tracky-mouse
Version:
Add facial mouse accessibility to JavaScript applications
1,511 lines (1,228 loc) • 4.23 MB
JavaScript
/**
* @license
* Copyright 2021 Google LLC. All Rights Reserved.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* =============================================================================
*/
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
typeof define === 'function' && define.amd ? define(['exports'], factory) :
(global = global || self, factory(global.tf = global.tf || {}));
}(this, (function (exports) { 'use strict';
var commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};
function unwrapExports (x) {
return x && x.__esModule && Object.prototype.hasOwnProperty.call(x, 'default') ? x['default'] : x;
}
function createCommonjsModule(fn, module) {
return module = { exports: {} }, fn(module, module.exports), module.exports;
}
function getCjsExportFromNamespace (n) {
return n && n['default'] || n;
}
function commonjsRequire () {
throw new Error('Dynamic requires are not currently supported by @rollup/plugin-commonjs');
}
var check = function check(it) {
return it && it.Math == Math && it;
}; // https://github.com/zloirock/core-js/issues/86#issuecomment-115759028
var global_1 = // eslint-disable-next-line no-undef
check(typeof globalThis == 'object' && globalThis) || check(typeof window == 'object' && window) || check(typeof self == 'object' && self) || check(typeof commonjsGlobal == 'object' && commonjsGlobal) || // eslint-disable-next-line no-new-func
Function('return this')();
var fails = function fails(exec) {
try {
return !!exec();
} catch (error) {
return true;
}
};
var descriptors = !fails(function () {
return Object.defineProperty({}, 1, {
get: function get() {
return 7;
}
})[1] != 7;
});
'use strict';
var nativePropertyIsEnumerable = {}.propertyIsEnumerable;
var getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor; // Nashorn ~ JDK8 bug
var NASHORN_BUG = getOwnPropertyDescriptor && !nativePropertyIsEnumerable.call({
1: 2
}, 1); // `Object.prototype.propertyIsEnumerable` method implementation
// https://tc39.github.io/ecma262/#sec-object.prototype.propertyisenumerable
var f = NASHORN_BUG ? function propertyIsEnumerable(V) {
var descriptor = getOwnPropertyDescriptor(this, V);
return !!descriptor && descriptor.enumerable;
} : nativePropertyIsEnumerable;
var objectPropertyIsEnumerable = {
f: f
};
var createPropertyDescriptor = function createPropertyDescriptor(bitmap, value) {
return {
enumerable: !(bitmap & 1),
configurable: !(bitmap & 2),
writable: !(bitmap & 4),
value: value
};
};
var toString = {}.toString;
var classofRaw = function classofRaw(it) {
return toString.call(it).slice(8, -1);
};
var split = ''.split; // fallback for non-array-like ES3 and non-enumerable old V8 strings
var indexedObject = fails(function () {
// throws an error in rhino, see https://github.com/mozilla/rhino/issues/346
// eslint-disable-next-line no-prototype-builtins
return !Object('z').propertyIsEnumerable(0);
}) ? function (it) {
return classofRaw(it) == 'String' ? split.call(it, '') : Object(it);
} : Object;
// `RequireObjectCoercible` abstract operation
// https://tc39.github.io/ecma262/#sec-requireobjectcoercible
var requireObjectCoercible = function requireObjectCoercible(it) {
if (it == undefined) throw TypeError("Can't call method on " + it);
return it;
};
var toIndexedObject = function toIndexedObject(it) {
return indexedObject(requireObjectCoercible(it));
};
var isObject = function isObject(it) {
return typeof it === 'object' ? it !== null : typeof it === 'function';
};
// https://tc39.github.io/ecma262/#sec-toprimitive
// instead of the ES6 spec version, we didn't implement @@toPrimitive case
// and the second argument - flag - preferred type is a string
var toPrimitive = function toPrimitive(input, PREFERRED_STRING) {
if (!isObject(input)) return input;
var fn, val;
if (PREFERRED_STRING && typeof (fn = input.toString) == 'function' && !isObject(val = fn.call(input))) return val;
if (typeof (fn = input.valueOf) == 'function' && !isObject(val = fn.call(input))) return val;
if (!PREFERRED_STRING && typeof (fn = input.toString) == 'function' && !isObject(val = fn.call(input))) return val;
throw TypeError("Can't convert object to primitive value");
};
var hasOwnProperty = {}.hasOwnProperty;
var has = function has(it, key) {
return hasOwnProperty.call(it, key);
};
var document$1 = global_1.document; // typeof document.createElement is 'object' in old IE
var EXISTS = isObject(document$1) && isObject(document$1.createElement);
var documentCreateElement = function documentCreateElement(it) {
return EXISTS ? document$1.createElement(it) : {};
};
var ie8DomDefine = !descriptors && !fails(function () {
return Object.defineProperty(documentCreateElement('div'), 'a', {
get: function get() {
return 7;
}
}).a != 7;
});
var nativeGetOwnPropertyDescriptor = Object.getOwnPropertyDescriptor; // `Object.getOwnPropertyDescriptor` method
// https://tc39.github.io/ecma262/#sec-object.getownpropertydescriptor
var f$1 = descriptors ? nativeGetOwnPropertyDescriptor : function getOwnPropertyDescriptor(O, P) {
O = toIndexedObject(O);
P = toPrimitive(P, true);
if (ie8DomDefine) try {
return nativeGetOwnPropertyDescriptor(O, P);
} catch (error) {
/* empty */
}
if (has(O, P)) return createPropertyDescriptor(!objectPropertyIsEnumerable.f.call(O, P), O[P]);
};
var objectGetOwnPropertyDescriptor = {
f: f$1
};
var anObject = function anObject(it) {
if (!isObject(it)) {
throw TypeError(String(it) + ' is not an object');
}
return it;
};
var nativeDefineProperty = Object.defineProperty; // `Object.defineProperty` method
// https://tc39.github.io/ecma262/#sec-object.defineproperty
var f$2 = descriptors ? nativeDefineProperty : function defineProperty(O, P, Attributes) {
anObject(O);
P = toPrimitive(P, true);
anObject(Attributes);
if (ie8DomDefine) try {
return nativeDefineProperty(O, P, Attributes);
} catch (error) {
/* empty */
}
if ('get' in Attributes || 'set' in Attributes) throw TypeError('Accessors not supported');
if ('value' in Attributes) O[P] = Attributes.value;
return O;
};
var objectDefineProperty = {
f: f$2
};
var createNonEnumerableProperty = descriptors ? function (object, key, value) {
return objectDefineProperty.f(object, key, createPropertyDescriptor(1, value));
} : function (object, key, value) {
object[key] = value;
return object;
};
var setGlobal = function setGlobal(key, value) {
try {
createNonEnumerableProperty(global_1, key, value);
} catch (error) {
global_1[key] = value;
}
return value;
};
var SHARED = '__core-js_shared__';
var store = global_1[SHARED] || setGlobal(SHARED, {});
var sharedStore = store;
var functionToString = Function.toString; // this helper broken in `3.4.1-3.4.4`, so we can't use `shared` helper
if (typeof sharedStore.inspectSource != 'function') {
sharedStore.inspectSource = function (it) {
return functionToString.call(it);
};
}
var inspectSource = sharedStore.inspectSource;
var WeakMap$1 = global_1.WeakMap;
var nativeWeakMap = typeof WeakMap$1 === 'function' && /native code/.test(inspectSource(WeakMap$1));
var isPure = false;
var shared = createCommonjsModule(function (module) {
(module.exports = function (key, value) {
return sharedStore[key] || (sharedStore[key] = value !== undefined ? value : {});
})('versions', []).push({
version: '3.6.5',
mode: isPure ? 'pure' : 'global',
copyright: '© 2020 Denis Pushkarev (zloirock.ru)'
});
});
var id = 0;
var postfix = Math.random();
var uid = function uid(key) {
return 'Symbol(' + String(key === undefined ? '' : key) + ')_' + (++id + postfix).toString(36);
};
var keys = shared('keys');
var sharedKey = function sharedKey(key) {
return keys[key] || (keys[key] = uid(key));
};
var hiddenKeys = {};
var WeakMap$2 = global_1.WeakMap;
var set, get, has$1;
var enforce = function enforce(it) {
return has$1(it) ? get(it) : set(it, {});
};
var getterFor = function getterFor(TYPE) {
return function (it) {
var state;
if (!isObject(it) || (state = get(it)).type !== TYPE) {
throw TypeError('Incompatible receiver, ' + TYPE + ' required');
}
return state;
};
};
if (nativeWeakMap) {
var store$1 = new WeakMap$2();
var wmget = store$1.get;
var wmhas = store$1.has;
var wmset = store$1.set;
set = function set(it, metadata) {
wmset.call(store$1, it, metadata);
return metadata;
};
get = function get(it) {
return wmget.call(store$1, it) || {};
};
has$1 = function has(it) {
return wmhas.call(store$1, it);
};
} else {
var STATE = sharedKey('state');
hiddenKeys[STATE] = true;
set = function set(it, metadata) {
createNonEnumerableProperty(it, STATE, metadata);
return metadata;
};
get = function get(it) {
return has(it, STATE) ? it[STATE] : {};
};
has$1 = function has$1(it) {
return has(it, STATE);
};
}
var internalState = {
set: set,
get: get,
has: has$1,
enforce: enforce,
getterFor: getterFor
};
var internalState_1 = internalState.set;
var internalState_2 = internalState.get;
var internalState_3 = internalState.has;
var internalState_4 = internalState.enforce;
var internalState_5 = internalState.getterFor;
var redefine = createCommonjsModule(function (module) {
var getInternalState = internalState.get;
var enforceInternalState = internalState.enforce;
var TEMPLATE = String(String).split('String');
(module.exports = function (O, key, value, options) {
var unsafe = options ? !!options.unsafe : false;
var simple = options ? !!options.enumerable : false;
var noTargetGet = options ? !!options.noTargetGet : false;
if (typeof value == 'function') {
if (typeof key == 'string' && !has(value, 'name')) createNonEnumerableProperty(value, 'name', key);
enforceInternalState(value).source = TEMPLATE.join(typeof key == 'string' ? key : '');
}
if (O === global_1) {
if (simple) O[key] = value;else setGlobal(key, value);
return;
} else if (!unsafe) {
delete O[key];
} else if (!noTargetGet && O[key]) {
simple = true;
}
if (simple) O[key] = value;else createNonEnumerableProperty(O, key, value); // add fake Function#toString for correct work wrapped methods / constructors with methods like LoDash isNative
})(Function.prototype, 'toString', function toString() {
return typeof this == 'function' && getInternalState(this).source || inspectSource(this);
});
});
var path = global_1;
var aFunction = function aFunction(variable) {
return typeof variable == 'function' ? variable : undefined;
};
var getBuiltIn = function getBuiltIn(namespace, method) {
return arguments.length < 2 ? aFunction(path[namespace]) || aFunction(global_1[namespace]) : path[namespace] && path[namespace][method] || global_1[namespace] && global_1[namespace][method];
};
var ceil = Math.ceil;
var floor = Math.floor; // `ToInteger` abstract operation
// https://tc39.github.io/ecma262/#sec-tointeger
var toInteger = function toInteger(argument) {
return isNaN(argument = +argument) ? 0 : (argument > 0 ? floor : ceil)(argument);
};
var min = Math.min; // `ToLength` abstract operation
// https://tc39.github.io/ecma262/#sec-tolength
var toLength = function toLength(argument) {
return argument > 0 ? min(toInteger(argument), 0x1FFFFFFFFFFFFF) : 0; // 2 ** 53 - 1 == 9007199254740991
};
var max = Math.max;
var min$1 = Math.min; // Helper for a popular repeating case of the spec:
// Let integer be ? ToInteger(index).
// If integer < 0, let result be max((length + integer), 0); else let result be min(integer, length).
var toAbsoluteIndex = function toAbsoluteIndex(index, length) {
var integer = toInteger(index);
return integer < 0 ? max(integer + length, 0) : min$1(integer, length);
};
var createMethod = function createMethod(IS_INCLUDES) {
return function ($this, el, fromIndex) {
var O = toIndexedObject($this);
var length = toLength(O.length);
var index = toAbsoluteIndex(fromIndex, length);
var value; // Array#includes uses SameValueZero equality algorithm
// eslint-disable-next-line no-self-compare
if (IS_INCLUDES && el != el) while (length > index) {
value = O[index++]; // eslint-disable-next-line no-self-compare
if (value != value) return true; // Array#indexOf ignores holes, Array#includes - not
} else for (; length > index; index++) {
if ((IS_INCLUDES || index in O) && O[index] === el) return IS_INCLUDES || index || 0;
}
return !IS_INCLUDES && -1;
};
};
var arrayIncludes = {
// `Array.prototype.includes` method
// https://tc39.github.io/ecma262/#sec-array.prototype.includes
includes: createMethod(true),
// `Array.prototype.indexOf` method
// https://tc39.github.io/ecma262/#sec-array.prototype.indexof
indexOf: createMethod(false)
};
var arrayIncludes_1 = arrayIncludes.includes;
var arrayIncludes_2 = arrayIncludes.indexOf;
var indexOf = arrayIncludes.indexOf;
var objectKeysInternal = function objectKeysInternal(object, names) {
var O = toIndexedObject(object);
var i = 0;
var result = [];
var key;
for (key in O) {
!has(hiddenKeys, key) && has(O, key) && result.push(key);
} // Don't enum bug & hidden keys
while (names.length > i) {
if (has(O, key = names[i++])) {
~indexOf(result, key) || result.push(key);
}
}
return result;
};
// IE8- don't enum bug keys
var enumBugKeys = ['constructor', 'hasOwnProperty', 'isPrototypeOf', 'propertyIsEnumerable', 'toLocaleString', 'toString', 'valueOf'];
var hiddenKeys$1 = enumBugKeys.concat('length', 'prototype'); // `Object.getOwnPropertyNames` method
// https://tc39.github.io/ecma262/#sec-object.getownpropertynames
var f$3 = Object.getOwnPropertyNames || function getOwnPropertyNames(O) {
return objectKeysInternal(O, hiddenKeys$1);
};
var objectGetOwnPropertyNames = {
f: f$3
};
var f$4 = Object.getOwnPropertySymbols;
var objectGetOwnPropertySymbols = {
f: f$4
};
var ownKeys = getBuiltIn('Reflect', 'ownKeys') || function ownKeys(it) {
var keys = objectGetOwnPropertyNames.f(anObject(it));
var getOwnPropertySymbols = objectGetOwnPropertySymbols.f;
return getOwnPropertySymbols ? keys.concat(getOwnPropertySymbols(it)) : keys;
};
var copyConstructorProperties = function copyConstructorProperties(target, source) {
var keys = ownKeys(source);
var defineProperty = objectDefineProperty.f;
var getOwnPropertyDescriptor = objectGetOwnPropertyDescriptor.f;
for (var i = 0; i < keys.length; i++) {
var key = keys[i];
if (!has(target, key)) defineProperty(target, key, getOwnPropertyDescriptor(source, key));
}
};
var replacement = /#|\.prototype\./;
var isForced = function isForced(feature, detection) {
var value = data[normalize(feature)];
return value == POLYFILL ? true : value == NATIVE ? false : typeof detection == 'function' ? fails(detection) : !!detection;
};
var normalize = isForced.normalize = function (string) {
return String(string).replace(replacement, '.').toLowerCase();
};
var data = isForced.data = {};
var NATIVE = isForced.NATIVE = 'N';
var POLYFILL = isForced.POLYFILL = 'P';
var isForced_1 = isForced;
var getOwnPropertyDescriptor$1 = objectGetOwnPropertyDescriptor.f;
/*
options.target - name of the target object
options.global - target is the global object
options.stat - export as static methods of target
options.proto - export as prototype methods of target
options.real - real prototype method for the `pure` version
options.forced - export even if the native feature is available
options.bind - bind methods to the target, required for the `pure` version
options.wrap - wrap constructors to preventing global pollution, required for the `pure` version
options.unsafe - use the simple assignment of property instead of delete + defineProperty
options.sham - add a flag to not completely full polyfills
options.enumerable - export as enumerable property
options.noTargetGet - prevent calling a getter on target
*/
var _export = function _export(options, source) {
var TARGET = options.target;
var GLOBAL = options.global;
var STATIC = options.stat;
var FORCED, target, key, targetProperty, sourceProperty, descriptor;
if (GLOBAL) {
target = global_1;
} else if (STATIC) {
target = global_1[TARGET] || setGlobal(TARGET, {});
} else {
target = (global_1[TARGET] || {}).prototype;
}
if (target) for (key in source) {
sourceProperty = source[key];
if (options.noTargetGet) {
descriptor = getOwnPropertyDescriptor$1(target, key);
targetProperty = descriptor && descriptor.value;
} else targetProperty = target[key];
FORCED = isForced_1(GLOBAL ? key : TARGET + (STATIC ? '.' : '#') + key, options.forced); // contained in target
if (!FORCED && targetProperty !== undefined) {
if (typeof sourceProperty === typeof targetProperty) continue;
copyConstructorProperties(sourceProperty, targetProperty);
} // add a flag to not completely full polyfills
if (options.sham || targetProperty && targetProperty.sham) {
createNonEnumerableProperty(sourceProperty, 'sham', true);
} // extend global
redefine(target, key, sourceProperty, options);
}
};
var nativeSymbol = !!Object.getOwnPropertySymbols && !fails(function () {
// Chrome 38 Symbol has incorrect toString conversion
// eslint-disable-next-line no-undef
return !String(Symbol());
});
var useSymbolAsUid = nativeSymbol // eslint-disable-next-line no-undef
&& !Symbol.sham // eslint-disable-next-line no-undef
&& typeof Symbol.iterator == 'symbol';
// https://tc39.github.io/ecma262/#sec-isarray
var isArray = Array.isArray || function isArray(arg) {
return classofRaw(arg) == 'Array';
};
// https://tc39.github.io/ecma262/#sec-toobject
var toObject = function toObject(argument) {
return Object(requireObjectCoercible(argument));
};
// https://tc39.github.io/ecma262/#sec-object.keys
var objectKeys = Object.keys || function keys(O) {
return objectKeysInternal(O, enumBugKeys);
};
// https://tc39.github.io/ecma262/#sec-object.defineproperties
var objectDefineProperties = descriptors ? Object.defineProperties : function defineProperties(O, Properties) {
anObject(O);
var keys = objectKeys(Properties);
var length = keys.length;
var index = 0;
var key;
while (length > index) {
objectDefineProperty.f(O, key = keys[index++], Properties[key]);
}
return O;
};
var html = getBuiltIn('document', 'documentElement');
var GT = '>';
var LT = '<';
var PROTOTYPE = 'prototype';
var SCRIPT = 'script';
var IE_PROTO = sharedKey('IE_PROTO');
var EmptyConstructor = function EmptyConstructor() {
/* empty */
};
var scriptTag = function scriptTag(content) {
return LT + SCRIPT + GT + content + LT + '/' + SCRIPT + GT;
}; // Create object with fake `null` prototype: use ActiveX Object with cleared prototype
var NullProtoObjectViaActiveX = function NullProtoObjectViaActiveX(activeXDocument) {
activeXDocument.write(scriptTag(''));
activeXDocument.close();
var temp = activeXDocument.parentWindow.Object;
activeXDocument = null; // avoid memory leak
return temp;
}; // Create object with fake `null` prototype: use iframe Object with cleared prototype
var NullProtoObjectViaIFrame = function NullProtoObjectViaIFrame() {
// Thrash, waste and sodomy: IE GC bug
var iframe = documentCreateElement('iframe');
var JS = 'java' + SCRIPT + ':';
var iframeDocument;
iframe.style.display = 'none';
html.appendChild(iframe); // https://github.com/zloirock/core-js/issues/475
iframe.src = String(JS);
iframeDocument = iframe.contentWindow.document;
iframeDocument.open();
iframeDocument.write(scriptTag('document.F=Object'));
iframeDocument.close();
return iframeDocument.F;
}; // Check for document.domain and active x support
// No need to use active x approach when document.domain is not set
// see https://github.com/es-shims/es5-shim/issues/150
// variation of https://github.com/kitcambridge/es5-shim/commit/4f738ac066346
// avoid IE GC bug
var activeXDocument;
var _NullProtoObject = function NullProtoObject() {
try {
/* global ActiveXObject */
activeXDocument = document.domain && new ActiveXObject('htmlfile');
} catch (error) {
/* ignore */
}
_NullProtoObject = activeXDocument ? NullProtoObjectViaActiveX(activeXDocument) : NullProtoObjectViaIFrame();
var length = enumBugKeys.length;
while (length--) {
delete _NullProtoObject[PROTOTYPE][enumBugKeys[length]];
}
return _NullProtoObject();
};
hiddenKeys[IE_PROTO] = true; // `Object.create` method
// https://tc39.github.io/ecma262/#sec-object.create
var objectCreate = Object.create || function create(O, Properties) {
var result;
if (O !== null) {
EmptyConstructor[PROTOTYPE] = anObject(O);
result = new EmptyConstructor();
EmptyConstructor[PROTOTYPE] = null; // add "__proto__" for Object.getPrototypeOf polyfill
result[IE_PROTO] = O;
} else result = _NullProtoObject();
return Properties === undefined ? result : objectDefineProperties(result, Properties);
};
var nativeGetOwnPropertyNames = objectGetOwnPropertyNames.f;
var toString$1 = {}.toString;
var windowNames = typeof window == 'object' && window && Object.getOwnPropertyNames ? Object.getOwnPropertyNames(window) : [];
var getWindowNames = function getWindowNames(it) {
try {
return nativeGetOwnPropertyNames(it);
} catch (error) {
return windowNames.slice();
}
}; // fallback for IE11 buggy Object.getOwnPropertyNames with iframe and window
var f$5 = function getOwnPropertyNames(it) {
return windowNames && toString$1.call(it) == '[object Window]' ? getWindowNames(it) : nativeGetOwnPropertyNames(toIndexedObject(it));
};
var objectGetOwnPropertyNamesExternal = {
f: f$5
};
var WellKnownSymbolsStore = shared('wks');
var Symbol$1 = global_1.Symbol;
var createWellKnownSymbol = useSymbolAsUid ? Symbol$1 : Symbol$1 && Symbol$1.withoutSetter || uid;
var wellKnownSymbol = function wellKnownSymbol(name) {
if (!has(WellKnownSymbolsStore, name)) {
if (nativeSymbol && has(Symbol$1, name)) WellKnownSymbolsStore[name] = Symbol$1[name];else WellKnownSymbolsStore[name] = createWellKnownSymbol('Symbol.' + name);
}
return WellKnownSymbolsStore[name];
};
var f$6 = wellKnownSymbol;
var wellKnownSymbolWrapped = {
f: f$6
};
var defineProperty = objectDefineProperty.f;
var defineWellKnownSymbol = function defineWellKnownSymbol(NAME) {
var Symbol = path.Symbol || (path.Symbol = {});
if (!has(Symbol, NAME)) defineProperty(Symbol, NAME, {
value: wellKnownSymbolWrapped.f(NAME)
});
};
var defineProperty$1 = objectDefineProperty.f;
var TO_STRING_TAG = wellKnownSymbol('toStringTag');
var setToStringTag = function setToStringTag(it, TAG, STATIC) {
if (it && !has(it = STATIC ? it : it.prototype, TO_STRING_TAG)) {
defineProperty$1(it, TO_STRING_TAG, {
configurable: true,
value: TAG
});
}
};
var aFunction$1 = function aFunction(it) {
if (typeof it != 'function') {
throw TypeError(String(it) + ' is not a function');
}
return it;
};
var functionBindContext = function functionBindContext(fn, that, length) {
aFunction$1(fn);
if (that === undefined) return fn;
switch (length) {
case 0:
return function () {
return fn.call(that);
};
case 1:
return function (a) {
return fn.call(that, a);
};
case 2:
return function (a, b) {
return fn.call(that, a, b);
};
case 3:
return function (a, b, c) {
return fn.call(that, a, b, c);
};
}
return function ()
/* ...args */
{
return fn.apply(that, arguments);
};
};
var SPECIES = wellKnownSymbol('species'); // `ArraySpeciesCreate` abstract operation
// https://tc39.github.io/ecma262/#sec-arrayspeciescreate
var arraySpeciesCreate = function arraySpeciesCreate(originalArray, length) {
var C;
if (isArray(originalArray)) {
C = originalArray.constructor; // cross-realm fallback
if (typeof C == 'function' && (C === Array || isArray(C.prototype))) C = undefined;else if (isObject(C)) {
C = C[SPECIES];
if (C === null) C = undefined;
}
}
return new (C === undefined ? Array : C)(length === 0 ? 0 : length);
};
var push = [].push; // `Array.prototype.{ forEach, map, filter, some, every, find, findIndex }` methods implementation
var createMethod$1 = function createMethod(TYPE) {
var IS_MAP = TYPE == 1;
var IS_FILTER = TYPE == 2;
var IS_SOME = TYPE == 3;
var IS_EVERY = TYPE == 4;
var IS_FIND_INDEX = TYPE == 6;
var NO_HOLES = TYPE == 5 || IS_FIND_INDEX;
return function ($this, callbackfn, that, specificCreate) {
var O = toObject($this);
var self = indexedObject(O);
var boundFunction = functionBindContext(callbackfn, that, 3);
var length = toLength(self.length);
var index = 0;
var create = specificCreate || arraySpeciesCreate;
var target = IS_MAP ? create($this, length) : IS_FILTER ? create($this, 0) : undefined;
var value, result;
for (; length > index; index++) {
if (NO_HOLES || index in self) {
value = self[index];
result = boundFunction(value, index, O);
if (TYPE) {
if (IS_MAP) target[index] = result; // map
else if (result) switch (TYPE) {
case 3:
return true;
// some
case 5:
return value;
// find
case 6:
return index;
// findIndex
case 2:
push.call(target, value);
// filter
} else if (IS_EVERY) return false; // every
}
}
}
return IS_FIND_INDEX ? -1 : IS_SOME || IS_EVERY ? IS_EVERY : target;
};
};
var arrayIteration = {
// `Array.prototype.forEach` method
// https://tc39.github.io/ecma262/#sec-array.prototype.foreach
forEach: createMethod$1(0),
// `Array.prototype.map` method
// https://tc39.github.io/ecma262/#sec-array.prototype.map
map: createMethod$1(1),
// `Array.prototype.filter` method
// https://tc39.github.io/ecma262/#sec-array.prototype.filter
filter: createMethod$1(2),
// `Array.prototype.some` method
// https://tc39.github.io/ecma262/#sec-array.prototype.some
some: createMethod$1(3),
// `Array.prototype.every` method
// https://tc39.github.io/ecma262/#sec-array.prototype.every
every: createMethod$1(4),
// `Array.prototype.find` method
// https://tc39.github.io/ecma262/#sec-array.prototype.find
find: createMethod$1(5),
// `Array.prototype.findIndex` method
// https://tc39.github.io/ecma262/#sec-array.prototype.findIndex
findIndex: createMethod$1(6)
};
var arrayIteration_1 = arrayIteration.forEach;
var arrayIteration_2 = arrayIteration.map;
var arrayIteration_3 = arrayIteration.filter;
var arrayIteration_4 = arrayIteration.some;
var arrayIteration_5 = arrayIteration.every;
var arrayIteration_6 = arrayIteration.find;
var arrayIteration_7 = arrayIteration.findIndex;
'use strict';
var $forEach = arrayIteration.forEach;
var HIDDEN = sharedKey('hidden');
var SYMBOL = 'Symbol';
var PROTOTYPE$1 = 'prototype';
var TO_PRIMITIVE = wellKnownSymbol('toPrimitive');
var setInternalState = internalState.set;
var getInternalState = internalState.getterFor(SYMBOL);
var ObjectPrototype = Object[PROTOTYPE$1];
var $Symbol = global_1.Symbol;
var $stringify = getBuiltIn('JSON', 'stringify');
var nativeGetOwnPropertyDescriptor$1 = objectGetOwnPropertyDescriptor.f;
var nativeDefineProperty$1 = objectDefineProperty.f;
var nativeGetOwnPropertyNames$1 = objectGetOwnPropertyNamesExternal.f;
var nativePropertyIsEnumerable$1 = objectPropertyIsEnumerable.f;
var AllSymbols = shared('symbols');
var ObjectPrototypeSymbols = shared('op-symbols');
var StringToSymbolRegistry = shared('string-to-symbol-registry');
var SymbolToStringRegistry = shared('symbol-to-string-registry');
var WellKnownSymbolsStore$1 = shared('wks');
var QObject = global_1.QObject; // Don't use setters in Qt Script, https://github.com/zloirock/core-js/issues/173
var USE_SETTER = !QObject || !QObject[PROTOTYPE$1] || !QObject[PROTOTYPE$1].findChild; // fallback for old Android, https://code.google.com/p/v8/issues/detail?id=687
var setSymbolDescriptor = descriptors && fails(function () {
return objectCreate(nativeDefineProperty$1({}, 'a', {
get: function get() {
return nativeDefineProperty$1(this, 'a', {
value: 7
}).a;
}
})).a != 7;
}) ? function (O, P, Attributes) {
var ObjectPrototypeDescriptor = nativeGetOwnPropertyDescriptor$1(ObjectPrototype, P);
if (ObjectPrototypeDescriptor) delete ObjectPrototype[P];
nativeDefineProperty$1(O, P, Attributes);
if (ObjectPrototypeDescriptor && O !== ObjectPrototype) {
nativeDefineProperty$1(ObjectPrototype, P, ObjectPrototypeDescriptor);
}
} : nativeDefineProperty$1;
var wrap = function wrap(tag, description) {
var symbol = AllSymbols[tag] = objectCreate($Symbol[PROTOTYPE$1]);
setInternalState(symbol, {
type: SYMBOL,
tag: tag,
description: description
});
if (!descriptors) symbol.description = description;
return symbol;
};
var isSymbol = useSymbolAsUid ? function (it) {
return typeof it == 'symbol';
} : function (it) {
return Object(it) instanceof $Symbol;
};
var $defineProperty = function defineProperty(O, P, Attributes) {
if (O === ObjectPrototype) $defineProperty(ObjectPrototypeSymbols, P, Attributes);
anObject(O);
var key = toPrimitive(P, true);
anObject(Attributes);
if (has(AllSymbols, key)) {
if (!Attributes.enumerable) {
if (!has(O, HIDDEN)) nativeDefineProperty$1(O, HIDDEN, createPropertyDescriptor(1, {}));
O[HIDDEN][key] = true;
} else {
if (has(O, HIDDEN) && O[HIDDEN][key]) O[HIDDEN][key] = false;
Attributes = objectCreate(Attributes, {
enumerable: createPropertyDescriptor(0, false)
});
}
return setSymbolDescriptor(O, key, Attributes);
}
return nativeDefineProperty$1(O, key, Attributes);
};
var $defineProperties = function defineProperties(O, Properties) {
anObject(O);
var properties = toIndexedObject(Properties);
var keys = objectKeys(properties).concat($getOwnPropertySymbols(properties));
$forEach(keys, function (key) {
if (!descriptors || $propertyIsEnumerable.call(properties, key)) $defineProperty(O, key, properties[key]);
});
return O;
};
var $create = function create(O, Properties) {
return Properties === undefined ? objectCreate(O) : $defineProperties(objectCreate(O), Properties);
};
var $propertyIsEnumerable = function propertyIsEnumerable(V) {
var P = toPrimitive(V, true);
var enumerable = nativePropertyIsEnumerable$1.call(this, P);
if (this === ObjectPrototype && has(AllSymbols, P) && !has(ObjectPrototypeSymbols, P)) return false;
return enumerable || !has(this, P) || !has(AllSymbols, P) || has(this, HIDDEN) && this[HIDDEN][P] ? enumerable : true;
};
var $getOwnPropertyDescriptor = function getOwnPropertyDescriptor(O, P) {
var it = toIndexedObject(O);
var key = toPrimitive(P, true);
if (it === ObjectPrototype && has(AllSymbols, key) && !has(ObjectPrototypeSymbols, key)) return;
var descriptor = nativeGetOwnPropertyDescriptor$1(it, key);
if (descriptor && has(AllSymbols, key) && !(has(it, HIDDEN) && it[HIDDEN][key])) {
descriptor.enumerable = true;
}
return descriptor;
};
var $getOwnPropertyNames = function getOwnPropertyNames(O) {
var names = nativeGetOwnPropertyNames$1(toIndexedObject(O));
var result = [];
$forEach(names, function (key) {
if (!has(AllSymbols, key) && !has(hiddenKeys, key)) result.push(key);
});
return result;
};
var $getOwnPropertySymbols = function getOwnPropertySymbols(O) {
var IS_OBJECT_PROTOTYPE = O === ObjectPrototype;
var names = nativeGetOwnPropertyNames$1(IS_OBJECT_PROTOTYPE ? ObjectPrototypeSymbols : toIndexedObject(O));
var result = [];
$forEach(names, function (key) {
if (has(AllSymbols, key) && (!IS_OBJECT_PROTOTYPE || has(ObjectPrototype, key))) {
result.push(AllSymbols[key]);
}
});
return result;
}; // `Symbol` constructor
// https://tc39.github.io/ecma262/#sec-symbol-constructor
if (!nativeSymbol) {
$Symbol = function Symbol() {
if (this instanceof $Symbol) throw TypeError('Symbol is not a constructor');
var description = !arguments.length || arguments[0] === undefined ? undefined : String(arguments[0]);
var tag = uid(description);
var setter = function setter(value) {
if (this === ObjectPrototype) setter.call(ObjectPrototypeSymbols, value);
if (has(this, HIDDEN) && has(this[HIDDEN], tag)) this[HIDDEN][tag] = false;
setSymbolDescriptor(this, tag, createPropertyDescriptor(1, value));
};
if (descriptors && USE_SETTER) setSymbolDescriptor(ObjectPrototype, tag, {
configurable: true,
set: setter
});
return wrap(tag, description);
};
redefine($Symbol[PROTOTYPE$1], 'toString', function toString() {
return getInternalState(this).tag;
});
redefine($Symbol, 'withoutSetter', function (description) {
return wrap(uid(description), description);
});
objectPropertyIsEnumerable.f = $propertyIsEnumerable;
objectDefineProperty.f = $defineProperty;
objectGetOwnPropertyDescriptor.f = $getOwnPropertyDescriptor;
objectGetOwnPropertyNames.f = objectGetOwnPropertyNamesExternal.f = $getOwnPropertyNames;
objectGetOwnPropertySymbols.f = $getOwnPropertySymbols;
wellKnownSymbolWrapped.f = function (name) {
return wrap(wellKnownSymbol(name), name);
};
if (descriptors) {
// https://github.com/tc39/proposal-Symbol-description
nativeDefineProperty$1($Symbol[PROTOTYPE$1], 'description', {
configurable: true,
get: function description() {
return getInternalState(this).description;
}
});
if (!isPure) {
redefine(ObjectPrototype, 'propertyIsEnumerable', $propertyIsEnumerable, {
unsafe: true
});
}
}
}
_export({
global: true,
wrap: true,
forced: !nativeSymbol,
sham: !nativeSymbol
}, {
Symbol: $Symbol
});
$forEach(objectKeys(WellKnownSymbolsStore$1), function (name) {
defineWellKnownSymbol(name);
});
_export({
target: SYMBOL,
stat: true,
forced: !nativeSymbol
}, {
// `Symbol.for` method
// https://tc39.github.io/ecma262/#sec-symbol.for
'for': function _for(key) {
var string = String(key);
if (has(StringToSymbolRegistry, string)) return StringToSymbolRegistry[string];
var symbol = $Symbol(string);
StringToSymbolRegistry[string] = symbol;
SymbolToStringRegistry[symbol] = string;
return symbol;
},
// `Symbol.keyFor` method
// https://tc39.github.io/ecma262/#sec-symbol.keyfor
keyFor: function keyFor(sym) {
if (!isSymbol(sym)) throw TypeError(sym + ' is not a symbol');
if (has(SymbolToStringRegistry, sym)) return SymbolToStringRegistry[sym];
},
useSetter: function useSetter() {
USE_SETTER = true;
},
useSimple: function useSimple() {
USE_SETTER = false;
}
});
_export({
target: 'Object',
stat: true,
forced: !nativeSymbol,
sham: !descriptors
}, {
// `Object.create` method
// https://tc39.github.io/ecma262/#sec-object.create
create: $create,
// `Object.defineProperty` method
// https://tc39.github.io/ecma262/#sec-object.defineproperty
defineProperty: $defineProperty,
// `Object.defineProperties` method
// https://tc39.github.io/ecma262/#sec-object.defineproperties
defineProperties: $defineProperties,
// `Object.getOwnPropertyDescriptor` method
// https://tc39.github.io/ecma262/#sec-object.getownpropertydescriptors
getOwnPropertyDescriptor: $getOwnPropertyDescriptor
});
_export({
target: 'Object',
stat: true,
forced: !nativeSymbol
}, {
// `Object.getOwnPropertyNames` method
// https://tc39.github.io/ecma262/#sec-object.getownpropertynames
getOwnPropertyNames: $getOwnPropertyNames,
// `Object.getOwnPropertySymbols` method
// https://tc39.github.io/ecma262/#sec-object.getownpropertysymbols
getOwnPropertySymbols: $getOwnPropertySymbols
}); // Chrome 38 and 39 `Object.getOwnPropertySymbols` fails on primitives
// https://bugs.chromium.org/p/v8/issues/detail?id=3443
_export({
target: 'Object',
stat: true,
forced: fails(function () {
objectGetOwnPropertySymbols.f(1);
})
}, {
getOwnPropertySymbols: function getOwnPropertySymbols(it) {
return objectGetOwnPropertySymbols.f(toObject(it));
}
}); // `JSON.stringify` method behavior with symbols
// https://tc39.github.io/ecma262/#sec-json.stringify
if ($stringify) {
var FORCED_JSON_STRINGIFY = !nativeSymbol || fails(function () {
var symbol = $Symbol(); // MS Edge converts symbol values to JSON as {}
return $stringify([symbol]) != '[null]' // WebKit converts symbol values to JSON as null
|| $stringify({
a: symbol
}) != '{}' // V8 throws on boxed symbols
|| $stringify(Object(symbol)) != '{}';
});
_export({
target: 'JSON',
stat: true,
forced: FORCED_JSON_STRINGIFY
}, {
// eslint-disable-next-line no-unused-vars
stringify: function stringify(it, replacer, space) {
var args = [it];
var index = 1;
var $replacer;
while (arguments.length > index) {
args.push(arguments[index++]);
}
$replacer = replacer;
if (!isObject(replacer) && it === undefined || isSymbol(it)) return; // IE8 returns string on undefined
if (!isArray(replacer)) replacer = function replacer(key, value) {
if (typeof $replacer == 'function') value = $replacer.call(this, key, value);
if (!isSymbol(value)) return value;
};
args[1] = replacer;
return $stringify.apply(null, args);
}
});
} // `Symbol.prototype[@@toPrimitive]` method
// https://tc39.github.io/ecma262/#sec-symbol.prototype-@@toprimitive
if (!$Symbol[PROTOTYPE$1][TO_PRIMITIVE]) {
createNonEnumerableProperty($Symbol[PROTOTYPE$1], TO_PRIMITIVE, $Symbol[PROTOTYPE$1].valueOf);
} // `Symbol.prototype[@@toStringTag]` property
// https://tc39.github.io/ecma262/#sec-symbol.prototype-@@tostringtag
setToStringTag($Symbol, SYMBOL);
hiddenKeys[HIDDEN] = true;
var es_symbol = {};
// https://tc39.github.io/ecma262/#sec-symbol.asynciterator
defineWellKnownSymbol('asyncIterator');
var es_symbol_asyncIterator = {};
// https://tc39.github.io/ecma262/#sec-symbol.prototype.description
'use strict';
var defineProperty$2 = objectDefineProperty.f;
var NativeSymbol = global_1.Symbol;
if (descriptors && typeof NativeSymbol == 'function' && (!('description' in NativeSymbol.prototype) || // Safari 12 bug
NativeSymbol().description !== undefined)) {
var EmptyStringDescriptionStore = {}; // wrap Symbol constructor for correct work with undefined description
var SymbolWrapper = function Symbol() {
var description = arguments.length < 1 || arguments[0] === undefined ? undefined : String(arguments[0]);
var result = this instanceof SymbolWrapper ? new NativeSymbol(description) // in Edge 13, String(Symbol(undefined)) === 'Symbol(undefined)'
: description === undefined ? NativeSymbol() : NativeSymbol(description);
if (description === '') EmptyStringDescriptionStore[result] = true;
return result;
};
copyConstructorProperties(SymbolWrapper, NativeSymbol);
var symbolPrototype = SymbolWrapper.prototype = NativeSymbol.prototype;
symbolPrototype.constructor = SymbolWrapper;
var symbolToString = symbolPrototype.toString;
var native = String(NativeSymbol('test')) == 'Symbol(test)';
var regexp = /^Symbol\((.*)\)[^)]+$/;
defineProperty$2(symbolPrototype, 'description', {
configurable: true,
get: function description() {
var symbol = isObject(this) ? this.valueOf() : this;
var string = symbolToString.call(symbol);
if (has(EmptyStringDescriptionStore, symbol)) return '';
var desc = native ? string.slice(7, -1) : string.replace(regexp, '$1');
return desc === '' ? undefined : desc;
}
});
_export({
global: true,
forced: true
}, {
Symbol: SymbolWrapper
});
}
var es_symbol_description = {};
// https://tc39.github.io/ecma262/#sec-symbol.hasinstance
defineWellKnownSymbol('hasInstance');
var es_symbol_hasInstance = {};
// https://tc39.github.io/ecma262/#sec-symbol.isconcatspreadable
defineWellKnownSymbol('isConcatSpreadable');
var es_symbol_isConcatSpreadable = {};
// https://tc39.github.io/ecma262/#sec-symbol.iterator
defineWellKnownSymbol('iterator');
var es_symbol_iterator = {};
// https://tc39.github.io/ecma262/#sec-symbol.match
defineWellKnownSymbol('match');
var es_symbol_match = {};
defineWellKnownSymbol('matchAll');
var es_symbol_matchAll = {};
// https://tc39.github.io/ecma262/#sec-symbol.replace
defineWellKnownSymbol('replace');
var es_symbol_replace = {};
// https://tc39.github.io/ecma262/#sec-symbol.search
defineWellKnownSymbol('search');
var es_symbol_search = {};
// https://tc39.github.io/ecma262/#sec-symbol.species
defineWellKnownSymbol('species');
var es_symbol_species = {};
// https://tc39.github.io/ecma262/#sec-symbol.split
defineWellKnownSymbol('split');
var es_symbol_split = {};
// https://tc39.github.io/ecma262/#sec-symbol.toprimitive
defineWellKnownSymbol('toPrimitive');
var es_symbol_toPrimitive = {};
// https://tc39.github.io/ecma262/#sec-symbol.tostringtag
defineWellKnownSymbol('toStringTag');
var es_symbol_toStringTag = {};
// https://tc39.github.io/ecma262/#sec-symbol.unscopables
defineWellKnownSymbol('unscopables');
var es_symbol_unscopables = {};
'use strict';
var nativeAssign = Object.assign;
var defineProperty$3 = Object.defineProperty; // `Object.assign` method
// https://tc39.github.io/ecma262/#sec-object.assign
var objectAssign = !nativeAssign || fails(function () {
// should have correct order of operations (Edge bug)
if (descriptors && nativeAssign({
b: 1
}, nativeAssign(defineProperty$3({}, 'a', {
enumerable: true,
get: function get() {
defineProperty$3(this, 'b', {
value: 3,
enumerable: false
});
}
}), {
b: 2
})).b !== 1) return true; // should work with symbols and should have deterministic property order (V8 bug)
var A = {};
var B = {}; // eslint-disable-next-line no-undef
var symbol = Symbol();
var alphabet = 'abcdefghijklmnopqrst';
A[symbol] = 7;
alphabet.split('').forEach(function (chr) {
B[chr] = chr;
});
return nativeAssign({}, A)[symbol] != 7 || objectKeys(nativeAssign({}, B)).join('') != alphabet;
}) ? function assign(target, source) {
// eslint-disable-line no-unused-vars
var T = toObject(target);
var argumentsLength = arguments.length;
var index = 1;
var getOwnPropertySymbols = objectGetOwnPropertySymbols.f;
var propertyIsEnumerable = objectPropertyIsEnumerable.f;
while (argumentsLength > index) {
var S = indexedObject(arguments[index++]);
var keys = getOwnPropertySymbols ? objectKeys(S).concat(getOwnPropertySymbols(S)) : objectKeys(S);
var length = keys.length;
var j = 0;
var key;
while (length > j) {
key = keys[j++];
if (!descriptors || propertyIsEnumerable.call(S, key)) T[key] = S[key];
}
}
return T;
} : nativeAssign;
// https://tc39.github.io/ecma262/#sec-object.assign
_export({
target: 'Object',
stat: true,
forced: Object.assign !== objectAssign
}, {
assign: objectAssign
});
var es_object_assign = {};
// https://tc39.github.io/ecma262/#sec-object.create
_export({
target: 'Object',
stat: true,
sham: !descriptors
}, {
create: objectCreate
});
var es_object_create = {};
// https://tc39.github.io/ecma262/#sec-object.defineproperty
_export({
target: 'Object',
stat: true,
forced: !descriptors,
sham: !descriptors
}, {
defineProperty: objectDefineProperty.f
});
var es_object_defineProperty = {};
// https://tc39.github.io/ecma262/#sec-object.defineproperties
_export({
target: 'Object',
stat: true,
forced: !descriptors,
sham: !descriptors
}, {
defineProperties: objectDefineProperties
});
var es_object_defineProperties = {};
var propertyIsEnumerable = objectPropertyIsEnumerable.f; // `Object.{ entries, values }` methods implementation
var createMethod$2 = function createMethod(TO_ENTRIES) {
return function (it) {
var O = toIndexedObject(it);
var keys = objectKeys(O);
var length = keys.length;
var i = 0;
var result = [];
var key;
while (length > i) {
key = keys[i++];
if (!descriptors || propertyIsEnumerable.call(O, key)) {
result.push(TO_ENTRIES ? [key, O[key]] : O[key]);
}
}
return result;
};
};
var objectToArray = {
// `Object.entries` method
// https://tc39.github.io/ecma262/#sec-object.entries
entries: createMethod$2(true),
// `Object.values` method
// https://tc39.github.io/ecma262/#sec-object.values
values: createMethod$2(false)
};
var objectToArray_1 = objectToArray.entries;
var objectToArray_2 = objectToArray.values;
var $entries = objectToArray.entries; // `Object.entries` method
// https://tc39.github.io/ecma262/#sec-object.entries
_export({
target: 'Object',
stat: true
}, {
entries: function entries(O) {
return $entries(O);
}
});
var es_object_entries = {};
var freezing = !fails(function () {
return Object.isExtensible(Object.preventExtensions({}));
});
var internalMetadata = createCommonjsModule(function (module) {
var defineProperty = objectDefineProperty.f;
var METADATA = uid('meta');
var id = 0;
var isExtensible = Object.isExtensible || function () {
return true;
};
var setMetadata = function setMetadata(it) {
defineProperty(it, METADATA, {
value: {
objectID: 'O' + ++id,
// object ID
weakData: {} // weak collections IDs
}
});
};
var fastKey = function fastKey(it, create) {
// return a primitive with prefix
if (!isObject(it)) return typeof it == 'symbol' ? it : (typeof it == 'string' ? 'S' : 'P') + it;
if (!has(it, METADATA)) {
// can't set metadata to uncaught frozen object
if (!isExtensible(it)) return 'F'; // not necessary to add metadata
if (!create) return 'E'; // add missing metadata
setMetadata(it); // return object ID
}
return it[METADATA].objectID;
};
var getWeakData = function getWeakData(it, create) {
if (!has(it, METADATA)) {
// can't s