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-rw-r--r--src/Text/Pandoc/Class/PandocIO.hs4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/Text/Pandoc/Class/PandocIO.hs b/src/Text/Pandoc/Class/PandocIO.hs
index 63cb94155..0e5247ff9 100644
--- a/src/Text/Pandoc/Class/PandocIO.hs
+++ b/src/Text/Pandoc/Class/PandocIO.hs
@@ -29,6 +29,7 @@ import Text.Pandoc.Class.PandocMonad
import Text.Pandoc.Definition
import Text.Pandoc.Error
import qualified Text.Pandoc.Class.IO as IO
+import Control.Monad.Catch (MonadCatch, MonadMask, MonadThrow)
-- | Evaluate a 'PandocIO' operation.
runIO :: PandocIO a -> IO (Either PandocError a)
@@ -45,6 +46,9 @@ newtype PandocIO a = PandocIO {
, Functor
, Applicative
, Monad
+ , MonadCatch
+ , MonadMask
+ , MonadThrow
, MonadError PandocError
)