Care to give an example? In another reply I pointed out how advanced JSDoc syntax's support for generics is.[0] Even allowing for `extends` and default values for generic slots.

The clunkiest part is in the way you "pass in" a generic to a slot. But this is solved by typing the return type.

I use generics pretty extensively and I've not yet come across a use-case JSDoc couldn't handle

[0] https://news.ycombinator.com/item?id=46267810