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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 16.13.0// This file is automatically generated by "node/_tools/setup.ts". Do not modify this file manually
// Flags: --expose-internals'use strict';require('../common');const assert = require('assert');const net = require('net');const { internalBinding } = require('internal/test/binding');const TCPWrap = internalBinding('tcp_wrap').TCP;
const echoServer = net.createServer((conn) => {  conn.end();});
const ref = TCPWrap.prototype.ref;const unref = TCPWrap.prototype.unref;
let refCount = 0;
TCPWrap.prototype.ref = function() {  ref.call(this);  refCount++;  assert.strictEqual(refCount, 0);};
TCPWrap.prototype.unref = function() {  unref.call(this);  refCount--;  assert.strictEqual(refCount, -1);};
echoServer.listen(0);
echoServer.on('listening', function() {  const sock = new net.Socket();  sock.unref();  sock.ref();  sock.connect(this.address().port);  sock.on('end', () => {    assert.strictEqual(refCount, 0);    echoServer.close();  });});