old_contents: define(function (require, exports, module) {
  
    const $ = require('jquery');
    const Events = require('plug/core/Events');
    const popoutView = require('plug/views/rooms/popout/PopoutView');
  
    function sync() {
      _.defer(() => {
        popoutView.$document.find('head').append($('.extplug-style').clone())
      });
    }
  
    exports.install = function () {
      Events.on('popout:show', sync);
    };
  
    exports.uninstall = function () {
      Events.off('popout:show', sync);
    };
  
  });
  
new_contents: define(function (require, exports, module) {
  
    const $ = require('jquery');
    const Events = require('plug/core/Events');
    const popoutView = require('plug/views/rooms/popout/PopoutView');
  
    function sync() {
      _.defer(() => {
        popoutView.$document.find('head').append($('.extplug-style').clone());
      });
    }
  
    exports.install = function () {
      Events.on('popout:show', sync);
    };
  
    exports.uninstall = function () {
      Events.off('popout:show', sync);
    };
  
  });
  
subject: make jscs happy (: