If you see messages such as "wdt reset" then that is very likely. "wdt" is "Watch Dog Timer" which attempts to reboot the ESP8266 if it thinks it has stalled (such as not giving control back to ESP8266 often enough).
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.
If you see messages such as "wdt reset" then that is very likely. "wdt" is "Watch Dog Timer" which attempts to reboot the ESP8266 if it thinks it has stalled (such as not giving control back to ESP8266 often enough).