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Manage PrismaClient lifecycle with graceful shutdown, proper disconnect timing, and logging configuration. Use when setting up application shutdown handlers, configuring logging for development or production, o...
Teaches React Testing Library patterns for React 19 components. Use when writing component tests, testing interactions, or testing with Server Actions.
Deploy migrations to production safely using migrate deploy in CI/CD. Use when setting up production deployment pipelines.
Teaches what React Compiler handles automatically in React 19, reducing need for manual memoization. Use when optimizing performance or deciding when to use useMemo/useCallback.
Review Server Actions for security, validation, and best practices in React 19. Use when reviewing forms, mutations, or server-side logic.
Use migrate dev for versioned migrations; db push for rapid prototyping. Use when developing schema changes locally.
Teaches code splitting with lazy() and Suspense in React 19 for reducing initial bundle size. Use when implementing lazy loading, route-based splitting, or optimizing performance.
Teach async request APIs in Next.js 16 - params, searchParams, cookies(), headers(), draftMode() are now async. Use when migrating from Next.js 15, fixing type errors, or working with request data.
Teaches resource preloading APIs in React 19 including prefetchDNS, preconnect, preload, and preinit. Use when optimizing initial load or navigation performance.
Implement cursor-based or offset pagination for Prisma queries. Use for datasets 100k+, APIs with page navigation, or infinite scroll/pagination mentions.
Validate code for Zod v4 compatibility by detecting deprecated APIs and ensuring adherence to v4 patterns
[REPLACE] Plan changes, validate before execution, execute with verification. Use when [REPLACE with specific triggers].
Automated tooling and detection patterns for analyzing npm dependencies, unused packages, and dead code. Provides tool commands and what to look for—not how to structure output.
Fix React Rules of Hooks violations - conditional calls, hooks in loops/callbacks/classes
Migrate from Tailwind CSS v3 to v4 including configuration migration (JS to CSS), utility renames, opacity changes, and color system updates. Use when upgrading existing projects to v4.
Teach server action authentication and security patterns in Next.js 16. Use when implementing server actions, form handlers, or mutations that need authentication.
Analyze code complexity and maintainability including cyclomatic complexity, function length, nesting depth, and cognitive load. Use when reviewing code maintainability, refactoring candidates, or technical deb...
Automated tooling and detection patterns for identifying duplicate and copy-pasted code in JavaScript/TypeScript projects. Provides tool commands and refactoring patterns—not workflow or output formatting.
Handle transaction errors properly with P-code checking and timeout configuration. Use when implementing transaction error recovery.
Prevent multiple PrismaClient instances that exhaust connection pools causing P1017 errors. Use when creating PrismaClient, exporting database clients, setting up Prisma in new files, or encountering connection...
Teach middleware.ts to proxy.ts migration in Next.js 16. Use when migrating middleware, encountering middleware errors, or implementing request proxying.
Review React 19 performance patterns including memoization, re-renders, and bundle size. Use when reviewing performance or optimization.
Teaches Server Actions in React 19 for form handling and data mutations. Use when implementing forms, mutations, or server-side logic. Server Actions are async functions marked with 'use server'.
Migrate from Vitest 2.x/3.x to 4.x with pool options, coverage config, workspace to projects, and browser mode updates. Use when upgrading Vitest versions or encountering deprecated patterns.
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