This is perl 5, version 26, subversion 0 (v5.26.0) built for MSWin32-x64-multi-thread-ld

##</code><code>##

use strict;
use warnings;
use JSON::MaybeXS;

my        $json_codec = JSON::MaybeXS->new;
print ref $json_codec, "\n";
print     $json_codec->encode( { d => 1.0 } ), "\n";

##</code><code>##

16:27 >mversion -f JSON::MaybeXS Cpanel::JSON::XS JSON::XS JSON::PP
JSON::MaybeXS 1.003009
Cpanel::JSON::XS 3.0233
JSON::XS 3.04
JSON::PP 2.94

16:27 >

##</code><code>##

19:26 >perl 1800_SoPW.pl
Cpanel::JSON::XS

##</code><code>##

19:26 >perl -MJSON::XS 1800_SoPW.pl
JSON::XS
{"d":1}

19:27 >

##</code><code>##

16:37 >perl 1800_SoPW.pl
Cpanel::JSON::XS
{"d":1.0}

16:38 >