It is not quite the same. I'd argue that, while browser environments are very good, they're trying to solve a slightly different problem, and the overlap in cap

It is not quite the same. I'd argue that, while browser environments are very good, they're trying to solve a slightly different problem, and the overlap in capabilities is less than complete. Lispers sometimes say that the browser devtools experience is about halfway toward the power of a good Lisp environment, but I would argue that the converse is also true.