webpack.prod.js

const path = require('path');
const VueLoaderPlugin = require('vue-loader/lib/plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');

module.exports = {
  mode: 'production',
  entry: './src/js/index.js',
  output: {
    filename: 'main.min.js',
    path: path.resolve(__dirname, 'dist'),
  },
  optimization: {
    minimize: true,
  },
  performance: {
    hints: 'error',
    maxEntrypointSize: 1024000,
    maxAssetSize: 1024000,
  },
  module: {
    rules: [
      {
        test: /\.vue$/,
        loader: 'vue-loader',
      },
      {
        test: /\.css$/i,
        use: ['style-loader', 'css-loader'],
      },
    ],
  },
  externals: {
    moment: 'moment',
  },
  plugins: [
    // make sure to include the plugin!
    new VueLoaderPlugin(),
    new HtmlWebpackPlugin({
      template: 'src/index.html',
      filename: 'index.html',
      minify: {
        collapseWhitespace: true,
      },
    }),
  ],
};