require-express-setup.js

app.all('/:controller/:action/:id?', function(req, res) {
  require(['app/controller/' + req.params.controller], function(Controller) {
    Controller[req.params.action](req, res);
  });
});

app.all('/:controller', function(req, res) {
  require(['app/controller/' + req.params.controller], function(Controller) {
    Controller.index(req, res);
  });
});