rely on stringification instead of state reports

src/index.js

@@ -19,7 +19,7 @@ app.use(express.urlencoded({ extended: true }))
 app.ws('/ws', async (req, res) => {
   const websocket = await res.accept()
 
-  const subscription = () => websocket.send(JSON.stringify(game.state()))
+  const subscription = () => websocket.send(JSON.stringify(game))
   game.eventEmitter.on('tick', subscription)
 
   websocket.on('close', () => {