diff --git a/baselines/dom.generated.d.ts b/baselines/dom.generated.d.ts
index f543d0f63..2140495e2 100644
--- a/baselines/dom.generated.d.ts
+++ b/baselines/dom.generated.d.ts
@@ -17222,7 +17222,7 @@ interface GlobalEventHandlersEventMap {
     "change": Event;
     "click": PointerEvent;
     "close": Event;
-    "command": Event;
+    "command": CommandEvent;
     "compositionend": CompositionEvent;
     "compositionstart": CompositionEvent;
     "compositionupdate": CompositionEvent;
@@ -17348,7 +17348,7 @@ interface GlobalEventHandlers {
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLDialogElement/close_event) */
     onclose: ((this: GlobalEventHandlers, ev: Event) => any) | null;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLElement/command_event) */
-    oncommand: ((this: GlobalEventHandlers, ev: Event) => any) | null;
+    oncommand: ((this: GlobalEventHandlers, ev: CommandEvent) => any) | null;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLCanvasElement/contextlost_event) */
     oncontextlost: ((this: GlobalEventHandlers, ev: Event) => any) | null;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/Element/contextmenu_event) */
@@ -44734,7 +44734,7 @@ declare var onclick: ((this: Window, ev: PointerEvent) => any) | null;
 /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLDialogElement/close_event) */
 declare var onclose: ((this: Window, ev: Event) => any) | null;
 /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLElement/command_event) */
-declare var oncommand: ((this: Window, ev: Event) => any) | null;
+declare var oncommand: ((this: Window, ev: CommandEvent) => any) | null;
 /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLCanvasElement/contextlost_event) */
 declare var oncontextlost: ((this: Window, ev: Event) => any) | null;
 /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/Element/contextmenu_event) */
diff --git a/baselines/ts5.5/dom.generated.d.ts b/baselines/ts5.5/dom.generated.d.ts
index 2594d311f..45ec977fd 100644
--- a/baselines/ts5.5/dom.generated.d.ts
+++ b/baselines/ts5.5/dom.generated.d.ts
@@ -17208,7 +17208,7 @@ interface GlobalEventHandlersEventMap {
     "change": Event;
     "click": PointerEvent;
     "close": Event;
-    "command": Event;
+    "command": CommandEvent;
     "compositionend": CompositionEvent;
     "compositionstart": CompositionEvent;
     "compositionupdate": CompositionEvent;
@@ -17334,7 +17334,7 @@ interface GlobalEventHandlers {
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLDialogElement/close_event) */
     onclose: ((this: GlobalEventHandlers, ev: Event) => any) | null;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLElement/command_event) */
-    oncommand: ((this: GlobalEventHandlers, ev: Event) => any) | null;
+    oncommand: ((this: GlobalEventHandlers, ev: CommandEvent) => any) | null;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLCanvasElement/contextlost_event) */
     oncontextlost: ((this: GlobalEventHandlers, ev: Event) => any) | null;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/Element/contextmenu_event) */
@@ -44708,7 +44708,7 @@ declare var onclick: ((this: Window, ev: PointerEvent) => any) | null;
 /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLDialogElement/close_event) */
 declare var onclose: ((this: Window, ev: Event) => any) | null;
 /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLElement/command_event) */
-declare var oncommand: ((this: Window, ev: Event) => any) | null;
+declare var oncommand: ((this: Window, ev: CommandEvent) => any) | null;
 /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLCanvasElement/contextlost_event) */
 declare var oncontextlost: ((this: Window, ev: Event) => any) | null;
 /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/Element/contextmenu_event) */
diff --git a/baselines/ts5.6/dom.generated.d.ts b/baselines/ts5.6/dom.generated.d.ts
index a9f3c2fc4..aca3db87f 100644
--- a/baselines/ts5.6/dom.generated.d.ts
+++ b/baselines/ts5.6/dom.generated.d.ts
@@ -17219,7 +17219,7 @@ interface GlobalEventHandlersEventMap {
     "change": Event;
     "click": PointerEvent;
     "close": Event;
-    "command": Event;
+    "command": CommandEvent;
     "compositionend": CompositionEvent;
     "compositionstart": CompositionEvent;
     "compositionupdate": CompositionEvent;
@@ -17345,7 +17345,7 @@ interface GlobalEventHandlers {
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLDialogElement/close_event) */
     onclose: ((this: GlobalEventHandlers, ev: Event) => any) | null;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLElement/command_event) */
-    oncommand: ((this: GlobalEventHandlers, ev: Event) => any) | null;
+    oncommand: ((this: GlobalEventHandlers, ev: CommandEvent) => any) | null;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLCanvasElement/contextlost_event) */
     oncontextlost: ((this: GlobalEventHandlers, ev: Event) => any) | null;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/Element/contextmenu_event) */
@@ -44731,7 +44731,7 @@ declare var onclick: ((this: Window, ev: PointerEvent) => any) | null;
 /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLDialogElement/close_event) */
 declare var onclose: ((this: Window, ev: Event) => any) | null;
 /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLElement/command_event) */
-declare var oncommand: ((this: Window, ev: Event) => any) | null;
+declare var oncommand: ((this: Window, ev: CommandEvent) => any) | null;
 /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLCanvasElement/contextlost_event) */
 declare var oncontextlost: ((this: Window, ev: Event) => any) | null;
 /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/Element/contextmenu_event) */
diff --git a/baselines/ts5.9/dom.generated.d.ts b/baselines/ts5.9/dom.generated.d.ts
index 83e861452..b0dba0280 100644
--- a/baselines/ts5.9/dom.generated.d.ts
+++ b/baselines/ts5.9/dom.generated.d.ts
@@ -17219,7 +17219,7 @@ interface GlobalEventHandlersEventMap {
     "change": Event;
     "click": PointerEvent;
     "close": Event;
-    "command": Event;
+    "command": CommandEvent;
     "compositionend": CompositionEvent;
     "compositionstart": CompositionEvent;
     "compositionupdate": CompositionEvent;
@@ -17345,7 +17345,7 @@ interface GlobalEventHandlers {
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLDialogElement/close_event) */
     onclose: ((this: GlobalEventHandlers, ev: Event) => any) | null;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLElement/command_event) */
-    oncommand: ((this: GlobalEventHandlers, ev: Event) => any) | null;
+    oncommand: ((this: GlobalEventHandlers, ev: CommandEvent) => any) | null;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLCanvasElement/contextlost_event) */
     oncontextlost: ((this: GlobalEventHandlers, ev: Event) => any) | null;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/Element/contextmenu_event) */
@@ -44731,7 +44731,7 @@ declare var onclick: ((this: Window, ev: PointerEvent) => any) | null;
 /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLDialogElement/close_event) */
 declare var onclose: ((this: Window, ev: Event) => any) | null;
 /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLElement/command_event) */
-declare var oncommand: ((this: Window, ev: Event) => any) | null;
+declare var oncommand: ((this: Window, ev: CommandEvent) => any) | null;
 /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLCanvasElement/contextlost_event) */
 declare var oncontextlost: ((this: Window, ev: Event) => any) | null;
 /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/Element/contextmenu_event) */
diff --git a/inputfiles/patches/events.kdl b/inputfiles/patches/events.kdl
index 4d11ba797..9081bbf22 100644
--- a/inputfiles/patches/events.kdl
+++ b/inputfiles/patches/events.kdl
@@ -17,6 +17,7 @@ interface-mixin GlobalEventHandlers {
   event beforetoggle type=ToggleEvent
   event blur type=FocusEvent
   event click type=PointerEvent
+  event command type=CommandEvent
   event compositionend type=CompositionEvent
   event compositionstart type=CompositionEvent
   event compositionupdate type=CompositionEvent
diff --git a/unittests/files/command-event.ts b/unittests/files/command-event.ts
new file mode 100644
index 000000000..89e8b48d5
--- /dev/null
+++ b/unittests/files/command-event.ts
@@ -0,0 +1,35 @@
+document.body.addEventListener("command", (event) => {
+  const commandEvent: CommandEvent = event;
+  const command: string = event.command;
+  const source: Element | null = event.source;
+});
+
+document.body.oncommand = (event) => {
+  const commandEvent: CommandEvent = event;
+  const command: string = event.command;
+};
+
+document.addEventListener("command", (event) => {
+  const commandEvent: CommandEvent = event;
+  const command: string = event.command;
+});
+
+window.oncommand = (event) => {
+  const commandEvent: CommandEvent = event;
+  const command: string = event.command;
+};
+
+oncommand = (event) => {
+  const commandEvent: CommandEvent = event;
+  const command: string = event.command;
+};
+
+window.addEventListener("command", (event) => {
+  const commandEvent: CommandEvent = event;
+  const source: Element | null = event.source;
+});
+
+addEventListener("command", (event) => {
+  const commandEvent: CommandEvent = event;
+  const command: string = event.command;
+});