import { Observable } from "rxjs";
import { KlesDragDropRowTableService } from "./dragdroprow.service";
import { CdkDrag, CdkDragDrop } from "@angular/cdk/drag-drop";
import { UntypedFormGroup } from "@angular/forms";
export declare class KlesDragDropRowTreeTableService extends KlesDragDropRowTableService {
    beforeDrop(event: any): Observable<boolean>;
    onDrop(event: CdkDragDrop<any>): void;
    private moveChildren;
    private findIndexLastChild;
    sortPredicate(index: number, item: CdkDrag<UntypedFormGroup>): boolean;
}