title: Use closure actions, unless you need bubbling
body: <p>I don't know what's wrong in my code.
  <strong>template/components/item.hbs:</strong></p>
  
  <pre><code>&lt;div class="form-group"&gt;
          &lt;div class="col-sm-offset-2 col-sm-10"&gt;
              &lt;button type="submit" class="btn btn-default" {{action 'buttonClicked' item}} disabled={{unless item.isValid true}}&gt;{{buttonLabel}}&lt;/button&gt;
          &lt;/div&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p><strong>components/item.js:</strong></p>
  
  <pre><code>import Component from '@ember/component';
  
  export default Component.extend({
      buttonLabel: 'Save',
  
      actions: {
          buttonClicked(param) {
              this.sendAction('action', param);
          }
      }
  });
  </code></pre>
  
  <p>Ember/library-app/app/components/item.js
    8:13  error  Use closure actions, unless you need bubbling  ember/closure-actions</p>