/**
 * Remove duplicated directories from the start of a path or url's path
 *
 * @param {string} url URL or pathname with possible duplicate subdirectory
 * @param {string} rootUrl Root URL with an optional subdirectory
 * @returns {string} URL or pathname with any duplicated subdirectory removed
 */
export declare const deduplicateSubdirectory: (url: string, rootUrl: string) => string;
/** urlJoin
 * Returns a URL/path for internal use in Ghost.
 * @param {string[]} parts takes parts and concats those to a valid path/URL.
 * @param {Object} options
 * @param {string} options.rootUrl used for deduplicating any subdirectories
 * @return {string} URL concatinated URL/path of arguments.
 */
export declare function urlJoin(parts: string[], options: {
    rootUrl: string;
}): string;