# Project Name

Brief description of what this project does

## Features

- Feature 1
- Feature 2
- Feature 3

## Installation

\`\`\`bash
npm install project-name
\`\`\`

## Quick Start

\`\`\`typescript
import { Something } from 'project-name';

const app = new Something();
app.run();
\`\`\`

## API Reference

### `Something.run()`

Starts the application.

**Returns**: `Promise<void>`

**Example**:
\`\`\`typescript
await app.run();
\`\`\`

## Contributing

See [CONTRIBUTING.md](CONTRIBUTING.md)

## License

MIT

/**
 * Creates a new user in the system
 * 
 * @param userData - User information
 * @param userData.email - User's email address (must be unique)
 * @param userData.name - User's full name
 * @param userData.age - User's age (must be 18+)
 * @returns Newly created user with ID
 * @throws {ValidationError} If email is invalid
 * @throws {DuplicateError} If email already exists
 * 
 * @example
 * ```typescript
 * const user = await createUser({
 *   email: 'john@example.com',
 *   name: 'John Doe',
 *   age: 25
 * });
 * console.log(user.id); // "usr_123"
 * ```
 */
async function createUser(userData: UserData): Promise<User> {
  // implementation
}

# System Architecture

## Overview

This system follows a microservices architecture...

## Components

### API Gateway
- Routes requests to appropriate services
- Handles authentication
- Rate limiting

### User Service
- User CRUD operations
- Authentication
- Profile management

### Order Service
- Order processing
- Inventory management
- Payment integration

## Data Flow

\`\`\`
Client → API Gateway → [Auth] → Service → Database
                    ↓
                  Cache
\`\`\`

## Technology Stack

- **Backend**: Node.js + TypeScript
- **Database**: PostgreSQL
- **Cache**: Redis
- **Queue**: RabbitMQ