/// <reference types="node" />
import { Transform } from 'stream';
import { IWorksheet, IWorksheetOptions, IXlsxStreamOptions, IXlsxStreamsOptions } from './types';
export declare function getXlsxStream(options: IXlsxStreamOptions): Promise<Transform>;
export declare function getXlsxStreams(options: IXlsxStreamsOptions): AsyncGenerator<Transform>;
export declare function getWorksheets(options: IWorksheetOptions): Promise<IWorksheet[]>;
export declare const excelNumberFormat: {
    [format: number]: string;
};