fix bug in vuex of strict model

src/utils/index.js

@@ -250,3 +250,21 @@
    };
  }
 
+
+ export function deepClone(source) {
+   if (!source && typeof source !== 'object') {
+     throw new Error('error arguments', 'shallowClone');
+   }
+   const targetObj = source.constructor === Array ? [] : {};
+   for (const keys in source) {
+     if (source.hasOwnProperty(keys)) {
+       if (source[keys] && typeof source[keys] === 'object') {
+         targetObj[keys] = source[keys].constructor === Array ? [] : {};
+         targetObj[keys] = deepClone(source[keys]);
+       } else {
+         targetObj[keys] = source[keys];
+       }
+     }
+   }
+   return targetObj;
+ }