class Space {
      props = { direction: String, size: String };
      constructor() {
          let childrens = $elements.children();
          $elements.empty();
          angular.forEach(childrens, (element, index) => {
              let item = angular
                  .element("<div>")
                  .addClass("es-space-item")
                  .append(element);
              $elements.append(item);
          });
      }
  }