1. /**
    
  2.  * Copyright (c) Meta Platforms, Inc. and affiliates.
    
  3.  *
    
  4.  * This source code is licensed under the MIT license found in the
    
  5.  * LICENSE file in the root directory of this source tree.
    
  6.  *
    
  7.  * @flow
    
  8.  */
    
  9. 
    
  10. import type {FiberRoot} from './ReactInternalTypes';
    
  11. import type {RootState} from './ReactFiberRoot';
    
  12. 
    
  13. // This is imported by the event replaying implementation in React DOM. It's
    
  14. // in a separate file to break a circular dependency between the renderer and
    
  15. // the reconciler.
    
  16. export function isRootDehydrated(root: FiberRoot): boolean {
    
  17.   const currentState: RootState = root.current.memoizedState;
    
  18.   return currentState.isDehydrated;
    
  19. }