Luau already has Luau Language Server which works extremely well for vscode w/ nvim & zed support as well. It surfaces Luau's own diagnostics w/ autocomplete, strict type checking, etc., leading to a better DX (for me) than using Ruby or Python. I primarily use Luau as a shell scripting & general purpose programming language w/ my own runtime (ala node is to js) called seal. Many Roblox devs use a different (much more popular) runtime called Lune for Roblox CI/CD, unit & integration testing, etc.
Yes! As an embedder you can write definition and declaration files! Declaration files are usually named like `globals.d.luau` and have a slightly different syntax than regular Luau. But it's really easy to set up global def files that you can pass to luau-lsp. Atm for my Luau runtime (seal), I have a small globals.d.luau and just bundle all the stdlib type files in a typedefs folder that gets included alongside my binary: https://github.com/deviaze/seal/tree/main/.seal
This is just because definition files don't support doc comments yet (for hovers w/ luau-lsp)
