fix(server): move entry to src/index

fix(server): move entry to src/index

src/index.js

@@ -0,0 +1,26 @@
+import app from './server'
+import http from 'http'
+
+const server = http.createServer(app)
+
+let currentApp = app
+
+server.listen(process.env.PORT, error => {
+	if (error) {
+		console.log(error)
+	}
+
+	console.log('🚀 started')
+})
+
+if (module.hot) {
+	console.log('✅  Server-side HMR Enabled!')
+
+	module.hot.accept('./server', () => {
+		console.log('🔁  HMR Reloading `./server`...')
+		server.removeListener('request', currentApp)
+		const newApp = require('./server').default
+		server.on('request', newApp)
+		currentApp = newApp
+	})
+}