From 25df1defd77996a25e00c16ca41a1280712f9980 Mon Sep 17 00:00:00 2001
From: Gerrit Bertier <gerrit.bertier@vanheede.com>
Date: Mon, 4 May 2026 13:06:00 +0200
Subject: [PATCH 1/3] docs: add npm, license, build status and bundle size
 badges

---
 README.md | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/README.md b/README.md
index 246eac6..a2ce22a 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,6 @@
 # jsonkdiff
 
-![Build status](https://github.com/grrtbrtr/jsonkdiff/actions/workflows/test.yml/badge.svg)
-![NPM version](https://img.shields.io/npm/v/@grrtbrtr/jsonkdiff)
+![NPM version](https://img.shields.io/npm/v/@grrtbrtr/jsonkdiff?color=blue) ![License](https://img.shields.io/github/license/grrtbrtr/jsonkdiff) ![Build](https://img.shields.io/github/actions/workflow/status/grrtbrtr/jsonkdiff/test.yml) ![Bundle size](https://img.shields.io/bundlephobia/min/@grrtbrtr/jsonkdiff)
 
 A lightweight, zero-dependency CLI tool to compare multiple JSON files and identify missing (non-common) keys.
 It generates a per-file report of unique keys to help identify schema drift.

From 5ae44dae6e4210c8a69ac12d8cac1e912f3539a3 Mon Sep 17 00:00:00 2001
From: Gerrit Bertier <gerrit.bertier@vanheede.com>
Date: Mon, 4 May 2026 13:06:08 +0200
Subject: [PATCH 2/3] 1.0.2

---
 package-lock.json | 4 ++--
 package.json      | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/package-lock.json b/package-lock.json
index c86a021..e7db798 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@grrtbrtr/jsonkdiff",
-  "version": "1.0.1",
+  "version": "1.0.2",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@grrtbrtr/jsonkdiff",
-      "version": "1.0.1",
+      "version": "1.0.2",
       "license": "GPL-3.0-only",
       "bin": {
         "jsonkdiff": "bin/cli.js"
diff --git a/package.json b/package.json
index 54d1e6a..a894515 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@grrtbrtr/jsonkdiff",
-  "version": "1.0.1",
+  "version": "1.0.2",
   "description": "Compare multiple JSON files and find non-common keys. Generates a per-file report of unique keys to help identify schema drift.",
   "keywords": [
     "json",

From 19291d447ab3f5c59ae8a2375d8613baba1db241 Mon Sep 17 00:00:00 2001
From: Gerrit Bertier <gerrit.bertier@vanheede.com>
Date: Fri, 8 May 2026 16:51:25 +0200
Subject: [PATCH 3/3] refactor: use Object.keys and reduce for getDeepKeys
 traversal

- Replace for...in loop with Object.keys for better prototype safety
- Implement reduce for a more functional, immutable approach
- Maintain recursive support for nested key path generation
---
 src/utils/object-utils.js | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/src/utils/object-utils.js b/src/utils/object-utils.js
index 180dc3e..3019813 100644
--- a/src/utils/object-utils.js
+++ b/src/utils/object-utils.js
@@ -7,14 +7,17 @@
  * @returns {Array.<string>} An array of keys.
  */
 export function getDeepKeys(obj, prefix = '') {
-  let keys = [];
-  for (const key in obj) {
+  return Object.keys(obj).reduce((allKeys, key) => {
     const fullPath = prefix ? `${prefix}.${key}` : key;
-    keys.push(fullPath);
-    
-    if (typeof obj[key] === 'object' && obj[key] !== null && !Array.isArray(obj[key])) {
-      keys = keys.concat(getDeepKeys(obj[key], fullPath));
+    allKeys.push(fullPath);
+
+    if (
+      typeof obj[key] === 'object' &&
+      obj[key] !== null &&
+      !Array.isArray(obj[key])
+    ) {
+      allKeys.push(...getDeepKeys(obj[key], fullPath));
     }
-  }
-  return keys;
+    return allKeys;
+  }, []);
 }
\ No newline at end of file