From f18d659a432d59f6c19ecb8758722d384dfe71e1 Mon Sep 17 00:00:00 2001
From: Vikram Subramanian <viks@google.com>
Date: Mon, 10 Sep 2018 23:48:50 -0700
Subject: [PATCH] fix(onProperty): user quoted access for
 __Zone_ignore_on_properties

Avoid closure renaming while accessing the global symbol.
---
 lib/browser/property-descriptor.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/browser/property-descriptor.ts b/lib/browser/property-descriptor.ts
index 848204385..60500d2d7 100644
--- a/lib/browser/property-descriptor.ts
+++ b/lib/browser/property-descriptor.ts
@@ -272,7 +272,7 @@ export function propertyDescriptorPatch(api: _ZonePrivate, _global: any) {
 
   const supportsWebSocket = typeof WebSocket !== 'undefined';
   if (canPatchViaPropertyDescriptor()) {
-    const ignoreProperties: IgnoreProperty[] = _global.__Zone_ignore_on_properties;
+    const ignoreProperties: IgnoreProperty[] = _global['__Zone_ignore_on_properties'];
     // for browsers that we can patch the descriptor:  Chrome & Firefox
     if (isBrowser) {
       const internalWindow: any = window;