Why is this react-aria-components tanstack/table demo slow

[rostero1]

Devon put together a nice example of combining TanStack Table with react-aria-components. Without the tanstack integration, the arrow keys are very fast. They seem very slow with the integration and I can't figure out why.

https://codesandbox.io/p/sandbox/blissful-dubinsky-upkz00?file=%2Fsrc%2FApp.tsx

[greg-hoarau]

Hi,

I've also noticed that the arrow keys are slow when using TanStack Table with React Aria Components. I've tried updating all dependencies during my test, but the issue persists. Would love to know if anyone knows what's happening. I can provide an updated version if necessary.

It'd also be great to have a guide on this integration in the docs.

Thanks 🙏

[iamrakhmatov]

Hey, did anyone found the reason?

[dnaploszek]

I think it's due to the fact that react-aria uses javascript to store focus and hover states. If you inspect rerenders, the whole table rerenders as you use arrow keys. On hover it "just" rerenders the hovered cells even though in most cases this is just useless. We had some issues with the react-aria table and decided to move out until we notice that there're performance improvements in place. However it might not be as easy as it sounds.