angular-template-type.ts

// TemplateContext.ts
export interface TemplateContext {
  a: string;
  b: string;
  c: string;
}
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// App.component.ts
@Component({
  selector: 'app-root',
  template: '
  <app-template-parent [layoutTemplate]="element" [templateContext]="context"></app-template-parent>
  <ng-template #element let-object>
    context -> {{object | json}}
  </ng-template>  
  '
})
export class AppComponent {
  context: TemplateContext = {
    a: 'aaaa',
    b: 'bbbb',
    c: 'cccc'
  };
}
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//template-parent.component.ts
@Component({
  selector: 'app-template-parent',
  template: '
    <ng-container *ngTemplateOutlet="layoutTemplate; context: {$implicit: templateContext}">
    </ng-container>
  '
})
export class TemplateParentComponent implements OnInit {
  
  @Input() templateContext: TemplateContext;
  @Input() layoutTemplate: TemplateRef<TemplateContext>;

  ngOnInit() {
  }
}