diff --git a/frontend/src/app.d.ts b/frontend/src/app.d.ts
index d9faa97..663579e 100644
--- a/frontend/src/app.d.ts
+++ b/frontend/src/app.d.ts
@@ -1,53 +1,70 @@
 // See https://kit.svelte.dev/docs/types#app
 
 interface Subscription {
-  id: string;
-  name: string;
-  details: string;
-  conditions: string | null;
-  monthly_fee: number;
-  hourly_rate: number;
-  included_hours_per_year: number | null;
-  included_hours_per_month: number | null;
+  id: number | -1;
+  name: string | "";
+  details?: string | "";
+  conditions?: string | "";
+  monthly_fee?: number | -1;
+  hourly_rate?: number | -1;
+  included_hours_per_year?: number | 0;
+  included_hours_per_month?: number | 0;
 }
 
 interface Membership {
-  id: string;
-  status: string;
-  start_date: string;
-  end_date: string;
-  parent_member_id: number | null;
-  subscription_model: Subscription | null;
+  id: number | -1;
+  status: number | -1;
+  start_date: string | "";
+  end_date: string | "";
+  parent_member_id: number | -1;
+  subscription_model: Subscription;
 }
 
 interface BankAccount {
-  id: string;
-  mandate_date_signed: string;
-  bank: string;
-  account_holder_name: string;
-  iban: string;
-  bic: string;
-  mandate_reference: string;
+  id: number | -1;
+  mandate_date_signed: string | "";
+  bank: string | "";
+  account_holder_name: string | "";
+  iban: string | "";
+  bic: string | "";
+  mandate_reference: string | "";
+}
+
+interface DriversLicence {
+  id: number | -1;
+  status: number | -1;
+  licence_number: string | "";
+  issued_date: string | "";
+  expiration_date: string | "";
+  issuing_country: string | "";
+  licence_categories: LicenceCategory[];
+}
+
+interface LicenceCategory {
+  id: number | -1;
+  category: string | "";
 }
 
 interface User {
-  email: string;
-  first_name: string;
-  last_name: string;
-  phone: string | null;
-  notes: string;
-  address: string;
-  zip_code: string;
-  city: string;
-  status: number;
-  id: string;
-  role_id: number;
-  date_of_birth: string;
+  email: string | "";
+  first_name: string | "";
+  last_name: string | "";
+  phone: string | "";
+  notes: string | "";
+  address: string | "";
+  zip_code: string | "";
+  city: string | "";
+  status: number | -1;
+  id: number | -1;
+  role_id: number | -1;
+  date_of_birth: string | "";
+  company: string | "";
+  profile_picture: string | "";
+  payment_status: number | -1;
   membership: Membership;
   bank_account: BankAccount;
-  company: string | null;
-  profile_picture: string | null;
-  payment_status: number;
+  drivers_licence: DriversLicence;
+  notes: string | "";
 }
 
 declare global {
@@ -55,6 +72,7 @@ declare global {
     // interface Error {}
     interface Locals {
       user: User;
+      subscriptions: Subscription[];
     }
     // interface PageData {}
     // interface Platform {}