add server to monorepo.

packages/server/src/services/Contacts/Customers/CRUD/CustomerValidators.ts

@@ -0,0 +1,16 @@
+import { ServiceError } from '@/exceptions';
+import { Service, Inject } from 'typedi';
+import { ERRORS } from '../constants';
+
+@Service()
+export class CustomerValidators {
+  /**
+   * Validates the given customer is not already published.
+   * @param {ICustomer} customer
+   */
+  public validateNotAlreadyPublished = (customer) => {
+    if (customer.active) {
+      throw new ServiceError(ERRORS.CUSTOMER_ALREADY_ACTIVE);
+    }
+  };
+}