craco.config.js

const webpack = require('webpack');

module.exports = {
  webpack: {
    configure: (webpackConfig) => {
      webpackConfig.resolve.alias = {
        ...webpackConfig.resolve.alias,
        process: 'process/browser',
      };
      webpackConfig.resolve.fallback = {
        ...webpackConfig.resolve.fallback,
        crypto: require.resolve('crypto-browserify'),
        buffer: require.resolve('buffer/'),
        stream: require.resolve('stream-browserify'),
        vm: require.resolve('vm-browserify'),
        'process/browser': require.resolve('process/browser'),
      };
      webpackConfig.plugins = [
        ...webpackConfig.plugins,
        new webpack.ProvidePlugin({
          process: 'process/browser',
          Buffer: ['buffer', 'Buffer'],
        }),
      ];
      return webpackConfig;
    },
  },
};