fix: make sure native libs are loaded for RN >= 0.80 (#315)

* fix: make sure native libs are loaded for RN >= 0.80

cause: loadNativeLibs() in ReactNativeBrownfield.kt is a no-op for RN >= 0.80.
All ReactNativeHostManager templates call loadReactNative(application) BEFORE
ReactNativeBrownfield.initialize(), so when done through the recommended path the libs load. But
loadNativeLibs() — called inside every initialize() overload — silently skips for RN >= 0.80. Any
consumer using ReactNativeBrownfield.initialize() directly — with a custom ReactHost, custom
packages list, or custom options — skipped native lib loading entirely. Without JNI_OnLoad firing,
registerComponentDescriptorsFromEntryPoint and the DefaultTurboModuleManagerDelegate module
providers were never assigned, leading to the SIGSEGV during Fabric initialization.
ddc011c — moved SoLoader.init() from preloadReactNative() into
initialize(application, rnHost, ...). Before this, SoLoader.init() was called inside
preloadReactNative after creating the React context. It was consolidated into the initialize entry
point.
9908b68 — added the RN_THRESHOLD_VERSION = "0.80.0" gate and removed SoLoader.init() + load() for
RN ≥ 0.80, leaving those calls only for < 0.80.
ReactNativeBrownfield.initialize() itself had no fallback for the RN ≥ 0.80 case. If anything
bypasses ReactNativeHostManager — a custom ReactHost, a consumer calling initialize() directly, or
the generated ReactNativeApplicationEntryPoint being unavailable — native libs are never loaded.
That's the bug this fix addresses.

* docs: add changeset

* fix: address compilation issue

* fix: drop support for RN < 0.80

* fix: get rid of redundant (now) PG config

Author: marcinszalski-callstack

.changeset/early-rice-fly.md

@@ -0,0 +1,5 @@
+---
+'@callstack/react-native-brownfield': patch
+---
+
+fix: make sure native libs are loaded for RN >= 0.80

apps/RNApp/android/BrownfieldLib/consumer-rules.pro

@@ -4,12 +4,9 @@ import android.app.Application
 import com.callstack.reactnativebrownfield.OnJSBundleLoaded
 import com.callstack.reactnativebrownfield.ReactNativeBrownfield
 import com.facebook.react.PackageList
-import com.facebook.react.ReactNativeApplicationEntryPoint.loadReactNative
 
 object ReactNativeHostManager {
     fun initialize(application: Application, onJSBundleLoaded: OnJSBundleLoaded? = null) {
-        loadReactNative(application)
-
         val packageList = PackageList(application).packages
         ReactNativeBrownfield.initialize(application, packageList, onJSBundleLoaded)
     }

apps/RNApp/android/BrownfieldLib/src/main/java/com/rnapp/brownfieldlib/ReactNativeHostManager.kt

@@ -7,7 +7,6 @@ import androidx.activity.OnBackPressedCallback
 import androidx.fragment.app.FragmentActivity
 import androidx.lifecycle.DefaultLifecycleObserver
 import androidx.lifecycle.LifecycleOwner
-import com.callstack.reactnativebrownfield.utils.VersionUtils
 import com.facebook.react.ReactHost
 import com.facebook.react.ReactInstanceEventListener
 import com.facebook.react.ReactPackage
@@ -28,33 +27,29 @@ fun interface OnMessageListener {
     fun onMessage(message: String)
 }
 
-/**
- * The threshold RN version based on which we decide whether to
- * load JNI libs or not. We only load JNI libs on version less
- * than this.
- */
-private const val RN_THRESHOLD_VERSION = "0.80.0"
-
 class ReactNativeBrownfield private constructor(val reactHost: ReactHost) {
     private val messageListeners = CopyOnWriteArrayList<OnMessageListener>()
 
     companion object {
         private lateinit var instance: ReactNativeBrownfield
         private val initialized = AtomicBoolean()
+        private val nativeLibsLoaded = AtomicBoolean()
         private const val LOG_TAG = "ReactNativeBrownfield"
 
         @JvmStatic
         val shared: ReactNativeBrownfield get() = instance
 
         private fun loadNativeLibs(application: Application) {
-            val rnVersion = BuildConfig.RN_VERSION
-
-            if (VersionUtils.isVersionLessThan(rnVersion, RN_THRESHOLD_VERSION)) {
-                SoLoader.init(application.applicationContext, OpenSourceMergedSoMapping)
-                load()
+            if (!nativeLibsLoaded.getAndSet(true)) {
+                loadNativeLibsInternal(application)
             }
         }
 
+        private fun loadNativeLibsInternal(application: Application) {
+            SoLoader.init(application.applicationContext, OpenSourceMergedSoMapping)
+            load()
+        }
+
         @JvmStatic
         @JvmOverloads
         fun initialize(
@@ -79,6 +74,8 @@ class ReactNativeBrownfield private constructor(val reactHost: ReactHost) {
             options: HashMap<String, Any>,
             onJSBundleLoaded: OnJSBundleLoaded? = null
         ) {
+            loadNativeLibs(application)
+
             val reactHost: ReactHost by lazy {
                 getDefaultReactHost(
                     context = application,

packages/react-native-brownfield/android/src/main/java/com/callstack/reactnativebrownfield/ReactNativeBrownfield.kt

@@ -6,14 +6,11 @@ import com.callstack.reactnativebrownfield.OnJSBundleLoaded
 import com.callstack.reactnativebrownfield.ReactNativeBrownfield
 import com.facebook.react.PackageList
 import com.facebook.react.ReactHost
-import com.facebook.react.ReactNativeApplicationEntryPoint.loadReactNative
 import expo.modules.ApplicationLifecycleDispatcher
 import expo.modules.ExpoReactHostFactory
 
 object ReactNativeHostManager {
     fun initialize(application: Application, onJSBundleLoaded: OnJSBundleLoaded? = null) {
-        loadReactNative(application)
-
         ApplicationLifecycleDispatcher.onApplicationCreate(application)
 
         val reactHost: ReactHost by lazy {

packages/react-native-brownfield/src/expo-config-plugin/template/android/ReactNativeHostManager.post55.kt

@@ -6,7 +6,6 @@ import com.callstack.reactnativebrownfield.OnJSBundleLoaded
 import com.callstack.reactnativebrownfield.ReactNativeBrownfield
 import com.facebook.react.PackageList
 import com.facebook.react.ReactHost
-import com.facebook.react.ReactNativeApplicationEntryPoint.loadReactNative
 import com.facebook.react.ReactPackage
 import com.facebook.react.defaults.DefaultReactNativeHost
 import expo.modules.ApplicationLifecycleDispatcher
@@ -15,8 +14,6 @@ import expo.modules.ReactNativeHostWrapper
 
 object ReactNativeHostManager {
     fun initialize(application: Application, onJSBundleLoaded: OnJSBundleLoaded? = null) {
-        loadReactNative(application)
-
         ApplicationLifecycleDispatcher.onApplicationCreate(application)
 
         val reactNativeHost = ReactNativeHostWrapper(