do not attempt to invalidate module-level variables

src/compiler/compile/render_dom/Renderer.ts

@@ -161,11 +161,14 @@ export default class Renderer {
 		}
 
 		if (
-			variable &&
+			variable && (
+				variable.module || (
 					!variable.referenced &&
 					!variable.is_reactive_dependency &&
 					!variable.export_name &&
 					!name.startsWith('$$')
+				)
+			)
 		) {
 			return value || name;
 		}