import { LogLevel } from '../constants/log';
import { IDoc, ILog, ILogType } from './types/log.interfaces';
export declare class Log implements ILog {
    stored: IDoc[];
    logLevel: LogLevel;
    constructor();
    updateLogLevel(logLevel: LogLevel): void;
    /**
   *  Log functions for sdk
   *
   * @param {object | string} args An object or string
   * @returns {string} string
   * @example Universal stages for all apps
   *
   *  Log.info(1, 2, 3); // output: [INFO - (sdk)] 1, 2, 3
   */
    stringify(args: (object | string)[]): string;
    utcNow(): string;
    store(msg: string, type: ILogType): void;
    info(...args: (object | string)[]): void;
    warn(...args: (object | string)[]): void;
    error(...args: (object | string)[]): void;
    history(): IDoc[];
}
declare const log: Log;
export default log;
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