fix(core): update

test/test.ts

@@ -1,6 +1,17 @@
 import { expect, tap } from '@pushrocks/tapbundle';
 import * as smartmail from '../ts/index';
 
+let emailAddressValidatorInstance: smartmail.EmailAddressValidator;
+
+tap.test('should create an instance of EmailAddressValidator', async () => {
+  emailAddressValidatorInstance = new smartmail.EmailAddressValidator();
+  expect(emailAddressValidatorInstance).to.be.instanceOf(smartmail.EmailAddressValidator);
+});
+
+tap.test('should validate an email', async () => {
+  const result = await emailAddressValidatorInstance.validate('sandbox@bleu.de');
+});
+
 tap.test('first test', async () => {
   const testSmartmail = new smartmail.Smartmail({
     body: 'hi there',