Output result different from document in mjs example of `Events`

[pluris]

Version

v20.5.1

Platform

ubuntu 20.04, Microsoft Windows NT 10.0.19045.0 x64

Subsystem

No response

What steps will reproduce the bug?

When performing the document example for event, the results are different.

node/doc/api/events.md

Lines 102 to 111 in e0fb3f7

	```mjs
	import { EventEmitter } from 'node:events';
	class MyEmitter extends EventEmitter {}
	const myEmitter = new MyEmitter();
	myEmitter.on('event', (a, b) => {
	console.log(a, b, this);
	// Prints: a b {}
	});
	myEmitter.emit('event', 'a', 'b');
	```

Even if you print console.log(this); in the part where the callback is called in another mjs example, it is the same.

node/doc/api/http.md

Lines 484 to 537 in e0fb3f7

	```mjs
	import { createServer, request } from 'node:http';
	import { connect } from 'node:net';
	import { URL } from 'node:url';
	// Create an HTTP tunneling proxy
	const proxy = createServer((req, res) => {
	res.writeHead(200, { 'Content-Type': 'text/plain' });
	res.end('okay');
	});
	proxy.on('connect', (req, clientSocket, head) => {
	// Connect to an origin server
	const { port, hostname } = new URL(`http://${req.url}`);
	const serverSocket = connect(port || 80, hostname, () => {
	clientSocket.write('HTTP/1.1 200 Connection Established\r\n' +
	'Proxy-agent: Node.js-Proxy\r\n' +
	'\r\n');
	serverSocket.write(head);
	serverSocket.pipe(clientSocket);
	clientSocket.pipe(serverSocket);
	});
	});
	// Now that proxy is running
	proxy.listen(1337, '127.0.0.1', () => {
	// Make a request to a tunneling proxy
	const options = {
	port: 1337,
	host: '127.0.0.1',
	method: 'CONNECT',
	path: 'www.google.com:80',
	};
	const req = request(options);
	req.end();
	req.on('connect', (res, socket, head) => {
	console.log('got connected!');
	// Make a request over an HTTP tunnel
	socket.write('GET / HTTP/1.1\r\n' +
	'Host: www.google.com:80\r\n' +
	'Connection: close\r\n' +
	'\r\n');
	socket.on('data', (chunk) => {
	console.log(chunk.toString());
	});
	socket.on('end', () => {
	proxy.close();
	});
	});
	});
	```

How often does it reproduce? Is there a required condition?

Always

What is the expected behavior? Why is that the expected behavior?

// Prints: a b {}

What do you see instead?

// Prints: a b undefined

Additional information

In cjs examples, this is output as {}, while in mjs examples, this is output as undefined. It is necessary to check whether the output as undefined is a problem or normal, and if not, the document needs to be modified.

[vishal6557]

Hello, Can I work on this issue?

[atlowChemi]

Fixed by #49548 which seems to not have been linked