import { RequestOptionsNoCapture } from '../../../types.js';
/**
 * Displays a native popup prompting the user to download a file.
 * @param url - the HTTPS URL of the file to be downloaded.
 * @param file - the suggested name for the downloaded file.
 * @param options - additional request execution options.
 * @since Mini Apps v8.0
 * @throws {FunctionNotAvailableError} The environment is unknown
 * @throws {FunctionNotAvailableError} The SDK is not initialized
 * @throws {FunctionNotAvailableError} The function is not supported
 * @throws {AccessDeniedError} User denied the action
 * @example
 * if (downloadFile.isAvailable()) {
 *   await downloadFile('https://telegram.org/js/telegram-web-app.js', 'telegram-sdk.js');
 * }
 */
export declare const downloadFile: import('../../wrappers/wrapSafe.js').SafeWrapped<(url: string, fileName: string, options?: RequestOptionsNoCapture) => import('better-promises').AbortablePromise<void>, true, never>;