/**
 * Appends an index to a path prefix.
 * @param {string | undefined} prefix - The prefix to append the segment to, or undefined if no prefix exists.
 * @param {string} digits - The digits to append to the prefix.
 * @returns {string} The concatenated path, with the digits appended to the prefix (if provided).
 */
declare const appendPathIndex: (prefix: string | undefined, digits: string) => string;
export default appendPathIndex;