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export enum CommandType {  ConnectWithUri = "ConnectWithUri",  ConnectWithOptions = "ConnectWithOptions",  ListDatabases = "ListDatabases",  ListCollectionNames = "ListCollectionNames",  Find = "Find",  InsertOne = "InsertOne",  InsertMany = "InsertMany",  Delete = "Delete",  Update = "Update",  Aggregate = "Aggregate",  Count = "Count",  CreateIndexes = "CreateIndexes"}
export interface ObjectId {  $oid: string;}export function ObjectId($oid: string) {  const isLegal = /[0-9a-fA-F]{24}/.test($oid);  if (!isLegal) {    throw new Error(`ObjectId("${$oid}") is not legal.`);  }  return { $oid };}
export interface FindOptions {  findOne?: boolean;  skip?: number;  limit?: number;}