export interface LoggerConfigs {
    /**
     * Only logs with level <= of LOG_LEVEL will be printed.
     */
    LOG_LEVEL: LoggerLevels | string;
    /**
     * Either default 'text' or 'json'
     */
    LOG_OUTPUT: LoggerOutput;
    /**
     * When true, ignores LOG_LEVEL when printing debugging level logs.
     *
     * Useful to quickly enable debug logs when debugging (duh).
     */
    DEBUGGING: boolean;
    /**
     * This suppresses all the logs.
     *
     * The reason why it's called TESTING and not SUPPRESS_ALL_LOGS is because TESTING is what's used by vitest and other unit testing tools.
     *
     * Unit tests are exactly the time where you don't want to clog your console with unrelated logs.
     */
    TESTING: boolean;
}
/**
 * 'test' is default string logs to stdout/stderr.
 *
 * 'json' is used in deployed environments to format output in json so that Promtail/Loki/Grafana Stacks can easily deal with them.
 */
export type LoggerOutput = 'text' | 'json';
/**
 * 'unknown' is not inteded to be used on purpose.
 *
 * It is only assigned whenever something in configuration fails so that it still has a value Grafana can understand, rather than having Grafana try its best and match it at random.
 */
export declare enum LoggerLevels {
    'unknown' = 0,
    'trace' = 1,
    'debug' = 2,
    'info' = 3,
    'warning' = 4,
    'error' = 5,
    'critical' = 6
}
export declare class Logger {
    private static readonly config;
    private static jsonlogger;
    /**
     * Forces reloading all configs from 'process.env'.
     *
     * Useful when you populate environment at runtime after ez-ts-logger is already imported, for example when using 'dotenv'.
     */
    static reloadEnvConfigs(): void;
    /**
     * Updates the current config.
     * @param configs - An object with every config you want to change.
     */
    static changeConfigs(configs: Partial<LoggerConfigs>): void;
    /**
     * Returns all current configs.
     * @returns The current configuration object, such as active log levels and output format.
     */
    static currentConfigs(): LoggerConfigs;
    /**
     * Prints a 'trace' level message.
     * @params args - Can be a string or a JSON style object
     */
    static trace(args: string | Record<string, any>): void;
    /**
     * Prints a 'debug' level message.
     * @params args - Can be a string or a JSON style object
     */
    static debug(args: string | Record<string, any>): void;
    /**
     * Prints an 'info' level message.
     *
     * Same as Logger.info().
     * @params args - Can be a string or a JSON style object.
     */
    static log(args: string | Record<string, any>): void;
    /**
     * Prints an 'info' level message.
     * @params args - Can be a string or a JSON style object.
     */
    static info(args: string | Record<string, any>): void;
    /**
     * Prints a 'warning' level message.
     *
     * Same as Logger.warn().
     * @params args - Can be a string, a JSON style object, an instance of Error or any CustomError that extends Error.
     */
    static warning(args: string | Error | Record<string, any>): void;
    /**
     * Prints a 'warning' level message.
     * @params args - Can be a string, a JSON style object, an instance of Error or any CustomError that extends Error.
     */
    static warn(args: string | Error | Record<string, any>): void;
    /**
     * Prints an 'error' level message.
     * @params args - Can be a string, a JSON style object, an instance of Error or any CustomError that extends Error.
     */
    static error(args: string | Error | Record<string, any>): void;
    /**
     * Prints an 'error' level message.
     *
     * Then throws the provided error.
     * @params error - Can be an instance of Error or any CustomError that extends Error.
     */
    static errorAndThrow(error: Error | unknown): void;
    /**
     * Print a 'critical' level message.
     * @params args - Can be a string, a JSON style object, an instance of Error or any CustomError that extends Error.
     */
    static critical(args: string | Error | Record<string, any>): void;
    /**
     * Prints a 'critical' level message.
     *
     * Then throws the provided error.
     * @params error - Can be an instance of Error or any CustomError that extends Error.
     */
    static criticalAndThrow(error: Error | unknown): void;
}