import { S3Client, S3ClientConfig } from '@aws-sdk/client-s3';
import { File, MetaStorage, MetaStorageOptions, UploadList } from '@uploadx/core';
export type S3MetaStorageOptions = S3ClientConfig & MetaStorageOptions & {
    bucket?: string;
    keyFile?: string;
};
export declare class S3MetaStorage<T extends File = File> extends MetaStorage<T> {
    config: S3MetaStorageOptions;
    bucket: string;
    client: S3Client;
    constructor(config: S3MetaStorageOptions);
    get(id: string): Promise<T>;
    delete(id: string): Promise<void>;
    save(id: string, file: T): Promise<T>;
    list(prefix: string): Promise<UploadList>;
}