class Opal::CLI

def evals_or_file_source
  return if lib_only # --library
  return @cached_content if @cached_content
  unless file.tty?
    begin
      file.rewind
      can_read_again = true
    rescue Errno::ESPIPE # rubocop:disable Lint/HandleExceptions
      # noop
    end
  end
  if @cached_content.nil? || can_read_again
    # On MacOS file.read is not enough to pick up changes, probably due to some
    # cache or buffer, unclear if coming from ruby or the OS.
    content = File.file?(file) ? File.read(file) : file.read
  end
  @cached_content ||= content unless can_read_again
  content
end