minify.js

var args = arguments;

(function () {
    var code = readFile(args[0]);
    var ast = UglifyJS.parse(code);
    ast.figure_out_scope();

    var compressor = UglifyJS.Compressor({
    });

    ast = ast.transform(compressor);
    var result = ast.print_to_string();
    print(result);
}());