% perl -MBench -MStorable=dclone -MData::Dump -MJSON -MData::Visitor::Callback -E'
$data=JSON->new->decode(q([null, true, false, 1, 2, 3, "a", "b", [], {}])); dd $data; 
$v=Data::Visitor::Callback->new("JSON::PP::Boolean"=>sub{$_=$_?1:0}, "JSON::XS::Boolean"=>sub{$_=$_?1:0}); 
bench sub { $data2=dclone($data); $v->visit($data2) }, -1; dd $data2'
[
  undef,
  bless(do{\(my $o = 1)}, "JSON::XS::Boolean"),
  bless(do{\(my $o = 0)}, "JSON::XS::Boolean"),
  1,
  2,
  3,
  "a",
  "b",
  [],
  {},
]
4846 calls (3328/s), 1.456s (0.301ms/call)
[undef, 1, 0 .. 3, "a", "b", [], {}]

% perl -MBench -MStorable=dclone -MData::Dump -MJSON -MData::Rmap=rmap_ref -E'
$data=JSON->new->decode(q([null, true, false, 1, 2, 3, "a", "b", [], {}])); 
dd $data; 
bench sub { $data2=clone($data); rmap_ref { $_ = ref($_) eq "JSON::PP::Boolean" || ref($_) eq "JSON::XS::Boolean" ? ($_?1:0) : $_ } $data }, -1; 
dd $data2'
[
  undef,
  bless(do{\(my $o = 1)}, "JSON::XS::Boolean"),
  bless(do{\(my $o = 0)}, "JSON::XS::Boolean"),
  1,
  2,
  3,
  "a",
  "b",
  [],
  {},
]
13573 calls (11735/s), 1.157s (0.0852ms/call)
[undef, 1, 0 .. 3, "a", "b", [], {}]

% perl -MBench -MStorable=dclone -MData::Dump -MJSON -MData::Clean::FromJSON -E'
$data=JSON->new->decode(q([null, true, false, 1, 2, 3, "a", "b", [], {}])); 
dd $data; 
$cleanser=Data::Clean::FromJSON->new; 
bench sub { $data2=dclone($data); $cleanser->clean_in_place($data2) }, -1; 
dd $data2'
[
  undef,
  bless(do{\(my $o = 1)}, "JSON::XS::Boolean"),
  bless(do{\(my $o = 0)}, "JSON::XS::Boolean"),
  1,
  2,
  3,
  "a",
  "b",
  [],
  {},
]
33781 calls (32790/s), 1.030s (0.0305ms/call)
[undef, 1, 0 .. 3, "a", "b", [], {}]