[HOLD for payment 2024-07-22] LOW: Enable Concurrent React Features

[roryabraham]

Problem

There are a number of performance issues that we have long-term aspirations to solve via the React concurrency features introduced in React 18+. This was a big portion of the motivation to enable the new React Native architecture.

While we are still working on the New Arch on iOS and Android, we already have the ability to enable React concurrent mode on web. However, during the RNW 0.19 upgrade, it was found that some aspects of our codebase, particularly withOnyx, are not compatible with concurrent mode, so we turned it off.

Solution

Let's investigate what it will take to re-enable React Concurrent Mode and start working on that in parallel to the New Arch upgrade, which is well over a year in the making and should land hopefully by the end of January.

Issue Owner

Current Issue Owner: @muttmuure

[melvin-bot]

Triggered auto assignment to @anmurali (NewFeature), see https://stackoverflowteams.com/c/expensify/questions/14418#:~:text=BugZero%20process%20steps%20for%20feature%20requests for more details.

[roryabraham]

Reassigning to @muttmuure for tracking as part of the NewDot Performance project

[roryabraham]

Put out a call for volunteers: https://expensify.slack.com/archives/C05LX9D6E07/p1703292300758289

[roryabraham]

Still looking for a volunteer, but I assume the people I tagged in slack may be partially OOO. This will remain on HOLD for this week, so I'll bump next week if I haven't heard anything