导出的函数未定义

时间:2019-03-20 11:07:51

标签: javascript typescript mocha babeljs commonjs

我在Typescript中的Mocha测试遇到问题,我担心它与Babel有关,但是我真的不确定发生了什么。

基本上,我有一个正在文件中导出的功能

// src/my-ts-lib/tests/components/factoryMocks/componentConfigMocks.ts

...

export function getRandomConfig(type?: string): ComponentConfig {
  const randomComponentType = type || randomType();
  return {
    type: randomComponentType,
    config: configLibrary[randomComponentType]
  }
}

然后导入到另一个中,由测试调用:

// src/my-ts-lib/tests/components/RouteComponent/mocks/routeMocks.ts

...

import { getRandomConfig } from '../../factoryMocks/componentConfigMocks';

..

export const getSingleRouteConfigMock = (componentType?: string): RouteProps => {
  const defaultComponentType = 'PageLayout';
  return {
    childComponent: {
      type: componentType || defaultComponentType,
      config: getRandomConfig(componentType || defaultComponentType)
    },
    pageName: randomString(),
    path: randomString(),
  };
};

...

运行测试时,出现以下错误:

RouteCompnent/mocks/routeMocks.ts:10
      config: getRandomConfig(componentType || defaultComponentType),
                                           ^
TypeError: componentConfigMocks_1.getRandomConfig is not a function
    at Object.exports.getSingleRouteConfigMock (/Users/.../routeMocks.ts:10:44)

如果我对呼叫和console.log(getRandomConfig)进行评论,则可以看到它是undefined。我不知道为什么会这样。甚至更奇怪的是,在随后的调用getSingleRouteConfigMock的测试中,相同的console.log正确地输出了该函数,意味着该函数已被导出。

我摆弄Babel,Mocha和Typescript配置,但没有成功。

这是Babel配置:

.babelrc

{
  "presets": ["@babel/preset-env", "@babel/preset-react"]
}

Mocha配置:

mocha.opts

--require ts-node/register
--watch-extensions ts tsx
--require source-map-support/register
--recursive
--require @babel/register
--require @babel/polyfill
src/**/*.spec.**

和Typescript配置:

tsconfig.json

{
   "compilerOptions": {
     "outDir": "./dist/",
     "sourceMap": true,
     "noImplicitAny": false,
     "module": "commonjs",
     "target": "es6",
     "jsx": "react"
   },
   "include": [
     "./src/**/*"
   ],
   "exclude": [
     "./src/**/*.spec.ts",
     "./src/my-ts-lib/components/**/*.spec.tsx",
     "./src/my-ts-lib/test-helpers/*"
   ],
 }

以及package.json

的相关部分
...
"dependencies": {
  ...
  "@babel/polyfill": "7.2.x",
  ...
},
"devDependencies": {
  "@babel/core": "7.2.x",
  "@babel/preset-env": "7.2.x",
  "@babel/preset-react": "7.0.x",
  "@babel/register": "7.0.x",
  "babel-loader": "8.x",
  "mocha": "3.2.x",
  ...
}

1 个答案:

答案 0 :(得分:1)

我发现我有一个循环依赖。这就是为什么它不起作用。