ola5doc/sys/node_modules/es5-ext/string/#/@@iterator/is-implemented.js

'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;
};