fix(compiler-core): recognize empty string as non-identifier (#12553)

diff --git a/packages/compiler-core/src/utils.ts b/packages/compiler-core/src/utils.ts
index b49d70bb2fba1d207e9ef76ab5d35cefcaec91aa..113096cef2277160907837650b20a32cb8a6b92e 100644 (file)
--- a/packages/compiler-core/src/utils.ts
+++ b/packages/compiler-core/src/utils.ts
@@ -63,7 +63,7 @@ export function isCoreComponent(tag: string): symbol | void {
   }
 }
 
-const nonIdentifierRE = /^\d|[^\$\w\xA0-\uFFFF]/
+const nonIdentifierRE = /^$|^\d|[^\$\w\xA0-\uFFFF]/
 export const isSimpleIdentifier = (name: string): boolean =>
   !nonIdentifierRE.test(name)