A set of React composition rules for structuring components without boolean prop proliferation. Covers compound components, context providers, state lifting, and React 19 API changes. Designed to keep
A skill for writing and reviewing Next.js code across the full surface area of the framework. Covers file conventions, RSC boundaries, async API changes in Next.js 15+, metadata, image and font optimi
Next.js 16 Cache Components enable Partial Prerendering (PPR) by mixing static, cached, and dynamic content in a single route. The `use cache` directive replaces `unstable_cache` and lets you cache as
Upgrades a Next.js project to a newer version by reading the current package.json, fetching the official migration guides, running the appropriate codemods, and updating dependencies. Handles incremen
A set of 64 performance rules for React and Next.js, organized by impact level and covering waterfalls, bundle size, server rendering, re-renders, and JavaScript patterns. Maintained by Vercel Enginee
A collection of best practices for React Native and Expo apps, covering list performance, animations, navigation, UI patterns, and monorepo configuration. Rules are organized by priority and reference
Fetches the latest web interface guidelines from the Vercel Labs repository and checks your UI code against them. Reports violations in a terse file:line format covering accessibility, UX patterns, an