Function hexStringToBigInt

packages/hardhat-utils/src/hex.ts:37–53

(hexString: string)

 * @throws InvalidParameterError If the input is not a hexadecimal string.
 */
export function hexStringToBigInt(hexString: string): bigint {
  if (!isHexString(hexString)) {
    throw new InvalidParameterError(
      `Expected a valid hexadecimal string. Received: ${hexString}`,
    );
  }
  // Prefix the string as it is required to make BigInt interpret it as a
  // hexadecimal number.
  let prefixedHexString = getPrefixedHexString(hexString);
  // BigInt does not support "0x" as a valid hexadecimal number, so we need to
  // add a zero after the prefix if the string is "0x".
  prefixedHexString = prefixedHexString === "0x" ? "0x0" : prefixedHexString;

  const bigInt = BigInt(prefixedHexString);

  return bigInt;
}

/**
 * Converts a hexadecimal string to a number. The string must be a valid