[fazouane-marouane]

Hi !

The issue of having custom scrollbars with react-virtualized is a pending issue #1275 .
It may be possible to do it today with Lists but it's kind of impossible/hacky to do it for Grid or MultiGrid (by subclassing Grid and using React.cloneElement for instance).
This PR solves this.

checklist:

• The existing test suites (npm test) all pass
• For any new features or bug fixes, both positive and negative test cases have been added
• For any new features, documentation has been added
• For any documentation changes, the text has been proofread and is clear to both experienced users and beginners.
• Format your code with prettier (yarn run prettier).
• Run the Flow typechecks (yarn run typecheck).

[fazouane-marouane]

Closing this as it hasn't been reviewed since its creation (9 months)

[bvaughn]

Sorry for the very long delay in getting back to you about this!

I've just finished a large update for version 10 of react-virtualized (#1900): the library has been rewritten in TypeScript, every component is now a function component (React 18+ is required), and the source moved from source/ to lib/. Because of that, this PR can't be merged as-is. Version 10's Grid and MultiGrid still don't support custom scrollbar components.

If you're still interested in this change, I'd welcome a new PR with it rebased onto the version-10 branch (or onto master once version 10 has been merged).