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import type { ToBnOptions } from '../types.ts';
import { BigInt } from 'https://deno.land/x/polkadot@0.2.33/x-bigint/mod.ts';
import { _1n } from '../bi/consts.ts';
const U8_MAX = BigInt(256);const U16_MAX = BigInt(256 * 256);
/** * @name u8aToBigInt * @summary Creates a BigInt from a Uint8Array object. */export function u8aToBigInt (value: Uint8Array, { isLe = true, isNegative = false }: ToBnOptions = {}): bigint {  if (!value || !value.length) {    return BigInt(0);  }
  const u8a = isLe    ? value    : value.reverse();
  const dvI = new DataView(u8a.buffer, u8a.byteOffset);  const mod = u8a.length % 2;  let result = BigInt(0);
  // This is mostly written for readability (with the single isNegative shortcut),  // as opposed to performance, e.g. `u8aToBn` does loop unrolling, etc.  if (isNegative) {    for (let i = u8a.length - 2; i >= mod; i -= 2) {      result = (result * U16_MAX) + BigInt(dvI.getUint16(i, true) ^ 0xffff);    }
    if (mod) {      result = (result * U8_MAX) + BigInt(dvI.getUint8(0) ^ 0xff);    }  } else {    for (let i = u8a.length - 2; i >= mod; i -= 2) {      result = (result * U16_MAX) + BigInt(dvI.getUint16(i, true));    }
    if (mod) {      result = (result * U8_MAX) + BigInt(dvI.getUint8(0));    }  }
  return isNegative    ? ((result * -_1n) - _1n)    : result;}