Hello,
I have an application that has been happily using checkouts as carts on the Storefront API (carts did not exist at that time).
Now I would like to add subscription products, and I see that subscriptions are not supported on checkout line items https://shopify.dev/api/storefront/reference/checkouts/checkoutlineiteminput
I see that the new(ish) Carts do support selling plans, which I assume allow subscriptions https://shopify.dev/api/storefront/reference/cart/cartlineinput
However, carts have no mutation to apply gift cards like checkouts do, with https://shopify.dev/api/storefront/reference/checkouts/checkoutgiftcardapply
My store needs gift card application, and subscription products, but I don't see any way to do that in the storefront api.
Is this possible?
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