我成功地连接并写入我的MongoDB集合，但有一个类型错误，我无法弄清楚。下面的代码和错误：

interface Movie {
  id: number;
  title: string;
  createdAt?: Date;
  ...
}

...

const getCacheConn = async (): Promise<Collection<Document>> => {
  const client = await MongoClient.connect(
    `mongodb+srv://username:[email protected]/${mydb}?retryWrites=true&w=majority`
  );

  const dbConn = client.db(mydb);

  return dbConn.collection(mycache);
};

const cacheMovies = async (movies: Movie[]) => {
  ...
  const cacheConn = await getCacheConn();
  cacheConn.insertMany(movies); // IDE highlights "movies" here and shows error.
};

错误：

Argument of type 'Movie[]' is not assignable to parameter of type 'OptionalId<Document>[]'.
  Type 'Movie' is not assignable to type 'OptionalId<Document>'.
    Type 'Movie' is missing the following properties from type 'Pick<Document, keyof Document>': close, normalize, URL, alinkColor, and 246 more.

我是不是漏了什么？Promise<Collection<Document>>可能是集合的错误类型吗？我四处搜索，但找不到有关此错误的信息。