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Support streaming delta.reasoning_content in WebUI #15052

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Support streaming delta.reasoning_content in WebUI #15052

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3ed3479
Support streaming delta.reasoning_content in WebUI
mostlygeek Aug 3, 2025
28d43a8
update public/index.html.gz with changes
mostlygeek Aug 3, 2025
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25 changes: 24 additions & 1 deletion tools/server/webui/src/utils/app.context.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -249,14 +249,37 @@ export const AppContextProvider = ({
throw new Error(body?.error?.message || 'Unknown error');
}
const chunks = getSSEStreamAsync(fetchResponse);
let thinkingTagOpen = false;
for await (const chunk of chunks) {
// const stop = chunk.stop;
if (chunk.error) {
throw new Error(chunk.error?.message || 'Unknown error');
}

const reasoningContent = chunk.choices[0].delta.reasoning_content;
if (reasoningContent) {
if (pendingMsg.content === null || pendingMsg.content === '') {
thinkingTagOpen = true;
pendingMsg = {
...pendingMsg,
content: '<think>' + reasoningContent,
};
} else {
pendingMsg = {
...pendingMsg,
content: pendingMsg.content + reasoningContent,
};
}
}

const addedContent = chunk.choices[0].delta.content;
const lastContent = pendingMsg.content || '';
let lastContent = pendingMsg.content || '';
if (addedContent) {
if (thinkingTagOpen) {
lastContent = lastContent + '</think>';
thinkingTagOpen = false;
}

pendingMsg = {
...pendingMsg,
content: lastContent + addedContent,
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