'use strict'; var FREEZING = require('../internals/freezing'); var globalThis = require('../internals/global-this'); var uncurryThis = require('../internals/function-uncurry-this'); var defineBuiltIns = require('../internals/define-built-ins'); var InternalMetadataModule = require('../internals/internal-metadata'); var collection = require('../internals/collection'); var collectionWeak = require('../internals/collection-weak'); var isObject = require('../internals/is-object'); var enforceInternalState = require('../internals/internal-state').enforce; var fails = require('../internals/fails'); var NATIVE_WEAK_MAP = require('../internals/weak-map-basic-detection'); var $Object = Object; // eslint-disable-next-line es/no-array-isarray -- safe var isArray = Array.isArray; // eslint-disable-next-line es/no-object-isextensible -- safe var isExtensible = $Object.isExtensible; // eslint-disable-next-line es/no-object-isfrozen -- safe var isFrozen = $Object.isFrozen; // eslint-disable-next-line es/no-object-issealed -- safe var isSealed = $Object.isSealed; // eslint-disable-next-line es/no-object-freeze -- safe var freeze = $Object.freeze; // eslint-disable-next-line es/no-object-seal -- safe var seal = $Object.seal; var IS_IE11 = !globalThis.ActiveXObject && 'ActiveXObject' in globalThis; var InternalWeakMap; var wrapper = function (init) { return function WeakMap() { return init(this, arguments.length ? arguments[0] : undefined); }; }; // `WeakMap` constructor // https://tc39.es/ecma262/#sec-weakmap-constructor var $WeakMap = collection('WeakMap', wrapper, collectionWeak); var WeakMapPrototype = $WeakMap.prototype; var nativeSet = uncurryThis(WeakMapPrototype.set); // Chakra Edge bug: adding frozen arrays to WeakMap unfreeze them var hasMSEdgeFreezingBug = function () { return FREEZING && fails(function () { var frozenArray = freeze([]); nativeSet(new $WeakMap(), frozenArray, 1); return !isFrozen(frozenArray); }); }; // IE11 WeakMap frozen keys fix // We can't use feature detection because it crash some old IE builds // https://github.com/zloirock/core-js/issues/485 if (NATIVE_WEAK_MAP) if (IS_IE11) { InternalWeakMap = collectionWeak.getConstructor(wrapper, 'WeakMap', true); InternalMetadataModule.enable(); var nativeDelete = uncurryThis(WeakMapPrototype['delete']); var nativeHas = uncurryThis(WeakMapPrototype.has); var nativeGet = uncurryThis(WeakMapPrototype.get); defineBuiltIns(WeakMapPrototype, { 'delete': function (key) { if (isObject(key) && !isExtensible(key)) { var state = enforceInternalState(this); if (!state.frozen) state.frozen = new InternalWeakMap(); return nativeDelete(this, key) || state.frozen['delete'](key); } return nativeDelete(this, key); }, has: function has(key) { if (isObject(key) && !isExtensible(key)) { var state = enforceInternalState(this); if (!state.frozen) state.frozen = new InternalWeakMap(); return nativeHas(this, key) || state.frozen.has(key); } return nativeHas(this, key); }, get: function get(key) { if (isObject(key) && !isExtensible(key)) { var state = enforceInternalState(this); if (!state.frozen) state.frozen = new InternalWeakMap(); return nativeHas(this, key) ? nativeGet(this, key) : state.frozen.get(key); } return nativeGet(this, key); }, set: function set(key, value) { if (isObject(key) && !isExtensible(key)) { var state = enforceInternalState(this); if (!state.frozen) state.frozen = new InternalWeakMap(); nativeHas(this, key) ? nativeSet(this, key, value) : state.frozen.set(key, value); } else nativeSet(this, key, value); return this; } }); // Chakra Edge frozen keys fix } else if (hasMSEdgeFreezingBug()) { defineBuiltIns(WeakMapPrototype, { set: function set(key, value) { var arrayIntegrityLevel; if (isArray(key)) { if (isFrozen(key)) arrayIntegrityLevel = freeze; else if (isSealed(key)) arrayIntegrityLevel = seal; } nativeSet(this, key, value); if (arrayIntegrityLevel) arrayIntegrityLevel(key); return this; } }); }