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import type { HexString } from '../types.ts';
const U8 = new Array<string>(256);const U16 = new Array<string>(256 * 256);
for (let n = 0; n < 256; n++) {  U8[n] = n.toString(16).padStart(2, '0');}
for (let i = 0; i < 256; i++) {  const s = i << 8;
  for (let j = 0; j < 256; j++) {    U16[s | j] = U8[i] + U8[j];  }}
/** @internal */function hex (value: Uint8Array, result: HexString): HexString {  const mod = (value.length % 2) | 0;  const length = (value.length - mod) | 0;
  for (let i = 0; i < length; i += 2) {    result += U16[(value[i] << 8) | value[i + 1]];  }
  if (mod) {    result += U8[value[length] | 0];  }
  return result;}
/** * @name u8aToHex * @summary Creates a hex string from a Uint8Array object. * @description * `UInt8Array` input values return the actual hex string. `null` or `undefined` values returns an `0x` string. * @example * <BR> * * ```javascript * import { u8aToHex } from 'https://deno.land/x/polkadot@0.2.40/util/mod.ts'; * * u8aToHex(new Uint8Array([0x68, 0x65, 0x6c, 0x6c, 0xf])); // 0x68656c0f * ``` */export function u8aToHex (value?: Uint8Array | null, bitLength = -1, isPrefixed = true): HexString {  // this is not 100% correct sinmce we support isPrefixed = false....  const empty = isPrefixed    ? '0x'    : '' as HexString;
  if (!value || !value.length) {    return empty;  } else if (bitLength > 0) {    const length = Math.ceil(bitLength / 8);
    if (value.length > length) {      return `${hex(value.subarray(0, length / 2), empty)}…${hex(value.subarray(value.length - length / 2), '' as HexString)}`;    }  }
  return hex(value, empty);}