Worker files

_main.js

const timeWorker = new Worker("worker.js");
timeWorker.postMessage({ type: "GET_CURRENT_DATE" });
timeWorker.onmessage = (evt) => {
  console.log(evt.data);
}

current-datetime-worker.js

const currentDateTimeWorker = () => {
  setInterval(() => {
    postMessage(new Date());
  }, 1000);
};

currentDateTimeWorker();

currentDateTime-worker.js

const currentDateTimeWorker = () => {
  setInterval(() => {
    postMessage(new Date());
  }, 1000);
};

currentDateTimeWorker();

main.js

const dateTimeWorker = new Worker("current-datetime-worker.js");
worker.onmessage = (e) => {
  console.log(e.data);
};

terminate.js

const timeWorker = new Worker("worker.js");
//Terminate time worker
timeworker.terminate();

worker.js

self.onmessage = (evt) => {
  if (evt.data && evt.data.type === "GET_CURRENT_DATE") {
    postMessage(new Date());
  }
};