[BUG] iOS - Possible MMKV storage reset after upgrading expo-share-intent

[julian-gargicevich]

🐛 Possible MMKV storage reset after upgrading expo-share-intent (iOS)

Versions

• expo-share-intent: 2.2.0 → 5.1.1
• Platform: iOS

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Description

After upgrading expo-share-intent from 2.2.0 to 5.1.1, we noticed that MMKV storage appears to be cleared on iOS.

We’re not certain this is caused by expo-share-intent itself, but the timing lines up with the upgrade and native rebuild.

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Question

Have any changes between 2.2.0 and 5.1.1:

• altered the app or share extension container (bundle ID, entitlements, App Groups)?
• changed the base directory used by the main app or extension?
• required rebuild steps that could result in a new sandbox on install?

Even confirmation that no storage-affecting changes exist would help us narrow this down.

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[prathameshmm02]

Faced the same issue on my app. It is because expo-share-intent adds AppGroupIdentifier to Info.plist and if it is present mmkv stores the mmkv data in your shared container, applying following patch fixed my issue.

diff --git a/lib/createMMKV/createMMKV.js b/lib/createMMKV/createMMKV.js
index 71feda6f53aa8cbe7f6e27c65ab2dec4b355b24a..ced844cf41416c9b5374bce3177ebbcb3fa76daa 100644
--- a/lib/createMMKV/createMMKV.js
+++ b/lib/createMMKV/createMMKV.js
@@ -11,17 +11,6 @@ export function createMMKV(configuration) {
     const factory = getMMKVFactory();
     // Pre-parse the config
     let config = configuration ?? { id: factory.defaultMMKVInstanceId };
-    if (Platform.OS === 'ios') {
-        if (config.path == null) {
-            // If the user set an App Group directory in Info.plist, let's use
-            // the App Group as a MMKV path:
-            const platformContext = getPlatformContext();
-            const appGroupDirectory = platformContext.getAppGroupDirectory();
-            if (appGroupDirectory != null) {
-                config.path = appGroupDirectory;
-            }
-        }
-    }
     // Creates the C++ MMKV HybridObject
     const mmkv = factory.createMMKV(config);
     // Add a hook that trims the storage when we get a memory warning