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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.// This module is browser compatible.
/** * Check whether byte slices are equal to each other using 8-bit comparisons. * * @param a First array to check equality * @param b Second array to check equality * @returns `true` if the arrays are equal, `false` otherwise * * @private */function equalsNaive(a: Uint8Array, b: Uint8Array): boolean {  for (let i = 0; i < b.length; i++) {    if (a[i] !== b[i]) return false;  }  return true;}
/** Check whether byte slices are equal to each other using 32-bit comparisons. * * @param a First array to check equality. * @param b Second array to check equality. * @returns `true` if the arrays are equal, `false` otherwise. * * @private */function equals32Bit(a: Uint8Array, b: Uint8Array): boolean {  const len = a.length;  const compactOffset = 3 - ((a.byteOffset + 3) % 4);  const compactLen = Math.floor((len - compactOffset) / 4);  const compactA = new Uint32Array(    a.buffer,    a.byteOffset + compactOffset,    compactLen,  );  const compactB = new Uint32Array(    b.buffer,    b.byteOffset + compactOffset,    compactLen,  );  for (let i = 0; i < compactOffset; i++) {    if (a[i] !== b[i]) return false;  }  for (let i = 0; i < compactA.length; i++) {    if (compactA[i] !== compactB[i]) return false;  }  for (let i = compactOffset + compactLen * 4; i < len; i++) {    if (a[i] !== b[i]) return false;  }  return true;}
/** * Byte length threshold for when to use 32-bit comparisons, based on * benchmarks. * * @see {@link https://github.com/denoland/deno_std/pull/4635} */const THRESHOLD_32_BIT = 160;
/** * Check whether byte slices are equal to each other. * * @param a First array to check equality. * @param b Second array to check equality. * @returns `true` if the arrays are equal, `false` otherwise. * * @example Basic usage * ```ts * import { equals } from "https://deno.land/std@$STD_VERSION/bytes/equals.ts"; * * const a = new Uint8Array([1, 2, 3]); * const b = new Uint8Array([1, 2, 3]); * const c = new Uint8Array([4, 5, 6]); * * equals(a, b); // true * equals(b, c); // false * ``` */export function equals(a: Uint8Array, b: Uint8Array): boolean {  if (a.length !== b.length) {    return false;  }  return a.length >= THRESHOLD_32_BIT &&      (a.byteOffset % 4) === (b.byteOffset % 4)    ? equals32Bit(a, b)    : equalsNaive(a, b);}