🔍 peer-dependency-checker

Smart dependency compatibility checking before you upgrade

Stop breaking your builds. Check compatibility first.

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🚀 Quick Setup

Add peer dependency checking to any project in one command:

# One command setup - works with npm, yarn, pnpm, or bun
npx peer-dependency-checker setup

# Or install globally first
npm install -g peer-dependency-checker
pdc setup

What this does:

• ✅ Detects your package manager automatically
• ✅ Adds pre/post-install hooks to your package.json
• ✅ Sets up automatic checking on installs
• ✅ Works immediately with zero configuration

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⚡ Installation

# Global install (recommended)
npm install -g peer-dependency-checker

# Or use directly with npx
npx peer-dependency-checker scan

🎯 Usage

# Analyze your project for upgrade opportunities
pdc scan

# Quick scan with minimal output
pdc scan --quick

# Check specific packages before upgrading
pdc check react@19 react-dom@19

# Deep peer dependency analysis  
pdc analyze

# Pre-installation compatibility check
pdc precheck

📖 Examples

Project Health Check

$ pdc scan

🔍 Scanning your project...

📦 Project: my-app
🔧 Package Manager: npm
📋 Dependencies: 15 production, 8 development

📈 OUTDATED PACKAGES
────────────────────────────────────────
react: 18.3.1 → 19.1.0
@types/node: 22.15.21 → 24.0.3

🔗 PEER DEPENDENCY STATUS
────────────────────────────────────────
No peer dependency warnings detected

💡 RECOMMENDATIONS
────────────────────────────────────────
✅ All packages are up to date!

Test Specific Upgrades

$ pdc check react@19 react-dom@19

🧪 Testing 2 package(s)...

✅ react@19
   └── No peer dependencies required

✅ react-dom@19
   └── Peer deps: { react: '^19.1.0' }

🛠️ Commands

Command	Description
pdc scan	Analyze current project for upgrade opportunities
pdc scan --quick	Quick scan with minimal output
pdc check <packages>	Test specific package upgrades
pdc analyze	Deep peer dependency analysis
pdc analyze --brief	Brief analysis with key findings
pdc precheck	Pre-installation compatibility check
pdc setup	One-command setup for external projects

🔧 Configuration

Works out-of-the-box with smart defaults. For custom settings, create .pdcrc.json:

{
  "packageManager": "npm",
  "riskTolerance": "medium",
  "excludePackages": [],
  "outputFormat": "colored"
}

📖 Configuration Guide →

🤝 Contributing

We welcome contributions!

git clone https://github.com/hyperdrift-io/peer-dependency-checker
cd peer-dependency-checker
npm install
npm test

📄 License

MIT © Hyperdrift

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Built with ❤️ by the hyperdrift team