From 729e04e17581a7a5a641b586497017485e9afc1e Mon Sep 17 00:00:00 2001
From: James Diacono <james@diacono.com.au>
Date: Wed, 11 Sep 2019 11:07:22 +1000
Subject: [PATCH 1/2] fix(core): ensure thrown errors contain stacktraces

---
 core/native-bridge.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/core/native-bridge.js b/core/native-bridge.js
index cb374f4c4..13b1ae888 100644
--- a/core/native-bridge.js
+++ b/core/native-bridge.js
@@ -217,6 +217,11 @@
       if (storedCall) {
         // looks like we've got a stored call
 
+        if (result.error) {
+          // ensure stacktraces
+          result.error = Object.assign(new Error(), result.error);
+        }
+
         if (typeof storedCall.callback === 'function') {
           // callback
           if (result.success) {

From 6bfd3ee3914ebe9ac0c8786eb6586b8e73c4a7bc Mon Sep 17 00:00:00 2001
From: James Diacono <james@diacono.com.au>
Date: Wed, 11 Sep 2019 11:41:53 +1000
Subject: [PATCH 2/2] fix(core): replace Object.assign with backward compatible
 alternative

---
 core/native-bridge.js | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/core/native-bridge.js b/core/native-bridge.js
index 13b1ae888..385c96afc 100644
--- a/core/native-bridge.js
+++ b/core/native-bridge.js
@@ -217,9 +217,12 @@
       if (storedCall) {
         // looks like we've got a stored call
 
-        if (result.error) {
-          // ensure stacktraces
-          result.error = Object.assign(new Error(), result.error);
+        if (result.error && typeof result.error === 'object') {
+          // ensure stacktraces by copying error properties to an Error
+          result.error = Object.keys(result.error).reduce(function(err, key) {
+            err[key] = result.error[key];
+            return err;
+          }, new Error());
         }
 
         if (typeof storedCall.callback === 'function') {