Angular: get generic parent component

gistfile1.ts

import { Component, Injector, ViewContainerRef } from '@angular/core';
//  Injector.view is hidden property. Hence no typing for this.
// Below extends abstract injector class. 
// Note: Class can't be merged so we create interface 
// which extends Injector class.
interface ExtendedInjector extends Injector {
  view: { component: any }
}
@Component()
class ChildComponent {
  
  parentComponent: any
  
  constructor( private vcRef: ViewContainerRef ){
    this.parentComponent = (this.vcRef.injector as ExtendedInjector).view.component
  }
}