It seems from here that Uber has no resources to maintain this library [0]. I hate to speculate that this could be related to their recent layoffs.

They are actively open to looking for maintainers though.

[0] https://github.com/uber/react-vis/issues/1303#issuecomment-6...

Sadly this library has been mostly abandoned since approximately a year ago. The idea was good but relied a bit too much on manual props passing, and could have used a revision 2. I suspect that is what the library they will be releasing later this year will be.