Node deprecation Warning

[danverde]

When using :

zip.zipFolder('fileToZip', function () {
  zip.writeToFile('newPath.zip');
  console.log('done?');
});

Node gives the following warning:

[DEP0013] DeprecationWarning: Calling an asynchronous function without callback is deprecated.

[prust]

In Node 10.x, it is no longer deprecated, it now throws an error when you call zip.writeTofile() without passing a callback (as the examples do):

Callback must be a function: TypeError [ERR_INVALID_CALLBACK]: Callback must be a function
at maybeCallback (fs.js:157:9)
at Object.fs.writeFile (fs.js:1276:14)
at EasyZip.writeToFile (C:\Users\peter.rust\repos\qpm\node_modules\easy-zip\easyzip.js:120:6)