importProvidersFrom

Collects providers from all NgModules and standalone components, including transitively imported ones.

Providers extracted via importProvidersFrom are only usable in an application injector or another environment injector (such as a route injector). They should not be used in component providers.

The results of the importProvidersFrom call can be used in the bootstrapApplication call:

await bootstrapApplication(RootComponent, {
  providers: [
    importProvidersFrom(NgModuleOne, NgModuleTwo)
  ]
});

You can also use the importProvidersFrom results in the providers field of a route, when a standalone component is used:

export const ROUTES: Route[] = [
  {
    path: 'foo',
    providers: [
      importProvidersFrom(NgModuleOne, NgModuleTwo)
    ],
    component: YourStandaloneComponent
  }
];