Simple ES6 node endpoint

main.js

import express from 'express';
import logger from 'morgan';
import bodyParser from 'body-parser';

let app = express();

app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded());

// Cors
app.all('*', (req, res, next) => {
  res.header('Access-Control-Allow-Origin', '*');
  res.header('Access-Control-Allow-Headers', 'X-Requested-With');
  res.header('Access-Control-Allow-Credentials', true);
  next();
 });

app.get('/', (req, res) => {
  res.json({message: 'ok'});
});

export default app;

package.json

{
  "name": "Simple server",
  "version": "1.0.0",
  "description": "",
  "main": "server.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "start": "node server.js"
  },
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "babel": "^5.8.23",
    "body-parser": "^1.13.3",
    "express": "^4.13.3",
    "morgan": "^1.6.1"
  }
}

server.js

require('babel/register');
var app = require('./main');
var PORT = 9003;

app.listen(PORT, function () {
  console.log('Simple server listening on %d', PORT);
});