Update README.md

framework/shopify/README.md

@@ -121,3 +121,15 @@ const pages = await getAllPages({
   config,
 })
 ```
+
+## Code generation
+
+This provider makes use of GraphQL code generation. The [schema.graphql](./schema.graphql) and [schema.d.ts](./schema.d.ts) files contain the generated types & schema introspection results.
+
+When developing the provider, changes to any GraphQL operations should be followed by re-generation of the types and schema files:
+
+From the project root dir, run:
+
+```sh
+yarn generate:shopify
+```

framework/shopify/schema.d.ts

@@ -5024,6 +5024,7 @@ export type Unnamed_1_Mutation = { __typename?: 'Mutation' } & {
           'code' | 'field' | 'message'
         >
       >
+      checkout?: Maybe<{ __typename?: 'Checkout' } & CheckoutDetailsFragment>
     }
   >
 }