Instead this code, you can use following code, if you add addDependency('tp3/mashups/componenteventlistener')
```javascript
        var board = new ComponentEventListener('board_plus');
        board.on('start.lifecycle', _.bind(function () {
            this.cards = [];
        }, self));
        board.on('view.card.skeleton.built', _.bind(self.cardAdded, self));
```