Deprecate StreamingReactResponse. (#1570)

Author: lgrammel

.changeset/eighty-numbers-matter.md

@@ -0,0 +1,5 @@
+---
+'ai': patch
+---
+
+Deprecate StreamingReactResponse (use AI SDK RSC instead).

packages/core/react/use-chat.ts

@@ -73,6 +73,9 @@ export type UseChatHelpers = {
   data?: JSONValue[];
 };
 
+/**
+@deprecated Use AI SDK RSC instead: https://sdk.vercel.ai/docs/ai-sdk-rsc
+ */
 type StreamingReactResponseAction = (payload: {
   messages: Message[];
   data?: Record<string, string>;
@@ -115,6 +118,7 @@ const getStreamedResponse = async (
         }),
       );
 
+  // TODO deprecated, remove in next major release
   if (typeof api !== 'string') {
     // In this case, we are handling a Server Action. No complex mode handling needed.
 

packages/core/shared/types.ts

@@ -90,9 +90,15 @@ export interface Message {
   tool_call_id?: string;
   createdAt?: Date;
   content: string;
+
+  /**
+@deprecated Use AI SDK RSC instead: https://sdk.vercel.ai/docs/ai-sdk-rsc
+ */
   ui?: string | JSX.Element | JSX.Element[] | null | undefined;
+
   role: 'system' | 'user' | 'assistant' | 'function' | 'data' | 'tool';
   /**
+   *
    * If the message has a role of `function`, the `name` field is the name of the function.
    * Otherwise, the name field should not be set.
    */

packages/core/streams/streaming-react-response.ts

@@ -20,12 +20,17 @@ type Payload = {
   content: string;
 };
 
+/**
+ @deprecated Use AI SDK RSC instead: https://sdk.vercel.ai/docs/ai-sdk-rsc
+ */
 export type ReactResponseRow = Payload & {
   next: null | Promise<ReactResponseRow>;
 };
 
 /**
- * A utility class for streaming React responses.
+A utility class for streaming React responses.
+
+@deprecated Use AI SDK RSC instead: https://sdk.vercel.ai/docs/ai-sdk-rsc
  */
 export class experimental_StreamingReactResponse {
   constructor(