| | |
| | | 'use strict'; |
| | | // https://github.com/tc39/proposal-iterator-helpers |
| | | var $ = require('../internals/export'); |
| | | var apply = require('../internals/function-apply'); |
| | | var aCallable = require('../internals/a-callable'); |
| | | var anObject = require('../internals/an-object'); |
| | | var createIteratorProxy = require('../internals/iterator-create-proxy'); |
| | |
| | | |
| | | var IteratorProxy = createIteratorProxy(function (args) { |
| | | var iterator = this.iterator; |
| | | var result = anObject(this.next.apply(iterator, args)); |
| | | var result = anObject(apply(this.next, iterator, args)); |
| | | var done = this.done = !!result.done; |
| | | if (!done) return callWithSafeIterationClosing(iterator, this.mapper, result.value); |
| | | }); |
| | | |
| | | $({ target: 'Iterator', proto: true, real: true }, { |
| | | $({ target: 'Iterator', proto: true, real: true, forced: true }, { |
| | | map: function map(mapper) { |
| | | return new IteratorProxy({ |
| | | iterator: anObject(this), |