refactor: use utils isArray (#756)

Co-authored-by: webfansplz <>

Author: webfansplz

src/mixin.ts

@@ -176,7 +176,7 @@ export function mixin(Vue: VueConstructor) {
       return visited.get(target)
     }
     visited.set(target, false)
-    if (Array.isArray(target) && isReactive(target)) {
+    if (isArray(target) && isReactive(target)) {
       visited.set(target, true)
       return true
     }

src/reactivity/del.ts

@@ -1,6 +1,12 @@
 import { AnyObject } from '../types/basic'
 import { getVueConstructor } from '../runtimeContext'
-import { hasOwn, isPrimitive, isUndef, isValidArrayIndex } from '../utils'
+import {
+  hasOwn,
+  isPrimitive,
+  isUndef,
+  isArray,
+  isValidArrayIndex,
+} from '../utils'
 
 /**
  * Delete a property and trigger change if necessary.
@@ -14,7 +20,7 @@ export function del(target: AnyObject, key: any) {
       `Cannot delete reactive property on undefined, null, or primitive value: ${target}`
     )
   }
-  if (Array.isArray(target) && isValidArrayIndex(key)) {
+  if (isArray(target) && isValidArrayIndex(key)) {
     target.splice(key, 1)
     return
   }

src/reactivity/reactive.ts

@@ -41,7 +41,7 @@ function setupAccessControl(target: AnyObject): void {
   if (
     !isPlainObject(target) ||
     isRaw(target) ||
-    Array.isArray(target) ||
+    isArray(target) ||
     isRef(target) ||
     isComponentInstance(target) ||
     accessModifiedSet.has(target)