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TypeScript Code Convention Claude Skill: A Complete Guide to Modern Full-Stack Development

Learn how to use the typescript code convention Claude skill. Complete guide with installation instructions and examples.

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Guide

SKILL.md

Introduction: Elevating Your TypeScript Development with AI

In the rapidly evolving landscape of modern web development, maintaining consistent code conventions across TypeScript, React, and Next.js projects can be challenging. The TypeScript Code Convention Claude Skill is a powerful AI assistant specifically designed to help developers write cleaner, more maintainable code across the entire modern JavaScript ecosystem.

This Claude Skill brings expert-level knowledge of TypeScript, Node.js, Next.js App Router, React, Expo, tRPC, Shadcn UI, Radix UI, and Tailwind CSS directly into your development workflow. Whether you're building a full-stack web application, a mobile app with Expo, or implementing a type-safe API with tRPC, this skill ensures your code follows industry best practices and modern conventions.

Why This Skill Is Essential

  • Consistency: Maintains uniform code style across your entire tech stack
  • Best Practices: Implements current industry standards for TypeScript and React development
  • Time-Saving: Reduces decision fatigue around code structure and conventions
  • Learning Tool: Helps developers understand modern patterns in Next.js, tRPC, and component libraries
  • Production-Ready: Generates code that's optimized for scalability and maintainability

Installation: Getting Started with the TypeScript Code Convention Skill

Using with Claude Desktop (MCP)

The TypeScript Code Convention skill can be integrated into your Claude Desktop application through the Model Context Protocol (MCP). Here's how to set it up:

  1. Access the Skill Repository

    Visit the PatrickJS/awesome-cursorrules repository on GitHub to access the skill configuration.

  2. Configure Your Claude Desktop

    Add the skill to your Claude Desktop configuration file (typically located at ~/Library/Application Support/Claude/claude_desktop_config.json on macOS or %APPDATA%\Claude\claude_desktop_config.json on Windows):

    {
  "mcpServers": {
    "typescript-conventions": {
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-filesystem"],
      "env": {
        "SKILL_NAME": "typescript-code-convention"
      }
    }
  }
}

  3. Restart Claude Desktop

    Close and reopen Claude Desktop to load the new skill configuration.

Using with Claude API or Web Interface

For Claude API users or those using the web interface, you can activate this skill by including the skill context in your system prompt:

You are an expert in TypeScript, Node.js, Next.js App Router, React, Expo, 
tRPC, Shadcn UI, Radix UI, and Tailwind. Follow modern code conventions 
and best practices for these technologies.

Verification

To verify the skill is active, ask Claude a TypeScript-related question and observe whether it provides answers aligned with modern Next.js App Router patterns, tRPC conventions, and Tailwind CSS best practices.

Use Cases: Where This Skill Shines

Use Case 1: Building Type-Safe API Routes with Next.js App Router and tRPC

Scenario: You need to create a type-safe API endpoint for a user management system in a Next.js 14 application using the App Router and tRPC.

Prompt:

Create a tRPC router for user management with CRUD operations. 
Include proper TypeScript types, error handling, and integrate 
it with Next.js App Router. Use Zod for validation.

What the Skill Delivers:

  • Properly structured tRPC router with TypeScript generics
  • Zod schemas for runtime validation
  • Next.js App Router integration patterns
  • Type-safe client-side hooks
  • Error handling following tRPC conventions
  • Proper separation of concerns between router, procedures, and context

Example Output Structure:

// server/routers/user.ts - tRPC router with full type safety
// app/api/trpc/[trpc]/route.ts - Next.js App Router integration
// lib/trpc/client.ts - Type-safe client configuration
// components/UserList.tsx - React component using tRPC hooks

Use Case 2: Creating Accessible UI Components with Shadcn UI and Radix UI

Scenario: You need to build a complex form component with proper accessibility, validation, and styling using Shadcn UI, Radix UI, and Tailwind CSS.

Prompt:

Create a multi-step form component for user registration using Shadcn UI 
and Radix UI. Include form validation with react-hook-form and Zod, 
proper accessibility attributes, and Tailwind CSS styling. The form 
should have steps for: basic info, address, and preferences.

What the Skill Delivers:

  • Properly composed Radix UI primitives
  • Shadcn UI component patterns
  • Accessible form markup with ARIA attributes
  • Type-safe form validation with Zod
  • React Hook Form integration
  • Responsive Tailwind CSS classes following utility-first principles
  • Proper TypeScript interfaces for form data

Benefits:

  • WCAG-compliant components out of the box
  • Consistent design system implementation
  • Type safety from form input to submission
  • Reusable component architecture

Use Case 3: Cross-Platform Mobile Development with Expo and React Native

Scenario: You're building a cross-platform mobile app with Expo and need to implement a feature that shares code with your Next.js web application.

Prompt:

Create a shared authentication hook that works in both Expo (React Native) 
and Next.js. Use TypeScript for type safety and implement proper error 
handling. Include secure token storage for mobile and web.

What the Skill Delivers:

  • Platform-agnostic TypeScript interfaces
  • Conditional imports for platform-specific code
  • Secure storage implementation (AsyncStorage for mobile, cookies for web)
  • Shared business logic with platform-specific adapters
  • Proper TypeScript generics for reusability
  • Error handling patterns that work across platforms
  • React hooks following modern conventions

Code Patterns Demonstrated:

// Shared types and interfaces
// Platform detection utilities
// Unified API client
// Custom hooks with platform-specific implementations
// Proper dependency injection for testability

Technical Details: How the TypeScript Code Convention Skill Works

Core Technologies Covered

The TypeScript Code Convention skill is built on deep expertise in the modern JavaScript ecosystem:

  1. TypeScript: Emphasizes strict type safety, proper use of generics, utility types, and advanced TypeScript features like conditional types and template literal types.

  2. Next.js App Router: Focuses on the latest App Router conventions including Server Components, Server Actions, streaming, and the new metadata API.

  3. React: Implements modern React patterns including hooks, composition, proper component architecture, and performance optimization techniques.

  4. tRPC: Ensures end-to-end type safety between client and server, proper router organization, and efficient data fetching patterns.

  5. Styling Libraries: Combines Tailwind CSS utility-first approach with Shadcn UI and Radix UI for accessible, composable components.

  6. Expo: Applies React Native best practices with TypeScript, proper navigation patterns, and cross-platform code organization.

Convention Principles

The skill enforces several key principles:

  • Type Safety First: Every function, component, and API should have explicit TypeScript types
  • Composition Over Inheritance: Favor composable functions and components
  • Server-First: Leverage Next.js Server Components and Server Actions where appropriate
  • Accessibility: Include proper ARIA attributes and semantic HTML
  • Performance: Implement code-splitting, lazy loading, and optimization patterns
  • Consistency: Follow established naming conventions and file organization patterns

AI Tools Integration

As a Claude Skill utilizing MCP (Model Context Protocol), this tool seamlessly integrates into your AI-assisted development workflow. It provides:

  • Context-aware code suggestions based on your project structure
  • Real-time best practice recommendations
  • Refactoring suggestions aligned with modern conventions
  • Documentation generation following TypeScript standards
  • Code review capabilities focusing on type safety and conventions

Conclusion

The TypeScript Code Convention Claude Skill is an indispensable AI tool for modern full-stack developers working with TypeScript, React, Next.js, and the broader JavaScript ecosystem. By providing expert-level guidance on code conventions, architectural patterns, and best practices, this skill accelerates development while ensuring code quality and maintainability.

Whether you're building a complex web application with Next.js and tRPC, creating accessible UI components with Shadcn UI and Radix UI, or developing cross-platform mobile apps with Expo, this Claude Skill serves as your expert pair programmer—always ready to guide you toward production-ready, type-safe code.

Getting Started Today

  1. Install the skill using the MCP configuration above
  2. Start with simple prompts to familiarize yourself with its capabilities
  3. Gradually incorporate it into your daily development workflow
  4. Leverage it for code reviews and refactoring existing projects

The future of development is AI-assisted, and with tools like the TypeScript Code Convention Claude Skill, you can write better code faster while continuously learning modern best practices. Embrace this powerful AI tool and elevate your TypeScript development to new heights.

Keywords: Claude Skill, MCP, AI Tools, typescript code convention, Next.js, React, tRPC, Shadcn UI, Radix UI, Tailwind CSS, TypeScript best practices, full-stack development, Model Context Protocol