From 4fe4a2cdeb704305c95dbcce10e0b286a5ec9e09 Mon Sep 17 00:00:00 2001
From: iapyang <yklorse@gmail.com>
Date: Tue, 25 Sep 2018 10:03:20 +0800
Subject: [PATCH] BI-33066

---
 dist/fix/fix.ie.js | 58 ++++++++++++++++++++++++++++------------------
 1 file changed, 35 insertions(+), 23 deletions(-)

diff --git a/dist/fix/fix.ie.js b/dist/fix/fix.ie.js
index 358152af86..cfdea92aa3 100644
--- a/dist/fix/fix.ie.js
+++ b/dist/fix/fix.ie.js
@@ -236,7 +236,7 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
         var options = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : {};
 
         var model = vm;
-        if (!model.addWatch && model.$vm) {
+        if (!model.$watch && model.$vm) {
             model = model.$vm;
         }
         if (isPlainObject(cb)) {
@@ -250,7 +250,7 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
         options.user = true;
         var exps = void 0;
         if (_$1.isFunction(expOrFn) || !(exps = expOrFn.match(/[a-zA-Z0-9_.*]+|[|][|]|[&][&]|[(]|[)]/g)) || exps.length === 1 && !/\*/.test(expOrFn)) {
-            model.addWatch(expOrFn, cb, options);
+            model.$watch(expOrFn, cb, options);
 
             return [];
         }
@@ -305,7 +305,7 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
 
                     return result;
                 };
-                model.addWatch(getter, function (newValue, oldValue, attrs) {
+                model.$watch(getter, function (newValue, oldValue, attrs) {
                     callback(i, newValue, oldValue, _$1.extend({ index: i }, attrs));
                 }, _$1.extend(options, {
                     deep: isGlobal
@@ -349,13 +349,13 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
 
                     return currentModels;
                 };
-                model.addWatch(_getter, function (newValue, oldValue, attrs) {
+                model.$watch(_getter, function (newValue, oldValue, attrs) {
                     callback(i, newValue, oldValue, _$1.extend({ index: i }, attrs));
                 }, options);
 
                 return;
             }
-            model.addWatch(exp, function (newValue, oldValue, attrs) {
+            model.$watch(exp, function (newValue, oldValue, attrs) {
                 callback(i, newValue, oldValue, _$1.extend({ index: i }, attrs));
             }, options);
         });
@@ -487,26 +487,37 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
     var allModelInstances = {};
     var emptyFn = function emptyFn() {};
 
-    var Watcher = function Watcher(_ref) {
-        var get = _ref.get,
-            last = _ref.last,
-            listener = _ref.listener,
-            sync = _ref.sync,
-            deep = _ref.deep;
+    var Watcher = function () {
+        function Watcher(_ref) {
+            var get = _ref.get,
+                last = _ref.last,
+                listener = _ref.listener,
+                sync = _ref.sync,
+                deep = _ref.deep;
+
+            _classCallCheck(this, Watcher);
+
+            this.get = get;
+            this.last = cloneShadow(last);
+            this.listener = listener || emptyFn;
+            this.sync = sync || false;
+
+            return {
+                get: this.get,
+                last: this.last,
+                listener: this.listener
+            };
+        }
 
-        _classCallCheck(this, Watcher);
+        // 不要去掉，为了兼容IE8，IE8下instance of Constructor如果不绑定函数会出错
 
-        this.get = get;
-        this.last = cloneShadow(last);
-        this.listener = listener || emptyFn;
-        this.sync = sync || false;
 
-        return {
-            get: this.get,
-            last: this.last,
-            listener: this.listener
+        Watcher.prototype.getInstance = function getInstance() {
+            return this;
         };
-    };
+
+        return Watcher;
+    }();
 
     function initState(vm, state) {
         var watchers = vm._stateWatchers = {};
@@ -628,7 +639,7 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
             var p = vm._parent;
             while (p) {
                 if (p.childContext && p.childContext.indexOf(key) > -1) {
-                    p.addWatch(key, function (cur, last, p) {
+                    p.$watch(key, function (cur, last, p) {
                         if (!vm.alive) return;
                         vm.model[key] = cur;
                         vm._contextWatchers[key].last = cloneShadow(cur); // 避免重复调用（可以改成给watch添加一个参数保证下次比较一定相同）
@@ -749,6 +760,7 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
         var watchers = [].concat(vm._watchers);
 
         _$1.each(watchers, function (watcher) {
+            if (!watcher) return;
             var cur = watcher.get();
             var last = watcher.last;
 
@@ -816,7 +828,7 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
 
         Model.prototype._init = function _init() {};
 
-        Model.prototype.addWatch = function addWatch(expOrFn, cb, options) {
+        Model.prototype.$watch = function $watch(expOrFn, cb, options) {
             var watcher = createWatcher(this, expOrFn, cb, options);
             this._watchers.push(watcher);
         };