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Simple port of /packer/ by Dean Edwards to node.js
JavaScript
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README.md

packer.js

This is a simple port of /packer/ by Dean Edwards to node.js.

Installation

If you use npm:

npm install packer

If you don't use npm, clone this repository or download the latest version using the GitHub repository Downloads link.

Usage

This module contains one function called pack(script, base62, shrink):

> var packer = require('packer');
> packer.pack('1 + 2');
'1+2'
> packer.pack('', true);
'eval(function(p,a,c,k,e,r){e=String;if(!\'\'.replace(/^/,String)){while(c--)r[c]=k[c]||c;k=[function(e){return r[e]}];e=function(){return\'\\\\w+\'};c=1};while(c--)if(k[c])p=p.replace(new RegExp(\'\\\\b\'+e(c)+\'\\\\b\',\'g\'),k[c]);return p}(\'\',2,0,\'\'.split(\'|\'),0,{}))'

It also adds the packer command:

$ packer -h
usage: <script> [options]

options:
-i FILE Input file (default stdin)
-o FILE Output file (default stdout)
-b  Base62 encode
-s  Shrink variables

$ echo 1 + a | packer -b
eval(function(p,a,c,k,e,r){e=String;if(!''.replace(/^/,String)){while(c--)r[c]=k[c]||c;k=[function(e){return r[e]}];e=function(){return'\\w+'};c=1};while(c--)if(k[c])p=p.replace(new RegExp('\\b'+e(c)+'\\b','g'),k[c]);return p}('1+0',2,2,'a|'.split('|'),0,{}))
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