docs: function getLocaleExtraDayPeriods(locale, formStyle, width) {
      var data = findLocaleData(locale);
      checkFullData(data);
      var dayPeriodsData = [
          data[19 /* ExtraData */][0 /* ExtraDayPeriodFormats */],
          data[19 /* ExtraData */][1 /* ExtraDayPeriodStandalone */]
      ];
      var dayPeriods = getLastDefinedValue(dayPeriodsData, formStyle) || [];
      return getLastDefinedValue(dayPeriods, width) || [];
  }