export declare const defaultKeys: {
    groupIdKey: string;
    groupTitleKey: string;
    groupRightTitleKey: string;
    groupLabelKey: string;
    itemIdKey: string;
    itemTitleKey: string;
    itemDivTitleKey: string;
    itemGroupKey: string;
    itemTimeStartKey: string;
    itemTimeEndKey: string;
};
export declare const defaultTimeSteps: {
    second: number;
    minute: number;
    hour: number;
    day: number;
    month: number;
    year: number;
};
type UnitValue = {
    long: string;
    mediumLong: string;
    medium: string;
    short: string;
};
export declare const defaultHeaderFormats: Record<string, UnitValue>;
export {};