docs: function registerComponents(elemNames) {
      if (!elemNames) { return; }
  
      var elemNameDashCase, elemNameCamelCase;
      for (var i = 0; i < elemNames.length; i++) {
          elemNameDashCase = elemNames[i];
          elemNameCamelCase = utils.dashToCamelCase(elemNameDashCase);
          elems[elemNameCamelCase] = makeElem(elemNameDashCase);
      }
  }