From 2024950170e2d0d104203bc447a3125f859defa7 Mon Sep 17 00:00:00 2001
From: kettanaito <kettanaito@gmail.com>
Date: Wed, 15 May 2019 18:41:37 +0200
Subject: [PATCH] fix: adds safety check before accessing "rule parent"

---
 index.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/index.js b/index.js
index 2acedea..f73437a 100644
--- a/index.js
+++ b/index.js
@@ -494,6 +494,7 @@ module.exports = postcss.plugin('postcss-modules-local-by-default', function(
 
     css.walkRules(function(rule) {
       if (
+        rule.parent &&
         rule.parent.type === 'atrule' &&
         /keyframes$/i.test(rule.parent.name)
       ) {