diff --git a/src/js_ast.zig b/src/js_ast.zig
index 11cbcc9ba6..c21561a11a 100644
--- a/src/js_ast.zig
+++ b/src/js_ast.zig
@@ -550,6 +550,13 @@ pub const NamedImport = struct {
     // Parts within this file that use this import
     local_parts_with_uses: BabyList(u32) = BabyList(u32){},
 
+    // The original export name from the source module being imported.
+    // Examples:
+    // - `import { foo } from 'module'` → alias = "foo"
+    // - `import { foo as bar } from 'module'` → alias = "foo" (original export name)
+    // - `import * as ns from 'module'` → alias_is_star = true, alias = ""
+    // This field is used by the bundler to match imports with their corresponding
+    // exports and for error reporting when imports can't be resolved.
     alias: ?string,
     alias_loc: ?logger.Loc = null,
     namespace_ref: ?Ref,