thanks, after looking at your process.env, I found that I used BOARD "ESP8266" 's bin instead of BOARD "ESP8266_4MB" 's bin, that's why I failed to utilize the storage.
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.
maybe a limit in storage implementation?
No limit, works without error on my side