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 strict
   */
  
  // Helps identify side effects in render-phase lifecycle hooks and setState
  // reducers by double invoking them in Strict Mode.
  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__;
  
  // Record durations for commit and passive effects phases.
  export const enableProfilerCommitHooks = false;
  
  // Trace which interactions trigger each commit.
  export const enableSchedulerTracing = __PROFILE__;
  
  // SSR experiments
  export const enableSuspenseServerRenderer = __EXPERIMENTAL__;
  export const enableSelectiveHydration = __EXPERIMENTAL__;
  
  // Flight experiments
  export const enableBlocksAPI = __EXPERIMENTAL__;
  
  // Only used in www builds.
  export const enableSchedulerDebugging = false;
  
  // Disable javascript: URL strings in href for XSS protection.
  export const disableJavaScriptURLs = false;
  
  // Experimental React Flare event system and event components support.
  export const enableDeprecatedFlareAPI = false;
  
  // Experimental Host Component support.
  export const enableFundamentalAPI = false;
  
  // Experimental Scope support.
  export const enableScopeAPI = false;
  
  // Experimental useEvent support.
  export const enableUseEventAPI = false;
  
  // New API for JSX transforms to target - https://github.com/reactjs/rfcs/pull/107
  
  // We will enforce mocking scheduler with scheduler/unstable_mock at some point. (v17?)
  // Till then, we warn about the missing mock, but still fallback to a legacy mode compatible version
  export const warnAboutUnmockedScheduler = false;
  
  // For tests, we flush suspense fallbacks in an act scope;
  // *except* in some of our own tests, where we test incremental loading states.
  export const flushSuspenseFallbacksInTests = true;
  
  // Add a callback property to suspense to notify which promises are currently
  // in the update queue. This allows reporting and tracing of what is causing
  // the user to see a loading state.
  // Also allows hydration callbacks to fire when a dehydrated boundary gets
  // hydrated or deleted.
  export const enableSuspenseCallback = false;
  
  // Part of the simplification of React.createElement so we can eventually move
  // from React.createElement to React.jsx
  // https://github.com/reactjs/rfcs/blob/createlement-rfc/text/0000-create-element-changes.md
  export const warnAboutDefaultPropsOnFunctionComponents = false;
  
  export const disableSchedulerTimeoutBasedOnReactExpirationTime = false;
  
  export const enableTrustedTypesIntegration = false;
  
  // Controls sequence of passive effect destroy and create functions.
  // If this flag is off, destroy and create functions may be interleaved.
  // When the flag is on, all destroy functions will be run (for all fibers)
  // before any create functions are run, similar to how layout effects work.
  // This flag provides a killswitch if that proves to break existing code somehow.
  export const runAllPassiveEffectDestroysBeforeCreates = false;
  
  // Controls behavior of deferred effect destroy functions during unmount.
  // Previously these functions were run during commit (along with layout effects).
  // Ideally we should delay these until after commit for performance reasons.
  // This flag provides a killswitch if that proves to break existing code somehow.
  //
  // WARNING This flag only has an affect if used with runAllPassiveEffectDestroysBeforeCreates.
  export const deferPassiveEffectCleanupDuringUnmount = false;
  
  // Enables a warning when trying to spread a 'key' to an element;
  // a deprecated pattern we want to get rid of in the future
  export const warnAboutSpreadingKeyToJSX = false;
  
  // Internal-only attempt to debug a React Native issue. See D20130868.
  export const throwEarlyForMysteriousError = false;
  
  export const enableNewReconciler = false;
  
  // --------------------------
  // Future APIs to be deprecated
  // --------------------------
  
  // Prevent the value and checked attributes from syncing
  // with their related DOM properties
  export const disableInputAttributeSyncing = false;
  
  export const warnAboutStringRefs = false;
  
  export const disableLegacyContext = false;
  
  // Disables children for <textarea> elements
  export const disableTextareaChildren = false;
  
  export const disableModulePatternComponents = false;
  
  // We should remove this flag once the above flag becomes enabled
  export const warnUnstableRenderSubtreeIntoContainer = false;
  
  // Modern event system where events get registered at roots
  export const enableModernEventSystem = false;
  
  // Support legacy Primer support on internal FB www
  export const enableLegacyFBSupport = false;
  