src/components/widgets/Form/fieldsets/index.js

import BlankFieldset from './BlankFieldset';
import TitleFieldset from './TitleFieldset/TitleFieldset';
import CollapseFieldSet from './CollapseFieldset/CollapseFieldSet';
import LineFieldset from './LineFieldset/LineFieldset';

export default {
  StandardFieldset: BlankFieldset,
  TitleFieldset: TitleFieldset,
  CollapseFieldset: CollapseFieldSet,
  LineFieldset: LineFieldset,
};