Just to add, it looks like there's a big rant on Gitter that this doesn't 'just work' on ESP8266.
All you have to do is var f = new (require("FlashEEPROM"))(whatever_address_works_on_esp8266);
var f = new (require("FlashEEPROM"))(whatever_address_works_on_esp8266);
if you want to use this at the moment.
@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.
Just to add, it looks like there's a big rant on Gitter that this doesn't 'just work' on ESP8266.
All you have to do is
var f = new (require("FlashEEPROM"))(whatever_address_works_on_esp8266);
if you want to use this at the moment.