import { Writable, WritableOptions } from 'stream';
import { ILogObject } from './ILogObject';
import { ILogFormatter } from './ILogFormatter';
export interface ILogFileStreamConfig {
    path: string;
    formatter: ILogFormatter;
}
export declare class LogFileStream extends Writable {
    private $stream;
    private $formatter;
    static create(config: ILogFileStreamConfig, streamOpts?: WritableOptions): Promise<LogFileStream>;
    private constructor();
    private $formatLogObject;
    _write(chunk: ILogObject, encoding: BufferEncoding, callback: (error?: Error | null) => void): void;
    _destroy(error: Error | null, callback: (error?: Error | null) => void): void;
}