webpack.config.js

// path and webpack
const path = require('path')
const webpack = require('webpack')

// webpack plugins
const BundleTracker = require('webpack-bundle-tracker')
const VueLoaderPlugin = require('vue-loader/lib/plugin')
const MiniCssExtractPlugin = require('mini-css-extract-plugin')

// configure dev mode because of absurdly misleading webpack documentation

module.exports = {
  entry: {
    'index': './sitemedia/js/index.js',
  },
  output: {
    path: path.resolve(__dirname, 'build'),
    filename: 'js/[name]-[hash].js'
  },
  module: {
    rules: [
      {
        test: /\.css$/,
        use: [
          'vue-style-loader',
          'css-loader',
          'postcss-loader'
        ]
      },
      {
        test: /\.scss$/,
        use: [
          process.env.NODE_ENV !== 'production' ? 'vue-style-loader' : MiniCssExtractPlugin.loader,
          'css-loader',
          'sass-loader'
        ],
      },
      {
        test: /\.vue$/,
        loader: 'vue-loader',
        options: {
          loaders: {
            // Since sass-loader (weirdly) has SCSS as its default parse mode, we map
            // the "scss" and "sass" values for the lang attribute to the right configs here.
            // other preprocessors should work out of the box, no loader config like this necessary.
            'scss': [
              'vue-style-loader',
              'css-loader',
              'sass-loader'
            ]
          }
          // other vue-loader options go here
        }
      },
      {
        test: /^(?!.*\.spec\.js$).*\.js$/,
        use:
          process.env.NODE_ENV === 'development' ?
            [
              {loader: 'istanbul-instrumenter-loader', options: { esModules: true }},
              'babel-loader'
            ]
            : ['babel-loader'],
        exclude: /node_modules/
      },
      {
        test: /\.(png|jpg|gif|svg)$/,
        loader: 'file-loader',
        options: {
          name: '[name].[hash].[ext]',
        }
      }
    ]
  },
  resolve: {
    alias: {
      'vue$': 'vue/dist/vue.esm.js'
    },
    extensions: ['*', '.js', '.vue', '.json']
  },
  devServer: {
    contentBase: path.join(__dirname, 'sitemedia'),
    hot: true,
    compress: true,
    port: 3000,
    allowedHosts: ['localhost'],
    headers: {
      'Access-Control-Allow-Origin': '*',
      'Access-Control-Allow-Methods': 'GET, POST, PUT, DELETE, PATCH, OPTIONS',
      'Access-Control-Allow-Headers': 'X-Requested-With, content-type, Authorization'
    },
    historyApiFallback: true,
    noInfo: true,
    overlay: true
  },
  performance: {
    hints: false
  },
  plugins: [
    new BundleTracker({filename: './webpack-stats.json'}),
    new VueLoaderPlugin(),
    new MiniCssExtractPlugin({
      filename: 'css/[name]-[hash].css'
    })
  ]
}

if (process.env.NODE_ENV !== 'production') {
  module.exports.mode = process.env.NODE_ENV
  module.exports.output.publicPath = 'http://localhost:3000/'
  module.exports.devtool = '#eval-source-map'

} else {
  module.exports.output.publicPath = '/static/'
}