webpack.config.js

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

module.exports = {
  entry: './src/index.jsx',
  plugins: [
    new CleanWebpackPlugin(),
    new HtmlWebpackPlugin({
      template: `${__dirname}/src/index.html`,
      filename: 'index.html',
    }),
  ],
  output: {
    filename: '[name].[hash].js',
    path: path.resolve(__dirname, 'build'),
    publicPath: '/',
  },
  module: {
    rules: [
      {
        test: /\.js(x?)$/,
        include: [path.resolve(__dirname, 'src')],
        loader: 'babel-loader',
      },
      {
        test: /\.scss$/i,
        use: ['style-loader', 'css-loader', 'sass-loader'],
      },
    ],
  },
  resolve: {
    extensions: ['.js', '.jsx', '.scss'],
  },
  devServer: {
    historyApiFallback: true,
  },
};