n return;\n }\n n += n < 0 ? length : 0;\n return isIndex(n, length) ? array[n] : undefined;\n }\n\n /**\n * The base implementation of `_.orderBy` without param guards.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function[]|Object[]|string[]} iteratees The iteratees to sort by.\n * @param {string[]} orders The sort orders of `iteratees`.\n * @returns {Array} Returns the new sorted array.\n */\n function baseOrderBy(collection, iteratees, orders) {\n if (iteratees.length) {\n iteratees = arrayMap(iteratees, function(iteratee) {\n if (isArray(iteratee)) {\n return function(value) {\n return baseGet(value, iteratee.length === 1 ? iteratee[0] : iteratee);\n };\n }\n return iteratee;\n });\n } else {\n iteratees = [identity];\n }\n\n var index = -1;\n iteratees = arrayMap(iteratees, baseUnary(getIteratee()));\n\n var result = baseMap(collection, function(value, key, collection) {\n var criteria = arrayMap(iteratees, function(iteratee) {\n return iteratee(value);\n });\n return { 'criteria': criteria, 'index': ++index, 'value': value };\n });\n\n return baseSortBy(result, function(object, other) {\n return compareMultiple(object, other, orders);\n });\n }\n\n /**\n * The base implementation of `_.pick` without support for individual\n * property identifiers.\n *\n * @private\n * @param {Object} object The source object.\n * @param {string[]} paths The property paths to pick.\n * @returns {Object} Returns the new object.\n */\n function basePick(object, paths) {\n return basePickBy(object, paths, function(value, path) {\n return hasIn(object, path);\n });\n }\n\n /**\n * The base implementation of `_.pickBy` without support for iteratee shorthands.\n *\n * @private\n * @param {Object} object The source object.\n * @param {string[]} paths The property paths to pick.\n * @param {Function} predicate The function invoked per property.\n * @returns {Object} Returns the new object.\n */\n function basePickBy(object, paths, predicate) {\n var index = -1,\n length = paths.length,\n result = {};\n\n while (++index < length) {\n var path = paths[index],\n value = baseGet(object, path);\n\n if (predicate(value, path)) {\n baseSet(result, castPath(path, object), value);\n }\n }\n return result;\n }\n\n /**\n * A specialized version of `baseProperty` which supports deep paths.\n *\n * @private\n * @param {Array|string} path The path of the property to get.\n * @returns {Function} Returns the new accessor function.\n */\n function basePropertyDeep(path) {\n return function(object) {\n return baseGet(object, path);\n };\n }\n\n /**\n * The base implementation of `_.pullAllBy` without support for iteratee\n * shorthands.\n *\n * @private\n * @param {Array} array The array to modify.\n * @param {Array} values The values to remove.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns `array`.\n */\n function basePullAll(array, values, iteratee, comparator) {\n var indexOf = comparator ? baseIndexOfWith : baseIndexOf,\n index = -1,\n length = values.length,\n seen = array;\n\n if (array === values) {\n values = copyArray(values);\n }\n if (iteratee) {\n seen = arrayMap(array, baseUnary(iteratee));\n }\n while (++index < length) {\n var fromIndex = 0,\n value = values[index],\n computed = iteratee ? iteratee(value) : value;\n\n while ((fromIndex = indexOf(seen, computed, fromIndex, comparator)) > -1) {\n if (seen !== array) {\n splice.call(seen, fromIndex, 1);\n }\n splice.call(array, fromIndex, 1);\n }\n }\n return array;\n }\n\n /**\n * The base implementation of `_.pullAt` without support for individual\n * indexes or capturing the removed elements.\n *\n * @private\n * @param {Array} array The array to modify.\n * @param {number[]} indexes The indexes of elements to remove.\n * @returns {Array} Returns `array`.\n */\n function basePullAt(array, indexes) {\n var length = array ? indexes.length : 0,\n lastIndex = length - 1;\n\n while (length--) {\n var index = indexes[length];\n if (length == lastIndex || index !== previous) {\n var previous = index;\n if (isIndex(index)) {\n splice.call(array, index, 1);\n } else {\n baseUnset(array, index);\n }\n }\n }\n return array;\n }\n\n /**\n * The base implementation of `_.random` without support for returning\n * floating-point numbers.\n *\n * @private\n * @param {number} lower The lower bound.\n * @param {number} upper The upper bound.\n * @returns {number} Returns the random number.\n */\n function baseRandom(lower, upper) {\n return lower + nativeFloor(nativeRandom() * (upper - lower + 1));\n }\n\n /**\n * The base implementation of `_.range` and `_.rangeRight` which doesn't\n * coerce arguments.\n *\n * @private\n * @param {number} start The start of the range.\n * @param {number} end The end of the range.\n * @param {number} step The value to increment or decrement by.\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {Array} Returns the range of numbers.\n */\n function baseRange(start, end, step, fromRight) {\n var index = -1,\n length = nativeMax(nativeCeil((end - start) / (step || 1)), 0),\n result = Array(length);\n\n while (length--) {\n result[fromRight ? length : ++index] = start;\n start += step;\n }\n return result;\n }\n\n /**\n * The base implementation of `_.repeat` which doesn't coerce arguments.\n *\n * @private\n * @param {string} string The string to repeat.\n * @param {number} n The number of times to repeat the string.\n * @returns {string} Returns the repeated string.\n */\n function baseRepeat(string, n) {\n var result = '';\n if (!string || n < 1 || n > MAX_SAFE_INTEGER) {\n return result;\n }\n // Leverage the exponentiation by squaring algorithm for a faster repeat.\n // See https://en.wikipedia.org/wiki/Exponentiation_by_squaring for more details.\n do {\n if (n % 2) {\n result += string;\n }\n n = nativeFloor(n / 2);\n if (n) {\n string += string;\n }\n } while (n);\n\n return result;\n }\n\n /**\n * The base implementation of `_.rest` which doesn't validate or coerce arguments.\n *\n * @private\n * @param {Function} func The function to apply a rest parameter to.\n * @param {number} [start=func.length-1] The start position of the rest parameter.\n * @returns {Function} Returns the new function.\n */\n function baseRest(func, start) {\n return setToString(overRest(func, start, identity), func + '');\n }\n\n /**\n * The base implementation of `_.sample`.\n *\n * @private\n * @param {Array|Object} collection The collection to sample.\n * @returns {*} Returns the random element.\n */\n function baseSample(collection) {\n return arraySample(values(collection));\n }\n\n /**\n * The base implementation of `_.sampleSize` without param guards.\n *\n * @private\n * @param {Array|Object} collection The collection to sample.\n * @param {number} n The number of elements to sample.\n * @returns {Array} Returns the random elements.\n */\n function baseSampleSize(collection, n) {\n var array = values(collection);\n return shuffleSelf(array, baseClamp(n, 0, array.length));\n }\n\n /**\n * The base implementation of `_.set`.\n *\n * @private\n * @param {Object} object The object to modify.\n * @param {Array|string} path The path of the property to set.\n * @param {*} value The value to set.\n * @param {Function} [customizer] The function to customize path creation.\n * @returns {Object} Returns `object`.\n */\n function baseSet(object, path, value, customizer) {\n if (!isObject(object)) {\n return object;\n }\n path = castPath(path, object);\n\n var index = -1,\n length = path.length,\n lastIndex = length - 1,\n nested = object;\n\n while (nested != null && ++index < length) {\n var key = toKey(path[index]),\n newValue = value;\n\n if (key === '__proto__' || key === 'constructor' || key === 'prototype') {\n return object;\n }\n\n if (index != lastIndex) {\n var objValue = nested[key];\n newValue = customizer ? customizer(objValue, key, nested) : undefined;\n if (newValue === undefined) {\n newValue = isObject(objValue)\n ? objValue\n : (isIndex(path[index + 1]) ? [] : {});\n }\n }\n assignValue(nested, key, newValue);\n nested = nested[key];\n }\n return object;\n }\n\n /**\n * The base implementation of `setData` without support for hot loop shorting.\n *\n * @private\n * @param {Function} func The function to associate metadata with.\n * @param {*} data The metadata.\n * @returns {Function} Returns `func`.\n */\n var baseSetData = !metaMap ? identity : function(func, data) {\n metaMap.set(func, data);\n return func;\n };\n\n /**\n * The base implementation of `setToString` without support for hot loop shorting.\n *\n * @private\n * @param {Function} func The function to modify.\n * @param {Function} string The `toString` result.\n * @returns {Function} Returns `func`.\n */\n var baseSetToString = !defineProperty ? identity : function(func, string) {\n return defineProperty(func, 'toString', {\n 'configurable': true,\n 'enumerable': false,\n 'value': constant(string),\n 'writable': true\n });\n };\n\n /**\n * The base implementation of `_.shuffle`.\n *\n * @private\n * @param {Array|Object} collection The collection to shuffle.\n * @returns {Array} Returns the new shuffled array.\n */\n function baseShuffle(collection) {\n return shuffleSelf(values(collection));\n }\n\n /**\n * The base implementation of `_.slice` without an iteratee call guard.\n *\n * @private\n * @param {Array} array The array to slice.\n * @param {number} [start=0] The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns the slice of `array`.\n */\n function baseSlice(array, start, end) {\n var index = -1,\n length = array.length;\n\n if (start < 0) {\n start = -start > length ? 0 : (length + start);\n }\n end = end > length ? length : end;\n if (end < 0) {\n end += length;\n }\n length = start > end ? 0 : ((end - start) >>> 0);\n start >>>= 0;\n\n var result = Array(length);\n while (++index < length) {\n result[index] = array[index + start];\n }\n return result;\n }\n\n /**\n * The base implementation of `_.some` without support for iteratee shorthands.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {boolean} Returns `true` if any element passes the predicate check,\n * else `false`.\n */\n function baseSome(collection, predicate) {\n var result;\n\n baseEach(collection, function(value, index, collection) {\n result = predicate(value, index, collection);\n return !result;\n });\n return !!result;\n }\n\n /**\n * The base implementation of `_.sortedIndex` and `_.sortedLastIndex` which\n * performs a binary search of `array` to determine the index at which `value`\n * should be inserted into `array` in order to maintain its sort order.\n *\n * @private\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @param {boolean} [retHighest] Specify returning the highest qualified index.\n * @returns {number} Returns the index at which `value` should be inserted\n * into `array`.\n */\n function baseSortedIndex(array, value, retHighest) {\n var low = 0,\n high = array == null ? low : array.length;\n\n if (typeof value == 'number' && value === value && high <= HALF_MAX_ARRAY_LENGTH) {\n while (low < high) {\n var mid = (low + high) >>> 1,\n computed = array[mid];\n\n if (computed !== null && !isSymbol(computed) &&\n (retHighest ? (computed <= value) : (computed < value))) {\n low = mid + 1;\n } else {\n high = mid;\n }\n }\n return high;\n }\n return baseSortedIndexBy(array, value, identity, retHighest);\n }\n\n /**\n * The base implementation of `_.sortedIndexBy` and `_.sortedLastIndexBy`\n * which invokes `iteratee` for `value` and each element of `array` to compute\n * their sort ranking. The iteratee is invoked with one argument; (value).\n *\n * @private\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @param {Function} iteratee The iteratee invoked per element.\n * @param {boolean} [retHighest] Specify returning the highest qualified index.\n * @returns {number} Returns the index at which `value` should be inserted\n * into `array`.\n */\n function baseSortedIndexBy(array, value, iteratee, retHighest) {\n var low = 0,\n high = array == null ? 0 : array.length;\n if (high === 0) {\n return 0;\n }\n\n value = iteratee(value);\n var valIsNaN = value !== value,\n valIsNull = value === null,\n valIsSymbol = isSymbol(value),\n valIsUndefined = value === undefined;\n\n while (low < high) {\n var mid = nativeFloor((low + high) / 2),\n computed = iteratee(array[mid]),\n othIsDefined = computed !== undefined,\n othIsNull = computed === null,\n othIsReflexive = computed === computed,\n othIsSymbol = isSymbol(computed);\n\n if (valIsNaN) {\n var setLow = retHighest || othIsReflexive;\n } else if (valIsUndefined) {\n setLow = othIsReflexive && (retHighest || othIsDefined);\n } else if (valIsNull) {\n setLow = othIsReflexive && othIsDefined && (retHighest || !othIsNull);\n } else if (valIsSymbol) {\n setLow = othIsReflexive && othIsDefined && !othIsNull && (retHighest || !othIsSymbol);\n } else if (othIsNull || othIsSymbol) {\n setLow = false;\n } else {\n setLow = retHighest ? (computed <= value) : (computed < value);\n }\n if (setLow) {\n low = mid + 1;\n } else {\n high = mid;\n }\n }\n return nativeMin(high, MAX_ARRAY_INDEX);\n }\n\n /**\n * The base implementation of `_.sortedUniq` and `_.sortedUniqBy` without\n * support for iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n */\n function baseSortedUniq(array, iteratee) {\n var index = -1,\n length = array.length,\n resIndex = 0,\n result = [];\n\n while (++index < length) {\n var value = array[index],\n computed = iteratee ? iteratee(value) : value;\n\n if (!index || !eq(computed, seen)) {\n var seen = computed;\n result[resIndex++] = value === 0 ? 0 : value;\n }\n }\n return result;\n }\n\n /**\n * The base implementation of `_.toNumber` which doesn't ensure correct\n * conversions of binary, hexadecimal, or octal string values.\n *\n * @private\n * @param {*} value The value to process.\n * @returns {number} Returns the number.\n */\n function baseToNumber(value) {\n if (typeof value == 'number') {\n return value;\n }\n if (isSymbol(value)) {\n return NAN;\n }\n return +value;\n }\n\n /**\n * The base implementation of `_.toString` which doesn't convert nullish\n * values to empty strings.\n *\n * @private\n * @param {*} value The value to process.\n * @returns {string} Returns the string.\n */\n function baseToString(value) {\n // Exit early for strings to avoid a performance hit in some environments.\n if (typeof value == 'string') {\n return value;\n }\n if (isArray(value)) {\n // Recursively convert values (susceptible to call stack limits).\n return arrayMap(value, baseToString) + '';\n }\n if (isSymbol(value)) {\n return symbolToString ? symbolToString.call(value) : '';\n }\n var result = (value + '');\n return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;\n }\n\n /**\n * The base implementation of `_.uniqBy` without support for iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n */\n function baseUniq(array, iteratee, comparator) {\n var index = -1,\n includes = arrayIncludes,\n length = array.length,\n isCommon = true,\n result = [],\n seen = result;\n\n if (comparator) {\n isCommon = false;\n includes = arrayIncludesWith;\n }\n else if (length >= LARGE_ARRAY_SIZE) {\n var set = iteratee ? null : createSet(array);\n if (set) {\n return setToArray(set);\n }\n isCommon = false;\n includes = cacheHas;\n seen = new SetCache;\n }\n else {\n seen = iteratee ? [] : result;\n }\n outer:\n while (++index < length) {\n var value = array[index],\n computed = iteratee ? iteratee(value) : value;\n\n value = (comparator || value !== 0) ? value : 0;\n if (isCommon && computed === computed) {\n var seenIndex = seen.length;\n while (seenIndex--) {\n if (seen[seenIndex] === computed) {\n continue outer;\n }\n }\n if (iteratee) {\n seen.push(computed);\n }\n result.push(value);\n }\n else if (!includes(seen, computed, comparator)) {\n if (seen !== result) {\n seen.push(computed);\n }\n result.push(value);\n }\n }\n return result;\n }\n\n /**\n * The base implementation of `_.unset`.\n *\n * @private\n * @param {Object} object The object to modify.\n * @param {Array|string} path The property path to unset.\n * @returns {boolean} Returns `true` if the property is deleted, else `false`.\n */\n function baseUnset(object, path) {\n path = castPath(path, object);\n\n // Prevent prototype pollution:\n // https://github.com/lodash/lodash/security/advisories/GHSA-xxjr-mmjv-4gpg\n // https://github.com/lodash/lodash/security/advisories/GHSA-f23m-r3pf-42rh\n var index = -1,\n length = path.length;\n\n if (!length) {\n return true;\n }\n\n while (++index < length) {\n var key = toKey(path[index]);\n\n // Always block \"__proto__\" anywhere in the path if it's not expected\n if (key === '__proto__' && !hasOwnProperty.call(object, '__proto__')) {\n return false;\n }\n\n // Block constructor/prototype as non-terminal traversal keys to prevent\n // escaping the object graph into built-in constructors and prototypes.\n if ((key === 'constructor' || key === 'prototype') && index < length - 1) {\n return false;\n }\n }\n\n var obj = parent(object, path);\n return obj == null || delete obj[toKey(last(path))];\n }\n\n /**\n * The base implementation of `_.update`.\n *\n * @private\n * @param {Object} object The object to modify.\n * @param {Array|string} path The path of the property to update.\n * @param {Function} updater The function to produce the updated value.\n * @param {Function} [customizer] The function to customize path creation.\n * @returns {Object} Returns `object`.\n */\n function baseUpdate(object, path, updater, customizer) {\n return baseSet(object, path, updater(baseGet(object, path)), customizer);\n }\n\n /**\n * The base implementation of methods like `_.dropWhile` and `_.takeWhile`\n * without support for iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to query.\n * @param {Function} predicate The function invoked per iteration.\n * @param {boolean} [isDrop] Specify dropping elements instead of taking them.\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {Array} Returns the slice of `array`.\n */\n function baseWhile(array, predicate, isDrop, fromRight) {\n var length = array.length,\n index = fromRight ? length : -1;\n\n while ((fromRight ? index-- : ++index < length) &&\n predicate(array[index], index, array)) {}\n\n return isDrop\n ? baseSlice(array, (fromRight ? 0 : index), (fromRight ? index + 1 : length))\n : baseSlice(array, (fromRight ? index + 1 : 0), (fromRight ? length : index));\n }\n\n /**\n * The base implementation of `wrapperValue` which returns the result of\n * performing a sequence of actions on the unwrapped `value`, where each\n * successive action is supplied the return value of the previous.\n *\n * @private\n * @param {*} value The unwrapped value.\n * @param {Array} actions Actions to perform to resolve the unwrapped value.\n * @returns {*} Returns the resolved value.\n */\n function baseWrapperValue(value, actions) {\n var result = value;\n if (result instanceof LazyWrapper) {\n result = result.value();\n }\n return arrayReduce(actions, function(result, action) {\n return action.func.apply(action.thisArg, arrayPush([result], action.args));\n }, result);\n }\n\n /**\n * The base implementation of methods like `_.xor`, without support for\n * iteratee shorthands, that accepts an array of arrays to inspect.\n *\n * @private\n * @param {Array} arrays The arrays to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of values.\n */\n function baseXor(arrays, iteratee, comparator) {\n var length = arrays.length;\n if (length < 2) {\n return length ? baseUniq(arrays[0]) : [];\n }\n var index = -1,\n result = Array(length);\n\n while (++index < length) {\n var array = arrays[index],\n othIndex = -1;\n\n while (++othIndex < length) {\n if (othIndex != index) {\n result[index] = baseDifference(result[index] || array, arrays[othIndex], iteratee, comparator);\n }\n }\n }\n return baseUniq(baseFlatten(result, 1), iteratee, comparator);\n }\n\n /**\n * This base implementation of `_.zipObject` which assigns values using `assignFunc`.\n *\n * @private\n * @param {Array} props The property identifiers.\n * @param {Array} values The property values.\n * @param {Function} assignFunc The function to assign values.\n * @returns {Object} Returns the new object.\n */\n function baseZipObject(props, values, assignFunc) {\n var index = -1,\n length = props.length,\n valsLength = values.length,\n result = {};\n\n while (++index < length) {\n var value = index < valsLength ? values[index] : undefined;\n assignFunc(result, props[index], value);\n }\n return result;\n }\n\n /**\n * Casts `value` to an empty array if it's not an array like object.\n *\n * @private\n * @param {*} value The value to inspect.\n * @returns {Array|Object} Returns the cast array-like object.\n */\n function castArrayLikeObject(value) {\n return isArrayLikeObject(value) ? value : [];\n }\n\n /**\n * Casts `value` to `identity` if it's not a function.\n *\n * @private\n * @param {*} value The value to inspect.\n * @returns {Function} Returns cast function.\n */\n function castFunction(value) {\n return typeof value == 'function' ? value : identity;\n }\n\n /**\n * Casts `value` to a path array if it's not one.\n *\n * @private\n * @param {*} value The value to inspect.\n * @param {Object} [object] The object to query keys on.\n * @returns {Array} Returns the cast property path array.\n */\n function castPath(value, object) {\n if (isArray(value)) {\n return value;\n }\n return isKey(value, object) ? [value] : stringToPath(toString(value));\n }\n\n /**\n * A `baseRest` alias which can be replaced with `identity` by module\n * replacement plugins.\n *\n * @private\n * @type {Function}\n * @param {Function} func The function to apply a rest parameter to.\n * @returns {Function} Returns the new function.\n */\n var castRest = baseRest;\n\n /**\n * Casts `array` to a slice if it's needed.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {number} start The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns the cast slice.\n */\n function castSlice(array, start, end) {\n var length = array.length;\n end = end === undefined ? length : end;\n return (!start && end >= length) ? array : baseSlice(array, start, end);\n }\n\n /**\n * A simple wrapper around the global [`clearTimeout`](https://mdn.io/clearTimeout).\n *\n * @private\n * @param {number|Object} id The timer id or timeout object of the timer to clear.\n */\n var clearTimeout = ctxClearTimeout || function(id) {\n return root.clearTimeout(id);\n };\n\n /**\n * Creates a clone of `buffer`.\n *\n * @private\n * @param {Buffer} buffer The buffer to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Buffer} Returns the cloned buffer.\n */\n function cloneBuffer(buffer, isDeep) {\n if (isDeep) {\n return buffer.slice();\n }\n var length = buffer.length,\n result = allocUnsafe ? allocUnsafe(length) : new buffer.constructor(length);\n\n buffer.copy(result);\n return result;\n }\n\n /**\n * Creates a clone of `arrayBuffer`.\n *\n * @private\n * @param {ArrayBuffer} arrayBuffer The array buffer to clone.\n * @returns {ArrayBuffer} Returns the cloned array buffer.\n */\n function cloneArrayBuffer(arrayBuffer) {\n var result = new arrayBuffer.constructor(arrayBuffer.byteLength);\n new Uint8Array(result).set(new Uint8Array(arrayBuffer));\n return result;\n }\n\n /**\n * Creates a clone of `dataView`.\n *\n * @private\n * @param {Object} dataView The data view to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Object} Returns the cloned data view.\n */\n function cloneDataView(dataView, isDeep) {\n var buffer = isDeep ? cloneArrayBuffer(dataView.buffer) : dataView.buffer;\n return new dataView.constructor(buffer, dataView.byteOffset, dataView.byteLength);\n }\n\n /**\n * Creates a clone of `regexp`.\n *\n * @private\n * @param {Object} regexp The regexp to clone.\n * @returns {Object} Returns the cloned regexp.\n */\n function cloneRegExp(regexp) {\n var result = new regexp.constructor(regexp.source, reFlags.exec(regexp));\n result.lastIndex = regexp.lastIndex;\n return result;\n }\n\n /**\n * Creates a clone of the `symbol` object.\n *\n * @private\n * @param {Object} symbol The symbol object to clone.\n * @returns {Object} Returns the cloned symbol object.\n */\n function cloneSymbol(symbol) {\n return symbolValueOf ? Object(symbolValueOf.call(symbol)) : {};\n }\n\n /**\n * Creates a clone of `typedArray`.\n *\n * @private\n * @param {Object} typedArray The typed array to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Object} Returns the cloned typed array.\n */\n function cloneTypedArray(typedArray, isDeep) {\n var buffer = isDeep ? cloneArrayBuffer(typedArray.buffer) : typedArray.buffer;\n return new typedArray.constructor(buffer, typedArray.byteOffset, typedArray.length);\n }\n\n /**\n * Compares values to sort them in ascending order.\n *\n * @private\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {number} Returns the sort order indicator for `value`.\n */\n function compareAscending(value, other) {\n if (value !== other) {\n var valIsDefined = value !== undefined,\n valIsNull = value === null,\n valIsReflexive = value === value,\n valIsSymbol = isSymbol(value);\n\n var othIsDefined = other !== undefined,\n othIsNull = other === null,\n othIsReflexive = other === other,\n othIsSymbol = isSymbol(other);\n\n if ((!othIsNull && !othIsSymbol && !valIsSymbol && value > other) ||\n (valIsSymbol && othIsDefined && othIsReflexive && !othIsNull && !othIsSymbol) ||\n (valIsNull && othIsDefined && othIsReflexive) ||\n (!valIsDefined && othIsReflexive) ||\n !valIsReflexive) {\n return 1;\n }\n if ((!valIsNull && !valIsSymbol && !othIsSymbol && value < other) ||\n (othIsSymbol && valIsDefined && valIsReflexive && !valIsNull && !valIsSymbol) ||\n (othIsNull && valIsDefined && valIsReflexive) ||\n (!othIsDefined && valIsReflexive) ||\n !othIsReflexive) {\n return -1;\n }\n }\n return 0;\n }\n\n /**\n * Used by `_.orderBy` to compare multiple properties of a value to another\n * and stable sort them.\n *\n * If `orders` is unspecified, all values are sorted in ascending order. Otherwise,\n * specify an order of \"desc\" for descending or \"asc\" for ascending sort order\n * of corresponding values.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {boolean[]|string[]} orders The order to sort by for each property.\n * @returns {number} Returns the sort order indicator for `object`.\n */\n function compareMultiple(object, other, orders) {\n var index = -1,\n objCriteria = object.criteria,\n othCriteria = other.criteria,\n length = objCriteria.length,\n ordersLength = orders.length;\n\n while (++index < length) {\n var result = compareAscending(objCriteria[index], othCriteria[index]);\n if (result) {\n if (index >= ordersLength) {\n return result;\n }\n var order = orders[index];\n return result * (order == 'desc' ? -1 : 1);\n }\n }\n // Fixes an `Array#sort` bug in the JS engine embedded in Adobe applications\n // that causes it, under certain circumstances, to provide the same value for\n // `object` and `other`. See https://github.com/jashkenas/underscore/pull/1247\n // for more details.\n //\n // This also ensures a stable sort in V8 and other engines.\n // See https://bugs.chromium.org/p/v8/issues/detail?id=90 for more details.\n return object.index - other.index;\n }\n\n /**\n * Creates an array that is the composition of partially applied arguments,\n * placeholders, and provided arguments into a single array of arguments.\n *\n * @private\n * @param {Array} args The provided arguments.\n * @param {Array} partials The arguments to prepend to those provided.\n * @param {Array} holders The `partials` placeholder indexes.\n * @params {boolean} [isCurried] Specify composing for a curried function.\n * @returns {Array} Returns the new array of composed arguments.\n */\n function composeArgs(args, partials, holders, isCurried) {\n var argsIndex = -1,\n argsLength = args.length,\n holdersLength = holders.length,\n leftIndex = -1,\n leftLength = partials.length,\n rangeLength = nativeMax(argsLength - holdersLength, 0),\n result = Array(leftLength + rangeLength),\n isUncurried = !isCurried;\n\n while (++leftIndex < leftLength) {\n result[leftIndex] = partials[leftIndex];\n }\n while (++argsIndex < holdersLength) {\n if (isUncurried || argsIndex < argsLength) {\n result[holders[argsIndex]] = args[argsIndex];\n }\n }\n while (rangeLength--) {\n result[leftIndex++] = args[argsIndex++];\n }\n return result;\n }\n\n /**\n * This function is like `composeArgs` except that the arguments composition\n * is tailored for `_.partialRight`.\n *\n * @private\n * @param {Array} args The provided arguments.\n * @param {Array} partials The arguments to append to those provided.\n * @param {Array} holders The `partials` placeholder indexes.\n * @params {boolean} [isCurried] Specify composing for a curried function.\n * @returns {Array} Returns the new array of composed arguments.\n */\n function composeArgsRight(args, partials, holders, isCurried) {\n var argsIndex = -1,\n argsLength = args.length,\n holdersIndex = -1,\n holdersLength = holders.length,\n rightIndex = -1,\n rightLength = partials.length,\n rangeLength = nativeMax(argsLength - holdersLength, 0),\n result = Array(rangeLength + rightLength),\n isUncurried = !isCurried;\n\n while (++argsIndex < rangeLength) {\n result[argsIndex] = args[argsIndex];\n }\n var offset = argsIndex;\n while (++rightIndex < rightLength) {\n result[offset + rightIndex] = partials[rightIndex];\n }\n while (++holdersIndex < holdersLength) {\n if (isUncurried || argsIndex < argsLength) {\n result[offset + holders[holdersIndex]] = args[argsIndex++];\n }\n }\n return result;\n }\n\n /**\n * Copies the values of `source` to `array`.\n *\n * @private\n * @param {Array} source The array to copy values from.\n * @param {Array} [array=[]] The array to copy values to.\n * @returns {Array} Returns `array`.\n */\n function copyArray(source, array) {\n var index = -1,\n length = source.length;\n\n array || (array = Array(length));\n while (++index < length) {\n array[index] = source[index];\n }\n return array;\n }\n\n /**\n * Copies properties of `source` to `object`.\n *\n * @private\n * @param {Object} source The object to copy properties from.\n * @param {Array} props The property identifiers to copy.\n * @param {Object} [object={}] The object to copy properties to.\n * @param {Function} [customizer] The function to customize copied values.\n * @returns {Object} Returns `object`.\n */\n function copyObject(source, props, object, customizer) {\n var isNew = !object;\n object || (object = {});\n\n var index = -1,\n length = props.length;\n\n while (++index < length) {\n var key = props[index];\n\n var newValue = customizer\n ? customizer(object[key], source[key], key, object, source)\n : undefined;\n\n if (newValue === undefined) {\n newValue = source[key];\n }\n if (isNew) {\n baseAssignValue(object, key, newValue);\n } else {\n assignValue(object, key, newValue);\n }\n }\n return object;\n }\n\n /**\n * Copies own symbols of `source` to `object`.\n *\n * @private\n * @param {Object} source The object to copy symbols from.\n * @param {Object} [object={}] The object to copy symbols to.\n * @returns {Object} Returns `object`.\n */\n function copySymbols(source, object) {\n return copyObject(source, getSymbols(source), object);\n }\n\n /**\n * Copies own and inherited symbols of `source` to `object`.\n *\n * @private\n * @param {Object} source The object to copy symbols from.\n * @param {Object} [object={}] The object to copy symbols to.\n * @returns {Object} Returns `object`.\n */\n function copySymbolsIn(source, object) {\n return copyObject(source, getSymbolsIn(source), object);\n }\n\n /**\n * Creates a function like `_.groupBy`.\n *\n * @private\n * @param {Function} setter The function to set accumulator values.\n * @param {Function} [initializer] The accumulator object initializer.\n * @returns {Function} Returns the new aggregator function.\n */\n function createAggregator(setter, initializer) {\n return function(collection, iteratee) {\n var func = isArray(collection) ? arrayAggregator : baseAggregator,\n accumulator = initializer ? initializer() : {};\n\n return func(collection, setter, getIteratee(iteratee, 2), accumulator);\n };\n }\n\n /**\n * Creates a function like `_.assign`.\n *\n * @private\n * @param {Function} assigner The function to assign values.\n * @returns {Function} Returns the new assigner function.\n */\n function createAssigner(assigner) {\n return baseRest(function(object, sources) {\n var index = -1,\n length = sources.length,\n customizer = length > 1 ? sources[length - 1] : undefined,\n guard = length > 2 ? sources[2] : undefined;\n\n customizer = (assigner.length > 3 && typeof customizer == 'function')\n ? (length--, customizer)\n : undefined;\n\n if (guard && isIterateeCall(sources[0], sources[1], guard)) {\n customizer = length < 3 ? undefined : customizer;\n length = 1;\n }\n object = Object(object);\n while (++index < length) {\n var source = sources[index];\n if (source) {\n assigner(object, source, index, customizer);\n }\n }\n return object;\n });\n }\n\n /**\n * Creates a `baseEach` or `baseEachRight` function.\n *\n * @private\n * @param {Function} eachFunc The function to iterate over a collection.\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {Function} Returns the new base function.\n */\n function createBaseEach(eachFunc, fromRight) {\n return function(collection, iteratee) {\n if (collection == null) {\n return collection;\n }\n if (!isArrayLike(collection)) {\n return eachFunc(collection, iteratee);\n }\n var length = collection.length,\n index = fromRight ? length : -1,\n iterable = Object(collection);\n\n while ((fromRight ? index-- : ++index < length)) {\n if (iteratee(iterable[index], index, iterable) === false) {\n break;\n }\n }\n return collection;\n };\n }\n\n /**\n * Creates a base function for methods like `_.forIn` and `_.forOwn`.\n *\n * @private\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {Function} Returns the new base function.\n */\n function createBaseFor(fromRight) {\n return function(object, iteratee, keysFunc) {\n var index = -1,\n iterable = Object(object),\n props = keysFunc(object),\n length = props.length;\n\n while (length--) {\n var key = props[fromRight ? length : ++index];\n if (iteratee(iterable[key], key, iterable) === false) {\n break;\n }\n }\n return object;\n };\n }\n\n /**\n * Creates a function that wraps `func` to invoke it with the optional `this`\n * binding of `thisArg`.\n *\n * @private\n * @param {Function} func The function to wrap.\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n * @param {*} [thisArg] The `this` binding of `func`.\n * @returns {Function} Returns the new wrapped function.\n */\n function createBind(func, bitmask, thisArg) {\n var isBind = bitmask & WRAP_BIND_FLAG,\n Ctor = createCtor(func);\n\n function wrapper() {\n var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;\n return fn.apply(isBind ? thisArg : this, arguments);\n }\n return wrapper;\n }\n\n /**\n * Creates a function like `_.lowerFirst`.\n *\n * @private\n * @param {string} methodName The name of the `String` case method to use.\n * @returns {Function} Returns the new case function.\n */\n function createCaseFirst(methodName) {\n return function(string) {\n string = toString(string);\n\n var strSymbols = hasUnicode(string)\n ? stringToArray(string)\n : undefined;\n\n var chr = strSymbols\n ? strSymbols[0]\n : string.charAt(0);\n\n var trailing = strSymbols\n ? castSlice(strSymbols, 1).join('')\n : string.slice(1);\n\n return chr[methodName]() + trailing;\n };\n }\n\n /**\n * Creates a function like `_.camelCase`.\n *\n * @private\n * @param {Function} callback The function to combine each word.\n * @returns {Function} Returns the new compounder function.\n */\n function createCompounder(callback) {\n return function(string) {\n return arrayReduce(words(deburr(string).replace(reApos, '')), callback, '');\n };\n }\n\n /**\n * Creates a function that produces an instance of `Ctor` regardless of\n * whether it was invoked as part of a `new` expression or by `call` or `apply`.\n *\n * @private\n * @param {Function} Ctor The constructor to wrap.\n * @returns {Function} Returns the new wrapped function.\n */\n function createCtor(Ctor) {\n return function() {\n // Use a `switch` statement to work with class constructors. See\n // http://ecma-international.org/ecma-262/7.0/#sec-ecmascript-function-objects-call-thisargument-argumentslist\n // for more details.\n var args = arguments;\n switch (args.length) {\n case 0: return new Ctor;\n case 1: return new Ctor(args[0]);\n case 2: return new Ctor(args[0], args[1]);\n case 3: return new Ctor(args[0], args[1], args[2]);\n case 4: return new Ctor(args[0], args[1], args[2], args[3]);\n case 5: return new Ctor(args[0], args[1], args[2], args[3], args[4]);\n case 6: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5]);\n case 7: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5], args[6]);\n }\n var thisBinding = baseCreate(Ctor.prototype),\n result = Ctor.apply(thisBinding, args);\n\n // Mimic the constructor's `return` behavior.\n // See https://es5.github.io/#x13.2.2 for more details.\n return isObject(result) ? result : thisBinding;\n };\n }\n\n /**\n * Creates a function that wraps `func` to enable currying.\n *\n * @private\n * @param {Function} func The function to wrap.\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n * @param {number} arity The arity of `func`.\n * @returns {Function} Returns the new wrapped function.\n */\n function createCurry(func, bitmask, arity) {\n var Ctor = createCtor(func);\n\n function wrapper() {\n var length = arguments.length,\n args = Array(length),\n index = length,\n placeholder = getHolder(wrapper);\n\n while (index--) {\n args[index] = arguments[index];\n }\n var holders = (length < 3 && args[0] !== placeholder && args[length - 1] !== placeholder)\n ? []\n : replaceHolders(args, placeholder);\n\n length -= holders.length;\n if (length < arity) {\n return createRecurry(\n func, bitmask, createHybrid, wrapper.placeholder, undefined,\n args, holders, undefined, undefined, arity - length);\n }\n var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;\n return apply(fn, this, args);\n }\n return wrapper;\n }\n\n /**\n * Creates a `_.find` or `_.findLast` function.\n *\n * @private\n * @param {Function} findIndexFunc The function to find the collection index.\n * @returns {Function} Returns the new find function.\n */\n function createFind(findIndexFunc) {\n return function(collection, predicate, fromIndex) {\n var iterable = Object(collection);\n if (!isArrayLike(collection)) {\n var iteratee = getIteratee(predicate, 3);\n collection = keys(collection);\n predicate = function(key) { return iteratee(iterable[key], key, iterable); };\n }\n var index = findIndexFunc(collection, predicate, fromIndex);\n return index > -1 ? iterable[iteratee ? collection[index] : index] : undefined;\n };\n }\n\n /**\n * Creates a `_.flow` or `_.flowRight` function.\n *\n * @private\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {Function} Returns the new flow function.\n */\n function createFlow(fromRight) {\n return flatRest(function(funcs) {\n var length = funcs.length,\n index = length,\n prereq = LodashWrapper.prototype.thru;\n\n if (fromRight) {\n funcs.reverse();\n }\n while (index--) {\n var func = funcs[index];\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n if (prereq && !wrapper && getFuncName(func) == 'wrapper') {\n var wrapper = new LodashWrapper([], true);\n }\n }\n index = wrapper ? index : length;\n while (++index < length) {\n func = funcs[index];\n\n var funcName = getFuncName(func),\n data = funcName == 'wrapper' ? getData(func) : undefined;\n\n if (data && isLaziable(data[0]) &&\n data[1] == (WRAP_ARY_FLAG | WRAP_CURRY_FLAG | WRAP_PARTIAL_FLAG | WRAP_REARG_FLAG) &&\n !data[4].length && data[9] == 1\n ) {\n wrapper = wrapper[getFuncName(data[0])].apply(wrapper, data[3]);\n } else {\n wrapper = (func.length == 1 && isLaziable(func))\n ? wrapper[funcName]()\n : wrapper.thru(func);\n }\n }\n return function() {\n var args = arguments,\n value = args[0];\n\n if (wrapper && args.length == 1 && isArray(value)) {\n return wrapper.plant(value).value();\n }\n var index = 0,\n result = length ? funcs[index].apply(this, args) : value;\n\n while (++index < length) {\n result = funcs[index].call(this, result);\n }\n return result;\n };\n });\n }\n\n /**\n * Creates a function that wraps `func` to invoke it with optional `this`\n * binding of `thisArg`, partial application, and currying.\n *\n * @private\n * @param {Function|string} func The function or method name to wrap.\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n * @param {*} [thisArg] The `this` binding of `func`.\n * @param {Array} [partials] The arguments to prepend to those provided to\n * the new function.\n * @param {Array} [holders] The `partials` placeholder indexes.\n * @param {Array} [partialsRight] The arguments to append to those provided\n * to the new function.\n * @param {Array} [holdersRight] The `partialsRight` placeholder indexes.\n * @param {Array} [argPos] The argument positions of the new function.\n * @param {number} [ary] The arity cap of `func`.\n * @param {number} [arity] The arity of `func`.\n * @returns {Function} Returns the new wrapped function.\n */\n function createHybrid(func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity) {\n var isAry = bitmask & WRAP_ARY_FLAG,\n isBind = bitmask & WRAP_BIND_FLAG,\n isBindKey = bitmask & WRAP_BIND_KEY_FLAG,\n isCurried = bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG),\n isFlip = bitmask & WRAP_FLIP_FLAG,\n Ctor = isBindKey ? undefined : createCtor(func);\n\n function wrapper() {\n var length = arguments.length,\n args = Array(length),\n index = length;\n\n while (index--) {\n args[index] = arguments[index];\n }\n if (isCurried) {\n var placeholder = getHolder(wrapper),\n holdersCount = countHolders(args, placeholder);\n }\n if (partials) {\n args = composeArgs(args, partials, holders, isCurried);\n }\n if (partialsRight) {\n args = composeArgsRight(args, partialsRight, holdersRight, isCurried);\n }\n length -= holdersCount;\n if (isCurried && length < arity) {\n var newHolders = replaceHolders(args, placeholder);\n return createRecurry(\n func, bitmask, createHybrid, wrapper.placeholder, thisArg,\n args, newHolders, argPos, ary, arity - length\n );\n }\n var thisBinding = isBind ? thisArg : this,\n fn = isBindKey ? thisBinding[func] : func;\n\n length = args.length;\n if (argPos) {\n args = reorder(args, argPos);\n } else if (isFlip && length > 1) {\n args.reverse();\n }\n if (isAry && ary < length) {\n args.length = ary;\n }\n if (this && this !== root && this instanceof wrapper) {\n fn = Ctor || createCtor(fn);\n }\n return fn.apply(thisBinding, args);\n }\n return wrapper;\n }\n\n /**\n * Creates a function like `_.invertBy`.\n *\n * @private\n * @param {Function} setter The function to set accumulator values.\n * @param {Function} toIteratee The function to resolve iteratees.\n * @returns {Function} Returns the new inverter function.\n */\n function createInverter(setter, toIteratee) {\n return function(object, iteratee) {\n return baseInverter(object, setter, toIteratee(iteratee), {});\n };\n }\n\n /**\n * Creates a function that performs a mathematical operation on two values.\n *\n * @private\n * @param {Function} operator The function to perform the operation.\n * @param {number} [defaultValue] The value used for `undefined` arguments.\n * @returns {Function} Returns the new mathematical operation function.\n */\n function createMathOperation(operator, defaultValue) {\n return function(value, other) {\n var result;\n if (value === undefined && other === undefined) {\n return defaultValue;\n }\n if (value !== undefined) {\n result = value;\n }\n if (other !== undefined) {\n if (result === undefined) {\n return other;\n }\n if (typeof value == 'string' || typeof other == 'string') {\n value = baseToString(value);\n other = baseToString(other);\n } else {\n value = baseToNumber(value);\n other = baseToNumber(other);\n }\n result = operator(value, other);\n }\n return result;\n };\n }\n\n /**\n * Creates a function like `_.over`.\n *\n * @private\n * @param {Function} arrayFunc The function to iterate over iteratees.\n * @returns {Function} Returns the new over function.\n */\n function createOver(arrayFunc) {\n return flatRest(function(iteratees) {\n iteratees = arrayMap(iteratees, baseUnary(getIteratee()));\n return baseRest(function(args) {\n var thisArg = this;\n return arrayFunc(iteratees, function(iteratee) {\n return apply(iteratee, thisArg, args);\n });\n });\n });\n }\n\n /**\n * Creates the padding for `string` based on `length`. The `chars` string\n * is truncated if the number of characters exceeds `length`.\n *\n * @private\n * @param {number} length The padding length.\n * @param {string} [chars=' '] The string used as padding.\n * @returns {string} Returns the padding for `string`.\n */\n function createPadding(length, chars) {\n chars = chars === undefined ? ' ' : baseToString(chars);\n\n var charsLength = chars.length;\n if (charsLength < 2) {\n return charsLength ? baseRepeat(chars, length) : chars;\n }\n var result = baseRepeat(chars, nativeCeil(length / stringSize(chars)));\n return hasUnicode(chars)\n ? castSlice(stringToArray(result), 0, length).join('')\n : result.slice(0, length);\n }\n\n /**\n * Creates a function that wraps `func` to invoke it with the `this` binding\n * of `thisArg` and `partials` prepended to the arguments it receives.\n *\n * @private\n * @param {Function} func The function to wrap.\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n * @param {*} thisArg The `this` binding of `func`.\n * @param {Array} partials The arguments to prepend to those provided to\n * the new function.\n * @returns {Function} Returns the new wrapped function.\n */\n function createPartial(func, bitmask, thisArg, partials) {\n var isBind = bitmask & WRAP_BIND_FLAG,\n Ctor = createCtor(func);\n\n function wrapper() {\n var argsIndex = -1,\n argsLength = arguments.length,\n leftIndex = -1,\n leftLength = partials.length,\n args = Array(leftLength + argsLength),\n fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;\n\n while (++leftIndex < leftLength) {\n args[leftIndex] = partials[leftIndex];\n }\n while (argsLength--) {\n args[leftIndex++] = arguments[++argsIndex];\n }\n return apply(fn, isBind ? thisArg : this, args);\n }\n return wrapper;\n }\n\n /**\n * Creates a `_.range` or `_.rangeRight` function.\n *\n * @private\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {Function} Returns the new range function.\n */\n function createRange(fromRight) {\n return function(start, end, step) {\n if (step && typeof step != 'number' && isIterateeCall(start, end, step)) {\n end = step = undefined;\n }\n // Ensure the sign of `-0` is preserved.\n start = toFinite(start);\n if (end === undefined) {\n end = start;\n start = 0;\n } else {\n end = toFinite(end);\n }\n step = step === undefined ? (start < end ? 1 : -1) : toFinite(step);\n return baseRange(start, end, step, fromRight);\n };\n }\n\n /**\n * Creates a function that performs a relational operation on two values.\n *\n * @private\n * @param {Function} operator The function to perform the operation.\n * @returns {Function} Returns the new relational operation function.\n */\n function createRelationalOperation(operator) {\n return function(value, other) {\n if (!(typeof value == 'string' && typeof other == 'string')) {\n value = toNumber(value);\n other = toNumber(other);\n }\n return operator(value, other);\n };\n }\n\n /**\n * Creates a function that wraps `func` to continue currying.\n *\n * @private\n * @param {Function} func The function to wrap.\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n * @param {Function} wrapFunc The function to create the `func` wrapper.\n * @param {*} placeholder The placeholder value.\n * @param {*} [thisArg] The `this` binding of `func`.\n * @param {Array} [partials] The arguments to prepend to those provided to\n * the new function.\n * @param {Array} [holders] The `partials` placeholder indexes.\n * @param {Array} [argPos] The argument positions of the new function.\n * @param {number} [ary] The arity cap of `func`.\n * @param {number} [arity] The arity of `func`.\n * @returns {Function} Returns the new wrapped function.\n */\n function createRecurry(func, bitmask, wrapFunc, placeholder, thisArg, partials, holders, argPos, ary, arity) {\n var isCurry = bitmask & WRAP_CURRY_FLAG,\n newHolders = isCurry ? holders : undefined,\n newHoldersRight = isCurry ? undefined : holders,\n newPartials = isCurry ? partials : undefined,\n newPartialsRight = isCurry ? undefined : partials;\n\n bitmask |= (isCurry ? WRAP_PARTIAL_FLAG : WRAP_PARTIAL_RIGHT_FLAG);\n bitmask &= ~(isCurry ? WRAP_PARTIAL_RIGHT_FLAG : WRAP_PARTIAL_FLAG);\n\n if (!(bitmask & WRAP_CURRY_BOUND_FLAG)) {\n bitmask &= ~(WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG);\n }\n var newData = [\n func, bitmask, thisArg, newPartials, newHolders, newPartialsRight,\n newHoldersRight, argPos, ary, arity\n ];\n\n var result = wrapFunc.apply(undefined, newData);\n if (isLaziable(func)) {\n setData(result, newData);\n }\n result.placeholder = placeholder;\n return setWrapToString(result, func, bitmask);\n }\n\n /**\n * Creates a function like `_.round`.\n *\n * @private\n * @param {string} methodName The name of the `Math` method to use when rounding.\n * @returns {Function} Returns the new round function.\n */\n function createRound(methodName) {\n var func = Math[methodName];\n return function(number, precision) {\n number = toNumber(number);\n precision = precision == null ? 0 : nativeMin(toInteger(precision), 292);\n if (precision && nativeIsFinite(number)) {\n // Shift with exponential notation to avoid floating-point issues.\n // See [MDN](https://mdn.io/round#Examples) for more details.\n var pair = (toString(number) + 'e').split('e'),\n value = func(pair[0] + 'e' + (+pair[1] + precision));\n\n pair = (toString(value) + 'e').split('e');\n return +(pair[0] + 'e' + (+pair[1] - precision));\n }\n return func(number);\n };\n }\n\n /**\n * Creates a set object of `values`.\n *\n * @private\n * @param {Array} values The values to add to the set.\n * @returns {Object} Returns the new set.\n */\n var createSet = !(Set && (1 / setToArray(new Set([,-0]))[1]) == INFINITY) ? noop : function(values) {\n return new Set(values);\n };\n\n /**\n * Creates a `_.toPairs` or `_.toPairsIn` function.\n *\n * @private\n * @param {Function} keysFunc The function to get the keys of a given object.\n * @returns {Function} Returns the new pairs function.\n */\n function createToPairs(keysFunc) {\n return function(object) {\n var tag = getTag(object);\n if (tag == mapTag) {\n return mapToArray(object);\n }\n if (tag == setTag) {\n return setToPairs(object);\n }\n return baseToPairs(object, keysFunc(object));\n };\n }\n\n /**\n * Creates a function that either curries or invokes `func` with optional\n * `this` binding and partially applied arguments.\n *\n * @private\n * @param {Function|string} func The function or method name to wrap.\n * @param {number} bitmask The bitmask flags.\n * 1 - `_.bind`\n * 2 - `_.bindKey`\n * 4 - `_.curry` or `_.curryRight` of a bound function\n * 8 - `_.curry`\n * 16 - `_.curryRight`\n * 32 - `_.partial`\n * 64 - `_.partialRight`\n * 128 - `_.rearg`\n * 256 - `_.ary`\n * 512 - `_.flip`\n * @param {*} [thisArg] The `this` binding of `func`.\n * @param {Array} [partials] The arguments to be partially applied.\n * @param {Array} [holders] The `partials` placeholder indexes.\n * @param {Array} [argPos] The argument positions of the new function.\n * @param {number} [ary] The arity cap of `func`.\n * @param {number} [arity] The arity of `func`.\n * @returns {Function} Returns the new wrapped function.\n */\n function createWrap(func, bitmask, thisArg, partials, holders, argPos, ary, arity) {\n var isBindKey = bitmask & WRAP_BIND_KEY_FLAG;\n if (!isBindKey && typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n var length = partials ? partials.length : 0;\n if (!length) {\n bitmask &= ~(WRAP_PARTIAL_FLAG | WRAP_PARTIAL_RIGHT_FLAG);\n partials = holders = undefined;\n }\n ary = ary === undefined ? ary : nativeMax(toInteger(ary), 0);\n arity = arity === undefined ? arity : toInteger(arity);\n length -= holders ? holders.length : 0;\n\n if (bitmask & WRAP_PARTIAL_RIGHT_FLAG) {\n var partialsRight = partials,\n holdersRight = holders;\n\n partials = holders = undefined;\n }\n var data = isBindKey ? undefined : getData(func);\n\n var newData = [\n func, bitmask, thisArg, partials, holders, partialsRight, holdersRight,\n argPos, ary, arity\n ];\n\n if (data) {\n mergeData(newData, data);\n }\n func = newData[0];\n bitmask = newData[1];\n thisArg = newData[2];\n partials = newData[3];\n holders = newData[4];\n arity = newData[9] = newData[9] === undefined\n ? (isBindKey ? 0 : func.length)\n : nativeMax(newData[9] - length, 0);\n\n if (!arity && bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG)) {\n bitmask &= ~(WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG);\n }\n if (!bitmask || bitmask == WRAP_BIND_FLAG) {\n var result = createBind(func, bitmask, thisArg);\n } else if (bitmask == WRAP_CURRY_FLAG || bitmask == WRAP_CURRY_RIGHT_FLAG) {\n result = createCurry(func, bitmask, arity);\n } else if ((bitmask == WRAP_PARTIAL_FLAG || bitmask == (WRAP_BIND_FLAG | WRAP_PARTIAL_FLAG)) && !holders.length) {\n result = createPartial(func, bitmask, thisArg, partials);\n } else {\n result = createHybrid.apply(undefined, newData);\n }\n var setter = data ? baseSetData : setData;\n return setWrapToString(setter(result, newData), func, bitmask);\n }\n\n /**\n * Used by `_.defaults` to customize its `_.assignIn` use to assign properties\n * of source objects to the destination object for all destination properties\n * that resolve to `undefined`.\n *\n * @private\n * @param {*} objValue The destination value.\n * @param {*} srcValue The source value.\n * @param {string} key The key of the property to assign.\n * @param {Object} object The parent object of `objValue`.\n * @returns {*} Returns the value to assign.\n */\n function customDefaultsAssignIn(objValue, srcValue, key, object) {\n if (objValue === undefined ||\n (eq(objValue, objectProto[key]) && !hasOwnProperty.call(object, key))) {\n return srcValue;\n }\n return objValue;\n }\n\n /**\n * Used by `_.defaultsDeep` to customize its `_.merge` use to merge source\n * objects into destination objects that are passed thru.\n *\n * @private\n * @param {*} objValue The destination value.\n * @param {*} srcValue The source value.\n * @param {string} key The key of the property to merge.\n * @param {Object} object The parent object of `objValue`.\n * @param {Object} source The parent object of `srcValue`.\n * @param {Object} [stack] Tracks traversed source values and their merged\n * counterparts.\n * @returns {*} Returns the value to assign.\n */\n function customDefaultsMerge(objValue, srcValue, key, object, source, stack) {\n if (isObject(objValue) && isObject(srcValue)) {\n // Recursively merge objects and arrays (susceptible to call stack limits).\n stack.set(srcValue, objValue);\n baseMerge(objValue, srcValue, undefined, customDefaultsMerge, stack);\n stack['delete'](srcValue);\n }\n return objValue;\n }\n\n /**\n * Used by `_.omit` to customize its `_.cloneDeep` use to only clone plain\n * objects.\n *\n * @private\n * @param {*} value The value to inspect.\n * @param {string} key The key of the property to inspect.\n * @returns {*} Returns the uncloned value or `undefined` to defer cloning to `_.cloneDeep`.\n */\n function customOmitClone(value) {\n return isPlainObject(value) ? undefined : value;\n }\n\n /**\n * A specialized version of `baseIsEqualDeep` for arrays with support for\n * partial deep comparisons.\n *\n * @private\n * @param {Array} array The array to compare.\n * @param {Array} other The other array to compare.\n * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n * @param {Function} customizer The function to customize comparisons.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Object} stack Tracks traversed `array` and `other` objects.\n * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.\n */\n function equalArrays(array, other, bitmask, customizer, equalFunc, stack) {\n var isPartial = bitmask & COMPARE_PARTIAL_FLAG,\n arrLength = array.length,\n othLength = other.length;\n\n if (arrLength != othLength && !(isPartial && othLength > arrLength)) {\n return false;\n }\n // Check that cyclic values are equal.\n var arrStacked = stack.get(array);\n var othStacked = stack.get(other);\n if (arrStacked && othStacked) {\n return arrStacked == other && othStacked == array;\n }\n var index = -1,\n result = true,\n seen = (bitmask & COMPARE_UNORDERED_FLAG) ? new SetCache : undefined;\n\n stack.set(array, other);\n stack.set(other, array);\n\n // Ignore non-index properties.\n while (++index < arrLength) {\n var arrValue = array[index],\n othValue = other[index];\n\n if (customizer) {\n var compared = isPartial\n ? customizer(othValue, arrValue, index, other, array, stack)\n : customizer(arrValue, othValue, index, array, other, stack);\n }\n if (compared !== undefined) {\n if (compared) {\n continue;\n }\n result = false;\n break;\n }\n // Recursively compare arrays (susceptible to call stack limits).\n if (seen) {\n if (!arraySome(other, function(othValue, othIndex) {\n if (!cacheHas(seen, othIndex) &&\n (arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) {\n return seen.push(othIndex);\n }\n })) {\n result = false;\n break;\n }\n } else if (!(\n arrValue === othValue ||\n equalFunc(arrValue, othValue, bitmask, customizer, stack)\n )) {\n result = false;\n break;\n }\n }\n stack['delete'](array);\n stack['delete'](other);\n return result;\n }\n\n /**\n * A specialized version of `baseIsEqualDeep` for comparing objects of\n * the same `toStringTag`.\n *\n * **Note:** This function only supports comparing values with tags of\n * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {string} tag The `toStringTag` of the objects to compare.\n * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n * @param {Function} customizer The function to customize comparisons.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Object} stack Tracks traversed `object` and `other` objects.\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n */\n function equalByTag(object, other, tag, bitmask, customizer, equalFunc, stack) {\n switch (tag) {\n case dataViewTag:\n if ((object.byteLength != other.byteLength) ||\n (object.byteOffset != other.byteOffset)) {\n return false;\n }\n object = object.buffer;\n other = other.buffer;\n\n case arrayBufferTag:\n if ((object.byteLength != other.byteLength) ||\n !equalFunc(new Uint8Array(object), new Uint8Array(other))) {\n return false;\n }\n return true;\n\n case boolTag:\n case dateTag:\n case numberTag:\n // Coerce booleans to `1` or `0` and dates to milliseconds.\n // Invalid dates are coerced to `NaN`.\n return eq(+object, +other);\n\n case errorTag:\n return object.name == other.name && object.message == other.message;\n\n case regexpTag:\n case stringTag:\n // Coerce regexes to strings and treat strings, primitives and objects,\n // as equal. See http://www.ecma-international.org/ecma-262/7.0/#sec-regexp.prototype.tostring\n // for more details.\n return object == (other + '');\n\n case mapTag:\n var convert = mapToArray;\n\n case setTag:\n var isPartial = bitmask & COMPARE_PARTIAL_FLAG;\n convert || (convert = setToArray);\n\n if (object.size != other.size && !isPartial) {\n return false;\n }\n // Assume cyclic values are equal.\n var stacked = stack.get(object);\n if (stacked) {\n return stacked == other;\n }\n bitmask |= COMPARE_UNORDERED_FLAG;\n\n // Recursively compare objects (susceptible to call stack limits).\n stack.set(object, other);\n var result = equalArrays(convert(object), convert(other), bitmask, customizer, equalFunc, stack);\n stack['delete'](object);\n return result;\n\n case symbolTag:\n if (symbolValueOf) {\n return symbolValueOf.call(object) == symbolValueOf.call(other);\n }\n }\n return false;\n }\n\n /**\n * A specialized version of `baseIsEqualDeep` for objects with support for\n * partial deep comparisons.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n * @param {Function} customizer The function to customize comparisons.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Object} stack Tracks traversed `object` and `other` objects.\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n */\n function equalObjects(object, other, bitmask, customizer, equalFunc, stack) {\n var isPartial = bitmask & COMPARE_PARTIAL_FLAG,\n objProps = getAllKeys(object),\n objLength = objProps.length,\n othProps = getAllKeys(other),\n othLength = othProps.length;\n\n if (objLength != othLength && !isPartial) {\n return false;\n }\n var index = objLength;\n while (index--) {\n var key = objProps[index];\n if (!(isPartial ? key in other : hasOwnProperty.call(other, key))) {\n return false;\n }\n }\n // Check that cyclic values are equal.\n var objStacked = stack.get(object);\n var othStacked = stack.get(other);\n if (objStacked && othStacked) {\n return objStacked == other && othStacked == object;\n }\n var result = true;\n stack.set(object, other);\n stack.set(other, object);\n\n var skipCtor = isPartial;\n while (++index < objLength) {\n key = objProps[index];\n var objValue = object[key],\n othValue = other[key];\n\n if (customizer) {\n var compared = isPartial\n ? customizer(othValue, objValue, key, other, object, stack)\n : customizer(objValue, othValue, key, object, other, stack);\n }\n // Recursively compare objects (susceptible to call stack limits).\n if (!(compared === undefined\n ? (objValue === othValue || equalFunc(objValue, othValue, bitmask, customizer, stack))\n : compared\n )) {\n result = false;\n break;\n }\n skipCtor || (skipCtor = key == 'constructor');\n }\n if (result && !skipCtor) {\n var objCtor = object.constructor,\n othCtor = other.constructor;\n\n // Non `Object` object instances with different constructors are not equal.\n if (objCtor != othCtor &&\n ('constructor' in object && 'constructor' in other) &&\n !(typeof objCtor == 'function' && objCtor instanceof objCtor &&\n typeof othCtor == 'function' && othCtor instanceof othCtor)) {\n result = false;\n }\n }\n stack['delete'](object);\n stack['delete'](other);\n return result;\n }\n\n /**\n * A specialized version of `baseRest` which flattens the rest array.\n *\n * @private\n * @param {Function} func The function to apply a rest parameter to.\n * @returns {Function} Returns the new function.\n */\n function flatRest(func) {\n return setToString(overRest(func, undefined, flatten), func + '');\n }\n\n /**\n * Creates an array of own enumerable property names and symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names and symbols.\n */\n function getAllKeys(object) {\n return baseGetAllKeys(object, keys, getSymbols);\n }\n\n /**\n * Creates an array of own and inherited enumerable property names and\n * symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names and symbols.\n */\n function getAllKeysIn(object) {\n return baseGetAllKeys(object, keysIn, getSymbolsIn);\n }\n\n /**\n * Gets metadata for `func`.\n *\n * @private\n * @param {Function} func The function to query.\n * @returns {*} Returns the metadata for `func`.\n */\n var getData = !metaMap ? noop : function(func) {\n return metaMap.get(func);\n };\n\n /**\n * Gets the name of `func`.\n *\n * @private\n * @param {Function} func The function to query.\n * @returns {string} Returns the function name.\n */\n function getFuncName(func) {\n var result = (func.name + ''),\n array = realNames[result],\n length = hasOwnProperty.call(realNames, result) ? array.length : 0;\n\n while (length--) {\n var data = array[length],\n otherFunc = data.func;\n if (otherFunc == null || otherFunc == func) {\n return data.name;\n }\n }\n return result;\n }\n\n /**\n * Gets the argument placeholder value for `func`.\n *\n * @private\n * @param {Function} func The function to inspect.\n * @returns {*} Returns the placeholder value.\n */\n function getHolder(func) {\n var object = hasOwnProperty.call(lodash, 'placeholder') ? lodash : func;\n return object.placeholder;\n }\n\n /**\n * Gets the appropriate \"iteratee\" function. If `_.iteratee` is customized,\n * this function returns the custom method, otherwise it returns `baseIteratee`.\n * If arguments are provided, the chosen function is invoked with them and\n * its result is returned.\n *\n * @private\n * @param {*} [value] The value to convert to an iteratee.\n * @param {number} [arity] The arity of the created iteratee.\n * @returns {Function} Returns the chosen function or its result.\n */\n function getIteratee() {\n var result = lodash.iteratee || iteratee;\n result = result === iteratee ? baseIteratee : result;\n return arguments.length ? result(arguments[0], arguments[1]) : result;\n }\n\n /**\n * Gets the data for `map`.\n *\n * @private\n * @param {Object} map The map to query.\n * @param {string} key The reference key.\n * @returns {*} Returns the map data.\n */\n function getMapData(map, key) {\n var data = map.__data__;\n return isKeyable(key)\n ? data[typeof key == 'string' ? 'string' : 'hash']\n : data.map;\n }\n\n /**\n * Gets the property names, values, and compare flags of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the match data of `object`.\n */\n function getMatchData(object) {\n var result = keys(object),\n length = result.length;\n\n while (length--) {\n var key = result[length],\n value = object[key];\n\n result[length] = [key, value, isStrictComparable(value)];\n }\n return result;\n }\n\n /**\n * Gets the native function at `key` of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {string} key The key of the method to get.\n * @returns {*} Returns the function if it's native, else `undefined`.\n */\n function getNative(object, key) {\n var value = getValue(object, key);\n return baseIsNative(value) ? value : undefined;\n }\n\n /**\n * A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values.\n *\n * @private\n * @param {*} value The value to query.\n * @returns {string} Returns the raw `toStringTag`.\n */\n function getRawTag(value) {\n var isOwn = hasOwnProperty.call(value, symToStringTag),\n tag = value[symToStringTag];\n\n try {\n value[symToStringTag] = undefined;\n var unmasked = true;\n } catch (e) {}\n\n var result = nativeObjectToString.call(value);\n if (unmasked) {\n if (isOwn) {\n value[symToStringTag] = tag;\n } else {\n delete value[symToStringTag];\n }\n }\n return result;\n }\n\n /**\n * Creates an array of the own enumerable symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of symbols.\n */\n var getSymbols = !nativeGetSymbols ? stubArray : function(object) {\n if (object == null) {\n return [];\n }\n object = Object(object);\n return arrayFilter(nativeGetSymbols(object), function(symbol) {\n return propertyIsEnumerable.call(object, symbol);\n });\n };\n\n /**\n * Creates an array of the own and inherited enumerable symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of symbols.\n */\n var getSymbolsIn = !nativeGetSymbols ? stubArray : function(object) {\n var result = [];\n while (object) {\n arrayPush(result, getSymbols(object));\n object = getPrototype(object);\n }\n return result;\n };\n\n /**\n * Gets the `toStringTag` of `value`.\n *\n * @private\n * @param {*} value The value to query.\n * @returns {string} Returns the `toStringTag`.\n */\n var getTag = baseGetTag;\n\n // Fallback for data views, maps, sets, and weak maps in IE 11 and promises in Node.js < 6.\n if ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) ||\n (Map && getTag(new Map) != mapTag) ||\n (Promise && getTag(Promise.resolve()) != promiseTag) ||\n (Set && getTag(new Set) != setTag) ||\n (WeakMap && getTag(new WeakMap) != weakMapTag)) {\n getTag = function(value) {\n var result = baseGetTag(value),\n Ctor = result == objectTag ? value.constructor : undefined,\n ctorString = Ctor ? toSource(Ctor) : '';\n\n if (ctorString) {\n switch (ctorString) {\n case dataViewCtorString: return dataViewTag;\n case mapCtorString: return mapTag;\n case promiseCtorString: return promiseTag;\n case setCtorString: return setTag;\n case weakMapCtorString: return weakMapTag;\n }\n }\n return result;\n };\n }\n\n /**\n * Gets the view, applying any `transforms` to the `start` and `end` positions.\n *\n * @private\n * @param {number} start The start of the view.\n * @param {number} end The end of the view.\n * @param {Array} transforms The transformations to apply to the view.\n * @returns {Object} Returns an object containing the `start` and `end`\n * positions of the view.\n */\n function getView(start, end, transforms) {\n var index = -1,\n length = transforms.length;\n\n while (++index < length) {\n var data = transforms[index],\n size = data.size;\n\n switch (data.type) {\n case 'drop': start += size; break;\n case 'dropRight': end -= size; break;\n case 'take': end = nativeMin(end, start + size); break;\n case 'takeRight': start = nativeMax(start, end - size); break;\n }\n }\n return { 'start': start, 'end': end };\n }\n\n /**\n * Extracts wrapper details from the `source` body comment.\n *\n * @private\n * @param {string} source The source to inspect.\n * @returns {Array} Returns the wrapper details.\n */\n function getWrapDetails(source) {\n var match = source.match(reWrapDetails);\n return match ? match[1].split(reSplitDetails) : [];\n }\n\n /**\n * Checks if `path` exists on `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array|string} path The path to check.\n * @param {Function} hasFunc The function to check properties.\n * @returns {boolean} Returns `true` if `path` exists, else `false`.\n */\n function hasPath(object, path, hasFunc) {\n path = castPath(path, object);\n\n var index = -1,\n length = path.length,\n result = false;\n\n while (++index < length) {\n var key = toKey(path[index]);\n if (!(result = object != null && hasFunc(object, key))) {\n break;\n }\n object = object[key];\n }\n if (result || ++index != length) {\n return result;\n }\n length = object == null ? 0 : object.length;\n return !!length && isLength(length) && isIndex(key, length) &&\n (isArray(object) || isArguments(object));\n }\n\n /**\n * Initializes an array clone.\n *\n * @private\n * @param {Array} array The array to clone.\n * @returns {Array} Returns the initialized clone.\n */\n function initCloneArray(array) {\n var length = array.length,\n result = new array.constructor(length);\n\n // Add properties assigned by `RegExp#exec`.\n if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) {\n result.index = array.index;\n result.input = array.input;\n }\n return result;\n }\n\n /**\n * Initializes an object clone.\n *\n * @private\n * @param {Object} object The object to clone.\n * @returns {Object} Returns the initialized clone.\n */\n function initCloneObject(object) {\n return (typeof object.constructor == 'function' && !isPrototype(object))\n ? baseCreate(getPrototype(object))\n : {};\n }\n\n /**\n * Initializes an object clone based on its `toStringTag`.\n *\n * **Note:** This function only supports cloning values with tags of\n * `Boolean`, `Date`, `Error`, `Map`, `Number`, `RegExp`, `Set`, or `String`.\n *\n * @private\n * @param {Object} object The object to clone.\n * @param {string} tag The `toStringTag` of the object to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Object} Returns the initialized clone.\n */\n function initCloneByTag(object, tag, isDeep) {\n var Ctor = object.constructor;\n switch (tag) {\n case arrayBufferTag:\n return cloneArrayBuffer(object);\n\n case boolTag:\n case dateTag:\n return new Ctor(+object);\n\n case dataViewTag:\n return cloneDataView(object, isDeep);\n\n case float32Tag: case float64Tag:\n case int8Tag: case int16Tag: case int32Tag:\n case uint8Tag: case uint8ClampedTag: case uint16Tag: case uint32Tag:\n return cloneTypedArray(object, isDeep);\n\n case mapTag:\n return new Ctor;\n\n case numberTag:\n case stringTag:\n return new Ctor(object);\n\n case regexpTag:\n return cloneRegExp(object);\n\n case setTag:\n return new Ctor;\n\n case symbolTag:\n return cloneSymbol(object);\n }\n }\n\n /**\n * Inserts wrapper `details` in a comment at the top of the `source` body.\n *\n * @private\n * @param {string} source The source to modify.\n * @returns {Array} details The details to insert.\n * @returns {string} Returns the modified source.\n */\n function insertWrapDetails(source, details) {\n var length = details.length;\n if (!length) {\n return source;\n }\n var lastIndex = length - 1;\n details[lastIndex] = (length > 1 ? '& ' : '') + details[lastIndex];\n details = details.join(length > 2 ? ', ' : ' ');\n return source.replace(reWrapComment, '{\\n/* [wrapped with ' + details + '] */\\n');\n }\n\n /**\n * Checks if `value` is a flattenable `arguments` object or array.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is flattenable, else `false`.\n */\n function isFlattenable(value) {\n return isArray(value) || isArguments(value) ||\n !!(spreadableSymbol && value && value[spreadableSymbol]);\n }\n\n /**\n * Checks if `value` is a valid array-like index.\n *\n * @private\n * @param {*} value The value to check.\n * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.\n * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.\n */\n function isIndex(value, length) {\n var type = typeof value;\n length = length == null ? MAX_SAFE_INTEGER : length;\n\n return !!length &&\n (type == 'number' ||\n (type != 'symbol' && reIsUint.test(value))) &&\n (value > -1 && value % 1 == 0 && value < length);\n }\n\n /**\n * Checks if the given arguments are from an iteratee call.\n *\n * @private\n * @param {*} value The potential iteratee value argument.\n * @param {*} index The potential iteratee index or key argument.\n * @param {*} object The potential iteratee object argument.\n * @returns {boolean} Returns `true` if the arguments are from an iteratee call,\n * else `false`.\n */\n function isIterateeCall(value, index, object) {\n if (!isObject(object)) {\n return false;\n }\n var type = typeof index;\n if (type == 'number'\n ? (isArrayLike(object) && isIndex(index, object.length))\n : (type == 'string' && index in object)\n ) {\n return eq(object[index], value);\n }\n return false;\n }\n\n /**\n * Checks if `value` is a property name and not a property path.\n *\n * @private\n * @param {*} value The value to check.\n * @param {Object} [object] The object to query keys on.\n * @returns {boolean} Returns `true` if `value` is a property name, else `false`.\n */\n function isKey(value, object) {\n if (isArray(value)) {\n return false;\n }\n var type = typeof value;\n if (type == 'number' || type == 'symbol' || type == 'boolean' ||\n value == null || isSymbol(value)) {\n return true;\n }\n return reIsPlainProp.test(value) || !reIsDeepProp.test(value) ||\n (object != null && value in Object(object));\n }\n\n /**\n * Checks if `value` is suitable for use as unique object key.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is suitable, else `false`.\n */\n function isKeyable(value) {\n var type = typeof value;\n return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean')\n ? (value !== '__proto__')\n : (value === null);\n }\n\n /**\n * Checks if `func` has a lazy counterpart.\n *\n * @private\n * @param {Function} func The function to check.\n * @returns {boolean} Returns `true` if `func` has a lazy counterpart,\n * else `false`.\n */\n function isLaziable(func) {\n var funcName = getFuncName(func),\n other = lodash[funcName];\n\n if (typeof other != 'function' || !(funcName in LazyWrapper.prototype)) {\n return false;\n }\n if (func === other) {\n return true;\n }\n var data = getData(other);\n return !!data && func === data[0];\n }\n\n /**\n * Checks if `func` has its source masked.\n *\n * @private\n * @param {Function} func The function to check.\n * @returns {boolean} Returns `true` if `func` is masked, else `false`.\n */\n function isMasked(func) {\n return !!maskSrcKey && (maskSrcKey in func);\n }\n\n /**\n * Checks if `func` is capable of being masked.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `func` is maskable, else `false`.\n */\n var isMaskable = coreJsData ? isFunction : stubFalse;\n\n /**\n * Checks if `value` is likely a prototype object.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a prototype, else `false`.\n */\n function isPrototype(value) {\n var Ctor = value && value.constructor,\n proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto;\n\n return value === proto;\n }\n\n /**\n * Checks if `value` is suitable for strict equality comparisons, i.e. `===`.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` if suitable for strict\n * equality comparisons, else `false`.\n */\n function isStrictComparable(value) {\n return value === value && !isObject(value);\n }\n\n /**\n * A specialized version of `matchesProperty` for source values suitable\n * for strict equality comparisons, i.e. `===`.\n *\n * @private\n * @param {string} key The key of the property to get.\n * @param {*} srcValue The value to match.\n * @returns {Function} Returns the new spec function.\n */\n function matchesStrictComparable(key, srcValue) {\n return function(object) {\n if (object == null) {\n return false;\n }\n return object[key] === srcValue &&\n (srcValue !== undefined || (key in Object(object)));\n };\n }\n\n /**\n * A specialized version of `_.memoize` which clears the memoized function's\n * cache when it exceeds `MAX_MEMOIZE_SIZE`.\n *\n * @private\n * @param {Function} func The function to have its output memoized.\n * @returns {Function} Returns the new memoized function.\n */\n function memoizeCapped(func) {\n var result = memoize(func, function(key) {\n if (cache.size === MAX_MEMOIZE_SIZE) {\n cache.clear();\n }\n return key;\n });\n\n var cache = result.cache;\n return result;\n }\n\n /**\n * Merges the function metadata of `source` into `data`.\n *\n * Merging metadata reduces the number of wrappers used to invoke a function.\n * This is possible because methods like `_.bind`, `_.curry`, and `_.partial`\n * may be applied regardless of execution order. Methods like `_.ary` and\n * `_.rearg` modify function arguments, making the order in which they are\n * executed important, preventing the merging of metadata. However, we make\n * an exception for a safe combined case where curried functions have `_.ary`\n * and or `_.rearg` applied.\n *\n * @private\n * @param {Array} data The destination metadata.\n * @param {Array} source The source metadata.\n * @returns {Array} Returns `data`.\n */\n function mergeData(data, source) {\n var bitmask = data[1],\n srcBitmask = source[1],\n newBitmask = bitmask | srcBitmask,\n isCommon = newBitmask < (WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG | WRAP_ARY_FLAG);\n\n var isCombo =\n ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_CURRY_FLAG)) ||\n ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_REARG_FLAG) && (data[7].length <= source[8])) ||\n ((srcBitmask == (WRAP_ARY_FLAG | WRAP_REARG_FLAG)) && (source[7].length <= source[8]) && (bitmask == WRAP_CURRY_FLAG));\n\n // Exit early if metadata can't be merged.\n if (!(isCommon || isCombo)) {\n return data;\n }\n // Use source `thisArg` if available.\n if (srcBitmask & WRAP_BIND_FLAG) {\n data[2] = source[2];\n // Set when currying a bound function.\n newBitmask |= bitmask & WRAP_BIND_FLAG ? 0 : WRAP_CURRY_BOUND_FLAG;\n }\n // Compose partial arguments.\n var value = source[3];\n if (value) {\n var partials = data[3];\n data[3] = partials ? composeArgs(partials, value, source[4]) : value;\n data[4] = partials ? replaceHolders(data[3], PLACEHOLDER) : source[4];\n }\n // Compose partial right arguments.\n value = source[5];\n if (value) {\n partials = data[5];\n data[5] = partials ? composeArgsRight(partials, value, source[6]) : value;\n data[6] = partials ? replaceHolders(data[5], PLACEHOLDER) : source[6];\n }\n // Use source `argPos` if available.\n value = source[7];\n if (value) {\n data[7] = value;\n }\n // Use source `ary` if it's smaller.\n if (srcBitmask & WRAP_ARY_FLAG) {\n data[8] = data[8] == null ? source[8] : nativeMin(data[8], source[8]);\n }\n // Use source `arity` if one is not provided.\n if (data[9] == null) {\n data[9] = source[9];\n }\n // Use source `func` and merge bitmasks.\n data[0] = source[0];\n data[1] = newBitmask;\n\n return data;\n }\n\n /**\n * This function is like\n * [`Object.keys`](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)\n * except that it includes inherited enumerable properties.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n */\n function nativeKeysIn(object) {\n var result = [];\n if (object != null) {\n for (var key in Object(object)) {\n result.push(key);\n }\n }\n return result;\n }\n\n /**\n * Converts `value` to a string using `Object.prototype.toString`.\n *\n * @private\n * @param {*} value The value to convert.\n * @returns {string} Returns the converted string.\n */\n function objectToString(value) {\n return nativeObjectToString.call(value);\n }\n\n /**\n * A specialized version of `baseRest` which transforms the rest array.\n *\n * @private\n * @param {Function} func The function to apply a rest parameter to.\n * @param {number} [start=func.length-1] The start position of the rest parameter.\n * @param {Function} transform The rest array transform.\n * @returns {Function} Returns the new function.\n */\n function overRest(func, start, transform) {\n start = nativeMax(start === undefined ? (func.length - 1) : start, 0);\n return function() {\n var args = arguments,\n index = -1,\n length = nativeMax(args.length - start, 0),\n array = Array(length);\n\n while (++index < length) {\n array[index] = args[start + index];\n }\n index = -1;\n var otherArgs = Array(start + 1);\n while (++index < start) {\n otherArgs[index] = args[index];\n }\n otherArgs[start] = transform(array);\n return apply(func, this, otherArgs);\n };\n }\n\n /**\n * Gets the parent value at `path` of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array} path The path to get the parent value of.\n * @returns {*} Returns the parent value.\n */\n function parent(object, path) {\n return path.length < 2 ? object : baseGet(object, baseSlice(path, 0, -1));\n }\n\n /**\n * Reorder `array` according to the specified indexes where the element at\n * the first index is assigned as the first element, the element at\n * the second index is assigned as the second element, and so on.\n *\n * @private\n * @param {Array} array The array to reorder.\n * @param {Array} indexes The arranged array indexes.\n * @returns {Array} Returns `array`.\n */\n function reorder(array, indexes) {\n var arrLength = array.length,\n length = nativeMin(indexes.length, arrLength),\n oldArray = copyArray(array);\n\n while (length--) {\n var index = indexes[length];\n array[length] = isIndex(index, arrLength) ? oldArray[index] : undefined;\n }\n return array;\n }\n\n /**\n * Gets the value at `key`, unless `key` is \"__proto__\" or \"constructor\".\n *\n * @private\n * @param {Object} object The object to query.\n * @param {string} key The key of the property to get.\n * @returns {*} Returns the property value.\n */\n function safeGet(object, key) {\n if (key === 'constructor' && typeof object[key] === 'function') {\n return;\n }\n\n if (key == '__proto__') {\n return;\n }\n\n return object[key];\n }\n\n /**\n * Sets metadata for `func`.\n *\n * **Note:** If this function becomes hot, i.e. is invoked a lot in a short\n * period of time, it will trip its breaker and transition to an identity\n * function to avoid garbage collection pauses in V8. See\n * [V8 issue 2070](https://bugs.chromium.org/p/v8/issues/detail?id=2070)\n * for more details.\n *\n * @private\n * @param {Function} func The function to associate metadata with.\n * @param {*} data The metadata.\n * @returns {Function} Returns `func`.\n */\n var setData = shortOut(baseSetData);\n\n /**\n * A simple wrapper around the global [`setTimeout`](https://mdn.io/setTimeout).\n *\n * @private\n * @param {Function} func The function to delay.\n * @param {number} wait The number of milliseconds to delay invocation.\n * @returns {number|Object} Returns the timer id or timeout object.\n */\n var setTimeout = ctxSetTimeout || function(func, wait) {\n return root.setTimeout(func, wait);\n };\n\n /**\n * Sets the `toString` method of `func` to return `string`.\n *\n * @private\n * @param {Function} func The function to modify.\n * @param {Function} string The `toString` result.\n * @returns {Function} Returns `func`.\n */\n var setToString = shortOut(baseSetToString);\n\n /**\n * Sets the `toString` method of `wrapper` to mimic the source of `reference`\n * with wrapper details in a comment at the top of the source body.\n *\n * @private\n * @param {Function} wrapper The function to modify.\n * @param {Function} reference The reference function.\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n * @returns {Function} Returns `wrapper`.\n */\n function setWrapToString(wrapper, reference, bitmask) {\n var source = (reference + '');\n return setToString(wrapper, insertWrapDetails(source, updateWrapDetails(getWrapDetails(source), bitmask)));\n }\n\n /**\n * Creates a function that'll short out and invoke `identity` instead\n * of `func` when it's called `HOT_COUNT` or more times in `HOT_SPAN`\n * milliseconds.\n *\n * @private\n * @param {Function} func The function to restrict.\n * @returns {Function} Returns the new shortable function.\n */\n function shortOut(func) {\n var count = 0,\n lastCalled = 0;\n\n return function() {\n var stamp = nativeNow(),\n remaining = HOT_SPAN - (stamp - lastCalled);\n\n lastCalled = stamp;\n if (remaining > 0) {\n if (++count >= HOT_COUNT) {\n return arguments[0];\n }\n } else {\n count = 0;\n }\n return func.apply(undefined, arguments);\n };\n }\n\n /**\n * A specialized version of `_.shuffle` which mutates and sets the size of `array`.\n *\n * @private\n * @param {Array} array The array to shuffle.\n * @param {number} [size=array.length] The size of `array`.\n * @returns {Array} Returns `array`.\n */\n function shuffleSelf(array, size) {\n var index = -1,\n length = array.length,\n lastIndex = length - 1;\n\n size = size === undefined ? length : size;\n while (++index < size) {\n var rand = baseRandom(index, lastIndex),\n value = array[rand];\n\n array[rand] = array[index];\n array[index] = value;\n }\n array.length = size;\n return array;\n }\n\n /**\n * Converts `string` to a property path array.\n *\n * @private\n * @param {string} string The string to convert.\n * @returns {Array} Returns the property path array.\n */\n var stringToPath = memoizeCapped(function(string) {\n var result = [];\n if (string.charCodeAt(0) === 46 /* . */) {\n result.push('');\n }\n string.replace(rePropName, function(match, number, quote, subString) {\n result.push(quote ? subString.replace(reEscapeChar, '$1') : (number || match));\n });\n return result;\n });\n\n /**\n * Converts `value` to a string key if it's not a string or symbol.\n *\n * @private\n * @param {*} value The value to inspect.\n * @returns {string|symbol} Returns the key.\n */\n function toKey(value) {\n if (typeof value == 'string' || isSymbol(value)) {\n return value;\n }\n var result = (value + '');\n return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;\n }\n\n /**\n * Converts `func` to its source code.\n *\n * @private\n * @param {Function} func The function to convert.\n * @returns {string} Returns the source code.\n */\n function toSource(func) {\n if (func != null) {\n try {\n return funcToString.call(func);\n } catch (e) {}\n try {\n return (func + '');\n } catch (e) {}\n }\n return '';\n }\n\n /**\n * Updates wrapper `details` based on `bitmask` flags.\n *\n * @private\n * @returns {Array} details The details to modify.\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n * @returns {Array} Returns `details`.\n */\n function updateWrapDetails(details, bitmask) {\n arrayEach(wrapFlags, function(pair) {\n var value = '_.' + pair[0];\n if ((bitmask & pair[1]) && !arrayIncludes(details, value)) {\n details.push(value);\n }\n });\n return details.sort();\n }\n\n /**\n * Creates a clone of `wrapper`.\n *\n * @private\n * @param {Object} wrapper The wrapper to clone.\n * @returns {Object} Returns the cloned wrapper.\n */\n function wrapperClone(wrapper) {\n if (wrapper instanceof LazyWrapper) {\n return wrapper.clone();\n }\n var result = new LodashWrapper(wrapper.__wrapped__, wrapper.__chain__);\n result.__actions__ = copyArray(wrapper.__actions__);\n result.__index__ = wrapper.__index__;\n result.__values__ = wrapper.__values__;\n return result;\n }\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates an array of elements split into groups the length of `size`.\n * If `array` can't be split evenly, the final chunk will be the remaining\n * elements.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to process.\n * @param {number} [size=1] The length of each chunk\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the new array of chunks.\n * @example\n *\n * _.chunk(['a', 'b', 'c', 'd'], 2);\n * // => [['a', 'b'], ['c', 'd']]\n *\n * _.chunk(['a', 'b', 'c', 'd'], 3);\n * // => [['a', 'b', 'c'], ['d']]\n */\n function chunk(array, size, guard) {\n if ((guard ? isIterateeCall(array, size, guard) : size === undefined)) {\n size = 1;\n } else {\n size = nativeMax(toInteger(size), 0);\n }\n var length = array == null ? 0 : array.length;\n if (!length || size < 1) {\n return [];\n }\n var index = 0,\n resIndex = 0,\n result = Array(nativeCeil(length / size));\n\n while (index < length) {\n result[resIndex++] = baseSlice(array, index, (index += size));\n }\n return result;\n }\n\n /**\n * Creates an array with all falsey values removed. The values `false`, `null`,\n * `0`, `-0`, `0n`, `\"\"`, `undefined`, and `NaN` are falsy.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to compact.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * _.compact([0, 1, false, 2, '', 3]);\n * // => [1, 2, 3]\n */\n function compact(array) {\n var index = -1,\n length = array == null ? 0 : array.length,\n resIndex = 0,\n result = [];\n\n while (++index < length) {\n var value = array[index];\n if (value) {\n result[resIndex++] = value;\n }\n }\n return result;\n }\n\n /**\n * Creates a new array concatenating `array` with any additional arrays\n * and/or values.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to concatenate.\n * @param {...*} [values] The values to concatenate.\n * @returns {Array} Returns the new concatenated array.\n * @example\n *\n * var array = [1];\n * var other = _.concat(array, 2, [3], [[4]]);\n *\n * console.log(other);\n * // => [1, 2, 3, [4]]\n *\n * console.log(array);\n * // => [1]\n */\n function concat() {\n var length = arguments.length;\n if (!length) {\n return [];\n }\n var args = Array(length - 1),\n array = arguments[0],\n index = length;\n\n while (index--) {\n args[index - 1] = arguments[index];\n }\n return arrayPush(isArray(array) ? copyArray(array) : [array], baseFlatten(args, 1));\n }\n\n /**\n * Creates an array of `array` values not included in the other given arrays\n * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons. The order and references of result values are\n * determined by the first array.\n *\n * **Note:** Unlike `_.pullAll`, this method returns a new array.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {...Array} [values] The values to exclude.\n * @returns {Array} Returns the new array of filtered values.\n * @see _.without, _.xor\n * @example\n *\n * _.difference([2, 1], [2, 3]);\n * // => [1]\n */\n var difference = baseRest(function(array, values) {\n return isArrayLikeObject(array)\n ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true))\n : [];\n });\n\n /**\n * This method is like `_.difference` except that it accepts `iteratee` which\n * is invoked for each element of `array` and `values` to generate the criterion\n * by which they're compared. The order and references of result values are\n * determined by the first array. The iteratee is invoked with one argument:\n * (value).\n *\n * **Note:** Unlike `_.pullAllBy`, this method returns a new array.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {...Array} [values] The values to exclude.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * _.differenceBy([2.1, 1.2], [2.3, 3.4], Math.floor);\n * // => [1.2]\n *\n * // The `_.property` iteratee shorthand.\n * _.differenceBy([{ 'x': 2 }, { 'x': 1 }], [{ 'x': 1 }], 'x');\n * // => [{ 'x': 2 }]\n */\n var differenceBy = baseRest(function(array, values) {\n var iteratee = last(values);\n if (isArrayLikeObject(iteratee)) {\n iteratee = undefined;\n }\n return isArrayLikeObject(array)\n ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), getIteratee(iteratee, 2))\n : [];\n });\n\n /**\n * This method is like `_.difference` except that it accepts `comparator`\n * which is invoked to compare elements of `array` to `values`. The order and\n * references of result values are determined by the first array. The comparator\n * is invoked with two arguments: (arrVal, othVal).\n *\n * **Note:** Unlike `_.pullAllWith`, this method returns a new array.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {...Array} [values] The values to exclude.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n *\n * _.differenceWith(objects, [{ 'x': 1, 'y': 2 }], _.isEqual);\n * // => [{ 'x': 2, 'y': 1 }]\n */\n var differenceWith = baseRest(function(array, values) {\n var comparator = last(values);\n if (isArrayLikeObject(comparator)) {\n comparator = undefined;\n }\n return isArrayLikeObject(array)\n ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), undefined, comparator)\n : [];\n });\n\n /**\n * Creates a slice of `array` with `n` elements dropped from the beginning.\n *\n * @static\n * @memberOf _\n * @since 0.5.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=1] The number of elements to drop.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.drop([1, 2, 3]);\n * // => [2, 3]\n *\n * _.drop([1, 2, 3], 2);\n * // => [3]\n *\n * _.drop([1, 2, 3], 5);\n * // => []\n *\n * _.drop([1, 2, 3], 0);\n * // => [1, 2, 3]\n */\n function drop(array, n, guard) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return [];\n }\n n = (guard || n === undefined) ? 1 : toInteger(n);\n return baseSlice(array, n < 0 ? 0 : n, length);\n }\n\n /**\n * Creates a slice of `array` with `n` elements dropped from the end.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=1] The number of elements to drop.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.dropRight([1, 2, 3]);\n * // => [1, 2]\n *\n * _.dropRight([1, 2, 3], 2);\n * // => [1]\n *\n * _.dropRight([1, 2, 3], 5);\n * // => []\n *\n * _.dropRight([1, 2, 3], 0);\n * // => [1, 2, 3]\n */\n function dropRight(array, n, guard) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return [];\n }\n n = (guard || n === undefined) ? 1 : toInteger(n);\n n = length - n;\n return baseSlice(array, 0, n < 0 ? 0 : n);\n }\n\n /**\n * Creates a slice of `array` excluding elements dropped from the end.\n * Elements are dropped until `predicate` returns falsey. The predicate is\n * invoked with three arguments: (value, index, array).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'active': true },\n * { 'user': 'fred', 'active': false },\n * { 'user': 'pebbles', 'active': false }\n * ];\n *\n * _.dropRightWhile(users, function(o) { return !o.active; });\n * // => objects for ['barney']\n *\n * // The `_.matches` iteratee shorthand.\n * _.dropRightWhile(users, { 'user': 'pebbles', 'active': false });\n * // => objects for ['barney', 'fred']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.dropRightWhile(users, ['active', false]);\n * // => objects for ['barney']\n *\n * // The `_.property` iteratee shorthand.\n * _.dropRightWhile(users, 'active');\n * // => objects for ['barney', 'fred', 'pebbles']\n */\n function dropRightWhile(array, predicate) {\n return (array && array.length)\n ? baseWhile(array, getIteratee(predicate, 3), true, true)\n : [];\n }\n\n /**\n * Creates a slice of `array` excluding elements dropped from the beginning.\n * Elements are dropped until `predicate` returns falsey. The predicate is\n * invoked with three arguments: (value, index, array).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'active': false },\n * { 'user': 'fred', 'active': false },\n * { 'user': 'pebbles', 'active': true }\n * ];\n *\n * _.dropWhile(users, function(o) { return !o.active; });\n * // => objects for ['pebbles']\n *\n * // The `_.matches` iteratee shorthand.\n * _.dropWhile(users, { 'user': 'barney', 'active': false });\n * // => objects for ['fred', 'pebbles']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.dropWhile(users, ['active', false]);\n * // => objects for ['pebbles']\n *\n * // The `_.property` iteratee shorthand.\n * _.dropWhile(users, 'active');\n * // => objects for ['barney', 'fred', 'pebbles']\n */\n function dropWhile(array, predicate) {\n return (array && array.length)\n ? baseWhile(array, getIteratee(predicate, 3), true)\n : [];\n }\n\n /**\n * Fills elements of `array` with `value` from `start` up to, but not\n * including, `end`.\n *\n * **Note:** This method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 3.2.0\n * @category Array\n * @param {Array} array The array to fill.\n * @param {*} value The value to fill `array` with.\n * @param {number} [start=0] The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = [1, 2, 3];\n *\n * _.fill(array, 'a');\n * console.log(array);\n * // => ['a', 'a', 'a']\n *\n * _.fill(Array(3), 2);\n * // => [2, 2, 2]\n *\n * _.fill([4, 6, 8, 10], '*', 1, 3);\n * // => [4, '*', '*', 10]\n */\n function fill(array, value, start, end) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return [];\n }\n if (start && typeof start != 'number' && isIterateeCall(array, value, start)) {\n start = 0;\n end = length;\n }\n return baseFill(array, value, start, end);\n }\n\n /**\n * This method is like `_.find` except that it returns the index of the first\n * element `predicate` returns truthy for instead of the element itself.\n *\n * @static\n * @memberOf _\n * @since 1.1.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @param {number} [fromIndex=0] The index to search from.\n * @returns {number} Returns the index of the found element, else `-1`.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'active': false },\n * { 'user': 'fred', 'active': false },\n * { 'user': 'pebbles', 'active': true }\n * ];\n *\n * _.findIndex(users, function(o) { return o.user == 'barney'; });\n * // => 0\n *\n * // The `_.matches` iteratee shorthand.\n * _.findIndex(users, { 'user': 'fred', 'active': false });\n * // => 1\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.findIndex(users, ['active', false]);\n * // => 0\n *\n * // The `_.property` iteratee shorthand.\n * _.findIndex(users, 'active');\n * // => 2\n */\n function findIndex(array, predicate, fromIndex) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return -1;\n }\n var index = fromIndex == null ? 0 : toInteger(fromIndex);\n if (index < 0) {\n index = nativeMax(length + index, 0);\n }\n return baseFindIndex(array, getIteratee(predicate, 3), index);\n }\n\n /**\n * This method is like `_.findIndex` except that it iterates over elements\n * of `collection` from right to left.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @param {number} [fromIndex=array.length-1] The index to search from.\n * @returns {number} Returns the index of the found element, else `-1`.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'active': true },\n * { 'user': 'fred', 'active': false },\n * { 'user': 'pebbles', 'active': false }\n * ];\n *\n * _.findLastIndex(users, function(o) { return o.user == 'pebbles'; });\n * // => 2\n *\n * // The `_.matches` iteratee shorthand.\n * _.findLastIndex(users, { 'user': 'barney', 'active': true });\n * // => 0\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.findLastIndex(users, ['active', false]);\n * // => 2\n *\n * // The `_.property` iteratee shorthand.\n * _.findLastIndex(users, 'active');\n * // => 0\n */\n function findLastIndex(array, predicate, fromIndex) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return -1;\n }\n var index = length - 1;\n if (fromIndex !== undefined) {\n index = toInteger(fromIndex);\n index = fromIndex < 0\n ? nativeMax(length + index, 0)\n : nativeMin(index, length - 1);\n }\n return baseFindIndex(array, getIteratee(predicate, 3), index, true);\n }\n\n /**\n * Flattens `array` a single level deep.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to flatten.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * _.flatten([1, [2, [3, [4]], 5]]);\n * // => [1, 2, [3, [4]], 5]\n */\n function flatten(array) {\n var length = array == null ? 0 : array.length;\n return length ? baseFlatten(array, 1) : [];\n }\n\n /**\n * Recursively flattens `array`.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to flatten.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * _.flattenDeep([1, [2, [3, [4]], 5]]);\n * // => [1, 2, 3, 4, 5]\n */\n function flattenDeep(array) {\n var length = array == null ? 0 : array.length;\n return length ? baseFlatten(array, INFINITY) : [];\n }\n\n /**\n * Recursively flatten `array` up to `depth` times.\n *\n * @static\n * @memberOf _\n * @since 4.4.0\n * @category Array\n * @param {Array} array The array to flatten.\n * @param {number} [depth=1] The maximum recursion depth.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * var array = [1, [2, [3, [4]], 5]];\n *\n * _.flattenDepth(array, 1);\n * // => [1, 2, [3, [4]], 5]\n *\n * _.flattenDepth(array, 2);\n * // => [1, 2, 3, [4], 5]\n */\n function flattenDepth(array, depth) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return [];\n }\n depth = depth === undefined ? 1 : toInteger(depth);\n return baseFlatten(array, depth);\n }\n\n /**\n * The inverse of `_.toPairs`; this method returns an object composed\n * from key-value `pairs`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} pairs The key-value pairs.\n * @returns {Object} Returns the new object.\n * @example\n *\n * _.fromPairs([['a', 1], ['b', 2]]);\n * // => { 'a': 1, 'b': 2 }\n */\n function fromPairs(pairs) {\n var index = -1,\n length = pairs == null ? 0 : pairs.length,\n result = {};\n\n while (++index < length) {\n var pair = pairs[index];\n baseAssignValue(result, pair[0], pair[1]);\n }\n return result;\n }\n\n /**\n * Gets the first element of `array`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @alias first\n * @category Array\n * @param {Array} array The array to query.\n * @returns {*} Returns the first element of `array`.\n * @example\n *\n * _.head([1, 2, 3]);\n * // => 1\n *\n * _.head([]);\n * // => undefined\n */\n function head(array) {\n return (array && array.length) ? array[0] : undefined;\n }\n\n /**\n * Gets the index at which the first occurrence of `value` is found in `array`\n * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons. If `fromIndex` is negative, it's used as the\n * offset from the end of `array`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @param {number} [fromIndex=0] The index to search from.\n * @returns {number} Returns the index of the matched value, else `-1`.\n * @example\n *\n * _.indexOf([1, 2, 1, 2], 2);\n * // => 1\n *\n * // Search from the `fromIndex`.\n * _.indexOf([1, 2, 1, 2], 2, 2);\n * // => 3\n */\n function indexOf(array, value, fromIndex) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return -1;\n }\n var index = fromIndex == null ? 0 : toInteger(fromIndex);\n if (index < 0) {\n index = nativeMax(length + index, 0);\n }\n return baseIndexOf(array, value, index);\n }\n\n /**\n * Gets all but the last element of `array`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to query.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.initial([1, 2, 3]);\n * // => [1, 2]\n */\n function initial(array) {\n var length = array == null ? 0 : array.length;\n return length ? baseSlice(array, 0, -1) : [];\n }\n\n /**\n * Creates an array of unique values that are included in all given arrays\n * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons. The order and references of result values are\n * determined by the first array.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @returns {Array} Returns the new array of intersecting values.\n * @example\n *\n * _.intersection([2, 1], [2, 3]);\n * // => [2]\n */\n var intersection = baseRest(function(arrays) {\n var mapped = arrayMap(arrays, castArrayLikeObject);\n return (mapped.length && mapped[0] === arrays[0])\n ? baseIntersection(mapped)\n : [];\n });\n\n /**\n * This method is like `_.intersection` except that it accepts `iteratee`\n * which is invoked for each element of each `arrays` to generate the criterion\n * by which they're compared. The order and references of result values are\n * determined by the first array. The iteratee is invoked with one argument:\n * (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {Array} Returns the new array of intersecting values.\n * @example\n *\n * _.intersectionBy([2.1, 1.2], [2.3, 3.4], Math.floor);\n * // => [2.1]\n *\n * // The `_.property` iteratee shorthand.\n * _.intersectionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\n * // => [{ 'x': 1 }]\n */\n var intersectionBy = baseRest(function(arrays) {\n var iteratee = last(arrays),\n mapped = arrayMap(arrays, castArrayLikeObject);\n\n if (iteratee === last(mapped)) {\n iteratee = undefined;\n } else {\n mapped.pop();\n }\n return (mapped.length && mapped[0] === arrays[0])\n ? baseIntersection(mapped, getIteratee(iteratee, 2))\n : [];\n });\n\n /**\n * This method is like `_.intersection` except that it accepts `comparator`\n * which is invoked to compare elements of `arrays`. The order and references\n * of result values are determined by the first array. The comparator is\n * invoked with two arguments: (arrVal, othVal).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of intersecting values.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\n *\n * _.intersectionWith(objects, others, _.isEqual);\n * // => [{ 'x': 1, 'y': 2 }]\n */\n var intersectionWith = baseRest(function(arrays) {\n var comparator = last(arrays),\n mapped = arrayMap(arrays, castArrayLikeObject);\n\n comparator = typeof comparator == 'function' ? comparator : undefined;\n if (comparator) {\n mapped.pop();\n }\n return (mapped.length && mapped[0] === arrays[0])\n ? baseIntersection(mapped, undefined, comparator)\n : [];\n });\n\n /**\n * Converts all elements in `array` into a string separated by `separator`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to convert.\n * @param {string} [separator=','] The element separator.\n * @returns {string} Returns the joined string.\n * @example\n *\n * _.join(['a', 'b', 'c'], '~');\n * // => 'a~b~c'\n */\n function join(array, separator) {\n return array == null ? '' : nativeJoin.call(array, separator);\n }\n\n /**\n * Gets the last element of `array`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to query.\n * @returns {*} Returns the last element of `array`.\n * @example\n *\n * _.last([1, 2, 3]);\n * // => 3\n */\n function last(array) {\n var length = array == null ? 0 : array.length;\n return length ? array[length - 1] : undefined;\n }\n\n /**\n * This method is like `_.indexOf` except that it iterates over elements of\n * `array` from right to left.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @param {number} [fromIndex=array.length-1] The index to search from.\n * @returns {number} Returns the index of the matched value, else `-1`.\n * @example\n *\n * _.lastIndexOf([1, 2, 1, 2], 2);\n * // => 3\n *\n * // Search from the `fromIndex`.\n * _.lastIndexOf([1, 2, 1, 2], 2, 2);\n * // => 1\n */\n function lastIndexOf(array, value, fromIndex) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return -1;\n }\n var index = length;\n if (fromIndex !== undefined) {\n index = toInteger(fromIndex);\n index = index < 0 ? nativeMax(length + index, 0) : nativeMin(index, length - 1);\n }\n return value === value\n ? strictLastIndexOf(array, value, index)\n : baseFindIndex(array, baseIsNaN, index, true);\n }\n\n /**\n * Gets the element at index `n` of `array`. If `n` is negative, the nth\n * element from the end is returned.\n *\n * @static\n * @memberOf _\n * @since 4.11.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=0] The index of the element to return.\n * @returns {*} Returns the nth element of `array`.\n * @example\n *\n * var array = ['a', 'b', 'c', 'd'];\n *\n * _.nth(array, 1);\n * // => 'b'\n *\n * _.nth(array, -2);\n * // => 'c';\n */\n function nth(array, n) {\n return (array && array.length) ? baseNth(array, toInteger(n)) : undefined;\n }\n\n /**\n * Removes all given values from `array` using\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons.\n *\n * **Note:** Unlike `_.without`, this method mutates `array`. Use `_.remove`\n * to remove elements from an array by predicate.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {...*} [values] The values to remove.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = ['a', 'b', 'c', 'a', 'b', 'c'];\n *\n * _.pull(array, 'a', 'c');\n * console.log(array);\n * // => ['b', 'b']\n */\n var pull = baseRest(pullAll);\n\n /**\n * This method is like `_.pull` except that it accepts an array of values to remove.\n *\n * **Note:** Unlike `_.difference`, this method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {Array} values The values to remove.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = ['a', 'b', 'c', 'a', 'b', 'c'];\n *\n * _.pullAll(array, ['a', 'c']);\n * console.log(array);\n * // => ['b', 'b']\n */\n function pullAll(array, values) {\n return (array && array.length && values && values.length)\n ? basePullAll(array, values)\n : array;\n }\n\n /**\n * This method is like `_.pullAll` except that it accepts `iteratee` which is\n * invoked for each element of `array` and `values` to generate the criterion\n * by which they're compared. The iteratee is invoked with one argument: (value).\n *\n * **Note:** Unlike `_.differenceBy`, this method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {Array} values The values to remove.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = [{ 'x': 1 }, { 'x': 2 }, { 'x': 3 }, { 'x': 1 }];\n *\n * _.pullAllBy(array, [{ 'x': 1 }, { 'x': 3 }], 'x');\n * console.log(array);\n * // => [{ 'x': 2 }]\n */\n function pullAllBy(array, values, iteratee) {\n return (array && array.length && values && values.length)\n ? basePullAll(array, values, getIteratee(iteratee, 2))\n : array;\n }\n\n /**\n * This method is like `_.pullAll` except that it accepts `comparator` which\n * is invoked to compare elements of `array` to `values`. The comparator is\n * invoked with two arguments: (arrVal, othVal).\n *\n * **Note:** Unlike `_.differenceWith`, this method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 4.6.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {Array} values The values to remove.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = [{ 'x': 1, 'y': 2 }, { 'x': 3, 'y': 4 }, { 'x': 5, 'y': 6 }];\n *\n * _.pullAllWith(array, [{ 'x': 3, 'y': 4 }], _.isEqual);\n * console.log(array);\n * // => [{ 'x': 1, 'y': 2 }, { 'x': 5, 'y': 6 }]\n */\n function pullAllWith(array, values, comparator) {\n return (array && array.length && values && values.length)\n ? basePullAll(array, values, undefined, comparator)\n : array;\n }\n\n /**\n * Removes elements from `array` corresponding to `indexes` and returns an\n * array of removed elements.\n *\n * **Note:** Unlike `_.at`, this method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {...(number|number[])} [indexes] The indexes of elements to remove.\n * @returns {Array} Returns the new array of removed elements.\n * @example\n *\n * var array = ['a', 'b', 'c', 'd'];\n * var pulled = _.pullAt(array, [1, 3]);\n *\n * console.log(array);\n * // => ['a', 'c']\n *\n * console.log(pulled);\n * // => ['b', 'd']\n */\n var pullAt = flatRest(function(array, indexes) {\n var length = array == null ? 0 : array.length,\n result = baseAt(array, indexes);\n\n basePullAt(array, arrayMap(indexes, function(index) {\n return isIndex(index, length) ? +index : index;\n }).sort(compareAscending));\n\n return result;\n });\n\n /**\n * Removes all elements from `array` that `predicate` returns truthy for\n * and returns an array of the removed elements. The predicate is invoked\n * with three arguments: (value, index, array).\n *\n * **Note:** Unlike `_.filter`, this method mutates `array`. Use `_.pull`\n * to pull elements from an array by value.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the new array of removed elements.\n * @example\n *\n * var array = [1, 2, 3, 4];\n * var evens = _.remove(array, function(n) {\n * return n % 2 == 0;\n * });\n *\n * console.log(array);\n * // => [1, 3]\n *\n * console.log(evens);\n * // => [2, 4]\n */\n function remove(array, predicate) {\n var result = [];\n if (!(array && array.length)) {\n return result;\n }\n var index = -1,\n indexes = [],\n length = array.length;\n\n predicate = getIteratee(predicate, 3);\n while (++index < length) {\n var value = array[index];\n if (predicate(value, index, array)) {\n result.push(value);\n indexes.push(index);\n }\n }\n basePullAt(array, indexes);\n return result;\n }\n\n /**\n * Reverses `array` so that the first element becomes the last, the second\n * element becomes the second to last, and so on.\n *\n * **Note:** This method mutates `array` and is based on\n * [`Array#reverse`](https://mdn.io/Array/reverse).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = [1, 2, 3];\n *\n * _.reverse(array);\n * // => [3, 2, 1]\n *\n * console.log(array);\n * // => [3, 2, 1]\n */\n function reverse(array) {\n return array == null ? array : nativeReverse.call(array);\n }\n\n /**\n * Creates a slice of `array` from `start` up to, but not including, `end`.\n *\n * **Note:** This method is used instead of\n * [`Array#slice`](https://mdn.io/Array/slice) to ensure dense arrays are\n * returned.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to slice.\n * @param {number} [start=0] The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns the slice of `array`.\n */\n function slice(array, start, end) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return [];\n }\n if (end && typeof end != 'number' && isIterateeCall(array, start, end)) {\n start = 0;\n end = length;\n }\n else {\n start = start == null ? 0 : toInteger(start);\n end = end === undefined ? length : toInteger(end);\n }\n return baseSlice(array, start, end);\n }\n\n /**\n * Uses a binary search to determine the lowest index at which `value`\n * should be inserted into `array` in order to maintain its sort order.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @returns {number} Returns the index at which `value` should be inserted\n * into `array`.\n * @example\n *\n * _.sortedIndex([30, 50], 40);\n * // => 1\n */\n function sortedIndex(array, value) {\n return baseSortedIndex(array, value);\n }\n\n /**\n * This method is like `_.sortedIndex` except that it accepts `iteratee`\n * which is invoked for `value` and each element of `array` to compute their\n * sort ranking. The iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {number} Returns the index at which `value` should be inserted\n * into `array`.\n * @example\n *\n * var objects = [{ 'x': 4 }, { 'x': 5 }];\n *\n * _.sortedIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });\n * // => 0\n *\n * // The `_.property` iteratee shorthand.\n * _.sortedIndexBy(objects, { 'x': 4 }, 'x');\n * // => 0\n */\n function sortedIndexBy(array, value, iteratee) {\n return baseSortedIndexBy(array, value, getIteratee(iteratee, 2));\n }\n\n /**\n * This method is like `_.indexOf` except that it performs a binary\n * search on a sorted `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @returns {number} Returns the index of the matched value, else `-1`.\n * @example\n *\n * _.sortedIndexOf([4, 5, 5, 5, 6], 5);\n * // => 1\n */\n function sortedIndexOf(array, value) {\n var length = array == null ? 0 : array.length;\n if (length) {\n var index = baseSortedIndex(array, value);\n if (index < length && eq(array[index], value)) {\n return index;\n }\n }\n return -1;\n }\n\n /**\n * This method is like `_.sortedIndex` except that it returns the highest\n * index at which `value` should be inserted into `array` in order to\n * maintain its sort order.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @returns {number} Returns the index at which `value` should be inserted\n * into `array`.\n * @example\n *\n * _.sortedLastIndex([4, 5, 5, 5, 6], 5);\n * // => 4\n */\n function sortedLastIndex(array, value) {\n return baseSortedIndex(array, value, true);\n }\n\n /**\n * This method is like `_.sortedLastIndex` except that it accepts `iteratee`\n * which is invoked for `value` and each element of `array` to compute their\n * sort ranking. The iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {number} Returns the index at which `value` should be inserted\n * into `array`.\n * @example\n *\n * var objects = [{ 'x': 4 }, { 'x': 5 }];\n *\n * _.sortedLastIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });\n * // => 1\n *\n * // The `_.property` iteratee shorthand.\n * _.sortedLastIndexBy(objects, { 'x': 4 }, 'x');\n * // => 1\n */\n function sortedLastIndexBy(array, value, iteratee) {\n return baseSortedIndexBy(array, value, getIteratee(iteratee, 2), true);\n }\n\n /**\n * This method is like `_.lastIndexOf` except that it performs a binary\n * search on a sorted `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @returns {number} Returns the index of the matched value, else `-1`.\n * @example\n *\n * _.sortedLastIndexOf([4, 5, 5, 5, 6], 5);\n * // => 3\n */\n function sortedLastIndexOf(array, value) {\n var length = array == null ? 0 : array.length;\n if (length) {\n var index = baseSortedIndex(array, value, true) - 1;\n if (eq(array[index], value)) {\n return index;\n }\n }\n return -1;\n }\n\n /**\n * This method is like `_.uniq` except that it's designed and optimized\n * for sorted arrays.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * _.sortedUniq([1, 1, 2]);\n * // => [1, 2]\n */\n function sortedUniq(array) {\n return (array && array.length)\n ? baseSortedUniq(array)\n : [];\n }\n\n /**\n * This method is like `_.uniqBy` except that it's designed and optimized\n * for sorted arrays.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * _.sortedUniqBy([1.1, 1.2, 2.3, 2.4], Math.floor);\n * // => [1.1, 2.3]\n */\n function sortedUniqBy(array, iteratee) {\n return (array && array.length)\n ? baseSortedUniq(array, getIteratee(iteratee, 2))\n : [];\n }\n\n /**\n * Gets all but the first element of `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.tail([1, 2, 3]);\n * // => [2, 3]\n */\n function tail(array) {\n var length = array == null ? 0 : array.length;\n return length ? baseSlice(array, 1, length) : [];\n }\n\n /**\n * Creates a slice of `array` with `n` elements taken from the beginning.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=1] The number of elements to take.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.take([1, 2, 3]);\n * // => [1]\n *\n * _.take([1, 2, 3], 2);\n * // => [1, 2]\n *\n * _.take([1, 2, 3], 5);\n * // => [1, 2, 3]\n *\n * _.take([1, 2, 3], 0);\n * // => []\n */\n function take(array, n, guard) {\n if (!(array && array.length)) {\n return [];\n }\n n = (guard || n === undefined) ? 1 : toInteger(n);\n return baseSlice(array, 0, n < 0 ? 0 : n);\n }\n\n /**\n * Creates a slice of `array` with `n` elements taken from the end.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=1] The number of elements to take.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.takeRight([1, 2, 3]);\n * // => [3]\n *\n * _.takeRight([1, 2, 3], 2);\n * // => [2, 3]\n *\n * _.takeRight([1, 2, 3], 5);\n * // => [1, 2, 3]\n *\n * _.takeRight([1, 2, 3], 0);\n * // => []\n */\n function takeRight(array, n, guard) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return [];\n }\n n = (guard || n === undefined) ? 1 : toInteger(n);\n n = length - n;\n return baseSlice(array, n < 0 ? 0 : n, length);\n }\n\n /**\n * Creates a slice of `array` with elements taken from the end. Elements are\n * taken until `predicate` returns falsey. The predicate is invoked with\n * three arguments: (value, index, array).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'active': true },\n * { 'user': 'fred', 'active': false },\n * { 'user': 'pebbles', 'active': false }\n * ];\n *\n * _.takeRightWhile(users, function(o) { return !o.active; });\n * // => objects for ['fred', 'pebbles']\n *\n * // The `_.matches` iteratee shorthand.\n * _.takeRightWhile(users, { 'user': 'pebbles', 'active': false });\n * // => objects for ['pebbles']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.takeRightWhile(users, ['active', false]);\n * // => objects for ['fred', 'pebbles']\n *\n * // The `_.property` iteratee shorthand.\n * _.takeRightWhile(users, 'active');\n * // => []\n */\n function takeRightWhile(array, predicate) {\n return (array && array.length)\n ? baseWhile(array, getIteratee(predicate, 3), false, true)\n : [];\n }\n\n /**\n * Creates a slice of `array` with elements taken from the beginning. Elements\n * are taken until `predicate` returns falsey. The predicate is invoked with\n * three arguments: (value, index, array).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'active': false },\n * { 'user': 'fred', 'active': false },\n * { 'user': 'pebbles', 'active': true }\n * ];\n *\n * _.takeWhile(users, function(o) { return !o.active; });\n * // => objects for ['barney', 'fred']\n *\n * // The `_.matches` iteratee shorthand.\n * _.takeWhile(users, { 'user': 'barney', 'active': false });\n * // => objects for ['barney']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.takeWhile(users, ['active', false]);\n * // => objects for ['barney', 'fred']\n *\n * // The `_.property` iteratee shorthand.\n * _.takeWhile(users, 'active');\n * // => []\n */\n function takeWhile(array, predicate) {\n return (array && array.length)\n ? baseWhile(array, getIteratee(predicate, 3))\n : [];\n }\n\n /**\n * Creates an array of unique values, in order, from all given arrays using\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @returns {Array} Returns the new array of combined values.\n * @example\n *\n * _.union([2], [1, 2]);\n * // => [2, 1]\n */\n var union = baseRest(function(arrays) {\n return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true));\n });\n\n /**\n * This method is like `_.union` except that it accepts `iteratee` which is\n * invoked for each element of each `arrays` to generate the criterion by\n * which uniqueness is computed. Result values are chosen from the first\n * array in which the value occurs. The iteratee is invoked with one argument:\n * (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {Array} Returns the new array of combined values.\n * @example\n *\n * _.unionBy([2.1], [1.2, 2.3], Math.floor);\n * // => [2.1, 1.2]\n *\n * // The `_.property` iteratee shorthand.\n * _.unionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\n * // => [{ 'x': 1 }, { 'x': 2 }]\n */\n var unionBy = baseRest(function(arrays) {\n var iteratee = last(arrays);\n if (isArrayLikeObject(iteratee)) {\n iteratee = undefined;\n }\n return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), getIteratee(iteratee, 2));\n });\n\n /**\n * This method is like `_.union` except that it accepts `comparator` which\n * is invoked to compare elements of `arrays`. Result values are chosen from\n * the first array in which the value occurs. The comparator is invoked\n * with two arguments: (arrVal, othVal).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of combined values.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\n *\n * _.unionWith(objects, others, _.isEqual);\n * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]\n */\n var unionWith = baseRest(function(arrays) {\n var comparator = last(arrays);\n comparator = typeof comparator == 'function' ? comparator : undefined;\n return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), undefined, comparator);\n });\n\n /**\n * Creates a duplicate-free version of an array, using\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons, in which only the first occurrence of each element\n * is kept. The order of result values is determined by the order they occur\n * in the array.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * _.uniq([2, 1, 2]);\n * // => [2, 1]\n */\n function uniq(array) {\n return (array && array.length) ? baseUniq(array) : [];\n }\n\n /**\n * This method is like `_.uniq` except that it accepts `iteratee` which is\n * invoked for each element in `array` to generate the criterion by which\n * uniqueness is computed. The order of result values is determined by the\n * order they occur in the array. The iteratee is invoked with one argument:\n * (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * _.uniqBy([2.1, 1.2, 2.3], Math.floor);\n * // => [2.1, 1.2]\n *\n * // The `_.property` iteratee shorthand.\n * _.uniqBy([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x');\n * // => [{ 'x': 1 }, { 'x': 2 }]\n */\n function uniqBy(array, iteratee) {\n return (array && array.length) ? baseUniq(array, getIteratee(iteratee, 2)) : [];\n }\n\n /**\n * This method is like `_.uniq` except that it accepts `comparator` which\n * is invoked to compare elements of `array`. The order of result values is\n * determined by the order they occur in the array.The comparator is invoked\n * with two arguments: (arrVal, othVal).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 2 }];\n *\n * _.uniqWith(objects, _.isEqual);\n * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]\n */\n function uniqWith(array, comparator) {\n comparator = typeof comparator == 'function' ? comparator : undefined;\n return (array && array.length) ? baseUniq(array, undefined, comparator) : [];\n }\n\n /**\n * This method is like `_.zip` except that it accepts an array of grouped\n * elements and creates an array regrouping the elements to their pre-zip\n * configuration.\n *\n * @static\n * @memberOf _\n * @since 1.2.0\n * @category Array\n * @param {Array} array The array of grouped elements to process.\n * @returns {Array} Returns the new array of regrouped elements.\n * @example\n *\n * var zipped = _.zip(['a', 'b'], [1, 2], [true, false]);\n * // => [['a', 1, true], ['b', 2, false]]\n *\n * _.unzip(zipped);\n * // => [['a', 'b'], [1, 2], [true, false]]\n */\n function unzip(array) {\n if (!(array && array.length)) {\n return [];\n }\n var length = 0;\n array = arrayFilter(array, function(group) {\n if (isArrayLikeObject(group)) {\n length = nativeMax(group.length, length);\n return true;\n }\n });\n return baseTimes(length, function(index) {\n return arrayMap(array, baseProperty(index));\n });\n }\n\n /**\n * This method is like `_.unzip` except that it accepts `iteratee` to specify\n * how regrouped values should be combined. The iteratee is invoked with the\n * elements of each group: (...group).\n *\n * @static\n * @memberOf _\n * @since 3.8.0\n * @category Array\n * @param {Array} array The array of grouped elements to process.\n * @param {Function} [iteratee=_.identity] The function to combine\n * regrouped values.\n * @returns {Array} Returns the new array of regrouped elements.\n * @example\n *\n * var zipped = _.zip([1, 2], [10, 20], [100, 200]);\n * // => [[1, 10, 100], [2, 20, 200]]\n *\n * _.unzipWith(zipped, _.add);\n * // => [3, 30, 300]\n */\n function unzipWith(array, iteratee) {\n if (!(array && array.length)) {\n return [];\n }\n var result = unzip(array);\n if (iteratee == null) {\n return result;\n }\n return arrayMap(result, function(group) {\n return apply(iteratee, undefined, group);\n });\n }\n\n /**\n * Creates an array excluding all given values using\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons.\n *\n * **Note:** Unlike `_.pull`, this method returns a new array.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {...*} [values] The values to exclude.\n * @returns {Array} Returns the new array of filtered values.\n * @see _.difference, _.xor\n * @example\n *\n * _.without([2, 1, 2, 3], 1, 2);\n * // => [3]\n */\n var without = baseRest(function(array, values) {\n return isArrayLikeObject(array)\n ? baseDifference(array, values)\n : [];\n });\n\n /**\n * Creates an array of unique values that is the\n * [symmetric difference](https://en.wikipedia.org/wiki/Symmetric_difference)\n * of the given arrays. The order of result values is determined by the order\n * they occur in the arrays.\n *\n * @static\n * @memberOf _\n * @since 2.4.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @returns {Array} Returns the new array of filtered values.\n * @see _.difference, _.without\n * @example\n *\n * _.xor([2, 1], [2, 3]);\n * // => [1, 3]\n */\n var xor = baseRest(function(arrays) {\n return baseXor(arrayFilter(arrays, isArrayLikeObject));\n });\n\n /**\n * This method is like `_.xor` except that it accepts `iteratee` which is\n * invoked for each element of each `arrays` to generate the criterion by\n * which by which they're compared. The order of result values is determined\n * by the order they occur in the arrays. The iteratee is invoked with one\n * argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * _.xorBy([2.1, 1.2], [2.3, 3.4], Math.floor);\n * // => [1.2, 3.4]\n *\n * // The `_.property` iteratee shorthand.\n * _.xorBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\n * // => [{ 'x': 2 }]\n */\n var xorBy = baseRest(function(arrays) {\n var iteratee = last(arrays);\n if (isArrayLikeObject(iteratee)) {\n iteratee = undefined;\n }\n return baseXor(arrayFilter(arrays, isArrayLikeObject), getIteratee(iteratee, 2));\n });\n\n /**\n * This method is like `_.xor` except that it accepts `comparator` which is\n * invoked to compare elements of `arrays`. The order of result values is\n * determined by the order they occur in the arrays. The comparator is invoked\n * with two arguments: (arrVal, othVal).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\n *\n * _.xorWith(objects, others, _.isEqual);\n * // => [{ 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]\n */\n var xorWith = baseRest(function(arrays) {\n var comparator = last(arrays);\n comparator = typeof comparator == 'function' ? comparator : undefined;\n return baseXor(arrayFilter(arrays, isArrayLikeObject), undefined, comparator);\n });\n\n /**\n * Creates an array of grouped elements, the first of which contains the\n * first elements of the given arrays, the second of which contains the\n * second elements of the given arrays, and so on.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {...Array} [arrays] The arrays to process.\n * @returns {Array} Returns the new array of grouped elements.\n * @example\n *\n * _.zip(['a', 'b'], [1, 2], [true, false]);\n * // => [['a', 1, true], ['b', 2, false]]\n */\n var zip = baseRest(unzip);\n\n /**\n * This method is like `_.fromPairs` except that it accepts two arrays,\n * one of property identifiers and one of corresponding values.\n *\n * @static\n * @memberOf _\n * @since 0.4.0\n * @category Array\n * @param {Array} [props=[]] The property identifiers.\n * @param {Array} [values=[]] The property values.\n * @returns {Object} Returns the new object.\n * @example\n *\n * _.zipObject(['a', 'b'], [1, 2]);\n * // => { 'a': 1, 'b': 2 }\n */\n function zipObject(props, values) {\n return baseZipObject(props || [], values || [], assignValue);\n }\n\n /**\n * This method is like `_.zipObject` except that it supports property paths.\n *\n * @static\n * @memberOf _\n * @since 4.1.0\n * @category Array\n * @param {Array} [props=[]] The property identifiers.\n * @param {Array} [values=[]] The property values.\n * @returns {Object} Returns the new object.\n * @example\n *\n * _.zipObjectDeep(['a.b[0].c', 'a.b[1].d'], [1, 2]);\n * // => { 'a': { 'b': [{ 'c': 1 }, { 'd': 2 }] } }\n */\n function zipObjectDeep(props, values) {\n return baseZipObject(props || [], values || [], baseSet);\n }\n\n /**\n * This method is like `_.zip` except that it accepts `iteratee` to specify\n * how grouped values should be combined. The iteratee is invoked with the\n * elements of each group: (...group).\n *\n * @static\n * @memberOf _\n * @since 3.8.0\n * @category Array\n * @param {...Array} [arrays] The arrays to process.\n * @param {Function} [iteratee=_.identity] The function to combine\n * grouped values.\n * @returns {Array} Returns the new array of grouped elements.\n * @example\n *\n * _.zipWith([1, 2], [10, 20], [100, 200], function(a, b, c) {\n * return a + b + c;\n * });\n * // => [111, 222]\n */\n var zipWith = baseRest(function(arrays) {\n var length = arrays.length,\n iteratee = length > 1 ? arrays[length - 1] : undefined;\n\n iteratee = typeof iteratee == 'function' ? (arrays.pop(), iteratee) : undefined;\n return unzipWith(arrays, iteratee);\n });\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates a `lodash` wrapper instance that wraps `value` with explicit method\n * chain sequences enabled. The result of such sequences must be unwrapped\n * with `_#value`.\n *\n * @static\n * @memberOf _\n * @since 1.3.0\n * @category Seq\n * @param {*} value The value to wrap.\n * @returns {Object} Returns the new `lodash` wrapper instance.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'age': 36 },\n * { 'user': 'fred', 'age': 40 },\n * { 'user': 'pebbles', 'age': 1 }\n * ];\n *\n * var youngest = _\n * .chain(users)\n * .sortBy('age')\n * .map(function(o) {\n * return o.user + ' is ' + o.age;\n * })\n * .head()\n * .value();\n * // => 'pebbles is 1'\n */\n function chain(value) {\n var result = lodash(value);\n result.__chain__ = true;\n return result;\n }\n\n /**\n * This method invokes `interceptor` and returns `value`. The interceptor\n * is invoked with one argument; (value). The purpose of this method is to\n * \"tap into\" a method chain sequence in order to modify intermediate results.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Seq\n * @param {*} value The value to provide to `interceptor`.\n * @param {Function} interceptor The function to invoke.\n * @returns {*} Returns `value`.\n * @example\n *\n * _([1, 2, 3])\n * .tap(function(array) {\n * // Mutate input array.\n * array.pop();\n * })\n * .reverse()\n * .value();\n * // => [2, 1]\n */\n function tap(value, interceptor) {\n interceptor(value);\n return value;\n }\n\n /**\n * This method is like `_.tap` except that it returns the result of `interceptor`.\n * The purpose of this method is to \"pass thru\" values replacing intermediate\n * results in a method chain sequence.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Seq\n * @param {*} value The value to provide to `interceptor`.\n * @param {Function} interceptor The function to invoke.\n * @returns {*} Returns the result of `interceptor`.\n * @example\n *\n * _(' abc ')\n * .chain()\n * .trim()\n * .thru(function(value) {\n * return [value];\n * })\n * .value();\n * // => ['abc']\n */\n function thru(value, interceptor) {\n return interceptor(value);\n }\n\n /**\n * This method is the wrapper version of `_.at`.\n *\n * @name at\n * @memberOf _\n * @since 1.0.0\n * @category Seq\n * @param {...(string|string[])} [paths] The property paths to pick.\n * @returns {Object} Returns the new `lodash` wrapper instance.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };\n *\n * _(object).at(['a[0].b.c', 'a[1]']).value();\n * // => [3, 4]\n */\n var wrapperAt = flatRest(function(paths) {\n var length = paths.length,\n start = length ? paths[0] : 0,\n value = this.__wrapped__,\n interceptor = function(object) { return baseAt(object, paths); };\n\n if (length > 1 || this.__actions__.length ||\n !(value instanceof LazyWrapper) || !isIndex(start)) {\n return this.thru(interceptor);\n }\n value = value.slice(start, +start + (length ? 1 : 0));\n value.__actions__.push({\n 'func': thru,\n 'args': [interceptor],\n 'thisArg': undefined\n });\n return new LodashWrapper(value, this.__chain__).thru(function(array) {\n if (length && !array.length) {\n array.push(undefined);\n }\n return array;\n });\n });\n\n /**\n * Creates a `lodash` wrapper instance with explicit method chain sequences enabled.\n *\n * @name chain\n * @memberOf _\n * @since 0.1.0\n * @category Seq\n * @returns {Object} Returns the new `lodash` wrapper instance.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'age': 36 },\n * { 'user': 'fred', 'age': 40 }\n * ];\n *\n * // A sequence without explicit chaining.\n * _(users).head();\n * // => { 'user': 'barney', 'age': 36 }\n *\n * // A sequence with explicit chaining.\n * _(users)\n * .chain()\n * .head()\n * .pick('user')\n * .value();\n * // => { 'user': 'barney' }\n */\n function wrapperChain() {\n return chain(this);\n }\n\n /**\n * Executes the chain sequence and returns the wrapped result.\n *\n * @name commit\n * @memberOf _\n * @since 3.2.0\n * @category Seq\n * @returns {Object} Returns the new `lodash` wrapper instance.\n * @example\n *\n * var array = [1, 2];\n * var wrapped = _(array).push(3);\n *\n * console.log(array);\n * // => [1, 2]\n *\n * wrapped = wrapped.commit();\n * console.log(array);\n * // => [1, 2, 3]\n *\n * wrapped.last();\n * // => 3\n *\n * console.log(array);\n * // => [1, 2, 3]\n */\n function wrapperCommit() {\n return new LodashWrapper(this.value(), this.__chain__);\n }\n\n /**\n * Gets the next value on a wrapped object following the\n * [iterator protocol](https://mdn.io/iteration_protocols#iterator).\n *\n * @name next\n * @memberOf _\n * @since 4.0.0\n * @category Seq\n * @returns {Object} Returns the next iterator value.\n * @example\n *\n * var wrapped = _([1, 2]);\n *\n * wrapped.next();\n * // => { 'done': false, 'value': 1 }\n *\n * wrapped.next();\n * // => { 'done': false, 'value': 2 }\n *\n * wrapped.next();\n * // => { 'done': true, 'value': undefined }\n */\n function wrapperNext() {\n if (this.__values__ === undefined) {\n this.__values__ = toArray(this.value());\n }\n var done = this.__index__ >= this.__values__.length,\n value = done ? undefined : this.__values__[this.__index__++];\n\n return { 'done': done, 'value': value };\n }\n\n /**\n * Enables the wrapper to be iterable.\n *\n * @name Symbol.iterator\n * @memberOf _\n * @since 4.0.0\n * @category Seq\n * @returns {Object} Returns the wrapper object.\n * @example\n *\n * var wrapped = _([1, 2]);\n *\n * wrapped[Symbol.iterator]() === wrapped;\n * // => true\n *\n * Array.from(wrapped);\n * // => [1, 2]\n */\n function wrapperToIterator() {\n return this;\n }\n\n /**\n * Creates a clone of the chain sequence planting `value` as the wrapped value.\n *\n * @name plant\n * @memberOf _\n * @since 3.2.0\n * @category Seq\n * @param {*} value The value to plant.\n * @returns {Object} Returns the new `lodash` wrapper instance.\n * @example\n *\n * function square(n) {\n * return n * n;\n * }\n *\n * var wrapped = _([1, 2]).map(square);\n * var other = wrapped.plant([3, 4]);\n *\n * other.value();\n * // => [9, 16]\n *\n * wrapped.value();\n * // => [1, 4]\n */\n function wrapperPlant(value) {\n var result,\n parent = this;\n\n while (parent instanceof baseLodash) {\n var clone = wrapperClone(parent);\n clone.__index__ = 0;\n clone.__values__ = undefined;\n if (result) {\n previous.__wrapped__ = clone;\n } else {\n result = clone;\n }\n var previous = clone;\n parent = parent.__wrapped__;\n }\n previous.__wrapped__ = value;\n return result;\n }\n\n /**\n * This method is the wrapper version of `_.reverse`.\n *\n * **Note:** This method mutates the wrapped array.\n *\n * @name reverse\n * @memberOf _\n * @since 0.1.0\n * @category Seq\n * @returns {Object} Returns the new `lodash` wrapper instance.\n * @example\n *\n * var array = [1, 2, 3];\n *\n * _(array).reverse().value()\n * // => [3, 2, 1]\n *\n * console.log(array);\n * // => [3, 2, 1]\n */\n function wrapperReverse() {\n var value = this.__wrapped__;\n if (value instanceof LazyWrapper) {\n var wrapped = value;\n if (this.__actions__.length) {\n wrapped = new LazyWrapper(this);\n }\n wrapped = wrapped.reverse();\n wrapped.__actions__.push({\n 'func': thru,\n 'args': [reverse],\n 'thisArg': undefined\n });\n return new LodashWrapper(wrapped, this.__chain__);\n }\n return this.thru(reverse);\n }\n\n /**\n * Executes the chain sequence to resolve the unwrapped value.\n *\n * @name value\n * @memberOf _\n * @since 0.1.0\n * @alias toJSON, valueOf\n * @category Seq\n * @returns {*} Returns the resolved unwrapped value.\n * @example\n *\n * _([1, 2, 3]).value();\n * // => [1, 2, 3]\n */\n function wrapperValue() {\n return baseWrapperValue(this.__wrapped__, this.__actions__);\n }\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates an object composed of keys generated from the results of running\n * each element of `collection` thru `iteratee`. The corresponding value of\n * each key is the number of times the key was returned by `iteratee`. The\n * iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 0.5.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The iteratee to transform keys.\n * @returns {Object} Returns the composed aggregate object.\n * @example\n *\n * _.countBy([6.1, 4.2, 6.3], Math.floor);\n * // => { '4': 1, '6': 2 }\n *\n * // The `_.property` iteratee shorthand.\n * _.countBy(['one', 'two', 'three'], 'length');\n * // => { '3': 2, '5': 1 }\n */\n var countBy = createAggregator(function(result, value, key) {\n if (hasOwnProperty.call(result, key)) {\n ++result[key];\n } else {\n baseAssignValue(result, key, 1);\n }\n });\n\n /**\n * Checks if `predicate` returns truthy for **all** elements of `collection`.\n * Iteration is stopped once `predicate` returns falsey. The predicate is\n * invoked with three arguments: (value, index|key, collection).\n *\n * **Note:** This method returns `true` for\n * [empty collections](https://en.wikipedia.org/wiki/Empty_set) because\n * [everything is true](https://en.wikipedia.org/wiki/Vacuous_truth) of\n * elements of empty collections.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {boolean} Returns `true` if all elements pass the predicate check,\n * else `false`.\n * @example\n *\n * _.every([true, 1, null, 'yes'], Boolean);\n * // => false\n *\n * var users = [\n * { 'user': 'barney', 'age': 36, 'active': false },\n * { 'user': 'fred', 'age': 40, 'active': false }\n * ];\n *\n * // The `_.matches` iteratee shorthand.\n * _.every(users, { 'user': 'barney', 'active': false });\n * // => false\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.every(users, ['active', false]);\n * // => true\n *\n * // The `_.property` iteratee shorthand.\n * _.every(users, 'active');\n * // => false\n */\n function every(collection, predicate, guard) {\n var func = isArray(collection) ? arrayEvery : baseEvery;\n if (guard && isIterateeCall(collection, predicate, guard)) {\n predicate = undefined;\n }\n return func(collection, getIteratee(predicate, 3));\n }\n\n /**\n * Iterates over elements of `collection`, returning an array of all elements\n * `predicate` returns truthy for. The predicate is invoked with three\n * arguments: (value, index|key, collection).\n *\n * **Note:** Unlike `_.remove`, this method returns a new array.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the new filtered array.\n * @see _.reject\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'age': 36, 'active': true },\n * { 'user': 'fred', 'age': 40, 'active': false }\n * ];\n *\n * _.filter(users, function(o) { return !o.active; });\n * // => objects for ['fred']\n *\n * // The `_.matches` iteratee shorthand.\n * _.filter(users, { 'age': 36, 'active': true });\n * // => objects for ['barney']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.filter(users, ['active', false]);\n * // => objects for ['fred']\n *\n * // The `_.property` iteratee shorthand.\n * _.filter(users, 'active');\n * // => objects for ['barney']\n *\n * // Combining several predicates using `_.overEvery` or `_.overSome`.\n * _.filter(users, _.overSome([{ 'age': 36 }, ['age', 40]]));\n * // => objects for ['fred', 'barney']\n */\n function filter(collection, predicate) {\n var func = isArray(collection) ? arrayFilter : baseFilter;\n return func(collection, getIteratee(predicate, 3));\n }\n\n /**\n * Iterates over elements of `collection`, returning the first element\n * `predicate` returns truthy for. The predicate is invoked with three\n * arguments: (value, index|key, collection).\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to inspect.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @param {number} [fromIndex=0] The index to search from.\n * @returns {*} Returns the matched element, else `undefined`.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'age': 36, 'active': true },\n * { 'user': 'fred', 'age': 40, 'active': false },\n * { 'user': 'pebbles', 'age': 1, 'active': true }\n * ];\n *\n * _.find(users, function(o) { return o.age < 40; });\n * // => object for 'barney'\n *\n * // The `_.matches` iteratee shorthand.\n * _.find(users, { 'age': 1, 'active': true });\n * // => object for 'pebbles'\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.find(users, ['active', false]);\n * // => object for 'fred'\n *\n * // The `_.property` iteratee shorthand.\n * _.find(users, 'active');\n * // => object for 'barney'\n */\n var find = createFind(findIndex);\n\n /**\n * This method is like `_.find` except that it iterates over elements of\n * `collection` from right to left.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to inspect.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @param {number} [fromIndex=collection.length-1] The index to search from.\n * @returns {*} Returns the matched element, else `undefined`.\n * @example\n *\n * _.findLast([1, 2, 3, 4], function(n) {\n * return n % 2 == 1;\n * });\n * // => 3\n */\n var findLast = createFind(findLastIndex);\n\n /**\n * Creates a flattened array of values by running each element in `collection`\n * thru `iteratee` and flattening the mapped results. The iteratee is invoked\n * with three arguments: (value, index|key, collection).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * function duplicate(n) {\n * return [n, n];\n * }\n *\n * _.flatMap([1, 2], duplicate);\n * // => [1, 1, 2, 2]\n */\n function flatMap(collection, iteratee) {\n return baseFlatten(map(collection, iteratee), 1);\n }\n\n /**\n * This method is like `_.flatMap` except that it recursively flattens the\n * mapped results.\n *\n * @static\n * @memberOf _\n * @since 4.7.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * function duplicate(n) {\n * return [[[n, n]]];\n * }\n *\n * _.flatMapDeep([1, 2], duplicate);\n * // => [1, 1, 2, 2]\n */\n function flatMapDeep(collection, iteratee) {\n return baseFlatten(map(collection, iteratee), INFINITY);\n }\n\n /**\n * This method is like `_.flatMap` except that it recursively flattens the\n * mapped results up to `depth` times.\n *\n * @static\n * @memberOf _\n * @since 4.7.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @param {number} [depth=1] The maximum recursion depth.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * function duplicate(n) {\n * return [[[n, n]]];\n * }\n *\n * _.flatMapDepth([1, 2], duplicate, 2);\n * // => [[1, 1], [2, 2]]\n */\n function flatMapDepth(collection, iteratee, depth) {\n depth = depth === undefined ? 1 : toInteger(depth);\n return baseFlatten(map(collection, iteratee), depth);\n }\n\n /**\n * Iterates over elements of `collection` and invokes `iteratee` for each element.\n * The iteratee is invoked with three arguments: (value, index|key, collection).\n * Iteratee functions may exit iteration early by explicitly returning `false`.\n *\n * **Note:** As with other \"Collections\" methods, objects with a \"length\"\n * property are iterated like arrays. To avoid this behavior use `_.forIn`\n * or `_.forOwn` for object iteration.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @alias each\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Array|Object} Returns `collection`.\n * @see _.forEachRight\n * @example\n *\n * _.forEach([1, 2], function(value) {\n * console.log(value);\n * });\n * // => Logs `1` then `2`.\n *\n * _.forEach({ 'a': 1, 'b': 2 }, function(value, key) {\n * console.log(key);\n * });\n * // => Logs 'a' then 'b' (iteration order is not guaranteed).\n */\n function forEach(collection, iteratee) {\n var func = isArray(collection) ? arrayEach : baseEach;\n return func(collection, getIteratee(iteratee, 3));\n }\n\n /**\n * This method is like `_.forEach` except that it iterates over elements of\n * `collection` from right to left.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @alias eachRight\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Array|Object} Returns `collection`.\n * @see _.forEach\n * @example\n *\n * _.forEachRight([1, 2], function(value) {\n * console.log(value);\n * });\n * // => Logs `2` then `1`.\n */\n function forEachRight(collection, iteratee) {\n var func = isArray(collection) ? arrayEachRight : baseEachRight;\n return func(collection, getIteratee(iteratee, 3));\n }\n\n /**\n * Creates an object composed of keys generated from the results of running\n * each element of `collection` thru `iteratee`. The order of grouped values\n * is determined by the order they occur in `collection`. The corresponding\n * value of each key is an array of elements responsible for generating the\n * key. The iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The iteratee to transform keys.\n * @returns {Object} Returns the composed aggregate object.\n * @example\n *\n * _.groupBy([6.1, 4.2, 6.3], Math.floor);\n * // => { '4': [4.2], '6': [6.1, 6.3] }\n *\n * // The `_.property` iteratee shorthand.\n * _.groupBy(['one', 'two', 'three'], 'length');\n * // => { '3': ['one', 'two'], '5': ['three'] }\n */\n var groupBy = createAggregator(function(result, value, key) {\n if (hasOwnProperty.call(result, key)) {\n result[key].push(value);\n } else {\n baseAssignValue(result, key, [value]);\n }\n });\n\n /**\n * Checks if `value` is in `collection`. If `collection` is a string, it's\n * checked for a substring of `value`, otherwise\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * is used for equality comparisons. If `fromIndex` is negative, it's used as\n * the offset from the end of `collection`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object|string} collection The collection to inspect.\n * @param {*} value The value to search for.\n * @param {number} [fromIndex=0] The index to search from.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.\n * @returns {boolean} Returns `true` if `value` is found, else `false`.\n * @example\n *\n * _.includes([1, 2, 3], 1);\n * // => true\n *\n * _.includes([1, 2, 3], 1, 2);\n * // => false\n *\n * _.includes({ 'a': 1, 'b': 2 }, 1);\n * // => true\n *\n * _.includes('abcd', 'bc');\n * // => true\n */\n function includes(collection, value, fromIndex, guard) {\n collection = isArrayLike(collection) ? collection : values(collection);\n fromIndex = (fromIndex && !guard) ? toInteger(fromIndex) : 0;\n\n var length = collection.length;\n if (fromIndex < 0) {\n fromIndex = nativeMax(length + fromIndex, 0);\n }\n return isString(collection)\n ? (fromIndex <= length && collection.indexOf(value, fromIndex) > -1)\n : (!!length && baseIndexOf(collection, value, fromIndex) > -1);\n }\n\n /**\n * Invokes the method at `path` of each element in `collection`, returning\n * an array of the results of each invoked method. Any additional arguments\n * are provided to each invoked method. If `path` is a function, it's invoked\n * for, and `this` bound to, each element in `collection`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Array|Function|string} path The path of the method to invoke or\n * the function invoked per iteration.\n * @param {...*} [args] The arguments to invoke each method with.\n * @returns {Array} Returns the array of results.\n * @example\n *\n * _.invokeMap([[5, 1, 7], [3, 2, 1]], 'sort');\n * // => [[1, 5, 7], [1, 2, 3]]\n *\n * _.invokeMap([123, 456], String.prototype.split, '');\n * // => [['1', '2', '3'], ['4', '5', '6']]\n */\n var invokeMap = baseRest(function(collection, path, args) {\n var index = -1,\n isFunc = typeof path == 'function',\n result = isArrayLike(collection) ? Array(collection.length) : [];\n\n baseEach(collection, function(value) {\n result[++index] = isFunc ? apply(path, value, args) : baseInvoke(value, path, args);\n });\n return result;\n });\n\n /**\n * Creates an object composed of keys generated from the results of running\n * each element of `collection` thru `iteratee`. The corresponding value of\n * each key is the last element responsible for generating the key. The\n * iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The iteratee to transform keys.\n * @returns {Object} Returns the composed aggregate object.\n * @example\n *\n * var array = [\n * { 'dir': 'left', 'code': 97 },\n * { 'dir': 'right', 'code': 100 }\n * ];\n *\n * _.keyBy(array, function(o) {\n * return String.fromCharCode(o.code);\n * });\n * // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } }\n *\n * _.keyBy(array, 'dir');\n * // => { 'left': { 'dir': 'left', 'code': 97 }, 'right': { 'dir': 'right', 'code': 100 } }\n */\n var keyBy = createAggregator(function(result, value, key) {\n baseAssignValue(result, key, value);\n });\n\n /**\n * Creates an array of values by running each element in `collection` thru\n * `iteratee`. The iteratee is invoked with three arguments:\n * (value, index|key, collection).\n *\n * Many lodash methods are guarded to work as iteratees for methods like\n * `_.every`, `_.filter`, `_.map`, `_.mapValues`, `_.reject`, and `_.some`.\n *\n * The guarded methods are:\n * `ary`, `chunk`, `curry`, `curryRight`, `drop`, `dropRight`, `every`,\n * `fill`, `invert`, `parseInt`, `random`, `range`, `rangeRight`, `repeat`,\n * `sampleSize`, `slice`, `some`, `sortBy`, `split`, `take`, `takeRight`,\n * `template`, `trim`, `trimEnd`, `trimStart`, and `words`\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the new mapped array.\n * @example\n *\n * function square(n) {\n * return n * n;\n * }\n *\n * _.map([4, 8], square);\n * // => [16, 64]\n *\n * _.map({ 'a': 4, 'b': 8 }, square);\n * // => [16, 64] (iteration order is not guaranteed)\n *\n * var users = [\n * { 'user': 'barney' },\n * { 'user': 'fred' }\n * ];\n *\n * // The `_.property` iteratee shorthand.\n * _.map(users, 'user');\n * // => ['barney', 'fred']\n */\n function map(collection, iteratee) {\n var func = isArray(collection) ? arrayMap : baseMap;\n return func(collection, getIteratee(iteratee, 3));\n }\n\n /**\n * This method is like `_.sortBy` except that it allows specifying the sort\n * orders of the iteratees to sort by. If `orders` is unspecified, all values\n * are sorted in ascending order. Otherwise, specify an order of \"desc\" for\n * descending or \"asc\" for ascending sort order of corresponding values.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Array[]|Function[]|Object[]|string[]} [iteratees=[_.identity]]\n * The iteratees to sort by.\n * @param {string[]} [orders] The sort orders of `iteratees`.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.\n * @returns {Array} Returns the new sorted array.\n * @example\n *\n * var users = [\n * { 'user': 'fred', 'age': 48 },\n * { 'user': 'barney', 'age': 34 },\n * { 'user': 'fred', 'age': 40 },\n * { 'user': 'barney', 'age': 36 }\n * ];\n *\n * // Sort by `user` in ascending order and by `age` in descending order.\n * _.orderBy(users, ['user', 'age'], ['asc', 'desc']);\n * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]]\n */\n function orderBy(collection, iteratees, orders, guard) {\n if (collection == null) {\n return [];\n }\n if (!isArray(iteratees)) {\n iteratees = iteratees == null ? [] : [iteratees];\n }\n orders = guard ? undefined : orders;\n if (!isArray(orders)) {\n orders = orders == null ? [] : [orders];\n }\n return baseOrderBy(collection, iteratees, orders);\n }\n\n /**\n * Creates an array of elements split into two groups, the first of which\n * contains elements `predicate` returns truthy for, the second of which\n * contains elements `predicate` returns falsey for. The predicate is\n * invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the array of grouped elements.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'age': 36, 'active': false },\n * { 'user': 'fred', 'age': 40, 'active': true },\n * { 'user': 'pebbles', 'age': 1, 'active': false }\n * ];\n *\n * _.partition(users, function(o) { return o.active; });\n * // => objects for [['fred'], ['barney', 'pebbles']]\n *\n * // The `_.matches` iteratee shorthand.\n * _.partition(users, { 'age': 1, 'active': false });\n * // => objects for [['pebbles'], ['barney', 'fred']]\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.partition(users, ['active', false]);\n * // => objects for [['barney', 'pebbles'], ['fred']]\n *\n * // The `_.property` iteratee shorthand.\n * _.partition(users, 'active');\n * // => objects for [['fred'], ['barney', 'pebbles']]\n */\n var partition = createAggregator(function(result, value, key) {\n result[key ? 0 : 1].push(value);\n }, function() { return [[], []]; });\n\n /**\n * Reduces `collection` to a value which is the accumulated result of running\n * each element in `collection` thru `iteratee`, where each successive\n * invocation is supplied the return value of the previous. If `accumulator`\n * is not given, the first element of `collection` is used as the initial\n * value. The iteratee is invoked with four arguments:\n * (accumulator, value, index|key, collection).\n *\n * Many lodash methods are guarded to work as iteratees for methods like\n * `_.reduce`, `_.reduceRight`, and `_.transform`.\n *\n * The guarded methods are:\n * `assign`, `defaults`, `defaultsDeep`, `includes`, `merge`, `orderBy`,\n * and `sortBy`\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @param {*} [accumulator] The initial value.\n * @returns {*} Returns the accumulated value.\n * @see _.reduceRight\n * @example\n *\n * _.reduce([1, 2], function(sum, n) {\n * return sum + n;\n * }, 0);\n * // => 3\n *\n * _.reduce({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {\n * (result[value] || (result[value] = [])).push(key);\n * return result;\n * }, {});\n * // => { '1': ['a', 'c'], '2': ['b'] } (iteration order is not guaranteed)\n */\n function reduce(collection, iteratee, accumulator) {\n var func = isArray(collection) ? arrayReduce : baseReduce,\n initAccum = arguments.length < 3;\n\n return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEach);\n }\n\n /**\n * This method is like `_.reduce` except that it iterates over elements of\n * `collection` from right to left.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @param {*} [accumulator] The initial value.\n * @returns {*} Returns the accumulated value.\n * @see _.reduce\n * @example\n *\n * var array = [[0, 1], [2, 3], [4, 5]];\n *\n * _.reduceRight(array, function(flattened, other) {\n * return flattened.concat(other);\n * }, []);\n * // => [4, 5, 2, 3, 0, 1]\n */\n function reduceRight(collection, iteratee, accumulator) {\n var func = isArray(collection) ? arrayReduceRight : baseReduce,\n initAccum = arguments.length < 3;\n\n return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEachRight);\n }\n\n /**\n * The opposite of `_.filter`; this method returns the elements of `collection`\n * that `predicate` does **not** return truthy for.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the new filtered array.\n * @see _.filter\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'age': 36, 'active': false },\n * { 'user': 'fred', 'age': 40, 'active': true }\n * ];\n *\n * _.reject(users, function(o) { return !o.active; });\n * // => objects for ['fred']\n *\n * // The `_.matches` iteratee shorthand.\n * _.reject(users, { 'age': 40, 'active': true });\n * // => objects for ['barney']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.reject(users, ['active', false]);\n * // => objects for ['fred']\n *\n * // The `_.property` iteratee shorthand.\n * _.reject(users, 'active');\n * // => objects for ['barney']\n */\n function reject(collection, predicate) {\n var func = isArray(collection) ? arrayFilter : baseFilter;\n return func(collection, negate(getIteratee(predicate, 3)));\n }\n\n /**\n * Gets a random element from `collection`.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to sample.\n * @returns {*} Returns the random element.\n * @example\n *\n * _.sample([1, 2, 3, 4]);\n * // => 2\n */\n function sample(collection) {\n var func = isArray(collection) ? arraySample : baseSample;\n return func(collection);\n }\n\n /**\n * Gets `n` random elements at unique keys from `collection` up to the\n * size of `collection`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to sample.\n * @param {number} [n=1] The number of elements to sample.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the random elements.\n * @example\n *\n * _.sampleSize([1, 2, 3], 2);\n * // => [3, 1]\n *\n * _.sampleSize([1, 2, 3], 4);\n * // => [2, 3, 1]\n */\n function sampleSize(collection, n, guard) {\n if ((guard ? isIterateeCall(collection, n, guard) : n === undefined)) {\n n = 1;\n } else {\n n = toInteger(n);\n }\n var func = isArray(collection) ? arraySampleSize : baseSampleSize;\n return func(collection, n);\n }\n\n /**\n * Creates an array of shuffled values, using a version of the\n * [Fisher-Yates shuffle](https://en.wikipedia.org/wiki/Fisher-Yates_shuffle).\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to shuffle.\n * @returns {Array} Returns the new shuffled array.\n * @example\n *\n * _.shuffle([1, 2, 3, 4]);\n * // => [4, 1, 3, 2]\n */\n function shuffle(collection) {\n var func = isArray(collection) ? arrayShuffle : baseShuffle;\n return func(collection);\n }\n\n /**\n * Gets the size of `collection` by returning its length for array-like\n * values or the number of own enumerable string keyed properties for objects.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object|string} collection The collection to inspect.\n * @returns {number} Returns the collection size.\n * @example\n *\n * _.size([1, 2, 3]);\n * // => 3\n *\n * _.size({ 'a': 1, 'b': 2 });\n * // => 2\n *\n * _.size('pebbles');\n * // => 7\n */\n function size(collection) {\n if (collection == null) {\n return 0;\n }\n if (isArrayLike(collection)) {\n return isString(collection) ? stringSize(collection) : collection.length;\n }\n var tag = getTag(collection);\n if (tag == mapTag || tag == setTag) {\n return collection.size;\n }\n return baseKeys(collection).length;\n }\n\n /**\n * Checks if `predicate` returns truthy for **any** element of `collection`.\n * Iteration is stopped once `predicate` returns truthy. The predicate is\n * invoked with three arguments: (value, index|key, collection).\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {boolean} Returns `true` if any element passes the predicate check,\n * else `false`.\n * @example\n *\n * _.some([null, 0, 'yes', false], Boolean);\n * // => true\n *\n * var users = [\n * { 'user': 'barney', 'active': true },\n * { 'user': 'fred', 'active': false }\n * ];\n *\n * // The `_.matches` iteratee shorthand.\n * _.some(users, { 'user': 'barney', 'active': false });\n * // => false\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.some(users, ['active', false]);\n * // => true\n *\n * // The `_.property` iteratee shorthand.\n * _.some(users, 'active');\n * // => true\n */\n function some(collection, predicate, guard) {\n var func = isArray(collection) ? arraySome : baseSome;\n if (guard && isIterateeCall(collection, predicate, guard)) {\n predicate = undefined;\n }\n return func(collection, getIteratee(predicate, 3));\n }\n\n /**\n * Creates an array of elements, sorted in ascending order by the results of\n * running each element in a collection thru each iteratee. This method\n * performs a stable sort, that is, it preserves the original sort order of\n * equal elements. The iteratees are invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {...(Function|Function[])} [iteratees=[_.identity]]\n * The iteratees to sort by.\n * @returns {Array} Returns the new sorted array.\n * @example\n *\n * var users = [\n * { 'user': 'fred', 'age': 48 },\n * { 'user': 'barney', 'age': 36 },\n * { 'user': 'fred', 'age': 30 },\n * { 'user': 'barney', 'age': 34 }\n * ];\n *\n * _.sortBy(users, [function(o) { return o.user; }]);\n * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 30]]\n *\n * _.sortBy(users, ['user', 'age']);\n * // => objects for [['barney', 34], ['barney', 36], ['fred', 30], ['fred', 48]]\n */\n var sortBy = baseRest(function(collection, iteratees) {\n if (collection == null) {\n return [];\n }\n var length = iteratees.length;\n if (length > 1 && isIterateeCall(collection, iteratees[0], iteratees[1])) {\n iteratees = [];\n } else if (length > 2 && isIterateeCall(iteratees[0], iteratees[1], iteratees[2])) {\n iteratees = [iteratees[0]];\n }\n return baseOrderBy(collection, baseFlatten(iteratees, 1), []);\n });\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Gets the timestamp of the number of milliseconds that have elapsed since\n * the Unix epoch (1 January 1970 00:00:00 UTC).\n *\n * @static\n * @memberOf _\n * @since 2.4.0\n * @category Date\n * @returns {number} Returns the timestamp.\n * @example\n *\n * _.defer(function(stamp) {\n * console.log(_.now() - stamp);\n * }, _.now());\n * // => Logs the number of milliseconds it took for the deferred invocation.\n */\n var now = ctxNow || function() {\n return root.Date.now();\n };\n\n /*------------------------------------------------------------------------*/\n\n /**\n * The opposite of `_.before`; this method creates a function that invokes\n * `func` once it's called `n` or more times.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {number} n The number of calls before `func` is invoked.\n * @param {Function} func The function to restrict.\n * @returns {Function} Returns the new restricted function.\n * @example\n *\n * var saves = ['profile', 'settings'];\n *\n * var done = _.after(saves.length, function() {\n * console.log('done saving!');\n * });\n *\n * _.forEach(saves, function(type) {\n * asyncSave({ 'type': type, 'complete': done });\n * });\n * // => Logs 'done saving!' after the two async saves have completed.\n */\n function after(n, func) {\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n n = toInteger(n);\n return function() {\n if (--n < 1) {\n return func.apply(this, arguments);\n }\n };\n }\n\n /**\n * Creates a function that invokes `func`, with up to `n` arguments,\n * ignoring any additional arguments.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Function\n * @param {Function} func The function to cap arguments for.\n * @param {number} [n=func.length] The arity cap.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Function} Returns the new capped function.\n * @example\n *\n * _.map(['6', '8', '10'], _.ary(parseInt, 1));\n * // => [6, 8, 10]\n */\n function ary(func, n, guard) {\n n = guard ? undefined : n;\n n = (func && n == null) ? func.length : n;\n return createWrap(func, WRAP_ARY_FLAG, undefined, undefined, undefined, undefined, n);\n }\n\n /**\n * Creates a function that invokes `func`, with the `this` binding and arguments\n * of the created function, while it's called less than `n` times. Subsequent\n * calls to the created function return the result of the last `func` invocation.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Function\n * @param {number} n The number of calls at which `func` is no longer invoked.\n * @param {Function} func The function to restrict.\n * @returns {Function} Returns the new restricted function.\n * @example\n *\n * jQuery(element).on('click', _.before(5, addContactToList));\n * // => Allows adding up to 4 contacts to the list.\n */\n function before(n, func) {\n var result;\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n n = toInteger(n);\n return function() {\n if (--n > 0) {\n result = func.apply(this, arguments);\n }\n if (n <= 1) {\n func = undefined;\n }\n return result;\n };\n }\n\n /**\n * Creates a function that invokes `func` with the `this` binding of `thisArg`\n * and `partials` prepended to the arguments it receives.\n *\n * The `_.bind.placeholder` value, which defaults to `_` in monolithic builds,\n * may be used as a placeholder for partially applied arguments.\n *\n * **Note:** Unlike native `Function#bind`, this method doesn't set the \"length\"\n * property of bound functions.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to bind.\n * @param {*} thisArg The `this` binding of `func`.\n * @param {...*} [partials] The arguments to be partially applied.\n * @returns {Function} Returns the new bound function.\n * @example\n *\n * function greet(greeting, punctuation) {\n * return greeting + ' ' + this.user + punctuation;\n * }\n *\n * var object = { 'user': 'fred' };\n *\n * var bound = _.bind(greet, object, 'hi');\n * bound('!');\n * // => 'hi fred!'\n *\n * // Bound with placeholders.\n * var bound = _.bind(greet, object, _, '!');\n * bound('hi');\n * // => 'hi fred!'\n */\n var bind = baseRest(function(func, thisArg, partials) {\n var bitmask = WRAP_BIND_FLAG;\n if (partials.length) {\n var holders = replaceHolders(partials, getHolder(bind));\n bitmask |= WRAP_PARTIAL_FLAG;\n }\n return createWrap(func, bitmask, thisArg, partials, holders);\n });\n\n /**\n * Creates a function that invokes the method at `object[key]` with `partials`\n * prepended to the arguments it receives.\n *\n * This method differs from `_.bind` by allowing bound functions to reference\n * methods that may be redefined or don't yet exist. See\n * [Peter Michaux's article](http://peter.michaux.ca/articles/lazy-function-definition-pattern)\n * for more details.\n *\n * The `_.bindKey.placeholder` value, which defaults to `_` in monolithic\n * builds, may be used as a placeholder for partially applied arguments.\n *\n * @static\n * @memberOf _\n * @since 0.10.0\n * @category Function\n * @param {Object} object The object to invoke the method on.\n * @param {string} key The key of the method.\n * @param {...*} [partials] The arguments to be partially applied.\n * @returns {Function} Returns the new bound function.\n * @example\n *\n * var object = {\n * 'user': 'fred',\n * 'greet': function(greeting, punctuation) {\n * return greeting + ' ' + this.user + punctuation;\n * }\n * };\n *\n * var bound = _.bindKey(object, 'greet', 'hi');\n * bound('!');\n * // => 'hi fred!'\n *\n * object.greet = function(greeting, punctuation) {\n * return greeting + 'ya ' + this.user + punctuation;\n * };\n *\n * bound('!');\n * // => 'hiya fred!'\n *\n * // Bound with placeholders.\n * var bound = _.bindKey(object, 'greet', _, '!');\n * bound('hi');\n * // => 'hiya fred!'\n */\n var bindKey = baseRest(function(object, key, partials) {\n var bitmask = WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG;\n if (partials.length) {\n var holders = replaceHolders(partials, getHolder(bindKey));\n bitmask |= WRAP_PARTIAL_FLAG;\n }\n return createWrap(key, bitmask, object, partials, holders);\n });\n\n /**\n * Creates a function that accepts arguments of `func` and either invokes\n * `func` returning its result, if at least `arity` number of arguments have\n * been provided, or returns a function that accepts the remaining `func`\n * arguments, and so on. The arity of `func` may be specified if `func.length`\n * is not sufficient.\n *\n * The `_.curry.placeholder` value, which defaults to `_` in monolithic builds,\n * may be used as a placeholder for provided arguments.\n *\n * **Note:** This method doesn't set the \"length\" property of curried functions.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Function\n * @param {Function} func The function to curry.\n * @param {number} [arity=func.length] The arity of `func`.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Function} Returns the new curried function.\n * @example\n *\n * var abc = function(a, b, c) {\n * return [a, b, c];\n * };\n *\n * var curried = _.curry(abc);\n *\n * curried(1)(2)(3);\n * // => [1, 2, 3]\n *\n * curried(1, 2)(3);\n * // => [1, 2, 3]\n *\n * curried(1, 2, 3);\n * // => [1, 2, 3]\n *\n * // Curried with placeholders.\n * curried(1)(_, 3)(2);\n * // => [1, 2, 3]\n */\n function curry(func, arity, guard) {\n arity = guard ? undefined : arity;\n var result = createWrap(func, WRAP_CURRY_FLAG, undefined, undefined, undefined, undefined, undefined, arity);\n result.placeholder = curry.placeholder;\n return result;\n }\n\n /**\n * This method is like `_.curry` except that arguments are applied to `func`\n * in the manner of `_.partialRight` instead of `_.partial`.\n *\n * The `_.curryRight.placeholder` value, which defaults to `_` in monolithic\n * builds, may be used as a placeholder for provided arguments.\n *\n * **Note:** This method doesn't set the \"length\" property of curried functions.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Function\n * @param {Function} func The function to curry.\n * @param {number} [arity=func.length] The arity of `func`.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Function} Returns the new curried function.\n * @example\n *\n * var abc = function(a, b, c) {\n * return [a, b, c];\n * };\n *\n * var curried = _.curryRight(abc);\n *\n * curried(3)(2)(1);\n * // => [1, 2, 3]\n *\n * curried(2, 3)(1);\n * // => [1, 2, 3]\n *\n * curried(1, 2, 3);\n * // => [1, 2, 3]\n *\n * // Curried with placeholders.\n * curried(3)(1, _)(2);\n * // => [1, 2, 3]\n */\n function curryRight(func, arity, guard) {\n arity = guard ? undefined : arity;\n var result = createWrap(func, WRAP_CURRY_RIGHT_FLAG, undefined, undefined, undefined, undefined, undefined, arity);\n result.placeholder = curryRight.placeholder;\n return result;\n }\n\n /**\n * Creates a debounced function that delays invoking `func` until after `wait`\n * milliseconds have elapsed since the last time the debounced function was\n * invoked. The debounced function comes with a `cancel` method to cancel\n * delayed `func` invocations and a `flush` method to immediately invoke them.\n * Provide `options` to indicate whether `func` should be invoked on the\n * leading and/or trailing edge of the `wait` timeout. The `func` is invoked\n * with the last arguments provided to the debounced function. Subsequent\n * calls to the debounced function return the result of the last `func`\n * invocation.\n *\n * **Note:** If `leading` and `trailing` options are `true`, `func` is\n * invoked on the trailing edge of the timeout only if the debounced function\n * is invoked more than once during the `wait` timeout.\n *\n * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred\n * until to the next tick, similar to `setTimeout` with a timeout of `0`.\n *\n * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)\n * for details over the differences between `_.debounce` and `_.throttle`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to debounce.\n * @param {number} [wait=0] The number of milliseconds to delay.\n * @param {Object} [options={}] The options object.\n * @param {boolean} [options.leading=false]\n * Specify invoking on the leading edge of the timeout.\n * @param {number} [options.maxWait]\n * The maximum time `func` is allowed to be delayed before it's invoked.\n * @param {boolean} [options.trailing=true]\n * Specify invoking on the trailing edge of the timeout.\n * @returns {Function} Returns the new debounced function.\n * @example\n *\n * // Avoid costly calculations while the window size is in flux.\n * jQuery(window).on('resize', _.debounce(calculateLayout, 150));\n *\n * // Invoke `sendMail` when clicked, debouncing subsequent calls.\n * jQuery(element).on('click', _.debounce(sendMail, 300, {\n * 'leading': true,\n * 'trailing': false\n * }));\n *\n * // Ensure `batchLog` is invoked once after 1 second of debounced calls.\n * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 });\n * var source = new EventSource('/stream');\n * jQuery(source).on('message', debounced);\n *\n * // Cancel the trailing debounced invocation.\n * jQuery(window).on('popstate', debounced.cancel);\n */\n function debounce(func, wait, options) {\n var lastArgs,\n lastThis,\n maxWait,\n result,\n timerId,\n lastCallTime,\n lastInvokeTime = 0,\n leading = false,\n maxing = false,\n trailing = true;\n\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n wait = toNumber(wait) || 0;\n if (isObject(options)) {\n leading = !!options.leading;\n maxing = 'maxWait' in options;\n maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait;\n trailing = 'trailing' in options ? !!options.trailing : trailing;\n }\n\n function invokeFunc(time) {\n var args = lastArgs,\n thisArg = lastThis;\n\n lastArgs = lastThis = undefined;\n lastInvokeTime = time;\n result = func.apply(thisArg, args);\n return result;\n }\n\n function leadingEdge(time) {\n // Reset any `maxWait` timer.\n lastInvokeTime = time;\n // Start the timer for the trailing edge.\n timerId = setTimeout(timerExpired, wait);\n // Invoke the leading edge.\n return leading ? invokeFunc(time) : result;\n }\n\n function remainingWait(time) {\n var timeSinceLastCall = time - lastCallTime,\n timeSinceLastInvoke = time - lastInvokeTime,\n timeWaiting = wait - timeSinceLastCall;\n\n return maxing\n ? nativeMin(timeWaiting, maxWait - timeSinceLastInvoke)\n : timeWaiting;\n }\n\n function shouldInvoke(time) {\n var timeSinceLastCall = time - lastCallTime,\n timeSinceLastInvoke = time - lastInvokeTime;\n\n // Either this is the first call, activity has stopped and we're at the\n // trailing edge, the system time has gone backwards and we're treating\n // it as the trailing edge, or we've hit the `maxWait` limit.\n return (lastCallTime === undefined || (timeSinceLastCall >= wait) ||\n (timeSinceLastCall < 0) || (maxing && timeSinceLastInvoke >= maxWait));\n }\n\n function timerExpired() {\n var time = now();\n if (shouldInvoke(time)) {\n return trailingEdge(time);\n }\n // Restart the timer.\n timerId = setTimeout(timerExpired, remainingWait(time));\n }\n\n function trailingEdge(time) {\n timerId = undefined;\n\n // Only invoke if we have `lastArgs` which means `func` has been\n // debounced at least once.\n if (trailing && lastArgs) {\n return invokeFunc(time);\n }\n lastArgs = lastThis = undefined;\n return result;\n }\n\n function cancel() {\n if (timerId !== undefined) {\n clearTimeout(timerId);\n }\n lastInvokeTime = 0;\n lastArgs = lastCallTime = lastThis = timerId = undefined;\n }\n\n function flush() {\n return timerId === undefined ? result : trailingEdge(now());\n }\n\n function debounced() {\n var time = now(),\n isInvoking = shouldInvoke(time);\n\n lastArgs = arguments;\n lastThis = this;\n lastCallTime = time;\n\n if (isInvoking) {\n if (timerId === undefined) {\n return leadingEdge(lastCallTime);\n }\n if (maxing) {\n // Handle invocations in a tight loop.\n clearTimeout(timerId);\n timerId = setTimeout(timerExpired, wait);\n return invokeFunc(lastCallTime);\n }\n }\n if (timerId === undefined) {\n timerId = setTimeout(timerExpired, wait);\n }\n return result;\n }\n debounced.cancel = cancel;\n debounced.flush = flush;\n return debounced;\n }\n\n /**\n * Defers invoking the `func` until the current call stack has cleared. Any\n * additional arguments are provided to `func` when it's invoked.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to defer.\n * @param {...*} [args] The arguments to invoke `func` with.\n * @returns {number} Returns the timer id.\n * @example\n *\n * _.defer(function(text) {\n * console.log(text);\n * }, 'deferred');\n * // => Logs 'deferred' after one millisecond.\n */\n var defer = baseRest(function(func, args) {\n return baseDelay(func, 1, args);\n });\n\n /**\n * Invokes `func` after `wait` milliseconds. Any additional arguments are\n * provided to `func` when it's invoked.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to delay.\n * @param {number} wait The number of milliseconds to delay invocation.\n * @param {...*} [args] The arguments to invoke `func` with.\n * @returns {number} Returns the timer id.\n * @example\n *\n * _.delay(function(text) {\n * console.log(text);\n * }, 1000, 'later');\n * // => Logs 'later' after one second.\n */\n var delay = baseRest(function(func, wait, args) {\n return baseDelay(func, toNumber(wait) || 0, args);\n });\n\n /**\n * Creates a function that invokes `func` with arguments reversed.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Function\n * @param {Function} func The function to flip arguments for.\n * @returns {Function} Returns the new flipped function.\n * @example\n *\n * var flipped = _.flip(function() {\n * return _.toArray(arguments);\n * });\n *\n * flipped('a', 'b', 'c', 'd');\n * // => ['d', 'c', 'b', 'a']\n */\n function flip(func) {\n return createWrap(func, WRAP_FLIP_FLAG);\n }\n\n /**\n * Creates a function that memoizes the result of `func`. If `resolver` is\n * provided, it determines the cache key for storing the result based on the\n * arguments provided to the memoized function. By default, the first argument\n * provided to the memoized function is used as the map cache key. The `func`\n * is invoked with the `this` binding of the memoized function.\n *\n * **Note:** The cache is exposed as the `cache` property on the memoized\n * function. Its creation may be customized by replacing the `_.memoize.Cache`\n * constructor with one whose instances implement the\n * [`Map`](http://ecma-international.org/ecma-262/7.0/#sec-properties-of-the-map-prototype-object)\n * method interface of `clear`, `delete`, `get`, `has`, and `set`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to have its output memoized.\n * @param {Function} [resolver] The function to resolve the cache key.\n * @returns {Function} Returns the new memoized function.\n * @example\n *\n * var object = { 'a': 1, 'b': 2 };\n * var other = { 'c': 3, 'd': 4 };\n *\n * var values = _.memoize(_.values);\n * values(object);\n * // => [1, 2]\n *\n * values(other);\n * // => [3, 4]\n *\n * object.a = 2;\n * values(object);\n * // => [1, 2]\n *\n * // Modify the result cache.\n * values.cache.set(object, ['a', 'b']);\n * values(object);\n * // => ['a', 'b']\n *\n * // Replace `_.memoize.Cache`.\n * _.memoize.Cache = WeakMap;\n */\n function memoize(func, resolver) {\n if (typeof func != 'function' || (resolver != null && typeof resolver != 'function')) {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n var memoized = function() {\n var args = arguments,\n key = resolver ? resolver.apply(this, args) : args[0],\n cache = memoized.cache;\n\n if (cache.has(key)) {\n return cache.get(key);\n }\n var result = func.apply(this, args);\n memoized.cache = cache.set(key, result) || cache;\n return result;\n };\n memoized.cache = new (memoize.Cache || MapCache);\n return memoized;\n }\n\n // Expose `MapCache`.\n memoize.Cache = MapCache;\n\n /**\n * Creates a function that negates the result of the predicate `func`. The\n * `func` predicate is invoked with the `this` binding and arguments of the\n * created function.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Function\n * @param {Function} predicate The predicate to negate.\n * @returns {Function} Returns the new negated function.\n * @example\n *\n * function isEven(n) {\n * return n % 2 == 0;\n * }\n *\n * _.filter([1, 2, 3, 4, 5, 6], _.negate(isEven));\n * // => [1, 3, 5]\n */\n function negate(predicate) {\n if (typeof predicate != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n return function() {\n var args = arguments;\n switch (args.length) {\n case 0: return !predicate.call(this);\n case 1: return !predicate.call(this, args[0]);\n case 2: return !predicate.call(this, args[0], args[1]);\n case 3: return !predicate.call(this, args[0], args[1], args[2]);\n }\n return !predicate.apply(this, args);\n };\n }\n\n /**\n * Creates a function that is restricted to invoking `func` once. Repeat calls\n * to the function return the value of the first invocation. The `func` is\n * invoked with the `this` binding and arguments of the created function.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to restrict.\n * @returns {Function} Returns the new restricted function.\n * @example\n *\n * var initialize = _.once(createApplication);\n * initialize();\n * initialize();\n * // => `createApplication` is invoked once\n */\n function once(func) {\n return before(2, func);\n }\n\n /**\n * Creates a function that invokes `func` with its arguments transformed.\n *\n * @static\n * @since 4.0.0\n * @memberOf _\n * @category Function\n * @param {Function} func The function to wrap.\n * @param {...(Function|Function[])} [transforms=[_.identity]]\n * The argument transforms.\n * @returns {Function} Returns the new function.\n * @example\n *\n * function doubled(n) {\n * return n * 2;\n * }\n *\n * function square(n) {\n * return n * n;\n * }\n *\n * var func = _.overArgs(function(x, y) {\n * return [x, y];\n * }, [square, doubled]);\n *\n * func(9, 3);\n * // => [81, 6]\n *\n * func(10, 5);\n * // => [100, 10]\n */\n var overArgs = castRest(function(func, transforms) {\n transforms = (transforms.length == 1 && isArray(transforms[0]))\n ? arrayMap(transforms[0], baseUnary(getIteratee()))\n : arrayMap(baseFlatten(transforms, 1), baseUnary(getIteratee()));\n\n var funcsLength = transforms.length;\n return baseRest(function(args) {\n var index = -1,\n length = nativeMin(args.length, funcsLength);\n\n while (++index < length) {\n args[index] = transforms[index].call(this, args[index]);\n }\n return apply(func, this, args);\n });\n });\n\n /**\n * Creates a function that invokes `func` with `partials` prepended to the\n * arguments it receives. This method is like `_.bind` except it does **not**\n * alter the `this` binding.\n *\n * The `_.partial.placeholder` value, which defaults to `_` in monolithic\n * builds, may be used as a placeholder for partially applied arguments.\n *\n * **Note:** This method doesn't set the \"length\" property of partially\n * applied functions.\n *\n * @static\n * @memberOf _\n * @since 0.2.0\n * @category Function\n * @param {Function} func The function to partially apply arguments to.\n * @param {...*} [partials] The arguments to be partially applied.\n * @returns {Function} Returns the new partially applied function.\n * @example\n *\n * function greet(greeting, name) {\n * return greeting + ' ' + name;\n * }\n *\n * var sayHelloTo = _.partial(greet, 'hello');\n * sayHelloTo('fred');\n * // => 'hello fred'\n *\n * // Partially applied with placeholders.\n * var greetFred = _.partial(greet, _, 'fred');\n * greetFred('hi');\n * // => 'hi fred'\n */\n var partial = baseRest(function(func, partials) {\n var holders = replaceHolders(partials, getHolder(partial));\n return createWrap(func, WRAP_PARTIAL_FLAG, undefined, partials, holders);\n });\n\n /**\n * This method is like `_.partial` except that partially applied arguments\n * are appended to the arguments it receives.\n *\n * The `_.partialRight.placeholder` value, which defaults to `_` in monolithic\n * builds, may be used as a placeholder for partially applied arguments.\n *\n * **Note:** This method doesn't set the \"length\" property of partially\n * applied functions.\n *\n * @static\n * @memberOf _\n * @since 1.0.0\n * @category Function\n * @param {Function} func The function to partially apply arguments to.\n * @param {...*} [partials] The arguments to be partially applied.\n * @returns {Function} Returns the new partially applied function.\n * @example\n *\n * function greet(greeting, name) {\n * return greeting + ' ' + name;\n * }\n *\n * var greetFred = _.partialRight(greet, 'fred');\n * greetFred('hi');\n * // => 'hi fred'\n *\n * // Partially applied with placeholders.\n * var sayHelloTo = _.partialRight(greet, 'hello', _);\n * sayHelloTo('fred');\n * // => 'hello fred'\n */\n var partialRight = baseRest(function(func, partials) {\n var holders = replaceHolders(partials, getHolder(partialRight));\n return createWrap(func, WRAP_PARTIAL_RIGHT_FLAG, undefined, partials, holders);\n });\n\n /**\n * Creates a function that invokes `func` with arguments arranged according\n * to the specified `indexes` where the argument value at the first index is\n * provided as the first argument, the argument value at the second index is\n * provided as the second argument, and so on.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Function\n * @param {Function} func The function to rearrange arguments for.\n * @param {...(number|number[])} indexes The arranged argument indexes.\n * @returns {Function} Returns the new function.\n * @example\n *\n * var rearged = _.rearg(function(a, b, c) {\n * return [a, b, c];\n * }, [2, 0, 1]);\n *\n * rearged('b', 'c', 'a')\n * // => ['a', 'b', 'c']\n */\n var rearg = flatRest(function(func, indexes) {\n return createWrap(func, WRAP_REARG_FLAG, undefined, undefined, undefined, indexes);\n });\n\n /**\n * Creates a function that invokes `func` with the `this` binding of the\n * created function and arguments from `start` and beyond provided as\n * an array.\n *\n * **Note:** This method is based on the\n * [rest parameter](https://mdn.io/rest_parameters).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Function\n * @param {Function} func The function to apply a rest parameter to.\n * @param {number} [start=func.length-1] The start position of the rest parameter.\n * @returns {Function} Returns the new function.\n * @example\n *\n * var say = _.rest(function(what, names) {\n * return what + ' ' + _.initial(names).join(', ') +\n * (_.size(names) > 1 ? ', & ' : '') + _.last(names);\n * });\n *\n * say('hello', 'fred', 'barney', 'pebbles');\n * // => 'hello fred, barney, & pebbles'\n */\n function rest(func, start) {\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n start = start === undefined ? start : toInteger(start);\n return baseRest(func, start);\n }\n\n /**\n * Creates a function that invokes `func` with the `this` binding of the\n * create function and an array of arguments much like\n * [`Function#apply`](http://www.ecma-international.org/ecma-262/7.0/#sec-function.prototype.apply).\n *\n * **Note:** This method is based on the\n * [spread operator](https://mdn.io/spread_operator).\n *\n * @static\n * @memberOf _\n * @since 3.2.0\n * @category Function\n * @param {Function} func The function to spread arguments over.\n * @param {number} [start=0] The start position of the spread.\n * @returns {Function} Returns the new function.\n * @example\n *\n * var say = _.spread(function(who, what) {\n * return who + ' says ' + what;\n * });\n *\n * say(['fred', 'hello']);\n * // => 'fred says hello'\n *\n * var numbers = Promise.all([\n * Promise.resolve(40),\n * Promise.resolve(36)\n * ]);\n *\n * numbers.then(_.spread(function(x, y) {\n * return x + y;\n * }));\n * // => a Promise of 76\n */\n function spread(func, start) {\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n start = start == null ? 0 : nativeMax(toInteger(start), 0);\n return baseRest(function(args) {\n var array = args[start],\n otherArgs = castSlice(args, 0, start);\n\n if (array) {\n arrayPush(otherArgs, array);\n }\n return apply(func, this, otherArgs);\n });\n }\n\n /**\n * Creates a throttled function that only invokes `func` at most once per\n * every `wait` milliseconds. The throttled function comes with a `cancel`\n * method to cancel delayed `func` invocations and a `flush` method to\n * immediately invoke them. Provide `options` to indicate whether `func`\n * should be invoked on the leading and/or trailing edge of the `wait`\n * timeout. The `func` is invoked with the last arguments provided to the\n * throttled function. Subsequent calls to the throttled function return the\n * result of the last `func` invocation.\n *\n * **Note:** If `leading` and `trailing` options are `true`, `func` is\n * invoked on the trailing edge of the timeout only if the throttled function\n * is invoked more than once during the `wait` timeout.\n *\n * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred\n * until to the next tick, similar to `setTimeout` with a timeout of `0`.\n *\n * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)\n * for details over the differences between `_.throttle` and `_.debounce`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to throttle.\n * @param {number} [wait=0] The number of milliseconds to throttle invocations to.\n * @param {Object} [options={}] The options object.\n * @param {boolean} [options.leading=true]\n * Specify invoking on the leading edge of the timeout.\n * @param {boolean} [options.trailing=true]\n * Specify invoking on the trailing edge of the timeout.\n * @returns {Function} Returns the new throttled function.\n * @example\n *\n * // Avoid excessively updating the position while scrolling.\n * jQuery(window).on('scroll', _.throttle(updatePosition, 100));\n *\n * // Invoke `renewToken` when the click event is fired, but not more than once every 5 minutes.\n * var throttled = _.throttle(renewToken, 300000, { 'trailing': false });\n * jQuery(element).on('click', throttled);\n *\n * // Cancel the trailing throttled invocation.\n * jQuery(window).on('popstate', throttled.cancel);\n */\n function throttle(func, wait, options) {\n var leading = true,\n trailing = true;\n\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n if (isObject(options)) {\n leading = 'leading' in options ? !!options.leading : leading;\n trailing = 'trailing' in options ? !!options.trailing : trailing;\n }\n return debounce(func, wait, {\n 'leading': leading,\n 'maxWait': wait,\n 'trailing': trailing\n });\n }\n\n /**\n * Creates a function that accepts up to one argument, ignoring any\n * additional arguments.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Function\n * @param {Function} func The function to cap arguments for.\n * @returns {Function} Returns the new capped function.\n * @example\n *\n * _.map(['6', '8', '10'], _.unary(parseInt));\n * // => [6, 8, 10]\n */\n function unary(func) {\n return ary(func, 1);\n }\n\n /**\n * Creates a function that provides `value` to `wrapper` as its first\n * argument. Any additional arguments provided to the function are appended\n * to those provided to the `wrapper`. The wrapper is invoked with the `this`\n * binding of the created function.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {*} value The value to wrap.\n * @param {Function} [wrapper=identity] The wrapper function.\n * @returns {Function} Returns the new function.\n * @example\n *\n * var p = _.wrap(_.escape, function(func, text) {\n * return '

    ' + func(text) + '

    ';\n * });\n *\n * p('fred, barney, & pebbles');\n * // => '

    fred, barney, & pebbles

    '\n */\n function wrap(value, wrapper) {\n return partial(castFunction(wrapper), value);\n }\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Casts `value` as an array if it's not one.\n *\n * @static\n * @memberOf _\n * @since 4.4.0\n * @category Lang\n * @param {*} value The value to inspect.\n * @returns {Array} Returns the cast array.\n * @example\n *\n * _.castArray(1);\n * // => [1]\n *\n * _.castArray({ 'a': 1 });\n * // => [{ 'a': 1 }]\n *\n * _.castArray('abc');\n * // => ['abc']\n *\n * _.castArray(null);\n * // => [null]\n *\n * _.castArray(undefined);\n * // => [undefined]\n *\n * _.castArray();\n * // => []\n *\n * var array = [1, 2, 3];\n * console.log(_.castArray(array) === array);\n * // => true\n */\n function castArray() {\n if (!arguments.length) {\n return [];\n }\n var value = arguments[0];\n return isArray(value) ? value : [value];\n }\n\n /**\n * Creates a shallow clone of `value`.\n *\n * **Note:** This method is loosely based on the\n * [structured clone algorithm](https://mdn.io/Structured_clone_algorithm)\n * and supports cloning arrays, array buffers, booleans, date objects, maps,\n * numbers, `Object` objects, regexes, sets, strings, symbols, and typed\n * arrays. The own enumerable properties of `arguments` objects are cloned\n * as plain objects. An empty object is returned for uncloneable values such\n * as error objects, functions, DOM nodes, and WeakMaps.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to clone.\n * @returns {*} Returns the cloned value.\n * @see _.cloneDeep\n * @example\n *\n * var objects = [{ 'a': 1 }, { 'b': 2 }];\n *\n * var shallow = _.clone(objects);\n * console.log(shallow[0] === objects[0]);\n * // => true\n */\n function clone(value) {\n return baseClone(value, CLONE_SYMBOLS_FLAG);\n }\n\n /**\n * This method is like `_.clone` except that it accepts `customizer` which\n * is invoked to produce the cloned value. If `customizer` returns `undefined`,\n * cloning is handled by the method instead. The `customizer` is invoked with\n * up to four arguments; (value [, index|key, object, stack]).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to clone.\n * @param {Function} [customizer] The function to customize cloning.\n * @returns {*} Returns the cloned value.\n * @see _.cloneDeepWith\n * @example\n *\n * function customizer(value) {\n * if (_.isElement(value)) {\n * return value.cloneNode(false);\n * }\n * }\n *\n * var el = _.cloneWith(document.body, customizer);\n *\n * console.log(el === document.body);\n * // => false\n * console.log(el.nodeName);\n * // => 'BODY'\n * console.log(el.childNodes.length);\n * // => 0\n */\n function cloneWith(value, customizer) {\n customizer = typeof customizer == 'function' ? customizer : undefined;\n return baseClone(value, CLONE_SYMBOLS_FLAG, customizer);\n }\n\n /**\n * This method is like `_.clone` except that it recursively clones `value`.\n *\n * @static\n * @memberOf _\n * @since 1.0.0\n * @category Lang\n * @param {*} value The value to recursively clone.\n * @returns {*} Returns the deep cloned value.\n * @see _.clone\n * @example\n *\n * var objects = [{ 'a': 1 }, { 'b': 2 }];\n *\n * var deep = _.cloneDeep(objects);\n * console.log(deep[0] === objects[0]);\n * // => false\n */\n function cloneDeep(value) {\n return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG);\n }\n\n /**\n * This method is like `_.cloneWith` except that it recursively clones `value`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to recursively clone.\n * @param {Function} [customizer] The function to customize cloning.\n * @returns {*} Returns the deep cloned value.\n * @see _.cloneWith\n * @example\n *\n * function customizer(value) {\n * if (_.isElement(value)) {\n * return value.cloneNode(true);\n * }\n * }\n *\n * var el = _.cloneDeepWith(document.body, customizer);\n *\n * console.log(el === document.body);\n * // => false\n * console.log(el.nodeName);\n * // => 'BODY'\n * console.log(el.childNodes.length);\n * // => 20\n */\n function cloneDeepWith(value, customizer) {\n customizer = typeof customizer == 'function' ? customizer : undefined;\n return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG, customizer);\n }\n\n /**\n * Checks if `object` conforms to `source` by invoking the predicate\n * properties of `source` with the corresponding property values of `object`.\n *\n * **Note:** This method is equivalent to `_.conforms` when `source` is\n * partially applied.\n *\n * @static\n * @memberOf _\n * @since 4.14.0\n * @category Lang\n * @param {Object} object The object to inspect.\n * @param {Object} source The object of property predicates to conform to.\n * @returns {boolean} Returns `true` if `object` conforms, else `false`.\n * @example\n *\n * var object = { 'a': 1, 'b': 2 };\n *\n * _.conformsTo(object, { 'b': function(n) { return n > 1; } });\n * // => true\n *\n * _.conformsTo(object, { 'b': function(n) { return n > 2; } });\n * // => false\n */\n function conformsTo(object, source) {\n return source == null || baseConformsTo(object, source, keys(source));\n }\n\n /**\n * Performs a\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * comparison between two values to determine if they are equivalent.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n * @example\n *\n * var object = { 'a': 1 };\n * var other = { 'a': 1 };\n *\n * _.eq(object, object);\n * // => true\n *\n * _.eq(object, other);\n * // => false\n *\n * _.eq('a', 'a');\n * // => true\n *\n * _.eq('a', Object('a'));\n * // => false\n *\n * _.eq(NaN, NaN);\n * // => true\n */\n function eq(value, other) {\n return value === other || (value !== value && other !== other);\n }\n\n /**\n * Checks if `value` is greater than `other`.\n *\n * @static\n * @memberOf _\n * @since 3.9.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if `value` is greater than `other`,\n * else `false`.\n * @see _.lt\n * @example\n *\n * _.gt(3, 1);\n * // => true\n *\n * _.gt(3, 3);\n * // => false\n *\n * _.gt(1, 3);\n * // => false\n */\n var gt = createRelationalOperation(baseGt);\n\n /**\n * Checks if `value` is greater than or equal to `other`.\n *\n * @static\n * @memberOf _\n * @since 3.9.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if `value` is greater than or equal to\n * `other`, else `false`.\n * @see _.lte\n * @example\n *\n * _.gte(3, 1);\n * // => true\n *\n * _.gte(3, 3);\n * // => true\n *\n * _.gte(1, 3);\n * // => false\n */\n var gte = createRelationalOperation(function(value, other) {\n return value >= other;\n });\n\n /**\n * Checks if `value` is likely an `arguments` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an `arguments` object,\n * else `false`.\n * @example\n *\n * _.isArguments(function() { return arguments; }());\n * // => true\n *\n * _.isArguments([1, 2, 3]);\n * // => false\n */\n var isArguments = baseIsArguments(function() { return arguments; }()) ? baseIsArguments : function(value) {\n return isObjectLike(value) && hasOwnProperty.call(value, 'callee') &&\n !propertyIsEnumerable.call(value, 'callee');\n };\n\n /**\n * Checks if `value` is classified as an `Array` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an array, else `false`.\n * @example\n *\n * _.isArray([1, 2, 3]);\n * // => true\n *\n * _.isArray(document.body.children);\n * // => false\n *\n * _.isArray('abc');\n * // => false\n *\n * _.isArray(_.noop);\n * // => false\n */\n var isArray = Array.isArray;\n\n /**\n * Checks if `value` is classified as an `ArrayBuffer` object.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.\n * @example\n *\n * _.isArrayBuffer(new ArrayBuffer(2));\n * // => true\n *\n * _.isArrayBuffer(new Array(2));\n * // => false\n */\n var isArrayBuffer = nodeIsArrayBuffer ? baseUnary(nodeIsArrayBuffer) : baseIsArrayBuffer;\n\n /**\n * Checks if `value` is array-like. A value is considered array-like if it's\n * not a function and has a `value.length` that's an integer greater than or\n * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is array-like, else `false`.\n * @example\n *\n * _.isArrayLike([1, 2, 3]);\n * // => true\n *\n * _.isArrayLike(document.body.children);\n * // => true\n *\n * _.isArrayLike('abc');\n * // => true\n *\n * _.isArrayLike(_.noop);\n * // => false\n */\n function isArrayLike(value) {\n return value != null && isLength(value.length) && !isFunction(value);\n }\n\n /**\n * This method is like `_.isArrayLike` except that it also checks if `value`\n * is an object.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an array-like object,\n * else `false`.\n * @example\n *\n * _.isArrayLikeObject([1, 2, 3]);\n * // => true\n *\n * _.isArrayLikeObject(document.body.children);\n * // => true\n *\n * _.isArrayLikeObject('abc');\n * // => false\n *\n * _.isArrayLikeObject(_.noop);\n * // => false\n */\n function isArrayLikeObject(value) {\n return isObjectLike(value) && isArrayLike(value);\n }\n\n /**\n * Checks if `value` is classified as a boolean primitive or object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a boolean, else `false`.\n * @example\n *\n * _.isBoolean(false);\n * // => true\n *\n * _.isBoolean(null);\n * // => false\n */\n function isBoolean(value) {\n return value === true || value === false ||\n (isObjectLike(value) && baseGetTag(value) == boolTag);\n }\n\n /**\n * Checks if `value` is a buffer.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a buffer, else `false`.\n * @example\n *\n * _.isBuffer(new Buffer(2));\n * // => true\n *\n * _.isBuffer(new Uint8Array(2));\n * // => false\n */\n var isBuffer = nativeIsBuffer || stubFalse;\n\n /**\n * Checks if `value` is classified as a `Date` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a date object, else `false`.\n * @example\n *\n * _.isDate(new Date);\n * // => true\n *\n * _.isDate('Mon April 23 2012');\n * // => false\n */\n var isDate = nodeIsDate ? baseUnary(nodeIsDate) : baseIsDate;\n\n /**\n * Checks if `value` is likely a DOM element.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a DOM element, else `false`.\n * @example\n *\n * _.isElement(document.body);\n * // => true\n *\n * _.isElement('');\n * // => false\n */\n function isElement(value) {\n return isObjectLike(value) && value.nodeType === 1 && !isPlainObject(value);\n }\n\n /**\n * Checks if `value` is an empty object, collection, map, or set.\n *\n * Objects are considered empty if they have no own enumerable string keyed\n * properties.\n *\n * Array-like values such as `arguments` objects, arrays, buffers, strings, or\n * jQuery-like collections are considered empty if they have a `length` of `0`.\n * Similarly, maps and sets are considered empty if they have a `size` of `0`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is empty, else `false`.\n * @example\n *\n * _.isEmpty(null);\n * // => true\n *\n * _.isEmpty(true);\n * // => true\n *\n * _.isEmpty(1);\n * // => true\n *\n * _.isEmpty([1, 2, 3]);\n * // => false\n *\n * _.isEmpty({ 'a': 1 });\n * // => false\n */\n function isEmpty(value) {\n if (value == null) {\n return true;\n }\n if (isArrayLike(value) &&\n (isArray(value) || typeof value == 'string' || typeof value.splice == 'function' ||\n isBuffer(value) || isTypedArray(value) || isArguments(value))) {\n return !value.length;\n }\n var tag = getTag(value);\n if (tag == mapTag || tag == setTag) {\n return !value.size;\n }\n if (isPrototype(value)) {\n return !baseKeys(value).length;\n }\n for (var key in value) {\n if (hasOwnProperty.call(value, key)) {\n return false;\n }\n }\n return true;\n }\n\n /**\n * Performs a deep comparison between two values to determine if they are\n * equivalent.\n *\n * **Note:** This method supports comparing arrays, array buffers, booleans,\n * date objects, error objects, maps, numbers, `Object` objects, regexes,\n * sets, strings, symbols, and typed arrays. `Object` objects are compared\n * by their own, not inherited, enumerable properties. Functions and DOM\n * nodes are compared by strict equality, i.e. `===`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n * @example\n *\n * var object = { 'a': 1 };\n * var other = { 'a': 1 };\n *\n * _.isEqual(object, other);\n * // => true\n *\n * object === other;\n * // => false\n */\n function isEqual(value, other) {\n return baseIsEqual(value, other);\n }\n\n /**\n * This method is like `_.isEqual` except that it accepts `customizer` which\n * is invoked to compare values. If `customizer` returns `undefined`, comparisons\n * are handled by the method instead. The `customizer` is invoked with up to\n * six arguments: (objValue, othValue [, index|key, object, other, stack]).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @param {Function} [customizer] The function to customize comparisons.\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n * @example\n *\n * function isGreeting(value) {\n * return /^h(?:i|ello)$/.test(value);\n * }\n *\n * function customizer(objValue, othValue) {\n * if (isGreeting(objValue) && isGreeting(othValue)) {\n * return true;\n * }\n * }\n *\n * var array = ['hello', 'goodbye'];\n * var other = ['hi', 'goodbye'];\n *\n * _.isEqualWith(array, other, customizer);\n * // => true\n */\n function isEqualWith(value, other, customizer) {\n customizer = typeof customizer == 'function' ? customizer : undefined;\n var result = customizer ? customizer(value, other) : undefined;\n return result === undefined ? baseIsEqual(value, other, undefined, customizer) : !!result;\n }\n\n /**\n * Checks if `value` is an `Error`, `EvalError`, `RangeError`, `ReferenceError`,\n * `SyntaxError`, `TypeError`, or `URIError` object.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an error object, else `false`.\n * @example\n *\n * _.isError(new Error);\n * // => true\n *\n * _.isError(Error);\n * // => false\n */\n function isError(value) {\n if (!isObjectLike(value)) {\n return false;\n }\n var tag = baseGetTag(value);\n return tag == errorTag || tag == domExcTag ||\n (typeof value.message == 'string' && typeof value.name == 'string' && !isPlainObject(value));\n }\n\n /**\n * Checks if `value` is a finite primitive number.\n *\n * **Note:** This method is based on\n * [`Number.isFinite`](https://mdn.io/Number/isFinite).\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a finite number, else `false`.\n * @example\n *\n * _.isFinite(3);\n * // => true\n *\n * _.isFinite(Number.MIN_VALUE);\n * // => true\n *\n * _.isFinite(Infinity);\n * // => false\n *\n * _.isFinite('3');\n * // => false\n */\n function isFinite(value) {\n return typeof value == 'number' && nativeIsFinite(value);\n }\n\n /**\n * Checks if `value` is classified as a `Function` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a function, else `false`.\n * @example\n *\n * _.isFunction(_);\n * // => true\n *\n * _.isFunction(/abc/);\n * // => false\n */\n function isFunction(value) {\n if (!isObject(value)) {\n return false;\n }\n // The use of `Object#toString` avoids issues with the `typeof` operator\n // in Safari 9 which returns 'object' for typed arrays and other constructors.\n var tag = baseGetTag(value);\n return tag == funcTag || tag == genTag || tag == asyncTag || tag == proxyTag;\n }\n\n /**\n * Checks if `value` is an integer.\n *\n * **Note:** This method is based on\n * [`Number.isInteger`](https://mdn.io/Number/isInteger).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an integer, else `false`.\n * @example\n *\n * _.isInteger(3);\n * // => true\n *\n * _.isInteger(Number.MIN_VALUE);\n * // => false\n *\n * _.isInteger(Infinity);\n * // => false\n *\n * _.isInteger('3');\n * // => false\n */\n function isInteger(value) {\n return typeof value == 'number' && value == toInteger(value);\n }\n\n /**\n * Checks if `value` is a valid array-like length.\n *\n * **Note:** This method is loosely based on\n * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.\n * @example\n *\n * _.isLength(3);\n * // => true\n *\n * _.isLength(Number.MIN_VALUE);\n * // => false\n *\n * _.isLength(Infinity);\n * // => false\n *\n * _.isLength('3');\n * // => false\n */\n function isLength(value) {\n return typeof value == 'number' &&\n value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;\n }\n\n /**\n * Checks if `value` is the\n * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)\n * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an object, else `false`.\n * @example\n *\n * _.isObject({});\n * // => true\n *\n * _.isObject([1, 2, 3]);\n * // => true\n *\n * _.isObject(_.noop);\n * // => true\n *\n * _.isObject(null);\n * // => false\n */\n function isObject(value) {\n var type = typeof value;\n return value != null && (type == 'object' || type == 'function');\n }\n\n /**\n * Checks if `value` is object-like. A value is object-like if it's not `null`\n * and has a `typeof` result of \"object\".\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is object-like, else `false`.\n * @example\n *\n * _.isObjectLike({});\n * // => true\n *\n * _.isObjectLike([1, 2, 3]);\n * // => true\n *\n * _.isObjectLike(_.noop);\n * // => false\n *\n * _.isObjectLike(null);\n * // => false\n */\n function isObjectLike(value) {\n return value != null && typeof value == 'object';\n }\n\n /**\n * Checks if `value` is classified as a `Map` object.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a map, else `false`.\n * @example\n *\n * _.isMap(new Map);\n * // => true\n *\n * _.isMap(new WeakMap);\n * // => false\n */\n var isMap = nodeIsMap ? baseUnary(nodeIsMap) : baseIsMap;\n\n /**\n * Performs a partial deep comparison between `object` and `source` to\n * determine if `object` contains equivalent property values.\n *\n * **Note:** This method is equivalent to `_.matches` when `source` is\n * partially applied.\n *\n * Partial comparisons will match empty array and empty object `source`\n * values against any array or object value, respectively. See `_.isEqual`\n * for a list of supported value comparisons.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Lang\n * @param {Object} object The object to inspect.\n * @param {Object} source The object of property values to match.\n * @returns {boolean} Returns `true` if `object` is a match, else `false`.\n * @example\n *\n * var object = { 'a': 1, 'b': 2 };\n *\n * _.isMatch(object, { 'b': 2 });\n * // => true\n *\n * _.isMatch(object, { 'b': 1 });\n * // => false\n */\n function isMatch(object, source) {\n return object === source || baseIsMatch(object, source, getMatchData(source));\n }\n\n /**\n * This method is like `_.isMatch` except that it accepts `customizer` which\n * is invoked to compare values. If `customizer` returns `undefined`, comparisons\n * are handled by the method instead. The `customizer` is invoked with five\n * arguments: (objValue, srcValue, index|key, object, source).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {Object} object The object to inspect.\n * @param {Object} source The object of property values to match.\n * @param {Function} [customizer] The function to customize comparisons.\n * @returns {boolean} Returns `true` if `object` is a match, else `false`.\n * @example\n *\n * function isGreeting(value) {\n * return /^h(?:i|ello)$/.test(value);\n * }\n *\n * function customizer(objValue, srcValue) {\n * if (isGreeting(objValue) && isGreeting(srcValue)) {\n * return true;\n * }\n * }\n *\n * var object = { 'greeting': 'hello' };\n * var source = { 'greeting': 'hi' };\n *\n * _.isMatchWith(object, source, customizer);\n * // => true\n */\n function isMatchWith(object, source, customizer) {\n customizer = typeof customizer == 'function' ? customizer : undefined;\n return baseIsMatch(object, source, getMatchData(source), customizer);\n }\n\n /**\n * Checks if `value` is `NaN`.\n *\n * **Note:** This method is based on\n * [`Number.isNaN`](https://mdn.io/Number/isNaN) and is not the same as\n * global [`isNaN`](https://mdn.io/isNaN) which returns `true` for\n * `undefined` and other non-number values.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.\n * @example\n *\n * _.isNaN(NaN);\n * // => true\n *\n * _.isNaN(new Number(NaN));\n * // => true\n *\n * isNaN(undefined);\n * // => true\n *\n * _.isNaN(undefined);\n * // => false\n */\n function isNaN(value) {\n // An `NaN` primitive is the only value that is not equal to itself.\n // Perform the `toStringTag` check first to avoid errors with some\n // ActiveX objects in IE.\n return isNumber(value) && value != +value;\n }\n\n /**\n * Checks if `value` is a pristine native function.\n *\n * **Note:** This method can't reliably detect native functions in the presence\n * of the core-js package because core-js circumvents this kind of detection.\n * Despite multiple requests, the core-js maintainer has made it clear: any\n * attempt to fix the detection will be obstructed. As a result, we're left\n * with little choice but to throw an error. Unfortunately, this also affects\n * packages, like [babel-polyfill](https://www.npmjs.com/package/babel-polyfill),\n * which rely on core-js.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a native function,\n * else `false`.\n * @example\n *\n * _.isNative(Array.prototype.push);\n * // => true\n *\n * _.isNative(_);\n * // => false\n */\n function isNative(value) {\n if (isMaskable(value)) {\n throw new Error(CORE_ERROR_TEXT);\n }\n return baseIsNative(value);\n }\n\n /**\n * Checks if `value` is `null`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is `null`, else `false`.\n * @example\n *\n * _.isNull(null);\n * // => true\n *\n * _.isNull(void 0);\n * // => false\n */\n function isNull(value) {\n return value === null;\n }\n\n /**\n * Checks if `value` is `null` or `undefined`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is nullish, else `false`.\n * @example\n *\n * _.isNil(null);\n * // => true\n *\n * _.isNil(void 0);\n * // => true\n *\n * _.isNil(NaN);\n * // => false\n */\n function isNil(value) {\n return value == null;\n }\n\n /**\n * Checks if `value` is classified as a `Number` primitive or object.\n *\n * **Note:** To exclude `Infinity`, `-Infinity`, and `NaN`, which are\n * classified as numbers, use the `_.isFinite` method.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a number, else `false`.\n * @example\n *\n * _.isNumber(3);\n * // => true\n *\n * _.isNumber(Number.MIN_VALUE);\n * // => true\n *\n * _.isNumber(Infinity);\n * // => true\n *\n * _.isNumber('3');\n * // => false\n */\n function isNumber(value) {\n return typeof value == 'number' ||\n (isObjectLike(value) && baseGetTag(value) == numberTag);\n }\n\n /**\n * Checks if `value` is a plain object, that is, an object created by the\n * `Object` constructor or one with a `[[Prototype]]` of `null`.\n *\n * @static\n * @memberOf _\n * @since 0.8.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a plain object, else `false`.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * }\n *\n * _.isPlainObject(new Foo);\n * // => false\n *\n * _.isPlainObject([1, 2, 3]);\n * // => false\n *\n * _.isPlainObject({ 'x': 0, 'y': 0 });\n * // => true\n *\n * _.isPlainObject(Object.create(null));\n * // => true\n */\n function isPlainObject(value) {\n if (!isObjectLike(value) || baseGetTag(value) != objectTag) {\n return false;\n }\n var proto = getPrototype(value);\n if (proto === null) {\n return true;\n }\n var Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor;\n return typeof Ctor == 'function' && Ctor instanceof Ctor &&\n funcToString.call(Ctor) == objectCtorString;\n }\n\n /**\n * Checks if `value` is classified as a `RegExp` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.\n * @example\n *\n * _.isRegExp(/abc/);\n * // => true\n *\n * _.isRegExp('/abc/');\n * // => false\n */\n var isRegExp = nodeIsRegExp ? baseUnary(nodeIsRegExp) : baseIsRegExp;\n\n /**\n * Checks if `value` is a safe integer. An integer is safe if it's an IEEE-754\n * double precision number which isn't the result of a rounded unsafe integer.\n *\n * **Note:** This method is based on\n * [`Number.isSafeInteger`](https://mdn.io/Number/isSafeInteger).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a safe integer, else `false`.\n * @example\n *\n * _.isSafeInteger(3);\n * // => true\n *\n * _.isSafeInteger(Number.MIN_VALUE);\n * // => false\n *\n * _.isSafeInteger(Infinity);\n * // => false\n *\n * _.isSafeInteger('3');\n * // => false\n */\n function isSafeInteger(value) {\n return isInteger(value) && value >= -MAX_SAFE_INTEGER && value <= MAX_SAFE_INTEGER;\n }\n\n /**\n * Checks if `value` is classified as a `Set` object.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a set, else `false`.\n * @example\n *\n * _.isSet(new Set);\n * // => true\n *\n * _.isSet(new WeakSet);\n * // => false\n */\n var isSet = nodeIsSet ? baseUnary(nodeIsSet) : baseIsSet;\n\n /**\n * Checks if `value` is classified as a `String` primitive or object.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a string, else `false`.\n * @example\n *\n * _.isString('abc');\n * // => true\n *\n * _.isString(1);\n * // => false\n */\n function isString(value) {\n return typeof value == 'string' ||\n (!isArray(value) && isObjectLike(value) && baseGetTag(value) == stringTag);\n }\n\n /**\n * Checks if `value` is classified as a `Symbol` primitive or object.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.\n * @example\n *\n * _.isSymbol(Symbol.iterator);\n * // => true\n *\n * _.isSymbol('abc');\n * // => false\n */\n function isSymbol(value) {\n return typeof value == 'symbol' ||\n (isObjectLike(value) && baseGetTag(value) == symbolTag);\n }\n\n /**\n * Checks if `value` is classified as a typed array.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.\n * @example\n *\n * _.isTypedArray(new Uint8Array);\n * // => true\n *\n * _.isTypedArray([]);\n * // => false\n */\n var isTypedArray = nodeIsTypedArray ? baseUnary(nodeIsTypedArray) : baseIsTypedArray;\n\n /**\n * Checks if `value` is `undefined`.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is `undefined`, else `false`.\n * @example\n *\n * _.isUndefined(void 0);\n * // => true\n *\n * _.isUndefined(null);\n * // => false\n */\n function isUndefined(value) {\n return value === undefined;\n }\n\n /**\n * Checks if `value` is classified as a `WeakMap` object.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a weak map, else `false`.\n * @example\n *\n * _.isWeakMap(new WeakMap);\n * // => true\n *\n * _.isWeakMap(new Map);\n * // => false\n */\n function isWeakMap(value) {\n return isObjectLike(value) && getTag(value) == weakMapTag;\n }\n\n /**\n * Checks if `value` is classified as a `WeakSet` object.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a weak set, else `false`.\n * @example\n *\n * _.isWeakSet(new WeakSet);\n * // => true\n *\n * _.isWeakSet(new Set);\n * // => false\n */\n function isWeakSet(value) {\n return isObjectLike(value) && baseGetTag(value) == weakSetTag;\n }\n\n /**\n * Checks if `value` is less than `other`.\n *\n * @static\n * @memberOf _\n * @since 3.9.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if `value` is less than `other`,\n * else `false`.\n * @see _.gt\n * @example\n *\n * _.lt(1, 3);\n * // => true\n *\n * _.lt(3, 3);\n * // => false\n *\n * _.lt(3, 1);\n * // => false\n */\n var lt = createRelationalOperation(baseLt);\n\n /**\n * Checks if `value` is less than or equal to `other`.\n *\n * @static\n * @memberOf _\n * @since 3.9.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if `value` is less than or equal to\n * `other`, else `false`.\n * @see _.gte\n * @example\n *\n * _.lte(1, 3);\n * // => true\n *\n * _.lte(3, 3);\n * // => true\n *\n * _.lte(3, 1);\n * // => false\n */\n var lte = createRelationalOperation(function(value, other) {\n return value <= other;\n });\n\n /**\n * Converts `value` to an array.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {Array} Returns the converted array.\n * @example\n *\n * _.toArray({ 'a': 1, 'b': 2 });\n * // => [1, 2]\n *\n * _.toArray('abc');\n * // => ['a', 'b', 'c']\n *\n * _.toArray(1);\n * // => []\n *\n * _.toArray(null);\n * // => []\n */\n function toArray(value) {\n if (!value) {\n return [];\n }\n if (isArrayLike(value)) {\n return isString(value) ? stringToArray(value) : copyArray(value);\n }\n if (symIterator && value[symIterator]) {\n return iteratorToArray(value[symIterator]());\n }\n var tag = getTag(value),\n func = tag == mapTag ? mapToArray : (tag == setTag ? setToArray : values);\n\n return func(value);\n }\n\n /**\n * Converts `value` to a finite number.\n *\n * @static\n * @memberOf _\n * @since 4.12.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {number} Returns the converted number.\n * @example\n *\n * _.toFinite(3.2);\n * // => 3.2\n *\n * _.toFinite(Number.MIN_VALUE);\n * // => 5e-324\n *\n * _.toFinite(Infinity);\n * // => 1.7976931348623157e+308\n *\n * _.toFinite('3.2');\n * // => 3.2\n */\n function toFinite(value) {\n if (!value) {\n return value === 0 ? value : 0;\n }\n value = toNumber(value);\n if (value === INFINITY || value === -INFINITY) {\n var sign = (value < 0 ? -1 : 1);\n return sign * MAX_INTEGER;\n }\n return value === value ? value : 0;\n }\n\n /**\n * Converts `value` to an integer.\n *\n * **Note:** This method is loosely based on\n * [`ToInteger`](http://www.ecma-international.org/ecma-262/7.0/#sec-tointeger).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {number} Returns the converted integer.\n * @example\n *\n * _.toInteger(3.2);\n * // => 3\n *\n * _.toInteger(Number.MIN_VALUE);\n * // => 0\n *\n * _.toInteger(Infinity);\n * // => 1.7976931348623157e+308\n *\n * _.toInteger('3.2');\n * // => 3\n */\n function toInteger(value) {\n var result = toFinite(value),\n remainder = result % 1;\n\n return result === result ? (remainder ? result - remainder : result) : 0;\n }\n\n /**\n * Converts `value` to an integer suitable for use as the length of an\n * array-like object.\n *\n * **Note:** This method is based on\n * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {number} Returns the converted integer.\n * @example\n *\n * _.toLength(3.2);\n * // => 3\n *\n * _.toLength(Number.MIN_VALUE);\n * // => 0\n *\n * _.toLength(Infinity);\n * // => 4294967295\n *\n * _.toLength('3.2');\n * // => 3\n */\n function toLength(value) {\n return value ? baseClamp(toInteger(value), 0, MAX_ARRAY_LENGTH) : 0;\n }\n\n /**\n * Converts `value` to a number.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to process.\n * @returns {number} Returns the number.\n * @example\n *\n * _.toNumber(3.2);\n * // => 3.2\n *\n * _.toNumber(Number.MIN_VALUE);\n * // => 5e-324\n *\n * _.toNumber(Infinity);\n * // => Infinity\n *\n * _.toNumber('3.2');\n * // => 3.2\n */\n function toNumber(value) {\n if (typeof value == 'number') {\n return value;\n }\n if (isSymbol(value)) {\n return NAN;\n }\n if (isObject(value)) {\n var other = typeof value.valueOf == 'function' ? value.valueOf() : value;\n value = isObject(other) ? (other + '') : other;\n }\n if (typeof value != 'string') {\n return value === 0 ? value : +value;\n }\n value = baseTrim(value);\n var isBinary = reIsBinary.test(value);\n return (isBinary || reIsOctal.test(value))\n ? freeParseInt(value.slice(2), isBinary ? 2 : 8)\n : (reIsBadHex.test(value) ? NAN : +value);\n }\n\n /**\n * Converts `value` to a plain object flattening inherited enumerable string\n * keyed properties of `value` to own properties of the plain object.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {Object} Returns the converted plain object.\n * @example\n *\n * function Foo() {\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.assign({ 'a': 1 }, new Foo);\n * // => { 'a': 1, 'b': 2 }\n *\n * _.assign({ 'a': 1 }, _.toPlainObject(new Foo));\n * // => { 'a': 1, 'b': 2, 'c': 3 }\n */\n function toPlainObject(value) {\n return copyObject(value, keysIn(value));\n }\n\n /**\n * Converts `value` to a safe integer. A safe integer can be compared and\n * represented correctly.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {number} Returns the converted integer.\n * @example\n *\n * _.toSafeInteger(3.2);\n * // => 3\n *\n * _.toSafeInteger(Number.MIN_VALUE);\n * // => 0\n *\n * _.toSafeInteger(Infinity);\n * // => 9007199254740991\n *\n * _.toSafeInteger('3.2');\n * // => 3\n */\n function toSafeInteger(value) {\n return value\n ? baseClamp(toInteger(value), -MAX_SAFE_INTEGER, MAX_SAFE_INTEGER)\n : (value === 0 ? value : 0);\n }\n\n /**\n * Converts `value` to a string. An empty string is returned for `null`\n * and `undefined` values. The sign of `-0` is preserved.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {string} Returns the converted string.\n * @example\n *\n * _.toString(null);\n * // => ''\n *\n * _.toString(-0);\n * // => '-0'\n *\n * _.toString([1, 2, 3]);\n * // => '1,2,3'\n */\n function toString(value) {\n return value == null ? '' : baseToString(value);\n }\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Assigns own enumerable string keyed properties of source objects to the\n * destination object. Source objects are applied from left to right.\n * Subsequent sources overwrite property assignments of previous sources.\n *\n * **Note:** This method mutates `object` and is loosely based on\n * [`Object.assign`](https://mdn.io/Object/assign).\n *\n * @static\n * @memberOf _\n * @since 0.10.0\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} [sources] The source objects.\n * @returns {Object} Returns `object`.\n * @see _.assignIn\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * }\n *\n * function Bar() {\n * this.c = 3;\n * }\n *\n * Foo.prototype.b = 2;\n * Bar.prototype.d = 4;\n *\n * _.assign({ 'a': 0 }, new Foo, new Bar);\n * // => { 'a': 1, 'c': 3 }\n */\n var assign = createAssigner(function(object, source) {\n if (isPrototype(source) || isArrayLike(source)) {\n copyObject(source, keys(source), object);\n return;\n }\n for (var key in source) {\n if (hasOwnProperty.call(source, key)) {\n assignValue(object, key, source[key]);\n }\n }\n });\n\n /**\n * This method is like `_.assign` except that it iterates over own and\n * inherited source properties.\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @alias extend\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} [sources] The source objects.\n * @returns {Object} Returns `object`.\n * @see _.assign\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * }\n *\n * function Bar() {\n * this.c = 3;\n * }\n *\n * Foo.prototype.b = 2;\n * Bar.prototype.d = 4;\n *\n * _.assignIn({ 'a': 0 }, new Foo, new Bar);\n * // => { 'a': 1, 'b': 2, 'c': 3, 'd': 4 }\n */\n var assignIn = createAssigner(function(object, source) {\n copyObject(source, keysIn(source), object);\n });\n\n /**\n * This method is like `_.assignIn` except that it accepts `customizer`\n * which is invoked to produce the assigned values. If `customizer` returns\n * `undefined`, assignment is handled by the method instead. The `customizer`\n * is invoked with five arguments: (objValue, srcValue, key, object, source).\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @alias extendWith\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} sources The source objects.\n * @param {Function} [customizer] The function to customize assigned values.\n * @returns {Object} Returns `object`.\n * @see _.assignWith\n * @example\n *\n * function customizer(objValue, srcValue) {\n * return _.isUndefined(objValue) ? srcValue : objValue;\n * }\n *\n * var defaults = _.partialRight(_.assignInWith, customizer);\n *\n * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });\n * // => { 'a': 1, 'b': 2 }\n */\n var assignInWith = createAssigner(function(object, source, srcIndex, customizer) {\n copyObject(source, keysIn(source), object, customizer);\n });\n\n /**\n * This method is like `_.assign` except that it accepts `customizer`\n * which is invoked to produce the assigned values. If `customizer` returns\n * `undefined`, assignment is handled by the method instead. The `customizer`\n * is invoked with five arguments: (objValue, srcValue, key, object, source).\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} sources The source objects.\n * @param {Function} [customizer] The function to customize assigned values.\n * @returns {Object} Returns `object`.\n * @see _.assignInWith\n * @example\n *\n * function customizer(objValue, srcValue) {\n * return _.isUndefined(objValue) ? srcValue : objValue;\n * }\n *\n * var defaults = _.partialRight(_.assignWith, customizer);\n *\n * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });\n * // => { 'a': 1, 'b': 2 }\n */\n var assignWith = createAssigner(function(object, source, srcIndex, customizer) {\n copyObject(source, keys(source), object, customizer);\n });\n\n /**\n * Creates an array of values corresponding to `paths` of `object`.\n *\n * @static\n * @memberOf _\n * @since 1.0.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {...(string|string[])} [paths] The property paths to pick.\n * @returns {Array} Returns the picked values.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };\n *\n * _.at(object, ['a[0].b.c', 'a[1]']);\n * // => [3, 4]\n */\n var at = flatRest(baseAt);\n\n /**\n * Creates an object that inherits from the `prototype` object. If a\n * `properties` object is given, its own enumerable string keyed properties\n * are assigned to the created object.\n *\n * @static\n * @memberOf _\n * @since 2.3.0\n * @category Object\n * @param {Object} prototype The object to inherit from.\n * @param {Object} [properties] The properties to assign to the object.\n * @returns {Object} Returns the new object.\n * @example\n *\n * function Shape() {\n * this.x = 0;\n * this.y = 0;\n * }\n *\n * function Circle() {\n * Shape.call(this);\n * }\n *\n * Circle.prototype = _.create(Shape.prototype, {\n * 'constructor': Circle\n * });\n *\n * var circle = new Circle;\n * circle instanceof Circle;\n * // => true\n *\n * circle instanceof Shape;\n * // => true\n */\n function create(prototype, properties) {\n var result = baseCreate(prototype);\n return properties == null ? result : baseAssign(result, properties);\n }\n\n /**\n * Assigns own and inherited enumerable string keyed properties of source\n * objects to the destination object for all destination properties that\n * resolve to `undefined`. Source objects are applied from left to right.\n * Once a property is set, additional values of the same property are ignored.\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} [sources] The source objects.\n * @returns {Object} Returns `object`.\n * @see _.defaultsDeep\n * @example\n *\n * _.defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });\n * // => { 'a': 1, 'b': 2 }\n */\n var defaults = baseRest(function(object, sources) {\n object = Object(object);\n\n var index = -1;\n var length = sources.length;\n var guard = length > 2 ? sources[2] : undefined;\n\n if (guard && isIterateeCall(sources[0], sources[1], guard)) {\n length = 1;\n }\n\n while (++index < length) {\n var source = sources[index];\n var props = keysIn(source);\n var propsIndex = -1;\n var propsLength = props.length;\n\n while (++propsIndex < propsLength) {\n var key = props[propsIndex];\n var value = object[key];\n\n if (value === undefined ||\n (eq(value, objectProto[key]) && !hasOwnProperty.call(object, key))) {\n object[key] = source[key];\n }\n }\n }\n\n return object;\n });\n\n /**\n * This method is like `_.defaults` except that it recursively assigns\n * default properties.\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 3.10.0\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} [sources] The source objects.\n * @returns {Object} Returns `object`.\n * @see _.defaults\n * @example\n *\n * _.defaultsDeep({ 'a': { 'b': 2 } }, { 'a': { 'b': 1, 'c': 3 } });\n * // => { 'a': { 'b': 2, 'c': 3 } }\n */\n var defaultsDeep = baseRest(function(args) {\n args.push(undefined, customDefaultsMerge);\n return apply(mergeWith, undefined, args);\n });\n\n /**\n * This method is like `_.find` except that it returns the key of the first\n * element `predicate` returns truthy for instead of the element itself.\n *\n * @static\n * @memberOf _\n * @since 1.1.0\n * @category Object\n * @param {Object} object The object to inspect.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {string|undefined} Returns the key of the matched element,\n * else `undefined`.\n * @example\n *\n * var users = {\n * 'barney': { 'age': 36, 'active': true },\n * 'fred': { 'age': 40, 'active': false },\n * 'pebbles': { 'age': 1, 'active': true }\n * };\n *\n * _.findKey(users, function(o) { return o.age < 40; });\n * // => 'barney' (iteration order is not guaranteed)\n *\n * // The `_.matches` iteratee shorthand.\n * _.findKey(users, { 'age': 1, 'active': true });\n * // => 'pebbles'\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.findKey(users, ['active', false]);\n * // => 'fred'\n *\n * // The `_.property` iteratee shorthand.\n * _.findKey(users, 'active');\n * // => 'barney'\n */\n function findKey(object, predicate) {\n return baseFindKey(object, getIteratee(predicate, 3), baseForOwn);\n }\n\n /**\n * This method is like `_.findKey` except that it iterates over elements of\n * a collection in the opposite order.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Object\n * @param {Object} object The object to inspect.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {string|undefined} Returns the key of the matched element,\n * else `undefined`.\n * @example\n *\n * var users = {\n * 'barney': { 'age': 36, 'active': true },\n * 'fred': { 'age': 40, 'active': false },\n * 'pebbles': { 'age': 1, 'active': true }\n * };\n *\n * _.findLastKey(users, function(o) { return o.age < 40; });\n * // => returns 'pebbles' assuming `_.findKey` returns 'barney'\n *\n * // The `_.matches` iteratee shorthand.\n * _.findLastKey(users, { 'age': 36, 'active': true });\n * // => 'barney'\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.findLastKey(users, ['active', false]);\n * // => 'fred'\n *\n * // The `_.property` iteratee shorthand.\n * _.findLastKey(users, 'active');\n * // => 'pebbles'\n */\n function findLastKey(object, predicate) {\n return baseFindKey(object, getIteratee(predicate, 3), baseForOwnRight);\n }\n\n /**\n * Iterates over own and inherited enumerable string keyed properties of an\n * object and invokes `iteratee` for each property. The iteratee is invoked\n * with three arguments: (value, key, object). Iteratee functions may exit\n * iteration early by explicitly returning `false`.\n *\n * @static\n * @memberOf _\n * @since 0.3.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Object} Returns `object`.\n * @see _.forInRight\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.forIn(new Foo, function(value, key) {\n * console.log(key);\n * });\n * // => Logs 'a', 'b', then 'c' (iteration order is not guaranteed).\n */\n function forIn(object, iteratee) {\n return object == null\n ? object\n : baseFor(object, getIteratee(iteratee, 3), keysIn);\n }\n\n /**\n * This method is like `_.forIn` except that it iterates over properties of\n * `object` in the opposite order.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Object} Returns `object`.\n * @see _.forIn\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.forInRight(new Foo, function(value, key) {\n * console.log(key);\n * });\n * // => Logs 'c', 'b', then 'a' assuming `_.forIn` logs 'a', 'b', then 'c'.\n */\n function forInRight(object, iteratee) {\n return object == null\n ? object\n : baseForRight(object, getIteratee(iteratee, 3), keysIn);\n }\n\n /**\n * Iterates over own enumerable string keyed properties of an object and\n * invokes `iteratee` for each property. The iteratee is invoked with three\n * arguments: (value, key, object). Iteratee functions may exit iteration\n * early by explicitly returning `false`.\n *\n * @static\n * @memberOf _\n * @since 0.3.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Object} Returns `object`.\n * @see _.forOwnRight\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.forOwn(new Foo, function(value, key) {\n * console.log(key);\n * });\n * // => Logs 'a' then 'b' (iteration order is not guaranteed).\n */\n function forOwn(object, iteratee) {\n return object && baseForOwn(object, getIteratee(iteratee, 3));\n }\n\n /**\n * This method is like `_.forOwn` except that it iterates over properties of\n * `object` in the opposite order.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Object} Returns `object`.\n * @see _.forOwn\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.forOwnRight(new Foo, function(value, key) {\n * console.log(key);\n * });\n * // => Logs 'b' then 'a' assuming `_.forOwn` logs 'a' then 'b'.\n */\n function forOwnRight(object, iteratee) {\n return object && baseForOwnRight(object, getIteratee(iteratee, 3));\n }\n\n /**\n * Creates an array of function property names from own enumerable properties\n * of `object`.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The object to inspect.\n * @returns {Array} Returns the function names.\n * @see _.functionsIn\n * @example\n *\n * function Foo() {\n * this.a = _.constant('a');\n * this.b = _.constant('b');\n * }\n *\n * Foo.prototype.c = _.constant('c');\n *\n * _.functions(new Foo);\n * // => ['a', 'b']\n */\n function functions(object) {\n return object == null ? [] : baseFunctions(object, keys(object));\n }\n\n /**\n * Creates an array of function property names from own and inherited\n * enumerable properties of `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The object to inspect.\n * @returns {Array} Returns the function names.\n * @see _.functions\n * @example\n *\n * function Foo() {\n * this.a = _.constant('a');\n * this.b = _.constant('b');\n * }\n *\n * Foo.prototype.c = _.constant('c');\n *\n * _.functionsIn(new Foo);\n * // => ['a', 'b', 'c']\n */\n function functionsIn(object) {\n return object == null ? [] : baseFunctions(object, keysIn(object));\n }\n\n /**\n * Gets the value at `path` of `object`. If the resolved value is\n * `undefined`, the `defaultValue` is returned in its place.\n *\n * @static\n * @memberOf _\n * @since 3.7.0\n * @category Object\n * @param {Object} object The object to query.\n * @param {Array|string} path The path of the property to get.\n * @param {*} [defaultValue] The value returned for `undefined` resolved values.\n * @returns {*} Returns the resolved value.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': 3 } }] };\n *\n * _.get(object, 'a[0].b.c');\n * // => 3\n *\n * _.get(object, ['a', '0', 'b', 'c']);\n * // => 3\n *\n * _.get(object, 'a.b.c', 'default');\n * // => 'default'\n */\n function get(object, path, defaultValue) {\n var result = object == null ? undefined : baseGet(object, path);\n return result === undefined ? defaultValue : result;\n }\n\n /**\n * Checks if `path` is a direct property of `object`.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The object to query.\n * @param {Array|string} path The path to check.\n * @returns {boolean} Returns `true` if `path` exists, else `false`.\n * @example\n *\n * var object = { 'a': { 'b': 2 } };\n * var other = _.create({ 'a': _.create({ 'b': 2 }) });\n *\n * _.has(object, 'a');\n * // => true\n *\n * _.has(object, 'a.b');\n * // => true\n *\n * _.has(object, ['a', 'b']);\n * // => true\n *\n * _.has(other, 'a');\n * // => false\n */\n function has(object, path) {\n return object != null && hasPath(object, path, baseHas);\n }\n\n /**\n * Checks if `path` is a direct or inherited property of `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The object to query.\n * @param {Array|string} path The path to check.\n * @returns {boolean} Returns `true` if `path` exists, else `false`.\n * @example\n *\n * var object = _.create({ 'a': _.create({ 'b': 2 }) });\n *\n * _.hasIn(object, 'a');\n * // => true\n *\n * _.hasIn(object, 'a.b');\n * // => true\n *\n * _.hasIn(object, ['a', 'b']);\n * // => true\n *\n * _.hasIn(object, 'b');\n * // => false\n */\n function hasIn(object, path) {\n return object != null && hasPath(object, path, baseHasIn);\n }\n\n /**\n * Creates an object composed of the inverted keys and values of `object`.\n * If `object` contains duplicate values, subsequent values overwrite\n * property assignments of previous values.\n *\n * @static\n * @memberOf _\n * @since 0.7.0\n * @category Object\n * @param {Object} object The object to invert.\n * @returns {Object} Returns the new inverted object.\n * @example\n *\n * var object = { 'a': 1, 'b': 2, 'c': 1 };\n *\n * _.invert(object);\n * // => { '1': 'c', '2': 'b' }\n */\n var invert = createInverter(function(result, value, key) {\n if (value != null &&\n typeof value.toString != 'function') {\n value = nativeObjectToString.call(value);\n }\n\n result[value] = key;\n }, constant(identity));\n\n /**\n * This method is like `_.invert` except that the inverted object is generated\n * from the results of running each element of `object` thru `iteratee`. The\n * corresponding inverted value of each inverted key is an array of keys\n * responsible for generating the inverted value. The iteratee is invoked\n * with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.1.0\n * @category Object\n * @param {Object} object The object to invert.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {Object} Returns the new inverted object.\n * @example\n *\n * var object = { 'a': 1, 'b': 2, 'c': 1 };\n *\n * _.invertBy(object);\n * // => { '1': ['a', 'c'], '2': ['b'] }\n *\n * _.invertBy(object, function(value) {\n * return 'group' + value;\n * });\n * // => { 'group1': ['a', 'c'], 'group2': ['b'] }\n */\n var invertBy = createInverter(function(result, value, key) {\n if (value != null &&\n typeof value.toString != 'function') {\n value = nativeObjectToString.call(value);\n }\n\n if (hasOwnProperty.call(result, value)) {\n result[value].push(key);\n } else {\n result[value] = [key];\n }\n }, getIteratee);\n\n /**\n * Invokes the method at `path` of `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The object to query.\n * @param {Array|string} path The path of the method to invoke.\n * @param {...*} [args] The arguments to invoke the method with.\n * @returns {*} Returns the result of the invoked method.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': [1, 2, 3, 4] } }] };\n *\n * _.invoke(object, 'a[0].b.c.slice', 1, 3);\n * // => [2, 3]\n */\n var invoke = baseRest(baseInvoke);\n\n /**\n * Creates an array of the own enumerable property names of `object`.\n *\n * **Note:** Non-object values are coerced to objects. See the\n * [ES spec](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)\n * for more details.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.keys(new Foo);\n * // => ['a', 'b'] (iteration order is not guaranteed)\n *\n * _.keys('hi');\n * // => ['0', '1']\n */\n function keys(object) {\n return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object);\n }\n\n /**\n * Creates an array of the own and inherited enumerable property names of `object`.\n *\n * **Note:** Non-object values are coerced to objects.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.keysIn(new Foo);\n * // => ['a', 'b', 'c'] (iteration order is not guaranteed)\n */\n function keysIn(object) {\n return isArrayLike(object) ? arrayLikeKeys(object, true) : baseKeysIn(object);\n }\n\n /**\n * The opposite of `_.mapValues`; this method creates an object with the\n * same values as `object` and keys generated by running each own enumerable\n * string keyed property of `object` thru `iteratee`. The iteratee is invoked\n * with three arguments: (value, key, object).\n *\n * @static\n * @memberOf _\n * @since 3.8.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Object} Returns the new mapped object.\n * @see _.mapValues\n * @example\n *\n * _.mapKeys({ 'a': 1, 'b': 2 }, function(value, key) {\n * return key + value;\n * });\n * // => { 'a1': 1, 'b2': 2 }\n */\n function mapKeys(object, iteratee) {\n var result = {};\n iteratee = getIteratee(iteratee, 3);\n\n baseForOwn(object, function(value, key, object) {\n baseAssignValue(result, iteratee(value, key, object), value);\n });\n return result;\n }\n\n /**\n * Creates an object with the same keys as `object` and values generated\n * by running each own enumerable string keyed property of `object` thru\n * `iteratee`. The iteratee is invoked with three arguments:\n * (value, key, object).\n *\n * @static\n * @memberOf _\n * @since 2.4.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Object} Returns the new mapped object.\n * @see _.mapKeys\n * @example\n *\n * var users = {\n * 'fred': { 'user': 'fred', 'age': 40 },\n * 'pebbles': { 'user': 'pebbles', 'age': 1 }\n * };\n *\n * _.mapValues(users, function(o) { return o.age; });\n * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)\n *\n * // The `_.property` iteratee shorthand.\n * _.mapValues(users, 'age');\n * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)\n */\n function mapValues(object, iteratee) {\n var result = {};\n iteratee = getIteratee(iteratee, 3);\n\n baseForOwn(object, function(value, key, object) {\n baseAssignValue(result, key, iteratee(value, key, object));\n });\n return result;\n }\n\n /**\n * This method is like `_.assign` except that it recursively merges own and\n * inherited enumerable string keyed properties of source objects into the\n * destination object. Source properties that resolve to `undefined` are\n * skipped if a destination value exists. Array and plain object properties\n * are merged recursively. Other objects and value types are overridden by\n * assignment. Source objects are applied from left to right. Subsequent\n * sources overwrite property assignments of previous sources.\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 0.5.0\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} [sources] The source objects.\n * @returns {Object} Returns `object`.\n * @example\n *\n * var object = {\n * 'a': [{ 'b': 2 }, { 'd': 4 }]\n * };\n *\n * var other = {\n * 'a': [{ 'c': 3 }, { 'e': 5 }]\n * };\n *\n * _.merge(object, other);\n * // => { 'a': [{ 'b': 2, 'c': 3 }, { 'd': 4, 'e': 5 }] }\n */\n var merge = createAssigner(function(object, source, srcIndex) {\n baseMerge(object, source, srcIndex);\n });\n\n /**\n * This method is like `_.merge` except that it accepts `customizer` which\n * is invoked to produce the merged values of the destination and source\n * properties. If `customizer` returns `undefined`, merging is handled by the\n * method instead. The `customizer` is invoked with six arguments:\n * (objValue, srcValue, key, object, source, stack).\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} sources The source objects.\n * @param {Function} customizer The function to customize assigned values.\n * @returns {Object} Returns `object`.\n * @example\n *\n * function customizer(objValue, srcValue) {\n * if (_.isArray(objValue)) {\n * return objValue.concat(srcValue);\n * }\n * }\n *\n * var object = { 'a': [1], 'b': [2] };\n * var other = { 'a': [3], 'b': [4] };\n *\n * _.mergeWith(object, other, customizer);\n * // => { 'a': [1, 3], 'b': [2, 4] }\n */\n var mergeWith = createAssigner(function(object, source, srcIndex, customizer) {\n baseMerge(object, source, srcIndex, customizer);\n });\n\n /**\n * The opposite of `_.pick`; this method creates an object composed of the\n * own and inherited enumerable property paths of `object` that are not omitted.\n *\n * **Note:** This method is considerably slower than `_.pick`.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The source object.\n * @param {...(string|string[])} [paths] The property paths to omit.\n * @returns {Object} Returns the new object.\n * @example\n *\n * var object = { 'a': 1, 'b': '2', 'c': 3 };\n *\n * _.omit(object, ['a', 'c']);\n * // => { 'b': '2' }\n */\n var omit = flatRest(function(object, paths) {\n var result = {};\n if (object == null) {\n return result;\n }\n var isDeep = false;\n paths = arrayMap(paths, function(path) {\n path = castPath(path, object);\n isDeep || (isDeep = path.length > 1);\n return path;\n });\n copyObject(object, getAllKeysIn(object), result);\n if (isDeep) {\n result = baseClone(result, CLONE_DEEP_FLAG | CLONE_FLAT_FLAG | CLONE_SYMBOLS_FLAG, customOmitClone);\n }\n var length = paths.length;\n while (length--) {\n baseUnset(result, paths[length]);\n }\n return result;\n });\n\n /**\n * The opposite of `_.pickBy`; this method creates an object composed of\n * the own and inherited enumerable string keyed properties of `object` that\n * `predicate` doesn't return truthy for. The predicate is invoked with two\n * arguments: (value, key).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The source object.\n * @param {Function} [predicate=_.identity] The function invoked per property.\n * @returns {Object} Returns the new object.\n * @example\n *\n * var object = { 'a': 1, 'b': '2', 'c': 3 };\n *\n * _.omitBy(object, _.isNumber);\n * // => { 'b': '2' }\n */\n function omitBy(object, predicate) {\n return pickBy(object, negate(getIteratee(predicate)));\n }\n\n /**\n * Creates an object composed of the picked `object` properties.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The source object.\n * @param {...(string|string[])} [paths] The property paths to pick.\n * @returns {Object} Returns the new object.\n * @example\n *\n * var object = { 'a': 1, 'b': '2', 'c': 3 };\n *\n * _.pick(object, ['a', 'c']);\n * // => { 'a': 1, 'c': 3 }\n */\n var pick = flatRest(function(object, paths) {\n return object == null ? {} : basePick(object, paths);\n });\n\n /**\n * Creates an object composed of the `object` properties `predicate` returns\n * truthy for. The predicate is invoked with two arguments: (value, key).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The source object.\n * @param {Function} [predicate=_.identity] The function invoked per property.\n * @returns {Object} Returns the new object.\n * @example\n *\n * var object = { 'a': 1, 'b': '2', 'c': 3 };\n *\n * _.pickBy(object, _.isNumber);\n * // => { 'a': 1, 'c': 3 }\n */\n function pickBy(object, predicate) {\n if (object == null) {\n return {};\n }\n var props = arrayMap(getAllKeysIn(object), function(prop) {\n return [prop];\n });\n predicate = getIteratee(predicate);\n return basePickBy(object, props, function(value, path) {\n return predicate(value, path[0]);\n });\n }\n\n /**\n * This method is like `_.get` except that if the resolved value is a\n * function it's invoked with the `this` binding of its parent object and\n * its result is returned.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The object to query.\n * @param {Array|string} path The path of the property to resolve.\n * @param {*} [defaultValue] The value returned for `undefined` resolved values.\n * @returns {*} Returns the resolved value.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c1': 3, 'c2': _.constant(4) } }] };\n *\n * _.result(object, 'a[0].b.c1');\n * // => 3\n *\n * _.result(object, 'a[0].b.c2');\n * // => 4\n *\n * _.result(object, 'a[0].b.c3', 'default');\n * // => 'default'\n *\n * _.result(object, 'a[0].b.c3', _.constant('default'));\n * // => 'default'\n */\n function result(object, path, defaultValue) {\n path = castPath(path, object);\n\n var index = -1,\n length = path.length;\n\n // Ensure the loop is entered when path is empty.\n if (!length) {\n length = 1;\n object = undefined;\n }\n while (++index < length) {\n var value = object == null ? undefined : object[toKey(path[index])];\n if (value === undefined) {\n index = length;\n value = defaultValue;\n }\n object = isFunction(value) ? value.call(object) : value;\n }\n return object;\n }\n\n /**\n * Sets the value at `path` of `object`. If a portion of `path` doesn't exist,\n * it's created. Arrays are created for missing index properties while objects\n * are created for all other missing properties. Use `_.setWith` to customize\n * `path` creation.\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 3.7.0\n * @category Object\n * @param {Object} object The object to modify.\n * @param {Array|string} path The path of the property to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns `object`.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': 3 } }] };\n *\n * _.set(object, 'a[0].b.c', 4);\n * console.log(object.a[0].b.c);\n * // => 4\n *\n * _.set(object, ['x', '0', 'y', 'z'], 5);\n * console.log(object.x[0].y.z);\n * // => 5\n */\n function set(object, path, value) {\n return object == null ? object : baseSet(object, path, value);\n }\n\n /**\n * This method is like `_.set` except that it accepts `customizer` which is\n * invoked to produce the objects of `path`. If `customizer` returns `undefined`\n * path creation is handled by the method instead. The `customizer` is invoked\n * with three arguments: (nsValue, key, nsObject).\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The object to modify.\n * @param {Array|string} path The path of the property to set.\n * @param {*} value The value to set.\n * @param {Function} [customizer] The function to customize assigned values.\n * @returns {Object} Returns `object`.\n * @example\n *\n * var object = {};\n *\n * _.setWith(object, '[0][1]', 'a', Object);\n * // => { '0': { '1': 'a' } }\n */\n function setWith(object, path, value, customizer) {\n customizer = typeof customizer == 'function' ? customizer : undefined;\n return object == null ? object : baseSet(object, path, value, customizer);\n }\n\n /**\n * Creates an array of own enumerable string keyed-value pairs for `object`\n * which can be consumed by `_.fromPairs`. If `object` is a map or set, its\n * entries are returned.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @alias entries\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the key-value pairs.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.toPairs(new Foo);\n * // => [['a', 1], ['b', 2]] (iteration order is not guaranteed)\n */\n var toPairs = createToPairs(keys);\n\n /**\n * Creates an array of own and inherited enumerable string keyed-value pairs\n * for `object` which can be consumed by `_.fromPairs`. If `object` is a map\n * or set, its entries are returned.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @alias entriesIn\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the key-value pairs.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.toPairsIn(new Foo);\n * // => [['a', 1], ['b', 2], ['c', 3]] (iteration order is not guaranteed)\n */\n var toPairsIn = createToPairs(keysIn);\n\n /**\n * An alternative to `_.reduce`; this method transforms `object` to a new\n * `accumulator` object which is the result of running each of its own\n * enumerable string keyed properties thru `iteratee`, with each invocation\n * potentially mutating the `accumulator` object. If `accumulator` is not\n * provided, a new object with the same `[[Prototype]]` will be used. The\n * iteratee is invoked with four arguments: (accumulator, value, key, object).\n * Iteratee functions may exit iteration early by explicitly returning `false`.\n *\n * @static\n * @memberOf _\n * @since 1.3.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @param {*} [accumulator] The custom accumulator value.\n * @returns {*} Returns the accumulated value.\n * @example\n *\n * _.transform([2, 3, 4], function(result, n) {\n * result.push(n *= n);\n * return n % 2 == 0;\n * }, []);\n * // => [4, 9]\n *\n * _.transform({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {\n * (result[value] || (result[value] = [])).push(key);\n * }, {});\n * // => { '1': ['a', 'c'], '2': ['b'] }\n */\n function transform(object, iteratee, accumulator) {\n var isArr = isArray(object),\n isArrLike = isArr || isBuffer(object) || isTypedArray(object);\n\n iteratee = getIteratee(iteratee, 4);\n if (accumulator == null) {\n var Ctor = object && object.constructor;\n if (isArrLike) {\n accumulator = isArr ? new Ctor : [];\n }\n else if (isObject(object)) {\n accumulator = isFunction(Ctor) ? baseCreate(getPrototype(object)) : {};\n }\n else {\n accumulator = {};\n }\n }\n (isArrLike ? arrayEach : baseForOwn)(object, function(value, index, object) {\n return iteratee(accumulator, value, index, object);\n });\n return accumulator;\n }\n\n /**\n * Removes the property at `path` of `object`.\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The object to modify.\n * @param {Array|string} path The path of the property to unset.\n * @returns {boolean} Returns `true` if the property is deleted, else `false`.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': 7 } }] };\n * _.unset(object, 'a[0].b.c');\n * // => true\n *\n * console.log(object);\n * // => { 'a': [{ 'b': {} }] };\n *\n * _.unset(object, ['a', '0', 'b', 'c']);\n * // => true\n *\n * console.log(object);\n * // => { 'a': [{ 'b': {} }] };\n */\n function unset(object, path) {\n return object == null ? true : baseUnset(object, path);\n }\n\n /**\n * This method is like `_.set` except that accepts `updater` to produce the\n * value to set. Use `_.updateWith` to customize `path` creation. The `updater`\n * is invoked with one argument: (value).\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.6.0\n * @category Object\n * @param {Object} object The object to modify.\n * @param {Array|string} path The path of the property to set.\n * @param {Function} updater The function to produce the updated value.\n * @returns {Object} Returns `object`.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': 3 } }] };\n *\n * _.update(object, 'a[0].b.c', function(n) { return n * n; });\n * console.log(object.a[0].b.c);\n * // => 9\n *\n * _.update(object, 'x[0].y.z', function(n) { return n ? n + 1 : 0; });\n * console.log(object.x[0].y.z);\n * // => 0\n */\n function update(object, path, updater) {\n return object == null ? object : baseUpdate(object, path, castFunction(updater));\n }\n\n /**\n * This method is like `_.update` except that it accepts `customizer` which is\n * invoked to produce the objects of `path`. If `customizer` returns `undefined`\n * path creation is handled by the method instead. The `customizer` is invoked\n * with three arguments: (nsValue, key, nsObject).\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.6.0\n * @category Object\n * @param {Object} object The object to modify.\n * @param {Array|string} path The path of the property to set.\n * @param {Function} updater The function to produce the updated value.\n * @param {Function} [customizer] The function to customize assigned values.\n * @returns {Object} Returns `object`.\n * @example\n *\n * var object = {};\n *\n * _.updateWith(object, '[0][1]', _.constant('a'), Object);\n * // => { '0': { '1': 'a' } }\n */\n function updateWith(object, path, updater, customizer) {\n customizer = typeof customizer == 'function' ? customizer : undefined;\n return object == null ? object : baseUpdate(object, path, castFunction(updater), customizer);\n }\n\n /**\n * Creates an array of the own enumerable string keyed property values of `object`.\n *\n * **Note:** Non-object values are coerced to objects.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property values.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.values(new Foo);\n * // => [1, 2] (iteration order is not guaranteed)\n *\n * _.values('hi');\n * // => ['h', 'i']\n */\n function values(object) {\n return object == null ? [] : baseValues(object, keys(object));\n }\n\n /**\n * Creates an array of the own and inherited enumerable string keyed property\n * values of `object`.\n *\n * **Note:** Non-object values are coerced to objects.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property values.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.valuesIn(new Foo);\n * // => [1, 2, 3] (iteration order is not guaranteed)\n */\n function valuesIn(object) {\n return object == null ? [] : baseValues(object, keysIn(object));\n }\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Clamps `number` within the inclusive `lower` and `upper` bounds.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Number\n * @param {number} number The number to clamp.\n * @param {number} [lower] The lower bound.\n * @param {number} upper The upper bound.\n * @returns {number} Returns the clamped number.\n * @example\n *\n * _.clamp(-10, -5, 5);\n * // => -5\n *\n * _.clamp(10, -5, 5);\n * // => 5\n */\n function clamp(number, lower, upper) {\n if (upper === undefined) {\n upper = lower;\n lower = undefined;\n }\n if (upper !== undefined) {\n upper = toNumber(upper);\n upper = upper === upper ? upper : 0;\n }\n if (lower !== undefined) {\n lower = toNumber(lower);\n lower = lower === lower ? lower : 0;\n }\n return baseClamp(toNumber(number), lower, upper);\n }\n\n /**\n * Checks if `n` is between `start` and up to, but not including, `end`. If\n * `end` is not specified, it's set to `start` with `start` then set to `0`.\n * If `start` is greater than `end` the params are swapped to support\n * negative ranges.\n *\n * @static\n * @memberOf _\n * @since 3.3.0\n * @category Number\n * @param {number} number The number to check.\n * @param {number} [start=0] The start of the range.\n * @param {number} end The end of the range.\n * @returns {boolean} Returns `true` if `number` is in the range, else `false`.\n * @see _.range, _.rangeRight\n * @example\n *\n * _.inRange(3, 2, 4);\n * // => true\n *\n * _.inRange(4, 8);\n * // => true\n *\n * _.inRange(4, 2);\n * // => false\n *\n * _.inRange(2, 2);\n * // => false\n *\n * _.inRange(1.2, 2);\n * // => true\n *\n * _.inRange(5.2, 4);\n * // => false\n *\n * _.inRange(-3, -2, -6);\n * // => true\n */\n function inRange(number, start, end) {\n start = toFinite(start);\n if (end === undefined) {\n end = start;\n start = 0;\n } else {\n end = toFinite(end);\n }\n number = toNumber(number);\n return baseInRange(number, start, end);\n }\n\n /**\n * Produces a random number between the inclusive `lower` and `upper` bounds.\n * If only one argument is provided a number between `0` and the given number\n * is returned. If `floating` is `true`, or either `lower` or `upper` are\n * floats, a floating-point number is returned instead of an integer.\n *\n * **Note:** JavaScript follows the IEEE-754 standard for resolving\n * floating-point values which can produce unexpected results.\n *\n * **Note:** If `lower` is greater than `upper`, the values are swapped.\n *\n * @static\n * @memberOf _\n * @since 0.7.0\n * @category Number\n * @param {number} [lower=0] The lower bound.\n * @param {number} [upper=1] The upper bound.\n * @param {boolean} [floating] Specify returning a floating-point number.\n * @returns {number} Returns the random number.\n * @example\n *\n * _.random(0, 5);\n * // => an integer between 0 and 5\n *\n * // when lower is greater than upper the values are swapped\n * _.random(5, 0);\n * // => an integer between 0 and 5\n *\n * _.random(5);\n * // => also an integer between 0 and 5\n *\n * _.random(-5);\n * // => an integer between -5 and 0\n *\n * _.random(5, true);\n * // => a floating-point number between 0 and 5\n *\n * _.random(1.2, 5.2);\n * // => a floating-point number between 1.2 and 5.2\n */\n function random(lower, upper, floating) {\n if (floating && typeof floating != 'boolean' && isIterateeCall(lower, upper, floating)) {\n upper = floating = undefined;\n }\n if (floating === undefined) {\n if (typeof upper == 'boolean') {\n floating = upper;\n upper = undefined;\n }\n else if (typeof lower == 'boolean') {\n floating = lower;\n lower = undefined;\n }\n }\n if (lower === undefined && upper === undefined) {\n lower = 0;\n upper = 1;\n }\n else {\n lower = toFinite(lower);\n if (upper === undefined) {\n upper = lower;\n lower = 0;\n } else {\n upper = toFinite(upper);\n }\n }\n if (lower > upper) {\n var temp = lower;\n lower = upper;\n upper = temp;\n }\n if (floating || lower % 1 || upper % 1) {\n var rand = nativeRandom();\n return nativeMin(lower + (rand * (upper - lower + freeParseFloat('1e-' + ((rand + '').length - 1)))), upper);\n }\n return baseRandom(lower, upper);\n }\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Converts `string` to [camel case](https://en.wikipedia.org/wiki/CamelCase).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to convert.\n * @returns {string} Returns the camel cased string.\n * @example\n *\n * _.camelCase('Foo Bar');\n * // => 'fooBar'\n *\n * _.camelCase('--foo-bar--');\n * // => 'fooBar'\n *\n * _.camelCase('__FOO_BAR__');\n * // => 'fooBar'\n */\n var camelCase = createCompounder(function(result, word, index) {\n word = word.toLowerCase();\n return result + (index ? capitalize(word) : word);\n });\n\n /**\n * Converts the first character of `string` to upper case and the remaining\n * to lower case.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to capitalize.\n * @returns {string} Returns the capitalized string.\n * @example\n *\n * _.capitalize('FRED');\n * // => 'Fred'\n */\n function capitalize(string) {\n return upperFirst(toString(string).toLowerCase());\n }\n\n /**\n * Deburrs `string` by converting\n * [Latin-1 Supplement](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table)\n * and [Latin Extended-A](https://en.wikipedia.org/wiki/Latin_Extended-A)\n * letters to basic Latin letters and removing\n * [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to deburr.\n * @returns {string} Returns the deburred string.\n * @example\n *\n * _.deburr('d\u00E9j\u00E0 vu');\n * // => 'deja vu'\n */\n function deburr(string) {\n string = toString(string);\n return string && string.replace(reLatin, deburrLetter).replace(reComboMark, '');\n }\n\n /**\n * Checks if `string` ends with the given target string.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to inspect.\n * @param {string} [target] The string to search for.\n * @param {number} [position=string.length] The position to search up to.\n * @returns {boolean} Returns `true` if `string` ends with `target`,\n * else `false`.\n * @example\n *\n * _.endsWith('abc', 'c');\n * // => true\n *\n * _.endsWith('abc', 'b');\n * // => false\n *\n * _.endsWith('abc', 'b', 2);\n * // => true\n */\n function endsWith(string, target, position) {\n string = toString(string);\n target = baseToString(target);\n\n var length = string.length;\n position = position === undefined\n ? length\n : baseClamp(toInteger(position), 0, length);\n\n var end = position;\n position -= target.length;\n return position >= 0 && string.slice(position, end) == target;\n }\n\n /**\n * Converts the characters \"&\", \"<\", \">\", '\"', and \"'\" in `string` to their\n * corresponding HTML entities.\n *\n * **Note:** No other characters are escaped. To escape additional\n * characters use a third-party library like [_he_](https://mths.be/he).\n *\n * Though the \">\" character is escaped for symmetry, characters like\n * \">\" and \"/\" don't need escaping in HTML and have no special meaning\n * unless they're part of a tag or unquoted attribute value. See\n * [Mathias Bynens's article](https://mathiasbynens.be/notes/ambiguous-ampersands)\n * (under \"semi-related fun fact\") for more details.\n *\n * When working with HTML you should always\n * [quote attribute values](http://wonko.com/post/html-escaping) to reduce\n * XSS vectors.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category String\n * @param {string} [string=''] The string to escape.\n * @returns {string} Returns the escaped string.\n * @example\n *\n * _.escape('fred, barney, & pebbles');\n * // => 'fred, barney, & pebbles'\n */\n function escape(string) {\n string = toString(string);\n return (string && reHasUnescapedHtml.test(string))\n ? string.replace(reUnescapedHtml, escapeHtmlChar)\n : string;\n }\n\n /**\n * Escapes the `RegExp` special characters \"^\", \"$\", \"\\\", \".\", \"*\", \"+\",\n * \"?\", \"(\", \")\", \"[\", \"]\", \"{\", \"}\", and \"|\" in `string`.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to escape.\n * @returns {string} Returns the escaped string.\n * @example\n *\n * _.escapeRegExp('[lodash](https://lodash.com/)');\n * // => '\\[lodash\\]\\(https://lodash\\.com/\\)'\n */\n function escapeRegExp(string) {\n string = toString(string);\n return (string && reHasRegExpChar.test(string))\n ? string.replace(reRegExpChar, '\\\\$&')\n : string;\n }\n\n /**\n * Converts `string` to\n * [kebab case](https://en.wikipedia.org/wiki/Letter_case#Special_case_styles).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to convert.\n * @returns {string} Returns the kebab cased string.\n * @example\n *\n * _.kebabCase('Foo Bar');\n * // => 'foo-bar'\n *\n * _.kebabCase('fooBar');\n * // => 'foo-bar'\n *\n * _.kebabCase('__FOO_BAR__');\n * // => 'foo-bar'\n */\n var kebabCase = createCompounder(function(result, word, index) {\n return result + (index ? '-' : '') + word.toLowerCase();\n });\n\n /**\n * Converts `string`, as space separated words, to lower case.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category String\n * @param {string} [string=''] The string to convert.\n * @returns {string} Returns the lower cased string.\n * @example\n *\n * _.lowerCase('--Foo-Bar--');\n * // => 'foo bar'\n *\n * _.lowerCase('fooBar');\n * // => 'foo bar'\n *\n * _.lowerCase('__FOO_BAR__');\n * // => 'foo bar'\n */\n var lowerCase = createCompounder(function(result, word, index) {\n return result + (index ? ' ' : '') + word.toLowerCase();\n });\n\n /**\n * Converts the first character of `string` to lower case.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category String\n * @param {string} [string=''] The string to convert.\n * @returns {string} Returns the converted string.\n * @example\n *\n * _.lowerFirst('Fred');\n * // => 'fred'\n *\n * _.lowerFirst('FRED');\n * // => 'fRED'\n */\n var lowerFirst = createCaseFirst('toLowerCase');\n\n /**\n * Pads `string` on the left and right sides if it's shorter than `length`.\n * Padding characters are truncated if they can't be evenly divided by `length`.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to pad.\n * @param {number} [length=0] The padding length.\n * @param {string} [chars=' '] The string used as padding.\n * @returns {string} Returns the padded string.\n * @example\n *\n * _.pad('abc', 8);\n * // => ' abc '\n *\n * _.pad('abc', 8, '_-');\n * // => '_-abc_-_'\n *\n * _.pad('abc', 3);\n * // => 'abc'\n */\n function pad(string, length, chars) {\n string = toString(string);\n length = toInteger(length);\n\n var strLength = length ? stringSize(string) : 0;\n if (!length || strLength >= length) {\n return string;\n }\n var mid = (length - strLength) / 2;\n return (\n createPadding(nativeFloor(mid), chars) +\n string +\n createPadding(nativeCeil(mid), chars)\n );\n }\n\n /**\n * Pads `string` on the right side if it's shorter than `length`. Padding\n * characters are truncated if they exceed `length`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category String\n * @param {string} [string=''] The string to pad.\n * @param {number} [length=0] The padding length.\n * @param {string} [chars=' '] The string used as padding.\n * @returns {string} Returns the padded string.\n * @example\n *\n * _.padEnd('abc', 6);\n * // => 'abc '\n *\n * _.padEnd('abc', 6, '_-');\n * // => 'abc_-_'\n *\n * _.padEnd('abc', 3);\n * // => 'abc'\n */\n function padEnd(string, length, chars) {\n string = toString(string);\n length = toInteger(length);\n\n var strLength = length ? stringSize(string) : 0;\n return (length && strLength < length)\n ? (string + createPadding(length - strLength, chars))\n : string;\n }\n\n /**\n * Pads `string` on the left side if it's shorter than `length`. Padding\n * characters are truncated if they exceed `length`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category String\n * @param {string} [string=''] The string to pad.\n * @param {number} [length=0] The padding length.\n * @param {string} [chars=' '] The string used as padding.\n * @returns {string} Returns the padded string.\n * @example\n *\n * _.padStart('abc', 6);\n * // => ' abc'\n *\n * _.padStart('abc', 6, '_-');\n * // => '_-_abc'\n *\n * _.padStart('abc', 3);\n * // => 'abc'\n */\n function padStart(string, length, chars) {\n string = toString(string);\n length = toInteger(length);\n\n var strLength = length ? stringSize(string) : 0;\n return (length && strLength < length)\n ? (createPadding(length - strLength, chars) + string)\n : string;\n }\n\n /**\n * Converts `string` to an integer of the specified radix. If `radix` is\n * `undefined` or `0`, a `radix` of `10` is used unless `value` is a\n * hexadecimal, in which case a `radix` of `16` is used.\n *\n * **Note:** This method aligns with the\n * [ES5 implementation](https://es5.github.io/#x15.1.2.2) of `parseInt`.\n *\n * @static\n * @memberOf _\n * @since 1.1.0\n * @category String\n * @param {string} string The string to convert.\n * @param {number} [radix=10] The radix to interpret `value` by.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {number} Returns the converted integer.\n * @example\n *\n * _.parseInt('08');\n * // => 8\n *\n * _.map(['6', '08', '10'], _.parseInt);\n * // => [6, 8, 10]\n */\n function parseInt(string, radix, guard) {\n if (guard || radix == null) {\n radix = 0;\n } else if (radix) {\n radix = +radix;\n }\n return nativeParseInt(toString(string).replace(reTrimStart, ''), radix || 0);\n }\n\n /**\n * Repeats the given string `n` times.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to repeat.\n * @param {number} [n=1] The number of times to repeat the string.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {string} Returns the repeated string.\n * @example\n *\n * _.repeat('*', 3);\n * // => '***'\n *\n * _.repeat('abc', 2);\n * // => 'abcabc'\n *\n * _.repeat('abc', 0);\n * // => ''\n */\n function repeat(string, n, guard) {\n if ((guard ? isIterateeCall(string, n, guard) : n === undefined)) {\n n = 1;\n } else {\n n = toInteger(n);\n }\n return baseRepeat(toString(string), n);\n }\n\n /**\n * Replaces matches for `pattern` in `string` with `replacement`.\n *\n * **Note:** This method is based on\n * [`String#replace`](https://mdn.io/String/replace).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category String\n * @param {string} [string=''] The string to modify.\n * @param {RegExp|string} pattern The pattern to replace.\n * @param {Function|string} replacement The match replacement.\n * @returns {string} Returns the modified string.\n * @example\n *\n * _.replace('Hi Fred', 'Fred', 'Barney');\n * // => 'Hi Barney'\n */\n function replace() {\n var args = arguments,\n string = toString(args[0]);\n\n return args.length < 3 ? string : string.replace(args[1], args[2]);\n }\n\n /**\n * Converts `string` to\n * [snake case](https://en.wikipedia.org/wiki/Snake_case).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to convert.\n * @returns {string} Returns the snake cased string.\n * @example\n *\n * _.snakeCase('Foo Bar');\n * // => 'foo_bar'\n *\n * _.snakeCase('fooBar');\n * // => 'foo_bar'\n *\n * _.snakeCase('--FOO-BAR--');\n * // => 'foo_bar'\n */\n var snakeCase = createCompounder(function(result, word, index) {\n return result + (index ? '_' : '') + word.toLowerCase();\n });\n\n /**\n * Splits `string` by `separator`.\n *\n * **Note:** This method is based on\n * [`String#split`](https://mdn.io/String/split).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category String\n * @param {string} [string=''] The string to split.\n * @param {RegExp|string} separator The separator pattern to split by.\n * @param {number} [limit] The length to truncate results to.\n * @returns {Array} Returns the string segments.\n * @example\n *\n * _.split('a-b-c', '-', 2);\n * // => ['a', 'b']\n */\n function split(string, separator, limit) {\n if (limit && typeof limit != 'number' && isIterateeCall(string, separator, limit)) {\n separator = limit = undefined;\n }\n limit = limit === undefined ? MAX_ARRAY_LENGTH : limit >>> 0;\n if (!limit) {\n return [];\n }\n string = toString(string);\n if (string && (\n typeof separator == 'string' ||\n (separator != null && !isRegExp(separator))\n )) {\n separator = baseToString(separator);\n if (!separator && hasUnicode(string)) {\n return castSlice(stringToArray(string), 0, limit);\n }\n }\n return string.split(separator, limit);\n }\n\n /**\n * Converts `string` to\n * [start case](https://en.wikipedia.org/wiki/Letter_case#Stylistic_or_specialised_usage).\n *\n * @static\n * @memberOf _\n * @since 3.1.0\n * @category String\n * @param {string} [string=''] The string to convert.\n * @returns {string} Returns the start cased string.\n * @example\n *\n * _.startCase('--foo-bar--');\n * // => 'Foo Bar'\n *\n * _.startCase('fooBar');\n * // => 'Foo Bar'\n *\n * _.startCase('__FOO_BAR__');\n * // => 'FOO BAR'\n */\n var startCase = createCompounder(function(result, word, index) {\n return result + (index ? ' ' : '') + upperFirst(word);\n });\n\n /**\n * Checks if `string` starts with the given target string.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to inspect.\n * @param {string} [target] The string to search for.\n * @param {number} [position=0] The position to search from.\n * @returns {boolean} Returns `true` if `string` starts with `target`,\n * else `false`.\n * @example\n *\n * _.startsWith('abc', 'a');\n * // => true\n *\n * _.startsWith('abc', 'b');\n * // => false\n *\n * _.startsWith('abc', 'b', 1);\n * // => true\n */\n function startsWith(string, target, position) {\n string = toString(string);\n position = position == null\n ? 0\n : baseClamp(toInteger(position), 0, string.length);\n\n target = baseToString(target);\n return string.slice(position, position + target.length) == target;\n }\n\n /**\n * Creates a compiled template function that can interpolate data properties\n * in \"interpolate\" delimiters, HTML-escape interpolated data properties in\n * \"escape\" delimiters, and execute JavaScript in \"evaluate\" delimiters. Data\n * properties may be accessed as free variables in the template. If a setting\n * object is given, it takes precedence over `_.templateSettings` values.\n *\n * **Security:** `_.template` is insecure and should not be used. It will be\n * removed in Lodash v5. Avoid untrusted input. See\n * [threat model](https://github.com/lodash/lodash/blob/main/threat-model.md).\n *\n * **Note:** In the development build `_.template` utilizes\n * [sourceURLs](http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl)\n * for easier debugging.\n *\n * For more information on precompiling templates see\n * [lodash's custom builds documentation](https://lodash.com/custom-builds).\n *\n * For more information on Chrome extension sandboxes see\n * [Chrome's extensions documentation](https://developer.chrome.com/extensions/sandboxingEval).\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category String\n * @param {string} [string=''] The template string.\n * @param {Object} [options={}] The options object.\n * @param {RegExp} [options.escape=_.templateSettings.escape]\n * The HTML \"escape\" delimiter.\n * @param {RegExp} [options.evaluate=_.templateSettings.evaluate]\n * The \"evaluate\" delimiter.\n * @param {Object} [options.imports=_.templateSettings.imports]\n * An object to import into the template as free variables.\n * @param {RegExp} [options.interpolate=_.templateSettings.interpolate]\n * The \"interpolate\" delimiter.\n * @param {string} [options.sourceURL='lodash.templateSources[n]']\n * The sourceURL of the compiled template.\n * @param {string} [options.variable='obj']\n * The data object variable name.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Function} Returns the compiled template function.\n * @example\n *\n * // Use the \"interpolate\" delimiter to create a compiled template.\n * var compiled = _.template('hello <%= user %>!');\n * compiled({ 'user': 'fred' });\n * // => 'hello fred!'\n *\n * // Use the HTML \"escape\" delimiter to escape data property values.\n * var compiled = _.template('<%- value %>');\n * compiled({ 'value': '