Can I use AngularJS to handle and load my objects

I've got some CoffeeScript classes which I use and extend in my code. How can I use angularjs to not have to create the usual module cruft like

MyNamespace = MyNamespace || {}
MyNamespace.SuperClass = class

and in a different file

MyNamespace = MyNamespace || {}
class ChildClass extends MyNamespace.SuperClass
MyNamespace.ChildClass = ChildClass

Could I simply write

angular('MyModule').factory, 'SuperClass', () ->
    class SuperClass
        constructor: (@id) ->
    return SuperClass

and extend from that class via

angular('MyModule').factory, 'ChildClass', ['SuperClass', (SuperClass) ->
    class ChildClass extends SuperClass
        constructor: (id) ->
            super(id)
    return ChildClass
]

My problem is actually that Im using CoffeeScript to compile all objects into a single file. Now if a childclass is above the baseclass, the baseclass will be undefined and I'll get an error. I'm looking for an elegant and easy way how to solve this.