Exclude not enumerable keys of inject object

Author: Elevista

Diff for: src/core/instance/inject.js

@@ -41,7 +41,9 @@ export function resolveInject (inject: any, vm: Component): ?Object {
     // inject is :any because flow is not smart enough to figure out cached
     const result = Object.create(null)
     const keys = hasSymbol
-        ? Reflect.ownKeys(inject)
+        ? Reflect.ownKeys(inject).filter(function (key) {
+          return Reflect.getOwnPropertyDescriptor(inject, key).enumerable
+        })
         : Object.keys(inject)
 
     for (let i = 0; i < keys.length; i++) {

Diff for: src/core/util/env.js

@@ -61,7 +61,7 @@ export function isNative (Ctor: any): boolean {
 
 export const hasSymbol =
   typeof Symbol !== 'undefined' && isNative(Symbol) &&
-  typeof Reflect !== 'undefined' && isNative(Reflect.ownKeys)
+  typeof Reflect !== 'undefined' && isNative(Reflect.ownKeys) && isNative(Reflect.getOwnPropertyDescriptor)
 
 /**
  * Defer a task to execute it asynchronously.