/**
 * Generates a unique attribute selector based on the provided prefix.
 *
 * @param prefix - The prefix to prepend to the generated selector.
 * @returns A unique string combining the prefix and the selector.
 *
 * @example
 * ```ts
 * const selector = useAttrSelector('foo');
 * console.log(selector); // e.g., 'foo0'
 * ```
 */
export declare function useAttrSelector(prefix?: string): string;