import { LogEntry, LogMessageType } from './LogEntry.js';
/**
 * Defines the interface of a logger used by all the modules.
 */
export declare class LoggerInterface {
    /** The log level number */
    _level: number;
    /**
     * sets a new log level
     * @param level -  The logLevel as number or String value
     */
    set level(level: number | string);
    /**
     * Returns the current log level
     *
     * @returns level - The logLevel as string
     */
    get level(): string;
    /**
     * returns the logLevel as a number
     * @param level - The loglevel as a string
     * @returns The loglevel as a number
     */
    protected getLevelNumber(level: string): number;
    /**
     * Returns the logLevel as a string
     * @param level - The loglevel as a number
     * @returns The loglevel as a string
     */
    protected getLevelName(level: number): string;
    /**
     * Do the logging
     * @param level - The log level of the current entry
     * @param message - The data to log
     */
    protected log(level: string, message: LogMessageType): void;
    /**
     * This function converts a log message into a log entry
     * @param level - The log level of the current entry
     * @param message - The data to log
     * @returns The log entry
     */
    protected getLogEntry(level: string, message: LogMessageType): LogEntry;
    /**
     * Writes the log, or do what ever. At this point in time
     * the logs with the wrong level are already filtered
     * @param level - The log level of the current entry
     * @param entry - The log entry
     */
    protected writeLog(level: string, // eslint-disable-line @typescript-eslint/no-unused-vars
    entry: LogEntry): void;
    /**
     * Logs the given message with the level 'debug'
     * @param message - The message or data to log
     */
    debug(message: LogMessageType): void;
    /**
     * Logs the given message with the level 'info'
     * @param message - The message or data to log
     */
    info(message: LogMessageType): void;
    /**
     * Logs the given message with the level 'warning'
     * @param message - The message or data to log
     */
    warning(message: LogMessageType): void;
    /**
     * Logs the given message with the level 'error'
     * @param message - The message or data to log
     */
    error(message: LogMessageType): void;
    /**
     * Logs the given message with the level 'fatal'
     * @param message - The message or data to log
     */
    fatal(message: LogMessageType): void;
    /**
     * Returns a time string for the log entry
     * @returns The current time in the format used by this logger
     */
    protected getTime(): string;
}
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