From a8fe715eee7c2c136508760758f937e36d71e023 Mon Sep 17 00:00:00 2001
From: Patrick Kettner <patrickkettner@gmail.com>
Date: Tue, 7 Dec 2021 18:42:54 -0500
Subject: [PATCH] `path` is not always a string, ensure  it isn\'t false-y
 before accessing it

---
 src/helpers/AmpConfig.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/helpers/AmpConfig.js b/src/helpers/AmpConfig.js
index 3b572e1..a3eb25d 100644
--- a/src/helpers/AmpConfig.js
+++ b/src/helpers/AmpConfig.js
@@ -30,7 +30,7 @@ const AmpConfig = (providedOptions) => {
     throw new Error(`filter needs to be a valid RegExp, provided : ${options.filter}`);
   }
 
-  options.isAmp = (path) => path.endsWith('.html') && options.filter.test(path);
+  options.isAmp = (path) => path && path.endsWith('.html') && options.filter.test(path);
 
   if (providedOptions.optimizeImages !== false && !providedOptions.imageOptimizer) {
     options.imageOptimizer = ImageOptimizer.create(options);