Update vite.config.ts

Author: CarlosNZ

demo/vite.config.ts

@@ -23,6 +23,47 @@ export default defineConfig({
   build: {
     outDir: 'build',
     emptyOutDir: true,
+    rollupOptions: {
+      output: {
+        manualChunks: {
+          // UI library chunks
+          chakra: [
+            '@chakra-ui/react',
+            '@chakra-ui/icons',
+            '@emotion/react',
+            '@emotion/styled',
+            'framer-motion'
+          ],
+          // Code editor and related packages
+          codemirror: [
+            '@uiw/react-codemirror',
+            '@codemirror/lang-json',
+            '@uiw/codemirror-theme-github',
+            '@uiw/codemirror-theme-console',
+            '@uiw/codemirror-theme-quietlight',
+            '@uiw/codemirror-theme-monokai'
+          ],
+          // Icons library
+          icons: [
+            'react-icons/fa',
+            'react-icons/bi',
+            'react-icons/ai'
+          ],
+          // Core React packages
+          vendor: [
+            'react',
+            'react-dom',
+            'wouter',
+            'use-undo'
+          ],
+          // JSON utilities
+          json: [
+            'json5',
+            'ajv'
+          ]
+        }
+      }
+    }
   },
   define: {
     __BUILD_TIME__: JSON.stringify(