webpack.config.js

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

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

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

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