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- 'use strict';
- var GetIntrinsic = require('get-intrinsic');
- var $Number = GetIntrinsic('%Number%');
- var $BigInt = GetIntrinsic('%BigInt%', true);
- module.exports = function integerToNBytes(intValue, n, isLittleEndian) {
- var Z = typeof intValue === 'bigint' ? $BigInt : $Number;
- /*
- if (intValue >= 0) { // step 3.d
- // Let rawBytes be a List containing the n-byte binary encoding of intValue. If isLittleEndian is false, the bytes are ordered in big endian order. Otherwise, the bytes are ordered in little endian order.
- } else { // step 3.e
- // Let rawBytes be a List containing the n-byte binary 2's complement encoding of intValue. If isLittleEndian is false, the bytes are ordered in big endian order. Otherwise, the bytes are ordered in little endian order.
- }
- */
- if (intValue < 0) {
- intValue >>>= 0; // eslint-disable-line no-param-reassign
- }
- var rawBytes = [];
- for (var i = 0; i < n; i++) {
- rawBytes[isLittleEndian ? i : n - 1 - i] = $Number(intValue & Z(0xFF));
- intValue >>= Z(8); // eslint-disable-line no-param-reassign
- }
- return rawBytes; // step 4
- };
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