Next.js API Routes

⚛ React Hooks Reference useState/useEffect hooks reference ⚛ Context Patterns React Context API usage patterns ⚛ Performance Tips React performance optimization tips ⚛ Testing Library Reference React Testing Library reference ⚛ React Query Guide TanStack Query data fetching guide ⚛ Redux Toolkit RTK state management cheatsheet ⚛ React Router v6 React Router v6 routing guide 💚 Composition API Vue 3 Composition API reference 💚 Vue Router v4 Vue Router 4 routing config guide 💚 Pinia Guide Vue 3 Pinia state management 💚 Vite + Vue Setup Vite + Vue 3 project setup guide 💚 Vue Testing Vue Test Utils testing reference 🔺 Angular CLI Angular CLI commands cheatsheet 🔺 Angular Signals Angular 17+ Signals API reference 🔺 Angular Forms Guide Reactive & template forms guide