fix cose-bilkent by making embers native prototype enhancements not enumerable

app/app.js

@@ -7,6 +7,11 @@ let App;
 
 Ember.MODEL_FACTORY_INJECTIONS = true;
 
+
+avoidEnumerableNativeExtensions(Array.prototype);
+avoidEnumerableNativeExtensions(Function.prototype);
+avoidEnumerableNativeExtensions(String.prototype);
+
 App = Ember.Application.extend({
   modulePrefix: config.modulePrefix,
   podModulePrefix: config.podModulePrefix,
@@ -16,3 +21,16 @@ App = Ember.Application.extend({
 loadInitializers(App, config.modulePrefix);
 
 export default App;
+
+// ember (via ember-runtime) sets native prototype enhancements like .property/.observer, but as enumerable
+// we need to fix enumerability since it breaks cose-bilkent and sometimes cytoscape
+function avoidEnumerableNativeExtensions(proto) {
+    Object.keys(proto) // already gets all enumerables, no need to filter
+        .map(key => {
+            return { key, descriptor: Object.getOwnPropertyDescriptor(proto, key) };
+        })
+        .forEach(obj => {
+            obj.descriptor.enumerable = false;
+            Object.defineProperty(proto, obj.key, obj.descriptor);
+        });
+}
\ No newline at end of file

app/components/architecture-viewer.js

@@ -4,12 +4,12 @@ import Themes from './architecture-visualisation-cytoscape/themes';
 export default Ember.Component.extend({
     graph: null,
     entityDetails: null,
-    layoutAlgorithm: 'cose',
+    layoutAlgorithm: 'cose-bilkent',
     theme: Themes[Object.keys(Themes)[0]], // first theme
     themes: Object.keys(Themes),
     layoutAlgorithms: [
         'cose',
-        //'cose-bilkent', // broken - see https://github.com/cytoscape/cytoscape.js-cose-bilkent/issues/18
+        'cose-bilkent',
         'cola',
         'grid',
         'concentric',

config/environment.js

@@ -11,6 +11,7 @@ module.exports = function(environment) {
         // Here you can enable experimental features on an ember canary build
         // e.g. 'with-controller': true
       }
+      //EXTEND_PROTOTYPES: true // (true is default) See avoidEnumerableNativeExtensions in app.js
     },
 
     APP: {
@@ -19,6 +20,7 @@ module.exports = function(environment) {
     }
   };
 
+
   if (environment === 'development') {
     // ENV.APP.LOG_RESOLVER = true;
     // ENV.APP.LOG_ACTIVE_GENERATION = true;