Update jsdom to v16 (#20)

Used in the DOM interface for using JsonML to interact with the DOM
and impacts functionality within a node runtime environment.

Update the html.patch method to prevent raising an error on text nodes.
Prior to updating jsdom, the node was not updated but no error was emitted.

CHANGELOG.md

@@ -10,6 +10,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - Ensure valid table structure when creating or updating elements when
   using the `toHTML()` or `patch()` methods ([#28])
 
+### Changed
+- Update jsdom to v16, used in the DOM interface for using JsonML to interact with the DOM.
+
+
 [#28]: https://github.com/CondeNast/jsonml.js/pull/28
 
 ### Chores

lib/dom.js

@@ -10,7 +10,7 @@
 
 'use strict';
 
-const jsdom = require('jsdom').jsdom;
+const { JSDOM } = require('jsdom');
 
 /**
  * A JsonML node represented as an Array or string value
@@ -206,7 +206,7 @@ var fromHTML = exports.fromHTML = function(elem, filter) {
 };
 
 const doc = typeof document === 'undefined' ?
-      jsdom(undefined, {}) :
+      (new JSDOM()).window.document :
       document;
 
 /**

lib/html.js

@@ -642,6 +642,10 @@ exports.onerror = null;
  * @return {Node} DOM Node
  */
 var patch = exports.patch = function(elem, jml, filter) {
+  // Cannot patch text nodes
+  if (elem.nodeType === 3) {
+    return elem;
+  }
 
   for (var i=1; i<jml.length; i++) {
     if (isArray(jml[i]) || 'string' === typeof jml[i]) {