CODEWITHSUNDEEP
perl
user9057586
user9057586

Reputation: 133

What does this error mean: "import is not exported by the exporter module"?

As the title states, I get this error when trying to use my perl module, but I have no idea what it means and I can't seem to find any clear results on the internet. My code consists of 3 files: a script (myApp.pl) which uses a module (MyLib.pm) which in turn uses another module (Secret.pm). Here they are in their entirety:

myApp.pl

#!/path/to/perl

my $version = "1.0.0";

use warnings;
use strict;
use Testing::MyLib;

MyLib.pm

package Testing::MyLib;

use strict;
use warnings;

use Testing::Secret;

Secret.pm

package Testing::Secret;

use strict;
use warnings;

use Exporter qw( import );
our @EXPORT = ();
our %EXPORT_TAGS = (
  'all' => [ qw( MY_CONSTANT )]
);
our @EXPORT_OK = (
  @{ $EXPORT_TAGS{all}}
);

use constant MY_CONSTANT => 'bla bla bla';

They exit in this file structure:

/bin/myApp.pl
/lib/perl/Testing/MyLib.pm
/lib/perl/Testing/Secret.pm

And the detail of the error message is:

[user@pc ~]$ myApp.pl
"import" is not exported by the Exporter module at /###/lib/perl/Testing/Secret.pm line 6
Can't continue after import errors at /###/lib/perl/Testing/Secret.pm line 6
BEGIN failed--compilation aborted at /###/lib/perl/Testing/Secret.pm line 6.
Compilation failed in require at /###/lib/perl/Testing/MyLib.pm line 6.
BEGIN failed--compilation aborted at /###/lib/perl/Testing/MyLib.pm line 6.
Compilation failed in require at /###/bin/myApp.pl line 7.
BEGIN failed--compilation aborted at /###/bin/myApp.pl line 7.

Upvotes: 3

Views: 1127

Answers (1)

Grinnz
Grinnz

Reputation: 9231

use Exporter qw( import ); requests that Exporter exports (creates) import in your module's namespace. This is the method that handles requests to export from your module. Versions of Exporter older than 5.57 don't recognize this request, leading to the error message you obtained.

Since Exporter 5.57 or newer has been bundled with Perl since Perl 5.8.3, you must have a pretty ancient version of Perl and the module!

You could upgrade Exporter, or you could inherit import from Exporter, which is a little messier but works with any version of Exporter.

package MyPackage;
use strict;
use warnings;
use Exporter;
our @ISA = 'Exporter';
our @EXPORT_OK = ...;

Upvotes: 6

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