[Firebase AI] Make GenerativeAIRequest.Response Sendable (#14947)

Author: andrewheard

FirebaseAI/CHANGELOG.md

@@ -1,3 +1,6 @@
+# Unreleased
+- [fixed] Fixed `Sendable` warnings introduced in the Xcode 26 beta. (#14947)
+
 # 11.13.0
 - [feature] Initial release of the Firebase AI Logic SDK (`FirebaseAI`). This
   SDK *replaces* the previous Vertex AI in Firebase SDK (`FirebaseVertexAI`) to

FirebaseAI/Sources/GenerativeAIRequest.swift

@@ -16,7 +16,7 @@ import Foundation
 
 @available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 protocol GenerativeAIRequest: Sendable, Encodable {
-  associatedtype Response: Decodable
+  associatedtype Response: Sendable, Decodable
 
   var url: URL { get }
 

FirebaseAI/Sources/Types/Internal/Imagen/ImagenGCSImage.swift

@@ -18,7 +18,7 @@ import Foundation
 ///
 /// TODO(#14451): Make this `public` and move to the `Public` directory when ready.
 @available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
-struct ImagenGCSImage {
+struct ImagenGCSImage: Sendable {
   /// The IANA standard MIME type of the image file; either `"image/png"` or `"image/jpeg"`.
   ///
   /// > Note: To request a different format, set ``ImagenGenerationConfig/imageFormat`` in

FirebaseAI/Sources/Types/Internal/Requests/CountTokensRequest.swift

@@ -38,7 +38,7 @@ extension CountTokensRequest: GenerativeAIRequest {
 
 /// The model's response to a count tokens request.
 @available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
-public struct CountTokensResponse {
+public struct CountTokensResponse: Sendable {
   /// The total number of tokens in the input given to the model as a prompt.
   public let totalTokens: Int
 

FirebaseAI/Sources/Types/Public/Imagen/ImagenGenerationResponse.swift

@@ -23,7 +23,7 @@ import Foundation
 @available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 // TODO(#14451): Re-add "- ``ImagenModel/generateImages(prompt:gcsURI:)`` where `T` is
 //                         ``ImagenGCSImage``" in the DocC above.
-public struct ImagenGenerationResponse<T> {
+public struct ImagenGenerationResponse<T>: Sendable where T: Sendable {
   /// The images generated by Imagen; see ``ImagenInlineImage``.
   ///
   /// > Important: The number of images generated may be fewer than the number requested if one or

FirebaseAI/Sources/Types/Public/Imagen/ImagenInlineImage.swift

@@ -16,7 +16,7 @@ import Foundation
 
 /// An image generated by Imagen, represented as inline data.
 @available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
-public struct ImagenInlineImage {
+public struct ImagenInlineImage: Sendable {
   /// The IANA standard MIME type of the image file; either `"image/png"` or `"image/jpeg"`.
   ///
   /// > Note: To request a different format, set ``ImagenGenerationConfig/imageFormat`` in