From d855974daea47b334147ddac0adee7e74b7db4db Mon Sep 17 00:00:00 2001
From: Alex Hunt <huntie@meta.com>
Date: Wed, 3 Apr 2024 08:07:39 -0700
Subject: [PATCH] Set prefersFuseboxFrontend capability flag in
 jsinspector-modern targets (#43689)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/43689

Context: https://github.com/facebookexperimental/rn-chrome-devtools-frontend/pull/34.

Changelog: [Internal]

Reviewed By: motiz88

Differential Revision: D55474521

fbshipit-source-id: 9756fe29adcbdda686af24c1a65073720cba4b53
---
 packages/react-native/React/Base/RCTBridge.mm                | 2 +-
 .../jni/react/jni/ReactInstanceManagerInspectorTarget.cpp    | 2 +-
 .../main/jni/react/runtime/jni/JReactHostInspectorTarget.cpp | 2 +-
 .../ReactCommon/jsinspector-modern/InspectorInterfaces.cpp   | 3 ++-
 .../ReactCommon/jsinspector-modern/InspectorInterfaces.h     | 5 +++--
 .../react/runtime/platform/ios/ReactCommon/RCTHost.mm        | 2 +-
 6 files changed, 9 insertions(+), 7 deletions(-)

diff --git a/packages/react-native/React/Base/RCTBridge.mm b/packages/react-native/React/Base/RCTBridge.mm
index 0a5e8a6dc89..5ffcb25d887 100644
--- a/packages/react-native/React/Base/RCTBridge.mm
+++ b/packages/react-native/React/Base/RCTBridge.mm
@@ -436,7 +436,7 @@ RCT_NOT_IMPLEMENTED(-(instancetype)init)
                   .integrationName = "iOS Bridge (RCTBridge)",
               });
         },
-        {.nativePageReloads = true});
+        {.nativePageReloads = true, .prefersFuseboxFrontend = true});
   }
 
   Class bridgeClass = self.bridgeClass;
diff --git a/packages/react-native/ReactAndroid/src/main/jni/react/jni/ReactInstanceManagerInspectorTarget.cpp b/packages/react-native/ReactAndroid/src/main/jni/react/jni/ReactInstanceManagerInspectorTarget.cpp
index 52e1b879593..aba0a4335ad 100644
--- a/packages/react-native/ReactAndroid/src/main/jni/react/jni/ReactInstanceManagerInspectorTarget.cpp
+++ b/packages/react-native/ReactAndroid/src/main/jni/react/jni/ReactInstanceManagerInspectorTarget.cpp
@@ -50,7 +50,7 @@ ReactInstanceManagerInspectorTarget::ReactInstanceManagerInspectorTarget(
                       "Android Bridge (ReactInstanceManagerInspectorTarget)",
               });
         },
-        {.nativePageReloads = true});
+        {.nativePageReloads = true, .prefersFuseboxFrontend = true});
   }
 }
 
diff --git a/packages/react-native/ReactAndroid/src/main/jni/react/runtime/jni/JReactHostInspectorTarget.cpp b/packages/react-native/ReactAndroid/src/main/jni/react/runtime/jni/JReactHostInspectorTarget.cpp
index eb47f4af4a3..89fd8ce02bb 100644
--- a/packages/react-native/ReactAndroid/src/main/jni/react/runtime/jni/JReactHostInspectorTarget.cpp
+++ b/packages/react-native/ReactAndroid/src/main/jni/react/runtime/jni/JReactHostInspectorTarget.cpp
@@ -45,7 +45,7 @@ JReactHostInspectorTarget::JReactHostInspectorTarget(
           // Reject the connection.
           return nullptr;
         },
-        {.nativePageReloads = true});
+        {.nativePageReloads = true, .prefersFuseboxFrontend = true});
   }
 }
 
diff --git a/packages/react-native/ReactCommon/jsinspector-modern/InspectorInterfaces.cpp b/packages/react-native/ReactCommon/jsinspector-modern/InspectorInterfaces.cpp
index b8ac15d7b91..29580559389 100644
--- a/packages/react-native/ReactCommon/jsinspector-modern/InspectorInterfaces.cpp
+++ b/packages/react-native/ReactCommon/jsinspector-modern/InspectorInterfaces.cpp
@@ -28,7 +28,8 @@ const folly::dynamic targetCapabilitiesToDynamic(
     const InspectorTargetCapabilities& capabilities) {
   return folly::dynamic::object(
       "nativePageReloads", capabilities.nativePageReloads)(
-      "nativeSourceCodeFetching", capabilities.nativeSourceCodeFetching);
+      "nativeSourceCodeFetching", capabilities.nativeSourceCodeFetching)(
+      "prefersFuseboxFrontend", capabilities.prefersFuseboxFrontend);
 }
 
 namespace {
diff --git a/packages/react-native/ReactCommon/jsinspector-modern/InspectorInterfaces.h b/packages/react-native/ReactCommon/jsinspector-modern/InspectorInterfaces.h
index 07591f194d5..86c9a4b03b9 100644
--- a/packages/react-native/ReactCommon/jsinspector-modern/InspectorInterfaces.h
+++ b/packages/react-native/ReactCommon/jsinspector-modern/InspectorInterfaces.h
@@ -34,8 +34,9 @@ class IDestructible {
 };
 
 struct InspectorTargetCapabilities {
-  const bool nativePageReloads = false;
-  const bool nativeSourceCodeFetching = false;
+  bool nativePageReloads = false;
+  bool nativeSourceCodeFetching = false;
+  bool prefersFuseboxFrontend = false;
 };
 
 const folly::dynamic targetCapabilitiesToDynamic(
diff --git a/packages/react-native/ReactCommon/react/runtime/platform/ios/ReactCommon/RCTHost.mm b/packages/react-native/ReactCommon/react/runtime/platform/ios/ReactCommon/RCTHost.mm
index 4547a0daee1..975906420bf 100644
--- a/packages/react-native/ReactCommon/react/runtime/platform/ios/ReactCommon/RCTHost.mm
+++ b/packages/react-native/ReactCommon/react/runtime/platform/ios/ReactCommon/RCTHost.mm
@@ -191,7 +191,7 @@ class RCTHostHostTargetDelegate : public facebook::react::jsinspector_modern::Ho
                   .integrationName = "iOS Bridgeless (RCTHost)",
               });
         },
-        {.nativePageReloads = true});
+        {.nativePageReloads = true, .prefersFuseboxFrontend = true});
   }
   if (_instance) {
     RCTLogWarn(