import type { PresignGetOptions, PresignPutOptions, StorageAdapter } from './index.js';
interface S3Config {
    bucket: string;
    region: string;
    accessKeyId: string;
    secretAccessKey: string;
    endpoint?: string;
    publicUrl?: string;
}
export declare class S3StorageAdapter implements StorageAdapter {
    private client;
    private readonly publicUrl?;
    constructor(cfg: S3Config);
    upload(fileId: string, data: Blob | ArrayBuffer, contentType: string): Promise<void>;
    get(fileId: string): Promise<Response>;
    delete(fileId: string): Promise<void>;
    exists(fileId: string): Promise<boolean>;
    presignPut(key: string, opts: PresignPutOptions): Promise<string>;
    presignGet(key: string, opts: PresignGetOptions): Promise<string>;
    stat(key: string): Promise<{
        size: number;
        contentType: string;
    } | null>;
    publicUrlFor(key: string): string | undefined;
    list(prefix: string): Promise<string[]>;
}
export {};
//# sourceMappingURL=s3.d.ts.map