how do I use coffeescript's namespace code in Node?

related: Classes within Coffeescript 'Namespace'

OK so after reading that post I grabbed the namespace function and put it in its own file.

namespace.coffee

namespace = (target, name, block) ->
  [target, name, block] = [(if typeof exports isnt 'undefined' then exports else window), arguments...] if arguments.length < 3
  top    = target
  target = target[item] or= {} for item in name.split '.'
  block target, top
  console.log "created namespace "+ name


root = exports ? window
root.namespace = namespace

and then in Repl:

>  namespace = require('./assets/js/namespace.js').namespace
[Function]                                              

If I toString() it it's correct.

OK, so now I want to use it: ns.coffee (from Sandro's answer)

namespace = require('./namespace.js').namespace

class MyFirstClass
  myFunc: () ->
    console.log 'works'

class MySecondClass
  constructor: (@options = {}) ->
  myFunc: () ->
    console.log 'works too'
    console.log @options

namespace "Project.Something", (exports) ->
  exports.MyFirstClass = MyFirstClass
  exports.MySecondClass = MySecondClass
  console.log 'done with exports'

Then I run it in Repl:

ns = require('./assets/js/ns.js') # compiled ns.coffee
done with exports
created namespace Project.Something
{}

It doesn't appear to be working:

> ns.MyFirstClass                                              
undefined                                                      
> ns.MySecondClass                                             
undefined                                                      
> ns.Project.Something.MySecondClass                           
TypeError: Cannot read property 'Something' of undefined      

Am I doing something wrong here?