babel/packages/babel-plugin-proposal-object-rest-spread/test/fixtures/object-rest/nested-default-value/output.js

var _ref2;

const {
  a = (_ref) => {
    let rest = babelHelpers.extends({}, _ref);
    let b = babelHelpers.extends({}, {});
  },
  c = (_ref2 = {}, ({} = _ref2), d = babelHelpers.extends({}, _ref2), _ref2)
} = {};