I like how easy it was to set up our first project using moment as compared with other libraries such as datepicker or time picker. It's not so complicated but gives you enough options for customization when needed. Their documentation could be improved upon because there are many steps required prior to implementing anything. But nothing much! The developer experience overall has been great. We have had no problems working together until now. Our projects use MVC architecture where we need some sort of library which can handle both client side data display and server-side validation.