[Fizz] Implement lazy components and nodes #21355
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This is used by Flight to encode not yet resolved nodes of any kind.
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Notably this doesn't call checkPropTypes on the resolved thing. The existing partial renderer doesn't do that neither for memo, lazy etc. The client will during hydration though. |
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gaearon
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Apr 27, 2021
facebook-github-bot
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Apr 28, 2021
Summary: This sync includes the following changes: - **[9a2591681](facebook/react@9a2591681 )**: Fix export //<Sebastian Markbage>// - **[4a8deb083](facebook/react@4a8deb083 )**: Switch the isPrimaryRender flag based on the stream config ([#21357](facebook/react#21357)) //<Sebastian Markbåge>// - **[bd4f056a3](facebook/react@bd4f056a3 )**: [Fizz] Implement lazy components and nodes ([#21355](facebook/react#21355)) //<Sebastian Markbåge>// - **[fc33f12bd](facebook/react@fc33f12bd )**: Remove unstable scheduler/tracing API ([#20037](facebook/react#20037)) //<Brian Vaughn>// - **[721238394](facebook/react@721238394 )**: Enable strict effects mode for React Native Facebook builds ([#21354](facebook/react#21354)) //<Brian Vaughn>// - **[48740429b](facebook/react@48740429b )**: Expiration: Do nothing except disable time slicing ([#21345](facebook/react#21345)) //<Andrew Clark>// - **[0f5ebf366](facebook/react@0f5ebf366 )**: Delete unreferenced type ([#21343](facebook/react#21343)) //<Andrew Clark>// - **[9cd52b27f](facebook/react@9cd52b27f )**: Restore context after an error happens ([#21341](facebook/react#21341)) //<Sebastian Markbåge>// - **[ad091759a](facebook/react@ad091759a )**: Revert "Emit reactroot attribute on the first element we discover ([#21154](facebook/react#21154))" ([#21340](facebook/react#21340)) //<Sebastian Markbåge>// - **[709f94841](facebook/react@709f94841 )**: [Fizz] Add FB specific streaming API and build ([#21337](facebook/react#21337)) //<Sebastian Markbåge>// - **[e8cdce40d](facebook/react@e8cdce40d )**: Don't flush sync at end of discreteUpdates ([#21327](facebook/react#21327)) //<Andrew Clark>// - **[a15586001](facebook/react@a15586001 )**: Fix: Don't flush discrete at end of batchedUpdates ([#21229](facebook/react#21229)) //<Andrew Clark>// - **[89847bf6e](facebook/react@89847bf6e )**: Continuous updates should interrupt transitions ([#21323](facebook/react#21323)) //<Andrew Clark>// - **[ef37d55b6](facebook/react@ef37d55b6 )**: Use performConcurrentWorkOnRoot for "sync default" ([#21322](facebook/react#21322)) //<Andrew Clark>// Changelog: [General][Changed] - React Native sync for revisions a632f7d...2a7bb41 jest_e2e[run_all_tests] Reviewed By: JoshuaGross Differential Revision: D28063006 fbshipit-source-id: 7e3535f80961706863b6c2188ee44b5796b2f000
koto
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Jun 15, 2021
* Implement lazy components * Implement lazy elements / nodes This is used by Flight to encode not yet resolved nodes of any kind.
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Implements React.lazy either in the component type position (the officially supported use case) and the node position (used by Flight).
This allows code on the server to be async loaded. It doesn't actually transfer any hints about what chunks you might want to eagerly preload like what react-loadable does. That's something you get for free with Server Components but not plain lazy.