fix(devtools): make sure we dont fail on null elements

projects/ng-devtools-backend/src/lib/observer/index.ts

@@ -63,7 +63,8 @@ const insertElementProfile = (frames: ElementProfile[], position: ElementPositio
   for (let i = 0; i < position.length - 1; i++) {
     const pos = position[i];
     if (!frames[pos]) {
-      debugger;
+      // console.warn('Unable to find parent node for', frames);
+      return;
     }
     frames = frames[pos].children;
   }

projects/ng-devtools/src/lib/devtools-tabs/directive-explorer/profiler/recording/timeline/format-records.ts

@@ -28,6 +28,11 @@ const getLabel = (element: ElementProfile) => {
 const addFrame = (nodes: FlamegraphNode[], elements: ElementProfile[]): number => {
   let timeSpent = 0;
   elements.forEach(element => {
+    // Possibly undefined because of the insertion
+    // on the backend.
+    if (!element) {
+      return;
+    }
     const node: FlamegraphNode = {
       value: element.directives.reduce((a, c) => a + c.lifecycle + c.changeDetection, 0),
       label: getLabel(element),