is-implemented.js
409 Bytes
"use strict";
module.exports = function () {
var arr = ["foo", 1], iterator, result;
if (typeof arr.values !== "function") return false;
iterator = arr.values();
if (!iterator) return false;
if (typeof iterator.next !== "function") return false;
result = iterator.next();
if (!result) return false;
if (result.value !== "foo") return false;
if (result.done !== false) return false;
return true;
};