Fix: add-attrs and add-listeners correctly restore silent config option

src/lib/add-attrs.js

@@ -1,12 +1,12 @@
 import Vue from 'vue'
 
 export default function addAttrs (vm, attrs) {
-  const originalVueConfig = Vue.config
+  const originalSilent = Vue.config.silent
   Vue.config.silent = true
   if (attrs) {
     vm.$attrs = attrs
   } else {
     vm.$attrs = {}
   }
-  Vue.config.silent = originalVueConfig.silent
+  Vue.config.silent = originalSilent
 }

src/lib/add-listeners.js

@@ -1,12 +1,12 @@
 import Vue from 'vue'
 
 export default function addListeners (vm, listeners) {
-  const originalVueConfig = Vue.config
+  const originalSilent = Vue.config.silent
   Vue.config.silent = true
   if (listeners) {
     vm.$listeners = listeners
   } else {
     vm.$listeners = {}
   }
-  Vue.config.silent = originalVueConfig.silent
+  Vue.config.silent = originalSilent
 }

test/specs/add-attrs.spec.js

@@ -0,0 +1,10 @@
+import Vue from 'vue'
+import addAttrs from '~src/lib/add-attrs'
+
+describe('add-attrs', () => {
+  it('restores silent config value to original value', () => {
+    Vue.config.silent = false
+    addAttrs({}, {})
+    expect(Vue.config.silent).to.be.false
+  })
+})

test/specs/add-listeners.spec.js

@@ -0,0 +1,10 @@
+import Vue from 'vue'
+import addListeners from '~src/lib/add-listeners'
+
+describe('add-listeners', () => {
+  it('restores silent config value to original value', () => {
+    Vue.config.silent = false
+    addListeners({}, {})
+    expect(Vue.config.silent).to.be.false
+  })
+})