Comment by stanac

Not really, you should learn Typescript by learning JavaScript first. Then consider learning C#. Or if you want to focus on the back end side learn C# and skip TS/JS.

They are created by the same person but they are very different in my opinion.

TypeScript is "a tool" for JS, it is possible to compile without errors but still fail in runtime (e.g. wrong object type returned from API), on the other hand parsing JSON with C# will give you correct object type, it may fail if some properties are missing but it will fail at parsing call, not further down when you try to use missing property. In other words typing is not glued on top of the language it's core of the language.