gistfile1.txt

function server() {
            window.require = require
            // emit a `client` event on the window with the given packet object
            function send(packet) {
                var event = document.createEvent("CustomEvent")
                event.initCustomEvent("client", false, true, packet)
                console.log("client!", event.detail)
                window.dispatchEvent(event)
            }
            window.addEventListener("server", function(event) {
                console.log("server?", event.detail)
                var packet = event.detail
                var result
                try {
                    result = window.eval(packet.source)
                }
                catch (error) {
                    result = error
                }
                send({ from: packet.to, message: result })
            }, false);
        };