使用MongoDB的类型在我自己的定义定义文件

Question

我有打字稿进口问题：

这里是我的mydef.d.ts：

import * as mongodb from "mongodb"; 
interface UserDto { 
    _id: mongodb.ObjectID; 
    username: string; 
} 

这里是我的main.ts：

import * as mongodb from "mongodb"; 
let user: UserDto = { 
    _id: new mongodb.ObjectID("anyID"), 
    username: "Xstoudi" 
} 

但main.ts：Cannot find name UserDto。

谢谢！

Answer 1

首先你必须出口你的接口在mydef.d.ts。

import * as mongodb from "mongodb"; 
export interface UserDto { 
    _id: mongodb.ObjectID; 
    username: string; 
} 

然后，你需要进口它main.ts，导入蒙戈以同样的方式。

import * as mongodb from "mongodb"; 
import {UserDto} from "mydef"; 
let user: UserDto = { 
    _id: new mongodb.ObjectID("anyID"), 
    username: "Xstoudi" 
}