1'use strict';
2const common = require('../common');
3
4const { Worker } = require('worker_threads');
5const { createHook } = require('async_hooks');
6const { strictEqual } = require('assert');
7
8let handle;
9
10createHook({
11  init(asyncId, type, triggerAsyncId, resource) {
12    if (type === 'WORKER') {
13      handle = resource;
14      this.disable();
15    }
16  }
17}).enable();
18
19const w = new Worker('', { eval: true });
20
21strictEqual(handle.hasRef(), true);
22w.unref();
23strictEqual(handle.hasRef(), false);
24w.ref();
25strictEqual(handle.hasRef(), true);
26
27w.on('exit', common.mustCall((exitCode) => {
28  strictEqual(exitCode, 0);
29  strictEqual(handle.hasRef(), true);
30  setTimeout(common.mustCall(() => {
31    strictEqual(handle.hasRef(), undefined);
32  }), 0);
33}));
34