Make sure that the 'router-outlet' is a valid Angular component before verifying its presence in the module for Angular 12

Recently, I delved into learning angular with a focus on implementing lazy loading in my project. Here's how the implementation unfolds:

Appmodule -- home

-- login

Homemodule

  • features -- main component Featuresmodule
  • chilrensmodeul

childrensmodule -- child1 -- child2 -- child3

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { APP_BASE_HREF, LocationStrategy, PathLocationStrategy } from '@angular/common';

import { AppRoutingModule } from './app-routing.module';
import { AppComponent } from './app.component';
import { HomeModule } from './home/home.module';


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


--- app.component.html
<button routerLink="/home">home</button>
<button routerLink="/login">login</button>
<router-outlet></router-outlet>
...

Getting below error

Error: src/app/shared/main/main.component.html:1:1 - error NG8001: 'router-outlet' is not a known element:
1. If 'router-outlet' is an Angular component, then verify that it is part of this module.
2. If 'router-outlet' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '@NgModule.schemas' of this component to suppress this message.

1 <router-outlet></router-outlet>
  ~~~~~~~~~~~~~~~

  src/app/shared/main/main.component.ts:5:16
    5   templateUrl: './main.component.html',
                     ~~~~~~~~~~~~~~~~~~~~~~~
    Error occurs in the template of component MainComponent.

Could someone offer a solution for this issue?

Thank you in advance!

Answer №1

To fix the issue of not finding RouterModule when declaring MainComponent, ensure you import it in your shared.module:

import { NgModule } from '@angular/core';
import { CommonModule } from '@angular/common';
import { MainComponent } from './main/main.component'
import { RouterModule } from '@angular/router';


@NgModule({
  declarations: [
     MainComponent,
  ],
  imports: [
     CommonModule,
     RouterModule // <---
  ],
  exports: [
     MainComponent,
  ]
})
export class SharedModule { }

Answer №2

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