import { IDataRow, IGroupingObj } from './interfaces';
export declare class ArrayGrouping {
    private groups;
    private grouping;
    private expanded;
    constructor();
    reset(): void;
    group(arrayToGroup: IDataRow[], grouping: IGroupingObj[], keepExpanded?: boolean): IDataRow[];
    getExpanded(): string[];
    setExpanded(x: string[]): void;
    getGrouping(): IGroupingObj[];
    setGrouping(g: IGroupingObj[]): void;
    expandOneOrAll(id: string, array?: Set<string>): IDataRow[];
    collapseOneOrAll(id?: string): IDataRow[];
    private createMainGrouping;
    private groupChildren;
}