添加自动尺寸

packages/artplayer/src/player/playedMix.js

@@ -1,8 +1,5 @@
 export default function seekMix(art, player) {
   Object.defineProperty(player, 'played', {
-    get: () => {
-      const { $video } = art.refs;
-      return $video.currentTime / $video.duration;
-    }
+    get: () => art.refs.$video.currentTime / art.refs.$video.duration
   });
 }