Function transformOpenAIResponseChoice

test/harness/replayingCapiProxy.ts:1211–1228

(
  choices: ChatCompletion.Choice[],
)

// Transforms a single OpenAI-style inbound response message into normalized form
function transformOpenAIResponseChoice(
  choices: ChatCompletion.Choice[],
): NormalizedMessage[] {
  // Maps each choice to a separate assistant message.
  // This is clearly wrong, since choices are meant to be alternatives (from which the client
  // should pick one). However CAPI frequently returns collections of tool calls as separate choices,
  // and our chat-completion-client.ts logic handles this by treating them as sequential messages.
  // So, we have to do the same thing here.
  return choices.map((choice) => {
    const tool_calls =
      choice.message.tool_calls?.map(transformOpenAIToolCall) ?? [];
    const msg: NormalizedMessage = { role: "assistant" };
    msg.content = choice.message.content ?? undefined;
    msg.refusal = choice.message.refusal ?? undefined;
    if (tool_calls.length) msg.tool_calls = tool_calls;
    return msg;
  });
}

function transformOpenAIToolCall(tc: {
  id: string;