const x = a.b ?? (
  (
    c = "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdef",
    d = "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdef"
  ) =>
  (e) =>
    0
);