gistfile1.js

var types = {

  product: {
    
  },

  page: {
    route: [ function (req, res, next) {}, function (req, res, next) {} ]
  }

}


app.get('/:type', function (req, res, next) {

  var type = types[req.params.type];

  if (type.route) {
    //walk type.route
  }

  res.render(req.params.type);

});