webpack.config.js

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

module.exports = {
  entry: './index.js',
  mode: 'development',
  output: {
    path: path.resolve(__dirname, './build'),
    filename: 'index_bundle.js',
    publicPath: '/'
  },
  target: 'web',
  devServer: {
    port: '8080',
    static: {
      directory: path.join(__dirname, 'public')
    },
    open: true,
    hot: true,
    liveReload: true,
    historyApiFallback: true,
    server: 'http'
  },
  resolve: {
    extensions: ['.js', '.jsx', '.json'],
  },
  module: {
    rules: [
      {
        test: /\.(js|jsx)$/, 
        exclude: /node_modules/, 
        use: 'babel-loader',
        // Error thrown when used with use, but use commented out and options commented in throws another error ('properties options are unknown')
        // options: {
        //   presets:
        //   ['@babel/env','@babel/preset-react']
        // }
      },
      {
        test: /\.s?css/,
        use: ['style-loader', 'css-loader', 'sass-loader'],
      },
    ],
  },
  plugins: [
    new HtmlWebpackPlugin({
      title: 'Development',
      template: path.join(__dirname, 'public', 'index.html')
    })
  ]
};