Lazy loading

app-routing.module.ts

import { NgModule } from '@angular/core';
import { RouterModule, Routes } from '@angular/router';
import { HomeComponent } from './home/home.component';

const routes: Routes = [
  { path: '', component: HomeComponent },
  // the special syntax points to a file and class in it that is the module to be lazy loaded
  { path: 'login', loadChildren: './login/login.module#LoginModule' },
  { path: 'personal', loadChildren: './personal/personal.module#PersonalModule' },
  { path: '**', component: HomeComponent }
];

@NgModule({
  imports: [RouterModule.forRoot(routes)],
  exports: [RouterModule]
})
export class AppRoutingModule {}

app.module.ts

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppRoutingModule } from './app-routing.module';
import { AppComponent } from './app.component';
import { HomeModule } from './home/home.module';
import { SharedModule } from './shared/shared.module';


@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    BrowserModule,
    AppRoutingModule,
    HomeModule,
    SharedModule
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }