Type '{ content: string | null; refusal: string | null; role: "assistant"; audio?: OpenAI.Chat.Completions.ChatCompletionAssistantMessageParam.Audio | null; name?: string; tool_calls?: OpenAI.Chat.Completions.ChatCompletionMessageToolCall[]; }' is not assignable to type 'ChatCompletionMessage' with 'exactOptionalPropertyTypes: true'. Consider adding 'undefined' to the types of the target's properties.