You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: java_script_agent.rb
    path of file: ./repos/huginn/app/models/agents
    
    the code of the file until where you have to start completion: require 'date'
require 'cgi'

module Agents
  class JavaScriptAgent < Agent
    include FormConfigurable

    can_dry_run!

    default_schedule "never"

    gem_dependency_check { defined?(MiniRacer) }

    description <<~MD
      The JavaScript Agent allows you to write code in JavaScript that can create and receive events.  If other Agents aren't meeting your needs, try this one!

      #{'## Include `mini_racer` in your Gemfile to use this Agent!' if dependencies_missing?}

      You can put code in the `code` option, or put your code in a Credential and reference it from `code` with `credential:<name>` (recommended).

      You can implement `Agent.check` and `Agent.receive` as you see fit.  The following methods will be available on Agent in the JavaScript environment:

      * `this.createEvent(payload
    
    def setup_javascript
      <<-JS
        function Agent() {};

        Agent.createEvent = function(opts) {
          return JSON.parse(doCreateEvent(JSON.stringify(opts)));
        }

        Agent.incomingEvents = function() {
          return JSON.parse(getIncomingEvents());
        }

        Agent.memory = function(key, value) {
          if (typeof(key) !== "undefined" && typeof(value) !== "undefined") {
            setMemoryKey(key, value);
          } else if (typeof(key) !== "undefined") {
            return JSON.parse(getMemory())[key];
          } else {
            return JSON.parse(getMemory());
          }
        }

        Agent.setMemory = function(obj) {
          setMemory(obj);
        }

        Agent.credential = function(name, value) {
          if (typeof(value) !== "undefined") {
            setCredential(name, value);
          } else {
            return getCredential(name);
          }
        }

        Agent.options = function(key) {
          if (typeof(key) !== "undefined") {
            return JSON.parse(getOptions())[key];
          } else {
            return JSON.parse(getOptions());
          }
        }

        Agent.log = function(message) {
          doLog(message);
        }

        Agent.error = function(message) {
          doError(message);
        }

        Agent.deleteKey = function(key) {
          return JSON.parse(deleteKey(key));
        }

        Agent.escapeHtml = function(html) {
          return escapeHtml(html);
        }

        Agent.unescapeHtml = function(html) {
          return unescapeHtml(html);
        }

        Agent.check = function(){};
        Agent.receive = function(){};
      JS
    end