Make sure window is in sync with CustomElements registration

Author: manuelpuyol

src/register.ts

@@ -14,10 +14,10 @@ export function register(classObject: CustomElement): void {
     .toLowerCase()
 
   try {
+    window.customElements.define(name, classObject)
     // eslint-disable-next-line @typescript-eslint/ban-ts-comment
     // @ts-ignore
-    window[classObject.name] = classObject
-    window.customElements.define(name, classObject)
+    window[classObject.name] = customElements.get(name)
   } catch {
     // silently ignore
   }