From 0cd1d3b5a252ec99b4452c0d3e91a952dea780ff Mon Sep 17 00:00:00 2001
From: Dan Abramov <dan.abramov@gmail.com>
Date: Wed, 11 May 2016 23:31:48 +0100
Subject: [PATCH] Allow empty components in the native operation logs

Fixes #6742
---
 src/isomorphic/ReactPerf.js | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/isomorphic/ReactPerf.js b/src/isomorphic/ReactPerf.js
index 4c631a7f13..f89de6764c 100644
--- a/src/isomorphic/ReactPerf.js
+++ b/src/isomorphic/ReactPerf.js
@@ -236,11 +236,17 @@ function getWasted(flushHistory = getFlushHistory()) {
 
 function getOperations(flushHistory = getFlushHistory()) {
   var stats = [];
+
   flushHistory.forEach((flush, flushIndex) => {
     var {operations, treeSnapshot} = flush;
+
     operations.forEach(operation => {
       var {instanceID, type, payload} = operation;
-      var {displayName, ownerID} = treeSnapshot[instanceID];
+      var {displayName, ownerID} = instanceID !== 0 ?
+        treeSnapshot[instanceID] :
+        // Empty components may appear in some operation logs.
+        {displayName: '#empty', ownerID: null};
+
       var owner = treeSnapshot[ownerID];
       var key = (owner ? owner.displayName + ' > ' : '') + displayName;