how to extend service with dependencies in angular 2

Question

I have a parent service which has some dependencies like

@Injectable()
export class ParentService{
  constructor(private http:Http, private customService:Cus         


        

Answer 1

The parameters of the super class need to be repeated and passed to the super call:

@Injectable()
export class ChildService extends ParentService{
  constructor (http:Http, customService:CustomService){
    super(http, customService);
  }
}

There are some "hacks" to work around like Inheritance and dependency injection