I'd think that the javascript JIT would need to be gutted and extensively re-engineered. There's a reason why each language has their own jit - in order to spee

I'd think that the javascript JIT would need to be gutted and extensively re-engineered. There's a reason why each language has their own jit - in order to speed up specifics parts of the language. While certain things are similar, the specific optimizations I'm sure follows the spec of the language so closely that it's not readily transferable to other languages. The general optimization strategies, like tracing, etc are techniques that can be ported, but if you start with a highly optimized jit for javascript, you're gonna have to rewrite large portions - so much that it would as much works as rewriting luajit from scratch.