fix: persistent tracking queue poller (#131)

Author: bgiori

packages/experiment-browser/src/integration/manager.ts

@@ -170,6 +170,7 @@ export class PersistentTrackingQueue {
   private readonly maxQueueSize: number;
   private readonly isLocalStorageAvailable = isLocalStorageAvailable();
   private inMemoryQueue: ExperimentEvent[] = [];
+  private poller: any | undefined;
   private tracker: ((event: ExperimentEvent) => boolean) | undefined;
 
   constructor(instanceName: string, maxQueueSize: number = MAX_QUEUE_SIZE) {
@@ -186,6 +187,9 @@ export class PersistentTrackingQueue {
 
   setTracker(tracker: (event: ExperimentEvent) => boolean): void {
     this.tracker = tracker;
+    this.poller = safeGlobal.setInterval(() => {
+      this.loadFlushStore();
+    }, 1000);
     this.loadFlushStore();
   }
 
@@ -196,6 +200,10 @@ export class PersistentTrackingQueue {
       if (!this.tracker(event)) return;
     }
     this.inMemoryQueue = [];
+    if (this.poller) {
+      safeGlobal.clearInterval(this.poller);
+      this.poller = undefined;
+    }
   }
 
   private loadQueue(): void {