export default class Logger {
    private eventEmitter;
    info(...messages: any[]): void;
    warn(...messages: any[]): void;
    error(...messages: any[]): void;
    debug(...messages: any[]): void;
    onInfo(cb: any): void;
    onWarn(cb: any): void;
    onError(cb: any): void;
    onDebug(cb: any): void;
}