Turn WebSocket messages into document Events.

websocket-event-client.js

var app = {
    url: "ws://" + document.location.hostname
};

app.socket = new WebSocket(app.url + ":8082");
app
    .socket
    .addEventListener('message', function(e) {
        var message = JSON.parse(e.data);
        var event = new CustomEvent(message.type);
        event.data = message.data;
        document.dispatchEvent(event);
    });

websocket-event-server.js

var WebSocket = require("ws");

var appSocket = new WebSocket.Server({perMessageDeflate: false, port: 8082});
appSocket.broadcast = function(type, data) {
    var message = JSON.stringify({type: type, data: data});
    appSocket
        .clients
        .forEach(function(client) {
            if (client.readyState === WebSocket.OPEN) {
                try {
                    client.send(message);
                } catch (err) {
                    console.error("Broadcast Message", err);
                }
            }
        });
};