code: function (compiled) {
          // 01. Embed version
          var version = grunt.config('pkg.version');
          compiled = compiled.replace(/@VERSION/g, version);
  
          // 02.  Embed Date
          var date = (new Date()).toISOString().replace(/:\d+\.\d+Z$/, 'Z');
          compiled = compiled.replace(/@DATE/g, date);
  
          grunt.file.write(self.data.outFile, compiled);
        }
docs: Handle final output from the optimizer