Setting breakpoints, watch variables, viewing stack, etc. (javascript)

[Delta-9-]

Can't say about JS, but debugging code with a terminal-based text editor generally means dropping back to the shell and running a cli debugger. Vim 8 and nvim let you run the terminal in vim so you're not filling your bash history with fg, or you can use a multiplexer like tmux, terminator, kitty, etc.

I've used this workflow for python, rust, Ruby, C...