Initial work, copied from the Shopify provider

framework/saleor/utils/checkout-create.ts

@@ -0,0 +1,26 @@
+import Cookies from 'js-cookie'
+
+import checkoutCreateMutation from './mutations/checkout-create'
+import { CheckoutCreatePayload } from '../schema'
+
+export const checkoutCreate = async (
+  fetch: any
+): Promise<CheckoutCreatePayload> => {
+  const data = await fetch({
+    query: checkoutCreateMutation,
+  })
+
+  const checkout = data.checkoutCreate?.checkout
+  const checkoutId = checkout?.id
+
+  if (checkoutId) {
+    const options = {
+      expires: 60 * 60 * 24 * 30,
+    }
+    Cookies.set('saleorCheckoutID', checkoutId, options)
+  }
+
+  return checkout
+}
+
+export default checkoutCreate