/**
 * 将数据导出为 CSV 或 JSON
 */
export declare const exportData: (data: any, fileType?: string, name?: string) => Promise<void>;
/**
 * 将内容保存为文件
 */
export declare const saveContentToFile: (content: any, fileName: any, type?: string) => void;
/**
 * 浏览器保存文件到本地
 * @param {Blob} file
 * @param {string} fileName
 */
export declare const saveFile: (file: any, fileName: any) => void;
/**
 * 通过链接下载文件
 */
export declare const downloadFileFromUrl: (url: any, fileName: any) => void;
/**
 * 读取上传的xlsx文件
 */
export declare const getXlsxFileToJson: (file: any, cb: any) => void;
/**
 * 读取上传的xlsx文件的表头
 */
export declare const getXlsxFileHeader: (file: any, cb: any) => void;
/**
 * 生成随机字符串
 */
export declare const createRandomString: (len?: number) => string;