react/packages/shared/ReactFeatureFlags.js
Andrew Clark 9055e31e5c
Replace old Fiber Scheduler with new one (#15387)
The new Fiber Scheduler has been running in Facebook for several days
without issues. Let's switch to it.
2019-04-11 19:15:34 -07:00

70 lines
2.6 KiB
JavaScript

/**
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @flow strict
*/
export const enableUserTimingAPI = __DEV__;
// 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 = true;
// Gather advanced timing metrics for Profiler subtrees.
export const enableProfilerTimer = __PROFILE__;
// Trace which interactions trigger each commit.
export const enableSchedulerTracing = __PROFILE__;
// Only used in www builds.
export const enableSuspenseServerRenderer = false; // TODO: __DEV__? Here it might just be false.
// Only used in www builds.
export const enableSchedulerDebugging = false;
// Only used in www builds.
export function addUserTimingListener() {
throw new Error('Not implemented.');
}
// Disable javascript: URL strings in href for XSS protection.
export const disableJavaScriptURLs = false;
// Disables yielding during render in Concurrent Mode. Used for debugging only.
export const disableYielding = false;
// React Fire: prevent the value and checked attributes from syncing
// with their related DOM properties
export const disableInputAttributeSyncing = false;
// These APIs will no longer be "unstable" in the upcoming 16.7 release,
// Control this behavior with a flag to support 16.6 minor releases in the meanwhile.
export const enableStableConcurrentModeAPIs = false;
export const warnAboutShorthandPropertyCollision = false;
// See https://github.com/react-native-community/discussions-and-proposals/issues/72 for more information
// This is a flag so we can fix warnings in RN core before turning it on
export const warnAboutDeprecatedSetNativeProps = false;
// Experimental React Events support. Only used in www builds for now.
export const enableEventAPI = false;
// New API for JSX transforms to target - https://github.com/reactjs/rfcs/pull/107
export const enableJSXTransformAPI = false;