import { Worker, isMainThread, parentPort, workerData } from 'node:worker_threads';
import { once } from 'node:events';
if (isMainThread) {
  const buffer = new Uint8Array([2, 4]).buffer;
  const worker = new Worker(new URL(import.meta.url), {
    workerData: buffer,
    transferList: [buffer],
  });
  const exited = once(worker, 'exit');
  const [total] = await once(worker, 'message');
  await exited;
  console.log(total, buffer.byteLength);
} else {
  parentPort.postMessage([...new Uint8Array(workerData)].reduce((a, b) => a + b, 0));
}