diff --git a/eslint.config.js b/eslint.config.js
index 593995c..c8f2571 100644
--- a/eslint.config.js
+++ b/eslint.config.js
@@ -15,4 +15,15 @@ export default [
   },
   pluginJs.configs.recommended,
   ...tseslint.configs.recommended,
+  {
+    rules: {
+      "no-unused-vars": [
+        "error",
+        {
+          "argsIgnorePattern": "^_",
+          "varsIgnorePattern": "^_",
+        },
+      ],
+    },
+  },
 ];
diff --git a/src/lib/markdown.js b/src/lib/markdown.js
index 8a37276..6b7b55b 100644
--- a/src/lib/markdown.js
+++ b/src/lib/markdown.js
@@ -12,7 +12,7 @@ const alertRegex = /^:>(NOTE|TIP|IMPORTANT|WARNING|CAUTION)/i;
  */
 function remarkAlert/*: Plugin<[Option?], Root> = */() /*=>*/ {
     return (tree) => {
-        visit(tree, "blockquote", (node, index, parent) => {
+        visit(tree, "blockquote", (node, _index, _parent) => {
             let alertType = '';
             let title = '';
             let isNext = true;