@@ -744,3 +744,11 @@ instance HasDocument m => HasDocument (DynamicWriterT t w m)
744744instance HasDocument m => HasDocument (PostBuildT t m)
745745instance HasDocument m => HasDocument (RequesterT t request response m)
746746instance HasDocument m => HasDocument (QueryT t q m)
747+
748+class HasSetValue a where
749+ type SetValue a :: *
750+ setValue :: Lens' a (SetValue a)
751+
752+instance Reflex t => HasSetValue (TextAreaElementConfig er t m) where
753+ type SetValue (TextAreaElementConfig er t m) = Event t Text
754+ setValue = textAreaElementConfig_setValue