Did you try this? https://forum.espruino.com/comments/16518547/
I did, actually. I initially thought that it needed that to be off to charge at all when I noticed it was there, but it still didn't charge.
@user154806 started
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Did you try this? https://forum.espruino.com/comments/16518547/