| | |
| | | 'use strict'; |
| | | var $ = require('../internals/export'); |
| | | var IS_PURE = require('../internals/is-pure'); |
| | | var getBuiltIn = require('../internals/get-built-in'); |
| | | var bind = require('../internals/function-bind-context'); |
| | | var call = require('../internals/function-call'); |
| | | var aCallable = require('../internals/a-callable'); |
| | | var anObject = require('../internals/an-object'); |
| | | var bind = require('../internals/function-bind-context'); |
| | | var speciesConstructor = require('../internals/species-constructor'); |
| | | var getMapIterator = require('../internals/get-map-iterator'); |
| | | var iterate = require('../internals/iterate'); |
| | | |
| | | // `Map.prototype.mapValues` method |
| | | // https://github.com/tc39/proposal-collection-methods |
| | | $({ target: 'Map', proto: true, real: true, forced: IS_PURE }, { |
| | | $({ target: 'Map', proto: true, real: true, forced: true }, { |
| | | mapValues: function mapValues(callbackfn /* , thisArg */) { |
| | | var map = anObject(this); |
| | | var iterator = getMapIterator(map); |
| | | var boundFunction = bind(callbackfn, arguments.length > 1 ? arguments[1] : undefined, 3); |
| | | var boundFunction = bind(callbackfn, arguments.length > 1 ? arguments[1] : undefined); |
| | | var newMap = new (speciesConstructor(map, getBuiltIn('Map')))(); |
| | | var setter = aCallable(newMap.set); |
| | | iterate(iterator, function (key, value) { |
| | | setter.call(newMap, key, boundFunction(value, key, map)); |
| | | call(setter, newMap, key, boundFunction(value, key, map)); |
| | | }, { AS_ENTRIES: true, IS_ITERATOR: true }); |
| | | return newMap; |
| | | } |