From a77e462105ce90634ee6a5537eb34aa013ecdea6 Mon Sep 17 00:00:00 2001
From: David Anderson <eymiha@gmail.com>
Date: Sat, 3 Dec 2016 15:55:37 -0500
Subject: [PATCH] =?UTF-8?q?fix:=20#2402=20make=20sure=20a=20given=20elemen?=
 =?UTF-8?q?t=20isn=E2=80=99t=20undefined=20before=20accessing=20properties?=
 =?UTF-8?q?=20(#2403)?=
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---
 lib/util.js | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/lib/util.js b/lib/util.js
index 22deac1d..54d68bf7 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -1488,17 +1488,19 @@ exports.topMost = function (pile, accessors) {
     accessors = [accessors];
   }
   for (const member of pile) {
-    candidate = member[accessors[0]];
-    for (let i = 1; i < accessors.length; i++){
+    if (member) {
+      candidate = member[accessors[0]];
+      for (let i = 1; i < accessors.length; i++){
+        if (candidate) {
+          candidate = candidate[accessors[i]]
+        } else {
+          continue;
+        }
+      }
       if (candidate) {
-        candidate = candidate[accessors[i]]
-      } else {
-        continue;
+        break;
       }
     }
-    if (candidate) {
-      break;
-    }
   }
   return candidate;
-}
+};