vruffer

// From the polyfill of UInt8Array().toHex(), for some reason, you cannot .map a Uint8Array with the same result
// https://github.com/tc39/proposal-arraybuffer-base64/blob/main/playground/polyfill-core.mjs
function uint8ArrayToHex(arr: Uint8Array) {
  let out = '';
  for (let i = 0; i < arr.length; i += 1) {
    out += arr[i]!.toString(16).padStart(2, '0');
  }
  return out;
}

vruffer

import { DecryptCommand, EncryptCommand, KMSClient } from '@aws-sdk/client-kms';

const client = new KMSClient({});

const keyId = 'alias/some-kms-key-id';

const encoder = new TextEncoder();
const decoder = new TextDecoder('utf-8', {
  fatal: true,
});