It's a known fact that once browsers have downloaded frontend files, there's no way to hide code from the client. However, I've heard that clients can debug JavaScript code, add breakpoints, skip code lines (especially security checks), and manipulate service calls as they please.
The project I'm currently working on is built with AngularJS and utilizes an SSL certificate for service calls. Apart from these measures, what additional security measures can I implement on the client side to prevent my code from being tampered with?