webpack.config.base.js

const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');

module.exports = {
  entry: ['./src/index.js'],
  output: {
    path: path.join(__dirname, 'dist'),
    filename: 'bewerbung.js',
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        loader: 'babel-loader',
        exclude: /node_modules/,
        options: {
          presets: [
            [
              '@babel/preset-env',
              {
                targets: [
                  'last 2 versions',
                  'not dead',
                  'not > 2%',
                  'not ie 11',
                ],
                useBuiltIns: 'entry',
                corejs: 3,
              },
            ],
            '@babel/preset-react',
          ],
          plugins: ['@babel/plugin-proposal-class-properties'],
        },
      },
      {
        test: /\.s[ac]ss$/i,
        use: ['style-loader', 'css-loader', 'sass-loader'],
        exclude: /node_modules/,
      },
      {
        test: /\.ts$/,
        loader: 'babel-loader',
        exclude: /node_modules/,
        options: {
          presets: ['@babel/preset-typescript'],
        },
      },
    ],
  },
  plugins: [
    new HtmlWebpackPlugin({
      template: './src/index.html',
    }),
  ],
};