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bb9a24d9fc
## Summary `fastAddProperties` has shown some perf benefits when used for creating props payload for new components. In this PR we'll try to use it for diffing props for existing components. It would be good enough if it simply doesn't regress perf. We'll be able to delete the old `addProperties`, and make `fastAddProperties` the default behaviour. ## How did you test this change? ``` yarn lint yarn flow native yarn test packages/react-native-renderer -r=xplat --variant=false yarn test packages/react-native-renderer -r=xplat --variant=true ```
116 lines
3.5 KiB
JavaScript
116 lines
3.5 KiB
JavaScript
/**
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @flow
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*/
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import typeof * as FeatureFlagsType from 'shared/ReactFeatureFlags';
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import typeof * as ExportsType from './ReactFeatureFlags.www';
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import typeof * as DynamicFeatureFlags from './ReactFeatureFlags.www-dynamic';
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// Re-export dynamic flags from the www version.
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const dynamicFeatureFlags: DynamicFeatureFlags = require('ReactFeatureFlags');
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export const {
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alwaysThrottleRetries,
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disableDefaultPropsExceptForClasses,
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disableLegacyContextForFunctionComponents,
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disableSchedulerTimeoutInWorkLoop,
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enableDO_NOT_USE_disableStrictPassiveEffect,
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enableHiddenSubtreeInsertionEffectCleanup,
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enableInfiniteRenderLoopDetection,
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enableNoCloningMemoCache,
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enableObjectFiber,
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enableRenderableContext,
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enableRetryLaneExpiration,
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enableSiblingPrerendering,
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enableTransitionTracing,
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enableTrustedTypesIntegration,
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enableUseResourceEffectHook,
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favorSafetyOverHydrationPerf,
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renameElementSymbol,
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retryLaneExpirationMs,
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syncLaneExpirationMs,
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transitionLaneExpirationMs,
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enableOwnerStacks,
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enableRemoveConsolePatches,
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enableFastAddPropertiesInDiffing,
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} = dynamicFeatureFlags;
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// On WWW, __EXPERIMENTAL__ is used for a new modern build.
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// It's not used anywhere in production yet.
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export const enableProfilerTimer = __PROFILE__;
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export const enableProfilerCommitHooks = __PROFILE__;
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export const enableProfilerNestedUpdatePhase = __PROFILE__;
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export const enableUpdaterTracking = __PROFILE__;
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export const enableFabricCompleteRootInCommitPhase = false;
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export const enableSuspenseAvoidThisFallback = true;
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export const enableCPUSuspense = true;
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export const enableUseEffectEventHook = true;
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export const enableMoveBefore = false;
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export const disableInputAttributeSyncing = false;
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export const enableLegacyFBSupport = true;
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export const enableYieldingBeforePassive = false;
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export const enableThrottledScheduling = false;
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export const enableViewTransition = false;
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export const enableHydrationLaneScheduling = true;
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export const enableComponentPerformanceTrack = false;
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// Logs additional User Timing API marks for use with an experimental profiling tool.
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export const enableSchedulingProfiler: boolean =
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__PROFILE__ && dynamicFeatureFlags.enableSchedulingProfiler;
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export const disableLegacyContext = __EXPERIMENTAL__;
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export const enableLegacyCache = true;
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export const enableAsyncIterableChildren = false;
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export const enableTaint = false;
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export const enablePostpone = false;
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export const enableHalt = false;
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// TODO: www currently relies on this feature. It's disabled in open source.
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// Need to remove it.
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export const disableCommentsAsDOMContainers = false;
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export const enableCreateEventHandleAPI = true;
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export const enableScopeAPI = true;
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export const enableSuspenseCallback = true;
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export const enableLegacyHidden = true;
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export const disableTextareaChildren = __EXPERIMENTAL__;
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export const enableFizzExternalRuntime = true;
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export const passChildrenWhenCloningPersistedNodes = false;
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export const enablePersistedModeClonedFlag = false;
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export const enableAsyncDebugInfo = false;
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export const disableClientCache = true;
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export const enableReactTestRendererWarning = false;
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export const disableLegacyMode = true;
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export const enableShallowPropDiffing = false;
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// Flow magic to verify the exports of this file match the original version.
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((((null: any): ExportsType): FeatureFlagsType): ExportsType);
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