Frontend

Web scraping templates, scripts, and patterns for documentation and content collection using Playwright, BeautifulSoup, and Scrapy. Includes rate limiting, error handling, and extraction patterns. Use when scraping documentation, collecting web content, extracting structured data, building RAG knowledge bases, harvesting articles, crawling websites, or when user mentions web scraping, documentation collection, content extraction, Playwright scraping, BeautifulSoup parsing, or Scrapy spiders.

Master TypeScript's type system for bulletproof JavaScript applications. Expert in advanced types, generics, and type-safe patterns. Activate for TypeScript development, type system design, or JavaScript migration.

Select appropriate Claude model (Opus 4.5, Sonnet, Haiku) for agents, commands, or Task tool invocations based on task complexity, reasoning depth, and cost/speed requirements.

Comprehensive reference guide for Python type hints, static type checking with mypy, modern type annotation patterns (PEP 484, 585, 604, 612, 613), and type hint best practices for Python 3.9+. Use during code reviews to ensure proper type annotation usage, evaluate mypy configuration, and identify type hint anti-patterns.

Next.js 16 with Turbopack, Cache Components, and proxy.ts. Use for bootstrapping, migrating, and building with App Router and React 19.

Modern React framework for building full-stack web applications with App Router, Server Components, and optimized performance

Create production-ready GitHub Actions workflows for automated testing, building, and deploying applications. Use when setting up CI/CD with GitHub Actions, automating development workflows, or creating reusable workflow templates.

Advanced Tailwind CSS expertise for generating production-ready React components with inline Tailwind CSS, designing modern UI patterns, teaching advanced concepts, and optimizing Tailwind configurations. Use when building React/Next.js applications needing modern component design, responsive layouts, theme customization, performance optimization, or advanced styling patterns.

Vitest configuration template and validation logic for test configuration. Standards differ by package type - use package-type specific configs (react-app, react-library, node-library, node-service, contracts, database, api, integration). Use factory pattern for React packages that need vite.config.ts merging.

Harness CD (Continuous Delivery) for Kubernetes, Helm, Terraform, ECS, and serverless deployments with GitOps, approval gates, rollback strategies, and multi-environment promotion

Validate inputs and preconditions before work begins using symmetric validation across layers, allowlist thinking, and contextual business rules with auditability. Use this skill when writing input validation, form handling, API request validation, or domain logic checks. Applies to all boundary validation requiring structured error responses, edge-case coverage, sanitization, escaping, and contract tests ensuring consistent validation across clients, APIs, background jobs, and CLIs.

Frontend React hooks for AI-powered chat interfaces, completions, and streaming UIs with Vercel AI SDK v5.Includes useChat, useCompletion, and useObject hooks for building interactive AI applications.Use when: building React chat interfaces, implementing AI completions in UI, streaming AI responses to frontend,handling chat message state, building Next.js AI apps, managing file attachments with AI, or encounteringerrors like "useChat failed to parse stream", "useChat no response", unclosed streams, or streaming issues.Keywords: ai sdk ui, useChat hook, useCompletion hook, useObject hook, react ai chat, ai chat interface,streaming ai ui, nextjs ai chat, vercel ai ui, react streaming, ai sdk react, chat message state,ai file attachments, message persistence, useChat error, streaming failed ui, parse stream error,useChat no response, react ai hooks, nextjs app router ai, nextjs pages router ai

This skill should be used when the user asks about "prompt_toolkit Style", "styling", "colors", "formatted text", "HTML text", "ANSI", "FormattedText", "pygments", "syntax highlighting", "themes", or needs to style text and UI elements in prompt_toolkit applications.

Verify visual and structural parity between XHTML chapters and POD PDF files. Use to ensure print edition matches digital EPUB layout.

Analyze and replicate website UI/animations. Use when asked to clone, replicate, or analyze a website's visual implementation.

Use when bootstrapping C3 documentation for any project - guides through Socratic discovery and delegates to layer skills for document creation

Update and maintain Memory Bank files (activeContext, progress, decisionLog).LOAD THIS SKILL WHEN: Task completed | session ending | User says "記錄進度", "更新 memory" | before git commit | context needs saving.FILES: activeContext.md (current focus), progress.md (done/doing/next), decisionLog.md (decisions).

Generates React component boilerplate following DigitalVisionWorks conventions. Use when creating new components, sections, or UI elements. Triggers on component creation requests, new feature implementations, or scaffolding needs.

Builds LLM-powered applications with LangChain.js for chat, agents, and RAG. Use when creating AI applications with chains, memory, tools, and retrieval-augmented generation in JavaScript.

React 18+ development patterns including components, hooks, state management, API integration, and accessibility. Use when: (1) building React components, (2) designing user interfaces, (3) implementing state management, (4) writing frontend tests.