This is the official React-Redux library, providing bindings for React components to connect to a Redux store. The source code defines the core public API: `<Provider>` component, `connect()` HOC, React hooks (`useSelector`, `useDispatch`, `useStore`), `shallowEqual`, and `batch`. Under the hood, it implements a custom subscription system (`Subscription.ts`) for correct nested component update ordering, a context-based store propagation mechanism, and a variety of selector factories and memoization utilities. The library is fully typed with TypeScript, includes extensive unit and integration tests, and supports both React 18 and 19, as well as limited React Server Components. The architecture is modular but tightly coupled to Redux semantics; no external dependencies beyond React and Redux. The codebase is actively maintained, uses modern tooling (Vitest, tsup, API Extractor), and has a small set of deprecated APIs (e.g., `batch`, `connect` with `withRef`).