code: function findLocaleData(locale) {
      var normalizedLocale = locale.toLowerCase().replace(/_/g, '-');
      var match = LOCALE_DATA[normalizedLocale];
      if (match) {
          return match;
      }
      // let's try to find a parent locale
      var parentLocale = normalizedLocale.split('-')[0];
      match = LOCALE_DATA[parentLocale];
      if (match) {
          return match;
      }
      if (parentLocale === 'en') {
          return localeEn;
      }
      throw new Error("Missing locale data for the locale \"" + locale + "\".");
  }
docs: Finds the locale data for a locale id
  
  @experimental i18n support is experimental.