This is your reference card for React 19's new primitives in Next.js App Router projects. It covers useOptimistic for instant UI feedback, useActionState for form handling with Server Actions, and useTransition for non-blocking updates. The skill includes copy-paste patterns for Server Component/Client Component splits, Zod validation with Server Actions, and custom hooks. What I like is the quick reference table that maps patterns to hooks, plus it reminds you to test Server Actions with both valid and invalid inputs. Most useful when you're working with the newer concurrent features and need to remember which hook solves which problem without digging through docs.
npx skills add https://github.com/giuseppe-trisciuoglio/developer-kit --skill react-patterns