[Fizz] Expose callbacks in options for when various stages of the content is done #21056
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This allows you to log errors or set things like status codes.
This is typically not needed because if you want to stream when the root is ready you can just start writing immediately.
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gaearon
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This was referenced Mar 29, 2021
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Summary: This sync includes the following changes: - **[c9aab1c9d](facebook/react@c9aab1c9d )**: react-refresh@0.10.0 //<Dan Abramov>// - **[516b76b9a](facebook/react@516b76b9a )**: [Fast Refresh] Support callthrough HOCs ([#21104](facebook/react#21104)) //<Dan Abramov>// - **[0853aab74](facebook/react@0853aab74 )**: Log all errors to console.error by default ([#21130](facebook/react#21130)) //<Sebastian Markbåge>// - **[d1294c9d4](facebook/react@d1294c9d4 )**: Add global onError handler ([#21129](facebook/react#21129)) //<Sebastian Markbåge>// - **[64983aab5](facebook/react@64983aab5 )**: Remove redundant setUpdatePriority call ([#21127](facebook/react#21127)) //<Andrew Clark>// - **[634cc52e6](facebook/react@634cc52e6 )**: Delete dead variable: currentEventWipLanes ([#21123](facebook/react#21123)) //<Andrew Clark>// - **[1102224bb](facebook/react@1102224bb )**: Fix: flushSync changes priority inside effect ([#21122](facebook/react#21122)) //<Andrew Clark>// - **[dbe98a5aa](facebook/react@dbe98a5aa )**: Move sync task queue to its own module ([#21109](facebook/react#21109)) //<Andrew Clark>// - **[3ba5c8737](facebook/react@3ba5c8737 )**: Remove Scheduler indirection ([#21107](facebook/react#21107)) //<Andrew Clark>// - **[46b68eaf6](facebook/react@46b68eaf6 )**: Delete LanePriority type ([#21090](facebook/react#21090)) //<Andrew Clark>// - **[dcd13045e](facebook/react@dcd13045e )**: Use Lane to track root callback priority ([#21089](facebook/react#21089)) //<Andrew Clark>// - **[5f21a9fca](facebook/react@5f21a9fca )**: Clean up host pointers in level 2 of clean-up flag ([#21112](facebook/react#21112)) //<Andrew Clark>// - **[32d6f39ed](facebook/react@32d6f39ed )**: [Fizz] Support special HTML/SVG/MathML tags to suspend ([#21113](facebook/react#21113)) //<Sebastian Markbåge>// - **[a77dd13ed](facebook/react@a77dd13ed )**: Delete enableDiscreteEventFlushingChange ([#21110](facebook/react#21110)) //<Andrew Clark>// - **[048ee4c0c](facebook/react@048ee4c0c )**: Use `act` in fuzz tester to flush expired work ([#21108](facebook/react#21108)) //<Andrew Clark>// - **[556644e23](facebook/react@556644e23 )**: Fix plurals ([#21106](facebook/react#21106)) //<Sebastian Markbåge>// - **[8b741437b](facebook/react@8b741437b )**: Rename SuspendedWork to Task ([#21105](facebook/react#21105)) //<Sebastian Markbåge>// - **[38a1aedb4](facebook/react@38a1aedb4 )**: [Fizz] Add FormatContext and Refactor Work ([#21103](facebook/react#21103)) //<Sebastian Markbåge>// - **[1b7e471b9](facebook/react@1b7e471b9 )**: React Native New Architecture: Support passing nativeViewTag to getInspectorDataForViewAtPoint callback, for React DevTools compat ([#21080](facebook/react#21080)) //<Joshua Gross>// - **[4a99c5c3a](facebook/react@4a99c5c3a )**: Use highest priority lane to detect interruptions ([#21088](facebook/react#21088)) //<Andrew Clark>// - **[77be52729](facebook/react@77be52729 )**: Remove LanePriority from computeExpirationTime ([#21087](facebook/react#21087)) //<Andrew Clark>// - **[3221e8fba](facebook/react@3221e8fba )**: Remove LanePriority from getBumpedLaneForHydration ([#21086](facebook/react#21086)) //<Andrew Clark>// - **[05ec0d764](facebook/react@05ec0d764 )**: Entangled expired lanes with SyncLane ([#21083](facebook/react#21083)) //<Andrew Clark>// - **[03ede83d2](facebook/react@03ede83d2 )**: Use EventPriority to track update priority ([#21082](facebook/react#21082)) //<Andrew Clark>// - **[a63f0953b](facebook/react@a63f0953b )**: Delete SyncBatchedLane ([#21061](facebook/react#21061)) //<Ricky>// - **[fa868d6be](facebook/react@fa868d6be )**: Make opaque EventPriority type a Lane internally ([#21065](facebook/react#21065)) //<Andrew Clark>// - **[eb58c3909](facebook/react@eb58c3909 )**: react-hooks/exhaustive-deps: Handle optional chained methods as dependency ([#20204](facebook/react#20204)) ([#20247](facebook/react#20247)) //<Ari Perkkiö>// - **[7b84dbd16](facebook/react@7b84dbd16 )**: Fail build on deep requires in npm packages ([#21063](facebook/react#21063)) //<Dan Abramov>// - **[2c9d8efc8](facebook/react@2c9d8efc8 )**: Add react-reconciler/constants entry point ([#21062](facebook/react#21062)) //<Dan Abramov>// - **[d0eaf7829](facebook/react@d0eaf7829 )**: Move priorities to separate import to break cycle ([#21060](facebook/react#21060)) //<Andrew Clark>// - **[435cff986](facebook/react@435cff986 )**: [Fizz] Expose callbacks in options for when various stages of the content is done ([#21056](facebook/react#21056)) //<Sebastian Markbåge>// - **[25bfa287f](facebook/react@25bfa287f )**: [Experiment] Add feature flag for more aggressive memory clean-up of deleted fiber trees ([#21039](facebook/react#21039)) //<Benoit Girard>// - **[8fe7810e7](facebook/react@8fe7810e7 )**: Remove already completed comment ([#21054](facebook/react#21054)) //<Sebastian Markbåge>// - **[6c3202b1e](facebook/react@6c3202b1e )**: [Fizz] Use identifierPrefix to avoid conflicts within the same response ([#21037](facebook/react#21037)) //<Sebastian Markbåge>// - **[dcdf8de7e](facebook/react@dcdf8de7e )**: Remove discrete lanes and priorities ([#21040](facebook/react#21040)) //<Andrew Clark>// - **[ca99ae97b](facebook/react@ca99ae97b )**: Replace some flushExpired callsites ([#20975](facebook/react#20975)) //<Ricky>// - **[1fafac002](facebook/react@1fafac002 )**: Use SyncLane for discrete event hydration ([#21038](facebook/react#21038)) //<Andrew Clark>// Changelog: [General][Changed] - React Native sync for revisions 6d3ecb7...c9aab1c jest_e2e[run_all_tests] Reviewed By: JoshuaGross Differential Revision: D27436763 fbshipit-source-id: da79a41e26bffdcdacd293178062edf098e9b58a
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…tent is done (facebook#21056) * Report errors to a global handler This allows you to log errors or set things like status codes. * Add complete callback * onReadyToStream callback This is typically not needed because if you want to stream when the root is ready you can just start writing immediately. * Rename onComplete -> onCompleteAll
Remind me what content is considered high priority in the context of server rendering? :) |
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I'm not actually sure what I meant in this context. Not sure it makes sense to wait for. :) That said, there are a couple of different categories of priority. The ones implemented so far:
Things that we haven't done yet:
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Makes sense, thanks for the reply! |
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Oct 24, 2021
…tent is done (facebook#21056) * Report errors to a global handler This allows you to log errors or set things like status codes. * Add complete callback * onReadyToStream callback This is typically not needed because if you want to stream when the root is ready you can just start writing immediately. * Rename onComplete -> onCompleteAll
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Oct 24, 2021
…tent is done (facebook#21056) * Report errors to a global handler This allows you to log errors or set things like status codes. * Add complete callback * onReadyToStream callback This is typically not needed because if you want to stream when the root is ready you can just start writing immediately. * Rename onComplete -> onCompleteAll
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onError is called when an error happens anywhere in the tree. It can be called multiple times if it's not a fatal error. This can be used for logging or setting a status code of a request.
onCompleteAll is called when all pending work is done but it may not have flushed yet. If you don't want to incrementally stream the content, you can wait to call startWriting until this point. That way we only emit the final HTML.
onReadyToStream is called when there is at least a root fallback ready to show. You typically don't need this callback because you can just startWriting immediately if you don't expect to need to change the status code or anything.
Another strategy for deciding when to call startWriting is just a timer based approach that starts writing after some timeout.
In the future we can also add callbacks for when certain priority levels are complete. So you can for example wait until all the high pri content is done.