declare const uniqueEmail: unknown;
declare const request: unknown;
declare const customerId: undefined  if (customerId);
declare const uniqueEmail: unknown;
declare const firstRequest: unknown;
declare const secondCustomerData: {
  name: 'Second Test Customer';
  email: unknown;
  '
        phone': '555-987-6543';
  status: 'Active';
  user_id: 2
};
declare const secondRequest: unknown;
declare const errorMessage: unknown;
declare const uniqueEmail: unknown;
declare const request: unknown;
declare const uniqueEmail: unknown;
declare const request: undefined;
declare const fetchedCustomer: unknown;
declare const uniqueEmail: unknown;
declare const createRequest: undefined;
declare const updateData: {
  name: 'Updated Customer Name';
  phone: '555-333-4444'
};
declare const updateRequest: unknown;
declare const email1: `test-update-conflict-1-${Date.now()}@example.com` const email2 = `test-update-conflict-2-${Date.now()}@example.com`;
declare const firstCustomerData: {
  name: 'First Update Conflict Customer';
  email: unknown;
  phone: '555-111-2222';
  status: 'Active';
  user_id: 1
};
declare const firstRequest: undefined expect(firstCustomerId).toBeDefined();
declare const secondCustomerData: {
  name: 'Second Update Conflict Customer';
  email: unknown;
  phone: '555-333-4444';
  status: 'Active';
  user_id: 1
};
declare const secondRequest: undefined expect(secondCustomerId).toBeDefined();
declare const updateData: {
  email: unknown
};
declare const updateRequest: unknown;
declare const errorMessage: unknown;
declare const uniqueEmail: unknown;
declare const request: undefined;
declare const result: unknown;
declare const nonExistentId: unknown;
declare const customers: Array<]
      const customerIds = [>;
declare const uniqueEmail: unknown;
declare const request: unknown;
declare const customerId: undefined expect(customerId).toBeDefined();
declare const deletedCount: unknown;
declare const fetchedCustomer: unknown;
declare const deletedCount: unknown;