From 287af36d7ddf10ec15811004c729973146f295a5 Mon Sep 17 00:00:00 2001
From: thuanbui <thuanbui87@gmail.com>
Date: Thu, 12 Mar 2026 14:23:15 +0900
Subject: [PATCH] fix: use Object.hasOwn to check for existing frontmatter
 fields before injecting custom taxonomy slugs

---
 src/parser.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/parser.js b/src/parser.js
index 0ac7f5c..e9225f6 100644
--- a/src/parser.js
+++ b/src/parser.js
@@ -226,7 +226,7 @@ function populateFrontmatter(posts) {
 		// inject custom taxonomy slugs into frontmatter, each taxonomy as its own field
 		Object.entries(post.customTaxonomies).forEach(([domain, slugs]) => {
 			if (slugs.length > 0) {
-				if (post.frontmatter.hasOwnProperty(domain)) {
+				if (Object.hasOwn(post.frontmatter, domain)) {
 					console.warn(`⚠️  Skipping custom taxonomy '${domain}' on post '${post.slug}' because it conflicts with an existing frontmatter field.`);
 					return;
 				}