Great question. There is no requirement of Node and React for your app. For actions like showing a popup you can use App Bridge modal action in vanilla JS, no matter what your backend language is. The library has no dependencies and there are instructions here for using it directly from a CDN if you don't want to use the node package: https://help.shopify.com/en/api/embedded-apps/app-bridge/getting-started#set-up-shopify-app-bridge-i...
|an hour ago|
|2 hours ago|