import DateHelpers from '../baseui/datepicker/utils/date-helpers';
import { Locale } from '../locale';
import type { FormatSummaryValueOptions, TimeRangePreset } from './types';
export declare const getSelectedTimeRange: (selectedTimeRange: string | undefined, timeRangeOptions: Array<TimeRangePreset>) => TimeRangePreset | undefined;
export declare const getSystemTzName: () => string;
/**
  @param date: Date object or epoch in source timezone
  @param srcTz: source timezone
  @param targetTz: target timezone
  This function is used to convert the time from one timezone to another timezone.
  Example use-case of this function
  Lets say you want to find out what time it will be in New York when it is 6th Nov, 2022 00:00 in Los Angeles.
  then you can call like:
  convertDateFromSrcTzToTargetTz(new Date('6 Nov 2022, 00:00'), "America/Los_Angeles", "America/New_York")
  this function will return 6 Nov 2022, 2:00 because generally NY is 3 hours ahead of LA but at 2:00AM NY will switch to DST
  and hence it will be not 3:00AM but 2:00AM.
*/
export declare const convertDateFromSrcTzToTargetTz: (date: Date | number, srcTz?: string, targetTz?: string) => number;
/**
 * @param date Date object or epoch representing the date in particular timezone
 * @param timezone timezone of the date
 * @returns epoch of the same time in system timezone
 * Use case:
 * Lets say user selects 6 Nov 2022, 00:00 from Time range picker and selects New York timezone.
 * Now we want to find out what that time represents in our system timezone(Los Angeles) which in given case is 5 Nov 2022, 21:00
 */
export declare const convertDateFromTargetTzToSystemTz: (date: Date | number, timezone?: string) => number;
/**
 * @param date date in system timezone
 * @param timezone timezone in which you want to convert this date to
 * @returns date in that timezone
 * Use case:
 * User will come back with 5 Nov 2022, 21:00 but has selected new york timezone so we want to find out
 * what time it will be in new york when it is 5 Nov 2022, 21:00 in system timezone(Los Angeles), which is
 * 6 Nov 2022, 00:00
 */
export declare const convertDateFromSystemTzToTargetTz: (date: Date | number, timezone?: string) => number;
/**
 * returns milliseconds offset from timezone name
 */
export declare const getTzOffset: (timezone: string, date?: number | Date | undefined) => number;
/**
 * @deprecated use convertDateFromTargetTzToSystemTz function to make sure you account for DST cases too
 * convert epoch from one timezone to another
 */
export declare const switchEpochTimezone: (date: Date | number, tzFrom?: string, tzTo?: string) => number;
/**
 * Adds or subtract the offset according to timezone passed so that we can get correct start date and end date in that timezone.
 * ex. Lets say we are in Asia/Kolakata timezone on 19th Feb and time is 12:30 AM, and selected Asia/Kabul timezone and preset as Today.
 * Now in Asia/Kolkata timezone today implies 19th Feb. But for Asia/Kabul which is one hour behind Asia/Kolkata Today still implies 18th Feb.
 * So, this function will subtract that offset of 1 hour from current date so new time 11:30PM, with this time we can get correct value
 * of today, this week, etc preset.
 */
export declare const getDateForGivenTimezone: (timezone?: string | undefined) => Date;
export declare const getDefaultTimeRangePresets: (locale: Locale) => TimeRangePreset[];
export declare const formatSummaryValue: ({ date, presetId, presetLabel, timezone, formatString, showFullDateInSummary, showTimezoneInSummary, adapter, locale, hidePresetLabel, displayVariant, }: FormatSummaryValueOptions) => string;
export declare const getRangeError: ({ maxDate, minDate, dateHelpers, timeRange, locale, preset, }: {
    minDate?: Date | null | undefined;
    maxDate?: Date | null | undefined;
    dateHelpers: DateHelpers<Date>;
    timeRange: Date[];
    locale: Locale;
    preset?: string | undefined;
}) => {
    hasError: boolean;
    errMsg?: string;
};