export declare type LogFunction = 'info' | 'warn' | 'error' | 'debug';
export declare type LogLevel = 'off' | LogFunction;
export declare class Logger {
    debug(msg: any): void;
    info(msg: any): void;
    warn(msg: any): void;
    error(msg: any): void;
    log(msg: any, level: LogFunction): void;
    isLevelEnabled(level: LogFunction): boolean;
    private logLevel;
    constructor(logLevel?: LogLevel);
}