import { IStorageAdapter, UploadOptions, DownloadOptions, ListOptions, StorageObject, DeleteOptions, PresignedUrlOptions } from '../storage.interface';
import { Readable } from 'stream';
export interface CloudinaryConfig {
    cloudName: string;
    apiKey: string;
    apiSecret: string;
    folder?: string;
}
export declare class CloudinaryStorageAdapter implements IStorageAdapter {
    private readonly logger;
    private readonly folder;
    constructor(config: CloudinaryConfig);
    uploadStream(stream: Readable, options: UploadOptions): Promise<{
        key: string;
        etag?: string;
    }>;
    downloadStream(options: DownloadOptions): Promise<Readable>;
    listObjects(options?: ListOptions): Promise<StorageObject[]>;
    deleteObject(options: DeleteOptions): Promise<void>;
    generatePresignedUrl(options: PresignedUrlOptions): Promise<string>;
    objectExists(key: string): Promise<boolean>;
    private getFriendlyError;
}