From 38c3a44bf9b81c28757108d12e7847e9a6f8faea Mon Sep 17 00:00:00 2001
From: Krzysztof Kotlarek <kotlarek.krzysztof@gmail.com>
Date: Mon, 20 Sep 2021 16:03:02 +1000
Subject: [PATCH] FIX: return empty array when no parent for range (#14386)

If parent element for range does not exists, range calculator should
return empty array. In that case duration calculations will stop because
of:

```
if (_rangeElements(element).length === 2) {
  opts.duration = _calculateDuration(element);
}
```
---
 .../javascripts/initializers/discourse-local-dates.js.es6      | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/plugins/discourse-local-dates/assets/javascripts/initializers/discourse-local-dates.js.es6 b/plugins/discourse-local-dates/assets/javascripts/initializers/discourse-local-dates.js.es6
index 50d543c971e..dad88fbd251 100644
--- a/plugins/discourse-local-dates/assets/javascripts/initializers/discourse-local-dates.js.es6
+++ b/plugins/discourse-local-dates/assets/javascripts/initializers/discourse-local-dates.js.es6
@@ -63,6 +63,9 @@ function buildOptionsFromElement(element, siteSettings) {
 }
 
 function _rangeElements(element) {
+  if (!element.parentElement) {
+    return [];
+  }
   return Array.from(element.parentElement.children).filter(
     (span) => span.dataset.date
   );