From 4c767bf58ebe5c224bbf5297b35edfa83b73f46e Mon Sep 17 00:00:00 2001
From: Rick Wargo <rickwargo@users.noreply.github.com>
Date: Fri, 16 Dec 2016 11:38:01 -0500
Subject: [PATCH] Protect against missing ICS properties

If the Summary, Location, or Description do not exist, don't try to remove tags.
---
 src/index.js | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/index.js b/src/index.js
index 1a76aa8..e266847 100644
--- a/src/index.js
+++ b/src/index.js
@@ -270,6 +270,8 @@ exports.handler = function (event, context, callback) {
 
 // Remove HTML tags from string
 function removeTags(str) {
+    if (!str) // some iCal properties may not exist
+        return str;
     return str.replace(/<(?:.|\n)*?>/gm, '');
 }