webpack.config.js

const path = require('path');
const miniCssExtractPlugin = require('mini-css-extract-plugin')
const CopyPlugin = require("copy-webpack-plugin");

module.exports = {
  entry: './src/index.ts',
  output: {
    filename: 'bundle.js',
    path: path.resolve(__dirname, 'build'),
    clean: true,
  },
  devtool: 'source-map',
  plugins: [
    new CopyPlugin({
      patterns: [{ from: 'public' }],
    }),
    new miniCssExtractPlugin(),
  ],
  resolve: {
    extensions: ['.tsx', '.ts', '.js'],
  },
  module: {
    rules: [
      {
        mimetype: 'image/svg+xml',
        scheme: 'data',
        type: 'asset/resource',
        generator: {
          filename: 'icons/[hash].svg'
        }
      },
      {
        test: /\.tsx?$/,
        use: 'ts-loader',
        exclude: /node_modules/,
      },
      {
        test: /\.js$/,
        exclude: /(node_modules)/,
        use: ['babel-loader']
      },
      {
        test: /\.css$/i,
        use: ['style-loader', 'css-loader']
      },
      {
        test: /\.(scss)$/,
        use: [{
          // inject CSS to page
          //loader: 'style-loader'
          loader: miniCssExtractPlugin.loader
        }, {
          // translates CSS into CommonJS modules
          loader: 'css-loader'
        }, {
          // Run postcss actions
          loader: 'postcss-loader',
          options: {
            // `postcssOptions` is needed for postcss 8.x;
            // if you use postcss 7.x skip the key
            postcssOptions: {
              // postcss plugins, can be exported to postcss.config.js
              plugins: function () {
                return [
                  require('autoprefixer')
                ];
              }
            }
          }
        }, {
          // compiles Sass to CSS
          loader: 'sass-loader'
        }]
      }

    ]
  }
};