import { Dayjs } from 'dayjs';
import 'dayjs/locale/en';
import 'dayjs/locale/en-gb';
import 'dayjs/plugin/advancedFormat';
import 'dayjs/plugin/customParseFormat';
import 'dayjs/plugin/isBetween';
import 'dayjs/plugin/isSameOrAfter';
import 'dayjs/plugin/isSameOrBefore';
import 'dayjs/plugin/localeData';
import 'dayjs/plugin/localizedFormat';
import 'dayjs/plugin/minMax';
import 'dayjs/plugin/quarterOfYear';
import 'dayjs/plugin/relativeTime';
import 'dayjs/plugin/utc';
type ZeniDate = Dayjs;
export { ZeniDate, Dayjs };
/**
 * localeID can be just <iso 639-1 language code> example, 'en', 'fr',
 * or
 * it can be combination of language code (iso639-1) and region code (ios 3166) seperated by hyphon. example en-us, en-in
 */
export declare function updateZeniDateLocaleID(localeID: string): void;
export declare function dateInLocal(dateStringISO: string): ZeniDate;
export declare function date(dateStringISO: string, format?: string): ZeniDate;
export declare function dateInUTC(dateStringISO: string): ZeniDate;
export declare function dateLocal(dateStringISO: string): ZeniDate;
export declare function dateNow(): ZeniDate;
export declare function dateFromYearMonthDate(year: number, month: number, day?: number): ZeniDate;
export declare function getBusinessDayOfDate(date: ZeniDate): number;
export declare function setLocalTimezone(timezone: string): void;
export declare function getLocalTimezone(): string;
/**
 * Return month index given month name
 * @param month name of the month
 * @param localeID localeID can be just <iso 639-1 language code> example, 'en', 'fr', (or)
 * it can be combination of language code (iso639-1) and region code (ios 3166) seperated by hyphon. example en-us, en-in
 * @returns
 */
export declare function getMonthIndex(month: string, _localeID?: string): number | undefined;
export declare function getMinDate(dates: ZeniDate[]): Dayjs;