I want to develop an app which will directly interact with the end users.
This will app will be inside online store.
I went through the documentation and found that it can be done with the help of Extensions for online store.
After creating Extension -> Online store -> Theme App Extensions I am getting a message of "Push code to preview this extension"
Is there a way in which I can preview my app without uploading the code?
Is there any tutorial which I can follow to create an extension?