An assets management module with convenience methods for quickly creating the objects you actually want to use. Includes Handlebars support through a helper function `asset` which can be used like `{{{asset '/app.js'}}}` to generate the correct link to the correct asset.

app.js

var express = require('express')
  , http = require('http')
  , hbs = require('hbs')
  , assets = require('./assets');

var app = express();

app.configure(function(){
  app.set('port', process.env.PORT || 3000);
  // Setup views using handlebars
  app.set('views', __dirname + '/client/views');
  app.set('view engine', 'html');
  app.engine('html', require('hbs').__express);
  app.use(assets); // Serve up compiled assets
});

// 
hbs.handlebars.registerHelper('asset', function(tag) {
  return assets.tag(tag);
});

app.get('/', function(req, res){
  res.render('index');
});

var server = app.listen(app.get('port'), function(){
  console.log("Express server listening on port " + app.get('port'));
});

assets.js

/**
 * Setup asset-rack (See https://github.com/techpines/asset-rack for details)
 */

var rack = require('asset-rack');

/**
* Convenience method to easily create snockets objects using an array of hashmaps
*/
function generateAssets(type, assets, prefix) {
  var compiled = [];
	for (var i = 0; i < assets.length; i++) {
		var options = {
			url: assets[i].url,
			filename: prefix + assets[i].filename
		};
		compiled.push(new rack[type](options));
	}
	return compiled;
}

var snockets = generateAssets("SnocketsAsset", [
{
	url: '/app.js',
	filename: '/app.js'
},
{
	url: '/jquery.js',
	filename: '/libs/jquery-1.8.3.min.js'
},
{
	url: '/handlebars.js',
	filename: '/libs/handlebars.runtime-1.0.rc.1.min.js'
},
{
	url: '/ember.js',
	filename: '/libs/ember.js'
},
{
	url: '/ember-data.js',
	filename: '/libs/ember-data.js'
}], __dirname + '/client/js'); // /client/js is the path to the project.

var browserify = generateAssets("BrowserifyAsset", [], '');

var assets = new rack.AssetRack([].concat(snockets, browserify));

assets.on('complete', function() {
	console.log('info: asset-rack compilation successful');
});

module.exports = assets;

Of note, the generateAssets function is poorly designed and does not support passing any options to a rack asset constructor other than "url" and "filename". I'll post a revision later, but for now be warned!