Credits

Thanks to Juri Strumpflohner and ngx-lazy-el!

Thanks to Bruno Bradach for creating this version of Juri's implementation for use in non-angular applications.

Disclaimer

My only contribution here is only in updating dependencies for use in newer angular projects.

Ngx-El (A.K.A NgxElement)

NgxElement enables to lazy load Angular components in non-angular applications. The library will register a custom element to which you can pass an attribute to specify what component you want to load.

It's a great way to use Angular in your CMS platform in an efficient manner.

Install Angular Elements

This library depends on Angular Elements. You can install it by running:

$ ng add @angular/elements

Installing the library

$ npm install ngx-el --save

Usage

1) Configure the Module containing the lazy loaded component

First of all, expose the Angular Component that should be loaded via a customElementComponent property.

...
@NgModule({
  declarations: [TalkComponent],
  ...
  exports: [TalkComponent],
  entryComponents: [TalkComponent]
})
export class TalkModule {
  customElementComponent: Type<any> = TalkComponent;
  ...
}

2) Define the lazy component map in your AppModule

Just like with the Angular Router, define the map of component selector and lazy module.

const lazyConfig = [
  {
    selector: 'talk',
    loadChildren: () => import('./talk/talk.module').then(m => m.TalkModule)
  }
];

@NgModule({
  ...,
  imports: [
    ...,
    NgxElementModule.forRoot(lazyConfig)
  ],
  ...
})
export class AppModule {
  ...
  ngDoBootstrap() {}
}

3) Use the lazy loaded component

You can load your Angular component by adding an <ngx-element> tag to the DOM in your non-angular application like follows:

<ngx-element
  selector="talk"
  data-title="Angular Elements"
  data-description="How to write Angular and get Web Components"
  data-speaker="Bruno">
</ngx-element>

4) Listen to events

You can listen to events emitted by Angular components.

Add an @Output event to your component:

...
@Output() tagClick: EventEmitter<string> = new EventEmitter();
...

Then add an event listener to the tagClick event on the appropiate <ngx-element> element:

const talks = document.querySelector('ngx-element[selector="talk"]');
talks.addEventListener('tagClick', event => {
  const emittedValue = event.detail;
  ...
});