Express vs Koa vs Hapi - Server setup

express_koa_hapi_server_setup.js

//Expressjs server setup
const express = require('express');
const app = express();

let server = app.listen(3000, ()=> {
    console.log('Express is listening to http://localhost:3000');
});


//Koajs server setup
const koa = require('koa');
const app = koa();

let server = app.listen(3000, ()=> {
    console.log('Koa is listening to http://localhost:3000');
});

//Hapijs server setup
const hapi = require('hapi');
const server = new hapi.Server(3000);

server.start(()=> {
    console.log('Hapi is listening to http://localhost:3000');
});