exporting Angular 4 service as array of injectables

Asked Oct 04 '17 at 13:24

Active Oct 04 '17 at 13:24

Viewed 46 times

I know there is the following way of defining injectable services in Angular 2/4 (correct me if I am wrong somewhere, please):

@Injectable()
export class SomeService {
    ...
}

export const someServiceInjectables: Array<any> = [
  SomeService
];

What is the purpose of it? It injects a service with @Injectable without the array. AFAIK it is used for exporting specific implementation of a service (am I right?) but what's the benefit here?

Thanks a lot!

asked Oct 04 '17 at 13:24

Dmitry Senkovich

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i think you are mistaken ed you dnt need these lines `export const someServiceInjectables: Array = [ SomeService ];` – Rahul Singh Oct 04 '17 at 13:28
@Rahul Singh Sorry, I didn't get it. I mean I can remove the array, add the service class to `providers` in a `NgModule` and it will inject it. So why do I need the array? It is taken from examples from ng--book 2 – Dmitry Senkovich Oct 04 '17 at 13:42
Probably there was some other purpose – Vamshi Oct 04 '17 at 14:54
@Skeptor Well, in fact I haven't found any other usages across the project. So it seems to be like missing, to be deleted? – Dmitry Senkovich Oct 04 '17 at 14:59
How is the service added to providers ? – Vamshi Oct 04 '17 at 15:04
@Skeptor `providers: [ SomeService ]` – Dmitry Senkovich Oct 04 '17 at 15:37
then I dont know – Vamshi Oct 04 '17 at 16:51
@Skeptor thank for suggestion at least:) – Dmitry Senkovich Oct 04 '17 at 16:52

exporting Angular 4 service as array of injectables

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