code: function sortByOrdinal(extensions, done) {
      const sorted = extensions.sort((a, b) => {
          if (a.ordinal || b.ordinal) {
              if (!a.ordinal) return 1;
              if (!b.ordinal) return -1;
              if (a.ordinal < b.ordinal) return -1;
              return 1;
          }
          return a.pluginId.localeCompare(b.pluginId);
      });
  
      if (done) {
          done(sorted);
      }
  
      return sorted;
  }
docs: Sort extensions by ordinal if defined, then fallback to pluginId.
  @param extensions
  @param [done]