Update webpack

src/utils/cash-dom.js

@@ -1214,7 +1214,7 @@ fn.text = function(content) {
 // @require core/cash.js
 // @require core/variables.js
 
-var docEle = doc.documentElement;
+var docEle = doc && doc.documentElement;
 
 fn.offset = function() {
   var ele = this[0];

webpack.config.js

@@ -23,7 +23,7 @@ export default ({ config }) => ({
   resolve: {
     modules: ['src', 'node_modules'],
     alias: {
-      jquery: 'cash-dom',
+      jquery: 'utils/cash-dom',
       backbone: `${rootDir}/node_modules/backbone`,
       underscore: `${rootDir}/node_modules/underscore`,
     }