how compress .xlsx files to .zip using jszip??

[Somepalli]

Hi

 i am new to node i have a requirement where i have to compress a set of received .xlsx files into .zip. I have to again email this zip as an attachement. I could now attach a single xlsx file into the mail, but i am clueless how to compress this file into a zip.kindly help

Please look at below code snippet where .xlsx is generated.

  // XLSX file

        attachements.push(...[report.emailParts.XLSX].filter(a=>a).map((xlsx) => {

            let out_file_name = "";

          let a=[];

            try {

                 out_file_name = out_file_pattern_to_name(

                    report.parts[0].outfile_pattern || outfile_pattern,

                    {Name: report.parts[0].Name || name});

            } catch (e)  {

                console.dir(e);

                process.exit(1);

            }

      return {

             filename:out_file_name + '.xlsx' ,

              content: new Buffer(xlsx, 'base64') 

       }

        }));