[sdwvit]

Do you mean a time travel debugger? I believe it would be an awesome feature to be able to record & replay program execution. I imagine the recordings would be huge in size, as there are many more degrees of freedom on backend than it is on frontend.

[westurner]

Today I found EffectfulJS Debugger, which is a DAP debugger with time travel and state persistence for JS: https://news.ycombinator.com/item?id=41036985