import { NgModule, ModuleWithProviders } from '@angular/core'; import { DaesangCipherService } from './services/daesang-cipher.service'; import { DaesangProtocolService } from './services/daesang-protocol.service'; const SERVICES = [DaesangCipherService, DaesangProtocolService]; @NgModule({ declarations: [], imports: [], exports: [] }) export class UCapDaesangModule { public static forRoot(): ModuleWithProviders { return { ngModule: UCapDaesangModule, providers: [...SERVICES] }; } }