/**
 * Returns a string similar to `Date.toISOString()` but in the
 * timezone `tzid`. Contrary to the typical meaning of `Z` at the end
 * of the string, this is not actually a UTC date.
 * @example
 * const dt = new Date(Date.UTC(2021, 0, 31, 7, 30, 50));
 * getPseudoISO('UTC', dt);                // '2021-01-31T07:30:50Z'
 * getPseudoISO('America/New_York', dt);   // '2021-01-31T02:30:50Z'
 * getPseudoISO('Asia/Jerusalem', dt);     // '2021-01-31T09:30:50Z'
 */
export declare function getPseudoISO(tzid: string, date: Date): string;
/**
 * Returns number of minutes `tzid` is offset from UTC on date `date`.
 * @example
 * const january = new Date(Date.UTC(2020, 0, 15, 12));
 * getTimezoneOffset('America/New_York', january);    //  300 (UTC-5)
 * getTimezoneOffset('America/Los_Angeles', january); //  480 (UTC-8)
 * getTimezoneOffset('Asia/Jerusalem', january);      // -120 (UTC+2)
 */
export declare function getTimezoneOffset(tzid: string, date: Date): number;
/**
 * Formats the date portion of `dt` as `YYYY-MM-DD` using the date's
 * local-time fields (year/month/day), not its UTC fields. The year is
 * always padded to at least 4 digits and negative years are prefixed
 * with `-`, matching the formatting that `pad4` applies.
 *
 * This is intentionally separate from `Date.prototype.toISOString()`,
 * which always reports in UTC and may report a different day for
 * dates near midnight in non-UTC time zones.
 * @example
 * isoDateString(new Date(2008, 10, 13)); // '2008-11-13'
 * isoDateString(new Date(2021, 0, 31));  // '2021-01-31'
 */
export declare function isoDateString(dt: Date): string;