From 8991667fad58c6f58191a82b3d025adcb8e09e52 Mon Sep 17 00:00:00 2001
From: Petka Antonov <petka_antonov@hotmail.com>
Date: Wed, 29 May 2019 11:29:13 +0300
Subject: [PATCH] Fixes #1509

---
 src/debuggability.js | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/debuggability.js b/src/debuggability.js
index b99939823..b939fa66f 100644
--- a/src/debuggability.js
+++ b/src/debuggability.js
@@ -154,10 +154,11 @@ var fireDomEvent = (function() {
                     detail: event,
                     cancelable: true
                 };
-                es5.defineProperty(
-                    eventData, "promise", {value: event.promise});
-                es5.defineProperty(eventData, "reason", {value: event.reason});
                 var domEvent = new CustomEvent(name.toLowerCase(), eventData);
+                es5.defineProperty(
+                    domEvent, "promise", {value: event.promise});
+                es5.defineProperty(
+                    domEvent, "reason", {value: event.reason});
                 return !util.global.dispatchEvent(domEvent);
             };
         // In Firefox < 48 CustomEvent is not available in workers but