I wrote the following code and not sure why the worker is not executing:

main thread code

async runWorker(inputdata) {
    return new Promise((resolve, reject) => {
        try {
            const testWorker = new Worker('./worker.js', {
                workerData: inputData,
                stdin: true
            });

            testWorker.on('error', (err) => {
                console.log('error');
                reject(err.message);
            });

            testWorker.on('message', (data) => {
                console.log('received data');
                resolve(data);
            })
        } catch (error) {
            reject(error.message || error)
        }
    });
}

worker.js

import { parentPort } from "worker_threads";

async function worker() {
  console.log("started");
  parentPort.postMessage("fixed!");
}

worker();

What is wrong with my code?