Function recurse

packages/dev/parcel-packager-docs/DocsPackager.js:280–291

(obj, fn)

}

function recurse(obj, fn) {
  if (obj[circularSymbol]) {
    return {
      type: 'link',
      id: obj.id
    };
  }
  obj[circularSymbol] = true;
  let res = visitChildren(obj, fn);
  obj[circularSymbol] = false;
  return res;
}

function visitChildren(obj, fn) {
  let properties = null;