Looking at the LoRa stuff, it sure seems like you could run a packet forwarder on Espruino.
nRF52 could easily forward BLE data over an RN2483 to a LoRa gateway, and could do so while using relatively little power.
Trying to make a gateway itself could be possible too, maybe - but I see that being a lot more work, and personally I think it'd be worth leveraging the existing work done on the Raspberry Pi version.
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.
Looking at the LoRa stuff, it sure seems like you could run a packet forwarder on Espruino.
nRF52 could easily forward BLE data over an RN2483 to a LoRa gateway, and could do so while using relatively little power.
Trying to make a gateway itself could be possible too, maybe - but I see that being a lot more work, and personally I think it'd be worth leveraging the existing work done on the Raspberry Pi version.