CHANGELOG.md

 
+<a name="v3.51.1"></a>
+## [v3.51.1] - 2023-06-19
+### Bug Fixes
+- issue [#121](https://gitlab.schukai.com/oss/libraries/javascript/monster/issues/121) bug in extractKeys
+
+
 <a name="v3.51.0"></a>
 ## [v3.51.0] - 2023-06-15
 ### Changes
@@ -650,6 +656,7 @@
 <a name="1.8.0"></a>
 ## 1.8.0 - 2021-08-15
 
+[v3.51.1]: https://gitlab.schukai.com/oss/libraries/javascript/monster/compare/v3.51.0...v3.51.1
 [v3.51.0]: https://gitlab.schukai.com/oss/libraries/javascript/monster/compare/v3.50.0...v3.51.0
 [v3.50.0]: https://gitlab.schukai.com/oss/libraries/javascript/monster/compare/v3.49.0...v3.50.0
 [v3.49.0]: https://gitlab.schukai.com/oss/libraries/javascript/monster/compare/v3.48.0...v3.49.0

application/package.json

 {
   "name": "@schukai/monster",
-  "version": "3.50.0",
+  "version": "3.51.0",
   "description": "Monster is a simple library for creating fast, robust and lightweight websites.",
   "keywords": [
     "framework",

application/source/dom/util/extract-keys.mjs

@@ -22,7 +22,7 @@ function extractKeys(obj, keyPrefix = "", keySeparator = "-", valueSeparator = "
 
     function helper(currentObj, currentKeyPrefix, currentValuePrefix) {
         for (const key in currentObj) {
-            if (typeof currentObj[key] === "object" && !Array.isArray(currentObj[key])) {
+            if (currentObj[key] !== null && typeof currentObj[key] === "object" && !Array.isArray(currentObj[key])) {
                 const newKeyPrefix = currentKeyPrefix
                     ? currentKeyPrefix + keySeparator + key.toLowerCase()
                     : key.toLowerCase();
@@ -41,3 +41,4 @@ function extractKeys(obj, keyPrefix = "", keySeparator = "-", valueSeparator = "
     helper(obj, keyPrefix, keyPrefix);
     return resultMap;
 }
+

application/source/types/version.mjs

@@ -142,7 +142,7 @@ function getMonsterVersion() {
     }
 
     /** don't touch, replaced by make with package.json version */
-    monsterVersion = new Version("3.50.0");
+    monsterVersion = new Version("3.51.0");
 
     return monsterVersion;
 }

development/package.json

 {
   "name": "monster",
-  "version": "3.50.0",
+  "version": "3.51.0",
   "description": "monster",
   "repository": {
     "type": "git",

development/test/cases/dom/util/extract-keys.mjs

+import {expect} from 'chai';
+import {extractKeys} from "../../../../../application/source/dom/util/extract-keys.mjs";
+
+
+describe('extractKeys', () => {
+    it('should extract keys from the given object', () => {
+        const obj = {
+            firstName: 'John',
+            lastName: 'Doe',
+            address: {
+                street: '123 Main St',
+                city: 'New York',
+            },
+        };
+
+        const expected = new Map([
+            ['firstname', 'firstName'],
+            ['lastname', 'lastName'],
+            ['address-street', 'address.street'],
+            ['address-city', 'address.city'],
+        ]);
+
+        const result = extractKeys(obj);
+
+        expect(JSON.stringify(Array.from(result))).to.equal(JSON.stringify(Array.from(expected)));
+    });
+
+    it('should use custom key and value separators', () => {
+        const obj = {
+            firstName: 'John',
+            lastName: 'Doe',
+        };
+
+        const expected = new Map([
+            ['prefix+firstname', 'prefix+firstName'],
+            ['prefix+lastname', 'prefix+lastName'],
+        ]);
+
+        const result = extractKeys(obj, 'prefix', '+', '+');
+
+        expect(JSON.stringify(Array.from(result))).to.equal(JSON.stringify(Array.from(expected)));
+    });
+
+    it('check if value is null', () => {
+        const obj = {
+            firstName: 'John',
+            lastName: 'Doe',
+            address: null,
+        };
+
+        const expected = new Map([
+            ['firstname', 'firstName'],
+            ['lastname', 'lastName'],
+            ['address', 'address'],
+            
+        ]);
+
+        const result = extractKeys(obj);
+
+        expect(JSON.stringify(Array.from(result))).to.equal(JSON.stringify(Array.from(expected)));
+    });
+
+    // Add more test cases as needed
+});

development/test/cases/monster.mjs

@@ -7,7 +7,7 @@ describe('Monster', function () {
         let monsterVersion
 
         /** don´t touch, replaced by make with package.json version */
-        monsterVersion = new Version("3.50.0")
+        monsterVersion = new Version("3.51.0")
 
         let m = getMonsterVersion();
 

release.json

-{"version":"3.51.0"}
+{"version":"3.51.1"}