TypeError：...不是构造函数

Question

我正在使用量角器+打字稿。以下是我的代码

以下是我的eaApp_spec.ts

  import {browser, element, ElementFinder,by} from 'protractor';
     import { HomePage } from "./PageObjects/HomePage";

     describe("Going to write first test", () => {

     var homePage = new HomePage();

     it("should pass without any issue", () => {

        //Open browser
     homePage.openBrowser("http://localhost:8808/");

        //Get the headings
     homePage.getAllLinks();

        //Click the first heading
     homePage.clickFirstLink();
    });

    });

我正在尝试实现POM，以下是我的HomePage.ts

import { browser, element, ElementFinder, by, $ } from 'protractor';

export class HomePage
{
  heading= element(by.xpath("//div[@class='well hoverwell 
  thumbnail']/h2[contains(text(),'Selenium Framework development')]"));

  headings= $(".well.hoverwell.thumbnail>h2");

  openBrowser(url:string)
  {
     browser.get(url);
  }

  getAllLinks()
  {
     this.headings.getText().then((text) =>{
         console.log("The links are" + text);

   });
  }

  clickFirstLink()
  {
     this.heading.click();
  }
}

这是我的eaApp_spec.js文件，在conf.js文件的规范中提到，最终将运行

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var HomePage_1 = require("./PageObjects/HomePage");
describe("Going to write first test", function () {
    //Globally
    var homePage = new HomePage_1.HomePage();
    it("should pass without any issue", function () {
        //Open browser
        homePage.openBrowser("http://localhost:8808/");
        //Get the headings
        homePage.getAllLinks();
        //Click the first heading
        homePage.clickFirstLink();
    });
});

当我运行量角器conf.js时，我收到一个错误：

  

TypeError：HomePage_1.HomePage不是构造函数