@NgModule() class instantiate

[artaommahe]

There is some use-cases where some services don't have public methods and never used/injected by other components/services. This services inject other services and works with them on some events/etc. At ng1 we can use module.run() function to initialize this services, inject them at this function.
As i see at ng2 we can do this

@Injectable()
class SmthService {
  constructor() { console.log('SmthService'); }
}

@NgModule({
  providers: [ SmthService ],
})
export class AppModule {

  constructor(_smth: SmthService) {}
}

and this works as expected.
But looks like ng-metadata does not create module class instance and constructor is never called.
It would be useful to have modules classes instantiated.

[Hotell]

just curious, can you provide some official docs or article where are they using NgModule class constructor for this kind of instantiation ? thx

[artaommahe]

only this Ben Nadel post https://www.bennadel.com/blog/3180-ngmodule-constructors-provide-a-module-level-run-block-in-angular-2-1-1.htm

[Hotell]

implementation Notes:

• when bundle is called it should register ng1 .run hook with properly annotated injectables

[BhaskaranR]

dont think it is getting called ..