add attributes

Author: mununki

res_syntax/tests/parsing/grammar/expressions/await.res

@@ -25,6 +25,6 @@ let () = {
     await delay(20)
 }
 
-let forEach = await Js.Import(Belt.List.forEach)
+let forEach = await @a @b Js.Import(Belt.List.forEach)
 
-module M = await Belt.List
+module M = await @a @b Belt.List

res_syntax/tests/parsing/grammar/expressions/expected/await.res.txt

@@ -16,5 +16,5 @@ let () =
 let () = ((delay 10)[@res.braces ][@res.await ])
 let () = ((((delay 10)[@res.await ]); ((delay 20)[@res.await ]))
   [@res.braces ])
-let forEach = ((Js.Import Belt.List.forEach)[@res.await ])
-module M = ((Belt.List)[@res.await ])
+let forEach = ((Js.Import Belt.List.forEach)[@res.await ][@a ][@b ])
+module M = ((Belt.List)[@res.await ][@a ][@b ])