From ee460e275b4b261e10c506808897027a6c7ecb8c Mon Sep 17 00:00:00 2001
From: zhujianchen <11088169@vivo.xyz>
Date: Wed, 10 Apr 2019 21:11:08 +0800
Subject: [PATCH] fix: when prop is object or array, deep=true, watcher's cb
 always run

---
 src/core.js | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/core.js b/src/core.js
index e043a5a..13d26ae 100644
--- a/src/core.js
+++ b/src/core.js
@@ -312,8 +312,10 @@ export default {
           if (~['[object Object]', '[object Array]'].indexOf(getType(this.$props[prop]))) {
             opts.deep = true
           }
-          this.$watch(prop, () => {
-            this.changeHandler()
+          this.$watch(prop, (val, oldVal) => {
+            if (val !== oldVal) {
+              this.changeHandler()
+            }
           }, opts)
         }
       })