Files
react/packages/shared/ReactFeatureFlags.js
Andrew Clark 4b2e65d32e Put recent change to getDerivedStateFromProps behind a feature flag (#12788)
This will allow us to safely ship it at Facebook and get a better idea
for if/how it breaks existing product code.
2018-05-11 18:45:00 -07:00

52 lines
1.9 KiB
JavaScript

/**
* Copyright (c) 2013-present, Facebook, Inc.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @flow
*/
import invariant from 'fbjs/lib/invariant';
// Exports ReactDOM.createRoot
export const enableUserTimingAPI = __DEV__;
// Mutating mode (React DOM, React ART, React Native):
export const enableMutatingReconciler = true;
// Experimental noop mode (currently unused):
export const enableNoopReconciler = false;
// Experimental persistent mode (Fabric):
export const enablePersistentReconciler = false;
// Experimental error-boundary API that can recover from errors within a single
// render phase
export const enableGetDerivedStateFromCatch = false;
// Suspense
export const enableSuspense = false;
// Helps identify side effects in begin-phase lifecycle hooks and setState reducers:
export const debugRenderPhaseSideEffects = false;
// In some cases, StrictMode should also double-render lifecycles.
// This can be confusing for tests though,
// And it can be bad for performance in production.
// This feature flag can be used to control the behavior:
export const debugRenderPhaseSideEffectsForStrictMode = __DEV__;
// To preserve the "Pause on caught exceptions" behavior of the debugger, we
// replay the begin phase of a failed component inside invokeGuardedCallback.
export const replayFailedUnitOfWorkWithInvokeGuardedCallback = __DEV__;
// Warn about deprecated, async-unsafe lifecycles; relates to RFC #6:
export const warnAboutDeprecatedLifecycles = false;
// Gather advanced timing metrics for Profiler subtrees.
export const enableProfilerTimer = false;
// Fires getDerivedStateFromProps for state *or* props changes
export const fireGetDerivedStateFromPropsOnStateUpdates = true;
// Only used in www builds.
export function addUserTimingListener() {
invariant(false, 'Not implemented.');
}