/**
 * @license
 * Copyright Datorama. All Rights Reserved.
 *
 * Use of this source code is governed by an Apache License 2.0 license that can be
 * found in the LICENSE file at https://github.com/datorama/client-core/blob/master/LICENSE
 */
import { PipeTransform } from '@angular/core';
export declare class DatoTreePipe implements PipeTransform {
    transform(arr: any[], groupLabel?: string): {
        label: string;
        children: any[];
    }[];
}