import { PivotDateGroupFieldDateSystemEnum } from './types';
/**
 * @description blank placeholder for empty cells
 *  the get/set functions are used to allow for customization
 * @constant {string} BLANK_PLACEHOLDER - default value is '--$blk$--'
 */
export declare const GlobalConfig: {
    TUPLE_PLACEHOLDER: string;
    TUPLE_FIELD_SEPARATOR: string;
    COl_ROOT_PATH: string;
    ROW_ROOT_PATH: string;
    BLANK_PLACEHOLDER: string;
    isDev: boolean;
    defaultSortType: string;
    dateSystem: PivotDateGroupFieldDateSystemEnum;
};
export declare const setBlankPlaceholder: (value: string) => string;
export declare const setDevMode: (value: boolean) => boolean;
export declare const setDefaultSortType: (type: "ascending" | "descending" | "default") => void;
export declare const setDateSystem: (value: PivotDateGroupFieldDateSystemEnum) => PivotDateGroupFieldDateSystemEnum;