Luau is gradually typed and has intellisense support? That was my biggest gripe with Love2d, and a huge motivation for why I created the project I haven't yet released! Oh man, I have to check this out.
There is no support for Luau in Love2D though. You would have to author your code in Teal (typed lua to lua compiler) and then compile that to Lua to be run in Love: https://github.com/teal-language/tl
You can get the Lua LSP working in Love2D with full completion support by the way. The Lua LSP has 3rd party libraries included in it. You can see all the preinstalled ones here: https://github.com/LuaLS/lua-language-server/tree/master/3rd
Support for them as built-ins will be removed at some point though. But you can always add them yourself: https://github.com/LuaLS/lua-language-server/wiki/Settings#w... using the files from here: https://github.com/LuaCATS/love2d/
It looks like the easiest way to support them is using a `.luarc.json` file though: https://github.com/LuaLS/lua-language-server/wiki/Configurat...
Here is a project that is already set up with a config file that you should be able to just copy: https://github.com/jonasgeiler/love2d-joystick-tester/blob/m...