Updated UserDefaultsStore

yakovmanshin · May 13, 2024 · 860e6b8 · 860e6b8
1 parent c83fda1
commit 860e6b8
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/Sources/YMFF/FeatureFlagResolver/Store/UserDefaultsStore.swift b/Sources/YMFF/FeatureFlagResolver/Store/UserDefaultsStore.swift
@@ -39,12 +39,20 @@ final public class UserDefaultsStore {
 extension UserDefaultsStore: SynchronousMutableFeatureFlagStore {
 
     public func valueSync<Value>(for key: FeatureFlagKey) -> Result<Value, FeatureFlagStoreError> {
+        guard !(Value.self is ExpressibleByNilLiteral.Type) else {
+            return .failure(.otherError(Error.optionalValuesAreNotSupported))
+        }
+
         guard let anyValue = userDefaults.object(forKey: key) else { return .failure(.valueNotFound) }
         guard let value = anyValue as? Value else { return .failure(.typeMismatch) }
         return .success(value)
     }
 
     public func setValueSync<Value>(_ value: Value, for key: FeatureFlagKey) throws {
+        guard !(value is ExpressibleByNilLiteral) else {
+            throw FeatureFlagStoreError.otherError(Error.optionalValuesAreNotSupported)
+        }
+
         userDefaults.set(value, forKey: key)
     }