Consistent export of types (e.g. ZoomState)

[fl0711]

Hi everyone,

I am using @visx/zoom and want to split a component into several subcomponents. However I am struggling with the type annotations in my subcomponents.
The type that I can't find the import path of, or that isn't exported, is ZoomState (the type of the zoom object seems to be ProvidedZoom<SVGSVGElement> & ZoomState)
I also had to check this issue #1693 to figure out that I had to import { ProvidedZoom, TransformMatrix } from '@visx/zoom/lib/types' (instead of '@visx/zoom') (Which I could have seen in my IDE as well...)

Do I have to define ZoomState myself? Or is there a type export systematic that I fail to see?
I am generally struggling with this in Typescript, because I have the feeling that every framework has its own way of handling this..

Thank you in advance!

Flo