diff --git a/vite.config.ts b/vite.config.ts
index 7feb1dd..742f806 100644
--- a/vite.config.ts
+++ b/vite.config.ts
@@ -56,7 +56,7 @@ export default defineConfig(({ command, mode }) => {
         // https://cn.rollupjs.org/configuration-options/#output-assetfilenames
         // output: env.VITE_SPLIT_CHUNKS === 'true' ? (await import('utils4u/rollup')).createSplitChunkOutput() : undefined,
         output: {
-          minifyInternalExports: false,
+          // minifyInternalExports: false,
           // manualChunks: {
           //   'vendor/utils4u': ['utils4u', 'utils4u/vue-use', 'utils4u/primevue'],
           //   'vendor/vue': ['vue'],
@@ -70,6 +70,14 @@ export default defineConfig(({ command, mode }) => {
           manualChunks: {
             'vendor/Cesium': ['cesium'],
           },
+          // advancedChunks: {
+          //   groups: [
+          //     {
+          //       name: 'vendor/cesium',
+          //       test: 'cesium',
+          //     },
+          //   ],
+          // },
         },
       },
       sourcemap: mode !== 'production' || env.VITE_SOURCE_MAP === 'true',