From 63fd4cf9e4be13a3f094658655bb3b0514edfaa7 Mon Sep 17 00:00:00 2001
From: Jelle Raaijmakers <jelle@ladybird.org>
Date: Thu, 19 Jun 2025 14:13:18 +0200
Subject: [PATCH] LibWeb: Add the EpochTimestamp IDL typedef

---
 .../LibWeb/HighResolutionTime/EpochTimeStamp.h   | 16 ++++++++++++++++
 .../LibWeb/HighResolutionTime/EpochTimeStamp.idl |  2 ++
 2 files changed, 18 insertions(+)
 create mode 100644 Libraries/LibWeb/HighResolutionTime/EpochTimeStamp.h
 create mode 100644 Libraries/LibWeb/HighResolutionTime/EpochTimeStamp.idl

diff --git a/Libraries/LibWeb/HighResolutionTime/EpochTimeStamp.h b/Libraries/LibWeb/HighResolutionTime/EpochTimeStamp.h
new file mode 100644
index 00000000000..27affe0ab4f
--- /dev/null
+++ b/Libraries/LibWeb/HighResolutionTime/EpochTimeStamp.h
@@ -0,0 +1,16 @@
+/*
+ * Copyright (c) 2025, Jelle Raaijmakers <jelle@ladybird.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibWeb/WebIDL/Types.h>
+
+namespace Web::HighResolutionTime {
+
+// https://www.w3.org/TR/hr-time-3/#the-epochtimestamp-typedef
+using EpochTimeStamp = WebIDL::UnsignedLongLong;
+
+}
diff --git a/Libraries/LibWeb/HighResolutionTime/EpochTimeStamp.idl b/Libraries/LibWeb/HighResolutionTime/EpochTimeStamp.idl
new file mode 100644
index 00000000000..62022f4b7a8
--- /dev/null
+++ b/Libraries/LibWeb/HighResolutionTime/EpochTimeStamp.idl
@@ -0,0 +1,2 @@
+// https://www.w3.org/TR/hr-time-3/#the-epochtimestamp-typedef
+typedef unsigned long long EpochTimeStamp;