export interface Options {
    url: string;
    body?: BodyInit;
    onDownloadProgress?: (receivedLength: number, contentLength: number) => void;
    fetchOptions?: RequestInit | ((fetchOptions: RequestInit) => Promise<RequestInit>);
}
export declare function downloadFile(options: Options): Promise<{
    fileName: string;
    blob: Blob;
}>;
export interface DownloadAndSaveFileOptions extends Options {
    defaultFileName: string;
}
export declare function downloadAndSaveFile(options: DownloadAndSaveFileOptions, downloadFileEnable?: boolean): Promise<void>;