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Fix suspense fallback throttling #24253
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Comparing: e0160d5...8bd48ca Critical size changesIncludes critical production bundles, as well as any change greater than 2%:
Significant size changesIncludes any change greater than 0.2%: (No significant changes) |
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It would be nice to add some test that passes in this branch but fails on main. |
Nice fix! I can work on adding a test unless you beat me to it |
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Looks good to me. Leaving for @acdlite to do a final review & merge
@sunderls Thank you so much for finding this and sending a fix! Really nice work. |
Very impressive PR! Thanks for the fix! |
* fix suspense throttling * fix lint * Tweak tests + another test Co-authored-by: Dan Abramov <dan.abramov@gmail.com>
* fix suspense throttling * fix lint * Tweak tests + another test Co-authored-by: Dan Abramov <dan.abramov@gmail.com>
* fix suspense throttling * fix lint * Tweak tests + another test Co-authored-by: Dan Abramov <dan.abramov@gmail.com>
* fix suspense throttling * fix lint * Tweak tests + another test Co-authored-by: Dan Abramov <dan.abramov@gmail.com>
Summary: This sync includes the following changes: - **[bd4784c8f](facebook/react@bd4784c8f )**: Revert #24236 (Don't recreate the same fallback on the client if hydrating suspends) ([#24434](facebook/react#24434)) //<dan>// - **[6d3b6d0f4](facebook/react@6d3b6d0f4 )**: forwardRef et al shouldn't affect if props reused ([#24421](facebook/react#24421)) //<Andrew Clark>// - **[bd0813766](facebook/react@bd0813766 )**: Fix: useDeferredValue should reuse previous value ([#24413](facebook/react#24413)) //<Andrew Clark>// - **[9ae80d6a2](facebook/react@9ae80d6a2 )**: Suppress hydration warnings when a preceding sibling suspends ([#24404](facebook/react#24404)) //<Josh Story>// - **[0dc4e6663](facebook/react@0dc4e6663 )**: Land enableClientRenderFallbackOnHydrationMismatch ([#24410](facebook/react#24410)) //<Andrew Clark>// - **[354772952](facebook/react@354772952 )**: Land enableSelectiveHydration flag ([#24406](facebook/react#24406)) //<Andrew Clark>// - **[392808a1f](facebook/react@392808a1f )**: Land enableClientRenderFallbackOnTextMismatch flag ([#24405](facebook/react#24405)) //<Andrew Clark>// - **[1e748b452](facebook/react@1e748b452 )**: Land enableLazyElements flag ([#24407](facebook/react#24407)) //<Andrew Clark>// - **[4175f0593](facebook/react@4175f0593 )**: Temporarily feature flag numeric fallback for symbols ([#24401](facebook/react#24401)) //<Ricky>// - **[a6d53f346](facebook/react@a6d53f346 )**: Revert "Clean up Selective Hydration / Event Replay flag ([#24156](facebook/react#24156))" ([#24402](facebook/react#24402)) //<Ricky>// - **[ab9cdd34f](facebook/react@ab9cdd34f )**: Bugfix: In legacy mode, call suspended tree's unmount effects when it is deleted ([#24400](facebook/react#24400)) //<Andrew Clark>// - **[168da8d55](facebook/react@168da8d55 )**: Fix typo that happened during rebasing //<Andrew Clark>// - **[8bc527a4c](facebook/react@8bc527a4c )**: Bugfix: Fix race condition between interleaved and non-interleaved updates ([#24353](facebook/react#24353)) //<Andrew Clark>// - **[f7cf077cc](facebook/react@f7cf077cc )**: [Transition Tracing] Add Offscreen Queue ([#24341](facebook/react#24341)) //<Luna Ruan>// - **[4fc394bbe](facebook/react@4fc394bbe )**: Fix suspense fallback throttling ([#24253](facebook/react#24253)) //<sunderls>// - **[80170a068](facebook/react@80170a068 )**: Match bundle.name and match upper case entry points ([#24346](facebook/react#24346)) //<Sebastian Markbåge>// - **[fea6f8da6](facebook/react@fea6f8da6 )**: [Transition Tracing] Add transition to OffscreenState and pendingSuspenseBoundaries to RootState ([#24340](facebook/react#24340)) //<Luna Ruan>// - **[8e2f9b086](facebook/react@8e2f9b086 )**: move passive flag ([#24339](facebook/react#24339)) //<Luna Ruan>// - **[55a21ef7e](facebook/react@55a21ef7e )**: fix pushTransition for transition tracing ([#24338](facebook/react#24338)) //<Luna Ruan>// - **[069d23bb7](facebook/react@069d23bb7 )**: [eslint-plugin-exhaustive-deps] Fix exhaustive deps check for unstable vars ([#24343](facebook/react#24343)) //<Afzal Sayed>// - **[4997515b9](facebook/react@4997515b9 )**: Point useSubscription to useSyncExternalStore shim ([#24289](facebook/react#24289)) //<dan>// - **[01e2bff1d](facebook/react@01e2bff1d )**: Remove unnecessary check ([#24332](facebook/react#24332)) //<zhoulixiang>// - **[d9a0f9e20](facebook/react@d9a0f9e20 )**: Delete create-subscription folder ([#24288](facebook/react#24288)) //<dan>// - **[f993ffc51](facebook/react@f993ffc51 )**: Fix infinite update loop that happens when an unmemoized value is passed to useDeferredValue ([#24247](facebook/react#24247)) //<Andrew Clark>// - **[fa5800226](facebook/react@fa5800226 )**: [Fizz] Pipeable Stream Perf ([#24291](facebook/react#24291)) //<Josh Story>// - **[0568c0f8c](facebook/react@0568c0f8c )**: Replace zero with NoLanes for consistency in FiberLane ([#24327](facebook/react#24327)) //<Leo>// - **[e0160d50c](facebook/react@e0160d50c )**: add transition tracing transitions stack ([#24321](facebook/react#24321)) //<Luna Ruan>// - **[b0f13e5d3](facebook/react@b0f13e5d3 )**: add pendingPassiveTransitions ([#24320](facebook/react#24320)) //<Luna Ruan>// Changelog: [General][Changed] - React Native sync for revisions 60e63b9...bd4784c jest_e2e[run_all_tests] Reviewed By: kacieb Differential Revision: D35899012 fbshipit-source-id: 86a885e336fca9f0efa80cd2b8ca040f2cb53853
Summary
There seems to be a regression on suspense throttling.
in React 18-alpha version, Suspense fallbacks are throttled in committing codesandbox link
in React 18 release version, this is no longer working codesandbox link
Root cause
see the inline comments
How did you test this change?
Apr-02-2022.00-24-42.mp4
Apr-02-2022.00-25-25.mp4
Test
Added one more test case in
ReactSuspense-test.internal.js
, to mimic the repro in above videoson
main
branch it failsin this patch, it passes