Add Dictionary support to UserDefaultsDependency

Sources/UserDefaultsDependency/UserDefaults+Specializations.swift

@@ -35,6 +35,23 @@ extension UserDefaults.Dependency {
     self._set(value, key)
   }
 
+  /// Returns the Dictionary value associated with the specified key.
+  /// - Parameter key: A key in the current user defaults store.
+  /// - Returns: The Dictionary value associated with the specified key, or `nil` if there is no value
+  /// associated to `key`
+  public func dictionary(forKey key: String) -> [String: any Sendable]? {
+    self._get(key, Dictionary<String, any Sendable>.self) as? [String: any Sendable]
+  }
+
+  /// Sets the value of the specified default key to the specified Dictionary value.
+  /// - Parameters:
+  ///   - value: The Dictionary value to store in the user's defaults store. If the value is `nil`,
+  ///   the associated value will be removed from the store.
+  ///   - key: The key with which to associate the value.
+  public func set(_ value: [String: any Sendable]?, forKey key: String) {
+    self._set(value, key)
+  }
+
   /// Returns the Double value associated with the specified key.
   /// - Parameter key: A key in the current user defaults store.
   /// - Returns: The Double value associated with the specified key, or `nil` if there is no value

Sources/UserDefaultsDependency/UserDefaultsDependency.swift

@@ -149,6 +149,8 @@ extension UserDefaults {
       return self.data(forKey: key)
     case let type where type == Date.self, let type where type == Date?.self:
       return self.object(forKey: key) as? Date
+    case let type where type == Dictionary<String, any Sendable>.self, let type where type == Dictionary<String, any Sendable>?.self:
+      return self.dictionary(forKey: key)
     case let type where type == Double.self, let type where type == Double?.self:
       guard self.contains(key: key) else { return nil }
       return self.double(forKey: key)
@@ -176,6 +178,8 @@ extension UserDefaults {
       self.set(value, forKey: key)
     case let value as Date:
       self.set(value, forKey: key)
+    case let value as Dictionary<String, any Sendable>:
+      self.set(value, forKey: key)
     case let value as Double:
       self.set(value, forKey: key)
     case let value as Int:

Tests/UserDefaultsDependencyTests/UserDefaultsDependencyTests.swift

@@ -72,6 +72,23 @@ final class UserDefaultsDependencyTests: XCTestCase {
     UserDefaults.standard.removeObject(forKey: "date")
   }
 
+  func testLiveUserDefaultsDictionary() {
+    @Dependency(\.userDefaults) var userDefaults: UserDefaults.Dependency
+    let dict: [String: any Sendable] = ["key1": "value1", "key2": "value2"]
+    UserDefaults.standard.removeObject(forKey: "dictionary")
+    withDependencies {
+      $0.userDefaults = .standard
+    } operation: {
+      userDefaults.set(dict, forKey: "dictionary")
+    }
+    withDependencies {
+      $0.userDefaults = .standard
+    } operation: {
+      XCTAssertEqual(userDefaults.dictionary(forKey: "dictionary") as? [String: String], ["key1": "value1", "key2": "value2"])
+    }
+    UserDefaults.standard.removeObject(forKey: "dictionary")
+  }
+
   func testLiveUserDefaultsDouble() {
     @Dependency(\.userDefaults) var userDefaults: UserDefaults.Dependency
     let double = 123.4