Comment by MatthewPhillips

Their framework is intended solely for coffeescript devs. Here's their example in javascript:

  (function() {
  var Shopify;
  var __hasProp = Object.prototype.hasOwnProperty, __extends = function(child, parent) {
    for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; }
    function ctor() { this.constructor = child; }
    ctor.prototype = parent.prototype;
    child.prototype = new ctor;
    child.__super__ = parent.prototype;
    return child;
  };
  Shopify = (function() {
    function Shopify() {
      Shopify.__super__.constructor.apply(this, arguments);
    }
    __extends(Shopify, Batman.App);
    Shopify.root('products#index');
    Shopify.resources('products');
    return Shopify;
  })();
  Shopify.Product = (function() {
    function Product() {
      Product.__super__.constructor.apply(this, arguments);
    }
    __extends(Product, Batman.Model);
    Product.persist(Batman.RestStorage);
    return Product;
  })();
  Shopify.ProductsController = (function() {
    function ProductsController() {
      ProductsController.__super__.constructor.apply(this, arguments);
    }
    __extends(ProductsController, Batman.Model);
    ProductsController.prototype.index = function() {
      return this.redirect({
        action: 'show',
        id: 1
      });
    };
    ProductsController.prototype.show = function(params) {
      return this.product = Shopify.Product.find(params.id);
    };
    return ProductsController;
  })();

}).call(this);