Provided by: libjavascript-minifier-xs-perl_0.11-1build4_amd64 bug


       JavaScript::Minifier::XS - XS based JavaScript minifier


         use JavaScript::Minifier::XS qw(minify);
         $minified = minify($js);


       "JavaScript::Minifier::XS" is a JavaScript "minifier"; its designed to remove un-necessary
       whitespace and comments from JavaScript files, which also not breaking the JavaScript.

       "JavaScript::Minifier::XS" is similar in function to "JavaScript::Minifier", but is
       substantially faster as its written in XS and not just pure Perl.


           Minifies the given $js, returning the minified JavaScript back to the caller.


       "JavaScript::Minifier::XS" minifies the JavaScript by removing un-necessary whitespace
       from JavaScript documents.  Comments (both block and line) are also removed, except when
       (a) they contain the word "copyright" in them, or (b) they're needed to implement "IE
       Conditional Compilation".

       Internally, the minification process is done by taking multiple passes through the
       JavaScript document:

   Pass 1: Tokenize
       First, we go through and parse the JavaScript document into a series of tokens internally.
       The tokenizing process does not check to make sure you've got syntactically valid
       JavaScript, it just breaks up the text into a stream of tokens suitable for processing by
       the subsequent stages.

   Pass 2: Collapse
       We then march through the token list and collapse certain tokens down to their smallest
       possible representation.  If they're still included in the final results we only want to
       include them at their shortest.

           Runs of multiple whitespace characters are reduced down to a single whitespace
           character.  If the whitespace contains any "end of line" (EOL) characters, then the
           end result is the first EOL character encountered.  Otherwise, the result is the first
           whitespace character in the run.

   Pass 3: Pruning
       We then go back through the token list and prune and remove un-necessary tokens.

           Wherever possible, whitespace is removed; before+after comment blocks, and
           before+after various symbols/sigils.

           Comments that are either (a) IE conditional compilation comments, or that (b) contain
           the word "copyright" in them are preserved.  All other comments (line and block) are

       Everything else
           We keep everything else; identifiers, quoted literal strings, symbols/sigils, etc.

   Pass 4: Re-assembly
       Lastly, we go back through the token list and re-assemble it all back into a single
       JavaScript string, which is then returned back to the caller.


       Graham TerMarsch (


       Please report bugs via RT
       (<>), and be sure to
       include the JavaScript that you're having troubles minifying.


       Copyright (C) 2007-2008, Graham TerMarsch.  All Rights Reserved.

       This is free software; you can redistribute it and/or modify it under the same license as
       Perl itself.