Remove hacky stream.locked check, declare as byte stream instead #23387
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We used to check for stream.locked in pull to see if we've been passed to something that reads yet. This was a bad hack because it won't actually call pull again if that changes. The source of this is because the default for "highWaterMark" is 1 on some streams. So it always wants to add one "chunk" (of size 1). If we leave our high water mark as 0, we won't fill up any buffers unless we're asked for more. This web API is somewhat odd because it would be way more efficient if it just told us how much the recipient wants instead of calling us once per chunk. Anyway, I turns out that if we define ourselves as a "bytes" type of stream, the default also happens to be a high water mark of 0 so we can just use that instead.
acdlite
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Mar 1, 2022
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Comparing: 086fa8e...2ede869 Critical size changesIncludes critical production bundles, as well as any change greater than 2%:
Significant size changesIncludes any change greater than 0.2%: Expand to show
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I believe this also means that this line is unnecessary because it'll always be zero. https://github.com/facebook/react/blob/main/packages/react-server/src/ReactServerStreamConfigBrowser.js#L38 |
facebook-github-bot
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Mar 1, 2022
Summary: This sync includes the following changes: - **[17806594c](facebook/react@17806594c )**: Move createRoot/hydrateRoot to react-dom/client ([#23385](facebook/react#23385)) //<Sebastian Markbåge>// - **[75662d6a7](facebook/react@75662d6a7 )**: Remove hacky stream.locked check, declare as byte stream instead ([#23387](facebook/react#23387)) //<Sebastian Markbåge>// - **[a82ef6d40](facebook/react@a82ef6d40 )**: Add back skipUnmountedBoundaries flag only for www ([#23383](facebook/react#23383)) //<Andrew Clark>// - **[f468816ef](facebook/react@f468816ef )**: Fix false positive hydration warnings ([#23364](facebook/react#23364)) //<Andrew Clark>// - **[5d08a24c2](facebook/react@5d08a24c2 )**: useId: Use 'H' to separate main id from hook index ([#23363](facebook/react#23363)) //<Andrew Clark>// - **[3a60844a0](facebook/react@3a60844a0 )**: Update error message for suspending at sync priority ([#23361](facebook/react#23361)) //<Andrew Clark>// - **[efe4121ee](facebook/react@efe4121ee )**: Add : to beginning and end of every useId ([#23360](facebook/react#23360)) //<Andrew Clark>// - **[42f15b324](facebook/react@42f15b324 )**: [DevTools][Transition Tracing] onTransitionComplete and onTransitionStart implmentation ([#23313](facebook/react#23313)) //<Luna Ruan>// - **[a5b22155c](facebook/react@a5b22155c )**: Warn if renderSubtreeIntoContainer is called ([#23355](facebook/react#23355)) //<Andrew Clark>// - **[52c393b5d](facebook/react@52c393b5d )**: Revert to client render on text mismatch ([#23354](facebook/react#23354)) //<Andrew Clark>// - **[1ad8d8129](facebook/react@1ad8d8129 )**: Remove object-assign polyfill ([#23351](facebook/react#23351)) //<Sebastian Markbåge>// - **[b3f3da205](facebook/react@b3f3da205 )**: Land warnOnSubscriptionInsideStartTransition flag ([#23353](facebook/react#23353)) //<Andrew Clark>// - **[990098f88](facebook/react@990098f88 )**: Re-arrange main ReactFeatureFlags module ([#23350](facebook/react#23350)) //<Andrew Clark>// - **[1f3f6db73](facebook/react@1f3f6db73 )**: Remove createMutableSource from stable exports ([#23352](facebook/react#23352)) //<Andrew Clark>// - **[587e75930](facebook/react@587e75930 )**: Remove Numeric Fallback of Symbols ([#23348](facebook/react#23348)) //<Sebastian Markbåge>// - **[40351575d](facebook/react@40351575d )**: Split writeChunk into void and return value ([#23343](facebook/react#23343)) //<Sebastian Markbåge>// - **[2c693b2de](facebook/react@2c693b2de )**: Re-add reentrancy avoidance ([#23342](facebook/react#23342)) //<Sebastian Markbåge>// - **[1760b27c0](facebook/react@1760b27c0 )**: Remove ./src/* export from public build ([#23262](facebook/react#23262)) //<Andrew Clark>// - **[552c067bb](facebook/react@552c067bb )**: Remove public export for unstable-shared-subset.js ([#23261](facebook/react#23261)) //<Andrew Clark>// Changelog: [General][Changed] - React Native sync for revisions 4de99b3...1780659 jest_e2e[run_all_tests] Reviewed By: rickhanlonii Differential Revision: D34552175 fbshipit-source-id: f1c831a45f96d335a20c3b4113196e0a42cefc03
himanshiLt
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Mar 10, 2022
…ebook#23387) We used to check for stream.locked in pull to see if we've been passed to something that reads yet. This was a bad hack because it won't actually call pull again if that changes. The source of this is because the default for "highWaterMark" is 1 on some streams. So it always wants to add one "chunk" (of size 1). If we leave our high water mark as 0, we won't fill up any buffers unless we're asked for more. This web API is somewhat odd because it would be way more efficient if it just told us how much the recipient wants instead of calling us once per chunk. Anyway, I turns out that if we define ourselves as a "bytes" type of stream, the default also happens to be a high water mark of 0 so we can just use that instead.
4 tasks
zhengjitf
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Apr 15, 2022
…ebook#23387) We used to check for stream.locked in pull to see if we've been passed to something that reads yet. This was a bad hack because it won't actually call pull again if that changes. The source of this is because the default for "highWaterMark" is 1 on some streams. So it always wants to add one "chunk" (of size 1). If we leave our high water mark as 0, we won't fill up any buffers unless we're asked for more. This web API is somewhat odd because it would be way more efficient if it just told us how much the recipient wants instead of calling us once per chunk. Anyway, I turns out that if we define ourselves as a "bytes" type of stream, the default also happens to be a high water mark of 0 so we can just use that instead.
Saadnajmi
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to Saadnajmi/react-native-macos
that referenced
this pull request
Jan 15, 2023
Summary: This sync includes the following changes: - **[17806594c](facebook/react@17806594c )**: Move createRoot/hydrateRoot to react-dom/client ([facebook#23385](facebook/react#23385)) //<Sebastian Markbåge>// - **[75662d6a7](facebook/react@75662d6a7 )**: Remove hacky stream.locked check, declare as byte stream instead ([facebook#23387](facebook/react#23387)) //<Sebastian Markbåge>// - **[a82ef6d40](facebook/react@a82ef6d40 )**: Add back skipUnmountedBoundaries flag only for www ([facebook#23383](facebook/react#23383)) //<Andrew Clark>// - **[f468816ef](facebook/react@f468816ef )**: Fix false positive hydration warnings ([facebook#23364](facebook/react#23364)) //<Andrew Clark>// - **[5d08a24c2](facebook/react@5d08a24c2 )**: useId: Use 'H' to separate main id from hook index ([facebook#23363](facebook/react#23363)) //<Andrew Clark>// - **[3a60844a0](facebook/react@3a60844a0 )**: Update error message for suspending at sync priority ([facebook#23361](facebook/react#23361)) //<Andrew Clark>// - **[efe4121ee](facebook/react@efe4121ee )**: Add : to beginning and end of every useId ([facebook#23360](facebook/react#23360)) //<Andrew Clark>// - **[42f15b324](facebook/react@42f15b324 )**: [DevTools][Transition Tracing] onTransitionComplete and onTransitionStart implmentation ([facebook#23313](facebook/react#23313)) //<Luna Ruan>// - **[a5b22155c](facebook/react@a5b22155c )**: Warn if renderSubtreeIntoContainer is called ([facebook#23355](facebook/react#23355)) //<Andrew Clark>// - **[52c393b5d](facebook/react@52c393b5d )**: Revert to client render on text mismatch ([facebook#23354](facebook/react#23354)) //<Andrew Clark>// - **[1ad8d8129](facebook/react@1ad8d8129 )**: Remove object-assign polyfill ([facebook#23351](facebook/react#23351)) //<Sebastian Markbåge>// - **[b3f3da205](facebook/react@b3f3da205 )**: Land warnOnSubscriptionInsideStartTransition flag ([facebook#23353](facebook/react#23353)) //<Andrew Clark>// - **[990098f88](facebook/react@990098f88 )**: Re-arrange main ReactFeatureFlags module ([facebook#23350](facebook/react#23350)) //<Andrew Clark>// - **[1f3f6db73](facebook/react@1f3f6db73 )**: Remove createMutableSource from stable exports ([facebook#23352](facebook/react#23352)) //<Andrew Clark>// - **[587e75930](facebook/react@587e75930 )**: Remove Numeric Fallback of Symbols ([facebook#23348](facebook/react#23348)) //<Sebastian Markbåge>// - **[40351575d](facebook/react@40351575d )**: Split writeChunk into void and return value ([facebook#23343](facebook/react#23343)) //<Sebastian Markbåge>// - **[2c693b2de](facebook/react@2c693b2de )**: Re-add reentrancy avoidance ([facebook#23342](facebook/react#23342)) //<Sebastian Markbåge>// - **[1760b27c0](facebook/react@1760b27c0 )**: Remove ./src/* export from public build ([facebook#23262](facebook/react#23262)) //<Andrew Clark>// - **[552c067bb](facebook/react@552c067bb )**: Remove public export for unstable-shared-subset.js ([facebook#23261](facebook/react#23261)) //<Andrew Clark>// Changelog: [General][Changed] - React Native sync for revisions 4de99b3...1780659 jest_e2e[run_all_tests] Reviewed By: rickhanlonii Differential Revision: D34552175 fbshipit-source-id: f1c831a45f96d335a20c3b4113196e0a42cefc03
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We used to check for stream.locked in pull to see if we've been passed to something that reads yet.
This was a bad hack because it won't actually call pull again if that changes.
The source of this is because the default for "highWaterMark" is 1 on some streams. So it always wants to add one "chunk" (of size 1).
If we leave our high water mark as 0, we won't fill up any buffers unless we're asked for more.
This web API is somewhat odd because it would be way more efficient if it just told us how much the recipient wants instead of calling us once per chunk.
Anyway, I turns out that if we define ourselves as a "bytes" type of stream, the default also happens to be a high water mark of 0 so we can just use that instead.