'use strict';
// https://github.com/tc39/proposal-iterator-helpers
var $ = require('../internals/export');
+var apply = require('../internals/function-apply');
+var call = require('../internals/function-call');
var anObject = require('../internals/an-object');
var toPositiveInteger = require('../internals/to-positive-integer');
var createAsyncIteratorProxy = require('../internals/async-iterator-create-proxy');
-var AsyncIteratorProxy = createAsyncIteratorProxy(function (arg) {
+var AsyncIteratorProxy = createAsyncIteratorProxy(function (Promise, args) {
+ var iterator = this.iterator;
+ var returnMethod, result;
if (!this.remaining--) {
+ result = { done: true, value: undefined };
this.done = true;
- return { done: true, value: undefined };
- } return this.next.call(this.iterator, arg);
+ returnMethod = iterator['return'];
+ if (returnMethod !== undefined) {
+ return Promise.resolve(call(returnMethod, iterator)).then(function () {
+ return result;
+ });
+ }
+ return result;
+ } return apply(this.next, iterator, args);
});
$({ target: 'AsyncIterator', proto: true, real: true }, {