Employed ObservableArray.count for phetsims/axon#279

phetsims · May 18, 2020 · b447275 · b447275
1 parent 6c59ad6
commit b447275
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/js/prisms/view/PrismToolboxNode.js b/js/prisms/view/PrismToolboxNode.js
@@ -69,7 +69,7 @@ class PrismToolboxNode extends Node {
       const prismIcon = createPrismIcon( prism );
 
       const listener = () => {
-        const count = _.filter( prismsModel.prisms.getArray(), p => p.typeName === prism.typeName ).length;
+        const count = prismsModel.prisms.count( p => p.typeName === prism.typeName );
         prismIcon.visible = count < MAX_PRISM_COUNT;
       };
       prismsModel.prisms.addItemAddedListener( listener );
@@ -247,4 +247,4 @@ class PrismToolboxNode extends Node {
 
 bendingLight.register( 'PrismToolboxNode', PrismToolboxNode );
 
-export default PrismToolboxNode;
+export default PrismToolboxNode;