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POUglify-js doesn't mangle variable names
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copied!<p>Trying to prepare good build environment for my js library. According to reviews on the web <a href="https://github.com/mishoo/UglifyJS" rel="noreferrer">UglifyJS</a> seems to be one of the best compressing modules out there, working under NodeJS. So here is best recommended way of minifying the code:</p> <pre><code>var jsp = require("uglify-js").parser; var pro = require("uglify-js").uglify; var orig_code = "... JS code here"; var ast = jsp.parse(orig_code); // parse code and get the initial AST ast = pro.ast_mangle(ast); // get a new AST with mangled names ast = pro.ast_squeeze(ast); // get an AST with compression optimizations var final_code = pro.gen_code(ast); // compressed code here </code></pre> <p>As seen here, <code>pro.ast_mangle(ast)</code> should mangle variable names, but it doesn't. All I get out of this pipe is javascript code, with no spaces. At first I thought that my code was not optimized for compression, but then I tried it with <a href="http://closure-compiler.appspot.com/home" rel="noreferrer">Google Closure</a> and got quite a compression (with mangled variable names and everything). </p> <p>UglifyJS experts, any hint to what I'm doing wrong?</p> <p><strong>UPDATE</strong>:</p> <p>Actual code is too large to reference here, but even a snippet like this doesn't get mangled:</p> <pre><code>;(function(window, document, undefined) { function o(id) { if (typeof id !== 'string') { return id; } return document.getElementById(id); } // ... /** @namespace */ window.mOxie = o; }(window, document)); </code></pre> <p>This is what I get (only spaces get stripped I guess):</p> <pre><code>(function(window,document,undefined){function o(id){return typeof id!="string"?id:document.getElementById(id)}window.mOxie=window.o=o})(window,document) </code></pre>

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