[Fizz] Expose a method to explicitly start writing to a Node stream #21028
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Comparing: cf485e6...3036225 Critical size changesIncludes critical production bundles, as well as any change greater than 2%:
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gaearon
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…acebook#21028) * Expose an explicit point when to start writing in the Node API * Add a previously failing test
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Summary: This sync includes the following changes: - **[6d3ecb70d](facebook/react@6d3ecb70d )**: Remove unstable_changedBits ([#20953](facebook/react#20953)) //<Andrew Clark>// - **[754e30728](facebook/react@754e30728 )**: Delete immediateQueueCallbackNode ([#20980](facebook/react#20980)) //<Andrew Clark>// - **[be5a2e231](facebook/react@be5a2e231 )**: Land enableSyncMicrotasks ([#20979](facebook/react#20979)) //<Andrew Clark>// - **[f6bc9c824](facebook/react@f6bc9c824 )**: [Fizz] Expose maxBoundarySize as an option ([#21029](facebook/react#21029)) //<Sebastian Markbåge>// - **[154b85213](facebook/react@154b85213 )**: [Fizz] Expose a method to explicitly start writing to a Node stream ([#21028](facebook/react#21028)) //<Sebastian Markbåge>// - **[cf485e6f6](facebook/react@cf485e6f6 )**: [Fizz] Expose a method to abort a pending request ([#21027](facebook/react#21027)) //<Sebastian Markbåge>// - **[3fb11eed9](facebook/react@3fb11eed9 )**: React Native: Touch Instrumentation Interface ([#21024](facebook/react#21024)) //<Timothy Yung>// - **[825c3021f](facebook/react@825c3021f )**: Don't delete trailing mismatches during hydration at the root ([#21021](facebook/react#21021)) //<Sebastian Markbåge>// - **[1d1e49cfa](facebook/react@1d1e49cfa )**: [Fizz] Assign an ID to the first DOM element in a fallback or insert a dummy (and testing infra) ([#21020](facebook/react#21020)) //<Sebastian Markbåge>// - **[466b26c92](facebook/react@466b26c92 )**: Store commit durations on HostRoot for DevTools access ([#20983](facebook/react#20983)) //<Brian Vaughn>// - **[89acfa639](facebook/react@89acfa639 )**: Fix native event batching in concurrent mode ([#21010](facebook/react#21010)) //<Ricky>// - **[0203b6567](facebook/react@0203b6567 )**: chore: update react-reconciler README ([#21016](facebook/react#21016)) //<susiwen8>// Changelog: [General][Changed] - React Native sync for revisions c9f6d0a...6d3ecb7 jest_e2e[run_all_tests] Reviewed By: JoshuaGross, kacieb Differential Revision: D27231625 fbshipit-source-id: 89c0c0662e69044ae8890486a693013bee6005dd
koto
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…acebook#21028) * Expose an explicit point when to start writing in the Node API * Add a previously failing test
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We use writable Node streams because it's the only one that lets us explicitly flush to the underlying sink. Especially when used with gzip.
However, we don't want to start writing to it until after the header has been received and perhaps part of the initial content like
<head>has been written.This PR makes it so that you have to explicitly call "startWriting" to start flushing to a Node stream. We'll later expose some various callbacks for when it might be a good idea to start.
For Browser streams, we don't need this API because we use readable streams there. There's no writable streams and the gzip problem doesn't have a solution there. For readable streams you can just wait to provide that stream to the sink until you're ready.