fix: 修正 [email protected]+ 项目中使内容显示 undefined 字样

vuejs/vue#12014 (comment)

Author: laomao800

package.json

@@ -31,7 +31,7 @@
   ],
   "peerDependencies": {
     "element-ui": "^2.15.3",
-    "vue": "^2.6.14"
+    "vue": "2.6.12"
   },
   "dependencies": {
     "@laomao800/parse-size-with-unit": "^1.0.3",
@@ -74,8 +74,8 @@
     "rimraf": "^3.0.2",
     "semver": "^7.3.5",
     "typescript": "~4.1.5",
-    "vue": "^2.6.14",
-    "vue-template-compiler": "^2.6.14",
+    "vue": "2.6.12",
+    "vue-template-compiler": "2.6.12",
     "vuepress": "^1.8.2",
     "webpack-node-externals": "^3.0.0"
   },