export interface Access {
    name: string;
    type: string;
    actions: string[];
    alias?: string;
}
export declare const generateToken: (subject: string | undefined, audience: string, access: Access[]) => string;
export declare const token: import("express").RequestHandler<import("express-serve-static-core").ParamsDictionary, any, undefined, {
    scope?: string | string[] | Record<string, string> | undefined;
}, Record<string, any>>;
declare class S3Client {
    private s3;
    private bucket;
    private rootPath;
    constructor(config: {
        endpoint: string;
        accessKey: string;
        secretKey: string;
        bucket: string;
        rootPath: string;
    });
    private listChildPrefixes;
    private listDigestsAt;
    listRepoDigests(repo: string): Promise<string[]>;
    listTagDigests(repo: string, tag: string): Promise<string[]>;
    listCacheRepos(repo: string): Promise<string[]>;
}
export declare const s3Client: S3Client | undefined;
export declare function generateDeleteToken(subject: string, repo: string): string;
export declare function deleteImage(registryToken: string, repo: string, digest: string): Promise<void>;
export {};