UserScript Project Template

A modern, scalable UserScript project template for building large and structured TypeScript projects for Tampermonkey or Greasemonkey. Originally designed for the Ingress community, but adaptable for any web-based project.

✨ Features

• 🔧 Modern TypeScript with strict type checking
• 🚀 Vite for fast builds and development
• 📦 Modular Architecture with utilities and event system
• 🎯 Environment-specific configurations (dev/prod)
• 🧹 ESLint + Prettier for code quality
• 💾 Storage utilities for persistent data
• 🎨 DOM utilities for easier manipulation
• 📡 Event system for modular communication
• 🔒 TypeScript definitions for UserScript APIs

🚀 Quick Start

1. Clone or use this template:

   git clone https://github.com/JosunLP/UserScriptProjectTemplate.git my-userscript
   cd my-userscript
   

2. Install dependencies:

   npm install
   

3. Configure your script:

   • Edit header.config.json to set your target domains
   • Update package.json with your script details

4. Start development:

   npm run dev
   

5. Build for production:

   npm run build:prod
   

📁 Project Structure

src/
├── index.ts          # Main application entry point
├── types/            # TypeScript definitions
│   └── userscript.d.ts
├── utils/            # Utility functions
│   ├── storage.ts    # Persistent storage helpers
│   ├── dom.ts        # DOM manipulation utilities
│   └── events.ts     # Event system
├── core/             # Core application logic
└── modules/          # Feature modules

🛠️ Available Scripts

• npm run dev - Build with watch mode for development
• npm run build - Build for production
• npm run build:prod - Build for production (explicit)
• npm run lint - Run ESLint
• npm run lint:fix - Fix ESLint issues
• npm run format - Format code with Prettier
• npm run type-check - Run TypeScript type checking
• npm run clean - Clean dist folder

⚙️ Configuration

Header Configuration

Edit header.config.json to configure your UserScript metadata:

{
  "environments": {
    "development": {
      "includes": ["http://localhost:*/*"],
      "grants": ["GM_setValue", "GM_getValue", "GM_log"]
    },
    "production": {
      "includes": ["https://your-domain.com/*"],
      "grants": ["GM_setValue", "GM_getValue"]
    }
  }
}

Environment Variables

The build system automatically detects the environment:

• NODE_ENV=development for development builds
• NODE_ENV=production for production builds

🧰 Utilities

Storage

import { Storage } from '@/utils/storage';

// Store data
Storage.set('key', { some: 'data' });

// Retrieve data
const data = Storage.get('key', defaultValue);

// Check existence
if (Storage.has('key')) {
  // Key exists
}

DOM Utilities

import { DOMUtils } from '@/utils/dom';

// Wait for element
const element = await DOMUtils.waitForElement('.my-selector');

// Add styles
DOMUtils.addStyles(`
  .my-class { color: red; }
`);

// Create element
const button = DOMUtils.createElement('button', {
  textContent: 'Click me',
  onclick: () => console.log('Clicked!')
});

Events

import { EventEmitter } from '@/utils/events';

interface MyEvents {
  userAction: { userId: string };
  dataLoaded: { count: number };
}

const emitter = new EventEmitter<MyEvents>();

// Listen for events
emitter.on('userAction', ({ userId }) => {
  console.log(`User ${userId} performed an action`);
});

// Emit events
emitter.emit('userAction', { userId: '123' });

🎯 Extending the Template

1. Add new modules in src/modules/
2. Register modules in your main App class
3. Use the event system for module communication
4. Add utilities in src/utils/ for reusable functionality

Example module:

// src/modules/example.ts
import { EventEmitter } from '@/utils/events';
import { Storage } from '@/utils/storage';

export class ExampleModule extends EventEmitter {
  initialize() {
    console.log('Example module initialized');
    // Your module logic here
  }
}

🔧 Development Tips

• Use console.log() freely - it's enabled in UserScripts
• Test in development mode with localhost includes
• Use TypeScript strict mode for better code quality
• Leverage the storage utilities for persistent data
• Use the event system for loose coupling between modules

📝 License

MIT License - see LICENSE file for details.

🤝 Contributing

1. Fork the repository
2. Create a feature branch
3. Make your changes
4. Run tests and linting
5. Submit a pull request

💡 Originally for Ingress

This template was originally designed for the Ingress community but is versatile enough for any web-based UserScript project. The modular architecture makes it easy to build complex scripts while maintaining code quality and organization.