fix(redux): 多实例的情况

Author: nishino-tsukasa

packages/redux/helper.js

@@ -22,6 +22,7 @@ export const mapState = function (states) {
         : state[val];
 
       // 利用 redux state 每次改变都会返回一个新 state 的特性，只需做引用比较
+      const resValueMap = res[key][this.$id]
       if (resValueMap[key].value !== value) {
         resValueMap[key] = Object.preventExtensions({ value });
       }

packages/redux/install.js

@@ -16,18 +16,22 @@ export default function wepyInstall (wepy) {
         }
         const { computed } = this.$options;
         const keys = Object.keys(computed);
+        let resValueMap
         for (let i = 0; i < keys.length; i++) {
           if ('resValueMap' in computed[keys[i]]) {
-            wepy.observe({
-              vm: this,
-              key: '',
-              value: computed[keys[i]].resValueMap,
-              parent: '',
-              root: true
-            });
-            break;
+            if (!resValueMap) {
+              resValueMap = {...computed[keys[i]].resValueMap}
+            }
+            computed[keys[i]][this.$id] = resValueMap
           }
         }
+        wepy.observe({
+          vm: this,
+          key: '',
+          value: resValueMap,
+          parent: '',
+          root: true
+        });
       }
     },