all these changes

frontend/vite.config.mjs

@@ -0,0 +1,26 @@
+import { defineConfig } from 'vite';
+import react from '@vitejs/plugin-react';
+
+export default defineConfig({
+  plugins: [react()],
+  esbuild: {
+    loader: 'jsx',
+    include: /src\/.*\.js$/,
+    exclude: [],
+  },
+  optimizeDeps: {
+    esbuildOptions: {
+      loader: {
+        '.js': 'jsx',
+      },
+    },
+  },
+  server: {
+    host: '0.0.0.0',
+    port: 3000,
+    strictPort: true,
+    watch: {
+      usePolling: process.env.CHOKIDAR_USEPOLLING === 'true',
+    },
+  },
+});