Revert "MainApplication should not use ReactNativeHost (#171)" (#172)

Author: cortinico

template/android/app/src/main/java/com/helloworld/MainApplication.kt

@@ -5,20 +5,31 @@ import com.facebook.react.PackageList
 import com.facebook.react.ReactApplication
 import com.facebook.react.ReactHost
 import com.facebook.react.ReactNativeApplicationEntryPoint.loadReactNative
+import com.facebook.react.ReactNativeHost
+import com.facebook.react.ReactPackage
 import com.facebook.react.defaults.DefaultReactHost.getDefaultReactHost
+import com.facebook.react.defaults.DefaultReactNativeHost
 
 class MainApplication : Application(), ReactApplication {
 
-  override val reactHost: ReactHost by lazy {
-    getDefaultReactHost(
-      context = applicationContext,
-      packageList =
-        PackageList(this).packages.apply {
-          // Packages that cannot be autolinked yet can be added manually here, for example:
-          // add(MyReactNativePackage())
-        },
-    )
-  }
+  override val reactNativeHost: ReactNativeHost =
+      object : DefaultReactNativeHost(this) {
+        override fun getPackages(): List<ReactPackage> =
+            PackageList(this).packages.apply {
+              // Packages that cannot be autolinked yet can be added manually here, for example:
+              // add(MyReactNativePackage())
+            }
+
+        override fun getJSMainModuleName(): String = "index"
+
+        override fun getUseDeveloperSupport(): Boolean = BuildConfig.DEBUG
+
+        override val isNewArchEnabled: Boolean = BuildConfig.IS_NEW_ARCHITECTURE_ENABLED
+        override val isHermesEnabled: Boolean = BuildConfig.IS_HERMES_ENABLED
+      }
+
+  override val reactHost: ReactHost
+    get() = getDefaultReactHost(applicationContext, reactNativeHost)
 
   override fun onCreate() {
     super.onCreate()