Teal brings static typing to Lua without sacrificing its minimalism

Teal – A statically-typed dialect of Lua

Teal is a statically-typed dialect of Lua that adds type annotations, arrays, maps, records, interfaces, union types, and generics. It aims to fill a niche similar to TypeScript in the JavaScript world, but stays true to Lua's spirit of minimalism, portability, and embeddability. The compiler, tl, turns .tl source into .lua files, and the project is written in Teal itself.