Use structuredClone over klona.

package.json

@@ -43,7 +43,6 @@
     "chai": "^4.3.6",
     "data-integrity-test-suite-assertion": "github:w3c-ccg/data-integrity-test-suite-assertion",
     "jsonld-document-loader": "^2.0.0",
-    "klona": "^2.0.5",
     "mocha": "^10.0.0",
     "uuid": "^9.0.0",
     "varint": "^6.0.0",

tests/helpers.js

@@ -7,7 +7,6 @@ import * as Ed25519Multikey from '@digitalbazaar/ed25519-multikey';
 import {IdDecoder, IdEncoder} from 'bnid';
 import {documentLoader} from './documentLoader.js';
 import {isUtf8} from 'node:buffer';
-import {klona} from 'klona';
 import {readFileSync} from 'fs';
 import {v4 as uuidv4} from 'uuid';
 import varint from 'varint';
@@ -69,7 +68,7 @@ export async function getVerificationMethodDocuments(proofs) {
 
 export const createInitialVc = async ({issuer, vc}) => {
   const {settings: {id: issuerId, options}} = issuer;
-  const credential = klona(vc);
+  const credential = structuredClone(vc);
   credential.id = `urn:uuid:${uuidv4()}`;
   credential.issuer = issuerId;
   const body = {credential, options};

tests/vc-generator/contexts.js

@@ -7,16 +7,15 @@ import {
 } from '@digitalbazaar/credentials-context';
 import dataIntegrityCtx from '@digitalbazaar/data-integrity-context';
 import didCtx from '@digitalcredentials/did-context';
-import {klona} from 'klona';
 import multikeyCtx from '@digitalbazaar/multikey-context';
 
 const contextMap = new Map(credentialsContexts);
 
-const _dataIntegrityCtx = klona(dataIntegrityCtx.CONTEXT);
+const _dataIntegrityCtx = structuredClone(dataIntegrityCtx.CONTEXT);
 const diCtx = _dataIntegrityCtx['@context'];
 // add UnknownProofType to local context for test data
 diCtx.UnknownProofType =
-  klona(_dataIntegrityCtx['@context'].DataIntegrityProof);
+  structuredClone(_dataIntegrityCtx['@context'].DataIntegrityProof);
 // add invalidPurpose to context for test data
 diCtx.DataIntegrityProof['@context'].proofPurpose['@context'].invalidPurpose = {
   '@id': 'https://w3id.org/security#invalidPurpose',

tests/vc-generator/generators.js

@@ -13,7 +13,6 @@ import {
   cryptosuite as eddsaRdfc2022CryptoSuite
 } from '@digitalbazaar/eddsa-rdfc-2022-cryptosuite';
 import jcsCanonicalize from 'canonicalize';
-import {klona} from 'klona';
 
 export const vcGenerators = new Map([
   ['issuedVc', _issuedVc],
@@ -122,7 +121,7 @@ function _createEddsa2022Suite({signer}) {
 
 async function _issueCloned({suite, credential, loader = documentLoader}) {
   return vc.issue({
-    credential: klona(credential),
+    credential: structuredClone(credential),
     suite,
     documentLoader: loader
   });

tests/vc-generator/index.js

@@ -3,13 +3,12 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 import {getMultikey} from './helpers.js';
-import {klona} from 'klona';
 import {validVc} from './validVc.js';
 import {vcGenerators} from './generators.js';
 
 // cache test data for a single run
 const vcCache = new Map([
-  ['validVc', klona(validVc)]
+  ['validVc', structuredClone(validVc)]
 ]);
 
 /**
@@ -23,7 +22,7 @@ export async function generateTestData() {
     seedMultibase: (process.env?.KEY_SEED_DB ||
       process.env?.CLIENT_SECRET_DB)
   });
-  const credential = klona(validVc);
+  const credential = structuredClone(validVc);
   credential.issuer = issuer;
   for(const [id, generator] of vcGenerators) {
     if(vcCache.get(id)) {
@@ -34,7 +33,7 @@ export async function generateTestData() {
   }
   return {
     clone(key) {
-      return klona(vcCache.get(key));
+      return structuredClone(vcCache.get(key));
     }
   };
 }