webpack.config.karma.js

var path = require('path')
var webpack = require('webpack')
const nodeExternals = require('webpack-node-externals')
const { VueLoaderPlugin } = require('vue-loader')
var MiniCssExtractPlugin = require('mini-css-extract-plugin')
const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin

module.exports = {
  // entry: ['./src/components/Editor.vue'],
  entry: './src/main.js',
  output: {
    path: path.resolve(__dirname, './dist'),
    publicPath: '/dist/',
    filename: 'build.js',
  },
  resolve: {
    alias: {
      vue$: 'vue/dist/vue.esm.js',
      '@': path.resolve(__dirname, 'src'),
    },
  },
  module: {
    rules: [
      {
        test: /\.vue$/,
        loader: 'vue-loader',
      },
      {
        test: /\.js$/,
        loader: 'babel-loader',
        exclude: /node_modules/,
      },
      {
        test: /\.(png|jpg|gif|svg)$/,
        loader: 'file-loader',
        options: {
          name: '[name].[ext]?[hash]',
        },
      },
      {
        test: /\.css$/,
        use: [
          process.env.NODE_ENV !== 'production' ? 'vue-style-loader' : MiniCssExtractPlugin.loader,
          'css-loader',
        ],
      },
      {
        test: /\.styl(us)?$/,
        use: ['vue-style-loader', 'css-loader', 'stylus-loader'],
      },
      {
        test: /\.s(c|a)ss$/,
        use: [
          'vue-style-loader',
          'css-loader',
          {
            loader: 'sass-loader',
            // Requires sass-loader@^8.0.0
            options: {
              implementation: require('sass'),
              sassOptions: {
                fiber: require('fibers'),
                indentedSyntax: true, // optional
              },
            },
          },
        ],
      },
    ],
  },
  devServer: {
    historyApiFallback: true,
    noInfo: true,
  },
  performance: {
    hints: false,
  },
  devtool: '#eval-source-map',
  // devtool: 'inline-source-map',
  plugins: [
    new VueLoaderPlugin(),
    new MiniCssExtractPlugin({
      filename: 'style.css',
    }),
    // new BundleAnalyzerPlugin()
  ],
}

if (process.env.NODE_ENV === 'test') {
  // module.exports.externals = [require('webpack-node-externals')()]
  module.exports.devtool = 'eval'
  module.exports.mode = 'development'
}