CoffeeScript

HTML

<script src="https://github.com/jashkenas/coffee-script/raw/master/extras/coffee-script.js"></script>
<script type="text/coffeescript">
MarkdownDeep = new (->
  @Markdown = ->
    @Transform = (a) ->
      "html"
    undefined #return undefined instead of this.Transform
  undefined #return undefined instead of this.Markdown
)

markdown = new MarkdownDeep.Markdown()
alert markdown.Transform()
</script>