sw-message.js

// send message to service worker
function handleClickEven() {
  worker.postMessage({ action: "skipWaiting" });
}

// receive message
self.addEventListener("message", (event) => {
  if (event.data.action === "skipWaiting") {
    // skip waiting to apply the new version of service worker
    self.skipWaiting(); 
  }
});