Add `is` method in Component

src/dom_components/model/Component.js

@@ -169,6 +169,18 @@ module.exports = Backbone.Model.extend(Styleable).extend({
     this.init();
   },
 
+  /**
+   * Check component's type
+   * @param  {string}  type Component type
+   * @return {Boolean}
+   * @example
+   * model.is('image')
+   * // -> false
+   */
+  is(type) {
+    return !!this.get('type') == type;
+  },
+
 
   /**
    * Update attributes of the model

src/dom_components/model/ComponentTableRow.js

@@ -1,42 +1,36 @@
-var Component = require('./Component');
+const Component = require('./Component');
 
 module.exports = Component.extend({
 
-  defaults: _.extend({}, Component.prototype.defaults, {
+  defaults: { ...Component.prototype.defaults,
       type: 'row',
       tagName: 'tr',
+      draggable: ['thead', 'tbody', 'tfoot'],
       droppable: ['th', 'td']
-  }),
+  },
 
   initialize(o, opt) {
     Component.prototype.initialize.apply(this, arguments);
 
     // Clean the row from non cell components
-    var cells = [];
-    var components = this.get('components');
+    const cells = [];
+    const components = this.get('components');
     components.each(model => {
-      if(model.get('type') == 'cell'){
+      if (model.get('type') == 'cell') {
         cells.push(model);
       }
     });
     components.reset(cells);
   }
 
-},{
-
-  /**
-   * Detect if the passed element is a valid component.
-   * In case the element is valid an object abstracted
-   * from the element will be returned
-   * @param {HTMLElement}
-   * @return {Object}
-   * @private
-   */
+}, {
   isComponent(el) {
-    var result = '';
-    if(el.tagName == 'TR'){
-      result = {type: 'row'};
+    let result = '';
+
+    if (el.tagName == 'TR') {
+      result = { type: 'row' };
     }
+
     return result;
   },