openvidu-testapp: rollback event circular dependency

openvidu-testapp/src/app/components/test-sessions/test-sessions.component.ts

@@ -38,19 +38,7 @@ export class TestSessionsComponent implements OnInit, OnDestroy {
 
     this.eventsInfoSubscription = this.testFeedService.newLastEvent$.subscribe(
       newEvent => {
-        const getCircularReplacer = () => {
-          const seen = new WeakSet();
-          return (key, value) => {
-            if (typeof value === "object" && value !== null) {
-              if (seen.has(value)) {
-                return;
-              }
-              seen.add(value);
-            }
-            return value;
-          };
-        };
-        (window as any).myEvents += ('<br>' + JSON.stringify(newEvent, getCircularReplacer()));
+        (window as any).myEvents += ('<br>' + this.stringifyEventNoCircularDependencies(newEvent));
       });
   }
 
@@ -112,4 +100,28 @@ export class TestSessionsComponent implements OnInit, OnDestroy {
     this.loadSubs(subs);
   }
 
+  stringifyEventNoCircularDependencies(event: Event): string {
+    const cache = [];
+    return JSON.stringify(event, function (key, value) {
+      if (key !== 'ee' && key !== 'openvidu') {
+        if (typeof value === 'object' && value !== null) {
+          if (cache.indexOf(value) !== -1) {
+            // Duplicate reference found	
+            try {
+              // If this value does not reference a parent	
+              return JSON.parse(JSON.stringify(value));
+            } catch (error) {
+              return;
+            }
+          }
+          // Store value in our collection	
+          cache.push(value);
+        }
+        return value;
+      } else {
+        return;
+      }
+    });
+  }
+
 }