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// deno-fmt-ignore-file
// deno-lint-ignore-file
// Copyright Joyent and Node contributors. All rights reserved. MIT license.
// Taken from Node 18.12.1
// This file is automatically generated by `tests/node_compat/runner/setup.ts`. Do not modify this file manually.
'use strict';
const common = require('../common');
const assert = require('assert');
const { MessageChannel } = require('worker_threads');
// Make sure that an infinite asynchronous .on('message')/postMessage loop
// does not lead to a stack overflow and does not starve the event loop.
// We schedule timeouts both from before the .on('message') handler and
// inside of it, which both should run.
const { port1, port2 } = new MessageChannel();
let count = 0;
port1.on('message', () => {
if (count === 0) {
setTimeout(common.mustCall(() => {
port1.close();
}), 0);
}
port2.postMessage(0);
assert(count++ < 10000, `hit ${count} loop iterations`);
});
port2.postMessage(0);
// This is part of the test -- the event loop should be available and not stall
// out due to the recursive .postMessage() calls.
setTimeout(common.mustCall(), 0);
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