降低反复提取封面耗时

src/main.js

@@ -30,7 +30,8 @@ await database.store('musicObjectStore') // 音乐(为什么会用这么丑的
 
 // 读取本地音乐列表并标识为缓存状态(本地缓存)
 const list = await Promise.all((await database.getAll('musicObjectStore')).map(async item => {
-  if (!item.picture) {
+  if (!item.picture && item.picture !== false) {
+    console.log('提取封面', item.name)
     const blob = new Blob([item.arrayBuffer], { type: item.type })
     const metadata = await parseBlob(blob)
     const picture = metadata.common.picture?.[0]
@@ -38,7 +39,10 @@ const list = await Promise.all((await database.getAll('musicObjectStore')).map(a
       const format = picture.format
       const data = picture.data
       item.picture = `data:${format};base64,${Buffer.from(data).toString('base64')}`
+    } else {
+      item.picture = false
     }
+    database.put('musicObjectStore', item)
   }
   return { save: true, ...item }
 }))