From 9cdd0db13879cd806a3b0dece8550835328f3d41 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dawid=20Ma=C5=82ecki?= <maleckidawid@meta.com>
Date: Tue, 27 May 2025 03:10:14 -0700
Subject: [PATCH] Remove JSEventLoopWatchdog from react-native package (#51614)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/51614

`JSEventLoopWatchdog` is not used in react-native package. This diff moves it to rn-tester which previously deep imported it from react-native (which we want to avoid).

Changelog:
[Internal]

Reviewed By: huntie

Differential Revision: D75410548

fbshipit-source-id: d4996742578e3b068e7acad9479394388b1907ac
---
 .../__snapshots__/public-api-test.js.snap        | 16 ----------------
 .../js/utils}/JSEventLoopWatchdog.js             |  0
 packages/rn-tester/js/utils/useJsStalls.js       |  3 +--
 3 files changed, 1 insertion(+), 18 deletions(-)
 rename packages/{react-native/Libraries/Interaction => rn-tester/js/utils}/JSEventLoopWatchdog.js (100%)

diff --git a/packages/react-native/Libraries/__tests__/__snapshots__/public-api-test.js.snap b/packages/react-native/Libraries/__tests__/__snapshots__/public-api-test.js.snap
index 8ace056326d..b8d5903830c 100644
--- a/packages/react-native/Libraries/__tests__/__snapshots__/public-api-test.js.snap
+++ b/packages/react-native/Libraries/__tests__/__snapshots__/public-api-test.js.snap
@@ -4722,22 +4722,6 @@ declare export default typeof InteractionManagerStub;
 "
 `;
 
-exports[`public API should not change unintentionally Libraries/Interaction/JSEventLoopWatchdog.js 1`] = `
-"type Handler = {
-  onIterate?: () => void,
-  onStall: (params: { lastInterval: number, busyTime: number, ... }) => ?string,
-  ...
-};
-declare const JSEventLoopWatchdog: {
-  getStats: () => Object,
-  reset: () => void,
-  addHandler: (handler: Handler) => void,
-  install: ($$PARAM_0$$: { thresholdMS: number, ... }) => void,
-};
-declare export default typeof JSEventLoopWatchdog;
-"
-`;
-
 exports[`public API should not change unintentionally Libraries/Interaction/NativeFrameRateLogger.js 1`] = `
 "export * from \\"../../src/private/specs_DEPRECATED/modules/NativeFrameRateLogger\\";
 declare export default typeof NativeFrameRateLogger;
diff --git a/packages/react-native/Libraries/Interaction/JSEventLoopWatchdog.js b/packages/rn-tester/js/utils/JSEventLoopWatchdog.js
similarity index 100%
rename from packages/react-native/Libraries/Interaction/JSEventLoopWatchdog.js
rename to packages/rn-tester/js/utils/JSEventLoopWatchdog.js
diff --git a/packages/rn-tester/js/utils/useJsStalls.js b/packages/rn-tester/js/utils/useJsStalls.js
index a59dcc8c6cb..e56a7e9f480 100644
--- a/packages/rn-tester/js/utils/useJsStalls.js
+++ b/packages/rn-tester/js/utils/useJsStalls.js
@@ -56,8 +56,7 @@ const useJsStalls = (): ({
   }, []);
 
   const onEnableJsStallsTracking = useCallback(() => {
-    const JSEventLoopWatchdog =
-      require('react-native/Libraries/Interaction/JSEventLoopWatchdog').default;
+    const JSEventLoopWatchdog = require('./JSEventLoopWatchdog').default;
 
     JSEventLoopWatchdog.install({thresholdMS: 25});