Invalid CSS after " ": expected 1 selector or at-rule, was "{"

Question

electron-vue npm run packDev 运行项目
报错 Invalid CSS after " ": expected 1 selector or at-rule, was "{"

webpack.renderer.config.js 代码

'use strict'

process.env.BABEL_ENV = 'renderer'

const path = require('path')
const { dependencies } = require('../package.json')
const webpack = require('webpack')

const MinifyPlugin = require("babel-minify-webpack-plugin")
const CopyWebpackPlugin = require('copy-webpack-plugin')
const MiniCssExtractPlugin = require('mini-css-extract-plugin')
const HtmlWebpackPlugin = require('html-webpack-plugin')
const { VueLoaderPlugin } = require('vue-loader')

/**
 * List of node_modules to include in webpack bundle
 *
 * Required for specific packages like Vue UI libraries
 * that provide pure *.vue files that need compiling
 * https://simulatedgreg.gitbooks.io/electron-vue/content/en/webpack-configurations.html#white-listing-externals
 */
let whiteListedModules = ['vue', 'element-ui']

let rendererConfig = {
  devtool: '#cheap-module-eval-source-map',
  entry: {
    renderer: path.join(__dirname, '../src/renderer/main.js')
  },
  externals: [
  //   ...[
  //   "adbkit",
  //   'adbkit-monkey', 
  //   'adbkit-logcat', 
    
  //   "axios", "bindings", "echarts", 
  //   "electron-log",
  //    "moment", 
  //   // "node-gyp", 
  //   // "normalize.css", 
  //   // "vue-audio-native", 
  //   "vue-electron", "vue-loading-overlay", "vue-router", "vuex", "vuex-electron", 
  //   // "worker-loader",
  // ]
    ...Object.keys(dependencies || {}).filter(d => !whiteListedModules.includes(d))
  ],
  module: {
    rules: [
      {
        test: /\.scss$/,
        use: ['vue-style-loader', 'css-loader', 'sass-loader']
      },
      {
        test: /\.sass$/,
        use: ['vue-style-loader', 'css-loader', 'sass-loader?indentedSyntax']
      },
      {
        test: /\.less$/,
        use: ['vue-style-loader', 'css-loader', 'less-loader']
      },
      {
        test: /\.css$/,
        use: ['vue-style-loader', 'css-loader']
      },
      {
        test: /\.html$/,
        use: 'vue-html-loader'
      },
      {
        test: /\.js$/,
        use: 'babel-loader',
        exclude: /node_modules/
      },
      {
        test: /\.node$/,
        use: 'node-loader'
      },
      {
        test: /\.vue$/,
        use: {
          loader: 'vue-loader',
          options: {
            extractCSS: process.env.NODE_ENV === 'production',
            loaders: {
              sass: 'vue-style-loader!css-loader!sass-loader?indentedSyntax=1',
              scss: 'vue-style-loader!css-loader!sass-loader',
              less: 'vue-style-loader!css-loader!less-loader'
            }
          }
        }
      },
      {
        test: /\.(png|jpe?g|gif|svg)(\?.*)?$/,
        use: {
          loader: 'url-loader',
          query: {
            limit: 10000,
            name: 'imgs/[name]--[folder].[ext]'
          }
        }
      },
      {
        test: /\.(mp4|webm|ogg|mp3|wav|flac|aac)(\?.*)?$/,
        loader: 'url-loader',
        options: {
          limit: 10000,
          name: 'media/[name]--[folder].[ext]'
        }
      },
      {
        test: /\.(woff2?|eot|ttf|otf)(\?.*)?$/,
        use: {
          loader: 'url-loader',
          query: {
            limit: 10000,
            name: 'fonts/[name]--[folder].[ext]'
          }
        }
      }
    ]
  },
  node: {
    __dirname: process.env.NODE_ENV !== 'production',
    __filename: process.env.NODE_ENV !== 'production'
  },
  plugins: [
    new VueLoaderPlugin(),
    new MiniCssExtractPlugin({filename: 'styles.css'}),
    new HtmlWebpackPlugin({
      filename: 'index.html',
      template: path.resolve(__dirname, '../src/index.ejs'),
      templateParameters(compilation, assets, options) {
        return {
          compilation: compilation,
          webpack: compilation.getStats().toJson(),
          webpackConfig: compilation.options,
          htmlWebpackPlugin: {
            files: assets,
            options: options
          },
          process,
        };
      },
      minify: {
        collapseWhitespace: true,
        removeAttributeQuotes: true,
        removeComments: true
      },
      nodeModules: path.resolve(__dirname, '../node_modules')
    }),
    new webpack.HotModuleReplacementPlugin(),
    new webpack.NoEmitOnErrorsPlugin()
  ],
  output: {
    filename: '[name].js',
    libraryTarget: 'commonjs2',
    //path: path.join(__dirname, '../dist/app')
      path: path.join("C:/Users/liyaru/Desktop/electron-xp/resources", 'app')
  },
  resolve: {
    alias: {
      '@': path.join(__dirname, '../src/renderer'),
      'vue$': 'vue/dist/vue.esm.js'
    },
    extensions: ['.js', '.vue', '.json', '.css', '.node']
  },
  target: 'electron-renderer'
}

console.log(JSON.stringify(rendererConfig.externals, null ,2))

/**
 * Adjust rendererConfig for development settings
 */
if (process.env.NODE_ENV !== 'production') {
  rendererConfig.plugins.push(
    new webpack.DefinePlugin({
      '__static': `"${path.join(__dirname, '../static').replace(/\\/g, '\\\\')}"`
    })
  )
}

/**
 * Adjust rendererConfig for production settings
 */
if (process.env.NODE_ENV === 'production') {
  rendererConfig.devtool = ''

  rendererConfig.plugins.push(
    new MinifyPlugin(),
    new CopyWebpackPlugin([
      {
        from: path.join(__dirname, '../static'),
        to: path.join(__dirname, '../dist/app/static'),
        ignore: ['.*']
      }
    ]),
    new webpack.DefinePlugin({
      'process.env.NODE_ENV': '"production"'
    }),
    new webpack.LoaderOptionsPlugin({
      minimize: true
    })
  )
}

module.exports = rendererConfig

报错内容：
ERROR in ./src/renderer/App.vue?vue&type=style&index=0&id=635e795a&prod&lang=sass& (./node_modules/css-loader!./node_modules/vue-loader/lib/loaders/stylePostLoader.js!./node_modules/sass-loader/dist/cjs.js??ref--1-2!./node_modules/vue-loader/lib??vue-loader-options!./src/renderer/App.vue?vue&type=style&index=0&id=635e795a&prod&lang=sass&)
Module build failed (from ./node_modules/sass-loader/dist/cjs.js):

^ Invalid CSS after " ": expected 1 selector or at-rule, was "{" in C:\Users\Desktop\111\voiceprintcollection\src\renderer\App.vue (line 1, column 1) Error: ^

请问大家这个问题 怎么解决

Answer 1

根据你这个报错 在 App.vue里

“”后的CSS无效：应为1个选择器或at-rule 你仔细检查 app.vue里 css样式 又饿米有问题 。