webpack.prod.config.js

const path = require('path')
const HtmlWebpackPlugin = require('html-webpack-plugin')
const ESLintPlugin = require('eslint-webpack-plugin')
const dotenv = require('dotenv')
const { DefinePlugin } = require('webpack')
const { CleanWebpackPlugin } = require('clean-webpack-plugin')

module.exports = {
  mode: 'production',
  entry: './index.web.js',
  output: {
    path: path.resolve(__dirname, 'build'),
    filename: '[name].[contenthash].js',
    publicPath: ''
  },
  module: {
    rules: [
      {
        test: /\.(js|ts)x?$/i,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader',
          options: {
            cacheDirectory: true,
            presets: ['module:metro-react-native-babel-preset'],
            plugins: [
              'react-native-web',
              [
                'module-resolver',
                {
                  alias: {
                    '^react-native$': 'react-native-web'
                  }
                }
              ]
            ]
          }
        }
      },
      {
        test: /\.(png|svg|jpg|git)$/,
        use: ['file-loader']
      }
    ]
  },
  resolve: {
    alias: {
      'react-native$': 'react-native-web'
    },
    extensions: ['.web.js', '.jsx', '.js']
  },
  optimization: {
    minimize: true,
    splitChunks: {
      chunks: 'all'
    }
  },
  plugins: [
    new HtmlWebpackPlugin({
      template: 'public/index.html'
    }),
    new ESLintPlugin({
      extensions: ['js', 'jsx']
    }),
    new DefinePlugin({
      'process.env': JSON.stringify(dotenv.config().parsed)
    }),
    new CleanWebpackPlugin()
  ]
}