webpack.config.js

const path = require('path');
const HtmlWebPackPlugin = require('html-webpack-plugin');
const { CleanWebpackPlugin } = require('clean-webpack-plugin');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const autoprefixer = require('autoprefixer');

const config = {
  entry: './src/scripts/index.js',
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: path.join('scripts', 'bundle.js')
  },
  module: {
    rules: [
      // Scripts
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader',
          options: {
            presets: ['@babel/preset-env'],
            sourceMaps: true
          }
        }
      },
      // index.html
      {
        test: /\.html$/,
        use: [
          {
            loader: 'html-loader',
            options: { minimize: true }
          }
        ]
      },
      // Styles
      {
        test: /\.css$|\.scss$/,
        use: [
          {
            loader: 'style-loader'
          },
          MiniCssExtractPlugin.loader,
          {
            loader: 'css-loader',
            options: {
              sourceMap: true
            }
          },
          {
            loader: 'resolve-url-loader',
            options: {
              sourceMap: true
            }
          },
          {
            loader: 'sass-loader',
            options: {
              sourceMap: true
            }
          },
          {
            loader: 'postcss-loader',
            options: {
              sourceMap: true,
              plugins: () => [autoprefixer()]
            }
          }
        ]
      },
      // Images
      {
        test: /\.(png|jpg|jpeg|gif)$/,
        use: [
          {
            loader: 'file-loader',
            options: {
              name: '[name].[ext]',
              outputPath: 'img/',
              publicPath: '../img/'
            }
          }
        ]
      },
      // Fonts
      {
        test: /\.(woff(2)?|ttf|eot|svg)(\?v=\d+\.\d+\.\d+)?$/,
        use: [
          {
            loader: 'file-loader',
            options: {
              name: '[name].[ext]',
              outputPath: 'fonts/',
              publicPath: '../fonts'
            }
          }
        ]
      }
    ]
  },
  plugins: [
    new CleanWebpackPlugin(),
    new HtmlWebPackPlugin({
      template: './src/index.html',
      filename: './index.html'
    }),
    new MiniCssExtractPlugin({
      filename: 'styles/[name].css',
      chunkFilename: 'styles/chunks/[id].css'
    })
  ]
};

module.exports = (env, argv) => {
  if (argv.mode === 'development') {
    config.devtool = 'source-map';
  }

  return config;
};