const worker = new Worker(
               URL.createObjectURL(
               new Blob(
                  ["requestAnimationFrame(() => this.postMessage('requestAnimationFrame in web-worker process'))"]
                  , { type: "text/javascript" })));

worker.addEventListener("message", e =>
{
  console.log(e.data);
});


requestAnimationFrame(() => console.log("requestAnimationFrame in main process"));