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Move priorities to separate import to break cycle #21060
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Works for me
Comparing: 25bfa28...0557a49 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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default: | ||
return NoLanePriority; | ||
return DefaultEventPriority; |
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This used to be NoLane, now it's DefaultLane. Any differences?
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I think that was just a mistake before. NoLanePriority would get passed to findUpdateLane
, which would throw:
react/packages/react-reconciler/src/ReactFiberLane.new.js
Lines 544 to 571 in 25bfa28
export function findUpdateLane(lanePriority: LanePriority): Lane { | |
switch (lanePriority) { | |
case NoLanePriority: | |
break; | |
case SyncLanePriority: | |
return SyncLane; | |
case SyncBatchedLanePriority: | |
return SyncBatchedLane; | |
case InputContinuousLanePriority: | |
return InputContinuousLane; | |
case DefaultLanePriority: | |
return DefaultLane; | |
case TransitionPriority: // Should be handled by findTransitionLane instead | |
case RetryLanePriority: // Should be handled by findRetryLane instead | |
break; | |
case IdleLanePriority: | |
return IdleLane; | |
default: | |
// The remaining priorities are not valid for updates | |
break; | |
} | |
invariant( | |
false, | |
'Invalid update priority: %s. This is a bug in React.', | |
lanePriority, | |
); | |
} |
I suppose we never hit this internally because we don't have any native event handlers that aren't part of the big switch.
I'll add a regression test as a follow up.
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Actually I'll address this in the next PR. We're about to remove the LanePriority type in favor of returning a lane directly.
: ContinuousEventPriority_old; | ||
export const IdleEventPriority = enableNewReconciler | ||
? IdleEventPriority_new | ||
: IdleEventPriority_old; |
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We currently reference these values in README. If we're removing them, can you update the README with a recommendation of what to do? E.g. just hardcoding numbers or telling people to look at this particular file. https://github.com/facebook/react/blob/master/packages/react-reconciler/README.md#getcurrenteventpriority
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The event priority constants exports by the reconciler package are meant to be used by the reconciler (host config) itself. So it doesn't make sense to export them from a module that requires them. To break the cycle, we can move them to a separate module and import that. This looks like a "deep import" of an internal module, which we try to avoid, but conceptually these are part of the public interface of the reconciler module. So, no different than importing from the main `react-reconciler`. We do need to be careful about not mixing these types of imports with implementation details. Those are the ones to really avoid. An unintended benefit of the reconciler fork infra is that it makes deep imports harder. Any module that we treat as "public", like this one, needs to account for the `enableNewReconciler` flag and forward to the correct implementation.
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DiscreteEventPriority, | ||
ContinuousEventPriority, | ||
DefaultEventPriority, | ||
} from './ReactFiberReconciler/src/ReactEventPriorities'; |
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Hmm. How does this work? It doesn't exist in the open source npm package. Should this suggest to copy-paste from our repo?
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I'll send a follow-up PR
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@@ -219,10 +219,16 @@ This is a property (not a function) that should be set to `true` if your rendere | |||
To implement this method, you'll need some constants available on the _returned_ `Renderer` object: |
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This sentence is no longer true
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
The event priority constants exports by the reconciler package are meant to be used by the reconciler (host config) itself. So it doesn't make sense to export them from a module that requires them. To break the cycle, we can move them to a separate module and import that. This looks like a "deep import" of an internal module, which we try to avoid, but conceptually these are part of the public interface of the reconciler module. So, no different than importing from the main `react-reconciler`. We do need to be careful about not mixing these types of imports with implementation details. Those are the ones to really avoid. An unintended benefit of the reconciler fork infra is that it makes deep imports harder. Any module that we treat as "public", like this one, needs to account for the `enableNewReconciler` flag and forward to the correct implementation.
The event priority constants exports by the reconciler package are meant to be used by the reconciler (host config) itself. So it doesn't make sense to export them from a module that requires them. To break the cycle, we can move them to a separate module and import that. This looks like a "deep import" of an internal module, which we try to avoid, but conceptually these are part of the public interface of the reconciler module. So, no different than importing from the main `react-reconciler`. We do need to be careful about not mixing these types of imports with implementation details. Those are the ones to really avoid. An unintended benefit of the reconciler fork infra is that it makes deep imports harder. Any module that we treat as "public", like this one, needs to account for the `enableNewReconciler` flag and forward to the correct implementation.
The event priority constants exports by the reconciler package are meant to be used by the reconciler (host config) itself. So it doesn't make sense to export them from a module that requires them. To break the cycle, we can move them to a separate module and import that. This looks like a "deep import" of an internal module, which we try to avoid, but conceptually these are part of the public interface of the reconciler module. So, no different than importing from the main `react-reconciler`. We do need to be careful about not mixing these types of imports with implementation details. Those are the ones to really avoid. An unintended benefit of the reconciler fork infra is that it makes deep imports harder. Any module that we treat as "public", like this one, needs to account for the `enableNewReconciler` flag and forward to the correct implementation.
Doesn't change any behavior. Just moves stuff around.
The event priority constants exported by the reconciler package are meant to be used by the reconciler (host config) itself. So it doesn't make sense to export them from a module that requires them.
To break the cycle, we can move them to a separate module and import that. This looks like a "deep import" of an internal module, which we try to avoid, but conceptually these are part of the public interface of the reconciler module. So, no different than importing from the main
react-reconciler
.We do need to be careful about not mixing these types of imports with implementation details. Those are the ones to really avoid.
An unintended benefit of the reconciler fork infra is that it makes deep imports harder. Any module that we treat as "public", like this one, needs to account for the
enableNewReconciler
flag and forward to the correct implementation.