/** Helpers for time zones, based on `Intl.DateTimeFormat` */
export declare namespace Timezones {
    const Current: string;
    const CurrentOffset: number;
    /**
     * Get the offset in minutes for a given time zone and date. Uses Intl.DateTimeFormat
     * to get the time zone name, then parses it to get the offset.
     * @param timeZone time zone name, e.g. 'America/New_York', 'Europe/Kyiv', etc.
     * @param date date to get the offset for. If not provided, uses the current date.
     * @returns offset in minutes. Positive values are west of UTC, negative values are east of UTC.
     */
    function getOffset(timeZone: string, date?: Date | number): number;
    /** Returns a new date with the specified timezone offset applied.
     *
     * Usage case can be imagined like this: if your local wall clock shows time X,
     * what your clock will show when another local wall clock in the specified timezone will be showing time X.
    */
    function shiftToTimeZone(date: Date, tz: string | number): Date;
}