From 509f2cbc211d1c31536d7d778b6b6d162b7c86bc Mon Sep 17 00:00:00 2001
From: Jeremy Tice <jetpacmonkey@gmail.com>
Date: Fri, 26 Jan 2018 09:39:49 -0500
Subject: [PATCH] Use typeof === 'undefined' instead of void 0

---
 lib/rules/prop-types.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/rules/prop-types.js b/lib/rules/prop-types.js
index 3938a3df3c..7466c3a2f1 100644
--- a/lib/rules/prop-types.js
+++ b/lib/rules/prop-types.js
@@ -467,7 +467,7 @@ module.exports = {
      *    the property is declared without the need for further analysis.
      */
     function buildTypeAnnotationDeclarationTypes(annotation, seen) {
-      if (seen === void 0) {
+      if (typeof seen === 'undefined') {
         // Keeps track of annotations we've already seen to
         // prevent problems with recursive types.
         seen = new Set();