Definitely it is, and it does open doors for this, I'm just curious if running say, a JavaScript or Python interpreter on top of WASM would be more performant than V8, given that there could be two layers of VMs, ie the WASM VM and the JS/Python VM running on it.
I'd hope that they'd be comparable in performance, especially when it comes to doing client-side web app things in languages other than JavaScript.
Currently JIT in wasm is incomplete. That is a wasm program cannot modify itself (it would need to create new modules and ask the host to load them with a shared memory)
So compiling JS to wasm would probably be limited to the performance of interpreting JS on native
I'd hope that they'd be comparable in performance, especially when it comes to doing client-side web app things in languages other than JavaScript.