Merge pull request #12 from tallarium/better-ignore-error

the error parameter is often undefined

addon/instance-initializers/new-relic.js

@@ -10,7 +10,11 @@ export function initialize() {
   function mustIgnoreError(error) {
     // Ember 2.X seems to not catch `TransitionAborted` errors caused by regular redirects. We don't want these errors to show up in NewRelic so we have to filter them ourselfs.
     // Once the issue https://github.com/emberjs/ember.js/issues/12505 is resolved we can remove this ignored error.
-    return (error.name === 'TransitionAborted');
+    if (Ember.isNone(error)) {
+      return false;
+    }
+    const errorName = Ember.get(error, 'name');
+    return errorName === 'TransitionAborted';
   }
 
   function handleError(error) {
@@ -24,7 +28,9 @@ export function initialize() {
       // Ignore
     }
 
-    console.error(error.stack);
+    if (error && error.stack) {
+      console.error(error.stack);
+    }
   }
 
   function generateError(cause, stack) {