(function() {
  "use strict";

  function getScriptURL() {
    var scripts = document.getElementsByTagName('script');
    if (scripts && scripts.length) {
      for (var i = 0; i < scripts.length; i++) {
        if (scripts[i].src && scripts[i].src.match(/load_inspector.js$/)) {
          return scripts[i].src.replace(/\/load_inspector.js$/, '');
        }
      }
    }
    return null;
  }

  var url = getScriptURL();
  var windowUrl = url + '/{{PANE_ROOT}}' + '/index.html' + '?inspectedWindowURL=' + locationOrigin();
  var inspectorWindow;

  var pathArray = url.split( '/' );
  var base = pathArray[0] + '//' + pathArray[2];

  if (!supportsPopup()) {
    var iframe = document.createElement('iframe');
    iframe.width = '100%';
    iframe.height = '300';
    iframe.style.backgroundColor = 'white';
    iframe.style.position = 'absolute';
    iframe.style.bottom = '0';
    iframe.style.right = '0';
    iframe.style.zIndex = 100000;
    iframe.src = windowUrl;
    document.body.appendChild(iframe);
    inspectorWindow = iframe.contentWindow;
  } else {
    inspectorWindow = window.open(encodeURI(windowUrl), 'ember-inspector');
  }

  window.emberInspector = {
    w: inspectorWindow,
    url: base
  };

  /**
   * Handle Ember version mismatch. Re-injects
   * another version of ember-debug.
   *
   */
  window.addEventListener('message', e => {
    if (e.origin !== window.emberInspector.url) {
      return;
    }
    if (e.data.name === 'version-mismatch') {
      injectEmberDebug('panes-' + e.data.version.replace(/\./g, '-') + '/ember_debug.js');
    }
  });  

  if (!window.emberInspector) {
    alert('Unable to open the inspector in a popup.  Please enable popups and retry.');
    return;
  }
  document.documentElement.dataset.emberExtension = 1;

  function injectEmberDebug(fileName) {
    var script = document.createElement('script');
    script.src = url + '/' + fileName;
    document.body.appendChild(script);
  }

  injectEmberDebug('{{PANE_ROOT}}/ember_debug.js');

  function locationOrigin() {
    var origin = window.location.origin;
    if (!origin) {
      origin = window.location.protocol + "//" + window.location.hostname + (window.location.port ? ':' + window.location.port: '');
    }
    return origin;
  }

  function supportsPopup() {
    return !isIE();
  }

  function isIE() {
    return ((navigator.appName == 'Microsoft Internet Explorer') || ((navigator.appName == 'Netscape') && (new RegExp("Trident/.*rv:([0-9]{1,}[\.0-9]{0,})").exec(navigator.userAgent) != null)));
  }
}());

(function() {
  "use strict";

  function getScriptURL() {
    var scripts = document.getElementsByTagName('script');
    if (scripts && scripts.length) {
      for (var i = 0; i < scripts.length; i++) {
        if (scripts[i].src && scripts[i].src.match(/load_inspector.js$/)) {
          return scripts[i].src.replace(/\/load_inspector.js$/, '');
        }
      }
    }
    return null;
  }

  var url = getScriptURL();
  var windowUrl = url + '/{{PANE_ROOT}}' + '/index.html' + '?inspectedWindowURL=' + locationOrigin();
  var inspectorWindow;

  var pathArray = url.split( '/' );
  var base = pathArray[0] + '//' + pathArray[2];

  if (!supportsPopup()) {
    var iframe = document.createElement('iframe');
    iframe.width = '100%';
    iframe.height = '300';
    iframe.style.backgroundColor = 'white';
    iframe.style.position = 'absolute';
    iframe.style.bottom = '0';
    iframe.style.right = '0';
    iframe.style.zIndex = 100000;
    iframe.src = windowUrl;
    document.body.appendChild(iframe);
    inspectorWindow = iframe.contentWindow;
  } else {
    inspectorWindow = window.open(encodeURI(windowUrl), 'ember-inspector');
  }

  window.emberInspector = {
    w: inspectorWindow,
    url: base
  };

  /**
   * Handle Ember version mismatch. Re-injects
   * another version of ember-debug.
   *
   */
  window.addEventListener('message', function(e) {
    if (e.origin !== window.emberInspector.url) {
      return;
    }
    if (e.data.name === 'version-mismatch') {
      injectEmberDebug('panes-' + e.data.version.replace(/\./g, '-') + '/ember_debug.js');
    }
  });  

  if (!window.emberInspector) {
    alert('Unable to open the inspector in a popup.  Please enable popups and retry.');
    return;
  }
  document.documentElement.dataset.emberExtension = 1;

  function injectEmberDebug(fileName) {
    var script = document.createElement('script');
    script.src = url + '/' + fileName;
    document.body.appendChild(script);
  }

  injectEmberDebug('{{PANE_ROOT}}/ember_debug.js');

  function locationOrigin() {
    var origin = window.location.origin;
    if (!origin) {
      origin = window.location.protocol + "//" + window.location.hostname + (window.location.port ? ':' + window.location.port: '');
    }
    return origin;
  }

  function supportsPopup() {
    return !isIE();
  }

  function isIE() {
    return ((navigator.appName == 'Microsoft Internet Explorer') || ((navigator.appName == 'Netscape') && (new RegExp("Trident/.*rv:([0-9]{1,}[\.0-9]{0,})").exec(navigator.userAgent) != null)));
  }
}());

Remove arrow function syntax