feat(webui): Infrastructure Setup (Prerequisites)

packages/webui/vite.config.ts

@@ -0,0 +1,53 @@
+/**
+ * @license
+ * Copyright 2025 Qwen Team
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { defineConfig } from 'vite';
+import react from '@vitejs/plugin-react';
+import dts from 'vite-plugin-dts';
+import { resolve } from 'path';
+
+/**
+ * Vite configuration for @qwen-code/webui library
+ *
+ * Build outputs:
+ * - ESM: dist/index.js (primary format)
+ * - CJS: dist/index.cjs (compatibility)
+ * - TypeScript declarations: dist/index.d.ts
+ * - CSS: dist/styles.css (optional styles)
+ */
+export default defineConfig({
+  plugins: [
+    react(),
+    dts({
+      include: ['src'],
+      outDir: 'dist',
+      rollupTypes: true,
+      insertTypesEntry: true,
+    }),
+  ],
+  build: {
+    lib: {
+      entry: resolve(__dirname, 'src/index.ts'),
+      name: 'QwenCodeWebUI',
+      formats: ['es', 'cjs'],
+      fileName: (format) => `index.${format === 'es' ? 'js' : 'cjs'}`,
+    },
+    rollupOptions: {
+      external: ['react', 'react-dom', 'react/jsx-runtime'],
+      output: {
+        globals: {
+          react: 'React',
+          'react-dom': 'ReactDOM',
+          'react/jsx-runtime': 'jsxRuntime',
+        },
+        assetFileNames: 'styles.[ext]',
+      },
+    },
+    sourcemap: true,
+    minify: false,
+    cssCodeSplit: false,
+  },
+});