From 67bebf853ca5a248358ea1854124a46b70c677cd Mon Sep 17 00:00:00 2001 From: Eugen Wissner Date: Sat, 1 Feb 2020 20:46:35 +0100 Subject: Replace MonadIO constraint with just Monad And make the tests use Identity instead of IO. --- src/Language/GraphQL/Trans.hs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'src/Language/GraphQL/Trans.hs') diff --git a/src/Language/GraphQL/Trans.hs b/src/Language/GraphQL/Trans.hs index 24752a2..09c012b 100644 --- a/src/Language/GraphQL/Trans.hs +++ b/src/Language/GraphQL/Trans.hs @@ -56,7 +56,7 @@ instance Monad m => MonadPlus (ActionT m) where -- | Retrieves an argument by its name. If the argument with this name couldn't -- be found, returns 'Value.Null' (i.e. the argument is assumed to -- be optional then). -argument :: MonadIO m => Name -> ActionT m Value +argument :: Monad m => Name -> ActionT m Value argument argumentName = do argumentValue <- ActionT $ lift $ asks $ lookup . arguments pure $ fromMaybe Null argumentValue -- cgit v1.2.3