如何对TypeScript中的所有规范文件进行默认导入？

Question

下面是一个非常简单的规范文件，用于单元测试TypeScript + React应用程序：

import * as React from "react"; // COMMON

import * as chai from "chai"; // COMMON
import * as chaiEnzyme from "chai-enzyme" // COMMON
import * as sinon from "sinon"; // COMMON
import * as sinonChai from "sinon-chai"; // COMMON

import { expect } from "chai"; // COMMON
import { shallow } from "enzyme"; // COMMON

import Hello from "./Hello";

describe("Hello", () => {

    chai.use(chaiEnzyme()); // COMMON
    chai.use(sinonChai); // COMMON

    let hello = shallow(<Hello name="Willson" />);

    it("should render correctly", () => {
        expect(hello).to.have.tagName("div");
    });

    it("should have correct prop values", () => {
        expect(hello).to.have.text("Hello, Willson");
    });

});

我看到自己在使用行，每个规范文件都使用// COMMON。在我的所有文件上，默认情况下，是否有一种与/Spec\.(ts|tsx)/**?**匹配的TypeScript方法：TypeScript

Answer 1

你可以做一件事来稍微减轻这个问题。

首先像这样创建您的common.ts：

//Collect and re-export all of your COMMON imports

import * as React from "react"; 
export {React};

import * as ReactDOM from 'react-dom';
export {ReactDOM};

//More import/exports goes here

然后，在您的spec文件中，只需要有一个导入：

import * as Common from './common';

稍后在spec文件中，您使用它们的方式如下：

private static childContextTypes = 
{
    extender: Common.React.PropTypes.object,
    form: Common.React.PropTypes.object
}

希望这能有所帮助。