chore: vite config update

vite.config.ts

@@ -3,25 +3,11 @@ import vue from '@vitejs/plugin-vue'
 import { resolve } from 'path'
 import fs from 'fs'
 
-export default defineConfig({
-  plugins: [vue()],
-  resolve: {
-    alias: {
-      '@': resolve(__dirname, 'src'),
-      '@engine': resolve(__dirname, 'engine'),
-    },
-  },
-  build: {
-    rollupOptions: {
-      input: {
-        main: resolve(__dirname, 'index.html'),
-        editor: resolve(__dirname, 'editor/index.html'),
-      },
-    },
-  },
-  server: {
-    configureServer(server) {
-      server.middlewares.use('/api/save', (req, res) => {
+function apiSavePlugin() {
+  return {
+    name: 'api-save',
+    configureServer(server: any) {
+      server.middlewares.use('/api/save', (req: any, res: any) => {
         if (req.method !== 'POST') { res.writeHead(405); res.end(); return }
         let body = ''
         req.on('data', (c: string) => body += c)
@@ -44,5 +30,23 @@ export default defineConfig({
         })
       })
     },
+  }
+}
+
+export default defineConfig({
+  plugins: [vue(), apiSavePlugin()],
+  resolve: {
+    alias: {
+      '@': resolve(__dirname, 'src'),
+      '@engine': resolve(__dirname, 'engine'),
+    },
+  },
+  build: {
+    rollupOptions: {
+      input: {
+        main: resolve(__dirname, 'index.html'),
+        editor: resolve(__dirname, 'editor/index.html'),
+      },
+    },
   },
 })