fix(zone): fix conflict with Polymer elements

Rob Dodson · btford · commit 77b4c0d2960a · 2015-08-31T11:09:48.000-07:00
I noticed when including Polymer 1.0 elements in an Angular 2 app, this line throws an error saying it can't find `value` of undefined. I've added a simple workaround which seems to fix the issue and (so far at least) doesn't seem to cause any additional issues with Polymer or Angular. cc @justinfagnani @addyosmani
diff --git a/lib/patch/register-element.js b/lib/patch/register-element.js
@@ -21,7 +21,7 @@ function apply() {
       callbacks.forEach(function (callback) {
         if (opts.prototype.hasOwnProperty(callback)) {
           var descriptor = Object.getOwnPropertyDescriptor(opts.prototype, callback);
-          if (descriptor.value) {
+          if (descriptor && descriptor.value) {
             descriptor.value = global.zone.bind(descriptor.value);
             _redefineProperty(opts.prototype, callback, descriptor);
           } else {
