import { StorageService } from './types';
export declare class GCSStorageService implements StorageService {
    private storage;
    private bucket;
    constructor();
    uploadFile(filePath: string, key: string): Promise<string>;
    downloadFile(key: string): Promise<Buffer>;
    deleteFile(key: string): Promise<void>;
    getFileUrl(key: string): Promise<string>;
    cleanup(): Promise<void>;
}
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