import { IProxy } from '@verdaccio/proxy';
import { Config, Manifest } from '@verdaccio/types';
export interface ProxyInstanceList {
    [key: string]: IProxy;
}
/**
 * Set up the Up Storage for each link.
 */
export declare function setupUpLinks(config: Config): ProxyInstanceList;
export declare function updateVersionsHiddenUpLinkNext(manifest: Manifest, upLink: IProxy): Manifest;