/**
 * Responsible for sending log requests to the back-end with
 * error information.
 *
 * @export
 * @abstract
 * @class Logger
 */
export declare abstract class Logger {
    /**
     * Log an error to the server.
     *
     * @static
     * @param {Error} err
     * @memberof Logger
     */
    static log(err: Error): Promise<void>;
    /**
     * Build a error message with more information, including
     * user's browser and error stack trace.
     *
     * @private
     * @static
     * @param {Error} err Error to get stack and message from.
     * @return {string}
     * @memberof Logger
     */
    private static buildMessage;
}