Base: =>
Base::func: string =>
  'zero/' + string

FirstChild: =>
FirstChild extends Base
FirstChild::func: string =>
  super('one/') + string

SecondChild: =>
SecondChild extends FirstChild
SecondChild::func: string =>
  super('two/') + string

ThirdChild: =>
  this.array: [1, 2, 3]
ThirdChild extends SecondChild
ThirdChild::func: string =>
  super('three/') + string

result: (new ThirdChild()).func 'four'

print result is 'zero/one/two/three/four'


TopClass: arg =>
  this.prop: 'top-' + arg

SuperClass: arg =>
  super 'super-' + arg

SubClass: =>
  super 'sub'

SuperClass extends TopClass
SubClass extends SuperClass

print((new SubClass()).prop is 'top-super-sub')