import pino from "pino";
export declare type Logger = pino.Logger;
/** instance for logging to file */
export declare let logToFile: Logger | undefined;
export interface Options extends pino.LoggerOptions {
    /** location of log files */
    logDir?: string;
    /** number of milliseconds - default 604800000 for 7 days */
    retentionTime?: number;
}
/** @returns a previously instantiated instance of Pino that logs to an automatically generated file in logs folder in root directory */
export declare function createLogger(options?: Options): Promise<Logger>;
interface WriteLogOptions {
    stdout?: boolean;
    level?: pino.Level;
}
/** write message to both file and/or console */
export declare function writeLog(message: any, config?: WriteLogOptions): void;
export {};