Move server back to index.js

server/index.js

@@ -1,12 +1,16 @@
 import express from 'express'
+import http from 'http'
+import socketServer from './socket.js'
 
-const app = express()
 const port = 3000
+const app = express()
+const server = http.createServer(app)
+socketServer(server)
 
 app.get('/', (req, res) => {
   res.send('Hello World!')
 })
 
-app.listen(port, () => {
+server.listen(port, () => {
   console.log(`Server listening at http://localhost:${port}`)
 })