class Lumberjack::Tags

def expand_runtime_values(hash)
  return nil if hash.nil?
  if hash.all? { |key, value| key.is_a?(String) && !value.is_a?(Proc) }
    return hash
  end
  copy = {}
  hash.each do |key, value|
    if value.is_a?(Proc) && (value.arity == 0 || value.arity == -1)
      value = value.call
    end
    copy[key.to_s] = value
  end
  copy
end

def stringify_keys(hash)
  return nil if hash.nil?
  if hash.keys.all? { |key| key.is_a?(String) }
    hash
  elsif hash.respond_to?(:transform_keys)
    hash.transform_keys(&:to_s)
  else
    copy = {}
    hash.each do |key, value|
      copy[key.to_s] = value
    end
    copy
  end
end