A ruby module that instantly turns json into an object

jsonobj.rb

require 'json'

module JSONObject
  def self.create(json)
    data = JSON.parse(json)

    klass = Class.new do
      data.each do |key, value|
        attr_accessor key.to_sym
        define_method(:initialize) { |**args| args.each { |k, v| instance_variable_set("@#{k}", v) } }
      end
    end
    klass.new(data)
  end
  def self.to_json(obj)
    data = {}

    obj.instance_variables.each do |var|
      key = var.to_s.delete("@").to_sym
      data[key] = obj.instance_variable_get(var)
    end

    JSON.generate(data)
  end
end