Add support for IE and Edge. Fixes #214

src/grapesjs/index.js

@@ -1,5 +1,8 @@
 import $ from 'cash-dom';
 import { defaults } from 'underscore';
+import polyfills from 'utils/polyfills';
+
+polyfills();
 
 module.exports = (() => {
   const defaultConfig = require('./config/config');

src/utils/Sorter.js

@@ -925,7 +925,7 @@ module.exports = Backbone.View.extend({
     var dragHelper = this.dragHelper;
 
     if(dragHelper) {
-      dragHelper.remove();
+      dragHelper.parentNode.removeChild(dragHelper);
       this.dragHelper = null;
     }
 

src/utils/polyfills.js

@@ -0,0 +1,38 @@
+/**
+ * File made for IE/Edge support
+ * https://github.com/artf/grapesjs/issues/214
+ */
+
+export default () => {
+
+  /**
+   * Check if IE/Edge
+   * @return {Boolean}
+   */
+  const isIE = () => {
+    let match;
+    const agent = window.navigator.userAgent;
+    const rules = [
+      [ 'edge', /Edge\/([0-9\._]+)/ ],
+      [ 'ie', /MSIE\s(7\.0)/ ],
+      [ 'ie', /MSIE\s([0-9\.]+);.*Trident\/[4-7].0/ ],
+      [ 'ie', /Trident\/7\.0.*rv\:([0-9\.]+).*\).*Gecko$/ ],
+    ];
+
+    for (let i = 0; i < rules.length; i++) {
+      const rule = rules[i];
+      match = rule[1].exec(agent);
+      if (match) break;
+    }
+
+    return !!match;
+  }
+
+  if (isIE()) {
+    const originalCreateHTMLDocument = DOMImplementation.prototype.createHTMLDocument
+    DOMImplementation.prototype.createHTMLDocument = (title) => {
+      if (!title) title = '';
+      return originalCreateHTMLDocument.apply(document.implementation, [title]);
+    }
+  }
+}