I've recently been unfortunate enough to work on the impending migration away from AngularJS toward the new Angular. Eventually AngularJS will be officially deprecated by the Angular team once Angular 2+ overtakes its predecessor. When that happens, security vulnerabilities may keep AngularJS from being used in production apps. This means now is the time to get out! I've recently been learning Angular with TypeScript and just want to say I really hate every single build system I've seen thus far.