fix(llm): restore OpenAI reasoning streams (#28552)

2026-05-20 21:02:59 -04:00
parent 93131b6e4c
commit 16fb6dac8d
9 changed files with 172 additions and 15 deletions
@@ -127,6 +127,7 @@ type OpenAIChatToolCallDelta = Schema.Schema.Type<typeof OpenAIChatToolCallDelta

 const OpenAIChatDelta = Schema.Struct({
  content: optionalNull(Schema.String),
+  reasoning_content: optionalNull(Schema.String),
  tool_calls: optionalNull(Schema.Array(OpenAIChatToolCallDelta)),
 })

@@ -324,6 +325,9 @@ const step = (state: ParserState, event: OpenAIChatEvent) =>

    let lifecycle = state.lifecycle

+    if (delta?.reasoning_content)
+      lifecycle = Lifecycle.reasoningDelta(lifecycle, events, "reasoning-0", delta.reasoning_content)
+
    if (delta?.content) lifecycle = Lifecycle.textDelta(lifecycle, events, "text-0", delta.content)

    for (const tool of toolDeltas) {