Debugging Node.js Programs

Run a script with inspect mode, then press `n` to go to each next line (how to go straight to a debugger statement instead?) Then type `repl` to actually access the variables.

```sh
node inspect my_program.js
```

h/t: https://www.youtube.com/watch?v=vW0pmFYWmCU

see: https://nodejs.org/api/inspector.html