15 lines
401 B
JavaScript
15 lines
401 B
JavaScript
|
"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;
|
||
|
};
|