changed contacts routes to typescript

backend/src/services/ContactServices/ShowContactService.ts

@@ -0,0 +1,17 @@
+import Contact from "../../models/Contact";
+import AppError from "../../errors/AppError";
+
+const ShowContactService = async (id: string): Promise<Contact> => {
+  const user = await Contact.findOne({
+    where: { id },
+    attributes: ["id", "name", "number", "email"]
+  });
+
+  if (!user) {
+    throw new AppError("No contact found with this ID.", 404);
+  }
+
+  return user;
+};
+
+export default ShowContactService;