old_contents: require('colors');
  let async = require('async');
  
  class Swarm {
    constructor(options) {
      this.options = options;
      this.buildDir = options.buildDir || 'dist/';
      this.swarm = options.swarm;
      this.getUrl = options.getUrl;
    }
  
    deploy(cb) {
      console.log(__("deploying to swarm!"));
      const self = this;
      const swarm = this.swarm;
      async.waterfall([
        function runCommand(callback) {
          console.log(("=== " + __("adding %s to swarm", self.buildDir)).green);
          swarm.putDirectory(self.buildDir, callback);
        },
        function printUrls(dir_hash, callback) {
          if (!dir_hash) {
            return callback('No directory hash was returned');
          }
          console.log(("=== " + __("DApp available at") + ` ${self.getUrl}${dir_hash}/`).green);
          console.log(("=== " + __("DApp available at") + ` https://swarm-gateways.net/bzz:/${dir_hash}`).green);
  
          callback(null, dir_hash);
        }
      ], function (err, dir_hash) {
        if (err) {
          console.log(__("error uploading to swarm").red);
          console.log(err);
          return cb(err);
        }
        cb(null, dir_hash);
      });
    }
  }
  
  module.exports = Swarm;
  
new_contents: require('colors');
  let async = require('async');
  
  class Swarm {
    constructor(options) {
      this.options = options;
      this.buildDir = options.buildDir || 'dist/';
      this.swarm = options.swarm;
      this.getUrl = options.getUrl;
    }
  
    deploy(cb) {
      console.log(__("deploying to swarm!"));
      const self = this;
      const swarm = this.swarm;
      async.waterfall([
        function runCommand(callback) {
          console.log(("=== " + __("adding %s to swarm", self.buildDir)).green);
          swarm.uploadDirectory(self.buildDir, callback);
        },
        function printUrls(dir_hash, callback) {
          if (!dir_hash) {
            return callback('No directory hash was returned');
          }
          console.log(("=== " + __("DApp available at") + ` ${self.getUrl}${dir_hash}/`).green);
          console.log(("=== " + __("DApp available at") + ` https://swarm-gateways.net/bzz:/${dir_hash}`).green);
  
          callback(null, dir_hash);
        }
      ], function (err, dir_hash) {
        if (err) {
          console.log(__("error uploading to swarm").red);
          console.log(err);
          return cb(err);
        }
        cb(null, dir_hash);
      });
    }
  }
  
  module.exports = Swarm;
  
subject: change to ‘uploadDirectory’