JS debuggers are generally very good. The level of interactiveness of JS also puts them ahead of most non-lisp languages. Debugging async code isn't like debug

JS debuggers are generally very good. The level of interactiveness of JS also puts them ahead of most non-lisp languages. Debugging async code isn't like debugging other code. Once you cross that async barrier, all stack traces disappear (I understand Google's doing some work on making that better). In this particular case, debugging is harder because the UI is also holding all the data, so in order to reset to known good data, you have to reset the page itself. One of the biggest benefits to moving to React (or similar) is that you start keeping all that data in a central place.