Unfortunately right now asm.js is an unsuitable target for any dynamically typed language with garbage collection, because you have to run your whole runtime sy

Unfortunately right now asm.js is an unsuitable target for any dynamically typed language with garbage collection, because you have to run your whole runtime system and a garbage collector as asm.js'ied code, which is not exactly what you want in terms of overhead. Asm.js is a target for anything that is statically typed and low-level (e.g. C).