webpack.config.js

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

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

module.exports = {
  mode: isDevelopment ? 'development' : 'production',
  entry: './src/index.tsx',
  devServer: {
    hot: true,
    historyApiFallback: true
  },
  target: 'web',
  output: {
    filename: 'bundle.[hash].js',
    publicPath: '/',
    path: path.resolve(__dirname, 'dist')
  },
  plugins: [
    new HtmlWebpackPlugin({
      template: './src/index.html',
      favicon: './src/assets/favicon.png'
    }),
    isDevelopment && new webpack.HotModuleReplacementPlugin(),
    isDevelopment && new ReactRefreshWebpackPlugin()
  ].filter(Boolean),
  resolve: {
    modules: [__dirname, 'src', 'node_modules'],
    extensions: ['*', '.js', '.jsx', '.tsx', '.ts']
  },
  module: {
    rules: [
      {
        test: /\.ts$|tsx/,
        exclude: /node_modules/,
        loader: require.resolve('babel-loader'),
        options: {
          plugins: [
            isDevelopment && require.resolve('react-refresh/babel')
          ].filter(Boolean)
        }
      },
      {
        test: /\.css|scss$/,
        use: [
          'style-loader',
          {
            loader: 'css-loader'
          },
          {
            loader: 'sass-loader',
            options: {
              additionalData: '@import "src/variables.scss";'
            }
          }
        ]
      },
      {
        test: /\.png|svg|jpg|gif$/,
        use: ['file-loader'],
        // for cases like 'svg.js'
        exclude: [
          /\.js$/
        ]
      },
      {
        test: /\.md$/,
        use: 'raw-loader'
      }
    ]
  }
}