node.js - Using ES6 in WebStorm provide errors -

i want use es6 in webstorm (node.js app) , got error while example use import etc.

i go preferences ->language , change ecmascript6 , in addition right click , choose javascriptlibrary , choose ecma script 6, why errors ?

i use webstorm 2016.2

this error:

(function (exports, require, module, __filename, __dirname) { import {expect} 'chai';                                                               ^^^^^^  syntaxerror: unexpected reserved word 

update

this code i've used

import {expect} 'chai'; import path "path"; (function (exports, require, module, __filename, __dirname) { import {expect} 'chai';