There a few points in favor of TS types in jsdoc (in order):

1. not having to type everything (many types are not helpful)

2. makes code less dense (and they can be rendered in HTML) https://x.com/efortis/status/1989776568676221137

3. not needing a compiler (browsers don't support TS)

I think the main jsdoc caveat is around private types.

About 1, IDK if there’s a way to set up TS for that.