._WINDOWS: Bool

.copyfile!: (src: PathLike, dst: PathLike,) => NoneType
.copy!: (src: PathLike, dst: PathLike,) => NoneType
.copytree!: (src: PathLike, dst: PathLike,) => NoneType
.disk_usage!: (path: PathLike,) => NamedTuple {
    .total = Nat
    .used = Nat
    .free = Nat
}
.rmtree!: (path: PathLike,) => NoneType
.move!: (src: PathLike, dst: PathLike) => Str
.which!: (cmd: Str,) => Str or NoneType