gruntjs - grunt uglify not distorting variable names -

I am using strict adversity and do not seem to confuse these variable names. My "God" object is called "Porsche" and it maintains that all its functions are readable as you can see here:

And this is my grinfile configuration:

  useless: {option: {banner} : '/ *! & Lt;% = pkg.name% & gt; & Lt;% = grunt.template.today ("yyyy-mm-dd")%> * / \ N ', mangle: {excluding: [' jquery ',' jquery ']}}, create: {src: [' property / js / ** / *. JS '], Destination:' Property / JS / Prod / all.min.js'}}  

I want to confuse it completely, save the bytes in the name of the function. Is there anything I am doing wrong?

you mangal: incorrect prevent changes in the names of your variables and functions To:

  useless: {option: {banner: '/ *! & Lt;% = pkg.name% & gt; & Lt;% = grunt.template.today ("yyyy-mm-dd")%> * / \ N ', mangle: false}, create: {src: [assets / js / ** / *. Js'], dest: 'assets / js / prod / all.min.js'}}  

Check to see another example.