webpack.config.js

const path = require("path");
const HtmlWebpackPlugin = require('html-webpack-plugin')
const ReactRefreshWebpackPlugin = require('@pmmmwh/react-refresh-webpack-plugin');


const isDevelopment = process.env.NODE_ENV !== 'production';

module.exports = {
  mode: isDevelopment ? 'development' : 'production',
  devtool: isDevelopment ? 'eval-source-map' : 'source-map',
  entry: path.resolve(__dirname, "src", "index.tsx"),
  output: {
    path: path.resolve(__dirname, "dist"),
    filename: "bundle.js",
  },

  devServer: {
    static: {
      directory: path.resolve(__dirname, 'public')
    },
    hot: true,
    port: 3333
  },

  plugins:[

    new ReactRefreshWebpackPlugin(),

    new HtmlWebpackPlugin({
        template: path.resolve(__dirname, 'public', 'index.html')
    })
    
  ].filter(Boolean),
 
  resolve: {
    extensions: ['.js', '.jsx', '.ts', '.tsx'],
  },
  module: {
    rules: [
        {
            test: /\.(j|t)sx$/,
            exclude: /node_modules/,
            use: {
              loader: require.resolve('babel-loader'),
            options: {
              plugins: [isDevelopment && require.resolve('react-refresh/babel')].filter(Boolean),
            }
            }
        },
        {
          test: /\.scss$/,
          exclude: /node_modules/,
          use: ['style-loader', 'css-loader', 'sass-loader']
      }
    ]
  }
};