GASでzipをつくるやつ

MakeZipForGAS

//フォルダの中身をzipにする関数
function makeZip(fileName, folderId){
  var folder = DriveApp.getFolderById(folderId);
  var fileList = folder.getFiles();
  var archive = "";
  var blobs = new Array();
  
  while(fileList.hasNext()){
    var file = fileList.next();
    if(file.getName() == fileName + ".zip"){
     folder.removeFile(file);
      continue;
    }
    blobs.push(file.getBlob());
  }

  var zip = Utilities.zip(blobs, fileName + ".zip");
  var id = folder.createFile(zip).getId();
  Logger.log("zipurl: " + "https://drive.google.com/uc?id=" + id); 
}