为什么nodejs在执行完所有代码之前就退出了？

Question

随机执行下面的代码要么打印“DONE”，要么不打印，为什么会这样？ 我怎么让它每次都去

console.log("DONE");

线。

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

async function main() {
  if (isMainThread) {
    const worker = new Worker(__filename);
    let resultResolve = null;
    let resultPromise = new Promise(resolve => resultResolve = resolve);
    worker.on('message', (msg) => resultResolve(msg));
    let result = null;
    while ((result = await resultPromise) != null) {
      resultPromise = new Promise(resolve => resultResolve = resolve);
    }
    console.log("DONE");
  } else {
    for (let i = 0; i < 10000; i++) {
      parentPort.postMessage(i);
    }
    parentPort.postMessage(null);
  }
}

main();

我的猜测是，当 worker 退出并且主线程事件循环是否到达之前的

await resultPromise

行时，就会发生竞争。