Hi guys. That's a node.js-based MUD client.
In old times, like 15 years ago people used Tintin++ and JMC to play MUDs and script things.
But Node.JS is a much better choice.
I wrote this tiny JS-scriptable MUD-client as a PoC in the memory of old MUDs:
P.S. I do not plan to support/improve it. But you're free to fork & have that fun.