On the .Net VM you’re describing F#, mostly by virtue of being based on OCaml.

Contrasted with TypeScript and C#, F# is smaller, more expressive, stricter, with mature pattern matching and type resolution baked in from the ground up. F# was years ahead of the major languages on what are increasingly looking like ‘the basics’ around ADTs and immutability in modern distributed computing. OCaml and F# capture the linguistic high points of VB, Delphi, and C# with a broad spectrum of OOP(-lite) approaches, and have led those languages by decades on functional constructs that result in meaningfully tighter code. With the benefit of hindsight some approaches clearly map better to cloud computing and system verification.

F# also sits parallel to lots of living C#, objectively we see ‘less is more’. Less code per line, fewer lines per solution, terser and more LLM-efficient language. Error rates and refactoring costs are also meaningfully better IME, but harder to quantify in general terms.

It’s a great language. I just wish its compilation speed matched that of OCaml.