fbredius/storybook

import { addPreset } from '../presets';

export default function transformer(file, api) {
  const j = api.jscodeshift;
  const root = j(file.source);

  const options = {
    a: [1, 2, 3],
    b: { foo: 'bar' },
    c: 'baz',
  };

  addPreset('test', options, { root, api });

  return root.toSource({ quote: 'single' });
}