From f11b5a9c7c36c89411bf1d624abc0b2b2e15f506 Mon Sep 17 00:00:00 2001
From: Alex Hunt <huntie@meta.com>
Date: Tue, 22 Oct 2024 16:03:56 -0700
Subject: [PATCH] Configure unstable-react-profiling build mode (#47028)

Summary:

This is a mostly internal diff enabling us to selectively enable Fusebox in release builds (experimental).

Changelog: [Internal]

Differential Revision: D64110061
---
 packages/react-native/ReactAndroid/build.gradle.kts           | 1 +
 .../src/main/java/com/facebook/react/ReactNativeHost.java     | 4 +++-
 .../java/com/facebook/react/common/build/ReactBuildConfig.kt  | 4 ++++
 .../main/java/com/facebook/react/runtime/ReactHostImpl.java   | 2 +-
 .../ReactCommon/jsinspector-modern/InspectorFlags.cpp         | 2 ++
 5 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/packages/react-native/ReactAndroid/build.gradle.kts b/packages/react-native/ReactAndroid/build.gradle.kts
index 264bda8fce477c..4caae9d4d21a2b 100644
--- a/packages/react-native/ReactAndroid/build.gradle.kts
+++ b/packages/react-native/ReactAndroid/build.gradle.kts
@@ -495,6 +495,7 @@ android {
 
     buildConfigField("boolean", "IS_INTERNAL_BUILD", "false")
     buildConfigField("int", "EXOPACKAGE_FLAGS", "0")
+    buildConfigField("boolean", "UNSTABLE_ENABLE_FUSEBOX_RELEASE", "false")
 
     resValue("integer", "react_native_dev_server_port", reactNativeDevServerPort())
 
diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/ReactNativeHost.java b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/ReactNativeHost.java
index 332c7a6ddaee5e..039d3495da47c4 100644
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/ReactNativeHost.java
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/ReactNativeHost.java
@@ -19,6 +19,7 @@
 import com.facebook.react.common.SurfaceDelegate;
 import com.facebook.react.common.SurfaceDelegateFactory;
 import com.facebook.react.common.annotations.DeprecatedInNewArchitecture;
+import com.facebook.react.common.build.ReactBuildConfig;
 import com.facebook.react.devsupport.DevSupportManagerFactory;
 import com.facebook.react.devsupport.interfaces.DevLoadingViewManager;
 import com.facebook.react.devsupport.interfaces.PausedInDebuggerOverlayManager;
@@ -92,7 +93,8 @@ protected ReactInstanceManagerBuilder getBaseReactInstanceManagerBuilder() {
         ReactInstanceManager.builder()
             .setApplication(mApplication)
             .setJSMainModulePath(getJSMainModuleName())
-            .setUseDeveloperSupport(getUseDeveloperSupport())
+            .setUseDeveloperSupport(
+                getUseDeveloperSupport() || ReactBuildConfig.UNSTABLE_ENABLE_FUSEBOX_RELEASE)
             .setDevSupportManagerFactory(getDevSupportManagerFactory())
             .setDevLoadingViewManager(getDevLoadingViewManager())
             .setRequireActivity(getShouldRequireActivity())
diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/common/build/ReactBuildConfig.kt b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/common/build/ReactBuildConfig.kt
index e166d9a39fb4ea..a799b8618a9871 100644
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/common/build/ReactBuildConfig.kt
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/common/build/ReactBuildConfig.kt
@@ -23,4 +23,8 @@ public object ReactBuildConfig {
   @JvmField public val IS_INTERNAL_BUILD: Boolean = BuildConfig.IS_INTERNAL_BUILD
 
   @JvmField public val EXOPACKAGE_FLAGS: Int = BuildConfig.EXOPACKAGE_FLAGS
+
+  /** [Experimental] Enable React Native DevTools in release builds. */
+  @JvmField
+  public val UNSTABLE_ENABLE_FUSEBOX_RELEASE: Boolean = BuildConfig.UNSTABLE_ENABLE_FUSEBOX_RELEASE
 }
diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/runtime/ReactHostImpl.java b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/runtime/ReactHostImpl.java
index a5732d3c893c13..c284ad172bb9b8 100644
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/runtime/ReactHostImpl.java
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/runtime/ReactHostImpl.java
@@ -193,7 +193,7 @@ public ReactHostImpl(
     mUIExecutor = uiExecutor;
     mMemoryPressureRouter = new MemoryPressureRouter(context);
     mAllowPackagerServerAccess = allowPackagerServerAccess;
-    mUseDevSupport = useDevSupport;
+    mUseDevSupport = useDevSupport || ReactBuildConfig.UNSTABLE_ENABLE_FUSEBOX_RELEASE;
     if (devSupportManagerFactory == null) {
       devSupportManagerFactory = new DefaultDevSupportManagerFactory();
     }
diff --git a/packages/react-native/ReactCommon/jsinspector-modern/InspectorFlags.cpp b/packages/react-native/ReactCommon/jsinspector-modern/InspectorFlags.cpp
index d71944064e5964..df98c005ec499d 100644
--- a/packages/react-native/ReactCommon/jsinspector-modern/InspectorFlags.cpp
+++ b/packages/react-native/ReactCommon/jsinspector-modern/InspectorFlags.cpp
@@ -44,6 +44,8 @@ const InspectorFlags::Values& InspectorFlags::loadFlagsAndAssertUnchanged()
           true,
 #elif defined(HERMES_ENABLE_DEBUGGER)
           ReactNativeFeatureFlags::fuseboxEnabledDebug(),
+#elif defined(REACT_NATIVE_ENABLE_FUSEBOX_RELEASE)
+          true,
 #else
           ReactNativeFeatureFlags::fuseboxEnabledRelease(),
 #endif