import { Base, Type } from "igniteui-react-core";
/**
 * @hidden
 */
export declare abstract class LoadOnDemandTree_ChangeHistoryItem$1<T> extends Base {
    static $t: Type;
    protected $t: Type;
    readonly f: number;
    protected b: number;
    constructor($t: Type, a: number, b: number);
    d(a: number, b: number, c: number, d: boolean): number;
    e(a: number, b: number, c: boolean): number;
    get c(): number;
    abstract get a(): boolean;
    abstract g(a: number): void;
}