webpack.config.js

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

module.exports = {
  context: __dirname,

  entry: [
    './src/index.js',
  ],

  output: {
    filename: 'bundle.js',
    path: path.join(__dirname, 'public'),
  },

  devtool: 'source-map',

  devServer: {
    contentBase: './public',
    historyApiFallback: true,
  },

  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: [/node_modules/],
        use: [{
          loader: 'babel-loader',
          options: { presets: ['es2015', 'react'] },
        }],
      },
      {
        test: /\.css$/,
        exclude: /node_modules/,
        use: ['style-loader', {
          loader: 'css-loader',
          options: {
            modules: true,
            importLoaders: 1,
            localIdentName: '[path][name]__[local]--[hash:base64:5]',
          },
        }],
      },
    ],
  },

  plugins: [
    new HtmlWebpackPlugin({
      template: './src/index.html',
    }),
  ],
};