From d2a64aaad565e48f375e18690163e2036d7fb79a Mon Sep 17 00:00:00 2001
From: Klaus Buecher <buecher@optosolar.com>
Date: Tue, 1 Oct 2024 23:44:57 +0200
Subject: [PATCH] adapt for JSON.parse returning null

---
 calendar/experiments/calendar/parent/ext-calendar-provider.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/calendar/experiments/calendar/parent/ext-calendar-provider.js b/calendar/experiments/calendar/parent/ext-calendar-provider.js
index 89964eb..afed6ed 100644
--- a/calendar/experiments/calendar/parent/ext-calendar-provider.js
+++ b/calendar/experiments/calendar/parent/ext-calendar-provider.js
@@ -144,7 +144,8 @@ class ExtCalendar extends cal.provider.BaseClass {
     super.id = val;
     if (this.id && this.uri) {
       try {
-        this.capabilities = JSON.parse(super.getProperty("extensionCapabilities"));
+        this.capabilities = JSON.parse(super.getProperty("extensionCapabilities"))|| 
+          this.extension.manifest.calendar_provider.capabilities || {};
       } catch (e) {
         this.capabilities = this.extension.manifest.calendar_provider.capabilities || {};
       }