Control-Monad-Eff-Console.purs

module Control.Monad.Eff.Console where

import Prelude

import Control.Monad.Eff

-- | The `CONSOLE` effect represents those computations which write to the console.
foreign import data CONSOLE :: !

-- | Write a message to the console.
foreign import log :: forall eff. String -> Eff (console :: CONSOLE | eff) Unit

-- | Write an error to the console.
foreign import error :: forall eff. String -> Eff (console :: CONSOLE | eff) Unit

-- | Write a value to the console, using its `Show` instance to produce a `String`.
print :: forall a eff. (Show a) => a -> Eff (console :: CONSOLE | eff) Unit
print = log <<< show