[ 原始碼： uglifyjs ]
套件：libjs-uglify（2.8.29-8）
UglifyJS in library form
UglifyJS is a JavaScript compressor/minifier written in JavaScript. It also contains tools that allow one to automate working with JavaScript code:
* A parser which produces an abstract syntax tree (AST) from JavaScript code. * A code generator which outputs JavaScript code from an AST, also providing the option to get a source map. * A compressor (optimizer) - it uses the transformer API to optimize an AST into a smaller one. * A mangler - reduce names of local variables to (usually) single-letters. * A scope analyzer, which is a tool that augments the AST with information about where variables are defined/referenced etc. * A tree walker - a simple API allowing you to do something on every node in the AST. * A tree transformer - another API intended to transform the tree.
All the above utilities and APIs are defined in ~6500 lines of code (except for the effective generation of the source-map, which is handled by the source-map module). Compared to alternatives, UglifyJS is pretty small.
This package provides UglifyJS in library form for use by other Javascript packages and web applications.
NB! This package is deprecated! Please consider using libjs-uglify-js instead.