CLI Commands

TL;DR

• nest new scaffolds project. nest generate (or nest g) creates modules/services/controllers.
• Everything is modular: Module → Controller → Service pattern.
• Use --flat to skip folder creation, --no-spec to skip test files.

Essential Commands

# Create project
nest new my-app

# Generate (shorthand: nest g)
nest g module   users        # Create module
nest g controller users      # Create controller
nest g service  users        # Create service
nest g resource users        # Module + Controller + Service + DTOs (CRUD)

# Other generators
nest g pipe     validation
nest g guard    auth
nest g interceptor logging
nest g filter   http-exception
nest g middleware logger
nest g gateway  events       # WebSocket

Flags Cheat Sheet

Project Structure (after nest g resource users)

src/
├── users/
│   ├── users.module.ts
│   ├── users.controller.ts
│   ├── users.service.ts
│   ├── dto/
│   │   ├── create-user.dto.ts
│   │   └── update-user.dto.ts
│   └── entities/
│       └── user.entity.ts
├── app.module.ts
└── main.ts

Quick Start Recipe

nest new my-api
cd my-api
nest g resource users --no-spec
nest g resource posts --no-spec
nest g guard auth --flat
nest g middleware logger --flat
npm run start:dev