My most common scenario for kick-starting my creative coding is to bust open the REPL and brain dump the more difficult concepts just to see if they're feasible

My most common scenario for kick-starting my creative coding is to bust open the REPL and brain dump the more difficult concepts just to see if they're feasible. I use the REPL so I can quickly debug code and see immediate results. There's no way I could just jot down 750 words of code without having executed it at least once. Normally, I'd probably have executed my code every 10 new words of code - so like, 75 times by the time I write 750 words. I just don't see a non-REPL editor helping me in this way. I know there are in-browser REPLs for languages like Ruby and Python, etc. Perhaps if it had one of those in it, or something, then it'd make more sense for me to try it.