/**
 * @class Output
 */
export declare class Output {
    /**
     * @private
     * @type {number}
     * @memberof Output
     */
    private verbosity;
    /**
     * @private
     * @type {Function}
     * @memberof Output
     */
    private realStdout;
    /**
     * Mutes writing to stdout.
     *
     * @memberof Output
     */
    mute(): void;
    /**
     * Unmutes writing to stdout.
     *
     * @memberof Output
     */
    unmute(): void;
    /**
     * Sets the verbosity of the output.
     *
     * @param {number} level
     * @memberof Output
     */
    setVerbosity(level: number): void;
    /**
     * Gets the current verbosity of the output.
     *
     * @returns {number}
     * @memberof Output
     */
    getVerbosity(): number;
    /**
     * Returns whether the verbosity is quiet.
     *
     * @returns {boolean}
     * @memberof Output
     */
    isQuiet(): boolean;
    /**
     * Returns whether the verbosity is normal.
     *
     * @returns {boolean}
     * @memberof Output
     */
    isNormal(): boolean;
    /**
     * Returns whether the verbosity is verbose.
     *
     * @returns {boolean}
     * @memberof Output
     */
    isVerbose(): boolean;
    /**
     * Returns whether the verbosity is debug.
     *
     * @returns {boolean}
     * @memberof Output
     */
    isDebug(): boolean;
}
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