This is a schematic for adding Progressive Web App support to an Angular project. Run the schematic with the Angular CLI:

ng add @angular/pwa --project <project-name>

Executing the command mentioned above will perform the following actions:

1. Adds @angular/service-worker as a dependency to your project.
2. Enables service worker builds in the Angular CLI.
3. Imports and registers the service worker in the application module.
4. Updates the index.html file to inlclude a link to add the manifest.webmanifest file.
5. Installs icon files to support the installed Progressive Web App (PWA).
6. Creates the service worker configuration file called ngsw-config.json, specifying caching behaviors and other settings.

See Getting started with service workers for more information.