Babel无法从当前目录上方的文件中转译JSX

时间:2019-07-17 13:38:33

标签: reactjs babel

我设置了具有文件结构的monorepo:

/root

  /-ProjectA

  /-ProjectB

  /-common

在/ ProjectA中,我有一个React应用,该应用从/ common导入文件。当我尝试在Webpack Dev Server中启动它时,从Babel-Loader收到一条错误消息,提示导入的JSX所在的公用文件中存在编译错误。

如果我将通用文件移到ProjectA并从那里导入,那么一切正常,因此该特定文件没有问题(此外,这是一个非常简单的示例)。

/common/index.js(这是此目录中唯一的文件)

import React from 'react';
export default () => <span>Hello, World!</span>;

/ProjectA/index.js

import React from 'react';
import ReactDOM from 'react-dom';
import Hello from '../common';

const App = () => <div><Hello /></div>;
ReactDOM.render(<App />, document.querySelector('#root'));

/ProjectA/.babelrc

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

/ProjectA/webpack.config.js

{
  test: /\.(js|jsx)$/,
  exclude: /node_modules/,
  include: [
    path.resolve('.'),
    path.resolve('../common'),
  ],
  use: {
    loader: 'babel-loader'
  }
}

/ProjectA/package.json

{
  "dependencies": {
    "react": "^16.8.6",
    "react-dom": "^16.8.6"
  },
  "devDependencies": {
    "@babel/core": "^7.5.4",
    "@babel/preset-env": "^7.5.4",
    "@babel/preset-react": "^7.0.0",
    "babel-loader": "^8.0.6",
    "html-loader": "^0.5.5",
    "html-webpack-plugin": "^3.2.0",
    "webpack": "^4.35.3",
    "webpack-cli": "^3.3.6",
    "webpack-dev-server": "^3.7.2"
  }
}

为什么babel无法从当前目录之外的文件进行转译?有没有解决的办法,或者我的配置有问题?

1 个答案:

答案 0 :(得分:0)

将此行添加到webpack.config.js

 devServer: { contentBase: path.join(__dirname, "public") }

将此脚本添加到package.json

"scripts":{
"dev-server": "webpack-dev-server",
 }

现在此命令应运行您的应用程序。

npm run dev-server