This is a transpiler. Luau is a completely different language and runtime.
It’s part of the big three Lua syntax flavours: Teal (Typescript-y), Fennel (Lisp-y), Moonscript (Ruby-ish)
> Fennel (Lisp-y),
For all (most?) intents and purposes, Fennel is lisp-language, not just lisp-y. It's Clojure-y if anything, which makes sense considering the creator of Fennel.
> (Ruby-ish)
Thanks for the chuckle.
They both have type systems and such. The comparison doesn't have to be about the compilation/transpilation process, but the developer experience is still important.
There is another one, which is not a transpiler: https://github.com/rochus-keller/luon