Type 'Promise<typeof PublicModule>' is not assignable to type 'LoadChildrenCallback'

Question

I am doing lazy loading in the angular app. but I am getting an error while importing the module in loadChildren.

I'm using angular 13. It was simple in angular 8 where I just import the module by using string.

I also tried import using string but it gives another error like Type 'String' is not assignable to type 'LoadChildrenCallback'

here are the codes below.

PublicRoutingModule

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


const routes: Routes = [
  {path: '', component: HomeComponent}
]

@NgModule({
  imports: [
    RouterModule.forChild(routes)
  ],
  exports: [
    RouterModule
  ]
})

export class PublicRoutingModule {
}

AppRoutingModule

import {NgModule} from '@angular/core';
import {RouterModule, Routes} from '@angular/router';
import {PublicModule} from "../OtherModules/public-module/public.module";

const routes: Routes = [
  {
    path: '/',
    loadChildren: import('../OtherModules/public-module/public.module').then(({PublicModule}) => PublicModule)
  },
];

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

PublicModule

import {CommonModule} from '@angular/common';
import {HomeComponent} from './home/home.component';
import {PublicRoutingModule}from "./public-routing.module";

@NgModule({
  declarations: [
    HomeComponent
  ],
  imports: [
    PublicRoutingModule
  ],
  exports: [
    PublicRoutingModule,
  ]
})
export class PublicModule {
}

AppModule

import {NgModule} from '@angular/core';
import {BrowserModule} from '@angular/platform-browser';

import {AppRoutingModule} from './app-routing.module';
import {AppComponent} from './app.component';
import {PublicModule} from '../OtherModules/public-module/public.module'

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

Thanks.

Answer 1

We have to pass a function to loadChildren.

wrong:

loadChildren: import('../OtherModules/public-module/public.module').then(({PublicModule}) => PublicModule)

Correct:

loadChildren: () => import('../OtherModules/public-module/public.module').then(({PublicModule}) => PublicModule)