MainApplication should not use ReactNativeHost (#171)

Author: cortinico

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

@@ -5,31 +5,20 @@ 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 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 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 fun onCreate() {
     super.onCreate()