Remove state queue from useSyncExternalStore #22265
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Comparing: 06f98c1...220d6df Critical size changesIncludes critical production bundles, as well as any change greater than 2%:
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rickhanlonii
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| if (!didWarnUncachedGetSnapshot) { | ||
| if (nextSnapshot !== getSnapshot()) { | ||
| console.error( | ||
| 'The result of getSnapshot should be cached to avoid an infinite loop', |
The userspace shim of useSyncExternalStore uses a useState hook because it's the only way to trigger a re-render. We don't actually use the queue to store anything, because we read the current value directly from the store. In the native implementation, we can schedule an update on the fiber directly, without the overhead of a queue.
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Not yet, going to add when I implement this: react/packages/react-reconciler/src/ReactFiberHooks.new.js Lines 1332 to 1333 in 220d6df |
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Summary: This sync includes the following changes: - **[95d762e40](facebook/react@95d762e40 )**: Remove duplicate test //<Andrew Clark>// - **[d4d1dc085](facebook/react@d4d1dc085 )**: Reorder VARIANT feature flags ([#22266](facebook/react#22266)) //<Dan Abramov>// - **[2f156eafb](facebook/react@2f156eafb )**: Adjust consoleManagedByDevToolsDuringStrictMode feature flag ([#22253](facebook/react#22253)) //<Dan Abramov>// - **[cfd819332](facebook/react@cfd819332 )**: Add useSyncExternalStore to react-debug-tools ([#22240](facebook/react#22240)) //<Andrew Clark>// - **[8e80592a3](facebook/react@8e80592a3 )**: Remove state queue from useSyncExternalStore ([#22265](facebook/react#22265)) //<Andrew Clark>// - **[06f98c168](facebook/react@06f98c168 )**: Implement useSyncExternalStore in Fiber ([#22239](facebook/react#22239)) //<Andrew Clark>// - **[77912d9a0](facebook/react@77912d9a0 )**: Wire up the native API for useSyncExternalStore ([#22237](facebook/react#22237)) //<Andrew Clark>// - **[031abd24b](facebook/react@031abd24b )**: Add warning and test for useSyncExternalStore when getSnapshot isn't cached ([#22262](facebook/react#22262)) //<salazarm>// - **[b8884de24](facebook/react@b8884de24 )**: break up import keyword to avoid being accidentally parsed as dynamic import statement in external code ([#21918](facebook/react#21918)) //<Jianhua Zheng>// - **[6d6bba5bf](facebook/react@6d6bba5bf )**: Fix typo in ReactUpdatePriority-test.js ([#21958](facebook/react#21958)) //<Ikko Ashimine>// - **[0c0d1ddae](facebook/react@0c0d1ddae )**: feat(eslint-plugin-react-hooks): support ESLint 8.x ([#22248](facebook/react#22248)) //<Michaël De Boey>// - **[1314299c7](facebook/react@1314299c7 )**: Initial shim of useSyncExternalStore ([#22211](facebook/react#22211)) //<Andrew Clark>// - **[fc40f02ad](facebook/react@fc40f02ad )**: Add consoleManagedByDevToolsDuringStrictMode feature flag in React Reconciler ([#22196](facebook/react#22196)) //<Luna Ruan>// - **[46a0f050a](facebook/react@46a0f050a )**: Set up use-sync-external-store package ([#22202](facebook/react#22202)) //<Andrew Clark>// - **[8723e772b](facebook/react@8723e772b )**: Fix a string interpolation typo in ReactHooks test ([#22174](facebook/react#22174)) //<Matt Hargett>// - **[60a30cf32](facebook/react@60a30cf32 )**: Console Logging for StrictMode Double Rendering ([#22030](facebook/react#22030)) //<Luna Ruan>// - **[76bbad3e3](facebook/react@76bbad3e3 )**: Add maxYieldMs feature flag in Scheduler ([#22165](facebook/react#22165)) //<Ricky>// - **[b0b53ae2c](facebook/react@b0b53ae2c )**: Add feature flags for scheduler experiments ([#22105](facebook/react#22105)) //<Ricky>// Changelog: [General][Changed] - React Native sync for revisions bd5bf55...95d762e jest_e2e[run_all_tests] Reviewed By: mdvacca Differential Revision: D30809906 fbshipit-source-id: 131cfdf91e15f67fa59a5d925467e538ee89fe10
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The userspace shim of useSyncExternalStore uses a useState hook because it's the only way to trigger a re-render. We don't actually use the queue to store anything, because we read the current value directly from the store. In the native implementation, we can schedule an update on the fiber directly, without the overhead of a queue.
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Based on #22239
The userspace shim of useSyncExternalStore uses a useState hook because it's the only way to trigger a re-render. We don't actually use the queue to store anything, because we read the current value directly from the store.
In the native implementation, we can schedule an update on the fiber directly, without the overhead of a queue.