diff --git a/packages/fineui/src/fix/fix.js b/packages/fineui/src/fix/fix.js
index 92cba70f8..a28f5e4a8 100644
--- a/packages/fineui/src/fix/fix.js
+++ b/packages/fineui/src/fix/fix.js
@@ -1,11 +1,72 @@
 import { _ } from "@/core";
 
-function _classCallCheck(instance, Constructor) {
-    if (!(instance instanceof Constructor)) {
-        throw new TypeError("Cannot call a class as a function");
+let uid = 0;
+
+const pendingCleanupDeps = [];
+
+const cleanupDeps = () => {
+    for (let i = 0; i < pendingCleanupDeps.length; i++) {
+        const dep = pendingCleanupDeps[i];
+        dep.subs = dep.subs.filter(s => s);
+        dep._pending = false;
+    }
+    pendingCleanupDeps.length = 0;
+};
+
+
+/**
+ * A dep is an observable that can have multiple
+ * directives subscribing to it.
+ */
+class Dep {
+    constructor() {
+        this.id = uid++;
+        this._pending = false;
+        this.subs = [];
+    }
+
+    addSub(sub) {
+        this.subs.push(sub);
+    }
+
+    removeSub(sub) {
+        this.subs[this.subs.indexOf(sub)] = null;
+        if (!this._pending) {
+            this._pending = true;
+            pendingCleanupDeps.push(this);
+        }
+    }
+
+    depend() {
+        if (Dep.target) {
+            Dep.target.addDep(this);
+        }
+    }
+
+    notify(options) {
+        // stabilize the subscriber list first
+        const subs = this.subs.filter(s => s);
+        for (let i = 0, l = subs.length; i < l; i++) {
+            subs[i].update(options);
+        }
     }
 }
 
+// the current target watcher being evaluated.
+// this is globally unique because there could be only one
+// watcher being evaluated at any time.
+Dep.target = null;
+const targetStack = [];
+
+function pushTarget(_target) {
+    if (Dep.target) targetStack.push(Dep.target);
+    Dep.target = _target;
+}
+
+function popTarget() {
+    Dep.target = targetStack.pop();
+}
+
 function noop(a, b, c) {
 }
 
@@ -13,6 +74,7 @@ function isNative(Ctor) {
     return typeof Ctor === "function" && /native code/.test(Ctor.toString());
 }
 
+
 const hasProto = "__proto__" in {};
 
 const _toString = Object.prototype.toString;
@@ -23,13 +85,10 @@ function isPlainObject(obj) {
 
 function isConfigurable(obj, key) {
     let configurable = true;
-    const property =
-        Object.getOwnPropertyDescriptor &&
-        Object.getOwnPropertyDescriptor(obj, key);
+    const property = Object.getOwnPropertyDescriptor && Object.getOwnPropertyDescriptor(obj, key);
     if (property && property.configurable === false) {
         configurable = false;
     }
-
     return configurable;
 }
 
@@ -42,17 +101,17 @@ function isExtensible(obj) {
         name += "?";
     }
     obj[name] = true;
-    const returnValue = obj.hasOwnProperty(name);
+    let returnValue = obj.hasOwnProperty(name);
     delete obj[name];
-
     return returnValue;
 }
 
+
 function remove(arr, item) {
     if (arr && arr.length) {
-        const _index = arr.indexOf(item);
-        if (_index > -1) {
-            return arr.splice(_index, 1);
+        const index = arr.indexOf(item);
+        if (index > -1) {
+            return arr.splice(index, 1);
         }
     }
 }
@@ -65,21 +124,19 @@ function parsePath(path) {
     //     return
     // }
     const segments = path.split(".");
-
-    return function(obj) {
+    return function (obj) {
         for (let i = 0; i < segments.length; i++) {
             if (!obj) return;
             obj = obj[segments[i]];
         }
-
         return obj;
     };
 }
 
-const nextTick = (function() {
+const nextTick = (function () {
     const callbacks = [];
     let pending = false;
-    let timerFunc = void 0;
+    let timerFunc;
 
     function nextTickHandler() {
         pending = false;
@@ -100,37 +157,37 @@ const nextTick = (function() {
     // same loop is by using MessageChannel.
     /* istanbul ignore if */
     if (typeof setImmediate !== "undefined" && isNative(setImmediate)) {
-        timerFunc = function timerFunc() {
+        timerFunc = () => {
             setImmediate(nextTickHandler);
         };
-    } else if (
-        typeof MessageChannel !== "undefined" &&
-        (isNative(MessageChannel) ||
-            // PhantomJS
-            MessageChannel.toString() === "[object MessageChannelConstructor]")
-    ) {
+    } else if (typeof MessageChannel !== "undefined" && (
+        isNative(MessageChannel) ||
+        // PhantomJS
+        MessageChannel.toString() === "[object MessageChannelConstructor]"
+    )) {
         const channel = new MessageChannel();
         const port = channel.port2;
         channel.port1.onmessage = nextTickHandler;
-        timerFunc = function timerFunc() {
+        timerFunc = () => {
             port.postMessage(1);
         };
-    } else if (typeof Promise !== "undefined" && isNative(Promise)) {
+    } else
         /* istanbul ignore next */
+    if (typeof Promise !== "undefined" && isNative(Promise)) {
         // use microtask in non-DOM environments, e.g. Weex
         const p = Promise.resolve();
-        timerFunc = function timerFunc() {
+        timerFunc = () => {
             p.then(nextTickHandler);
         };
     } else {
         // fallback to setTimeout
-        timerFunc = function timerFunc() {
+        timerFunc = () => {
             setTimeout(nextTickHandler, 0);
         };
     }
 
     return function queueNextTick(cb, ctx) {
-        let _resolve = void 0;
+        let _resolve;
         callbacks.push(() => {
             if (cb) {
                 try {
@@ -155,7 +212,7 @@ const nextTick = (function() {
     };
 })();
 
-let falsy;
+var falsy;
 const $$skipArray = {
     __ob__: falsy,
     $accessors: falsy,
@@ -163,64 +220,8 @@ const $$skipArray = {
     $vbsetter: falsy
 };
 
-let uid = 0;
-
-/**
- * A dep is an observable that can have multiple
- * directives subscribing to it.
- */
-
-const Dep = (function() {
-    function Dep() {
-        _classCallCheck(this, Dep);
-
-        this.id = uid++;
-        this.subs = [];
-    }
-
-    Dep.prototype.addSub = function addSub(sub) {
-        this.subs.push(sub);
-    };
-
-    Dep.prototype.removeSub = function removeSub(sub) {
-        remove(this.subs, sub);
-    };
-
-    Dep.prototype.depend = function depend() {
-        if (Dep.target) {
-            Dep.target.addDep(this);
-        }
-    };
-
-    Dep.prototype.notify = function notify(options) {
-        // stabilize the subscriber list first
-        const subs = this.subs.slice();
-        for (let i = 0, l = subs.length; i < l; i++) {
-            subs[i].update(options);
-        }
-    };
-
-    return Dep;
-})();
-
-// the current target watcher being evaluated.
-// this is globally unique because there could be only one
-// watcher being evaluated at any time.
-
-Dep.target = null;
-const targetStack = [];
-
-function pushTarget(_target) {
-    if (Dep.target) targetStack.push(Dep.target);
-    Dep.target = _target;
-}
-
-function popTarget() {
-    Dep.target = targetStack.pop();
-}
-
-// 如果浏览器不支持ecma262v5的Object.defineProperties或者存在BUG，比如IE8
-// 标准浏览器使用__defineGetter__, __defineSetter__实现
+//如果浏览器不支持ecma262v5的Object.defineProperties或者存在BUG，比如IE8
+//标准浏览器使用__defineGetter__, __defineSetter__实现
 let canHideProperty = true;
 try {
     Object.defineProperty({}, "_", {
@@ -233,13 +234,14 @@ try {
     canHideProperty = false;
 }
 
+
 let createViewModel = Object.defineProperties;
-let defineProperty = void 0;
+let defineProperty;
 
 /* istanbul ignore if*/
 if (!canHideProperty) {
     if ("__defineGetter__" in {}) {
-        defineProperty = function defineProperty(obj, prop, desc) {
+        defineProperty = function (obj, prop, desc) {
             if ("value" in desc) {
                 obj[prop] = desc.value;
             }
@@ -249,22 +251,20 @@ if (!canHideProperty) {
             if ("set" in desc) {
                 obj.__defineSetter__(prop, desc.set);
             }
-
             return obj;
         };
-        createViewModel = function createViewModel(obj, descs) {
-            for (const prop in descs) {
+        createViewModel = function (obj, descs) {
+            for (var prop in descs) {
                 if (descs.hasOwnProperty(prop)) {
                     defineProperty(obj, prop, descs[prop]);
                 }
             }
-
             return obj;
         };
     }
 }
 
-const createViewModel$1 = createViewModel;
+var createViewModel$1 = createViewModel;
 
 const queue = [];
 const activatedChildren = [];
@@ -281,9 +281,7 @@ function resetSchedulerState() {
 
 function flushSchedulerQueue() {
     flushing = true;
-    let watcher = void 0,
-        id = void 0,
-        options = void 0;
+    let watcher, id, options;
 
     // Sort queue before flush.
     // This ensures that:
@@ -306,14 +304,16 @@ function flushSchedulerQueue() {
     }
 
     resetSchedulerState();
+    cleanupDeps();
 }
 
+
 function queueWatcher(watcher, options) {
     const id = watcher.id;
     if (has[id] == null) {
         has[id] = true;
         if (!flushing) {
-            queue.push({ watcher, options });
+            queue.push({ watcher: watcher, options: options });
         } else {
             // if already flushing, splice the watcher based on its id
             // if already past its id, it will be run next immediately.
@@ -321,7 +321,7 @@ function queueWatcher(watcher, options) {
             while (i > index && queue[i].watcher.id > watcher.id) {
                 i--;
             }
-            queue.splice(i + 1, 0, { watcher, options });
+            queue.splice(i + 1, 0, { watcher: watcher, options: options });
         }
         // queue the flush
         if (!waiting) {
@@ -333,10 +333,11 @@ function queueWatcher(watcher, options) {
 
 let uid$1 = 0;
 
-const Watcher = (function() {
-    function Watcher(vm, expOrFn, cb, options) {
-        _classCallCheck(this, Watcher);
-
+class Watcher {
+    constructor(vm,
+                expOrFn,
+                cb,
+                options) {
         this.vm = vm;
         // vm._watchers || (vm._watchers = [])
         // vm._watchers.push(this)
@@ -364,16 +365,18 @@ const Watcher = (function() {
         } else {
             this.getter = parsePath(expOrFn);
             if (!this.getter) {
-                this.getter = function() {
+                this.getter = function () {
                 };
             }
         }
-        this.value = this.lazy ? undefined : this.get();
+        this.value = this.lazy
+            ? undefined
+            : this.get();
     }
 
-    Watcher.prototype.get = function get() {
+    get() {
         pushTarget(this);
-        let value = void 0;
+        let value;
         const vm = this.vm;
         try {
             value = this.getter.call(vm, vm);
@@ -391,11 +394,10 @@ const Watcher = (function() {
             popTarget();
             this.cleanupDeps();
         }
-
         return value;
-    };
+    }
 
-    Watcher.prototype.addDep = function addDep(dep) {
+    addDep(dep) {
         const id = dep.id;
         if (!this.newDepIds.has(id)) {
             this.newDepIds.add(id);
@@ -404,9 +406,9 @@ const Watcher = (function() {
                 dep.addSub(this);
             }
         }
-    };
+    }
 
-    Watcher.prototype.cleanupDeps = function cleanupDeps() {
+    cleanupDeps() {
         let i = this.deps.length;
         while (i--) {
             const dep = this.deps[i];
@@ -422,9 +424,9 @@ const Watcher = (function() {
         this.deps = this.newDeps;
         this.newDeps = tmp;
         this.newDeps.length = 0;
-    };
+    }
 
-    Watcher.prototype.update = function update(options) {
+    update(options) {
         /* istanbul ignore else */
         if (this.lazy) {
             this.dirty = true;
@@ -433,9 +435,9 @@ const Watcher = (function() {
         } else {
             queueWatcher(this, options);
         }
-    };
+    }
 
-    Watcher.prototype.run = function run(options) {
+    run(options) {
         if (this.active) {
             const value = this.get();
             if (
@@ -443,8 +445,7 @@ const Watcher = (function() {
                 // Deep watchers and watchers on Object/Arrays should fire even
                 // when the value is the same, because the value may
                 // have mutated.
-                (_.isObject(value) && options && options.refresh) ||
-                this.deep
+                (_.isObject(value) && options && options.refresh) || this.deep
             ) {
                 // set new value
                 const oldValue = this.value;
@@ -464,21 +465,21 @@ const Watcher = (function() {
                 }
             }
         }
-    };
+    }
 
-    Watcher.prototype.evaluate = function evaluate() {
+    evaluate() {
         this.value = this.get();
         this.dirty = false;
-    };
+    }
 
-    Watcher.prototype.depend = function depend() {
+    depend() {
         let i = this.deps.length;
         while (i--) {
             this.deps[i].depend();
         }
-    };
+    }
 
-    Watcher.prototype.teardown = function teardown() {
+    teardown() {
         if (this.active) {
             // remove self from vm's watcher list
             // this is a somewhat expensive operation so we skip it
@@ -490,10 +491,8 @@ const Watcher = (function() {
             }
             this.active = false;
         }
-    };
-
-    return Watcher;
-})();
+    }
+}
 
 const seenObjects = new Set();
 
@@ -503,10 +502,9 @@ function traverse(val) {
 }
 
 function _traverse(val, seen) {
-    let i = void 0,
-        keys = void 0;
+    let i, keys;
     const isA = _.isArray(val);
-    if (!isA && !_.isObject(val)) {
+    if ((!isA && !_.isObject(val))) {
         return;
     }
     if (val.__ob__) {
@@ -518,65 +516,55 @@ function _traverse(val, seen) {
     }
     if (isA) {
         i = val.length;
-        while (i--) {
-            _traverse(val[i], seen);
-        }
+        while (i--) _traverse(val[i], seen);
     } else {
         keys = _.keys(val);
         i = keys.length;
-        while (i--) {
-            _traverse(val[keys[i]], seen);
-        }
+        while (i--) _traverse(val[keys[i]], seen);
     }
 }
 
 const arrayProto = Array.prototype;
 const arrayMethods = [];
-_.each(
-    ["push", "pop", "shift", "unshift", "splice", "sort", "reverse"],
-    (method) => {
-        const original = arrayProto[method];
-        arrayMethods[method] = function mutator() {
-            for (
-                var _len = arguments.length, args = Array(_len), _key2 = 0;
-                _key2 < _len;
-                _key2++
-            ) {
-                args[_key2] = arguments[_key2];
-            }
-
-            const ob = this.__ob__;
-            let inserted = void 0;
-            switch (method) {
-                case "push":
-                case "unshift":
-                    inserted = args;
-                    break;
-                case "splice":
-                    inserted = args.slice(2);
-                    break;
-            }
-            if (inserted) inserted = ob.observeArray(inserted);
-            switch (method) {
-                case "push":
-                case "unshift":
-                    args = inserted;
-                    break;
-                case "splice":
-                    if (args.length > 2) {
-                        args = [args[0], args[1]].concat(
-                            inserted ? inserted : []
-                        );
-                    }
-                    break;
-            }
-            const result = original.apply(this, args);
-            notify(ob.parent, ob.parentKey, ob.dep, true);
-
-            return result;
-        };
-    }
-);
+_.each([
+    "push",
+    "pop",
+    "shift",
+    "unshift",
+    "splice",
+    "sort",
+    "reverse"
+], function (method) {
+    const original = arrayProto[method];
+    arrayMethods[method] = function mutator(...args) {
+        const ob = this.__ob__;
+        let inserted;
+        switch (method) {
+            case "push":
+            case "unshift":
+                inserted = args;
+                break;
+            case "splice":
+                inserted = args.slice(2);
+                break;
+        }
+        if (inserted) inserted = ob.observeArray(inserted);
+        switch (method) {
+            case "push":
+            case "unshift":
+                args = inserted;
+                break;
+            case "splice":
+                if (args.length > 2) {
+                    args = [args[0], args[1]].concat(inserted ? inserted : []);
+                }
+                break;
+        }
+        const result = original.apply(this, args);
+        notify(ob.parent, ob.parentKey, ob.dep, true);
+        return result;
+    };
+});
 
 const arrayKeys = _.keys(arrayMethods);
 
@@ -599,16 +587,15 @@ function def(obj, key, val, enumerable) {
  * object's property keys into getter/setters that
  * collect dependencies and dispatches updates.
  */
-
-const Observer = (function() {
-    function Observer(value) {
-        _classCallCheck(this, Observer);
-
+class Observer {
+    constructor(value) {
         this.value = value;
         this.dep = new Dep();
         this.vmCount = 0;
         if (_.isArray(value)) {
-            const augment = hasProto ? protoAugment : copyAugment;
+            const augment = hasProto
+                ? protoAugment
+                : copyAugment;
             augment(value, arrayMethods, arrayKeys);
             this.model = this.observeArray(value);
         } else {
@@ -617,26 +604,21 @@ const Observer = (function() {
         def(this.model, "__ob__", this);
     }
 
-    Observer.prototype.walk = function walk(obj) {
+    walk(obj) {
         return defineReactive(obj, this);
-    };
+    }
 
-    Observer.prototype.observeArray = function observeArray(items) {
+    observeArray(items) {
         for (let i = 0, l = items.length; i < l; i++) {
             const ob = observe(items[i], this, i);
             items[i] = ob ? ob.model : items[i];
         }
-
         return items;
-    };
-
-    return Observer;
-})();
+    }
+}
 
 function protoAugment(target, src, keys) {
-    /* eslint-disable no-proto */
     Object.setPrototypeOf(target, src);
-    /* eslint-enable no-proto */
 }
 
 /* istanbul ignore next */
@@ -651,12 +633,11 @@ function observe(value, parentObserver, parentKey) {
     if (!_.isObject(value)) {
         return;
     }
-    let ob = void 0;
+    let ob;
     if (value.__ob__ instanceof Observer) {
         ob = value.__ob__;
     } else if (
-        observerState.shouldConvert &&
-        isExtensible(value) &&
+        observerState.shouldConvert && isExtensible(value) &&
         (_.isArray(value) || isPlainObject(value))
     ) {
         ob = new Observer(value);
@@ -665,39 +646,33 @@ function observe(value, parentObserver, parentKey) {
         ob.parent = parentObserver || ob.parent;
         ob.parentKey = parentKey;
     }
-
     return ob;
 }
 
 function notify(observer, key, dep, refresh) {
-    dep.notify({ observer, key, refresh });
+    dep.notify({ observer: observer, key: key, refresh: refresh });
     if (observer) {
-        // 触发a.*绑定的依赖
-        _.each(observer._deps, (dep) => {
-            dep.notify({ observer, key });
+        //触发a.*绑定的依赖
+        _.each(observer._deps, function (dep) {
+            dep.notify({ observer: observer, key: key });
         });
-        // 触发a.**绑定的依赖
-        let parent = observer,
-            root = observer,
-            route = key || "";
+        //触发a.**绑定的依赖
+        let parent = observer, root = observer, route = key || "";
         while (parent) {
-            _.each(parent._scopeDeps, (dep) => {
-                dep.notify({ observer, key });
+            _.each(parent._scopeDeps, function (dep) {
+                dep.notify({ observer: observer, key: key });
             });
             if (parent.parentKey != null) {
-                route = `${parent.parentKey}.${route}`;
+                route = parent.parentKey + "." + route;
             }
             root = parent;
             parent = parent.parent;
         }
-        for (const _key in root._globalDeps) {
+        for (let _key in root._globalDeps) {
             const reg = new RegExp(_key);
             if (reg.test(route)) {
                 for (let i = 0; i < root._globalDeps[_key].length; i++) {
-                    root._globalDeps[_key][i].notify({
-                        observer,
-                        key: _key
-                    });
+                    root._globalDeps[_key][i].notify({ observer: observer, key: _key });
                 }
             }
         }
@@ -706,14 +681,14 @@ function notify(observer, key, dep, refresh) {
 
 function defineReactive(obj, observer, shallow) {
     const props = {};
-    let model = void 0;
-    _.each(obj, (val, key) => {
+    let model;
+    _.each(obj, function (val, key) {
         if (key in $$skipArray) {
             return;
         }
-        const configurable = isConfigurable(obj, key);
-        const dep = (observer && observer[`__dep${key}`]) || new Dep();
-        observer && (observer[`__dep${key}`] = dep);
+        let configurable = isConfigurable(obj, key);
+        const dep = (observer && observer["__dep" + key]) || new Dep();
+        observer && (observer["__dep" + key] = dep);
         let childOb = configurable && !shallow && observe(val, observer, key);
         props[key] = {
             enumerable: true,
@@ -729,20 +704,15 @@ function defineReactive(obj, observer, shallow) {
                         }
                     }
                 }
-
                 return value;
             },
             set: function reactiveSetter(newVal) {
                 const value = childOb ? childOb.model : val;
-                if (
-                    newVal === value ||
-                    (newVal !== newVal && value !== value)
-                ) {
+                if (newVal === value || (newVal !== newVal && value !== value)) {
                     return;
                 }
                 val = newVal;
-                childOb =
-                    configurable && !shallow && observe(newVal, observer, key);
+                childOb = configurable && !shallow && observe(newVal, observer, key);
                 if (childOb && value && value.__ob__) {
                     childOb._scopeDeps = value.__ob__._scopeDeps;
                     childOb._deps = value.__ob__._deps;
@@ -752,14 +722,14 @@ function defineReactive(obj, observer, shallow) {
             }
         };
     });
-
-    return (model = createViewModel$1(obj, props));
+    return model = createViewModel$1(obj, props);
 }
 
 function defineReactiveProperty(obj, key, val, shallow) {
+
     const dep = new Dep();
 
-    const configurable = isConfigurable(obj, key);
+    let configurable = isConfigurable(obj, key);
     if (!configurable) {
         return;
     }
@@ -783,7 +753,6 @@ function defineReactiveProperty(obj, key, val, shallow) {
                     }
                 }
             }
-
             return value;
         },
         set: function reactiveSetter(newVal) {
@@ -809,24 +778,20 @@ function set(target, key, val) {
     if (_.isArray(target)) {
         target.length = Math.max(target.length, key);
         target.splice(key, 1, val);
-
         return val;
     }
     if (_.has(target, key)) {
         target[key] = val;
-
         return val;
     }
-    const ob = target.__ob__;
+    const ob = (target).__ob__;
     if (!ob) {
         target[key] = val;
-
         return val;
     }
     ob.value[key] = val;
     target = defineReactive(ob.value, ob);
     notify(ob, key, ob.dep);
-
     return target;
 }
 
@@ -840,22 +805,19 @@ function freeze() {
 function del(target, key) {
     if (_.isArray(target)) {
         target.splice(key, 1);
-
         return;
     }
-    const ob = target.__ob__;
+    const ob = (target).__ob__;
     if (!_.has(target, key)) {
         return;
     }
     if (!ob) {
         delete target[key];
-
         return target;
     }
     delete ob.value[key];
     target = defineReactive(ob.value, ob);
     notify(ob, key, ob.dep);
-
     return target;
 }
 
@@ -864,7 +826,7 @@ function del(target, key) {
  * we cannot intercept array element access like property getters.
  */
 function dependArray(value) {
-    for (var e, i = 0, l = value.length; i < l; i++) {
+    for (let e, i = 0, l = value.length; i < l; i++) {
         e = value[i];
         e && e.__ob__ && e.__ob__.dep.depend();
         if (_.isArray(e)) {
@@ -873,7 +835,7 @@ function dependArray(value) {
     }
 }
 
-let falsy$1;
+var falsy$1;
 const operators = {
     "||": falsy$1,
     "&&": falsy$1,
@@ -890,16 +852,13 @@ function runBinaryFunction(binarys) {
             expr += "false";
         }
     }
-
-    return new Function(`return ${expr}`)();
+    return new Function("return " + expr)();
 }
 
-function routeToRegExp(route) {
-    route = route
-        .replace(/\*\*/g, "[a-zA-Z0-9_]+")
-        .replace(/\*./g, "[a-zA-Z0-9_]+.");
 
-    return `^${route}$`;
+function routeToRegExp(route) {
+    route = route.replace(/\*\*/g, "[a-zA-Z0-9_]+").replace(/\*./g, "[a-zA-Z0-9_]+.");
+    return "^" + route + "$";
 }
 
 function watch(model, expOrFn, cb, options) {
@@ -912,26 +871,20 @@ function watch(model, expOrFn, cb, options) {
     }
     options = options || {};
     options.user = true;
-    let exps = void 0;
-    if (
-        _.isFunction(expOrFn) ||
-        !(exps = expOrFn.match(/[a-zA-Z0-9_.*]+|[|][|]|[&][&]|[(]|[)]/g)) ||
-        (exps.length === 1 && expOrFn.indexOf("*") < 0)
-    ) {
+    let exps;
+    if (_.isFunction(expOrFn) || !(exps = expOrFn.match(/[a-zA-Z0-9_.*]+|[|][|]|[&][&]|[(]|[)]/g)) || (exps.length === 1 && expOrFn.indexOf("*") < 0)) {
         const watcher = new Watcher(model, expOrFn, cb, options);
         if (options.immediate) {
             cb(watcher.value);
         }
-
         return function unwatchFn() {
             watcher.teardown();
         };
     }
     const watchers = [];
     let fns = exps.slice();
-    let complete = false,
-        running = false;
-    const callback = function callback(index, newValue, oldValue, attrs) {
+    let complete = false, running = false;
+    const callback = function (index, newValue, oldValue, attrs) {
         if (complete === true) {
             return;
         }
@@ -947,7 +900,7 @@ function watch(model, expOrFn, cb, options) {
         } else {
             if (!running) {
                 running = true;
-                nextTick(() => {
+                nextTick(function () {
                     complete = false;
                     running = false;
                     fns = exps.slice();
@@ -955,62 +908,42 @@ function watch(model, expOrFn, cb, options) {
             }
         }
     };
-    _.each(exps, (exp, i) => {
+    _.each(exps, function (exp, i) {
         if (_.has(operators, exp)) {
             return;
         }
         if (exp.indexOf("*") >= 0) {
-            // a.**或a.*形式
-            if (
-                /^[1-9a-zA-Z.]+(\*\*$|\*$)/.test(exp) ||
-                exp === "**" ||
-                exp === "*"
-            ) {
+            //a.**或a.*形式
+            if (/^[1-9a-zA-Z.]+(\*\*$|\*$)/.test(exp) || exp === "**" || exp === "*") {
                 const isGlobal = exp.indexOf("**") >= 0;
                 if (isGlobal) {
-                    // a.**的形式
+                    //a.**的形式
                     exp = exp.replace(".**", "");
                 } else {
-                    // a.*的形式
+                    //a.*的形式
                     exp = exp.replace(".*", "");
                 }
-                const getter =
-                    exp === "**" || exp === "*"
-                        ? function(m) {
-                            return m;
-                        }
-                        : parsePath(exp);
+                const getter = (exp === "**" || exp === "*") ? function (m) {
+                    return m;
+                } : parsePath(exp);
                 const v = getter.call(model, model);
                 if (v.__ob__) {
-                    const _dep = new Dep();
+                    const dep = new Dep();
                     if (isGlobal) {
-                        (v.__ob__._scopeDeps || (v.__ob__._scopeDeps = [])).push(
-                            _dep
-                        );
+                        (v.__ob__._scopeDeps || (v.__ob__._scopeDeps = [])).push(dep);
                     } else {
-                        (v.__ob__._deps || (v.__ob__._deps = [])).push(_dep);
+                        (v.__ob__._deps || (v.__ob__._deps = [])).push(dep);
                     }
-                    const _w = new Watcher(
-                        model,
-                        () => {
-                            _dep.depend();
-
-                            return NaN;
-                        },
-                        (newValue, oldValue, attrs) => {
-                            callback(
-                                i,
-                                newValue,
-                                oldValue,
-                                _.extend({ index: i }, attrs)
-                            );
-                        },
-                        options
-                    );
-                    watchers.push(() => {
-                        _w.teardown();
-                        v.__ob__._scopeDeps && remove(v.__ob__._scopeDeps, _dep);
-                        v.__ob__._deps && remove(v.__ob__._deps, _dep);
+                    const w = new Watcher(model, function () {
+                        dep.depend();
+                        return NaN;
+                    }, function (newValue, oldValue, attrs) {
+                        callback(i, newValue, oldValue, _.extend({ index: i }, attrs));
+                    }, options);
+                    watchers.push(function unwatchFn() {
+                        w.teardown();
+                        v.__ob__._scopeDeps && remove(v.__ob__._scopeDeps, dep);
+                        v.__ob__._deps && remove(v.__ob__._deps, dep);
                     });
                 }
 
@@ -1018,87 +951,71 @@ function watch(model, expOrFn, cb, options) {
             }
             // **.a.**的情况，场景：a.b.c, 如果用b.**监听, a被重新赋值b上的_scopeDes就不存在了
             if (/^(\*\*\.)+[1-9a-zA-Z]+(\.\*\*$)/.test(exp)) {
-                // 先获取到能获取到的对象
-                const _paths = exp.split(".");
-                const _currentModel = model[_paths[1]];
+                //先获取到能获取到的对象
+                const paths = exp.split(".");
+                const currentModel = model[paths[1]];
 
-                if (!_currentModel.__ob__) {
+                if (!currentModel.__ob__) {
                     return;
                 }
 
-                exp = `${_paths[1]}.**`;
-                // 补全路径
-                let _parent = _currentModel.__ob__.parent,
-                    _root = _currentModel.__ob__;
-                while (_parent) {
-                    exp = `*.${exp}`;
-                    _root = _parent;
-                    _parent = _parent.parent;
+                exp = paths[1] + ".**";
+                //补全路径
+                let parent = currentModel.__ob__.parent, root = currentModel.__ob__;
+                while (parent) {
+                    exp = "*." + exp;
+                    root = parent;
+                    parent = parent.parent;
                 }
-                const _regStr = routeToRegExp(exp);
-                const _dep2 = new Dep();
-                _root._globalDeps || (_root._globalDeps = {});
-                if (_.isArray(_root._globalDeps[_regStr])) {
-                    _root._globalDeps[_regStr].push(_dep2);
+                const regStr = routeToRegExp(exp);
+                const dep = new Dep();
+                root._globalDeps || (root._globalDeps = {});
+                if (_.isArray(root._globalDeps[regStr])) {
+                    root._globalDeps[regStr].push(dep);
                 } else {
-                    _root._globalDeps[_regStr] = [_dep2];
+                    root._globalDeps[regStr] = [dep];
                 }
 
-                const _w2 = new Watcher(
-                    _currentModel,
-                    () => {
-                        _dep2.depend();
-
-                        return NaN;
-                    },
-                    (newValue, oldValue, attrs) => {
-                        callback(
-                            i,
-                            newValue,
-                            oldValue,
-                            _.extend({ index: i }, attrs)
-                        );
-                    },
-                    options
-                );
-                watchers.push(() => {
-                    if (_root._globalDeps) {
-                        remove(_root._globalDeps[_regStr], _dep2);
-
-                        if (_root._globalDeps[_regStr].length === 0) {
-                            delete _root._globalDeps[_regStr];
-                            _w2.teardown();
+                const w = new Watcher(currentModel, function () {
+                    dep.depend();
+                    return NaN;
+                }, function (newValue, oldValue, attrs) {
+                    callback(i, newValue, oldValue, _.extend({ index: i }, attrs));
+                }, options);
+                watchers.push(function unwatchFn() {
+                    if (root._globalDeps) {
+                        remove(root._globalDeps[regStr], dep);
+
+                        if (root._globalDeps[regStr].length === 0) {
+                            delete root._globalDeps[regStr];
+                            w.teardown();
                         }
                     }
                 });
-
                 return;
             }
             // 再有结尾有*的就不支持了
             if (exp[exp.length - 1] === "*") {
                 throw new Error("not support");
             }
-            // 其他含有*的情况，如*.a,*.*.a,a.*.a
+            //其他含有*的情况，如*.a,*.*.a,a.*.a
             let currentModel = model;
-            // 先获取到能获取到的对象
+            //先获取到能获取到的对象
             const paths = exp.split(".");
-            for (let _i = 0, len = paths.length; _i < len; _i++) {
-                if (paths[_i] === "*") {
+            for (let i = 0, len = paths.length; i < len; i++) {
+                if (paths[i] === "*") {
                     break;
                 }
-                currentModel = model[paths[_i]];
+                currentModel = model[paths[i]];
             }
-
+            exp = exp.substr(exp.indexOf("*"));
             if (!currentModel.__ob__) {
                 return;
             }
-
-            exp = exp.substr(exp.indexOf("*"));
-            // 补全路径
-            let parent = currentModel.__ob__.parent,
-                root = currentModel.__ob__;
+            //补全路径
+            let parent = currentModel.__ob__.parent, root = currentModel.__ob__;
             while (parent) {
-                exp = `*.${exp}`;
+                exp = "*." + exp;
                 root = parent;
                 parent = parent.parent;
             }
@@ -1111,24 +1028,13 @@ function watch(model, expOrFn, cb, options) {
                 root._globalDeps[regStr] = [dep];
             }
 
-            const w = new Watcher(
-                currentModel,
-                () => {
-                    dep.depend();
-
-                    return NaN;
-                },
-                (newValue, oldValue, attrs) => {
-                    callback(
-                        i,
-                        newValue,
-                        oldValue,
-                        _.extend({ index: i }, attrs)
-                    );
-                },
-                options
-            );
-            watchers.push(() => {
+            const w = new Watcher(currentModel, function () {
+                dep.depend();
+                return NaN;
+            }, function (newValue, oldValue, attrs) {
+                callback(i, newValue, oldValue, _.extend({ index: i }, attrs));
+            }, options);
+            watchers.push(function unwatchFn() {
                 if (root._globalDeps) {
                     remove(root._globalDeps[regStr], dep);
                     if (root._globalDeps[regStr].length === 0) {
@@ -1137,27 +1043,21 @@ function watch(model, expOrFn, cb, options) {
                     }
                 }
             });
-
             return;
         }
-        const watcher = new Watcher(
-            model,
-            exp,
-            (newValue, oldValue, attrs) => {
-                callback(i, newValue, oldValue, _.extend({ index: i }, attrs));
-            },
-            options
-        );
-        watchers.push(() => {
+        const watcher = new Watcher(model, exp, function (newValue, oldValue, attrs) {
+            callback(i, newValue, oldValue, _.extend({ index: i }, attrs));
+        }, options);
+        watchers.push(function unwatchFn() {
             watcher.teardown();
         });
     });
-
     return watchers;
 }
 
 const mixinInjection = {};
 
+
 function getMixins(type) {
     return mixinInjection[type];
 }
@@ -1185,9 +1085,17 @@ function initComputed(vm, computed) {
 
 function defineComputedWatcher(vm, userDef) {
     const context = vm.$$model ? vm.model : vm;
-    const getter = typeof userDef === "function" ? userDef : userDef.get;
-
-    return new Watcher(context, getter || noop, noop, computedWatcherOptions);
+    const getter =
+        typeof userDef === "function"
+            ? userDef
+            : userDef.get;
+
+    return new Watcher(
+        context,
+        getter || noop,
+        noop,
+        computedWatcherOptions
+    );
 }
 
 function defineOneComputedGetter(vm, key, userDef) {
@@ -1209,7 +1117,6 @@ function defineOneComputedGetter(vm, key, userDef) {
             : noop;
         sharedPropertyDefinition.set = userDef.set ? userDef.set : noop;
     }
-
     return sharedPropertyDefinition;
 }
 
@@ -1233,7 +1140,6 @@ function createComputedGetter(vm, key) {
             if (REACTIVE && Dep.target) {
                 watcher.depend();
             }
-
             return watcher.value;
         }
     };
@@ -1241,7 +1147,7 @@ function createComputedGetter(vm, key) {
 
 function initWatch(vm, watch$$1) {
     vm._watchers || (vm._watchers = []);
-    for (const key in watch$$1) {
+    for (let key in watch$$1) {
         const handler = watch$$1[key];
         if (_.isArray(handler)) {
             for (let i = 0; i < handler.length; i++) {
@@ -1261,7 +1167,6 @@ function createWatcher(vm, keyOrFn, cb, options) {
     if (typeof cb === "string") {
         cb = vm[cb];
     }
-
     return watch(
         vm.model,
         keyOrFn,
@@ -1282,7 +1187,7 @@ function initMethods(vm, methods) {
 function initMixins(vm, mixins) {
     mixins = (mixins || []).slice(0);
 
-    _.each(mixins.reverse(), (mixinType) => {
+    _.each(mixins.reverse(), function (mixinType) {
         const mixin$$1 = getMixins(mixinType);
 
         for (const key in mixin$$1) {
@@ -1327,14 +1232,13 @@ function defineProps(vm, keys) {
     //         }
     //     })
     // }
-
-    const _loop = function _loop(i, len) {
+    for (let i = 0, len = keys.length; i < len; i++) {
         const key = keys[i];
         if (!(key in $$skipArray)) {
             props[key] = {
                 enumerable: true,
                 configurable: true,
-                get: function get() {
+                get: function () {
                     if (vm.$$computed && key in vm.$$computed) {
                         return vm.$$computed[key];
                     }
@@ -1352,7 +1256,7 @@ function defineProps(vm, keys) {
                         p = p._parent;
                     }
                 },
-                set: function set(val) {
+                set: function (val) {
                     if (vm.$$state && key in vm.$$state) {
                         return (vm.$$state[key] = val);
                     }
@@ -1369,35 +1273,26 @@ function defineProps(vm, keys) {
                 }
             };
         }
-    };
-
-    for (let i = 0, len = keys.length; i < len; i++) {
-        _loop(i, len);
     }
     vm.model = createViewModel$1({}, props);
 }
 
 function defineContext(vm, keys) {
     const props = {};
-
-    const _loop2 = function _loop2(i, len) {
+    for (let i = 0, len = keys.length; i < len; i++) {
         const key = keys[i];
         if (!(key in $$skipArray)) {
             props[key] = {
                 enumerable: true,
                 configurable: true,
-                get: function get() {
+                get: function () {
                     return vm.model[key];
                 },
-                set: function set(val) {
+                set: function (val) {
                     return (vm.model[key] = val);
                 }
             };
         }
-    };
-
-    for (let i = 0, len = keys.length; i < len; i++) {
-        _loop2(i, len);
     }
     vm.$$context = createViewModel$1({}, props);
 }
@@ -1415,22 +1310,14 @@ function getInjectValue(vm, key) {
 function getInjectValues(vm) {
     const inject = vm.inject || [];
     const result = {};
-    _.each(inject, (key) => {
+    _.each(inject, function (key) {
         result[key] = getInjectValue(vm, key);
     });
-
     return result;
 }
 
-const Model = (function() {
-    function Model() {
-        _classCallCheck(this, Model);
-    }
-
-    Model.prototype._constructor = function _constructor(
-        model,
-        destroyHandler
-    ) {
+class Model {
+    _constructor(model, destroyHandler) {
         if (model instanceof Observer || model instanceof Model) {
             model = model.model;
         }
@@ -1470,22 +1357,23 @@ const Model = (function() {
         if (this.$$model) {
             return this.model;
         }
-    };
+    }
 
-    Model.prototype._init = function _init() {
-    };
+    _init() {
 
-    Model.prototype.init = function init() {
+    }
+
+    init() {
         this._init();
-    };
+    }
 
-    Model.prototype.destroy = function destroy() {
-        for (const _key3 in this._computedWatchers) {
-            this._computedWatchers[_key3].teardown();
+    destroy() {
+        for (const key in this._computedWatchers) {
+            this._computedWatchers[key].teardown();
         }
-        _.each(this._watchers, (unwatches) => {
+        _.each(this._watchers, function (unwatches) {
             unwatches = _.isArray(unwatches) ? unwatches : [unwatches];
-            _.each(unwatches, (unwatch) => {
+            _.each(unwatches, function (unwatch) {
                 unwatch();
             });
         });
@@ -1495,10 +1383,8 @@ const Model = (function() {
         this.$$computed = null;
         this.$$state = null;
         this._destroyHandler && this._destroyHandler();
-    };
-
-    return Model;
-})();
+    }
+}
 
 function define(model) {
     return REACTIVE ? new Observer(model).model : model;
@@ -1514,7 +1400,7 @@ function config(options) {
 }
 
 function toJSON(model) {
-    let result = void 0;
+    let result;
     if (_.isArray(model)) {
         result = [];
         for (let i = 0, len = model.length; i < len; i++) {
@@ -1522,15 +1408,14 @@ function toJSON(model) {
         }
     } else if (model && isPlainObject(model)) {
         result = {};
-        for (const _key4 in model) {
-            if (!_.has($$skipArray, _key4)) {
-                result[_key4] = toJSON(model[_key4]);
+        for (let key in model) {
+            if (!_.has($$skipArray, key)) {
+                result[key] = toJSON(model[key]);
             }
         }
     } else {
         result = model;
     }
-
     return result;
 }
 
@@ -1554,6 +1439,7 @@ export const Fix = {
     freeze,
     del,
     Watcher,
+    cleanupDeps,
     pushTarget,
     popTarget,
     watch,