diff --git a/node_modules/dialog-polyfill/README.md b/node_modules/dialog-polyfill/README.md
index fa907ec..749f9ae 100644
--- a/node_modules/dialog-polyfill/README.md
+++ b/node_modules/dialog-polyfill/README.md
@@ -1,5 +1,5 @@
 dialog-polyfill.js is a polyfill for `<dialog>` and `<form method="dialog">`.
-Check out [some demos](http://demo.agektmr.com/dialog/)!
+Check out [some demos](https://googlechrome.github.io/dialog-polyfill/)!
 
 `<dialog>` is an element for a popup box in a web page, including a modal option which will make the rest of the page inert during use.
 This could be useful to block a user's interaction until they give you a response, or to confirm an action.
@@ -16,14 +16,14 @@
 
 There are several ways that to include the dialog polyfill:
 
-* include `dialog-polyfill.js` script directly in your HTML, which exposes a global `dialogPolyfill` function.
+* include `dist/dialog-polyfill.js` script directly in your HTML, which exposes a global `dialogPolyfill` function.
 * `import` (es modules)
 * `require` (commonjs/node)
 
 
 ```javascript
 // direct import (script module, deno)
-import dialogPolyfill from './node_modules/dialog-polyfill/index.js';
+import dialogPolyfill from './node_modules/dialog-polyfill/dist/dialog-polyfill.esm.js';
 
 // *OR*
 
@@ -39,11 +39,13 @@
 
 ### Supports
 
-This polyfill works on modern versions of all major browsers. It also supports IE9 and above.
+This polyfill works on modern versions of all major browsers.
+It also supports IE9 and above.
+It can work when used inside Shadow DOM, but it's not recommended.
 
 ### Steps
 
-1. Include the CSS in the `<head>` of your document, and the Javascript anywhere before referencing `dialogPolyfill`.
+1. Include the CSS in the `<head>` of your document, and the JS anywhere before referencing `dialogPolyfill`.
 2. Create your dialog elements within the document. See [limitations](#limitations) for more details.
 3. Register the elements using `dialogPolyfill.registerDialog()`, passing it one node at a time. This polyfill won't replace native support.
 4. Use your `<dialog>` elements!
@@ -65,7 +67,7 @@
   <script>
     var dialog = document.querySelector('dialog');
     dialogPolyfill.registerDialog(dialog);
-    // Now dialog acts like a native <dialog>.
+    // Now dialog always acts like a native <dialog>.
     dialog.showModal();
   </script>
 </body>
@@ -114,6 +116,9 @@
 }
 ```
 
+This is also provided as a helper CSS class in the polyfill CSS, `.fixed`.
+You can apply by using HTML like `<dialog class="fixed">`.
+
 ## Extensions
 
 ### Focus
diff --git a/node_modules/dialog-polyfill/dist/dialog-polyfill.esm.js b/node_modules/dialog-polyfill/dist/dialog-polyfill.esm.js
index d866b94..471f55e 100644
--- a/node_modules/dialog-polyfill/dist/dialog-polyfill.esm.js
+++ b/node_modules/dialog-polyfill/dist/dialog-polyfill.esm.js
@@ -11,6 +11,22 @@
 }
 
 /**
+ * Dispatches the passed event to both an "on<type>" handler as well as via the
+ * normal dispatch operation. Does not bubble.
+ *
+ * @param {!EventTarget} target
+ * @param {!Event} event
+ * @return {boolean}
+ */
+function safeDispatchEvent(target, event) {
+  var check = 'on' + event.type.toLowerCase();
+  if (typeof target[check] === 'function') {
+    target[check](event);
+  }
+  return target.dispatchEvent(event);
+}
+
+/**
  * @param {Element} el to check for stacking context
  * @return {boolean} whether this el or its parents creates a stacking context
  */
@@ -20,7 +36,7 @@
     var invalid = function(k, ok) {
       return !(s[k] === undefined || s[k] === ok);
     };
-    
+
     if (s.opacity < 1 ||
         invalid('zIndex', 'auto') ||
         invalid('transform', 'none') ||
@@ -61,6 +77,11 @@
  * @param {Element} el to blur
  */
 function safeBlur(el) {
+  // Find the actual focused element when the active element is inside a shadow root
+  while (el && el.shadowRoot && el.shadowRoot.activeElement) {
+    el = el.shadowRoot.activeElement;
+  }
+
   if (el && el.blur && el !== document.body) {
     el.blur();
   }
@@ -92,6 +113,110 @@
 }
 
 /**
+ * @param {!DocumentFragment|!Element} hostElement
+ * @return {?Element}
+ */
+function findFocusableElementWithin(hostElement) {
+  // Note that this is 'any focusable area'. This list is probably not exhaustive, but the
+  // alternative involves stepping through and trying to focus everything.
+  var opts = ['button', 'input', 'keygen', 'select', 'textarea'];
+  var query = opts.map(function(el) {
+    return el + ':not([disabled])';
+  });
+  // TODO(samthor): tabindex values that are not numeric are not focusable.
+  query.push('[tabindex]:not([disabled]):not([tabindex=""])');  // tabindex != "", not disabled
+  var target = hostElement.querySelector(query.join(', '));
+
+  if (!target && 'attachShadow' in Element.prototype) {
+    // If we haven't found a focusable target, see if the host element contains an element
+    // which has a shadowRoot.
+    // Recursively search for the first focusable item in shadow roots.
+    var elems = hostElement.querySelectorAll('*');
+    for (var i = 0; i < elems.length; i++) {
+      if (elems[i].tagName && elems[i].shadowRoot) {
+        target = findFocusableElementWithin(elems[i].shadowRoot);
+        if (target) {
+          break;
+        }
+      }
+    }
+  }
+  return target;
+}
+
+/**
+ * Determines if an element is attached to the DOM.
+ * @param {Element} element to check
+ * @return {Boolean} whether the element is in DOM
+ */
+function isConnected(element) {
+  return element.isConnected || document.body.contains(element);
+}
+
+/**
+ * @param {!Event} event
+ */
+function findFormSubmitter(event) {
+  if (event.submitter) {
+    return event.submitter;
+  }
+
+  var form = event.target;
+  if (!(form instanceof HTMLFormElement)) {
+    return null;
+  }
+
+  var submitter = dialogPolyfill.formSubmitter;
+  if (!submitter) {
+    var target = event.target;
+    var root = ('getRootNode' in target && target.getRootNode() || document);
+    submitter = root.activeElement;
+  }
+
+  if (submitter.form !== form) {
+    return null;
+  }
+  return submitter;
+}
+
+/**
+ * @param {!Event} event
+ */
+function maybeHandleSubmit(event) {
+  if (event.defaultPrevented) {
+    return;
+  }
+  var form = /** @type {!HTMLFormElement} */ (event.target);
+
+  // We'd have a value if we clicked on an imagemap.
+  var value = dialogPolyfill.useValue;
+  var submitter = findFormSubmitter(event);
+  if (value === null && submitter) {
+    value = submitter.value;
+  }
+
+  // There should always be a dialog as this handler is added specifically on them, but check just
+  // in case.
+  var dialog = findNearestDialog(form);
+  if (!dialog) {
+    return;
+  }
+
+  // Prefer formmethod on the button.
+  var formmethod = submitter && submitter.getAttribute('formmethod') || form.getAttribute('method');
+  if (formmethod !== 'dialog') {
+    return;
+  }
+  event.preventDefault();
+
+  if (submitter) {
+    dialog.close(value);
+  } else {
+    dialog.close();
+  }
+}
+
+/**
  * @param {!HTMLDialogElement} dialog to upgrade
  * @constructor
  */
@@ -109,6 +234,8 @@
   dialog.showModal = this.showModal.bind(this);
   dialog.close = this.close.bind(this);
 
+  dialog.addEventListener('submit', maybeHandleSubmit, false);
+
   if (!('returnValue' in dialog)) {
     dialog.returnValue = '';
   }
@@ -147,10 +274,12 @@
 
   this.backdrop_ = document.createElement('div');
   this.backdrop_.className = 'backdrop';
-  this.backdrop_.addEventListener('click', this.backdropClick_.bind(this));
+  this.backdrop_.addEventListener('mouseup'  , this.backdropMouseEvent_.bind(this));
+  this.backdrop_.addEventListener('mousedown', this.backdropMouseEvent_.bind(this));
+  this.backdrop_.addEventListener('click'    , this.backdropMouseEvent_.bind(this));
 }
 
-dialogPolyfillInfo.prototype = {
+dialogPolyfillInfo.prototype = /** @type {HTMLDialogElement.prototype} */ ({
 
   get dialog() {
     return this.dialog_;
@@ -162,7 +291,7 @@
    * longer open or is no longer part of the DOM.
    */
   maybeHideModal: function() {
-    if (this.dialog_.hasAttribute('open') && document.body.contains(this.dialog_)) { return; }
+    if (this.dialog_.hasAttribute('open') && isConnected(this.dialog_)) { return; }
     this.downgradeModal();
   },
 
@@ -200,12 +329,12 @@
   },
 
   /**
-   * Handles clicks on the fake .backdrop element, redirecting them as if
+   * Handles mouse events ('mouseup', 'mousedown', 'click') on the fake .backdrop element, redirecting them as if
    * they were on the dialog itself.
    *
    * @param {!Event} e to redirect
    */
-  backdropClick_: function(e) {
+  backdropMouseEvent_: function(e) {
     if (!this.dialog_.hasAttribute('tabindex')) {
       // Clicking on the backdrop should move the implicit cursor, even if dialog cannot be
       // focused. Create a fake thing to focus on. If the backdrop was _before_ the dialog, this
@@ -238,15 +367,7 @@
       target = this.dialog_;
     }
     if (!target) {
-      // Note that this is 'any focusable area'. This list is probably not exhaustive, but the
-      // alternative involves stepping through and trying to focus everything.
-      var opts = ['button', 'input', 'keygen', 'select', 'textarea'];
-      var query = opts.map(function(el) {
-        return el + ':not([disabled])';
-      });
-      // TODO(samthor): tabindex values that are not numeric are not focusable.
-      query.push('[tabindex]:not([disabled]):not([tabindex=""])');  // tabindex != "", not disabled
-      target = this.dialog_.querySelector(query.join(', '));
+      target = findFocusableElementWithin(this.dialog_);
     }
     safeBlur(document.activeElement);
     target && target.focus();
@@ -283,7 +404,7 @@
     if (this.dialog_.hasAttribute('open')) {
       throw new Error('Failed to execute \'showModal\' on dialog: The element is already open, and therefore cannot be opened modally.');
     }
-    if (!document.body.contains(this.dialog_)) {
+    if (!isConnected(this.dialog_)) {
       throw new Error('Failed to execute \'showModal\' on dialog: The element is not in a Document.');
     }
     if (!dialogPolyfill.dm.pushDialog(this)) {
@@ -336,10 +457,10 @@
       bubbles: false,
       cancelable: false
     });
-    this.dialog_.dispatchEvent(closeEvent);
+    safeDispatchEvent(this.dialog_, closeEvent);
   }
 
-};
+});
 
 var dialogPolyfill = {};
 
@@ -526,24 +647,26 @@
 };
 
 dialogPolyfill.DialogManager.prototype.handleFocus_ = function(event) {
-  if (this.containedByTopDialog_(event.target)) { return; }
+  var target = event.composedPath ? event.composedPath()[0] : event.target;
+
+  if (this.containedByTopDialog_(target)) { return; }
 
   if (document.activeElement === document.documentElement) { return; }
 
   event.preventDefault();
   event.stopPropagation();
-  safeBlur(/** @type {Element} */ (event.target));
+  safeBlur(/** @type {Element} */ (target));
 
   if (this.forwardTab_ === undefined) { return; }  // move focus only from a tab key
 
   var dpi = this.pendingDialogStack[0];
   var dialog = dpi.dialog;
-  var position = dialog.compareDocumentPosition(event.target);
+  var position = dialog.compareDocumentPosition(target);
   if (position & Node.DOCUMENT_POSITION_PRECEDING) {
     if (this.forwardTab_) {
       // forward
       dpi.focus_();
-    } else if (event.target !== document.documentElement) {
+    } else if (target !== document.documentElement) {
       // backwards if we're not already focused on <html>
       document.documentElement.focus();
     }
@@ -562,7 +685,7 @@
       cancelable: true
     });
     var dpi = this.pendingDialogStack[0];
-    if (dpi && dpi.dialog.dispatchEvent(cancelEvent)) {
+    if (dpi && safeDispatchEvent(dpi.dialog, cancelEvent)) {
       dpi.dialog.close();
     }
   } else if (event.keyCode === 9) {
@@ -649,6 +772,7 @@
         return realGet.call(this);
       };
       var realSet = methodDescriptor.set;
+      /** @this {HTMLElement} */
       methodDescriptor.set = function(v) {
         if (typeof v === 'string' && v.toLowerCase() === 'dialog') {
           return this.setAttribute('method', v);
@@ -670,6 +794,10 @@
     if (ev.defaultPrevented) { return; }  // e.g. a submit which prevents default submission
 
     var target = /** @type {Element} */ (ev.target);
+    if ('composedPath' in ev) {
+      var path = ev.composedPath();
+      target = path.shift() || target;
+    }
     if (!target || !isFormMethodDialog(target.form)) { return; }
 
     var valid = (target.type === 'submit' && ['button', 'input'].indexOf(target.localName) > -1);
@@ -687,6 +815,24 @@
   }, false);
 
   /**
+   * Global 'submit' handler. This handles submits of `method="dialog"` which are invalid, i.e.,
+   * outside a dialog. They get prevented.
+   */
+  document.addEventListener('submit', function(ev) {
+    var form = ev.target;
+    var dialog = findNearestDialog(form);
+    if (dialog) {
+      return;  // ignore, handle there
+    }
+
+    var submitter = findFormSubmitter(ev);
+    var formmethod = submitter && submitter.getAttribute('formmethod') || form.getAttribute('method');
+    if (formmethod === 'dialog') {
+      ev.preventDefault();
+    }
+  });
+
+  /**
    * Replace the native HTMLFormElement.submit() method, as it won't fire the
    * submit event and give us a chance to respond.
    */
@@ -699,30 +845,6 @@
     dialog && dialog.close();
   };
   HTMLFormElement.prototype.submit = replacementFormSubmit;
-
-  /**
-   * Global form 'dialog' method handler. Closes a dialog correctly on submit
-   * and possibly sets its return value.
-   */
-  document.addEventListener('submit', function(ev) {
-    var form = /** @type {HTMLFormElement} */ (ev.target);
-    if (!isFormMethodDialog(form)) { return; }
-    ev.preventDefault();
-
-    var dialog = findNearestDialog(form);
-    if (!dialog) { return; }
-
-    // Forms can only be submitted via .submit() or a click (?), but anyway: sanity-check that
-    // the submitter is correct before using its value as .returnValue.
-    var s = dialogPolyfill.formSubmitter;
-    if (s && s.form === form) {
-      dialog.close(dialogPolyfill.useValue || s.value);
-    } else {
-      dialog.close();
-    }
-    dialogPolyfill.formSubmitter = null;
-
-  }, true);
 }
 
 export default dialogPolyfill;
diff --git a/node_modules/dialog-polyfill/dist/dialog-polyfill.js b/node_modules/dialog-polyfill/dist/dialog-polyfill.js
index 72a4ab9..bd60a70 100644
--- a/node_modules/dialog-polyfill/dist/dialog-polyfill.js
+++ b/node_modules/dialog-polyfill/dist/dialog-polyfill.js
@@ -17,6 +17,22 @@
   }
 
   /**
+   * Dispatches the passed event to both an "on<type>" handler as well as via the
+   * normal dispatch operation. Does not bubble.
+   *
+   * @param {!EventTarget} target
+   * @param {!Event} event
+   * @return {boolean}
+   */
+  function safeDispatchEvent(target, event) {
+    var check = 'on' + event.type.toLowerCase();
+    if (typeof target[check] === 'function') {
+      target[check](event);
+    }
+    return target.dispatchEvent(event);
+  }
+
+  /**
    * @param {Element} el to check for stacking context
    * @return {boolean} whether this el or its parents creates a stacking context
    */
@@ -26,7 +42,7 @@
       var invalid = function(k, ok) {
         return !(s[k] === undefined || s[k] === ok);
       };
-      
+
       if (s.opacity < 1 ||
           invalid('zIndex', 'auto') ||
           invalid('transform', 'none') ||
@@ -67,6 +83,11 @@
    * @param {Element} el to blur
    */
   function safeBlur(el) {
+    // Find the actual focused element when the active element is inside a shadow root
+    while (el && el.shadowRoot && el.shadowRoot.activeElement) {
+      el = el.shadowRoot.activeElement;
+    }
+
     if (el && el.blur && el !== document.body) {
       el.blur();
     }
@@ -98,6 +119,110 @@
   }
 
   /**
+   * @param {!DocumentFragment|!Element} hostElement
+   * @return {?Element}
+   */
+  function findFocusableElementWithin(hostElement) {
+    // Note that this is 'any focusable area'. This list is probably not exhaustive, but the
+    // alternative involves stepping through and trying to focus everything.
+    var opts = ['button', 'input', 'keygen', 'select', 'textarea'];
+    var query = opts.map(function(el) {
+      return el + ':not([disabled])';
+    });
+    // TODO(samthor): tabindex values that are not numeric are not focusable.
+    query.push('[tabindex]:not([disabled]):not([tabindex=""])');  // tabindex != "", not disabled
+    var target = hostElement.querySelector(query.join(', '));
+
+    if (!target && 'attachShadow' in Element.prototype) {
+      // If we haven't found a focusable target, see if the host element contains an element
+      // which has a shadowRoot.
+      // Recursively search for the first focusable item in shadow roots.
+      var elems = hostElement.querySelectorAll('*');
+      for (var i = 0; i < elems.length; i++) {
+        if (elems[i].tagName && elems[i].shadowRoot) {
+          target = findFocusableElementWithin(elems[i].shadowRoot);
+          if (target) {
+            break;
+          }
+        }
+      }
+    }
+    return target;
+  }
+
+  /**
+   * Determines if an element is attached to the DOM.
+   * @param {Element} element to check
+   * @return {Boolean} whether the element is in DOM
+   */
+  function isConnected(element) {
+    return element.isConnected || document.body.contains(element);
+  }
+
+  /**
+   * @param {!Event} event
+   */
+  function findFormSubmitter(event) {
+    if (event.submitter) {
+      return event.submitter;
+    }
+
+    var form = event.target;
+    if (!(form instanceof HTMLFormElement)) {
+      return null;
+    }
+
+    var submitter = dialogPolyfill.formSubmitter;
+    if (!submitter) {
+      var target = event.target;
+      var root = ('getRootNode' in target && target.getRootNode() || document);
+      submitter = root.activeElement;
+    }
+
+    if (submitter.form !== form) {
+      return null;
+    }
+    return submitter;
+  }
+
+  /**
+   * @param {!Event} event
+   */
+  function maybeHandleSubmit(event) {
+    if (event.defaultPrevented) {
+      return;
+    }
+    var form = /** @type {!HTMLFormElement} */ (event.target);
+
+    // We'd have a value if we clicked on an imagemap.
+    var value = dialogPolyfill.useValue;
+    var submitter = findFormSubmitter(event);
+    if (value === null && submitter) {
+      value = submitter.value;
+    }
+
+    // There should always be a dialog as this handler is added specifically on them, but check just
+    // in case.
+    var dialog = findNearestDialog(form);
+    if (!dialog) {
+      return;
+    }
+
+    // Prefer formmethod on the button.
+    var formmethod = submitter && submitter.getAttribute('formmethod') || form.getAttribute('method');
+    if (formmethod !== 'dialog') {
+      return;
+    }
+    event.preventDefault();
+
+    if (submitter) {
+      dialog.close(value);
+    } else {
+      dialog.close();
+    }
+  }
+
+  /**
    * @param {!HTMLDialogElement} dialog to upgrade
    * @constructor
    */
@@ -115,6 +240,8 @@
     dialog.showModal = this.showModal.bind(this);
     dialog.close = this.close.bind(this);
 
+    dialog.addEventListener('submit', maybeHandleSubmit, false);
+
     if (!('returnValue' in dialog)) {
       dialog.returnValue = '';
     }
@@ -153,10 +280,12 @@
 
     this.backdrop_ = document.createElement('div');
     this.backdrop_.className = 'backdrop';
-    this.backdrop_.addEventListener('click', this.backdropClick_.bind(this));
+    this.backdrop_.addEventListener('mouseup'  , this.backdropMouseEvent_.bind(this));
+    this.backdrop_.addEventListener('mousedown', this.backdropMouseEvent_.bind(this));
+    this.backdrop_.addEventListener('click'    , this.backdropMouseEvent_.bind(this));
   }
 
-  dialogPolyfillInfo.prototype = {
+  dialogPolyfillInfo.prototype = /** @type {HTMLDialogElement.prototype} */ ({
 
     get dialog() {
       return this.dialog_;
@@ -168,7 +297,7 @@
      * longer open or is no longer part of the DOM.
      */
     maybeHideModal: function() {
-      if (this.dialog_.hasAttribute('open') && document.body.contains(this.dialog_)) { return; }
+      if (this.dialog_.hasAttribute('open') && isConnected(this.dialog_)) { return; }
       this.downgradeModal();
     },
 
@@ -206,12 +335,12 @@
     },
 
     /**
-     * Handles clicks on the fake .backdrop element, redirecting them as if
+     * Handles mouse events ('mouseup', 'mousedown', 'click') on the fake .backdrop element, redirecting them as if
      * they were on the dialog itself.
      *
      * @param {!Event} e to redirect
      */
-    backdropClick_: function(e) {
+    backdropMouseEvent_: function(e) {
       if (!this.dialog_.hasAttribute('tabindex')) {
         // Clicking on the backdrop should move the implicit cursor, even if dialog cannot be
         // focused. Create a fake thing to focus on. If the backdrop was _before_ the dialog, this
@@ -244,15 +373,7 @@
         target = this.dialog_;
       }
       if (!target) {
-        // Note that this is 'any focusable area'. This list is probably not exhaustive, but the
-        // alternative involves stepping through and trying to focus everything.
-        var opts = ['button', 'input', 'keygen', 'select', 'textarea'];
-        var query = opts.map(function(el) {
-          return el + ':not([disabled])';
-        });
-        // TODO(samthor): tabindex values that are not numeric are not focusable.
-        query.push('[tabindex]:not([disabled]):not([tabindex=""])');  // tabindex != "", not disabled
-        target = this.dialog_.querySelector(query.join(', '));
+        target = findFocusableElementWithin(this.dialog_);
       }
       safeBlur(document.activeElement);
       target && target.focus();
@@ -289,7 +410,7 @@
       if (this.dialog_.hasAttribute('open')) {
         throw new Error('Failed to execute \'showModal\' on dialog: The element is already open, and therefore cannot be opened modally.');
       }
-      if (!document.body.contains(this.dialog_)) {
+      if (!isConnected(this.dialog_)) {
         throw new Error('Failed to execute \'showModal\' on dialog: The element is not in a Document.');
       }
       if (!dialogPolyfill.dm.pushDialog(this)) {
@@ -342,10 +463,10 @@
         bubbles: false,
         cancelable: false
       });
-      this.dialog_.dispatchEvent(closeEvent);
+      safeDispatchEvent(this.dialog_, closeEvent);
     }
 
-  };
+  });
 
   var dialogPolyfill = {};
 
@@ -532,24 +653,26 @@
   };
 
   dialogPolyfill.DialogManager.prototype.handleFocus_ = function(event) {
-    if (this.containedByTopDialog_(event.target)) { return; }
+    var target = event.composedPath ? event.composedPath()[0] : event.target;
+
+    if (this.containedByTopDialog_(target)) { return; }
 
     if (document.activeElement === document.documentElement) { return; }
 
     event.preventDefault();
     event.stopPropagation();
-    safeBlur(/** @type {Element} */ (event.target));
+    safeBlur(/** @type {Element} */ (target));
 
     if (this.forwardTab_ === undefined) { return; }  // move focus only from a tab key
 
     var dpi = this.pendingDialogStack[0];
     var dialog = dpi.dialog;
-    var position = dialog.compareDocumentPosition(event.target);
+    var position = dialog.compareDocumentPosition(target);
     if (position & Node.DOCUMENT_POSITION_PRECEDING) {
       if (this.forwardTab_) {
         // forward
         dpi.focus_();
-      } else if (event.target !== document.documentElement) {
+      } else if (target !== document.documentElement) {
         // backwards if we're not already focused on <html>
         document.documentElement.focus();
       }
@@ -568,7 +691,7 @@
         cancelable: true
       });
       var dpi = this.pendingDialogStack[0];
-      if (dpi && dpi.dialog.dispatchEvent(cancelEvent)) {
+      if (dpi && safeDispatchEvent(dpi.dialog, cancelEvent)) {
         dpi.dialog.close();
       }
     } else if (event.keyCode === 9) {
@@ -655,6 +778,7 @@
           return realGet.call(this);
         };
         var realSet = methodDescriptor.set;
+        /** @this {HTMLElement} */
         methodDescriptor.set = function(v) {
           if (typeof v === 'string' && v.toLowerCase() === 'dialog') {
             return this.setAttribute('method', v);
@@ -676,6 +800,10 @@
       if (ev.defaultPrevented) { return; }  // e.g. a submit which prevents default submission
 
       var target = /** @type {Element} */ (ev.target);
+      if ('composedPath' in ev) {
+        var path = ev.composedPath();
+        target = path.shift() || target;
+      }
       if (!target || !isFormMethodDialog(target.form)) { return; }
 
       var valid = (target.type === 'submit' && ['button', 'input'].indexOf(target.localName) > -1);
@@ -693,6 +821,24 @@
     }, false);
 
     /**
+     * Global 'submit' handler. This handles submits of `method="dialog"` which are invalid, i.e.,
+     * outside a dialog. They get prevented.
+     */
+    document.addEventListener('submit', function(ev) {
+      var form = ev.target;
+      var dialog = findNearestDialog(form);
+      if (dialog) {
+        return;  // ignore, handle there
+      }
+
+      var submitter = findFormSubmitter(ev);
+      var formmethod = submitter && submitter.getAttribute('formmethod') || form.getAttribute('method');
+      if (formmethod === 'dialog') {
+        ev.preventDefault();
+      }
+    });
+
+    /**
      * Replace the native HTMLFormElement.submit() method, as it won't fire the
      * submit event and give us a chance to respond.
      */
@@ -705,30 +851,6 @@
       dialog && dialog.close();
     };
     HTMLFormElement.prototype.submit = replacementFormSubmit;
-
-    /**
-     * Global form 'dialog' method handler. Closes a dialog correctly on submit
-     * and possibly sets its return value.
-     */
-    document.addEventListener('submit', function(ev) {
-      var form = /** @type {HTMLFormElement} */ (ev.target);
-      if (!isFormMethodDialog(form)) { return; }
-      ev.preventDefault();
-
-      var dialog = findNearestDialog(form);
-      if (!dialog) { return; }
-
-      // Forms can only be submitted via .submit() or a click (?), but anyway: sanity-check that
-      // the submitter is correct before using its value as .returnValue.
-      var s = dialogPolyfill.formSubmitter;
-      if (s && s.form === form) {
-        dialog.close(dialogPolyfill.useValue || s.value);
-      } else {
-        dialog.close();
-      }
-      dialogPolyfill.formSubmitter = null;
-
-    }, true);
   }
 
   return dialogPolyfill;
diff --git a/node_modules/dialog-polyfill/index.d.ts b/node_modules/dialog-polyfill/index.d.ts
new file mode 100644
index 0000000..2d4de1d
--- /dev/null
+++ b/node_modules/dialog-polyfill/index.d.ts
@@ -0,0 +1,18 @@
+
+interface DialogPolyfillType {
+  registerDialog(dialog: HTMLDialogElement): void;
+  forceRegisterDialog(dialog: HTMLDialogElement): void;
+}
+
+/**
+ * If used as CJS, then "dialogPolyfill" is added to the global scope. Just assert it exists.
+ */
+declare global {
+  const dialogPolyfill: DialogPolyfillType;
+}
+
+/**
+ * If used as ESM, then we export a const of type "DialogPolyfillType" as the default.
+ */
+declare const dialogPolyfill: DialogPolyfillType
+export default dialogPolyfill;
diff --git a/node_modules/dialog-polyfill/index.js b/node_modules/dialog-polyfill/index.js
index e4db8da..3643014 100644
--- a/node_modules/dialog-polyfill/index.js
+++ b/node_modules/dialog-polyfill/index.js
@@ -12,6 +12,22 @@
 }
 
 /**
+ * Dispatches the passed event to both an "on<type>" handler as well as via the
+ * normal dispatch operation. Does not bubble.
+ *
+ * @param {!EventTarget} target
+ * @param {!Event} event
+ * @return {boolean}
+ */
+function safeDispatchEvent(target, event) {
+  var check = 'on' + event.type.toLowerCase();
+  if (typeof target[check] === 'function') {
+    target[check](event);
+  }
+  return target.dispatchEvent(event);
+}
+
+/**
  * @param {Element} el to check for stacking context
  * @return {boolean} whether this el or its parents creates a stacking context
  */
@@ -21,7 +37,7 @@
     var invalid = function(k, ok) {
       return !(s[k] === undefined || s[k] === ok);
     };
-    
+
     if (s.opacity < 1 ||
         invalid('zIndex', 'auto') ||
         invalid('transform', 'none') ||
@@ -62,6 +78,11 @@
  * @param {Element} el to blur
  */
 function safeBlur(el) {
+  // Find the actual focused element when the active element is inside a shadow root
+  while (el && el.shadowRoot && el.shadowRoot.activeElement) {
+    el = el.shadowRoot.activeElement;
+  }
+
   if (el && el.blur && el !== document.body) {
     el.blur();
   }
@@ -93,6 +114,110 @@
 }
 
 /**
+ * @param {!DocumentFragment|!Element} hostElement
+ * @return {?Element}
+ */
+function findFocusableElementWithin(hostElement) {
+  // Note that this is 'any focusable area'. This list is probably not exhaustive, but the
+  // alternative involves stepping through and trying to focus everything.
+  var opts = ['button', 'input', 'keygen', 'select', 'textarea'];
+  var query = opts.map(function(el) {
+    return el + ':not([disabled])';
+  });
+  // TODO(samthor): tabindex values that are not numeric are not focusable.
+  query.push('[tabindex]:not([disabled]):not([tabindex=""])');  // tabindex != "", not disabled
+  var target = hostElement.querySelector(query.join(', '));
+
+  if (!target && 'attachShadow' in Element.prototype) {
+    // If we haven't found a focusable target, see if the host element contains an element
+    // which has a shadowRoot.
+    // Recursively search for the first focusable item in shadow roots.
+    var elems = hostElement.querySelectorAll('*');
+    for (var i = 0; i < elems.length; i++) {
+      if (elems[i].tagName && elems[i].shadowRoot) {
+        target = findFocusableElementWithin(elems[i].shadowRoot);
+        if (target) {
+          break;
+        }
+      }
+    }
+  }
+  return target;
+}
+
+/**
+ * Determines if an element is attached to the DOM.
+ * @param {Element} element to check
+ * @return {Boolean} whether the element is in DOM
+ */
+function isConnected(element) {
+  return element.isConnected || document.body.contains(element);
+}
+
+/**
+ * @param {!Event} event
+ */
+function findFormSubmitter(event) {
+  if (event.submitter) {
+    return event.submitter;
+  }
+
+  var form = event.target;
+  if (!(form instanceof HTMLFormElement)) {
+    return null;
+  }
+
+  var submitter = dialogPolyfill.formSubmitter;
+  if (!submitter) {
+    var target = event.target;
+    var root = ('getRootNode' in target && target.getRootNode() || document);
+    submitter = root.activeElement;
+  }
+
+  if (submitter.form !== form) {
+    return null;
+  }
+  return submitter;
+}
+
+/**
+ * @param {!Event} event
+ */
+function maybeHandleSubmit(event) {
+  if (event.defaultPrevented) {
+    return;
+  }
+  var form = /** @type {!HTMLFormElement} */ (event.target);
+
+  // We'd have a value if we clicked on an imagemap.
+  var value = dialogPolyfill.useValue;
+  var submitter = findFormSubmitter(event);
+  if (value === null && submitter) {
+    value = submitter.value;
+  }
+
+  // There should always be a dialog as this handler is added specifically on them, but check just
+  // in case.
+  var dialog = findNearestDialog(form);
+  if (!dialog) {
+    return;
+  }
+
+  // Prefer formmethod on the button.
+  var formmethod = submitter && submitter.getAttribute('formmethod') || form.getAttribute('method');
+  if (formmethod !== 'dialog') {
+    return;
+  }
+  event.preventDefault();
+
+  if (submitter) {
+    dialog.close(value);
+  } else {
+    dialog.close();
+  }
+}
+
+/**
  * @param {!HTMLDialogElement} dialog to upgrade
  * @constructor
  */
@@ -110,6 +235,8 @@
   dialog.showModal = this.showModal.bind(this);
   dialog.close = this.close.bind(this);
 
+  dialog.addEventListener('submit', maybeHandleSubmit, false);
+
   if (!('returnValue' in dialog)) {
     dialog.returnValue = '';
   }
@@ -148,10 +275,12 @@
 
   this.backdrop_ = document.createElement('div');
   this.backdrop_.className = 'backdrop';
-  this.backdrop_.addEventListener('click', this.backdropClick_.bind(this));
+  this.backdrop_.addEventListener('mouseup'  , this.backdropMouseEvent_.bind(this));
+  this.backdrop_.addEventListener('mousedown', this.backdropMouseEvent_.bind(this));
+  this.backdrop_.addEventListener('click'    , this.backdropMouseEvent_.bind(this));
 }
 
-dialogPolyfillInfo.prototype = {
+dialogPolyfillInfo.prototype = /** @type {HTMLDialogElement.prototype} */ ({
 
   get dialog() {
     return this.dialog_;
@@ -163,7 +292,7 @@
    * longer open or is no longer part of the DOM.
    */
   maybeHideModal: function() {
-    if (this.dialog_.hasAttribute('open') && document.body.contains(this.dialog_)) { return; }
+    if (this.dialog_.hasAttribute('open') && isConnected(this.dialog_)) { return; }
     this.downgradeModal();
   },
 
@@ -201,12 +330,12 @@
   },
 
   /**
-   * Handles clicks on the fake .backdrop element, redirecting them as if
+   * Handles mouse events ('mouseup', 'mousedown', 'click') on the fake .backdrop element, redirecting them as if
    * they were on the dialog itself.
    *
    * @param {!Event} e to redirect
    */
-  backdropClick_: function(e) {
+  backdropMouseEvent_: function(e) {
     if (!this.dialog_.hasAttribute('tabindex')) {
       // Clicking on the backdrop should move the implicit cursor, even if dialog cannot be
       // focused. Create a fake thing to focus on. If the backdrop was _before_ the dialog, this
@@ -239,15 +368,7 @@
       target = this.dialog_;
     }
     if (!target) {
-      // Note that this is 'any focusable area'. This list is probably not exhaustive, but the
-      // alternative involves stepping through and trying to focus everything.
-      var opts = ['button', 'input', 'keygen', 'select', 'textarea'];
-      var query = opts.map(function(el) {
-        return el + ':not([disabled])';
-      });
-      // TODO(samthor): tabindex values that are not numeric are not focusable.
-      query.push('[tabindex]:not([disabled]):not([tabindex=""])');  // tabindex != "", not disabled
-      target = this.dialog_.querySelector(query.join(', '));
+      target = findFocusableElementWithin(this.dialog_);
     }
     safeBlur(document.activeElement);
     target && target.focus();
@@ -284,7 +405,7 @@
     if (this.dialog_.hasAttribute('open')) {
       throw new Error('Failed to execute \'showModal\' on dialog: The element is already open, and therefore cannot be opened modally.');
     }
-    if (!document.body.contains(this.dialog_)) {
+    if (!isConnected(this.dialog_)) {
       throw new Error('Failed to execute \'showModal\' on dialog: The element is not in a Document.');
     }
     if (!dialogPolyfill.dm.pushDialog(this)) {
@@ -337,10 +458,10 @@
       bubbles: false,
       cancelable: false
     });
-    this.dialog_.dispatchEvent(closeEvent);
+    safeDispatchEvent(this.dialog_, closeEvent);
   }
 
-};
+});
 
 var dialogPolyfill = {};
 
@@ -527,24 +648,26 @@
 };
 
 dialogPolyfill.DialogManager.prototype.handleFocus_ = function(event) {
-  if (this.containedByTopDialog_(event.target)) { return; }
+  var target = event.composedPath ? event.composedPath()[0] : event.target;
+
+  if (this.containedByTopDialog_(target)) { return; }
 
   if (document.activeElement === document.documentElement) { return; }
 
   event.preventDefault();
   event.stopPropagation();
-  safeBlur(/** @type {Element} */ (event.target));
+  safeBlur(/** @type {Element} */ (target));
 
   if (this.forwardTab_ === undefined) { return; }  // move focus only from a tab key
 
   var dpi = this.pendingDialogStack[0];
   var dialog = dpi.dialog;
-  var position = dialog.compareDocumentPosition(event.target);
+  var position = dialog.compareDocumentPosition(target);
   if (position & Node.DOCUMENT_POSITION_PRECEDING) {
     if (this.forwardTab_) {
       // forward
       dpi.focus_();
-    } else if (event.target !== document.documentElement) {
+    } else if (target !== document.documentElement) {
       // backwards if we're not already focused on <html>
       document.documentElement.focus();
     }
@@ -565,7 +688,7 @@
       cancelable: true
     });
     var dpi = this.pendingDialogStack[0];
-    if (dpi && dpi.dialog.dispatchEvent(cancelEvent)) {
+    if (dpi && safeDispatchEvent(dpi.dialog, cancelEvent)) {
       dpi.dialog.close();
     }
   } else if (event.keyCode === 9) {
@@ -652,6 +775,7 @@
         return realGet.call(this);
       };
       var realSet = methodDescriptor.set;
+      /** @this {HTMLElement} */
       methodDescriptor.set = function(v) {
         if (typeof v === 'string' && v.toLowerCase() === 'dialog') {
           return this.setAttribute('method', v);
@@ -673,6 +797,10 @@
     if (ev.defaultPrevented) { return; }  // e.g. a submit which prevents default submission
 
     var target = /** @type {Element} */ (ev.target);
+    if ('composedPath' in ev) {
+      var path = ev.composedPath();
+      target = path.shift() || target;
+    }
     if (!target || !isFormMethodDialog(target.form)) { return; }
 
     var valid = (target.type === 'submit' && ['button', 'input'].indexOf(target.localName) > -1);
@@ -690,6 +818,24 @@
   }, false);
 
   /**
+   * Global 'submit' handler. This handles submits of `method="dialog"` which are invalid, i.e.,
+   * outside a dialog. They get prevented.
+   */
+  document.addEventListener('submit', function(ev) {
+    var form = ev.target;
+    var dialog = findNearestDialog(form);
+    if (dialog) {
+      return;  // ignore, handle there
+    }
+
+    var submitter = findFormSubmitter(ev);
+    var formmethod = submitter && submitter.getAttribute('formmethod') || form.getAttribute('method');
+    if (formmethod === 'dialog') {
+      ev.preventDefault();
+    }
+  });
+
+  /**
    * Replace the native HTMLFormElement.submit() method, as it won't fire the
    * submit event and give us a chance to respond.
    */
@@ -702,30 +848,6 @@
     dialog && dialog.close();
   };
   HTMLFormElement.prototype.submit = replacementFormSubmit;
-
-  /**
-   * Global form 'dialog' method handler. Closes a dialog correctly on submit
-   * and possibly sets its return value.
-   */
-  document.addEventListener('submit', function(ev) {
-    var form = /** @type {HTMLFormElement} */ (ev.target);
-    if (!isFormMethodDialog(form)) { return; }
-    ev.preventDefault();
-
-    var dialog = findNearestDialog(form);
-    if (!dialog) { return; }
-
-    // Forms can only be submitted via .submit() or a click (?), but anyway: sanity-check that
-    // the submitter is correct before using its value as .returnValue.
-    var s = dialogPolyfill.formSubmitter;
-    if (s && s.form === form) {
-      dialog.close(dialogPolyfill.useValue || s.value);
-    } else {
-      dialog.close();
-    }
-    dialogPolyfill.formSubmitter = null;
-
-  }, true);
 }
 
 
diff --git a/node_modules/dialog-polyfill/package-lock.json b/node_modules/dialog-polyfill/package-lock.json
deleted file mode 100644
index fcc690e..0000000
--- a/node_modules/dialog-polyfill/package-lock.json
+++ /dev/null
@@ -1,697 +0,0 @@
-{
-  "name": "dialog-polyfill",
-  "version": "0.4.10",
-  "lockfileVersion": 1,
-  "requires": true,
-  "dependencies": {
-    "@types/estree": {
-      "version": "0.0.39",
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-      "dev": true
-    },
-    "@types/node": {
-      "version": "11.9.5",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-11.9.5.tgz",
-      "integrity": "sha512-vVjM0SVzgaOUpflq4GYBvCpozes8OgIIS5gVXVka+OfK3hvnkC1i93U8WiY2OtNE4XUWyyy/86Kf6e0IHTQw1Q==",
-      "dev": true
-    },
-    "acorn": {
-      "version": "6.1.0",
-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.1.0.tgz",
-      "integrity": "sha512-MW/FjM+IvU9CgBzjO3UIPCE2pyEwUsoFl+VGdczOPEdxfGFjuKny/gN54mOuX7Qxmb9Rg9MCn2oKiSUeW+pjrw==",
-      "dev": true
-    },
-    "ansi-styles": {
-      "version": "3.2.1",
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-      "dev": true,
-      "requires": {
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-      }
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-      "integrity": "sha1-9HgZSczkAmlxJ0MOo7PFR29IF2c=",
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-        "array-map": "~0.0.0",
-        "array-reduce": "~0.0.0",
-        "jsonify": "~0.0.0"
-      }
-    },
-    "spdx-correct": {
-      "version": "3.1.0",
-      "resolved": "https://registry.npmjs.org/spdx-correct/-/spdx-correct-3.1.0.tgz",
-      "integrity": "sha512-lr2EZCctC2BNR7j7WzJ2FpDznxky1sjfxvvYEyzxNyb6lZXHODmEoJeFu4JupYlkfha1KZpJyoqiJ7pgA1qq8Q==",
-      "dev": true,
-      "requires": {
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-        "spdx-license-ids": "^3.0.0"
-      }
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-    "spdx-exceptions": {
-      "version": "2.2.0",
-      "resolved": "https://registry.npmjs.org/spdx-exceptions/-/spdx-exceptions-2.2.0.tgz",
-      "integrity": "sha512-2XQACfElKi9SlVb1CYadKDXvoajPgBVPn/gOQLrTvHdElaVhr7ZEbqJaRnJLVNeaI4cMEAgVCeBMKF6MWRDCRA==",
-      "dev": true
-    },
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-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/spdx-expression-parse/-/spdx-expression-parse-3.0.0.tgz",
-      "integrity": "sha512-Yg6D3XpRD4kkOmTpdgbUiEJFKghJH03fiC1OPll5h/0sO6neh2jqRDVHOQ4o/LMea0tgCkbMgea5ip/e+MkWyg==",
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-      "requires": {
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-        "spdx-license-ids": "^3.0.0"
-      }
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-      "version": "3.0.3",
-      "resolved": "https://registry.npmjs.org/spdx-license-ids/-/spdx-license-ids-3.0.3.tgz",
-      "integrity": "sha512-uBIcIl3Ih6Phe3XHK1NqboJLdGfwr1UN3k6wSD1dZpmPsIkb8AGNbZYJ1fOBk834+Gxy8rpfDxrS6XLEMZMY2g==",
-      "dev": true
-    },
-    "string.prototype.padend": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/string.prototype.padend/-/string.prototype.padend-3.0.0.tgz",
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-      "requires": {
-        "define-properties": "^1.1.2",
-        "es-abstract": "^1.4.3",
-        "function-bind": "^1.0.2"
-      }
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-      "version": "3.0.0",
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-      "dev": true
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-      "integrity": "sha512-HxJdYWq1MTIQbJ3nw0cqssHoTNU267KlrDuGZ1WYlxDStUtKUhOaJmh112/TZmHxxUfuJqPXSOm7tDyas0OSIQ==",
-      "dev": true,
-      "requires": {
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-      "dev": true
-    }
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-}
diff --git a/node_modules/dialog-polyfill/package.json b/node_modules/dialog-polyfill/package.json
index 6b3bcd0..4ecce16 100644
--- a/node_modules/dialog-polyfill/package.json
+++ b/node_modules/dialog-polyfill/package.json
@@ -1,52 +1,22 @@
 {
-  "_from": "dialog-polyfill",
-  "_id": "dialog-polyfill@0.5.0",
-  "_inBundle": false,
-  "_integrity": "sha512-fOj68T8KB6UIsDFmK7zYbmORJMLYkRmtsLM1W6wbCVUWu4Hdcud5bqbvuueTxO84JXtK9HcpCHV9vNwlWUdCIw==",
-  "_location": "/dialog-polyfill",
-  "_phantomChildren": {},
-  "_requested": {
-    "type": "tag",
-    "registry": true,
-    "raw": "dialog-polyfill",
-    "name": "dialog-polyfill",
-    "escapedName": "dialog-polyfill",
-    "rawSpec": "",
-    "saveSpec": null,
-    "fetchSpec": "latest"
-  },
-  "_requiredBy": [
-    "#USER",
-    "/"
-  ],
-  "_resolved": "https://registry.npmjs.org/dialog-polyfill/-/dialog-polyfill-0.5.0.tgz",
-  "_shasum": "bf67bc67abaf538e44fff80f2f71ff132befadd7",
-  "_spec": "dialog-polyfill",
-  "_where": "/var/www/html/hores",
-  "author": {
-    "name": "The Chromium Authors"
-  },
-  "bugs": {
-    "url": "https://github.com/GoogleChrome/dialog-polyfill/issues"
-  },
-  "bundleDependencies": false,
-  "deprecated": false,
+  "name": "dialog-polyfill",
+  "version": "0.5.4",
   "description": "Polyfill for the dialog element",
+  "main": "dist/dialog-polyfill.js",
+  "module": "dist/dialog-polyfill.esm.js",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/GoogleChrome/dialog-polyfill.git"
+  },
+  "author": "The Chromium Authors",
+  "license": "BSD",
+  "homepage": "https://github.com/GoogleChrome/dialog-polyfill",
   "devDependencies": {
     "chai": "^4.2.0",
     "mocha": "^6.0.2",
     "npm-run-all": "^4.1.5",
     "rollup": "^1.3.0"
   },
-  "homepage": "https://github.com/GoogleChrome/dialog-polyfill",
-  "license": "BSD",
-  "main": "dist/dialog-polyfill.js",
-  "module": "dist/dialog-polyfill.esm.js",
-  "name": "dialog-polyfill",
-  "repository": {
-    "type": "git",
-    "url": "git+https://github.com/GoogleChrome/dialog-polyfill.git"
-  },
   "scripts": {
     "build": "npm-run-all -p build:*",
     "build:css": "cp dialog-polyfill.css dist/dialog-polyfill.css",
@@ -54,6 +24,5 @@
     "build:umd": "rollup index.js --file dist/dialog-polyfill.js --format umd --name dialogPolyfill",
     "prepublishOnly": "npm run build",
     "test": "open test.html"
-  },
-  "version": "0.5.0"
+  }
 }
diff --git a/node_modules/dialog-polyfill/suite.js b/node_modules/dialog-polyfill/suite.js
deleted file mode 100644
index 943f17d..0000000
--- a/node_modules/dialog-polyfill/suite.js
+++ /dev/null
@@ -1,790 +0,0 @@
-/*
- * Copyright 2015 Google Inc. All rights reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not
- * use this file except in compliance with the License. You may obtain a copy of
- * the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
- * License for the specific language governing permissions and limitations under
- * the License.
- */
-
-
-void function() {
-
-  /**
-   * Asserts that the displayed dialog is in the center of the screen.
-   *
-   * @param {HTMLDialogElement?} opt_dialog to check, or test default
-   */
-  function checkDialogCenter(opt_dialog) {
-    var d = opt_dialog || dialog;
-    var expectedTop = (window.innerHeight - d.offsetHeight) / 2;
-    var expectedLeft = (window.innerWidth - d.offsetWidth) / 2;
-    var rect = d.getBoundingClientRect();
-    assert.closeTo(rect.top, expectedTop, 1, 'top should be nearby');
-    assert.closeTo(rect.left, expectedLeft, 1, 'left should be nearby');
-  }
-
-  /**
-   * Creates a fake KeyboardEvent.
-   *
-   * @param {number} keyCode to press
-   * @param {string?} opt_type to use, default keydown
-   * @return {!Event} event
-   */
-  function createKeyboardEvent(keyCode, opt_type) {
-    var ev = document.createEvent('Events');
-    ev.initEvent(opt_type || 'keydown', true, true);
-    ev.keyCode = keyCode;
-    ev.which = keyCode;
-    return ev;
-  }
-
-  /**
-   * Cleans up any passed DOM elements.
-   *
-   * @param {!Element} el to clean up
-   * @return {!Element} the same element, for chaining
-   */
-  var cleanup = (function() {
-    var e = [];
-    teardown(function() {
-      e.forEach(function(el) {
-        try {
-          el.close();  // try to close dialogs
-        } catch (e) {}
-        el.parentElement && el.parentElement.removeChild(el);
-      });
-      e = [];
-    });
-
-    return function(el) {
-      e.push(el);
-      return el;
-    };
-  })();
-
-  /**
-   * Creates a dialog for testing that will be cleaned up later.
-   *
-   * @param {string?} opt_content to be used as innerHTML
-   */
-  function createDialog(opt_content) {
-    var dialog = document.createElement('dialog');
-    dialog.innerHTML = opt_content || 'Dialog #' + (cleanup.length);
-    document.body.appendChild(dialog);
-    if (window.location.search == '?force') {
-      dialogPolyfill.forceRegisterDialog(dialog);
-    } else {
-      dialogPolyfill.registerDialog(dialog);
-    }
-    return cleanup(dialog);
-  }
-
-  var dialog;  // global dialog for all tests
-  setup(function() {
-    dialog = createDialog('Default Dialog');
-  });
-
-  suite('basic', function() {
-    test('show and close', function() {
-      assert.isFalse(dialog.hasAttribute('open'));
-      dialog.show();
-      assert.isTrue(dialog.hasAttribute('open'));
-      assert.isTrue(dialog.open);
-
-      var returnValue = 1234;
-      dialog.close(returnValue);
-      assert.isFalse(dialog.hasAttribute('open'));
-      assert.equal(dialog.returnValue, returnValue);
-
-      dialog.show();
-      dialog.close();
-      assert.isFalse(dialog.open);
-      assert.equal(dialog.returnValue, returnValue);
-    });
-    test('open property', function() {
-      assert.isFalse(dialog.hasAttribute('open'));
-      dialog.show();
-      assert.isTrue(dialog.hasAttribute('open'));
-      assert.isTrue(dialog.open);
-
-      dialog.open = false;
-      assert.isFalse(dialog.open);
-      assert.isFalse(dialog.hasAttribute('open'),
-          'open property should clear attribute');
-      assert.throws(dialog.close);
-
-      var overlay = document.querySelector('._dialog_overlay');
-      assert.isNull(overlay);
-    });
-    test('show/showModal interaction', function() {
-      assert.isFalse(dialog.hasAttribute('open'));
-      dialog.show();
-
-      // If the native dialog is being tested, show/showModal are not already
-      // bound, so wrap them in helper methods for throws/doesNotThrow.
-      var show = function() { dialog.show(); };
-      var showModal = function() { dialog.showModal(); };
-
-      assert.doesNotThrow(show);
-      assert.throws(showModal);
-
-      dialog.open = false;
-      assert.doesNotThrow(showModal);
-      assert.doesNotThrow(show);  // show after showModal does nothing
-      assert.throws(showModal);
-      // TODO: check dialog is still modal
-
-      assert.isTrue(dialog.open);
-    });
-    test('setAttribute reflects property', function() {
-      dialog.setAttribute('open', '');
-      assert.isTrue(dialog.open, 'attribute opens dialog');
-    });
-    test('changing open to dummy value is ignored', function() {
-      dialog.showModal();
-
-      dialog.setAttribute('open', 'dummy, ignored');
-      assert.isTrue(dialog.open, 'dialog open with dummy open value');
-
-      var overlay = document.querySelector('._dialog_overlay');
-      assert(overlay, 'dialog is still modal');
-    });
-    test('show/showModal outside document', function() {
-      dialog.open = false;
-      dialog.parentNode.removeChild(dialog);
-
-      assert.throws(function() { dialog.showModal(); });
-
-      assert.doesNotThrow(function() { dialog.show(); });
-      assert.isTrue(dialog.open, 'can open non-modal outside document');
-      assert.isFalse(document.body.contains(dialog));
-    });
-    test('has a11y property', function() {
-      assert.equal(dialog.getAttribute('role'), 'dialog', 'role should be dialog');
-    });
-  });
-
-  suite('DOM', function() {
-    setup(function(done) {
-      // DOM tests wait for modal to settle, so MutationOberver doesn't coalesce attr changes
-      dialog.showModal();
-      window.setTimeout(done, 0);
-    });
-    test('DOM direct removal', function(done) {
-      assert.isTrue(dialog.open);
-      assert.isNotNull(document.querySelector('.backdrop'));
-
-      var parentNode = dialog.parentNode;
-      parentNode.removeChild(dialog);
-
-      // DOMNodeRemoved defers its task a frame (since it occurs before removal, not after). This
-      // doesn't effect MutationObserver, just delays the test a frame.
-      window.setTimeout(function() {
-        assert.isNull(document.querySelector('.backdrop'), 'dialog removal should clear modal');
-
-        assert.isTrue(dialog.open, 'removed dialog should still be open');
-        parentNode.appendChild(dialog);
-
-        assert.isTrue(dialog.open, 're-added dialog should still be open');
-        assert.isNull(document.querySelector('.backdrop'), 're-add dialog should not be modal');
-
-        done();
-      }, 0);
-    });
-    test('DOM removal inside other element', function(done) {
-      var div = cleanup(document.createElement('div'));
-      document.body.appendChild(div);
-      div.appendChild(dialog);
-
-      document.body.removeChild(div);
-
-      window.setTimeout(function() {
-        assert.isNull(document.querySelector('.backdrop'), 'dialog removal should clear modal');
-        assert.isTrue(dialog.open, 'removed dialog should still be open');
-        done();
-      }, 0);
-    });
-    test('DOM instant remove/add', function(done) {
-      var div = cleanup(document.createElement('div'));
-      document.body.appendChild(div);
-      dialog.parentNode.removeChild(dialog);
-      div.appendChild(dialog);
-
-      window.setTimeout(function() {
-        assert.isNull(document.querySelector('.backdrop'), 'backdrop should disappear');
-        assert.isTrue(dialog.open);
-        done();
-      }, 0);
-    });
-  });
-
-  suite('position', function() {
-    test('non-modal is not centered', function() {
-      var el = cleanup(document.createElement('div'));
-      dialog.parentNode.insertBefore(el, dialog);
-      var testRect = el.getBoundingClientRect();
-
-      dialog.show();
-      var rect = dialog.getBoundingClientRect();
-
-      assert.equal(rect.top, testRect.top, 'dialog should not be centered');
-    });
-    test('default modal centering', function() {
-      dialog.showModal();
-      checkDialogCenter();
-      assert.ok(dialog.style.top, 'expected top to be set');
-      dialog.close();
-      assert.notOk(dialog.style.top, 'expected top to be cleared');
-    });
-    test('modal respects static position', function() {
-      dialog.style.top = '10px';
-      dialog.showModal();
-
-      var rect = dialog.getBoundingClientRect();
-      assert.equal(rect.top, 10);
-    });
-    test('modal recentering', function() {
-      var pX = document.body.scrollLeft;
-      var pY = document.body.scrollTop;
-      var big = cleanup(document.createElement('div'));
-      big.style.height = '200vh';  // 2x view height
-      document.body.appendChild(big);
-
-      try {
-        var scrollValue = 200;  // don't use incredibly large values
-        dialog.showModal();
-        dialog.close();
-
-        window.scrollTo(0, scrollValue);
-        dialog.showModal();
-        checkDialogCenter();  // must be centered, even after scroll
-        var rectAtScroll = dialog.getBoundingClientRect();
-
-        // after scroll, we aren't recentered, check offset
-        window.scrollTo(0, 0);
-        var rect = dialog.getBoundingClientRect();
-        assert.closeTo(rectAtScroll.top + scrollValue, rect.top, 1);
-      } finally {
-        window.scrollTo(pX, pY);
-      }
-    });
-    test('clamped to top of page', function() {
-      var big = cleanup(document.createElement('div'));
-      big.style.height = '200vh';  // 2x view height
-      document.body.appendChild(big);
-      document.documentElement.scrollTop = document.documentElement.scrollHeight / 2;
-
-      dialog.style.height = document.documentElement.scrollHeight + 200 + 'px';
-      dialog.showModal();
-
-      var visibleRect = dialog.getBoundingClientRect();
-      assert.equal(visibleRect.top, 0, 'large dialog should be visible at top of page');
-
-      var style = window.getComputedStyle(dialog);
-      assert.equal(style.top, document.documentElement.scrollTop + 'px',
-          'large dialog should be absolutely positioned at scroll top');
-    });
-  });
-
-  suite('backdrop', function() {
-    test('backdrop div on modal', function() {
-      dialog.showModal();
-      var foundBackdrop = document.querySelector('.backdrop');
-      assert.isNotNull(foundBackdrop);
-
-      var sibling = dialog.nextElementSibling;
-      assert.strictEqual(foundBackdrop, sibling);
-    });
-    test('no backdrop on non-modal', function() {
-      dialog.show();
-      assert.isNull(document.querySelector('.backdrop'));
-      dialog.close();
-    });
-    test('backdrop click appears as dialog', function() {
-      dialog.showModal();
-      var backdrop = dialog.nextElementSibling;
-
-      var clickFired = 0;
-      var helper = function(ev) {
-        assert.equal(ev.target, dialog);
-        ++clickFired;
-      };
-
-      dialog.addEventListener('click', helper)
-      backdrop.click();
-      assert.equal(clickFired, 1);
-    });
-    test('backdrop click focuses dialog', function() {
-      dialog.showModal();
-      dialog.tabIndex = 0;
-
-      var input = document.createElement('input');
-      input.type = 'text';
-      dialog.appendChild(input);
-
-      // TODO: It would be nice to check `input` instead here, but there's no more reliable ways
-      // to emulate a browser tab event (Firefox, Chrome etc have made it a security violation).
-
-      var backdrop = dialog.nextElementSibling;
-      backdrop.click();
-      assert.equal(document.activeElement, dialog);
-    });
-  });
-
-  suite('form focus', function() {
-    test('non-modal inside modal is focusable', function() {
-      var sub = createDialog();
-      dialog.appendChild(sub);
-
-      var input = document.createElement('input');
-      input.type = 'text';
-      sub.appendChild(input);
-
-      dialog.showModal();
-      sub.show();
-
-      input.focus();
-      assert.equal(input, document.activeElement);
-    });
-    test('clear focus when nothing focusable in modal', function() {
-      var input = cleanup(document.createElement('input'));
-      input.type = 'text';
-      document.body.appendChild(input);
-      input.focus();
-
-      var previous = document.activeElement;
-      dialog.showModal();
-      assert.notEqual(previous, document.activeElement);
-    });
-    test('default focus on modal', function() {
-      var input = cleanup(document.createElement('input'));
-      input.type = 'text';
-      dialog.appendChild(input);
-
-      var anotherInput = cleanup(document.createElement('input'));
-      anotherInput.type = 'text';
-      dialog.appendChild(anotherInput);
-
-      dialog.showModal();
-      assert.equal(document.activeElement, input);
-    });
-    test('default focus on non-modal', function() {
-      var div = cleanup(document.createElement('div'));
-      div.tabIndex = 4;
-      dialog.appendChild(div);
-
-      dialog.show();
-      assert.equal(document.activeElement, div);
-    });
-    test('autofocus element chosen', function() {
-      var input = cleanup(document.createElement('input'));
-      input.type = 'text';
-      dialog.appendChild(input);
-
-      var inputAF = cleanup(document.createElement('input'));
-      inputAF.type = 'text';
-      inputAF.autofocus = true;
-      dialog.appendChild(inputAF);
-
-      dialog.showModal();
-      assert.equal(document.activeElement, inputAF);
-    });
-    test('child modal dialog', function() {
-      dialog.showModal();
-
-      var input = cleanup(document.createElement('input'));
-      input.type = 'text';
-      dialog.appendChild(input);
-      input.focus();
-      assert.equal(document.activeElement, input);
-
-      // NOTE: This is a single sub-test, but all the above tests could be run
-      // again in a sub-context (i.e., dialog within dialog).
-      var child = createDialog();
-      child.showModal();
-      assert.notEqual(document.activeElement, input,
-          'additional modal dialog should clear parent focus');
-
-      child.close();
-      assert.notEqual(document.activeElement, input,
-          'parent focus should not be restored');
-    });
-    test('don\'t scroll anything into focus', function() {
-      // https://github.com/GoogleChrome/dialog-polyfill/issues/119
-
-      var div = cleanup(document.createElement('div'));
-      document.body.appendChild(div);
-
-      var inner = document.createElement('div');
-      inner.style.height = '10000px';
-      div.appendChild(inner);
-
-      div.appendChild(dialog);
-
-      var input = cleanup(document.createElement('input'));
-      input.type = 'text';
-      dialog.appendChild(input);
-
-      var prev = document.documentElement.scrollTop;
-      dialog.showModal();
-      assert.equal(document.documentElement.scrollTop, prev);
-    });
-  });
-
-  suite('top layer / inert', function() {
-    test('background focus allowed on non-modal', function() {
-      var input = cleanup(document.createElement('input'));
-      input.type = 'text';
-      document.body.appendChild(input);
-      input.focus();
-
-      dialog.show();
-      assert.notEqual(document.activeElement, input,
-        'non-modal dialog should clear focus, even with no dialog content');
-
-      document.body.focus();
-      input.focus();
-      assert.equal(document.activeElement, input,
-          'non-modal should allow background focus');
-    });
-    test('modal disallows background focus', function() {
-      var input = cleanup(document.createElement('input'));
-      input.type = 'text';
-      document.body.appendChild(input);
-
-      dialog.showModal();
-      input.focus();
-
-      if (!document.hasFocus()) {
-        // Browsers won't trigger a focus event if they're not in the
-        // foreground, so we can't intercept it. However, they'll fire one when
-        // restored, before a user can get to any incorrectly focused element.
-        console.warn('background focus test requires document focus');
-        document.documentElement.focus();
-      }
-      assert.notEqual(document.activeElement, input,
-          'modal should disallow background focus');
-    });
-    test('overlay is a sibling of topmost dialog', function() {
-      var stacking = cleanup(document.createElement('div'));
-      stacking.style.opacity = 0.8;  // creates stacking context
-      document.body.appendChild(stacking);
-      stacking.appendChild(dialog);
-      dialog.showModal();
-
-      var overlay = document.querySelector('._dialog_overlay');
-      assert.isNotNull(overlay);
-      assert.equal(overlay.parentNode, dialog.parentNode);
-    });
-    test('overlay is between topmost and remaining dialogs', function() {
-      dialog.showModal();
-
-      var other = cleanup(createDialog());
-      document.body.appendChild(other);
-      other.showModal();
-
-      var overlay = document.querySelector('._dialog_overlay');
-      assert.isNotNull(overlay);
-      assert.equal(overlay.parentNode, other.parentNode);
-
-      assert.isAbove(+other.style.zIndex, +overlay.style.zIndex, 'top-most dialog above overlay');
-      assert.isAbove(+overlay.style.zIndex, +dialog.style.zIndex, 'overlay above other dialogs');
-    });
-  });
-
-  suite('events', function() {
-    test('close event', function() {
-      var closeFired = 0;
-      dialog.addEventListener('close', function() {
-        ++closeFired;
-      });
-
-      dialog.show();
-      assert.equal(closeFired, 0);
-
-      dialog.close();
-      assert.equal(closeFired, 1);
-
-      assert.throws(dialog.close);  // can't close already closed dialog
-      assert.equal(closeFired, 1);
-
-      dialog.showModal();
-      dialog.close();
-      assert.equal(closeFired, 2);
-    });
-    test('cancel event', function() {
-      dialog.showModal();
-      dialog.dispatchEvent(createKeyboardEvent(27));
-      assert.isFalse(dialog.open, 'esc should close modal');
-
-      var cancelFired = 0;
-      dialog.addEventListener('cancel', function() {
-        ++cancelFired;
-      });
-      dialog.showModal();
-      dialog.dispatchEvent(createKeyboardEvent(27));
-      assert.equal(cancelFired, 1, 'expected cancel to be fired');
-      assert.isFalse(dialog.open), 'esc should close modal again';
-
-      // Sanity-check that non-modals aren't effected.
-      dialog.show();
-      dialog.dispatchEvent(createKeyboardEvent(27));
-      assert.isTrue(dialog.open, 'esc should only close modal dialog');
-      assert.equal(cancelFired, 1);
-    });
-    test('overlay click is prevented', function() {
-      dialog.showModal();
-
-      var overlay = document.querySelector('._dialog_overlay');
-      assert.isNotNull(overlay);
-
-      var helper = function(ev) {
-        throw Error('body should not be clicked');
-      };
-      try {
-        document.body.addEventListener('click', helper);
-        overlay.click();
-      } finally {
-        document.body.removeEventListener('click', helper);
-      }
-    });
-  });
-
-  suite('form', function() {
-    test('method attribute is translated to property', function() {
-      var form = document.createElement('form');
-      form.method = 'dialog';
-      assert.equal(form.method, 'dialog');
-
-      form.method = 'PoSt';
-      assert.equal(form.method, 'post');
-      assert.equal(form.getAttribute('method'), 'PoSt');
-    });
-    test('dialog method input', function() {
-      var value = 'ExpectedValue' + Math.random();
-
-      var form = document.createElement('form');
-      try {
-        form.method = 'dialog';
-      } catch (e) {
-        // Setting the method directly throws an exception in <=IE9.
-        form.setAttribute('method', 'dialog');
-      }
-      dialog.appendChild(form);
-
-      var input = document.createElement('input');
-      input.type = 'submit';
-      input.value = value;
-      form.appendChild(input);
-
-      var closeCount = 0;
-      dialog.addEventListener('close', function() {
-        ++closeCount;
-      });
-
-      dialog.show();
-      input.focus();  // emulate user focus action
-      input.click();
-
-      assert.isFalse(dialog.open);
-      assert.equal(dialog.returnValue, value);
-      assert.equal(closeCount, 1);
-    });
-    test('dialog with button preventDefault does not trigger submit', function() {
-      var form = document.createElement('form');
-      form.setAttribute('method', 'dialog');
-      dialog.appendChild(form);
-
-      var button = document.createElement('button');
-      button.value = 'does not matter';
-      form.appendChild(button);
-      button.addEventListener('click', function(ev) {
-        ev.preventDefault();
-      });
-
-      dialog.showModal();
-      button.click();
-
-      assert.isTrue(dialog.open, 'dialog should remain open');
-      assert.equal(dialog.returnValue, '');
-    });
-    test('dialog programmatic submit does not change returnValue', function() {
-      var form = document.createElement('form');
-      form.setAttribute('method', 'dialog');
-
-      dialog.returnValue = 'manually set';  // set before appending
-      dialog.appendChild(form);
-
-      dialog.showModal();
-      form.submit();
-      assert.isFalse(dialog.open);
-
-      assert.equal(dialog.returnValue, 'manually set', 'returnValue should not change');
-    });
-    test('dialog method button', function() {
-      var value = 'ExpectedValue' + Math.random();
-
-      var form = document.createElement('form');
-      form.setAttribute('method', 'dialog');
-      dialog.appendChild(form);
-
-      var button = document.createElement('button');
-      button.value = value;
-      form.appendChild(button);
-
-      dialog.showModal();
-      button.focus();  // emulate user focus action
-      button.click();
-
-      assert.isFalse(dialog.open);
-      assert.equal(dialog.returnValue, value);
-
-      // Clear button value, confirm textContent is not used as value.
-      button.value = 'blah blah';
-      button.removeAttribute('value');
-      button.textContent = value;
-      dialog.show();
-      button.focus();  // emulate user focus action
-      button.click();
-
-      assert.equal(dialog.returnValue, button.value,
-          'don\'t take button textContent as value');
-    });
-    test('boring form inside dialog', function() {
-      var form = document.createElement('form');
-      dialog.appendChild(form);  // don't specify method
-      form.addEventListener('submit', function(ev) {
-        ev.preventDefault();
-      });
-
-      var button = document.createElement('button');
-      button.value = 'Moot';
-      form.appendChild(button);
-
-      dialog.showModal();
-      button.focus();  // emulate user focus action
-      button.click();
-
-      assert.isTrue(dialog.open, 'non-dialog form should not close dialog')
-      assert(!dialog.returnValue);
-    });
-    test('type="image" submitter', function() {
-      var form = document.createElement('form');
-      form.setAttribute('method', 'dialog');
-      dialog.appendChild(form);
-      dialog.show();
-
-      var image = document.createElement('input');
-      image.type = 'image';
-      image.src = 'data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==';
-      image.setAttribute('value', 'image should not accept value');
-      form.appendChild(image);
-      image.click();
-
-      assert.notEqual(image.getAttribute('value'), dialog.returnValue);
-      assert.equal(dialog.returnValue, '0,0');
-    });
-    test('form submitter across dialogs', function() {
-      var form1 = document.createElement('form');
-      form1.setAttribute('method', 'dialog');
-      dialog.appendChild(form1);
-
-      var button1 = document.createElement('button');
-      button1.value = 'from form1: first value';
-      form1.appendChild(button1);
-      dialog.showModal();
-
-      var dialog2 = createDialog();
-      dialog2.returnValue = 'dialog2 default close value';
-      var form2 = document.createElement('form');
-      form2.setAttribute('method', 'dialog');
-      dialog2.appendChild(form2);
-      dialog2.showModal();
-
-      button1.click();
-      assert.isFalse(dialog.open);
-
-      // nb. this never fires 'submit' so the .returnValue can't be wrong: is there another way
-      // to submit a form that doesn't involve a click (enter implicitly 'clicks') or submit?
-      form2.submit();
-      assert.isFalse(dialog2.open);
-
-      assert.equal(dialog2.returnValue, 'dialog2 default close value',
-          'second dialog shouldn\'t reuse formSubmitter');
-    });
-  });
-
-  suite('order', function() {
-    test('non-modal unchanged', function() {
-      var one = createDialog();
-      var two = createDialog();
-
-      one.style.zIndex = 100;
-      two.style.zIndex = 200;
-      one.show();
-      two.show();
-
-      assert.equal(window.getComputedStyle(one).zIndex, 100);
-      assert.equal(window.getComputedStyle(two).zIndex, 200);
-
-      two.close();
-      assert.equal(window.getComputedStyle(two).zIndex, 200);
-    });
-    test('modal stacking order', function() {
-      dialog.showModal();
-
-      // Create incorrectly-named dialogs: front has a lower z-index, and back
-      // has a higher z-index.
-      var front = createDialog();
-      var back = createDialog();
-      front.style.zIndex = 100;
-      back.style.zIndex = 200;
-
-      // Show back first, then front. Thus we expect back to be behind front.
-      back.showModal();
-      front.showModal();
-
-      var zf = +window.getComputedStyle(front).zIndex;
-      var zb = +window.getComputedStyle(back).zIndex;
-      assert.isAbove(zf, zb, 'showModal order dictates z-index');
-
-      var backBackdrop = back.nextElementSibling;
-      var zbb = +window.getComputedStyle(backBackdrop).zIndex;
-      assert.equal(backBackdrop.className, 'backdrop');
-      assert.isBelow(zbb, zb, 'backdrop below dialog');
-
-      var frontBackdrop = front.nextElementSibling;
-      var zfb = +window.getComputedStyle(frontBackdrop).zIndex
-      assert.equal(frontBackdrop.className, 'backdrop');
-      assert.isBelow(zfb, zf,' backdrop below dialog');
-
-      assert.isAbove(zfb, zb, 'front backdrop is above back dialog');
-
-      front.close();
-      assert.notOk(front.style.zIndex, 'modal close should clear zindex');
-    });
-  });
-
-  suite('press tab key', function() {
-    test('tab key', function() {
-      var dialog = createDialog();
-      dialog.showModal();
-
-      document.documentElement.dispatchEvent(createKeyboardEvent(9));
-
-      var ev = document.createEvent('Events');
-      ev.initEvent('focus', true, true);
-      document.documentElement.dispatchEvent(ev);
-
-      dialog.close();
-    });
-  });
-}();
diff --git a/node_modules/dialog-polyfill/test-invalid.html b/node_modules/dialog-polyfill/test-invalid.html
new file mode 100644
index 0000000..70bc984
--- /dev/null
+++ b/node_modules/dialog-polyfill/test-invalid.html
@@ -0,0 +1 @@
+This page should not load.
\ No newline at end of file
diff --git a/node_modules/dialog-polyfill/test.html b/node_modules/dialog-polyfill/test.html
deleted file mode 100644
index 03e9b0b..0000000
--- a/node_modules/dialog-polyfill/test.html
+++ /dev/null
@@ -1,49 +0,0 @@
-<!--
- Copyright 2015 Google Inc. All rights reserved.
-
- Licensed under the Apache License, Version 2.0 (the "License");
- you may not use this file except in compliance with the License.
-     You may obtain a copy of the License at
-
- http://www.apache.org/licenses/LICENSE-2.0
-
- Unless required by applicable law or agreed to in writing, software
- distributed under the License is distributed on an "AS IS" BASIS,
- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- See the License for the specific language governing permissions and
- limitations under the License.
--->
-<!DOCTYPE html>
-<meta charset="UTF-8" />
-<link rel="stylesheet" href="node_modules/mocha/mocha.css" />
-<script src="node_modules/mocha/mocha.js"></script>
-<script src="node_modules/chai/chai.js"></script>
-<link rel="stylesheet" type="text/css" href="dist/dialog-polyfill.css" />
-<script src="dist/dialog-polyfill.js"></script>
-<script>
-
-var assert = chai.assert;
-mocha.setup({ ui: 'tdd' });
-
-(function() {
-  var pageError = null;
-
-  window.addEventListener('error', function(event) {
-    pageError = event.filename + ':' + event.lineno + ' ' + event.message;
-  });
-
-  window.addEventListener('load', function() {
-    if (pageError) {
-      suite('page-script-errors', function() {
-        test('no script errors on page', function() {
-          assert.fail(null, null, pageError);
-        });
-      });
-    }
-    mocha.run();
-  });
-})();
-
-</script>
-<div id="mocha"></div>
-<script src="suite.js"></script>
diff --git a/node_modules/dialog-polyfill/tests/actionbar.html b/node_modules/dialog-polyfill/tests/actionbar.html
deleted file mode 100644
index 3af6c75..0000000
--- a/node_modules/dialog-polyfill/tests/actionbar.html
+++ /dev/null
@@ -1,188 +0,0 @@
-<!DOCTYPE html>
-<html>
-<meta name="viewport" content="initial-scale=1" />
-<meta charset="UTF-8" />
-<head>
-  <script src="../dist/dialog-polyfill.js"></script>
-  <link rel="stylesheet" type="text/css" href="../dist/dialog-polyfill.css">
-  <style>
-
-  dialog.actionbar {
-    position: fixed;
-    border: 0;
-    box-sizing: border-box;
-    width: 100%;
-    bottom: 0;
-    background: #fff;
-    transform: translate(0, 100%);
-    transition: transform 0.25s ease-in-out;
-    margin: 0;
-    padding: 0;
-    box-shadow: 0 0 4px rgba(0, 0, 0, 0.25);
-  }
-  dialog.actionbar.appear {
-    transform: translate(0);
-  }
-
-  dialog.actionbar .holder {
-    display: flex;
-    justify-content: space-around;
-    flex-flow: wrap;
-  }
-  dialog.actionbar .holder button {
-    flex-grow: 1;
-    min-width: 200px;
-    margin: 8px;
-    border: 0;
-    font-family: Roboto, Arial, Sans-Serif;
-    font-size: 23px;
-    line-height: 33px;
-    font-weight: 400;
-    color: #666;
-    border-radius: 2px;
-    background: #ccc;
-    display: block;
-    box-sizing: border-box;
-    border: 2px solid transparent;
-  }
-  dialog.actionbar .holder button:focus {
-    outline: 0;
-    border-color: rgba(0, 0, 0, 0.125);
-  }
-  dialog.actionbar .holder button.cancel {
-    background: #fcc;
-  }
-
-  dialog.actionbar::backdrop {
-    background: rgba(0, 0, 0, 0.25);
-    opacity: 0;
-    transition: opacity 0.25s ease-in-out;
-  }
-  dialog.actionbar + .backdrop {
-    background: rgba(0, 0, 0, 0.25);
-    opacity: 0;
-    transition: opacity 0.25s ease-in-out;
-  }
-  dialog.actionbar.appear::backdrop {
-    opacity: 1;
-  }
-  dialog.actionbar.appear + .backdrop {
-    opacity: 1;
-  }
-
-  </style>
-</head>
-<body>
-
-<p>Builds an action bar from a modal dialog.</p>
-
-<button id="show">Show</button>
-
-<script>
-
-var ActionBar = function() {
-  this.options_ = [];
-  this.cancelButton_ = true;
-  this.dialog_ = null;
-};
-
-ActionBar.prototype.enableCancelButton = function(value) {
-  this.cancelButton_ = vaue;
-};
-
-ActionBar.prototype.addOption = function(name, opt_callback) {
-  this.options_.push({name: name, callback: opt_callback || null});
-};
-
-ActionBar.prototype.show = function(opt_callback) {
-  if (this.dialog_ != null) {
-    throw "Can't show ActionBar, already visible";
-  }
-
-  var dialog = document.createElement('dialog');
-  if (!('showModal' in dialog)) {
-    dialogPolyfill.registerDialog(dialog);
-  }
-  dialog.className = 'actionbar';
-
-  var holder = document.createElement('div');
-  holder.className = 'holder';
-  dialog.appendChild(holder);
-
-  dialog.addEventListener('click', function(ev) {
-    if (ev.target == dialog) {
-      dialog.close();
-    }
-  });
-
-  dialog.addEventListener('close', function() {
-    opt_callback && opt_callback(dialog.returnValue);
-
-    var cloneDialog = dialog.cloneNode(true);
-    if (!('showModal' in cloneDialog)) {
-      dialogPolyfill.registerDialog(cloneDialog);
-    }
-
-    document.body.appendChild(cloneDialog);
-    cloneDialog.showModal();
-    cloneDialog.classList.remove('appear');
-    window.setTimeout(function() {
-      cloneDialog.close();  // TODO: needed until DOM removal is safe
-      cloneDialog.parentNode.removeChild(cloneDialog);
-    }, 250);
-
-    if (dialog.parentNode) {
-      dialog.parentNode.removeChild(dialog);
-    }
-    if (this.dialog_ == dialog) {
-      this.dialog_ = null;
-    }
-  }.bind(this));
-
-  this.options_.forEach(function(option) {
-    var button = document.createElement('button');
-    button.textContent = option.name;
-    button.addEventListener('click', function() {
-      if (option.callback) {
-        window.setTimeout(option.callback, 0);
-      }
-      dialog.close(option.name);
-    });
-    holder.appendChild(button);
-  });
-
-  if (this.cancelButton_) {
-    var cancelButton = document.createElement('button');
-    cancelButton.className = 'cancel';
-    cancelButton.textContent = 'Cancel';
-    cancelButton.addEventListener('click', function() {
-      dialog.close();
-    });
-    holder.appendChild(cancelButton);
-  }
-
-  document.body.appendChild(dialog);
-  dialog.showModal();
-  dialog.classList.add('appear');
-
-  this.dialog_ = dialog;
-};
-
-////// DEMO
-
-show.addEventListener('click', function() {
-  var ab = new ActionBar();
-  ab.addOption('Display');
-  ab.addOption('Options');
-  ab.addOption('Longer Choice');
-  ab.addOption('Alert', function() {
-    alert('you hit Alert');
-  });
-  ab.show(function(choice) {
-    console.info('choice was', choice);
-  });
-});
-
-</script>
-</body>
-</html>
diff --git a/node_modules/dialog-polyfill/tests/backdrop.html b/node_modules/dialog-polyfill/tests/backdrop.html
deleted file mode 100644
index 77c6d81..0000000
--- a/node_modules/dialog-polyfill/tests/backdrop.html
+++ /dev/null
@@ -1,38 +0,0 @@
-<!DOCTYPE html>
-<html>
-<meta charset='utf-8'>
-<head>
-<script src="../dist/dialog-polyfill.js"></script>
-<link rel="stylesheet" type="text/css" href="../dist/dialog-polyfill.css">
-<style>
-dialog {
-  height: 100px;
-  width: 100px;
-}
-
-dialog + .backdrop {
-  background-color: rgba(0,255,0,0.5);
-}
-</style>
-</head>
-<body>
-<p>Test for backdrop. The test passes if you see a green background behind the
-box.</p>
-<div id="console"></div>
-<dialog></dialog>
-<button id="inert-button">Can't click me</button>
-<script>
-function writeToConsole(s) {
-  var console = document.getElementById('console');
-  var span = document.createElement('span');
-  span.textContent = s;
-  console.appendChild(span);
-  console.appendChild(document.createElement('br'));
-}
-
-var dialog = document.querySelector('dialog');
-dialogPolyfill.registerDialog(dialog);
-dialog.showModal();
-</script>
-</body>
-</html>
diff --git a/node_modules/dialog-polyfill/tests/dialog-centering.html b/node_modules/dialog-polyfill/tests/dialog-centering.html
deleted file mode 100644
index 0eaff60..0000000
--- a/node_modules/dialog-polyfill/tests/dialog-centering.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<html>
-<meta charset='utf-8'>
-<head>
-<script src="../dist/dialog-polyfill.js"></script>
-<link rel="stylesheet" type="text/css" href="../dist/dialog-polyfill.css">
-</head>
-<body>
-<p>Test that dialog is centered in the viewport. The test passes if you see a
-box in the center of the screen.</p>
-<div id="console"></div>
-<dialog>Hello</dialog>
-<script>
-function writeToConsole(s) {
-  var console = document.getElementById('console');
-  var span = document.createElement('span');
-  span.textContent = s;
-  console.appendChild(span);
-  console.appendChild(document.createElement('br'));
-}
-
-function checkCentered(dialog) {
-  var expectedTop = (window.innerHeight - dialog.offsetHeight) / 2;
-  var expectedLeft = (window.innerWidth - dialog.offsetWidth) / 2;
-  var rect = dialog.getBoundingClientRect();
-  if (rect.top == expectedTop && rect.left == expectedLeft) {
-    writeToConsole('SUCCESS');
-  } else {
-    writeToConsole('FAIL: expected dialog top,left to be ' +
-        expectedTop + ',' + expectedLeft + ' and was actually ' +
-        rect.top + ',' + rect.left);
-  }
-}
-
-var dialog = document.querySelector('dialog');
-dialogPolyfill.registerDialog(dialog);
-dialog.show();
-checkCentered(dialog);
-</script>
-</body>
-</html>
diff --git a/node_modules/dialog-polyfill/tests/dialog-recentering.html b/node_modules/dialog-polyfill/tests/dialog-recentering.html
deleted file mode 100644
index 5d09f21..0000000
--- a/node_modules/dialog-polyfill/tests/dialog-recentering.html
+++ /dev/null
@@ -1,65 +0,0 @@
-<!DOCTYPE html>
-<html>
-<meta charset='utf-8'>
-<head>
-<script src="../dist/dialog-polyfill.js"></script>
-<link rel="stylesheet" type="text/css" href="../dist/dialog-polyfill.css">
-<style>
-body {
-  height: 10000px;
-}
-dialog {
-  width: 100px;
-}
-#console {
-  position: fixed;
-}
-#ruler {
-  position: absolute;
-  left: 0;
-  width: 100%;
-}
-</style>
-</head>
-<body>
-<p>Test that dialog is recentered if reopened. The test passes if you see a
-box in the center of the screen.</p>
-<div id="ruler"></div>
-<div id="console"></div>
-<dialog></dialog>
-<script>
-function writeToConsole(s) {
-  var console = document.getElementById('console');
-  var span = document.createElement('span');
-  span.textContent = s;
-  console.appendChild(span);
-  console.appendChild(document.createElement('br'));
-}
-
-function windowWidthMinusScrollbar() {
-  return document.getElementById('ruler').offsetWidth;
-}
-
-function checkCentered(dialog) {
-  var expectedTop = (window.innerHeight - dialog.offsetHeight) / 2;
-  var expectedLeft = (windowWidthMinusScrollbar() - dialog.offsetWidth) / 2;
-  var rect = dialog.getBoundingClientRect();
-  if (rect.top == expectedTop && rect.left == expectedLeft) {
-    writeToConsole('SUCCESS');
-  } else {
-    writeToConsole('FAIL: expected dialog top,left to be ' +
-        expectedTop + ',' + expectedLeft + ' and was actually ' +
-        rect.top + ',' + rect.left);
-  }
-}
-
-var dialog = document.querySelector('dialog');
-dialogPolyfill.registerDialog(dialog);
-dialog.show();
-dialog.close();
-window.scrollTo(0, 500);
-dialog.show();
-checkCentered(dialog);
-</script>
-</body>
-</html>
diff --git a/node_modules/dialog-polyfill/tests/fancy-modal-dialog.html b/node_modules/dialog-polyfill/tests/fancy-modal-dialog.html
deleted file mode 100644
index 3e10740..0000000
--- a/node_modules/dialog-polyfill/tests/fancy-modal-dialog.html
+++ /dev/null
@@ -1,270 +0,0 @@
-<!DOCTYPE html>
-<html>
-<head>
-<script src="../dist/dialog-polyfill.js"></script>
-<link rel="stylesheet" type="text/css" href="../dist/dialog-polyfill.css">
-<style>
-#close-button {
-    position: absolute;
-    top: 7px;
-    right: 7px;
-    height: 14px;
-    width: 14px;
-    margin: 0;
-    background-image: url('resources/close_dialog.png');
-}
-
-#close-button:hover {
-    background-image: url('resources/close_dialog_hover.png');
-}
-
-dialog {
-/*    width: 50%;
-    border-radius: 3px;
-    opacity: 0;
-    background: white;
-    box-shadow: 0 4px 23px 5px rgba(0, 0, 0, 0.2), 0 2px 6px rgba(0,0,0,0.15);
-    color: #333;
-    min-width: 400px;
-    padding: 0;
-    z-index: 100;
-    border: 0;
-    padding: 15px;
-*/}
-
-dialog + .backdrop {
-    position: fixed;
-    top: 0;
-    bottom: 0;
-    left: 0;
-    right: 0;
-}
-
-dialog.no-backdrop + .backdrop {
-    display: none;
-}
-
-.dialog-setting {
-    margin: 30px;
-}
-
-/* keyframes used to pulse the overlay */
-@-webkit-keyframes pulse {
- 0% {
-   -webkit-transform: scale(1);
- }
- 40% {
-   -webkit-transform: scale(1.05);
-  }
- 60% {
-   -webkit-transform: scale(1.05);
-  }
- 100% {
-   -webkit-transform: scale(1);
- }
-}
-
-.pulse {
-  -webkit-animation-duration: 180ms;
-  -webkit-animation-iteration-count: 1;
-  -webkit-animation-name: pulse;
-  -webkit-animation-timing-function: ease-in-out;
-}
-#messages {
-    background-color: red;
-}
-body {
-   font-family: sans-serif;
-}
-
-#open-button {
-  position: fixed;
-  bottom: 0;
-  left: 0;
-  background-color: lightgray;
-  border: 1px solid;
-  margin: 10px;
-  padding: 15px;
-}
-
-#open-button:active {
-  background-color: lime;
-  margin: 9px;
-}
-
-#backdrop {
-    display: none;
-    position: fixed;
-    top:0;
-    right:0;
-    bottom:0;
-    left:0;
-    background: rgba(0,0,0,0.5);
-    z-index: 10;
-}
-.post {
-    margin: 10px;
-    padding: 5px;
-    border: 2px solid;
-}
-
-.post-buttons {
-    margin: 5px;
-    text-align: right;
-}
-.post-button:hover {
-    color: green;
-    font-weight: bold;
-}
-</style>
-<body>
-<div id="messages"></div>
-<dialog id="dialog" class="_dialog_fixed">
-    <h3>Reshare</h3>
-    <input type="text" style="width: 75%" value="I am resharing this."><br>
-    <div class="dialog-setting">
-        <input id="click-outside-to-close" type="checkbox">
-        <label for="click-outside-to-close">Close dialog upon clicking outside</label>
-    </div>
-    <div class="dialog-setting">
-        <input id="enable-backdrop" type="checkbox" checked>
-        <label for="enable-backdrop">Enable ::backdrop</label>
-    </div>
-    <div id="close-button"></div>
-</dialog>
-<div id="post-container"></div>
-<script>
-var dialog = document.getElementById('dialog');
-dialogPolyfill.registerDialog(dialog);
-
-function createPostButton(container, text) {
-   var link = document.createElement('a');
-   link.href = 'javascript:void(0)';
-   link.textContent = text;
-   link.className = 'post-button';
-   container.appendChild(link);
-   var span = document.createElement('span');
-   span.textContent = ' ';
-   container.appendChild(span);
-   return link;
-}
-
-SampleText = 'From this spot I rise not, valiant knight, until your ' +
-             'courtesy grants me the boon I seek, one that will redound ' +
-             'to your praise and the benefit of the human race.';
-
-function createPost(container) {
-    var post = document.createElement('div');
-    post.className = 'post';
-    var postContent = document.createElement('div');
-    postContent.className = 'post-content';
-    postContent.textContent = SampleText;
-    post.appendChild(postContent);
-    var postButtons = document.createElement('div');
-    postButtons.className = 'post-buttons';
-    post.appendChild(postButtons);
-    var reshare = createPostButton(postButtons, 'Reshare');
-    reshare.addEventListener('click', openDialog);
-    var reply = createPostButton(postButtons, 'Reply');
-    reply.addEventListener('click', openDialog);
-    createPostButton(postButtons, 'Enjoyed this post');
-
-    container.appendChild(post);
-    return post;
-}
-
-function initPosts() {
-    var container = document.getElementById('post-container');
-    for (var i = 0; i < 25; ++i) {
-       var post = createPost(container);
-    }
-}
-
-function shouldCloseDialogOnClickOutside() {
-    return document.getElementById('click-outside-to-close').checked;
-}
-
-function closeDialog() {
-    if (dialog.open)
-        dialog.close();
-}
-
-function computeCenteredTop(dialog) {
-    dialog.style.transition = '';
-    dialog.showModal();
-    var computedTopPx = window.getComputedStyle(dialog).top;
-    var computedTop = parseInt(computedTopPx.substring(0, computedTopPx.length - 2), 10);
-    dialog.close();
-    return computedTop;
-}
-
-function openDialog() {
-    dialog.style.opacity = 0;
-    dialog.style.transition = 'all 250ms ease';
-
-    dialog.showModal();
-
-    dialog.style.opacity = 1;
-}
-
-function pulseDialog() {
-  if (!dialog.style.webkitAnimation) {
-    return;
-  }
-  // classList isn't supported in IE8, but it's safe to use here as this only
-  // runs inside WebKit/Chrome anyway.
-  dialog.classList.add('pulse');
-  dialog.addEventListener('webkitAnimationEnd', function(e) {
-    dialog.classList.remove('pulse');
-  });
-}
-
-function clickedInDialog(mouseEvent) {
-    var rect = dialog.getBoundingClientRect();
-    return rect.top <= mouseEvent.clientY && mouseEvent.clientY <= rect.top + rect.height
-        && rect.left <= mouseEvent.clientX && mouseEvent.clientX <= rect.left + rect.width;
-}
-
-function handleClickOutsideDialog() {
-    if (!shouldCloseDialogOnClickOutside()) {
-        pulseDialog();
-        return
-    }
-    closeDialog();
-}
-
-document.body.addEventListener('keydown', function(e) {
-    if (e.keyCode == 27)
-        closeDialog();
-});
-
-var enableBackdrop = document.getElementById('enable-backdrop');
-enableBackdrop.addEventListener('change', function(e) {
-  if (this.checked) {
-    dialog.className = '';
-  } else {
-    dialog.className = 'no-backdrop';
-  }
-});
-
-var closeButton = document.getElementById('close-button');
-closeButton.addEventListener('click', function(e) { closeDialog(); });
-
-document.body.addEventListener('click', function(e) {
-  console.info('document body click', e.target);
-    if (!dialog.open)
-        return;
-    if (e.target != document.body)
-        return;
-    handleClickOutsideDialog();
-});
-
-dialog.addEventListener('click', function(e) {
-    if (clickedInDialog(e))
-        return;
-    handleClickOutsideDialog();
-});
-initPosts();
-</script>
-</body>
-</html>
diff --git a/node_modules/dialog-polyfill/tests/form.html b/node_modules/dialog-polyfill/tests/form.html
deleted file mode 100644
index 75e1645..0000000
--- a/node_modules/dialog-polyfill/tests/form.html
+++ /dev/null
@@ -1,48 +0,0 @@
-<!DOCTYPE html>
-<html>
-<meta charset='utf-8'>
-<head>
-<script src="../dist/dialog-polyfill.js"></script>
-<link rel="stylesheet" type="text/css" href="../dist/dialog-polyfill.css">
-</head>
-<body>
-
-  <p>
-Enter a value and submit the form. The close event will be fired and the <code>returnValue</code> of the dialog will be alerted.
-  </p>
-
-<input type="text" placeholder="Focusable pre" />
-
-<dialog>
-  <form method="dialog">
-    <input type="text" placeholder="Enter value" />
-    <input type="reset" value="Reset" />
-    <input type="submit" value="Stuff" />
-    <input type="submit" value="Done" />
-    <button type="submit" value="Button Value Is Different Than Text">Button Submit</button>
-    <button value="Regular Button Value">Button</button>
-  </form>
-</dialog>
-
-<button id="show">Show Dialog</button>
-
-<input type="text" placeholder="Focusable post" />
-
-
-<script>
-var dialog = document.querySelector('dialog');
-dialogPolyfill.registerDialog(dialog);
-dialog.showModal();
-
-dialog.addEventListener('close', function() {
-  var valueEl = dialog.querySelector('input[type="text"]');
-  alert(dialog.returnValue);
-});
-
-show.addEventListener('click', function() {
-  dialog.showModal();
-});
-
-</script>
-</body>
-</html>
diff --git a/node_modules/dialog-polyfill/tests/modal-dialog-stacking.html b/node_modules/dialog-polyfill/tests/modal-dialog-stacking.html
deleted file mode 100644
index e111ee4..0000000
--- a/node_modules/dialog-polyfill/tests/modal-dialog-stacking.html
+++ /dev/null
@@ -1,89 +0,0 @@
-<!DOCTYPE html>
-<html>
-<meta charset='utf-8'>
-<head>
-<script src="../dist/dialog-polyfill.js"></script>
-<link rel="stylesheet" type="text/css" href="../dist/dialog-polyfill.css">
-<style>
-dialog {
-    padding: 0px;
-    border: none;
-    margin: 0px;
-}
-
-#bottom + .backdrop {
-    top: 100px;
-    left: 100px;
-    height: 300px;
-    width: 300px;
-    background-color: rgb(0, 50, 0);
-    z-index: 100;  /* z-index has no effect. */
-}
-
-#bottom {
-    top: 125px;
-    left: 125px;
-    height: 250px;
-    width: 250px;
-    background-color: rgb(0, 90, 0);
-}
-
-#middle + .backdrop {
-    top: 150px;
-    left: 150px;
-    height: 200px;
-    width: 200px;
-    background-color: rgb(0, 130, 0);
-    z-index: -100;  /* z-index has no effect. */
-}
-
-#middle {
-    top: 175px;
-    left: 175px;
-    height: 150px;
-    width: 150px;
-    background-color: rgb(0, 170, 0);
-}
-
-#top + .backdrop {
-    top: 200px;
-    left: 200px;
-    height: 100px;
-    width: 100px;
-    background-color: rgb(0, 210, 0);
-    z-index: 0;  /* z-index has no effect. */
-}
-
-#top {
-    top: 225px;
-    left: 225px;
-    height: 50px;
-    width: 50px;
-    background-color: rgb(0, 255, 0);
-    z-index: -1000;  /* z-index has no effect. */
-}
-</style>
-</head>
-<body>
-Test for modal dialog and backdrop stacking order. The test passes if there are
-6 boxes enclosed in each other, becoming increasingly smaller and brighter
-green.
-<dialog id="top"></dialog>
-<dialog id="middle"></dialog>
-<dialog id="bottom"></dialog>
-<script>
-var topDialog = document.getElementById('top');
-dialogPolyfill.registerDialog(topDialog);
-var middleDialog = document.getElementById('middle');
-dialogPolyfill.registerDialog(middleDialog);
-var bottomDialog = document.getElementById('bottom');
-dialogPolyfill.registerDialog(bottomDialog);
-
-topDialog.showModal();
-bottomDialog.showModal();
-topDialog.close();  // Just to shuffle the top layer order around a little.
-middleDialog.showModal();
-topDialog.showModal();
-</script>
-</body>
-</html>
diff --git a/node_modules/dialog-polyfill/tests/modal-dialog.html b/node_modules/dialog-polyfill/tests/modal-dialog.html
deleted file mode 100644
index be98e91..0000000
--- a/node_modules/dialog-polyfill/tests/modal-dialog.html
+++ /dev/null
@@ -1,62 +0,0 @@
-<!DOCTYPE html>
-<html tabindex="0">
-<meta charset='utf-8'>
-<head>
-<script src="../dist/dialog-polyfill.js"></script>
-<meta name="viewport" content="width=device-width, user-scalable=no">
-<link rel="stylesheet" type="text/css" href="../dist/dialog-polyfill.css">
-<style>
-  html {
-    border: 4px solid white;
-  }
-  html:focus {
-    border-color: red;
-  }
-dialog {
-  width: 100px;
-}
-</style>
-</head>
-<body>
-<p>Test for modal dialog. The test passes if you can click on "Click me" button,
-but can't click or tab to the "Can't click me!" button</p>
-<div id="console"></div>
-
-<input type="text" placeholder="Test 1" tabindex="1" />
-<input type="text" placeholder="Test 2" tabindex="2" />
-<input type="text" placeholder="Test 2.1" tabindex="2" />
-<input type="text" placeholder="Test 3" tabindex="3" />
-
-<input type="text" placeholder="Before dialog" />
-<dialog>
-  <button id="dialog-button">Click me</button>
-  <input type="text" placeholder="Focus me" />
-  <input type="text" placeholder="Focus me again" />
-</dialog>
-<button id="inert-button">Can't click me</button>
-<input type="text" placeholder="Can't focus me" />
-<script>
-function writeToConsole(s) {
-  var console = document.getElementById('console');
-  var span = document.createElement('span');
-  span.textContent = s;
-  console.appendChild(span);
-  console.appendChild(document.createElement('br'));
-}
-
-var dialog = document.querySelector('dialog');
-dialogPolyfill.registerDialog(dialog);
-dialog.showModal();
-
-var dialogButton = document.getElementById('dialog-button');
-dialogButton.addEventListener('click', function(e) {
-  writeToConsole("SUCCESS: dialog's button was clicked");
-});
-
-var inertButton = document.getElementById('inert-button');
-inertButton.addEventListener('click', function(e) {
-  writeToConsole('FAIL: inert button was clicked');
-});
-</script>
-</body>
-</html>
diff --git a/node_modules/dialog-polyfill/tests/resources/close_dialog.png b/node_modules/dialog-polyfill/tests/resources/close_dialog.png
deleted file mode 100644
index 793f60e..0000000
--- a/node_modules/dialog-polyfill/tests/resources/close_dialog.png
+++ /dev/null
Binary files differ
diff --git a/node_modules/dialog-polyfill/tests/resources/close_dialog_hover.png b/node_modules/dialog-polyfill/tests/resources/close_dialog_hover.png
deleted file mode 100644
index fe896f9..0000000
--- a/node_modules/dialog-polyfill/tests/resources/close_dialog_hover.png
+++ /dev/null
Binary files differ
diff --git a/node_modules/dialog-polyfill/tests/respect-positioned-dialog.html b/node_modules/dialog-polyfill/tests/respect-positioned-dialog.html
deleted file mode 100644
index 1272136..0000000
--- a/node_modules/dialog-polyfill/tests/respect-positioned-dialog.html
+++ /dev/null
@@ -1,59 +0,0 @@
-<!DOCTYPE html>
-<html>
-<meta charset='utf-8'>
-<head>
-<script src="../dist/dialog-polyfill.js"></script>
-<link rel="stylesheet" type="text/css" href="../dist/dialog-polyfill.css">
-<style>
-dialog {
-  display: none;
-  height: 50px;
-  width: 50px;
-  padding: 0;
-  margin: 0;
-}
-
-dialog.left {
-  top: 100px;
-  left: 100px;
-}
-
-#middle {
-  top: 100px;
-  left: 200px;
-}
-</style>
-</head>
-<body>
-<p>Test that dialogs with an explicit static position don't get auto-centered.
-The test passes if there are three boxes aligned in a single row.</p>
-<div id="console"></div>
-<dialog id="left" class="left"></dialog>
-<dialog id="middle"></dialog>
-<dialog id="right"></dialog>
-<script>
-function writeToConsole(s) {
-  var console = document.getElementById('console');
-  var span = document.createElement('span');
-  span.textContent = s;
-  console.appendChild(span);
-  console.appendChild(document.createElement('br'));
-}
-
-var dialogs = document.querySelectorAll('dialog');
-for (var i = 0; i < dialogs.length; ++i)
-  dialogPolyfill.registerDialog(dialogs[i]);
-
-var leftDialog = document.getElementById('left');
-leftDialog.show();
-
-var middleDialog = document.getElementById('middle');
-middleDialog.show();
-
-var rightDialog = document.getElementById('right');
-rightDialog.style.top = '100px';
-rightDialog.style.left = '300px';
-rightDialog.show();
-</script>
-</body>
-</html>
diff --git a/node_modules/dialog-polyfill/tests/stacking.html b/node_modules/dialog-polyfill/tests/stacking.html
deleted file mode 100644
index 54de723..0000000
--- a/node_modules/dialog-polyfill/tests/stacking.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<html>
-<meta charset='utf-8'>
-<head>
-<script src="../dist/dialog-polyfill.js"></script>
-<link rel="stylesheet" type="text/css" href="../dist/dialog-polyfill.css">
-</head>
-<body>
-
-  <p>
-The dialog below is incorrectly positioned within a stacking context.
-It should generate a console warning message, and place the <code>_dialog_overlay</code> in a different place in order to try to work around the problem without moving the dialog itself.
-  </p>
-
-<div style="position: absolute; top: 100px; left: 10vw; width: 80vw; height: 400px; background: blue; opacity: 0.7;">
-
-<dialog>
-  <form method="dialog">
-    <input type="submit" />
-  </form>
-  <p>
-    Help, I'm inside an extra stacking context D:
-  </p>
-</dialog>
-
-</div>
-
-<button id="show">Show Dialog</button>
-
-<script>
-var dialog = document.querySelector('dialog');
-dialogPolyfill.registerDialog(dialog);
-dialog.showModal();
-
-show.addEventListener('click', function() {
-  dialog.showModal();
-});
-
-</script>
-</body>
-</html>