var _ref = {},
    a = _ref.a,
    b = _ref.b,
    _ref$c = _ref.c,
    d = _ref$c.d,
    _ref$c$e$f = _ref$c.e.f,
    f = _ref$c$e$f === void 0 ? 4 : _ref$c$e$f;
export { a, b, d, f };