React 19.x development guide covering internals (rendering, reconciliation, Fiber), performance optimization (47+ react-doctor rules, memoization, bundle size), UI animation patterns (CSS transitions, easing, hover/touch), and React Testing Library (RTL queries, interactions, TDD patterns). Use when package.json contains 'react' (without 'next'), or when working on React-specific concerns in any framework. For Next.js-specific features (App Router, Server Components, Cache Components), use developing-nextjs instead. For E2E testing with Playwright, use testing-e2e-with-playwright. For general testing methodology, use testing-code. For Clean Architecture patterns in React (DI, SPA layer mapping, Redux integration), see references/CLEAN-ARCHITECTURE.md. For general Clean Architecture principles, use applying-clean-architecture.
npx claudepluginhub sumik5/sumik-claude-pluginThis skill inherits all available tools. When active, it can use any tool Claude has access to.
INSTRUCTIONS.mdreferences/ANIMATION.mdreferences/CLEAN-ARCHITECTURE.mdreferences/REACT-GUIDE.mdreferences/REACT-TDD-PATTERNS.mdreferences/RI-DATA-MANAGEMENT.mdreferences/RI-FRAMEWORKS.mdreferences/RI-PATTERNS.mdreferences/RI-PERFORMANCE.mdreferences/RI-TESTING-AND-TOOLING.mdreferences/RI-TYPESCRIPT-REACT.mdreferences/RP-AGENTS.mdreferences/RP-README.mdreferences/RP-metadata.jsonreferences/RP-rules/_sections.mdreferences/RP-rules/_template.mdreferences/RP-rules/advanced-event-handler-refs.mdreferences/RP-rules/advanced-use-latest.mdreferences/RP-rules/async-api-routes.mdreferences/RP-rules/async-defer-await.md詳細な手順・ガイドラインは INSTRUCTIONS.md を参照してください。
Expert guidance for Next.js Cache Components and Partial Prerendering (PPR). **PROACTIVE ACTIVATION**: Use this skill automatically when working in Next.js projects that have `cacheComponents: true` in their next.config.ts/next.config.js. When this config is detected, proactively apply Cache Components patterns and best practices to all React Server Component implementations. **DETECTION**: At the start of a session in a Next.js project, check for `cacheComponents: true` in next.config. If enabled, this skill's patterns should guide all component authoring, data fetching, and caching decisions. **USE CASES**: Implementing 'use cache' directive, configuring cache lifetimes with cacheLife(), tagging cached data with cacheTag(), invalidating caches with updateTag()/revalidateTag(), optimizing static vs dynamic content boundaries, debugging cache issues, and reviewing Cache Component implementations.
Applies Anthropic's official brand colors and typography to any sort of artifact that may benefit from having Anthropic's look-and-feel. Use it when brand colors or style guidelines, visual formatting, or company design standards apply.
Creating algorithmic art using p5.js with seeded randomness and interactive parameter exploration. Use this when users request creating art using code, generative art, algorithmic art, flow fields, or particle systems. Create original algorithmic art rather than copying existing artists' work to avoid copyright violations.