[CompuIves]

Replay has been amazing for me to debug hard to reproduce issues like live collaboration issues. You just record the bug, share it with others, place some console.logs (after the fact!) and scrub through the recording to see where things went wrong.

Also nice side-effect is that it's amazing to explore other code-bases, just being able to put a console.log somewhere to see how often it's run when using an application is a lot of fun.