Chrome extension that automatically closes old duplicate tabs when you open the same URL again, keeping only the latest one.

• Automatically closes existing tabs when you open a duplicate URL
• Works across all browser windows
• Keeps only the most recently opened tab
• Lightweight background service with minimal resource usage

Install from Chrome Web Store

• Node.js 20 or higher
• pnpm 10.17.1 or higher

# Install dependencies
pnpm install

# Start development mode with watch
pnpm dev

# Build for production
pnpm build

# Type check
pnpm typecheck

# Format code
pnpm format

# Create release package
pnpm package

• Build Tool: Vite 7 with @crxjs/vite-plugin
• Language: TypeScript 5
• Package Manager: pnpm
• Git Hooks: lefthook (auto-formatting on commit)

uniqtab/
├── src/
│   ├── background.ts    # Background service worker
│   └── manifest.ts      # Chrome extension manifest
├── dist/                # Build output
└── package.zip          # Release package

MIT