alt Hacker NewsJSDoc is missing a lot of basic capabilities. For example a TypeDef is automatically exported which can cause collisions and forces you to repeat or inline types.
Types for classes are poor and often you'll find yourself creating a `.d.ts` file or `.ts` file to export non trivial types - however the target file doesn't know how to consume them.
typedefs are indeed automatically exported but that doesn't mean collisions can happen. You would still have to explicitly import a type
Regardless, I hardly consider that a "missing basic capability"
I don't know what you mean about types for classes being "poor". Types for classes work exactly the same way