From 4ac65f5413ee59f7546b88a2eae2c4ce6fa8826b Mon Sep 17 00:00:00 2001
From: Mike Nedosekin <crespo8800@gmail.com>
Date: Tue, 12 Feb 2019 07:10:43 -0800
Subject: [PATCH] Add deprecation warning for MaskedViewIOS (#23398)

Summary:
Add a deprecation warning for the [MaskedViewIOS](https://facebook.github.io/react-native/docs/maskedviewios) module as part of #23313.
[General] [Deprecated] - Deprecated [MaskedViewIOS](https://facebook.github.io/react-native/docs/maskedviewios) as it has now been moved to [react-native-community/masked-view](https://github.com/react-native-community/react-native-masked-view)
Pull Request resolved: https://github.com/facebook/react-native/pull/23398

Differential Revision: D14045290

Pulled By: cpojer

fbshipit-source-id: e97230f6861cf35ee0b49376d0a5c9c47d4e99f8
---
 Libraries/react-native/react-native-implementation.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Libraries/react-native/react-native-implementation.js b/Libraries/react-native/react-native-implementation.js
index 84b4992db..1609858b8 100644
--- a/Libraries/react-native/react-native-implementation.js
+++ b/Libraries/react-native/react-native-implementation.js
@@ -74,6 +74,12 @@ module.exports = {
     return require('ListView');
   },
   get MaskedViewIOS() {
+    warnOnce(
+      'maskedviewios-moved',
+      'MaskedViewIOS has been extracted from react-native core and will be removed in a future release. ' +
+        "It can now be installed and imported from '@react-native-community/masked-view' instead of 'react-native'. " +
+        'See https://github.com/react-native-community/react-native-masked-view',
+    );
     return require('MaskedViewIOS');
   },
   get Modal() {