Nushell looks pretty good! But, how to automatically convert all existing shell scripts -- to Nushell? I think it would be highly interesting if someone creat

Nushell looks pretty good! But, how to automatically convert all existing shell scripts -- to Nushell? I think it would be highly interesting if someone created "an LLVM for shell scripts"... In other words -- given a shell script that runs on one shell, turn that into a parse tree -- then transpile that parse tree back into a script such that the transpiled script runs on a different shell -- with guaranteed full compatibility... Maybe some work in this area is being done, or already has been done... I'd be interested if anyone knew of anything like this... If so -- then links would be appreciated!