I using slate for shopify theme developement.
Slate : <https://github.com/Shopify/slate>

node -v : v10.16.0  

npm -v : 6.9.0  

slate -v : 0.14.0 

Followed follwoing step  

1) slate theme mydemo  

2) slate build (created dist folder)  

3) slate zip (upload this theme on shopify store and get theme id.)  

4) set store, password, theme id in config.yml file.  

5) slate deploy  

6) slate watch 

Get error in complied dist folder Uncaught ReferenceError: $ is not defined in dist/assets/theme.js at line number 274 slate.Sections.prototype = $.extend({}, slate.Sections.prototype, {

<https://jsrajyaguru.myshopify.com/products/650c-micro-wheelset> when I change variation from dropdown price and product image not change due to javascript error.