implement reactjs history

shared/utils/object.js

@@ -0,0 +1,12 @@
+class ObjectUtil {
+
+  static filterKeys(obj, keys){
+    return Object.keys(obj).reduce((filtered, key)=>{
+      if (keys.indexOf(key) >= 0) filtered[key] = obj[key]
+      return filtered;
+    }, {});
+  }
+
+}
+
+export default ObjectUtil;