fix: support AI SDK 7 in react-headless

packages/assistant-ui/README.md

@@ -104,6 +104,9 @@ can implement that policy using the runtime's continuation API.
 For a Vercel AI SDK runtime, the package provides that policy as an optional
 convenience helper. Install `ai` and import it from the `/ai-sdk` subpath:
 
+The helper supports AI SDK 6 and 7. AI SDK 7 requires Node.js 22 or later and
+an ESM application.
+
 ```tsx
 import { useChatRuntime } from "@assistant-ui/react-ai-sdk";
 import { shouldContinueAfterOpenUIPrompt } from "@openuidev/assistant-ui/ai-sdk";

packages/react-headless/README.md

@@ -22,8 +22,13 @@ The Vercel AI SDK integration has one optional peer dependency:
 
 ```bash
 npm install ai@^6
+# or, on Node.js 22+ with ESM
+npm install ai@^7
 ```
 
+Both AI SDK 6 and 7 are supported. AI SDK 7 requires Node.js 22 or later and
+is ESM-only.
+
 ## Overview
 
 Use `@openuidev/react-headless` when you want OpenUI's chat behavior without OpenUI's visual components:
@@ -185,7 +190,7 @@ const llm = fetchLLM({ url: "/api/chat", streamAdapter: openAIAdapter() });
 | `openAIAdapter()` | Parses OpenAI Chat Completions streaming (`ChatCompletionChunk`) |
 | `openAIResponsesAdapter()` | Parses OpenAI Responses API streaming (`ResponseStreamEvent`) |
 | `openAIReadableStreamAdapter()` | Parses OpenAI SDK's `Stream.toReadableStream()` NDJSON output |
-| `vercelAIAdapter()` | Parses Vercel AI SDK v6 UIMessage streams from `toUIMessageStreamResponse()` |
+| `vercelAIAdapter()` | Parses Vercel AI SDK v6 and v7 UIMessage streams |
 
 For a Vercel AI SDK route, use its stream adapter and message format together:
 
@@ -236,7 +241,7 @@ const llm = fetchLLM({
 | `identityMessageFormat` | Default format when messages are already AG-UI shaped |
 | `openAIMessageFormat` | Converts to/from OpenAI `ChatCompletionMessageParam[]` |
 | `openAIConversationMessageFormat` | Converts to/from OpenAI Responses API `ResponseInputItem[]` |
-| `vercelAIMessageFormat` | Converts to/from Vercel AI SDK v6 `UIMessage[]` |
+| `vercelAIMessageFormat` | Converts to/from Vercel AI SDK v6 and v7 `UIMessage[]` |
 
 ### Custom format
 

packages/react-headless/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@openuidev/react-headless",
-  "version": "0.9.7",
+  "version": "0.9.8",
   "description": "Headless React primitives for AI chat — state management, streaming adapters for OpenAI, Vercel AI SDK, and AG-UI, message format converters, and thread management for OpenUI generative UI apps",
   "license": "MIT",
   "type": "module",
@@ -39,7 +39,7 @@
     "ci": "pnpm run lint:check && pnpm run format:check"
   },
   "peerDependencies": {
-    "ai": "^6.0.0",
+    "ai": "^6.0.0 || ^7.0.0",
     "react": "catalog:",
     "zustand": "catalog:"
   },

packages/react-headless/src/stream/adapters/__tests__/vercel-ai-sdk.test.ts

@@ -492,7 +492,7 @@ describe("vercelAIAdapter", () => {
 
     try {
       await expect(collect(vercelAIAdapter().parse(makeResponse("")))).rejects.toThrow(
-        'vercelAIAdapter requires the optional peer dependency "ai" (Vercel AI SDK v6).',
+        'vercelAIAdapter requires the optional peer dependency "ai" (Vercel AI SDK v6 or v7).',
       );
     } finally {
       vi.doUnmock("ai");

packages/react-headless/src/stream/adapters/vercel-ai-sdk.ts

@@ -2,7 +2,7 @@ import type { UIMessage, UIMessageChunk } from "ai";
 import { AGUIEvent, EventType, StreamProtocolAdapter } from "../../types";
 
 const MISSING_AI_SDK_MESSAGE =
-  'vercelAIAdapter requires the optional peer dependency "ai" (Vercel AI SDK v6).';
+  'vercelAIAdapter requires the optional peer dependency "ai" (Vercel AI SDK v6 or v7).';
 const PROVIDER_EXECUTED_TOOLS_UNSUPPORTED_MESSAGE =
   "Vercel AI SDK provider-executed tools are not supported because AG-UI messages cannot preserve providerExecuted semantics.";
 const TOOL_EXECUTION_DENIED_MESSAGE = "Tool execution was denied";
@@ -64,8 +64,7 @@ function toolResult(toolCallId: string, content: string, error?: string): AGUIEv
 }
 
 /**
- * Adapter for Vercel AI SDK v6 UIMessage streams, such as responses returned by
- * `toUIMessageStreamResponse()`.
+ * Adapter for Vercel AI SDK v6 and v7 UIMessage streams.
  *
  * The AI SDK is loaded only when parsing begins so it can remain an optional
  * peer dependency for consumers that use other stream adapters. Its

packages/react-headless/src/stream/formats/vercel-ai-message-format.ts

@@ -438,7 +438,7 @@ function fromVercelMessages(data: unknown): Message[] {
 }
 
 /**
- * Converts messages between AG-UI and Vercel AI SDK v6 `UIMessage` format.
+ * Converts messages between AG-UI and Vercel AI SDK v6 and v7 `UIMessage` format.
  *
  * AG-UI tool-result messages are folded into the matching assistant tool part,
  * because `UIMessage` represents a tool invocation and its result as one part.