/// <reference types="node" />
import { ServerSideConf } from '../../core';
import { Readable, Writable } from 'stream';
import { Cloneable } from 'cloneable-readable';
export declare const tempFileSuffix: string;
export declare function directWrite(conf: ServerSideConf, dir: string, fileName: string): Promise<Writable>;
export declare function fetchCached(conf: ServerSideConf, fileName: string): Cloneable<Readable>;