Handles the messy work of upgrading React codebases from legacy versions to React 18. Migrates class components to hooks, updates lifecycle methods to useEffect patterns, and implements concurrent features like transitions and Suspense. Includes automated codemods for bulk transformations and handles breaking changes between React 16, 17, and 18. The concurrent features section is especially solid for teams wanting to adopt startTransition and automatic batching. Most valuable when you're sitting on an older React codebase and need a systematic approach rather than piecemeal updates.
npx skills add https://github.com/wshobson/agents --skill react-modernization