From 4c3bfeb6ff3fa17521eef270339043152b71408e Mon Sep 17 00:00:00 2001
From: Petka Antonov <petka_antonov@hotmail.com>
Date: Fri, 24 May 2019 18:11:25 +0300
Subject: [PATCH] Fixes #1537

---
 src/debuggability.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/debuggability.js b/src/debuggability.js
index c716f4ef3..9e5f399ef 100644
--- a/src/debuggability.js
+++ b/src/debuggability.js
@@ -705,8 +705,8 @@ function parseLineInfo(line) {
 
 function setBounds(firstLineError, lastLineError) {
     if (!longStackTracesIsSupported()) return;
-    var firstStackLines = firstLineError.stack.split("\n");
-    var lastStackLines = lastLineError.stack.split("\n");
+    var firstStackLines = (firstLineError.stack || "").split("\n");
+    var lastStackLines = (lastLineError.stack || "").split("\n");
     var firstIndex = -1;
     var lastIndex = -1;
     var firstFileName;