webpack.config.js

const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');

module.exports = {
  entry: {
    main: './src/index.js',
  },
  output: {
    filename: '[name].[hash].js',
    path: path.join(__dirname, '/dist'),
  },
  mode: 'production',
  optimization: {
    splitChunks: {
      chunks: 'all',
      minSize: 500,
      automaticNameDelimiter: '_',
    },
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader',
        },
      },
      {
        test: /\.html$/,
        use: [
          {
            loader: 'html-loader',
            options: {
              minimize: true,
            },
          },
        ],
      },
      {
        test: /\.(png|svg|jpg|gif)$/,
        use: ['file-loader'],
      },
      {
        test: /\.scss$/,
        use: ['style-loader', 'css-loader', 'sass-loader'],
      },
    ],
  },
  plugins: [
    new HtmlWebpackPlugin({
      template: './public/index.html',
      filename: './index.html',
      chunks: ['main', 'vendors_main'],
    }),
    new MiniCssExtractPlugin({
      filename: '[name].[hash].css',
    }),
  ],
};