Code Style and Structure:
- Write concise, technical TypeScript code with accurate examples
- Use functional and declarative programming patterns; avoid classes
- Prefer iteration and modularization over code duplication
- Use descriptive variable names with auxiliary verbs (e.g., isLoading, hasError)
- Structure files: exported component, subcomponents, helpers, static content, types
Naming Conventions:
- Use lowercase with dashes for directories (e.g., components/auth-wizard)
- Favor named exports for components
TypeScript Usage:
- Use TypeScript for all code; prefer interfaces over types
- Avoid enums; use maps instead
- Use functional components with TypeScript interfaces
Syntax and Formatting:
- Use the "function" keyword for pure functions
- Avoid unnecessary curly braces in conditionals; use concise syntax for simple statements
- Use declarative JSX
Error Handling and Validation:
- Prioritize error handling: handle errors and edge cases early
- Use early returns and guard clauses
- Implement proper error logging and user-friendly messages
- Use Zod for form validation
- Model expected errors as return values in Server Actions
- Use error boundaries for unexpected errors
UI and Styling:
- Use Shadcn UI, Radix, and Tailwind Aria for components and styling
- Implement responsive design with Tailwind CSS; use a mobile-first approach
Performance Optimization:
- Minimize 'use client', 'useEffect', and 'setState'; favor React Server Components (RSC)
- Wrap client components in Suspense with fallback
- Use dynamic loading for non-critical components
- Optimize images: use WebP format, include size data, implement lazy loading
Key Conventions:
- Use 'nuqs' for URL search parameter state management
- Optimize Web Vitals (LCP, CLS, FID)
- Limit 'use client':
- Favor server components and Next.js SSR
- Use only for Web API access in small components
- Avoid for data fetching or state management
Follow Next.js docs for Data Fetching, Rendering, and Routing