How to use the @react-native-community/cli-tools.isPackagerRunning function in @react-native-community/cli-tools

'You can disable it using "--no-jetifier" flag.',
      )}`,
    );

    try {
      await execa(require.resolve('jetifier/bin/jetify'), {stdio: 'inherit'});
    } catch (error) {
      throw new CLIError('Failed to run jetifier.', error);
    }
  }

  if (!args.packager) {
    return buildAndRun(args);
  }

  return isPackagerRunning(args.port).then(result => {
    if (result === 'running') {
      logger.info('JS server already running.');
    } else if (result === 'unrecognized') {
      logger.warn('JS server not recognized, continuing with build...');
    } else {
      // result == 'not_running'
      logger.info('Starting JS server...');
      try {
        startServerInNewWindow(
          args.port,
          args.terminal,
          config.reactNativePath,
        );
      } catch (error) {
        logger.warn(
          `Failed to automatically start the packager server. Please run "react-native start" manually. Error details: ${