extract broadcasting into a separate function.

js/babl/server.js

var wss = new ws.Server({port: 8080});
wss.broadcast = function(data) {
	var msg = typeof data === "string" ? data : JSON.stringify(data);
	this.clients.forEach(function(client) {
		client.send(msg);
	});
};
wss.on('connection', function(ws) {
	var name = randomName();
		msg.author = name;
		msg.timestamp = Date.now();
		wss.clients.forEach(function(sock) {
			sock.send(JSON.stringify(msg));
		});
		wss.broadcast(msg);
	});
});