Currently, i’m building up an app that would require me to touch on the shopify themes. Our goal here is to ensure that our app would be able to be compatible with the free and paid themes in the shopify themes marketplace. Due to the nature of shopify themes, I understand that it would be impossible to be fully compatible with every other custom themes, in which we would have to provide manual support for merchants who uses custom themes.
So my question here is that currently the shopify themes market place has a total of 81 themes, which includes free and paid themes. How do you go about by doing it in programming it in the most efficient way to be compatible with 81 themes in the marketplace, rather than 1 by 1?