From 8818a4b5b4932d630fbd0daaee90158455b6fa3b Mon Sep 17 00:00:00 2001
From: Andrew Jones <ajones@digitalbazaar.com>
Date: Wed, 29 May 2024 19:51:57 +0000
Subject: [PATCH] Clone document on addStatic.

---
 CHANGELOG.md                | 5 +++++
 lib/JsonLdDocumentLoader.js | 5 +++--
 package.json                | 3 +++
 3 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6cca54a..175613a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # jsonld-document-loader
 
+## 2.0.1 -
+
+### Changed
+- addStatic deep clones documents to avoid mutation.
+
 ## 2.0.0 - 2023-02-06
 
 ### Changed
diff --git a/lib/JsonLdDocumentLoader.js b/lib/JsonLdDocumentLoader.js
index c073c75..fb212ad 100644
--- a/lib/JsonLdDocumentLoader.js
+++ b/lib/JsonLdDocumentLoader.js
@@ -1,6 +1,7 @@
 /*!
- * Copyright (c) 2019-2023 Digital Bazaar, Inc. All rights reserved.
+ * Copyright (c) 2019-2024 Digital Bazaar, Inc. All rights reserved.
  */
+import {klona} from 'klona';
 
 export class JsonLdDocumentLoader {
   constructor() {
@@ -15,7 +16,7 @@ export class JsonLdDocumentLoader {
     if(!_isObject(document)) {
       throw new TypeError('The second parameter (document) must be an object.');
     }
-    this.documents.set(url, document);
+    this.documents.set(url, klona(document));
   }
 
   /**
diff --git a/package.json b/package.json
index 71ab28c..33ebc7a 100644
--- a/package.json
+++ b/package.json
@@ -52,5 +52,8 @@
   },
   "engines": {
     "node": ">=16"
+  },
+  "dependencies": {
+    "klona": "^2.0.6"
   }
 }