NestJS Dynamic Permissions

A flexible and powerful permissions management system for NestJS applications with built-in security features.

Features

Permission Management

• Dynamic role-based access control (RBAC)
• Fine-grained permission control
• Role hierarchy support
• Public routes configuration
• Permission strategy (whitelist/blacklist)

Security Features

• Rate limiting protection
• CORS configuration
• Helmet security headers
• Request validation
• Multiple security templates (Basic, Strict, Enterprise)

Configuration Management

• Multiple configuration templates
• Configuration publishing
• Easy updates and migrations
• TypeScript type definitions
• Environment-specific settings

Error Handling

• Centralized error handling
• Custom exception classes
• Standardized error responses
• Environment-specific error details

Audit & Monitoring

• Audit logging
• Performance monitoring
• Security event tracking
• Detailed logging system

Installation

npm i @brandazm/dynamic-permissions

Quick Start

1. Initialize Configuration

# Initialize with basic configuration
npx nestjs-permissions init

# Or use a specific template
npx nestjs-permissions init -t advanced

2. Module Setup

import { PermissionsModule } from '@brandazm/dynamic-permissions';

@Module({
  imports: [
    PermissionsModule.register()
  ]
})
export class AppModule {}

3. Apply Permissions

import { RequirePermission } from '@brandazm/dynamic-permissions';

@Controller('users')
export class UserController {
  @RequirePermission(['user.read'])
  @Get()
  findAll() {
    return this.userService.findAll();
  }
}

Security Configuration

1. Initialize Security Settings

# Publish security configuration
npx nestjs-permissions publish-security-config

# Use strict security template
npx nestjs-permissions publish-security-config -t strict

2. Available Security Templates

• Basic: Essential security features
• Strict: Enhanced security with stricter settings
• Enterprise: Full-featured security for enterprise applications

3. Security Features

const securityConfig = {
  rateLimit: {
    enabled: true,
    windowMs: 15 * 60 * 1000,
    max: 100
  },
  cors: {
    enabled: true,
    allowedOrigins: ['https://your-domain.com'],
    allowedMethods: ['GET', 'POST'],
    allowedHeaders: ['Content-Type', 'Authorization']
  },
  helmet: {
    enabled: true,
    contentSecurityPolicy: true,
    // ... other security headers
  },
  requestValidation: {
    maxBodySize: 10 * 1024 * 1024,
    requireJsonContent: true,
    validateContentType: true
  }
};

CLI Commands

Configuration Management

# Initialize project
npx nestjs-permissions init

# Publish configuration
npx nestjs-permissions publish-config

# Generate migration
npx nestjs-permissions generate-migration

# Validate configuration
npx nestjs-permissions validate-config

Security Management

# Publish security configuration
npx nestjs-permissions publish-security-config

# Update security settings
npx nestjs-permissions update-security-config

# List security templates
npx nestjs-permissions list-security-templates

Documentation

• API Reference
• Usage Examples
• Best Practices
• Performance Tuning
• Troubleshooting

Error Handling

The package includes comprehensive error handling with custom exceptions:

• PermissionDeniedException
• InvalidPermissionException
• RoleNotFoundException
• ConfigurationException
• DatabaseException
• MigrationException
• CacheException
• ValidationException

Contributing

1. Fork the repository
2. Create your feature branch (git checkout -b feature/amazing-feature)
3. Commit your changes (git commit -m 'Add some amazing feature')
4. Push to the branch (git push origin feature/amazing-feature)
5. Open a Pull Request

License

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

Support

For support and questions, please:

• Check the Troubleshooting Guide
• Open an issue on GitHub
• Join our Discord community

Acknowledgments

• NestJS team for the amazing framework
• Contributors who helped shape this package
• Community feedback and support