fab-manager/config/webpack/development.js

process.env.NODE_ENV = process.env.NODE_ENV || 'development';

const ReactRefreshWebpackPlugin = require('@pmmmwh/react-refresh-webpack-plugin');
const environment = require('./environment');

const isWebpackDevServer = process.env.WEBPACK_DEV_SERVER;

// plugins
if (isWebpackDevServer) {
  environment.plugins.append(
    'ReactRefreshWebpackPlugin',
    new ReactRefreshWebpackPlugin({
      overlay: {
        sockPort: 3035
      }
    })
  );
}

module.exports = environment.toWebpackConfig();