店铺 bannel 兼容

 'use strict';
 
 const url = require('url');
+const _ = require('lodash');
 const config = require('../config/common');
 const assetUrl = config.assetUrl;
 
@@ -9,7 +10,7 @@ module.exports = {
         return url.resolve(assetUrl, imgSrc);
     },
     image2: function(imageUrl, opts) {
-        if (imageUrl) {
+        if (imageUrl && _.isString(imageUrl)) {
             let params = opts.hash;
             let urls = imageUrl.split('?');
             let query = urls[1] || '';
@@ -50,7 +51,7 @@ module.exports = {
             }
             return uri + '?' + query;
         } else {
-            return imageUrl;
+            return '';
         }
     },
     ifor: function() {