Just came across this interesting project; Typescript support for Flutter.
The developer is working on creating bindings for Flutter to support Typescript and several other languages through Lua it seems, and there are plans to support Haxe too for creating Flutter apps.
- [✓] Typescript
GitHub - TypeScriptToLua/TypeScriptToLua: Typescript to lua transpiler. https://typescripttolua.github.io/
GitHub - HaxeFoundation/haxe: Haxe - The Cross-Platform Toolkit
GitHub - yanghuan/CSharp.lua: The C# to Lua compiler
There is potensial here i think, check it out!