The solution is to pile features onto typescript that were never intended to be there, the same way we have done with Javascript, HTML, CSS, and HTTP. None of these things are pure, and all of them have been ravaged by competing interests and committees who were all making financially driven decisions when writing the standards.

It would be best to abandon javascript and typescript as backend languages. I don't mind them on the frontend because a typescript compiler is useful when the application you're writing is originating data and not receiving it. And javascript does DOM manipulation admirably. However, we live in a world where humans are more expensive than computers. If I had my way, we'd write C# backends and Angular/Typescript frontends, but that's not the world we live in. Everything has to be JS because most people employed as "software engineers" are not truly very good at their jobs