blob: 396a091af44035995a219bd899aade6121d92d40 [file] [log] [blame]
'use strict';
// https://github.com/tc39/proposal-iterator-helpers
var $ = require('../internals/export');
var anObject = require('../internals/an-object');
var toPositiveInteger = require('../internals/to-positive-integer');
var createAsyncIteratorProxy = require('../internals/create-async-iterator-proxy');
var AsyncIteratorProxy = createAsyncIteratorProxy(function (arg) {
if (!this.remaining--) {
this.done = true;
return { done: true, value: undefined };
} return this.next.call(this.iterator, arg);
});
$({ target: 'AsyncIterator', proto: true, real: true }, {
take: function take(limit) {
return new AsyncIteratorProxy({
iterator: anObject(this),
remaining: toPositiveInteger(limit)
});
}
});