--- /dev/null
+'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;
+};