From 7a8144c4accde5866119873b85aa86262f070fc7 Mon Sep 17 00:00:00 2001
From: Richie Bendall <richiebendall@gmail.com>
Date: Wed, 2 Jul 2025 03:32:25 +1200
Subject: [PATCH 1/3] lib: expose global ErrorEvent

---
 doc/api/globals.md                                     | 8 ++++++++
 lib/eslint.config_partial.mjs                          | 4 ++++
 lib/internal/bootstrap/web/exposed-window-or-worker.js | 2 +-
 test/common/globals.js                                 | 1 +
 test/eslint.config_partial.mjs                         | 1 +
 5 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/doc/api/globals.md b/doc/api/globals.md
index f33c4b28606bc4..88dd6b4ffa2776 100644
--- a/doc/api/globals.md
+++ b/doc/api/globals.md
@@ -454,6 +454,14 @@ changes:
 
 A browser-compatible implementation of [`DecompressionStream`][].
 
+## `ErrorEvent`
+
+<!-- YAML
+added: REPLACEME
+-->
+
+A browser-compatible implementation of {ErrorEvent}.
+
 ## Class: `Event`
 
 <!-- YAML
diff --git a/lib/eslint.config_partial.mjs b/lib/eslint.config_partial.mjs
index fce886bbc936fb..305b2b365a6bf6 100644
--- a/lib/eslint.config_partial.mjs
+++ b/lib/eslint.config_partial.mjs
@@ -108,6 +108,10 @@ export default [
           name: 'DOMException',
           message: "Use lazy function `const { lazyDOMExceptionClass } = require('internal/util');` instead of the global.",
         },
+        {
+          name: 'ErrorEvent',
+          message: "Use `const { ErrorEvent } = require('internal/deps/undici/undici');` instead of the global.",
+        },
         {
           name: 'Event',
           message: "Use `const { Event } = require('internal/event_target');` instead of the global.",
diff --git a/lib/internal/bootstrap/web/exposed-window-or-worker.js b/lib/internal/bootstrap/web/exposed-window-or-worker.js
index f86efb261f0c9d..b138275e92bd4d 100644
--- a/lib/internal/bootstrap/web/exposed-window-or-worker.js
+++ b/lib/internal/bootstrap/web/exposed-window-or-worker.js
@@ -89,7 +89,7 @@ ObjectDefineProperty(globalThis, 'fetch', {
 // https://fetch.spec.whatwg.org/#request-class
 // https://fetch.spec.whatwg.org/#response-class
 exposeLazyInterfaces(globalThis, 'internal/deps/undici/undici', [
-  'FormData', 'Headers', 'Request', 'Response', 'MessageEvent', 'CloseEvent',
+  'FormData', 'Headers', 'Request', 'Response', 'MessageEvent', 'CloseEvent', 'ErrorEvent',
 ]);
 
 // https://html.spec.whatwg.org/multipage/server-sent-events.html#server-sent-events.org/
diff --git a/test/common/globals.js b/test/common/globals.js
index 1641c4df36b92d..0f637ad53f70c9 100644
--- a/test/common/globals.js
+++ b/test/common/globals.js
@@ -132,6 +132,7 @@ const webIdlExposedWindow = new Set([
   'WebSocket',
   'EventSource',
   'CloseEvent',
+  'ErrorEvent',
 ]);
 
 const nodeGlobals = new Set([
diff --git a/test/eslint.config_partial.mjs b/test/eslint.config_partial.mjs
index 418b2d0c3c8fdc..5c157486f6c7dc 100644
--- a/test/eslint.config_partial.mjs
+++ b/test/eslint.config_partial.mjs
@@ -12,6 +12,7 @@ export default [
       globals: {
         ...globals.node,
         CloseEvent: true,
+        ErrorEvent: true,
       },
     },
     rules: {

From a76297b7105df705adda4127c1e8d7e71cef04a9 Mon Sep 17 00:00:00 2001
From: Richie Bendall <richiebendall@gmail.com>
Date: Sun, 6 Jul 2025 08:10:18 +1200
Subject: [PATCH 2/3] Update type-parser.mjs

---
 tools/doc/type-parser.mjs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/doc/type-parser.mjs b/tools/doc/type-parser.mjs
index 1a54eb29d15f27..313c2e32ff8506 100644
--- a/tools/doc/type-parser.mjs
+++ b/tools/doc/type-parser.mjs
@@ -139,6 +139,8 @@ const customTypesMap = {
   'CustomEvent': 'events.html#class-customevent',
   'EventListener': 'events.html#event-listener',
 
+  'ErrorEvent': `${mdnPrefix}/API/ErrorEvent`,
+
   'CloseEvent': `${mdnPrefix}/API/CloseEvent`,
   'EventSource': `${mdnPrefix}/API/EventSource`,
   'MessageEvent': `${mdnPrefix}/API/MessageEvent`,

From 4edeb85e4977f50a120bfd6b42e4755ed966a575 Mon Sep 17 00:00:00 2001
From: Richie Bendall <richiebendall@gmail.com>
Date: Mon, 7 Jul 2025 23:49:59 +1200
Subject: [PATCH 3/3] Update tools/doc/type-parser.mjs

Co-authored-by: Antoine du Hamel <duhamelantoine1995@gmail.com>
---
 tools/doc/type-parser.mjs | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/tools/doc/type-parser.mjs b/tools/doc/type-parser.mjs
index 313c2e32ff8506..e61be15499365e 100644
--- a/tools/doc/type-parser.mjs
+++ b/tools/doc/type-parser.mjs
@@ -139,9 +139,8 @@ const customTypesMap = {
   'CustomEvent': 'events.html#class-customevent',
   'EventListener': 'events.html#event-listener',
 
-  'ErrorEvent': `${mdnPrefix}/API/ErrorEvent`,
-
   'CloseEvent': `${mdnPrefix}/API/CloseEvent`,
+  'ErrorEvent': `${mdnPrefix}/API/ErrorEvent`,
   'EventSource': `${mdnPrefix}/API/EventSource`,
   'MessageEvent': `${mdnPrefix}/API/MessageEvent`,