无法在另一个文件中实例化类型脚本类。错误：ts2351

Question

问题：我似乎无法实例化我从其他文件导入的类型脚本类的新实例。

说明：我在使用快速模块的类型脚本中编写节点应用程序。这些类在外部文件中，以封装express的路由。

文件＆＃39; masterRoute.ts＆＃39;是将任何传入的http请求转发到其预期的route.ts文件。

文件＆＃39; indexRoute.ts＆＃39;是网址的预期路由文件：＆＃39; whatever.com /＆＃39;。

目标：出于学习目的，我正在尝试在MasterRoute类中创建外部IndexRoute类的实例。

示例：

indexRoute.ts

import express = require('express');
export class IndexRoute{
    private _ejsFilePath: string = 'views/index.ejs';
    private request: express.Request;
    private response: express.Response;
    constructor(request: express.Request, response: express.Response){
        this.request = request;
        this.response = response;
    }
    public renderFile(): string{
        try{
            this.response.render(this._ejsFilePath);
            return null;
        }
        catch(error){
            return error;
        }
    }
}

masterRoute.ts

import express = require('express');
import * as IndexRoute from './indexRoute';
export class MasterRoute{
    private Router: express.Router;
    constructor(){
        this.Router = new express.Router();
    }
    public onHttpRequest(request: express.Request, response: express.Response){
        // I have tried to use all of the lines below one by one. 
        // None of them work.
        // let test: IndexRoute = new IndexRoute(request, response);
        // let test: = new IndexRoute(request, response);
        // let test = IndexRoute(request, response); 
        this.Router.get('/');
    }
}