and there is also getSerial() global function http://www.espruino.com/Reference#t_l__global_getSerial that one is probably called when evaluating env.SERIAL so may be a bit faster to call it directly
@fanoush 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.
and there is also getSerial() global function http://www.espruino.com/Reference#t_l__global_getSerial that one is probably called when evaluating env.SERIAL so may be a bit faster to call it directly