Refactor artplayerPluginLibass to use ES6 syntax

packages/artplayer-plugin-libass/src/index.js

@@ -1,25 +1,8 @@
-import LibassAdapter from './adapter'
-
-function checkVersion(art) {
-    const {
-        version,
-        utils: { errorHandle },
-    } = art.constructor
-    const arr = version.split('.').map(Number)
-    const major = arr[0]
-    const minor = arr[1] / 100
-    errorHandle(
-        major + minor >= 5,
-        `Artplayer.js@${version} is not compatible the artplayerPluginLibass@${artplayerPluginLibass.version}. Please update it to version Artplayer.js@5.x.x`,
-    )
-}
+import LibassAdapter from './adapter';
 
 export default function artplayerPluginLibass(option) {
     return (art) => {
-        checkVersion(art)
-
-        let adapter = new LibassAdapter(art, option)
-
+        const adapter = new LibassAdapter(art, option);
         return {
             name: 'artplayerPluginLibass',
             libass: adapter.libass,
@@ -29,14 +12,10 @@ export default function artplayerPluginLibass(option) {
             show: adapter.show.bind(adapter),
             hide: adapter.hide.bind(adapter),
             destroy: adapter.destroy.bind(adapter),
-        }
-    }
+        };
+    };
 }
 
-artplayerPluginLibass.env = process.env.NODE_ENV
-artplayerPluginLibass.version = process.env.APP_VER
-artplayerPluginLibass.build = process.env.BUILD_DATE
-
 if (typeof window !== 'undefined') {
-    window['artplayerPluginLibass'] = artplayerPluginLibass
+    window['artplayerPluginLibass'] = artplayerPluginLibass;
 }