# Pastebin TJJDOy0Q
sub panexec(Str() :$content, :$defaults, :@filters) is export {
    my @cmd = </usr/bin/pandoc -t pdf>;
    @cmd.append: ['--defaults', $defaults] if $defaults;
    if @filters { for @filters { @cmd.append: ['--filter', $_]; } }
    my $cmd = Proc::Async.new(:w, |@cmd);
    my $document = buf8.new();
    react {
        whenever $cmd.stdout(:bin) {
            say 'awoo';
            $document ~= $_;
        }
        whenever $cmd.stderr {
            say $_;
        }
        whenever $cmd.ready {
            say 'Document conversion started; PID: ', $_;
            $cmd.print: $content;
            $cmd.close-stdin;
        }
        whenever $cmd.start {
            say ‘Finished: exitcode=’, .exitcode, ‘ signal=’, .signal;
            done;
        }
    }
    return $document;
}