nextjs

Plugin nextjs from marketplace szum-tech in JanSzewczyk/claude-plugins. Commands read from the repo's manifest — 3 days ago.

Skills (10)

• api-test

  Test Next.js Route Handlers and API endpoints using Playwright for real HTTP requests. Use when testing API endpoints, route handlers, or backend integrations.

• devlogs

  Analyze a dev-session log file (tmp/app.log) written by the LogLayer + Pino logger in a Next.js project using the structured-logging skill's conventions. Finds missing correlation context (requestId/module/userId), sensitive-data leaks that slipped past redaction, structural/readability problems, an

• error-handling

  Comprehensive error handling for Next.js applications — use whenever adding or fixing error handling, building database or service layer operations, writing server actions, or making an app production-ready. Covers ServiceError (typed error contract for any external service: DB, API, network), tuple

• generate-feature-package

  Scaffold a new feature domain package under features/<name>/ in this project, following the feature-architecture spec. Use whenever the user wants to create/start/bootstrap a new feature, domain, module, or slice — e.g. "create a feature for invoices", "scaffold a new domain", "/generate-feature-pac

• lighthouse-audit

  Automated Lighthouse audit for Next.js apps. Builds the production app, runs @lhci/cli across key URLs, scores all five categories, and produces a prioritized fix plan mapped to concrete Next.js code changes.

• performance-optimization

  Performance optimization patterns for Next.js applications. Covers bundle analysis, React rendering optimization, database query optimization, Core Web Vitals, image optimization, and caching strategies.

• server-actions

  Create Next.js Server Actions in TypeScript with a typed result contract, Zod validation, auth guards, error handling, and React integration. Use this skill whenever writing or modifying Server Actions in a Next.js App Router project — form submissions, data mutations, CRUD operations, auth-gated ac

• structured-logging

  Structured logging patterns with LogLayer + Pino for Next.js applications. Covers log levels, context enrichment, child loggers, and production best practices.

• t3-env-validation

  Type-safe environment variable validation with @t3-oss/env-nextjs and Zod. Build-time validation ensures all required env vars are present and correctly typed.

• toast-notifications

  Send a one-shot toast/flash message from a Next.js (App Router) Server Action that appears on the next render — surviving redirect() — via a short-lived cookie the next render reads, fires once, and clears. Library-agnostic plumbing (sonner, react-hot-toast, any toast UI); bundles ready-to-copy file

Subagents (4)

• code-reviewer

  Comprehensive code review for Next.js/React/TypeScript code. Use proactively after completing logical chunks of implementation. Reviews recent code changes for quality, performance, type safety, security, and pattern compliance.

• nextjs-backend-engineer

  Implement backend logic for Next.js applications including server actions, route handlers, API endpoints, database operations, and authentication flows. Use proactively after completing backend implementations.

• performance-analyzer

  Analyze application performance, optimize bundle size, improve React rendering efficiency, and debug slow queries. Use proactively when performance issues are suspected or before deploying major features.

• testing-strategist

  Plan test strategies, analyze test coverage, and decide which types of tests to write. Use proactively after implementing features to ensure proper test coverage.

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