Fix IE11 blank page due to `Array.from`. Closes #1253

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "grapesjs",
-  "version": "0.14.21",
+  "version": "0.14.22",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {

package.json

@@ -1,7 +1,7 @@
 {
   "name": "grapesjs",
   "description": "Free and Open Source Web Builder Framework",
-  "version": "0.14.21",
+  "version": "0.14.22",
   "author": "Artur Arseniev",
   "license": "BSD-3-Clause",
   "homepage": "http://grapesjs.com",

src/editor/model/Editor.js

@@ -1,4 +1,4 @@
-import { isUndefined, defaults, isArray, contains } from 'underscore';
+import { isUndefined, defaults, isArray, contains, toArray } from 'underscore';
 import { getModel } from 'utils/mixins';
 
 const deps = [
@@ -59,10 +59,11 @@ module.exports = Backbone.Model.extend({
     this.set('modules', []);
     this.set('toLoad', []);
     this.set('storables', []);
+    const el = c.el;
 
-    if (c.el && c.fromElement) this.config.components = c.el.innerHTML;
-    this.attrsOrig = c.el
-      ? [...c.el.attributes].reduce((res, next) => {
+    if (el && c.fromElement) this.config.components = el.innerHTML;
+    this.attrsOrig = el
+      ? toArray(el.attributes).reduce((res, next) => {
           res[next.nodeName] = next.nodeValue;
           return res;
         }, {})