In the world of modern React applications, change has become the norm. New features, refactors, and rapid feature sprints are part of everyday development. Within professional Front-end Development projects, maintaining long-term code quality requires measurable standards, architectural discipline, and automated validation processes.

This is exactly where React Doctor comes in — an innovative CLI tool that allows you to automatically audit your entire React codebase and evaluate its quality with a single command.

React Doctor scans your project, analyzes more than 60 quality rules, and returns a score from 0 to 100, along with a list of actionable recommendations to improve your codebase health.

🚀 Fast Diagnosis and a Reliable Code Health Metric

React Doctor is an open-source tool that automatically evaluates the health of your React application. Think of it as unit tests for architecture and quality — instead of verifying functionality, it focuses on architectural quality, performance, security, and best practices.

Score interpretation:

  • ≤ 50 → Critical issues
  • 50–75 → Needs improvement
  • ≥ 75 → Good code health

This score can become part of your CI/CD process, for example integrated directly into a GitHub Actions pipeline.

⚙️ Installation and Basic Usage

React Doctor works as a CLI tool that you run from the root directory of your project.

# Scan the project
npx -y react-doctor@latest .

Add –verbose to get a detailed report including file paths and line numbers:

npx -y react-doctor@latest . --verbose

React Doctor combines linting, static analysis, and architectural auditing into a single tool.

🔧 1. Correctness and Security

  • Detects hardcoded secrets in client-side code
  • Identifies suspicious patterns such as eval() usage
  • Warns about common React anti-patterns

⚡ 2. Performance and Usage Patterns

  • Evaluates misuse of hooks, such as unnecessary useEffect
  • Flags patterns that may cause excessive re-renders
  • Suggests refactors optimized for bundle size

🧱 3. Architecture and Structure

  • Identifies overly large components and low-cohesion modules
  • Detects improper imports (e.g., importing full lodash instead of modular imports)
  • Analyzes dead code (unused files, unexported functions/types)

GitHub Actions Integration

React Doctor can be integrated into GitHub Actions to automatically evaluate pull requests:

steps:
  - uses: actions/checkout@v5
    with:
      fetch-depth: 0
  - uses: millionco/react-doctor@main
    with:
      diff: main
      github-token: ${{ secrets.GITHUB_TOKEN }}

This allows teams to enforce quality standards directly at the PR level and catch architectural regressions before they reach production. When combined with a structured Test Automation strategy, tools like React Doctor become part of a broader quality engineering framework that protects frontend architecture at scale.

🧠 AI-Powered Integrations

React Doctor doesn’t just analyze code — it can integrate with coding agents such as Gemini CLI or Claude Code, enabling automated fixes for detected issues. This significantly accelerates the refactoring process and helps maintain a consistently clean codebase.

When Should You Use React Doctor?

React Doctor is an ideal tool if:

  • You maintain a large or rapidly evolving React project
  • You want to enforce quality standards across your team
  • You are looking for automated architectural audits
  • You care about CI/CD workflow integration

Thanks to its simplicity and comprehensive diagnostic capabilities, React Doctor is worth considering as a core part of your code quality assurance process in any serious React project.