From 373e56eb689857b9679f599848c4694f8d786163 Mon Sep 17 00:00:00 2001
From: clerie <git@clerie.de>
Date: Wed, 16 Sep 2020 13:03:05 +0200
Subject: [PATCH] Observe only if there are any results

---
 js/reiseauskunft.js | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/js/reiseauskunft.js b/js/reiseauskunft.js
index 760b157..b58c796 100644
--- a/js/reiseauskunft.js
+++ b/js/reiseauskunft.js
@@ -7,7 +7,6 @@ function getMediaURL(path) {
   return chrome.runtime.getURL(path) || browser.runtime.getURL(path);
 }
 
-var target = document.getElementById('resultsOverview');
 
 var observer = new MutationObserver((mutations, observer) => {
     mutations.forEach((mutation) => {
@@ -31,7 +30,12 @@ var observer = new MutationObserver((mutations, observer) => {
     });
 });
 
-observer.observe(target, {
-  subtree: true,
-  childList: true
-});
+
+var target = document.getElementById('resultsOverview');
+
+if(typeof target !== 'undefined') {
+  observer.observe(target, {
+    subtree: true,
+    childList: true
+  });
+}