fix: Guard against null auto env attributes and async-storage. (#384)

Author: yusinto

packages/sdk/react-native/src/platform/ConditionalAsyncStorage.ts

@@ -1,7 +1,7 @@
 /* eslint-disable import/no-mutable-exports,global-require */
 
 /**
- * For react-native version >= 0.71, the LaunchDarkly React-Native SDK uses
+ * The LaunchDarkly React-Native SDK uses
  * @react-native-async-storage/async-storage for bootstrapping. This is a native
  * dependency.
  *
@@ -14,17 +14,18 @@
  * does not work with transitive dependencies:
  * https://github.com/react-native-community/cli/issues/1347
  *
- * For react-native version < 0.71, the built-in react-native AsyncStorage
- * module is used.
  */
 let ConditionalAsyncStorage: any;
 
 try {
-  // react-native version < 0.71
-  ConditionalAsyncStorage = require('react-native').AsyncStorage;
-} catch (e) {
-  // react-native version >= 0.71
   ConditionalAsyncStorage = require('@react-native-async-storage/async-storage').default;
+} catch (e) {
+  // Use a mock if async-storage is unavailable
+  ConditionalAsyncStorage = {
+    getItem: (_key: string) => Promise.resolve(null),
+    setItem: (_key: string, _value: string) => Promise.resolve(),
+    removeItem: (_key: string) => Promise.resolve(),
+  };
 }
 
 export default ConditionalAsyncStorage;

packages/sdk/react-native/src/platform/autoEnv.ts

@@ -37,6 +37,6 @@ export const ldDevice: LDDevice = {
       default: Platform.OS,
     }),
     name: Platform.OS,
-    version: Platform.Version.toString(),
+    version: Platform.Version?.toString(),
   },
 };

packages/sdk/react-native/src/platform/locale.ts

@@ -7,6 +7,6 @@ import { NativeModules, Platform } from 'react-native';
 const locale =
   Platform.OS === 'ios'
     ? NativeModules.SettingsManager.settings.AppleLocale // iOS
-    : NativeModules.I18nManager.localeIdentifier; // Android and rest
+    : NativeModules.I18nManager?.localeIdentifier;
 
 export default locale;