/// <reference types="node" />
export declare abstract class AzureBlobStorageClient {
    private containerURL;
    private serviceURL;
    constructor(accountAccessKey: string, accountName: string, containerName: string);
    upload(content: Buffer, mimeType: string): Promise<string>;
    uploadBase64(base64: string, mimeType: string): Promise<string>;
    download(fileName: string): Promise<unknown>;
}