refactor: tidy up

packages/create-instance/add-mocks.js

@@ -1,6 +1,6 @@
 // @flow
 import $$Vue from 'vue'
-import { warn } from 'shared/util'
+import { warn, keys } from 'shared/util'
 
 export default function addMocks(
   _Vue: Component,
@@ -9,7 +9,7 @@ export default function addMocks(
   if (mockedProperties === false) {
     return
   }
-  Object.keys(mockedProperties).forEach(key => {
+  keys(mockedProperties).forEach(key => {
     try {
       // $FlowIgnore
       _Vue.prototype[key] = mockedProperties[key]

packages/create-instance/create-component-stubs.js

@@ -195,7 +195,7 @@ export function createStubsFromStubsObject(
   stubs: Object,
   _Vue: Component
 ): Components {
-  return Object.keys(stubs || {}).reduce((acc, stubName) => {
+  return keys(stubs || {}).reduce((acc, stubName) => {
     let stub = stubs[stubName]
 
     validateStub(stub)

packages/create-instance/create-instance.js

@@ -10,6 +10,7 @@ import { componentNeedsCompiling, isConstructor } from 'shared/validators'
 import createScopedSlots from './create-scoped-slots'
 import { createStubsFromStubsObject } from './create-component-stubs'
 import { patchCreateElement } from './patch-create-element'
+import { keys } from 'shared/util'
 
 function createContext(options, scopedSlots, currentProps) {
   const on = {
@@ -86,8 +87,8 @@ export default function createInstance(
 
   // watchers provided in mounting options should override preexisting ones
   if (componentOptions.watch && instanceOptions.watch) {
-    const componentWatchers = Object.keys(componentOptions.watch)
-    const instanceWatchers = Object.keys(instanceOptions.watch)
+    const componentWatchers = keys(componentOptions.watch)
+    const instanceWatchers = keys(instanceOptions.watch)
 
     for (let i = 0; i < instanceWatchers.length; i++) {
       const k = instanceWatchers[i]

packages/shared/compile-template.js

@@ -2,7 +2,7 @@
 
 import { compileToFunctions } from 'vue-template-compiler'
 import { componentNeedsCompiling } from './validators'
-import { throwError } from './util'
+import { throwError, keys } from './util'
 
 export function compileTemplate(component: Component): void {
   if (component.template) {
@@ -31,7 +31,7 @@ export function compileTemplate(component: Component): void {
   }
 
   if (component.components) {
-    Object.keys(component.components).forEach(c => {
+    keys(component.components).forEach(c => {
       const cmp = component.components[c]
       if (!cmp.render) {
         compileTemplate(cmp)
@@ -49,7 +49,7 @@ export function compileTemplate(component: Component): void {
 }
 
 export function compileTemplateForSlots(slots: Object): void {
-  Object.keys(slots).forEach(key => {
+  keys(slots).forEach(key => {
     const slot = Array.isArray(slots[key]) ? slots[key] : [slots[key]]
     slot.forEach(slotValue => {
       if (componentNeedsCompiling(slotValue)) {

packages/shared/create-local-vue.js

@@ -2,6 +2,7 @@
 
 import Vue from 'vue'
 import cloneDeep from 'lodash/cloneDeep'
+import { keys } from './util'
 
 /**
  * Used internally by vue-server-test-utils and test-utils to propagate/create vue instances.
@@ -17,7 +18,7 @@ function _createLocalVue(
   const instance = _Vue.extend()
 
   // clone global APIs
-  Object.keys(_Vue).forEach(key => {
+  keys(_Vue).forEach(key => {
     if (!instance.hasOwnProperty(key)) {
       const original = _Vue[key]
       // cloneDeep can fail when cloning Vue instances

packages/shared/merge-options.js

@@ -1,12 +1,12 @@
 // @flow
 import { normalizeStubs, normalizeProvide } from './normalize'
-import { warnDeprecated } from 'shared/util'
+import { warnDeprecated, keys } from 'shared/util'
 
 function getOption(option, config?: Object): any {
   if (option === false) {
     return false
   }
-  if (option || (config && Object.keys(config).length > 0)) {
+  if (option || (config && keys(config).length > 0)) {
     if (option instanceof Function) {
       return option
     }
@@ -34,7 +34,7 @@ export function mergeOptions(
   const methods = (getOption(options.methods, config.methods): {
     [key: string]: Function
   })
-  if (methods && Object.keys(methods).length) {
+  if (methods && keys(methods).length) {
     warnDeprecated(
       'overwriting methods via the `methods` property',
       'There is no clear migration path for the `methods` property - Vue does not support arbitrarily replacement of methods, nor should VTU. To stub a complex method extract it from the component and test it in isolation. Otherwise, the suggestion is to rethink those tests'

packages/shared/validate-slots.js

@@ -1,6 +1,6 @@
 // @flow
 
-import { throwError } from 'shared/util'
+import { throwError, keys } from 'shared/util'
 import { compileToFunctions } from 'vue-template-compiler'
 import { isVueComponent } from './validators'
 
@@ -19,7 +19,7 @@ function requiresTemplateCompiler(slot: any): void {
 }
 
 export function validateSlots(slots: SlotsObject): void {
-  Object.keys(slots).forEach(key => {
+  keys(slots).forEach(key => {
     const slot = Array.isArray(slots[key]) ? slots[key] : [slots[key]]
 
     slot.forEach(slotValue => {

packages/shared/validators.js

@@ -1,5 +1,5 @@
 // @flow
-import { throwError, capitalize, camelize, hyphenate } from './util'
+import { throwError, capitalize, camelize, hyphenate, keys } from './util'
 
 export function isDomSelector(selector: any): boolean {
   if (typeof selector !== 'string') {
@@ -64,7 +64,7 @@ export function componentNeedsCompiling(component: Component): boolean {
 export function isRefSelector(refOptionsObject: any): boolean {
   if (
     !isPlainObject(refOptionsObject) ||
-    Object.keys(refOptionsObject || {}).length !== 1
+    keys(refOptionsObject || {}).length !== 1
   ) {
     return false
   }

packages/test-utils/src/create-dom-event.js

@@ -1,4 +1,5 @@
 import eventTypes from 'dom-event-types'
+import { keys } from 'shared/util'
 
 const defaultEventType = {
   eventInterface: 'Event',
@@ -108,7 +109,7 @@ export default function createDOMEvent(type, options) {
       : createOldEvent(eventParams)
 
   const eventPrototype = Object.getPrototypeOf(event)
-  Object.keys(options || {}).forEach(key => {
+  keys(options || {}).forEach(key => {
     const propertyDescriptor = Object.getOwnPropertyDescriptor(
       eventPrototype,
       key

packages/test-utils/src/matches.js

@@ -4,7 +4,7 @@ import {
   FUNCTIONAL_OPTIONS
 } from 'shared/consts'
 import { isConstructor, isFunctionalComponent } from 'shared/validators'
-import { capitalize, camelize } from 'shared/util'
+import { capitalize, camelize, keys } from 'shared/util'
 
 function vmMatchesName(vm, name) {
   // We want to mirror how Vue resolves component names in SFCs:
@@ -48,7 +48,7 @@ function vmCtorMatches(vm, component) {
   }
 
   if (component.functional) {
-    return Object.keys(vm._Ctor || {}).some(c => {
+    return keys(vm._Ctor || {}).some(c => {
       return component === vm._Ctor[c].extendOptions
     })
   }

packages/test-utils/src/recursively-set-data.js

@@ -1,14 +1,15 @@
 import { isPlainObject } from 'shared/validators'
+import { keys } from 'shared/util'
 
 export function recursivelySetData(vm, target, data) {
-  Object.keys(data).forEach(key => {
+  keys(data).forEach(key => {
     const val = data[key]
     const targetVal = target[key]
 
     if (
       isPlainObject(val) &&
       isPlainObject(targetVal) &&
-      Object.keys(val).length > 0
+      keys(val).length > 0
     ) {
       recursivelySetData(vm, targetVal, val)
     } else {

packages/test-utils/src/wrapper.js

@@ -17,7 +17,8 @@ import {
   nextTick,
   warn,
   warnDeprecated,
-  isVueWrapper
+  isVueWrapper,
+  keys
 } from 'shared/util'
 import { isPlainObject } from 'shared/validators'
 import { isElementVisible } from 'shared/is-visible'
@@ -124,17 +125,14 @@ export default class Wrapper implements BaseWrapper {
     let classes = classAttribute ? classAttribute.split(' ') : []
     // Handle converting cssmodules identifiers back to the original class name
     if (this.vm && this.vm.$style) {
-      const cssModuleIdentifiers = Object.keys(this.vm.$style).reduce(
-        (acc, key) => {
-          // $FlowIgnore
-          const moduleIdent = this.vm.$style[key]
-          if (moduleIdent) {
-            acc[moduleIdent.split(' ')[0]] = key
-          }
-          return acc
-        },
-        {}
-      )
+      const cssModuleIdentifiers = keys(this.vm.$style).reduce((acc, key) => {
+        // $FlowIgnore
+        const moduleIdent = this.vm.$style[key]
+        if (moduleIdent) {
+          acc[moduleIdent.split(' ')[0]] = key
+        }
+        return acc
+      }, {})
       classes = classes.map(name => cssModuleIdentifiers[name] || name)
     }
 
@@ -480,7 +478,7 @@ export default class Wrapper implements BaseWrapper {
     const computed = this.vm._computedWatchers
       ? formatJSON(
           // $FlowIgnore
-          ...Object.keys(this.vm._computedWatchers).map(computedKey => ({
+          ...keys(this.vm._computedWatchers).map(computedKey => ({
             // $FlowIgnore
             [computedKey]: this.vm[computedKey]
           }))
@@ -680,7 +678,7 @@ export default class Wrapper implements BaseWrapper {
     }
     this.__warnIfDestroyed()
 
-    Object.keys(methods).forEach(key => {
+    keys(methods).forEach(key => {
       // $FlowIgnore : Problem with possibly null this.vm
       this.vm[key] = methods[key]
       // $FlowIgnore : Problem with possibly null this.vm
@@ -717,7 +715,7 @@ export default class Wrapper implements BaseWrapper {
 
     this.__warnIfDestroyed()
 
-    Object.keys(data).forEach(key => {
+    keys(data).forEach(key => {
       // Don't let people set entire objects, because reactivity won't work
       if (
         isPlainObject(data[key]) &&