/**-----------------------------------------------------------------------------------------
* Copyright © 2024 Progress Software Corporation. All rights reserved.
* Licensed under commercial license. See LICENSE.md in the project root for more information
*-------------------------------------------------------------------------------------------*/
import { Subject } from "rxjs";
import * as i0 from "@angular/core";
/**
 * @hidden
 */
export declare const defaultExpanded: (_item: any) => boolean;
/**
 * @hidden
 */
export declare class ExpandStateService {
    changes: Subject<any>;
    isExpanded: any;
    toggleState(dataItem: any): void;
    expand(dataItem: any): void;
    collapse(dataItem: any): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<ExpandStateService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<ExpandStateService>;
}