From f275c2abfdd4b86e042ec4142ef45879be4f971d Mon Sep 17 00:00:00 2001
From: KazariEX <1364035137@qq.com>
Date: Sat, 2 Nov 2024 17:50:26 +0800
Subject: [PATCH] fix(language-core): generate empty scoped classname for
 `:class`

---
 .../language-core/lib/codegen/template/element.ts | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/packages/language-core/lib/codegen/template/element.ts b/packages/language-core/lib/codegen/template/element.ts
index 583c7b5c8b..2c68310921 100644
--- a/packages/language-core/lib/codegen/template/element.ts
+++ b/packages/language-core/lib/codegen/template/element.ts
@@ -685,11 +685,16 @@ function* generateReferencesForScopedCssClasses(
 			});
 
 			for (const literal of literals) {
-				const classes = collectClasses(
-					literal.text,
-					literal.end - literal.text.length - 1 + startOffset
-				);
-				ctx.scopedClasses.push(...classes);
+				if (literal.text) {
+					const classes = collectClasses(
+						literal.text,
+						literal.end - literal.text.length - 1 + startOffset
+					);
+					ctx.scopedClasses.push(...classes);
+				}
+				else {
+					ctx.emptyClassOffsets.push(literal.end - 1 + startOffset);
+				}
 			}
 
 			function walkArrayLiteral(node: ts.ArrayLiteralExpression) {