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模块构建失败（来自./node_modules/babel-loader/lib/index.js）：错误：找不到模块'babel-preset-react'

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在尝试使用Webpack4和Babel7构建反应应用程序时，我遇到了以下错误 .

./src/index.js中的错误模块构建失败（来自./node_modules/babel-loader/lib/index.js）：错误：无法从'/Users/me/Desktop/reflask'找到模块'babel-preset-react' - 如果要解析"react"，请使用"module:react" - 你有没有是的"@babel/react"？ at function.module.exports [as sync]（/Users/me/Desktop/reflask/node_modules/resolve/lib/sync.js:43:15）at resolveStandardizedName（/ Users / me / Desktop / reflask / node_modules / @ babel /core/lib/config/files/plugins.js:101:31）在resolvePreset（/Users/me/Desktop/reflask/node_modules/@babel/core/lib/config/files/plugins.js:58:10） at createPreset（/Users/me/Desktop/reflask/node_modules/@babel/core/lib/config/files/plugins.js:77:20）at createDescriptor（/ Users / me / Desktop / reflask / node_modules / @ babel / core / lib / config / config-descriptors.js：154：9）items.map（/Users/me/Desktop/reflask/node_modules/@babel/core/lib/config/config-descriptors.js:109:50 ）在createPresetDescriptors（/ Users / me / Desktop /）的createDescriptors（/Users/me/Desktop/reflask/node_modules/@babel/core/lib/config/config-descriptors.js:109:29）的Array.map（）处reflask/node_modules/@babel/core/lib/config/config-descriptors.js：101：10）在passPerPreset（/ Users / me / Desktop / reflask / node_modules / @ babel / core / lib / config / config-descriptors . JS：58：96） @ multi（webpack）-dev-server / client？ http://localhost:8080 ./src main [1]

我已尝试删除node_modules文件夹并使用以下内容重新安装依赖项 .

Terminal

rm -rf node_modules/
npm install

Configuration

package.json

{
  "name": "reflask",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "start": "webpack-dev-server --open --mode development",
    "build": "webpack"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "@babel/core": "^7.1.0",
    "@babel/preset-env": "^7.1.0",
    "@babel/preset-react": "^7.0.0",
    "babel-loader": "^8.0.2",
    "html-loader": "^0.5.5",
    "html-webpack-plugin": "^3.2.0",
    "prop-types": "^15.6.2",
    "webpack": "^4.19.1",
    "webpack-cli": "^3.1.1",
    "webpack-dev-server": "^3.1.9"
  },
  "dependencies": {
    "bootstrap": "^4.1.3",
    "react": "^16.5.2",
    "react-bootstrap": "^0.32.4",
    "react-dom": "^16.5.2",
    "react-router-dom": "^4.3.1"
  }
}

webpack.config.js

const HtmlWebPackPlugin = require("html-webpack-plugin");
module.exports = {
    module: {
        rules: [
            {
                test: /\.js$/,
                exclude: /node_modules/,
                use: {
                    loader: "babel-loader",
                    options: {
                        presets: ['react']
                    }
                }
            },
            {
                test: /\.html$/,
                use: [
                    {
                        loader: "html-loader"
                    }
                ]
            }
        ]
    },
    plugins: [
        new HtmlWebPackPlugin({
            template: "./src/index.html",
            filename: "./index.html"
        })
    ]
};

index.js

import React from 'react';
import ReactDOM from 'react-dom';
import App from './js/components/App.jsx';
import registerServiceWorker from './registerServiceWorker';

ReactDOM.render(<App />, document.getElementById('root'));
registerServiceWorker();

.babelrc

{
  "presets": ["@babel/preset-env", "@babel/preset-react"]
}
javascript node.js reactjs webpack babel

3 回答

  • 1

    在你的webpack配置中你是否已经尝试 @babel/preset-react 而不仅仅是 react ？

    顺便说一句 . 你测试 /\.js$/ 更好的测试 /\.jsx?$/ （x？表示x是可选的），因为你在index.js中导入.jsx文件

    不

    options: {
    presets: ['react']
}

    但

    options: {
    presets: ['@babel/preset-react']
}
    回复于
  • 3

    在这里面放置 . 根据目录的.babelrc文件

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

    并从babel-loader webpack cfg中删除预设

    options: {
  presets: ['react']
}
    回复于
  • 0

    我最后用这个设置做了，（因为es2015已被更改https://www.npmjs.com/package/babel-preset-es2015）现在！

    和预设 package.json 或 .babelrc 或 babel.config ::

    使用：{
    装载机：'babel-loader'，
    选项：{
    预设：['@ babel / react'，'@ babel / preset-env']，
    插件：['@ babel / plugin-proposal-class-properties']
    }
    }

    和..

    “devDependencies”：{
    “@ babel / cli”：“^ 7.1.5”，
    “@ babel / core”：“^ 7.1.6”，
    “@ babel / plugin-proposal-class-properties”：“^ 7.1.0”，
    “@ babel / plugin-transform-react-constant-elements”：“^ 7.0.0”，
    “@ babel / plugin-transform-react-inline-elements”：“^ 7.0.0”，
    “@ babel / preset-env”：“^ 7.1.6”，
    “@ babel / preset-react”：“^ 7.0.0”，
    “@ babel / register”：“^ 7.0.0”，
    “@ babel / runtime”：“^ 7.1.5”，
    “babel-eslint”：“^ 8.2.6”，
    “babel-loader”：“^ 8.0.4”，
    “babel-node”：“^ 6.5.3”，
    “babel-plugin-react-transform”：“^ 3.0.0”，
    “babel-plugin-transform-class-properties”：“^ 6.24.1”，
    “babel-plugin-transform-react-pure-class-to-function”：“^ 1.0.1”，
    “babel-plugin-transform-react-remove-prop-types”：“^ 0.4.20”，
    “babel-polyfill”：“^ 6.26.0”，
    “babel-preset-env”：“^ 1.7.0”，
    “babel-preset-es2015”：“^ 6.24.1”，
    “babel-preset-react”：“^ 6.24.1”，
    “webpack”：“^ 4.26.1”
    }

    以及您调用预设示例的代码：

    "theme:build": "babel theme/src -d theme/dist --presets @babel/react --plugins transform-class-properties --quiet && npm run webpack:store",

    预设@ babel / react

    在github非常讨论这个主题的论坛！

    回复于

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