Webpack模块解析失败：意外字符“@”。

Question

我正在使用vue-cli，将一个CSS文件导入到main.js后，

import Vue from 'vue'
import App from './App.vue'
import 'element-ui/lib/theme-default/index.css'
import ElementUI from 'element-ui'


Vue.use(ElementUI);

new Vue({
  el: '#app',
  render: h => h(App)
})

控制台记录了一个错误并无法渲染。

VM818:1未捕获的错误：模块解析失败：C：\ 02-folks \ new-version \ vueproject \ fademo01 \ node_modules.1.0.2 @ element-ui \ lib \ theme-default \ index.css意外字符'@'...

我已经安装了style-loader和css loader。这是package.json文件。

{
"name": "fademo01",
  "description": "A Vue.js project",
  "author": "",
  "private": true,
  "scripts": {
    "dev": "cross-env NODE_ENV=development webpack-dev-server --open --inline --hot",
    "build": "cross-env NODE_ENV=production webpack --progress --hide-modules"
  },
  "dependencies": {
    "vue": "^2.0.1"
  },
  "devDependencies": {
    "babel-core": "^6.0.0",
    "babel-loader": "^6.0.0",
    "babel-preset-es2015": "^6.0.0",
    "cross-env": "^3.0.0",
    "css-loader": "^0.25.0",
    "element-ui": "^1.0.2",
    "file-loader": "^0.9.0",
    "style-loader": "^0.13.1",
    "vue-loader": "^9.7.0",
    "webpack": "^2.1.0-beta.25",
    "webpack-dev-server": "^2.1.0-beta.0"
  }
}

并在 webpack.config.js 中配置了 CSS

var path = require('path')
var webpack = require('webpack')

module.exports = {
  entry: './src/main.js',
  output: {
    path: path.resolve(__dirname, './dist'),
    publicPath: '/dist/',
    filename: 'build.js'
  },
  module: {
    rules: [
      {
        test: /\.vue$/,
        loader: 'vue-loader',
        options: {
          // vue-loader options go here
        }
      },
      {
        test: /\.js$/,
        loader: 'babel-loader',
        exclude: /node_modules/
      },
      {
        test: /\.css$/,
        loader: 'css-loader',
        exclude: /node_modules/
      },
       {
        test: /\.(eot|svg|ttf|woff|woff2)(\?\S*)?$/,
        loader: 'file-loader'
      },
      {
        test: /\.(png|jpg|gif|svg)$/,
        loader: 'file-loader',
        options: {
          name: '[name].[ext]?[hash]'
        }
      }
    ]
  },
  resolve: {
    alias: {
      'vue$': 'vue/dist/vue'
    }
  },
  devServer: {
    historyApiFallback: true,
    noInfo: true
  },
  devtool: '#eval-source-map'
}

if (process.env.NODE_ENV === 'production') {
  module.exports.devtool = '#source-map'
  // http://vue-loader.vuejs.org/en/workflow/production.html
  module.exports.plugins = (module.exports.plugins || []).concat([
    new webpack.DefinePlugin({
      'process.env': {
        NODE_ENV: '"production"'
      }
    }),
    new webpack.optimize.UglifyJsPlugin({
      sourceMap: true,
      compress: {
        warnings: false
      }
    }),
    new webpack.LoaderOptionsPlugin({
      minimize: true
    })
  ])
}

- W.Sun

Answer 1

我必须做几件事情：

npm install style-loader --save

我在webpack.config.js中也缺少了一些条目。

module:
...
      {
        test: /\.css$/,
        loader: 'style-loader!css-loader'
      },
      {
        test: /\.(eot|svg|ttf|woff|woff2)(\?\S*)?$/,
        loader: 'file-loader'
      },

这些 webpack.config.js 的条目在 element-ui 文档的快速入门中有记录。

- Skyguard

Answer 2

我刚刚想到了解决方法： 从webpack.config.js文件的module.rules的CSS配置元素中删除以下行。

  {
    test: /\.css$/,
    loader: 'css-loader',
    exclude: /node_modules/   //remove this line
  },

- W.Sun

Answer 3

你需要重新启动webpack-dev-server！我也遇到了这个问题，用翻译软件给你回复。

- 李春波

---

谢谢，是的，我添加了CSS加载器并重新启动了开发服务器。 - W.Sun