Send error doesn't have full stack trace

[yotamN]

Description

When an error is being raised in the send method, the stack trace doesn't help since it's inside a callback.

Example

I'm not sure how to make an error explicitly but any error in there will have a stack trace without the calling code.

[cyrus-and]

Can you show me a use case, an example stack trace, and what you would expect instead?

[yotamN]

Sorry for the delay. Here is an example, modified from the example in the README:

example.js

const CDP = require('chrome-remote-interface');

async function example() {
    let client;
    try {
	// connect to endpoint
	client = await CDP();

	const { targetId } = await client.send('Target.createTarget', {
	    url: 'about:blank',
	});
	const { sessionId } = await client.send('Target.attachToTarget', {
	    targetId,
	    flatten: true,
	});

	await client.send('Page.setFontFamilies', { fontFamilies: 'abc' }, sessionId);
    } catch (err) {
	console.error(err);
    } finally {
	if (client) {
	    await client.close();
	}
    }
}

example();

As you can see, I've sent a malformed value to Page.setFontFamilies, resulting in an error from the server. The error provides a traceback, but it doesn't indicate where the event was sent from. Here is what I see:

traceback

ProtocolError: Invalid parameters (Failed to deserialize params.fontFamilies - CBOR: map start expected at position 21)
    at /tmp/tmp.MnSBByXgtf/node_modules/chrome-remote-interface/lib/chrome.js:94:35
    at Chrome._handleMessage (/tmp/tmp.MnSBByXgtf/node_modules/chrome-remote-interface/lib/chrome.js:272:17)
    at WebSocket.<anonymous> (/tmp/tmp.MnSBByXgtf/node_modules/chrome-remote-interface/lib/chrome.js:240:22)
    at WebSocket.emit (node:events:518:28)
    at Receiver.receiverOnMessage (/tmp/tmp.MnSBByXgtf/node_modules/ws/lib/websocket.js:1070:20)
    at Receiver.emit (node:events:518:28)
    at Receiver.dataMessage (/tmp/tmp.MnSBByXgtf/node_modules/ws/lib/receiver.js:517:14)
    at Receiver.getData (/tmp/tmp.MnSBByXgtf/node_modules/ws/lib/receiver.js:435:17)
    at Receiver.startLoop (/tmp/tmp.MnSBByXgtf/node_modules/ws/lib/receiver.js:143:22)
    at Receiver._write (/tmp/tmp.MnSBByXgtf/node_modules/ws/lib/receiver.js:78:10) {
  request: {
    method: 'Page.setFontFamilies',
    params: { fontFamilies: 'abc' },
    sessionId: '954ADA77AA8ED4B9159ED4A896D92EC8'
  },
  response: {
    code: -32602,
    message: 'Invalid parameters',
    data: 'Failed to deserialize params.fontFamilies - CBOR: map start expected at position 21'
  }
}