/**
 * Reformats a recognizable date string into a target format.
 * Mirrors the Java DateUtilities.reformatDateString method.
 * @param rawDate - The input date string to parse (must be parseable by `new Date()`).
 * @param format - The target format string. Supported: 'yyyy-MM-dd', 'dd-MM-yyyy', 'dd MMM yyyy', 'yyyy-M-d'.
 * @returns The reformatted date string.
 * @throws Error if the date string cannot be parsed.
 */
export declare function reformatDateString(rawDate: string, format: string): string;