$ cd mean-demo

// modules =================================================
const express = require('express');
const app = express();

// set our port
const port = 3000;
app.get('/', (req, res) ⇒ res.send('Welcome to Tutorialspoint!'));

//defining route
app.get('/tproute', function (req, res) {
   res.send('This is routing for the application developed using Node and Express...');
});

// startup our app at http://localhost:3000
app.listen(port, () ⇒ console.log(`Example app listening on port ${port}!`));

$ npm start