add stats

src/index.js

@@ -14,6 +14,7 @@ const game = new Game()
 app.use('/', express.static('public'))
 app.use('/three/', express.static('node_modules/three'))
 app.use('/@tweenjs/', express.static('node_modules/@tweenjs'))
+app.use('/stats.js/', express.static('node_modules/stats.js'))
 app.use(express.urlencoded({ extended: true }))
 
 app.ws('/ws', async (req, res) => {