OpenAI Chat Completion Chunk

export interface OpenAIToolCallChunkFunction {
  name?: string;
  arguments?: string;
}

export interface OpenAIToolCallChunk {
  index: number;
  id?: string;
  type?: "function";
  function?: OpenAIToolCallChunkFunction;
}

export interface OpenAIChatCompletionChunkDelta {
  role?: "system" | "user" | "assistant" | "tool";
  content?: string | null;
  tool_calls?: OpenAIToolCallChunk[];
}

export interface OpenAIChatCompletionChunkChoice {
  index: number;
  delta: OpenAIChatCompletionChunkDelta;
  finish_reason: string | null;
}

export interface OpenAIChatCompletionChunk {
  id: string;
  object: "chat.completion.chunk";
  created: number;
  model: string;
  choices: OpenAIChatCompletionChunkChoice[];
  system_fingerprint: string | null;
}