import { LogLevelValue } from './logLevel.js';
import ProgressBar from './progressBar.js';
/**
 * {@link Logger} is a class that deals with the formatting and outputting log messages to a stream.
 */
export default class Logger {
    private logLevel;
    private readonly stream;
    private readonly loggerPrefix?;
    constructor(logLevel?: LogLevelValue, stream?: NodeJS.WritableStream, loggerPrefix?: string);
    getLogLevel(): LogLevelValue;
    setLogLevel(logLevel: LogLevelValue): void;
    getStream(): NodeJS.WritableStream;
    /**
     * Determine if this {@link Logger}'s underlying stream is a TTY stream or not.
     */
    isTTY(): boolean;
    private readonly print;
    /**
     * Print a newline.
     */
    newLine(): void;
    /**
     * Format a log message for a given {@link LogLevelValue}.
     */
    formatMessage(logLevel: LogLevelValue, message: string): string;
    trace: (message?: unknown) => void;
    debug: (message?: unknown) => void;
    info: (message?: unknown) => void;
    warn: (message?: unknown) => void;
    error: (message?: unknown) => void;
    notice: (message?: unknown) => void;
    /**
     * Print the CLI header.
     */
    printHeader(): void;
    /**
     * Print a colorized yargs help string.
     */
    colorizeYargs(help: string): void;
    /**
     * Create a {@link ProgressBar} with a reference to this {@link Logger}.
     */
    addProgressBar(name: string, symbol?: string, initialTotal?: number): ProgressBar;
    /**
     * Return a copy of this Logger with a new string prefix.
     */
    withLoggerPrefix(prefix: string): Logger;
}