gistfile1.txt

include = (mixins...) ->
  to: (clazz)->
    result = class extends clazz
    for mxn in mixins
      for own k,v of mxn(clazz)
        result::[k] = v
    result

# This is mixin. It can access methods of the class it is mixed to
TestMixin = (target) ->
 foo: -> target::foo.apply @;console.log 'bar'


# define class with mixin. With requirejs it would be
# define [], ->
#   include(TestMixin).to class 
#     foo: -> console.log 'baz'

Test = include(TestMixin).to class 
  foo: -> console.log 'baz'

someVar = new Test

someVar.foo()