babel.config.js

module.exports = api => {
  api.cache(true);

  return {
    env: {
      test: {
        presets: [
          [
            '@babel/preset-env',
            {
              targets: {
                node: 'current',
              },
            },
          ],
          ['@babel/preset-react'],
        ],
      },
    },
  };
};