webpack.config.js

const path = require('path');
const webpack = require('webpack');
const pkg = require('./package.json');

module.exports = (env) => {
  const mode = env.production ? 'production' : 'development';
  return {
    entry: env.production ? './src/index.ts' : './src/dev.ts',
    mode,
    module: {
      rules: [
        {
          test: /\.tsx?$/,
          use: 'ts-loader',
          exclude: /node_modules/,
        },
      ],
    },
    resolve: {
      extensions: ['.tsx', '.ts', '.js'],
      fallback: {
        "fs": false,
        "tls": false,
        "net": false,
        "path": false,
        "zlib": false,
        "http": false,
        "https": false,
        "stream": false,
        "crypto": false,
        'path': require.resolve('path-browserify'), // only the posix part
      } 
    },
    output: {
      filename: 'react-browser-loader.js',
      path: path.resolve(__dirname, './dist'),
      library: {
        type: 'umd',
        name: `react-browser-loader`,
      },
    },
    plugins: [
      new webpack.ProvidePlugin({
        process: 'process/browser',
      }),
      new webpack.DefinePlugin({
          'process.env.NODE_ENV': JSON.stringify(mode), // see also: https://webpack.js.org/configuration/optimization/#optimizationnodeenv
          'process.env.NODE_DEBUG': 'undefined',
          'process.env.DEBUG': 'undefined',
          'process.env.BABEL_ENV': JSON.stringify(mode),
          'process.env.BABEL_TYPES_8_BREAKING': false,
          // further optimizations (ease dead code elimination)
          'process.stdin': 'null',
          'process.stdout': 'null',
          'process.stderr': 'null',
          'process.browser': 'true',
          'process.env.TERM': 'undefined',
          // config
          'process.env.GEN_SOURCEMAP': JSON.stringify(false),
          'process.env.VERSION': JSON.stringify(pkg.version),
    }),
    new webpack.ProvidePlugin({
      'Buffer': ['buffer', 'Buffer'],
      'process': 'process',
    }),
  ],
    devServer: {
      static: {
        directory: path.join(__dirname, '/'),
      },
      compress: true,
      port: 7777,
    }
  };
}