清理一下

vite.config.js

@@ -1,6 +1,6 @@
-import { fileURLToPath, URL } from 'node:url'
+import {fileURLToPath, URL} from 'node:url'
 
-import { defineConfig } from 'vite'
+import {defineConfig} from 'vite'
 import legacy from '@vitejs/plugin-legacy'
 import vue2 from '@vitejs/plugin-vue2'
 import vue2Jsx from '@vitejs/plugin-vue2-jsx'
@@ -19,5 +19,8 @@ export default defineConfig({
     alias: {
       '@': fileURLToPath(new URL('./src', import.meta.url))
     }
+  },
+  devServer: {
+    port: 9000
   }
 })