vercel-react-best-practices
45 performance rules for React and Next.js, organized by impact from waterfalls and bundle optimization down to advanced patterns.
- Covers 8 rule categories prioritized by impact: eliminating waterfalls (Promise.all, Suspense), bundle size (direct imports, dynamic loading), server-side caching, client-side deduplication, re-render optimization, rendering performance, JavaScript efficiency, and advanced patterns
- Each rule includes explanation, incorrect and correct code examples, and context for when to apply it
- Focuses on critical patterns like parallelizing independent fetches, avoiding barrel file imports, using dynamic imports for heavy components, and minimizing data serialization to clients
- Designed for automated code generation and refactoring workflows across React components, Next.js pages, and data-fetching layers
Vercel React Best Practices
Comprehensive performance optimization guide for React and Next.js applications, maintained by Vercel. Contains 45 rules across 8 categories, prioritized by impact to guide automated refactoring and code generation.
When to Apply
Reference these guidelines when:
- Writing new React components or Next.js pages
- Implementing data fetching (client or server-side)
- Reviewing code for performance issues
- Refactoring existing React/Next.js code
- Optimizing bundle size or load times
Rule Categories by Priority
| Priority | Category | Impact | Prefix |
|---|---|---|---|
| 1 | Eliminating Waterfalls | CRITICAL | async- |
| 2 | Bundle Size Optimization | CRITICAL | bundle- |
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