old_contents: // @flow
  import $ from 'jquery';
  
  if (!window.$) window.$ = $;
  
  export default $;
  
new_contents: // @flow
  import $ from 'jquery';
  
  if (!window.$) window.$ = window.jQuery = $;
  
  // jQuery plugins
  require('jquery-ui');
  require('jquery-ujs');
  require('selectize');
  require('jquery-sticky');
  
  export default $;
  
subject: Move jquery plugins to vendor/jquery