From 7fdc27d6015206854fa6c22bf44bb7a143b1838b Mon Sep 17 00:00:00 2001
From: Deokjin Kim <deokjin81.kim@gmail.com>
Date: Tue, 3 Jan 2023 11:00:56 +0900
Subject: [PATCH 1/5] events: add `initEvent` to Event

Refs: https://dom.spec.whatwg.org/#dom-event-initevent
---
 doc/api/events.md               | 15 +++++++++++++++
 lib/internal/event_target.js    | 18 ++++++++++++++++++
 test/wpt/status/dom/events.json |  8 --------
 3 files changed, 33 insertions(+), 8 deletions(-)

diff --git a/doc/api/events.md b/doc/api/events.md
index 93086ca36807fc..ed0793b27debe7 100644
--- a/doc/api/events.md
+++ b/doc/api/events.md
@@ -1819,6 +1819,21 @@ added: v14.5.0
 
 This is not used in Node.js and is provided purely for completeness.
 
+#### `event.initEvent(type[, bubbles, cancelable])`
+
+<!-- YAML
+added: REPLACEME
+-->
+
+> Stability: 3 - Legacy
+
+* `type` {string}
+* `bubbles` {boolean}
+* `cancelable` {boolean}
+
+Redundant with event constructors and incapable of setting `composed`.
+This is not used in Node.js and is provided purely for completeness.
+
 #### `event.isTrusted`
 
 <!-- YAML
diff --git a/lib/internal/event_target.js b/lib/internal/event_target.js
index dac962e1a3b07e..f8d50ce2a4073a 100644
--- a/lib/internal/event_target.js
+++ b/lib/internal/event_target.js
@@ -123,6 +123,23 @@ class Event {
     this[kIsBeingDispatched] = false;
   }
 
+  /**
+   * @param {string} type
+   * @param {boolean} [bubbles]
+   * @param {boolean} [cancelable]
+   */
+  initEvent(type, bubbles = false, cancelable = false) {
+    if (arguments.length === 0)
+      throw new ERR_MISSING_ARGS('type');
+
+    if (this[kIsBeingDispatched]) {
+      return;
+    }
+    this[kType] = `${type}`;
+    this.#bubbles = !!bubbles;
+    this.#cancelable = !!cancelable;
+  }
+
   [customInspectSymbol](depth, options) {
     if (!isEvent(this))
       throw new ERR_INVALID_THIS('Event');
@@ -307,6 +324,7 @@ ObjectDefineProperties(
       configurable: true,
       value: 'Event',
     },
+    initEvent: kEnumerableProperty,
     stopImmediatePropagation: kEnumerableProperty,
     preventDefault: kEnumerableProperty,
     target: kEnumerableProperty,
diff --git a/test/wpt/status/dom/events.json b/test/wpt/status/dom/events.json
index 7d4309ffcf1612..90825d76a358d6 100644
--- a/test/wpt/status/dom/events.json
+++ b/test/wpt/status/dom/events.json
@@ -8,14 +8,6 @@
       ]
     }
   },
-  "Event-constructors.any.js": {
-    "fail": {
-      "expected": [
-        "Untitled 3",
-        "Untitled 4"
-      ]
-    }
-  },
   "Event-dispatch-listener-order.window.js": {
     "skip": "document is not defined"
   },

From c0df63b25114d9bef4d80f131dd2e7012d700c43 Mon Sep 17 00:00:00 2001
From: Deokjin Kim <deokjin81.kim@gmail.com>
Date: Mon, 16 Jan 2023 09:32:43 +0900
Subject: [PATCH 2/5] update description to clarify status of the WHATWG spec

---
 doc/api/events.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/doc/api/events.md b/doc/api/events.md
index ed0793b27debe7..028996321edb72 100644
--- a/doc/api/events.md
+++ b/doc/api/events.md
@@ -1833,6 +1833,7 @@ added: REPLACEME
 
 Redundant with event constructors and incapable of setting `composed`.
 This is not used in Node.js and is provided purely for completeness.
+The WHATWG spec considers it deprecated and users shouldn't use it at all.
 
 #### `event.isTrusted`
 

From daef80c79f26340493e3f6a59e66d8a03ce25645 Mon Sep 17 00:00:00 2001
From: Deokjin Kim <deokjin81.kim@gmail.com>
Date: Mon, 16 Jan 2023 18:52:03 +0900
Subject: [PATCH 3/5] move sentence describing status of the WHATWG spec to
 legacy banner

---
 doc/api/events.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/doc/api/events.md b/doc/api/events.md
index 028996321edb72..d5d290b451df49 100644
--- a/doc/api/events.md
+++ b/doc/api/events.md
@@ -1825,7 +1825,8 @@ This is not used in Node.js and is provided purely for completeness.
 added: REPLACEME
 -->
 
-> Stability: 3 - Legacy
+> Stability: 3 - Legacy: The WHATWG spec considers it deprecated and users
+shouldn't use it at all.
 
 * `type` {string}
 * `bubbles` {boolean}
@@ -1833,7 +1834,6 @@ added: REPLACEME
 
 Redundant with event constructors and incapable of setting `composed`.
 This is not used in Node.js and is provided purely for completeness.
-The WHATWG spec considers it deprecated and users shouldn't use it at all.
 
 #### `event.isTrusted`
 

From c951aeaf6665647a29175255cb89deaa5f60b1a5 Mon Sep 17 00:00:00 2001
From: Deokjin Kim <deokjin81.kim@gmail.com>
Date: Mon, 16 Jan 2023 19:00:07 +0900
Subject: [PATCH 4/5] fix legacy banner by adding `>` symbol

Co-authored-by: Antoine du Hamel <duhamelantoine1995@gmail.com>
---
 doc/api/events.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/doc/api/events.md b/doc/api/events.md
index d5d290b451df49..acbcf82050c81e 100644
--- a/doc/api/events.md
+++ b/doc/api/events.md
@@ -1826,7 +1826,7 @@ added: REPLACEME
 -->
 
 > Stability: 3 - Legacy: The WHATWG spec considers it deprecated and users
-shouldn't use it at all.
+> shouldn't use it at all.
 
 * `type` {string}
 * `bubbles` {boolean}

From 0db45a6eaee4f7c89299d1ef4584a0fb4983b788 Mon Sep 17 00:00:00 2001
From: Deokjin Kim <deokjin81.kim@gmail.com>
Date: Mon, 16 Jan 2023 19:16:51 +0900
Subject: [PATCH 5/5] fix options by adding nested option

Co-authored-by: Antoine du Hamel <duhamelantoine1995@gmail.com>
---
 doc/api/events.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/doc/api/events.md b/doc/api/events.md
index acbcf82050c81e..6307dcb3208786 100644
--- a/doc/api/events.md
+++ b/doc/api/events.md
@@ -1819,7 +1819,7 @@ added: v14.5.0
 
 This is not used in Node.js and is provided purely for completeness.
 
-#### `event.initEvent(type[, bubbles, cancelable])`
+#### `event.initEvent(type[, bubbles[, cancelable]])`
 
 <!-- YAML
 added: REPLACEME