Does it support TypeScript projects?

Yes, it includes commands to check TypeScript compilation status as part of the initial project health phase to ensure the code is type-safe.

Does this skill check for security vulnerabilities?

Yes, it specifically audits for NoSQL injection, XSS via dangerouslySetInnerHTML, insecure JWT storage, and hardcoded secrets.

Will it help me refactor large, messy files?

Yes, it automatically flags 'god files' over 500 lines and complex functions, providing recommendations on how to split them into smaller, maintainable modules.

Can it identify performance issues in my database queries?

Absolutely. It checks for N+1 queries, missing indexes, and suggests using .lean() for read-only Mongoose operations to reduce memory overhead.

How does the review workflow work?

It uses a three-phase approach: first assessing project health (build/tests), then detecting the scope of change, and finally reviewing by priority levels from blockers to suggestions.

MERN Code Reviewer

Name: MERN Code Reviewer
Author: 9tykeshav

by9tykeshav

•

Security & Testing

Performs comprehensive security, performance, and architecture audits for MongoDB, Express, React, and Node.js projects.

The MERN Code Reviewer skill transforms Claude into a specialized senior architect for full-stack JavaScript applications. It follows a structured, priority-based workflow—starting with project health and build status before diving deep into security vulnerabilities like NoSQL injection, performance bottlenecks like N+1 queries, and maintainability issues like 'god files.' By combining general code quality principles with MERN-specific best practices, it provides actionable reports that categorize issues from critical blockers to architectural suggestions, ensuring your codebase remains production-ready and scalable.

Key Features

01Automated project health checks including build status and file size analysis

02Performance optimization for Mongoose queries and React component re-rendering

03Maintainability enforcement by identifying overly complex functions and massive files

04Deep security auditing for NoSQL injection, JWT handling, and XSS vulnerabilities

054 GitHub stars

06Structured reporting with prioritized fixes for blockers, security, and best practices

Use Cases

01Reviewing a Pull Request for a feature built with the MERN stack

02Conducting a security and performance audit on an existing legacy codebase

03Ensuring a project is ready for production deployment by checking for blockers and vulnerabilities

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add 9tykeshav/mern-ninja-cc code-reviewer

For use in Claude.ai and ChatGPT

Download Skill