import { Application } from 'egg';
import { Logger, LoggerLevel } from 'egg-logger';
export declare class LessLogger {
    private readonly _logger;
    private readonly threshold;
    private lastTime;
    private discarded;
    private groups;
    constructor(threshold: number, logger: Logger);
    static registerForApp(app: Application, threshold: number, name?: string): void;
    private shouldLog;
    log(level: LoggerLevel, args: any[], meta?: object): void;
    error(msg: any, ...args: any[]): void;
    warn(msg: any, ...args: any[]): void;
    info(msg: any, ...args: any[]): void;
    debug(msg: any, ...args: any[]): void;
    write(msg: string): void;
    group(key: string, threshold?: number): LessLogger;
}