ng add
Adds support for an external library to your project.
      
      ng add <collection> [options]
    说明
Adds the npm package for a published library to your workspace, and configures your default app project to use that library, in whatever way is specified by the library's schematic. For example, adding @angular/pwa configures your project for PWA support.
The default app project is the value of defaultProject in angular.json.
参数
| 参数 | 说明 | 
|---|---|
| <collection> | The package to be added. | 
选项
| 选项 | 说明 | 
|---|---|
| --defaults=true|false | When true, disables interactive input prompts for options with a default. 默认值:  | 
| --dryRun=true|false | When true, runs through and reports activity without writing out results. 默认值:  别名: -d | 
| --force=true|false | When true, forces overwriting of existing files. 默认值:  别名: -f | 
| --help= | Shows a help message for this command in the console. 默认值:  | 
| --interactive=true|false | When false, disables interactive input prompts. 默认值:  | 
