title: Does a client can view my TypeScript classes in Angular and change them after deployment?
body: <p>I work now with Angular 9 on Visual Studio Code.<br />
  I have a service that save secret data about the user (like user id).<br />
  When I will deploy my project, and start using my project - <br />
  does the client will has an access to change my classes and the data inside them?</p>
  
  <p>Example - I have a service that save the user id:</p>
  
  <pre><code>export class LoginService 
  {
    userid;
    username;
  
    constructor(private http: HttpClient, private router: Router)
    {
    }
  
    // ...
  }
  </code></pre>
  
  <p>After deployment, the client will hs an access to change the LoginService properties (userid, username) <br />or he will can't do that?<br />
  I ask because I want to reuse the service properties for different components,<br />
  and if the user have the access to change the properties in the service - it is bad.<br />
  Thanks.</p>