message: fix(sortable): fixing AoT type issues
diff: @@ -17,7 +17,7 @@ import { DraggableItemService } from './draggable-item.service';
  (dragover)="cancelEvent($event)"
  (dragenter)="cancelEvent($event)"
  (drop)="resetActiveItem($event)"
  - (mouseleave)="resetActiveItem()">
  + (mouseleave)="resetActiveItem($event)">
  <div
  *ngIf="showPlaceholder"
  [ngClass]="placeholderClass"
  