VS Code extension

You can test with a build for LINUX

bin/espruino --telnet
espruino: Interactive mode.
espruino: Size of JsVar is now 27 bytes
espruino: Size of JsVarRef is now 4 bytes
espruino: Added SIGINT hook
espruino: Added SIGHUP hook
espruino: Added SIGTERM hook

     ____                 _
|  __|___ ___ ___ _ _|_|___ ___
|  __|_ -| . |  _| | | |   | . |
|____|___|  _|_| |___|_|_|_|___|
             |_| espruino.com
 2v18.6 (c) 2021 G.Williams

Espruino is Open Source. Our work is supported
only by sales of official boards and donations:
http://espruino.com/Donate

>

check with lsof

lsof  -n -P -i :2323
COMMAND    PID       USER   FD   TYPE            DEVICE SIZE/OFF NODE NAME
espruino 35833 markbecker    3u  IPv4 0x849de14f55bcd49      0t0  TCP *:2323 (LISTEN)

and then connect