React state libs reduce to three patterns—are they obsolete?
The article breaks down Redux, Zustand, Jotai, MobX and Valtio, showing they all implement one of three core patterns—pub/sub with selectors, atom graphs, or proxy read‑tracking—wrapped in useSyncExternalStore. With those patterns understood, you can replace the libraries with small custom hooks, reserving them only for the rare complex shared client state.