[boothead]

I'd hardly characterise coffeescript generated js as difficult to debug (even the OO flavoured bits). My experience and that of most others I've seen online is that the mapping from the js that you debug back to the coffeescript that generated is trivially done in your head.

[MrUnknown]

As someone who barely knows any JavaScript, but want to learn CoffeeScript (I know ruby, and they are similar), even I can do this.