import { TimezoneFields } from '../types/scheduler-types';
/**
 * Timezone utility class for handling IANA timezone conversions and offsets.
 * All methods are static and work with UTC dates.
 */
export declare class Timezone {
    /**
     * Common IANA timezone identifiers for the timezone selector.
     */
    static readonly timezoneData: TimezoneFields[];
    /**
     * Get the UTC offset in minutes for a given date and timezone.
     * Accounts for DST active at that specific date.
     *
     * @param {Date} date - The date to calculate offset for (assumed UTC)
     * @param {string} timezone - IANA timezone name (e.g., 'America/New_York')
     * @returns {number} Offset in minutes from UTC (negative for west of UTC, positive for east)
     */
    static offset(date: Date, timezone: string): number;
    /**
     * Convert a UTC date to the display wall-clock time in a target timezone.
     * Adds the timezone offset to shift UTC to local time in the target zone.
     *
     * @param {Date} date - UTC date to convert
     * @param {string} timezone - Target IANA timezone name
     * @returns {Date} A Date representing the wall-clock time in the target timezone
     */
    static add(date: Date, timezone: string): Date;
    /**
     * Remove the timezone offset from a wall-clock date, returning UTC equivalent.
     * Interprets the input date as a local wall-clock in the given timezone
     * and converts it to the equivalent UTC instant.
     *
     * @param {Date} date - Wall-clock date in the source timezone (as a Date object)
     * @param {string} timezone - Source IANA timezone name
     * @returns {Date} UTC date equivalent
     */
    static remove(date: Date, timezone: string): Date;
    /**
     * Remove the local runtime offset from a date.
     * Useful when Date objects are created in local time and need normalization to UTC.
     *
     * @param {Date} date - Date in local runtime timezone
     * @returns {Date} UTC-equivalent date with local offset removed
     */
    static removeLocalOffset(date: Date): Date;
    /**
     * Convert a wall-clock time from one timezone/offset to another.
     * Takes a date interpreted in the source timezone and converts it to target timezone.
     *
     * @param {Date} date - Wall-clock date (assumed to be in source timezone)
     * @param {number|string} fromOffsetOrZone - Source timezone: numeric offset (minutes) or IANA name
     * @param {number|string} toOffsetOrZone - Target timezone: numeric offset (minutes) or IANA name
     * @returns {Date} Wall-clock date in target timezone
     */
    static convert(date: Date, fromOffsetOrZone: number | string, toOffsetOrZone: number | string): Date;
    /**
     * Get a list of common IANA timezone identifiers for use in editor/UI selectors.
     *
     * @returns {TimezoneFields[]} Array of IANA timezone names sorted alphabetically
     */
    static getLocalTimezoneName(): string;
    static getTimezoneData(): TimezoneFields[];
}