/**
 * This helper class will create a cache of all the id's in the items object and
 * path to the object.
 * Example:
 * [{
 *   // item 1,
 *   id: 1,
 *   children:[{
 *     // item 1.1,
 *     id: '2'
 *   }]
 * }]
 *
 * Cache will look something like:
 * {1: 0, 2: '0.children[0]'}
 */
export default class TableTreeDataHelper<T extends any = any> {
    key: keyof T;
    keysCache: any;
    constructor({ key, }?: {
        key?: keyof T | undefined;
    });
    updateItems(items: T[], allItems?: T[], parentItem?: T | null): T[];
    appendItems(items: T[], allItems?: T[], parentItem?: T | null): T[];
}