+++ /dev/null
-'use strict';
-var getPrototypeOf = require('../internals/object-get-prototype-of');
-var createNonEnumerableProperty = require('../internals/create-non-enumerable-property');
-var has = require('../internals/has');
-var wellKnownSymbol = require('../internals/well-known-symbol');
-var IS_PURE = require('../internals/is-pure');
-
-var ITERATOR = wellKnownSymbol('iterator');
-var BUGGY_SAFARI_ITERATORS = false;
-
-var returnThis = function () { return this; };
-
-// `%IteratorPrototype%` object
-// https://tc39.github.io/ecma262/#sec-%iteratorprototype%-object
-var IteratorPrototype, PrototypeOfArrayIteratorPrototype, arrayIterator;
-
-if ([].keys) {
- arrayIterator = [].keys();
- // Safari 8 has buggy iterators w/o `next`
- if (!('next' in arrayIterator)) BUGGY_SAFARI_ITERATORS = true;
- else {
- PrototypeOfArrayIteratorPrototype = getPrototypeOf(getPrototypeOf(arrayIterator));
- if (PrototypeOfArrayIteratorPrototype !== Object.prototype) IteratorPrototype = PrototypeOfArrayIteratorPrototype;
- }
-}
-
-if (IteratorPrototype == undefined) IteratorPrototype = {};
-
-// 25.1.2.1.1 %IteratorPrototype%[@@iterator]()
-if (!IS_PURE && !has(IteratorPrototype, ITERATOR)) {
- createNonEnumerableProperty(IteratorPrototype, ITERATOR, returnThis);
-}
-
-module.exports = {
- IteratorPrototype: IteratorPrototype,
- BUGGY_SAFARI_ITERATORS: BUGGY_SAFARI_ITERATORS
-};