webpack.config.js

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

module.exports = {
  mode: 'production',
  entry: './src/js/index.js',
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: 'read-more-read-less.min.js',
  },
  plugins: [
    new CleanWebpackPlugin(),
    new MiniCssExtractPlugin({
      // Options similar to the same options in webpackOptions.output
      // both options are optional
      filename: 'read-more-read-less.min.css',
    }),
    new HtmlWebpackPlugin({
      title: 'Read More Read Less',
      template: './src/html/index.html',
      minify: false,
    })
  ],
  module: {
    rules: [
      {
        test: /\.(sa|sc|c)ss$/,
        use: [
          {
            loader: MiniCssExtractPlugin.loader,
            options: {
              hmr: process.env.NODE_ENV === 'development',
            },
          },
          'css-loader',
          'sass-loader',
        ],
      },
    ],
  },
};