Different approach to properties in CoffeeScript class (CoffeeScript 1.5.0 compatible) Property names are not written as strings

gistfile1.coffee

Function::property = (prop) ->
  for key, value of prop
    Object.defineProperty @prototype, key, value

Function::staticProperty = (prop) ->
  for key, value of prop
    Object.defineProperty @, key, value

class MyClass
  privateVar = 5
  testVar = 10

  constructor: ->
    # Doing stuff here

  # Instance property
  @property var:
    get: -> privateVar

  @property test:
    get: -> testVar
    set: (value) -> testVar = value if value > 5
    
  # Static property
  @staticProperty staticVar:
    get: -> privateVar * 20

myClass = new MyClass()
console.log myClass.var
console.log myClass.test
myClass.test = 10
console.log myClass.test
console.log myClass.staticVar