From 35946ef266c413a92db530ee282a749293ebef93 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rub=C3=A9n=20Norte?= <rubennorte@meta.com>
Date: Tue, 4 Jun 2024 16:21:44 -0700
Subject: [PATCH] Re-enable event loop in OSS (#44788)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/44788

We disabled the event loop in RN on the main branch after we found some issues in the implementation. Those have been resolved already so we can re-enable it again.

For context, it's already enabled in the latest branch so this is just for main.

Changelog: [internal]

Reviewed By: cortinico

Differential Revision: D58146393

fbshipit-source-id: ab908ecbd507d7087137a36cad5cc917eb7b1311
---
 .../Libraries/AppDelegate/RCTAppDelegate.mm      | 16 +++++++++++++++-
 .../defaults/DefaultNewArchitectureEntryPoint.kt |  8 +++++++-
 2 files changed, 22 insertions(+), 2 deletions(-)

diff --git a/packages/react-native/Libraries/AppDelegate/RCTAppDelegate.mm b/packages/react-native/Libraries/AppDelegate/RCTAppDelegate.mm
index da4f793c6cd0b4..1a93e7d409bc41 100644
--- a/packages/react-native/Libraries/AppDelegate/RCTAppDelegate.mm
+++ b/packages/react-native/Libraries/AppDelegate/RCTAppDelegate.mm
@@ -297,7 +297,21 @@ - (RCTRootViewFactory *)createRCTRootViewFactory
 
 #pragma mark - Feature Flags
 
-class RCTAppDelegateBridgelessFeatureFlags : public facebook::react::ReactNativeFeatureFlagsDefaults {};
+class RCTAppDelegateBridgelessFeatureFlags : public facebook::react::ReactNativeFeatureFlagsDefaults {
+ public:
+  bool useModernRuntimeScheduler() override
+  {
+    return true;
+  }
+  bool enableMicrotasks() override
+  {
+    return true;
+  }
+  bool batchRenderingUpdatesInEventLoop() override
+  {
+    return true;
+  }
+};
 
 - (void)_setUpFeatureFlags
 {
diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/defaults/DefaultNewArchitectureEntryPoint.kt b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/defaults/DefaultNewArchitectureEntryPoint.kt
index 553c4f75f5bb13..ceabbe7392ab5b 100644
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/defaults/DefaultNewArchitectureEntryPoint.kt
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/defaults/DefaultNewArchitectureEntryPoint.kt
@@ -48,7 +48,13 @@ public object DefaultNewArchitectureEntryPoint {
     if (bridgelessEnabled) {
       ReactNativeFeatureFlags.override(
           object : ReactNativeFeatureFlagsDefaults() {
-            override fun useNativeViewConfigsInBridgelessMode(): Boolean = fabricEnabled
+            override fun useModernRuntimeScheduler(): Boolean = true
+
+            override fun enableMicrotasks(): Boolean = true
+
+            override fun batchRenderingUpdatesInEventLoop(): Boolean = true
+
+            override fun useNativeViewConfigsInBridgelessMode(): Boolean = true
           })
     }