import { VirtualRowModelGenerator } from '@syncfusion/ej2-grids';
import { NotifyArgs, Row, Column, IGrid } from '@syncfusion/ej2-grids';
/**
 * RowModelGenerator is used to generate grid data rows.
 *
 * @hidden
 */
export declare class TreeVirtualRowModelGenerator extends VirtualRowModelGenerator {
    private visualData;
    constructor(parent: IGrid);
    addEventListener(): void;
    private getDatas;
    private getDataInfo;
    generateRows(data: Object[], notifyArgs?: NotifyArgs): Row<Column>[];
    checkAndResetCache(action: string): boolean;
}