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Add instance for MonadAff #19

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Merged
merged 1 commit into from
Aug 26, 2019
Merged

Add instance for MonadAff #19

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3 changes: 2 additions & 1 deletion bower.json
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Original file line number Diff line number Diff line change
Expand Up @@ -21,7 +21,8 @@
"purescript-exists": "^4.0.0",
"purescript-prelude": "^4.0.0",
"purescript-tailrec": "^4.0.0",
"purescript-transformers": "^4.0.0"
"purescript-transformers": "^4.0.0",
"purescript-aff": "^5.1.1"
},
"devDependencies": {
"purescript-console": "^4.0.0"
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4 changes: 4 additions & 0 deletions src/Control/Monad/Free/Trans.purs
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Expand Up @@ -24,6 +24,7 @@ import Control.Monad.Writer.Class (class MonadTell, tell)
import Data.Bifunctor (bimap)
import Data.Either (Either(..))
import Data.Exists (Exists, mkExists, runExists)
import Effect.Aff.Class (class MonadAff, liftAff)
import Effect.Class (class MonadEffect, liftEffect)

-- | Instead of implementing `bind` directly, we capture the bind using this data structure, to
Expand Down Expand Up @@ -91,6 +92,9 @@ instance monoidFreeT :: (Functor f, Monad m, Monoid w) => Monoid (FreeT f m w) w
instance monadEffectFreeT :: (Functor f, MonadEffect m) => MonadEffect (FreeT f m) where
liftEffect = lift <<< liftEffect

instance monadAffFreeT :: (Functor f, MonadAff m) => MonadAff (FreeT f m) where
liftAff = lift <<< liftAff

instance monadAskFreeT :: (Functor f, MonadAsk r m) => MonadAsk r (FreeT f m) where
ask = lift ask

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