Old file

import {
   ComponentRef,
   Directive,
   ElementRef,
   HostBinding,
   HostListener,
   Input,
   OnChanges,
   OnDestroy,
   OnInit,
   Renderer2,
   SimpleChanges,
   TemplateRef
} from "@angular/core";

const importReferences:
   ComponentRef<any> |
   Directive |
   ElementRef |
   HostBinding |
   HostListener |
   Input |
   OnChanges |
   OnDestroy |
   OnInit |
   Renderer2 |
   SimpleChanges |
   TemplateRef<any> = null;