[[FIX]] Check stack in Error instances

therror · Oct 11, 2016 · e9a2c24 · e9a2c24
1 parent 8ed104e
commit e9a2c24
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/lib/index.js b/lib/index.js
@@ -139,7 +139,7 @@ function formatObject(error) {
 }
 
 function formatStack(error) {
-  if (error instanceof Error) {
+  if (error instanceof Error && error.stack != null) {
     var stack = error.stack;
     return stack.substring(stack.indexOf('\n') + 1);
   }