import { NgModule, ModuleWithProviders } from '@angular/core'; import { _MODULE_CONFIG } from './types/token'; import { ExternalApiService } from './services/external-api.service'; import { ModuleConfig } from './types/module-config'; const SERVICES = [ExternalApiService]; @NgModule({ declarations: [], imports: [], exports: [] }) export class UCapExternalApiModule { public static forRoot( config: ModuleConfig ): ModuleWithProviders { return { ngModule: UCapExternalApiModule, providers: [{ provide: _MODULE_CONFIG, useValue: config }, ...SERVICES] }; } }