Tsuki
Tsuki is a statically-typed, functional and type-inferred scripting language that compiles to Luau. It's fast, simple and safe thanks to the Rust programming language. Tsuki aims to be a better version of Luau by removing the already mininal object-oriented syntax in it and also making it a more typed language.
Integration with 
Tsuki can be integrated to Roblox Studio by using Rojo, a bridge which connects Visual Studio Code to Roblox Studio, by compiling your code into Luau inside the Rojo input folders. For a even better experience, you can use the Tsuki LSP.