how to get zipped file name using easyzip

[Somepalli]

var EasyZip = require('easy-zip').EasyZip;

 

var zip = new EasyZip();

//add text  

zip.file('hello.txt','Hello World！');

 zip.writeToFile('text.zip');//write zip data to disk 

 console.log(zip.writeToFile('text.zip'));

output :undefined