add a few more helpers

modules/expo-bluesky-swiss-army/android/src/main/java/expo/modules/blueskyswissarmy/sharedprefs/Preferences.kt

@@ -159,4 +159,22 @@ class Preferences(private val context: Context) {
     val set = safeInstance.getStringSet(key, setOf()) ?: setOf()
     return set.contains(value)
   }
+
+  fun hasValue(key: String): Boolean {
+    val safeInstance = getInstance(context)
+    return safeInstance.contains(key)
+  }
+
+  fun getValues(keys: Set<String>): Map<String, Any?> {
+    val safeInstance = getInstance(context)
+    return keys.associateWith { key ->
+      when (val value = safeInstance.all[key]) {
+        is String -> value
+        is Float -> value
+        is Boolean -> value
+        is Set<*> -> value
+        else -> null
+      }
+    }
+  }
 }

modules/expo-bluesky-swiss-army/ios/SharedPrefs/SharedPrefs.swift

@@ -82,4 +82,8 @@ public class SharedPrefs {
   public func hasValue(_ key: String) -> Bool {
     return getDefaults(key)?.value(forKey: key) != nil
   }
+
+  public func getValues(_ keys: [String]) -> [String:Any?]? {
+    return getDefaults("keys:\(keys)")?.dictionaryWithValues(forKeys: keys)
+  }
 }