import { PipeTransform } from '@angular/core';
import { Config } from '..';
export declare class SortPipe implements PipeTransform {
    private defaultArray;
    private static isNaN;
    private static compare;
    transform(array: any[], filter: {
        order: string;
        key: string;
    }, config?: Config): any[];
    private sortAsc;
    private sortDesc;
}