[japhib]

If you just want static typing, you can write Typescript and compile to Lua: https://typescripttolua.github.io/

[anentropic]

The Defold site recommends:

> Optional typed Lua using Teal.

https://defold.com/product/

https://defold.com/assets/teal/

https://github.com/teal-language/tl

[britzl]

Also https://ts-defold.dev/