Well, there's the github commit history, that sort of answers the question, no? :D
Otherwise no, there is no write up of the process. I might do one some day, thanks for the idea.
You should totally do a blog post! You could also volunteer to present on it at your local JS or React meetup (or the closest city that has one). Maybe post a video of your talk?
please make a write up or video too I'm curious how this was made