diff --git a/.build/common.ts b/.build/common.ts
index f27e741e6..94bb26082 100644
--- a/.build/common.ts
+++ b/.build/common.ts
@@ -1,3 +1,6 @@
+/**
+ * Shared common options for both ESBuild and Vite
+ */
 export const packageOptions = {
   mermaid: {
     name: 'mermaid',