Using Nest CLI generators to generate code quickly

Nest.JS provides a powerful CLI tool that helps developers generate boilerplate code quickly and efficiently. By using the Nest CLI generators, you can create modules, controllers, services, and other components with just a few commands. This not only speeds up the development process but also ensures that your code follows Nest’s best practices and conventions.

Generating a new Nest project

To create a new Nest project, you can use the following command:

npx @nestjs/cli new project-name

This command will scaffold a new Nest project with the specified name and set up the necessary files and folders.

Generating a module

To generate a new module, use the following command:

npx nest generate module module-name

This will create a new module file in the src directory. Modules are used to organize your application into cohesive blocks of functionality.

The module file will contain a basic module definition, including an @Module() decorator and an exports array.

Generating a controller

To generate a new controller, use the following command:

npx nest generate controller controller-name

This will create a new controller file in the src directory. Controllers handle incoming requests and return responses to the client.

The controller file will contain a basic controller definition, including an @Controller() decorator and some basic route handlers.

Generating a service

To generate a new service, use the following command:

npx nest generate service service-name

This will create a new service file in the src directory. Services are used to encapsulate business logic and interact with data sources.

The service file will contain a basic service definition, including an @Injectable() decorator and some basic methods.

Generating a middleware

To generate a new middleware, use the following command:

npx nest generate middleware middleware-name

This will create a new middleware file in the src/middleware directory. Middleware functions are used to process requests before they reach the controller.

The middleware file will contain a basic middleware definition, including an @Injectable() decorator and a use() method

Generating a guard

To generate a new guard, use the following command:

npx nest generate guard guard-name

This will create a new guard file in the src/guards directory. Guards are used to implement authorization logic and protect routes.

The guard file will contain a basic guard definition, including an @Injectable() decorator and a canActivate() method.

Generating an interceptor

To generate a new interceptor, use the following command:

npx nest generate interceptor interceptor-name

This will create a new interceptor file in the src/interceptors directory. Interceptors are used to transform the response or handle errors.

The interceptor file will contain a basic interceptor definition, including an @Injectable() decorator and an intercept() method.

Generating a Provider

To generate a new provider, use the following command:

npx nest generate provider provider-name

This will create a new provider file in the src/providers directory. Providers are used to encapsulate reusable logic and can be injected into other components.

The provider file will contain a basic provider definition, including an @Injectable() decorator and some basic methods.

Generating a Resource

To generate a new resource, use the following command:

npx nest generate resource resource-name

This will create a new resource file in the src directory. Resources are used to encapsulate a set of related components, such as controllers and services.

The resource file will contain a basic resource definition, including a controller, service, module and DTOs.