Generating Modules, Controllers, and Services
Explore how to use the NestJS CLI to create modules controllers and services in a backend application. Understand the importance of separating concerns for maintainability and scalability while establishing the foundation of a REST API.
We'll cover the following...
Now that we’ve defined our application requirements and specifications, we’ll use the NestJS CLI to create our project. This lesson will use NestCLI to generate our application’s modules, controllers, and services.
Project creation
Note: This course primarily uses
npmfor consistency and a seamless learning experience. It’s a widely used package manager in the JavaScript ecosystem.
To create a new project called books-api, run the following command:
nest new books-api
Choose npm as a package manager. At the end of project creation, our project folder structure should resemble the following:
books-api/
├── node_modules/
├── src/
│ ├── main.ts
│ ├── app.module.ts
│ ├── app.controller.ts
│ ├── app.service.ts
├── test/
├── .gitignore
├── nest-cli.json
├── package.json
├── package-lock.json
└── tsconfig.json
Creating BooksModule
Before creating BooksModule ...