No Closure Is a Data First Language, Right?

I'm a big fan of the live coding kind of thing, right? I want to see what I'm doing as I'm doing it. Every single block you write is its own configurable live coding panel. Unlike a REPL, which is like text-based, this says, Hey, if it's a JavaScript render object, we'll show it. If it's a map, I'll give you the option to see it in text or see it in like this structured recursive view. It's just kind of like, I want to be able to modify stuff and then see what it is in every way possible.