babel.config.js

module.exports = {
  presets: [
    [
      '@babel/preset-env',
      {
        targets: {
          browsers: [
            // Best practice: https://github.com/babel/babel/issues/7789
            '>=1%',
            'not ie 11',
            'not op_mini all'
          ]
        }
      }
    ]
  ]
};

module.exports = function (api) {
  api.cache(true);
  const presets = [
    ["@babel/preset-react"]
  ]
  const plugins = [];
  return {
    presets,
    plugins
  };
}