Modern NestJS backend built with TypeScript, featuring enterprise-grade architecture and comprehensive tooling.

• NestJS 11 with TypeScript for scalable server-side applications
• Express.js as the underlying HTTP server
• SWC for ultra-fast compilation and bundling
• Jest for comprehensive testing (unit, e2e, coverage)
• ESLint with TypeScript support for code quality
• Hot Reload for development efficiency
• Modular Architecture with dependency injection
• Built-in Validation and transformation pipes
• Guards and Interceptors for security and logging
• Health Checks and monitoring endpoints

1. Install dependencies:

yarn install

2. Start development server:

yarn start:dev

3. Build for production:

yarn build
yarn start:prod

# Unit tests
yarn test

# E2E tests
yarn test:e2e

# Test coverage
yarn test:cov

# Watch mode
yarn test:watch

src/
├── app.controller.ts      # Main application controller
├── app.module.ts          # Root module
├── app.service.ts         # Main application service
├── config/                # Configuration files
└── main.ts               # Application entry point

• yarn start - Start the application
• yarn start:dev - Start in development mode with hot reload
• yarn start:debug - Start in debug mode
• yarn start:prod - Start in production mode
• yarn build - Build the application
• yarn lint - Run ESLint
• yarn test - Run unit tests
• yarn test:e2e - Run e2e tests
• yarn test:cov - Run tests with coverage

• Modules: Organize code into feature modules
• Services: Business logic in injectable services
• Controllers: Handle HTTP requests and responses
• Guards: Authentication and authorization
• Interceptors: Transform data and handle side effects
• Pipes: Validation and transformation
• Filters: Exception handling

# Build Docker image
docker build -t b4f1 .

# Run container
docker run -p 3002:3002 b4f1

# Build application
yarn build

# Start production server
yarn start:prod

• NestJS Documentation
• TypeScript Documentation
• Jest Testing Framework
• ESLint Configuration

• B4F - Express.js backend (port 3001)
• Backend - FastAPI Python backend (port 8000)
• Frontend - React + Material-UI (port 3000)
• Frontend1 - React + Tailwind + DaisyUI (port 5173)

MIT License - see LICENSE file for details.