You Need To Start Using This Underrated React Hook

A practical walkthrough of React's useSyncExternalStore hook as an alternative to useEffect for syncing external browser state into React. Covers three use cases: tracking navigator.onLine status, syncing HTML dialog element open/close state (including keyboard escape handling), and building a lightweight global store similar to Zustand or Redux without Context. Explains the hook's subscribe/snapshot/server-snapshot parameters and shows how to avoid common pitfalls like stale state references.