fix ssr

package.json

@@ -61,6 +61,7 @@
         "vue": "^2.6.10"
     },
     "devDependencies": {
+        "vue-qr": "^2.2.1",
         "@babel/cli": "7.1.2",
         "@babel/core": "7.1.2",
         "@babel/plugin-syntax-dynamic-import": "7.0.0",
@@ -163,4 +164,4 @@
         "instrument": false,
         "sourceMap": false
     }
-}
+}

src/nutui.js

@@ -120,7 +120,8 @@ import SideNavBarItem from "./packages/sidenavbaritem/index.js";
 import "./packages/sidenavbaritem/sidenavbaritem.scss";
 import Drag from "./packages/drag/index.js";
 import "./packages/drag/drag.scss";
-
+import VueQr from "./packages/qart/index.js";
+import "./packages/qart/qart.scss";
 const packages = {
   Cell,
   Dialog,
@@ -259,6 +260,8 @@ export default {
   locale,
   install,
   Lazyload,
+  VueQr,
+
   ...components,
   ...filters,
   ...directives,