[Bug]: Seeking repeatedly crashes chrome tab (when using virtual dom)

[pdwittig]

Preflight Checklist

• I have searched the issue tracker for a bug report that matches the one I want to file, without success.

What package is this bug report for?

rrweb

Version

2.0.0-alpha.5

Expected Behavior

I am able to seek without chrome tab crashing

Actual Behavior

Using the latest alpha version, with useVirtualDom: true, when I scrub around (drag progress bar or click seek forward or backward repeatedly, which calls player.play(time)) my chrome tab crashes with error code 5.

If I set useVirtualDom: false and scrub the tab does not crash.

Additionally, if I bump down to 2.0.0-alpha.4 I am not able to reproduce the bug with or without virtual DOM enabled.

This happens for every recording I play in my player, so I have not included a test set of events.

Additionally, I'm not really great at debugging these sort of issues, but I did run the chrome profiler, and it looks like it could be some sort of memory leak?

Let me know if I can provide any additional information to help debug. Thanks!

Steps to Reproduce

See above

Testcase Gist URL

No response

Additional Information

No response

[Code-Crash]

I'm also facing this issue in 2.0.0-alpha.5.

The attached image shows its CPU usage is at 100% and JS heap size is more than 1GB.

[YunFeng0817]

I've fixed this bug in #1139, @Juice10 could you please review my code these days? This issue is urgent I think.

[YunFeng0817]

2.0.0-alpha.6 is available with the fix.

[Code-Crash]

Thank @YunFeng0817, it's working now.