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diffql

v1.0.1

Published

GraphQL schema diff CLI tool

Vulnerabilities

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Links

Git

Maintainers

pranjalbarethpranjalbareth

Keywords

graphqlschemadiffclibreaking-changesschema-checker

Readme

🔍 DiffQL

A blazing-fast CLI tool to detect breaking and non-breaking changes between two GraphQL schemas.

📦 Installation

Install globally via NPM:

npm install -g diffql

🚀 Usage

diffql ./schemas/oldSchema.graphql ./schemas/newSchema.graphql

You can also run directly using Node:

node src/index.js ./schemas/oldSchema.graphql ./schemas/newSchema.graphql

✅ Output Example

🔍 Schema Diff Results:

❌ Breaking: Type 'User' removed
✅ Non-breaking: Type 'Post' added
  • ✅ Green: Non-breaking change (e.g., new types or fields)
  • ❌ Red: Breaking change (e.g., removed types or required fields removed)

📖 Features

  • 🔍 Detect breaking and non-breaking changes
  • 🎨 Color-coded CLI output (tick/cross icons)
  • 🛠 Works on any GraphQL schema file
  • 🔁 Easily integratable into CI/CD

🗺 Roadmap (Coming Soon)

  • 🚫 CI/CD enforcement mode (--fail-on-breaking)
  • ⚙️ Custom rule engine via config file
  • 🕘 Schema version history & timeline
  • 🧠 Smart impact analysis
  • 💻 VSCode extension
  • 🌐 Web-based visual diff tool
  • ☁️ Cloud dashboard + Slack integration

🧪 Testing

We use Jest for tests:

npm run test

👨‍💻 Contributing

Pull requests and ideas are welcome!

  1. Fork the repo
  2. Create a feature branch
  3. Make your changes
  4. Submit a PR

📄 License

MIT License. Use it freely.

🌍 Links