Utility functions to convert to CSV (using json2csv) and download the csv as a file

convert-to-csv-and-download.js

import JSON2CSV from 'json2csv';

export const convertToCSV = (arr: Array<any>) => {
  const json2csvParser = new JSON2CSV.Parser();
  const csv = json2csvParser.parse(arr);
  return csv;
};

export const downloadCSV = (csv: string, fileName = 'download.csv') => {
  var blob = new Blob([csv], { type: 'text/csv;charset=utf-8;' });
  if (navigator.msSaveBlob) { // IE 10+
      navigator.msSaveBlob(blob, fileName);
  } else {
      var link = document.createElement('a');
      if (link.download !== undefined) { // feature detection
          // Browsers that support HTML5 download attribute
          var url = URL.createObjectURL(blob);
          link.setAttribute('href', url);
          link.setAttribute('download', fileName);
          link.style.visibility = 'hidden';
          document.body.appendChild(link);
          link.click();
          document.body.removeChild(link);
      }
  }
};