I have a simple project with Angular 7 using GSAP 3. That's it works perfectly with comand 'ng serve' and 'ng build' of Angular CLI, but when I use the comand 'ng build --prod',  the application throws the following error:   "Uncaught TypeError: Cannot read property 'easeIn' of undefined".   I think the problem just happens in AoT build mode of Angular.   Could someone help me with this?   Thanks!!