{- $setup
>>> :m
>>> import Control.Applicative ((<|>))
>>> import Data.Char (isDigit, isAlpha)

>>> import Streamly.Data.Parser (Parser)
>>> import Streamly.Data.ParserK (ParserK)

>>> import qualified Streamly.Data.Parser as Parser
>>> import qualified Streamly.Data.ParserK as ParserK

For APIs that have not been released yet.

>>> import qualified Streamly.Internal.Data.ParserK as ParserK
-}