feat (ui/react): support resuming an ongoing stream #6053
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Please wait until it's landed on main and then cherry-pick. Also there seem to be a lot of files included that shouldn't be under solidstart (it's been removed in v5). |
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lgrammel
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jeremyphilemon
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## Background This pull request fixes a docs formatting issue due to a missing comma in useChat reference docs. ## Summary Fixed formatting in useChat reference docs by adding a comma. ## Tasks - [x] Documentation has been added / updated (for bug fixes / features) - [x] Formatting issues have been fixed (run `pnpm prettier-fix` in the project root) ## Related Issues #6053
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* origin/v5: fix(providers/openai): logprobs for stream alongside completion model (#6091) chore (ai): move maxSteps into UseChatOptions (#6113) docs (ai): add notes on schema .optional() (#6111) chore: update references to use ai-sdk.dev (#6076) (#6107) Version Packages (canary) (#6069) chore (provider-utils): rename TestServerCall.requestBody to requestBodyJson (#6106) chore (ai): rename CoreMessage to ModelMessage (#6105) feat (ai): add filename to file ui parts (#6104) feat (docs): add Dify community provider (#4084) (#6067) (#6103) feat (docs): add Sarvam community provider (#6079) (#6096) fix(providers/openai): zod parse error with function (#6074) (#6095) feat(docs): add Weave observability provider (#6029) (#6094) core (ai/mcp): update experimental MCP client documentation for Streamable HTTP transport usage (#5972) (#6093) fix (docs): update formatting in useChat reference docs (#6100) chore (ai): replace useChat attachments with file ui parts (#6071) feat (ui/react): support resuming an ongoing stream (#6053) test (openai): update snapshot (#6086)
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…call * origin/v5: (43 commits) chore (provider-utils): return IdGenerator interface (#6118) chore (provider): improve jsdoc comments (#6117) chore (ai): remove outdated typecasts (#6116) chore (ai): remove useChat keepLastMessageOnError (#6114) fix(providers/openai): logprobs for stream alongside completion model (#6091) chore (ai): move maxSteps into UseChatOptions (#6113) docs (ai): add notes on schema .optional() (#6111) chore: update references to use ai-sdk.dev (#6076) (#6107) Version Packages (canary) (#6069) chore (provider-utils): rename TestServerCall.requestBody to requestBodyJson (#6106) chore (ai): rename CoreMessage to ModelMessage (#6105) feat (ai): add filename to file ui parts (#6104) feat (docs): add Dify community provider (#4084) (#6067) (#6103) feat (docs): add Sarvam community provider (#6079) (#6096) fix(providers/openai): zod parse error with function (#6074) (#6095) feat(docs): add Weave observability provider (#6029) (#6094) core (ai/mcp): update experimental MCP client documentation for Streamable HTTP transport usage (#5972) (#6093) fix (docs): update formatting in useChat reference docs (#6100) chore (ai): replace useChat attachments with file ui parts (#6071) feat (ui/react): support resuming an ongoing stream (#6053) ...
This was referenced May 7, 2025
iteratetograceness
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This pull request adds the ability for clients to resume an ongoing chat generation stream after a network disconnect. This pull request adds support for the `useChat` hook to resume an ongoing chat generation stream by exposing `experimental_resume()` that can be called by any client, typically during the initial mount of the hook. The `experimental_resume` function makes a `GET` request to the api endpoint you've initialized the hook with (or `/api/chat` by default) and streams the contents of the stream if it is active or fails silently if it has ended. In order for `experimental_resume` to work as intended, it requires the usage of the [`resumable-stream`](https://www.npmjs.com/package/resumable-stream) package for stream creation and a redis instance for the package to manage the pub/sub mechanism. An example has been added at `examples/next-openai/app/use-chat-resume` to test the feature. Follow the following steps to test it end-to-end: 1. Run the development server 2. Navigate to `http://localhost:3000/use-chat-resume` 3. Send a message that will have a longer generation duration, example "Write an essay about Michael Jordan" 4. Once the generation starts, click the chat id above to open the conversation in a new tab 5. Verify the stream gets resumed - [x] Tests have been added / updated (for bug fixes / features) - [x] Documentation has been added / updated (for bug fixes / features) - [x] A _patch_ changeset for relevant packages has been added - [x] Formatting issues have been fixed (run `pnpm prettier-fix` in the project root)
iteratetograceness
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May 9, 2025
## Background This pull request fixes a docs formatting issue due to a missing comma in useChat reference docs. ## Summary Fixed formatting in useChat reference docs by adding a comma. ## Tasks - [x] Documentation has been added / updated (for bug fixes / features) - [x] Formatting issues have been fixed (run `pnpm prettier-fix` in the project root) ## Related Issues vercel#6053
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Background
This pull request adds the ability for clients to resume an ongoing chat generation stream after a network disconnect.
Summary
This pull request adds support for the
useChathook to resume an ongoing chat generation stream by exposingexperimental_resume()that can be called by any client, typically during the initial mount of the hook.The
experimental_resumefunction makes aGETrequest to the api endpoint you've initialized the hook with (or/api/chatby default) and streams the contents of the stream if it is active or fails silently if it has ended.In order for
experimental_resumeto work as intended, it requires the usage of theresumable-streampackage for stream creation and a redis instance for the package to manage the pub/sub mechanism.Verification
An example has been added at
examples/next-openai/app/use-chat-resumeto test the feature. Follow the following steps to test it end-to-end:http://localhost:3000/use-chat-resumeTasks
pnpm prettier-fixin the project root)