Type Alias JsObjectRef 

pub type JsObjectRef = Gc<JsObject>;

Reference to a heap-allocated object (GC-managed)

This is now Gc<JsObject> which gives us Ref<'_, JsObject> directly from borrow() calls, matching the old Rc<RefCell<JsObject>> API.

Aliased Type

pub struct JsObjectRef { /* private fields */ }