Add frontend URL to config.

app.js

@@ -48,7 +48,7 @@ console.log('CLUSTERS', clusters)
 const app = express();
 
 app.use(cors({
-  origin: 'http://localhost:5173'
+  origin: config.frontendUrl,
 }))
 app.use(logger('dev'));
 app.use(express.json());
@@ -155,14 +155,12 @@ const oneShotSearch = async ({ kafka, socket, topic, maxItems }) =>
     onBatchDone: buildSocketMessageSender({ socket, type: 'item_count' })
   })
 
-/**
- * @type {WebSocketServer}
- */
+/** @type {WebSocketServer} */
 const wsServer = new ws.WebSocketServer({
   noServer: true
 })
 
-/** @type {Map<WebSocket, ({consumer: Consumer, cluster: { kafka, admin, config }})>} */
+/** @type {Map<WebSocket, ({consumer: kafka.Consumer, cluster: { kafka, admin, config }})>} */
 const consumers = new Map()
 
 buildEscape(consumers, clusters)

config.js

@@ -5,19 +5,19 @@ const homedir = require('os').homedir()
 const configFilePath = homedir + path.sep + '.kafka-dance'
 
 const emptyConfig = () => ({
-  clusters: {}
+  clusters: {},
+  frontendUrl: 'http://localhost:5173',
 })
 
 const readConfig = () => {
-  if (!fs.existsSync(configFilePath)) {
-    return emptyConfig()
-  }
-  try {
-    return JSON.parse(fs.readFileSync(configFilePath).toString())
-  } catch (e) {
-    console.error(e.toString())
-    return emptyConfig()
+  if (fs.existsSync(configFilePath)) {
+    try {
+      return JSON.parse(fs.readFileSync(configFilePath).toString())
+    } catch (e) {
+      console.error(e.toString())
+    }
   }
+  return emptyConfig()
 }
 
 const storeConfig = async config =>