/**
 * Compare two zoned datetime strings for exact local-field equality.
 *
 * - Inputs must be valid ISO 8601 zoned datetime strings.
 * - Returns `true` when year/month/day/hour/minute/second/millisecond/microsecond/nanosecond and IANA timeZone id all match; otherwise `false`.
 * - Invalid inputs return `false`.
 *
 * @param value1 first zoned datetime string
 * @param value2 second zoned datetime string
 * @returns boolean indicating whether the two zoned datetimes are equal
 *
 * @example areZonedEqual("2024-02-29T12:34:56.789+00:00[UTC]", "2024-02-29T12:34:56.789+00:00[UTC]") // true
 * @example areZonedEqual("invalid", "2024-02-29T12:34:56.789+00:00[UTC]") // false
 */
export declare function areZonedEqual(value1: string, value2: string): boolean;