Cope with array of lang grammars

Author: chgeo

.vitepress/theme/components/cds-playground/highlighter.js

@@ -4,7 +4,10 @@ import languages from '../../../languages'
 const highlighter = await createHighlighter({
     themes: ['github-dark', 'github-light'],
     langs: ['javascript', 'js', 'sql', 'typescript', 'vue', ...languages],
-    langAlias: Object.fromEntries( languages.map(l => l.aliases?.map(alias => [alias, l.name])) )
+    langAlias: Object.fromEntries(languages.flatMap(l => {
+        if (!l || typeof l !== 'object' || !Array.isArray(l.aliases) || !l.name) return []
+        return l.aliases.map(alias => [alias, l.name])
+    }))
 })
 
 export default highlighter