模块构建失败:错误:找不到模块'@ babel/core'

Question

所以我对webpack有点新意,因为我从未创建过我自己的工作流程,而且我正在尝试建立一个环境来首次编译ES2015 + JS和SCSS代码.出于某种原因,当我尝试编译我的webpack时,我得到了错误Module build failed: Error: Cannot find module '@babel/core'.但我安装了它npm install

Webpack.config.js

module.exports = {
    entry: './components/js/app.js',
    output: {
        filename: './dist/main.js'
    },
    module: {
        loaders: [
            {test: /\.js$/, loader: "babel-loader", exclude: /node_modules/},
            {test: /\.scss$/, loader: "style-loader!css-loader!sass-loader"}
        ],


    }
}

.babelrc

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

的package.json

{
  "name": "webpack-env",
  "version": "1.0.0",
  "description": "Webpack",
  "main": "components/js/app.js",
  "scripts": {
    "build": "webpack"
  },
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "@babel/preset-env": "^7.0.0-beta.39",
    "babel-core": "^6.26.0",
    "babel-loader": "^7.1.2",
    "css-loader": "^0.28.5",
    "node-sass": "^4.5.3",
    "sass-loader": "^6.0.6",
    "style-loader": "^0.18.2",
    "webpack": "^3.4.1"
  },
  "dependencies": {}
}

有什么我想念的吗？

Answer 1

好好经过一些挖掘后我发现了问题.问题是我安装了较新版本的babel,@babel/preset-env这是babel版本7.版本6不是那样工作(我相信,不确定),对于版本6,你必须运行npm install --save-dev babel-preset-env而不是npm install --save-dev @babel/preset-env像我一样.

.babelrc文件变为

{
  "presets": ["env"]
}