NodeJS Frameworks

Web Server Frameworks

Express

var express = require('express');
var app = express();

app.get('/', function (req, res) {
  res.send('Hello World!');
});

app.listen(3000, function () {
  console.log('Example app listening on port 3000!');
});

Koa

var koa = require('koa');
var app = koa();

app.use(function *(next){
  var start = new Date;
  yield next;
  var ms = new Date - start;
  console.log('%s %s - %s', this.method, this.url, ms);
});

app.use(function *(){
  this.body = 'Hello World';
});

app.listen(3000);

Command Line Interface Frameworks

Commander.js

var program = require('commander');

program
  .version('0.0.1')

program
  .command('hi')
  .description('initialize project configuration')
  .action(function(){
        console.log('Hi my Friend!!!');
});

program
  .command('bye [name]')
  .description('initialize project configuration')
  .action(function(name){
        console.log('Bye ' + name + '. It was good to see you!');
});

program
  .command('*')
  .action(function(env){
    console.log('Enter a Valid command');
    terminate(true);
});

program.parse(process.argv);

Vorpal.js

const vorpal = require('vorpal')();

vorpal
  .command('foo', 'Outputs "bar".')
  .action(function(args, callback) {
    this.log('bar');
    callback();
  });

vorpal
  .delimiter('myapp$')
  .show();