From 7ffdccd377cfff3f8b6a433bc17dde9b5b2a62a6 Mon Sep 17 00:00:00 2001
From: Janic Duplessis <janicduplessis@gmail.com>
Date: Mon, 8 Oct 2018 03:06:53 -0400
Subject: [PATCH] Use `getViewManagerConfig` when available to remove warning
 (#28)

---
 src/screens.native.js | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/screens.native.js b/src/screens.native.js
index 701ebc49..e85f0bb9 100644
--- a/src/screens.native.js
+++ b/src/screens.native.js
@@ -9,9 +9,16 @@ import {
 
 let USE_SCREENS = false;
 
+// UIManager[`${moduleName}`] is deprecated in RN 0.58 and `getViewManagerConfig` is added.
+// We can remove this when we drop support for RN < 0.58.
+const getViewManagerConfigCompat = name =>
+  typeof UIManager.getViewManagerConfig !== 'undefined'
+    ? UIManager.getViewManagerConfig(name)
+    : UIManager[name];
+
 export function useScreens(shouldUseScreens = true) {
   USE_SCREENS = shouldUseScreens;
-  if (USE_SCREENS && !UIManager['RNSScreen']) {
+  if (USE_SCREENS && !getViewManagerConfigCompat('RNSScreen')) {
     console.error(
       `Screen native module hasn't been linked. Please check the react-native-screens README for more details`
     );