Workers

app.js

const { Worker, isMainThread } = require("node:worker_threads");

const worker = new Worker("./report.js", {
  workerData: { message: "hello from app.js" },
});

console.log("Running worker: ", worker.threadId);
console.log("is main thread (app.js) => ", isMainThread);

worker.on("error", (err) =>
  console.error("error from worker => ", err.message)
);

worker.on("message", (data) => {
  console.log("message from worker => ", data);
});

report.js

const { parentPort, workerData, isMainThread } = require("node:worker_threads");

console.log("is main thread (report.js) => ", isMainThread);
console.log("message from main => ", workerData);

// throw new Error("deu ruim")

parentPort.postMessage({ id: 1, name: "pedro" });