text: /**
   * 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
   */
  
  import invariant from 'shared/invariant';
  
  import typeof * as FeatureFlagsType from 'shared/ReactFeatureFlags';
  import typeof * as ExportsType from './ReactFeatureFlags.test-renderer.www';
  
  export const debugRenderPhaseSideEffectsForStrictMode = false;
  export const enableUserTimingAPI = __DEV__;
  export const warnAboutDeprecatedLifecycles = true;
  export const replayFailedUnitOfWorkWithInvokeGuardedCallback = false;
  export const enableProfilerTimer = __PROFILE__;
  export const enableProfilerCommitHooks = false;
  export const enableSchedulerTracing = __PROFILE__;
  export const enableSuspenseServerRenderer = false;
  export const enableSelectiveHydration = false;
  export const enableBlocksAPI = false;
  export const warnAboutShorthandPropertyCollision = true;
  export const enableSchedulerDebugging = false;
  export const disableJavaScriptURLs = false;
  export const disableInputAttributeSyncing = false;
  export const enableDeprecatedFlareAPI = true;
  export const enableFundamentalAPI = false;
  export const enableScopeAPI = true;
  export const enableUseEventAPI = false;
  export const warnAboutUnmockedScheduler = true;
  export const flushSuspenseFallbacksInTests = true;
  export const enableSuspenseCallback = true;
  export const warnAboutDefaultPropsOnFunctionComponents = false;
  export const warnAboutStringRefs = false;
  export const disableLegacyContext = false;
  export const disableSchedulerTimeoutBasedOnReactExpirationTime = false;
  export const enableTrustedTypesIntegration = false;
  export const disableTextareaChildren = false;
  export const disableMapsAsChildren = false;
  export const disableModulePatternComponents = false;
  export const warnUnstableRenderSubtreeIntoContainer = false;
  export const deferPassiveEffectCleanupDuringUnmount = false;
  export const runAllPassiveEffectDestroysBeforeCreates = false;
  export const enableModernEventSystem = false;
  export const warnAboutSpreadingKeyToJSX = false;
  export const enableLegacyFBPrimerSupport = false;
  
  // Internal-only attempt to debug a React Native issue. See D20130868.
  export const throwEarlyForMysteriousError = false;
  
  // Only used in www builds.
  export function addUserTimingListener() {
    invariant(false, 'Not implemented.');
  }
  
  // Flow magic to verify the exports of this file match the original version.
  // eslint-disable-next-line no-unused-vars
  type Check<_X, Y: _X, X: Y = _X> = null;
  // eslint-disable-next-line no-unused-expressions
  (null: Check<ExportsType, FeatureFlagsType>);
  