is-implemented.js
479 Bytes
"use strict";
var iteratorSymbol = require("es6-symbol").iterator;
module.exports = function () {
var str = "🙈f", iterator, result;
if (typeof str[iteratorSymbol] !== "function") return false;
iterator = str[iteratorSymbol]();
if (!iterator) return false;
if (typeof iterator.next !== "function") return false;
result = iterator.next();
if (!result) return false;
if (result.value !== "🙈") return false;
if (result.done !== false) return false;
return true;
};