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[Transition Tracing] Push Transition When Offscreen Becomes Visible #24718

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Merged
lunaruan merged 2 commits into from
Jun 15, 2022
Merged

[Transition Tracing] Push Transition When Offscreen Becomes Visible #24718

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69b0ae7
add transitions to stack when Offscreen is visible
lunaruan Jun 14, 2022
7da489b
old
lunaruan Jun 14, 2022
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12 changes: 11 additions & 1 deletion packages/react-reconciler/src/ReactFiberBeginWork.new.js
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Original file line number Diff line number Diff line change
Expand Up @@ -779,7 +779,17 @@ function updateOffscreenComponent(
prevCachePool = prevState.cachePool;
}

pushTransition(workInProgress, prevCachePool, null);
let transitions = null;
if (
workInProgress.memoizedState !== null &&
workInProgress.memoizedState.transitions !== null
) {
// We have now gone from hidden to visible, so any transitions should
// be added to the stack to get added to any Offscreen/suspense children
transitions = workInProgress.memoizedState.transitions;
}

pushTransition(workInProgress, prevCachePool, transitions);

// Since we're not hidden anymore, reset the state
workInProgress.memoizedState = null;
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12 changes: 11 additions & 1 deletion packages/react-reconciler/src/ReactFiberBeginWork.old.js
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Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -779,7 +779,17 @@ function updateOffscreenComponent(
prevCachePool = prevState.cachePool;
}

pushTransition(workInProgress, prevCachePool, null);
let transitions = null;
if (
workInProgress.memoizedState !== null &&
workInProgress.memoizedState.transitions !== null
) {
// We have now gone from hidden to visible, so any transitions should
// be added to the stack to get added to any Offscreen/suspense children
transitions = workInProgress.memoizedState.transitions;
}

pushTransition(workInProgress, prevCachePool, transitions);

// Since we're not hidden anymore, reset the state
workInProgress.memoizedState = null;
Expand Down