allow to specify the type of ref returned by useFocusable

[zemlanin]

• Originally, I've tried E extends HTMLElement = HTMLElement, but that made the new type arg effectively required because of Type 'RefObject<HTMLElement>' is not assignable to type 'Ref<HTMLDivElement>'.
• src/App.tsx should passes type check without changes in this PR, but adding the new type arg seemed like a correct thing to do in the example

[xavi160]

Hi, thank you for the PR.
I’m wondering whether this change is actually necessary or if it’s solving a real issue.
My main concern with the proposed approach is that it doesn’t support react-native, where HTMLElements aren’t available at all.

[zemlanin]

I’m wondering whether this change is actually necessary or if it’s solving a real issue.

We’re trying to eliminate as much any from our code base as possible, and using a type arg seems like a clean way of doing that from the caller side

My main concern with the proposed approach is that it doesn’t support react-native, where HTMLElements aren’t available at all.

Riiight. Removing extends HTMLElement would solve that concern, wouldn’t it?

(I don’t know if there’s an another approach of typing things like that in a way that would work in both react-dom and react-native)

[xavi160]

Riiight. Removing extends HTMLElement would solve that concern, wouldn’t it?

Yep. Just adding the generic type and defaulting it to any should do the trick for you

[zemlanin]

Yep. Just adding the generic type and defaulting it to any should do the trick for you

32bc04f + 9dcbf26