import { Column } from '../models';
import { FormatFunc } from '../types';
import { Group } from '../Models/Group';
import { GroupPanelSettings } from '../Models/GroupPanelSettings';
export declare const groupMark: {};
export declare const groupSummaryMark: {};
export declare const groupDataMark: {};
export declare const updateExpandedGroups: (groupsExpanded: any[][], groupKey: any[]) => any[][];
export declare const getExpandedGroups: (groupedData: any[]) => any[][];
export declare const getGroupedData: (data: any[], groups: Group[], groupedColumns: Column[], groupsExpanded?: any[]) => any[];
export declare const convertToFlat: (grouped: Map<any, any>, key?: any[]) => any[];
export declare const getGroupedStructure: ({ data, groups, groupedColumns, expandedDeep, groupsExpanded, parentGroupKey }: {
    data: any[];
    groups: Group[];
    groupedColumns: Column[];
    expandedDeep?: number;
    groupsExpanded?: any[];
    parentGroupKey?: any[];
}) => Map<any, any> | void;
export declare const groupBy: (data: any[], keyGetter: any, isEmptyValue?: boolean) => Map<any, any>;
export declare const normalizeKeyForMap: (key: any) => any;
export declare const getGroupMark: () => {};
export declare const getGroupText: (value: any, column: Column, format?: FormatFunc, groupItems?: any[]) => any;
export declare const isMaxDeep: (groupPanel: GroupPanelSettings, columns: Column[], groups?: Group[]) => boolean;