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Found 28 Skills
Master modern React state management with Redux Toolkit, Zustand, Jotai, and React Query. Use when setting up global state, managing server state, or choosing between state management solutions.
Manage server state in React with TanStack Query v5. Covers useMutationState, simplified optimistic updates, throwOnError, network mode (offline/PWA), and infiniteQueryOptions. Use when setting up data fetching, fixing v4→v5 migration errors (object syntax, gcTime, isPending, keepPreviousData), or debugging SSR/hydration issues with streaming server components.
Build type-safe global state in React with Zustand. Supports TypeScript, persist middleware, devtools, slices pattern, and Next.js SSR with hydration handling. Prevents 6 documented errors. Use when setting up React state, migrating from Redux/Context, or troubleshooting hydration errors, TypeScript inference, infinite render loops, or persist race conditions.
Manage React state in URL query parameters with nuqs. Covers Suspense boundaries, parsers, clearing state, and deep-linkable dialogs.
Create Zustand stores with TypeScript, subscribeWithSelector middleware, and proper state/action separation. Use when building React state management, creating global stores, or implementing reactive state patterns with Zustand.
Comprehensive Redux Toolkit best practices for React and Next.js applications with TypeScript.
Zustand v5 state management for React. Covers TypeScript stores with double-parentheses syntax, persist middleware with hydration handling, devtools, subscribeWithSelector, slices pattern for large apps, SSR/Next.js provider pattern, immer middleware, auto-generating selectors, testing, and vanilla stores. Use when setting up global state, configuring persist middleware, implementing slices pattern, migrating from Redux or Context, testing stores, or troubleshooting hydration and TypeScript issues.
Valtio proxy state management for React and vanilla JavaScript. Use when creating reactive state, managing application state, or working with proxy-based state management.
Practical immutability patterns in TypeScript - spread operators, nested updates, readonly types, and when mutation is actually fine
Zustand state management patterns for React applications. Use when implementing client-side global state, persisted state, or computed values. Lightweight alternative to Redux with minimal boilerplate.
Refactor and review state management in React and TypeScript applications. Use when: refactoring component state, reviewing useState usage, choosing between local and global state, preventing unnecessary re-renders, selecting state management libraries (Zustand, Jotai, Redux), applying discriminated unions, deriving state, managing refs vs state, or eliminating prop drilling.
Jotai状態管理ライブラリのエキスパートスキル。Reactアプリケーションでのatomベースの状態管理を実装する際に使用。以下の場合にこのスキルを使用: (1) Jotaiのatom設計・実装 (2) 派生atom、非同期atom、atomFamilyの実装 (3) Jotaiのベストプラクティスに基づくリファクタリング (4) パフォーマンス最適化（selectAtom、splitAtom等） (5) 永続化（localStorage/sessionStorage連携） (6) TypeScript型定義 (7) テスト実装 ユーザーが「Jotai」「atom」「状態管理」に関する質問や実装依頼をした場合に発動。