From 031037f49120cb5527e390b89b52da845b517a66 Mon Sep 17 00:00:00 2001
From: Valentin Shergin <shergin@fb.com>
Date: Mon, 24 Sep 2018 12:54:28 -0700
Subject: [PATCH] Fabric: Cleaning up Shadow Tree on surface unregistering

Summary: As it mentioned in the comment, we have to commit an empty tree as part of cleaning up Surface.

Reviewed By: mdvacca

Differential Revision: D9931320

fbshipit-source-id: 04e780bafdb917adeb89f2edef2dc0348b2a4d4a
---
 ReactCommon/fabric/uimanager/Scheduler.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/ReactCommon/fabric/uimanager/Scheduler.cpp b/ReactCommon/fabric/uimanager/Scheduler.cpp
index 6828b0aeb..056222fdf 100644
--- a/ReactCommon/fabric/uimanager/Scheduler.cpp
+++ b/ReactCommon/fabric/uimanager/Scheduler.cpp
@@ -54,6 +54,8 @@ void Scheduler::unregisterRootTag(Tag rootTag) {
   const auto &iterator = shadowTreeRegistry_.find(rootTag);
   const auto &shadowTree = iterator->second;
   assert(shadowTree);
+  // As part of stopping the Surface, we have to commit an empty tree.
+  shadowTree->complete(std::const_pointer_cast<SharedShadowNodeList>(ShadowNode::emptySharedShadowNodeSharedList()));
   shadowTree->setDelegate(nullptr);
   shadowTreeRegistry_.erase(iterator);
 }