const express = require('express'); const bodyParser = require('body-parser'); const createServer = (port = 3500) => { const app = express(); app.use(bodyParser.json()); app.use(bodyParser.urlencoded({ extended: false })); app.use((req, res, next) => { res.header('Access-Control-Allow-Origin', '*'); res.header('Access-Control-Allow-Headers', 'Origin, X-Requested-With, Content-Type, Accept'); next(); }); app.listen(port, () => { console.log(`server starts successfully at ${port}!`); }); return app; }; module.exports = { createServer, };