[Bug]: Cannot use 'in' operator to search for 'xmlns' in undefined about rrweb HOT 6 CLOSED

Thanks for the bug report.
When I make a recording of your website via yarn repl I get the following DOM structure:

{"type":2,
 "data":{"node":{"type":0,
		 "childNodes":[{"type":2,
				"tagName":"html",
				"attributes":{},
				"childNodes":[{"type":2,
					       "tagName":"head",
					       "attributes":{},
					       "childNodes":[{"type":3,
							      "textContent":"\n\t\t",
							      "id":4}

And don't get any error.

All of the nodes have an empty attributes object (your TypeError is complaining about attributes being undefined)

Is it possible that you are doing some server side processing of the rrewb data?

from rrweb.

This would be a fix btw, but don't think it's needed in trunk, but I may be wrong;

+++ b/packages/rrweb-snapshot/src/rebuild.ts
@@ -439,6 +439,7 @@ export function buildNodeWithSN(
       // this is needed as document.createElement('iframe') otherwise inherits a CSS1Compat mode from the parent replayer environment
       if (
         n.childNodes[0].type === NodeType.Element &&
+        n.childNodes[0].attributes &&
         'xmlns' in n.childNodes[0].attributes &&
         n.childNodes[0].attributes.xmlns === 'http://www.w3.org/1999/xhtml'
       ) {

from rrweb.

@eoghanmurray Appreciate your response. While recording sessions, I haven't encountered any errors. However, I'm encountering playback issues specifically with rrweb-player, and it seems to be isolated to a particular website. This suggests there might be an issue with how rrweb captures the DOM for this site. Can you please tell if that can be fixed or is there any alternate for this issue.

from rrweb.

So as mentioned I've checked with yarn repl against the website you referenced but could not recreate.
Could you do the same with your installation of rrweb — 1.0.0-alpha.4 — I'm running off trunk so I think that's a little ahead of you.

General instructions:

I also queried whether you are doing any postprocessing of events?

from rrweb.

@eoghanmurray Thank you for your response. I haven't encountered any errors while recording and saving the DOM structure to my backend. However, I'm experiencing issues with playback using rrweb-player. I'll also attempt playback using the trunk version. Regarding post-processing, I'm not currently performing any post-processing on the data.

from rrweb.

Could you let me know what the resolution on this was? Did the current version of trunk fix it?

from rrweb.