format large number 9.939515029213079e+40

formatLargeNumber.js

import numeral from 'numeral';

export const formatCurrency = (number, symbol = '$') => {
  const formatScientificNotationNumber = Number(number).toFixed(8); // format for case number = 9.322320693172514e-12

  if (formatScientificNotationNumber.includes('e+')) {
    var formatter = new Intl.NumberFormat('en-AU', {
      style: 'currency',
      currency: 'AUD',
      minimumFractionDigits: 0,
      maximumFractionDigits: 0,
    });
    return formatter.format(number);
  }

  const currencyPattern =
    symbol +
    (numeral(formatScientificNotationNumber)._value > 1000000 ||
    numeral(formatScientificNotationNumber)._value < -1000000
      ? '0,0'
      : '0,0[.]00');
  return numeral(formatScientificNotationNumber).format(currencyPattern);
};