• Overview
• Development
• Project Structure
• Key Components
• License
• Learn More
• Acknowledgments

Feature flags help teams deploy safely, but often become technical debt when forgotten. This ESLint plugin solves that by:

• Finding expired flags that should be removed
• Preventing undefined flags to avoid typos and mistakes
• Automating cleanup with configurable strategies

Common issues this plugin addresses:

• Dead flags bloating the codebase
• Stale flags creating ambiguity
• Hidden logic behind flags where it doesn't belong
• Lack of clear ownership of flags across teams

👉 See the example project for a quick demo.

# Install dependencies
pnpm install

# Build all packages
pnpm build

# Development mode
pnpm dev

# Run tests
pnpm test

# Check code quality
pnpm lint
pnpm format

This is a monorepo built with Turborepo:

eslint-plugin-feature-flags/
├── apps/
│   └── eslint-plugin/  # Main ESLint plugin package
├── packages/
│   ├── types/          # TypeScript type definitions
│   └── core/           # Shared utilities
├── examples/
│   └── test-project/   # Example implementation

• 🔍 ESLint Plugin - The main plugin package
• 🧩 Core - Shared utilities and logic
• 📝 Types - TypeScript definitions
• 🧪 Example Project - Working example

This project is MIT licensed - see the LICENSE file for details.

Resources on feature flag best practices:

• Effective Feature Flag Management - The article that inspired this plugin
• ESLint Plugin Documentation - Full plugin details and examples

Special thanks to Kevin Marques for the idea that sparked this project, and to all contributors who help make it better!

Built with Turborepo ⚡️