authelia/docs/config/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',
          ],
        },
      },
    ],
  ],
};