reactjs - 使用 React 从 monorepo 中的另一个包导入 JSX 文件时出错

Question

我创建了一个简单的项目来研究 monorepo。该示例由三个 React 应用程序组成，其中一个包含带有 Storybook 的组件库，另外两个将导入该包的组件。

但是我无法从另一个包中导入组件。当我导入一个普通函数时，没有出现错误。

Github repository

错误信息

../components/src/button/Button.js
SyntaxError: /home/thiago/Documentos/Dev/projects/learn-monorepo/packages/components/src/button/Button.js: Support for the experimental syntax 'jsx' isn't currently enabled (7:5):

   5 | function Button({label, ...rest}) {
   6 |   return (
>  7 |     <div>
     |     ^
   8 |       <button {...rest}>
   9 |         {label}
  10 |       </button>

Add @babel/preset-react (https://git.io/JfeDR) to the 'presets' section of your Babel config to enable transformation.
If you want to leave it as-is, add @babel/plugin-syntax-jsx (https://git.io/vb4yA) to the 'plugins' section to enable parsing.

按钮组件

function Button({label, ...rest}) {
  return (
    <div>
      <button {...rest}>
        {label}
      </button>
    </div>
  );
}

export { Button };

应用程序.js

import React from 'react';
import { Button } from '@project/components';

function App() {
  return (
    <div>
      <h1>Hello World - App 01</h1>
      <Button label="Button"/>
    </div>
  );
}

export default App;

包.json

{
  "name": "project",
  "version": "1.0.0",
   "main": "build/index.js",
  "author": "thiago <thenrique2012@gmail.com>",
  "license": "MIT",
  "private": true,
  "workspaces": {
    "packages": ["packages/*"]
  },
  "babel": {
    "presets": [
      "@babel/preset-react"
    ],
    "plugins": [
      "@babel/plugin-syntax-jsx"
    ]
  },
  "scripts": {
    "bootstrap": "lerna bootstrap",
    "start:app-01": "lerna run --scope @project/app-01 start",
    "start:app-02": "lerna run --scope @project/app-02 start",
    "start:storybook": "lerna run --scope @project/components storybook",
    "start:web": "yarn start:app-01 & yarn start:app-02 & yarn start:storybook"
  },
  "devDependencies": {
    "@babel/plugin-syntax-jsx": "^7.12.1",
    "@babel/preset-react": "^7.12.10",
    "babel-loader": "8.1.0",
    "lerna": "^3.22.1"
  }
}

Answer 1

你得到错误是因为你没有转译你共享的 React 组件。使用 create-react-app 有一些(非官方的)解决方案。其中之一是使用 react-app-rewired 和 customize-cra。将 lthem 安装为开发依赖项并将 config-overrides.js 文件添加到 create-react-app 的根目录:

var path = require('path')
const { override, babelInclude } = require('customize-cra')

module.exports = function (config, env) {
  return Object.assign(
    config,
    override(
      babelInclude([
        /* transpile (converting to es5) code in src/ and shared component library */
        path.resolve('src'),
        path.resolve('../components'),
      ])
    )(config, env)
  )
}

然后在您的脚本中使用 react-app-rewired 而不是 react-scripts 来启动和构建项目:

"scripts": {
        "start": "react-app-rewired start",
        "build-prod": "react-app-rewired build",
        "build": "react-app-rewired build",
        "test": "react-app-rewired test",
        "eject": "react-scripts eject"
},