[hunterb123]

v8 is a JIT engine, WASM would not support it.

JavaScriptCore has been compiled to WASM though:

https://mbbill.github.io/JSC.js/

People usually ask why, the answer is usually for fun or for sandboxed plugins.

[amluto]

I imagine that, if one were feeling extremely masochistic, one could generate WASM, JIT-style, and load it as needed. The result may not perform well.

[throwaway894345]

I assumed the JIT would emit WASM.