Building real interfaces with React — hooks, state, and the tradeoffs that matter once an app grows past a tutorial.
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Build behavior-focused React component tests with Testing Library and Vitest, or adapt them to Jest. Learn accessible queries, realistic interactions, and deterministic async tests.
Decide whether to maintain or migrate a CRA app, then build a typed Redux Toolkit integration. Includes a current Vite setup and the legacy CRA commands you'll encounter in existing projects.