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About React Hooks and the Component Lifecycle: From Render to Concurrent UI

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How React function components actually run: the render/commit split, how useState queues and batches updates, why hook call order is a hard rule, and how effects, refs, and memoization hook into the lifecycle. Finishes with the modern concurrency surface — StrictMode double-invocation, useTransition, useSyncExternalStore, and the Server/Client Component boundary — so you can reason about React 19-era behavior, not just recite the API.

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What You'll Learn

Concepts:
Rules of Hooks useState Hook useReducer Hook Effect Cleanup Functions useTransition Hook Server and Client Component Boundary Custom Hooks useEffect Hook Effect Dependency Arrays StrictMode Double Invocation useRef Hook useContext Hook Render Phase vs Commit Phase useSyncExternalStore Hook State Update Queue and Automatic Batching useCallback Hook useMemo Hook

What you will learn

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