Remove warning for dangling passive effects #22609
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Comparing: d5b6b4b...975c75c Critical size changesIncludes critical production bundles, as well as any change greater than 2%:
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In legacy mode, a test can get into a situation where passive effects are "dangling" — an update finished, and scheduled some passive effects, but the effects don't flush. This is why React warns if you don't wrap updates in act. The act API is responsible for flushing passive effects. But there are some cases where the act API (in legacy roots) intentionally doesn't warn, like updates that originate from roots and classes. It's possible those updates will render children that contain useEffect. Because of this, dangling effects are still possible, and React doesn't warn about it. So we implemented a second act warning for dangling effects. However, in concurrent roots, we now enforce that all APIs that schedule React work must be wrapped in act. There's no scenario where dangling passive effects can happen that doesn't already trigger the warning for updates. So the dangling effects warning is redundant. The warning was never part of a public release. It was only enabled in concurrent roots. So we can delete it.
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Summary: This sync includes the following changes: - **[5cccacd13](facebook/react@5cccacd13 )**: Upgrade useId to alpha channel ([#22674](facebook/react#22674)) //<Andrew Clark>// - **[75f3ddebf](facebook/react@75f3ddebf )**: Remove experimental useOpaqueIdentifier API ([#22672](facebook/react#22672)) //<Andrew Clark>// - **[8c4a05b8f](facebook/react@8c4a05b8f )**: Remove flow pragma comment from module registration start/stop templates ([#22670](facebook/react#22670)) //<Brian Vaughn>// - **[ebf9ae857](facebook/react@ebf9ae857 )**: useId ([#22644](facebook/react#22644)) //<Andrew Clark>// - **[a0d991fe6](facebook/react@a0d991fe6 )**: Re-land #22292 (remove uMS from open source build) ([#22664](facebook/react#22664)) //<Andrew Clark>// - **[6bce0355c](facebook/react@6bce0355c )**: Upgrade useSyncExternalStore to alpha channel ([#22662](facebook/react#22662)) //<Andrew Clark>// - **[7034408ff](facebook/react@7034408ff )**: Follow-up improvements to error code extraction infra ([#22516](facebook/react#22516)) //<Andrew Clark>// - **[90e5d3638](facebook/react@90e5d3638 )**: chore: fix comment typo ([#22615](facebook/react#22615)) //<btea>// - **[3c4c1c470](facebook/react@3c4c1c470 )**: Remove warning for dangling passive effects ([#22609](facebook/react#22609)) //<Andrew Clark>// - **[d5b6b4b86](facebook/react@d5b6b4b86 )**: Expand act warning to cover all APIs that might schedule React work ([#22607](facebook/react#22607)) //<Andrew Clark>// - **[fa9bea0c4](facebook/react@fa9bea0c4 )**: Initial implementation of cache cleanup ([#22510](facebook/react#22510)) //<Joseph Savona>// - **[0e8a5aff3](facebook/react@0e8a5aff3 )**: Scheduling Profiler: Add marks for component effects (mount and unmount) ([#22578](facebook/react#22578)) //<Brian Vaughn>// - **[4ba20579d](facebook/react@4ba20579d )**: Scheduling Profiler: De-emphasize React internal frames ([#22588](facebook/react#22588)) //<Brian Vaughn>// - **[cdb8a1d19](facebook/react@cdb8a1d19 )**: [Fizz] Add option to inject bootstrapping script tags after the shell is injected ([#22594](facebook/react#22594)) //<Sebastian Markbåge>// - **[34e4c9756](facebook/react@34e4c9756 )**: Clear extra nodes if there's a hydration mismatch within a suspense boundary ([#22592](facebook/react#22592)) //<Sebastian Markbåge>// - **[02f411578](facebook/react@02f411578 )**: Upgrade useInsertionEffect to stable ([#22589](facebook/react#22589)) //<Andrew Clark>// - **[2af4a7933](facebook/react@2af4a7933 )**: Hydrate using SuspenseComponent as the parent ([#22582](facebook/react#22582)) //<Sebastian Markbåge>// - **[b1acff0cc](facebook/react@b1acff0cc )**: Enable cache in test renderer ([#22580](facebook/react#22580)) //<Joseph Savona>// - **[996da67b2](facebook/react@996da67b2 )**: Replace global `jest` heuristic with `IS_REACT_ACT_ENVIRONMENT` ([#22562](facebook/react#22562)) //<Andrew Clark>// - **[163e81c1f](facebook/react@163e81c1f )**: Support disabling spurious act warnings with a global environment flag ([#22561](facebook/react#22561)) //<Andrew Clark>// - **[23b7dfeff](facebook/react@23b7dfeff )**: Enable scheduling profiler for RN FB profiling builds ([#22566](facebook/react#22566)) //<Brian Vaughn>// - **[61455a25b](facebook/react@61455a25b )**: Enable experimental Cache API in www TestRenderer ([#22554](facebook/react#22554)) //<Joseph Savona>// - **[7142d110b](facebook/react@7142d110b )**: Bugfix: Nested useOpaqueIdentifier references ([#22553](facebook/react#22553)) //<Andrew Clark>// - **[1e247ff89](facebook/react@1e247ff89 )**: Enabled scheduling profiler marks for React Native FB target ([#22544](facebook/react#22544)) //<Brian Vaughn>// - **[c16b005f2](facebook/react@c16b005f2 )**: Update test and stack frame code to support newer V8 stack formats ([#22477](facebook/react#22477)) //<Brian Vaughn>// - **[55d75005b](facebook/react@55d75005b )**: duplicate value in variable ([#22390](facebook/react#22390)) //<BIKI DAS>// Changelog: [General][Changed] - React Native sync for revisions afcb9cd...3fcd81d jest_e2e[run_all_tests] Reviewed By: yungsters Differential Revision: D32065987 fbshipit-source-id: ef2d402835c981aab68ca40a894c66c1630864e9
KamranAsif
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In legacy mode, a test can get into a situation where passive effects are "dangling" — an update finished, and scheduled some passive effects, but the effects don't flush. This is why React warns if you don't wrap updates in act. The act API is responsible for flushing passive effects. But there are some cases where the act API (in legacy roots) intentionally doesn't warn, like updates that originate from roots and classes. It's possible those updates will render children that contain useEffect. Because of this, dangling effects are still possible, and React doesn't warn about it. So we implemented a second act warning for dangling effects. However, in concurrent roots, we now enforce that all APIs that schedule React work must be wrapped in act. There's no scenario where dangling passive effects can happen that doesn't already trigger the warning for updates. So the dangling effects warning is redundant. The warning was never part of a public release. It was only enabled in concurrent roots. So we can delete it.
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Summary: This sync includes the following changes: - **[c0c71a868](facebook/react@c0c71a868 )**: Re-enable useMutableSource in internal RN ([#22750](facebook/react#22750)) //<Ricky>// - **[cb11155c8](facebook/react@cb11155c8 )**: Add runtime type checks around module boundary code ([#22748](facebook/react#22748)) //<Brian Vaughn>// - **[a04f13d29](facebook/react@a04f13d29 )**: [email protected] //<Dan Abramov>// - **[ff9897d23](facebook/react@ff9897d23 )**: [React Refresh] support typescript namespace syntax ([#22621](facebook/react#22621)) //<irinakk>// - **[0ddd69d12](facebook/react@0ddd69d12 )**: Throw on hydration mismatch and force client rendering if boundary hasn't suspended within concurrent root ([#22629](facebook/react#22629)) //<salazarm>// - **[c3f34e4be](facebook/react@c3f34e4be )**: [email protected] //<Dan Abramov>// - **[827021c4e](facebook/react@827021c4e )**: Changelog for [email protected] //<Dan Abramov>// - **[8ca3f567b](facebook/react@8ca3f567b )**: Fix module-boundary wrappers ([#22688](facebook/react#22688)) //<Brian Vaughn>// - **[1bf6deb86](facebook/react@1bf6deb86 )**: Renamed packages/react-devtools-scheduling-profiler to packages/react-devtools-timeline ([#22691](facebook/react#22691)) //<Brian Vaughn>// - **[51c558aeb](facebook/react@51c558aeb )**: Rename (some) "scheduling profiler" references to "timeline" ([#22690](facebook/react#22690)) //<Brian Vaughn>// - **[00ced1e2b](facebook/react@00ced1e2b )**: Fix useId in strict mode ([#22681](facebook/react#22681)) //<Andrew Clark>// - **[5cccacd13](facebook/react@5cccacd13 )**: Upgrade useId to alpha channel ([#22674](facebook/react#22674)) //<Andrew Clark>// - **[75f3ddebf](facebook/react@75f3ddebf )**: Remove experimental useOpaqueIdentifier API ([#22672](facebook/react#22672)) //<Andrew Clark>// - **[8c4a05b8f](facebook/react@8c4a05b8f )**: Remove flow pragma comment from module registration start/stop templates ([#22670](facebook/react#22670)) //<Brian Vaughn>// - **[ebf9ae857](facebook/react@ebf9ae857 )**: useId ([#22644](facebook/react#22644)) //<Andrew Clark>// - **[a0d991fe6](facebook/react@a0d991fe6 )**: Re-land #22292 (remove uMS from open source build) ([#22664](facebook/react#22664)) //<Andrew Clark>// - **[6bce0355c](facebook/react@6bce0355c )**: Upgrade useSyncExternalStore to alpha channel ([#22662](facebook/react#22662)) //<Andrew Clark>// - **[7034408ff](facebook/react@7034408ff )**: Follow-up improvements to error code extraction infra ([#22516](facebook/react#22516)) //<Andrew Clark>// - **[90e5d3638](facebook/react@90e5d3638 )**: chore: fix comment typo ([#22615](facebook/react#22615)) //<btea>// - **[3c4c1c470](facebook/react@3c4c1c470 )**: Remove warning for dangling passive effects ([#22609](facebook/react#22609)) //<Andrew Clark>// - **[d5b6b4b86](facebook/react@d5b6b4b86 )**: Expand act warning to cover all APIs that might schedule React work ([#22607](facebook/react#22607)) //<Andrew Clark>// - **[fa9bea0c4](facebook/react@fa9bea0c4 )**: Initial implementation of cache cleanup ([#22510](facebook/react#22510)) //<Joseph Savona>// - **[0e8a5aff3](facebook/react@0e8a5aff3 )**: Scheduling Profiler: Add marks for component effects (mount and unmount) ([#22578](facebook/react#22578)) //<Brian Vaughn>// - **[4ba20579d](facebook/react@4ba20579d )**: Scheduling Profiler: De-emphasize React internal frames ([#22588](facebook/react#22588)) //<Brian Vaughn>// - **[cdb8a1d19](facebook/react@cdb8a1d19 )**: [Fizz] Add option to inject bootstrapping script tags after the shell is injected ([#22594](facebook/react#22594)) //<Sebastian Markbåge>// - **[34e4c9756](facebook/react@34e4c9756 )**: Clear extra nodes if there's a hydration mismatch within a suspense boundary ([#22592](facebook/react#22592)) //<Sebastian Markbåge>// - **[02f411578](facebook/react@02f411578 )**: Upgrade useInsertionEffect to stable ([#22589](facebook/react#22589)) //<Andrew Clark>// - **[2af4a7933](facebook/react@2af4a7933 )**: Hydrate using SuspenseComponent as the parent ([#22582](facebook/react#22582)) //<Sebastian Markbåge>// - **[b1acff0cc](facebook/react@b1acff0cc )**: Enable cache in test renderer ([#22580](facebook/react#22580)) //<Joseph Savona>// - **[996da67b2](facebook/react@996da67b2 )**: Replace global `jest` heuristic with `IS_REACT_ACT_ENVIRONMENT` ([#22562](facebook/react#22562)) //<Andrew Clark>// - **[163e81c1f](facebook/react@163e81c1f )**: Support disabling spurious act warnings with a global environment flag ([#22561](facebook/react#22561)) //<Andrew Clark>// - **[23b7dfeff](facebook/react@23b7dfeff )**: Enable scheduling profiler for RN FB profiling builds ([#22566](facebook/react#22566)) //<Brian Vaughn>// - **[61455a25b](facebook/react@61455a25b )**: Enable experimental Cache API in www TestRenderer ([#22554](facebook/react#22554)) //<Joseph Savona>// - **[7142d110b](facebook/react@7142d110b )**: Bugfix: Nested useOpaqueIdentifier references ([#22553](facebook/react#22553)) //<Andrew Clark>// - **[1e247ff89](facebook/react@1e247ff89 )**: Enabled scheduling profiler marks for React Native FB target ([#22544](facebook/react#22544)) //<Brian Vaughn>// - **[c16b005f2](facebook/react@c16b005f2 )**: Update test and stack frame code to support newer V8 stack formats ([#22477](facebook/react#22477)) //<Brian Vaughn>// - **[55d75005b](facebook/react@55d75005b )**: duplicate value in variable ([#22390](facebook/react#22390)) //<BIKI DAS>// Changelog: [General][Changed] - React Native sync for revisions afcb9cd...c0c71a8 jest_e2e[run_all_tests] Reviewed By: yungsters Differential Revision: D32395873 fbshipit-source-id: 3afd158f167b1eedcc244e29aba1a2c502d3c9d9
zhengjitf
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Apr 15, 2022
In legacy mode, a test can get into a situation where passive effects are "dangling" — an update finished, and scheduled some passive effects, but the effects don't flush. This is why React warns if you don't wrap updates in act. The act API is responsible for flushing passive effects. But there are some cases where the act API (in legacy roots) intentionally doesn't warn, like updates that originate from roots and classes. It's possible those updates will render children that contain useEffect. Because of this, dangling effects are still possible, and React doesn't warn about it. So we implemented a second act warning for dangling effects. However, in concurrent roots, we now enforce that all APIs that schedule React work must be wrapped in act. There's no scenario where dangling passive effects can happen that doesn't already trigger the warning for updates. So the dangling effects warning is redundant. The warning was never part of a public release. It was only enabled in concurrent roots. So we can delete it.
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In legacy mode, a test can get into a situation where passive effects are "dangling" — an update finished, and scheduled some passive effects, but the effects don't flush.
This is why React warns if you don't wrap updates in act. The act API is responsible for flushing passive effects. But there are some cases where the act API (in legacy roots) intentionally doesn't warn, like updates that originate from roots and classes. It's possible those updates will render children that contain useEffect. Because of this, dangling effects are still possible, and React doesn't warn about it.
So we implemented a second act warning for dangling effects. The warning was never part of a public release. It was only enabled in concurrent roots.
However, in concurrent roots, we now enforce that all APIs that schedule React work must be wrapped in act. There's no scenario where dangling passive effects can happen that doesn't already trigger the warning for updates. So the dangling effects warning is redundant.
So we can delete it.