Use Buffer.from().toString() instead of atob() to decode task payload

src/emulator/tasksEmulator.ts

@@ -24,7 +24,7 @@
     oidcToken?: {
       serviceAccountEmail: string;
     };
     body: any;
     headers: { [key: string]: string };
   };
 }
@@ -163,8 +163,8 @@
     return this.running;
   }
 
   getStatistics() {
     const stats: Record<string, any> = {};
     for (const [key, queue] of Object.entries(this.queues)) {
       stats[key] = queue.getStatistics();
     }
@@ -265,10 +265,12 @@
         return;
       }
 
       req.body.task.name =
         req.body.task.name ??
         `/projects/${projectId}/locations/${locationId}/queues/${queueName}/tasks/${Math.floor(Math.random() * Number.MAX_SAFE_INTEGER)}`;
-      req.body.task.httpRequest.body = JSON.parse(atob(req.body.task.httpRequest.body));
+      req.body.task.httpRequest.body = JSON.parse(
+        Buffer.from(req.body.task.httpRequest.body, "base64").toString("utf-8"),
+      );
 
       const task = req.body.task as Task;