fix(App): tabBar config with nvue

src/platforms/app-plus/service/framework/tab-bar.js

@@ -130,6 +130,7 @@ export default {
     })
   },
   indexOf (page) {
+    const config = this.config
     const itemLength = config && config.list && config.list.length
     if (itemLength) {
       for (let i = 0; i < itemLength; i++) {
@@ -170,16 +171,21 @@ export default {
       }
     })
   },
+  get config () {
+    return config || __uniConfig.tabBar
+  },
   get visible () {
     return visible
   },
   get height () {
+    const config = this.config
     return (config && config.height ? parseFloat(config.height) : TABBAR_HEIGHT) + plus.navigator.getSafeAreaInsets().deviceBottom
   },
   // tabBar是否遮挡内容区域
   get cover () {
+    const config = this.config
     const array = ['extralight', 'light', 'dark']
-    return array.indexOf(config.blurEffect) >= 0
+    return config && array.indexOf(config.blurEffect) >= 0
   },
   setStyle ({ mask }) {
     tabBar.setMask({