import { s3Config, StorageFileList } from '@graperank/util/types';
export type S3FileList = {
    Key: string;
    filenames: string[];
    nextKey?: string;
};
export interface S3ObjectInput {
    Bucket: string;
}
export interface S3GetObjectInput extends S3ObjectInput {
    Key: string;
}
export interface S3PutObjectInput extends S3GetObjectInput {
    Body: any;
    ACL: "private" | "public-read" | "public-read-write" | "authenticated-read" | "aws-exec-read" | "bucket-owner-read" | "bucket-owner-full-control";
    Expires?: Date;
    Metadata?: {};
}
export interface S3ListObjectsInput extends S3ObjectInput {
    Marker?: string;
    MaxKeys?: number;
    Prefix?: string;
}
export declare class s3Api {
    private readonly bucket;
    private readonly client;
    constructor(config: s3Config);
    private send;
    get(Key: string): Promise<any>;
    put(Key: string, data: any, overwrite?: boolean): Promise<boolean>;
    /**
     * Returns S3FileList
     * containing a`filenames` array of items found.
     * if `nextKey` is a string, use its value to get more items
     * @param type
     * @param userid
     * @returns s3ListObjectOutput {IsTruncated : boolean, Keys : string[]}
     */
    list(Key: string): Promise<StorageFileList | undefined>;
}