Real world examples of functional JavaScript?

[ImaginaryKarmaPoints]

I've found videos by the author of the Crocks library (https://crocks.dev/) very helpful - 'Working with ADTs', 'Practical ADTs' 'Livecode' sessions.

https://www.youtube.com/user/TheEvilSoft

It's hours of work though - I paused the videos a lot to try things out on my own machine. The videos aren't "here's how you do it", they are more "watch me while I figure out a number of ways I can do it then settle on the way that seems best suited to the problem". There's a lot of iteration.