@dotconnor/grommet/tools/grommet-babel-preset-es2015.js

focus on the essential experience

const ENV = process.env.BABEL_ENV;

module.exports = function () {
  return {
    presets: [
      ['@babel/preset-env', {
        loose: true,
        modules: ENV === 'es6' ? false : 'commonjs',
      }],
    ],
  };
};