module.exports = function()

in utils/babel-preset.js [17:36]


module.exports = function(api) {
  return {
    presets: [[require('@babel/preset-env'), defaultOptions.envPresetOptions]],

    plugins: [
      require('@babel/plugin-proposal-class-properties'),

      require('@babel/plugin-proposal-object-rest-spread'),

      require('@babel/plugin-transform-async-to-generator'),

      require('@babel/plugin-transform-react-jsx'),

      [
        require('@babel/plugin-transform-runtime'),
        defaultOptions.transformRuntimeOptions
      ]
    ].filter(Boolean)
  };
};