import { FabreactorField, FabreactorFieldExportHeader } from './types';
export declare class utilities {
    static csvToItems: (file: any) => Promise<{}>;
    static downloadCsv: (items: any[], filename: string, fields: FabreactorField[], headers?: FabreactorFieldExportHeader[] | undefined) => void;
    static groupBy: (xs: any, key: any) => any;
    private static toCsvValue;
    private static csvMapping;
}