From 1ca63e3e3dff6639f4efde74583145f9fa53759a Mon Sep 17 00:00:00 2001
From: Peter Abbondanzo <abbo@meta.com>
Date: Mon, 15 Jul 2024 07:00:35 -0700
Subject: [PATCH] Check nullability of native view config before validation
 (#45420)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/45420

Devex improvement to skip validation when no native view config exists. Redbox is still hit, showing the true error. See test plan below before/after

Changelog: [Internal]

Reviewed By: javache

Differential Revision: D59702501

fbshipit-source-id: 9aada9813c2930ee2b4bb23e5ba8a3e546c4e9af
---
 .../NativeComponent/NativeComponentRegistry.js        | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/packages/react-native/Libraries/NativeComponent/NativeComponentRegistry.js b/packages/react-native/Libraries/NativeComponent/NativeComponentRegistry.js
index f088d2ac7fe..528820399be 100644
--- a/packages/react-native/Libraries/NativeComponent/NativeComponentRegistry.js
+++ b/packages/react-native/Libraries/NativeComponent/NativeComponentRegistry.js
@@ -11,6 +11,7 @@
 import type {
   HostComponent,
   PartialViewConfig,
+  ViewConfig,
 } from '../Renderer/shims/ReactNativeTypes';
 
 import getNativeComponentAttributes from '../ReactNative/getNativeComponentAttributes';
@@ -60,7 +61,7 @@ export function get<Config>(
       verify: false,
     };
 
-    let viewConfig;
+    let viewConfig: ViewConfig;
     if (native) {
       viewConfig =
         getNativeComponentAttributes(name) ??
@@ -81,7 +82,13 @@ export function get<Config>(
       const nativeViewConfig = native
         ? viewConfig
         : getNativeComponentAttributes(name);
-      const staticViewConfig = native
+
+      if (nativeViewConfig == null) {
+        // Defer to static view config if native view config is missing.
+        return viewConfig;
+      }
+
+      const staticViewConfig: ViewConfig = native
         ? createViewConfig(viewConfigProvider())
         : viewConfig;