class ActiveSupport::NumberHelper::NumberToHumanConverter

def unit_exponents(units)
  case units
  when Hash
    units
  when String, Symbol
    I18n.translate(units.to_s, locale: options[:locale], raise: true)
  when nil
    translate_in_locale("human.decimal_units.units", raise: true)
  else
    raise ArgumentError, ":units must be a Hash or String translation scope."
  end.keys.map { |e_name| INVERTED_DECIMAL_UNITS[e_name] }.sort_by(&:-@)
end