Name Mangler License Code

UglifyJS — the name mangler UglifyJS can reduce names of local variables and functions usually to single-letters. That's a safe optimization provided the following stand: • You don't directly call the global eval function.

Dec 15, 2014 - No coupon code, no secret handshake, no treasure hunt everything's. The email will read “Hello [your name]: Here is your license file for. Name Mangler (was File List) is an Easy-to-use batch file re-namer. If you need to rename several files at once, this is the application you have always been.

• You don't use the with statement. • You don't access the Function.name property.

UglifyJS can detect the first two cases and it will disable the mangler automatically in code areas that are poisoned by usage of eval or with. UglifyJS cannot detect if you're using the function's name property, however; in such code the mangler can potentially break your code. For example the template engine is affected by this issue (coupled with its author ). SYNOPSIS ast = UglifyJS.parse(code); ast.figure_out_scope(); ast.compute_char_frequency(); ast.mangle_names(); code = ast.print_to_string(); That's all there is to it. Make sure to call figure_out_scope() first, then call mangle_names() on the toplevel node.

Optionally insert the compute_char_frequency() there to get names that are optimized for GZip compression (names will be generated using the most frequent characters first). If you also your code, then you want to mangle names after compression, since the compressor might drop unused identifiers, unreachable code etc. The full sequence would be this: ast = UglifyJS.parse(code); // compressor needs figure_out_scope too ast.figure_out_scope(); compressor = UglifyJS.Compressor() ast = ast.transform(compressor); // need to figure out scope again so mangler works optimally ast.figure_out_scope(); ast.compute_char_frequency(); ast.mangle_names(); // get Ugly code back:) code = ast.print_to_string().

UglifyJS 2 — online demo Note that this is only tested with Chrome and Firefox. Should work with Safari as well, but most probably not with Opera or IE.

Paste your code in the left box. Click “Uglify!” to get compressed output on the right. The left-side will turn into the editor. At this point if you click any token in the minified area, the editor on the left will move to the original location of that minified token.

Tick the “As I type” checkbox to turn on minification on-the-fly. When the compressor warns, you'll get a flashing button in the toolbar. Click on it to display the warnings (temporarily covers the minified area). Click a warning in the list to go to that position in the source. If you have 'on-the-fly' and fix warnings, the list will update automatically. You can enable/disable the compressor, mangler and beautifier.

For additional control check the buttons on the right ( “Compressor.” and “Codegen.”). Those options are saved in localStorage, they will be remembered the next time you visit this page. /** May the source-map be with you!

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