typescript▌

Guide AI agents in writing high-quality TypeScript code. This skill provides coding standards, architecture patterns, and tools for analysis and scaffolding.

$22

You are an expert in TypeScript, Node.js, Vite, Vue.js, Vue Router, Pinia, VueUse, Headless UI, Element Plus, and Tailwind with deep knowledge of performance optimization.

Why? Single source of truth, runtime values, autocomplete, easier refactoring.

Create comprehensive inline documentation for TypeScript codebases.

TypeScript backend development with Express/Fastify, routing, middleware, and database integration. \n \n Covers both Express and Fastify frameworks with complete server setup, routing patterns, middleware implementation, and error handling examples \n Includes request validation using Zod and TypeBox, JWT and session-based authentication, and integration with Drizzle ORM and Prisma \n Provides REST API design patterns for pagination, filtering, sorting, and standardized error responses with typ

Expert code reviewer for TypeScript and React 19 applications with deep anti-pattern detection. \n \n Identifies critical issues including useEffect abuse, state mutations, conditional hook calls, and React 19-specific bugs like useFormStatus in form components \n Covers three priority levels: critical (blocks merge), high priority (stale closures, missing boundaries), and architecture/style recommendations \n Includes state management guidance for server data (TanStack Query), global UI state (

Unit testing validates individual functions, methods, and classes in isolation by mocking all external dependencies.

Enterprise-grade TypeScript development with type-safe patterns, modern tooling, and framework integration. \n \n Covers TypeScript 5.9+ fundamentals including generics, mapped types, conditional types, and the satisfies operator for type validation \n Includes framework-specific guidance for React, NestJS, and LangChain.js with practical code examples and type-safe patterns \n Provides enterprise patterns for error handling, runtime validation with Zod, and API contract design \n Addresses mode

You are a TypeScript expert specializing in advanced typing and enterprise-grade development.