// Helpers...
export function parseDouble(text: string): number | undefined {
  if (text === '') {
    return;
  }
  const num = Number(text);
  if (Number.isNaN(num)) {
    return;
  }
  return num;
}
export function parseInt(text: string): bigint | undefined {
  if (text === '') {
    return;
  }
  try {
    return BigInt(text);
  }
  catch (e) { };
}