Better error check

See #990 (comment)
petkaantonov · Oct 3, 2017 · 3f7ccf4 · 3f7ccf4
1 parent f8f4a01
commit 3f7ccf4
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/src/util.js b/src/util.js
@@ -234,10 +234,11 @@ function safeToString(obj) {
 }
 
 function isError(obj) {
-    return obj !== null &&
+    return obj instanceof Error ||
+        (obj !== null &&
            typeof obj === "object" &&
            typeof obj.message === "string" &&
-           typeof obj.name === "string";
+           typeof obj.name === "string");
 }
 
 function markAsOriginatingFromRejection(e) {