/// <reference types="express-serve-static-core" />
/// <reference types="node" />
import { S3 } from "aws-sdk";
import LRUCache from "lru-cache";
import { BaseSource, SourceOptions } from "./base";
export interface S3SourceOptions extends SourceOptions {
    bucket: string;
    region?: string;
    accessKeyId?: string;
    secretAccessKey?: string;
    profile?: string;
}
export declare class S3Source extends BaseSource {
    s3options: S3SourceOptions;
    client: S3;
    matchCache: LRUCache<string, string>;
    constructor(options: S3SourceOptions);
    matchCacheGetOrSet(key: string): Promise<string | undefined>;
    get(key: string, _req?: Express.Request): Promise<Buffer>;
}