/**
 * Copyright Valkey GLIDE Project Contributors - SPDX Identifier: Apache-2.0
 */
export type LevelOptions = "error" | "warn" | "info" | "debug" | "trace" | "off";
export declare class Logger {
    private static _instance;
    private static logger_level;
    private constructor();
    /**
     * take the arguments from the user and provide to the core-logger (see ../logger-core)
     * if the level is higher then the logger level (error is 0, warn 1, etc.) simply return without operation
     * if a logger instance doesn't exist, create new one with default mode (decided by rust core, normally - level: error, target: console)
     * logIdentifier arg is a string contain data that suppose to give the log a context and make it easier to find certain type of logs.
     * when the log is connect to certain task the identifier should be the task id, when the log is not part of specific task the identifier should give a context to the log - for example, "socket connection".
     * External users shouldn't use this function.
     */
    static log(logLevel: LevelOptions, logIdentifier: string, message: string): void;
    /**
     * Initialize a logger if it wasn't initialized before - this method is meant to be used when there is no intention to replace an existing logger.
     * The logger will filter all logs with a level lower than the given level,
     * If given a fileName argument, will write the logs to files postfixed with fileName. If fileName isn't provided, the logs will be written to the console.
     * To turn off the logger, provide the level "off".
     */
    static init(level?: LevelOptions, fileName?: string): void;
    /**
     * configure the logger.
     * the level argument is the level of the logs you want the system to provide (error logs, warn logs, etc.)
     * the filename argument is optional - if provided the target of the logs will be the file mentioned, else will be the console
     * To turn off the logger, provide the level "off".
     */
    static setLoggerConfig(level: LevelOptions, fileName?: string): void;
}