export function nToU8a <ExtToBn extends ToBn | ToBigInt> (value?: ExtToBn | BN | bigint | number | null, { bitLength = -1, isLe = true, isNegative = false }: NumberOptions = {}): Uint8Array {
  const valueBi = nToBigInt(value);

  if (valueBi === _0n) {
    return bitLength === -1