fix: allow fermi atomref to be cloned

examples/fermi.rs

@@ -14,6 +14,7 @@ fn app(cx: Scope) -> Element {
     cx.render(rsx! {
         div { "hello {name}!" }
         Child {}
+        ChildWithRef{}
     })
 }
 
@@ -27,3 +28,27 @@ fn Child(cx: Scope) -> Element {
         }
     })
 }
+
+static NAMES: AtomRef<Vec<String>> = |_| vec!["world".to_string()];
+
+fn ChildWithRef(cx: Scope) -> Element {
+    let names = use_atom_ref(&cx, NAMES);
+
+    cx.render(rsx! {
+        div {
+            ul {
+                names.read().iter().map(|f| rsx!{
+                    li { "hello: {f}" }
+                })
+            }
+            button {
+                onclick: move |_| {
+                    let names = names.clone();
+                    cx.spawn(async move {
+                        names.write().push("asd".to_string());
+                    })
+                }
+            }
+        }
+    })
+}

packages/fermi/src/hooks/atom_ref.rs

@@ -34,6 +34,17 @@ pub struct UseAtomRef<T> {
     scope_id: ScopeId,
 }
 
+impl<T> Clone for UseAtomRef<T> {
+    fn clone(&self) -> Self {
+        Self {
+            ptr: self.ptr,
+            value: self.value.clone(),
+            root: self.root.clone(),
+            scope_id: self.scope_id,
+        }
+    }
+}
+
 impl<T: 'static> UseAtomRef<T> {
     pub fn read(&self) -> Ref<T> {
         self.value.borrow()