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const NUMBER_REGEX = new RegExp('(\\d+?)(?=(\\d{3})+(?!\\d)|$)', 'g');
/** * @name formatDecimal * @description Formats a number into string format with thousand separators */export function formatDecimal (value: string, separator = ','): string {  // We can do this by adjusting the regx, however for the sake of clarity  // we rather strip and re-add the negative sign in the output  const isNegative = value[0].startsWith('-');  const matched = isNegative    ? value.substring(1).match(NUMBER_REGEX)    : value.match(NUMBER_REGEX);
  return matched    ? `${isNegative ? '-' : ''}${matched.join(separator)}`    : value;}