Skill UI

A comprehensive guide for implementing robust testing strategies in modern JavaScript and TypeScript applications. This resource covers best practices for unit testing, integration testing, end-to-end testing (E2E), and implementing Test-Driven Development (TDD). It is essential for setting up reliable test infrastructure, mocking dependencies, and integrating continuous testing into CI/CD pipelines for frameworks like React and Vue.

Guides TypeScript/JavaScript developers on Linear SDK patterns for reusable clients, pagination, type-safe errors, batching, and caching so they can build optimized issue-management workflows with the Linear API.

This comprehensive guide covers mastering modern JavaScript features (ES6+), advanced functional programming patterns, and industry best practices. It provides guidance on refactoring legacy code, optimizing performance, managing asynchronous operations, and building highly maintainable, scalable web applications.

Guides writing JavaScript inside n8n Code nodes, covering modes, data access patterns, webhook structure, return formats, helper utilities, and best practices for HTTP requests and DateTime handling.

Automatically scans code for reflected, stored, and DOM-based XSS risks across HTML, JavaScript, CSS, and URLs, providing reports and safe proof-of-concept payloads for use in reviews, audits, or pre-deployment checks.

Guides Spring Boot 3.x engineers through configuration scaffolds, REST controllers, Spring Security 6 authentication flows, Spring Data JPA repositories, and reactive WebFlux endpoints, making it easier to build microservices and Java REST APIs.

Guides Java engineers through Spring Boot backend architecture, REST API design, service layering, repository patterns, caching, async handlers, logging, middleware, and resilience practices for scalable production services.

Checklist covering Spring Security best practices for authentication, authorization, validation, CSRF, secrets, headers, rate limiting, dependency scans, and logging in Java Spring Boot services.

This comprehensive guide assists developers in adopting Test-Driven Development (TDD) practices. It covers generating unit tests for various languages (Python, JS, Java), analyzing test coverage gaps across multiple frameworks (Jest, Pytest, JUnit), and guiding the iterative Red-Green-Refactor workflow. Use this guide when generating stubs, improving test coverage, or adhering to spec-first development methodologies.

Detects TypeScript/JavaScript circular imports, visualizes dependency cycles with tools like madge, and offers strategies (shared interfaces, DI, dynamic/type-only imports, barrel restructuring) plus CI checks and ESLint rules for ongoing prevention.

This agent provides deep, practical expertise in TypeScript and JavaScript. It covers complex topics like type-level programming, branded types, conditional types, and advanced performance optimization for large-scale projects. It is ideal for diagnosing complex type errors, optimizing build processes, and managing monorepo configurations, ensuring robust and maintainable codebases.

Comprehensive verification system for Claude Code sessions that runs build, type, lint, test, security, and diff checks before PRs to ensure code quality and compliance across JS/TS and Python projects.