Basic xlx exporter lib.

 npm i sheet

 import Sheet from 'mapjc';

 const sheet = new Sheet();
 
 sheet.addColumn('Col 1').addColumn('Col 2');
 or
 sheet.addColumn('Col 1').addColumn('<div>Col 2</div>');

 for(let rowIndex=0; rowIndex<5; rowIndex++){
      const row = new SheetRow();
      row.addCell(`Cel ${rowIndex}-1`).addCell(`Cel ${rowIndex}-2`);
      sheet.addRow(row);
 }

 const downloader = sheet.compile()
 if(downloader.download){
      downloader.download();
 }

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