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