feat: Typescript for API layer (#817)

Co-authored-by: Philip Korsholm <88927411+pKorsholm@users.noreply.github.com>
Co-authored-by: Zakaria El Asri <33696020+zakariaelas@users.noreply.github.com>
Co-authored-by: Kasper Fabricius Kristensen <45367945+kasperkristensen@users.noreply.github.com>
Co-authored-by: Philip Korsholm <philip.korsholm@hotmail.com>
Co-authored-by: Sebastian Rindom <seb@medusa-commerce.com>

integration-tests/api/__tests__/admin/region.js

@@ -67,6 +67,11 @@ describe("/admin/discounts", () => {
           console.log(err)
         })
 
+      expect(response.data).toEqual({
+        id: "test-region",
+        object: "region",
+        deleted: true,
+      })
       expect(response.status).toEqual(200)
     })
   })