That code ended up turning into term.js which forked into xterm.js (which I maintain). It's quite a mature project at this point https://github.com/xtermjs/xter

That code ended up turning into term.js which forked into xterm.js (which I maintain). It's quite a mature project at this point https://github.com/xtermjs/xterm.js https://github.com/xtermjs/xterm.js, you can combine it with https://www.npmjs.com/package/xterm-local-echo https://www.npmjs.com/package/xterm-local-echo to make implementing something like this website much easier.