Do not inherit from Exporter

requires Exporter 5.57
use Exporter qw(import) rather than
use Exporter; our @isa=('Exporter');

Changes

@@ -8,6 +8,7 @@ Revision history File::Slurp
 	- Dump the POD to GH markdown for a README.md
 	- Remove the README file
 	- Remove some work-arounds for older Perls < 5.6
+	- Do not inherit from Exporter (requires Exporter 5.57)
 
 9999.21    2018-10-08
 	- Unset $^W in a few strategic places to silence warnings when Test::Harness

META.yml

@@ -36,7 +36,7 @@ requires:
   B: '0'
   Carp: '0'
   Errno: '0'
-  Exporter: '0'
+  Exporter: '5.57'
   Fcntl: '0'
   POSIX: '0'
   strict: '0'

Makefile.PL

@@ -37,7 +37,7 @@ my %TestReqs = (
 my %prereqs = (
     'B' => 0,
     'Carp' => 0,
-    'Exporter' => 0,
+    'Exporter' => '5.57',
     'Errno' => 0,
     'Fcntl' => 0,
     'POSIX' => 0,

lib/File/Slurp.pm

@@ -7,15 +7,11 @@ our $VERSION = '9999.22_01';
 $VERSION = eval $VERSION;
 
 use Carp ;
-use Exporter ;
+use Exporter qw(import);
 use Fcntl qw( :DEFAULT ) ;
 use File::Spec;
 use POSIX qw( :fcntl_h ) ;
 use Errno ;
-#use Symbol ;
-
-use vars qw( @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS  ) ;
-@ISA = qw( Exporter ) ;
 
 my @std_export = qw(
 	read_file
@@ -30,17 +26,14 @@ my @edit_export = qw(
 	edit_file_lines
 ) ;
 
-my @ok_export = qw(
-) ;
-
 my @abbrev_export = qw(
 	rf
 	wf
 	ef
 	efl
 ) ;
 
-@EXPORT_OK = (
+our @EXPORT_OK = (
 	@edit_export,
 	@abbrev_export,
 	qw(
@@ -49,14 +42,14 @@ my @abbrev_export = qw(
 	),
 ) ;
 
-%EXPORT_TAGS = (
+our %EXPORT_TAGS = (
 	'all'	=> [ @std_export, @edit_export, @abbrev_export, @EXPORT_OK ],
 	'edit'	=> [ @edit_export ],
 	'std'	=> [ @std_export ],
 	'abr'	=> [ @abbrev_export ],
 ) ;
 
-@EXPORT = @std_export ;
+our @EXPORT = @std_export ;
 
 my $max_fast_slurp_size = 1024 * 100 ;