babel/packages/babel-plugin-transform-parameters/test/fixtures/parameters/regression-4634/output.js

let oneOf = function () {
  for (var _len = arguments.length, nodes = new Array(_len), _key = 0; _key < _len; _key++) {
    nodes[_key] = arguments[_key];
  }
  if (nodes.length === 1) {
    return nodes[0];
  }
  return new OneOfNode(nodes);
};