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// 5. Create a Blob and trigger the download const blob = new Blob([excelBuffer], type: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet' );

Once your content is ready, you can save a copy to your computer: Open your file in Excel Online . Go to the tab and select Save As . excel online download

To create a complex Excel file with multiple tabs: Once your content is ready

// 2. Convert JSON to Worksheet // The 'header' option is optional; without it, keys become headers. // You can customize headers like so: header: ["ID", "Name", "Email"] const worksheet = XLSX.utils.json_to_sheet(data); "Email"] const worksheet = XLSX.utils.json_to_sheet(data)

const worksheet = XLSX.utils.json_to_sheet(formattedData);