diff --git a/packages/core/FormObserver.js b/packages/core/FormObserver.js
index abc20d4..a75ae8f 100644
--- a/packages/core/FormObserver.js
+++ b/packages/core/FormObserver.js
@@ -1,5 +1,10 @@
 import { assertElementIsForm } from "./utils/assertions.js";
 
+/** @type {string} */
+let onion;
+
+onion = 5;
+
 class FormObserver {
   /* ---------- Constructor-related Fields. (Must be compatible with `Node.addEventListener`.) ---------- */
   /** @readonly @type {ReadonlyArray<import("./types.d.ts").EventType>} */