All the TypeScript fervor kind of passes me by because I simply don't want to structure my work around classes and 'ideal TypeScript' that I've seen looks a lot like Java or another class-oriented language.
Typescript is still extremely useful even if you are writing more functional code. There is no "ideal Typescript", TS is still ES underneath and just about all the ES paradigms including high functional code are still available in TS and benefit from typing information. (The possible exception being that TS is not entirely great at some of the more complex prototype-oriented paradigms, but even that has gotten significantly better in TS >= 1.8 with support for things like intersection types.)
