Angular - InstantiatorModule

instantiator.module.ts

import { NgModule, ModuleWithProviders, InjectionToken, Inject, Injector } from '@angular/core';
import { CommonModule } from '@angular/common';

export const INSTANTIATED_SERVICES = new InjectionToken<any[]>('instantiated services');

/**
 * This module takes an array of services
 * and instantiates them for you. They'll be
 * singletons for the injector of the importing module.
 *
 * Useful if you need services to run without
 * putting them in your components' contructors.
 */
@NgModule({
  imports: [ CommonModule ]
})
export class InstantiatorModule {
  constructor(
    @Inject(INSTANTIATED_SERVICES) services: any[],
    injector: Injector
  ) {
    services.forEach(service => {
      injector.get(service.provide || service)
    })
  }

  static register(services: any[]): ModuleWithProviders {
    return {
      ngModule: InstantiatorModule,
      providers: [
        ...services,
        {
          provide: INSTANTIATED_SERVICES,
          useValue: services
        }
      ]
    }
  }
}

your.module.ts

...

const services = [ FirstService, SecondService ];

@NgModule({
  imports: [
    ...
    InstantiatorModule.register(services)
  ]
})
export class YourModule {}