webpack.config.js

const path = require('path')
const glob = require('glob')
const MiniCssExtractPlugin = require('mini-css-extract-plugin')
const TerserPlugin = require('terser-webpack-plugin')
const CssMinimizerPlugin = require('css-minimizer-webpack-plugin')
const CopyWebpackPlugin = require('copy-webpack-plugin')

module.exports = (env, options) => ({
  cache: true,
  optimization: {
    minimizer: [
      new TerserPlugin({ parallel: true }),
      new CssMinimizerPlugin({}),
    ],
  },
  entry: {
    app: glob.sync('./vendor/**/*.js').concat(['./js/app.js']),
  },
  output: {
    filename: '[name].js',
    path: path.resolve(__dirname, '_dist/js'),
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader',
        },
      },
      {
        test: /\.s?css$/,
        use: [
          MiniCssExtractPlugin.loader,
          {
            loader: 'css-loader',
            options: {
              url: false,
              importLoaders: 1,
            },
          },
          {
            loader: 'postcss-loader',
            options: {
              postcssOptions: {
                plugins: ['postcss-url'],
              },
            },
          },
          'sass-loader',
        ],
      },
      {
        test: /\.(png|jpg|gif|svg)$/,
        loader: 'file-loader',
        options: {
          name: '[name].[ext]',
          outputPath: '../images',
        },
      },
      {
        test: /\.(ttf|otf|eot|svg|woff2?)$/,
        loader: 'file-loader',
        options: {
          name: '[name].[ext]',
          outputPath: '../fonts',
        },
      },
      {
        test: /\.html$/,
        loader: 'file-loader',
        options: {
          name: '[name].[ext]',
          outputPath: '..',
        },
      },
    ],
  },
  resolve: {
    modules: [
      'node_modules',
      __dirname + '/js',
      __dirname + '/css',
      __dirname + '/images',
    ],
  },
  plugins: [
    new MiniCssExtractPlugin({ filename: '../css/app.css' }),
    new CopyWebpackPlugin({ patterns: [
      { from: 'static/', to: '../' },
      { from: '*.html', to: '../' },
    ] }),
  ],
})