webtask to upload things to s3

wt.js

var Promise = require('bluebird');
var request = Promise.promisify(require("request"));
var AWS = require('aws-sdk');

function slugify(text)
{
  return text.toString().toLowerCase()
    .replace(/\s+/g, '-')           // Replace spaces with -
    .replace(/[^\w\-]+/g, '')       // Remove all non-word chars
    .replace(/\-\-+/g, '-')         // Replace multiple - with single -
    .replace(/^-+/, '')             // Trim - from start of text
    .replace(/-+$/, '');            // Trim - from end of text
}

module.exports = function (context, cb) {
  console.log('init');

  AWS.config.update({
    region: 'us-west-1',
    accessKeyId: context.data.accessKeyId,
    secretAccessKey: context.data.secretAccessKey
  });

  var s3bucket = new AWS.S3({params: {Bucket: '...', Key: '...'}});

  request({
    
      method:'GET',
      url:'https://'+context.data.domain+'/...',
      headers:{
        ...
      }

    }).then(function(response){

      return JSON.parse(response[1]).data;

    }).filter(function(element){

      return element.visible && element.editable;

    }).map(function(element){

      var new_el = {
        required: element.required,
        title: element.title,
        type: element.type,
        id: element.id,
        slug: slugify(element.title)
      };

      
      return new_el;

    }).then(function(results){

      var params = { Body: JSON.stringify(results) };

      s3bucket.putObject(params, function (res) {
        cb(null, 'DONE');
      });

    }).catch(function(e) {
      cb(e);
    });

}