module Rake
  class TaskLib
    include Rake::DSL
  end

  module DSL
    private

    include FileUtils

    def desc: (String description) -> void
    def directory: (*untyped args) ?{ () -> void } -> void
    def file: (*untyped args) ?{ () -> void } -> void
    def file_create: (*untyped args) ?{ () -> void } -> void
    def import: (*String fns) -> void
    def multitask: (*untyped args) ?{ () -> void } -> void
    def namespace: (?untyped name) ?{ () -> void } -> void
    def rule: (*untyped args) ?{ () -> void } -> void
    def task: (*untyped args) ?{ () -> void } -> void
  end
end

module FileUtils
  def sh: (*String cmd, **untyped options) ?{ (bool, Process::Status) -> void } -> void
  def ruby: (*String args, **untyped options) ?{ (bool, Process::Status) -> void } -> void
  def safe_ln: (*untyped args, **untyped options) -> void
  def split_all: (String path) -> Array[String]
end