import { FileTransportOptions } from './types';
import { VerbaTransport } from '../types';
/**
 * A Verba Transport for outputting to a file.
 *
 * Note: If using this Transport, be sure to call `await log.close()` before your program exits
 * to ensure that the stream finishes writing log messages to it.
 *
 * @example
 * import verba, { fileTransport } from 'verba'
 * const log = verba({
 *   transports: [fileTransport({ outfile: 'log.txt' })]
 * })
 */
export declare const fileTransport: <TCode extends string | number | undefined = string | number | undefined, TData extends any = any>(options?: FileTransportOptions<TCode, TData>) => VerbaTransport<TCode, TData>;