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Persistent renderers used the `Update` effect flag to check if a subtree needs to be cloned. In some cases, that causes extra renders, such as when a layout effect is triggered which only has an effect on the JS side, but doesn't update the host components. It's been a bit tricky to find the right places where this needs to be set and I'm not 100% sure I got all the cases even though the tests passed.
28 lines
1.1 KiB
JavaScript
28 lines
1.1 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 strict
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*/
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// In xplat, these flags are controlled by GKs. Because most GKs have some
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// population running in either mode, we should run our tests that way, too,
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//
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// Use __VARIANT__ to simulate a GK. The tests will be run twice: once
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// with the __VARIANT__ set to `true`, and once set to `false`.
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//
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// TODO: __VARIANT__ isn't supported for React Native flags yet. You can set the
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// flag here but it won't be set to `true` in any of our test runs. Need to
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// add a test configuration for React Native.
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export const alwaysThrottleRetries = __VARIANT__;
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export const enableAddPropertiesFastPath = __VARIANT__;
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export const enableObjectFiber = __VARIANT__;
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export const enablePersistedModeClonedFlag = __VARIANT__;
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export const enableShallowPropDiffing = __VARIANT__;
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export const passChildrenWhenCloningPersistedNodes = __VARIANT__;
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export const enableFabricCompleteRootInCommitPhase = __VARIANT__;
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export const enableLazyContextPropagation = __VARIANT__;
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