Script Rocket.Chat bot only release

release.js

/* exported Script */

String.prototype.capitalizeFirstLetter = function() {
    return this.charAt(0).toUpperCase() + this.slice(1);
}

const getLabelsField = (labels) => {
  let labelsArray = [];
  labels.forEach(function(label) {
    labelsArray.push(label.name);
  });
  labelsArray = labelsArray.join(', ');
  return {
    title: 'Labels',
    value: labelsArray,
    short: labelsArray.length <= 40
  };
};

const githubEvents = {
  ping(request) {
    return {
      content: {
        text: '_' + request.content.repository.full_name + '_\n' + ':thumbsup: ' + request.content.zen
      }
    };
  },

  release(request){
    const user = request.content.sender;
    var d = new Date(request.content.release.published_at);


    var body = "**Title**: " + request.content.release.name+"\n **Describe**: "
              + request.content.release.body + "\n\n **Released by** " +
              "[" + request.content.release.author.login + "](" + request.content.release.author.html_url + ") at "
              + d.toLocaleString();

    var text = '**Repository ' + "["+request.content.repository.full_name+"]("+request.content.repository.url+"):"
                + request.content.release.tag_name + "**\n\n" + body;

    return {
      content: {
        attachments: [
            {
                thumb_url: user.avatar_url,
                text: text,
                fields: []
            }
        ]
      }
    };

  },

};

class Script {
  process_incoming_request({ request }) {
    const header = request.headers['x-github-event'];
    if (githubEvents[header]) {
      return githubEvents[header](request);
    }

    return {
      error: {
        success: false,
        message: 'Unsupported method'
      }
    };
  }
}