Cool idea. They are taking the LLVM and making more back ends. It would be cool if they could support as many back-ends as Haxe. I've developed in Haxe before and I can say I much prefer it to writing in javascript directly.

I hope these projects can continue. I look forward to the day when I can compile in any language to any platform. Different languages have different strengths. It is unfortunate that these days our choice of language is tethered to the platform we wish to deploy on.

Haxe: http://haxe.org