angular5-course/src/app/app.server.module.ts

import { NgModule } from '@angular/core';
import { ServerModule } from '@angular/platform-server';

import { AppModule } from "./app.module";
import { AppComponent } from './app.component';

@NgModule({
    imports: [
        AppModule,
        ServerModule
    ],
    bootstrap: [AppComponent]
})
export class AppServerModule {}