How to use the log4js.shutdown function in log4js

// $ExpectError
log4js.configure({
  appenders: [{}],
});

log4js.getLogger().log('test');
log4js.getLogger('test').error('test', 'test');

// $ExpectError
log4js.getLogger('test').test('test');

// $ExpectError
log4js.getLogger(1);

log4js.shutdown(() => {});

// $ExpectError
log4js.shutdown();

log4js.connectLogger(log4js.getLogger(), {});

const error = log4js.levels.ERROR;

process.on('unhandledRejection', error => {
  log4js.getLogger().fatal('Unhandled rejection:', error);
  log4js.shutdown(() => process.exit(1));
});

process.on('unhandledRejection', error => {
    log4js.getLogger().fatal('Unhandled rejection:', error);
    log4js.shutdown(() => process.exit(1));
  });

function done() {
			if (_shutdownTimer) clearTimeout(_shutdownTimer);
			logger.info("Exiting after all tasks ended, pid: " + process.pid + " code: " + (code || 0) + " (code=1 means hard)");
			log4js.shutdown(function() {
				process.exit(code || 0);
			});
		}
		var data = {

shutdown(){
        log4js.shutdown(this.postShutdown());
    }
    postShutdown(){

logger.shutdown = (callback) => {
	log4js.shutdown(callback);
}

export function flushLogsAndAbort(): void {
  log4js.shutdown(() => process.abort());
}

N.logger.shutdown = function (cb) {
    log4js.shutdown(cb);
  };

thelogger.shutdown = function(cb) {
        log4js.shutdown(cb);
    }
    return thelogger;

process.on('uncaughtException', err => {
  logger.fatal('Uncaught exception:', err);
  log4js.shutdown(() => process.abort());
});