Coffeescript Delegates

delegates.coffee

class Something
  constructor: ->
    @delegateObject = new Messager

class Messager
  testing: (int) ->
    console.log int
  woot: (bool) ->
    console.log bool
  nothing: (array) ->
    console.log array

Object::delegates = (methods, to) ->
  methods.forEach (method) =>
    this::[method] = (args...) ->
      @[to][method].apply(this, args)

Something.delegates(['testing','woot','nothing','missing'], 'delegateObject')

s = new Something

s.testing(1)
s.woot(false)
s.nothing([1,2,4])

delegates.js

var Something, Messager;

Something = (function() {

  function Something() {
    this.delegateObject = new Messager;
  }

  return Something;

})();

Messager = (function() {

  function Messager() {}

  Messager.prototype.testing = function(int) {
    return console.log(int);
  };

  Messager.prototype.woot = function(bool) {
    return console.log(bool);
  };

  Messager.prototype.nothing = function(array) {
    return console.log(array);
  };

  return Messager;

})();

Object.prototype.delegates = function(methods, to) {
  var _this = this;
  return methods.forEach(function(method) {
    return _this.prototype[method] = function() {
      var args;
      args = 1 <= arguments.length ? __slice.call(arguments, 0) : [];
      return this[to][method].apply(this, args);
    };
  });
};

Something.delegates(['testing', 'woot', 'nothing', 'missing'], 'delegateObject');

s = new Something;

s.testing(1);

s.woot(false);

s.nothing([1, 2, 4]);

I've just googled it and it helped me a lot. Really awesome!