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(.module:
  [library
   [lux "*"
    [abstract
     ["[0]" monad {"+" do}]]
    [control
     [try {"+" Try}]
     [concurrency
      ["[0]" async {"+" Async}]]]
    [data
     [text
      ["%" format {"+" format}]]]
    [world
     ["[0]" file {"+" Path}]
     ["[0]" console {"+" Console}]]]]
  ["[0]" /// "_"
   [command {"+" Command}]
   ["[1]" profile]
   ["[1][0]" action {"+" Action}]])

(def: (clean_files! fs root)
  (-> (file.System Async) Path (Async (Try Any)))
  (let [! ///action.monad]
    (|> root
        (# fs directory_files)
        (# ! each (monad.each ! (# fs delete)))
        (# ! conjoint))))

(def: .public success
  (-> ///.Target Text)
  (|>> (format "Successfully cleaned target directory: ")))

(def: .public (do! console fs profile)
  (-> (Console Async) (file.System Async) (Command Any))
  (do [! async.monad]
    [.let [target (value@ ///.#target profile)]
     ? (# fs directory? target)
     _ (let [! ///action.monad]
         (if ?
           (loop [root target]
             (do !
               [_ (..clean_files! fs root)
                _ (|> root
                      (# fs sub_directories)
                      (# ! each (monad.each ! again))
                      (# ! conjoint))]
               (# fs delete root)))
           (# ! in [])))]
    (console.write_line (..success target) console)))