I'd be hard pressed to say ADTs are first class citizens in Typescript. If anything, seems more like a hack over some interface primitives to me. I miss having

I'd be hard pressed to say ADTs are first class citizens in Typescript. If anything, seems more like a hack over some interface primitives to me. I miss having a solid advanced type system like in Haskell when using something like Typescript or Dart. Typescript feels mostly like Microsoft's attempt on converting Javascript to align more with C# to me.