From 940bacc4485cee5c3f4776b3f73ae9743f2fb6ac Mon Sep 17 00:00:00 2001
From: NullVoxPopuli <199018+NullVoxPopuli@users.noreply.github.com>
Date: Fri, 22 Nov 2024 10:32:56 -0500
Subject: [PATCH 1/2] Don't error on custom-elements

---
 src/parser/transforms.js | 14 +++++++++++++-
 tests/parser.test.js     | 17 +++++++++++++++++
 2 files changed, 30 insertions(+), 1 deletion(-)

diff --git a/src/parser/transforms.js b/src/parser/transforms.js
index 70d2bf9..aee0125 100644
--- a/src/parser/transforms.js
+++ b/src/parser/transforms.js
@@ -492,11 +492,23 @@ module.exports.convertAst = function convertAst(result, preprocessedResult, visi
         * it's NOT a standard html or svg tag, it should have a referenced variable
       */
       const ignore =
-        n.name === 'this' || n.name.startsWith(':') || n.name.startsWith('@') || !scope;
+        // Local instance access
+        n.name === 'this' ||
+        // named block
+        n.name.startsWith(':') ||
+        // argument
+        n.name.startsWith('@') ||
+        // definend rocally
+        !scope ||
+        // custom-elements are allowed to be used even if they don't exist
+        // and are undefined
+        n.name.includes('-');
+
       const registerUndef =
         isUpperCase(n.name[0]) ||
         node.name.includes('.') ||
         (!htmlTags.includes(node.name) && !svgTags.includes(node.name));
+
       if (!ignore && (variable || registerUndef)) {
         registerNodeInScope(n, scope, variable);
       }
diff --git a/tests/parser.test.js b/tests/parser.test.js
index 699fd9a..345ee8c 100644
--- a/tests/parser.test.js
+++ b/tests/parser.test.js
@@ -2720,4 +2720,21 @@ export const NotFound = <template>
 
     expect(result.scopeManager.scopes[0].through.length).toBe(0);
   });
+
+  it('custom-elements are ignored entirely, like they are in the browser', () => {
+    result = parseForESLint(
+      `<template>
+        <my-element></my-element>
+      </template>`,
+      {
+        filePath: 'example.gts',
+        comment: true,
+        loc: true,
+        range: true,
+        tokens: true,
+      }
+    );
+
+    expect(result.scopeManager.scopes[0].through.length).toBe(0);
+  });
 });

From a1de425c09d3f4f954109ab17d2aa04fce04731e Mon Sep 17 00:00:00 2001
From: Liam Potter <liam@liampotter.co.uk>
Date: Fri, 22 Nov 2024 15:36:20 +0000
Subject: [PATCH 2/2] fix typo

Co-authored-by: Bert De Block <deblockbert@gmail.com>
---
 src/parser/transforms.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/parser/transforms.js b/src/parser/transforms.js
index aee0125..67b2194 100644
--- a/src/parser/transforms.js
+++ b/src/parser/transforms.js
@@ -498,7 +498,7 @@ module.exports.convertAst = function convertAst(result, preprocessedResult, visi
         n.name.startsWith(':') ||
         // argument
         n.name.startsWith('@') ||
-        // definend rocally
+        // defined locally
         !scope ||
         // custom-elements are allowed to be used even if they don't exist
         // and are undefined