From 979c98a3cb92c6e1901b2eefc3cd72fe2a3e56de Mon Sep 17 00:00:00 2001
From: James M Snell <jasnell@gmail.com>
Date: Sun, 28 Nov 2021 12:57:58 -0800
Subject: [PATCH] events: propagate abortsignal reason in new AbortError ctor
 in events

Signed-off-by: James M Snell <jasnell@gmail.com>

PR-URL: https://github.com/nodejs/node/pull/41008
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Robert Nagy <ronagy@icloud.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
---
 lib/events.js | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/lib/events.js b/lib/events.js
index b79c8a36cdc012..7abf18f42c0064 100644
--- a/lib/events.js
+++ b/lib/events.js
@@ -928,7 +928,7 @@ async function once(emitter, name, options = kEmptyObject) {
   const signal = options?.signal;
   validateAbortSignal(signal, 'options.signal');
   if (signal?.aborted)
-    throw new AbortError();
+    throw new AbortError(undefined, { cause: signal?.reason });
   return new Promise((resolve, reject) => {
     const errorListener = (err) => {
       emitter.removeListener(name, resolver);
@@ -955,7 +955,7 @@ async function once(emitter, name, options = kEmptyObject) {
     function abortListener() {
       eventTargetAgnosticRemoveListener(emitter, name, resolver);
       eventTargetAgnosticRemoveListener(emitter, 'error', errorListener);
-      reject(new AbortError());
+      reject(new AbortError(undefined, { cause: signal?.reason }));
     }
     if (signal != null) {
       eventTargetAgnosticAddListener(
@@ -1006,7 +1006,7 @@ function on(emitter, event, options) {
   const signal = options?.signal;
   validateAbortSignal(signal, 'options.signal');
   if (signal?.aborted)
-    throw new AbortError();
+    throw new AbortError(undefined, { cause: signal?.reason });
 
   const unconsumedEvents = [];
   const unconsumedPromises = [];
@@ -1094,7 +1094,7 @@ function on(emitter, event, options) {
   return iterator;
 
   function abortListener() {
-    errorHandler(new AbortError());
+    errorHandler(new AbortError(undefined, { cause: signal?.reason }));
   }
 
   function eventHandler(...args) {