##app.routing.ts
const routes: Routes = [
  { path: '', component: HomeComponent },
  { path: 'login', loadChildren: 'src/app/Authorization/Authorization.module#AuthorizationModule' },
  { path: 'homepage', loadChildren: 'src/app/Flats/Flats.module#FlatsModule' },
  { path: 'notices', loadChildren: 'src/app/Notice/Notices.module#NoticesModule' },
  { path: 'fees', loadChildren: 'src/app/fees/Fees.module#FeesModule' },

];

export const ModuleRouting: ModuleWithProviders = RouterModule.forRoot(routes);

##app.module.ts
  imports: [
    ...
    ...
    ModuleRouting (z pliku app.routing.ts)
  ]

## I teraz dla każdego kolejnego modułu:
## moduł.routing.ts
const routes: Routes = [
  {
    path: 'notices',
    component: NoticeComponent,
  }
];
export const ModuleRouting: ModuleWithProviders = RouterModule.forChild(routes);

## moduł.ts
import { ModuleRouting } from './Notice.routing';

@NgModule({
  imports: [
    ...
    ...
    ModuleRouting
  ],