From 535ef4c7bdaf9d8e11576288f027e7d94910b2d4 Mon Sep 17 00:00:00 2001
From: FlowUpgradeInFbsource Bot <noreply+1026736676487289@fb.com>
Date: Tue, 21 Jul 2026 07:15:39 -0700
Subject: [PATCH] Upgrade Flow in fbsource

Reviewed By: SamChou19815

Differential Revision: D112967104
---
 .../src/private/webapis/dom/abort-api/AbortController.js  | 1 +
 .../src/private/webapis/dom/abort-api/AbortSignal.js      | 2 ++
 .../react-native/src/private/webapis/dom/events/Event.js  | 8 ++++++++
 .../src/private/webapis/dom/events/EventTarget.js         | 3 +++
 .../src/private/webapis/dom/nodes/ReactNativeElement.js   | 1 +
 5 files changed, 15 insertions(+)

diff --git a/packages/react-native/src/private/webapis/dom/abort-api/AbortController.js b/packages/react-native/src/private/webapis/dom/abort-api/AbortController.js
index f093e25ee54e..4cd657e6c6ca 100644
--- a/packages/react-native/src/private/webapis/dom/abort-api/AbortController.js
+++ b/packages/react-native/src/private/webapis/dom/abort-api/AbortController.js
@@ -42,6 +42,7 @@ export class AbortController {
    * Initialize this controller.
    */
   // $FlowExpectedError[unsupported-syntax]
+  // $FlowFixMe[illegal-key]
   [SIGNAL_KEY]: AbortSignal;
 
   constructor() {
diff --git a/packages/react-native/src/private/webapis/dom/abort-api/AbortSignal.js b/packages/react-native/src/private/webapis/dom/abort-api/AbortSignal.js
index 9b0e42cd30db..e7fac1f26d7b 100644
--- a/packages/react-native/src/private/webapis/dom/abort-api/AbortSignal.js
+++ b/packages/react-native/src/private/webapis/dom/abort-api/AbortSignal.js
@@ -132,8 +132,10 @@ export class AbortSignal extends EventTarget {
   }
 
   // $FlowExpectedError[unsupported-syntax]
+  // $FlowFixMe[illegal-key]
   [ABORTED_KEY]: boolean = false;
   // $FlowExpectedError[unsupported-syntax]
+  // $FlowFixMe[illegal-key]
   [REASON_KEY]: unknown;
 
   /**
diff --git a/packages/react-native/src/private/webapis/dom/events/Event.js b/packages/react-native/src/private/webapis/dom/events/Event.js
index 4202d774c8aa..0a5a15e01e10 100644
--- a/packages/react-native/src/private/webapis/dom/events/Event.js
+++ b/packages/react-native/src/private/webapis/dom/events/Event.js
@@ -71,27 +71,35 @@ export default class Event {
   _timeStamp: number;
 
   // $FlowExpectedError[unsupported-syntax]
+  // $FlowFixMe[illegal-key]
   [COMPOSED_PATH_KEY]: boolean = [];
 
   // $FlowExpectedError[unsupported-syntax]
+  // $FlowFixMe[illegal-key]
   [CURRENT_TARGET_KEY]: EventTarget | null = null;
 
   // $FlowExpectedError[unsupported-syntax]
+  // $FlowFixMe[illegal-key]
   [EVENT_PHASE_KEY]: boolean = Event.NONE;
 
   // $FlowExpectedError[unsupported-syntax]
+  // $FlowFixMe[illegal-key]
   [IN_PASSIVE_LISTENER_FLAG_KEY]: boolean = false;
 
   // $FlowExpectedError[unsupported-syntax]
+  // $FlowFixMe[illegal-key]
   [IS_TRUSTED_KEY]: boolean = false;
 
   // $FlowExpectedError[unsupported-syntax]
+  // $FlowFixMe[illegal-key]
   [STOP_IMMEDIATE_PROPAGATION_FLAG_KEY]: boolean = false;
 
   // $FlowExpectedError[unsupported-syntax]
+  // $FlowFixMe[illegal-key]
   [STOP_PROPAGATION_FLAG_KEY]: boolean = false;
 
   // $FlowExpectedError[unsupported-syntax]
+  // $FlowFixMe[illegal-key]
   [TARGET_KEY]: EventTarget | null = null;
 
   constructor(type: string, options?: ?EventInit) {
diff --git a/packages/react-native/src/private/webapis/dom/events/EventTarget.js b/packages/react-native/src/private/webapis/dom/events/EventTarget.js
index 4d879810205a..936626aac150 100644
--- a/packages/react-native/src/private/webapis/dom/events/EventTarget.js
+++ b/packages/react-native/src/private/webapis/dom/events/EventTarget.js
@@ -224,6 +224,7 @@ export default class EventTarget {
    * which is `AT_TARGET` during both passes through the target node.
    */
   // $FlowExpectedError[unsupported-syntax]
+  // $FlowFixMe[illegal-key]
   [EVENT_TARGET_GET_DECLARATIVE_LISTENER_KEY](
     event: Event,
     isCapture: boolean,
@@ -239,6 +240,7 @@ export default class EventTarget {
    * (see https://dom.spec.whatwg.org/#get-the-parent).
    */
   // $FlowExpectedError[unsupported-syntax]
+  // $FlowFixMe[illegal-key]
   [EVENT_TARGET_GET_THE_PARENT_KEY](): EventTarget | null {
     return null;
   }
@@ -249,6 +251,7 @@ export default class EventTarget {
    * canceled (i.e. `event.defaultPrevented`), otherwise `true`.
    */
   // $FlowExpectedError[unsupported-syntax]
+  // $FlowFixMe[illegal-key]
   [INTERNAL_DISPATCH_METHOD_KEY](
     event: Event,
     rethrowListenerErrors?: boolean,
diff --git a/packages/react-native/src/private/webapis/dom/nodes/ReactNativeElement.js b/packages/react-native/src/private/webapis/dom/nodes/ReactNativeElement.js
index 9fef664f4004..0d2d66fef2d7 100644
--- a/packages/react-native/src/private/webapis/dom/nodes/ReactNativeElement.js
+++ b/packages/react-native/src/private/webapis/dom/nodes/ReactNativeElement.js
@@ -286,6 +286,7 @@ class ReactNativeElement extends ReadOnlyElement {
   // avoids the `getEventTypePropName(eventType, isCapture)` hash lookup per
   // ancestor per phase.
   // $FlowExpectedError[unsupported-syntax]
+  // $FlowFixMe[illegal-key]
   [EVENT_TARGET_GET_DECLARATIVE_LISTENER_KEY](
     event: Event,
     isCapture: boolean,