diff --git a/vite.build.js b/vite.build.js
index 906f2c1..9f0b213 100644
--- a/vite.build.js
+++ b/vite.build.js
@@ -14,8 +14,8 @@ const libraries = [
       lib: {
         entry: './lib/ui.js',
         name: 'lib-ui',
-        formats: ['umd'],
-        fileName: (_format, name) => `${name}.min.js`
+        formats: ['cjs', 'umd'],
+        fileName: (format, name) => format === 'cjs' ? `${name}-cjs.min.js` : `${name}.min.js`
       },
       rollupOptions: {
         output: {