mirror of
https://github.com/zebrajr/react.git
synced 2026-01-15 12:15:22 +00:00
Fixes https://github.com/facebook/react/issues/26793.
I have received a constantly reproducible example of the error, that is
mentioned in the issue above.
When starting `Reload and Profile` in DevTools, React reports an unmount
of a functional component inside Suspense's fallback via
[`onCommitFiberUnmount`](3ff846d106/packages/react-devtools-shared/src/hook.js (L408-L413))
in
[`commitDeletionEffectsOnFiber`](https://github.com/facebook/react/blob/main/packages/react-reconciler/src/ReactFiberCommitWork.js#L2025),
but this fiber was never registered as mounted in DevTools.
While debugging, I've noticed that in timed-out case for Suspense trees
we only check if both previous fallback child set and next fiber
fallback child set are non-null, but in these recursive calls there is
also a case when previous fallback child set is null and next set is
non-null, so we were skipping the branch.
<img width="1746" alt="Screenshot 2023-07-25 at 15 26 07"
src="https://github.com/facebook/react/assets/28902667/da21a682-9973-43ec-9653-254ba98a0a3f">
After these changes, the issue is no longer reproducible, but I am not
sure if this is the right solution, since I don't know if this case is
correct from reconciler perspective.
This directory contains code shared between several DevTools packages:
- /packages/react-devtools-core
- /packages/react-devtools-extensions
- /packages/react-devtools-inline
It is not published or released anywhere directly.