Update package.json

package.json

@@ -27,10 +27,10 @@
     "url": "https://github.com/eleme/element-ui/issues"
   },
   "dependencies": {
-    "object-assign": "^4.1.0",
-    "typing.js": "^2.1.0"
   },
   "devDependencies": {
+    "object-assign": "^4.1.0",
+    "typing.js": "^2.1.0",
     "babel-helper-vue-jsx-merge-props": "^1.0.1",
     "babel-plugin-syntax-jsx": "^6.8.0",
     "babel-plugin-transform-vue-jsx": "^3.1.0",