[Offscreen] Mount/unmount layout effects #21386
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| // @gate experimental | ||
| // @gate enableSuspenseLayoutEffectSemantics | ||
| it('mounts without layout effects', async () => { |
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| it('mounts without layout effects', async () => { | |
| it('mounts without layout effects when hidden', async () => { |
Exposes the Offscreen component type and implements basic support for mount/unmounting layout effects when the visibility is toggled. Mostly it works the same way as hidden Suspense trees, which use the same internal fiber type. I had to add an extra bailout, though, that doesn't apply to the Suspense case but does apply to Offscreen components: a hidden Offscreen tree will eventually render at low priority, and when we it does, its `subtreeTag` will have effects scheduled on it. So I added a check to the layout phase where, if the subtree is hidden, we skip over the subtree entirely. An alternate design would be to clear the subtree flags in the render phase, but I prefer doing it this way since it's harder to mess up. We also need an API to enable the same thing for passive effects. This is not yet implemented.
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Summary: - **[0eea57724](facebook/react@0eea57724 )**: Fix typo in comment (accumlated → accumulated) ([#21637](facebook/react#21637)) //<ithinker5>// - **[0706162ba](facebook/react@0706162ba )**: Fix typo in comment (environement → environment) ([#21635](facebook/react#21635)) //<niexq>// - **[9d17b562b](facebook/react@9d17b562b )**: Fix typo in comment (satsify → satisfy) ([#21629](facebook/react#21629)) //<niexq>// - **[b610fec00](facebook/react@b610fec00 )**: fix comments: expiration time -> lanes ([#21551](facebook/react#21551)) //<Shannon Feng>// - **[cc4d24ab0](facebook/react@cc4d24ab0 )**: [Fizz] Always call flush() if it exists ([#21625](facebook/react#21625)) //<Dan Abramov>// - **[e0d9b2899](facebook/react@e0d9b2899 )**: [Fizz] Minor Fixes for Warning Parity ([#21618](facebook/react#21618)) //<Sebastian Markbåge>// - **[1b7b3592f](facebook/react@1b7b3592f )**: [Fizz] Implement Component Stacks in DEV for warnings ([#21610](facebook/react#21610)) //<Sebastian Markbåge>// - **[39f007489](facebook/react@39f007489 )**: Make enableSuspenseLayoutEffectSemantics static for www ([#21617](facebook/react#21617)) //<Brian Vaughn>// - **[8f3794276](facebook/react@8f3794276 )**: Prepare semver (`latest`) releases in CI ([#21615](facebook/react#21615)) //<Andrew Clark>// - **[8b4201535](facebook/react@8b4201535 )**: Devtools: add feature to trigger an error boundary ([#21583](facebook/react#21583)) //<Bao Pham>// - **[154a8cf32](facebook/react@154a8cf32 )**: Fix reference to wrong variable //<Andrew Clark>// - **[6736a38b9](facebook/react@6736a38b9 )**: Add single source of truth for package versions ([#21608](facebook/react#21608)) //<Andrew Clark>// - **[86715efa2](facebook/react@86715efa2 )**: Resolve the true entry point during tests ([#21505](facebook/react#21505)) //<Sebastian Markbåge>// - **[a8a4742f1](facebook/react@a8a4742f1 )**: Convert ES6/TypeScript/CoffeeScript Tests to createRoot + act ([#21598](facebook/react#21598)) //<Sebastian Markbåge>// - **[1d3558965](facebook/react@1d3558965 )**: Disable deferRenderPhaseUpdateToNextBatch by default ([#21605](facebook/react#21605)) //<Sebastian Markbåge>// - **[a8964649b](facebook/react@a8964649b )**: Delete an unused field ([#21415](facebook/react#21415)) //<okmttdhr>// - **[76f85b3e5](facebook/react@76f85b3e5 )**: Expose Fizz in stable builds ([#21602](facebook/react#21602)) //<Dan Abramov>// - **[e16d61c30](facebook/react@e16d61c30 )**: [Offscreen] Mount/unmount layout effects ([#21386](facebook/react#21386)) //<Andrew Clark>// - **[63091939b](facebook/react@63091939b )**: OSS feature flag updates ([#21597](facebook/react#21597)) //<Brian Vaughn>// - **[efbd69b27](facebook/react@efbd69b27 )**: Define global __WWW__ = true flag during www tests ([#21504](facebook/react#21504)) //<Sebastian Markbåge>// - **[28625c6f4](facebook/react@28625c6f4 )**: Disable strict effects for legacy roots (again) ([#21591](facebook/react#21591)) //<Brian Vaughn>// - **[3c2341416](facebook/react@3c2341416 )**: Update jest to v26 ([#21574](facebook/react#21574)) //<Sebastian Silbermann>// - **[0d493dcda](facebook/react@0d493dcda )**: Removed _debugID field from Fiber - Issue #21558 ([#21570](facebook/react#21570)) //<Pulkit Sharma>// - **[7841d0695](facebook/react@7841d0695 )**: Enable the updater-tracking feature flag in more builds ([#21567](facebook/react#21567)) //<Brian Vaughn>// - **[6405efc36](facebook/react@6405efc36 )**: Enabled Profiling feature flags for OSS release ([#21565](facebook/react#21565)) //<Brian Vaughn>// Changelog: [General][Changed] - React Native sync for revisions 2d8d133...0eea577 jest_e2e[run_all_tests] Reviewed By: bvaughn Differential Revision: D28932083 fbshipit-source-id: 012c1bfb857ed59d7283334d633f1cce8ec50360
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* [Offscreen] Mount/unmount layout effects Exposes the Offscreen component type and implements basic support for mount/unmounting layout effects when the visibility is toggled. Mostly it works the same way as hidden Suspense trees, which use the same internal fiber type. I had to add an extra bailout, though, that doesn't apply to the Suspense case but does apply to Offscreen components: a hidden Offscreen tree will eventually render at low priority, and when we it does, its `subtreeTag` will have effects scheduled on it. So I added a check to the layout phase where, if the subtree is hidden, we skip over the subtree entirely. An alternate design would be to clear the subtree flags in the render phase, but I prefer doing it this way since it's harder to mess up. We also need an API to enable the same thing for passive effects. This is not yet implemented. * Add test starting from hidden Co-authored-by: Rick Hanlon <[email protected]>
This was referenced Jun 16, 2021
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Exposes the Offscreen component type and implements basic support for mount/unmounting layout effects when the visibility is toggled.
Mostly it works the same way as hidden Suspense trees, which use the same internal fiber type. I had to add an extra bailout, though, that doesn't apply to the Suspense case but does apply to Offscreen components: a hidden Offscreen tree will eventually render at low priority, and when we it does, its
subtreeTagwill have effects scheduled on it. So I added a check to the layout phase where, if the subtree is hidden, we skip over the subtree entirely. An alternate design would be to clear the subtree flags in the render phase, but I prefer doing it this way since it's harder to mess up.We also need an API to enable the same thing for passive effects. This is not yet implemented.