Skip to content

Stabilized message.id during streamText call with multiple steps #6267

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
wants to merge 1 commit into
base: main
Choose a base branch
from
Open

Stabilized message.id during streamText call with multiple steps #6267

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
8 changes: 6 additions & 2 deletions packages/ui-utils/src/process-chat-response.ts
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -60,6 +60,7 @@ export async function processChatResponse({
parts: [],
};

let hasIdBeenEstablished = replaceLastMessage;
let currentTextPart: TextUIPart | undefined = undefined;
let currentReasoningPart: ReasoningUIPart | undefined = undefined;
let currentReasoningTextDetail:
Expand Down Expand Up @@ -364,9 +365,12 @@ export async function processChatResponse({
currentReasoningTextDetail = undefined;
},
onStartStepPart(value) {
// keep message id stable when we are updating an existing message:
if (!replaceLastMessage) {
// keep message id stable when we've already received a messageId
// need to stay consistent with behavior of appendResponseMessages
// in order for client and server to be in sync
if (!hasIdBeenEstablished) {
message.id = value.messageId;
hasIdBeenEstablished = true;
}

// add a step boundary part to the message
Expand Down