This might also be able to run Espruino. It's ESP32-based.
PyCom LoPy 1.0 - LoRa + WiFi + BLE https://www.adafruit.com/product/3339
@oesterle 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.
This might also be able to run Espruino. It's ESP32-based.
PyCom LoPy 1.0 - LoRa + WiFi + BLE
https://www.adafruit.com/product/3339