ng add
Adds support for an external library to your project.
ng add <collection> [options]
 Description
Adds the npm package for a published library to your workspace, and configures the project in the current working directory (or the default project if you are not in a project directory) to use that library, as specified by the library's schematic. For example, adding @angular/pwa configures your project for PWA support:
ng add @angular/pwa
The default project is the value of defaultProject in angular.json.
Arguments
| Argument | Description | 
|---|---|
| <collection> | The package to be added. | 
Options
| Option | Description | 
|---|---|
| --defaults=true|false | When true, disables interactive input prompts for options with a default. | 
| --help=    true|false|json|JSON | Shows a help message for this command in the console. Default:  | 
| --interactive=true|false | When false, disables interactive input prompts. | 
| --registry=registry | The NPM registry to use. | 
| --verbose=true|false | Display additional details about internal operations during execution. Default:  | 
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Licensed under the Creative Commons Attribution License 4.0.
    https://v8.angular.io/cli/add