prototypes.coffee

{puts} = require 'sys'

MyClass = prototype ~>
  @doSomething = -> 3 + 5

foobar = new MyClass()
puts foobar.doSomething()

AnotherClass = prototype inherits MyClass ~>
  constructor = -> @abc = 3
  constructor withInitialValue = (@abc) ->
  @timesFour: -> @abc * 4

foobar = new AnotherClass()
puts foobar.doSomething()
puts foobar.timesFour()

foobar = new AnotherClass.withInitialValue(8)
puts foobar.timesFour()

prototypes.js

var _a, puts, MyClass, AnotherClass, foobar;
_a = require('sys');
puts = _a.puts;
MyClass = (function() {
  var ctor, _b, _c;
  ctor = function() {
    this.doSomething = function() {
      return 3 + 5;
    };
  };
  _b = new ctor();
  _c = function() {};
  _c.prototype = _b;
  return _c;
})();
foobar = new MyClass();
puts(foobar.doSomething());
AnotherClass = (function() {
  var ctor, _b, _c;
  ctor = function() {
    this.timesFour = function() {
      return this.abc * 4;
    };
  };
  ctor.prototype = MyClass.prototype;
  _b = new ctor();
  _c = function() {
    this.abc = 3
  };
  _c.prototype = _b;
  _c.withInitialValue = function(value) {
    this.abc = value;
  };
  _c.withInitialValue.prototype = _b;
  return _c;
})();
foobar = new AnotherClass();
puts(foobar.doSomething());
puts(foobar.timesFour());
foobar = new AnotherClass.withInitialValue(8);
puts(foobar.timesFour());