text: onError= (e) => { console.log("ERROR", e); }
  
  window.requestFileSystem(PERSISTENT, 1024 * 1024, function(fs) {
  		 fs.root.getFile('hexadecimal.zip', {create: false}, function(fileEntry) {
  				 fileUrl = fileEntry.toURL();
  			 }, onError);
  
  		 fs.root.getDirectory('tmp', {create: true}, function(fileEntry) {
  			 dirUrl = fileEntry.toURL();
  			 }, onError);
  		 }, onError);
  
  zip.unzip_str(fileUrl, "hexadecimal.js", (d, e) => console.log("DATO", d, "e", e), (d) => console.log("P", d));
  