/// <reference types="node" />
import Transport from "winston-transport";
import { CompleteMultipartUploadCommandOutput, S3ClientConfig } from "@aws-sdk/client-s3";
import { PassThrough } from "stream";
/**
 * Config
 */
export interface Config<T = any> {
    /**
     * bucket
     */
    bucket: string;
    /**
     * generateGruop
     */
    generateGruop?: (log: T) => string;
    /**
     * generateBucketPath
     */
    generateBucketPath?: (group: string, log: T) => string;
    /**
     * maxBufferSize
     */
    maxBufferSize?: number;
    /**
     * maxBufferCount
     */
    maxBufferCount?: number;
    /**
     * maxFileSize
     */
    maxFileSize?: number;
    /**
     * maxFileAge
     */
    maxFileAge?: number;
    /**
     * gzip
     */
    gzip?: boolean;
}
/**
 * Options
 */
export interface Options extends Transport.TransportStreamOptions {
    /**
     * s3ClientConfig
     * @see https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-s3/interfaces/s3clientconfig.html
     */
    s3ClientConfig: S3ClientConfig;
    /**
     * S3TransportConfig
     */
    s3TransportConfig: Config;
}
/**
 * StreamInfoName
 */
export declare enum StreamInfoName {
    /**
     * TotalWrittenBytes
     */
    TotalWrittenBytes = 0,
    /**
     * Stream
     */
    Stream = 1,
    /**
     * S3Upload
     */
    S3Upload = 2
}
/**
 * StreamInfo
 */
export type StreamInfo = [
    /**
     * totalWrittenBytes
     */
    totalWrittenBytes: number,
    /**
     * stream
     */
    stream: PassThrough,
    /**
     * s3Upload
     */
    s3Upload: Promise<CompleteMultipartUploadCommandOutput>
];