From 46f3285a3f240f9325a548e677a1927402d76bd7 Mon Sep 17 00:00:00 2001
From: TranLuongTuanAnh <tlta.bkhn@gmail.com>
Date: Mon, 28 Jan 2019 01:57:04 -0800
Subject: [PATCH] Fix issue #21065 getInspectorDataForViewTag is not a function
 (#21237)

Summary:
Fix renderer.getInspectorDataForViewTag is not a function when try Toggle Inspector

Fixes #21065

Release Notes:
--------------
[BUGFIX] [MINOR] [/react-native/Libraries/Inspector/Inspector.js]
Pull Request resolved: https://github.com/facebook/react-native/pull/21237

Differential Revision: D13838339

Pulled By: cpojer

fbshipit-source-id: 363a4beba211e7868395578c7941cbda119bc753
---
 Libraries/Inspector/Inspector.js | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/Libraries/Inspector/Inspector.js b/Libraries/Inspector/Inspector.js
index 89cf1af9df877e..7e85c4d099eba1 100644
--- a/Libraries/Inspector/Inspector.js
+++ b/Libraries/Inspector/Inspector.js
@@ -47,14 +47,20 @@ function findRenderers(): $ReadOnlyArray<ReactRenderer> {
 function getInspectorDataForViewTag(touchedViewTag: number) {
   for (let i = 0; i < renderers.length; i++) {
     const renderer = renderers[i];
-    const inspectorData = renderer.getInspectorDataForViewTag(touchedViewTag);
-    if (inspectorData.hierarchy.length > 0) {
-      return inspectorData;
+    if (
+      Object.prototype.hasOwnProperty.call(
+        renderer,
+        'getInspectorDataForViewTag',
+      )
+    ) {
+      const inspectorData = renderer.getInspectorDataForViewTag(touchedViewTag);
+      if (inspectorData.hierarchy.length > 0) {
+        return inspectorData;
+      }
     }
   }
   throw new Error('Expected to find at least one React renderer.');
 }
-
 class Inspector extends React.Component<
   {
     inspectedViewTag: ?number,