React 18

[j-m]

Could we get an estimate for the React 18 upgrade, please?

[chandlerprall]

We do not have this explored at the moment; we're aware of some areas that EUI would need to account for such as the updated children type on React.FC going away, and there's open questions about the concurrent rending mode. It was hoped that supporting v17 would be enough to bridge the gap into v18 but it's become more apparent that EUI can't be dropped right into that environment.

The team is heavily focused on the emotion conversion at the moment and unable to take this exploration for the time being. If anyone (👋) has thoughts to share please feel free to add them to this thread!

[j-m]

You hinted at it there, but it appears many libraries are tackling the upgrade in two phases:
run the migration script (and fix any further issues - which there don't seem to be many of) to unblock consumers then add concurrency later. There's no obligation to use React 18's new features immediately - if ever

[chandlerprall]

I've opened a meta/tracking issue (#6182) to better track issues related to EUI+React 18, closing this one.