I don't believe this is implemented, no. All the API calls are documented in the reference here: http://www.espruino.com/Reference#NRF
@Gordon 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.
I don't believe this is implemented, no. All the API calls are documented in the reference here: http://www.espruino.com/Reference#NRF