This is a library for zipping a folder using Google Apps Scripts.
When users manually download a folder on Google Drive, users can download all files in the folder as a zip file using the web interface. There are zip tools in Class Utilities of Google Apps Script. However, the zip tools cannot create a zip file from a folder. And it cannot retrieve all files included any folders in a folder. So I created this. This library works like almost the same to the web interface using GAS.
You can see the detail information here https://github.com/tanaikech/ZipFolder