app-routing.module.ts

import { NgModule } from '@angular/core';
import { Routes, RouterModule } from '@angular/router';
import { appPath } from 'src/app/app-path.const';

const routes: Routes = [
  {
    path: appPath.home,
    loadChildren: './home/home.module#HomeModule'
  },
  {
    path: appPath.p2,
    loadChildren: './p2/p2.module#P2Module'
  },
  {
    path: appPath.p3,
    loadChildren: './p3/p3.module#P3Module'
  }
];

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