From f65d7f4959b670da7f1170a00d1ef94bb88d2812 Mon Sep 17 00:00:00 2001
From: "Chang Liu (RL)" <cliu2@meta.com>
Date: Tue, 10 Jun 2025 10:55:32 -0700
Subject: [PATCH] Back out "(Redo PR #51264) Remove native animation fabric
 sync in JS and infinite animation loop workaround"

Summary:
Reverting for the same reason as D75108344.

Original commit changeset: 966e2b187f43

Original Phabricator Diff: D75789100

Reviewed By: zijunl

Differential Revision: D76352826
---
 .../Libraries/Animated/animations/Animation.js             | 7 ++-----
 .../src/private/animated/createAnimatedPropsHook.js        | 5 +----
 2 files changed, 3 insertions(+), 9 deletions(-)

diff --git a/packages/react-native/Libraries/Animated/animations/Animation.js b/packages/react-native/Libraries/Animated/animations/Animation.js
index 35f43245bf8047..6587e9189fd872 100644
--- a/packages/react-native/Libraries/Animated/animations/Animation.js
+++ b/packages/react-native/Libraries/Animated/animations/Animation.js
@@ -13,7 +13,6 @@ import type AnimatedNode from '../nodes/AnimatedNode';
 import type AnimatedValue from '../nodes/AnimatedValue';
 
 import NativeAnimatedHelper from '../../../src/private/animated/NativeAnimatedHelper';
-import * as ReactNativeFeatureFlags from '../../../src/private/featureflags/ReactNativeFeatureFlags';
 import AnimatedProps from '../nodes/AnimatedProps';
 
 export type EndResult = {
@@ -150,10 +149,8 @@ export default class Animation {
           if (value != null) {
             animatedValue.__onAnimatedValueUpdateReceived(value, offset);
 
-            if (!ReactNativeFeatureFlags.cxxNativeAnimatedEnabled()) {
-              if (this.__isLooping === true) {
-                return;
-              }
+            if (this.__isLooping === true) {
+              return;
             }
 
             // Once the JS side node is synced with the updated values, trigger an
diff --git a/packages/react-native/src/private/animated/createAnimatedPropsHook.js b/packages/react-native/src/private/animated/createAnimatedPropsHook.js
index 4f76a4fb4cdd4a..444ec9eb8e9a65 100644
--- a/packages/react-native/src/private/animated/createAnimatedPropsHook.js
+++ b/packages/react-native/src/private/animated/createAnimatedPropsHook.js
@@ -132,10 +132,7 @@ export default function createAnimatedPropsHook(
           if (node.__isNative) {
             // Check 2: this is an animation driven by native.
             // In native driven animations, this callback is only called once the animation completes.
-            if (
-              isFabricNode &&
-              !ReactNativeFeatureFlags.cxxNativeAnimatedEnabled()
-            ) {
+            if (isFabricNode) {
               // Call `scheduleUpdate` to synchronise Fiber and Shadow tree.
               // Must not be called in Paper.
               scheduleUpdate();