node.js - Deploy node server on heroku and receive "SyntaxError: Unexpected token import" -

i have server written in node.js using node 6.10.2 , ecmascript. want upload heroku, locally when rung server "npm start" server starts without problem, on heroku recevied following error

import express 'express';  syntaxerror: unexpected token import 

how can fix error?

thanks

you have 2 options:

1. use require() instead of import
2. transpile code

node doesn't support import keyword. in node import modules require() function. example can change this:

import express 'express'; 

to this:

const express = require('express'); 

or can transpile code e.g. babel if want use import. see:

• https://babeljs.io/