module Dyndnsd
  class TextfileReporter
    attr_reader file: String

    def initialize: (String file, ?Hash[Symbol, untyped] options) -> void

    def start: () -> void

    def stop: () -> void

    def restart: () -> void

    def write: () -> void

    def write_metric: (File file, String base_name, untyped metric, Array[Symbol] keys, Array[Symbol] snapshot_keys) -> void
  end
end