export declare function download(options: {
    url: string;
    onProgress?: (progress: {
        loaded: number;
        total: number;
    }) => void;
}): Promise<void>;
export declare function upload(options: {
    path: string;
    url: string;
    onProgress?: (progress: {
        uploaded: number;
        total: number;
    }) => void;
}): Promise<void>;