Organize routes in Node.js

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I found a short example in ´Smashing Node.js: JavaScript Everywhere´ that I really liked.

By defining module-a and module-b as its own express applications, you can mount them into the main application as you like by using connects app.use( ) :

module-a.js

module.exports = function(){
  var express = require('express');
  var app = express();

  app.get('/:id', function(req, res){...});

  return app;
}();

module-b.js

module.exports = function(){
  var express = require('express');
  var app = express();

  app.get('/:id', function(req, res){...});

  return app;
}();

app.js

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

app.configure(..);

app.get("https://stackoverflow.com/", ....)
app.use('/module-a', require('./module-a'));    
app.use('/where/ever', require('./module-b'));    

app.listen(3000);

This would give you the routes

localhost:3000/
localhost:3000/module-a/:id
localhost:3000/where/ever/:id

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