Fix IE11 errors and polyfills (#1255)

* Fix IE11 error - SCRIPT438: Object doesn't support property or method 'forEach'
* Update uikit polyfills to run pl in ie11
* Update packages/uikit-workshop/src/scripts/components/modal-styleguide.js
* Update modal-styleguide.js

Co-authored-by: Ofer Shaal <ofer@3paces.com> Josef Bredreck <slime.games@outlook.de>

Author: Ofer Shaal

packages/uikit-polyfills/index.js

@@ -1,56 +1,21 @@
-/**
-@license
-Copyright (c) 2017 The Polymer Project Authors. All rights reserved.
-This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
-The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
-The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
-Code distributed by Google as part of the polymer project is also
-subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-*/
-
-/*
- * Polyfills loaded: HTML Imports, Custom Elements, platform polyfills, template
- * Used in: IE 11
- */
-
 import 'regenerator-runtime/runtime';
-import '@webcomponents/template/template.js';
-import 'core-js/modules/es.array.find';
+import 'custom-event-polyfill';
+import 'get-own-property-symbols';
+import '@webcomponents/webcomponentsjs/webcomponents-bundle';
 
 import 'element-closest';
 import 'core-js/modules/es.string.includes';
+import 'core-js/modules/es.string.trim-end';
+import 'core-js/modules/es.string.trim-start';
+import 'core-js/modules/es.string.code-point-at';
+import 'core-js/modules/es.string.starts-with';
+import 'core-js/modules/es.number.is-nan';
+import 'core-js/modules/es.array.find';
 import 'core-js/modules/es.array.includes';
-// import 'core-js/modules/es.array.from';
-// import 'core-js/modules/es.object.assign';
-
-import './platform/remove-polyfill.js';
-import './platform/es6-misc';
-import './platform/custom-event';
-import './platform/promise';
-import './platform/symbol';
-import './platform/flag-parser';
-// import '@webcomponents/custom-elements/src/custom-elements.js';
-
-import '@webcomponents/custom-elements/src/custom-elements.js';
-
-// import 'document-register-element';
-// by default, the second argument is 'auto'
-// but it could be also 'force'
-// which ignores feature detection and force
-// the polyfill version of CustomElements
-// installCE(global, 'auto');
-
-import '@webcomponents/url/url.js';
-import './platform/baseuri';
-import './platform/unresolved';
-
+import 'core-js/modules/es.array.from';
 import 'core-js/modules/es.array.for-each';
-
-if (window.NodeList && !NodeList.prototype.forEach) {
-  NodeList.prototype.forEach = Array.prototype.forEach;
-}
-
-// import 'core-js/modules/es.string.trim-end';
-// import 'core-js/modules/es.string.trim-start';
-// import 'core-js/modules/es.string.code-point-at';
-// import 'core-js/modules/es.number.is-nan';
+import 'core-js/modules/es.object.assign';
+import 'core-js/modules/es.promise';
+import 'core-js/es6/symbol';
+import 'core-js/web/dom-collections';
+import 'core-js/web/url-search-params';

packages/uikit-polyfills/package.json

@@ -6,19 +6,11 @@
   "author": "Salem Ghoweri <me@salemghoweri.com>",
   "license": "MIT",
   "dependencies": {
-    "@ungap/weakset": "^0.1.5",
-    "@webcomponents/custom-elements": "^1.3.0",
-    "@webcomponents/shadycss": "^1.9.2",
-    "@webcomponents/shadydom": "^1.6.1",
-    "@webcomponents/template": "^1.4.1",
-    "@webcomponents/url": "^0.7.4",
-    "@webcomponents/webcomponentsjs": "^2.3.0",
-    "core-js": "^3.3.6",
+    "@webcomponents/webcomponentsjs": "^2.4.4",
+    "core-js": "^3.6.5",
     "custom-event-polyfill": "^1.0.7",
-    "document-register-element": "^1.14.3",
-    "es6-promise": "^4.2.8",
-    "get-own-property-symbols": "^0.9.3",
-    "promise-polyfill": "^8.0.0"
+    "element-closest": "^3.0.2",
+    "get-own-property-symbols": "^0.9.4"
   },
   "publishConfig": {
     "access": "public"