Hello @yz-yu and thank you for this fabulous project rrweb ! We are developing educational tools out of it (programming tutorials with audio, for example)! Keep up the good work.
By the way, I find your pernosco debugger very interesting for pedagogical purposes. We are working on integrating Debug Adapter Protocol to preprocess the execution of a program and execute it line by line on the client side for teaching purposes but your solution looks much more elegant ! Any plan to make it compatible with Python and Java or other JVM languages ?
Right now we're focused on selling the product we have.
The infrastructure we built to support JS would extend pretty easily to Python. Extending to Java would be a lot more work. No plans to do either anytime soon (unless someone wants to pay us significant money for that).