Add js.Batch

Fixes #12626
Closes #7499
Closes #9978
Closes #12879
Closes #13113
Fixes #13116

common/hreflect/helpers.go

@@ -223,6 +223,27 @@ func AsTime(v reflect.Value, loc *time.Location) (time.Time, bool) {
 	return time.Time{}, false
 }
 
+// ToSliceAny converts the given value to a slice of any if possible.
+func ToSliceAny(v any) ([]any, bool) {
+	if v == nil {
+		return nil, false
+	}
+	switch vv := v.(type) {
+	case []any:
+		return vv, true
+	default:
+		vvv := reflect.ValueOf(v)
+		if vvv.Kind() == reflect.Slice {
+			out := make([]any, vvv.Len())
+			for i := 0; i < vvv.Len(); i++ {
+				out[i] = vvv.Index(i).Interface()
+			}
+			return out, true
+		}
+	}
+	return nil, false
+}
+
 func CallMethodByName(cxt context.Context, name string, v reflect.Value) []reflect.Value {
 	fn := v.MethodByName(name)
 	var args []reflect.Value

common/hreflect/helpers_test.go

@@ -50,6 +50,19 @@ func TestIsContextType(t *testing.T) {
 	c.Assert(IsContextType(reflect.TypeOf(valueCtx)), qt.IsTrue)
 }
 
+func TestToSliceAny(t *testing.T) {
+	c := qt.New(t)
+
+	checkOK := func(in any, expected []any) {
+		out, ok := ToSliceAny(in)
+		c.Assert(ok, qt.Equals, true)
+		c.Assert(out, qt.DeepEquals, expected)
+	}
+
+	checkOK([]any{1, 2, 3}, []any{1, 2, 3})
+	checkOK([]int{1, 2, 3}, []any{1, 2, 3})
+}
+
 func BenchmarkIsContextType(b *testing.B) {
 	type k string
 	b.Run("value", func(b *testing.B) {