From 0510a532cdc6094dc6ed7769ee9c9a221ec8a123 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=81lvaro=20Velad=20Galv=C3=A1n?= <ladvan91@hotmail.com>
Date: Wed, 8 Jan 2025 11:28:00 +0100
Subject: [PATCH] fix(HLS): Omit daterange without START-DATE in order to avoid
 errors (#7841)
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Per the HLS spec, we require a START-DATE for SCTE35-IN
However, unlike for SCTE35-OUT and SCTE35-CMD, it’s not clear what that
value should be – and the HLS spec example does not include it.
---
 lib/hls/hls_parser.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/hls/hls_parser.js b/lib/hls/hls_parser.js
index 7ff3193605..69d0b1dcbf 100644
--- a/lib/hls/hls_parser.js
+++ b/lib/hls/hls_parser.js
@@ -3987,7 +3987,9 @@ shaka.hls.HlsParser = class {
     }
     let dateRangeTags =
         shaka.hls.Utils.filterTagsByName(tags, 'EXT-X-DATERANGE');
-    dateRangeTags = dateRangeTags.sort((a, b) => {
+    dateRangeTags = dateRangeTags.filter((tag) => {
+      return tag.getAttribute('START-DATE') != null;
+    }).sort((a, b) => {
       const aStartDateValue = a.getRequiredAttrValue('START-DATE');
       const bStartDateValue = b.getRequiredAttrValue('START-DATE');
       if (aStartDateValue < bStartDateValue) {