Implement Extend<A> for Array where A: AsRef<JsValue> (#2681)

Co-authored-by: Arnau Orriols <[email protected]>

Author: arnauorriols

crates/js-sys/src/lib.rs

@@ -657,13 +657,23 @@ where
     where
         T: IntoIterator<Item = A>,
     {
-        let out = Array::new();
+        let mut out = Array::new();
+        out.extend(iter);
+        out
+    }
+}
 
+impl<A> std::iter::Extend<A> for Array
+where
+    A: AsRef<JsValue>,
+{
+    fn extend<T>(&mut self, iter: T)
+    where
+        T: IntoIterator<Item = A>,
+    {
         for value in iter {
-            out.push(value.as_ref());
+            self.push(value.as_ref());
         }
-
-        out
     }
 }
 

crates/js-sys/tests/wasm/Array.rs

@@ -81,6 +81,13 @@ fn from_iter() {
     );
 }
 
+#[wasm_bindgen_test]
+fn extend() {
+    let mut array = array!["a", "b"];
+    array.extend(vec![JsValue::from("c"), JsValue::from("d")]);
+    assert_eq!(array, array!["a", "b", "c", "d"]);
+}
+
 #[wasm_bindgen_test]
 fn to_vec() {
     let array = vec![JsValue::from("a"), JsValue::from("b"), JsValue::from("c")]