/**
 * Return the year for a given ISO 8601 date string.
 *
 * - Returns the year as a string (e.g., "2024").
 * - Returns "" for invalid input.
 *
 * @param value ISO date string
 * @returns Year (YYYY) or "" on invalid input
 *
 * @example parseYearFromDate("2024-03-15") // "2024"
 * @example parseYearFromDate("invalid") // ""
 */
export declare function parseYearFromDate(value: string): string;