import { SortDirection } from '@angular/material/sort';
/**
 * @description Class that provides functionality to sort lists.
 */
export declare class SortHelper {
    /**
     * @description Sorts a list of numbers, strings, or objects in a given sorting direction.
     * @param sortingList
     * @param sortDirection
     * @param sortingKey - a string that identifies the property the list of objects should be sorted by
     */
    static sortArray(sortingList: Array<any>, sortDirection?: SortDirection, sortingKey?: string): Array<any>;
    private static internalSort;
}