Clean the dom when ember root view is ready

app-shell.js

export function initialize(appInstance) {
  if (typeof FastBoot === 'undefined') {
    let originalDidCreateRootView = appInstance.didCreateRootView;

    appInstance.didCreateRootView = function() {
      let elements = document.querySelectorAll(appInstance.rootElement + ' #app-shell');

      for (let i = 0; i < elements.length; i++) {
        let element = elements[i];
        element.parentNode.removeChild(element);
      }
      originalDidCreateRootView.apply(appInstance, arguments);
    };
  }
}

export default {
  initialize
};