77 lines
3 KiB
JavaScript
Executable file
77 lines
3 KiB
JavaScript
Executable file
'use strict';
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var $ = require('../internals/export');
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var global = require('../internals/global');
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var InternalMetadataModule = require('../internals/internal-metadata');
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var fails = require('../internals/fails');
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var createNonEnumerableProperty = require('../internals/create-non-enumerable-property');
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var iterate = require('../internals/iterate');
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var anInstance = require('../internals/an-instance');
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var isCallable = require('../internals/is-callable');
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var isObject = require('../internals/is-object');
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var setToStringTag = require('../internals/set-to-string-tag');
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var defineProperty = require('../internals/object-define-property').f;
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var forEach = require('../internals/array-iteration').forEach;
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var DESCRIPTORS = require('../internals/descriptors');
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var InternalStateModule = require('../internals/internal-state');
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var setInternalState = InternalStateModule.set;
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var internalStateGetterFor = InternalStateModule.getterFor;
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module.exports = function (CONSTRUCTOR_NAME, wrapper, common) {
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var IS_MAP = CONSTRUCTOR_NAME.indexOf('Map') !== -1;
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var IS_WEAK = CONSTRUCTOR_NAME.indexOf('Weak') !== -1;
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var ADDER = IS_MAP ? 'set' : 'add';
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var NativeConstructor = global[CONSTRUCTOR_NAME];
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var NativePrototype = NativeConstructor && NativeConstructor.prototype;
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var exported = {};
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var Constructor;
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if (!DESCRIPTORS || !isCallable(NativeConstructor)
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|| !(IS_WEAK || NativePrototype.forEach && !fails(function () { new NativeConstructor().entries().next(); }))
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) {
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// create collection constructor
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Constructor = common.getConstructor(wrapper, CONSTRUCTOR_NAME, IS_MAP, ADDER);
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InternalMetadataModule.enable();
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} else {
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Constructor = wrapper(function (target, iterable) {
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setInternalState(anInstance(target, Prototype), {
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type: CONSTRUCTOR_NAME,
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collection: new NativeConstructor()
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});
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if (iterable != undefined) iterate(iterable, target[ADDER], { that: target, AS_ENTRIES: IS_MAP });
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});
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var Prototype = Constructor.prototype;
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var getInternalState = internalStateGetterFor(CONSTRUCTOR_NAME);
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forEach(['add', 'clear', 'delete', 'forEach', 'get', 'has', 'set', 'keys', 'values', 'entries'], function (KEY) {
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var IS_ADDER = KEY == 'add' || KEY == 'set';
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if (KEY in NativePrototype && !(IS_WEAK && KEY == 'clear')) {
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createNonEnumerableProperty(Prototype, KEY, function (a, b) {
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var collection = getInternalState(this).collection;
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if (!IS_ADDER && IS_WEAK && !isObject(a)) return KEY == 'get' ? undefined : false;
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var result = collection[KEY](a === 0 ? 0 : a, b);
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return IS_ADDER ? this : result;
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});
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}
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});
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IS_WEAK || defineProperty(Prototype, 'size', {
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configurable: true,
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get: function () {
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return getInternalState(this).collection.size;
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}
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});
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}
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setToStringTag(Constructor, CONSTRUCTOR_NAME, false, true);
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exported[CONSTRUCTOR_NAME] = Constructor;
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$({ global: true, forced: true }, exported);
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if (!IS_WEAK) common.setStrong(Constructor, CONSTRUCTOR_NAME, IS_MAP);
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return Constructor;
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};
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