Hello Espruino forum ,
I have exact same problem as DanB.
Here is some of the things I have tried:
a) Installed WinUsb driver as suggested here: https://github.com/noble/node-bluetooth-hci-socket
That instantly disabled my bluetooth mouse and kb, followed by a slightly panic situation until a treasury hunt for cabled devices in the basement was succesful :-)
b) Running with "espruino --no-ble".
(version 0.1.13 of Espruino CLI)
c) Also tried "npm remove noble".
Could someone please help out a newbie ?