/**
 * Download file using specified URL.
 * @param blobUrl
 * @param filename
 */
export declare function downloadUrl(fileUrl: string, filename?: string): boolean;
/**
 * Download binary data.
 * @param data
 * @param filename
 * @param contentType
 */
export declare function downloadData(data: Blob | BlobPart | Uint8Array | ArrayBuffer | ArrayBufferView | string, filename?: string, contentType?: string): boolean;