Rules
31 rules available in the Claude directory
Expo React Native JavaScript Best Practices: Clean Code, Performance & Optimization Guide
Master Expo React Native development with proven JavaScript best practices for readable code, efficient performance, modular components, and seamless UI styling to build high-quality mobile apps.
Headless Browser Automation Expert
Advanced prompt for scraping JavaScript-rendered sites using Playwright and Selenium in Claude Code CLI.
Senior Async Developer
Comprehensive system prompt for developing robust, scalable asynchronous code with best practices tailored for Claude Code CLI.
Senior Standard.js Developer
Comprehensive system prompt for writing JavaScript code that strictly adheres to the Standard.js style guide and best practices.
Senior Redux Developer
Comprehensive system prompt for building and maintaining scalable Redux applications with best practices.
Expert Browser Web API Developer
Comprehensive system prompt for developing robust, standards-compliant Browser Web APIs with JavaScript.
Senior Alpine.js Developer
Comprehensive system prompt for developing robust, interactive UIs using Alpine.js with best practices and architecture.
Frontend Performance Optimizer
Creative prompt for optimizing JavaScript in frontend apps, focusing on performance, bundle size, and rendering efficiency.
Senior JavaScript Developer
Comprehensive system prompt for expert JavaScript development using modern ES6+ standards and best practices.
AI-Powered Jest Test Generator
Automatically generates comprehensive Jest unit tests for JavaScript/TypeScript codebases using Claude's deep code reasoning.
JS Testing Ninja
Master unit, integration, and E2E testing for JavaScript with Jest, Vitest, and Playwright, enhanced by Claude's reasoning.
Node.js API Beast
Build scalable Node.js APIs with Express/TypeScript, security, and deployment best practices for Claude Code CLI.
PWA Mastery Engineer
Develop Progressive Web Apps with service workers, offline sync, and manifest optimization using vanilla JS or frameworks.
Node.js API Scaler
Build scalable, secure Node.js APIs with Fastify, TypeScript, authentication, and deployment best practices.
Playwright E2E Testing Pro
Expert in crafting reliable, maintainable Playwright end-to-end tests using TypeScript and best practices.
TypeScript Design Patterns Pro
Implements advanced TypeScript patterns like discriminated unions, branded types, modules, and generics for robust, type-safe JavaScript applications.
Node.js API Scalability Guru
Designs scalable, secure Node.js APIs with Express/Fastify, including middleware patterns, database integration, and deployment strategies for production.
Web Dev Expert for Claude Code
Structured assistant for JavaScript web development with deep code reviews, planning, security checks, and operational awareness optimized for Claude's long context and reasoning.
Advanced JS Performance Guru
Prompt for profiling, optimizing, and debugging JavaScript performance in browsers/Node, leveraging Claude's long context for bundle analysis and Web Vitals.
JS Testing & TDD Pro
Comprehensive prompt for Test-Driven Development in JavaScript with Jest, Vitest, React Testing Library, and Playwright E2E, using Claude's reasoning for edge cases.
Node.js Express API Builder
Prompt for architecting secure, scalable Node.js APIs with Express, TypeScript, middleware, and database integration using Claude's tool use for validation.
React/Next.js Front-End Mastery
Adapted expert prompt for building production-ready React and Next.js apps with TailwindCSS and accessibility, optimized for Claude's reasoning and long context.
PWA & Service Worker Pro
Rules for crafting high-performance Progressive Web Apps with JavaScript Service Workers, offline capabilities, and caching using Claude's analysis.
TypeScript Enterprise Patterns
Advanced TypeScript patterns and tooling for building maintainable, type-safe JavaScript applications at scale with Claude's deep reasoning.