Angular CLI

Angular CLI (ng) is a command-line interface for Angular. It allows you to create, build, test, and run Angular applications from the command line. Let’s dive into the essential aspects of Angular CLI for programmers.

Installing

To install the Angular CLI, run the following command:

npm install -g @angular/cli

Creating a New Project

To create a new Angular project, run the following command:

ng new my-app

This will create a new Angular project named my-app in the current directory. You can also specify the directory name as follows:

ng new my-app --directory my-dir

Generating Components

To generate a new component, run the following command:

ng generate component my-component

This will create a new component named my-component in the src/app directory. You can also specify the directory name as follows:

ng generate component my-component --directory my-dir

Updating Angular

To update Angular in an existing project, run the following command:

ng update @angular/cli @angular/core

Updating Angular CLI

To update the Angular CLI, run the following command:

npm install -g @angular/cli@latest

Running the Application

To run the application, run the following command:

ng serve

This will start the application on port 4200. You can also specify the port number as follows:

ng serve --port 3000

Building the Application

To build the application, run the following command:

ng build

Testing the Application

To test the application, run the following command:

ng test

This will run all the tests in the src/app directory.

Debugging the Application

To debug the application, run the following command:

ng serve --inspect

This will start the application in debug mode. You can then attach a debugger to the application.