update

dist/bundle.js

@@ -34708,7 +34708,7 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
                 enumerable: true,
                 configurable: true,
                 get: function reactiveGetter() {
-                    var value = val;
+                    var value = childOb && childOb.model || val;
                     if (Dep.target) {
                         dep.depend();
                         if (childOb) {
@@ -34721,7 +34721,7 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
                     return value;
                 },
                 set: function reactiveSetter(newVal) {
-                    var value = val;
+                    var value = childOb && childOb.model || val;
                     if (newVal === value || newVal !== newVal && value !== value) {
                         return;
                     }
@@ -35483,7 +35483,7 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
             for (var i = 0, len = model.length; i < len; i++) {
                 result[i] = toJSON(model[i]);
             }
-        } else if (isPlainObject(model)) {
+        } else if (model && isPlainObject(model)) {
             result = {};
             for (var _key4 in model) {
                 if (!_.has($$skipArray, _key4)) {
@@ -111424,8 +111424,8 @@ BI.shortcut("bi.value_chooser_pane", BI.ValueChooserPane);;(function () {
             "sortBy", "groupBy", "indexBy", "countBy", "partition",
             "keys", "allKeys", "values", "pairs", "invert",
             "mapObject", "findKey", "pick", "omit", "tap"], function (name) {
-            var old = _[name];
-            _[name] = function (obj, fn) {
+            var old = BI[name];
+            BI[name] = function (obj, fn) {
                 return typeof fn === "function" ? old(obj, function (key, value) {
                     if (!(key in Fix.$$skipArray)) {
                         return fn.apply(this, arguments);
@@ -111433,33 +111433,40 @@ BI.shortcut("bi.value_chooser_pane", BI.ValueChooserPane);;(function () {
                 }) : old.apply(this, arguments);
             };
         });
-
-        _.each(["isPlainObject"], function (name) {
-            var old = _[name];
-            _[name] = function (value) {
-                for (var key in value) {
-                    if (key in Fix.$$skipArray) {
-                        return true;
+        BI.isEmpty = function (ob) {
+            if (BI.isPlainObject(ob) && ob.__ob__) {
+                return BI.keys(ob).length === 0;
             }
+            return _.isEmpty(ob);
+        };
+        BI.keys = function (ob) {
+            var keys = _.keys(ob);
+            var nKeys = [];
+            for (var i = 0; i < keys.length; i++) {
+                if (!(keys[i] in Fix.$$skipArray)) {
+                    nKeys.push(keys[i]);
                 }
-                return old(value);
+            }
+            return nKeys;
         };
-        });
-
-        _.each(["isEqual"], function (name) {
-            var old = _[name];
-            _[name] = function (value, other) {
-                return old(Fix.toJSON(value), Fix.toJSON(other));
+        BI.values = function (ob) {
+            var keys = BI.keys(obj);
+            var length = keys.length;
+            var values = [];
+            for (var i = 0; i < length; i++) {
+                values[i] = obj[keys[i]];
+            }
+            return values;
         };
-        });
-
-
-        _.each(["cloneDeep", "isEmpty", "size"], function (name) {
-            var old = _[name];
-            _[name] = function (value) {
-                return old(Fix.toJSON(value));
+        BI.size = function (ob) {
+            if (BI.isPlainObject(ob) && ob.__ob__) {
+                return BI.keys(ob).length;
+            }
+            return _.size(ob);
+        };
+        BI.isEmptyObject = function (ob) {
+            return BI.size(ob) === 0;
         };
-        });
     }
     BI.watch = Fix.watch;
 }());(function () {