SharePoint CRUD operations in SharePoint Framework client-side web parts

SharePoint CRUD operations in SharePoint Framework client-side web parts

When building web parts on the SharePoint Framework you might need to interact with list items. To help you get started, SharePoint Patterns and Practices published a set sample Web Parts. SharePoint list items CRUD operations SharePoint lists are a convenient place for customizations to store their data. By using
Converting existing JS apps to SharePoint Framework - SharePoint Dev PnP Web Cast

Converting existing JS apps to SharePoint Framework - SharePoint Dev PnP Web Cast

SharePoint Framework offers new developer opportunities for extending SharePoint. But in order to benefit of these new opportunities, do you need to throw away everything you have built in the past and start all over or is there a way to leverage the previous investments? It's a new model The