message: Fix babel configuration
diff: @@ -8,12 +8,11 @@ module.exports = function(storybookBaseConfig, configType) {
  const babelOptions = {
  plugins: [
  - ['emotion', { autoLabel: true, hoist: true, sourceMap: true }],
  - 'transform-class-properties',
  + ['emotion', { autoLabel: true, sourceMap: true }],
  + '@babel/plugin-proposal-class-properties',
  'lodash',
  - 'transform-object-rest-spread',
  ],
  - presets: [['env', { loose: true, modules: false }], 'react', 'stage-3'],
  + presets: [['@babel/preset-env', { loose: true, modules: false }], '@babel/preset-react'],
  babelrc: false
  };
  