Repitition with CoffeeScript Class setup for each generated file due to "bare => false" option as described in https://github.com/rails/rails/issues/1125

application.js

(function() {
  window.Blogolio = {
    Models: {},
    Collections: {},
    Routers: {},
    Views: {}
  };
}).call(this);
(function() {
  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;
  };
  Blogolio.Models.User = (function() {
    __extends(User, Backbone.Model);
    function User() {
      User.__super__.constructor.apply(this, arguments);
    }
    User.prototype.paramRoot = 'user';
    User.prototype.defaults = {
      name: null,
      username: null
    };
    return User;
  })();
  Blogolio.Collections.Users = (function() {
    __extends(Users, Backbone.Collection);
    function Users() {
      Users.__super__.constructor.apply(this, arguments);
    }
    Users.prototype.model = Blogolio.Models.User;
    Users.prototype.url = '/users';
    return Users;
  })();
}).call(this);
(function() {
  var _base;
  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;
  }, __bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; };
  (_base = Blogolio.Views).Users || (_base.Users = {});
  Blogolio.Views.Users.Edit = (function() {
    __extends(Edit, Backbone.View);
    function Edit() {
      Edit.__super__.constructor.apply(this, arguments);
    }
    Edit.prototype.events = {
      "submit #edit-user": "update"
    };
    Edit.prototype.update = function(e) {
      e.preventDefault();
      e.stopPropagation();
      return this.options.model.save(null, {
        success: __bind(function(model) {
          this.options.model = model;
          return window.location.hash = "/" + this.options.model.id;
        }, this)
      });
    };
    return Edit;
  })();
}).call(this);
(function() {
  var _base;
  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;
  };
  (_base = Blogolio.Views).Users || (_base.Users = {});
  Blogolio.Views.Users.Index = (function() {
    __extends(Index, Backbone.View);
    function Index() {
      Index.__super__.constructor.apply(this, arguments);
    }
    Index.prototype.initialize = function() {
      _.bindAll(this, 'addOne', 'addAll', 'render');
      return this.options.users.bind('reset', this.addAll);
    };
    Index.prototype.addAll = function() {
      return this.options.users.each(this.addOne);
    };
    Index.prototype.addOne = function(user) {
      var view;
      view = new Blogolio.Views.Users.UserView({
        model: user
      });
      return this.$("tbody").append(view.render().el);
    };
    return Index;
  })();
}).call(this);
(function() {
  var _base;
  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;
  }, __bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; };
  (_base = Blogolio.Views).Users || (_base.Users = {});
  Blogolio.Views.Users.New = (function() {
    __extends(New, Backbone.View);
    New.prototype.events = {
      "submit #new-user": "save"
    };
    function New(options) {
      New.__super__.constructor.call(this, options);
      this.options.model = new this.options.collection.model();
      this.options.model.bind("change:errors", __bind(function() {
        return this.render();
      }, this));
    }
    New.prototype.save = function(e) {
      e.preventDefault();
      e.stopPropagation();
      this.options.model.unset("errors");
      return this.options.collection.create(this.options.model.toJSON(), {
        success: __bind(function(model) {
          this.options.model = model;
          return window.location.hash = "/" + this.options.model.id;
        }, this),
        error: __bind(function(model, jqXHR) {
          return this.options.model.set({
            errors: $.parseJSON(jqXHR.responseText)
          });
        }, this)
      });
    };
    return New;
  })();
}).call(this);
(function() {
  var _base;
  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;
  };
  (_base = Blogolio.Views).Users || (_base.Users = {});
  Blogolio.Views.Users.Show = (function() {
    __extends(Show, Backbone.View);
    function Show() {
      Show.__super__.constructor.apply(this, arguments);
    }
    return Show;
  })();
}).call(this);
(function() {
  var _base;
  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;
  };
  (_base = Blogolio.Views).Users || (_base.Users = {});
  Blogolio.Views.Users.User = (function() {
    __extends(User, Backbone.View);
    function User() {
      User.__super__.constructor.apply(this, arguments);
    }
    User.prototype.events = {
      "click .destroy": "destroy"
    };
    User.prototype.tagName = "tr";
    User.prototype.destroy = function() {
      this.options.model.destroy();
      this.remove();
      return false;
    };
    return User;
  })();
}).call(this);
(function() {
  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;
  };
  Blogolio.Routers.Users = (function() {
    __extends(Users, Backbone.Router);
    function Users() {
      Users.__super__.constructor.apply(this, arguments);
    }
    Users.prototype.initialize = function(options) {
      this.users = new Blogolio.Collections.Users();
      return this.users.reset(options.users);
    };
    Users.prototype.routes = {
      "/new": "newUser",
      "/index": "index",
      "/:id/edit": "edit",
      "/:id": "show",
      ".*": "index"
    };
    Users.prototype.newUser = function() {
      return this.view = new Blogolio.Views.Users.New({
        collection: this.users
      });
    };
    Users.prototype.index = function() {
      return this.view = new Blogolio.Views.Users.Index({
        users: this.users
      });
    };
    Users.prototype.show = function(id) {
      var user;
      user = this.users.get(id);
      return this.view = new Blogolio.Views.Users.Show({
        model: user
      });
    };
    Users.prototype.edit = function(id) {
      var user;
      user = this.users.get(id);
      return this.view = new Blogolio.Views.Users.Edit({
        model: user
      });
    };
    return Users;
  })();
}).call(this);
(function() {

}).call(this);

blogolio.js.coffee

#= require_self
#= require_tree ./models
#= require_tree ./views
#= require_tree ./routers

window.Blogolio =
  Models: {}
  Collections: {}
  Routers: {}
  Views: {}

models user.js.coffee

class Blogolio.Models.User extends Backbone.Model
  paramRoot: 'user'

  defaults:
    name: null
    username: null
  
class Blogolio.Collections.Users extends Backbone.Collection
  model: Blogolio.Models.User
  url: '/users'

routers user.js.coffee

class Blogolio.Routers.Users extends Backbone.Router
  initialize: (options) ->
    @users = new Blogolio.Collections.Users()
    @users.reset options.users

  routes:
    "/new": "newUser"
    "/index": "index"
    "/:id/edit": "edit"
    "/:id": "show"
    ".*": "index"

  newUser: ->
    @view = new Blogolio.Views.Users.New(collection: @users)
#    $("#users").html(@view.render().el)

  index: ->
    @view = new Blogolio.Views.Users.Index(users: @users)
#    $("#users").html(@view.render().el)

  show: (id) ->
    user = @users.get(id)
    
    @view = new Blogolio.Views.Users.Show(model: user)
#    $("#users").html(@view.render().el)
    
  edit: (id) ->
    user = @users.get(id)

    @view = new Blogolio.Views.Users.Edit(model: user)
#    $("#users").html(@view.render().el)
  

views users edit.js.coffee

Blogolio.Views.Users ||= {}

class Blogolio.Views.Users.Edit extends Backbone.View
#  template: JST["backbone/templates/users/edit"]
  
  events:
    "submit #edit-user": "update"
    
  update: (e) ->
    e.preventDefault()
    e.stopPropagation()
    
    @options.model.save(null,
      success:(model) =>
        @options.model = model
        window.location.hash = "/#{@options.model.id}"
    )
    
#  render: ->
#    $(this.el).html(this.template(@options.model.toJSON() ))
#
#    this.$("form").backboneLink(@options.model)
#
#    return this

views users index.js.coffee

Blogolio.Views.Users ||= {}

class Blogolio.Views.Users.Index extends Backbone.View
#  template: JST["backbone/templates/users/index"]
    
  initialize: () ->
    _.bindAll(this, 'addOne', 'addAll', 'render');
    
    @options.users.bind('reset', this.addAll);
   
  addAll: () ->
    @options.users.each(this.addOne)
  
  addOne: (user) ->
    view = new Blogolio.Views.Users.UserView({model : user})
    this.$("tbody").append(view.render().el)
       
#  render: ->
#    $(this.el).html(this.template(users: this.options.users.toJSON() ))
#    @addAll()
#
#    return this

views users new.js.coffee

Blogolio.Views.Users ||= {}

class Blogolio.Views.Users.New extends Backbone.View
#  template: JST["backbone/templates/users/new"]
  
  events:
    "submit #new-user": "save"
    
  constructor: (options) ->
    super(options)
    @options.model = new @options.collection.model()

    @options.model.bind("change:errors", () =>
      this.render()
    )
    
  save: (e) ->
    e.preventDefault()
    e.stopPropagation()
      
    @options.model.unset("errors")
    
    @options.collection.create(@options.model.toJSON(), 
      success: (model) =>
        @options.model = model
        window.location.hash = "/#{@options.model.id}"
        
      error: (model, jqXHR) =>
        @options.model.set({errors: $.parseJSON(jqXHR.responseText)})
    )
    
#  render: ->
#    $(this.el).html(this.template(@options.model.toJSON() ))
#
#    this.$("form").backboneLink(@options.model)
#
#    return this

views users show.js.coffee

Blogolio.Views.Users ||= {}

class Blogolio.Views.Users.Show extends Backbone.View
#  template: JST["backbone/templates/users/show"]
   
#  render: ->
#    $(this.el).html(this.template(this.options.model.toJSON() ))
#    return this

views users user.js.coffee

Blogolio.Views.Users ||= {}

class Blogolio.Views.Users.User extends Backbone.View
#  template: JST["backbone/templates/users/user"]
  
  events:
    "click .destroy" : "destroy"
      
  tagName: "tr"
  
  destroy: () ->
    @options.model.destroy()
    this.remove()
    
    return false
    
#  render: ->
#    $(this.el).html(this.template(this.options.model.toJSON() ))
#    return this

The repetition is unfortunate, but I think the gains from having modularized code outweigh the costs of the repetition. Hopefully future minifiers will be smart enough to pull those helpers out. For now, if you really wanted to squeeze out those few extra bytes, I'd suggest pulling out CoffeeScript's __extends helper and applying it yourself rather than using the extends keyword. That way you can still keep your code modularized.

Thanks for the response. That's actually what I ended up doing as I tweeted about it. For example:

Blogolio.Views.Users.User = Backbone.View.extend {
  #...
}

I'll play with it more and hopefully come up with a solution that keeps Classes but avoids repetition.