Example ivy

ivy.example.ts

@Component({
  selector: 'my-app',
  template: `
   <h2>Parent</h2>
   <child [prop1]="x"></child>
  `
})
export class AppComponent {
  x = 1;
}
@Component({
  selector: 'child',
  template: `
   <h2>Child {{ prop1 }}</h2>
   <sub-child [item]="3"></sub-child>
   <sub-child *ngFor="let item of items" [item]="item"></sub-child>
  `
})
export class ChildComponent {
  @Input() prop1: number;
  
  items = [1, 2];
}
@Component({
  selector: 'sub-child',
  template: `
   <h2 (click)="clicked.emit()">Sub-Child {{ item }}</h2>
   <input (input)="text = $event.target.value">
   <p>{{ text }}</p>
  `
})
export class SubChildComponent {
  @Input() item: number;
  @Output() clicked = new EventEmitter();
  text: string;
}