code: function uglify(src, dest) {
          var licence = getLicence(src);
  
          try {
              var final_code = uglifyJs.minify(src, {
                  ascii_only: true
              });
  
              fs.writeFileSync(dest, licence + "\r\n" + final_code.code, FILE_ENCODING);
          } catch (ex) {
              console.log(ex, ex.stack);
              error = true;
          }
      }
docs: Uglify