From 308f9a131af23b98ff2ce9ffd72f43dc015f116e Mon Sep 17 00:00:00 2001
From: Valentin Shergin <shergin@fb.com>
Date: Sat, 26 Sep 2020 22:00:15 -0700
Subject: [PATCH] Fabric: Failing early in case if a argument of
 `-[RCTComponentViewFactory registerComponentViewClass:]` is nil

Summary:
Subject.

Changelog: [Internal] Fabric-specific internal change.

Reviewed By: JoshuaGross

Differential Revision: D23914517

fbshipit-source-id: 1c909e7d21b12326881990ecf855e814bf957f3c
---
 React/Fabric/Mounting/RCTComponentViewFactory.mm | 1 +
 1 file changed, 1 insertion(+)

diff --git a/React/Fabric/Mounting/RCTComponentViewFactory.mm b/React/Fabric/Mounting/RCTComponentViewFactory.mm
index 88489f2b3cd..1c857b440c9 100644
--- a/React/Fabric/Mounting/RCTComponentViewFactory.mm
+++ b/React/Fabric/Mounting/RCTComponentViewFactory.mm
@@ -117,6 +117,7 @@ static Class<RCTComponentViewProtocol> RCTComponentViewClassWithName(const char
 
 - (void)registerComponentViewClass:(Class<RCTComponentViewProtocol>)componentViewClass
 {
+  RCTAssert(componentViewClass, @"RCTComponentViewFactory: Provided `componentViewClass` is `nil`.");
   std::unique_lock<better::shared_mutex> lock(_mutex);
 
   auto componentDescriptorProvider = [componentViewClass componentDescriptorProvider];