| "use strict"; | |
| module.exports = function () { | |
| var arr = [1, "foo"], iterator, result; | |
| if (typeof arr.keys !== "function") return false; | |
| iterator = arr.keys(); | |
| if (!iterator) return false; | |
| if (typeof iterator.next !== "function") return false; | |
| result = iterator.next(); | |
| if (!result) return false; | |
| if (result.value !== 0) return false; | |
| if (result.done !== false) return false; | |
| return true; | |
| }; |