From 511a9376e32fdb992487c9512f52ee8846f39d5a Mon Sep 17 00:00:00 2001
From: Martok <martok@martoks-place.de>
Date: Tue, 2 Jan 2024 01:56:12 +0100
Subject: [PATCH] Issue #2435 - Declare PromiseRejectionEvent WebIDL

Based-on: m-c 1338059
---
 dom/bindings/Codegen.py                 |  2 +-
 dom/webidl/PromiseRejectionEvent.webidl | 22 ++++++++++++++++++++++
 dom/webidl/moz.build                    |  1 +
 3 files changed, 24 insertions(+), 1 deletion(-)
 create mode 100644 dom/webidl/PromiseRejectionEvent.webidl

diff --git a/dom/bindings/Codegen.py b/dom/bindings/Codegen.py
index b7caaad7bb..3094a98c41 100644
--- a/dom/bindings/Codegen.py
+++ b/dom/bindings/Codegen.py
@@ -80,7 +80,7 @@ def idlTypeNeedsCycleCollection(type):
         type.isObject() or
         type.isSpiderMonkeyInterface()):
         return False
-    elif type.isCallback() or type.isGeckoInterface():
+    elif type.isCallback() or type.isPromise() or type.isGeckoInterface():
         return True
     elif type.isUnion():
         return any(idlTypeNeedsCycleCollection(t) for t in type.flatMemberTypes)
diff --git a/dom/webidl/PromiseRejectionEvent.webidl b/dom/webidl/PromiseRejectionEvent.webidl
new file mode 100644
index 0000000000..3c489f3db4
--- /dev/null
+++ b/dom/webidl/PromiseRejectionEvent.webidl
@@ -0,0 +1,22 @@
+/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * The origin of this IDL file is
+ * https://html.spec.whatwg.org/multipage/webappapis.html#the-promiserejectionevent-interface
+ */
+
+[Constructor(DOMString type, PromiseRejectionEventInit eventInitDict),
+ Exposed=(Window,Worker)]
+interface PromiseRejectionEvent : Event
+{
+  [BinaryName="rejectedPromise"]
+  readonly attribute Promise<any> promise;
+  readonly attribute any reason;
+};
+
+dictionary PromiseRejectionEventInit : EventInit {
+  required Promise<any> promise;
+           any reason;
+};
diff --git a/dom/webidl/moz.build b/dom/webidl/moz.build
index 0f47aabae4..c1f5ad1b76 100644
--- a/dom/webidl/moz.build
+++ b/dom/webidl/moz.build
@@ -695,6 +695,7 @@ GENERATED_EVENTS_WEBIDL_FILES = [
     'PopStateEvent.webidl',
     'PopupBlockedEvent.webidl',
     'ProgressEvent.webidl',
+    'PromiseRejectionEvent.webidl',
     'RecordErrorEvent.webidl',
     'ScrollViewChangeEvent.webidl',
     'ServiceWorkerMessageEvent.webidl',