export declare const LEVELS: {
    default: string;
    60: string;
    50: string;
    40: string;
    30: string;
    20: string;
    10: string;
};
export declare const LEVELS_MAP: {
    trace: number;
    debug: number;
    info: number;
    warn: number;
    error: number;
    fatal: number;
    silent: number;
};