webpack.config.js

const webpack = require('webpack');

module.exports = {
  plugins: [
    new webpack.ProvidePlugin({
      process: 'process/browser',
      Buffer: ['buffer', 'Buffer']
    })
  ],
  resolve: {
    fallback: {
      fs: require.resolve('browserify-fs'),
      path: require.resolve('path-browserify'),
      crypto: require.resolve('crypto-browserify')
    }
  }
};