/usr/share/perl5/JE/Null.pm is in libje-perl 0.056-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 | package JE::Null;
our $VERSION = '0.056';
use strict;
use warnings;
use overload fallback => 1,
'0+' => sub { 0 },
'""' => 'id',
# cmp => sub { "$_[0]" cmp $_[1] },
bool => sub { undef };
require JE::String;
require JE::Boolean;
# A JE::Null object is just a reference to a global object, which itself
# is a reference to a reference to a hash, i.e.:
# bless \(bless \\%thing, JE), JE::Null
#
# so $$$$self{keys} is a list of enumerable global property names.
# Hmm... What does ££££self{keys} mean?
=head1 NAME
JE::Null - JavaScript null value
=head1 SYNOPSIS
use JE;
$j = new JE;
$js_null = $j->null;
$js_null->value; # undef
=head1 DESCRIPTION
This class implements the JavaScript "null" type. There really
isn't much to it.
Null stringifies to 'null', numifies to 0, and is false as a boolean.
=cut
#use Carp;
sub new { bless \do{my $thing = $_[1]}, $_[0] }
sub value { undef }
sub typeof { 'object' }
sub id { 'null' }
sub primitive { 1 }
sub to_primitive { $_[0] }
sub to_boolean { JE::Boolean->new(${+shift}, '') };
sub to_string { JE::String->_new(${+shift}, 'null') };
sub to_number { JE::Number->new(${+shift}, 0) }
sub global { ${$_[0]} }
"Do you really expect a module called 'null' to return a true value?!";
=head1 SEE ALSO
=over 4
=item JE
=item JE::Types
=item JE::Undefined
=cut
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