import { LoggerOptions as LoggerOptionsBase } from 'pino';
export declare const loggerLevels: readonly ["fatal", "error", "warn", "info", "debug", "trace"];
export declare type LoggerLevel = typeof loggerLevels[number];
export interface LoggerOptions extends Omit<LoggerOptionsBase, 'level'> {
    level: LoggerLevel;
}
export declare function isLoggerLevel(arg?: string): arg is LoggerLevel;
export declare const DEFAULT_LOGGER_OPTIONS: LoggerOptions;