From ba7794c61c6198f38648b0baa7867407f277c8b1 Mon Sep 17 00:00:00 2001
From: HerrDietz <32846564+HerrDietz@users.noreply.github.com>
Date: Tue, 28 May 2024 11:15:01 +0200
Subject: [PATCH] fix: ignore state properties in attribute rule #202 (#203)

Allows properties with `state: true` to have non-lowercase names without an attribute being specified
---
 src/rules/attribute-names.ts           | 2 +-
 src/test/rules/attribute-names_test.ts | 9 ++++++++-
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/rules/attribute-names.ts b/src/rules/attribute-names.ts
index c0b1ed8..70277d1 100644
--- a/src/rules/attribute-names.ts
+++ b/src/rules/attribute-names.ts
@@ -37,7 +37,7 @@ const rule: Rule.RuleModule = {
           const propertyMap = getPropertyMap(node);
 
           for (const [prop, propConfig] of propertyMap.entries()) {
-            if (!propConfig.attribute) {
+            if (!propConfig.attribute || propConfig.state) {
               continue;
             }
 
diff --git a/src/test/rules/attribute-names_test.ts b/src/test/rules/attribute-names_test.ts
index 7c41445..80ee3f3 100644
--- a/src/test/rules/attribute-names_test.ts
+++ b/src/test/rules/attribute-names_test.ts
@@ -38,7 +38,14 @@ ruleTester.run('attribute-names', rule, {
         };
       }
     }`,
-    `class Foo extends Litelement {
+    `class Foo extends LitElement {
+      static get properties() {
+        return {
+          internalState: {type: String, state: true}
+        };
+      }
+    }`,
+    `class Foo extends LitElement {
       static get properties() {
         return {
           camelCase: {type: String, attribute: 'lowercase'}