test/parallel/test-worker-cleanexit-with-moduleload.js

'use strict';
const common = require('../common');

// Harden the thread interactions on the exit path.
// Ensure workers are able to bail out safe at
// arbitrary execution points. By using a number of
// internal modules as load candidates, the expectation
// is that those will be at various control flow points
// preferrably in the C++ land.

const { Worker } = require('worker_threads');
const modules = [ 'fs', 'assert', 'async_hooks', 'buffer', 'child_process',
                  'net', 'http', 'os', 'path', 'v8', 'vm'
];
if (common.hasCrypto) {
  modules.push('https');
}

for (let i = 0; i < 10; i++) {
  new Worker(`const modules = [${modules.map((m) => `'${m}'`)}];` +
    'modules.forEach((module) => {' +
    'const m = require(module);' +
    '});', { eval: true });
}

// Allow workers to go live.
setTimeout(() => {
  process.exit(0);
}, 200);