import { MergeItems } from '../types/merge';
/**
 * Retrieves the oldest item from an array of item keys.
 * @param items - An array of item keys.
 * @returns A Promise that resolves to an array containing the oldest item key and an array of the remaining item keys.
 */
export declare function get_oldest_item(items: string[]): Promise<MergeItems>;
export declare function get_Newest_item(items: string[]): Promise<MergeItems>;
/**
 * Merges multiple items in a group.
 * @param {string} groupid - The ID of the group.
 * @param {string[]} items - An array of item IDs to be merged.
 */
export declare function merge_items(groupid: string, items: string[]): Promise<void>;