From 38a7c5cd121f13fb3c58944f293b4512d3c39863 Mon Sep 17 00:00:00 2001
From: Luigi Pinca <luigipinca@gmail.com>
Date: Thu, 15 Jul 2021 09:33:06 +0200
Subject: [PATCH] events: reset the event target to null

Allow an event to be dispatched multiple times by resetting the event
target to `null` when dispatch is complete.
---
 lib/internal/event_target.js      |  2 +-
 test/parallel/test-eventtarget.js | 21 +++++++++++++++++++++
 2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/lib/internal/event_target.js b/lib/internal/event_target.js
index 825e1e8b2597ab..0010d3987e2992 100644
--- a/lib/internal/event_target.js
+++ b/lib/internal/event_target.js
@@ -464,7 +464,7 @@ class EventTarget {
     }
 
     if (event !== undefined)
-      event[kTarget] = undefined;
+      event[kTarget] = null;
   }
 
   [kCreateEvent](nodeValue, type) {
diff --git a/test/parallel/test-eventtarget.js b/test/parallel/test-eventtarget.js
index a85e2cd7f1b9f9..87c6eabe521b69 100644
--- a/test/parallel/test-eventtarget.js
+++ b/test/parallel/test-eventtarget.js
@@ -162,6 +162,27 @@ let asyncTest = Promise.resolve();
   eventTarget.dispatchEvent(ev);
 }
 
+{
+  // Same event dispatched multiple times.
+  const event = new Event('foo');
+  const eventTarget1 = new EventTarget();
+  const eventTarget2 = new EventTarget();
+
+  eventTarget1.addEventListener('foo', common.mustCall((event) => {
+    strictEqual(event.target, eventTarget1);
+  }));
+
+  eventTarget2.addEventListener('foo', common.mustCall((event) => {
+    strictEqual(event.target, eventTarget2);
+  }));
+
+  eventTarget1.dispatchEvent(event);
+  strictEqual(event.target, null);
+
+  eventTarget2.dispatchEvent(event);
+  strictEqual(event.target, null);
+}
+
 {
   const eventTarget = new EventTarget();
   const event = new Event('foo', { cancelable: true });