webpack.config.js

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

module.exports = {
  mode: process.env.NODE_ENV,
  entry: './src/client/index.js',

  // Enable sourcemaps for debugging webpack's output.
  devtool: 'source-map',

  output: {
    path: path.resolve(__dirname, 'dist'),
    publicPath: './',
    filename: 'bundle.js',
  },

  devServer: {
    host: 'localhost',
    port: 8080,
    // match the output path
    contentBase: path.resolve(__dirname, 'dist'),
    // enable HMR on the devServer
    hot: true,
    // match the output 'publicPath'
    publicPath: '/',
    // fallback to root for other urls
    historyApiFallback: true,
  },

  module: {
    rules: [
      {
        test: /\.(ts|js)x?$/,
        include: [path.resolve(__dirname, './src')],
        use: {
          loader: 'babel-loader',
          options: {
            presets: [
              '@babel/preset-env',
              '@babel/preset-react',
              // "@babel/preset-typescript",
            ],
            plugins: [
              '@babel/transform-runtime',
            ],
          },
        },
      },
      {
        test: /\.s[ac]ss$/i,
        use: ['style-loader', 'css-loader', 'sass-loader'],
      },
      {
        test: /\.(mp3|wav)$/,
        use: {
          loader: 'file-loader',
          options: {
            name: '[name].[contenthash].[ext]',
            outputPath: 'assets/audio/',
            publicPath: 'assets/audio/',
          },
        },
      },
      {
        test: /\.(png|svg|jpg|gif)$/,
        use: ['file-loader'],
      },
    ],
  },
  resolve: {
    extensions: ['.tsx', '.ts', '.js', '.jsx'],
  },
  plugins: [
    new HtmlWebpackPlugin({
      title: 'stepSeq',
      favicon: 'public/favicon-32x32.png',
    }),
  ],
};