Espruino on ESP8266

would you (in principle) be willing to accept pull requests against your code to bring together common changes?

Yes, absolutely. From my point of view I'd like to try and get ESP8266-related code out of the src directory as much as possible (eg. no #ifdef ESP8266). Hopefully that can be done in a way that makes porting to new devices easier, not harder.

I haven't looked properly, but the owner of the branch may well have tried not to do that anyway - he mentions wanting to commit the code back in the Readme.