1. # use-sync-external-store
    
  2. 
    
  3. Backwards-compatible shim for [`React.useSyncExternalStore`](https://reactjs.org/docs/hooks-reference.html#usesyncexternalstore). Works with any React that supports Hooks.
    
  4. 
    
  5. See also https://github.com/reactwg/react-18/discussions/86.