callable.ls

# a trick that makes class instances function instances and not object instances
# aka - callable objects. (expects object to have a 'call' function defined)

callable = (cls) ->
  callable_cls = (...args) ->
    obj = (...args) -> obj.call.apply obj, args
    obj.__proto__ = cls::
    cls.apply obj, args
    obj

# usage: 

class1 = ->
  @bla = 666
  
class1::f = -> 3
class1::call = -> @bla
class2 = callable class1

obj = new class2()

console.log obj() # tada
console.log obj.f()
console.log obj.bla