import { Request } from 'express';
import { StorageEngine } from 'multer';
import { MulterOutFile } from '../interfaces/multer-out-file.interface';
import { StorageEngineOptions } from '../types/storage-engine.options';
export declare class BlobStorageEngine implements StorageEngine {
    private options;
    private containerName;
    private containerClient;
    private sharedKeyCredential;
    constructor(options: StorageEngineOptions);
    _handleFile(req: Request, file: Express.Multer.File, callback: (error?: any, info?: Partial<MulterOutFile>) => void): Promise<void>;
    private streamToBuffer;
    _removeFile(_req: Request, file: MulterOutFile, callback: (error: Error | null) => void): void;
    private generateBlobUrl;
    private deleteBlob;
    private getBlobProperties;
}