Adding spinner to list command

listWithSpinner.js

gEvent
  .command('list')
  .option('-f, --from [date]', 'Get events from the date[chrono based date parsing]')
  .option('-t, --to [date]', 'Get events until the date[chrono based date parsing]')
  .option('-r, --results <events>', 'Number of events to show')
  .description('List google event')
  .action(async function(args, callback) {
    const spinner = new Spinner('Syncing data.. %s');
    spinner.setSpinnerString('▖▘▝▗');
    spinner.start();

    const calendar = google.calendar({
      version: 'v3',
      auth: oauth2Client
    });

    let options = {
      calendarId: 'primary',
      singleEvents: true,
      maxResults: 10
    };

    if(args.options.from) {
      const time = chrono.parseDate(args.options.from);
      if (time) {
        options.timeMin = time.toISOString();
      } else {
        this.log(Yellow('Warning: cannot parse from date'));
      }
    }

    if(args.options.to) {
      const time = chrono.parseDate(args.options.to);
      if (time) {
        options.timeMax = time.toISOString();
      } else {
        this.log(Yellow('Warning: cannot parse to date'));
      }
    }

    if(args.options.results) options.maxResults = args.options.results;

    const res = await calendar.events.list(options);
    spinner.stop();

    const data = res.data;
    this.log(Email('Email: '), data.summary);
    this.log();

    data.items.forEach(({ summary, start, end, location, htmlLink }) => {
      this.log(Summary(summary));
      this.log();
      const startTime = moment(start.dateTime).format('MMMM Do YYYY, h:mm:ss a');
      const endTime = moment(end.dateTime).format('MMMM Do YYYY, h:mm:ss a');
      this.log(Time('Start Time: '), startTime, '    ', Time('Start Time: '), endTime);
      this.log(Location(location || 'Location is not available.'));
      this.log(htmlLink);
      this.log();
      this.log();
    });
    callback();
  });