fix: shiki fallback language (#1044)

composables/shiki.ts

@@ -32,10 +32,11 @@ export function useHightlighter(lang: Lang) {
       .then(() => {
         registeredLang.value.set(lang, true)
       })
-      .catch((e) => {
-        console.error(`[shiki] Failed to load language ${lang}`)
-        console.error(e)
-        registeredLang.value.set(lang, false)
+      .catch(() => {
+        const fallbackLang = 'md'
+        shiki.value?.loadLanguage(fallbackLang).then(() => {
+          registeredLang.value.set(fallbackLang, true)
+        })
       })
     return undefined
   }

composables/tiptap/shiki.ts

@@ -43,7 +43,7 @@ function getDecorations({
   findChildren(doc, node => node.type.name === name)
     .forEach((block) => {
       let from = block.pos + 1
-      const language = block.node.attrs.language || 'text'
+      const language = block.node.attrs.language
 
       const shiki = useHightlighter(language)