@hiero-ledger/sdk/lib/array.cjs

Hiero SDK

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.arrayEqual = arrayEqual;
exports.arrayStartsWith = arrayStartsWith;
// SPDX-License-Identifier: Apache-2.0

/**
 * A simple efficient function for comparing byte arrays
 *
 * @param {Uint8Array} array1
 * @param {Uint8Array} array2
 * @returns {boolean}
 */
function arrayEqual(array1, array2) {
  if (array1 === array2) {
    return true;
  }
  if (array1.byteLength !== array2.byteLength) {
    return false;
  }
  const view1 = new DataView(array1.buffer, array1.byteOffset, array1.byteLength);
  const view2 = new DataView(array2.buffer, array2.byteOffset, array2.byteLength);
  let i = array1.byteLength;
  while (i--) {
    if (view1.getUint8(i) !== view2.getUint8(i)) {
      return false;
    }
  }
  return true;
}

/**
 * @param {Uint8Array} array
 * @param {Uint8Array} arrayPrefix
 * @returns {boolean}
 */
function arrayStartsWith(array, arrayPrefix) {
  if (array.byteLength < arrayPrefix.byteLength) {
    return false;
  }
  let i = arrayPrefix.byteLength;
  while (i--) {
    if (array[i] !== arrayPrefix[i]) {
      return false;
    }
  }
  return true;
}