[kmf]

I think the advantage of this project being open source becomes really clear in situations like this: I'd imagine js2coffee[1] will cover most of their bases, but in the situation that it doesn't, they have a (pretty active) Github community to fall back on for the finicky bits of conversion.

[1]: http://js2coffee.org/

[jaredmcateer]

It's been a while since I looked at js2coffee, it's nice that they've eventually fixed the lack of transferring comments issue.