In order to fulfill business requirements with limited resources, we are often in situations where using third-party libraries and frameworks makes a lot of sense. Depending on the experience of the developers and the expectations of the customer, we will end up choosing a specific framework or set of libraries. Some of them are very easy to incorporate to SharePoint Framework, like React and Fabric React as well as AngularJS or Angular 1+. Others might work just as well, but the lack of guidance and examples might steer us away from them. Experience in both using the specific frameworks or libraries and SharePoint Framework will guide us through, and you will learn by doing and resolving issues when needed.
Among the first questions we face is whether to bundle your project or not. If the source files are very small, it is probably easiest and most convenient to bundle the libraries or frameworks as part of our web part projects. But for bigger libraries or...