debian-mirror-gitlab/core-js/internals/create-iterator-constructor.js
2019-09-25 13:30:05 +05:30

16 lines
746 B
JavaScript

'use strict';
var IteratorPrototype = require('../internals/iterators-core').IteratorPrototype;
var create = require('../internals/object-create');
var createPropertyDescriptor = require('../internals/create-property-descriptor');
var setToStringTag = require('../internals/set-to-string-tag');
var Iterators = require('../internals/iterators');
var returnThis = function () { return this; };
module.exports = function (IteratorConstructor, NAME, next) {
var TO_STRING_TAG = NAME + ' Iterator';
IteratorConstructor.prototype = create(IteratorPrototype, { next: createPropertyDescriptor(1, next) });
setToStringTag(IteratorConstructor, TO_STRING_TAG, false, true);
Iterators[TO_STRING_TAG] = returnThis;
return IteratorConstructor;
};