// Type definitions for koa-logger 3.1
// Project: https://github.com/koajs/logger
// Definitions by: Joshua DeVinney <https://github.com/geoffreak>
//                 Tomek Łaziuk <https://github.com/tlaziuk>
// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
// TypeScript Version: 2.3

import { Middleware } from 'koa';

type Transporter = (
    str: string,
    args: [string, string, string, number | undefined, string | undefined, string | undefined],
) => void;

interface TransporterOpts {
    transporter: Transporter;
}

declare function KoaLogger(opts?: Transporter | TransporterOpts): Middleware;
declare namespace KoaLogger {}
export = KoaLogger;