I really haven't invested heavily in understanding new tooling, but I did try to move to TS 7.0 and found that a lot of the tooling actually relies on parsing

I really haven't invested heavily in understanding new tooling, but I did try to move to TS 7.0 and found that a lot of the tooling actually relies on parsing TS not just stripping the types. And the only tool that can do that reliably is `tsc`. I even had to revert from TS 7.0 (the go rewrite) to 6, because 7 doesn't support plugins and code analysis stuff (which I guess are js) in the way the tooling requires.