routing-before.ts

// In a separate `lazy.routing.ts` file:
@NgModule({
  imports: [
    LazyPageModule,
    RouterModule.forChild([
      {path: '', pathMatch: 'full', component: LazyPageComponent},
    ]),
  ],
})
export class LazyPageRoutingModule {}

// Then, in the main application routing configuration:
export const ROUTES: Route[] = [
  /* ...other routes */
  {
    path: 'lazy',
    loadChildren: () => import('./lazy.routing').then(mod => mod.LazyPageRoutingModule),
  },
];