From d9b8e07b0065db8371e849dcc5137aeb36a97e5a Mon Sep 17 00:00:00 2001
From: Luna Wei <luwe@fb.com>
Date: Tue, 5 Jul 2022 13:03:11 -0700
Subject: [PATCH] Add offsetX, offsetY to MouseEvent

Summary: Changelog: [Internal] - Adding offsetX, offsetY to MouseEvent interface. It's currently provided in a draft form: https://drafts.csswg.org/cssom-view/#extensions-to-the-mouseevent-interface

Reviewed By: vincentriemer

Differential Revision: D37436051

fbshipit-source-id: b3bb85acb82db348d3e1085881232e5358674ed7
---
 Libraries/Types/CoreEventTypes.js | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Libraries/Types/CoreEventTypes.js b/Libraries/Types/CoreEventTypes.js
index a62ddb058b0bfc..8664bce98ed242 100644
--- a/Libraries/Types/CoreEventTypes.js
+++ b/Libraries/Types/CoreEventTypes.js
@@ -157,6 +157,15 @@ export interface NativeMouseEvent extends NativeUIEvent {
    * The secondary target for the event, if there is one.
    */
   +relatedTarget: null | number | React.ElementRef<HostComponent<mixed>>;
+  // offset is proposed: https://drafts.csswg.org/cssom-view/#extensions-to-the-mouseevent-interface
+  /**
+   * The X coordinate of the mouse pointer between that event and the padding edge of the target node
+   */
+  +offsetX: number;
+  /**
+   * The Y coordinate of the mouse pointer between that event and the padding edge of the target node
+   */
+  +offsetY: number;
 }
 
 /**