export ListT constructor

matthewleon · matthewleon · commit 8aa34544bf5d · 2017-03-23T17:49:03.000Z
Addresses #83. Independent of PR #89. This brings ListT into line with the other transformers.
diff --git a/src/Control/Monad/List/Trans.purs b/src/Control/Monad/List/Trans.purs
@@ -1,7 +1,8 @@
 -- | This module defines the list monad transformer, `ListT`.
 
 module Control.Monad.List.Trans
-  ( ListT
+  ( ListT(..)
+  , Step(..)
   , catMaybes
   , cons
   , drop
