I switched to Livescript for some tasks with success, however I didn't find a basic emacs mode for it. I'd like one with at least good indentation support.
I found:
livescript-mode, the one pointed by the official doc. It only converts the current file or buffer to JS. No indentation support.
livescript-mode (by bdowning), a fork from coffee-mode, but it messes up the indentation at each new line. This one has 158 forks, so hopefully someone came up with a decent set ?
livescript-mode (by yhisamatsu) is the most starred on github. It doesn't handle indentation either. It has a lot of private functions to deal with the syntax table.
How do you write livescript in emacs, what is your current configuration ?