2 // https://github.com/tc39/proposal-iterator-helpers
3 var $ = require('../internals/export');
4 var anObject = require('../internals/an-object');
5 var toPositiveInteger = require('../internals/to-positive-integer');
6 var createIteratorProxy = require('../internals/iterator-create-proxy');
8 var IteratorProxy = createIteratorProxy(function (arg) {
9 if (!this.remaining--) {
13 var result = anObject(this.next.call(this.iterator, arg));
14 var done = this.done = !!result.done;
15 if (!done) return result.value;
18 $({ target: 'Iterator', proto: true, real: true }, {
19 take: function take(limit) {
20 return new IteratorProxy({
21 iterator: anObject(this),
22 remaining: toPositiveInteger(limit)