NAME Plack::Middleware::REPL - REPL when your application throws errors or warnings SYNOPSIS enable "REPL"; DESCRIPTION Plack::Middleware::REPL is a PSGI middleware component that enables REPL (read-eval-print-loop) when your application raises errors. # your Dancer app use Dancer; get '/' => sub { my $self = shift; my $n = parms()->{name}; # typo return "Hi there $n"; }; dance; Run it with the REPL middleware: plackup -e 'enable "REPL"' app.pl Hit your application, and you'll get a REPL shell on the console: Trace begun at ... ... $ :l File /Users/miyagawa/development/dancer/app.pl 5: use Dancer; 6: 7: get '/' => sub { 8: my $self = shift; * 9: my $n = parms()->{name}; 10: return "Hi there $n"; 11: }; 12: dance; $ request->path / $ :u Now at /Users/miyagawa/perl5/perlbrew/perls/perl-5.12.3/lib/site_perl/5.12.3/Dancer/Route.pm:246 (frame 1). $ $self $Dancer_Route1 = Dancer::Route=HASH(0x10089d278); See Carp::REPL for more commands in the REPL shell. OPTIONS warn enable "REPL", warn => 1; Also enables REPL when your app throws warnings. LIMITATIONS Because of the way $SIG{__DIE__} works in Perl, this middleware doesn't work well with web application frameworks that sets its own exception handler, such as Mojolicious. AUTHOR Tatsuhiko Miyagawa COPYRIGHT Copyright 2011- Tatsuhiko Miyagawa LICENSE This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself. SEE ALSO Carp::REPL Devel::REPL CatalystX::REPL