interface ChatCompletionStreamimport { type ChatCompletionStream } from "https://deno.land/x/openai@1.4.1/src/types.ts"; Propertiesid: stringobject: "chat.completion.chunk"created: numberchoices: { index: number; delta: { name?: string; role?: "system" | "assistant" | "user"; content?: string; }; finish_reason: string; }[]