From 8492c5afad5002f072f3bd9eb18e8df326c90637 Mon Sep 17 00:00:00 2001
From: James M Snell <jasnell@gmail.com>
Date: Thu, 12 Sep 2024 14:25:54 -0700
Subject: [PATCH] Make EventSource extend EventTarget

Fixes: https://github.com/cloudflare/workerd/issues/2698
---
 src/workerd/api/eventsource.h             | 1 +
 src/workerd/api/tests/eventsource-test.js | 1 +
 2 files changed, 2 insertions(+)

diff --git a/src/workerd/api/eventsource.h b/src/workerd/api/eventsource.h
index e08726fb49d..931d41fa329 100644
--- a/src/workerd/api/eventsource.h
+++ b/src/workerd/api/eventsource.h
@@ -163,6 +163,7 @@ class EventSource: public EventTarget {
   }
 
   JSG_RESOURCE_TYPE(EventSource) {
+    JSG_INHERIT(EventTarget);
     JSG_METHOD(close);
     JSG_READONLY_PROTOTYPE_PROPERTY(url, getUrl);
     JSG_READONLY_PROTOTYPE_PROPERTY(withCredentials, getWithCredentials);
diff --git a/src/workerd/api/tests/eventsource-test.js b/src/workerd/api/tests/eventsource-test.js
index e92199c550a..cf614472721 100644
--- a/src/workerd/api/tests/eventsource-test.js
+++ b/src/workerd/api/tests/eventsource-test.js
@@ -9,6 +9,7 @@ export const acceptEventStreamTest = {
       'http://example.org/accept-event-stream',
       { fetcher: env.subrequest }
     );
+    ok(eventsource instanceof EventTarget);
     strictEqual(eventsource.readyState, EventSource.CONNECTING);
     const { promise, resolve } = Promise.withResolvers();
     let opened = false;