Minimal Node JS Server with Express Routers as Modules

dishRouter.js

var express = require('express');
var bodyParser = require('body-parser');

var dishRouter = express.Router();

dishRouter.use(bodyParser.json());

dishRouter.route('/')
    .all(function (req, res, next) {
        res.writeHead(200, {'Content-Type': 'text/plain'});
        next();
    })

    .get(function (req, res, next) {
        res.end('Will send all the dishes to you!');
    })

    .post(function (req, res, next) {
        res.end('Will add the dish: ' + req.body.name + ' with details: ' + req.body.description);
    })

    .delete(function (req, res, next) {
        res.end('Deleting all dishes');
    });

dishRouter.route('/:dishId')
    .all(function (req, res, next) {
        res.writeHead(200, {'Content-Type': 'text/plain'});
        next();
    })

    .get(function (req, res, next) {
        res.end('Will send details of the dish: ' + req.params.dishId + ' to you!');
    })

    .put(function (req, res, next) {
        res.write('Updating the dish: ' + req.params.dishId + '\n');
        res.end('Will update the dish: ' + req.body.name +
            ' with details: ' + req.body.description);
    })

    .delete(function (req, res, next) {
        res.end('Deleting dish: ' + req.params.dishId);
    })

module.exports = dishRouter;

leaderRouter.js

var express = require('express');
var bodyParser = require('body-parser');

var leaderRouter = express.Router();

leaderRouter.use(bodyParser.json());

leaderRouter.route('/')
    .all(function (req, res, next) {
        res.writeHead(200, {'Content-Type': 'text/plain'});
        next();
    })

    .get(function (req, res, next) {
        res.end('Will send all the leaders to you!');
    })

    .post(function (req, res, next) {
        res.end('Will add the leader: ' + req.body.name + ' with details: ' + req.body.description);
    })

    .delete(function (req, res, next) {
        res.end('Deleting all leaders');
    });

leaderRouter.route('/:leaderId')
    .all(function (req, res, next) {
        res.writeHead(200, {'Content-Type': 'text/plain'});
        next();
    })

    .get(function (req, res, next) {
        res.end('Will send details of the leader: ' + req.params.leaderId + ' to you!');
    })

    .put(function (req, res, next) {
        res.write('Updating the leader: ' + req.params.leaderId + '\n');
        res.end('Will update the leader: ' + req.body.name +
            ' with details: ' + req.body.description);
    })

    .delete(function (req, res, next) {
        res.end('Deleting leader: ' + req.params.leaderId);
    })

module.exports = leaderRouter;

promoRouter.js

var express = require('express');
var bodyParser = require('body-parser');

var promoRouter = express.Router();

promoRouter.use(bodyParser.json());

promoRouter.route('/')
    .all(function (req, res, next) {
        res.writeHead(200, {'Content-Type': 'text/plain'});
        next();
    })

    .get(function (req, res, next) {
        res.end('Will send all the promotions to you!');
    })

    .post(function (req, res, next) {
        res.end('Will add the promotion: ' + req.body.name + ' with details: ' + req.body.description);
    })

    .delete(function (req, res, next) {
        res.end('Deleting all promotions');
    });

promoRouter.route('/:promoId')
    .all(function (req, res, next) {
        res.writeHead(200, {'Content-Type': 'text/plain'});
        next();
    })

    .get(function (req, res, next) {
        res.end('Will send details of the promotion: ' + req.params.promoId + ' to you!');
    })

    .put(function (req, res, next) {
        res.write('Updating the promotion: ' + req.params.promoId + '\n');
        res.end('Will update the promotion: ' + req.body.name +
            ' with details: ' + req.body.description);
    })

    .delete(function (req, res, next) {
        res.end('Deleting promotion: ' + req.params.promoId);
    })

module.exports = promoRouter;

server.js

var morgan = require('morgan');
var express = require('express');
var dishRouter = require('./dishRouter')
var promoRouter = require('./promoRouter')
var leaderRouter = require('./leaderRouter')

var hostname = 'localhost';
var port = 3000;

var app = express();

app.use(morgan('dev'));

app.use('/dishes',dishRouter);
app.use('/promotions',promoRouter)
app.use('/leadership',leaderRouter)

app.use(express.static(__dirname + '/public'));

app.listen(port, hostname, function(){
    //noinspection JSAnnotator
    console.log(`Server running at http://${hostname}:${port}/`);
});